EP2360434A1 - Extracting hood and method for controlling the same - Google Patents

Extracting hood and method for controlling the same Download PDF

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Publication number
EP2360434A1
EP2360434A1 EP11000884A EP11000884A EP2360434A1 EP 2360434 A1 EP2360434 A1 EP 2360434A1 EP 11000884 A EP11000884 A EP 11000884A EP 11000884 A EP11000884 A EP 11000884A EP 2360434 A1 EP2360434 A1 EP 2360434A1
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EP
European Patent Office
Prior art keywords
fan
motor
hood
control
fume extraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11000884A
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German (de)
French (fr)
Other versions
EP2360434B1 (en
Inventor
Nicolas Barjolin
Didier Gouardo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Groupe Brandt SAS
Original Assignee
FagorBrandt SAS
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Filing date
Publication date
Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Publication of EP2360434A1 publication Critical patent/EP2360434A1/en
Application granted granted Critical
Publication of EP2360434B1 publication Critical patent/EP2360434B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the present invention relates on the one hand to a cooking fume extraction hood, in particular to a domestic cooking fume extraction hood, provided with at least one fume extraction fan and control means. in operation of said at least one fan.
  • It also relates to a control method of a fume extraction hood equipped with at least one fume extraction fan and operating control means of said at least one fan.
  • a fume hood having fume extraction means comprising for example a fan provided with a motor and a turbine.
  • suction hoods are equipped with control means in operation of the suction means, for triggering manually or automatically the operation of the suction means during the presence of cooking fumes.
  • Operating control means are thus known for operating a fan of a fume hood used to circulate a flow of air at a low air flow rate by controlling the motor of said blower at a most rapid rotation speed. low possible over a short period, of the order of a few minutes per hour, so as to limit noise.
  • hoods have the disadvantage of controlling the fan motor at a fixed rotational speed to be sufficient to allow the operation of said engine in all operating conditions, especially when the engine is cold or the voltage power supply network is weak.
  • the fan of these suction hoods is triggered at different times when the control of the latter by the control means.
  • DE 10 2004 055 944 A1 which describes a device for ventilating a cooking surface or the area surrounding it.
  • This device comprises a fan, a device used to activate the latter so that it operates at a certain power and for a period of time at periodic intervals and an adjusting device comprising an input element for activating the intermittent ventilation.
  • the object of the present invention is to solve the aforementioned drawbacks and to propose a fume extraction hood and a control method for such a fume hood making it possible to obtain a flow of air sucked by at least one fan at a reduced air flow while consuming a minimum of energy and by limiting the level of noise, while ensuring operation without damage to the engine and without causing additional cost to obtain said hood.
  • the present invention aims, in a first aspect, a fume extraction hood with at least one fume extraction fan, control means in operation of said at least one fan, said minus a fan comprising a motor and a turbine.
  • said control means regulate a flow of air sucked by said at least one fan to a value of air flow by means of a control of said motor in a succession of at least acceleration ramps and deceleration of said engine.
  • the average rotational speed of the motor of said at least one fan of the suction hood is reduced by means of a succession of at least ramps of acceleration and deceleration of said motor so as to use the inertia of the turbine said at least one fan and to obtain suction fumes cooking at a reduced air flow, regular and limiting noise.
  • the motor control of the at least one fan in a succession of at least ramps of acceleration and deceleration of said motor also ensures operation without damage to said engine in all operating conditions, especially when the engine is cold or the voltage sector is weak.
  • this motor control of said at least one fan following ramps of acceleration and deceleration of said motor ensures the suction efficiency and without causing additional cost to obtain the suction hood.
  • a suction hood according to the invention makes it possible to create an air flow generated by said at least one fan at an air flow rate value in a continuous manner and without starting the rotary drive of the turbine of said minus one fan at a specified frequency.
  • said control means regulate said air flow sucked by said at least one fan to said air flow value outside the cooking periods implemented by a hob.
  • the air contained in a room such as a kitchen is sucked so as to extract cooking fumes or odors outside the cooking periods implemented by a hob, and to renew the air in the kitchen.
  • a room such as a kitchen
  • evacuating and / or treating smells of cigarette smoke especially for evacuating and / or treating smells of cigarette smoke.
  • a suction hood according to the invention makes it possible to replace or supplement a conventional controlled mechanical ventilation device set up in homes, and in particular in kitchens.
  • Such a suction hood allows by means of a motor control of said at least one fan to drive the turbine thereof at a low rotational speed so as to minimize the consumption of electrical energy and to limit the level noise nuisance in this mode of operation outside the cooking periods implemented by a hob, while ensuring operation without damage to the engine of said at least one fan and the suction efficiency of cooking fumes.
  • said airflow value of said at least one fan outside the cooking periods implemented by a hob is less than an operating airflow value of said at least one fan during periods of operation. cooking implemented by said hob.
  • the present invention aims, according to a second aspect, a control method of a fume hood fume hood comprising at least one fume extraction fan, operating control means of said at least one fan, said at least one fan comprising a motor and a turbine.
  • This method of controlling a fume extraction hood has advantages similar to those described above with reference to the hood fume extraction cooking according to the invention.
  • the flow of air sucked by said at least one fan is regulated to an air flow value by means of a succession of at least ramps of acceleration and deceleration of the motor control of said at least one fan.
  • This regulation of the air flow sucked by the at least one fan makes it possible to reduce the rotational speed of the motor of the at least one fan of the extractor hood by means of a succession of at least one acceleration and deceleration ramps. said engine so as to use the inertia of the turbine of said at least one fan and to obtain a suction of cooking fumes at a reduced air flow, regular and limiting noise.
  • such a suction hood 1 is intended to be placed above a hob 2 to suck, and to evacuate and / or treat the fumes from cooking food on the table of cooking 2.
  • This suction hood 1 comprises in known manner at least one suction fan for cooking fumes 3.
  • said at least one fan 3 comprises a motor 4 and a turbine 5 for sucking the cooking fumes during cooking periods implemented by a hob 2.
  • a control device 6, as illustrated in FIG. figure 3 makes it possible to control the operation of said at least one fan 3, in particular the operation of the motor 4 for rotating the turbine 5 of said at least one fan 3.
  • the control device 6 of the operation of the suction hood 1 comprises in particular control means 7 themselves, such as for example at least one microcontroller 12, for controlling the operation of said at least one fan 3, via its motor. 4.
  • control panel 8 comprising selection means 9, such as for example touch keys, buttons, and possibly display means 10, such as for example a display, lights.
  • a comparator 11 is further adapted to detect the crossing of the zero value of the mains voltage U A.
  • the control means 7, 12 of the motor 4 use a gradation of the mains voltage U A by means of a triac 13 controlled by a microcontroller 12.
  • the control means 7, 12 carrying out the regulation of the air flow sucked by said at least one fan 3 use a gradation of the mains voltage U A by means of the triac 13 controlled by the microcontroller 12.
  • This gradation of the mains voltage U A consists of applying a set of conduction times to the triac 13 in an open loop.
  • the triac 13 makes it possible to accurately apply or not to apply the mains voltage U A to the terminals of the motor 4 of said at least one fan 3 so as to implement this gradation of the mains voltage U A.
  • a sector synchronization signal U B is derived from the mains voltage U A allowing the microcontroller 12 to determine the moment when the triac 13 is to be initiated.
  • the triac 13 is initiated according to the sector synchronization signal U B from the mains voltage U A.
  • the microcontroller 12 generates a control signal U c of the triac 13 for controlling the operation of the motor 4 of said at least one fan 3.
  • the motor 4 of said at least one fan 3 has a voltage U D at its terminals depending on the mains voltage U A and the control signal U C of the triac 13.
  • the mains voltage U A is defined by a sector period consisting of a positive half cycle and a negative half cycle.
  • the control device 6 of the operation of the suction hood 1 is supplied with electrical energy with the mains voltage U A and delivers the sector synchronization signal U B from the mains voltage U A , the control signal U C of the triac 13 generated by the microcontroller 12 from the sector synchronization signal U B , and the resulting voltage U D at the terminals of the motor 4 from the mains voltage U A and the control signal U C of the triac 13.
  • the voltage U D applied across the motor 4 is limited to a fraction of an alternation of the mains voltage U A.
  • the control device 6 of the operation of the suction hood 1 is adapted to synchronize the microcontroller 12 with the passage to the zero value of the mains voltage U A by means of the comparator 11 so as to obtain precise control of the triac 13.
  • the microcontroller 12 counts the time before the priming of the triac 13 so as to control said triac 13 at the precise instant when the voltage U D is at apply to the motor terminals 4.
  • said triac 13 opens of itself when the current flowing in the motor 4 is canceled, that is to say say at the end of each alternation of the mains voltage U A. Therefore, the triac 13 must be initiated during each alternation of the mains voltage U A.
  • the control means 7, 12 regulate a flow of air sucked by said at least one fan 3 to an air flow value by means of a control of the engine 4 in a succession of at least acceleration ramps A and of deceleration D of said engine 4, as illustrated in FIGS. Figures 2A and 2B .
  • This air flow rate, said reduced, of said at least one fan 3 may be less than an operating air flow value of said at least one fan 3 generated by a fixed minimum rotation speed of the motor 4 of said at least one fan 3.
  • the average speed of rotation of the motor 4 of said at least one fan 3 of the extractor hood 1 is reduced by means of a succession of at least ramps of acceleration A and deceleration D of said motor 4 so as to use the inertia of the turbine 5 of said at least one fan 3 and to obtain suction fumes cooking at a reduced air flow, regular and limiting noise.
  • the control of the motor 4 of said at least one fan 3 along acceleration ramps A and deceleration D of said engine 4 also makes it possible to guarantee operation without damage to said engine 4 under all operating conditions, in particular when the engine 4 is cold. or the mains voltage U A is low.
  • the suction hood 1 makes it possible to create a flow of air generated by said at least one fan 3 at an air flow rate value in a continuous manner and without starting the rotary drive of the turbine 5 of said at least one fan 3 at a determined frequency.
  • the power delivered Pu to the motor 4 of said at least one fan 3 is expressed as a percentage as a function of time, for example in seconds.
  • the curve in solid line illustrates the power delivered Pu to the motor 4 of said at least one fan 3 subjected during its control to at least ramps of acceleration A and deceleration D so as to modulate the speed of rotation of said motor 4.
  • the continuous line curve of the Figures 2A and 2B illustrates the acceleration ramps A and deceleration ramps D can be implemented periodically.
  • the motor 4 of said at least one fan 3 may be subjected to one or more acceleration ramps A and deceleration D which may be successive or not, and of identical or different values.
  • the top of the curve in solid line illustrating the power delivered Pu to the motor 4 of the at least one fan 3 subjected when it is controlled to at least ramps of acceleration A and deceleration D, corresponds to the power level delivered Pu assuring a drive of the turbine 5 of said at least one fan 3 at a sufficient speed of rotation so as to obtain an air flow in accordance with the control of the motor 4 of said at least one fan 3.
  • This delivered power level Pu ensuring a drive of the turbine 5 of said at least one fan 3 at a sufficient speed of rotation is dependent on the characteristics of the motor 4 of said at least one fan 3.
  • this power value delivered to the engine 4 is of the order of 20W in average value for a motor 4 of fan 3 delivering a maximum air flow of 800m 3 / h, where the delay at initiation of the triac 13 is greater than or equal to 6.5 ms for an air flow of the fan 3 of the order of 100 m 3 / h generated by a control of said motor 4 in a succession of at least two ramps acceleration A and deceleration D of said motor 4.
  • the power delivered to the motor 4 is of the order of 60W in average value, where the triac 13 ignition delay is equal to 6.5ms for an operating air flow of the fan 3 of the order of 225m 3 / h generated by a control of said motor 4 at a fixed rotational speed.
  • the power delivered to the engine 4 is of the order of 130W in average value, where the triac 13 ignition delay is equal to 5.3ms for an operating air flow of the fan 3 of the order of 380m 3 / h generated by a control of said motor 4 at a fixed rotational speed.
  • the power delivered to the engine 4 is of the order of 210W in average value, where the delay in the priming of the triac 13 is equal to 3.8ms for a flow of air in operation of the fan 3 of the order of 550m 3 / h generated by a control of said motor 4 at a fixed rotational speed.
  • the power delivered to the engine 4 is of the order of 280W in average value, where the triac 13 permanently drives for an operating air flow of the fan 3 of the order of 710m 3 / h generated by a control said motor 4 at a fixed rotational speed.
  • the theoretical maximum delay at initiation of the triac 13 is equal to the duration of an alternation of the mains voltage U A , ie 10 ms for a mains voltage U A having a frequency of 50 Hz.
  • Reduction of the conduction time of triac 13, by the delay in priming the triac 13, makes it possible to reduce the time of application of the mains voltage U D to the motor 4 of said at least one fan 3 so as to reduce the power delivered Pu to said motor 4.
  • the acceleration ramps A of the motor 4 of said at least one fan 3 make it possible to limit jolts in said motor 4 when it is put into operation.
  • the deceleration ramps D of the engine 4 of said at least one fan 3 make it possible to avoid abrupt freewheeling of said engine 4, and in particular to avoid the restart of the engine 4 by a strong acceleration during an increase in the Power delivered Pu to the engine 4.
  • the dashed and mixed lines of Figures 2A and 2B illustrate the power Pu delivered to the motor 4 of said at least one fan 3 when driving said motor 4 at a fixed rotational speed for four different power values.
  • the power curve broad dashed line corresponds to the power Pu delivered minimum acceptable by the motor 4 of the at least one fan 3 when driving at a fixed rotational speed.
  • the mixed line power curve corresponds to the maximum power output Pu acceptable by the motor 4 of said at least one fan 3 when driving at a fixed rotational speed.
  • acceleration ramps A and the deceleration ramps D of the engine 4 of said at least one fan 3 are produced along line segments.
  • acceleration ramps A and the deceleration ramps D of the engine 4 of said at least one fan 3 are produced according to smooth curves, in particular of the polynomial type.
  • the behavior of the turbine 5 of said at least one fan 3 is better respected so as to reduce the vibrations of the suction hood 1 and the noise generated by said at least one fan 3.
  • the suction hood 1 comprising at least one fan 3 is adapted to operate the motor 4 of said at least one fan 3 so as to obtain a reduced air flow by modulating the control of said motor 4 by means of a succession of at least ramps of acceleration A and deceleration D of said motor 4, and to obtain an air flow in operation greater than the reduced air flow by maintaining said motor 4 at a fixed rotational speed.
  • control means 7, 12 in operation of said at least one fan 3 control said motor 4 at a maximum power for a predetermined duration.
  • the control triac 13 of said motor 4 is permanently driven so as to provide a maximum power to said motor 4.
  • the predetermined duration of the motor 4 of said at least one fan 3 to a maximum power, when starting said motor 4, may for example be of the order of 2 seconds.
  • the value of the predetermined duration of motor control of said at least one fan at maximum power, when starting said motor is in no way limiting and may be different.
  • control means 7, 12 regulate a flow of air sucked by said at least one fan 3 to a value of air flow by means of a control of the engine 4 in a succession of at least of the acceleration ramps A and deceleration D of said engine 4.
  • control means 7, 12 regulate the flow of air sucked by said at least one fan 3 to the air flow value outside the cooking periods implemented by a hob 2.
  • the air contained in a room such as a kitchen is sucked so as to extract cooking fumes or odors outside the cooking periods implemented by a hob 2, as well as to renew the air in such a room, especially for evacuating and / or treating smells of cigarette smoke.
  • the suction hood 1 makes it possible to replace or supplement a conventional controlled mechanical ventilation device installed in the dwellings, and especially in kitchens.
  • Such a suction hood 1 allows by means of a control of the motor 4 of said at least one fan 3 to drive the turbine 5 thereof at a low rotational speed so as to minimize the consumption of electrical energy and to limit the level of noise in this mode of operation outside the cooking periods implemented by a hob 2, while ensuring operation without damage to the motor 4 of the at least one fan 3 and the efficiency of suction of cooking fumes.
  • the reduced air flow rate value of said at least one fan 3 outside the cooking periods implemented by a hob 2 is less than an operating air flow value of said at least one fan 3 to during the cooking periods implemented by the hob 2.
  • control means 7, 12 of the motor 4 control a freewheeling rotation phase P of said motor 4 following a deceleration ramp D of the control of said motor 4, as illustrated in FIGS. Figures 2A and 2B .
  • phase of freewheeling rotation P of the motor 4 of said at least one fan 3 between a deceleration ramp D and an acceleration ramp A may be of reduced duration, or even eliminated, or else lengthened as long as the inertia the turbine 5 of said at least one fan 3 is sufficient to ensure reduced air flow and avoid suction variations causing noise.
  • control means 7, 12 of the motor 4 supply electrical energy to said motor 4 in a discontinuous manner.
  • the modulation of the motor control 4 of said at least one fan 3 of the suction hood 1 exploits the inertia of the turbine 5 of said at least one fan 3 so as to allow a discontinuous supply of said motor 4 without stopping rotation training.
  • the acceleration ramps A and deceleration D of the motor control 4 of said at least one fan 3 are associated with the discontinuous electric power supply of said motor 4 so as to limit the jolts during the rotational drive. said motor 4, and to limit sudden momentum breaks given to the turbine 5 of said at least one fan 3, which are noise and vibration generators.
  • the air flow sucked by said at least one fan 3 is regular while ensuring a minimum power consumption and a reduction of noise.
  • the curve of the figure 6 illustrating the voltage U D at the terminals of the motor 4 of said at least one fan 3 can be approximated to that of the curve of the Figures 2A and 2B continuous line illustrating the power Pu delivered to said engine 4 during the modulation of the control of this engine 4.
  • modulation phases of the motor control of the at least one fan illustrated in FIGS. Figures 2 to 6 are in no way limiting and may be different.
  • control of the motor 4 of said at least one fan 3 comprises a triac initiation delay 13 identical during a positive half cycle and a negative half cycle of at least one mains period of the mains voltage U A.
  • the modulation phases of the motor control 4 of said at least one fan 3 are symmetrical for at least a period mains of the mains voltage U A.
  • the control of the motor 4 following at least ramps of acceleration A and deceleration D of said motor 4 comprises a delay in priming the triac 13 identical during a positive half cycle and a negative half cycle of at least one mains period of the voltage U A sector, that is for a mains period of 20 ms when the mains voltage U A has a frequency of 50 Hz, then the triac 13 start delay can be modified for a positive half cycle and a negative half cycle. of a following sector period of the mains voltage U A.
  • this control of the motor 4 makes it possible to avoid any dissymmetry of the current absorbed by the motor 4 causing disturbances on the mains voltage U A.
  • Such disturbances on the mains voltage U A would occur in the case where a triac 13 initiation delay would be different during a positive half cycle and a negative half cycle of at least one mains voltage period U A.
  • control of the motor 4 by the control means 7, 12 is triggered manually by a selection means 9 of a control panel 8.
  • the selection means 9 of the control of the motor 4, making it possible to implement the modulation of the control of the latter by means of a succession of at least acceleration ramps A and deceleration D, can be for example a button, a touch pad, or an optical key.
  • selection means is in no way limiting and may be different.
  • control of the motor 4 by the control means 7, 12 is triggered automatically by a sensor 14 in communication with said control means 7, 12.
  • the sensor 14 of the motor control 4 for implementing modulation of the control thereof by means of a succession of at least acceleration ramps A and deceleration D, can be for example a sensor of temperature of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined threshold moisture value, and / or an infrared sensor of the hood of suction 1 communicating with a transmitter disposed at the level of the hob 2.
  • the type of sensor is not limiting and may be different.
  • control of the motor 4 by the control means 7, 12 is triggered remotely by a communication device (not shown), in particular using a communication network, or a communication device. Automation.
  • this control method is implemented in a fume hood as described with reference to Figures 1 to 6 .
  • This method comprises at least one step of regulating a flow of air sucked by said at least one fan 3 to a value of air flow by means of a control of the motor 4 in a succession of at least two ramps. acceleration A and deceleration D of said engine 4.
  • This air flow rate, said reduced, of said at least one fan 3 may be less than an operating air flow value of said at least one fan 3 generated by a fixed minimum rotational speed of the engine 4 of said at least a fan 3.
  • the flow of air sucked by said at least one fan 3 is regulated to an air flow value by means of a succession of at least acceleration ramps A and deceleration D of the engine control 4 of said at least a fan 3.
  • This regulation of the air flow sucked by said at least one fan 3 makes it possible to reduce the rotational speed of the motor 4 of said at least one fan 3 of the extractor hood 1 by means of a succession of at least two ramps.
  • a acceleration and deceleration D of said engine 4 so as to use the inertia of the turbine 5 of said at least one fan 3 and to obtain a suction of cooking fumes at a reduced air flow, regular and limiting noise.
  • the step of regulating the flow of air sucked by said at least one fan 3 to the airflow value is implemented outside the cooking periods implemented by a hob 2.
  • the regulation of the air flow sucked by said at least one fan 3 to the air flow value outside the cooking periods implemented by the hob 2 makes it possible to limit the noise nuisance and to suck in continuously the air contained in a room, such as a kitchen, so as to evacuate this air and / or to treat it.
  • the airflow value of said at least one fan 3 outside the cooking periods implemented by a hob 2 is less than an operating airflow value of said at least one fan 3 during the periods cooking used by said hob 2.
  • the air flow generated by the at least one fan 3 outside the cooking periods implemented by the hob 2 is adapted to circulate the air in the room where the suction hood is arranged. 1, in particular in a kitchen, by limiting noise pollution since the air flow is adapted to evacuate and / or treat the odors of this room and the air flow is reduced compared to the conventional operation of the hood 1 using a fixed rotational speed of the motor 4 of said at least one fan 3 during the cooking periods set implemented by the hob 2.
  • the step of regulating an intake airflow is triggered following a step of manually selecting the operating mode of said at least one fan 3 of the extractor hood 1 at a flow rate value. air.
  • the manual selection of the operating mode of said at least one fan 3 of the suction hood 1 to a value of air flow, implementing the modulation of the motor control of said at least one fan 3 by means of a succession of at least ramps of acceleration A and deceleration D, can be achieved for example by a button, a touch pad, or an optical key.
  • selection means is in no way limiting and may be different.
  • the step of regulating an intake airflow is triggered following an automatic operation step of the extractor hood 1 when the hob 2 is determined at a standstill. .
  • the automatic activation of the operating mode of said at least one fan 3 of the suction hood 1 to an air flow value can be carried out for example by a temperature sensor of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined humidity threshold value, and / or an infrared sensor of the extractor hood 1 communicating with a transmitter disposed at the level of the hob 2.
  • the type of sensor is not limiting and may be different.
  • control method of a fume hood 1 comprises a step of stopping the step of regulating a flow of air sucked following a manual shutdown step of said shutdown. minus a fan 3 of said extractor hood 1 to an air flow rate value or following operation of said at least one fan 3 of said extractor hood 1 to an operating air flow rate value of said at least one fan 3 generated by a fixed rotational speed of the motor 4 of said at least one fan 3.
  • the manual selection of the shutdown of said at least one fan 3 of the hood 1, or the operating mode of said at least one fan 3 of the hood 1 at an operating air flow rate of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3, can be achieved for example by a button, a touch pad, or an optical key.
  • selection means is in no way limiting and may be different.
  • control method of a suction hood 1 comprises a step of automatically stopping the step of regulating the flow of air sucked following a step of determining the operation of the the hob 2.
  • Automatic shutdown of the operating mode of said at least one fan 3 of the extractor hood 1 to a value of air flow can be performed by a temperature sensor of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined threshold humidity value, and / or an infrared sensor of the extractor hood 1 communicating with a transmitter disposed at the level of the hob 2.
  • the type of sensor is not limiting and may be different.
  • the step of regulating the flow of air sucked by said at least one fan 3 to the airflow value is implemented when the suction hood 1 is in a standby state.
  • said at least one fan 3 of the suction hood 1 is operated at an operating air flow value of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3.
  • the step of regulating the flow of air sucked by said at least one fan 3 to the air flow value is carried out for a predetermined duration.
  • the suction hood 1 is put into operation by regulating the flow of air sucked by said at least one fan 3 to the air flow value for the predetermined duration.
  • the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value may be for example of the order of 1 hour.
  • the value of the predetermined duration of operation of the hood suction by regulating the flow of air sucked by said at least one fan to the air flow value is not limiting.
  • the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be selected manually or stored by the control means 7, 12.
  • the manual selection of the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value can be carried out by means of selection 9 of the panel 8, such as for example a dedicated key.
  • This selection means 9 can also make it possible to trigger and stop the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value.
  • the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be displayed by a display means 10 of the control panel 8 , such as for example by a display with seven segments.
  • the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be adjusted by incrementing or decrementing the value of said predetermined duration manually by at least one selection means 9 of the control panel 8.
  • Said at least one selection means 9 may for example comprise a key for incrementing the predetermined duration and a key for decrementing the predetermined duration.
  • the adjustment of the predetermined time can be activated by a long press on the selection means 9 for triggering and stopping the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value.
  • the adjustment of the predetermined duration of operation of the extractor hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow rate value can range for example from 1 hour to 9 hours. hours.
  • the value of the adjustment of the predetermined duration of operation of the suction hood by regulating the flow of air sucked by said at least one fan to the air flow value is not limiting.
  • the value of the predetermined duration being adjusted can be displayed by a display means 10 of the control panel 8, for example by flashing of said value.
  • the validation of the predetermined duration following the adjustment of the latter may be automatic after a predefined duration without detection of the activation of at least one selection means 9 allowing this adjustment, which may be for example of the order 10 seconds, or manual by the activation of a selection means 9 for starting and stopping the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value.
  • the adjustment of the predetermined duration can also be canceled by the activation of a selection means 9 of the control panel 8, such as for example a key, in particular during the predefined duration of validation of the predetermined duration.
  • the suction hood 1 stops automatically following the lapse of the predetermined duration of operation of said suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the flow rate value. air.
  • the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value can be changed at any time by one of the selection means 9 of the control panel 8. This change in the predetermined time can occur during the startup of the suction hood 1 regulating the flow of air sucked by said at least one fan 3 to the air flow value .
  • the predetermined duration of operation of the hood 1 can be displayed on a display means 10 of the control panel 8 by pressing on one of the selection means 9 of the control panel 8 when the operation of the suction hood 1 regulating the flow of air sucked by said at least one fan 3 to the air flow value, then said predetermined time can be modified by one or more supports on one of the selection means 9 of the control panel 8 allowing the adjustment of this predetermined time, and this predetermined time can be validated either automatically or manually so that the control device 6 of the suction hood 1 continues to control said at least a fan 3 to the airflow value.
  • the step of regulating the flow of air sucked by said at least one fan 3 to the air flow value is carried out continuously outside the cooking periods implemented by a cooktop 2.
  • said at least one fan 3 of the suction hood 1 is operated at an operating airflow value of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3 during cooking periods implemented by a hob 2, either following a manual selection step or following a step of automatic operation at said operating air flow rate of said at least one fan 3 .
  • the modulation of the motor control of the said less a fan of the suction hood exploits the inertia of the turbine of the at least one fan so as to allow a discontinuous power supply of said motor without stopping the rotation drive.

Abstract

The hood (1) has an aspiration ventilator (3) ventilating fume of cooking. A control unit controls under operation of the ventilator that comprises a motor (4) and a turbine (5). The control unit controls flow of air aspired by the ventilator to a value of air flow by control of the motor along successive acceleration and deceleration ramps of the motor. The control unit controls a driving phase of free wheel rotation of the motor located at the deceleration ramp of the control of the motor. An independent claim is also included for a method for controlling a hood for a cooking fume.

Description

La prƩsente invention concerne d'une part une hotte d'aspiration des fumƩes de cuisson, en particulier une hotte d'aspiration des fumƩes de cuisson domestique, pourvue d'au moins un ventilateur d'aspiration des fumƩes de cuisson et de moyens de commande en fonctionnement dudit au moins un ventilateur.The present invention relates on the one hand to a cooking fume extraction hood, in particular to a domestic cooking fume extraction hood, provided with at least one fume extraction fan and control means. in operation of said at least one fan.

Elle concerne Ʃgalement un procƩdƩ de commande d'une hotte d'aspiration des fumƩes de cuisson pourvue d'au moins un ventilateur d'aspiration des fumƩes de cuisson et de moyens de commande en fonctionnement dudit au moins un ventilateur.It also relates to a control method of a fume extraction hood equipped with at least one fume extraction fan and operating control means of said at least one fan.

Il est courant d'utiliser au-dessus d'une table de cuisson une hotte d'aspiration comportant des moyens d'aspiration des fumƩes de cuisson, comprenant par exemple un ventilateur pourvu d'un moteur et d'une turbine.It is common to use above a hob a fume hood having fume extraction means, comprising for example a fan provided with a motor and a turbine.

Ces hottes d'aspiration sont ƩquipƩes de moyens de commande en fonctionnement des moyens d'aspiration, permettant de dƩclencher manuellement ou automatiquement le fonctionnement des moyens d'aspiration lors de la prƩsence de fumƩes de cuisson.These suction hoods are equipped with control means in operation of the suction means, for triggering manually or automatically the operation of the suction means during the presence of cooking fumes.

On connaƮt ainsi des moyens de commande en fonctionnement d'un ventilateur d'une hotte d'aspiration utilisƩs pour mettre en circulation un flux d'air Ơ un dƩbit d'air faible en commandant le moteur dudit ventilateur Ơ une vitesse de rotation la plus faible possible sur une courte pƩriode, de l'ordre de quelques minutes par heure, de sorte Ơ limiter les nuisances sonores.Operating control means are thus known for operating a fan of a fume hood used to circulate a flow of air at a low air flow rate by controlling the motor of said blower at a most rapid rotation speed. low possible over a short period, of the order of a few minutes per hour, so as to limit noise.

Cependant, ces hottes d'aspiration prĆ©sentent l'inconvĆ©nient de commander le moteur du ventilateur Ć  une vitesse de rotation fixe devant ĆŖtre suffisante pour permettre la mise en fonctionnement dudit moteur dans toutes les conditions de fonctionnement, notamment lorsque le moteur est froid ou la tension du rĆ©seau d'alimentation en Ć©nergie Ć©lectrique est faible.However, these hoods have the disadvantage of controlling the fan motor at a fixed rotational speed to be sufficient to allow the operation of said engine in all operating conditions, especially when the engine is cold or the voltage power supply network is weak.

Par consĆ©quent, cette vitesse de rotation fixe du moteur du ventilateur lors de la commande de ce moteur Ć  une vitesse de rotation la plus faible possible n'est pas optimale et celle-ci peut ĆŖtre plus Ć©levĆ©e que nĆ©cessaire, provoquant ainsi des nuisances sonores.Consequently, this fixed rotation speed of the fan motor during the control of this motor at the lowest possible rotation speed is not optimal and it may be higher than necessary, thus causing noise nuisance.

En outre, le ventilateur de ces hottes d'aspiration se dƩclenche Ơ diffƩrents instants lors de la commande de celui-ci par les moyens de commande.In addition, the fan of these suction hoods is triggered at different times when the control of the latter by the control means.

Par consĆ©quent, la circulation du flux d'air engendrĆ© par le ventilateur de ces hottes d'aspiration est discontinue. Et cette circulation du flux d'air discontinue peut surprendre l'utilisateur par son dĆ©clenchement Ć  diffĆ©rents instants, pouvant notamment ĆŖtre associĆ©e Ć  un dysfonctionnement de ces hottes d'aspirations.Therefore, the flow of air generated by the fan of these hoods is discontinuous. And this circulation of the discontinuous air flow can surprise the user by triggering at different times, which may be associated with a malfunction of these hoods aspirations.

On connaĆ®t Ć©galement le document DE 10 2004 055 944 A1 qui dĆ©crit un dispositif pour ventiler une surface de cuisson ou la zone entourant cette derniĆØre. Ce dispositif comprend un ventilateur, un dispositif servant Ć  activer ce dernier de sorte qu'il fonctionne Ć  une certaine puissance et pour une certaine durĆ©e Ć  intervalles pĆ©riodiques ainsi qu'un dispositif de rĆ©glage comportant un Ć©lĆ©ment d'entrĆ©e servant Ć  activer la ventilation intermittente.The document is also known DE 10 2004 055 944 A1 which describes a device for ventilating a cooking surface or the area surrounding it. This device comprises a fan, a device used to activate the latter so that it operates at a certain power and for a period of time at periodic intervals and an adjusting device comprising an input element for activating the intermittent ventilation.

La prƩsente invention a pour but de rƩsoudre les inconvƩnients prƩcitƩs et de proposer une hotte d'aspiration des fumƩes de cuisson et un procƩdƩ de commande d'une telle hotte d'aspiration permettant d'obtenir un flux d'air aspirƩ par au moins un ventilateur Ơ un dƩbit d'air rƩduit en consommant un minimum d'Ʃnergie et en limitant le niveau de nuisances sonores, tout en garantissant un fonctionnement sans endommagement du moteur et sans provoquer de surcoƻt pour l'obtention de ladite hotte d'aspiration.The object of the present invention is to solve the aforementioned drawbacks and to propose a fume extraction hood and a control method for such a fume hood making it possible to obtain a flow of air sucked by at least one fan at a reduced air flow while consuming a minimum of energy and by limiting the level of noise, while ensuring operation without damage to the engine and without causing additional cost to obtain said hood.

A cet effet, la prƩsente invention vise, selon un premier aspect, une hotte d'aspiration des fumƩes de cuisson comportant au moins un ventilateur d'aspiration des fumƩes de cuisson, des moyens de commande en fonctionnement dudit au moins un ventilateur, ledit au moins un ventilateur comportant un moteur et une turbine.For this purpose, the present invention aims, in a first aspect, a fume extraction hood with at least one fume extraction fan, control means in operation of said at least one fan, said minus a fan comprising a motor and a turbine.

Selon l'invention, lesdits moyens de commande rƩgulent un flux d'air aspirƩ par ledit au moins un ventilateur Ơ une valeur de dƩbit d'air au moyen d'une commande dudit moteur suivant une succession au moins de rampes d'accƩlƩration et de dƩcƩlƩration dudit moteur.According to the invention, said control means regulate a flow of air sucked by said at least one fan to a value of air flow by means of a control of said motor in a succession of at least acceleration ramps and deceleration of said engine.

Ainsi, la vitesse moyenne de rotation du moteur dudit au moins un ventilateur de la hotte d'aspiration est rƩduite au moyen d'une succession au moins de rampes d'accƩlƩration et de dƩcƩlƩration dudit moteur de sorte Ơ utiliser l'inertie de la turbine dudit au moins un ventilateur et Ơ obtenir une aspiration des fumƩes de cuisson Ơ un dƩbit d'air rƩduit, rƩgulier et limitant les nuisances sonores.Thus, the average rotational speed of the motor of said at least one fan of the suction hood is reduced by means of a succession of at least ramps of acceleration and deceleration of said motor so as to use the inertia of the turbine said at least one fan and to obtain suction fumes cooking at a reduced air flow, regular and limiting noise.

L'utilisation de l'inertie de la turbine lors de son entraƮnement en rotation par le moteur dudit au moins un ventilateur permet de minimiser la consommation d'Ʃnergie Ʃlectrique.The use of the inertia of the turbine during its rotational drive by the motor of said at least one fan minimizes the consumption of electrical energy.

La commande du moteur dudit au moins un ventilateur suivant une succession au moins de rampes d'accƩlƩration et de dƩcƩlƩration dudit moteur permet Ʃgalement de garantir un fonctionnement sans endommagement dudit moteur dans toutes les conditions de fonctionnement, notamment lorsque le moteur est froid ou la tension secteur est faible.The motor control of the at least one fan in a succession of at least ramps of acceleration and deceleration of said motor also ensures operation without damage to said engine in all operating conditions, especially when the engine is cold or the voltage sector is weak.

En outre, cette commande du moteur dudit au moins un ventilateur suivant des rampes d'accƩlƩration et de dƩcƩlƩration dudit moteur permet de garantir l'efficacitƩ d'aspiration et sans provoquer de surcoƻt pour l'obtention de la hotte d'aspiration.In addition, this motor control of said at least one fan following ramps of acceleration and deceleration of said motor ensures the suction efficiency and without causing additional cost to obtain the suction hood.

Une hotte d'aspiration conforme Ć  l'invention permet de crĆ©er une circulation d'air engendrĆ©e par ledit au moins un ventilateur Ć  une valeur de dĆ©bit d'air de maniĆØre continue et sans dĆ©marrage de l'entraĆ®nement en rotation de la turbine dudit au moins un ventilateur Ć  une frĆ©quence dĆ©terminĆ©e.A suction hood according to the invention makes it possible to create an air flow generated by said at least one fan at an air flow rate value in a continuous manner and without starting the rotary drive of the turbine of said minus one fan at a specified frequency.

De cette maniĆØre, la circulation du flux d'air aspirĆ© par ledit au moins un ventilateur de la hotte d'aspiration est continue de sorte Ć  Ć©viter des dĆ©sagrĆ©ments pour l'utilisateur liĆ©s Ć  la mise en fonctionnement discontinue de ladite hotte d'aspiration.In this way, the circulation of the air flow sucked by said at least one fan of the suction hood is continuous so as to avoid inconvenience to the user related to the discontinuous operation of said hood.

Selon une caractƩristique prƩfƩrƩe de l'invention, lesdits moyens de commande rƩgulent ledit flux d'air aspirƩ par ledit au moins un ventilateur Ơ ladite valeur de dƩbit d'air en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson.According to a preferred feature of the invention, said control means regulate said air flow sucked by said at least one fan to said air flow value outside the cooking periods implemented by a hob.

Ainsi, l'air contenu dans un local telle qu'une cuisine est aspirĆ© de maniĆØre Ć  extraire des fumĆ©es de cuisson ou des odeurs en dehors des pĆ©riodes de cuisson mises en oeuvre par une table de cuisson, ainsi que de renouveler l'air dans un tel local, notamment pour Ć©vacuer et/ou traiter des odeurs de fumĆ©e de cigarettes.Thus, the air contained in a room such as a kitchen is sucked so as to extract cooking fumes or odors outside the cooking periods implemented by a hob, and to renew the air in the kitchen. such a room, especially for evacuating and / or treating smells of cigarette smoke.

Une hotte d'aspiration conforme Ơ l'invention permet de remplacer ou de complƩter un dispositif de ventilation mƩcanique contrƓlƩe classique mis en place dans les habitations, et en particulier dans les cuisines.A suction hood according to the invention makes it possible to replace or supplement a conventional controlled mechanical ventilation device set up in homes, and in particular in kitchens.

Une telle hotte d'aspiration permet au moyen d'une commande du moteur dudit au moins un ventilateur d'entraƮner la turbine de celui-ci Ơ une vitesse de rotation faible de sorte Ơ minimiser la consommation d'Ʃnergie Ʃlectrique et Ơ limiter le niveau de nuisances sonores dans ce mode de fonctionnement en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson, tout en garantissant un fonctionnement sans endommagement du moteur dudit au moins un ventilateur et l'efficacitƩ d'aspiration des fumƩes de cuisson.Such a suction hood allows by means of a motor control of said at least one fan to drive the turbine thereof at a low rotational speed so as to minimize the consumption of electrical energy and to limit the level noise nuisance in this mode of operation outside the cooking periods implemented by a hob, while ensuring operation without damage to the engine of said at least one fan and the suction efficiency of cooking fumes.

PrƩfƩrentiellement, ladite valeur de dƩbit d'air dudit au moins un ventilateur en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson est infƩrieure Ơ une valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur au cours des pƩriodes de cuisson mises en oeuvre par ladite table de cuisson.Preferably, said airflow value of said at least one fan outside the cooking periods implemented by a hob is less than an operating airflow value of said at least one fan during periods of operation. cooking implemented by said hob.

La prƩsente invention vise, selon un second aspect, un procƩdƩ de commande d'une hotte d'aspiration des fumƩes de cuisson comportant au moins un ventilateur d'aspiration des fumƩes de cuisson, des moyens de commande en fonctionnement dudit au moins un ventilateur, ledit au moins un ventilateur comportant un moteur et une turbine.The present invention aims, according to a second aspect, a control method of a fume hood fume hood comprising at least one fume extraction fan, operating control means of said at least one fan, said at least one fan comprising a motor and a turbine.

Selon l'invention, le procƩdƩ de commande d'une hotte d'aspiration des fumƩes de cuisson comporte au moins une Ʃtape :

  • rĆ©gulation d'un flux d'air aspirĆ© par ledit au moins un ventilateur Ć  une valeur de dĆ©bit d'air au moyen d'une commande dudit moteur suivant une succession au moins de rampes d'accĆ©lĆ©ration et de dĆ©cĆ©lĆ©ration dudit moteur.
According to the invention, the method of controlling a fume extraction hood includes at least one step:
  • controlling a flow of air sucked by said at least one fan to a value of air flow by means of a control of said motor in a succession of at least ramps of acceleration and deceleration of said engine.

Ce procƩdƩ de commande d'une hotte d'aspiration des fumƩes de cuisson prƩsente des avantages analogues Ơ ceux dƩcrits prƩcƩdemment en rƩfƩrence Ơ la hotte d'aspiration des fumƩes de cuisson selon l'invention.This method of controlling a fume extraction hood has advantages similar to those described above with reference to the hood fume extraction cooking according to the invention.

En particulier, le flux d'air aspirƩ par ledit au moins un ventilateur est rƩgulƩ Ơ une valeur de dƩbit d'air au moyen d'une succession au moins de rampes d'accƩlƩration et de dƩcƩlƩration de la commande du moteur dudit au moins un ventilateur.In particular, the flow of air sucked by said at least one fan is regulated to an air flow value by means of a succession of at least ramps of acceleration and deceleration of the motor control of said at least one fan.

Cette rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur permet de rƩduire la vitesse de rotation du moteur dudit au moins un ventilateur de la hotte d'aspiration au moyen d'une succession au moins de rampes d'accƩlƩration et de dƩcƩlƩration dudit moteur de sorte Ơ utiliser l'inertie de la turbine dudit au moins un ventilateur et Ơ obtenir une aspiration des fumƩes de cuisson Ơ un dƩbit d'air rƩduit, rƩgulier et limitant les nuisances sonores.This regulation of the air flow sucked by the at least one fan makes it possible to reduce the rotational speed of the motor of the at least one fan of the extractor hood by means of a succession of at least one acceleration and deceleration ramps. said engine so as to use the inertia of the turbine of said at least one fan and to obtain a suction of cooking fumes at a reduced air flow, regular and limiting noise.

D'autres particularitĆ©s et avantages apparaĆ®tront encore dans la description ci-aprĆØs.Other features and advantages will become apparent in the description below.

Aux dessins annexƩs, donnƩs Ơ titre d'exemples non limitatifs :

  • la figure 1 est une vue schĆ©matique illustrant une hotte d'aspiration conforme Ć  un mode de rĆ©alisation de l'invention associĆ©e Ć  une table de cuisson ;
  • la figure 2A est un chronogramme illustrant des courbes de puissance dĆ©livrĆ©e au moteur dudit au moins un ventilateur en fonction du temps lors de la mise en oeuvre d'une hotte d'aspiration conforme Ć  un premier mode de rĆ©alisation de l'invention ;
  • la figure 2B est un chronogramme illustrant des courbes de puissance dĆ©livrĆ©e au moteur dudit au moins un ventilateur en fonction du temps lors de la mise en oeuvre d'une hotte d'aspiration conforme Ć  un deuxiĆØme mode de rĆ©alisation de l'invention ;
  • la figure 3 reprĆ©sente un schĆ©ma fonctionnel d'un dispositif de commande d'une hotte d'aspiration selon un mode de rĆ©alisation de l'invention ;
  • la figure 4 est un oscillogramme illustrant les courbes de paramĆØtres Ć©lectriques dans le dispositif de commande de la figure 3 Ć©tant alimentĆ© en Ć©nergie Ć©lectrique sur une pĆ©riode de temps Ć©gale Ć  100ms ;
  • la figure 5 est une vue analogue Ć  la figure 4, le dispositif de commande de la figure 3 Ć©tant alimentĆ© en Ć©nergie Ć©lectrique sur une pĆ©riode de temps Ć©gale Ć  700ms ; et
  • la figure 6 est une vue analogue aux figures 4 et 5, le dispositif de commande de la figure 3 Ć©tant alimentĆ© en Ć©nergie Ć©lectrique sur une pĆ©riode de temps Ć©gale Ć  2000ms.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 is a schematic view illustrating a suction hood according to an embodiment of the invention associated with a hob;
  • the Figure 2A is a timing diagram illustrating power curves delivered to the motor of said at least one fan as a function of time during the implementation of a suction hood according to a first embodiment of the invention;
  • the Figure 2B is a timing diagram illustrating power curves delivered to the motor of said at least one fan as a function of time during the implementation of a suction hood according to a second embodiment of the invention;
  • the figure 3 represents a block diagram of a control device of a suction hood according to one embodiment of the invention;
  • the figure 4 is an oscillogram illustrating the curves of electrical parameters in the control device of the figure 3 being supplied with electrical energy over a period of time equal to 100ms;
  • the figure 5 is a view similar to the figure 4 , the control device of the figure 3 being supplied with electrical energy over a period of time equal to 700 ms; and
  • the figure 6 is a view similar to figures 4 and 5 , the control device of the figure 3 being supplied with electrical energy over a period of time equal to 2000ms.

On va dƩcrire tout d'abord, en rƩfƩrence Ơ la figure 1, une hotte d'aspiration des fumƩes de cuisson conforme Ơ un mode de rƩalisation de l'invention.We will describe first, with reference to the figure 1 , a fume hood cooking fumes according to one embodiment of the invention.

Comme illustrĆ© Ć  la figure 1, une telle hotte d'aspiration 1 est destinĆ©e Ć  ĆŖtre placĆ©e au-dessus d'une table de cuisson 2 afin d'aspirer, et d'Ć©vacuer et/ou de traiter les Ć©manations provenant de la cuisson d'aliments sur la table de cuisson 2.As illustrated in figure 1 , such a suction hood 1 is intended to be placed above a hob 2 to suck, and to evacuate and / or treat the fumes from cooking food on the table of cooking 2.

Cette hotte d'aspiration 1 comporte de maniĆØre connue au moins un ventilateur d'aspiration des fumĆ©es de cuisson 3.This suction hood 1 comprises in known manner at least one suction fan for cooking fumes 3.

GƩnƩralement, ledit au moins un ventilateur 3 comporte un moteur 4 et une turbine 5 permettant d'aspirer les fumƩes de cuisson au cours des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2.Generally, said at least one fan 3 comprises a motor 4 and a turbine 5 for sucking the cooking fumes during cooking periods implemented by a hob 2.

Un dispositif de commande 6, tel qu'illustrƩ Ơ la figure 3, permet de commander le fonctionnement dudit au moins un ventilateur 3, notamment le fonctionnement du moteur 4 d'entraƮnement en rotation de la turbine 5 dudit au moins un ventilateur 3.A control device 6, as illustrated in FIG. figure 3 , makes it possible to control the operation of said at least one fan 3, in particular the operation of the motor 4 for rotating the turbine 5 of said at least one fan 3.

Le dispositif de commande 6 du fonctionnement de la hotte d'aspiration 1 comprend en particulier des moyens de commande 7 proprement dits, tels que par exemple au moins un microcontrƓleur 12, permettant de commander le fonctionnement dudit au moins un ventilateur 3, via son moteur 4.The control device 6 of the operation of the suction hood 1 comprises in particular control means 7 themselves, such as for example at least one microcontroller 12, for controlling the operation of said at least one fan 3, via its motor. 4.

Il comporte Ʃgalement un panneau de commande 8 comportant des moyens de sƩlection 9, tels que par exemple des touches sensitives, des boutons, et Ʃventuellement des moyens d'affichage 10, tels que par exemple un afficheur, des voyants.It also comprises a control panel 8 comprising selection means 9, such as for example touch keys, buttons, and possibly display means 10, such as for example a display, lights.

Un comparateur 11 est en outre adaptƩ Ơ dƩtecter le franchissement de la valeur nulle de la tension secteur UA.A comparator 11 is further adapted to detect the crossing of the zero value of the mains voltage U A.

Les moyens de commande 7, 12 du moteur 4 utilisent une gradation de la tension secteur UA au moyen d'un triac 13 commandƩ par un microcontrƓleur 12.The control means 7, 12 of the motor 4 use a gradation of the mains voltage U A by means of a triac 13 controlled by a microcontroller 12.

Les moyens de commande 7, 12 rƩalisant la rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 emploient une gradation de la tension secteur UA au moyen du triac 13 commandƩ par le microcontrƓleur 12.The control means 7, 12 carrying out the regulation of the air flow sucked by said at least one fan 3 use a gradation of the mains voltage U A by means of the triac 13 controlled by the microcontroller 12.

Cette gradation de la tension secteur UA consiste Ơ appliquer une consigne de temps de conduction au triac 13 en boucle ouverte. Le triac 13 permet d'appliquer ou non avec prƩcision la tension secteur UA aux bornes du moteur 4 dudit au moins un ventilateur 3 de sorte Ơ mettre en oeuvre cette gradation de la tension secteur UA.This gradation of the mains voltage U A consists of applying a set of conduction times to the triac 13 in an open loop. The triac 13 makes it possible to accurately apply or not to apply the mains voltage U A to the terminals of the motor 4 of said at least one fan 3 so as to implement this gradation of the mains voltage U A.

En sortie du comparateur 11, un signal de synchronisation secteur UB est issu de la tension secteur UA permettant au microcontrĆ“leur 12 de dĆ©terminer l'instant oĆ¹ le triac 13 est Ć  amorcer.At the output of the comparator 11, a sector synchronization signal U B is derived from the mains voltage U A allowing the microcontroller 12 to determine the moment when the triac 13 is to be initiated.

Le triac 13 est amorcƩ en fonction du signal de synchronisation secteur UB issu de la tension secteur UA.The triac 13 is initiated according to the sector synchronization signal U B from the mains voltage U A.

Le microcontrĆ“leur 12 gĆ©nĆØre un signal de commande Uc du triac 13 permettant de commander le fonctionnement du moteur 4 dudit au moins un ventilateur 3.The microcontroller 12 generates a control signal U c of the triac 13 for controlling the operation of the motor 4 of said at least one fan 3.

Et le moteur 4 dudit au moins un ventilateur 3 a une tension UD Ơ ses bornes dƩpendante de la tension secteur UA et du signal de commande UC du triac 13.And the motor 4 of said at least one fan 3 has a voltage U D at its terminals depending on the mains voltage U A and the control signal U C of the triac 13.

La tension secteur UA est dƩfinie par une pƩriode secteur composƩe d'une alternance positive et d'une alternance nƩgative.The mains voltage U A is defined by a sector period consisting of a positive half cycle and a negative half cycle.

En rƩfƩrence aux figures 3 et 4, le dispositif de commande 6 du fonctionnement de la hotte d'aspiration 1 est alimentƩ en Ʃnergie Ʃlectrique avec la tension secteur UA et dƩlivre le signal de synchronisation secteur UB issu de la tension secteur UA, le signal de commande UC du triac 13 gƩnƩrƩ par le microcontrƓleur 12 Ơ partir du signal de synchronisation secteur UB, et la tension rƩsultante UD aux bornes du moteur 4 Ơ partir de la tension secteur UA et du signal de commande UC du triac 13.With reference to figures 3 and 4 , the control device 6 of the operation of the suction hood 1 is supplied with electrical energy with the mains voltage U A and delivers the sector synchronization signal U B from the mains voltage U A , the control signal U C of the triac 13 generated by the microcontroller 12 from the sector synchronization signal U B , and the resulting voltage U D at the terminals of the motor 4 from the mains voltage U A and the control signal U C of the triac 13.

En retardant l'amorƧage du triac 13, correspondant au passage Ơ 5V du signal de commande UC du triac 13, la tension UD appliquƩe aux bornes du moteur 4 est limitƩe Ơ une fraction d'une alternance de la tension secteur UA.By delaying the initiation of the triac 13 corresponding to the transition to 5V of the control signal U C of the triac 13, the voltage U D applied across the motor 4 is limited to a fraction of an alternation of the mains voltage U A.

Ainsi, plus le temps de conduction du triac 13 est faible, plus la fraction d'une alternance de la tension secteur UA est faible, et donc la puissance dƩlivrƩe au moteur 4 est faible.Thus, the lower the conduction time of the triac 13, the lower the fraction of an alternation of the mains voltage U A is low, and therefore the power delivered to the motor 4 is low.

Le dispositif de commande 6 du fonctionnement de la hotte d'aspiration 1 est adaptƩ Ơ synchroniser le microcontrƓleur 12 avec le passage Ơ la valeur nulle de la tension secteur UA au moyen du comparateur 11 de sorte Ơ obtenir une commande prƩcise du triac 13.The control device 6 of the operation of the suction hood 1 is adapted to synchronize the microcontroller 12 with the passage to the zero value of the mains voltage U A by means of the comparator 11 so as to obtain precise control of the triac 13.

De cette maniĆØre, lors du franchissement de la valeur nulle de la tension secteur UA, le microcontrĆ“leur 12 dĆ©compte le temps avant l'amorƧage du triac 13 de sorte Ć  commander ledit triac 13 Ć  l'instant prĆ©cis oĆ¹ la tension UD est Ć  appliquer aux bornes du moteur 4.In this way, when crossing the zero value of the mains voltage U A , the microcontroller 12 counts the time before the priming of the triac 13 so as to control said triac 13 at the precise instant when the voltage U D is at apply to the motor terminals 4.

Suite Ć  l'amorƧage du triac 13, c'est-Ć -dire que le triac 13 conduit, ledit triac 13 s'ouvre de lui-mĆŖme lorsque le courant circulant dans le moteur 4 s'annule, c'est-Ć -dire Ć  la fin de chaque alternance de la tension secteur UA. Par consĆ©quent, le triac 13 doit ĆŖtre amorcĆ© au cours de chaque alternance de la tension secteur UA.Following the initiation of the triac 13, that is to say that the triac 13 leads, said triac 13 opens of itself when the current flowing in the motor 4 is canceled, that is to say say at the end of each alternation of the mains voltage U A. Therefore, the triac 13 must be initiated during each alternation of the mains voltage U A.

On va dƩcrire Ơ prƩsent, en rƩfƩrence aux figures 1, 2A et 2B, la commande en fonctionnement dudit au moins un ventilateur d'une hotte d'aspiration conforme Ơ l'invention.We will now describe, with reference to figures 1 , 2A and 2B operating control of said at least one fan of a suction hood according to the invention.

Les moyens de commande 7, 12 rƩgulent un flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ une valeur de dƩbit d'air au moyen d'une commande du moteur 4 suivant une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4, tel qu'illustrƩ aux figures 2A et 2B.The control means 7, 12 regulate a flow of air sucked by said at least one fan 3 to an air flow value by means of a control of the engine 4 in a succession of at least acceleration ramps A and of deceleration D of said engine 4, as illustrated in FIGS. Figures 2A and 2B .

Cette valeur de dĆ©bit d'air, dit rĆ©duit, dudit au moins un ventilateur 3 peut ĆŖtre infĆ©rieure Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur 3 engendrĆ©e par une vitesse de rotation minimale fixe du moteur 4 dudit au moins un ventilateur 3.This air flow rate, said reduced, of said at least one fan 3 may be less than an operating air flow value of said at least one fan 3 generated by a fixed minimum rotation speed of the motor 4 of said at least one fan 3.

La vitesse moyenne de rotation du moteur 4 dudit au moins un ventilateur 3 de la hotte d'aspiration 1 est rƩduite au moyen d'une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4 de sorte Ơ utiliser l'inertie de la turbine 5 dudit au moins un ventilateur 3 et Ơ obtenir une aspiration des fumƩes de cuisson Ơ un dƩbit d'air rƩduit, rƩgulier et limitant les nuisances sonores.The average speed of rotation of the motor 4 of said at least one fan 3 of the extractor hood 1 is reduced by means of a succession of at least ramps of acceleration A and deceleration D of said motor 4 so as to use the inertia of the turbine 5 of said at least one fan 3 and to obtain suction fumes cooking at a reduced air flow, regular and limiting noise.

L'utilisation de l'inertie de la turbine 5 lors de son entraƮnement en rotation par le moteur 4 dudit au moins un ventilateur 3 permet de minimiser la consommation d'Ʃnergie Ʃlectrique.The use of the inertia of the turbine 5 during its rotational drive by the motor 4 of said at least one fan 3 minimizes the consumption of electrical energy.

La commande du moteur 4 dudit au moins un ventilateur 3 suivant des rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4 permet Ʃgalement de garantir un fonctionnement sans endommagement dudit moteur 4 dans toutes les conditions de fonctionnement, notamment lorsque le moteur 4 est froid ou la tension du rƩseau secteur UA est faible.The control of the motor 4 of said at least one fan 3 along acceleration ramps A and deceleration D of said engine 4 also makes it possible to guarantee operation without damage to said engine 4 under all operating conditions, in particular when the engine 4 is cold. or the mains voltage U A is low.

En outre, cette commande du moteur 4 dudit au moins un ventilateur 3 suivant des rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4 permet de garantir l'efficacitƩ d'aspiration et sans provoquer de surcoƻt pour l'obtention de la hotte d'aspiration 1.In addition, this control of the motor 4 of said at least one fan 3 according to ramps of acceleration A and deceleration D of said motor 4 makes it possible to guarantee the suction efficiency and without causing additional cost to obtain the hood of the engine. suction 1.

La hotte d'aspiration 1 permet de crĆ©er une circulation d'air engendrĆ©e par ledit au moins un ventilateur 3 Ć  une valeur de dĆ©bit d'air de maniĆØre continue et sans dĆ©marrage de l'entraĆ®nement en rotation de la turbine 5 dudit au moins un ventilateur 3 Ć  une frĆ©quence dĆ©terminĆ©e.The suction hood 1 makes it possible to create a flow of air generated by said at least one fan 3 at an air flow rate value in a continuous manner and without starting the rotary drive of the turbine 5 of said at least one fan 3 at a determined frequency.

De cette maniĆØre, la circulation du flux d'air aspirĆ© par ledit au moins un ventilateur 3 de la hotte d'aspiration 1 est continue de sorte Ć  Ć©viter des dĆ©sagrĆ©ments pour l'utilisateur liĆ©s Ć  la mise en fonctionnement discontinue de ladite hotte d'aspiration 1.In this way, the circulation of the air flow sucked by said at least one fan 3 of the hood 1 is continuous so as to avoid inconvenience to the user related to the discontinuous operation of said hood. suction 1.

Aux figures 2A et 2B, la puissance dƩlivrƩe Pu au moteur 4 dudit au moins un ventilateur 3 est exprimƩe en pourcentage en fonction du temps, par exemple en secondes.To the Figures 2A and 2B , the power delivered Pu to the motor 4 of said at least one fan 3 is expressed as a percentage as a function of time, for example in seconds.

La courbe en trait continu illustre la puissance dƩlivrƩe Pu au moteur 4 dudit au moins un ventilateur 3 soumis lors de sa commande Ơ au moins des rampes d'accƩlƩration A et de dƩcƩlƩration D de sorte Ơ moduler la vitesse de rotation dudit moteur 4.The curve in solid line illustrates the power delivered Pu to the motor 4 of said at least one fan 3 subjected during its control to at least ramps of acceleration A and deceleration D so as to modulate the speed of rotation of said motor 4.

La courbe en trait continu des figures 2A et 2B illustre les rampes d'accĆ©lĆ©ration A et les rampes de dĆ©cĆ©lĆ©ration D pouvant ĆŖtre mises en oeuvre pĆ©riodiquement. Au cours d'une pĆ©riode T, le moteur 4 dudit au moins un ventilateur 3 peut ĆŖtre soumis Ć  une ou plusieurs rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D pouvant ĆŖtre successives ou non, et de valeurs identiques ou diffĆ©rentes.The continuous line curve of the Figures 2A and 2B illustrates the acceleration ramps A and deceleration ramps D can be implemented periodically. During a period T, the motor 4 of said at least one fan 3 may be subjected to one or more acceleration ramps A and deceleration D which may be successive or not, and of identical or different values.

Le sommet de la courbe en trait continu, illustrant la puissance dƩlivrƩe Pu au moteur 4 dudit au moins un ventilateur 3 soumis lors de sa commande Ơ au moins des rampes d'accƩlƩration A et de dƩcƩlƩration D, correspond au niveau de puissance dƩlivrƩe Pu assurant un entraƮnement de la turbine 5 dudit au moins un ventilateur 3 Ơ une vitesse de rotation suffisante de sorte Ơ obtenir un dƩbit d'air conforme Ơ la commande du moteur 4 dudit au moins un ventilateur 3.The top of the curve in solid line, illustrating the power delivered Pu to the motor 4 of the at least one fan 3 subjected when it is controlled to at least ramps of acceleration A and deceleration D, corresponds to the power level delivered Pu assuring a drive of the turbine 5 of said at least one fan 3 at a sufficient speed of rotation so as to obtain an air flow in accordance with the control of the motor 4 of said at least one fan 3.

La valeur de ce niveau de puissance dƩlivrƩe Pu assurant un entraƮnement de la turbine 5 dudit au moins un ventilateur 3 Ơ une vitesse de rotation suffisante est dƩpendante des caractƩristiques du moteur 4 dudit au moins un ventilateur 3.The value of this delivered power level Pu ensuring a drive of the turbine 5 of said at least one fan 3 at a sufficient speed of rotation is dependent on the characteristics of the motor 4 of said at least one fan 3.

Lors d'expĆ©rimentations mises en oeuvre par la Demanderesse, cette valeur de puissance dĆ©livrĆ©e au moteur 4 est de l'ordre de 20W en valeur moyenne pour un moteur 4 de ventilateur 3 dĆ©livrant un dĆ©bit d'air maximum de 800m3/h, oĆ¹ le retard Ć  l'amorƧage du triac 13 est supĆ©rieur ou Ć©gal Ć  6,5ms pour un dĆ©bit d'air du ventilateur 3 de l'ordre de 100m3/h engendrĆ© par une commande dudit moteur 4 suivant une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D dudit moteur 4.During experiments carried out by the Applicant, this power value delivered to the engine 4 is of the order of 20W in average value for a motor 4 of fan 3 delivering a maximum air flow of 800m 3 / h, where the delay at initiation of the triac 13 is greater than or equal to 6.5 ms for an air flow of the fan 3 of the order of 100 m 3 / h generated by a control of said motor 4 in a succession of at least two ramps acceleration A and deceleration D of said motor 4.

Avec ce mĆŖme moteur, la puissance dĆ©livrĆ©e au moteur 4 est de l'ordre de 60W en valeur moyenne, oĆ¹ le retard Ć  l'amorƧage du triac 13 est Ć©gal Ć  6,5ms pour un dĆ©bit d'air en fonctionnement du ventilateur 3 de l'ordre de 225m3/h engendrĆ© par une commande dudit moteur 4 Ć  une vitesse de rotation fixe.With this same motor, the power delivered to the motor 4 is of the order of 60W in average value, where the triac 13 ignition delay is equal to 6.5ms for an operating air flow of the fan 3 of the order of 225m 3 / h generated by a control of said motor 4 at a fixed rotational speed.

La puissance dĆ©livrĆ©e au moteur 4 est de l'ordre de 130W en valeur moyenne, oĆ¹ le retard Ć  l'amorƧage du triac 13 est Ć©gal Ć  5,3ms pour un dĆ©bit d'air en fonctionnement du ventilateur 3 de l'ordre de 380m3/h engendrĆ© par une commande dudit moteur 4 Ć  une vitesse de rotation fixe.The power delivered to the engine 4 is of the order of 130W in average value, where the triac 13 ignition delay is equal to 5.3ms for an operating air flow of the fan 3 of the order of 380m 3 / h generated by a control of said motor 4 at a fixed rotational speed.

La puissance dĆ©livrĆ©e au moteur 4 est de l'ordre de 210W en valeur moyenne, oĆ¹ le retard Ć  l'amorƧage du triac 13 est Ć©gal Ć  3,8ms pour un dĆ©bit d'air en fonctionnement du ventilateur 3 de l'ordre de 550m3/h engendrĆ© par une commande dudit moteur 4 Ć  une vitesse de rotation fixe.The power delivered to the engine 4 is of the order of 210W in average value, where the delay in the priming of the triac 13 is equal to 3.8ms for a flow of air in operation of the fan 3 of the order of 550m 3 / h generated by a control of said motor 4 at a fixed rotational speed.

Et, la puissance dĆ©livrĆ©e au moteur 4 est de l'ordre de 280W en valeur moyenne, oĆ¹ le triac 13 conduit en permanence pour un dĆ©bit d'air en fonctionnement du ventilateur 3 de l'ordre de 710m3/h engendrĆ© par une commande dudit moteur 4 Ć  une vitesse de rotation fixe.And, the power delivered to the engine 4 is of the order of 280W in average value, where the triac 13 permanently drives for an operating air flow of the fan 3 of the order of 710m 3 / h generated by a control said motor 4 at a fixed rotational speed.

Bien entendu, les valeurs prĆ©cisĆ©es ci-dessus ne sont nullement limitatives et peuvent ĆŖtre diffĆ©rentes.Of course, the values specified above are in no way limiting and may be different.

Le retard maximum thƩorique Ơ l'amorƧage du triac 13 est Ʃgal Ơ la durƩe d'une alternance de la tension secteur UA, soit 10ms pour une tension secteur UA ayant une frƩquence de 50Hz.The theoretical maximum delay at initiation of the triac 13 is equal to the duration of an alternation of the mains voltage U A , ie 10 ms for a mains voltage U A having a frequency of 50 Hz.

La rƩduction de la durƩe de conduction du triac 13, par le retard Ơ l'amorƧage du triac 13, permet de rƩduire le temps d'application de la tension secteur UD au moteur 4 dudit au moins un ventilateur 3 de sorte Ơ rƩduire la puissance dƩlivrƩe Pu audit moteur 4.Reduction of the conduction time of triac 13, by the delay in priming the triac 13, makes it possible to reduce the time of application of the mains voltage U D to the motor 4 of said at least one fan 3 so as to reduce the power delivered Pu to said motor 4.

De cette maniĆØre, la consommation d'Ć©nergie Ć©lectrique par la hotte d'aspiration 1 est minimisĆ©e et le niveau de bruit gĆ©nĆ©rĆ© par celle-ci est rĆ©duit par la diminution du dĆ©bit d'air du flux d'air aspirĆ© par ledit au moins un ventilateur 3.In this way, the consumption of electrical energy by the hood 1 is minimized and the noise level generated by it is reduced by the decrease of the air flow of the air flow sucked by said at least one fan 3.

La combinaison de l'utilisation d'une commande du moteur 4 suivant une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D dudit moteur 4 et d'un retard Ć  l'amorƧage du triac 13 lors d'un mode de fonctionnement dudit au moins un ventilateur 3 Ć  une valeur de dĆ©bit d'air permet de rĆ©duire la puissance dĆ©livrĆ©e Pu audit moteur 4 par rapport Ć  un mode de fonctionnement Ć  vitesse de rotation fixe dudit moteur 4 oĆ¹ ledit moteur 4 est commandĆ© avec un retard Ć  l'amorƧage du triac 13 d'une valeur Ć©quivalente.The combination of the use of a motor control 4 following a succession of at least ramps of acceleration A and deceleration D of said motor 4 and a delay in priming the triac 13 during a mode of operation said at least one fan 3 to an air flow value makes it possible to reduce the power delivered Pu to said engine 4 with respect to a fixed rotational speed operating mode of said engine 4 where said engine 4 is controlled with a delay at priming the triac 13 with an equivalent value.

Les rampes d'accƩlƩration A du moteur 4 dudit au moins un ventilateur 3 permettent de limiter les Ơ-coups dans ledit moteur 4 lors de sa mise en fonctionnement.The acceleration ramps A of the motor 4 of said at least one fan 3 make it possible to limit jolts in said motor 4 when it is put into operation.

Les rampes de dƩcƩlƩration D du moteur 4 dudit au moins un ventilateur 3 permettent d'Ʃviter une mise en roue libre brutale dudit moteur 4, et en particulier d'Ʃviter le redƩmarrage du moteur 4 par une forte accƩlƩration lors d'une augmentation de la puissance dƩlivrƩe Pu audit moteur 4.The deceleration ramps D of the engine 4 of said at least one fan 3 make it possible to avoid abrupt freewheeling of said engine 4, and in particular to avoid the restart of the engine 4 by a strong acceleration during an increase in the Power delivered Pu to the engine 4.

Les courbes en trait pointillƩ et mixte des figures 2A et 2B illustrent la puissance dƩlivrƩe Pu au moteur 4 dudit au moins un ventilateur 3 lors de l'entraƮnement dudit moteur 4 Ơ une vitesse de rotation fixe pour quatre valeurs de puissance diffƩrentes. La courbe de puissance en trait pointillƩ large correspond Ơ la puissance dƩlivrƩe Pu minimale acceptable par le moteur 4 dudit au moins un ventilateur 3 lors de son entraƮnement Ơ une vitesse de rotation fixe. La courbe de puissance en trait mixte correspond Ơ la puissance dƩlivrƩe Pu maximale acceptable par le moteur 4 dudit au moins un ventilateur 3 lors de son entraƮnement Ơ une vitesse de rotation fixe.The dashed and mixed lines of Figures 2A and 2B illustrate the power Pu delivered to the motor 4 of said at least one fan 3 when driving said motor 4 at a fixed rotational speed for four different power values. The power curve broad dashed line corresponds to the power Pu delivered minimum acceptable by the motor 4 of the at least one fan 3 when driving at a fixed rotational speed. The mixed line power curve corresponds to the maximum power output Pu acceptable by the motor 4 of said at least one fan 3 when driving at a fixed rotational speed.

Bien entendu, le pourcentage de puissance dĆ©livrĆ©e au moteur dudit au moins un ventilateur illustrĆ© sur les courbes des figures 2A et 2B n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the percentage of power delivered to the motor of said at least one fan illustrated on the curves of the Figures 2A and 2B is in no way limiting and may be different.

Dans un premier mode de rƩalisation tel qu'illustrƩ Ơ la figure 2A, les rampes d'accƩlƩration A et les rampes de dƩcƩlƩration D du moteur 4 dudit au moins un ventilateur 3 sont rƩalisƩes suivant des segments de droites.In a first embodiment as illustrated in FIG. Figure 2A the acceleration ramps A and the deceleration ramps D of the engine 4 of said at least one fan 3 are produced along line segments.

Dans un deuxiĆØme mode de rĆ©alisation tel qu'illustrĆ© Ć  la figure 2B, les rampes d'accĆ©lĆ©ration A et les rampes de dĆ©cĆ©lĆ©ration D du moteur 4 dudit au moins un ventilateur 3 sont rĆ©alisĆ©es suivant des courbes lissĆ©es, notamment du type polynomiale.In a second embodiment as illustrated in FIG. Figure 2B the acceleration ramps A and the deceleration ramps D of the engine 4 of said at least one fan 3 are produced according to smooth curves, in particular of the polynomial type.

Ainsi, avec une commande du moteur 4 suivant au moins des rampes d'accƩlƩration A et des rampes de dƩcƩlƩration D dudit moteur 4 lissant les pentes desdites rampes, le comportement de la turbine 5 dudit au moins un ventilateur 3 est mieux respectƩ de sorte Ơ rƩduire les vibrations de la hotte d'aspiration 1 et le bruit gƩnƩrƩ par ledit au moins un ventilateur 3.Thus, with a control of the motor 4 according to at least acceleration ramps A and deceleration ramps D of said motor 4 smoothing the slopes of said ramps, the behavior of the turbine 5 of said at least one fan 3 is better respected so as to reduce the vibrations of the suction hood 1 and the noise generated by said at least one fan 3.

La hotte d'aspiration 1 comportant au moins un ventilateur 3 est adaptƩe Ơ mettre en fonctionnement le moteur 4 dudit au moins un ventilateur 3 de sorte Ơ obtenir un dƩbit d'air rƩduit par la modulation de la commande dudit moteur 4 au moyen d'une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4, et Ơ obtenir un dƩbit d'air en fonctionnement supƩrieur au dƩbit d'air rƩduit par le maintien dudit moteur 4 Ơ une vitesse de rotation fixe.The suction hood 1 comprising at least one fan 3 is adapted to operate the motor 4 of said at least one fan 3 so as to obtain a reduced air flow by modulating the control of said motor 4 by means of a succession of at least ramps of acceleration A and deceleration D of said motor 4, and to obtain an air flow in operation greater than the reduced air flow by maintaining said motor 4 at a fixed rotational speed.

PrƩfƩrentiellement, lors du dƩmarrage du moteur 4 dudit au moins un ventilateur 3, les moyens de commande 7, 12 en fonctionnement dudit au moins un ventilateur 3 commandent ledit moteur 4 Ơ une puissance maximale pendant une durƩe prƩdƩterminƩe.Preferably, when starting the motor 4 of said at least one fan 3, the control means 7, 12 in operation of said at least one fan 3 control said motor 4 at a maximum power for a predetermined duration.

Ainsi, au dƩmarrage du moteur 4 dudit au moins un ventilateur 3, le triac 13 de commande dudit moteur 4 conduit en permanence de sorte Ơ fournir une puissance maximale audit moteur 4.Thus, at the start of the motor 4 of said at least one fan 3, the control triac 13 of said motor 4 is permanently driven so as to provide a maximum power to said motor 4.

De cette maniĆØre, l'entraĆ®nement en rotation de la turbine 5 dudit au moins un ventilateur 3 est garanti dans toutes les conditions de fonctionnement, notamment lorsque le moteur 4 est froid, la tension secteur UA est faible, ou le moteur 4 est encrassĆ©.In this way, the rotational drive of the turbine 5 of said at least one fan 3 is guaranteed under all operating conditions, in particular when the engine 4 is cold, the mains voltage U A is low, or the motor 4 is dirty. .

La durĆ©e prĆ©dĆ©terminĆ©e de commande du moteur 4 dudit au moins un ventilateur 3 Ć  une puissance maximale, lors du dĆ©marrage dudit moteur 4, peut ĆŖtre par exemple de l'ordre de 2 secondes.The predetermined duration of the motor 4 of said at least one fan 3 to a maximum power, when starting said motor 4, may for example be of the order of 2 seconds.

Bien entendu, la valeur de la durĆ©e prĆ©dĆ©terminĆ©e de commande du moteur dudit au moins un ventilateur Ć  une puissance maximale, lors du dĆ©marrage dudit moteur, n'est nullement limitative et peut ĆŖtre diffĆ©rente.Of course, the value of the predetermined duration of motor control of said at least one fan at maximum power, when starting said motor, is in no way limiting and may be different.

Puis, les moyens de commande 7, 12 rƩgulent un flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ une valeur de dƩbit d'air au moyen d'une commande du moteur 4 suivant une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4.Then, the control means 7, 12 regulate a flow of air sucked by said at least one fan 3 to a value of air flow by means of a control of the engine 4 in a succession of at least of the acceleration ramps A and deceleration D of said engine 4.

Avantageusement, les moyens de commande 7, 12 rƩgulent le flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2.Advantageously, the control means 7, 12 regulate the flow of air sucked by said at least one fan 3 to the air flow value outside the cooking periods implemented by a hob 2.

Ainsi, l'air contenu dans un local telle qu'une cuisine est aspirĆ© de maniĆØre Ć  extraire des fumĆ©es de cuisson ou des odeurs en dehors des pĆ©riodes de cuisson mises en oeuvre par une table de cuisson 2, ainsi que de renouveler l'air dans un tel local, notamment pour Ć©vacuer et/ou traiter des odeurs de fumĆ©e de cigarettes.Thus, the air contained in a room such as a kitchen is sucked so as to extract cooking fumes or odors outside the cooking periods implemented by a hob 2, as well as to renew the air in such a room, especially for evacuating and / or treating smells of cigarette smoke.

La hotte d'aspiration 1 permet de remplacer ou de complƩter un dispositif de ventilation mƩcanique contrƓlƩe classique mis en place dans les habitations, et en particulier dans les cuisines.The suction hood 1 makes it possible to replace or supplement a conventional controlled mechanical ventilation device installed in the dwellings, and especially in kitchens.

Une telle hotte d'aspiration 1 permet au moyen d'une commande du moteur 4 dudit au moins un ventilateur 3 d'entraƮner la turbine 5 de celui-ci Ơ une vitesse de rotation faible de sorte Ơ minimiser la consommation d'Ʃnergie Ʃlectrique et Ơ limiter le niveau de nuisances sonores dans ce mode de fonctionnement en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2, tout en garantissant un fonctionnement sans endommagement du moteur 4 dudit au moins un ventilateur 3 et l'efficacitƩ d'aspiration des fumƩes de cuisson.Such a suction hood 1 allows by means of a control of the motor 4 of said at least one fan 3 to drive the turbine 5 thereof at a low rotational speed so as to minimize the consumption of electrical energy and to limit the level of noise in this mode of operation outside the cooking periods implemented by a hob 2, while ensuring operation without damage to the motor 4 of the at least one fan 3 and the efficiency of suction of cooking fumes.

PrƩfƩrentiellement, la valeur de dƩbit d'air rƩduit dudit au moins un ventilateur 3 en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2 est infƩrieure Ơ une valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur 3 au cours des pƩriodes de cuisson mises en oeuvre par la table de cuisson 2.Preferably, the reduced air flow rate value of said at least one fan 3 outside the cooking periods implemented by a hob 2 is less than an operating air flow value of said at least one fan 3 to during the cooking periods implemented by the hob 2.

Au cours de la rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air, les moyens de commande 7, 12 du moteur 4 commandent une phase d'entraƮnement en rotation en roue libre P dudit moteur 4 suite Ơ une rampe de dƩcƩlƩration D de la commande dudit moteur 4, tel qu'illustrƩ aux figures 2A et 2B.During the regulation of the air flow sucked by said at least one fan 3 to the air flow value, the control means 7, 12 of the motor 4 control a freewheeling rotation phase P of said motor 4 following a deceleration ramp D of the control of said motor 4, as illustrated in FIGS. Figures 2A and 2B .

Ces phases d'entraĆ®nement en rotation en roue libre P du moteur 4 dudit au moins un ventilateur 3 entre une rampe de dĆ©cĆ©lĆ©ration D et une rampe d'accĆ©lĆ©ration A peuvent ĆŖtre de durĆ©e rĆ©duite, voire supprimĆ©e, ou encore allongĆ©e tant que l'inertie de la turbine 5 dudit au moins un ventilateur 3 est suffisante pour garantir le dĆ©bit d'air rĆ©duit et Ć©viter des variations d'aspiration engendrant des nuisances sonores.These phases of freewheeling rotation P of the motor 4 of said at least one fan 3 between a deceleration ramp D and an acceleration ramp A may be of reduced duration, or even eliminated, or else lengthened as long as the inertia the turbine 5 of said at least one fan 3 is sufficient to ensure reduced air flow and avoid suction variations causing noise.

PrĆ©fĆ©rentiellement, les moyens de commande 7, 12 du moteur 4 alimentent en Ć©nergie Ć©lectrique ledit moteur 4 de maniĆØre discontinue.Preferably, the control means 7, 12 of the motor 4 supply electrical energy to said motor 4 in a discontinuous manner.

La modulation de la commande du moteur 4 dudit au moins un ventilateur 3 de la hotte d'aspiration 1 exploite l'inertie de la turbine 5 dudit au moins un ventilateur 3 de sorte Ơ permettre une alimentation discontinue dudit moteur 4 sans pour autant en stopper l'entraƮnement en rotation.The modulation of the motor control 4 of said at least one fan 3 of the suction hood 1 exploits the inertia of the turbine 5 of said at least one fan 3 so as to allow a discontinuous supply of said motor 4 without stopping rotation training.

Les rampes d'accƩlƩration A et de dƩcƩlƩration D de la commande du moteur 4 dudit au moins un ventilateur 3 sont associƩes Ơ l'alimentation en Ʃnergie Ʃlectrique discontinue dudit moteur 4 de sorte Ơ limiter les Ơ-coups lors de l'entraƮnement en rotation dudit moteur 4, et Ơ limiter les ruptures brutales d'Ʃlan donnƩ Ơ la turbine 5 dudit au moins un ventilateur 3, qui sont gƩnƩrateurs de bruit et de vibrations.The acceleration ramps A and deceleration D of the motor control 4 of said at least one fan 3 are associated with the discontinuous electric power supply of said motor 4 so as to limit the jolts during the rotational drive. said motor 4, and to limit sudden momentum breaks given to the turbine 5 of said at least one fan 3, which are noise and vibration generators.

De cette maniĆØre, le flux d'air aspirĆ© par ledit au moins un ventilateur 3 est rĆ©gulier tout en garantissant une consommation en Ć©nergie Ć©lectrique minimale et une rĆ©duction des nuisances sonores.In this way, the air flow sucked by said at least one fan 3 is regular while ensuring a minimum power consumption and a reduction of noise.

En rƩfƩrence aux figures 4 Ơ 6, on va dƩcrire le fonctionnement du dispositif de commande 6 d'une hotte d'aspiration conforme Ơ l'invention.With reference to Figures 4 to 6 the operation of the control device 6 of a suction hood according to the invention will be described.

Aux figures 4 Ơ 6, la tension secteur UA, le signal de synchronisation UB, le signal de commande UC du triac 13 et la tension UD aux bornes du moteur 4 sont illustrƩs.To the Figures 4 to 6 , the mains voltage U A , the synchronization signal U B , the control signal U C of the triac 13 and the voltage U D at the terminals of the motor 4 are illustrated.

Lorsque la vitesse de rotation du moteur 4 dudit au moins un ventilateur 3 est fixe tel que sur les hottes d'aspiration connues, l'instant d'amorƧage du triac 13 dudit moteur 4 Ơ chaque alternance de la tension secteur UA, c'est-Ơ-dire toutes les 10ms pour une tension secteur UA ayant une frƩquence de 50Hz, ne varie pas. Par consƩquent, le signal de la tension DD aux bornes du moteur 4 serait identique pour chaque pƩriode de la tension secteur UA et se rƩpƩterait pour chaque alternance soit positive soit nƩgative, c'est-Ơ-dire toutes les 20ms.When the speed of rotation of the motor 4 of said at least one fan 3 is fixed such as on the known suction hoods, the moment of priming of the triac 13 of said motor 4 at each alternation of the mains voltage U A , c ' ie every 10ms for a mains voltage U A having a frequency of 50Hz, does not vary. Consequently, the signal of the voltage D D at the terminals of the motor 4 would be identical for each period of the mains voltage U A and would be repeated for each alternation either positive or negative, ie every 20 ms.

Or, nous pouvons noter, Ơ partir de la figure 4, que plus l'instant du signal de commande UC du triac 13 est tƓt au cours d'une alternance de la tension secteur UD, plus la durƩe de conduction du triac 13 est longue, et par consƩquent la puissance dƩlivrƩe au moteur 4 est importante. Cette augmentation de puissance dƩlivrƩe au moteur 4 dudit au moins un ventilateur 3 est ainsi obtenue lors d'une rampe d'accƩlƩration A dudit moteur 4.Now, we can note, from the figure 4 , that the earlier the moment of the control signal U C of the triac 13 is early during an alternation of the mains voltage U D , the longer the conduction time of the triac 13 is long, and consequently the power delivered to the motor 4 is important. This increase in power delivered to the engine 4 of the at least one fan 3 is thus obtained during an acceleration ramp A of said engine 4.

En rĆ©fĆ©rence Ć  la figure 5, avec la modulation de la commande du moteur 4 dudit au moins un ventilateur 3, nous pouvons noter plusieurs pentes de puissance dĆ©livrĆ©e Pu audit moteur 4 correspondant Ć  une premiĆØre rampe d'accĆ©lĆ©ration A du moteur 4 entre les instants t=0ms et t=200ms, une deuxiĆØme rampe d'accĆ©lĆ©ration A du moteur 4 entre les instants t=200ms et t=400ms, et une rampe de dĆ©cĆ©lĆ©ration D du moteur 4 entre les instants t=400ms et t=620ms.With reference to the figure 5 , with the modulation of the control of the motor 4 of said at least one fan 3, we can note several power slopes delivered Pu to said motor 4 corresponding to a first acceleration ramp A of the motor 4 between the instants t = 0ms and t = 200ms, a second acceleration ramp A of the motor 4 between times t = 200ms and t = 400ms, and a deceleration ramp D of the motor 4 between times t = 400ms and t = 620ms.

En rƩfƩrence Ơ la figure 6, nous pouvons noter que le moteur 4 dudit au moins un ventilateur 3 est commandƩ suivant une phase d'entraƮnement en rotation en roue libre P entre les instants t=620ms et t=1000ms.With reference to the figure 6 , we can note that the motor 4 of said at least one fan 3 is controlled according to a freewheeling phase P between the instants t = 620ms and t = 1000ms.

Puis l'enchaƮnement des phases de la modulation de la commande du moteur 4 dudit au moins un ventilateur 3 sont rƩpƩtƩes, dans cet exemple sur une pƩriode de 1000ms.Then the sequence of the phases of the modulation of the motor control 4 of said at least one fan 3 are repeated, in this example over a period of 1000ms.

La courbe de la figure 6 illustrant la tension UD aux bornes du moteur 4 dudit au moins un ventilateur 3 peut ĆŖtre rapprochĆ©e de celle de la courbe des figures 2A et 2B en trait continu illustrant la puissance dĆ©livrĆ©e Pu audit moteur 4 lors de la modulation de la commande de ce moteur 4.The curve of the figure 6 illustrating the voltage U D at the terminals of the motor 4 of said at least one fan 3 can be approximated to that of the curve of the Figures 2A and 2B continuous line illustrating the power Pu delivered to said engine 4 during the modulation of the control of this engine 4.

Bien entendu, les phases de modulation de la commande du moteur dudit au moins un ventilateur illustrĆ©es aux figures 2 Ć  6 ne sont nullement limitatives et peuvent ĆŖtre diffĆ©rentes.Of course, the modulation phases of the motor control of the at least one fan illustrated in FIGS. Figures 2 to 6 are in no way limiting and may be different.

PrƩfƩrentiellement, la commande du moteur 4 dudit au moins un ventilateur 3 comporte un retard Ơ l'amorƧage du triac 13 identique pendant une alternance positive et une alternance nƩgative d'au moins une pƩriode secteur de la tension secteur UA.Preferably, the control of the motor 4 of said at least one fan 3 comprises a triac initiation delay 13 identical during a positive half cycle and a negative half cycle of at least one mains period of the mains voltage U A.

Ainsi, les phases de modulation de la commande du moteur 4 dudit au moins un ventilateur 3 sont symƩtriques pendant au moins une pƩriode secteur de la tension secteur UA.Thus, the modulation phases of the motor control 4 of said at least one fan 3 are symmetrical for at least a period mains of the mains voltage U A.

La commande du moteur 4 suivant au moins des rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D dudit moteur 4 comporte un retard Ć  l'amorƧage du triac 13 identique pendant une alternance positive et une alternance nĆ©gative d'au moins une pĆ©riode secteur de la tension secteur UA, c'est-Ć -dire pour une pĆ©riode secteur de 20ms lorsque la tension secteur UA a une frĆ©quence de 50Hz, puis le retard Ć  l'amorƧage du triac 13 peut ĆŖtre modifiĆ© pour une alternance positive et une alternance nĆ©gative d'une pĆ©riode secteur suivante de la tension secteur UA.The control of the motor 4 following at least ramps of acceleration A and deceleration D of said motor 4 comprises a delay in priming the triac 13 identical during a positive half cycle and a negative half cycle of at least one mains period of the voltage U A sector, that is for a mains period of 20 ms when the mains voltage U A has a frequency of 50 Hz, then the triac 13 start delay can be modified for a positive half cycle and a negative half cycle. of a following sector period of the mains voltage U A.

De cette maniĆØre, cette commande du moteur 4 permet d'Ć©viter toute dissymĆ©trie du courant absorbĆ© par le moteur 4 provoquant des perturbations sur la tension secteur UA. De telles perturbations sur la tension secteur UA interviendraient dans le cas oĆ¹ un retard Ć  l'amorƧage du triac 13 serait diffĆ©rent pendant une alternance positive et une alternance nĆ©gative d'au moins une pĆ©riode secteur de la tension secteur UA In this way, this control of the motor 4 makes it possible to avoid any dissymmetry of the current absorbed by the motor 4 causing disturbances on the mains voltage U A. Such disturbances on the mains voltage U A would occur in the case where a triac 13 initiation delay would be different during a positive half cycle and a negative half cycle of at least one mains voltage period U A.

Dans un mode de rƩalisation, la commande du moteur 4 par les moyens de commande 7, 12 est dƩclenchƩe manuellement par un moyen de sƩlection 9 d'un panneau de commande 8.In one embodiment, the control of the motor 4 by the control means 7, 12 is triggered manually by a selection means 9 of a control panel 8.

Le moyen de sĆ©lection 9 de la commande du moteur 4, permettant de mettre en oeuvre la modulation de la commande de celui-ci au moyen d'une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D, peut ĆŖtre par exemple un bouton, une touche sensitive, ou une touche optique.The selection means 9 of the control of the motor 4, making it possible to implement the modulation of the control of the latter by means of a succession of at least acceleration ramps A and deceleration D, can be for example a button, a touch pad, or an optical key.

Bien entendu, le type de moyen de sĆ©lection n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of selection means is in no way limiting and may be different.

Dans un autre mode de rƩalisation, la commande du moteur 4 par les moyens de commande 7, 12 est dƩclenchƩe automatiquement par un capteur 14 en communication avec lesdits moyens de commande 7, 12.In another embodiment, the control of the motor 4 by the control means 7, 12 is triggered automatically by a sensor 14 in communication with said control means 7, 12.

Le capteur 14 de la commande du moteur 4, permettant de mettre en oeuvre la modulation de la commande de celui-ci au moyen d'une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D, peut ĆŖtre par exemple un capteur de tempĆ©rature de la hotte d'aspiration 1 dĆ©tectant une valeur seuil de tempĆ©rature prĆ©dĆ©terminĆ©e, et/ou un capteur d'humiditĆ© de la hotte d'aspiration 1 dĆ©tectant une valeur seuil d'humiditĆ© prĆ©dĆ©terminĆ©e, et/ou un capteur infrarouge de la hotte d'aspiration 1 communicant avec un Ć©metteur disposĆ© au niveau de la table de cuisson 2.The sensor 14 of the motor control 4, for implementing modulation of the control thereof by means of a succession of at least acceleration ramps A and deceleration D, can be for example a sensor of temperature of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined threshold moisture value, and / or an infrared sensor of the hood of suction 1 communicating with a transmitter disposed at the level of the hob 2.

Bien entendu, le type de capteur n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of sensor is not limiting and may be different.

Dans un autre mode de rƩalisation, la commande du moteur 4 par les moyens de commande 7, 12 est dƩclenchƩe Ơ distance par un dispositif de communication (non reprƩsentƩ), utilisant notamment un rƩseau de communication, ou un dispositif de domotique.In another embodiment, the control of the motor 4 by the control means 7, 12 is triggered remotely by a communication device (not shown), in particular using a communication network, or a communication device. Automation.

On va dƩcrire Ơ prƩsent un procƩdƩ de commande d'une hotte d'aspiration des fumƩes de cuisson conforme Ơ l'invention.We will now describe a control method of a fume hood fume hood according to the invention.

Ici, ce procƩdƩ de commande est mis en oeuvre dans une hotte d'aspiration telle que dƩcrite en rƩfƩrence aux figures 1 Ơ 6.Here, this control method is implemented in a fume hood as described with reference to Figures 1 to 6 .

Ce procƩdƩ comporte au moins une Ʃtape de rƩgulation d'un flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ une valeur de dƩbit d'air au moyen d'une commande du moteur 4 suivant une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4.This method comprises at least one step of regulating a flow of air sucked by said at least one fan 3 to a value of air flow by means of a control of the motor 4 in a succession of at least two ramps. acceleration A and deceleration D of said engine 4.

Cette valeur de dĆ©bit d'air, dit rĆ©duit, dudit au moins un ventilateur 3 peut ĆŖtre infĆ©rieure Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur 3 engendrĆ©e par une vitesse de rotation minimale fixe du moteur 4 dudit au moins un ventilateur 3.This air flow rate, said reduced, of said at least one fan 3 may be less than an operating air flow value of said at least one fan 3 generated by a fixed minimum rotational speed of the engine 4 of said at least a fan 3.

Le flux d'air aspirƩ par ledit au moins un ventilateur 3 est rƩgulƩ Ơ une valeur de dƩbit d'air au moyen d'une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D de la commande du moteur 4 dudit au moins un ventilateur 3.The flow of air sucked by said at least one fan 3 is regulated to an air flow value by means of a succession of at least acceleration ramps A and deceleration D of the engine control 4 of said at least a fan 3.

Cette rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 permet de rƩduire la vitesse de rotation du moteur 4 dudit au moins un ventilateur 3 de la hotte d'aspiration 1 au moyen d'une succession au moins de rampes d'accƩlƩration A et de dƩcƩlƩration D dudit moteur 4 de sorte Ơ utiliser l'inertie de la turbine 5 dudit au moins un ventilateur 3 et Ơ obtenir une aspiration des fumƩes de cuisson Ơ un dƩbit d'air rƩduit, rƩgulier et limitant les nuisances sonores.This regulation of the air flow sucked by said at least one fan 3 makes it possible to reduce the rotational speed of the motor 4 of said at least one fan 3 of the extractor hood 1 by means of a succession of at least two ramps. A acceleration and deceleration D of said engine 4 so as to use the inertia of the turbine 5 of said at least one fan 3 and to obtain a suction of cooking fumes at a reduced air flow, regular and limiting noise.

PrƩfƩrentiellement, l'Ʃtape de rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air est mise en oeuvre en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2.Preferably, the step of regulating the flow of air sucked by said at least one fan 3 to the airflow value is implemented outside the cooking periods implemented by a hob 2.

La rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air en dehors des pƩriodes de cuisson mises en oeuvre par la table de cuisson 2 permet de limiter les nuisances sonores et d'aspirer en continu l'air contenu dans un local, telle qu'une cuisine, de sorte Ơ Ʃvacuer cet air et/ou Ơ le traiter.The regulation of the air flow sucked by said at least one fan 3 to the air flow value outside the cooking periods implemented by the hob 2 makes it possible to limit the noise nuisance and to suck in continuously the air contained in a room, such as a kitchen, so as to evacuate this air and / or to treat it.

La valeur de dƩbit d'air dudit au moins un ventilateur 3 en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2 est infƩrieure Ơ une valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur 3 au cours des pƩriodes de cuisson mises en oeuvre par ladite table de cuisson 2.The airflow value of said at least one fan 3 outside the cooking periods implemented by a hob 2 is less than an operating airflow value of said at least one fan 3 during the periods cooking used by said hob 2.

Ainsi, le dĆ©bit d'air engendrĆ© par ledit au moins un ventilateur 3 en dehors des pĆ©riodes de cuisson mises en oeuvre par la table de cuisson 2 est adaptĆ© Ć  mettre en circulation l'air dans le local oĆ¹ est disposĆ©e la hotte d'aspiration 1, en particulier dans une cuisine, en limitant les nuisances sonores puisque le dĆ©bit d'air est adaptĆ© pour Ć©vacuer et/ou traiter les odeurs de ce local et le dĆ©bit d'air est rĆ©duit par rapport au fonctionnement classique de la hotte d'aspiration 1 utilisant une vitesse de rotation fixe du moteur 4 dudit au moins un ventilateur 3 pendant les pĆ©riodes de cuisson mises en oeuvre par la table de cuisson 2.Thus, the air flow generated by the at least one fan 3 outside the cooking periods implemented by the hob 2 is adapted to circulate the air in the room where the suction hood is arranged. 1, in particular in a kitchen, by limiting noise pollution since the air flow is adapted to evacuate and / or treat the odors of this room and the air flow is reduced compared to the conventional operation of the hood 1 using a fixed rotational speed of the motor 4 of said at least one fan 3 during the cooking periods set implemented by the hob 2.

Dans un mode de rƩalisation, l'Ʃtape de rƩgulation d'un flux d'air aspirƩ est dƩclenchƩe suite Ơ une Ʃtape de sƩlection manuelle du mode de fonctionnement dudit au moins un ventilateur 3 de la hotte d'aspiration 1 Ơ une valeur de dƩbit d'air.In one embodiment, the step of regulating an intake airflow is triggered following a step of manually selecting the operating mode of said at least one fan 3 of the extractor hood 1 at a flow rate value. air.

La sĆ©lection manuelle du mode de fonctionnement dudit au moins un ventilateur 3 de la hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air, mettant en oeuvre la modulation de la commande du moteur dudit au moins un ventilateur 3 au moyen d'une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D, peut ĆŖtre rĆ©alisĆ©e par exemple par un bouton, une touche sensitive, ou une touche optique.The manual selection of the operating mode of said at least one fan 3 of the suction hood 1 to a value of air flow, implementing the modulation of the motor control of said at least one fan 3 by means of a succession of at least ramps of acceleration A and deceleration D, can be achieved for example by a button, a touch pad, or an optical key.

Bien entendu, le type de moyen de sĆ©lection n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of selection means is in no way limiting and may be different.

Dans un autre mode de rĆ©alisation, l'Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© est dĆ©clenchĆ©e suite Ć  une Ć©tape de mise en fonctionnement automatique de la hotte d'aspiration 1 lorsque la table de cuisson 2 est dĆ©terminĆ©e Ć  l'arrĆŖt.In another embodiment, the step of regulating an intake airflow is triggered following an automatic operation step of the extractor hood 1 when the hob 2 is determined at a standstill. .

Le dĆ©clenchement automatique du mode de fonctionnement dudit au moins un ventilateur 3 de la hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air, mettant en oeuvre la modulation de la commande du moteur 4 dudit au moins un ventilateur 3 au moyen d'une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D, peut ĆŖtre rĆ©alisĆ©e par exemple par un capteur de tempĆ©rature de la hotte d'aspiration 1 dĆ©tectant une valeur seuil de tempĆ©rature prĆ©dĆ©terminĆ©e, et/ou un capteur d'humiditĆ© de la hotte d'aspiration 1 dĆ©tectant une valeur seuil d'humiditĆ© prĆ©dĆ©terminĆ©e, et/ou un capteur infrarouge de la hotte d'aspiration 1 communicant avec un Ć©metteur disposĆ© au niveau de la table de cuisson 2.The automatic activation of the operating mode of said at least one fan 3 of the suction hood 1 to an air flow value, implementing the modulation of the motor control 4 of said at least one fan 3 by means of a succession of at least acceleration ramps A and deceleration D, can be carried out for example by a temperature sensor of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined humidity threshold value, and / or an infrared sensor of the extractor hood 1 communicating with a transmitter disposed at the level of the hob 2.

Bien entendu, le type de capteur n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of sensor is not limiting and may be different.

Dans un mode de rĆ©alisation, le procĆ©dĆ© de commande d'une hotte d'aspiration 1 comporte une Ć©tape d'arrĆŖt de l'Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© suite Ć  une Ć©tape de sĆ©lection manuelle d'arrĆŖt dudit au moins un ventilateur 3 de ladite hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air ou suite Ć  la mise en fonctionnement dudit au moins un ventilateur 3 de ladite hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur 3 engendrĆ©e par une vitesse de rotation fixe du moteur 4 dudit au moins un ventilateur 3.In one embodiment, the control method of a fume hood 1 comprises a step of stopping the step of regulating a flow of air sucked following a manual shutdown step of said shutdown. minus a fan 3 of said extractor hood 1 to an air flow rate value or following operation of said at least one fan 3 of said extractor hood 1 to an operating air flow rate value of said at least one fan 3 generated by a fixed rotational speed of the motor 4 of said at least one fan 3.

La sĆ©lection manuelle de l'arrĆŖt dudit au moins un ventilateur 3 de la hotte d'aspiration 1, ou du mode de fonctionnement dudit au moins un ventilateur 3 de la hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur 3 engendrĆ©e par une vitesse de rotation fixe du moteur 4 dudit au moins un ventilateur 3, peut ĆŖtre rĆ©alisĆ©e par exemple par un bouton, une touche sensitive, ou une touche optique.The manual selection of the shutdown of said at least one fan 3 of the hood 1, or the operating mode of said at least one fan 3 of the hood 1 at an operating air flow rate of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3, can be achieved for example by a button, a touch pad, or an optical key.

Bien entendu, le type de moyen de sĆ©lection n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of selection means is in no way limiting and may be different.

Dans un autre mode de rĆ©alisation, le procĆ©dĆ© de commande d'une hotte d'aspiration 1 comporte une Ć©tape d'arrĆŖt automatique de l'Ć©tape de rĆ©gulation du flux d'air aspirĆ© suite Ć  une Ć©tape de dĆ©termination de la mise en fonctionnement de la table de cuisson 2.In another embodiment, the control method of a suction hood 1 comprises a step of automatically stopping the step of regulating the flow of air sucked following a step of determining the operation of the the hob 2.

L'arrĆŖt automatique du mode de fonctionnement dudit au moins un ventilateur 3 de la hotte d'aspiration 1 Ć  une valeur de dĆ©bit d'air, mettant en oeuvre la modulation de la commande du moteur 4 dudit au moins un ventilateur 3 au moyen d'une succession au moins de rampes d'accĆ©lĆ©ration A et de dĆ©cĆ©lĆ©ration D, peut ĆŖtre rĆ©alisĆ©e par exemple par un capteur de tempĆ©rature de la hotte d'aspiration 1 dĆ©tectant une valeur seuil de tempĆ©rature prĆ©dĆ©terminĆ©e, et/ou un capteur d'humiditĆ© de la hotte d'aspiration 1 dĆ©tectant une valeur seuil d'humiditĆ© prĆ©dĆ©terminĆ©e, et/ou un capteur infrarouge de la hotte d'aspiration 1 communicant avec un Ć©metteur disposĆ© au niveau de la table de cuisson 2.Automatic shutdown of the operating mode of said at least one fan 3 of the extractor hood 1 to a value of air flow, implementing the modulation of the motor control 4 of said at least one fan 3 by means of a succession of at least acceleration ramps A and deceleration D, for example, can be performed by a temperature sensor of the suction hood 1 detecting a predetermined temperature threshold value, and / or a humidity sensor of the suction hood 1 detecting a predetermined threshold humidity value, and / or an infrared sensor of the extractor hood 1 communicating with a transmitter disposed at the level of the hob 2.

Bien entendu, le type de capteur n'est nullement limitatif et peut ĆŖtre diffĆ©rent.Of course, the type of sensor is not limiting and may be different.

Dans un autre mode de rƩalisation, l'Ʃtape de rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air est mise en oeuvre lorsque la hotte d'aspiration 1 est dans un Ʃtat de veille.In another embodiment, the step of regulating the flow of air sucked by said at least one fan 3 to the airflow value is implemented when the suction hood 1 is in a standby state. .

Puis, suite Ơ une Ʃtape de sƩlection manuelle ou Ơ une Ʃtape de mise en fonctionnement automatique, ledit au moins un ventilateur 3 de la hotte d'aspiration 1 est mis en fonctionnement Ơ une valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur 3 engendrƩe par une vitesse de rotation fixe du moteur 4 dudit au moins un ventilateur 3.Then, following a manual selection step or an automatic operation step, said at least one fan 3 of the suction hood 1 is operated at an operating air flow value of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3.

Dans un autre mode de rƩalisation, l'Ʃtape de rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air est mise en oeuvre pendant une durƩe prƩdƩterminƩe.In another embodiment, the step of regulating the flow of air sucked by said at least one fan 3 to the air flow value is carried out for a predetermined duration.

Ainsi, la hotte d'aspiration 1 est mise en fonctionnement en rƩgulant le flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air pendant la durƩe prƩdƩterminƩe.Thus, the suction hood 1 is put into operation by regulating the flow of air sucked by said at least one fan 3 to the air flow value for the predetermined duration.

La durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre par exemple de l'ordre de 1 heure.The predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value may be for example of the order of 1 hour.

Bien entendu, la valeur de la durƩe prƩdƩterminƩe de fonctionnement de la hotte d'aspiration en rƩgulant le flux d'air aspirƩ par ledit au moins un ventilateur Ơ la valeur de dƩbit d'air n'est nullement limitative.Of course, the value of the predetermined duration of operation of the hood suction by regulating the flow of air sucked by said at least one fan to the air flow value is not limiting.

La durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre sĆ©lectionnĆ©e manuellement ou mĆ©morisĆ©e par les moyens de commande 7, 12.The predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be selected manually or stored by the control means 7, 12.

La sĆ©lection manuelle de la durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre rĆ©alisĆ©e par un moyen de sĆ©lection 9 du panneau de commande 8, tel que par exemple une touche dĆ©diĆ©e. Ce moyen de sĆ©lection 9 peut Ć©galement permettre de dĆ©clencher et d'arrĆŖter le fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.The manual selection of the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value can be carried out by means of selection 9 of the panel 8, such as for example a dedicated key. This selection means 9 can also make it possible to trigger and stop the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value.

La durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre affichĆ©e par un moyen d'affichage 10 du panneau de commande 8, tel que par exemple par un afficheur Ć  sept segments.The predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be displayed by a display means 10 of the control panel 8 , such as for example by a display with seven segments.

La durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre ajustĆ©e en incrĆ©mentant ou en dĆ©crĆ©mentant la valeur de ladite durĆ©e prĆ©dĆ©terminĆ©e manuellement par au moins un moyen de sĆ©lection 9 du panneau de commande 8. Ledit au moins moyen de sĆ©lection 9 peut par exemple comporter une touche permettant d'incrĆ©menter la durĆ©e prĆ©dĆ©terminĆ©e et une touche permettant de dĆ©crĆ©menter la durĆ©e prĆ©dĆ©terminĆ©e. L'ajustement de la durĆ©e prĆ©dĆ©terminĆ©e peut ĆŖtre activĆ©e par un appui long sur le moyen de sĆ©lection 9 permettant de dĆ©clencher et d'arrĆŖter le fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.The predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value can be adjusted by incrementing or decrementing the value of said predetermined duration manually by at least one selection means 9 of the control panel 8. Said at least one selection means 9 may for example comprise a key for incrementing the predetermined duration and a key for decrementing the predetermined duration. The adjustment of the predetermined time can be activated by a long press on the selection means 9 for triggering and stopping the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the airflow value.

L'ajustement de la durƩe prƩdƩterminƩe de fonctionnement de la hotte d'aspiration 1 en rƩgulant le flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air peut s'Ʃtendre par exemple de 1 heure Ơ 9 heures.The adjustment of the predetermined duration of operation of the extractor hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow rate value can range for example from 1 hour to 9 hours. hours.

Bien entendu, la valeur de l'ajustement de la durƩe prƩdƩterminƩe de fonctionnement de la hotte d'aspiration en rƩgulant le flux d'air aspirƩ par ledit au moins un ventilateur Ơ la valeur de dƩbit d'air n'est nullement limitative.Of course, the value of the adjustment of the predetermined duration of operation of the suction hood by regulating the flow of air sucked by said at least one fan to the air flow value is not limiting.

La valeur de la durĆ©e prĆ©dĆ©terminĆ©e en cours d'ajustement peut ĆŖtre affichĆ©e par un moyen d'affichage 10 du panneau de commande 8, par exemple par clignotement de ladite valeur.The value of the predetermined duration being adjusted can be displayed by a display means 10 of the control panel 8, for example by flashing of said value.

La validation de la durĆ©e prĆ©dĆ©terminĆ©e suite Ć  l'ajustement de cette derniĆØre peut ĆŖtre automatique au bout d'une durĆ©e prĆ©dĆ©finie sans dĆ©tection de l'activation d'au moins un moyen de sĆ©lection 9 permettant cet ajustement, pouvant ĆŖtre par exemple de l'ordre de 10 secondes, ou manuelle par l'activation d'un moyen de sĆ©lection 9 permettant de dĆ©clencher et d'arrĆŖter le fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.The validation of the predetermined duration following the adjustment of the latter may be automatic after a predefined duration without detection of the activation of at least one selection means 9 allowing this adjustment, which may be for example of the order 10 seconds, or manual by the activation of a selection means 9 for starting and stopping the operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value.

L'ajustement de la durĆ©e prĆ©dĆ©terminĆ©e peut Ć©galement ĆŖtre annulĆ© par l'activation d'un moyen de sĆ©lection 9 du panneau de commande 8, tel que par exemple une touche, notamment pendant la durĆ©e prĆ©dĆ©finie de validation de la durĆ©e prĆ©dĆ©terminĆ©e.The adjustment of the predetermined duration can also be canceled by the activation of a selection means 9 of the control panel 8, such as for example a key, in particular during the predefined duration of validation of the predetermined duration.

La hotte d'aspiration 1 s'arrĆŖte automatiquement suite Ć  l'Ć©coulement de la durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de ladite hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.The suction hood 1 stops automatically following the lapse of the predetermined duration of operation of said suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the flow rate value. air.

Par ailleurs, la durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 en rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air peut ĆŖtre modifiĆ©e Ć  tout instant par un des moyens de sĆ©lection 9 du panneau de commande 8. Cette modification de la durĆ©e prĆ©dĆ©terminĆ©e peut intervenir lors de la mise en fonctionnement de la hotte d'aspiration 1 rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.Furthermore, the predetermined duration of operation of the suction hood 1 by regulating the flow of air sucked by said at least one fan 3 to the air flow value can be changed at any time by one of the selection means 9 of the control panel 8. This change in the predetermined time can occur during the startup of the suction hood 1 regulating the flow of air sucked by said at least one fan 3 to the air flow value .

Ici et de maniĆØre nullement limitative, la durĆ©e prĆ©dĆ©terminĆ©e de fonctionnement de la hotte d'aspiration 1 peut ĆŖtre affichĆ©e sur un moyen d'affichage 10 du panneau de commande 8 par un appui sur un des moyens de sĆ©lection 9 du panneau de commande 8 lors de la mise en fonctionnement de la hotte d'aspiration 1 rĆ©gulant le flux d'air aspirĆ© par ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air, puis ladite durĆ©e prĆ©dĆ©terminĆ©e peut ĆŖtre modifiĆ©e par un ou plusieurs appuis sur un des moyens de sĆ©lection 9 du panneau de commande 8 permettant l'ajustement de cette durĆ©e prĆ©dĆ©terminĆ©e, et cette durĆ©e prĆ©dĆ©terminĆ©e peut ĆŖtre validĆ©e soit automatiquement soit manuellement de sorte que le dispositif de commande 6 de la hotte d'aspiration 1 continue Ć  commander ledit au moins un ventilateur 3 Ć  la valeur de dĆ©bit d'air.Here and in no way limiting, the predetermined duration of operation of the hood 1 can be displayed on a display means 10 of the control panel 8 by pressing on one of the selection means 9 of the control panel 8 when the operation of the suction hood 1 regulating the flow of air sucked by said at least one fan 3 to the air flow value, then said predetermined time can be modified by one or more supports on one of the selection means 9 of the control panel 8 allowing the adjustment of this predetermined time, and this predetermined time can be validated either automatically or manually so that the control device 6 of the suction hood 1 continues to control said at least a fan 3 to the airflow value.

Dans un autre mode de rƩalisation, l'Ʃtape de rƩgulation du flux d'air aspirƩ par ledit au moins un ventilateur 3 Ơ la valeur de dƩbit d'air est mise en oeuvre en continue en dehors des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2.In another embodiment, the step of regulating the flow of air sucked by said at least one fan 3 to the air flow value is carried out continuously outside the cooking periods implemented by a cooktop 2.

Puis, ledit au moins un ventilateur 3 de la hotte d'aspiration 1 est mis en fonctionnement Ơ une valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur 3 engendrƩe par une vitesse de rotation fixe du moteur 4 dudit au moins un ventilateur 3 pendant des pƩriodes de cuisson mises en oeuvre par une table de cuisson 2, soit suite Ơ une Ʃtape de sƩlection manuelle soit suite Ơ une Ʃtape de mise en fonctionnement automatique Ơ ladite valeur de dƩbit d'air en fonctionnement dudit au moins un ventilateur 3.Then, said at least one fan 3 of the suction hood 1 is operated at an operating airflow value of said at least one fan 3 generated by a fixed rotation speed of the motor 4 of said at least one fan 3 during cooking periods implemented by a hob 2, either following a manual selection step or following a step of automatic operation at said operating air flow rate of said at least one fan 3 .

GrĆ¢ce Ć  la prĆ©sente invention, la modulation de la commande du moteur dudit au moins un ventilateur de la hotte d'aspiration exploite l'inertie de la turbine dudit au moins un ventilateur de sorte Ć  permettre une alimentation discontinue dudit moteur sans pour autant en stopper l'entraĆ®nement en rotation.Thanks to the present invention, the modulation of the motor control of the said less a fan of the suction hood exploits the inertia of the turbine of the at least one fan so as to allow a discontinuous power supply of said motor without stopping the rotation drive.

Bien entendu, de nombreuses modifications peuvent ĆŖtre apportĆ©es Ć  l'exemple de rĆ©alisation dĆ©crit prĆ©cĆ©demment sans sortir du cadre de l'invention.Of course, many modifications can be made to the embodiment described above without departing from the scope of the invention.

Claims (19)

Hotte d'aspiration des fumĆ©es de cuisson (1) comportant au moins un ventilateur d'aspiration (3) des fumĆ©es de cuisson, des moyens de commande (7, 12) en fonctionnement dudit au moins un ventilateur (3), ledit au moins un ventilateur (3) comportant un moteur (4) et une turbine (5), caractĆ©risĆ©e en ce que : - lesdits moyens de commande (7, 12) rĆ©gulent un flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  une valeur de dĆ©bit d'air au moyen d'une commande dudit moteur (4) suivant une succession au moins de rampes d'accĆ©lĆ©ration (A) et de dĆ©cĆ©lĆ©ration (D) dudit moteur (4). Cooking fume extraction hood (1) comprising at least one suction fan (3) for cooking fumes, operating means (7, 12) for operating said at least one fan (3), said at least one a fan (3) comprising a motor (4) and a turbine (5), characterized in that : said control means (7, 12) regulate a flow of air sucked by said at least one fan (3) to a value of air flow by means of a control of said motor (4) in a succession at least ramps of acceleration (A) and deceleration (D) of said motor (4). Hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 1, caractĆ©risĆ©e en ce que lesdits moyens de commande (7, 12) rĆ©gulent ledit flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  ladite valeur de dĆ©bit d'air en dehors des pĆ©riodes de cuisson mises en oeuvre par une table de cuisson (2).Fume extraction hood (1) according to claim 1, characterized in that said control means (7, 12) regulate said flow of air sucked by said at least one fan (3) to said flow value of air outside the cooking periods implemented by a hob (2). Hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 2, caractĆ©risĆ©e en ce que ladite valeur de dĆ©bit d'air dudit au moins un ventilateur (3) en dehors des pĆ©riodes de cuisson mises en oeuvre par une table de cuisson (2) est infĆ©rieure Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur (3) au cours des pĆ©riodes de cuisson mises en oeuvre par ladite table de cuisson (2).Fume extraction hood (1) according to claim 2, characterized in that said value of air flow of said at least one fan (3) outside the cooking periods implemented by a hob ( 2) is less than an operating air flow value of said at least one fan (3) during the cooking periods implemented by said hob (2). Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  3, caractĆ©risĆ©e en ce qu'au cours de la rĆ©gulation du flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  ladite valeur de dĆ©bit d'air, lesdits moyens de commande (7, 12) dudit moteur (4) commandent une phase d'entraĆ®nement en rotation en roue libre (P) dudit moteur (4) suite Ć  une rampe de dĆ©cĆ©lĆ©ration (D) de la commande dudit moteur (4).Fume extraction hood (1) according to one of claims 1 to 3, characterized in that during the regulation of the air flow sucked by said at least one fan (3) to said value said control means (7, 12) of said motor (4) control a freewheeling rotation phase (P) of said motor (4) following a deceleration ramp (D) of the controlling said motor (4). Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  4, caractĆ©risĆ©e en ce que lesdits moyens de commande (7, 12) dudit moteur (4) alimentent en Ć©nergie Ć©lectrique ledit moteur (4) de maniĆØre discontinue.Fume extraction hood (1) according to any one of claims 1 to 4, characterized in that said control means (7, 12) of said motor (4) supply electrical energy to said motor (4) of discontinuous manner. Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  5, caractĆ©risĆ©e en ce que lesdits moyens de commande (7, 12) dudit moteur (4) utilisent une gradation de la tension secteur (UA) au moyen d'un triac (13) commandĆ© par un microcontrĆ“leur (12).Fume extraction hood (1) according to any one of claims 1 to 5, characterized in that said control means (7, 12) of said motor (4) use a gradation of the mains voltage (U A ) by means of a triac (13) controlled by a microcontroller (12). Hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 6, caractĆ©risĆ©e en ce que ledit triac (13) est amorcĆ© en fonction d'un signal de synchronisation secteur (UB) issu de ladite tension secteur (UA).Fume extraction hood (1) according to claim 6, characterized in that said triac (13) is initiated according to a sector synchronization signal (U B ) from said mains voltage (U A ). Hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 6 ou 7, caractĆ©risĆ©e en ce que la commande dudit moteur (4) dudit au moins un ventilateur (3) comporte un retard Ć  l'amorƧage du triac (13) identique pendant une alternance positive et une alternance nĆ©gative d'au moins une pĆ©riode secteur de la tension secteur (UA).Cooking fume extraction hood (1) according to claim 6 or 7, characterized in that the control of said motor (4) of said at least one fan (3) comprises a triac initiation delay (13) identical during a positive half cycle and a negative half cycle of at least one mains period of the voltage sector (U A ). Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  8, caractĆ©risĆ©e en ce que ladite commande dudit moteur (4) par lesdits moyens de commande (7, 12) est dĆ©clenchĆ©e manuellement par un moyen de sĆ©lection (9) d'un panneau de commande (8).Fume extraction hood (1) according to any one of claims 1 to 8, characterized in that said control of said motor (4) by said control means (7, 12) is triggered manually by means of selecting (9) a control panel (8). Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  8, caractĆ©risĆ©e en ce que ladite commande dudit moteur (4) par lesdits moyens de commande (7, 12) est dĆ©clenchĆ©e automatiquement par un capteur (14) en communication avec lesdits moyens de commande (7, 12).Fume extraction hood (1) according to any one of claims 1 to 8, characterized in that said control of said motor (4) by said control means (7, 12) is triggered automatically by a sensor ( 14) in communication with said control means (7, 12). Hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 1 Ć  10, caractĆ©risĆ©e en ce que lors du dĆ©marrage dudit moteur (4) dudit au moins un ventilateur (3), lesdits moyens de commande (7, 12) en fonctionnement dudit au moins un ventilateur (3) commandent ledit moteur (4) Ć  une puissance maximale pendant une durĆ©e prĆ©dĆ©terminĆ©e.Cooking fume extraction hood (1) according to any one of claims 1 to 10, characterized in that when starting said motor (4) of said at least one fan (3), said control means (7, 12) in operation of said at least one fan (3) controls said motor (4) at a maximum power for a predetermined duration. ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) comportant au moins un ventilateur d'aspiration des fumĆ©es de cuisson (3), des moyens de commande (7, 12) en fonctionnement dudit au moins un ventilateur (3), ledit au moins un ventilateur (3) comportant un moteur (4) et une turbine (5), caractĆ©risĆ© en ce que ledit procĆ©dĆ© comporte au moins une Ć©tape : - rĆ©gulation d'un flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  une valeur de dĆ©bit d'air au moyen d'une commande dudit moteur (4) suivant une succession au moins de rampes d'accĆ©lĆ©ration (A) et de dĆ©cĆ©lĆ©ration (D) dudit moteur (4). A method of controlling a fume extraction hood (1) comprising at least one fume extraction fan (3), operating means (7, 12) for operating said at least one blower ( 3), said at least one fan (3) comprising a motor (4) and a turbine (5), characterized in that said method comprises at least one step: - Regulating a flow of air sucked by said at least one fan (3) to an air flow value by means of a control of said motor (4) in a succession of at least acceleration ramps (A ) and deceleration (D) of said motor (4). ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 12, caractĆ©risĆ© en ce que ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  ladite valeur de dĆ©bit d'air est mise en oeuvre en dehors des pĆ©riodes de cuisson mises en oeuvre par une table de cuisson (2).A method of controlling a fume extraction hood (1) according to claim 12, characterized in that said step of regulating a flow of air sucked by said at least one fan (3) to said value air flow is implemented outside the cooking periods implemented by a hob (2). ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon la revendication 13, caractĆ©risĆ© en ce que ladite valeur de dĆ©bit d'air dudit au moins un ventilateur (3) en dehors des pĆ©riodes de cuisson mises en oeuvre par ladite table de cuisson (2) est infĆ©rieure Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur (3) au cours des pĆ©riodes de cuisson mises en oeuvre par ladite table de cuisson (2).A method of controlling a fume extraction hood (1) according to claim 13, characterized in that said value of air flow of said at least one fan (3) outside the cooking periods implemented by said hob (2) is less than an operating air flow value of said at least one fan (3) during cooking periods implemented by said hob (2). ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 12 Ć  14, caractĆ©risĆ© en ce que ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© est dĆ©clenchĆ©e suite Ć  une Ć©tape de sĆ©lection manuelle du mode de fonctionnement dudit au moins un ventilateur (3) de ladite hotte d'aspiration (1) Ć  une valeur de dĆ©bit d'air rĆ©duit.A method of controlling a fume extraction hood (1) according to any one of claims 12 to 14, characterized in that said step of regulating a suction air flow is triggered following a step manually selecting the operating mode of said at least one fan (3) of said suction hood (1) at a reduced air flow rate. ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 12 Ć  14, caractĆ©risĆ© en ce que ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© est dĆ©clenchĆ©e suite Ć  une Ć©tape de mise en fonctionnement automatique de ladite hotte d'aspiration (1) lorsque ladite table de cuisson (2) est dĆ©terminĆ©e Ć  l'arrĆŖt.A method of controlling a fume extraction hood (1) according to any one of claims 12 to 14, characterized in that said step of regulating a suction air flow is triggered following a step automatic operation of said suction hood (1) when said hob (2) is determined at a standstill. ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 12 Ć  16, caractĆ©risĆ© en ce qu'il comporte une Ć©tape d'arrĆŖt de ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© suite Ć  une Ć©tape de sĆ©lection manuelle d'arrĆŖt dudit au moins un ventilateur (3) de ladite hotte d'aspiration (1) Ć  ladite valeur de dĆ©bit d'air ou suite Ć  la mise en fonctionnement dudit au moins un ventilateur (3) de ladite hotte d'aspiration (1) Ć  une valeur de dĆ©bit d'air en fonctionnement dudit au moins un ventilateur (3) engendrĆ©e par une vitesse de rotation fixe dudit moteur (4) dudit au moins un ventilateur (3).A method of controlling a fume extraction hood (1) according to any one of claims 12 to 16, characterized in that it comprises a step of stopping said step of regulating a flow of sucked air following a step of manual selection of stopping said at least one fan (3) of said suction hood (1) at said airflow value or following operation of said at least one fan (3) of said suction hood (1) to an operating airflow value of said at least one fan (3) generated by a fixed rotational speed of said motor (4) of said at least one fan (3) . ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 12 Ć  17, caractĆ©risĆ© en ce qu'il comporte une Ć©tape d'arrĆŖt automatique de ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© suite Ć  une Ć©tape de dĆ©termination de la mise en fonctionnement de ladite table de cuisson (2).A method of controlling a fume extraction hood (1) according to any one of claims 12 to 17, characterized in that it comprises a step of automatically stopping said step of regulating a flow sucked air following a step of determining the operation of said hob (2). ProcĆ©dĆ© de commande d'une hotte d'aspiration des fumĆ©es de cuisson (1) selon l'une quelconque des revendications 12 Ć  18, caractĆ©risĆ© en ce que ladite Ć©tape de rĆ©gulation d'un flux d'air aspirĆ© par ledit au moins un ventilateur (3) Ć  ladite valeur de dĆ©bit d'air est mise en oeuvre pendant une durĆ©e prĆ©dĆ©terminĆ©e.A method of controlling a fume extraction hood (1) according to any one of claims 12 to 18, characterized in that said step of regulating a flow of air sucked by said at least one fan (3) at said airflow value is implemented for a predetermined time.
EP11000884.4A 2010-02-11 2011-02-04 Extracting hood and method for controlling the same Active EP2360434B1 (en)

Applications Claiming Priority (1)

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FR1000609A FR2956189B1 (en) 2010-02-11 2010-02-11 SUCTION HOOD AND CONTROL METHOD THEREFOR

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EP2360434B1 EP2360434B1 (en) 2016-08-31

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Families Citing this family (1)

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CN107763690A (en) * 2017-09-28 2018-03-06 ē ęµ·ę ¼åŠ›ē”µå™Øč‚”ä»½ęœ‰é™å…¬åø Range hood and its control method

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EP2360434B1 (en) 2016-08-31
FR2956189A1 (en) 2011-08-12
ES2601815T3 (en) 2017-02-16

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