CN1645005B - Method for controling air flow rate of air conditioning system - Google Patents
Method for controling air flow rate of air conditioning system Download PDFInfo
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- CN1645005B CN1645005B CN200410057558XA CN200410057558A CN1645005B CN 1645005 B CN1645005 B CN 1645005B CN 200410057558X A CN200410057558X A CN 200410057558XA CN 200410057558 A CN200410057558 A CN 200410057558A CN 1645005 B CN1645005 B CN 1645005B
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- concentration
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- room
- blower fan
- change
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
Method for controlling an air flow rate of an air conditioning system, including the steps of measuring a concentration of volatile organic compounds in air periodically, calculating a value of concentration change from concentration values measured at the present time and in the past, and controlling the flow rate of air for cleaning or ventilating a room with reference to the present concentration and value of concentration change, whereby controlling a flow rate of room cleaning or ventilating air to cope, not only with concentration of organic compounds, but also with rapid change of the concentration of the organic compounds in the air.
Description
Technical field
The present invention relates to a kind of air-conditioning system, especially a kind of method of controlling the air quantity of air-conditioning system, in the method, not only according to airborne organic compound substrate concentration but also control the air quantity of room decontamination or ventilation according to the change in concentration speed of airborne organic compound.
Background technology
Air-conditioning system is according to the air purposes space air to be remained on the equipment of optimal state, comprises air-conditioner, air purifier, ventilation equipment.When air-conditioner utilizes cold-producing medium to carry out phase transformation from surrounding environment absorb heat or towards periphery the characteristic of environmental emission heat cool off or heat rooms.
Air purifier is sent the room from room suction air, removal back to such as the impurity of dust and with cleaned air passes, and ventilation equipment are discharged to space air outdoor, and outdoor air is pumped into the room.
Simultaneously, above-mentioned three kinds of equipment are set to an air-conditioning system recently, rather than are set to separate equipment.Substantially, such air-conditioning system is fit to clean rooms air in the temperature range in the cooling room so that space air remains on.But,,, fresh air is sent into the room so air-conditioning system periodically makes ventilation of room because the air of closed room is contaminated as time goes by and gradually.
In said process, the air quantity of sending into the room after by the air-conditioning system cooling is controlled according to room temperature substantially, and the air quantity of sending into/discharge the room when ventilating is controlled with constant.
But, because above-mentioned typical air-conditioning system only considers that room temperature is controlled, and does not consider the air pollution degree in the room, therefore, this air-conditioning system can not be reacted some for operation important factors, for example pollution rate of the pollution level of room air, room air.
And because a variety of causes, for example indoor smog or unexpected many people use the room at room air, and when being polluted fast, typical air-conditioning system can not correctly be handled this variation of room air.
Summary of the invention
Therefore, the present invention is devoted to a kind of method of controlling the air quantity of air-conditioning system, and it can be avoided substantially because the limitation of correlation technique and one or more problems that defective causes.
The purpose of this invention is to provide a kind of method of controlling the air quantity of air-conditioning system, it not only can dispose the level of pollution of room air, and can correctly dispose the variation rapidly of described level of pollution.
In specification, part illustrated additional advantage of the present invention, purpose and feature, and those skilled in the art is reading over the present invention or can partly understand these advantages, purpose and feature from puts into practice the present invention.Utilize the structure that particularly points out in specification and claims, the accompanying drawing can realize and obtain purpose of the present invention and other advantage.
In order to realize purpose of the present invention and other advantage, as implementing and extensively describe ground here, according to the invention provides a kind of method that is used to control the air-conditioning system air quantity, may further comprise the steps: (a) concentration of the airborne VOC of periodic measurement, (b) utilize in current time and the densimeter that records in the past and calculate the change in concentration amount, (c) control the air quantity that is used to make room decontamination or ventilation with reference to current concentration and change in concentration amount.
Change in concentration amount in step (b) is the concentration that records the current time and the difference of the preceding concentration that once records. be used to make the air quantity of room decontamination or ventilation to comprise the most high-grade air quantity, high-grade air quantity, middle-grade air quantity and deep low gear air quantity.
Preferably, be high, change in concentration amount when high or middle at concentration value, control is used to make the air quantity of room decontamination or ventilation to be the most high-grade air quantity.Is low at concentration value for high, change in concentration amount, perhaps concentration value be in, when the change in concentration amount is high, it is high-grade air quantity that control is used to make the air quantity of room decontamination or ventilation.
Preferably, in concentration value is, the change in concentration amount be in or low, perhaps the concentration value of VOC be low, change in concentration amount for high, it is middle-grade air quantity that control is used to make the air quantity of room decontamination or ventilation.At concentration value is that it is the deep low gear air quantity that control is used to make the air quantity of room decontamination or ventilation during low, change in concentration amount is or when low.
Simultaneously, control the air quantity that is used for clean rooms by control from the room suction air and with the blower fan that air enters the room once more.Enter the blower fan in room by control suction chamber outer air and with outdoor air, perhaps be discharged to outdoor blower fan, control the air quantity that is used to make ventilation of room by control suction room air and with room air.
Simultaneously, step (c) may further comprise the steps: the grade of (c1) determining the concentration value that the current time measures, (c2) determine the grade of the change in concentration amount that calculates in the current time, (c3) with reference to the grade of concentration value and change in concentration amount, control is used for that air sent into first blower fan in room and at least one rotating speed of second blower fan that is used for air is discharged from the room.
Step (c1) comprises the step that the concentration value that will record and different reference values compare, and step (c2) comprises the step that the change in concentration amount that will calculate and different reference values compare.First blower fan and second blower fan are respectively the most at a high speed, at a high speed, rotate under the speed in the middling speed, lowest speed.
Step (c3) can comprise when concentration value for high, change in concentration amount when high or middle, make step of at least one rotation under the most at a high speed in first blower fan and second blower fan.
Step (c3) can comprise when concentration value for high, change in concentration amount when low, make at least one step of under high speed, rotating in first blower fan and second blower fan.
Step (c3) can comprise in concentration value is, when the change in concentration amount is high, make at least one step of rotating in first blower fan and second blower fan under high speed.
Step (c3) can comprise in concentration value is, the change in concentration amount be in or when low, make at least one step of under middling speed, rotating in first blower fan and second blower fan.
Step (c3) can comprise when concentration value be low, when the change in concentration amount is high, make at least one step of under middling speed, rotating in first blower fan and second blower fan.
Step (c3) can comprise when concentration value be during low, change in concentration amount is or when low, make at least one step of under lowest speed, rotating in first blower fan and second blower fan.
Should be understood that above-mentioned general describe and following detailed description of the present invention all is exemplary and indicative, be intended to for the invention provides further explanation as claims are described.
Description of drawings
The accompanying drawing of will be used to provide the present invention further being understood is introduced the application, and as the application's a part, accompanying drawing shows embodiments of the invention and is used for explaining principle of the present invention with specification.In the accompanying drawings:
Fig. 1 has schematically shown an air-conditioning system;
Fig. 2 is a block diagram, has schematically shown the relation between the unit of control section shown in Figure 1 and air-conditioning system;
Fig. 3 is a flow chart, shows according to one preferred embodiment of the present invention, the step in the method for the control section of air-conditioning system shown in Figure 1 control flow;
Fig. 4 is a flow chart, shows according to one preferred embodiment of the present invention, the step in the method for the control section of air-conditioning system shown in Figure 1 control flow.
The specific embodiment
In detail with reference to the preferred embodiments of the present invention, its example is shown in the drawings below.As possible, the identical Reference numeral that uses in whole accompanying drawing refers to identical or similar parts, and being repeated in this description omission it.Fig. 1 has schematically shown an air-conditioning system.
With reference to Fig. 1, indoor unit 10 is installed on the furred ceiling in room, thereby is communicated with the room.Indoor unit 10 comprises: the expansion gear (not shown) is used for the swell refrigeration agent; The indoor heat converter (not shown) is used to make cold-producing medium and room air after the expansion to carry out heat exchange; And the indoor fan (not shown), be used for room air is sucked indoor unit 10, and through indoor heat converter room air sent into the room again.
Though not shown, indoor unit 10 has the filter assemblies that is mounted in it.Remove impurity in the room air of filter assemblies from be inhaled into indoor unit 10.Therefore, indoor unit 10 not only cools off or heat rooms, and as the air purifier that purifies the air of a room.
And, with reference to Fig. 1, outdoor unit 20 arranged outdoor.Outdoor unit 20 comprises: the compressor (not shown) is used for compressed refrigerant; The outdoor heat converter (not shown) is used to make cold-producing medium and outdoor air after the compression to carry out heat exchange; And outdoor fan 21, be used for outdoor air is blown into outdoor heat converter.
When outdoor unit 20 and indoor unit 10 brought into operation, room air was pumped into indoor unit, carries out heat exchange at indoor heat converter, is sent into the room once more then.The room obtains cooling or heating thereupon.Because the filter assemblies (not shown) purifies the air that sucks indoor unit 10, room air obtains cleaning simultaneously.
Simultaneously, a plurality of exhaust outlets 51 and air outlet 41 are arranged on the position away from indoor unit 10 on the ceiling.Exhaust outlet 51 has the exhausting duct 50 that is attached thereto, and air outlet 41 has the air delivery duct 40 that is attached thereto.One end of each air delivery duct 40 and exhausting duct 50 links to each other with outdoor.
In the air delivery duct 40 and the centre of exhausting duct 50 preheat exchanger 60 is arranged, be used to make the indirect distributary heat exchange of room air and outdoor air.Preheating heat exchanger 60 has at least one first flow 61 that is communicated with air delivery duct 40, is used to flow through outdoor air, and at least one second runner 62 that is communicated with exhausting duct 50, is used to flow through room air.The first flow 61 and second runner 62 are arranged to be in contact with one another or intersect.Therefore, when outdoor air and room air process preheat exchanger 60, outdoor air and room air indirect heat exchange do not mix simultaneously each other.
In air-conditioning system shown in Figure 1, air delivery duct 40 and exhausting duct 50 have the pressure fan 45 that is used for to room feed outdoor air respectively, are used for the exhaust blower 55 to outdoor discharge room air.As illustrated in fig. 1 and 2, ON/OFF, the rotary speed of pressure fan 45 and exhaust blower 55 are controlled part 30 controls.
In case exhaust blower 55 and pressure fan 45 start operation, outdoor air is introduced into the room by air delivery duct 40 and air outlet 41, and room air is discharged into outdoor by exhausting duct 50 and exhaust outlet 51.In this case, because outdoor air is introduced into the room after a part of thermal energy transfer that is discharged into outdoor room air is given this outdoor air, the heat loss that causes when therefore ventilating reduces.
Simultaneously, pollute the room air of stagnating and contain a large amount of VOCs (VOC), and harmful to the people that live in the room, for example cause respiratory illness, allergic skin disease, headache or the like.In order to prevent this situation, need to measure the pollution level in room, the air quantity that control purifies air or ventilates based on measurement data.
For this reason, air-conditioning system of the present invention comprises VOC sensor 15. as illustrated in fig. 1 and 2, described VOC sensor 15 is electrically connected on the control section 30. therefore, and airborne VOC in VOC sensor 15 measuring chambers, and send information to control section 30.
Then, control section 30 is based on controlling indoor unit 10, pressure fan 45, exhaust blower 55 respectively from the information of VOC sensor 15, thereby the air quantity in room is promptly sent into or discharged to the air quantity that control purifies or ventilates.With reference to Fig. 3 method according to the control air quantity of first preferred embodiment of the invention will be described.
As the result who judges, the time period that is used for stablize VOC sensor 15 if desired is intact, and then control section 30 maintenances are to the inspection in elapsed time.But as the result who judges, if passed through the described time period, then control section 30 reads in the numerical value (step S2) that VOC sensor 15 places record.
Simultaneously, 15 outputs of VOC sensor are proportional to the voltage that VOC is measured content usually.Therefore, control section 30 is with reference to the content of determining the VOC in the room air from the voltage of VOC sensor 15.At this moment, in order to determine to contain how many VOCs in room air, control section 30 uses some a reference values, for example Xia Mian reference voltage.
At first, control section 30 judges whether the voltage from VOC sensor 15 is higher than first reference voltage, for example 3V (step S3).
As the result of this judgement, if this voltage is higher than 3V, then control section 30 determines that air contains a large amount of VOCs.In view of the above, control section 30 control indoor units 10, pressure fan 45 or exhaust blower 55 maximize and are used to make room decontamination or room with good ventilation air output or exhaust air rate (step S4).
At this moment, when the indoor fan (not shown) of control section 30 control indoor units 10 when maximal rate is rotated, the air quantity of sending into the room after indoor unit 10 places purify becomes maximum.If control section 30 control pressure fans 45 are when maximal rate is rotated, the resh air requirement of sending into the room becomes maximum, if control section 30 control exhaust blowers 55 are when maximal rate is rotated, the air quantity that is discharged to the outside, room becomes maximum.Under the situation of control section 30 control pressure fans 45 or exhaust blower 55, preferably, control section 30 is controlled pressure fan 45 and exhaust blower 55 at the same time with available ventilation.
Simultaneously, if be lower than 3V from the voltage of VOC sensor 15, then control section judges whether this voltage is higher than second reference voltage, for example 2V (step S5).
As the result who judges, if voltage is higher than 2V, then control section 30 determines that air has general content of volatile organic compound.In view of the above, control section 30 control indoor units 10, pressure fan 45 or exhaust blower 55 will be used to make room decontamination or room with good ventilation air output or exhaust air rate to be set to middle (step S6).
In contrast, if voltage is lower than 2V, control section 30 determines that air has low content of volatile organic compound.In view of the above, control section 30 control indoor units 10, pressure fan 45 or exhaust blower 55 minimize and are used to make room decontamination or room with good ventilation air output or exhaust air rate (step S7).
As a reference, the numerical value that records according to VOC sensor 15 has been shown in the following table 1, has been used to make room decontamination or room with good ventilation air output or exhaust air rate.
[table 1] is used to control the method for air quantity according to first embodiment of the invention
| The VOC concentration that records | Air quantity |
| Be higher than 3.0V | Maximum |
| Be lower than 3.0V and be higher than 2.0V | Middle |
| Be lower than 2.0V | Minimum |
Simultaneously, control section 30 repeats to read the operation of VOC sensor 15 measured values, and periodically controls the air quantity that makes room decontamination or ventilation with reference to measured value in the automatic running of air-conditioning system.For this reason, in case finish above-mentioned steps, control section 30 is judged the (step 8) of working under the automatic operational mode of air-conditioning system.
As the result who judges, if air-conditioning system is not in automatic operational mode, i.e. manual operation or when static, control section 30 finishes being used to purify or the control of the required air quantity that ventilates.
In contrast, as the result who judges, if air-conditioning system is in automatic operational mode, then control section 30 is judging whether after VOC sensor 15 reads measured value through Preset Time section (step S9).
If passed through the Preset Time section, then control section 30 reads measured value from VOC sensor 15 once more, and carries out the above-mentioned step that begins from step S2.But if Preset Time Duan Wei process, control section 30 repeating step S8 and S9 then are up to having passed through described Preset Time section.
Thus, air-conditioning system is controlled the air quantity of sending into or discharge the room automatically according to the content of the VOC in the room air, promptly purifies air quantity or ventilation volume.Therefore, according to the first embodiment of the present invention, the air-conditioning system system not only controls indoor air temperature, and controls the purification or the ventilation in room with reference to the level of pollution of room air, thereby makes the room more comfortable.
But, even purify air quantity or ventilation volume according to the content of the VOC in the room air and controlled, also there is limitation in this air-conditioning system, promptly can not effectively control the quick pollution of room air.That is, the limitation of this air-conditioning system is to be difficult to sensing and disposes by the room air that causes of uprushing of number in smog or the room and pollute fast.
Therefore, the present invention has recommended a kind of improvement compound method according to second embodiment of the invention control air quantity, and this method can overcome above-mentioned limitation.In overcoming circumscribed second embodiment of first embodiment, in order to control the air quantity of air-conditioning system, not only consider the absolute concentration of the VOC that contains in the room air, and consider the variation of the concentration time per unit of VOC.
Therefore, according to the method for the control air quantity of second embodiment of the invention, control section 30 can determine the quick pollution of current room air by the variation of concentration or remove and pollute, thereby can effectively dispose the quick pollution of room air.To describe method in detail with reference to Fig. 4 according to the control air quantity of second preferred embodiment of the invention.
At first, when automatic operation began, VOC sensor 15 was stabilized.Certainly, air-conditioning system one puts into operation, and VOC sensor 15 just can be implemented described stable.Then, judgement has been passed through and has been used for VOC stable time period (step S10).
As a result of, be used for the stable time period, then the concentration of the airborne VOC of VOC sensor 15 periodic measurements if passed through.Calculate the variable quantity dV (S20) of concentration then from the concentration value of current time and past measurement.Because the concentration of VOC obtains periodic measurement, so the variable quantity dV of concentration is defined as the concentration value that records at present and the difference of the preceding concentration value that once records.
Thus, in case recorded airborne organic volatile compound concentrations and calculated the variable quantity dV of concentration, control section 30 just with reference to change in concentration amount dV control send into or discharge the room so that the air quantity of room decontamination or ventilation.
For this reason, control section 30 control is sent air into the blower fan (first blower fan) in room and with the rotating speed of air from the blower fan (second blower fan) of indoor discharge.This first blower fan can be defined as being arranged on the blower fan (not shown) on the indoor unit 10 and be set in the pressure fan 45 on the air delivery duct 40 at least one.
If first blower fan is defined as indoor fan, suction indoor unit 10 when control section 30 is controlled at air cleaning, be purified and be admitted to once more the air quantity in room at the filter assemblies place.Relative therewith, if first blower fan is defined as pressure fan 15, then control section 30 is controlled at the outdoor air quantity of sending into the room when ventilating by air delivery duct 40.
Simultaneously, though air-conditioning system can independently be carried out the step that makes room decontamination or ventilation, air-conditioning system can be carried out the step that makes room decontamination or ventilation simultaneously.Therefore, first fan can be defined as indoor fan and pressure fan 45 both.
In this case, in the process of control section 30 control room inner blowers and pressure fan 45, control section 30 cleaning room airs make the room air circulation simultaneously in the concentration of reference VOC and change in concentration amount dV.
Then, second blower fan may be defined as the exhaust blower 55 that is positioned on the exhausting duct 50.Therefore, by the rotating speed with reference to described concentration and change in concentration amount dV control exhaust blower 55, control section 30 control when ventilating is discharged to outdoor air quantity by exhausting duct 50.
Simultaneously, the concentration that records of control section reference as shown in the table and change in concentration amount dV control is sent into or is discharged the room so that the air quantity of room decontamination or ventilation.As a reference, be used to make the air quantity of room decontamination or ventilation to comprise the most high-grade air quantity, high-grade air quantity, middle-grade air quantity and deep low gear air quantity.
[table 2] improvement embodiment according to the present invention controls the method for air quantity
Referring to table 2, if the concentration value of VOC is high, the change in concentration amount be high or in, then control section is judged the not only current pollution largely in room, and current quilt pollutes fast.In view of the above, control section 30 is controlled, and will be used to make the air quantity of room decontamination or ventilation to be set at the most high-grade air quantity.
If the concentration value of VOC is high, the change in concentration amount is low, and then control section 30 is judged that the room is current and do not polluted fast, largely pollutes even the room is current.During if the concentration value of VOC is, the change in concentration amount is high, and then control section 30 judges that the current quilt in rooms pollutes fast, largely pollutes even the room is current.Therefore, in above-mentioned two kinds of situations, control section 30 is controlled, and will be used to make the air quantity of room decontamination or ventilation to be set at high-grade air quantity.
During if the concentration value of VOC is, the change in concentration amount be in or low, perhaps the concentration value of VOC is low, the change in concentration amount is high, then control section judges that the room is current by light contamination, and current pollution rate increases gradually. therefore, and in these cases, control section 30 is controlled, and will be used to make the air quantity of room decontamination or ventilation to be set at middle-grade air quantity.
At last, if the concentration value of VOC is low, the change in concentration amount be in or low, then control section 30 is judged that the room is current and is cleaned, and is not currently polluted fast.In view of the above, control section 30 is controlled, and will be used to make the air quantity of room decontamination or ventilation to be set at the deep low gear air quantity.
Simultaneously, referring to table 2, for according to the concentration of VOC and change in concentration amount control air quantity, control section 30 is determined the grade of concentration of the VOC that records at VOC sensor 15 places and the grade of the current change in concentration amount that calculates.
Concentration scale compares to determine by concentration value that will record at VOC sensor 15 places and the different reference values of setting in advance.The change in concentration amount also is by current change in concentration amount that calculates and the different reference values of setting are in advance compared to determine.
In case concentration and change in concentration amount are determined by said method, control section 30 control is used at least one rotating speed of first blower fan that air is sent into the room and second blower fan that air is discharged from the room, thereby control is used to make the air quantity of room decontamination or ventilation.In this case, each in first blower fan and second blower fan is with the rotation of rotating speed in the different rotating speeds, described different rotating speeds comprises the most at a high speed, at a high speed, middling speed, lowest speed.
When first or second blower fan rotates under the most at a high speed, be used to make the air quantity of room decontamination or ventilation to become the most high-grade air quantity, when first or second blower fan rotates under high speed, be used to make the air quantity of room decontamination or ventilation to become high-grade air quantity, when first or second blower fan rotates under middling speed, be used to make the air quantity of room decontamination or ventilation to become middle-grade air quantity, when first or second blower fan rotates under lowest speed, be used to make the air quantity of room decontamination or ventilation to become the deep low gear air quantity.
Flow chart among Fig. 4 show the concentration that is used for determining VOC and VOC the change in concentration amount grade and determine that according to this grade the result determines the step of the operation of air quantity.Illustrate in greater detail the operation of determining air quantity with reference to Fig. 4.
At first, control section judges whether current concentration value is higher than first reference value, and 3V for example is with the grade (S30) of the concentration of determining VOC.As a result of, if current concentration value is higher than described first reference value, then control section 30 determines that current concentration is high.
In case it is high determining current concentration value grade in step S30, then control section 30 is determined the grade of change in concentration amount in the current time.For this reason, control section 30 judges whether the change in concentration amount that calculates is higher than one the 3rd a reference value, for example+0.1 (S31).As a result of, if current change in concentration amount is higher than described the 3rd a reference value, then control section 30 determines that the grade of current change in concentration amount is high.
But as the result in step S31, if current change in concentration amount dV is not higher than described the 3rd a reference value, then control section 30 judges whether current change in concentration amount is higher than one the 4th a reference value, for example-0.1 (S32).As a result of, if current change in concentration amount is higher than described the 4th a reference value, during then control section 30 determines that the grade of current change in concentration amount is.
Simultaneously, referring to table 2, if current concentration value is high, current change in concentration amount dV be height or in, control section 30 is identified for making the air quantity of room decontamination or ventilation to be the most high-grade air quantity.In this case, control section 30 makes at least one rotation (step S71) under the most at a high speed in first blower fan and second blower fan.
Be lower than the 4th a reference value if determine the variable quantity dV of concentration at step S32, even then current concentration value is high, control section 30 determines that also the change in concentration amount is low. in view of the above, shown in Fig. 4 and table 2, control section 30 rotates to have high-grade air quantity in first blower fan and second blower fan at least one under high speed.
If determine that at step S30 concentration value is lower than first reference value, then control section 30 judges whether current concentration value is higher than second a reference value to determine current concentration value (S40).As a result of, if current concentration value is higher than second a reference value, during then control section 30 determines that current concentration value is.
Then, control section 30 judges whether current change in concentration amount is higher than the 3rd a reference value, promptly+0.1, and to determine the grade (S50) of current change in concentration amount.As a result of, if current change in concentration amount is higher than the 3rd a reference value, then control section 30 determines that current change in concentration amounts be high, during current concentration value of while is.
Therefore, in this case, shown in Fig. 4 and table 2, control section 30 makes at least one rotation in first blower fan and second blower fan, to have high-grade air quantity (S72).
Simultaneously, if determine that in step S50 current change in concentration amount is lower than the 3rd a reference value, then control section 30 judges whether current change in concentration amount is higher than the 4th a reference value, promptly-0.1, and to determine the grade (S60) of current change in concentration amount.
As its result, if current change in concentration amount is higher than the 4th a reference value, during then control section 30 determines that current concentration values are, during current change in concentration amount is simultaneously.In contrast, as the result who judges, if current change in concentration amount is lower than the 4th a reference value, during then control section 30 determined that current concentration value is, current change in concentration amount was low simultaneously.
In view of the above, shown in Fig. 4 and table 2, control section 30 rotates to have middle-grade air quantity (S73) in first blower fan and second blower fan at least one under middling speed.
Simultaneously, if judge that in step S40 current concentration value is lower than second a reference value, then control section 30 determines that current concentration value is low.So in order to determine the grade of current change in concentration amount, control section 30 judges whether current change in concentration amount is higher than the 3rd a reference value, promptly+0.1 (S41).
As its result, if current change in concentration amount is higher than the 3rd a reference value, then control section 30 determines that current change in concentration amount is high, and current concentration value is low simultaneously.In view of the above, shown in Fig. 4 and table 2, control section 30 rotates to export middle-grade air quantity (S73) in first blower fan and second blower fan at least one under middling speed.
In contrast, if determine that current change in concentration amount is lower than the 3rd a reference value, in order to determine the grade of current change in concentration amount, control section 30 judges whether current change in concentration amount is higher than the 4th a reference value, promptly-0.1 (S42).
As its result, if current change in concentration amount is higher than the 4th a reference value, during then control section 30 determined that current change in concentration amount is, current concentration value was low simultaneously.In contrast, as the result who judges, if current change in concentration amount is lower than the 4th a reference value, then control section 30 determines that current change in concentration amount is low, and current concentration value is low simultaneously.
Therefore, shown in Fig. 4 and table 2, control section 30 rotates with output deep low gear air quantity (S74) in first blower fan and second blower fan at least one under lowest speed.
Simultaneously, control section 30 in the automatic running of air-conditioning system, repeat to read at VOC sensor 15 record numerical value, with reference to recording the operation that Numerical Control makes the air quantity of room decontamination or ventilation.For this reason, after finishing above-mentioned operation, control section 30 judges whether air-conditioning system is moving (S80) under the operational mode automatically.
As the result who judges, if air-conditioning system do not moving under the operational mode automatically, i.e. manually operation, perhaps fixing operation, then control section 30 stops the air quantity control that makes room decontamination or ventilate required.
In contrast, as the result who judges, if air-conditioning system is being moved under the operational mode automatically, then control section 30 judges whether passed through Preset Time section (S90) after VOC sensor 15 places read measured value.
If passed through the Preset Time section, then control section 30 reads the numerical value that records at VOC sensor 15 places once more, and begins to carry out above-mentioned steps from step S20.But if do not have through the default time period, control section 30 repeating step S80 and S90 then are until through described Preset Time section.
As mentioned above, the method for the air quantity of control air-conditioning system of the present invention has following advantage.
When control makes the institute required airflow of room decontamination or ventilation, not only consider the absolute concentration of VOC, and considered the change in concentration amount of VOC.Therefore, when making room decontamination or ventilating, not only the level of pollution of room air is disposed, and quick room air pollution is also disposed.
Those skilled in the art can make various deformation and modification to the present invention under the situation that does not break away from spirit of the present invention or protection domain obviously.Therefore, the invention is intended to cover all modification that enters claims protection domain and equivalent thereof and distortion.
The present invention requires to enjoy in the priority of the Korean application 2004-0004152 that submitted on January 20th, 2004, and the full content of this application is hereby incorporated by.
Claims (9)
1. method that is used to control the air-conditioning system air quantity may further comprise the steps:
(a) concentration of measurement current time VOC and calculating are in current time and in the past measured change in concentration amount;
(b) determine the grade of concentration numerical value by more current concentration value and each reference value; With
(c) grade of determining the change in concentration amount by the change in concentration amount relatively calculated and each reference value; And
(d) control first fan and second fan rotary speed of one of them at least with reference to the grade of the grade of determined concentration numerical value and change in concentration amount, first fan is used for to room supply air, and second fan is used for discharging from the room air.
2. the method for claim 1, wherein the change in concentration amount in step (d) is the concentration that records the current time and the difference of the preceding concentration that once records.
The method of claim 1, wherein first blower fan and second blower fan respectively the most at a high speed, at a high speed, rotate under the speed in the middling speed, lowest speed.
The method of claim 1, wherein step (d) can comprise when concentration value for high, change in concentration amount when high or middle, make step of at least one rotation under the most at a high speed in first blower fan and second blower fan.
The method of claim 1, wherein step (d) can comprise when concentration value for high, change in concentration amount when low, make at least one step of under high speed, rotating in first blower fan and second blower fan.
6. the method for claim 1, wherein step (d) can comprise in concentration value is, when the change in concentration amount is high, make at least one step of rotating in first blower fan and second blower fan under high speed.
The method of claim 1, wherein step (d) can comprise in concentration value is, the change in concentration amount be in or when low, make at least one step of under middling speed, rotating in first blower fan and second blower fan.
The method of claim 1, wherein step (d) can comprise when concentration value be low, when the change in concentration amount is high, make at least one step of under middling speed, rotating in first blower fan and second blower fan.
The method of claim 1, wherein step (d) can comprise when concentration value be during low, change in concentration amount is or when low, make at least one step of under lowest speed, rotating in first blower fan and second blower fan.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR4152/04 | 2004-01-20 | ||
| KR4152/2004 | 2004-01-20 | ||
| KR1020040004152A KR100577212B1 (en) | 2004-01-20 | 2004-01-20 | Method for Controlling Airflow Volume of Ventilating System |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1645005A CN1645005A (en) | 2005-07-27 |
| CN1645005B true CN1645005B (en) | 2010-05-12 |
Family
ID=34747892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410057558XA Expired - Fee Related CN1645005B (en) | 2004-01-20 | 2004-08-16 | Method for controling air flow rate of air conditioning system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20050155366A1 (en) |
| KR (1) | KR100577212B1 (en) |
| CN (1) | CN1645005B (en) |
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| JP2005233484A (en) * | 2004-02-18 | 2005-09-02 | Sanyo Electric Co Ltd | Air conditioner |
| KR100640801B1 (en) * | 2005-05-10 | 2006-11-02 | 엘지전자 주식회사 | Method for controlling vane of ceiling type air conditioner |
| AU2006316147B2 (en) * | 2005-11-17 | 2009-11-12 | Lg Electronics, Inc. | Air conditioning system and controlling method thereof |
| GB0905871D0 (en) * | 2009-04-03 | 2009-05-20 | Eaton Williams Group Ltd | Cooling distribution unit |
| CN101737909B (en) * | 2009-12-25 | 2012-07-04 | 四川长虹空调有限公司 | Method for setting address of indoor unit of central air conditioning system |
| CN102353100B (en) * | 2011-09-21 | 2013-07-24 | 山东大学 | Working method of automatic shifting air purifier |
| CN102393058B (en) * | 2011-10-24 | 2013-05-08 | 杨光 | End control system for air conditioning systems |
| CN105465944A (en) * | 2014-08-28 | 2016-04-06 | 合肥阿德勒电器有限公司 | Air purifier adopting wireless control |
| CN104566831B (en) * | 2015-01-21 | 2017-05-10 | 广东美的制冷设备有限公司 | Control method of air conditioner and control system of air conditioner |
| CN104913454A (en) * | 2015-06-05 | 2015-09-16 | 广东美的制冷设备有限公司 | Control system for air cleaning device, control method and household electrical appliance |
| CN107339741B (en) * | 2017-03-29 | 2023-07-25 | 宁波方太厨具有限公司 | Air purifying system |
| CN111692719A (en) * | 2019-03-12 | 2020-09-22 | 青岛海尔智能技术研发有限公司 | Air conditioner control method and device and air conditioner |
| KR102273034B1 (en) * | 2019-06-27 | 2021-07-06 | 엘지전자 주식회사 | Intelligent Air Cleaner and Control Method therof |
| CN110762745B (en) * | 2019-10-18 | 2021-11-30 | Tcl空调器(中山)有限公司 | Air conditioner filter screen purification reminding method, air conditioner and storage medium |
| WO2021236413A1 (en) | 2020-05-18 | 2021-11-25 | Wangs Alliance Corporation | Germicidal lighting |
| US11027038B1 (en) | 2020-05-22 | 2021-06-08 | Delta T, Llc | Fan for improving air quality |
| US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
| US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
| US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR100577212B1 (en) | 2006-05-10 |
| KR20050076247A (en) | 2005-07-26 |
| CN1645005A (en) | 2005-07-27 |
| US20050155366A1 (en) | 2005-07-21 |
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