US20060078444A1 - Liquid-cooled pump control device and fluid pump assembly - Google Patents
Liquid-cooled pump control device and fluid pump assembly Download PDFInfo
- Publication number
- US20060078444A1 US20060078444A1 US11/181,203 US18120305A US2006078444A1 US 20060078444 A1 US20060078444 A1 US 20060078444A1 US 18120305 A US18120305 A US 18120305A US 2006078444 A1 US2006078444 A1 US 2006078444A1
- Authority
- US
- United States
- Prior art keywords
- control device
- pump
- fluid
- pump control
- casing
- 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.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 89
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 11
- 239000000126 substance Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- -1 e.g. Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
Definitions
- the invention relates to a pump control device comprising a casing and a speed controller, in particular a frequency converter, arranged in the casing for controlling the rotational speed of an electric drive motor of a fluid pump. Furthermore, the invention relates to a fluid pump assembly.
- Speed controllers in pump control devices comprise electronic power components which heat up strongly during operation. In order to protect these power components from burning out, the produced heat must be dissipated. This is effected via heat sinks comprising cooling ribs, ventilating fans or the like in order to release the heat by convection or a forced air stream into the environment. Pumps having a liquid-cooled speed controller are known as well.
- a motor pump comprising a cooled frequency converter and an electric motor
- the frequency converter includes a plate as a heat sink on which at least one heat-generating electronic component is mounted, with the plate lying in particular perpendicular to the motor's axis of rotation and being coolable by a branched-off portion of the delivered medium.
- a pump unit which comprises an electric motor cooled by a partial stream of the delivered fluid and comprising a rotor sealed against the delivered fluid.
- the electric motor drives a centrifugal pump.
- a frequency converter for controlling the rotational speed of the pump unit is arranged upstream of the electric motor.
- the partial stream of the delivered fluid which has been branched off for cooling the electric motor and the frequency converter, flows through a cooling jacket enclosing the motor on the circumference.
- the frequency converter which is arranged in a common casing together with the motor, is mounted in a heat-conducting manner on the outside of said cooling jacket.
- a drawback associated with these known pumps comprising a liquid-cooled frequency converter is, on the one hand, their mechanically complicated design which requires elaborate casing and tubing structures in order to branch off the desired partial stream from the delivered fluid, guiding it toward and away from the heat sink of the frequency converter.
- a particular problem arises if foreign substances are contained in the delivered fluid, which are easily deposited in the narrow pipes leading to the heat sink and in the channels, respectively, formed in the heat sink and, consequently, might plug them.
- the purification of the pipes for the partial stream requires a labour-intensive dismantling of the pump.
- the present invention is based on the object of providing a pump control device by means of which the above-described problems of the prior art are avoided.
- the pump control device has a casing in which a speed controller, for example a frequency converter, is arranged for controlling the rotational speed of an electric drive motor of a fluid pump.
- the casing includes a section of good thermal conductivity in which a cavity is formed which exhibits connections for coupling with the output of a fluid pump to be controlled by the pump control device, on the one hand, and with pipes, on the other hand, so that the cavity can be passed through by the entire fluid stream delivered by the fluid pump, wherein the speed controller is connected in a heat- conducting manner to the casing portion of good thermal conductivity, i.e. the casing portion of good thermal conductivity serves as a heat sink for the speed controller.
- the advantages of the pump control device according to the invention are diverse. Its versatility must be emphasized, since it can be connected with existing, commercially available uncontrolled fluid pumps in order to subsequently impart control functions to these pumps.
- the mechanical design of the pump control device according to the invention is simple, solid and robust and thus it can be reliably employed also in harsh operating environments.
- the high cooling capacity of the pump control device according to the invention must also be specifically emphasized, since the entire delivered fluid stream of a pump controlled by the pump control device is used for cooling the speed controller. Thus, there are sufficient cooling capacity resources under all operating conditions, and an electronic monitoring of the temperature in the pump control device can be omitted.
- the pump control device is maintenance-free and unsusceptible to plugging by foreign substances in the pump throughput, since, using the total stream of delivered fluid, foreign substances possibly provided in the delivered fluid are entrained by the fluid stream and, moreover, there are no bottlenecks in the casing of the pump control device. In fact, using the total stream of delivered fluid for cooling the speed controller, the cavity of the casing portion and the connections are dimensioned in such a large size that a plugging thereof by foreign substances is extremely unlikely. It must be mentioned that the delivered fluid is pressed through the casing of the pump control device under the full pump pressure.
- the mounting of the pump control device according to the invention on a pump and the removal from the pump, respectively, can be performed with effortless ease and requires neither special tools nor specialized knowledge.
- heat-generating components of the speed controller directly adjacent to the casing portion of good thermal conductivity in order to dissipate the heat.
- a surface section of these components that is as large as possible should rest against the casing portion of good thermal conductivity.
- heat-generating components of the speed controller may be connected to the casing portion of good thermal conductivity via heat conducting means.
- the casing portion of good thermal conductivity is designed in one piece, preferably as a casting.
- the casing portion of good thermal conductivity is preferred to manufacture from metal or a metal alloy such as brass.
- said pressure in the cavity may advantageously be used as an actual value for the pump control, for which purpose a passage opening into the cavity is provided for the connection of a sensor.
- recesses are formed in the casing portion for receiving large components such as electrolytic capacitors or coils, which recesses project into the cavity or are arranged adjacent to a cavity wall.
- a particularly simple and robust possibility of connecting the pump control device to a pump or pipe, respectively, is provided if the connections of the casing portion of good thermal conductivity are designed as flanges or bushings.
- the casing portion of good thermal conductivity is configured as a casing bottom which can be connected to a casing lid in a fluid-tight manner.
- a high air humidity cannot lead to the formation of condensation water in the interior of the casing.
- the invention comprises a fluid pump assembly comprising a fluid pump and an electric drive motor driving the fluid pump, wherein a pump control device according to the invention controlling the drive motor is connected to the output of the fluid pump.
- a frequency converter spaced apart from an electric pump drive motor and to transmit the electric signals of the frequency converter via cables to the electric drive motor.
- EMC electromagnetic compatibility
- the pump control device has a remote operating element which communicates via control lines with the pump control device.
- control lines between the operating element and the pump control device are also used for the supply of electric energy to the pump control device and to the electric drive motor.
- the electric power supply signals are indeed high-power signals, but they are sinusoidal and exhibit a low mains current frequency of 50-60 Hz, which is why they do not produce any noteworthy interference signals.
- the control signals, modulated on a carrier frequency, may be superposed on the supply signals and separated in the pump control device.
- the fluid pump is designed as a submersible motor-driven pump.
- the fluid pump assembly is thereby inserted into a tube well, where it is located in the fluid to be delivered and the pump control device according to the invention is not only cooled by the flow of the entire fluid throughput but, also from the outside, by the fluid located in the tube well.
- the pump control device according to the invention is not only cooled by the flow of the entire fluid throughput but, also from the outside, by the fluid located in the tube well.
- submersible motor-driven pumps In order that submersible motor-driven pumps can be inserted into casing pipes, they exhibit a casing shape which basically is rotationally symmetrical about a longitudinal axis.
- the pump control device is connected substantially coaxially to the submersible motor-driven pump.
- a pressure sensor used for controlling the pump is integrated in the pump control device. During control, only the additional delivery head resulting from the depth of the positioning of the fluid pump in the fluid to be delivered must be added to the pressure measured by the pressure sensor.
- FIG. 1 shows a bottom view of a casing portion of good thermal conductivity of a pump control device according to the invention
- FIG. 2 shows a sectional view of the casing portion, taken on the line A-A of FIG. 1
- FIG. 3 shows a sectional view of the casing portion, taken on the line B-B of FIG. 3
- FIG. 4 shows a perspective view of the casing portion, seen obliquely from above
- FIG. 5 shows a perspective view of the casing portion, seen obliquely from below
- FIGS. 6 and 7 show perspective views of a first embodiment of a fluid pump assembly according to the invention comprising a pump control device according to the invention placed over a pump
- FIG. 8 shows a second embodiment of a fluid pump assembly according to the invention comprising a fluid pump designed as a submersible motor-driven pump
- FIG. 9 shows a cross section of the pump control device used in the fluid pump assembly of FIG. 8 .
- a fluid pump assembly comprising a fluid pump 100 is illustrated, which is driven by an electric motor 103 .
- the fluid pump 100 exhibits a fluid inlet 101 , into which a fluid stream is sucked (arrow IN), and a fluid outlet 102 , from which the fluid stream delivered by the pump is discharged.
- a pump control device 1 according to the invention is mounted on the fluid outlet 102 , which device comprises a casing consisting of a lid 2 and a casing portion 3 configured as a casing bottom, in which a speed controller is incorporated.
- a display of a manometer 14 is integrated in the casing lid 2 .
- the speed controller can be designed in different ways.
- the pump control device 1 has a connection 7 which is coupled with the fluid outlet 102 of the pump 100 in a fluid-tight manner so that the entire fluid stream delivered by the pump 100 will flow into the connection 7 and will reemerge from a connection 5 formed in the casing portion 3 after having passed through a cavity in the casing portion 3 , which cavity is not illustrated (arrow OUT).
- a cable outlet 16 is visible on the casing portion 3 , through which control and power-supply cables can be guided from the pump control device I to the motor 103 .
- FIGS. 1 to 5 which illustrate the casing portion 3 in various views, are also referred to.
- the casing portion 3 is manufactured as a casting from a metal alloy such as, e.g., brass and therefore has excellent heat conduction properties. It forms a casing bottom in which a speed controlling device 20 (see FIGS. 2 and 3 ) is incorporated.
- a cavity 4 is formed which exhibits connections 5 , 6 , 7 .
- the connections 5 , 6 , 7 can be configured with flanges or as bushings.
- connection 5 , 6 , 7 can be coupled with the output of a fluid pump to be controlled by the pump control device and can thus function as an input connection or serve as an output connection by being connected to pipes which convey the fluid stream to a consumer.
- the connection 7 designed as a bushing is slid over the fluid outlet 102 of the pump 100 and thus receives the entire fluid stream delivered by the pump 100 .
- the fluid stream flows through the cavity 4 and is discharged at connection 5 of the cavity 4 .
- the casing portion 3 forms an extremely efficient liquid-cooled heat sink for the speed controller 20 whose electronic power components are connected in a heat-conducting manner to the casing portion 3 .
- FIG. 1 As illustrated by means of FIG.
- some of the heat-generating components 21 , 22 of the speed controller 20 are directly adjacent to a wall of the casing portion 3 and are cooled by direct contact, whereby a good heat transfer is provided for the components 21 , 22 on the casing portion 3 due to the planar configuration of the bearing surface.
- other components 23 , 24 of the speed controller 20 are connected to the casing portion 3 via heat conducting means 30 .
- two cup-shaped recesses 8 , 9 are formed in the casing portion 3 , which extend adjacent to each other toward the cavity 4 , wherein the limiting walls of the cavity 4 also form wall sections of the cup-shaped recesses 8 , 9 .
- the recesses 8 , 9 are separated from the cavity 4 in a fluid-tight manner.
- the components 23 , 24 for instance, large-volume components such as electrolytic capacitors or coils, are inserted in the recesses 8 , 9 and are sealed by heat conducting means 30 so that between these components and the walls of the recesses 8 , 9 there is the best possible thermal conductivity, whereby the fluid flowing through the cavity 4 is used optimally for the cooling of the components 23 , 24 .
- the cavity 4 of the casing portion 3 of the pump control device 1 is passed through by the entire fluid stream delivered by the pump 100 , whereby basically the delivery pressure generated by the pump prevails in the cavity 4 .
- This pressure may be used as an actual value for controlling the pump.
- a passage opening 15 is therefore formed in the wall separating the interior of the casing from the cavity 4 .
- Said passage opening 15 has a thread so that a sensor such as, e.g., a manometer, whose signals are evaluated by the speed controller, can be screwed in in a fluid-tight manner.
- passage openings 10 , 11 , 12 , 13 are formed in the casing portion 3 , through which cables (not illustrated) for the communication between the speed controller and the pump motor as well as for the power supply of the speed controller can be guided.
- cables not illustrated
- spouts, bushes etc. can be disposed at the passage openings 10 , 11 , 12 , 13 .
- FIG. 8 shows a partially sectioned side view of a second embodiment of a fluid pump assembly according to the invention.
- the fluid pump assembly is housed in a tube well 110 . It comprises a fluid pump 100 ′ designed as a submersible motor-driven pump and an electric drive motor 103 ′ driving the fluid pump 100 ′ as well as a pump control device 1 ′ according to the invention which is connected to the output 102 ′ of the fluid pump 100 ′.
- FIG. 9 shows a schematic cross section of the pump control device 1 ′, taken on the line A-A in FIG. 8 .
- the pump control device 1 ′ comprises a casing consisting of a cylindrical outer wall 2 ′ and a hollow-cylindrical inner wall 3 ′, in which a speed controller, in particular a frequency converter (not illustrated further), is arranged for controlling the rotational speed of the electric drive motor 103 ′.
- the hollow-cylindrical inner wall 3 ′ consists of a material of good thermal conductivity and defines in its interior a cylindrical cavity 4 ′, which—as can be seen in FIG.
- the outer jacket of the hollow-cylindrical inner wall 3 ′ has a hexagonal configuration, thereby having six planar outer surfaces on which, for the purpose of providing the best possible cooling, electronic power components 21 ′, 22 ′ of the speed controller such as, e.g., thyristors or capacitors can be mounted flatly, for instance, by screwing them on after the insertion of a heat conduction paste.
- the hollow-cylindrical inner wall 3 ′ may, for example, be a one-piece extruded profile tube made of metal. After mounting the speed controller, in particular the electronic power components 21 ′, 22 ′, onto the hollow-cylindrical inner wall 3 ′, the cylindrical outer wall 2 ′ is placed over this assembly and tightly connected with the inner wall 3 ′.
- the outer wall 2 ′ also consists of a material of good thermal conductivity.
- the pump control device 1 ′ has a remote operating element 104 which is installed in a place easily accessible for an operator.
- the operating element 104 communicates with the pump control device 1 ′ via a control line 106 .
- a power supply cable 105 leads to the operating element 104 and supplies the operating element 104 , on the one hand, and also the pump control device 1 ′, on the other hand, with electric current by feeding the electric energy of the power supply cable 105 into the control line 106 .
- the electric energy fed into the control line 106 has a sinusoidal progression (e.g. rotary current signals) and a low mains current frequency of 50-60 Hz.
- control line 106 there is no production of any noteworthy electromagnetic interference signals, even if the control line 106 is very long.
- the control signals between the operating element 104 and the pump control device 1 ′ are modulated onto a carrier frequency and superposed on the electric supply signals in the control line 106 ; the separation and demodulation of the control signals takes place in the pump control device 1 ′.
- actual values can, for instance, be transmitted which are taken into account by a control circuit in the pump control device 1 ′, and, as a result of the control, electric signals can be produced, which are transmitted via a cable 107 for the purpose of actuating the drive motor 103 ′.
- a pressure sensor 14 ′ is directly attached to the pump control device 1 ′ (see FIG. 9 ).
- the inner wall 3 ′ thereby exhibits a passage opening 15 ′ into the cavity 4 ′ for the connection of the pressure sensor 14 ′.
- only the additional delivery head resulting from the depth position of the fluid pump 100 ′ in the tube well 1 10 must be added to the pressure measured by the pressure sensor 14 ′.
- the fluid pump 100 ′ is configured as a submersible motor-driven pump and exhibits—just like the drive motor 103 ′—a casing shape which basically is rotationally symmetrical about a longitudinal axis 108 .
- the pump control device 1 ′ is connected coaxially to the submersible motor-driven pump 100 ′, resulting in a very slim and compact configuration.
Abstract
In a pump control device (1, 1′) comprising a casing (2, 3; 2′, 3′) and a speed controller (20), in particular a frequency converter, arranged in the casing for controlling the rotational speed of an electric drive motor (103; 103′) of a fluid pump (100; 100′), the casing includes a section (3; 3′) of good thermal conductivity in which a cavity (4; 4′) is formed which exhibits connections (5, 6, 7; 5′, 6′) for coupling with the output (102; 102′) of a fluid pump (100; 100′) to be controlled by the pump control device and with pipes so that the cavity (4; 4′) can be passed through by the entire fluid stream delivered by the fluid pump, wherein the speed controller (20) is connected in a heat-conducting manner to the casing portion (3; 3′) of good thermal conductivity.
Description
- The invention relates to a pump control device comprising a casing and a speed controller, in particular a frequency converter, arranged in the casing for controlling the rotational speed of an electric drive motor of a fluid pump. Furthermore, the invention relates to a fluid pump assembly.
- Speed controllers in pump control devices comprise electronic power components which heat up strongly during operation. In order to protect these power components from burning out, the produced heat must be dissipated. This is effected via heat sinks comprising cooling ribs, ventilating fans or the like in order to release the heat by convection or a forced air stream into the environment. Pumps having a liquid-cooled speed controller are known as well.
- For instance from DE 196 39 098 A1, a motor pump comprising a cooled frequency converter and an electric motor is known, wherein the frequency converter includes a plate as a heat sink on which at least one heat-generating electronic component is mounted, with the plate lying in particular perpendicular to the motor's axis of rotation and being coolable by a branched-off portion of the delivered medium.
- From EP 0 520 333 A1, a pump unit is in turn known which comprises an electric motor cooled by a partial stream of the delivered fluid and comprising a rotor sealed against the delivered fluid. The electric motor drives a centrifugal pump. A frequency converter for controlling the rotational speed of the pump unit is arranged upstream of the electric motor. The partial stream of the delivered fluid, which has been branched off for cooling the electric motor and the frequency converter, flows through a cooling jacket enclosing the motor on the circumference. The frequency converter, which is arranged in a common casing together with the motor, is mounted in a heat-conducting manner on the outside of said cooling jacket.
- A drawback associated with these known pumps comprising a liquid-cooled frequency converter is, on the one hand, their mechanically complicated design which requires elaborate casing and tubing structures in order to branch off the desired partial stream from the delivered fluid, guiding it toward and away from the heat sink of the frequency converter. A particular problem arises if foreign substances are contained in the delivered fluid, which are easily deposited in the narrow pipes leading to the heat sink and in the channels, respectively, formed in the heat sink and, consequently, might plug them. The purification of the pipes for the partial stream requires a labour-intensive dismantling of the pump. In addition, there is the risk that a plugging of the conduits for conveying the partial stream toward and away from the heat sink of the frequency converter is not noticed in time, since a plugging thereof does not impair the pump's total flow rate. Thus, it is necessary to electronically monitor a possible overheating of the frequency converter. The known pumps involve the further drawback that, using only a partial stream of the delivered fluid, the cooling capacity is rather low, whereby this partial stream must also cool the pump motor, in addition to the frequency converter. Finally, the known pumps comprising liquid-cooled frequency converters are special constructions which must be developed separately for each pump type. The subsequent retrofitting of existing pumps is not possible with the known solutions.
- The present invention is based on the object of providing a pump control device by means of which the above-described problems of the prior art are avoided.
- According to the invention, this object is achieved by providing a pump control device having the features of claim 1. Advantageous embodiments of the invention are set forth in the dependent claims.
- The pump control device according to the invention has a casing in which a speed controller, for example a frequency converter, is arranged for controlling the rotational speed of an electric drive motor of a fluid pump. The casing includes a section of good thermal conductivity in which a cavity is formed which exhibits connections for coupling with the output of a fluid pump to be controlled by the pump control device, on the one hand, and with pipes, on the other hand, so that the cavity can be passed through by the entire fluid stream delivered by the fluid pump, wherein the speed controller is connected in a heat- conducting manner to the casing portion of good thermal conductivity, i.e. the casing portion of good thermal conductivity serves as a heat sink for the speed controller.
- The advantages of the pump control device according to the invention are diverse. Its versatility must be emphasized, since it can be connected with existing, commercially available uncontrolled fluid pumps in order to subsequently impart control functions to these pumps. The mechanical design of the pump control device according to the invention is simple, solid and robust and thus it can be reliably employed also in harsh operating environments. The high cooling capacity of the pump control device according to the invention must also be specifically emphasized, since the entire delivered fluid stream of a pump controlled by the pump control device is used for cooling the speed controller. Thus, there are sufficient cooling capacity resources under all operating conditions, and an electronic monitoring of the temperature in the pump control device can be omitted. The pump control device according to the invention is maintenance-free and unsusceptible to plugging by foreign substances in the pump throughput, since, using the total stream of delivered fluid, foreign substances possibly provided in the delivered fluid are entrained by the fluid stream and, moreover, there are no bottlenecks in the casing of the pump control device. In fact, using the total stream of delivered fluid for cooling the speed controller, the cavity of the casing portion and the connections are dimensioned in such a large size that a plugging thereof by foreign substances is extremely unlikely. It must be mentioned that the delivered fluid is pressed through the casing of the pump control device under the full pump pressure. The mounting of the pump control device according to the invention on a pump and the removal from the pump, respectively, can be performed with effortless ease and requires neither special tools nor specialized knowledge.
- In an embodiment of the invention, it is provided to have heat-generating components of the speed controller directly adjacent to the casing portion of good thermal conductivity in order to dissipate the heat. A surface section of these components that is as large as possible should rest against the casing portion of good thermal conductivity. Alternatively or in addition, heat-generating components of the speed controller may be connected to the casing portion of good thermal conductivity via heat conducting means.
- High robustness and tightness of the pump control device is achieved if the casing portion of good thermal conductivity is designed in one piece, preferably as a casting. For reasons of high robustness as well as good thermal conductivity it is preferred to manufacture the casing portion of good thermal conductivity from metal or a metal alloy such as brass.
- Since, during the operation of the pump control device at a pump, the full output pump pressure of the pump prevails in the cavity of the casing portion of good thermal conductivity, said pressure in the cavity may advantageously be used as an actual value for the pump control, for which purpose a passage opening into the cavity is provided for the connection of a sensor.
- In order to be able to cool differently sized electronic components of the speed controller equally well, in a further embodiment of the pump control device according to the invention, it is provided that recesses are formed in the casing portion for receiving large components such as electrolytic capacitors or coils, which recesses project into the cavity or are arranged adjacent to a cavity wall.
- A particularly simple and robust possibility of connecting the pump control device to a pump or pipe, respectively, is provided if the connections of the casing portion of good thermal conductivity are designed as flanges or bushings.
- Pump control devices are usually used in wet surroundings. In order to prevent condensation water from precipitating in the interior of the casing, which might eventually lead to a breakdown of the speed controller, in one embodiment of the pump control device according to the invention it is provided that the casing portion of good thermal conductivity is configured as a casing bottom which can be connected to a casing lid in a fluid-tight manner. Thus, also a high air humidity cannot lead to the formation of condensation water in the interior of the casing.
- Furthermore, the invention comprises a fluid pump assembly comprising a fluid pump and an electric drive motor driving the fluid pump, wherein a pump control device according to the invention controlling the drive motor is connected to the output of the fluid pump. From the prior art it is known to place a frequency converter spaced apart from an electric pump drive motor and to transmit the electric signals of the frequency converter via cables to the electric drive motor. However, this creates problems in terms of the electromagnetic compatibility (EMC) of said known fluid pump assembly, since electromagnetic interference signals are emitted by the control signals of the frequency converter, which lie in the kilohertz range and, in addition, have steep signal edges. An attempt was made to counter these EMC problems by interposing chokes and using shielded cables, which, however, leads to substantial electric losses that are even greater if shielded cables are used since the cable shield produces a capacitive current load. Due to the inventive measure of connecting a pump control device according to the invention to the output of the fluid pump, the cable length between the pump control device and the electric drive motor, via which the control signals are transmitted—and hence the radiation of interference signals—decrease to a minimum.
- In a suitable advancement of the fluid pump assembly according to the invention, the pump control device has a remote operating element which communicates via control lines with the pump control device. Thereby, the use of the pump is substantially facilitated for a user, since the pumps usually have to be installed in poorly accessible places or are even immersed in wells, whereas the operating element may be mounted in a place easily accessible for a user. Long cables between the operating element and the pump control device do not pose a problem here, since the control signals on these cables exhibit only small currents and low voltages.
- In a preferred embodiment of the fluid pump assembly according to the invention, the control lines between the operating element and the pump control device are also used for the supply of electric energy to the pump control device and to the electric drive motor. The electric power supply signals are indeed high-power signals, but they are sinusoidal and exhibit a low mains current frequency of 50-60 Hz, which is why they do not produce any noteworthy interference signals. The control signals, modulated on a carrier frequency, may be superposed on the supply signals and separated in the pump control device.
- In a particularly preferred embodiment of the fluid pump assembly, the fluid pump is designed as a submersible motor-driven pump. The fluid pump assembly is thereby inserted into a tube well, where it is located in the fluid to be delivered and the pump control device according to the invention is not only cooled by the flow of the entire fluid throughput but, also from the outside, by the fluid located in the tube well. It is indeed known to install a frequency converter directly in an electric drive motor and to insert it into a tube well, but that have always been single-piece constructions matched with the specific motor which naturally were manufactured only in small quantities and hence were accordingly expensive and uneconomic. However, the solution according to the invention also allows the retrofitting of existing submersible motor-driven pumps, thus enabling a production in large quantities. Moreover, partial streams of the fluid, which had to be branched off somewhere, have always been used in the known drive motors comprising an integrated frequency converter.
- In order that submersible motor-driven pumps can be inserted into casing pipes, they exhibit a casing shape which basically is rotationally symmetrical about a longitudinal axis. In order to increase the insertability of a submersible motor-driven pump assembly according to the invention, it is provided that the pump control device is connected substantially coaxially to the submersible motor-driven pump.
- In a compact embodiment of a fluid pump assembly according to the invention, a pressure sensor used for controlling the pump is integrated in the pump control device. During control, only the additional delivery head resulting from the depth of the positioning of the fluid pump in the fluid to be delivered must be added to the pressure measured by the pressure sensor.
- In the following, the invention is described in further detail by way of a non-limiting exemplary embodiment, with reference to the drawings.
- In the drawings,
FIG. 1 shows a bottom view of a casing portion of good thermal conductivity of a pump control device according to the invention,FIG. 2 shows a sectional view of the casing portion, taken on the line A-A ofFIG. 1 ,FIG. 3 shows a sectional view of the casing portion, taken on the line B-B ofFIG. 3 ,FIG. 4 shows a perspective view of the casing portion, seen obliquely from above,FIG. 5 shows a perspective view of the casing portion, seen obliquely from below,FIGS. 6 and 7 show perspective views of a first embodiment of a fluid pump assembly according to the invention comprising a pump control device according to the invention placed over a pump,FIG. 8 shows a second embodiment of a fluid pump assembly according to the invention comprising a fluid pump designed as a submersible motor-driven pump, andFIG. 9 shows a cross section of the pump control device used in the fluid pump assembly ofFIG. 8 . - Initially with reference to
FIGS. 6 and 7 , a fluid pump assembly comprising afluid pump 100 is illustrated, which is driven by anelectric motor 103. Thefluid pump 100 exhibits afluid inlet 101, into which a fluid stream is sucked (arrow IN), and afluid outlet 102, from which the fluid stream delivered by the pump is discharged. A pump control device 1 according to the invention is mounted on thefluid outlet 102, which device comprises a casing consisting of alid 2 and acasing portion 3 configured as a casing bottom, in which a speed controller is incorporated. A display of amanometer 14 is integrated in thecasing lid 2. Depending on the type of theelectric motor 103, the speed controller can be designed in different ways. If theelectric motor 103 is, e.g., a rotary current motor, an electronic frequency converter is used as a speed controller, in case of direct-current motors, a thyristor power converter or a voltage control device is used. The pump control device 1 has aconnection 7 which is coupled with thefluid outlet 102 of thepump 100 in a fluid-tight manner so that the entire fluid stream delivered by thepump 100 will flow into theconnection 7 and will reemerge from aconnection 5 formed in thecasing portion 3 after having passed through a cavity in thecasing portion 3, which cavity is not illustrated (arrow OUT). InFIG. 7 , acable outlet 16 is visible on thecasing portion 3, through which control and power-supply cables can be guided from the pump control device I to themotor 103. - For the subsequent explanations, FIGS. 1 to 5, which illustrate the
casing portion 3 in various views, are also referred to. Thecasing portion 3 is manufactured as a casting from a metal alloy such as, e.g., brass and therefore has excellent heat conduction properties. It forms a casing bottom in which a speed controlling device 20 (seeFIGS. 2 and 3 ) is incorporated. On the bottom side of thecasing portion 3, acavity 4 is formed which exhibitsconnections connections connections FIGS. 6 and 7 , in this exemplary embodiment, theconnection 7 designed as a bushing is slid over thefluid outlet 102 of thepump 100 and thus receives the entire fluid stream delivered by thepump 100. The fluid stream flows through thecavity 4 and is discharged atconnection 5 of thecavity 4. Thus, thecasing portion 3 forms an extremely efficient liquid-cooled heat sink for thespeed controller 20 whose electronic power components are connected in a heat-conducting manner to thecasing portion 3. As illustrated by means ofFIG. 2 , some of the heat-generatingcomponents speed controller 20 are directly adjacent to a wall of thecasing portion 3 and are cooled by direct contact, whereby a good heat transfer is provided for thecomponents casing portion 3 due to the planar configuration of the bearing surface. As illustrated inFIG. 3 ,other components speed controller 20 are connected to thecasing portion 3 via heat conducting means 30. For this purpose, two cup-shapedrecesses casing portion 3, which extend adjacent to each other toward thecavity 4, wherein the limiting walls of thecavity 4 also form wall sections of the cup-shapedrecesses recesses cavity 4 in a fluid-tight manner. Thecomponents recesses recesses cavity 4 is used optimally for the cooling of thecomponents - As mentioned, the
cavity 4 of thecasing portion 3 of the pump control device 1 is passed through by the entire fluid stream delivered by thepump 100, whereby basically the delivery pressure generated by the pump prevails in thecavity 4. This pressure may be used as an actual value for controlling the pump. In thecasing portion 3, apassage opening 15 is therefore formed in the wall separating the interior of the casing from thecavity 4. Saidpassage opening 15 has a thread so that a sensor such as, e.g., a manometer, whose signals are evaluated by the speed controller, can be screwed in in a fluid-tight manner. - Furthermore,
passage openings casing portion 3, through which cables (not illustrated) for the communication between the speed controller and the pump motor as well as for the power supply of the speed controller can be guided. In order to prevent moisture from reaching the interior of the casing, spouts, bushes etc. can be disposed at thepassage openings -
FIG. 8 shows a partially sectioned side view of a second embodiment of a fluid pump assembly according to the invention. The fluid pump assembly is housed in atube well 110. It comprises afluid pump 100′ designed as a submersible motor-driven pump and anelectric drive motor 103′ driving thefluid pump 100′ as well as a pump control device 1′ according to the invention which is connected to theoutput 102′ of thefluid pump 100′. -
FIG. 9 shows a schematic cross section of the pump control device 1′, taken on the line A-A inFIG. 8 . The pump control device 1′ comprises a casing consisting of a cylindricalouter wall 2′ and a hollow-cylindricalinner wall 3′, in which a speed controller, in particular a frequency converter (not illustrated further), is arranged for controlling the rotational speed of theelectric drive motor 103′. The hollow-cylindricalinner wall 3′ consists of a material of good thermal conductivity and defines in its interior acylindrical cavity 4′, which—as can be seen inFIG. 8 —exhibitsconnections 5′, 6′ for coupling with theoutput 102′ of thepump 100′ or with apipe 109, respectively. Due to this design, thecavity 4′ is passed through by the entire fluid stream delivered by thefluid pump 100′ and hence is cooled in the best possible way. In this exemplary embodiment, the outer jacket of the hollow-cylindricalinner wall 3′ has a hexagonal configuration, thereby having six planar outer surfaces on which, for the purpose of providing the best possible cooling,electronic power components 21′, 22′ of the speed controller such as, e.g., thyristors or capacitors can be mounted flatly, for instance, by screwing them on after the insertion of a heat conduction paste. The hollow-cylindricalinner wall 3′ may, for example, be a one-piece extruded profile tube made of metal. After mounting the speed controller, in particular theelectronic power components 21′, 22′, onto the hollow-cylindricalinner wall 3′, the cylindricalouter wall 2′ is placed over this assembly and tightly connected with theinner wall 3′. Suitably, theouter wall 2′ also consists of a material of good thermal conductivity. - Again with reference to
FIG. 8 , the pump control device 1′ has aremote operating element 104 which is installed in a place easily accessible for an operator. Theoperating element 104 communicates with the pump control device 1′ via acontrol line 106. Furthermore, apower supply cable 105 leads to theoperating element 104 and supplies theoperating element 104, on the one hand, and also the pump control device 1′, on the other hand, with electric current by feeding the electric energy of thepower supply cable 105 into thecontrol line 106. The electric energy fed into thecontrol line 106 has a sinusoidal progression (e.g. rotary current signals) and a low mains current frequency of 50-60 Hz. Thus, there is no production of any noteworthy electromagnetic interference signals, even if thecontrol line 106 is very long. The control signals between the operatingelement 104 and the pump control device 1′ are modulated onto a carrier frequency and superposed on the electric supply signals in thecontrol line 106; the separation and demodulation of the control signals takes place in the pump control device 1′. Via theoperating element 104, actual values can, for instance, be transmitted which are taken into account by a control circuit in the pump control device 1′, and, as a result of the control, electric signals can be produced, which are transmitted via acable 107 for the purpose of actuating thedrive motor 103′. For the control, it is furthermore advantageous if apressure sensor 14′ is directly attached to the pump control device 1′ (seeFIG. 9 ). Theinner wall 3′ thereby exhibits apassage opening 15′ into thecavity 4′ for the connection of thepressure sensor 14′. During control, only the additional delivery head resulting from the depth position of thefluid pump 100′ in the tube well 1 10 must be added to the pressure measured by thepressure sensor 14′. - As already mentioned, in the present embodiment of the fluid pump assembly, the
fluid pump 100′ is configured as a submersible motor-driven pump and exhibits—just like thedrive motor 103′—a casing shape which basically is rotationally symmetrical about a longitudinal axis 108. Thereby, the pump control device 1′ is connected coaxially to the submersible motor-drivenpump 100′, resulting in a very slim and compact configuration.
Claims (16)
1. A pump control device comprising a casing and a speed controller, in particular a frequency converter, arranged in the casing for controlling the rotational speed of an electric drive motor of a fluid pump, wherein the casing includes a section of good thermal conductivity in which a cavity is formed which exhibits connections for coupling with the output of a fluid pump to be controlled by the pump control device and with pipes so that the cavity can be passed through by the entire fluid stream delivered by the fluid pump and that the speed controller is connected in the heat-conducting manner to the casing portion of good thermal conductivity.
2. A pump control device according to claim 1 , wherein components of the speed controller are directly adjacent to the casing portion of good thermal conductivity.
3. A pump control device according to claim 1 , wherein components of the speed controller are connected to the casing portion of good thermal conductivity via heat conducting means.
4. A pump control device according to claim 1 , wherein the casing portion of good thermal conductivity is designed in one piece, preferably as a casting.
5. A pump control device according to claim 4 , wherein the casing portion of good thermal conductivity is manufactured from metal or a metal alloy such as brass.
6. A pump control device according to claim 1 , wherein the casing portions of good thermal conductivity exhibits a passage opening into the cavity for the connection of a sensor.
7. A pump control device according to claim 1 , wherein recesses are formed in the casing portion of good thermal conductivity, which recesses project into the cavity or are arranged adjacent to a cavity wall.
8. A pump control device according to claim 1 , wherein the connections of the casing portion of good thermal conductivity comprise flanges or bushings.
9. A pump control device according to claim 1 , wherein the casing portion of good thermal conductivity is configured as a casing bottom connectable to a casing lid in a fluid-tight manner.
10. A pump control device according to claim 1 , wherein the casing portion of good thermal conductivity is configured as a tubular wall which defines the cavity through which the entire fluid stream delivered by the fluid pump can flow.
11. A fluid pump assembly comprising a fluid pump and an electric drive motor driving the fluid pump, wherein a pump control device according to claim 1 , controlling the drive motor, is connected to the output of the fluid pump.
12. A fluid pump assembly according to claim 11 , wherein the pump control device has a remote operating element which communicating via control lines with the pump control device.
13. A fluid pump assembly according to claim 12 , wherein the control lines supply of supply electric energy to the pump control device and to the electric drive motor.
14. A fluid pump assembly according to claim 13 , wherein the fluid pump comprises a submersible motor-driven pump.
15. A fluid pump assembly according to claim 14 , wherein the pump control device is connected substantially coaxially to the submersible motor-driven pump.
16. A fluid pump assembly according to claim 15 , wherein a pressure sensor is integrated in the pump control device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04450177A EP1637741A1 (en) | 2004-09-17 | 2004-09-17 | Liquid cooled pump and pump controller |
EP04450177.3 | 2004-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060078444A1 true US20060078444A1 (en) | 2006-04-13 |
Family
ID=34933155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/181,203 Abandoned US20060078444A1 (en) | 2004-09-17 | 2005-07-13 | Liquid-cooled pump control device and fluid pump assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060078444A1 (en) |
EP (1) | EP1637741A1 (en) |
CA (1) | CA2511423A1 (en) |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080286134A1 (en) * | 2007-05-16 | 2008-11-20 | Steven Regalado | Submersible pumping systems and methods for deep well applications |
US20110129368A1 (en) * | 2009-11-30 | 2011-06-02 | Franklin Electric Company, Inc. | Variable speed drive system |
US20130294931A1 (en) * | 2012-05-04 | 2013-11-07 | Sulzer Pump Solutions Ab | Pump system |
US8664903B2 (en) | 2011-06-27 | 2014-03-04 | Franklin Electric Company, Inc. | Adaptive flux control drive |
WO2014066687A2 (en) * | 2012-10-25 | 2014-05-01 | Sta-Rite Industries, Llc | Sump pump remote monitoring systems and methods |
US20140363318A1 (en) * | 2012-02-27 | 2014-12-11 | Magna Powertrain Of America, Inc. | Oil controller for high temperature epump applications |
US9133853B2 (en) | 2010-07-21 | 2015-09-15 | Itt Manufacturing Enterprises Llc. | Pump designed for installation conversion |
US9328727B2 (en) | 2003-12-08 | 2016-05-03 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US9383244B2 (en) | 2012-10-25 | 2016-07-05 | Pentair Flow Technologies, Llc | Fluid level sensor systems and methods |
US9404500B2 (en) | 2004-08-26 | 2016-08-02 | Pentair Water Pool And Spa, Inc. | Control algorithm of variable speed pumping system |
US9551344B2 (en) | 2004-08-26 | 2017-01-24 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-dead head function |
US9556874B2 (en) | 2009-06-09 | 2017-01-31 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US9568005B2 (en) | 2010-12-08 | 2017-02-14 | Pentair Water Pool And Spa, Inc. | Discharge vacuum relief valve for safety vacuum release system |
US9712098B2 (en) | 2009-06-09 | 2017-07-18 | Pentair Flow Technologies, Llc | Safety system and method for pump and motor |
US9726184B2 (en) | 2008-10-06 | 2017-08-08 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
US9777733B2 (en) | 2004-08-26 | 2017-10-03 | Pentair Water Pool And Spa, Inc. | Flow control |
US9816507B2 (en) | 2008-03-28 | 2017-11-14 | Pentair Flow Technologies, Llc | Wheeled kit for battery-powered back-up sump pump |
US9885360B2 (en) | 2012-10-25 | 2018-02-06 | Pentair Flow Technologies, Llc | Battery backup sump pump systems and methods |
US9932984B2 (en) | 2004-08-26 | 2018-04-03 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US20180245603A1 (en) * | 2017-02-27 | 2018-08-30 | Shimadzu Corporation | Power source-integrated vacuum pump |
CN109479387A (en) * | 2016-07-20 | 2019-03-15 | 斯泰克波尔国际工程产品有限公司 | Pump assembly with integrated manipulator and motor with internal active cooling |
US10240604B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with housing and user interface |
CN109819637A (en) * | 2019-04-09 | 2019-05-28 | 苏州玲珑汽车科技有限公司 | A kind of automobile controller cooling system |
RU2717484C1 (en) * | 2019-07-24 | 2020-03-23 | Валерий Эдуардович Габдрахимов | Device for cooling electric installations for pump units installed in transfer stations |
US10731655B2 (en) | 2004-08-26 | 2020-08-04 | Pentair Water Pool And Spa, Inc. | Priming protection |
US10871001B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Filter loading |
US10907901B2 (en) | 2018-12-03 | 2021-02-02 | Balboa Water Group, Llc | Cooling device and system for bathing installation pump electrical drive |
US10947981B2 (en) | 2004-08-26 | 2021-03-16 | Pentair Water Pool And Spa, Inc. | Variable speed pumping system and method |
USD1006830S1 (en) * | 2022-02-11 | 2023-12-05 | Graco Minnesota Inc. | Control box for a displacement pump |
USD1013732S1 (en) * | 2022-02-11 | 2024-02-06 | Graco Minnesota Inc. | Displacement pump |
USD1014561S1 (en) * | 2022-02-11 | 2024-02-13 | Graco Minnesota Inc. | Displacement pump control box with center section |
USD1014562S1 (en) * | 2022-02-11 | 2024-02-13 | Graco Minnesota Inc. | Displacement pump |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2466632A (en) * | 2008-12-01 | 2010-07-07 | Electronica Products Ltd | Cooling the motor control electronics of a water pump by using the flowing water. |
ITPD20120409A1 (en) * | 2012-12-27 | 2014-06-28 | Dab Pumps Spa | LIQUID FLOW RATE CONTROL EQUIPMENT OF A ELECTRIC PUMP AND THE ELECTRONIC CONTROL TEMPERATURE AND COMMAND OF A PUMPING DEVICE PROVIDING THE ELECTRIC PUMP |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4945884A (en) * | 1989-10-24 | 1990-08-07 | General Motors Corporation | Modular fuel delivery system |
US5050037A (en) * | 1984-01-26 | 1991-09-17 | Fujitsu Limited | Liquid-cooling module system for electronic circuit components |
US5080077A (en) * | 1990-06-01 | 1992-01-14 | General Motors Corporation | Modular fuel delivery system |
US5224356A (en) * | 1991-09-30 | 1993-07-06 | Triangle Research & Development Corp. | Method of using thermal energy absorbing and conducting potting materials |
US5264984A (en) * | 1992-04-06 | 1993-11-23 | Nec Corporation | Cooling system for a package with electronic circuit components |
US5454697A (en) * | 1993-03-24 | 1995-10-03 | Aisan Kogyo Kabushiki Kaisha | Electrically operated pump assembly with an externally installed control circuit |
US5538396A (en) * | 1994-10-24 | 1996-07-23 | Meierhoefer; Ned S. | Water pumping system |
US5546275A (en) * | 1994-09-23 | 1996-08-13 | Motorola, Inc. | Electrical module mounting apparatus |
US5613844A (en) * | 1994-11-15 | 1997-03-25 | Walbro Corporation | Submersible electronic drive module |
US5804297A (en) * | 1995-07-05 | 1998-09-08 | Colvin; David P. | Thermal insulating coating employing microencapsulated phase change material and method |
US6132184A (en) * | 1998-11-05 | 2000-10-17 | Ford Motor Company | Reservoir apparatus for an electronically controlled electric pump |
US6387482B1 (en) * | 1996-10-25 | 2002-05-14 | Vought Aircraft Industries, Inc. | Heat absorbing surface coating |
US6729848B1 (en) * | 2002-12-12 | 2004-05-04 | Hasslen, Iii John S. | Sensor mount for sump draining apparatus |
US6783336B2 (en) * | 2002-06-28 | 2004-08-31 | Visteon Global Technologies, Inc. | Fuel sender assembly |
US7097433B2 (en) * | 2001-09-28 | 2006-08-29 | Struthers Kevin D | Fuel transfer pump |
-
2004
- 2004-09-17 EP EP04450177A patent/EP1637741A1/en not_active Withdrawn
-
2005
- 2005-07-05 CA CA002511423A patent/CA2511423A1/en not_active Abandoned
- 2005-07-13 US US11/181,203 patent/US20060078444A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5050037A (en) * | 1984-01-26 | 1991-09-17 | Fujitsu Limited | Liquid-cooling module system for electronic circuit components |
US4945884A (en) * | 1989-10-24 | 1990-08-07 | General Motors Corporation | Modular fuel delivery system |
US5080077A (en) * | 1990-06-01 | 1992-01-14 | General Motors Corporation | Modular fuel delivery system |
US5224356A (en) * | 1991-09-30 | 1993-07-06 | Triangle Research & Development Corp. | Method of using thermal energy absorbing and conducting potting materials |
US5264984A (en) * | 1992-04-06 | 1993-11-23 | Nec Corporation | Cooling system for a package with electronic circuit components |
US5454697A (en) * | 1993-03-24 | 1995-10-03 | Aisan Kogyo Kabushiki Kaisha | Electrically operated pump assembly with an externally installed control circuit |
US5546275A (en) * | 1994-09-23 | 1996-08-13 | Motorola, Inc. | Electrical module mounting apparatus |
US5538396A (en) * | 1994-10-24 | 1996-07-23 | Meierhoefer; Ned S. | Water pumping system |
US5613844A (en) * | 1994-11-15 | 1997-03-25 | Walbro Corporation | Submersible electronic drive module |
US5804297A (en) * | 1995-07-05 | 1998-09-08 | Colvin; David P. | Thermal insulating coating employing microencapsulated phase change material and method |
US6387482B1 (en) * | 1996-10-25 | 2002-05-14 | Vought Aircraft Industries, Inc. | Heat absorbing surface coating |
US6132184A (en) * | 1998-11-05 | 2000-10-17 | Ford Motor Company | Reservoir apparatus for an electronically controlled electric pump |
US7097433B2 (en) * | 2001-09-28 | 2006-08-29 | Struthers Kevin D | Fuel transfer pump |
US6783336B2 (en) * | 2002-06-28 | 2004-08-31 | Visteon Global Technologies, Inc. | Fuel sender assembly |
US6729848B1 (en) * | 2002-12-12 | 2004-05-04 | Hasslen, Iii John S. | Sensor mount for sump draining apparatus |
Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10642287B2 (en) | 2003-12-08 | 2020-05-05 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10241524B2 (en) | 2003-12-08 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10289129B2 (en) | 2003-12-08 | 2019-05-14 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10409299B2 (en) | 2003-12-08 | 2019-09-10 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10416690B2 (en) | 2003-12-08 | 2019-09-17 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US9399992B2 (en) | 2003-12-08 | 2016-07-26 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US9328727B2 (en) | 2003-12-08 | 2016-05-03 | Pentair Water Pool And Spa, Inc. | Pump controller system and method |
US10502203B2 (en) | 2004-08-26 | 2019-12-10 | Pentair Water Pool And Spa, Inc. | Speed control |
US9551344B2 (en) | 2004-08-26 | 2017-01-24 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-dead head function |
US10731655B2 (en) | 2004-08-26 | 2020-08-04 | Pentair Water Pool And Spa, Inc. | Priming protection |
US10527042B2 (en) | 2004-08-26 | 2020-01-07 | Pentair Water Pool And Spa, Inc. | Speed control |
US10871001B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Filter loading |
US9932984B2 (en) | 2004-08-26 | 2018-04-03 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US10871163B2 (en) | 2004-08-26 | 2020-12-22 | Pentair Water Pool And Spa, Inc. | Pumping system and method having an independent controller |
US9404500B2 (en) | 2004-08-26 | 2016-08-02 | Pentair Water Pool And Spa, Inc. | Control algorithm of variable speed pumping system |
US10480516B2 (en) | 2004-08-26 | 2019-11-19 | Pentair Water Pool And Spa, Inc. | Anti-entrapment and anti-deadhead function |
US10240604B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with housing and user interface |
US10947981B2 (en) | 2004-08-26 | 2021-03-16 | Pentair Water Pool And Spa, Inc. | Variable speed pumping system and method |
US10415569B2 (en) | 2004-08-26 | 2019-09-17 | Pentair Water Pool And Spa, Inc. | Flow control |
US9605680B2 (en) | 2004-08-26 | 2017-03-28 | Pentair Water Pool And Spa, Inc. | Control algorithm of variable speed pumping system |
US11073155B2 (en) | 2004-08-26 | 2021-07-27 | Pentair Water Pool And Spa, Inc. | Pumping system with power optimization |
US11391281B2 (en) | 2004-08-26 | 2022-07-19 | Pentair Water Pool And Spa, Inc. | Priming protection |
US10240606B2 (en) | 2004-08-26 | 2019-03-26 | Pentair Water Pool And Spa, Inc. | Pumping system with two way communication |
US9777733B2 (en) | 2004-08-26 | 2017-10-03 | Pentair Water Pool And Spa, Inc. | Flow control |
US20080286134A1 (en) * | 2007-05-16 | 2008-11-20 | Steven Regalado | Submersible pumping systems and methods for deep well applications |
US20100270028A1 (en) * | 2007-05-16 | 2010-10-28 | Geotech Environmental Equipment, Inc. | Submersible pumping systems and methods for deep well applications |
US10718338B2 (en) | 2008-03-28 | 2020-07-21 | Pentair Flow Technologies, Llc | System and method for portable battery back-up sump pump |
US9816507B2 (en) | 2008-03-28 | 2017-11-14 | Pentair Flow Technologies, Llc | Wheeled kit for battery-powered back-up sump pump |
US10724263B2 (en) | 2008-10-06 | 2020-07-28 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
US9726184B2 (en) | 2008-10-06 | 2017-08-08 | Pentair Water Pool And Spa, Inc. | Safety vacuum release system |
US9712098B2 (en) | 2009-06-09 | 2017-07-18 | Pentair Flow Technologies, Llc | Safety system and method for pump and motor |
US11493034B2 (en) | 2009-06-09 | 2022-11-08 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US10590926B2 (en) | 2009-06-09 | 2020-03-17 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US9556874B2 (en) | 2009-06-09 | 2017-01-31 | Pentair Flow Technologies, Llc | Method of controlling a pump and motor |
US8760089B2 (en) | 2009-11-30 | 2014-06-24 | Franklin Electric Company, Inc. | Variable speed drive system |
US20110129368A1 (en) * | 2009-11-30 | 2011-06-02 | Franklin Electric Company, Inc. | Variable speed drive system |
US9133853B2 (en) | 2010-07-21 | 2015-09-15 | Itt Manufacturing Enterprises Llc. | Pump designed for installation conversion |
US9568005B2 (en) | 2010-12-08 | 2017-02-14 | Pentair Water Pool And Spa, Inc. | Discharge vacuum relief valve for safety vacuum release system |
US8664903B2 (en) | 2011-06-27 | 2014-03-04 | Franklin Electric Company, Inc. | Adaptive flux control drive |
CN104246227A (en) * | 2012-02-27 | 2014-12-24 | 麦格纳动力系美国有限公司 | Electric motor-driven pump |
KR102014785B1 (en) * | 2012-02-27 | 2019-08-27 | 마그나 파워트레인 오브 아메리카, 인크. | Electric motor-driven pump |
KR20190040362A (en) * | 2012-02-27 | 2019-04-17 | 마그나 파워트레인 오브 아메리카, 인크. | Electric motor-driven pump |
US20140363318A1 (en) * | 2012-02-27 | 2014-12-11 | Magna Powertrain Of America, Inc. | Oil controller for high temperature epump applications |
US20130294931A1 (en) * | 2012-05-04 | 2013-11-07 | Sulzer Pump Solutions Ab | Pump system |
EP2660474B1 (en) * | 2012-05-04 | 2021-06-09 | Sulzer Management AG | Pump with electronic control using bidirectional transmission over the power cable |
US10240605B2 (en) * | 2012-05-04 | 2019-03-26 | Sulzer Management Ag | Pump control unit located in the power cord and compatible with multiple pump units |
US9441632B2 (en) | 2012-10-25 | 2016-09-13 | Pentair Flow Technologies, Llc | Sump pump remote monitoring systems and methods |
WO2014066687A3 (en) * | 2012-10-25 | 2014-07-03 | Sta-Rite Industries, Llc | Sump pump remote monitoring systems and methods |
US9885360B2 (en) | 2012-10-25 | 2018-02-06 | Pentair Flow Technologies, Llc | Battery backup sump pump systems and methods |
WO2014066687A2 (en) * | 2012-10-25 | 2014-05-01 | Sta-Rite Industries, Llc | Sump pump remote monitoring systems and methods |
US9383244B2 (en) | 2012-10-25 | 2016-07-05 | Pentair Flow Technologies, Llc | Fluid level sensor systems and methods |
US11015606B2 (en) | 2012-10-25 | 2021-05-25 | Pentair Flow Technologies, Llc | Sump pump remote monitoring systems and methods |
US9638193B2 (en) | 2012-10-25 | 2017-05-02 | Pentair Flow Technologies, Llc | Sump pump remote monitoring systems and methods |
US9920766B2 (en) | 2012-10-25 | 2018-03-20 | Pentair Flow Technologies, Llc | Sump pump remote monitoring systems and methods |
CN109479387A (en) * | 2016-07-20 | 2019-03-15 | 斯泰克波尔国际工程产品有限公司 | Pump assembly with integrated manipulator and motor with internal active cooling |
US10808697B2 (en) * | 2016-07-20 | 2020-10-20 | Stackpole International Engineered Products, Ltd. | Pump assembly having integrated controller and motor with internal active cooling |
US20180245603A1 (en) * | 2017-02-27 | 2018-08-30 | Shimadzu Corporation | Power source-integrated vacuum pump |
US11162510B2 (en) * | 2017-02-27 | 2021-11-02 | Shimadzu Corporation | Power source-integrated vacuum pump |
US10907901B2 (en) | 2018-12-03 | 2021-02-02 | Balboa Water Group, Llc | Cooling device and system for bathing installation pump electrical drive |
CN109819637A (en) * | 2019-04-09 | 2019-05-28 | 苏州玲珑汽车科技有限公司 | A kind of automobile controller cooling system |
RU2717484C1 (en) * | 2019-07-24 | 2020-03-23 | Валерий Эдуардович Габдрахимов | Device for cooling electric installations for pump units installed in transfer stations |
USD1006830S1 (en) * | 2022-02-11 | 2023-12-05 | Graco Minnesota Inc. | Control box for a displacement pump |
USD1013732S1 (en) * | 2022-02-11 | 2024-02-06 | Graco Minnesota Inc. | Displacement pump |
USD1014561S1 (en) * | 2022-02-11 | 2024-02-13 | Graco Minnesota Inc. | Displacement pump control box with center section |
USD1014562S1 (en) * | 2022-02-11 | 2024-02-13 | Graco Minnesota Inc. | Displacement pump |
Also Published As
Publication number | Publication date |
---|---|
EP1637741A1 (en) | 2006-03-22 |
CA2511423A1 (en) | 2006-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060078444A1 (en) | Liquid-cooled pump control device and fluid pump assembly | |
US7781926B2 (en) | Electric motor and series of electric motors | |
CA2279412C (en) | Electric motor with an upstream frequency converter | |
US20220056912A1 (en) | Pump with external electrical components and related methods | |
US5714816A (en) | Electric motor | |
US8628309B2 (en) | Turbomolecular pump device and controlling device thereof | |
CN107453551B (en) | Electrical machine with tangential architecture with enhanced air cooling | |
US10439475B2 (en) | Fan cooled dual-compartment electronic housing for an electric motor | |
US8157542B2 (en) | Brushless motor fuel pump with control electronics arrangement | |
US9467019B2 (en) | Electric motor | |
US9353755B2 (en) | Turbomolecular pump device | |
EP0836008A2 (en) | A vacuum pumping device | |
KR0146362B1 (en) | Suction cleaner | |
CA2626775A1 (en) | Pump apparatus and method | |
CN102868258A (en) | Electronic control device | |
US11564524B2 (en) | Sous vide cooker | |
US10935028B2 (en) | Electric fluid pump for a motor vehicle | |
US9543807B2 (en) | Electric motor | |
JP2009531166A (en) | Suction machine | |
DE19943577A1 (en) | Pump housing with integrated electronics | |
JP2015025429A (en) | Submersible motor pump | |
US20080117595A1 (en) | Operating Housing | |
US10066628B2 (en) | Fan unit with heat transferring connection | |
FI117838B (en) | Liquid heater element and fluid heater element attachment arrangement | |
KR101927625B1 (en) | The motor integrally equipped with speed reducer and inverter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PUMPENFABRIK ERNST VOGEL GESELLSCHAFT G.M.B.H., AU Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SACHER, MANFRED;REEL/FRAME:017036/0589 Effective date: 20050822 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |