CN107476987B - Electronic water pump - Google Patents
Electronic water pump Download PDFInfo
- Publication number
- CN107476987B CN107476987B CN201710642750.2A CN201710642750A CN107476987B CN 107476987 B CN107476987 B CN 107476987B CN 201710642750 A CN201710642750 A CN 201710642750A CN 107476987 B CN107476987 B CN 107476987B
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- China
- Prior art keywords
- end cover
- water pump
- rotating shaft
- cover
- electronic water
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 125000006850 spacer group Chemical group 0.000 claims abstract description 25
- 239000000110 cooling liquid Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 9
- 239000002826 coolant Substances 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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- 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
- F04D29/5806—Cooling the drive system
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- 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
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an electronic water pump, wherein a motor assembly (1) comprises a stator (11) and a rotor (12), and a front end cover (2) and a rear end cover (3) are arranged at two axial ends of the motor assembly; the hydraulic assembly (4) comprises a pump shell (41), an impeller (42) and a rotating shaft (43), the rotating shaft penetrates through the rotor and is fixedly connected with the rotor, and one end of the rotating shaft penetrates through the front end cover and is connected with the impeller; the stator comprises a stator main body (111) and a spacer (112), the spacer, the rotor, the front end cover and the rear end cover limit a liquid circulation area, a front cover through hole (21) is formed in the front end cover, a central shaft hole (431) which penetrates through the rotating shaft along the axial direction is formed in the rotating shaft, and a communication structure which is used for communicating the liquid circulation area with the central shaft hole is arranged in the rear end cover; meanwhile, the heat of the control plate (7) can be carried away by the cooling liquid through the conduction of the rear end cover.
Description
Technical Field
The invention belongs to the technical field of water pumps, and particularly relates to an electronic water pump.
Background
At present, the electric water pump generally adopts motor element drive impeller rotatory, and then orders about the coolant liquid and impresses from electric water pump's coolant liquid entry, and then discharge from electric water pump's coolant liquid export, form comparatively stable flow. Wherein, at the electronic water pump during operation, the stator among the motor element can give off a large amount of heats, especially stator winding, like this, the condition of scalding the working of plastics in the electronic water pump appears owing to the stator high temperature more easily to influence the reliability of electronic water pump operation.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the invention provides the electronic water pump which can effectively reduce the temperature of the stator, so that the damage of plastic parts in the electronic water pump due to the overhigh temperature of the stator can be avoided, and the running reliability of the electronic water pump is improved.
In order to achieve the above object, the present invention provides an electronic water pump, including: the motor assembly comprises a stator and a rotor, and a front end cover and a rear end cover are arranged at two axial ends of the motor assembly; the hydraulic assembly comprises a pump shell, an impeller and a rotating shaft, the impeller and the rotating shaft are accommodated in the pump shell, the rotating shaft penetrates through the rotor and is fixedly connected with the rotor, one end of the rotating shaft penetrates through the front end cover and is connected with the impeller so as to drive the impeller to rotate, and two ends of the rotating shaft are respectively and pivotally arranged on the front end cover and the rear end cover; wherein, the stator comprises a stator main body and a spacer which coats the outside of the stator main body, the spacer is integrated with the stator main body by injection molding, a gap for the circulation of the cooling liquid is arranged between the bottom surface of the front end cover and the axial end surface of the spacer, the rotor, the front end cover and the rear end cover limit a liquid circulation area, a front cover through hole for leading the cooling liquid in the pump shell into the liquid circulation area is formed on the front end cover, a central shaft hole which penetrates along the axial direction is formed on the rotating shaft, a communicating structure for communicating the liquid circulation area with the central shaft hole is arranged on the rear end cover, the communicating structure comprises a sinking groove which is arranged on the top surface of the rear end cover, a bearing mounting groove is arranged in the sinking groove, and the rotating shaft is rotatably arranged in the bearing mounting groove through a bearing, the bearing mounting groove is formed with a plurality of communication holes that introduce the coolant in the liquid circulation zone into the central axial hole of the rotary shaft.
Preferably, a plurality of front cover through holes are formed in the front end cover, the front cover through holes are uniformly distributed along the circumferential direction of the rotating shaft, and an area defined by the front cover through holes is opposite to the impeller.
Preferably, the electronic water pump includes a drive control assembly, the drive control assembly includes a control panel for controlling the rotation of the impeller, the electronic water pump further includes a rear cover plate installed on the rear end cover, the partition and the rear cover plate define a control assembly accommodating cavity separated from the liquid circulation area, and the control panel is located in the control assembly accommodating cavity.
Preferably, the control board is mounted on a bottom surface of the rear cover plate.
Preferably, a heat conducting medium is arranged between the control panel and the rear cover plate.
Preferably, the control board is made of an aluminum substrate.
Preferably, the inner peripheral wall of the partition and the rear end cover are provided with a first sealing ring therebetween, and the outer peripheral wall of the partition and the front end cover and the rear end cover are provided with a second sealing ring therebetween.
Through the technical scheme, in the electronic water pump, the rotating shaft is provided with the central shaft hole, the front end cover and the rear end cover are respectively provided with the front cover through hole and the communicating structure for communicating the liquid circulation area with the central shaft hole, so that cooling liquid can circularly flow in the liquid circulation area, the outer part of the stator main body is coated with the isolating piece, and heat emitted by the stator main body can be quickly conducted to the outer surface of the isolating piece.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an electronic water pump according to a preferred embodiment of the present invention;
FIG. 2 is an overall cross-sectional view of the electronic water pump of FIG. 1;
FIG. 3 is a bottom view of the front end cap of FIG. 1;
fig. 4 is a top view of the rear end cap of fig. 1.
Description of reference numerals:
1 Motor Assembly 2 front end housing
3 rear end cover 4 hydraulic component
7 control panel
11 stator 12 rotor
21 through hole 31 sinking groove of front cover
32 rear cover plate 41 pump shell
42 impeller 43 shaft
81 first seal 82 second seal
111 stator body 112 spacer
311 bearing mounting groove 411 cooling liquid inlet
412 coolant outlet 431 central shaft hole
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides an electronic water pump, which comprises: the motor assembly 1 comprises a stator 11 and a rotor 12, and a front end cover 2 and a rear end cover 3 are arranged at two axial ends of the motor assembly 1; the hydraulic assembly 4 comprises a pump shell 41, an impeller 42 and a rotating shaft 43, wherein the impeller 42 and the rotating shaft 43 are accommodated in the pump shell 41, the rotating shaft 43 penetrates through the rotor 12 and is fixedly connected with the rotor 12, one end of the rotating shaft 43 penetrates through the front end cover 2 and is connected with the impeller 42 so as to drive the impeller 42 to rotate, and two ends of the rotating shaft 43 are respectively and pivotally arranged on the front end cover 2 and the rear end cover 3; the stator 11 includes a stator body 111 and a spacer 112 covering the stator body 111, the spacer 112, the rotor 12, the front cover 2 and the rear cover 3 define a liquid circulation region, the front cover 2 is formed with a front cover through hole 21 for introducing the cooling liquid in the pump housing 41 into the liquid circulation region, the rotating shaft 43 is formed with a central shaft hole 431 penetrating in the axial direction, and the rear cover 3 is provided with a communication structure for communicating the liquid circulation region with the central shaft hole 431.
In this embodiment, the rotating shaft 43 has a central shaft hole 431, and the front cover 2 and the rear cover 3 are respectively provided with a front cover through hole 21 and a communication structure for communicating the liquid circulation region with the central shaft hole 431, so that when the electronic water pump operates, the cooling liquid can circulate in the liquid circulation region, and the exterior of the stator main body 111 is coated with the spacer 112, so that when the electronic water pump operates, a large amount of heat emitted from the stator main body 111 (the stator main body 111 includes the stator core and the stator winding) can be rapidly conducted to the outer surface of the spacer 112. So set up, when the electronic water pump during operation, through the circulation flow of coolant liquid in the liquid circulation district, the sustainable heat that will conduct stator main part 111 on the spacer 112 surface is taken away to can effectively reduce the temperature of stator 11, and then avoid appearing scalding the situation of the working of plastics in the electronic water pump because the temperature of stator 11 is too high, be favorable to improving the reliability of electronic water pump operation. In addition, the efficiency of the electronic water pump is also affected by the overhigh temperature of the stator 11, so that the heat of the stator main body 111 is taken away from the outer surface of the partition 112 through the circulating flow of the cooling liquid in the liquid circulation area, the temperature of the stator main body 111 is further reduced, and the efficiency of the electronic water pump is favorably improved.
Specifically, referring to fig. 1 and 2, a coolant inlet 411 and a coolant outlet 412 are further formed on the pump housing 41 of the electronic water pump, when the motor assembly 1 drives the impeller 42 in the pump housing 41 to rotate, the coolant is pressed into the pump housing 41 through the coolant inlet 411 and then thrown out from the coolant outlet 412 on the pump housing 41, and the coolant is continuously sucked and discharged, so that a relatively stable flow circulation is formed.
In addition, with continued reference to fig. 1 and 2, a central shaft hole 431 is provided in the rotating shaft 43 of the hydraulic assembly 4, a front cover through hole 21 for introducing the coolant in the pump housing 41 into the liquid flowing region is formed in the front cover 2, and a communicating structure for communicating the liquid flowing region with the central shaft hole 431 is provided in the rear cover 3, so that when the electronic water pump is operated, the rotating shaft 43 drives the impeller 42 to rotate in the pump housing 41, a negative pressure is formed below the impeller 42 (i.e., between the impeller 42 and the front cover 2), so that the coolant in the pump housing 41 can be pressed into the liquid flowing region through the front cover through hole 21 in the front cover, and further the coolant flows through the gap between the spacer 112 and the rotor 12, and then enters the central shaft hole 431 of the rotating shaft 43 through the communicating structure in the rear cover 3, and finally the coolant flows out from one end of the rotating shaft 43 in the pump housing 41, a cooling liquid can be circulated in the liquid circulation zone.
Specifically, the separator 112 wrapped outside the stator main body 111 is mainly used for electrically separating the stator main body 111 from the cooling liquid inside the electronic water pump and the liquid outside the electronic water pump (such as water, etc.), and it can be understood that when the electronic water pump works, the stator main body 111 is electrified, and if the stator main body 111 is in contact with the conductive liquid, the stator winding in the stator main body 111 is easily short-circuited, thereby affecting the normal use of the electronic water pump. The spacer 112 may be disposed in various suitable manners, for example, the spacer 112 may be formed outside the stator body 111 by a tool injection manner, or the finished spacer 112 may be sleeved outside the stator body 111 and tightly attached to the stator body 111, so long as the spacer 112 can electrically separate the stator body 111 from the liquid outside the stator body 111. Preferably, referring to fig. 2, the spacer 112 is formed integrally with the stator body 111 by injection molding, so that the stator body 111 can be completely wrapped in the spacer 112, facilitating electrical isolation between the stator body 111 and the liquid outside thereof. In addition, the partition 112 is integrally injection molded, so that the operability is high and the production process is simple.
In addition, referring to fig. 2, a gap for cooling liquid to flow through is formed between the bottom surface of the front end cover 2 and the axial end surface of the spacer 112, so that one end of the stator main body 111 close to the front end cover 2 can also be located in the liquid flowing area, and compared with the case that the cooling liquid only takes away the temperature of the stator main body 111 through the inner peripheral wall of the spacer 112, the arrangement increases the heat dissipation area of the stator 11, and is more beneficial to reducing the temperature of the stator main body 111.
Specifically, referring to fig. 2 and 3, a plurality of front cover through holes 21 are formed in the front end cover 2, the plurality of front cover through holes 21 are uniformly distributed along the circumferential direction of the rotating shaft 43, and the area surrounded by the plurality of front cover through holes 21 faces the impeller 42, so that the front cover through holes 21 are arranged right below the impeller 42, and when the motor rotates, the negative pressure right below the impeller 42 is strong, which is beneficial for the cooling liquid to be pressed into the liquid circulation area from the lower side of the impeller 42. In addition, the plurality of front cover through holes 21 are uniformly distributed along the circumferential direction of the rotating shaft 43, so that the cooling liquid can uniformly flow through the liquid circulation area, and the uniform cooling of the stator main body 111 is facilitated.
In addition, referring to fig. 2 and 4, the communication structure includes a sinking groove 31 provided on the top surface of the rear cover 3, a bearing installation groove 311 is provided in the sinking groove 31, the rotating shaft 43 is rotatably installed in the bearing installation groove 311 through a bearing, and the bearing installation groove 311 is formed with a plurality of communication holes for introducing the coolant in the liquid circulation region into the central shaft hole 431 of the rotating shaft 43, so that the coolant in the liquid circulation region can flow into the central shaft hole 431 of the rotating shaft 43 through the communication holes, thereby allowing the coolant to flow out from one end of the rotating shaft 43 located in the pump housing 41, and further realizing the circulation flow of the coolant. The communication structure provided in the rear cover 3 may be provided in other arrangements than the above arrangement, as long as it allows the coolant in the liquid flow region to flow into the central axial hole 431 of the rotary shaft 43.
Further, referring to fig. 2 and 4, the electronic water pump includes a driving control assembly including a control board 7 for controlling rotation of the impeller 42, and a back cover plate 32 installed at the back cover 3, the spacer 112 and the back cover plate 32 defining a control assembly housing chamber isolated from the liquid circulation region, the control board 7 being located in the control assembly housing chamber.
Specifically, the control board 7 is electrically connected to an external power source, and if the control board 7 is wetted by a conductive fluid, the control board 7 is easily short-circuited, so that the control board 7 can be effectively prevented from short-circuiting by isolating the control assembly accommodating chamber accommodating the control board 7 from the fluid circulation area. In addition, when the electronic water pump works, the control panel 7 can also emit a large amount of heat, so that the control panel 7 is arranged in the control component containing cavity in the rear end cover 3, and the heat of the control panel 7 conducted to the top surface (namely the top surface of the rear cover plate 32) of the rear end cover 3 can be taken away through the cooling liquid flowing circularly, so that the temperature of the control panel 7 can be favorably reduced, and the service life of the control panel 7 can be prolonged.
Further, with continued reference to fig. 2 and 4, the control board 7 is mounted on the bottom surface of the rear cover plate 32, so that the heat of the control board 7 is conveniently conducted to the bottom surface of the rear cover plate 32 and then conducted to the top surface of the rear end cover 3 (i.e. the top surface of the rear cover plate 32), and then the heat conducted to the control board 7 on the top surface of the rear end cover 3 is taken away by the circularly flowing cooling liquid, which is more beneficial to reducing the temperature of the control board 7.
Specifically, for the transmission and the diffusion of intensification temperature, refer to fig. 2, be provided with heat-conducting medium between control panel 7 and the back shroud 32, like this, can make to have better heat conductivity between control panel 7 and the back shroud 32 to the heat that makes control panel 7 distribute easily conducts on back shroud 32, and then cools down control panel 7 through the coolant liquid of back shroud 32 that flows through, is favorable to reducing the temperature of control panel 7. In addition, the control board 7 is made of an aluminum substrate, and the aluminum substrate can enable the control board 7 to have a better heat dissipation effect compared with a PCB.
Referring to fig. 2, a first seal 81 is provided between the inner peripheral wall of the spacer 112 and the rear cover 3, and a second seal 82 is provided between the outer peripheral wall of the spacer 112 and the front cover 2 and the rear cover 3. Specifically, the first sealing ring 81 located between the inner peripheral wall of the partition 112 and the rear end cap 3 is mainly used to prevent the cooling liquid in the liquid flowing area from flowing into the control assembly cavity, so as to wet the control board 7 contained therein, and short-circuit the control board 7. In addition, the second sealing ring 82 disposed between the outer peripheral wall of the partition 112 and the rear end cap 3 is mainly used to prevent liquid (such as water) outside the electronic water pump from leaking into the control assembly cavity and further wetting the control board 7 contained therein; the second seal ring 82 located between the outer peripheral wall of the spacer 112 and the front end cover 2 can prevent the coolant in the liquid circulation region from leaking outward, and can also prevent the liquid outside the electronic water pump from entering the coolant in the liquid circulation region.
It should be noted that other configurations of the electronic water pump according to the present invention are known to those skilled in the art, and are not described herein in detail to reduce redundancy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (7)
1. An electronic water pump, comprising:
the motor assembly (1), the motor assembly (1) includes a stator (11) and a rotor (12), and a front end cover (2) and a rear end cover (3) are arranged at two axial ends of the motor assembly (1);
the hydraulic assembly (4) comprises a pump shell (41), an impeller (42) and a rotating shaft (43), wherein the impeller (42) and the rotating shaft (43) are accommodated in the pump shell (41), the rotating shaft (43) penetrates through the rotor (12) and is fixedly connected with the rotor (12), one end of the rotating shaft (43) penetrates through the front end cover (2) and is connected with the impeller (42) so as to drive the impeller (42) to rotate, and two ends of the rotating shaft (43) are respectively and pivotally mounted on the front end cover (2) and the rear end cover (3);
wherein the stator (11) comprises a stator main body (111) and a partition (112) covering the outside of the stator main body (111), the partition (112) is integrated with the stator main body (111) by injection molding, a gap for the cooling liquid to flow through is arranged between the bottom surface of the front end cover (2) and the axial end surface of the partition (112), the partition (112) defines a liquid flow area with the rotor (12), the front end cover (2) and the rear end cover (3), a front cover through hole (21) for leading the cooling liquid in the pump shell (41) into the liquid flow area is formed on the front end cover (2), a central shaft hole (431) penetrating along the axial direction is formed on the rotating shaft (43), and a communication structure for communicating the liquid flow area with the central shaft hole (431) is arranged on the rear end cover (3), the utility model discloses a cooling liquid circulation structure, including the intercommunication structure set up in sink groove (31) on the top surface of rear end housing (3), be equipped with bearing mounting groove (311) in sink groove (31), pivot (43) pass through the bearing rotatably install in bearing mounting groove (311), bearing mounting groove (311) are formed with coolant liquid in the liquid circulation district is introduced to pivot (43) a plurality of intercommunicating pores in center shaft hole (431).
2. The electronic water pump according to claim 1, wherein the front cover (2) has a plurality of front cover through holes (21), the plurality of front cover through holes (21) are uniformly distributed along a circumferential direction of the rotating shaft (43), and a region surrounded by the plurality of front cover through holes (21) faces the impeller (42).
3. The electronic water pump according to any one of claims 1 or 2, comprising a drive control assembly including a control plate (7) that controls rotation of the impeller (42), the electronic water pump further comprising a back cover plate (32) mounted to the back cover (3), the spacer (112), and the back cover plate (32) defining a control assembly housing isolated from the liquid flow area, the control plate (7) being located within the control assembly housing.
4. The electronic water pump according to claim 3, wherein the control board (7) is mounted on a bottom surface of the back cover plate (32).
5. The electronic water pump according to claim 3, wherein a heat transfer medium is provided between the control board (7) and the back cover plate (32).
6. The electronic water pump according to claim 3, wherein the control board (7) is made of an aluminum substrate.
7. The electronic water pump according to claim 3, wherein a first sealing ring (81) is arranged between the inner peripheral wall of the partition (112) and the rear end cover (3), and a second sealing ring (82) is arranged between the outer peripheral wall of the partition (112) and the front end cover (2) and the rear end cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642750.2A CN107476987B (en) | 2017-07-31 | 2017-07-31 | Electronic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642750.2A CN107476987B (en) | 2017-07-31 | 2017-07-31 | Electronic water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107476987A CN107476987A (en) | 2017-12-15 |
| CN107476987B true CN107476987B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710642750.2A Active CN107476987B (en) | 2017-07-31 | 2017-07-31 | Electronic water pump |
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| CN (1) | CN107476987B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725395A (en) * | 2017-10-25 | 2018-02-23 | 常州威灵电机制造有限公司 | Electronic water pump |
| CN108199548A (en) * | 2018-01-22 | 2018-06-22 | 天津深之蓝海洋设备科技有限公司 | The process for filling colloid and motor stator of a kind of motor stator |
| CN108757578A (en) * | 2018-04-24 | 2018-11-06 | 珠海万伏科技有限公司 | Heat radiating type electronic water pump |
| US11146133B2 (en) * | 2018-08-30 | 2021-10-12 | General Electric Company | Electric machine with rotor coolant and lubrication distribution system, and systems and methods of cooling and lubricating an electric machine |
| CN110094342A (en) * | 2019-06-18 | 2019-08-06 | 苏州玲珑汽车科技有限公司 | Electronic water pump for automobile and automobile based on cooling cycle water route |
| CN110566470A (en) * | 2019-09-19 | 2019-12-13 | 江苏大学 | High-efficient low noise automotive electronics water pump |
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| US2993449A (en) * | 1959-03-09 | 1961-07-25 | Hydratomic Engineering Corp | Motor-pump |
| EP1503083A1 (en) * | 2003-07-30 | 2005-02-02 | Industrie Saleri Italo S.p.a. | An electric pump for cooling circuits |
| CN103261705A (en) * | 2010-08-25 | 2013-08-21 | 麦格纳动力系有限公司 | Electric water pump with stator cooling |
| CN102454641A (en) * | 2010-10-27 | 2012-05-16 | 日本电产三协株式会社 | Pump device |
| CN204783716U (en) * | 2015-07-06 | 2015-11-18 | 龙口中宇热管理系统科技有限公司 | Brushless electric water pump of automobile -used direct current |
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| CN107476987A (en) | 2017-12-15 |
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Effective date of registration: 20190524 Address after: 528311 Building No. 1, 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan District, Guangdong Province Applicant after: Guangdong Welling Automobile Parts Co., Ltd. Address before: 528000 No. 27 Xingye Road, Beijiao Industrial Park, Shunde, Foshan City, Guangdong Province Applicant before: Guangdong Welling Electric Machine Manufacture Co., Ltd. Applicant before: Midea Welling Electric Motor Technology (Shanghai) Co., Ltd. |
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Effective date of registration: 20210713 Address after: 230031 No.418, Caihong Road, high tech Zone, Hefei City, Anhui Province Patentee after: Anhui Weiling Auto Parts Co.,Ltd. Patentee after: GUANGDONG WELLING AUTO PARTS Co.,Ltd. Address before: 528311 Building No. 1, 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan District, Guangdong Province Patentee before: GUANGDONG WELLING AUTO PARTS Co.,Ltd. |
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