CN108167200B - Electronic water pump with active cooling channel - Google Patents

Electronic water pump with active cooling channel Download PDF

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Publication number
CN108167200B
CN108167200B CN201810227035.7A CN201810227035A CN108167200B CN 108167200 B CN108167200 B CN 108167200B CN 201810227035 A CN201810227035 A CN 201810227035A CN 108167200 B CN108167200 B CN 108167200B
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China
Prior art keywords
pump
electronic water
water pump
active cooling
annular space
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CN201810227035.7A
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Chinese (zh)
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CN108167200A (en
Inventor
郑旭
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Suzhou Linglong Automobile Technology Co ltd
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Suzhou Linglong Automobile Technology Co ltd
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Priority to CN201810227035.7A priority Critical patent/CN108167200B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/5806Cooling the drive system
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/586Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5886Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to an electronic water pump with an active cooling channel, which comprises a cylindrical pump shell, an outer shell, a motor stator, a motor rotor, a control board, a pump cover and an impeller, wherein the pump shell is connected with the pump cover to form a closed pump water chamber; the control board drives the motor stator to form a magnetic field and drives the motor rotor and the impeller to rotate. According to the electronic water pump, the cooling cavity communicated with the water pumping chamber is arranged, the temperature of the motor stator shell is taken away by the cooling liquid in a mode of combining water flow in the pump with natural heat convection, extra energy consumption equipment is not needed, and the temperature of the motor stator and the motor rotor can be lower than the temperature of the external environment due to the adoption of a liquid cooling design, so that the motor is ensured to work in an optimal state.

Description

Electronic water pump with active cooling channel
Technical Field
The invention relates to an electronic water pump with an active cooling channel, and belongs to the field of automobile equipment.
Background
The layout of automotive power systems tends to be compact, with a large number of heat sources being concentrated, whereby the performance of their cooling systems directly affects the reliability of the overall system. In particular, for an electronic water pump, firstly, high efficiency of hydraulic performance needs to be ensured, and the required flow output can be provided by using the minimum energy; secondly, it is necessary to ensure that the water pump and its motor itself generate as little heat radiation to the outside as possible, and the conventional design in the prior art has difficulty in solving this problem.
The existing electronic water pump for the automobile is mainly used in a thermal management system of a power element (such as an engine, a motor, a storage battery and the like), the environment temperature can be generally 80-150 ℃, and the heat dissipation condition of the motor is very bad. The traditional design adopts a cooling fin scheme more than the common motor, but still has difficulty in controlling the temperature in a more reasonable range. Therefore, the problems of low motor efficiency, reduced reliability, overhigh material cost and the like are caused.
Meanwhile, in the prior art, a cooling design of an automobile electronic water pump motor is generally that cooling fins are arranged on a stator shell to realize passive cooling, and the design scheme of a common industrial motor is essentially used for reference, and special conditions of high environment temperature of the automobile electronic water pump are not considered, so that the cooling efficiency is poor, the motor temperature is far higher than the optimal working temperature (because the motor temperature cannot be lower than the environment temperature), and the problems of demagnetization of a permanent magnet and the like possibly occur. On the other hand, the heat emitted to the outside in turn makes the working environment of the power source worse, and the interaction effect is generated.
Disclosure of Invention
The invention aims to provide an electronic water pump with an active cooling channel, which has a simple structure, can realize effective heat dissipation of a motor of the electronic water pump, and can ensure that the motor of the water pump does not generate heat radiation to the external environment.
In order to achieve the above purpose, the present invention provides the following technical solutions: the novel water pump comprises a cylindrical pump shell, an outer shell, a motor stator, a motor rotor, a control board, a pump cover and an impeller, wherein the pump shell is connected with the pump cover to form a closed pump water chamber; the control board drives the motor stator to form a magnetic field and drives the motor rotor and the impeller to rotate.
Further, the pump cover includes a plurality of fin rings disposed within the annular space and dividing a portion of the annular space into a plurality of the cooling cavities.
Further, the fin ring is arranged along the circumferential direction of the annular space, the fin ring comprises an annular portion and a sheet-shaped portion, the annular portion is arranged on the inner side of the annular space along the circumferential direction of the annular space, and the sheet-shaped portion is parallel to the pump shaft direction of the electronic water pump and is arranged between the annular portion and the pump cover, so that the manufacturing difficulty of the electronic water pump is reduced, and the production cost is reduced.
Further, the cooling cavity is of a semi-closed structure, and the opening end of the cooling cavity is arranged on one side facing the pumping chamber so as to be communicated with the pumping chamber.
Further, the radial thickness of the cooling cavity is 0.1 times of the outer diameter of the motor stator, and the depth of the cooling cavity is 0.2 times of the outer diameter of the motor stator, so that the cooling cavity has higher cooling efficiency.
Further, the motor rotor is mounted in the annular space by a spindle, which is also connected to the impeller.
Further, the electronic water pump with the active cooling channel further comprises shaft seals and shaft coupling bearings, wherein the shaft seals and the shaft coupling bearings are arranged on two sides of the mandrel, the shaft seals are arranged close to the impeller relative to the shaft coupling bearings, and the shaft seals are connected with the pump cover to seal one end of the annular space.
Further, the electronic water pump with the active cooling channel further comprises an electric room, and the control panel is arranged in the electric room.
Further, the pump cover is made of metal or composite material with high heat conductivity coefficient, preferably aluminum material.
Further, the outer shell is selected from a metal or a composite material with low heat conductivity coefficient, preferably polyphenylene sulfide or polycarbonate.
The invention has the beneficial effects that: according to the electronic water pump with the active cooling channel, the cooling cavity communicated with the water pumping chamber is arranged, the temperature of the motor stator shell is taken away by the cooling liquid in a mode of combining water flow in the pump with natural heat convection, no extra energy consumption equipment is needed, and the temperature of the motor stator and the motor rotor can be lower than the temperature of the external environment due to the adoption of a liquid cooling design, so that the motor is ensured to work in an optimal state.
In addition, the double-layer shell design adopted by the electronic water pump with the active cooling channel ensures that the heat radiation of the motor can not be directly emitted to the external environment, thereby avoiding the influence on other power elements. The whole design has simple structure, no need of special materials and technology, high manufacturability and low realization cost.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an electronic water pump with an active cooling channel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the electronic water pump shown in FIG. 1;
fig. 3 is a schematic diagram of the principle of cooling by the electronic water pump.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, an electronic water pump with an active cooling channel according to an embodiment of the present invention includes a cylindrical pump housing 1, an outer housing 2, a motor rotor 3, a motor stator 4, a control board (not shown), a pump cover 5, and an impeller 6, wherein the pump housing 1 and the pump cover 5 are connected to form a closed pump chamber 11, the impeller 6 is disposed in the pump chamber 11, the pump cover 5 and the outer housing 2 enclose a semi-closed annular space 21, the motor rotor 3 and the motor stator 4 are disposed in the annular space 21, and the control board drives the motor stator 4 to form a magnetic field, thereby driving the motor rotor 3 and the impeller 6 to rotate. The motor rotor 3 is mounted in the annular space 21 by means of a spindle 7, which spindle 7 is also connected to the impeller 6.
In this embodiment, the pump cover 5 comprises a number of fin rings 51, which fin rings 51 are arranged in the annular space 21 and divide part of the annular space 21 into a number of cooling chambers 22. The cooling cavity 22 is in a semi-closed structure, and an opening end of the cooling cavity 22 is arranged at one side facing the pumping chamber 11 so as to be communicated with the pumping chamber 11.
In this embodiment, the fin ring 51 is disposed along the circumferential direction of the annular space 21, the fin ring 51 includes an annular portion 511 and a sheet portion 512, the annular portion 511 is disposed inside the annular space 21 along the circumferential direction of the annular space 21, and the sheet portion 512 is disposed between the annular portion 511 and the pump cover 5 parallel to the pump shaft direction of the electronic water pump, so as to reduce the manufacturing difficulty of the electronic water pump and reduce the production cost.
In the present embodiment, the number of the plate-shaped portions 512 is 16, the radial thickness of the cooling cavity 22 is 0.1 times of the outer diameter of the motor stator, and the depth of the cooling cavity is 0.2 times of the outer diameter of the motor stator, so as to ensure that the cooling cavity has high cooling efficiency. Indeed, in other embodiments, the number, the arrangement direction, the thickness and the depth of the fin rings can be selected according to practical situations, and the arrangement proposed by the present invention is that the inventor has excellent cooling performance through a plurality of design experiment results, and meanwhile, the manufacturing cost is low.
In this embodiment, the electronic water pump with the active cooling channel further includes a shaft seal 8 and a shaft coupling 9, the shaft seal 8 and the shaft coupling 9 are disposed on two sides of the spindle 7, the shaft seal 8 is disposed near the impeller 6 relative to the shaft coupling 9, and the shaft seal 8 is connected to the pump cover 5 to seal one end of the annular space 21.
In this embodiment, the pump cover 5 and the fin ring 51 are made of metal or composite material with high heat conductivity, preferably aluminum, so as to ensure that the cooling cavity 22 can greatly reduce the heat generated by the motor; the outer housing 2 is selected from a metal or composite material with a low coefficient of thermal conductivity, preferably polyphenylene sulfide or polycarbonate, to achieve thermal isolation of the motor from the outside.
In this embodiment, the electronic water pump with an active cooling channel further includes an electric room (not shown), and the control board is disposed in the electric room.
Referring to fig. 3, when the electronic water pump is operated, an annular water flow 12 is formed in the pump housing 1, the annular water flow 12 forms a fluid vortex 13 in the cooling cavity 22, and the heat generated by the motor stator 3 heats the water in the cooling cavity 22 to generate natural heat convection, and the convection further promotes the vortex 13, so that the heat is exchanged with the liquid in the pump to realize the heat dissipation effect.
To sum up: according to the electronic water pump with the active cooling channel, the cooling cavity communicated with the water pumping chamber is arranged, the temperature of the motor stator shell is taken away by the cooling liquid in a mode of combining water flow in the pump with natural heat convection, no extra energy consumption equipment is needed, and the temperature of the motor stator and the motor rotor can be lower than the temperature of the external environment due to the adoption of a liquid cooling design, so that the motor is ensured to work in an optimal state.
In addition, the double-layer shell design adopted by the electronic water pump with the active cooling channel ensures that the heat radiation of the motor can not be directly emitted to the external environment, thereby avoiding the influence on other power elements. The whole design has simple structure, no need of special materials and technology, high manufacturability and low realization cost.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (8)

1. The electronic water pump with the active cooling channel is characterized by comprising a cylindrical pump shell, an outer shell, a motor stator, a motor rotor, a control board, a pump cover and an impeller, wherein the pump shell and the pump cover are connected to form a closed pump water chamber; the control panel drive motor stator forms the magnetic field, drives motor rotor and impeller rotation, the pump cover includes a plurality of fin rings, the fin ring sets up in the annular space and with some the annular space is cut apart into a plurality of cooling chamber, the fin ring is followed the circumferencial direction of annular space sets up, the fin ring includes annular portion and slice form portion, annular portion is followed the circumferencial direction setting of annular space is in the annular space is inboard, slice form portion is on a parallel with the pump shaft direction setting of electronic water pump is in between annular portion and the pump cover.
2. The electronic water pump with an active cooling channel as claimed in claim 1, wherein the cooling cavity has a semi-closed structure, and an opening end of the cooling cavity is disposed at a side facing the pumping chamber to communicate with the pumping chamber.
3. The electronic water pump with active cooling channels of claim 1, wherein the radial thickness of the cooling cavity is 0.1 times the outer diameter of the motor stator and the depth of the cooling cavity is 0.2 times the outer diameter of the motor stator.
4. The electronic water pump with active cooling channels of claim 1, wherein the pump cover is a metal or composite material with a high thermal conductivity.
5. The electronic water pump with active cooling channels of claim 1, wherein the outer housing is selected from a metal or composite material having a low thermal conductivity.
6. The electronic water pump with active cooling channels of claim 1, wherein the motor rotor is mounted in the annular space by a spindle that is also connected to the impeller.
7. The electronic water pump with active cooling channels of claim 6, further comprising a shaft seal and a shaft coupling bearing disposed on both sides of the mandrel, the shaft seal being disposed adjacent to the impeller relative to the shaft coupling, and the shaft seal being coupled to the pump cover to seal one end of the annular space.
8. The electronic water pump with active cooling channels of claim 1, further comprising an electrical chamber, wherein the control board is disposed within the electrical chamber.
CN201810227035.7A 2018-03-20 2018-03-20 Electronic water pump with active cooling channel Active CN108167200B (en)

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CN201810227035.7A CN108167200B (en) 2018-03-20 2018-03-20 Electronic water pump with active cooling channel

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Application Number Priority Date Filing Date Title
CN201810227035.7A CN108167200B (en) 2018-03-20 2018-03-20 Electronic water pump with active cooling channel

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CN108167200A CN108167200A (en) 2018-06-15
CN108167200B true CN108167200B (en) 2024-02-27

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110374836B (en) * 2019-06-12 2021-04-20 同济大学 Constant temperature electronic water pump
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
CN110319027B (en) * 2019-08-09 2024-05-28 苏州玲珑汽车科技有限公司 Automobile electronic water pump with cooling flow channel and installed on side face of controller and automobile
CN110805561B (en) * 2019-10-28 2022-01-25 河北深海电器有限公司 Pump and hydrogen energy battery automobile
CN113898612A (en) * 2020-07-06 2022-01-07 江门市甜的电器有限公司 Miniature centrifugal canned motor pump

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CN202851381U (en) * 2012-10-23 2013-04-03 河北深海电器有限公司 Direct current brushless magnetic force water pump
JP2014013002A (en) * 2012-07-04 2014-01-23 Je-Ee Industry Co Ltd Fluid pump
CN104675711A (en) * 2015-02-12 2015-06-03 常州市凯程精密汽车部件有限公司 Electronic water pump
CN105443400A (en) * 2016-01-26 2016-03-30 河北深海电器有限公司 Electronic water pump
CN107237759A (en) * 2017-07-18 2017-10-10 广东威灵电机制造有限公司 Electronic water pump
CN207960970U (en) * 2018-03-20 2018-10-12 苏州玲珑汽车科技有限公司 Electronic water pump with active cooling channel

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Publication number Priority date Publication date Assignee Title
KR101332853B1 (en) * 2013-05-09 2013-11-27 엔엔엔코리아(주) Electric water pump with cooling unit for vehicles

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2014013002A (en) * 2012-07-04 2014-01-23 Je-Ee Industry Co Ltd Fluid pump
CN202851381U (en) * 2012-10-23 2013-04-03 河北深海电器有限公司 Direct current brushless magnetic force water pump
CN104675711A (en) * 2015-02-12 2015-06-03 常州市凯程精密汽车部件有限公司 Electronic water pump
CN105443400A (en) * 2016-01-26 2016-03-30 河北深海电器有限公司 Electronic water pump
CN107237759A (en) * 2017-07-18 2017-10-10 广东威灵电机制造有限公司 Electronic water pump
CN207960970U (en) * 2018-03-20 2018-10-12 苏州玲珑汽车科技有限公司 Electronic water pump with active cooling channel

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Effective date of registration: 20180620

Address after: 215000 6-901-87 unit, creative industry park, 328 Xing Hu Street, Suzhou Industrial Park, Suzhou, Jiangsu.

Applicant after: SUZHOU LINGLONG AUTOMOBILE TECHNOLOGY Co.,Ltd.

Address before: 215000 Hyde Park, 6, 1703, Hyde Park, Jiangsu.

Applicant before: Zheng Xu

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