CN214788043U - Stator assembly of electronic water pump - Google Patents
Stator assembly of electronic water pump Download PDFInfo
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- CN214788043U CN214788043U CN202121233464.9U CN202121233464U CN214788043U CN 214788043 U CN214788043 U CN 214788043U CN 202121233464 U CN202121233464 U CN 202121233464U CN 214788043 U CN214788043 U CN 214788043U
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- heat dissipation
- water pump
- rotor assembly
- cavity
- installation cavity
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Abstract
The utility model discloses a stator assembly of an electronic water pump, which comprises a casing and a stator assembly, wherein the casing is a plastic casing, the stator assembly is wrapped by the plastic casing, a rotor assembly installation cavity is also arranged in the casing, and a mandrel for installing a water pump impeller is embedded in the bottom part in the rotor assembly installation cavity; the upper end of the plastic casing is also provided with a lower flange part matched with an upper cover of the electronic water pump, and the lower flange part is positioned around an upper opening of the rotor assembly mounting cavity; and a fluid heat dissipation cavity communicated with the rotor assembly installation cavity is arranged between the heat dissipation plate and the cavity bottom of the rotor assembly installation cavity. The cooling liquid flows through the heat dissipation plate through the fluid heat dissipation chamber and takes away heat on the heat dissipation plate, so that cooling of the stator assembly and the circuit board is achieved, heat dissipation efficiency is high, and conditions are provided for achieving large-power water pumps.
Description
Technical Field
The utility model belongs to the technical field of the electronic water pump, especially, relate to a stator assembly of electronic water pump.
Background
At present, the electronic water pump casing and the circuit board thereon dissipate heat: the cooling is realized through the flow of the radiating fins and the gas arranged on the casing, because the electronic water pump is arranged in the engine cabin and the ambient temperature in the engine cabin is high, the radiating efficiency of the water pump in the work is low, meanwhile, because the circuit board has the temperature protection function, when the temperature exceeds a certain temperature, the water pump stops working, the running of a vehicle has great potential safety hazard, and in addition, the electronic water pump is limited by the problems and cannot be used as a high-power (100W and above) water pump.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electronic pump's stator assembly to reach the purpose that improves the radiating efficiency, can do high-power water pump.
In order to solve the technical problem, the technical scheme of the utility model is that: a stator assembly of an electronic water pump comprises a shell and a stator assembly, wherein the shell is a plastic shell, the plastic shell covers the stator assembly, a rotor assembly installation cavity is further arranged in the shell, and a mandrel for installing a water pump impeller is embedded in the bottom in the rotor assembly installation cavity; the upper end of the plastic casing is also provided with a lower flange part matched with an upper cover of the electronic water pump, and the lower flange part is positioned around an upper opening of the rotor assembly mounting cavity;
and a fluid heat dissipation cavity communicated with the rotor assembly installation cavity is arranged between the heat dissipation plate and the cavity bottom of the rotor assembly installation cavity.
As a preferable scheme, the fluid heat dissipation chamber includes a fluid flow groove disposed on the heat dissipation plate or on the plastic housing, a plurality of through holes are disposed on a cavity bottom of the rotor assembly mounting cavity, and the through holes are communicated with the fluid flow groove and the rotor assembly mounting cavity.
Preferably, the heat dissipation plate includes a plate body fixedly mounted on the plastic housing, a plug-in sleeve is convexly disposed on one side of the plate body, and the fluid flow groove is formed inside the plug-in sleeve.
Preferably, a positioning step and a sealing step are arranged in the insertion sleeve.
As a preferable scheme, an installation cavity is arranged on the machine shell below the installation cavity of the rotor assembly, and the heat dissipation plate is located in the installation cavity.
Preferably, the heat dissipation plate is a metal heat dissipation plate.
As a preferred scheme, the lower flange part comprises an outwardly protruding flange plate part, an annular caulking groove for facilitating the buckling of the upper cover is formed in the flange plate part, an area, located on the inner side of the annular caulking groove, of the flange plate part protrudes upwards and is higher than the annular caulking groove, and a sunk groove concentric with the rotor assembly installation cavity is formed in the upper surface of the flange plate part.
After the technical scheme is adopted, the utility model discloses an effect is:
the stator assembly of the electronic water pump comprises a shell and a stator assembly, wherein the shell is a plastic shell, the plastic shell covers the stator assembly, a rotor assembly installation cavity is further arranged in the shell, and a mandrel for installing a water pump impeller is embedded in the bottom in the rotor assembly installation cavity; the upper end of the plastic casing is also provided with a lower flange part matched with an upper cover of the electronic water pump, and the lower flange part is positioned around an upper opening of the rotor assembly mounting cavity; based on the structure, the stator assembly of the electronic water pump is used, the rotor assembly is installed through the rotor assembly installation cavity, the impeller drives cooling fluid such as cooling liquid to circularly flow during the operation of the water pump, and due to the existence of the fluid heat dissipation cavity, the cooling liquid driven by the impeller enters the fluid heat dissipation cavity from the rotor assembly installation cavity (in the design, the circuit board is installed on the heat dissipation plate) so as to take away the heat on the heat dissipation plate, and as the heat dissipation plate is in contact with the plastic shell in a bonding way and the circuit board is arranged on the heat dissipation plate, the temperature of the whole stator assembly and the circuit board is reduced by a heat exchange principle, compared with the traditional air heat conduction, the whole stator assembly is coated by the plastic shell, so that the heat conduction efficiency is greatly improved, good conditions are provided for realizing a high-power water pump, and the problems of stopping the water pump and great potential safety hazard in vehicle running caused by overhigh temperature are solved; through the integrated shell and stator assembly structure and the fluid heat dissipation chamber, heat exchange is facilitated to be carried out quickly, and quick heat dissipation is also facilitated.
Because the fluid heat dissipation cavity is including setting up in on the heating panel or set up in fluid flow groove on the plastics casing, be equipped with a plurality of through-holes on the chamber end of rotor assembly installation cavity, the through-hole all with fluid flow groove with rotor assembly installation cavity intercommunication. Thereby through the intercommunication cooperation of fluid flow groove and through-hole, realize the intercommunication each other of heating panel and rotor assembly installation cavity, simple structure, manufacturing is convenient, and intercommunication and radiating effect are good.
The heat dissipation plate comprises a plate body fixedly mounted on the plastic casing, a plug-in sleeve is convexly arranged on one side of the plate body, and the fluid flowing groove is formed inside the plug-in sleeve. The scheme has the advantages of simple structure and convenience in molding, and meanwhile, the cartridge sleeve conveniently forms a fluid flowing groove and is also conveniently matched with the plastic casing.
Because the plug-in sleeve is internally provided with the positioning step and the sealing step, a condition is provided for positioning and sealing between the plug-in sleeve and the cavity bottom of the rotor assembly installation cavity.
Because be located rotor assembly installation cavity below be equipped with the installation cavity on the casing, the heating panel is located the installation cavity to the structure is compacter, not only is favorable to reducing the volume of water pump, and the installation of the water pump fin of being convenient for simultaneously, and heating panel and water pump fin do not influence each other.
Because flange portion includes the flange board that the outside is protruding to be stretched, is provided with the annular caulking groove that makes things convenient for the upper cover to detain on this flange board, the region that lies in the annular caulking groove inboard on the flange board is protruding to stretch and is higher than the annular caulking groove, the upper surface of flange board is provided with the heavy groove with the rotor assembly installation cavity is endocentric, consequently, this lower flange portion not only makes things convenient for the upper cover to detain sealed cooperation, makes things convenient for and forms the rivers passageway of electronic pump with the upper cover in addition, and the heavy groove also makes things convenient for electronic pump's impeller to install.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the heat sink of fig. 1;
FIG. 3 is a cross-sectional view of the electric water pump after the stator assembly is used;
FIG. 4 is a perspective view of the bottom of the stator assembly;
wherein, 1-a machine shell; 101-a bolt mounting platform; 102-a positioning column; 2-rotor assembly installation cavity; 201-a through hole; 3-fabrication holes; 4-a stator assembly; 401-stator pins; 5-lower flange portion; 51-annular caulking groove; 52-sink tank; 6-mandrel; 7-a heat sink; 701-fluid flow cell; 702-a plate body; 703-inserting a sleeve; 704-positioning a step; 705-sealing step; 8-mounting a cavity; 9-sealing ring; 10-upper cover; 11-impeller.
Detailed Description
The present invention will be described in further detail with reference to the following examples.
As shown in fig. 1 to 4, a stator assembly of an electronic water pump includes a casing 1 and a stator assembly 4, wherein the casing 1 is a plastic casing, the plastic casing 1 covers the stator assembly, the plastic casing 1 and the stator assembly 4 are integrally formed by an injection molding process, and a process hole 3 left by injection molding is left between the casing 1 and the stator assembly 4; a rotor assembly installation cavity 5 is further arranged in the machine shell 1, a core shaft 6 is integrally formed on the bottom of the rotor assembly installation cavity 5 of the machine shell 1, and the core shaft 6 is used as a rotation center support of the whole rotor; the upper end of the plastic casing 1 is also provided with a lower flange part 5 matched with an upper cover 10 of the electronic water pump, and the lower flange part 5 is positioned around the upper opening of the rotor assembly mounting cavity 2;
and a heat dissipation plate 7 is arranged below the machine shell 1, and a fluid heat dissipation cavity communicated with the rotor assembly installation cavity 2 is arranged between the heat dissipation plate 7 and the cavity bottom of the rotor assembly installation cavity 2.
The fluid heat dissipation chamber comprises a fluid flow groove 701 arranged on the heat dissipation plate 7, the bottom of the rotor assembly installation cavity 2 is provided with a plurality of through holes 201, and the through holes 201 are communicated with the fluid flow groove 701 and the rotor assembly installation cavity 5; in this embodiment, the heat sink 7 includes a plate body 702 fixedly installed below the rotor assembly installation cavity 2, an insertion sleeve 703 is protrudingly provided on one side of the plate body 702, and a fluid flow groove 701 is formed inside the insertion sleeve 703. Of course, the fluid flowing groove 701 may also be directly disposed at the bottom of the plastic casing 1, in which case, the heat dissipation plate 7 is directly fixed at the bottom and the fluid flowing groove 701 is covered to form a fluid heat dissipation chamber.
Preferably, a positioning step 704 and a sealing step 705 which extend annularly are arranged in the insertion sleeve 703, the positioning step 704 is abutted against the bottom of the rotor assembly mounting cavity 2, and a sealing ring 9 which is positioned between the insertion sleeve 703 and the bottom of the rotor assembly mounting cavity 2 is positioned on the sealing step 705; the shell 1 below the rotor assembly installation cavity 2 is provided with an installation cavity 8, the process hole 3 is communicated with the installation cavity 8, and the heat dissipation plate 7 is positioned in the installation cavity 8; the machine shell 1 and the rotor assembly installation cavity 2 are injection-molded parts integrally formed by plastic materials; the heat sink 7 is a metal heat sink, and in this embodiment, the heat sink is an aluminum heat sink.
And the lower flange part 5 comprises a flange plate part protruding outwards, an annular embedded groove 51 facilitating the buckling of the upper cover is arranged on the flange plate part, as shown in fig. 3, the edge of the upper cover is arranged in the annular embedded groove 51, and a sealing ring is arranged between the upper cover and the annular embedded groove to seal each other, so that liquid leakage is avoided. And the area of the flange part, which is positioned at the inner side of the annular caulking groove 51, protrudes upwards and is higher than the annular caulking groove 51, and the upper surface of the flange part is provided with a sinking groove 52 which is concentric with the rotor assembly mounting cavity 2, so that the lower flange part 5 not only facilitates the buckling and sealing matching of the upper cover, but also facilitates the formation of a water flow channel of the electronic water pump with the upper cover, and the sinking groove also facilitates the installation of the impeller 11 of the electronic water pump.
As shown in fig. 4, the lower end of the integrally molded stator assembly is provided with a positioning column and a bolt mounting platform, wherein the positioning column is used for mounting the heat sink and is also convenient for positioning the circuit board, and the bolt mounting platform is convenient for fixing the heat sink 7 by bolts. The stator pins 41 of the stator assembly 4 penetrate the heat dissipation plate 7 and are then welded and fixed to the circuit board.
The above-mentioned embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all modifications and changes made by the technical solution of the present invention should fall within the protection scope defined by the claims of the present invention on the basis of not departing from the spirit of the present invention.
Claims (7)
1. The utility model provides an electronic water pump's stator assembly, includes casing and stator module, its characterized in that: the shell is a plastic shell, the plastic shell covers the stator assembly, a rotor assembly installation cavity is further arranged in the shell, and a mandrel for installing a water pump impeller is embedded in the bottom in the rotor assembly installation cavity; the upper end of the plastic casing is also provided with a lower flange part matched with an upper cover of the electronic water pump, and the lower flange part is positioned around an upper opening of the rotor assembly mounting cavity;
and a fluid heat dissipation cavity communicated with the rotor assembly installation cavity is arranged between the heat dissipation plate and the cavity bottom of the rotor assembly installation cavity.
2. The stator assembly of the electric water pump as claimed in claim 1, wherein: the fluid heat dissipation cavity comprises a fluid flow groove arranged on the heat dissipation plate or on the plastic casing, a plurality of through holes are arranged at the bottom of the rotor assembly installation cavity, and the through holes are communicated with the fluid flow groove and the rotor assembly installation cavity.
3. The stator assembly of the electric water pump as claimed in claim 2, wherein: the heat dissipation plate comprises a plate body fixedly installed on the plastic casing, a plug-in sleeve is arranged on one side of the plate body in a protruding mode, and the fluid flowing groove is formed inside the plug-in sleeve.
4. The stator assembly of the electric water pump as claimed in claim 3, wherein: and a positioning step and a sealing step are arranged in the insertion sleeve.
5. The stator assembly of the electric water pump as claimed in claim 4, wherein: and the shell is positioned below the rotor assembly mounting cavity and is provided with a mounting cavity, and the heat dissipation plate is positioned in the mounting cavity.
6. The stator assembly of an electronic water pump according to any one of claims 1 to 5, wherein: the heat dissipation plate is a metal heat dissipation plate.
7. The stator assembly of the electric water pump as claimed in claim 6, wherein: the lower flange part comprises a flange plate part protruding outwards, an annular caulking groove facilitating buckling of the upper cover is formed in the flange plate part, the area, located on the inner side of the annular caulking groove, of the flange plate part protrudes upwards and is higher than the annular caulking groove, and a sunk groove concentric with the rotor assembly installation cavity is formed in the upper surface of the flange plate part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121233464.9U CN214788043U (en) | 2021-06-03 | 2021-06-03 | Stator assembly of electronic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121233464.9U CN214788043U (en) | 2021-06-03 | 2021-06-03 | Stator assembly of electronic water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788043U true CN214788043U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121233464.9U Active CN214788043U (en) | 2021-06-03 | 2021-06-03 | Stator assembly of electronic water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214788043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704474A (en) * | 2022-04-18 | 2022-07-05 | 四川芯智热控技术有限公司 | New forms of energy water pump of easily assembling |
| CN114704502A (en) * | 2022-04-18 | 2022-07-05 | 四川芯智热控技术有限公司 | Heat radiation structure suitable for automotive electronics water pump and automotive electronics water pump containing same |
-
2021
- 2021-06-03 CN CN202121233464.9U patent/CN214788043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704474A (en) * | 2022-04-18 | 2022-07-05 | 四川芯智热控技术有限公司 | New forms of energy water pump of easily assembling |
| CN114704502A (en) * | 2022-04-18 | 2022-07-05 | 四川芯智热控技术有限公司 | Heat radiation structure suitable for automotive electronics water pump and automotive electronics water pump containing same |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 8, Xinfeng Hexi Road, Tangshi, Yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province 215600 Patentee after: Jiangsu Langxin Electric Co.,Ltd. Address before: 215600 2 Fuxin Road, Yang Shi Town, Zhangjiagang, Suzhou, Jiangsu Patentee before: JIANGSU LANGXIN ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |