CN216599305U - Motor and electric water pump of pump sending coolant liquid structure can communicate to utensil - Google Patents
Motor and electric water pump of pump sending coolant liquid structure can communicate to utensil Download PDFInfo
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- CN216599305U CN216599305U CN202122637119.8U CN202122637119U CN216599305U CN 216599305 U CN216599305 U CN 216599305U CN 202122637119 U CN202122637119 U CN 202122637119U CN 216599305 U CN216599305 U CN 216599305U
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Abstract
The utility model provides a motor and electric water pump that utensil can communicate pump sending coolant liquid structure, including casing, stator and rotor, the casing is the metal column body, its central through hole forms and holds the chamber, it has the clearance to form the first cooling channel that both ends can communicate the coolant liquid to hold between the annular chamber wall in chamber and the columnar periphery wall, it is separated by the water proof cover that is located its center and the first end cover at both ends, the second end cover forms the stator chamber that the outside is sealed, the rotor chamber that both ends can communicate the coolant liquid in the inboard, and place the outer wall of the iron core of the stator in stator chamber and the heat conduction contact of annular chamber wall. The problem that the motor or the electric water pump is burnt out or does not work due to overheating caused by overlarge heat productivity is solved.
Description
Technical Field
The utility model relates to a motor with a structure capable of being communicated with cooling liquid, in particular to an electric water pump applying the motor with the structure capable of being communicated with the cooling liquid, wherein the IPC classification number of the electric water pump is H02K 5/20.
Background
The existing motor with a heat dissipation structure has two types of heat dissipation structures: one is that the outer side of the shell is provided with radiating fins, and the radiating fins radiate heat in a natural convection mode with the external environment; the other is that a circulating cooling liquid channel is arranged on the motor shell, and heat dissipation is carried out through the circulating cooling liquid. When the motor is applied to driving the cooling liquid, the heat dissipation efficiency of the motor can be further improved.
Disclosure of Invention
In order to solve the above problems, the present invention provides the following technical solutions:
the utility model provides a motor that utensil can communicate pump sending coolant liquid structure, includes casing, stator and rotor which characterized in that: the casing is a metal column, a containing cavity is formed by a central through hole of the casing, a gap is formed between the annular cavity wall of the containing cavity and the columnar peripheral wall to form a first cooling channel, two ends of the first cooling channel can be communicated with cooling liquid, the containing cavity is separated by a water separating sleeve positioned in the center of the containing cavity, a first end cover and a second end cover positioned at two ends of the containing cavity to form a stator cavity with sealed outer sides and a rotor cavity with two inner sides and two ends capable of being communicated with the cooling liquid, and the outer wall of an iron core of a stator placed in the stator cavity is in heat conduction contact with the annular cavity wall.
The motor with the structure capable of communicating with pumped cooling liquid is characterized in that a first cooling channel is arranged on the radial outer side of the containing cavity of the shell, a closed stator cavity for dividing the containing cavity into a rotor cavity and preventing the cooling liquid from entering the containing cavity is arranged in the containing cavity of the shell, the liquid can enter the rotor cavity and the first cooling channel to respectively dissipate heat of the rotor and the stator, and the problem that the motor is burnt out or overheated and does not work due to overlarge heat productivity is solved.
Further, the water-separating sleeve and the first end cover or the second end cover are integrally formed by injection molding.
Furthermore, the cylindrical outer surface of the casing is radially provided with a heat radiating fin in a protruding mode.
The utility model also provides an electric water pump:
an electric water pump comprises a motor with a structure capable of communicating with a pumped cooling liquid, an impeller arranged on a rotor, a pump cover arranged on a first end cover, a circuit board and a heat conduction cover arranged in an inner cavity of a second end cover, wherein the inner cavity is axially separated into a second cooling channel and an electrical appliance cavity for installing the circuit board by the heat conduction cover, the pump cover and the first end cover are combined to form an impeller cavity for accommodating the impeller, a central through hole for communicating the impeller cavity and the rotor cavity is formed in the position, close to an axis, of the first end cover, a side through hole for communicating the impeller cavity with the first cooling channel is formed in the position, far away from the axis, of the second end cover, a first through hole for communicating the rotor cavity with the second cooling channel is formed in the position, far away from the axis, and a second through hole for communicating the first cooling channel with the second cooling channel is formed in the position.
According to the electric water pump, the second end cover divides the inner cavity of the second end cover into the second cooling channel and the electric appliance cavity for mounting the circuit board by the heat conduction pipe, water in the impeller cavity sequentially flows into the first cooling channel, the second cooling channel and the rotor cavity to respectively carry out liquid cooling heat dissipation on the stator, the circuit board and the rotor.
Furthermore, the heat conduction cover is made of metal, heat conduction fins are arranged on the axial upper end face of the heat conduction cover, and the circuit board is installed at one end, back to the heat conduction fins, of the heat conduction cover.
Furthermore, the first end cover is axially downwards concave to form an accommodating groove for accommodating the impeller, a spiral flow passage surrounded by a convex rib is arranged on the outer side of the accommodating groove, the impeller comprises an impeller disc, and an axial impeller disc through hole is formed in the impeller disc.
Furthermore, the side through hole is arranged on the outer side of the spiral flow passage, and the convex rib is provided with a flow passing groove which passes through the spiral flow passage to the outer side of the spiral flow passage.
Furthermore, the electric water pump also comprises a mounting plate arranged between the machine shell and the first end cover, and the mounting plate is provided with a through hole which is used for communicating the impeller cavity with the first cooling channel and the rotor cavity respectively.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of an electric machine having a structure for communicating pumped cooling fluid in accordance with the present invention;
FIG. 2 is a schematic perspective view of a metal housing according to the present invention;
FIG. 3 is a cross-sectional view of a second embodiment of the electric machine with a structure for communicating pumped cooling fluid according to the present invention;
FIG. 4 is a cross-sectional view of a first embodiment of the electric water pump of the present invention;
FIG. 5 is a schematic perspective view of a heat conductive cover according to the present invention;
FIG. 6 is a schematic perspective view of a first end cap according to the present invention
FIG. 7 is a perspective view of a second end cap of the present invention;
FIG. 8 is a cross-sectional view of a second embodiment of the electric water pump of the present invention;
FIG. 9 is a cross-sectional view of a third embodiment of the electric water pump of the present invention;
FIG. 10 is a schematic perspective view of the mounting plate of the present invention;
wherein: 10-impeller cavity, 20-stator cavity, 30-rotor cavity, 40-second cooling channel, 50-electrical appliance cavity, 100-metal casing, 110-containing cavity, 120-first cooling channel, 130-radiating fin, 200-first end cover, 200' -first end cover, 210-containing groove, 220-spiral flow channel, 230-side through hole, 222-convex rib, 223-overflow groove, 240-axial end face, 250-central through hole, 280-mounting plate, 281-mounting plate first through hole, 282-mounting plate second through hole, 300-second end cover, 310-first through hole, 320-second through hole, 350-internal cavity, 351-step end face, 400-stator, 410-iron core, 411-iron core outer wall, 500-rotor, 510-impeller, 511-impeller disc, 512-impeller disc through hole, 513-blade, 600-pump cover, 700-circuit board, 800-heat conducting cover, 810-heat conducting fin, 900-water separating sleeve, 900' -water separating sleeve, 910-first sealing ring, 920-second sealing ring, 930-third sealing ring, 940-fourth sealing ring
Detailed Description
Referring to fig. 1 and 2, the present invention provides an electric machine having a structure capable of communicating with a pumped cooling liquid, comprising: the stator comprises a casing 100, a first end cover 200 arranged at one axial end of the casing 100, a second end cover 300 arranged at the other axial end of the metal casing 100, a stator 400, a rotor 500 and a water stop sleeve 900. The casing 100 is a metal column, a through hole in the center of the casing forms an accommodating cavity 110, and a gap is formed between an annular cavity wall 111 of the accommodating cavity 110 and a column-shaped outer peripheral wall 112 to form a first cooling channel 120, two ends of which can be communicated with cooling liquid. The stator 400 includes a core 410 and a coil winding (not shown), and the rotor 500 includes a rotating shaft and a magnetic core fixedly coupled to the rotating shaft. The water blocking sleeve 900 is tubular, is disposed in the accommodating cavity 110 of the casing 100, and divides the accommodating cavity 110 with the first and second end covers 200 and 300 disposed at both axial ends of the casing 100 to enclose the stator cavity 20 and the rotor cavity 30. During assembly, a first sealing ring 910 is arranged between the casing 100 and the first end cover 200, a second sealing ring 920 is arranged between the casing 100 and the second end cover 300, and a third sealing ring 930 is arranged between the water-separating jacket 900 and the first end cover 200 and the second end cover 300 respectively, so that the stator cavity 20 forms a closed cavity for preventing cooling liquid from entering the interior of the stator cavity after the assembly. The rotor 500 is rotatably mounted in the rotor chamber 30 and the stator 400 is mounted in the stator chamber 20. In the installed state, the core outer wall 411 of the rotor core 410 is in heat-conducting contact with the annular cavity wall 111 of the receiving cavity. The heat conduction contact in this embodiment means that the core outer wall 411 directly contacts the annular cavity wall 111 or the core outer wall 411 is in heat conduction contact with the annular cavity wall 111 through a heat conducting medium.
The motor with the structure capable of communicating with pumped cooling liquid is characterized in that a first cooling channel is arranged on the radial outer side of the containing cavity of the shell, a closed stator cavity for dividing the containing cavity into a rotor cavity and preventing the cooling liquid from entering the containing cavity is arranged in the containing cavity of the shell, the liquid can enter the rotor cavity and the first cooling channel to respectively dissipate heat of the rotor and the stator, and the problem that the motor is burnt out or overheated and does not work due to overlarge heat productivity is solved.
Referring to fig. 2, the casing 100 of the present invention is a hollow cylindrical metal casing, and the outer surface of the cylinder is protruded with heat dissipation fins 130 in a radial direction, so that the heat dissipation efficiency of the motor can be further improved. Because the casing 100 is a hollow cylindrical structure, preferably, a metal material is used for extrusion molding (such as extrusion molding of an aluminum alloy material), compared with a casing cast by metal, the manufacturing method avoids the defects of cracks, air holes, shrinkage cavities, uneven wall thickness and the like in the casting molding process, and is beneficial to improving the product material utilization rate and the finished product qualification rate of the casing.
Fig. 3 is a cross-sectional view of a second embodiment of the motor with a structure for communicating and pumping a cooling liquid according to the present invention, which is distinguished from the motor with a structure for communicating and pumping a cooling liquid according to the above embodiment by a connection structure of a first end cover and a water separation sleeve. In this embodiment, the first end cap 200 'and the water partition sleeve 900' are integrally formed by injection molding. This design reduces the connection of water separating sleeve and first end cover or second end cover when doing benefit to the installation, reduces the risk of leaking the coolant liquid. Of course, in other embodiments, the water stop sleeve 900 may be injection molded with the second end cap 300.
The utility model also discloses an electric water pump using the motor with the structure capable of communicating with the pumped cooling liquid.
The first embodiment is as follows:
referring to fig. 4, the present invention discloses an electric water pump, which includes the above-mentioned motor with a structure capable of communicating and pumping cooling liquid, an impeller 510 mounted on a rotor 500, a pump cover 600, a circuit board 700 and a heat conducting cover 800. The pump cover 600 is covered on the first end cover 200, and forms an impeller chamber 10 with a space between the first pump cover 200, and the impeller 510 is installed in the impeller chamber 10. Referring to fig. 4 and 7, the second end cap 300 has a basin shape having an inner cavity 350 stepped down in axial section. The heat conductive cover 800 is mounted on the stepped end surface 351 of the inner cavity 350 of the second end cap 300 and axially partitions the inner cavity 350 into the second cooling channel 40 near the rotor 500 and the appliance cavity 50 far from the rotor 500, and the circuit board 700 is mounted on the appliance cavity 50. Referring to fig. 4, 6 and 7, the first end cap 200 is provided with a central through hole 250 close to the axis and side through holes 230 far from the axis, and the second end cap 300 is provided with a first through hole 310 close to the axis and a second through hole 320 far from the axis, the central through hole 250 communicating the impeller cavity 10 with the rotor cavity 30 and the side through holes 230 communicating the impeller cavity 10 with the first cooling channel 120 in the mounted state; the first through hole 310 communicates the rotor cavity 30 with the second cooling passage 40, and the second through hole 320 communicates the first cooling passage 120 with the second cooling passage 40. The axial line is close to the axial line, namely the radial distance from the axial line of the first end cover to the central through hole is smaller than the inner diameter of the rotor cavity, and the radial distance from the axial line of the second end cover to the first through hole is smaller than the inner diameter of the rotor cavity; by far from the axis, the radial distance from the axis of the first end cover to the side through hole is larger than the inner diameter of the rotor cavity, and the radial distance from the axis of the second end cover to the second through hole is larger than the inner diameter of the rotor cavity.
Referring to fig. 4, when the electric water pump works, the cooling liquid radiating flow path is as follows: the cooling liquid in the impeller cavity 10 enters the first cooling channel 120 through the side through hole 230 to dissipate heat of the stator, the cooling liquid in the first cooling channel 120 flows into the second cooling channel 40 through the second through hole 320 to dissipate heat of the circuit board 700, the cooling liquid in the second cooling channel 40 flows into the rotor cavity 30 through the first through hole 310 to dissipate heat of the rotor 500, and the cooling liquid in the rotor cavity 30 flows back to the impeller cavity 10 through the central through hole 250.
According to the electric water pump, the cooling liquid in the impeller cavity is introduced into the first cooling channel, the second cooling channel and the rotor cavity to respectively dissipate heat of the stator, the circuit board and the rotor, so that the heat dissipation efficiency of the electric water pump is improved, and the problem that the electric water pump is burnt out or does not work due to overheating caused by overlarge heat productivity of the electric water pump is solved.
Referring to fig. 4 and 6, the axial end face 240 of the first end cap 200 is axially recessed to form a receiving groove 210, and a spiral flow passage 220 surrounded by the ribs 222 is provided on the radially outer side of the receiving groove 210. The impeller 510 comprises an impeller disk 511 and blades 513 arranged on the impeller disk, and the impeller disk 511 is provided with an axial impeller disk through hole 512. When the electric water pump works, the cooling liquid in the rotor cavity 30 passes through the central through hole 250 and then passes through the impeller disc through holes 512 to be discharged, and the design improves the drainage efficiency of the electric water pump, reduces the impact of the cooling liquid which flows back from the rotor cavity 30 to the impeller cavity 10 on the back of the impeller 510 and improves the working stability of the electric water pump.
Further, referring to fig. 6, the side through hole 230 is formed in an axial end surface 240 of the first end cap 200 outside the spiral flow passage 220, and the rib 222 is provided with a flow passing groove 223 for passing the spiral flow passage 220 through to the outside of the spiral flow passage 220. Because the side through holes 230 are disposed at the outer side of the spiral flow channel 220, the design can reduce the resistance of the side through holes 230 to the flowing of the cooling liquid in the spiral flow channel 220, which is beneficial to improving the flow rate of the electric water pump.
Referring to fig. 5, the heat conductive cover 800 is made of a metal material, and heat conductive fins 810 are provided on an axial end surface thereof. When the heat conduction cover is installed, as shown in fig. 4, the second sealing ring 920 is disposed between the second end cover 300 and the chassis 100, the heat conduction cover 800 is installed on the stepped end surface 351 of the inner cavity 350 of the second end cover 300, the fourth sealing ring 940 is disposed between the heat conduction cover 800 and the stepped end surface 351, the heat conduction fin 810 of the heat conduction cover 800 is located in the second cooling channel 40, and the circuit board 700 is installed on an end surface of a side of the heat conduction cover 800, which faces away from the heat conduction fin 810. The structure increases the contact area between the heat-conducting cover and the cooling liquid, and improves the heat dissipation efficiency of the circuit board.
Example two:
fig. 8 is a sectional view of a second embodiment of the electric water pump of the present invention, which is different from the first embodiment in the feature of the connection structure of the first cover and the water partition. In this embodiment, the first end cap 200 'and the water partition sleeve 900' are integrally formed by injection molding. This design reduces the connection of water separating sleeve and first end cover or second end cover when doing benefit to the installation, reduces the risk of leaking the coolant liquid.
Example three:
fig. 9 is a sectional view of a third embodiment of the electric water pump according to the present invention, which is different from the first embodiment in that a mounting plate 280 is provided between the housing 100 and the first cover 200, and this design simplifies the structure of the housing, facilitating the processing of the housing and the mounting of the housing to other parts. Referring to fig. 10, the mounting plate 280 has a cylindrical shape, and has a first mounting plate through hole 281 disposed at a position close to the axis and a second mounting plate through hole 282 disposed at a position away from the axis. After installation, the coolant in the impeller cavity 10 may enter the first cooling channel 120 through the side through holes 230 and the mounting plate second through hole 282, and the coolant in the rotor cavity 30 may flow back into the impeller cavity 10 through the mounting plate first through hole 281 and the center through hole 250.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (8)
1. An electric machine with a structure capable of communicating with a pumped cooling liquid, comprising a casing (100), a stator (400) and a rotor (500), characterized in that: the casing (100) is a metal column, a central through hole of the casing forms a containing cavity (110), a gap is formed between an annular cavity wall (111) of the containing cavity (110) and a columnar outer peripheral wall (112) to form a first cooling channel (120) with two ends capable of being communicated with cooling liquid, the containing cavity (110) is separated by a water separating sleeve (900, 900 ') positioned in the center of the containing cavity, a first end cover (200, 200') and a second end cover (300) positioned at two ends to form a stator cavity (20) with sealed outer side and a rotor cavity (30) with two ends capable of being communicated with the cooling liquid, and an iron core outer wall (411) of a stator (400) placed in the stator cavity (20) is in heat conduction contact with the annular cavity wall (111).
2. The electric machine with a structure capable of communicating and pumping cooling liquid according to claim 1, wherein: the water-insulating sleeve (900 ') is formed by integral injection molding with the first end cover (200') or the second end cover.
3. The electric machine with a structure capable of communicating and pumping cooling liquid according to claim 1, wherein: the cylindrical outer surface of the casing (100) is radially protruded with radiating fins (130).
4. An electric water pump comprising a motor with a structure capable of communicating with a pumped cooling liquid, an impeller (510) installed on a rotor (500), a pump cover (600) covered on a first end cover (200), a circuit board (700), and a heat conducting cover (800) arranged in a cavity (350) inside a second end cover (300) as claimed in any one of claims 1 to 3, characterized in that: the heat conduction cover (800) axially separates an inner cavity (350) into a second cooling channel (40) and an electrical appliance cavity (50) of an installation circuit board (700), the pump cover (600) and the first end cover (200) are covered to form an impeller cavity (10) for accommodating an impeller (510), a central through hole (250) for communicating the impeller cavity (10) with a rotor cavity (30) is formed in the position, close to an axis, of the first end cover (200), a side through hole (230) for communicating the impeller cavity (10) with the first cooling channel (120) is formed in the position, far away from the axis, of the second end cover (300), a first through hole (310) for communicating the rotor cavity (30) with the second cooling channel (40) is formed in the position, close to the axis, of the second end cover (300), and a second through hole (320) for communicating the first cooling channel (120) with the second cooling channel (40) is formed in the position, far away from the axis.
5. The electric water pump of claim 4, wherein: the heat conduction cover (800) is made of metal, heat conduction fins (810) are arranged on the axial end face of the heat conduction cover, and the circuit board (700) is installed on one side, back to the heat conduction fins (810), of the heat conduction cover (800).
6. The electric water pump of claim 4, wherein: the first end cover (200) is axially recessed to form an accommodating groove (210) for accommodating the impeller (510), a spiral flow passage (220) surrounded by a convex rib (222) is arranged on the outer side of the accommodating groove (210), the impeller (510) comprises an impeller disc (511), and an axial impeller disc through hole (512) is formed in the impeller disc (511).
7. The electric water pump of claim 6, wherein: the side through hole (230) is arranged on the outer side of the spiral flow channel (220), and the convex rib (222) is provided with a flow passing groove (223) which enables the spiral flow channel (220) to pass through to the outer side of the spiral flow channel (220).
8. The electric water pump of claim 4, wherein: the impeller structure further comprises a mounting plate (280) arranged between the machine shell (100) and the first end cover (200), and through holes for communicating the impeller cavity (10) with the first cooling channel (120) and the rotor cavity (30) are formed in the mounting plate (280).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122637119.8U CN216599305U (en) | 2021-10-29 | 2021-10-29 | Motor and electric water pump of pump sending coolant liquid structure can communicate to utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122637119.8U CN216599305U (en) | 2021-10-29 | 2021-10-29 | Motor and electric water pump of pump sending coolant liquid structure can communicate to utensil |
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| Publication Number | Publication Date |
|---|---|
| CN216599305U true CN216599305U (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122637119.8U Active CN216599305U (en) | 2021-10-29 | 2021-10-29 | Motor and electric water pump of pump sending coolant liquid structure can communicate to utensil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428195A (en) * | 2023-03-29 | 2023-07-14 | 上海越圣智控环境科技有限公司 | Centrifugal refrigerant pump |
| WO2023232027A1 (en) * | 2022-05-31 | 2023-12-07 | 浙江三花汽车零部件有限公司 | Electric pump |
| WO2024044988A1 (en) * | 2022-08-30 | 2024-03-07 | 广东德昌电机有限公司 | Electric motor and drive system having electric motor |
-
2021
- 2021-10-29 CN CN202122637119.8U patent/CN216599305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023232027A1 (en) * | 2022-05-31 | 2023-12-07 | 浙江三花汽车零部件有限公司 | Electric pump |
| WO2024044988A1 (en) * | 2022-08-30 | 2024-03-07 | 广东德昌电机有限公司 | Electric motor and drive system having electric motor |
| CN116428195A (en) * | 2023-03-29 | 2023-07-14 | 上海越圣智控环境科技有限公司 | Centrifugal refrigerant pump |
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