CN210178587U - Electric centrifugal pump - Google Patents
Electric centrifugal pump Download PDFInfo
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- CN210178587U CN210178587U CN201920885950.5U CN201920885950U CN210178587U CN 210178587 U CN210178587 U CN 210178587U CN 201920885950 U CN201920885950 U CN 201920885950U CN 210178587 U CN210178587 U CN 210178587U
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Abstract
The utility model relates to an electric centrifugal pump, including the water pump shell, seal the water bearing, the water pump impeller, the spring washer, the motor inner cover, the bearing frame, the rotor front bearing, motor stator, electric motor rotor, the electric motor rotor axle, electric motor rotor rear bearing, the guide's impeller lid, water pump drive control panel, controller lid and motor housing, and through the water pump intake antrum that communicates in proper order, the axle center through-hole of electric motor rotor axle, the guide's impeller, the guide's wheel chamber of guide's impeller, the discharge orifice is crossed to the motor inner cover spiral, the rotor chamber, bearing frame spiral discharge orifice and water pump impeller constitute inside forced cooling system. The electric centrifugal pump is simple in structure and ingenious in design, reduces the flow loss of water flow, improves the cooling effect of an internal cooling system, well solves the problem of heat load of the electric centrifugal pump, and improves the working reliability of the electric centrifugal pump.
Description
Technical Field
The utility model relates to a centrifugal pump, especially be applied to an electric centrifugal pump of automobile cooling system.
Background
The cooling water pump applied to the automobile cooling system basically adopts a centrifugal water pump, along with the development of electric automobiles, power components such as a driving motor, a power battery and the like of the electric automobiles need to be cooled by the cooling system to ensure the working performance and the working reliability of the cooling water pump, the cooling system of the electric automobiles does not have a mechanical water pump driven by an engine of a traditional fuel automobile, the electric cooling water pump driven by electric power is the primary choice, the motor and a motor controller for driving the motor to work can generate heat in the working process, the rotor is overheated to cause the demagnetization of a permanent magnet, the stator is overheated to cause the insulation burning of a coil, the overheating of the controller can cause the burning of devices of the controller, so that the heat load problem is the main problem to be solved by the electric water pump, the existing electric water pump adopts a cooling mode of leading a small amount of water from a high-pressure water cavity of the water pump to a, then inside cooling water flows from water pump impeller water sucking port department, can cause the loss of certain flow loss and lift loss and electric energy like this, because there are flow loss and lift loss and can not carry out the inside cooling with large-traffic water, and after the inside cooling water that flows from water pump impeller water sucking port department is pumped to the high-pressure chamber, inside cooling water that has partly temperature risen can get into inside cooling water course once more, it is not good to lead to the cooling effect, and some electric water pumps adopt the soaking formula cooling that inside cooling water does not flow even, inside heat can not dispel well, the cooling effect is poor, there is great reliability hidden danger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a reliability is high and have good radiating effect's low-loss electric centrifugal pump.
In order to realize the technical scheme, the utility model provides an electric centrifugal pump, include: the motor comprises a motor shell and a water pump shell, wherein the water pump shell is arranged on the front end face of the motor shell, the motor stator is arranged in an inner cavity hole of the motor shell, the motor is characterized by further comprising a motor inner cover, the rear end of the motor inner cover penetrates through an iron core inner hole of the motor stator and extends to the rear end of the inner cavity of the motor shell, the rear end of the motor inner cover is provided with a mounting hole and a spiral overflowing hole for mounting a rear bearing of a motor rotor, the rear bearing of the motor rotor is arranged in a bearing mounting hole formed in the rear end of the motor inner cover, a chamfer is arranged at the front end hole of the inner cavity of the motor inner cover, the outer side of a bearing seat is made into a conical surface, the outer conical surface of the bearing seat is abutted against the chamfer of a front end hole of the inner cavity of the motor inner cover, the mounting hole and the spiral overflowing hole for mounting, the motor rotor shaft is arranged between the motor rotor front bearing and the motor rotor rear bearing, the motor rotor is fixed on the motor rotor shaft and is positioned in a rotor cavity formed by the motor stator, the front end of the motor rotor shaft extends out of the front end surface of the motor rotor front bearing and extends into an internal water inlet cavity of the water pump shell, the water pump impeller is fixed on a front end shaft neck of the motor rotor shaft in a tight fit manner through a water pump impeller ridge piece, a water sealing bearing for isolating high-low pressure water cavities is arranged at the internal water inlet of the water pump shell, a circle of boss is arranged on the edge of a front end central hole of the water pump impeller, the front end surface of the boss at the front end of the water pump impeller is abutted against the end surface of a bearing inner ring of the water sealing bearing to realize the isolation of the high-low pressure water cavities, a through hole penetrating through the front end and the rear end of the whole motor rotor shaft is arranged at the axis part of the motor rotor shaft, the rear end of the motor rotor shaft, the pilot impeller is fixed on a rear end shaft neck of the motor rotor shaft in a tight fit mode through a pilot impeller ridge piece and is positioned in a pilot impeller cavity, and a water pump water inlet cavity, an axle center through hole of the motor rotor shaft, the pilot impeller cavity of the pilot impeller, a motor inner cover spiral overflowing hole, a rotor cavity, a bearing seat spiral overflowing hole and the water pump impeller which are sequentially communicated form an internal forced cooling system.
Preferably, the water pump driving control board is installed in a counter bore at the rear end of the motor shell and is sealed and protected by the controller cover, and the bottom surface of the water pump driving control board is tightly attached to the bottom surface of the counter bore at the rear end of the motor shell.
Preferably, a circle of raised tubular lug is arranged at the central part of the bottom of the inner cavity of the motor shell, a lug with a spiral inclined plane is arranged in the inner cavity of the tubular lug, a spigot is arranged at the orifice of the inner cavity of the motor shell, an end face flange is arranged at the front end of the inner motor cover, and the front end flange of the inner motor cover is arranged in the spigot at the orifice of the inner cavity of the motor shell.
Preferably, a sealing ring is arranged between the inner motor cover and the tubular lug in the inner cavity of the motor shell.
Preferably, the water pump housing is fixed to the front end surface of the motor housing by means of bolt fastening and sealed with a sealing gasket.
Preferably, the front end and the rear end of the water sealing bearing are both provided with sealing covers.
Preferably, an elastic washer is arranged between the rear end of the water pump impeller and the front end face of the front bearing of the motor rotor.
Preferably, a pilot impeller cover is arranged in the rear end orifice of the pilot impeller.
The utility model provides a pair of electric centrifugal pump's beneficial effect lies in: the electric centrifugal pump has simple structure and ingenious design, in the actual working process, the cooling flow of internal cooling water is further increased by the pumping of the pilot impeller on the basis of the pumping of the water pump impeller, the rotation motion of the pilot impeller and the motor rotor drives the rotation of the cooling water in the cavity, the spiral inclined surface of the lug with the spiral inclined surface at the bottom of the inner cavity of the motor shell extrudes the water flow of the rotation motion in the pilot impeller cavity to the rotor cavity, the flow resistance of the internal water flow is effectively reduced by the spiral flow channel of the motor inner cover and the spiral flow channel of the bearing seat which are arranged along the water flow track, in addition, the water flow in the water pump shell passes through the internal cooling flow channel to the high-pressure water cavity and the water pump water outlet pumped out by the water pump impeller, the absorbed internal heat is taken away along with the water flow pumped out by the water pump, the flow of the internal cooling water flow can be increased and the flow resistance of the internal cooling water flow can be reduced by arranging the overflowing holes, so that the flow loss of the water flow is reduced, the cooling effect of an internal cooling system is improved, the heat load problem of the electric centrifugal pump is solved well, and the working reliability of the electric centrifugal pump is improved.
Drawings
FIG. 1 is a structural sectional view of the present invention;
fig. 2 is a schematic perspective view of a motor housing according to the present invention;
FIG. 3 is a schematic perspective view of the inner cover of the present invention;
fig. 4 is a schematic perspective view of the middle bearing seat of the present invention.
Wherein: 1. a water pump housing; 2. a water seal bearing; 3. a water pump impeller; 31. a water pump impeller ridge piece; 4. an elastic washer; 5. an inner motor cover; 51. a motor inner cover bearing mounting hole; 52. the inner cover of the motor is provided with a spiral overflowing hole; 53. a front end flange of the motor inner cover; 6. a bearing seat; 61. a bearing mounting hole of the bearing seat; 62. a bearing seat spiral overflowing hole; 7. a rotor front bearing; 8. a motor stator; 9. a motor rotor; 10. a motor rotor shaft; 11. a motor rotor rear bearing; 12. a pilot impeller; 121. a pilot impeller ridge member; 13. a pilot impeller cover; 14. the water pump drives the control panel; 15. a controller cover; 16. a motor housing; 161. a tubular lug; 162. a lug with a spiral inclined plane; 163. and (5) stopping the opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.
Example (b): an electric centrifugal pump.
Referring to fig. 1 to 4, an electric centrifugal pump includes a water pump housing 1, a water sealing bearing 2, a water pump impeller 3, an elastic washer 4, a motor inner cover 5, a bearing seat 6, a rotor front bearing 7, a motor stator 8, a motor rotor 9, a motor rotor shaft 10, a motor rotor rear bearing 11, a pilot impeller 12, a pilot impeller cover 13, a water pump driving control board 14, a controller cover 15 and a motor housing 16, wherein a circle of raised tubular lug 161 is arranged at a central portion of the bottom of an inner cavity of the motor housing 16, a lug 162 with a spiral inclined surface is arranged in the inner cavity of the tubular lug 161, a spigot 163 is arranged at an orifice of the inner cavity of the motor housing 16, the motor stator 8 is installed in an inner cavity hole of the motor housing 16, the motor inner cover 5 is formed by integrally combining a motor inner end cover and a motor rotor cover, a rear end of the motor inner cover 5 passes through an inner core hole of the motor stator 8 and extends to a rear end of the inner cavity, a sealing ring is arranged between the inner motor cover 5 and a tubular lug 161 of the inner cavity of the motor shell 16 for sealing, the rear end of the inner motor cover 5 is provided with a mounting hole 51 of an inner motor cover bearing and a spiral overflowing hole 52 of the inner motor cover, a rear motor rotor bearing 11 is arranged in the mounting hole 51 of the inner motor cover bearing, the front end of the inner motor cover 5 is provided with an end flange 53, the front end flange 53 of the inner motor cover 5 is arranged in a spigot 163 at the hole of the inner cavity of the motor shell 16, the hole of the front end of the inner cavity of the inner motor cover 5 is provided with a chamfer, the outer side of the bearing seat 6 is designed into a conical surface, the outer conical surface of the bearing seat 6 is abutted against the chamfer of the front end hole of the inner cavity of the inner motor cover 5, the bearing seat bearing mounting hole 61 and the spiral overflowing hole 62 are arranged on the bearing seat 6, the front motor rotor bearing 7 is arranged in the bearing seat mounting hole 61, the front end of the motor rotor shaft 10 extends out of the front end face of the motor rotor front bearing 7 and extends into the internal water inlet cavity of the water pump shell 1, the motor rotor 9 fixed on the motor rotor shaft 10 is installed in the inner cavity of the motor inner cover 5, the water pump shell 1 is installed on the motor shell 16 in a bolt fastening mode and is sealed by a sealing washer, the internal water inlet of the water pump shell 1 is provided with a water sealing bearing 2 for isolating a high-low pressure water cavity, the front end and the rear end of the water sealing bearing 2 are provided with sealing covers, the water pump impeller 3 is provided with a water pump impeller threshold 31, the water pump impeller 3 is fixed on the front end shaft neck of the motor rotor shaft 10 in a tight fit mode through the water pump impeller threshold 31, an elastic washer 4 is arranged between the rear end of the water pump impeller 3 and the front end face of the motor rotor front bearing 7, a circle of boss is arranged on the front end center hole edge of the water pump impeller 3, the front end face of the front end The cavity is isolated, the front end face of a boss at the front end of the water pump impeller 3 is kept attached to the end face of the bearing inner ring of the water sealing bearing 2 by the axial tension of the elastic washer 4, the front bearing 7 of the motor rotor and the bearing seat 6 for mounting the front bearing 7 of the motor rotor are positioned at the mounting position by the axial tension of the elastic washer 4, a through hole penetrating through the whole front and rear ends of the motor rotor shaft 10 is arranged at the axle center part of the motor rotor shaft 10, the rear journal of the motor rotor shaft 10 is sleeved in the bearing hole of the rear bearing 11 of the motor rotor, the rear end of the motor rotor shaft 10 extends out of the rear end face of the rear bearing 11 of the motor rotor and extends into a pilot impeller cavity formed by surrounding the rear end of the inner cover 5 of the motor and the tubular lug 161 in the inner cavity of the motor shell 16, a pilot impeller sill member 121 is arranged on the pilot impeller 12, and the pilot impeller 12 is, a pilot impeller cover 13 is arranged in a rear end hole of the pilot impeller 12, a water pump driving control plate 14 is installed in a counter bore at the rear end of the motor shell 16 and is sealed and protected by a controller cover 15, and the bottom surface of the water pump driving control plate 14 is tightly attached to the bottom surface of the counter bore at the rear end of the motor shell 16.
In this embodiment, the water pump inlet cavity, the axial center through hole of the motor rotor shaft, the pilot impeller 12, the pilot impeller cavity, the motor inner cover spiral overflowing hole 52, the rotor cavity, the bearing seat spiral overflowing hole 62 and the water pump impeller 3 which are sequentially communicated form an internal forced cooling system, in the actual working process, the cooling flow of internal cooling water is further increased by pumping of the pilot impeller 12 on the basis of suction of the water pump impeller 3, the pilot impeller cover 13 mounted on the pilot impeller 12 prevents water pumped by the pilot impeller 12 from flowing back into the water inlet of the pilot impeller 12, the rotary motion of the pilot impeller 12 and the motor rotor 9 drives the rotation of the cooling water in the cavity, the spiral inclined surface of the lug 162 with the spiral inclined surface at the bottom of the inner cavity of the motor housing 16 extrudes the water flow in the pilot impeller cavity to the rotor cavity, and the flow of the motor inner cover spiral overflowing hole 52 and the bearing seat spiral overflowing hole 62 which are arranged along the water flow path effectively reduces the flow Resistance, and, from the water inlet in the water pump shell 1 through inside cooling runner up to high-pressure water cavity and the water pump delivery port that water pump impeller 3 pumped, inside cooling system's rivers are taken away the inside heat that absorbs along with the rivers that the water pump pumped, inside cooling system's rivers do not have return loss, can adopt the discharge orifice in great aperture and increaseed inside cooling rivers's flow and reduced inside cooling rivers's flow resistance, when having reduced the flow loss of rivers, inside cooling system's cooling effect has been improved, the heat load problem of electric centrifugal pump has been solved betterly, the operational reliability of electric centrifugal pump has been improved.
The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the accompanying drawings, and therefore, all equivalents and modifications that can be accomplished without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims (8)
1. An electric centrifugal pump comprising: the motor comprises a motor shell and a water pump shell, wherein the water pump shell is arranged on the front end face of the motor shell, the motor stator is arranged in an inner cavity hole of the motor shell, the motor is characterized by further comprising a motor inner cover, the rear end of the motor inner cover penetrates through an iron core inner hole of the motor stator and extends to the rear end of the inner cavity of the motor shell, the rear end of the motor inner cover is provided with a mounting hole and a spiral overflowing hole for mounting a rear bearing of a motor rotor, the rear bearing of the motor rotor is arranged in a bearing mounting hole formed in the rear end of the motor inner cover, a chamfer is arranged at the front end hole of the inner cavity of the motor inner cover, the outer side of a bearing seat is made into a conical surface, the outer conical surface of the bearing seat is abutted against the chamfer of the front end hole of the inner cavity of the motor inner cover, the mounting hole and the spiral overflowing hole for, the motor rotor shaft is arranged between the motor rotor front bearing and the motor rotor rear bearing, the motor rotor is fixed on the motor rotor shaft and is positioned in a rotor cavity formed by the motor stator, the front end of the motor rotor shaft extends out of the front end surface of the motor rotor front bearing and extends into an internal water inlet cavity of the water pump shell, the water pump impeller is fixed on a front end shaft neck of the motor rotor shaft in a tight fit manner through a water pump impeller ridge piece, a water sealing bearing for isolating high-low pressure water cavities is arranged at the internal water inlet of the water pump shell, a circle of boss is arranged on the edge of a front end central hole of the water pump impeller, the front end surface of the boss at the front end of the water pump impeller is abutted against the end surface of a bearing inner ring of the water sealing bearing to realize the isolation of the high-low pressure water cavities, a through hole penetrating through the front end and the rear end of the whole motor rotor shaft is arranged at the axis part of the motor rotor shaft, the rear end of the motor rotor shaft, the pilot impeller is fixed on a rear end shaft neck of the motor rotor shaft in a tight fit mode through a pilot impeller ridge piece and is positioned in a pilot impeller cavity, and a water pump water inlet cavity, an axle center through hole of the motor rotor shaft, the pilot impeller cavity of the pilot impeller, a motor inner cover spiral overflowing hole, a rotor cavity, a bearing seat spiral overflowing hole and the water pump impeller which are sequentially communicated form an internal forced cooling system.
2. The electric centrifugal pump of claim 1, wherein: the water pump driving control board is installed in a counter bore at the rear end of the motor shell and is sealed and blocked by the controller cover for protection, and the bottom surface of the water pump driving control board is tightly attached to the bottom surface of the counter bore at the rear end of the motor shell.
3. The electric centrifugal pump of claim 1, wherein: the motor is characterized in that a circle of raised tubular lug is arranged at the central part of the bottom of an inner cavity of the motor shell, a lug with a spiral inclined plane is arranged in the inner cavity of the tubular lug, a spigot is arranged at an orifice of the inner cavity of the motor shell, an end face flange is arranged at the front end of the inner motor cover, and the front end flange of the inner motor cover is arranged in the spigot at the orifice of the inner cavity of the motor shell.
4. The electric centrifugal pump of claim 3, wherein: and a sealing ring is arranged between the inner motor cover and the tubular lug in the inner cavity of the motor shell.
5. The electric centrifugal pump of claim 1, wherein: the water pump shell is fixed on the front end face of the motor shell in a bolt fastening mode and sealed by a sealing gasket.
6. The electric centrifugal pump of claim 1, wherein: and the front end and the rear end of the water sealing bearing are respectively provided with a sealing cover.
7. The electric centrifugal pump of claim 1, wherein: an elastic washer is arranged between the rear end of the water pump impeller and the front end face of the front bearing of the motor rotor.
8. The electric centrifugal pump of claim 1, wherein: and a pilot impeller cover is arranged in a hole at the rear end of the pilot impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885950.5U CN210178587U (en) | 2019-06-13 | 2019-06-13 | Electric centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920885950.5U CN210178587U (en) | 2019-06-13 | 2019-06-13 | Electric centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN210178587U true CN210178587U (en) | 2020-03-24 |
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ID=69837398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920885950.5U Active CN210178587U (en) | 2019-06-13 | 2019-06-13 | Electric centrifugal pump |
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| CN (1) | CN210178587U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159548A (en) * | 2019-06-13 | 2019-08-23 | 广东骏驰科技股份有限公司 | A kind of electric centrifugal pump |
| CN111271295A (en) * | 2020-04-01 | 2020-06-12 | 广东骏驰科技股份有限公司 | Electric water pump with control panel arranged in middle of water pump |
| CN114278576A (en) * | 2020-12-25 | 2022-04-05 | 利欧集团浙江泵业有限公司 | Integrated impeller deposit prevention water pump |
| CN115182886A (en) * | 2021-10-29 | 2022-10-14 | 利欧集团浙江泵业有限公司 | A dual-channel water pump integrated with the controller |
-
2019
- 2019-06-13 CN CN201920885950.5U patent/CN210178587U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159548A (en) * | 2019-06-13 | 2019-08-23 | 广东骏驰科技股份有限公司 | A kind of electric centrifugal pump |
| CN110159548B (en) * | 2019-06-13 | 2024-02-20 | 广东骏驰科技股份有限公司 | Electric centrifugal pump |
| CN111271295A (en) * | 2020-04-01 | 2020-06-12 | 广东骏驰科技股份有限公司 | Electric water pump with control panel arranged in middle of water pump |
| WO2021196579A1 (en) * | 2020-04-01 | 2021-10-07 | 广东骏驰科技股份有限公司 | Electric water pump with control panel installed in the middle |
| EP3913229A4 (en) * | 2020-04-01 | 2022-04-20 | Guangdong Junchi Science and Technology Co., Ltd. | Electric water pump with control panel installed in the middle |
| US11802565B2 (en) | 2020-04-01 | 2023-10-31 | Guangdong Junchi Science And Technology Co., Ltd. | Electric water pump with control panel mounted in the middle of the water pump |
| CN114278576A (en) * | 2020-12-25 | 2022-04-05 | 利欧集团浙江泵业有限公司 | Integrated impeller deposit prevention water pump |
| CN114278576B (en) * | 2020-12-25 | 2022-10-04 | 利欧集团浙江泵业有限公司 | Integrated impeller deposit prevention water pump |
| CN115182886A (en) * | 2021-10-29 | 2022-10-14 | 利欧集团浙江泵业有限公司 | A dual-channel water pump integrated with the controller |
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