CN219412939U

CN219412939U - Electronic water pump

Info

Publication number: CN219412939U
Application number: CN202223607941.0U
Authority: CN
Inventors: 何先辉; 罗力成; 朱林杰
Original assignee: Ningbo Shenglong Intelligent Automobile System Co ltd
Current assignee: Ningbo Shenglong Intelligent Automobile System Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-07-25
Anticipated expiration: 2032-12-28

Abstract

The utility model belongs to the technical field of water pumps, and provides an electronic water pump, which comprises: the motor assembly comprises a motor shell, a stator and a rotor; the water pump assembly comprises a volute, an impeller and a rotating shaft, the rotating shaft is connected with the rotor, and the rotating shaft is of a hollow structure; the motor housing is characterized by further comprising a waterproof chamber assembly of a first waterproof part and a second waterproof part, wherein the first waterproof part is connected between the volute and the motor housing, the second waterproof part is arranged between the stator and the rotor, one end of the second waterproof part is connected with the motor housing, a circulation area of cooling liquid is formed between the second waterproof part and the motor housing, and a plurality of drainage holes are formed in the first waterproof part and used for introducing the cooling liquid in the volute into the circulation area. Compared with the prior art, the utility model has the advantages that: the first waterproof part and the second waterproof part of the waterproof chamber assembly are utilized to divide the stator area in the motor, the design of the sealing ring is canceled, the risk of failure of the sealing ring is avoided, and the structure is stable and reliable.

Description

Electronic water pump

Technical Field

The utility model belongs to the technical field of water pumps, and particularly relates to an electronic water pump.

Background

The electronic water pump generally adopts the motor assembly to drive the impeller to rotate, and then drives the coolant to be pressed in from the coolant inlet of the electronic water pump, and then is discharged from the coolant outlet of the electronic water pump, so that relatively stable flow is formed.

In order to separate a motor stator area from a motor rotor area in an electronic water pump, flowing cooling liquid exists in the motor stator area, the conductive cooling liquid is prevented from entering the motor stator area to cause short circuit of a motor, an independent isolation sleeve is adopted in the prior art, as disclosed in a sealing structure of an electronic water pump isolation sleeve with a patent publication number of CN215058410U, the cooling liquid area is sealed through two rubber sealing rings between the upper end and the lower end of the isolation sleeve and a motor shell respectively, and the sealing rings are deformed due to long-term extrusion of radial force of the shell, so that the sealing rings are easy to fail and leak, meanwhile, in the assembly process, the lower end isolation sleeve is blocked in a sealing groove shell process uncontrollably (blind assembly), so that the circumferential stress of the sealing rings is uneven, the sealing effect is reduced, and the possibility of cutting the sealing rings is provided.

Disclosure of Invention

The utility model aims to provide an electronic water pump, which utilizes a first waterproof part and a second waterproof part of a waterproof chamber assembly to divide a stator area in a motor, eliminates the design of a sealing ring, avoids the risk of failure of the sealing ring and has a stable and reliable structure.

The technical scheme adopted for solving the technical problems is as follows: an electronic water pump is proposed, comprising: the motor assembly and the water pump assembly, the electronic assembly includes motor housing, stator, rotor, the water pump assembly includes spiral case, impeller, pivot, the spiral case is connected motor housing's one end, be equipped with inlet and liquid outlet on the spiral case, impeller and pivot set up in the spiral case, the impeller is connected the one end of pivot, the other end of pivot is connected on the rotor, still include waterproof room subassembly, waterproof room subassembly includes first waterproof portion and the second waterproof portion of tube-shape, the axial of second waterproof portion one end with first waterproof portion integrated into one piece, first waterproof portion is connected between spiral case and the motor housing, be equipped with the intercommunication mouth on the first waterproof portion, the impeller with the rotor is located respectively the both sides of intercommunication mouth, the pivot pass the intercommunication mouth just the both ends of pivot respectively with impeller and rotor connection, the second waterproof portion sets up between stator and the rotor, the one end and the motor housing of second waterproof portion are connected, second waterproof portion with the rotor and the axial flow hole, the second waterproof portion with the motor and the second scroll are equipped with a plurality of cooling fluid through holes, the first drain hole is equipped with a plurality of circulating areas.

Compared with the prior art, the utility model has the advantages that: the first waterproof part is connected between the volute and the motor shell, the second waterproof part is connected between the stator and the rotor, the stator is separated from the water pump assembly, the motor rotates to drive the impeller to rotate, cooling liquid is sucked from the liquid inlet of the volute, then flows into the circulation area through the drain hole of the first waterproof part, flows back into the volute through the circulation hole of the rotating shaft, flows out through the liquid outlet, circulates in this way, takes away heat in the motor cavity, and cools. The stator is separated by the waterproof chamber component, so that the design of the sealing ring is canceled, the risk of failure of the sealing ring is avoided, and the structure is stable and reliable. According to the utility model, the impeller is in interference fit with the rotating shaft, so that the impeller is prevented from slipping.

In the above-mentioned electronic water pump, the motor casing is close to circumference of one end of spiral case upwards the interval equipartition has a plurality of first connecting holes, correspond on the first waterproof portion the first connecting hole is equipped with a plurality of second connecting holes, correspond on the spiral case the second connecting hole is equipped with a plurality of third connecting holes, third connecting hole, second connecting hole and first connecting hole have connected gradually the screw, thereby will spiral case, first waterproof portion with the motor casing links together. The volute, the first waterproof part and the motor housing are connected together through the first screw, and the motor housing is separated from the volute through the first waterproof part.

In the above electronic water pump, the first waterproof portion is provided with at least two first positioning holes, one end of the motor housing, which is close to the volute, is provided with at least two second positioning holes corresponding to the first positioning holes, and a positioning pin is arranged between the first positioning holes and the second positioning holes. Concentricity of the first waterproof part during press-fitting connection with the motor shell is guaranteed through the locating pin

In the electronic water pump, the motor shell is provided with the first sealing groove in the circumferential direction, which is close to one end of the volute, and the first sealing groove is internally provided with the first sealing strip, and when the first waterproof part is connected to the motor shell, the first waterproof part is pressed on the first sealing strip, so that the sealing effect is ensured.

In the electronic water pump, a third sealing groove is formed in one end, close to the volute, of the first waterproof portion, a third sealing strip is arranged in the third sealing groove, and when the volute is connected to the first waterproof portion, the volute is pressed on the first waterproof portion, so that the sealing effect is guaranteed.

In the above-mentioned electronic water pump, the one end that keeps away from in the motor casing the spiral case is equipped with the connecting plate, be equipped with the annular connecting block on the connecting plate, be equipped with the second seal groove on the periphery wall of annular connecting block, be equipped with the second sealing strip in the second seal groove, the waterproof portion cover of second is established the annular connecting block outside, just the inside wall of waterproof portion of second with second sealing strip looks butt. The second waterproof part is sleeved outside the annular connecting block and is abutted with the second sealing strip, so that the tightness of connection of the second waterproof part and the motor shell is guaranteed, the stator and the rotor are completely separated, cooling liquid circulates in a circulating area outside the rotor, the influence on a stator area is avoided, and the connection is more stable. And due to the arrangement of the positioning pin, the concentricity of the second waterproof part and the annular connecting block is also ensured, the risk of trimming the second sealing strip is reduced, and the assembly difficulty is reduced.

In the electronic water pump, a circuit board is arranged on one side, far away from the second waterproof part, of the connecting plate, a plurality of connecting ports are arranged on the connecting plate, a plurality of connector lugs are arranged on the stator corresponding to the connecting ports, and the connector lugs are connected with the circuit board through the connecting ports. The circuit board is connected to the other side of the connecting plate, and when the cooling liquid flows through the flowing area, the heat on the circuit board can be conveniently driven.

In the electronic water pump, one end, far away from the volute, of the motor shell is connected with the end cover, a fourth sealing groove is formed in the periphery, close to the motor shell, of the end cover, and a fourth sealing strip is arranged in the fourth sealing groove and is used for sealing the motor water pump.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of the structure of an embodiment of the present utility model;

fig. 3 is a schematic structural view of a watertight chamber assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a motor housing according to an embodiment of the present utility model;

fig. 5 is a cross-sectional view of one embodiment of the present utility model.

In the figure, 1, a motor shell; 2. a stator; 3. a rotor; 4. a volute; 5. an impeller; 6. a rotating shaft; 7. a liquid inlet; 8. a liquid outlet; 9. a waterproof chamber assembly; 10. a first waterproof part; 11. a second waterproof part; 12. a communication port; 13. a drain hole; 14. a first connection hole; 15. a second connection hole; 16. a third connection hole; 17. a screw; 18. a first positioning hole; 19. a second positioning hole; 20. a positioning pin; 21. a first seal groove; 22. a first sealing strip; 23. a third seal groove; 24. a third sealing strip; 25. a connecting plate; 26. an annular connecting block; 27. a second seal groove; 28. a second sealing strip; 29. a circuit board; 30. a connection port; 31. a connector lug; 32. an end cap; 33. a fourth seal groove; 34. a fourth sealing strip; 35. a flow port.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 to 5, an electronic water pump of the present utility model includes: the motor assembly comprises a motor shell 1, a stator 2 and a rotor 3, the water pump assembly comprises a volute 4, an impeller 5 and a rotating shaft 6, the volute 4 is connected to one end of the motor shell 1, a liquid inlet 7 and a liquid outlet 8 are formed in the volute 4, the impeller 5 and the rotating shaft 6 are arranged in the volute 4, the impeller 5 is connected to one end of the rotating shaft 6, the other end of the rotating shaft 6 is connected to the rotor 3, the water-proof chamber assembly 9 further comprises a water-proof chamber assembly 9, the water-proof chamber assembly 9 comprises a first waterproof part 10 and a cylindrical second waterproof part 11, the axial direction of one end of the second waterproof part 11 is integrally formed with the first waterproof part 10, the first waterproof part 10 is connected between the volute 4 and the motor shell 1, a communication port 12 is formed in the first waterproof part 10, the impeller 5 and the rotor 3 are respectively located on two sides of the communication port 12, the rotating shaft 6 passes through the communication port 12 and is respectively connected with the impeller 5 and the rotor 3, the second waterproof part 11 is arranged between the stator 2 and the rotor 3, one end of the second waterproof part 11 is connected to the motor shell 1, the second waterproof part 11 and the rotor 3 are connected, the second waterproof part 11 and the rotor 3 are axially communicated with the first cooling liquid through hole 13, and the first cooling hole 13 is formed between the second waterproof part 1 and the first cooling hole and the rotor 1 and the cooling hole 13, the cooling hole 13 is formed in the axial flow through the first cooling hole and the cooling hole, and the cooling hole 13 is communicated with the cooling area, and the cooling hole 13 is formed in the cooling area and the cooling area.

Further, a plurality of first connecting holes 14 are uniformly distributed on the motor housing 1 near one end of the volute 4 at intervals in the circumferential direction, a plurality of second connecting holes 15 are formed in the first waterproof portion 10 corresponding to the first connecting holes 14, a plurality of third connecting holes 16 are formed in the volute 4 corresponding to the second connecting holes 15, and screws 17 are sequentially connected to the third connecting holes 16, the second connecting holes 15 and the first connecting holes 14, so that the volute 4, the first waterproof portion 10 and the motor housing 1 are connected together. The scroll casing 4, the first waterproof part 10, and the motor housing 1 are connected together by the first screw 17, and the motor housing 1 is separated from the scroll casing 4 by the first waterproof part 10.

Further, the first waterproof portion 10 is provided with at least two first positioning holes 18, one end of the motor housing 1, which is close to the volute 4, is provided with at least two second positioning holes 19 corresponding to the first positioning holes 18, and a positioning pin 20 is arranged between the first positioning holes 18 and the second positioning holes 19. Concentricity of the first waterproof part 10 when being connected with the motor housing 1 in a press-fit manner is ensured by the positioning pin 20

Further, the motor housing 1 is provided with a first sealing groove 21 in the circumferential direction near one end of the volute 4, a first sealing strip 22 is arranged in the first sealing groove 21, and when the first waterproof part 10 is connected to the motor housing 1, the first waterproof part 10 is pressed on the first sealing strip 22, so that the sealing effect is ensured.

Further, one end of the first waterproof part 10, which is close to the volute 4, is provided with a third sealing groove 23, a third sealing strip 24 is arranged in the third sealing groove 23, and when the volute 4 is connected to the first waterproof part 10, the volute 4 is tightly pressed on the first waterproof part 10, so that the sealing effect is ensured.

Further, one end of the motor housing 1, which is far away from the volute 4, is provided with a connecting plate 25, an annular connecting block 26 is arranged on the connecting plate 25, a second sealing groove 27 is arranged on the outer peripheral wall of the annular connecting block 26, a second sealing strip 28 is arranged in the second sealing groove 27, a second waterproof part 11 is sleeved on the outer side of the annular connecting block 26, and the inner side wall of the second waterproof part 11 is abutted against the second sealing strip 28. The second waterproof part 11 is sleeved outside the annular connecting block 26 and is abutted against the second sealing strip 28, so that the tightness of connection between the second waterproof part 11 and the motor shell 1 is guaranteed, the stator 2 and the rotor 3 are completely separated, cooling liquid circulates in the circulating area outside the rotor 3, the influence on the stator 2 area is avoided, and the connection is more stable. The concentricity of the second waterproof part 11 and the annular connecting block 26 is guaranteed due to the arrangement of the positioning pin 20, the risk of trimming the second sealing strip 28 is reduced, and the assembly difficulty is reduced.

Further, a circuit board 29 is disposed on a side of the connection board 25 away from the second waterproof portion 11, a plurality of connection ports 30 are disposed on the connection board 25, a plurality of connector lugs 31 are disposed on the stator 2 corresponding to the connection ports 30, and the connector lugs 31 are connected with the circuit board 29 through the connection ports 30. The circuit board 29 is connected to the other side of the connection plate 25, so that the heat on the circuit board 29 can be conveniently driven when the cooling liquid flows through the flowing area.

Further, one end of the motor housing 1 far away from the volute 4 is connected with an end cover 32, a fourth sealing groove 33 is formed in the periphery of the end cover 32 close to the motor housing 1, a fourth sealing strip 34 is arranged in the fourth sealing groove 33, and the motor water pump is sealed through the end cover 32.

Working principle: the first waterproof part 10 is connected between the volute 4 and the motor shell 1, the second waterproof part 11 is connected between the stator 2 and the rotor 3, the stator 2 is separated from the water pump assembly, the motor rotates to drive the impeller 5 to rotate, cooling liquid is sucked from the liquid inlet 7 of the volute 4, flows into a circulation area through the drain hole 13 of the first waterproof part 10, flows back into the volute 4 through the circulation hole 35 of the rotating shaft 6, flows out through the liquid outlet 8, circulates in this way, takes away heat in a motor cavity, and cools. The stator 2 is separated by the waterproof chamber assembly 9, so that the design of a sealing ring is canceled, the risk of failure of the sealing ring is avoided, and the structure is stable and reliable. According to the utility model, the impeller 5 is in interference fit with the rotating shaft 6, so that the impeller 5 is prevented from slipping.

The specific embodiments described herein are offered by way of example only. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined.

Claims

1. An electronic water pump, comprising: the motor assembly comprises a motor housing (1), a stator (2) and a rotor (3), the water pump assembly comprises a volute (4), an impeller (5) and a rotating shaft (6), the volute (4) is connected with one end of the motor housing (1), a liquid inlet (7) and a liquid outlet (8) are formed in the volute (4), the impeller (5) and the rotating shaft (6) are arranged in the volute (4), the impeller (5) is connected with one end of the rotating shaft (6), the other end of the rotating shaft (6) is connected with the rotor (3), the motor assembly is characterized by further comprising a waterproof chamber assembly (9), the waterproof chamber assembly comprises a first waterproof part (10) and a cylindrical second waterproof part (11), the axial direction of one end of the second waterproof part (11) is integrally formed with the first waterproof part (10), the first waterproof part (10) is connected between the volute (4) and the motor housing (1), a communication port (12) is formed in the first waterproof part (10), the impeller (5) and the rotor (3) are respectively communicated with the two sides of the rotor (12), the rotating shaft (6) penetrates through the communication port (12) and two ends of the rotating shaft (6) are respectively connected with the impeller (5) and the rotor (3), the second waterproof part (11) is arranged between the stator (2) and the rotor (3), one end of the second waterproof part (11) is connected with the motor shell (1), the second waterproof part (11) is connected with the rotor (3), the second waterproof part (11) and the rotor (3) form a circulation area of cooling liquid between the motor shell (1), a plurality of drain holes (13) are formed in the first waterproof part (10), the drain holes (13) are communicated with the circulation area of the volute (4) and the cooling liquid, and the rotating shaft (6) is provided with a circulation port (35) which is axially communicated.

2. An electronic water pump according to claim 1, characterized in that a plurality of first connecting holes (14) are uniformly distributed on the motor housing (1) near one end of the volute (4) at intervals in the circumferential direction, a plurality of second connecting holes (15) are formed in the first waterproof part (10) corresponding to the first connecting holes (14), a plurality of third connecting holes (16) are formed in the volute (4) corresponding to the second connecting holes (15), and screws (17) are sequentially connected to the third connecting holes (16), the second connecting holes (15) and the first connecting holes (14), so that the volute (4), the first waterproof part (10) and the motor housing (1) are connected together.

3. An electronic water pump according to claim 2, wherein the first waterproof portion (10) is provided with at least two first positioning holes (18), one end of the motor housing (1) close to the volute (4) corresponding to the first positioning holes (18) is provided with at least two second positioning holes (19), and a positioning pin (20) is arranged between the first positioning holes (18) and the second positioning holes (19).

4. An electronic water pump according to claim 3, characterized in that a first sealing groove (21) is arranged in the circumferential direction of one end of the motor housing (1) close to the volute (4), and a first sealing strip (22) is arranged in the first sealing groove (21).

5. An electronic water pump according to claim 4, characterized in that a third sealing groove (23) is arranged at one end of the first waterproof part (10) close to the volute (4), and a third sealing strip (24) is arranged in the third sealing groove (23).

6. An electronic water pump according to claim 3, characterized in that a connecting plate (25) is arranged at one end, far away from the volute (4), of the motor housing (1), an annular connecting block (26) is arranged on the connecting plate (25), a second sealing groove (27) is arranged on the peripheral wall of the annular connecting block (26), a second sealing strip (28) is arranged in the second sealing groove (27), the outer side of the annular connecting block (26) is sleeved with the second waterproof part (11), and the inner side wall of the second waterproof part (11) is abutted against the second sealing strip (28).

7. An electronic water pump according to claim 6, characterized in that a circuit board (29) is arranged on one side of the connecting plate (25) away from the second waterproof part (11), a plurality of connecting ports (30) are arranged on the connecting plate (25), a plurality of connector lugs (31) are arranged on the stator (2) corresponding to the connecting ports (30), and the connector lugs (31) are connected with the circuit board (29) through the connecting ports (30).

8. An electronic water pump according to claim 7, characterized in that one end of the motor housing (1) far away from the volute (4) is connected with an end cover (32), a fourth sealing groove (33) is formed in the periphery of the end cover (32) close to the motor housing (1), and a fourth sealing strip (34) is arranged in the fourth sealing groove (33).