CN220566283U

CN220566283U - Electronic water pump and vehicle

Info

Publication number: CN220566283U
Application number: CN202321043242.XU
Authority: CN
Inventors: 张小林; 张智敏; 周荣斌
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd; Anhui Welling Auto Parts Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd; Anhui Welling Auto Parts Co Ltd
Priority date: 2023-03-22
Filing date: 2023-04-28
Publication date: 2024-03-08
Anticipated expiration: 2033-04-28
Also published as: CN220172968U; CN220566300U; CN220673495U; CN117458772A; CN220172995U; CN117458771A; CN220570423U; CN117254621A

Abstract

The utility model discloses an electronic water pump and a vehicle. The electronic water pump comprises a pump main body, a sealing ring and a wear-resistant pad, wherein the pump main body comprises a pump shell and an impeller, the impeller is arranged in the pump shell, a liquid inlet is formed in the pump shell, a liquid inlet end of the impeller and the liquid inlet are arranged at intervals relatively, and a containing cavity is formed between the liquid inlet end of the impeller and the inner wall surface of the pump shell; the sealing ring is arranged in the accommodating cavity and is abutted against the inner wall surface of the pump shell; the wear-resisting pad is arranged between the sealing ring and the liquid inlet end of the impeller, the wear-resisting pad is arranged outside the impeller, and the sealing ring and the wear-resisting pad are mutually matched and seal a gap between the liquid inlet end of the impeller and the inner wall surface of the pump shell. The utility model can prevent the impeller from liquid backflow, so as to reduce flow loss when the impeller works and improve the working efficiency of the electronic water pump.

Description

Electronic water pump and vehicle

The present application claims priority from chinese patent application No. 202310295844.2 entitled "liquid passing member, electronic water pump, and vehicle," filed 22 at 2023, 03, and 22, the entire contents of which are incorporated herein by reference.

Technical Field

The utility model relates to the technical field of vehicles, in particular to an electronic water pump and a vehicle.

Background

When the existing electronic water pump works, the impeller can have a high-speed backflow phenomenon, namely part of liquid discharged from an impeller outlet flows back to an impeller inlet through a gap between the impeller and a volute, and is discharged from the impeller outlet after being sucked into an inner cavity of the impeller from the impeller inlet, so that circulating flow of leakage liquid is formed, larger flow loss can be caused, and the working efficiency of the electronic water pump is affected.

Disclosure of Invention

The utility model mainly aims to provide an electronic water pump and a vehicle, and aims to prevent the phenomenon of liquid backflow of an impeller, so as to reduce flow loss of the impeller during operation and improve the working efficiency of the electronic water pump.

In order to achieve the above object, the present utility model provides an electronic water pump, comprising:

the pump body comprises a pump shell and an impeller, wherein the impeller is arranged in the pump shell, a liquid inlet is formed in the pump shell, a liquid inlet end of the impeller and the liquid inlet are arranged at opposite intervals, and a containing cavity is formed between the liquid inlet end of the impeller and the inner wall surface of the pump shell;

the sealing ring is arranged in the accommodating cavity and is abutted against the inner wall surface of the pump shell; and

the wear-resisting pad is arranged between the sealing ring and the liquid inlet end of the impeller, the wear-resisting pad is arranged outside the impeller, and the sealing ring and the wear-resisting pad are mutually matched and seal a gap between the liquid inlet end of the impeller and the inner wall surface of the pump shell.

In an embodiment, the first end surface of the wear pad abuts against the second end surface of the impeller, and the first end surface and/or the second end surface is provided with a wear reducing part.

In an embodiment, the wear reduction portion includes at least one of a wear reduction groove, a wear reduction hole, and a wear reduction ring.

In an embodiment, the wear-resistant pad is provided with a wear-reducing portion on a first end surface, the wear-reducing portion includes a plurality of wear-reducing grooves, and the plurality of wear-reducing grooves are arranged at intervals on the first end surface.

In an embodiment, the wear pad is in an annular arrangement, and one end of the wear reduction groove penetrates through the inner wall surface of the wear pad.

In an embodiment, the sealing ring comprises a first sealing part and a second sealing part which are annularly arranged, the second sealing part is arranged on one side of the first sealing part, which is away from the liquid inlet, and the outer diameter of the second sealing part is smaller than the outer diameter of the first sealing part.

In an embodiment, a limiting groove matched with the second sealing part is formed in the accommodating cavity, and the outer diameter of the second sealing part and the width of the notch of the limiting groove are gradually reduced from the liquid inlet to the impeller.

In one embodiment, the impeller comprises an impeller cover and a plurality of blades arranged on the impeller cover, the impeller cover and the blades are integrally formed, the pump body further comprises a rotor assembly, the impeller is detachably arranged on a mounting plate of the rotor assembly, and the rotor assembly is in driving connection with the impeller.

In an embodiment, the pump main body further comprises a rotor assembly and a main shaft, the rotor assembly comprises a shaft sleeve sleeved on the periphery of the main shaft and a rotor body sleeved on the periphery of the shaft sleeve, a mounting plate is arranged at one end, close to the liquid inlet, of the rotor body, the impeller is arranged on the mounting plate, a first runner groove is formed in the inner peripheral wall of the shaft sleeve, and the first runner groove is communicated with an impeller runner of the impeller.

In an embodiment, the first runner groove is a straight groove, or a chute, or a spiral groove along the axial direction of the main shaft.

In an embodiment, the pump body further includes a casing, the pump casing is mounted on the casing to form a pump cavity, the impeller is disposed in the pump cavity, a cooling liquid flow passage is disposed on the casing, a liquid inlet of the cooling liquid flow passage is communicated with the pump cavity, and a liquid outlet of the cooling liquid flow passage is communicated with the first flow channel.

In an embodiment, a cyclone structure is disposed at an end of the casing away from the liquid inlet, the cyclone structure is located on a conveying path of the cooling liquid flow channel, and the cyclone structure is used for enabling cooling liquid flowing through to form a cyclone.

The utility model also provides a vehicle comprising the electronic water pump.

The electronic water pump comprises a pump body, a sealing ring and a wear-resistant pad, wherein the pump body comprises a pump shell and an impeller, the impeller is arranged in the pump shell, a containing cavity is formed between the liquid inlet end of the impeller and the inner wall surface of the pump shell, the sealing ring is arranged in the containing cavity and is abutted against the inner wall surface of the pump shell, the wear-resistant pad is arranged between the sealing ring and the liquid inlet end of the impeller, the wear-resistant pad is arranged outside the impeller, the sealing ring and the wear-resistant pad are mutually matched and seal a gap between the liquid inlet end of the impeller and the inner wall surface of the pump shell, and the arrangement is such that liquid discharged from an impeller runner of the impeller cannot flow back to the liquid inlet end of the impeller through the gap between the impeller and the pump shell, namely, the liquid discharged from the impeller is prevented from flowing back into the impeller, and flow loss during operation of the impeller is avoided, so that the working efficiency of the electronic water pump can be improved; and the wear-resistant pad has better wear resistance, so that the occurrence of the condition that the impeller leaks liquid due to the abrasion of the wear-resistant pad is reduced, and the stability of the operation of the electronic water pump is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of an electronic water pump according to the present utility model;

FIG. 2 is a cross-sectional view of the electronic water pump of FIG. 1;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a cross-sectional view of the structure of FIG. 1;

FIG. 5 is a schematic view of the wear pad of FIG. 3;

FIG. 6 is a schematic diagram of the structure of FIG. 5 from another perspective;

FIG. 7 is a schematic view of a portion of the structure of FIG. 4;

FIG. 8 is a cross-sectional view of the structure of FIG. 7;

FIG. 9 is a schematic diagram of the structure of FIG. 7 from another perspective

Fig. 10 is a schematic view of a portion of the structure of fig. 4.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In order to avoid the situation, the utility model provides the electronic water pump and the vehicle comprising the electronic water pump, and the electronic water pump can prevent the impeller from flowing back, so that the flow loss of the impeller during working is reduced, and the working efficiency of the electronic water pump is improved.

Referring to fig. 1 to 4, in an embodiment of an electronic water pump 10 of the present utility model, the electronic water pump 10 includes a pump body 11, a sealing ring 300 and a wear pad 400, the pump body 11 includes a pump housing 100 and an impeller 200, the impeller 200 is disposed in the pump housing 100, a liquid inlet 110 is disposed on the pump housing 100, a liquid inlet end of the impeller 200 is disposed opposite to the liquid inlet 110 at a distance, and a receiving cavity 120 is formed between the liquid inlet end and an inner wall surface of the pump housing 100; the sealing ring 300 is arranged in the accommodating cavity 120 and is abutted against the inner wall surface of the pump shell 100; the wear-resistant pad 400 is arranged between the sealing ring 300 and the liquid inlet end of the impeller 200, the wear-resistant pad 400 is arranged outside the impeller 200, and the sealing ring 300 and the wear-resistant pad 400 are mutually matched and seal a gap between the liquid inlet end of the impeller 200 and the inner wall surface of the pump shell 100.

It is understood that the sealing ring 300 is disposed in a ring shape, one end of the sealing ring 300 abuts against the inner wall surface of the pump casing 100 at the liquid inlet 110, alternatively, the sealing ring 300 may be made of an elastic material, such as, but not limited to, a rubber material, or a silicone material; the shape of the wear pad 400 is not limited herein, and the wear pad 400 may be annular, or may be arc-shaped, or the like, and only the wear pad 400 is required to be arranged between the liquid inlet ends of the impeller 200 and the seal ring 300 in a pad manner, and can cooperate with the seal ring 300 to seal a gap between the impeller 200 and the pump body, so that liquid discharged from the impeller 200 cannot flow back into the impeller 200 through the gap between the impeller 200 and the pump body.

Further, the wear-resistant pad 400 is arranged outside the impeller 200, that is, the wear-resistant pad 400 is abutted with the outer end face of the liquid inlet end of the impeller 200, so that the wear-resistant pad 400 is directly abutted and sealed with the impeller 200, the structure of the wear-resistant pad 400 is simple, and the production and assembly procedures of the wear-resistant pad 400 are simplified. The wear pad 400 is made of a wear-resistant material, which may be ceramic, or a metal material, and the like, and is not limited herein.

The electronic water pump 10 of the utility model comprises a pump body 11, a sealing ring 300 and a wear-resistant pad 400, wherein the pump body 11 comprises a pump shell 100 and an impeller 200, the impeller 200 is arranged in the pump shell 100, a containing cavity 120 is formed between the liquid inlet end of the impeller 200 and the inner wall surface of the pump shell 100, the sealing ring 300 is arranged in the containing cavity 120 and is abutted with the inner wall surface of the pump shell 100, the wear-resistant pad 400 is arranged between the sealing ring 300 and the liquid inlet end of the impeller 200, the wear-resistant pad 400 is arranged outside the impeller 200, and the sealing ring 300 and the wear-resistant pad 400 are mutually matched and seal the gap between the liquid inlet end of the impeller 200 and the inner wall surface of the pump shell 100, so that liquid discharged from an impeller runner of the impeller 200 cannot flow back to the liquid inlet end of the impeller 200 through the gap between the impeller 200 and the pump shell 100, namely, the liquid discharged from the impeller 200 is prevented from flowing back into the impeller 200, and flow loss during operation of the impeller 200 is avoided, and the working efficiency of the electronic water pump 10 can be improved; in addition, the wear-resistant pad 400 has better wear-resistant performance, so that the occurrence of the condition that the impeller 200 leaks due to the abrasion of the wear-resistant pad 400 is reduced, and the stability of the operation of the electronic water pump 10 is improved.

Referring to fig. 3 to 6, in an embodiment, a first end surface 410 of the wear pad 400 abuts against a second end surface of the impeller 200, and an antifriction portion 420 is disposed on the first end surface 410 and/or the second end surface.

It may be appreciated that the wear pad 400 has a first end surface 410, the impeller 200 has a second end surface, the second end surface is located at the liquid inlet end of the impeller 200, and the first end surface 410 abuts against the second end surface, that is, the first end surface 410 of the wear pad 400 is opposite to and abuts against the second end surface of the liquid inlet end of the impeller 200, and the first end surface 410 may be provided with a wear reducing portion 420, and/or the second end surface may be provided with a wear reducing portion 420, that is, the first end surface 410 is provided with a wear reducing portion 420; or, the second end face is provided with an antifriction part 420; alternatively, the first end surface 410 and the second end surface are provided with the antifriction part 420; the antifriction part 420 is used to reduce the frictional resistance between the antifriction pad 400 and the impeller 200, and the antifriction part 420 includes, but is not limited to, a antifriction groove 430, a antifriction hole, a antifriction ring, and the like, and only needs to reduce the frictional resistance between the antifriction pad 400 and the impeller 200. The friction resistance between the wear pad 400 and the impeller 200 is reduced, namely the resistance of the rotation of the impeller 200 is reduced, by arranging the antifriction part 420, so that the smoothness of the rotation of the impeller 200 is improved, and the working efficiency of the electronic water pump 10 is improved.

In one embodiment, the wear reduction portion 420 includes at least one of a wear reduction groove 430, a wear reduction hole, and a wear reduction ring. It should be understood that the specific shapes and numbers of the antifriction slots 430, the antifriction holes and the antifriction rings are not limited herein, and only the antifriction slots 430, the antifriction holes and the antifriction rings need to reduce the contact area of the abutting end surfaces, the contact area of the wear pad 400 abutting the impeller 200 is reduced, and the frictional resistance during rotation of the impeller 200 can be reduced, so that the smoothness of rotation of the impeller 200 is improved.

Referring to fig. 5 and 6, in an embodiment, the first end surface 410 of the wear pad 400 is provided with a wear-reducing portion 420, and the wear-reducing portion 420 includes a plurality of wear-reducing grooves 430, and the plurality of wear-reducing grooves 430 are arranged at intervals on the first end surface 410. It can be appreciated that, compared to providing the wear reduction groove 430 on the impeller 200, it is easier to provide the wear reduction groove 430 on the first end surface 410 of the wear pad 400, that is, the present solution provides the wear reduction groove 430 on the first end surface 410 of the wear pad 400, so as to reduce the processing difficulty of the wear reduction groove 430; in addition, the contact area between the wear pad 400 and the impeller 200 is further reduced by providing a plurality of wear-reducing grooves 430, and the plurality of wear-reducing grooves 430 may be sequentially arranged at intervals on the first end surface 410; of course, the materials may be arranged at intervals as needed, and are not limited herein.

In one embodiment, the wear pad 400 is disposed in a ring shape, and one end of the wear reduction groove 430 penetrates through the inner wall surface of the wear pad 400. It is understood that the antifriction slots 430 are provided on the first end face 410 of the wear pad 400, and that the antifriction slots 430 may be provided in a strip-like configuration, or in other configurations. In this embodiment, the antifriction slots 430 are disposed in a strip shape and extend along the radial direction of the wear pad 400, and one end of the antifriction slots 430 penetrates through the inner wall surface of the wear pad 400, and the antifriction slots 430 are sequentially arranged at intervals on the first end surface 410, so that the wear pad 400 provided with the antifriction slots 430 has a regular structure, so that not only the friction resistance between the wear pad 400 and the impeller 200 can be reduced, but also the stability of the contact between the impeller 200 and the wear pad 400 can be improved.

In an embodiment, the sealing ring 300 includes a first sealing portion and a second sealing portion that are annularly disposed, the second sealing portion is disposed on a side of the first sealing portion facing away from the liquid inlet 110, and an outer diameter of the second sealing portion is smaller than an outer diameter of the first sealing portion. So set up, when second sealing part locates in holding chamber 120, second sealing part is difficult by extrusion deformation, has avoided sealing washer 300 by extrusion deformation and the condition emergence of clearance appears between the internal face of pump case 100 to set up first sealing part and second sealing part, be favorable to improving sealed effect.

In an embodiment, a limiting groove adapted to the second sealing portion is formed in the accommodating cavity 120, and an outer diameter of the second sealing portion and a notch width of the limiting groove are tapered from the liquid inlet 110 toward the impeller 200.

It can be appreciated that the accommodating cavity 120 is formed with a limiting groove, and the width of the notch of the limiting groove is gradually reduced from the liquid inlet 110 towards the impeller 200, so that the limiting groove can limit the sealing ring 300 in the accommodating cavity 120, and the sealing ring 300 is not easy to move along the direction of the liquid inlet 110 towards the impeller 200 in the accommodating cavity 120. And, the external diameter of second sealing portion and the notch width adaptation of spacing groove, the external diameter of second sealing portion is the convergent setting for can closely with the interior wall surface butt laminating of pump case 100 when second sealing portion is spacing in the spacing groove, the circumstances emergence of clearance appears between the serious deformation of atress and the interior wall surface of pump case 100 can not appear in the second sealing portion, so is favorable to improving sealed tightness.

In one embodiment, the impeller 200 includes an impeller cover and a plurality of blades disposed on the impeller cover, the impeller cover and the plurality of blades are integrally formed, the pump body 11 further includes a rotor assembly 32, the impeller 200 is detachably mounted on a mounting plate 303 of the rotor assembly 32, and the rotor assembly 32 is in driving connection with the impeller 200.

It will be appreciated that the integrally formed arrangement of the impeller cover and the plurality of blades is not only advantageous for simplifying the manufacturing and assembly process of the impeller 200, but also for increasing the structural strength of the impeller 200. The pump main body 11 further comprises a motor assembly 30, the motor assembly 30 comprises a stator assembly 31 and a rotor assembly 32, the impeller 200 is driven to rotate by the rotor assembly 32, a mounting plate 303 is arranged at one end, close to the liquid inlet 110, of the rotating assembly, and the impeller 200 is detachably mounted on the mounting plate 303, so that convenience in assembling and disassembling the impeller 200 is improved; the specific construction of the motor assembly 30 is described in detail below.

Referring to fig. 3, 4 and 10, in an embodiment, the pump main body 11 further includes a rotor assembly 32 and a main shaft 33, the rotor assembly 32 includes a sleeve 304 sleeved on the periphery of the main shaft 33 and a rotor body 305 sleeved on the periphery of the sleeve 304, one end of the rotor body 305 near the liquid inlet 110 is provided with a mounting plate 303, the impeller 200 is disposed on the mounting plate 303, a first runner groove 306 is disposed on an inner peripheral wall of the sleeve 304, and the first runner groove 306 is in communication with an impeller runner of the impeller 200.

It will be appreciated that mounting plate 303 is attached to an end of sleeve 304 adjacent impeller 200, and impeller 200 is removably attached to mounting plate 303. The liquid can flow along the first flow channel 306, and the liquid can be a cooling liquid, that is, the cooling liquid can flow along the first flow channel 306 and exchange heat with the rotor body 305 and the main shaft 33 near the first flow channel 306, and along with the continuous flow of the cooling liquid, heat generated by the rotor assembly 32 can be taken away. In this embodiment, the pump housing 100 is further provided with a water outlet, and the liquid discharged from the impeller flow channel of the impeller 200 can flow back into the impeller flow channel along the first flow channel 306 after passing through the rotor assembly 32, and then is discharged from the water outlet to the outside, so as to achieve the purpose of cooling the electronic water pump 10.

Optionally, the first runner groove 306 is a straight groove, or a chute, or a spiral groove along the axial direction of the main shaft 33. That is, the specific arrangement and shape of the first flow channel 306 is not limited herein, and only the first flow channel 306 can be communicated with the impeller flow channel of the impeller 200; the number of the first flow channels 306 may be set to one, two or more according to actual needs.

Referring to fig. 2 to 4, in an embodiment, the pump body 11 further includes a casing 20, the pump casing 100 is mounted on the casing 20 to form a pump cavity 130, the impeller 200 is disposed in the pump cavity 130, the casing 20 is provided with a cooling fluid channel 202, a fluid inlet end of the cooling fluid channel 202 is communicated with the pump cavity 130, and a fluid outlet end of the cooling fluid channel 202 is communicated with the first fluid channel 306.

It can be appreciated that the impeller 200, the pump body cavity 130, the cooling liquid flow channel 202, the first flow channel groove 306 and the impeller flow channel of the impeller 200 are sequentially communicated, so that the cooling liquid can flow along the flow path sequentially, when the impeller 200 rotates, a high pressure area and a low pressure area are formed in the pump body cavity 130, the liquid inlet port 203 of the cooling liquid flow channel 202 is located in the high pressure area, and the liquid outlet end of the first flow channel groove 306 is located in the low pressure area, so that the pressure generated by the rotation of the impeller 200 can be utilized to generate the power of the circulating flow of the cooling liquid. It should be noted that the electronic water pump 10 of the present application includes, but is not limited to, only one cooling fluid flow path, and the present application may also include other cooling fluid flow paths, which will be described in detail later.

In an embodiment, the pump main body 11 further includes a casing 20, a stator assembly 31 and an electric control component 40, the stator assembly 31 includes a winding coil 301 and a skeleton disposed in the casing 20, the winding coil 301 is wound on the skeleton, and an outgoing line of the winding coil 301 is led out of the casing 20 through a guiding structure and is electrically connected with the electric control component 40 outside the casing 20.

It can be appreciated that the stator assembly 31 further includes a stator core 302, the frame is disposed on the stator core 302, the winding coil 301 is wound on the frame, the frame and the stator core 302 are disposed in the housing 20, the lead wires of the winding coil 301 are guided along the guiding structure on the frame, and led out of the housing 20 from the housing 20, the lead wires disposed outside the housing 20 are directly electrically connected with the electric control member 40 outside the housing 20.

Further, the stator assembly 31 and the casing 20 are in an integral injection molding structure, the winding coil 301 is molded in the casing 20 through an injection molding process, the outgoing lines of the winding coil 301 are arranged in a guiding way through a guiding structure and led out of the casing 20, the outgoing lines in the casing 20 are stably installed, and the outgoing lines outside the casing 20 are directly electrically connected with the electric control 40, so that the assembly process of the electronic water pump 10 is simplified, and the production cost of the electronic water pump 10 is reduced. The guiding structure includes, but is not limited to, a guiding strip, a guiding block, a guiding plate, a guiding through hole, a guiding groove, and the like, so that the lead wire can extend and be led out of the casing 20 to be electrically connected with the electric control part 40. The number of the guide structures may be set as desired, for example, one or more, etc., and is not particularly limited herein.

Referring to fig. 7 to 9, in an embodiment, a swirl structure 24 is disposed at an end of the casing 20 away from the liquid inlet 110, the swirl structure 24 is located on a conveying path of the cooling liquid flow channel 202, and the swirl structure 24 is used for swirling the cooling liquid flowing through.

It can be understood that the casing 20 includes a casing body 21 and a cyclone structure 24, the casing body 21 is provided with a containing groove 201, and a cooling liquid flow channel 202 is arranged in a wall body of the casing body 21; the swirl structure 24 is located on the conveying path of the cooling liquid flow channel 202 and is disposed adjacent to the accommodating groove 201. The receiving groove 201 of the case body 21 may be used to receive electrical devices including, but not limited to, the motor assembly 30, the electrical control member 40, the power supply member, and the like. The motor assembly 30 includes a stator assembly 31 and a rotor assembly 32, in this embodiment, taking an electrical device as the rotor assembly 32 as an example, the rotor assembly 32 is disposed in the accommodating groove 201, and the stator assembly 31 is molded into the wall of the housing body 21 by an insert molding process. A cooling liquid flow passage 202 is arranged in the wall body of the shell body 21, the cooling liquid flow passage 202 is communicated with the pump body cavity 130 of the electronic water pump 10, and cooling liquid conveyed by an external cooling liquid pipeline enters the pump body cavity 130 and is at least partially conveyed to the cooling liquid flow passage 202. The cooling liquid can exchange heat with the motor assembly 30 when flowing in the cooling liquid flow channel 202, so as to achieve the purpose of cooling the motor assembly 30. The rotational flow structure 24 is arranged on the conveying path of the cooling liquid flow channel 202, when the cooling liquid flows through the rotational flow structure 24, the cooling liquid can generate rotational flow under the action of the rotational flow structure 24, and the rotational flow structure 24 is arranged adjacent to the accommodating groove 201, so that the residence time of the cooling liquid near the accommodating groove 201 is prolonged, the heat exchange time of the cooling liquid and the motor assembly 30 is prolonged, and the heat exchange enhancement effect is achieved. The swirling structure 24 includes, but is not limited to, guiding the cooling liquid in the form of a guide rib, a guide groove 208, a guide plate, a spiral structure, and the like, so that the cooling liquid forms swirling flow. The number of stages of the cyclone structure 24 may be set as required, and may be, for example, a single-stage cyclone structure 24, a two-stage cyclone structure 24, or a multi-stage cyclone structure 24, which is not particularly limited herein.

The solution is that a containing groove 201 for containing an electric device is arranged in a shell body 21, a cooling liquid flow channel 202 is arranged in a wall body of the shell body 21, a rotational flow structure 24 is arranged on a conveying path of the cooling liquid flow channel 202, and the rotational flow structure 24 is arranged adjacent to the containing groove 201. In this way, when the cooling liquid circulates in the cooling liquid flow channel 202, the cooling liquid can exchange heat with the electric devices in the accommodating groove 201, and the cooling liquid can take away the heat generated by the electric devices along with the continuous flow of the cooling liquid; and can make the coolant liquid produce the whirl under the effect of whirl structure 24 to prolonged the residence time of coolant liquid near holding tank 201, increased the heat transfer time of coolant liquid and electric device, played the effect of strengthening the heat transfer, in order to further promote the cooling effect of electric device, can effectively avoid electric device temperature to rise too high and become invalid, can effectively ensure the performance stability of electronic water pump 10, extension electronic water pump 10's life.

In an embodiment, the shell body 21 includes a partition 22 and a shell peripheral wall 23 surrounding the periphery of the partition 22 and extending towards one side of the partition 22, the shell peripheral wall 23 and the partition 22 are surrounded to form the accommodating groove 201, the cooling fluid flow channel 202 is disposed in the wall of the shell peripheral wall 23, the cyclone structure 24 is disposed on one side of the partition 22 facing away from the accommodating groove 201, and the cyclone structure 24 is disposed corresponding to the liquid outlet end of the cooling fluid flow channel 202.

It will be appreciated that the partition 22 may be integrally formed with the shell peripheral wall 23 or assembled by an assembly structure. Alternatively, the partition 22 is injection molded integrally with the case peripheral wall 23, which simplifies the manufacturing process and improves the structural strength. The coolant flow passage 202 may be formed of a wall body integral structure of the case peripheral wall 23. The swirl structure 24 may be integrally formed with the partition 22 or may be assembled to the partition 22 by an assembly structure. The shell perisporium 23 encloses with the baffle 22 and closes and form the storage tank 201, and the baffle 22 can be regarded as the diapire of storage tank 201, and compared in shell perisporium 23, the thickness of baffle 22 can be made relatively thinner, and the cyclone structure 24 locates the baffle 22 one side that deviates from storage tank 201 for the cyclone cooling liquid that cyclone structure 24 produced can carry out heat transfer with the electric device in storage tank 201 and/or the shell perisporium 23 better, thereby further promote the cooling effect to electric device.

Referring to fig. 7 to 9, in one embodiment, the swirl structure 24 includes an annular flange 207 extending from a periphery of the partition 22 toward a side facing away from the accommodating groove 201, and a flow guiding groove 208 disposed in the annular flange 207, the flow guiding groove 208 extends between an outer peripheral surface and an inner peripheral surface of the annular flange 207, a liquid inlet end of the flow guiding groove 208 is communicated with the cooling liquid flow channel 202, a liquid outlet end of the flow guiding groove 208 penetrates through the inner peripheral surface of the annular flange 207, and an extending direction of the flow guiding groove 208 is disposed at an included angle with a radial direction of the annular flange 207.

It can be appreciated that after the cooling liquid enters the diversion trench 208 through the cooling liquid flow channel 202, as the extending direction of the diversion trench 208 and the radial direction of the annular flange 207 have a certain included angle, the cooling liquid flowing out of the diversion trench 208 has components in the radial direction and the tangential direction of the annular flange 207 at the same time, and the cooling liquid can gradually flow towards the center along the inner peripheral surface of the annular flange 207 after being output from the liquid outlet end of the diversion trench 208 under the guidance of the diversion trench 208, so as to form a rotational flow, thus prolonging the retention time of the cooling liquid and improving the cooling effect.

In an embodiment, the cooling liquid flow channel 202 has a liquid outlet port 204 that is communicated with the flow guiding groove 208, the central line of the liquid outlet port 204 and the axis of the annular flange 207 are respectively projected to the same projection plane along the axial direction of the annular flange 207, and the projection connecting line of the two is disposed at a first included angle with the extending direction of the flow guiding groove 208, and the first included angle is an acute angle.

It will be appreciated that the coolant flows into the flow guide groove 208 through the liquid outlet port 204 of the coolant flow passage 202, and then flows out from the inner peripheral side of the annular flange 207 through the flow guide groove 208, and the first angle is an acute angle, that is, the first angle is greater than 0 degrees and smaller than 90 degrees, so that the velocity of the coolant has a component in the radial direction of the annular flange 207 to enable the coolant to flow toward the center of the annular flange 207, and at the same time, the velocity of the coolant has a component in the tangential direction of the annular flange 207 to enable the coolant to have a tendency to flow along the inner periphery of the annular flange 207, thereby forming a primary swirl flow to ensure the cooling effect of the coolant. Wherein, the first contained angle sets up to be less than 70 degrees acute angles and is suitable, so, can ensure the whirl effect of one-level whirl to effectively prolong the time that the coolant liquid flows near holding groove 201, with the cooling effect of guarantee coolant liquid.

In an embodiment, the diversion trench 208 has two side trench walls disposed opposite to each other in the circumferential direction of the shell peripheral wall 23, and a trench opening penetrating through the inner peripheral surface of the annular flange 207, where the two side trench walls are disposed at a second included angle, and the distance between the two side trench walls is disposed gradually expanding in a direction approaching the trench opening. In this embodiment, after the cooling liquid flows through the diverging diversion trench 208, the flow speed will be improved, so that the heat convection coefficient between the cooling liquid and the electrical device can be improved, so as to further improve the heat absorption effect of the cooling liquid, and further ensure the cooling effect of the cooling liquid on the electrical device. Wherein, the angular bisector of second contained angle is the extending direction of guiding gutter 208, the second contained angle sets up to be less than 20 degrees acute angles and should be the case, so, can make the coolant liquid jet out from the notch with higher velocity of flow, can also guarantee simultaneously that the coolant liquid that jets out through guiding gutter 208 can produce better whirl effect to further promote the cooling effect of coolant liquid to the electric device.

To further enhance the swirling effect of the cooling liquid, in one embodiment, the annular flange 207 is provided with at least two flow guiding grooves 208 at intervals along the circumferential direction. So, can form the one-level whirl of multistrand syntropy through a plurality of guiding grooves 208, the one-level whirl of multistrand can be superimposed into more violent whirl, and can not cut down each other, and the one-level whirl of multistrand can be along annular flange 207's inner peripheral rotation, is favorable to guaranteeing the whirl effect of one-level whirl to promote the cooling effect of coolant liquid.

In an embodiment, a containing groove 201 is formed on the housing body 21, the pump housing 100 is connected with the housing body 21 to cover the notch of the containing groove 201, the pump housing 100 is internally provided with a pump cavity 130, the pump housing 100 is further provided with a liquid inlet 110 and a liquid outlet 140 respectively communicated with the pump cavity 130, a cooling liquid flow channel 202 is formed in the wall of the housing body 21, and a liquid inlet 203 of the cooling liquid flow channel 202 is communicated with the pump cavity 130. The impeller 200 is arranged in the pump cavity 130, the motor assembly 30 comprises a stator assembly 31 and a rotor assembly 32, the rotor assembly 32 is arranged in the accommodating groove 201, the rotor assembly 32 is in driving connection with the impeller 200, and the impeller 200 is driven to move through the rotor assembly 32, so that the electronic water pump 10 can suck cooling liquid into the pump cavity 130 through the liquid inlet 110 and pump the cooling liquid out through the liquid outlet 140. Meanwhile, the impeller 200 moves to generate a certain pressure in the pump body cavity 130, so that a part of cooling liquid in the pump body cavity 130 can enter the cooling liquid flow channel 202 through the liquid inlet 203, and is conveyed to the rotational flow structure 24 through the cooling liquid flow channel 202 to form rotational flow, so that the rotor assembly 32 in the accommodating groove 201 and the stator assembly 31 in the shell body 21 are cooled.

Optionally, the shell body 21 is provided with a liquid passing hole 206, and the cooling liquid conveyed by the cooling liquid flow channel 202 enters the accommodating groove 201 from the liquid passing hole 206 after forming a rotational flow through the rotational flow structure 24, so that the cooling liquid can enter the accommodating groove 201 to further exchange heat with the rotor assembly 32, thereby further improving the cooling effect, and the cooling liquid after heat exchange flows back to the pump body cavity 130 from the accommodating groove 201, thus realizing the circulating flow of the cooling liquid and further improving the cooling effect. The rotor assembly 32 includes a main shaft 33, a sleeve 304 sleeved on the periphery of the main shaft 33, and a rotor sleeved on the periphery of the sleeve 304, the stator assembly 31 is disposed in the housing body 21, the rotor is fixedly connected with the impeller 200, and the impeller 200 is driven to rotate by the rotation of the rotor, so that the electronic water pump 10 generates power for driving the coolant to flow.

It will be appreciated that the electronic water pump 10 generally has an electrical control 40 (e.g., a PCB control board), and the electrical control 40 generates a large amount of heat when the electronic water pump 10 is operated, and in order to enhance the cooling effect on the electrical control 40, in one embodiment, the electrical control 40 is disposed adjacent to the cyclone structure 24. In this way, the cooling liquid generates rotational flow when flowing through the rotational flow structure 24, and can exchange heat with the adjacent electric control part 40 sufficiently, so that the cooling effect on the electric control part 40 is improved, and the failure of the electric control part 40 due to overhigh temperature rise is avoided. Of course, in some embodiments, the electrical control 40 may be disposed on the outer side surface of the housing body 21, and the electrical control 40 may be cooled by the cooling liquid in the cooling liquid channel 202 in the wall of the housing body 21.

It will be appreciated that, when the rotor assembly 32 is assembled in the accommodation groove 201, the coolant that has entered the accommodation groove 201 via the liquid passing hole 206 flows upward at the gap between the outer peripheral surface of the electric device and the inner peripheral surface of the case peripheral wall 23, and in order to reduce the flow resistance of the coolant, the inner peripheral surface of the case peripheral wall 23 is optionally provided with a second flow passage groove 205, one end of which second flow passage groove 205 communicates with the liquid passing hole 206, and the other end of which second flow passage groove 205 penetrates the side end surface of the case peripheral wall 23 remote from the partition plate 22. In this way, the cooling liquid can flow up to the end surface of the shell peripheral wall 23 along the second flow channel 205 and flow out after entering the accommodating groove 201 through the liquid passing hole 206, thereby improving the cooling effect. The number of the second flow channel grooves 205 is matched with the number of the through holes 206.

Referring to fig. 4, in an embodiment, the casing 20 further includes a heat conducting plate 50, the heat conducting plate 50 is disposed on a side of the casing body 21 where the cyclone structure 24 is disposed, the heat conducting plate 50 is disposed opposite to the cyclone structure 24, the electric control 40 is fixed on a side of the heat conducting plate 50 facing away from the cyclone structure 24, and the lead-out wires of the winding coil 301 extend out of the casing body 21 and are electrically connected with the electric control 40. Thus, when the cooling liquid flows through the cyclone structure 24, the heat generated by the electric control 40 can be conducted to the cooling liquid through the heat conducting plate 50, so that the heat exchange between the cooling liquid and the electric control 40 is realized, and the cooling liquid can generate cyclone under the action of the cyclone structure 24, so that the cooling effect on the electric control 40 is further improved.

To further enhance the heat dissipation effect, optionally, a heat dissipation structure is disposed on a side of the heat conducting plate 50 facing the cyclone structure 24. Specifically, the heat dissipation structure may include a plurality of heat dissipation ribs arranged at intervals along the circumferential direction of the heat conduction plate 50. Optionally, a plurality of heat dissipation muscle extend to form certain spiral direction towards the slope of same direction, can further promote the whirl effect.

Optionally, the pump body 11 further includes a sealing member 61 sleeved on the periphery of the heat conducting plate 50, the swirl structure 24 has an annular flange 207, and the heat conducting plate 50 is connected with the inner peripheral surface of the annular flange 207 in a sealing manner through the sealing member 61, so that leakage of the cooling liquid to the area where the electric control member 40 is located through a gap between the heat conducting plate 50 and the annular flange 207 can be avoided, and use safety of the electric control member 40 is ensured.

Optionally, the pump main body 11 further includes an end cover 60 connected to the casing body 21, and a receiving cavity for receiving the electric control element 40 is defined between the end cover 60 and the heat conducting plate 50, so that a safety protection effect can be provided for the electric control element 40. To facilitate connection of the electrical control 40 to an external circuit, the end cap 60 is optionally also provided with a via corresponding to a terminal of the electrical control 40.

The utility model also provides a vehicle, which comprises the electronic water pump 10, wherein the specific structure of the electronic water pump 10 refers to the embodiment, and the vehicle adopts all the technical schemes of all the embodiments, so that the vehicle has at least all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An electronic water pump, comprising:

2. The electronic water pump of claim 1, wherein a first end surface of the wear pad abuts against a second end surface of the impeller, and wherein an antifriction portion is provided on the first end surface and/or the second end surface.

3. The electronic water pump of claim 2, wherein the antifriction portion includes at least one of a antifriction groove, a antifriction hole, and a antifriction ring.

4. The electronic water pump of claim 2, wherein the wear pad has a wear-reducing portion on a first end surface thereof, the wear-reducing portion including a plurality of wear-reducing grooves, the plurality of wear-reducing grooves being spaced apart on the first end surface.

5. The electronic water pump of claim 4, wherein the wear pad is disposed in a ring shape, and one end of the wear reduction groove penetrates an inner wall surface of the wear pad.

6. The electronic water pump of claim 1, wherein the sealing ring comprises a first sealing portion and a second sealing portion which are annularly arranged, the second sealing portion is arranged on one side of the first sealing portion, which is away from the liquid inlet, and the outer diameter of the second sealing portion is smaller than the outer diameter of the first sealing portion.

7. The electronic water pump of claim 6, wherein a limiting groove adapted to the second sealing portion is formed in the accommodating cavity, and an outer diameter of the second sealing portion and a notch width of the limiting groove are tapered from the liquid inlet toward the impeller.

8. The electronic water pump of any one of claims 1 to 7, wherein the impeller includes an impeller cover and a plurality of vanes provided on the impeller cover, the impeller cover and the plurality of vanes being integrally formed, the pump body further including a rotor assembly, the impeller being removably mounted to a mounting plate of the rotor assembly, the rotor assembly being drivingly connected to the impeller.

9. The electronic water pump of any one of claims 1 to 7, wherein the pump body further comprises a rotor assembly and a main shaft, the rotor assembly comprises a shaft sleeve sleeved on the periphery of the main shaft and a rotor body sleeved on the periphery of the shaft sleeve, a mounting plate is arranged at one end, close to the liquid inlet, of the rotor body, the impeller is arranged on the mounting plate, a first runner groove is arranged on the inner peripheral wall of the shaft sleeve, and the first runner groove is communicated with an impeller runner of the impeller.

10. The electronic water pump of claim 9, wherein the first flow channel groove is a straight groove, or a chute, or a spiral groove along an axial direction of the main shaft.

11. The electronic water pump of claim 9, wherein the pump body further comprises a housing, the pump housing is mounted on the housing to form a pump cavity, the impeller is disposed in the pump cavity, a cooling fluid flow passage is disposed on the housing, a fluid inlet of the cooling fluid flow passage is communicated with the pump cavity, and a fluid outlet of the cooling fluid flow passage is communicated with the first fluid channel.

12. The electronic water pump of claim 11, wherein a swirl structure is provided at an end of the housing remote from the inlet, the swirl structure being located on a delivery path of the coolant flow passage, the swirl structure being configured to swirl the coolant flowing therethrough.

13. A vehicle comprising an electronic water pump according to any one of claims 1 to 12.