CN116241458A

CN116241458A - Pump assembly and vehicle

Info

Publication number: CN116241458A
Application number: CN202111486124.1A
Authority: CN
Inventors: 付威; 葛笑; 孙冬冬; 黄瀚平
Original assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Current assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2023-06-09

Abstract

The application provides a pump assembly and vehicle, pump assembly includes the box, cross the liquid passageway, casing and pump rotor, the box is including holding the chamber, cross the liquid passageway and establish on the box, cross the liquid passageway and hold the chamber intercommunication, the casing is connected on the box, has the pump chamber between casing and the box, pump chamber and cross the liquid passageway intercommunication, pump rotor is located the pump intracavity, pump rotor can be for the casing motion to make working medium hold chamber, cross liquid passageway and pump intracavity circulation. The pump assembly in this application adopts casing and box to connect in order to constitute the pump chamber that is used for holding pump rotor, and the box not only has self basic action, can also form the effect of pump chamber with the casing, and the box has dual effect promptly, and the integrated level is high, low cost reduces the quantity of spare part to in order to simplify the overall structure of pump assembly.

Description

Pump assembly and vehicle

Technical Field

The present application relates to the technical field of pump assemblies, and in particular, to a pump assembly and a vehicle.

Background

At present, the pump comprises a shell and a pump cover, the shell and the pump cover are connected together to form a pressurizing cavity, a rotor is arranged in the pressurizing cavity, the rotor runs in the pressurizing cavity to complete the pressurizing process of working medium, and a runner communicated with the pressurizing cavity is arranged on the pump cover and is used for circulating the working medium.

Although the pump cover can be used to form the pressurizing chamber and can also play a role in forming the flow channel, the pump cover, as an independent component, not only causes an increase in production cost, but also causes a decrease in assembly efficiency due to the assembly requirement of the pump cover and the casing, and slows down the tact.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, a first aspect of the present application is directed to a pump assembly.

A second aspect of the present application is directed to a vehicle.

In view of this, according to a first aspect of the present application, there is provided a pump assembly comprising a housing including a receiving chamber, a liquid passage provided on the housing, a housing communicating with the receiving chamber, the housing being connected to the housing, a pump chamber provided between the housing and the housing, the pump chamber communicating with the liquid passage, a pump rotor located in the pump chamber, the pump rotor being movable relative to the housing to circulate a working medium in the receiving chamber, the liquid passage and the pump chamber.

The application provides a pump assembly, including box, crossing liquid passageway, casing and pump rotor, the box is including holding the chamber, crosses liquid passageway and establishes on the box, crosses liquid passageway and holds the chamber intercommunication each other. The casing is connected on the box, has the pump chamber between casing and the box, and pump chamber and cross liquid passageway intercommunication, and pump rotor is located the pump intracavity, and pump rotor can be for the casing motion to make the working medium in the pump chamber pressurized, then at pump chamber, cross liquid passageway, hold the intracavity circulation.

It is worth to say that the box can be the gearbox, and the accommodation chamber of gearbox holds to hold and has had the variable speed subassembly, and the working medium is grease, or, the box is the water tank, and the accommodation chamber of water tank holds to hold and has had water, and the working medium is water. The basic function of the box body is the function of the self-accommodating cavity, and is used for accommodating the speed changing component or the working medium.

The pump assembly in this application adopts casing and box to connect in order to constitute the pump chamber that is used for holding pump rotor, and the box not only has self basic action, can also form the effect of pump chamber with the casing, and the box has dual effect promptly, and the integrated level is high, low cost reduces the quantity of spare part to in order to simplify the overall structure of pump assembly. Compared with the scheme that the casing and the pump cover form the pressurizing cavity in the related art, the pump cover structure is omitted in the method, the number of parts is reduced, the weight of the whole machine is reduced, the production cost is reduced, the assembly requirement of the pump cover and the casing does not exist, the assembly efficiency can be effectively improved, and the production beat is accelerated.

Meanwhile, in the related art, after the casing and the pump cover of the pump are assembled, the casing, the pump cover and the component to be assembled occupy a part of axial height for the whole product. However, in the pump assembly of the application, the casing is directly connected with the box body to form a pump cavity, and after the pump cover in the related art is removed, the normal operation of the pump rotor can be realized, the overall axial height of the product can be effectively reduced, and the pump assembly is suitable for the development trend of thinning and miniaturization.

In one possible design, further, a portion of the housing is recessed in a direction away from the housing to form a pump chamber.

In this design, along the direction that deviates from the casing, the partly sunken pump chamber that forms of box, that is to say, the box is single to be deformed in order to constitute the pump chamber, and the structure of casing need not make too much change, only need install on the box can for original pump product only need stop processing pump cover can be applied to on the new product, and the universal range is wider.

It can be thought that, because of high manufacturing cost of the pump product, the structure of the casing is not changed or changed as little as possible by improving the structure of the casing to form the pump cavity by surrounding the casing in the design, so that the casing and the like on the original production line can be continuously used.

In this design, along the direction that deviates from the box, the sunken pump chamber that forms of a part of casing, that is to say, the casing is deformation alone in order to form the pump chamber, and the structure of box need not make too much change, only need accomplish fixed mounting casing with the casing, and the structural requirement to the box is lower, promotes the application scope of box.

In one possible design, the pump chamber further comprises a first chamber and a second chamber in communication, a portion of the housing being recessed in a direction away from the housing to form the first chamber, and a portion of the housing being recessed in a direction away from the housing to form the second chamber.

In this design, the pump chamber includes first cavity and second cavity, and first cavity and second cavity communicate each other, and first cavity is located on the casing, and the casing is located to the second cavity, that is to say, the casing has formed a part of pump chamber respectively for casing and casing are the formation of pump chamber and make the adaptation change, avoid one of casing and casing alone to form the pump chamber and probably can put forward higher requirement to processing technology, cause the great problem of preparation degree of difficulty. Meanwhile, in the motion process of the pump rotor, part of the box body and part of the shell can be in contact with the pump rotor so as to provide a limit function for the pump rotor, and the box body and the shell act together, so that stable motion of the pump rotor can be further ensured.

In one possible design, further, one of the case and the housing has a limit groove, and a portion of the other of the case and the housing extends into the limit groove.

In this design, considering that the pump rotor rotates in the pump chamber formed by the casing and the housing, in order to ensure the reliable connection performance of both the casing and the housing, a limit groove is provided on one of the casing and the housing, a notch of the limit groove faces the other of the casing and the housing, and a part of the other of the casing and the housing extends into the limit groove, so that the casing and the housing are reliably connected, and when the pump rotor rotates in the pump chamber, the connection performance between the casing and the housing is excellent, and the two cannot relatively displace along with the movement of the pump rotor.

Specifically, the limit groove is arranged on the box body, and one part of the shell can extend into the limit groove on the box body, and the limit groove are matched with each other to realize stable position. Or the limit groove is formed in the shell, and one part of the box body can extend into the limit groove in the shell, so that the position between the box body and the shell is determined.

In one possible design, further, a limit slot is provided on the housing, a portion of the housing extending toward the housing to form a limit flange, the limit flange being located within the limit slot.

In the design, the limit groove is arranged on the box body, and the notch of the limit groove is arranged towards the machine shell, so that the machine shell and the box body can be assembled conveniently. Wherein, a part of the casing extends towards the casing to form a limit flange, and the limit flange is positioned in the limit groove, thereby realizing the positioning and installation of the casing and the casing.

Wherein, it should be noted that, setting up of spacing groove and limit flange can realize the pre-positioning function between box and the casing, also can realize locking function, adjusts the specific structure of spacing groove and limit flange according to actual demand.

For example, if the preset function is realized, the limit flange can be extended into the limit groove and then locked by other locking structures, and when the locking structures are not locked, the limit flange can be separated from the limit groove.

If the limit groove and the limit flange can realize the locking function, once the limit flange stretches into the limit groove, the limit flange cannot be separated from the limit groove, and the limit groove and the limit flange are mutually meshed so as to enable the box body to be tightly combined with the machine shell, and the overall structural stability of the pump assembly is ensured.

Further, the limit groove may be an annular groove, and the limit flange is an annular boss. Or, the limit groove can be a plurality of groove bodies which are distributed at intervals, and correspondingly, the limit flange is a plurality of bosses, and each boss is correspondingly arranged in one groove body. Wherein, a plurality of bosss can be the asymmetric form setting, and correspondingly, the spacing groove is also laid on the box in the asymmetric form, can ensure the accurate assembly of box and casing, does not have the dress and inclines or misplaces the possibility.

In one possible design, the housing further has a mounting surface in contact with the housing. The pump assembly further includes a seal disposed between the mounting surface of the housing and the housing.

In this design, because the pump chamber is located between box and casing, under the effect of pump rotor, the working medium can accomplish the pressurization process in the pump chamber, and it has the possibility of leaking along the gap between box and the casing for the working medium, therefore is equipped with the sealing member between box and casing, and the sealing member can prevent the working medium leakage loss in the pump chamber, avoids influencing pumping efficiency.

The sealing element can be a sealing ring, a sealing gasket, glue coating sealing and the like.

In one possible design, further, a portion of one of the housing and the case is recessed toward a direction away from the other of the housing and the case to form a seal groove, the seal being located within the seal groove.

In this design, the case has a mounting surface that is capable of contacting the housing, and a portion of the housing is recessed in a direction away from the mounting surface, thereby forming a seal groove, or alternatively, a portion of the mounting surface of the case is recessed in a direction away from the housing, thereby forming a seal groove. A part of the sealing element is positioned in the sealing groove, so that the accurate positioning and installation of the sealing element are realized, and the sealing element can be prevented from moving between the shell and the box body to cause the possibility of sealing failure.

The sealing groove is formed in one part of the shell, and the shell is small in size relative to the box body, so that the processing is convenient.

It should be noted that, a part of the sealing member is located in the sealing groove, and a part of the sealing member is extruded between the box body and the casing, so that reliable sealing performance can be provided, working medium in the pump cavity is ensured not to leak, and pumping efficiency is ensured.

In one possible design, further, the mounting surfaces include first and second angled mounting surfaces. The seal member includes a first seal portion and a second seal portion, the first seal portion being located between the first mounting face and the housing, the second seal portion being located between the second mounting face and the housing.

In this design, the mounting surface of the case includes a first mounting surface and a second mounting surface, and an included angle is formed between the first mounting surface and the second mounting surface, that is, the first mounting surface and the second mounting surface are not coplanar. A first sealing part is arranged between the first mounting surface and the casing, a second sealing part is arranged between the second mounting surface and the casing, and the first sealing part and the second sealing part can form a double sealing barrier.

For example, when the working medium in the pump chamber leaks along the first mounting surface, the working medium first encounters the obstruction of the first sealing portion, when the working medium fails to be obstructed by the first sealing portion, and when the working medium fails to be obstructed by the first sealing portion, the working medium continues to leak along the first mounting surface, and when the working medium extends from the first mounting surface to the second mounting surface, the working medium first overcomes the resistance caused by the angle, and at the same time, the working medium is difficult to extend to the second mounting surface, and at the same time, the second sealing portion is also provided to block the working medium, so that under the double barrier of the first sealing portion and the second sealing portion, the working medium is unlikely to leak from the gap between the box and the casing.

In one possible design, the liquid passing channel further comprises a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is arranged on the box body, and the liquid inlet channel is respectively communicated with the pump cavity and the containing cavity. The liquid outlet channel and the liquid inlet channel are arranged on the box body at intervals, and the liquid outlet channel is respectively communicated with the pump cavity and the accommodating cavity.

In this design, the liquid passage includes that the interval is established feed liquor passageway and the drain passageway on the box, feed liquor passageway and drain passageway communicate with pump chamber and hold the chamber respectively, and the working medium can get into the pump intracavity through the feed liquor passageway, is pressurized after passing through the effect of pump rotor in the pump chamber, and the working medium after the pressurization can get back to hold the intracavity through the drain passageway.

When the box body is a gearbox, low-pressure grease enters the pump cavity through the liquid inlet channel, the pressurizing process is completed under the action of the pump rotor to form pressurized grease, and the pressurized grease is conveyed into the accommodating cavity from the pump cavity through the liquid outlet channel so as to lubricate the speed changing assembly in the accommodating cavity.

When the tank body is a water tank, low-pressure water enters the pump cavity through the liquid inlet channel, and then the pressurization process is completed under the action of the pump rotor to form high-pressure water, and the high-pressure water is conveyed into the accommodating cavity from the pump cavity through the liquid outlet channel.

In one possible design, further, the extension direction of the inlet channel coincides with the extension direction of the outlet channel.

In the design, the extending direction of the liquid inlet channel is the same as the extending direction of the liquid outlet channel, namely, the liquid inlet channel and the liquid outlet channel are both axially extended and arranged on the box body, or the liquid inlet channel and the liquid outlet channel are both radially extended and arranged on the box body. Can be adjusted adaptively according to the arrangement requirement of a pump cavity formed between the shell and the box body.

In one possible design, the liquid inlet channel extends in an angle to the liquid outlet channel.

In this design, the extending direction of the liquid inlet channel is different from the extending direction of the liquid outlet channel, and an included angle is formed between the extending direction of the liquid inlet channel and the extending direction of the liquid outlet channel, for example, one of the liquid inlet channel and the liquid outlet channel extends along the axial direction, and the other of the liquid inlet channel and the liquid outlet channel extends along the radial direction. Specifically, the liquid inlet channel extends along the axial direction, the liquid outlet channel extends along the radial direction,

in one possible design, the pump assembly further comprises a filter arranged in the outlet channel and/or the inlet channel.

In this design, pump assembly still includes the filter, and the filter is established in the drain passage, and when the working medium after the pressurization flowed by the pump chamber to holding the chamber, the filter can filter the impurity in the working medium after the pressurization, avoids impurity to get into holding the intracavity.

Further, the filter is also arranged in the liquid inlet channel, so that impurities in the low-pressure working medium in the accommodating cavity are prevented from flowing into the pump cavity through the liquid inlet channel, and damage to the pump rotor is avoided, so that the normal pressurizing process of the working medium is directly influenced.

Further, the filter is not only arranged in the liquid inlet channel but also arranged in the liquid outlet channel, the arrangement of the filter can enable the accommodating cavity and the pump cavity to serve as two relatively independent cavities, only the working medium is allowed to smoothly flow in the two cavities, all other impurities are not allowed to circulate between the accommodating cavity and the pump cavity, once one of the accommodating cavity and the pump cavity generates impurities due to long-term operation, the impurities can remain in the cavity all the time, and cannot circulate to the other cavity through the liquid passing channel, so that the service life of the pump assembly can be prolonged.

In one possible design, the pump assembly further comprises a drive section provided on the housing, the drive section being located on a side of the pump rotor facing away from the housing, the drive section being connected to the pump rotor, wherein the pump rotor comprises a gear rotor or impeller.

In this design, the pump assembly still includes drive division, and drive division establishes on the casing, and drive division is located the pump rotor and deviates from one side of box, and drive division links to each other with the pump rotor, and drive division is used for driving the pump rotor rotatory for the casing to pressurize the working medium in the pump chamber.

Specifically, the driving part is a motor, a driving shaft of the motor is connected with the pump rotor, and the driving shaft can drive the pump rotor to rotate. Because the pump rotor is located between casing and the box, drive part is located the inside of casing, that is to say, the pump rotor is located the outside of casing, is equipped with the shaft hole that is used for the drive shaft to stretch out on the casing, and stator and the rotor of motor are located the inside of casing, and a part of drive shaft is located the casing inside, and another part of drive shaft stretches out and cooperates with the pump rotor via the shaft hole to drive the pump rotor and move in the pump chamber. Wherein, the casing is integrated into one piece structure, and structural reliability is stronger.

Specifically, the pump rotor includes a gear rotor, and the working medium is grease. Specifically, the gear rotor comprises an inner gear and an outer gear, the inner gear is matched with the driving shaft, the outer gear is arranged on the outer side of the inner gear, the inner gear can drive the outer gear to rotate, namely the driving shaft can drive the outer gear to rotate through the inner gear. The internal gear and the second gear form a pressure cavity, the pressure cavity comprises a high pressure cavity and a low pressure cavity, and the pressure born by the high pressure cavity is larger than the pressure born by the low pressure cavity. Wherein, the low pressure chamber is communicated with the liquid inlet channel, and the high pressure chamber is communicated with the liquid outlet channel. Specifically, the internal gear drives the external gear to rotate in the same direction through the meshing of the conjugate curve tooth profile of the external gear and each tooth of the internal gear contacts each other. The internal gear divides the internal cavity of the external gear into a plurality of working cavities, the volumes of the working cavities are changed along with rotation due to the offset of the centers of the internal gear and the external gear, the area with the increased volume forms a certain vacuum, the pressure of the area with the reduced volume is increased corresponding to the liquid inlet channel, and the pressure of the area with the reduced volume is increased corresponding to the oil outlet channel.

Specifically, the pump rotor includes an impeller, and the working medium is water. Specifically, the impeller is arranged on the driving shaft, and rotates under the action of the driving shaft, so that water in the pump cavity is pressurized, and the pressurized water can flow out through the liquid outlet channel. The impeller can be of centrifugal type, rotor type or vortex type and the like.

The pump rotor is driven by the driving shaft to rotate, so that work is applied to a fluid working medium, a pressurizing process is further realized, and the pump rotor can be a cycloid rotor.

In one possible design, the pump assembly further includes a first mounting hole provided in the housing, a second mounting hole provided in the case, and a fastener passing through the first mounting hole and the second mounting hole to lock the housing and the case.

In this design, pump assembly still includes first pilot hole, second pilot hole and fastener, is equipped with first pilot hole on the casing, is equipped with the second pilot hole on the box, and first pilot hole and second pilot hole correspond the setting, and the fastener passes first pilot hole and second pilot hole to realize the locking connection of box and casing.

It is worth to say that the cooperation of limit flange and spacing groove that the aforesaid scheme mentioned can realize preliminary pre-positioning function, and fastener, first pilot hole, second pilot hole belong to locking structure, can make box and casing reliable connection.

Specifically, the number of the first assembly holes, the second assembly holes and the fasteners is a plurality of one-to-one correspondence. Wherein, a plurality of first pilot holes even interval are arranged on the casing to can realize the omnidirectional location installation, structural stability is better.

According to a second aspect of the present application there is provided a vehicle comprising a pump assembly provided by any of the designs described above.

The vehicle provided by the application comprises the pump assembly provided by any one of the designs, so that the vehicle has all the beneficial effects of the pump assembly, and the description is omitted herein.

It should be noted that the vehicle may be a new energy automobile. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like. Of course, the vehicle may be a conventional fuel vehicle.

In one possible design, further, the housing of the pump assembly includes a gearbox, and the vehicle further includes a transmission assembly positioned within the receiving cavity of the gearbox; and/or the tank of the pump assembly comprises a water tank.

In this design, the box of pump assembly can be the gearbox, and the holding intracavity of gearbox is equipped with the variable speed subassembly, and the casing of pump assembly is connected with the gearbox, and low pressure grease gets into the pump chamber through the feed liquor passageway, under gear rotor's effect, is compressed into high pressure grease after flowing into the holding intracavity from the drain passageway to supply the variable speed subassembly to use.

The casing of the pump assembly is connected with the water tank, low-pressure water enters the pump cavity through the liquid inlet channel, and the low-pressure water flows into the water tank from the liquid outlet channel after being compressed into high-pressure water under the action of the rotating impeller.

In one possible design, the vehicle further includes a housing coupled to the gearbox and a main drive motor positioned within the housing, the shaft of the main drive motor being coupled to the transmission assembly.

In this design, the vehicle includes casing and main driving motor, and main driving motor holds in the casing, and the casing links to each other with the gearbox, and main driving motor's pivot links to each other with the variable speed subassembly. Wherein, the casing, gearbox and the casing of main drive motor link to each other, constitute trinity structure for the internal structure of vehicle arranges compacter, and the overall arrangement is rationalized more. Additional aspects and advantages of the present application will become apparent in the following description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a schematic structural view of a pump assembly according to a first embodiment of the present application;

FIG. 2 shows a schematic structural view of a pump assembly according to a second embodiment of the present application;

FIG. 3 shows a schematic structural view of a pump assembly according to a third embodiment of the present application;

FIG. 4 shows a schematic structural view of a pump assembly according to a fourth embodiment of the present application;

FIG. 5 shows a schematic structural view of a pump assembly according to a fifth embodiment of the present application;

FIG. 6 shows a schematic structural view of a pump assembly according to a sixth embodiment of the present application;

fig. 7 shows an exploded schematic view of a pump assembly in accordance with one embodiment of the present application.

The correspondence between the reference numerals and the component names in fig. 1 to 7 is:

a 100 pump assembly is provided with a pump,

110, 111 second assembly holes,

120, 121, 122,

130 a housing, 131 a stop flange, 132 a seal groove, 133 a first mounting hole,

140 the pump chamber(s),

150 the pump rotor is provided with a pump,

160 seals, 161 first seals, 162 second seals,

170.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.

Pump assembly 100 and a vehicle provided according to some embodiments of the present application are described below with reference to fig. 1-7.

An embodiment according to a first aspect of the present application provides a pump assembly 100, as shown in fig. 1 to 7, the pump assembly 100 includes a housing 110, a liquid passing channel 120, a casing 130, and a pump rotor 150, the housing 110 includes a receiving chamber, the liquid passing channel 120 is provided on the housing 110, the liquid passing channel 120 communicates with the receiving chamber, the casing 130 is connected to the housing 110, a pump chamber 140 is provided between the casing 130 and the housing 110, the pump chamber 140 communicates with the liquid passing channel 120, the pump rotor 150 is located in the pump chamber 140, and the pump rotor 150 is movable relative to the casing 130 to circulate a working medium in the receiving chamber, the liquid passing channel 120, and the pump chamber 140.

The pump assembly 100 provided by the application comprises a box 110, a liquid passing channel 120, a casing 130 and a pump rotor 150, wherein the box 110 comprises a containing cavity, the liquid passing channel 120 is arranged on the box 110, and the liquid passing channel 120 is mutually communicated with the containing cavity. The casing 130 is connected to the housing 110, a pump chamber 140 is provided between the casing 130 and the housing 110, the pump chamber 140 is in communication with the liquid passing channel 120, the pump rotor 150 is located in the pump chamber 140, and the pump rotor 150 can move relative to the casing 130, so that the working medium in the pump chamber 140 is pressurized and then circulates in the pump chamber 140, the liquid passing channel 120 and the accommodating chamber.

It should be noted that, the case 110 may be a gearbox, the accommodating cavity of the gearbox is accommodated with a speed changing component, the working medium is grease, or the case 110 is a water tank, the accommodating cavity of the water tank is accommodated with water, and the working medium is water. The basic function of the case 110 is to accommodate the speed changing assembly or the working medium.

The pump assembly 100 in this application adopts casing 130 and box 110 to connect in order to constitute the pump chamber 140 that is used for holding pump rotor 150, and box 110 not only has the basic effect of self, can also form the effect of pump chamber 140 with casing 130, and box 110 has dual function promptly, and the integrated level is high, low cost, reduces the quantity of spare part to in order to simplify the overall structure of pump assembly 100. Compared with the scheme that the casing and the pump cover form the pressurizing cavity in the related art, the pump cover structure is omitted in the method, the number of parts is reduced, the weight of the whole machine is reduced, the production cost is reduced, the assembly requirement of the pump cover and the casing does not exist, the assembly efficiency can be effectively improved, and the production beat is accelerated.

Meanwhile, in the related art, after the casing and the pump cover of the pump are assembled, the casing, the pump cover and the component to be assembled occupy a part of axial height for the whole product. However, in the pump assembly 100 of the present application, the casing 130 is directly connected to the casing 110 to form the pump cavity 140, and after the pump cover in the related art is removed, the normal operation of the pump rotor 150 can be also realized, and the overall axial height of the product can be effectively reduced, so that the pump assembly is suitable for the development trend of light weight, thinning and miniaturization.

Further, as shown in fig. 1, 2 and 3, a portion of the case 110 is recessed in a direction away from the casing 130 to form a pump chamber 140.

In this embodiment, a part of the case 110 is recessed to form the pump chamber 140 along a direction away from the housing 130, that is, the case 110 is deformed alone to form the pump chamber 140, and the structure of the housing 130 is not required to be changed too much, and only needs to be mounted on the case 110, so that the original pump product can be applied to a new product only by stopping processing the pump cover, and the universal range is wider.

It can be thought that, due to the high manufacturing cost of the pump product, the casing 110 is structurally improved to achieve the purpose of enclosing the casing 130 to form the pump cavity 140, and the structure of the casing 130 is not changed or changed as little as possible, so that the casing 130 on the original production line can be continuously used.

Further, as shown in fig. 4 and 5, a portion of the casing 130 is recessed in a direction away from the case 110 to form a pump chamber 140.

In this embodiment, a portion of the casing 130 is recessed to form the pump chamber 140 along a direction away from the casing 110, that is, the casing 130 is deformed alone to form the pump chamber 140, and the structure of the casing 110 does not need to be changed too much, only the casing 130 is required to be fixedly installed with the casing 130, so that the structural requirement on the casing 110 is low, and the application range of the casing 110 is improved.

As shown in fig. 6, further, the pump chamber 140 includes a first chamber and a second chamber that are communicated, a portion of the casing 110 is recessed toward a direction away from the casing 130 to form the first chamber, and a portion of the casing 130 is recessed toward a direction away from the casing 110 to form the second chamber.

In this embodiment, the pump chamber 140 includes a first chamber and a second chamber, where the first chamber and the second chamber are mutually communicated, the first chamber is disposed on the case 110, and the second chamber is disposed on the housing 130, that is, the case 110 and the housing 130 each form a part of the pump chamber 140, so that the case 110 and the housing 130 make an adaptive change for forming the pump chamber 140, and a problem that a manufacturing difficulty is greater is caused by that one of the case 110 and the housing 130 forms the pump chamber 140 alone, which may put a high requirement on a processing technology. Meanwhile, during the movement of the pump rotor 150, a part of the case 110 and a part of the housing 130 may contact the pump rotor 150 to provide a limit function to the pump rotor 150, and the case 110 and the housing 130 cooperate to further ensure smooth movement of the pump rotor 150.

Further, as shown in fig. 6, one of the case 110 and the housing 130 has a limiting groove, and a portion of the other of the case 110 and the housing 130 protrudes into the limiting groove.

In this embodiment, in order to secure the reliable coupling performance of both the casing 110 and the housing 130 in consideration of the rotation of the pump rotor 150 within the pump chamber 140 formed by the casing 110 and the housing 130, a limit groove is provided in one of the casing 110 and the housing 130, a notch of the limit groove faces the other of the casing 110 and the housing 130, and a portion of the other of the casing 110 and the housing 130 may be protruded into the limit groove, thereby enabling the reliable coupling between the casing 110 and the housing 130, and the coupling performance between the casing 110 and the housing 130 is excellent without being relatively displaced with the movement of the pump rotor 150 when the pump rotor 150 rotates in the pump chamber 140.

Specifically, the limiting groove is formed on the case 110, and a part of the casing 130 extends into the limiting groove on the case 110, and the two mutually cooperate to realize position stability. Alternatively, the limit groove is formed on the housing 130, and a portion of the case 110 may extend into the limit groove on the housing 130, so as to determine a position between the case 110 and the housing 130.

Further, as shown in fig. 6, a limit groove is provided on the case 110, and a portion of the housing 130 extends toward the case 110 to form a limit flange 131, and the limit flange 131 is located in the limit groove.

In this embodiment, the limiting groove is disposed on the case 110, and the notch of the limiting groove is disposed toward the housing 130, so as to facilitate the assembly of the housing 130 and the case 110. Wherein, a part of the casing 130 extends towards the case 110 to form a limit flange 131, and the limit flange 131 is located in the limit groove, so that the case 110 and the casing 130 are positioned and installed.

It should be noted that, the setting of the limiting groove and the limiting flange 131 can realize the pre-positioning function between the case 110 and the casing 130, and also can realize the locking function, and adjust the specific structure of the limiting groove and the limiting flange 131 according to the actual requirement.

For example, if the pre-positioning function is implemented, after the limiting flange 131 extends into the limiting groove, the limiting flange 131 can be locked by other locking structures, and when the locking structure is not locked, the limiting flange 131 can also be separated from the limiting groove.

If the limit groove and the limit flange 131 can realize the locking function, once the limit flange 131 extends into the limit groove, the limit flange 131 cannot be separated from the limit groove, and the limit groove and the limit flange are engaged with each other to tightly combine the case 110 and the housing 130, so that the overall structural stability of the pump assembly 100 is ensured.

Further, the limiting groove may be an annular groove, and the limiting flange 131 is an annular boss. Alternatively, the limiting groove may be a plurality of groove bodies arranged at intervals, and correspondingly, the limiting flange 131 is a plurality of bosses, and each boss is correspondingly installed in one groove body. Wherein, a plurality of bosss can be the asymmetric form setting, and correspondingly, the spacing groove is also the asymmetric form and lays on box 110, can ensure box 110 and casing 130 accurate assembly, does not have the dress and inclines or misplaces the possibility.

Further, as shown in fig. 1 to 6, the case 110 has a mounting surface in contact with the cabinet 130. The pump assembly 100 further includes a seal 160, the seal 160 being disposed between the mounting surface of the housing 110 and the casing 130.

In this embodiment, since the pumping chamber 140 is located between the casing 110 and the housing 130, the working medium is pressurized in the pumping chamber 140 by the pump rotor 150, and the working medium may leak along the gap between the casing 110 and the housing 130, so that the sealing member 160 is disposed between the casing 110 and the housing 130, and the sealing member 160 can prevent the working medium in the pumping chamber 140 from leaking and losing, thereby avoiding affecting pumping efficiency.

The seal 160 may be a gasket, a glue seal, or the like.

Further, as shown in fig. 2, a portion of one of the cabinet 130 and the case 110 is recessed toward a direction away from the other of the cabinet 130 and the case 110 to form a seal groove 132, and the seal 160 is located within the seal groove 132.

In this embodiment, the case 110 has a mounting surface that can be in contact with the housing 130, and a portion of the housing 130 is recessed in a direction away from the mounting surface to form the seal groove 132, or alternatively, a portion of the mounting surface of the case 110 is recessed in a direction away from the housing 130 to form the seal groove 132. A portion of the seal 160 is positioned within the seal groove 132 to provide for a precisely positioned installation of the seal 160 while also preventing the seal 160 from moving between the cabinet 130 and the housing 110 to potentially fail the seal.

The seal groove 132 is formed on a portion of the housing 130, which is because the housing 130 has a smaller size relative to the case 110, thereby facilitating the processing.

It should be noted that, a part of the seal 160 is located in the seal groove 132, and a part of the seal 160 is pressed between the case 110 and the housing 130, so that reliable sealing performance can be provided, the working medium in the pump chamber 140 is ensured not to leak, and pumping efficiency is ensured.

Further, as shown in fig. 1 and 4, the mounting surfaces include a first mounting surface and a second mounting surface having an included angle. The seal 160 includes a first seal portion 161 and a second seal portion 162, the first seal portion 161 being located between the first mounting surface and the cabinet 130, and the second seal portion 162 being located between the second mounting surface and the cabinet 130.

In this embodiment, the mounting surface of the case 110 includes a first mounting surface and a second mounting surface, and an included angle is formed between the first mounting surface and the second mounting surface, that is, the first mounting surface and the second mounting surface are disposed non-coplanar. A first sealing portion 161 is provided between the first mounting surface and the casing 130, a second sealing portion 162 is provided between the second mounting surface and the casing 130, and the first sealing portion 161 and the second sealing portion 162 can form a double sealing barrier.

For example, when the working medium in the pump chamber 140 leaks along the first mounting surface, the working medium first encounters the obstruction of the first sealing portion 161, when the working medium fails to be obstructed by the first sealing portion 161, and the working medium continues to leak along the first mounting surface, because of the included angle between the first mounting surface and the second mounting surface, when the working medium extends from the first mounting surface to the second mounting surface, the working medium first overcomes the resistance caused by the included angle, and at the same time, the working medium is difficult to extend to the second mounting surface, and at the same time, the second sealing portion 162 is provided on the second mounting surface to block the working medium, so that under the double barrier of the first sealing portion 161 and the second sealing portion 162, the working medium is unlikely to leak from the gap between the casing 110 and the casing 130.

Further, as shown in fig. 1 to 6, the liquid passing passage 120 includes a liquid inlet passage 121 and a liquid outlet passage 122, the liquid inlet passage 121 is provided on the case 110, and the liquid inlet passage 121 communicates with the pump chamber 140 and the accommodating chamber, respectively. The liquid outlet channel 122 and the liquid inlet channel 121 are arranged on the box body 110 at intervals, and the liquid outlet channel 122 is respectively communicated with the pump cavity 140 and the accommodating cavity.

In this embodiment, the liquid passing channel 120 includes a liquid inlet channel 121 and a liquid outlet channel 122 spaced apart from each other on the case 110, the liquid inlet channel 121 and the liquid outlet channel 122 are respectively in communication with the pump chamber 140 and the receiving chamber, the working medium can enter the pump chamber 140 through the liquid inlet channel 121, be pressurized after passing through the pump rotor 150 in the pump chamber 140, and the pressurized working medium can return to the receiving chamber through the liquid outlet channel 122.

When the case 110 is a gearbox, the low-pressure grease enters the pump chamber 140 through the liquid inlet channel 121, and then the pressurizing process is completed under the action of the pump rotor 150 to form pressurized grease, and the pressurized grease is conveyed from the pump chamber 140 to the accommodating chamber through the liquid outlet channel 122, so as to lubricate the speed changing assembly in the accommodating chamber.

When the tank 110 is a water tank, the low-pressure water enters the pump chamber 140 through the liquid inlet channel 121, and then the high-pressure water is formed by the pressurization process under the action of the pump rotor 150, and the high-pressure water is delivered from the pump chamber 140 to the accommodating chamber through the liquid outlet channel 122.

Further, as shown in fig. 3, 4 and 5, the extending direction of the liquid inlet passage 121 and the extending direction of the liquid outlet passage 122 coincide.

In this embodiment, the extending direction of the liquid inlet channel 121 and the extending direction of the liquid outlet channel 122 are the same, that is, the liquid inlet channel 121 and the liquid outlet channel 122 are both opened on the case 110 along the axial direction, or the liquid inlet channel 121 and the liquid outlet channel 122 are both opened on the case 110 along the radial direction. Can be adaptively adjusted according to the arrangement requirements of the pump chamber 140 formed between the casing 130 and the housing 110.

Further, as shown in fig. 1, 2 and 6, an included angle is formed between the extending direction of the liquid inlet channel 121 and the extending direction of the liquid outlet channel 122.

In this embodiment, the extending direction of the liquid inlet channel 121 is different from the extending direction of the liquid outlet channel 122, and an included angle is formed therebetween, for example, one of the liquid inlet channel 121 and the liquid outlet channel 122 extends in the axial direction, and the other of the liquid inlet channel 121 and the liquid outlet channel 122 extends in the radial direction. Specifically, the liquid inlet passage 121 extends in the axial direction, and the liquid outlet passage 122 extends in the radial direction.

Further, the pump assembly 100 further comprises a filter arranged in the outlet channel 122 and/or the inlet channel 121.

In this embodiment, the pump assembly 100 further includes a filter disposed in the liquid outlet passage 122, and the filter is capable of filtering impurities in the pressurized working medium when the pressurized working medium flows from the pump chamber 140 to the receiving chamber, thereby preventing the impurities from entering the receiving chamber.

Further, the filter is further disposed in the liquid inlet channel 121, so as to prevent impurities in the low-pressure working medium in the accommodating cavity from flowing into the pump cavity 140 through the liquid inlet channel 121, and damage to the pump rotor 150 to directly affect the normal pressurizing process of the working medium.

Further, the filter is not only disposed in the liquid inlet channel 121, but also disposed in the liquid outlet channel 122, and the filter is disposed to enable the accommodating chamber and the pump chamber 140 to be two relatively independent chambers, only allows the working medium to smoothly flow in the two chambers, but all other impurities are not allowed to circulate between the accommodating chamber and the pump chamber 140, once one of the accommodating chamber and the pump chamber 140 generates impurities due to long-term operation, the impurities remain in the chamber, and cannot circulate to the other chamber through the liquid outlet channel 120, so that the service life of the pump assembly 100 can be prolonged.

Further, as shown in fig. 1 to 6, the pump assembly 100 further includes a driving part 170, the driving part 170 is disposed on the housing 130, the driving part 170 is located on a side of the pump rotor 150 facing away from the housing 110, and the driving part 170 is connected to the pump rotor 150, wherein the pump rotor 150 includes a cycloid rotor or an impeller or a gear or a scroll.

In this embodiment, the pump assembly 100 further includes a driving part 170, the driving part 170 is disposed in the housing 130, the driving part 170 is located at a side of the pump rotor 150 away from the case 110, the driving part 170 is connected to the pump rotor 150, and the driving part 170 is used to drive the pump rotor 150 to rotate relative to the housing 130, so as to pressurize the working medium in the pump chamber 140.

Specifically, the driving part 170 is a motor, and a driving shaft of the motor is connected to the pump rotor 150, and the driving shaft can drive the pump rotor 150 to rotate.

Specifically, the pump rotor 150 includes a cycloid rotor, and the working medium is grease. Specifically, the cycloid rotor comprises a cycloid inner rotor (inner rotor) and a cycloid outer rotor (outer rotor), the inner rotor is matched with the driving shaft, the outer rotor is arranged on the outer side of the inner rotor, the inner rotor and the outer rotor are meshed with each other, and the inner rotor can drive the outer rotor to rotate, namely the driving shaft can drive the outer rotor to rotate through the inner rotor. The inner rotor and the outer rotor form a pressure cavity, the pressure cavity comprises a high pressure cavity and a low pressure cavity, and the pressure born by the high pressure cavity is larger than the pressure born by the low pressure cavity. Wherein, the low pressure cavity is communicated with the liquid inlet channel 121, and the high pressure cavity is communicated with the liquid outlet channel 122.

Specifically, the pump rotor 150 includes an impeller, and the working medium is water. Specifically, the impeller is provided on the driving shaft, and rotates under the action of the driving shaft, thereby pressurizing the water in the pump chamber 140, so that the pressurized water may flow out through the liquid outlet passage 122. The impeller can be of centrifugal type, rotor type or vortex type and the like.

The pump rotor 150 is driven to rotate by the driving shaft, so that work is performed on the fluid working medium, and a pressurizing process is further realized.

Further, as shown in fig. 7, the pump assembly 100 further includes a first assembly hole 133 provided on the casing 130, a second assembly hole 111 provided on the housing 110, and a fastener passing through the first assembly hole 133 and the second assembly hole 111 to lock the casing 130 and the housing 110.

In this embodiment, the pump assembly 100 further includes a first assembly hole 133, a second assembly hole 111, and a fastener, the first assembly hole 133 is provided on the casing 130, the second assembly hole 111 is provided on the housing 110, the first assembly hole 133 and the second assembly hole 111 are correspondingly provided, and the fastener passes through the first assembly hole 133 and the second assembly hole 111, thereby achieving a locking connection of the housing 110 and the casing 130.

It should be noted that, the cooperation between the limiting flange 131 and the limiting groove mentioned in the foregoing solution can implement a preliminary pre-positioning function, and the fastening member, the first assembly hole 133, and the second assembly hole 111 belong to a locking structure, so that the case 110 and the housing 130 can be reliably connected.

Specifically, the number of the first fitting holes 133, the second fitting holes 111, and the fasteners is a one-to-one correspondence plurality. Wherein, a plurality of first pilot holes 133 even interval arranges on casing 130 to can realize the omnidirectional location installation, structural stability is better.

Embodiments according to the second aspect of the present application provide a vehicle comprising a pump assembly 100 provided by any of the designs described above.

The vehicle provided by the present application, including the pump assembly 100 provided by any of the designs described above, therefore has all the beneficial effects of the pump assembly 100, and will not be described in detail herein.

Further, the housing 110 of the pump assembly 100 comprises a gearbox, and the vehicle further comprises a gear shifting assembly located within the receiving cavity of the gearbox; and/or the housing 110 of the pump assembly 100 includes a water tank.

In this embodiment, the housing 110 of the pump assembly 100 may be a gearbox, a transmission assembly is disposed in a housing cavity of the gearbox, the housing 130 of the pump assembly 100 is connected with the gearbox, low-pressure grease enters the pump cavity 140 through the liquid inlet channel 121, and under the action of the gear rotor, the low-pressure grease is compressed into high-pressure grease and flows into the housing cavity from the liquid outlet channel 122 for use by the transmission assembly.

The tank body 110 of the pump assembly 100 may also be a water tank, the accommodating cavity of the water tank accommodates water, the casing 130 of the pump assembly 100 is connected with the water tank, low-pressure water enters the pump cavity 140 through the liquid inlet channel 121, and under the action of the rotating impeller, the low-pressure water is compressed into high-pressure water and flows into the water tank from the liquid outlet channel 122.

Further, the vehicle comprises a shell and a main driving motor, wherein the shell is connected with the gearbox, the main driving motor is positioned in the shell, and a rotating shaft of the main driving motor is connected with the speed changing assembly.

In this embodiment, the vehicle includes a housing and a main drive motor housed in the housing, the housing being connected to the transmission, and a rotating shaft of the main drive motor being connected to the transmission assembly. Wherein, the casing of main driving motor, gearbox and casing 130 link to each other, constitute trinity structure for the internal structure of vehicle arranges compacter, and the overall arrangement is more rationalized.

It should be noted that, as shown in fig. 1 to 7, the pump assembly 100 includes a housing 110, a liquid passing channel 120, a casing 130, and a pump rotor 150, the housing 110 includes a receiving cavity, the liquid passing channel 120 is disposed on the housing 110, and the liquid passing channel 120 is in communication with the receiving cavity. The casing 130 is connected to the housing 110, a pump chamber 140 is provided between the casing 130 and the housing 110, the pump chamber 140 is in communication with the liquid passing channel 120, the pump rotor 150 is located in the pump chamber 140, and the pump rotor 150 can move relative to the casing 130, so that the working medium in the pump chamber 140 is pressurized and then circulates in the pump chamber 140, the liquid passing channel 120 and the accommodating chamber.

Further, as shown in fig. 1, 2 and 3, along the direction away from the casing 130, a part of the casing 110 is recessed to form the pump cavity 140, that is, the casing 110 is deformed alone to form the pump cavity 140, and the casing 130 is only required to be mounted on the casing 110 without too much change, so that the original pump product can be applied to a new product only by stopping processing the pump cover, and the universal range is wider.

Further, as shown in fig. 4 and 5, along the direction away from the case 110, a part of the casing 130 is recessed to form the pump chamber 140, that is, the casing 130 is deformed alone to form the pump chamber 140, and the structure of the case 110 does not need to be changed too much, only the casing 130 is required to be fixedly installed with the casing 130, so that the structural requirement on the case 110 is low, and the application range of the case 110 is improved.

As shown in fig. 6, further, the pump chamber 140 includes a first chamber and a second chamber, where the first chamber and the second chamber are mutually communicated, the first chamber is disposed on the case 110, and the second chamber is disposed on the housing 130, that is, the case 110 and the housing 130 form a part of the pump chamber 140, so that the case 110 and the housing 130 make an adaptive change for forming the pump chamber 140, and a problem that a manufacturing difficulty is large is caused by that one of the case 110 and the housing 130 forms the pump chamber 140 alone, which may put a high requirement on a processing technology. Meanwhile, during the movement of the pump rotor 150, a part of the case 110 and a part of the housing 130 may contact the pump rotor 150 to provide a limit function to the pump rotor 150, and the case 110 and the housing 130 cooperate to further ensure smooth movement of the pump rotor 150.

Further, as shown in fig. 6, in consideration of the rotation of the pump rotor 150 in the pump chamber 140 formed by the case 110 and the housing 130, in order to secure the reliable connection performance of both the case 110 and the housing 130, a limit groove is provided on one of the case 110 and the housing 130, a notch of the limit groove faces the other of the case 110 and the housing 130, and a portion of the other of the case 110 and the housing 130 may be protruded into the limit groove, thereby enabling the reliable connection between the case 110 and the housing 130, and the connection performance between the case 110 and the housing 130 is excellent without being relatively displaced with the movement of the pump rotor 150 when the pump rotor 150 rotates in the pump chamber 140.

Further, as shown in fig. 6, a limit groove is provided on the case 110, and a notch of the limit groove is provided toward the housing 130, thereby facilitating assembly of the housing 130 and the case 110. Wherein, a part of the casing 130 extends towards the case 110 to form a limit flange 131, and the limit flange 131 is located in the limit groove, so that the case 110 and the casing 130 are positioned and installed.

Further, as shown in fig. 1 to 6, since the pumping chamber 140 is located between the casing 110 and the housing 130, the working medium is pressurized in the pumping chamber 140 by the pump rotor 150, and the working medium is likely to leak along the gap between the casing 110 and the housing 130, the sealing member 160 is provided between the casing 110 and the housing 130, and the sealing member 160 can prevent the working medium in the pumping chamber 140 from leaking and losing, thereby avoiding affecting pumping efficiency.

The seal 160 may be a gasket, a glue seal, or the like.

Further, as shown in fig. 2, the case 110 has a mounting surface, the mounting surface can contact with the casing 130, a portion of the casing 130 is recessed in a direction away from the mounting surface, so as to form the seal groove 132, and a portion of the seal 160 is located in the seal groove 132, so that the seal 160 is accurately positioned and mounted, and meanwhile, the possibility of seal failure caused by movement of the seal 160 between the casing 130 and the case 110 can be prevented.

Further, as shown in fig. 1 and 4, when the first sealing portion 161 is disposed closer to the pump chamber 140 than the second sealing portion 162, when the working medium in the pump chamber 140 leaks along the first mounting surface, the working medium first encounters the obstruction of the first sealing portion 161, when the first sealing portion 161 fails to obstruct the working medium, the working medium continues to leak along the first mounting surface, and when the working medium extends from the first mounting surface to the second mounting surface due to the included angle between the first mounting surface and the second mounting surface, the working medium first overcomes the resistance caused by the included angle, and at the same time, the second sealing portion 162 is disposed on the second mounting surface to block the working medium, so that under the double barrier of the first sealing portion 161 and the second sealing portion 162, the working medium cannot leak from the gap between the casing 110 and the casing 130.

Further, as shown in fig. 1 to 6, the liquid passing passage 120 includes a liquid inlet passage 121 and a liquid outlet passage 122 provided at intervals on the case 110, the liquid inlet passage 121 and the liquid outlet passage 122 being respectively communicated with the pump chamber 140 and the accommodating chamber, the working medium can enter the pump chamber 140 through the liquid inlet passage 121, be pressurized after passing through the action of the pump rotor 150 in the pump chamber 140, and the pressurized working medium can return to the accommodating chamber through the liquid outlet passage 122.

Further, as shown in fig. 3, 4 and 5, the extending direction of the liquid inlet channel 121 and the extending direction of the liquid outlet channel 122 are the same, i.e. the liquid inlet channel 121 and the liquid outlet channel 122 are both axially extended and opened on the case 110, or the liquid inlet channel 121 and the liquid outlet channel 122 are both radially extended and opened on the case 110. Can be adaptively adjusted according to the arrangement requirements of the pump chamber 140 formed between the casing 130 and the housing 110.

Further, as shown in fig. 1, 2 and 6, the extending direction of the liquid inlet channel 121 is different from the extending direction of the liquid outlet channel 122, and an included angle is formed between the extending direction of the liquid inlet channel 121 and the extending direction of the liquid outlet channel 122, for example, one of the liquid inlet channel 121 and the liquid outlet channel 122 extends along the axial direction, and the other of the liquid inlet channel 121 and the liquid outlet channel 122 extends along the radial direction. Specifically, the liquid inlet passage 121 extends in the axial direction, and the liquid outlet passage 122 extends in the radial direction.

Further, as shown in fig. 1 to 6, the pump assembly 100 further includes a driving part 170, the driving part 170 is disposed in the housing 130, the driving part 170 is located at a side of the pump rotor 150 away from the housing 110, the driving part 170 is connected to the pump rotor 150, and the driving part 170 is used for driving the pump rotor 150 to rotate relative to the housing 130, so as to pressurize the working medium in the pump chamber 140.

Specifically, the pump rotor 150 includes a cycloid rotor, and the working medium is grease. Specifically, the gear rotor comprises a cycloid inner rotor (for short, an inner rotor) and a cycloid outer rotor (for short, an outer rotor), the inner rotor is matched with the driving shaft, the outer rotor is arranged on the outer side of the inner rotor, the inner rotor and the outer rotor are meshed with each other, and the inner rotor can drive the outer rotor to rotate, namely, the driving shaft can drive the outer rotor to rotate through the inner rotor. The inner rotor and the outer rotor form a pressure cavity, the pressure cavity comprises a high pressure cavity and a low pressure cavity, and the pressure born by the high pressure cavity is larger than the pressure born by the low pressure cavity. Wherein, the low pressure cavity is communicated with the liquid inlet channel 121, and the high pressure cavity is communicated with the liquid outlet channel 122.

Specifically, the pump rotor 150 includes an impeller, and the working medium is water. Specifically, the impeller is provided on the driving shaft, and rotates under the action of the driving shaft, thereby pressurizing the water in the pump chamber 140, so that the pressurized water may flow out through the liquid outlet passage 122.

The pump rotor 150 is driven to rotate by the driving shaft, so as to apply work to the fluid working medium, and further realize the pressurizing process, and specifically, the pump rotor 150 may be gear type, centrifugal type, vane type, vortex type, etc.

Further, as shown in fig. 7, the pump assembly 100 further includes a first assembly hole 133, a second assembly hole 111, and a fastener, the housing 130 is provided with the first assembly hole 133, the housing 110 is provided with the second assembly hole 111, the first assembly hole 133 and the second assembly hole 111 are correspondingly arranged, and the fastener passes through the first assembly hole 133 and the second assembly hole 111, so as to realize locking connection of the housing 110 and the housing 130.

In the present application, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pump assembly, comprising:

the box body comprises a containing cavity;

the liquid passing channel is arranged on the box body and is communicated with the accommodating cavity;

the casing is connected to the box body, a pump cavity is arranged between the casing and the box body, and the pump cavity is communicated with the liquid passing channel;

and the pump rotor is positioned in the pump cavity and can move relative to the shell so as to enable working medium to circulate in the accommodating cavity, the liquid passing channel and the pump cavity.

2. The pump assembly of claim 1, wherein the pump assembly comprises a pump assembly,

a portion of the housing is recessed in a direction away from the housing to form the pump chamber.

3. The pump assembly of claim 1, wherein the pump assembly comprises a pump assembly,

4. The pump assembly of claim 1, wherein the pump assembly comprises a pump assembly,

the pump cavity comprises a first cavity and a second cavity which are communicated, a part of the box body is sunken towards the direction deviating from the shell to form the first cavity, and a part of the shell is sunken towards the direction deviating from the box to form the second cavity.

5. The pump assembly of any one of claims 1 to 4, wherein,

one of the box body and the machine shell is provided with a limit groove, and a part of the other one of the box body and the machine shell stretches into the limit groove.

6. The pump assembly of claim 5, wherein the pump assembly comprises a pump assembly,

the limiting groove is formed in the box body, a part of the machine shell extends towards the box body to form a limiting flange, and the limiting flange is located in the limiting groove.

7. The pump assembly of any one of claims 1 to 4, wherein,

the box body is provided with a mounting surface which is contacted with the shell;

the pump assembly further comprises:

and the sealing piece is arranged between the mounting surface of the box body and the shell.

8. The pump assembly of claim 7, wherein the pump assembly comprises a pump assembly,

a portion of one of the housing and the case is recessed toward a direction away from the other of the housing and the case to form a seal groove, the seal being located within the seal groove.

9. The pump assembly of claim 7, wherein the pump assembly comprises a pump assembly,

the mounting surface comprises a first mounting surface and a second mounting surface with an included angle;

the seal includes a first seal portion between the first mounting surface and the housing and a second seal portion between the second mounting surface and the housing.

10. The pump assembly of any one of claims 1 to 4, wherein the overage passage comprises:

the liquid inlet channel is arranged on the box body and is respectively communicated with the pump cavity and the accommodating cavity;

and the liquid outlet channel is arranged on the box body at intervals with the liquid inlet channel, and is respectively communicated with the pump cavity and the accommodating cavity.

11. The pump assembly of claim 10, wherein the pump assembly comprises a pump assembly,

the extending direction of the liquid inlet channel is consistent with the extending direction of the liquid outlet channel.

12. The pump assembly of claim 10, wherein the pump assembly comprises a pump assembly,

an included angle is formed between the extending direction of the liquid inlet channel and the extending direction of the liquid outlet channel.

13. The pump assembly of claim 10, further comprising:

The filter is arranged in the liquid outlet channel and/or the liquid inlet channel.

14. The pump assembly of any one of claims 1 to 4, further comprising:

the driving part is arranged on the shell and is positioned at one side of the pump rotor, which is away from the box body, and the driving part is connected with the pump rotor.

15. The pump assembly of any one of claims 1 to 4, further comprising:

the first assembly hole is arranged on the shell;

the second assembly hole is arranged on the box body;

and the fastening piece passes through the first assembly hole and the second assembly hole to lock the shell and the box body.

16. A vehicle, characterized by comprising: the pump assembly of any one of claims 1 to 15.

17. The vehicle of claim 16, wherein the vehicle is further characterized by,

the box body of the pump assembly comprises a gearbox, the vehicle further comprises a speed changing assembly, and the speed changing assembly is positioned in a containing cavity of the gearbox; and/or

The tank of the pump assembly includes a water tank.

18. The vehicle of claim 17, characterized in that the vehicle comprises:

The shell is connected with the gearbox;

the main driving motor is positioned in the shell, and a rotating shaft of the main driving motor is connected with the speed changing assembly.