CN118224086A - Pump body device, compressor and vehicle - Google Patents

Abstract

Pump body device, compressor and vehicle, pump body device includes: the rotor seat is provided with a rotor cavity, the rotor is arranged in the rotor cavity, the connecting shaft is connected with the rotor to limit the position of the rotor, the first end cover is connected with the connecting shaft to limit the position of the connecting shaft, and the first end cover is fixedly connected with the rotor seat. According to the technical scheme, the first end cover is positioned through the rotor seat, the connecting shaft is positioned through the first end cover, and the rotor is connected through the connecting shaft, so that the rotor is positioned in the rotor cavity. In the rotor rotation process, the driving component only provides driving force for the rotation of the rotor, so that the possibility that the rigid structure of the rotor rubs with other structures of the pump body device in the rotation process of the rotor is reduced, and the probability of abnormal sound of the pump body device is reduced.

Description

Pump body device, compressor and vehicle

Technical Field

The invention relates to the technical field of air pumps, in particular to a pump body device, a compressor and a vehicle.

Background

The traditional pump body device generally comprises an upper end cover, a rotor seat, a lower end cover, a rotor and a driving motor, wherein the upper end cover and the lower end cover are provided with an air inlet hole and an air outlet hole, the rotor seat is provided with a rotor cavity, the rotor is arranged in the rotor cavity and can rotate under the driving of the driving motor, the space in the rotor cavity is continuously compressed, and finally the compression and pumping functions of the pump body device on fluid working media are realized.

In the related art, a rotor is usually connected with a motor shaft of a driving motor and is positioned in a rotor cavity through the motor shaft of the driving motor, and because assembly errors exist between the driving motor and an upper end cover and a lower end cover, the motor shaft of the driving motor is difficult to be assembled into the rotor cavity in parallel to the axis of the rotor cavity, therefore, an included angle is often formed between the rotor which is positioned by means of the motor shaft and the axis of the rotor cavity, and the included angle can lead to friction between a rigid structure of the rotor and the inner wall of the rotor cavity and between the upper end cover and the lower end cover which cover the upper cavity opening and the lower cavity opening of the rotor cavity when the rotor rotates, so that abnormal sound of a pump body device is caused.

Disclosure of Invention

The invention aims to provide a pump body device, a compressor and a vehicle, and aims to solve the problem that when a rotor of the existing pump body device rotates, friction is easy to occur with a rotor cavity, an upper end cover and a lower end cover, and abnormal sound is caused by the pump body device.

To achieve the object of the present invention, in a first aspect, the present invention provides a pump body device, including:

a rotor mount having a rotor cavity;

the rotor is rotatably arranged in the rotor cavity;

a connecting shaft connected to the rotor to limit a position of the rotor;

The first end cover is connected with the connecting shaft to limit the position of the connecting shaft, and the first end cover is fixedly connected with the rotor seat.

In one possible implementation manner, the first end cover is provided with a mounting hole, one end of the connecting shaft extends into and is fixed in the mounting hole, and the other end of the connecting shaft is rotationally connected with the rotor.

In one possible implementation, the mounting hole includes a first hole section having a first guide surface that tapers in a direction from the rotor seat to the first end cap;

The connecting shaft comprises a first shaft section and a second shaft section which are connected, and the first shaft section is connected with the rotor;

the second shaft section is provided with a second guide surface matched with the first guide surface, the second shaft section stretches into the mounting hole, and the second guide surface of the second shaft section is in contact with the first guide surface of the first hole section.

In one possible implementation, the second shaft section includes a guide section and a fixing section that are connected, the second guide surface is provided on the guide section, and the fixing section is fixedly connected with the first end cover;

an extension line of the outer contour of the first guide surface is intersected on the interface of the guide section and the fixed section;

and an extension line of the outer contour of the second guide surface is intersected on the interface between the guide section and the fixed section.

In one possible implementation, the first guide surface and the second guide surface are conical surfaces, and the taper of the first guide surface and the taper of the second guide surface are set to be the same.

In one possible implementation, the fixed section is externally threaded;

The pump body device further comprises a fastener, and the fastener is sleeved on the thread so that the connecting shaft is connected with the first end cover.

In one possible implementation, the pump body device further includes an elastic member;

the elastic piece is arranged between the fastener and the interface between the guide section and the fixing section, and the edge of the elastic piece is abutted against the first end cover.

In one possible implementation, the mounting hole further includes a second hole section in communication with the first hole section;

the guide section at least partially extends into the second hole section and is in clearance fit with the second hole section.

In one possible implementation, the pump body device further includes a driving assembly for driving the rotor to rotate.

In one possible implementation, the pump body device further includes an end cap base;

the driving assembly is arranged on the end cover base, a threaded hole is formed in the end cover base, a first through hole is formed in the first end cover, a second through hole is formed in the rotor base, a third through hole is formed in the second end cover, and the first through hole, the second through hole, the third through hole and the threaded hole are communicated;

the pump body device further comprises a threaded piece, and the threaded piece sequentially penetrates through the first through hole, the second through hole and the third through hole and is connected with the threaded hole.

In one possible implementation manner, a driving groove is formed in one side, away from the first end cover, of the rotor, the connecting hole is communicated with the driving groove, and a plurality of transmission holes are formed in the driving groove at intervals along the circumferential direction;

The pump body device further comprises a driving ring, the driving ring comprises a ring body and a plurality of transmission pieces arranged at intervals along the circumferential direction of the ring body, the ring body is sleeved on a driving shaft of the driving assembly, the ring body is installed in the driving groove, and the transmission pieces penetrate through the transmission holes.

In one possible implementation, the ring body is in clearance fit with the drive slot, and the driving member is in clearance fit with the driving bore.

In a second aspect, the present invention also proposes a compressor comprising a pump body device comprising:

a rotor mount having a rotor cavity;

the rotor is arranged in the rotor cavity;

a connecting shaft connected to the rotor to limit a position of the rotor;

The first end cover is connected with the connecting shaft to limit the position of the connecting shaft, and the first end cover is fixedly connected with the rotor seat.

In a third aspect, the present invention also proposes a vehicle comprising a compressor comprising a pump body device comprising:

a rotor mount having a rotor cavity;

the rotor is arranged in the rotor cavity;

a connecting shaft connected to the rotor to limit a position of the rotor;

The first end cover is connected with the connecting shaft to limit the position of the connecting shaft, and the first end cover is fixedly connected with the rotor seat.

According to the technical scheme, the first end cover is positioned through the rotor seat, the connecting shaft is positioned through the first end cover, and the rotor is connected through the connecting shaft, so that the rotor is positioned in the rotor cavity. In the rotor rotation process, the rotor mainly relies on the connecting axle in the location of rotor intracavity, and drive assembly only provides driving force for rotor rotation, so, when drive assembly because of assembly or processing problem, when the drive shaft that leads to drive assembly to stretch into rotor intracavity appears the contained angle with the axis in rotor chamber, this contained angle can not lead to the fact the influence to the rotation of rotor, and then reduces the rotor in the rotation process, the rigid structure of rotor and the possibility that other structures of pump body device took place the friction, reduces the probability that pump body device took place the abnormal sound. Meanwhile, the connecting shaft is used for positioning the rotor, and the precision requirements of machining and assembling parts of the pump body device can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of one embodiment of a pump body apparatus provided by the present invention;

FIG. 2 is a schematic perspective view of a first end cap, a rotor seat, a rotor, and a second end cap;

FIG. 3 is a schematic view of the rotor body of FIG. 1;

FIG. 4 is a cross-sectional view of the first end cap of FIG. 1;

FIG. 5 is a schematic perspective view of the connecting shaft of FIG. 1;

FIG. 6 is a schematic view of the assembly of the fastener, elastic member and connecting shaft of FIG. 1;

FIG. 7 is a schematic view of the expansion or contraction outer profile of the connecting shaft of FIG. 1;

FIG. 8 is a schematic diagram illustrating the connection of the first end cap, the rotor base, the second end cap, the end cap base, and the driving motor of FIG. 1;

Fig. 9 is a schematic perspective view of the driving ring of fig. 1.

Reference numerals illustrate:

10000 pump body devices;

10 rotor seat, 101 rotor cavity, 1011 cavity, 102 second through hole, 103 second pin hole;

20 rotors, 201 rotor bodies, 2011 blade grooves, 2012 connecting holes, 2013 driving grooves, 2014 transmission holes and 202 blades;

30 connecting shafts, 301 first shaft sections, 302 second shaft sections, 3021 fixing sections, 3022 guiding sections and 303 second guiding surfaces;

40 first end cap, 401 mounting hole, 4011 first hole section, 4012 second hole section, 4013 first guide surface, 402 first through hole, 403 first pin hole; 404 air inlet holes; 405 vent holes;

50 drive assembly, 501 drive shaft;

60 second end cap, 601 third through hole, 602 dodging hole;

70 end cap base, 701 threaded hole;

80. A positioning pin;

90. a fastener;

100. An elastic member;

110. A base bolt;

120. A screw;

130. An air inlet bracket;

140. An exhaust support;

150 drive ring, 151 ring body, 152 drive.

Detailed Description

The following description of the embodiments of the present invention 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 invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

In the related art, the rotor is usually positioned in the rotor cavity through the driving motor, and because the assembly error exists between the driving motor and the upper end cover and the lower end cover, the motor shaft of the driving motor is difficult to be assembled into the rotor cavity in parallel to the axis of the rotor cavity, therefore, the rotor positioned by the motor shaft often has an included angle with the axis of the rotor cavity, and the included angle can cause friction between the rotor and the inner wall of the rotor cavity and between the upper end cover and the lower end cover, which are covered on the upper cavity opening and the lower cavity opening of the rotor cavity, when the rotor rotates, so that abnormal sound of the pump body device is caused.

In order to solve the above problems, the present application provides a vehicle, which includes a seat having a refrigeration system, the refrigeration system includes a compressor, a condenser, an evaporator, and a throttling device, the compressor includes a pump body 10000, and the pump body 10000 is used to drive a refrigerant to flow in the refrigeration system. It will be appreciated that the compressor having the pump body 10000 can be applied to other refrigeration systems of vehicles other than seats, and the present application is not limited thereto.

The pump body apparatus 10000 may be a vane pump, an axial flow pump, or a centrifugal pump, and the invention is not limited thereto, and referring to fig. 1, the pump body apparatus 10000 includes: the rotor seat 10 is provided with a rotor cavity 101, the rotor 20 is rotatably arranged in the rotor cavity 101, the connecting shaft 30 is connected with the rotor 20 to limit the position of the rotor 20, the first end cover 40 is connected with the connecting shaft 30 to limit the position of the connecting shaft 30, and the first end cover 40 is fixedly connected with the rotor seat 10.

According to the technical scheme of the invention, the first end cover 40 is positioned through the rotor seat 10, the connecting shaft 30 is positioned through the first end cover 40, the rotor 20 is connected through the connecting shaft 30, and the rotor 20 is positioned in the rotor cavity 101. In the process of rotor 20 rotation, the positioning of rotor 20 in rotor cavity 101 mainly relies on connecting axle 30, drive assembly 50 only provides driving force for rotor 20 rotation, therefore, when drive assembly 50 because of assembly or processing problem, when drive assembly 50 stretches into the axis of rotor cavity 101 and the drive shaft 501 of rotor cavity 101 and the contained angle appears, this contained angle can not lead to the fact the influence to rotor 20's rotation, and then reduce rotor 20 in the rotation process, the possibility that rotor 20's rigid structure and pump body device 10000's other structures take place the friction, reduce pump body device 10000's probability of taking place abnormal sound. Meanwhile, the rotor 20 is positioned by the connecting shaft 30, so that the precision requirements of machining and assembling parts of the pump body device 10000 can be reduced.

Referring to fig. 2, the rotor seat 10 is configured to form a rotor cavity 101 capable of accommodating the rotor 20, the rotor 20 is rotatably disposed in the rotor cavity 101, generally speaking, the rotor 20 includes a rotor body 201 and a vane 202, the rotor body 201 is connected with the driving component 50, one end of the vane 202 is connected with the rotor body 201, the other end of the vane 202 is attached to an inner wall of the rotor cavity 101, the vane 202 divides the rotor cavity 101 into a plurality of independent chambers 1011, the driving component 50 is in driving connection with the rotor body 201 to drive the rotor body 201 to rotate, the rotor body 201 rotates to drive the vane 202 disposed on the rotor body 201 to rotate, and the vane 202 rotates to compress a space of the chamber 1011, thereby generating negative pressure in the rotor cavity 101 and driving fluid to flow. In the related art, the rotor body 201 is generally positioned in the rotor cavity 101 directly by the driving assembly 50, and an included angle is often formed between the assembled rotor 20 and the rotor cavity 101 due to an assembly error of the driving assembly 50 and the rotor cavity 101. When the rotor 20 rotates, the rigid structure of the rotor 20, i.e. the rotor body 201, will rub against the rotor cavity 101, thereby causing abnormal noise of the pump body 10000.

Referring to fig. 2 and 3, in an embodiment of the invention, a plurality of vane slots 2011 are circumferentially and uniformly distributed on the edge of the rotor body 201, and the vanes 202 are slidably disposed in the vane slots 2011, when the rotor body 201 rotates, the vanes 202 disposed in the vane slots 2011 can slide out from the vane slots 2011 under the driving of the centrifugal force of the rotor body 201. In this way, when the contact section between the vane 202 and the rotor cavity 101 is worn due to long-time contact with the cavity wall of the rotor cavity 101, the new vane 202 can slide out from the vane slot 2011 under the drive of centrifugal force, so that the vane 202 is attached to the inner wall of the rotor cavity 101 again, so that each chamber 1011 is kept relatively sealed, the influence of the abrasion of the vane 202 on the capability of the rotor cavity 101 for generating negative pressure is reduced, and the service life of the pump body device 10000 is prolonged.

The first end cover 40 is connected to the rotor base 10, and the first end cover 40 may be made of aluminum or steel, which is not limited in this aspect of the application, in an embodiment of the application, the first end cover 40 is made of graphite, which has lighter weight, better lubricity, and more stable running of the rotor 20 mounted thereon, and is beneficial to improving the running stability of the pump body 10000.

Referring to fig. 1, at least two positioning pins 80 are disposed between the first end cover 40 and the rotor base 10, the positioning pins 80 are used for positioning the first end cover 40 on the rotor base 10, and various manners of positioning the positioning pins 80 between the first end cover 40 and the rotor base 10 are possible, for example, in an embodiment of the invention, a first positioning hole is disposed on the first end cover 40, a second positioning hole is disposed on the rotor base 10, two ends of the positioning pins 80 respectively penetrate through the first pin hole 403 and the second pin hole 103, and are in interference fit with the first pin hole 403 and the second pin hole 103, so as to define a radial position between the first end cover 40 and the rotor base 10, and further position the first end cover 40 on the rotor base 10.

It will be appreciated that in other embodiments of the present invention, other arrangements of the positioning pin 80 and the first end cover 40 and the rotor base 10 exist, for example, the positioning pin 80 and the first end cover 40 may be integrally formed, the rotor base 10 is provided with a positioning hole, and the positioning pin 80 of the first end cover 40 is inserted into the positioning hole, and the first end cover 40 may be positioned on the rotor base 10. The positioning pin 80 may be a rigid pin or an elastic pin, which is not limited in the present invention. In an embodiment of the present invention, the positioning pin 80 is an elastic pin, and when the first end cover 40 and the rotor seat 10 are impacted by a load, the elastic pin can be deformed elastically, so that the impact of the load impact on the first pin hole 403 and the second pin hole 103 is effectively reduced, the deformation speed of the first pin hole 403 and the second pin hole 103 is slowed down, the positioning failure time of the first end cover 40 and the rotor seat 10 is prolonged, and the service life of the pump body device 10000 is prolonged.

It should be understood that the first end cover 40 may be positioned on the rotor base 10 in other manners, for example, in other embodiments of the present invention, a positioning groove is formed on the rotor base 10, a positioning protrusion is formed on the first end cover 40, and the positioning protrusion of the first end cover 40 is clamped in the positioning groove of the rotor base 10, so that positioning of the first end cover 40 on the rotor base 10 can be achieved as well.

Referring to fig. 3 to 5, the first end cover 40 is provided with a mounting hole 401, the mounting hole 401 and the first end cover 40 are eccentrically disposed, the rotor body 201 of the rotor 20 is provided with a connecting hole 2012, one end of the connecting shaft 30 extends into and is fixed in the mounting hole 401, and the other end is connected with the connecting hole 2012 of the rotor body 201. Specifically, in one embodiment of the present invention, the mounting hole 401 includes a first hole section 4011 and a second hole section 4012 that are in communication, the connecting shaft 30 includes a first shaft section 301 and a second shaft section 302 that are connected, the first shaft section 301 extends into the connecting hole 2012 of the rotor body 201 to connect with the rotor body 201, and the second shaft section 302 extends into the mounting hole 401 and is positioned and connected within the mounting hole 401, such that the rotor body 201 is positioned on the first end cover 40.

It should be noted that, there may be various connection manners of the first end cover 40, the connecting shaft 30, and the rotor 20, for example, in some embodiments of the present application, the rotor 20 is fixedly connected to the connecting shaft 30, and the connecting shaft 30 is rotatably connected to the first end cover 40, so as to achieve rotational connection between the rotor 20 and the first end cover 40. In other embodiments of the present application, the connecting shaft 30 is fixedly connected to the first end cap 40, and the rotor 20 is rotatably connected to the connecting shaft 30, so that the rotor 20 can be rotatably connected to the first end cap 40, which is not limited in the present application.

For convenience in explaining the positioning of the connecting shaft 30 in the mounting hole 401, the second embodiment is taken as an example of the present application, and the positioning of the connecting shaft 30 in the mounting hole 401 is explained, referring to fig. 1, 4 and 5, in this embodiment, the connecting shaft 30 is fixedly connected in the mounting hole 401, and the rotor body 201 is rotatably connected to the connecting shaft 30. The first hole section 4011 of the mounting hole 401 has a first guiding surface 4013 that gradually tapers along the direction from the rotor seat 10 to the first end cover 40, and the second axial end of the connecting shaft 30 has a second guiding surface 303 that is adapted to the first guiding surface 4013 and the second guiding surface 303 are used for providing guiding for the connecting shaft 30 to be mounted in the mounting hole 401, so as to limit the radial movement of the connecting shaft 30 in the mounting hole 401, and improve the mounting accuracy of the connecting shaft 30 on the first end cover 40, and further improve the mounting accuracy of the rotor 20 in the rotor cavity 101. The rotor body 201 and the rotor cavity 101 are prevented from colliding when the rotor 20 rotates, and abnormal sound of the pump body device 10000 is avoided.

It will be appreciated that in other embodiments, when the connecting shaft 30 is rotatably connected in the mounting hole 401, the second guiding surface 303 of the connecting shaft 30 at this time also abuts against the first guiding surface 4013 of the mounting hole 401, so as to rotationally position the connecting shaft 30 on the first end cover 40.

The second shaft section 302 includes a guide section 3022 and a fixing section 3021 that are connected, the guide section 3022 is configured to provide a guide for the installation of the connecting shaft 30 in the mounting hole 401, the second guide surface 303 is disposed on the guide section 3022, and the guide section 3022 at least partially extends into the second hole section 4012, so as to facilitate connection of the fixing section 3021 to the mounting hole 401. In an embodiment of the present invention, the portion of the guide section 3022 extending into the second hole section 4012 is in clearance fit with the second hole section 4012, so as to leave a space for deformation of the guide section 3022 and the second hole section 4012, and avoid mutual extrusion caused by different deformation of the guide section 3022 and the second hole section 4012 due to different thermal expansion coefficients when temperature changes.

The fixing section 3021 is fixedly connected to the first end cap 40, and there are various manners in which the fixing section 3021 is connected to the first end cap 40, for example, in an embodiment of the present invention, the mounting hole 401 may be provided as a blind hole, an internal thread is provided in the mounting hole 401, and an external thread matching with the internal thread is provided on the fixing section 3021, so that the fixing section 3021 is fixed to the first end cap 40.

It will be appreciated that if the mounting hole 401 is a blind hole, the second guide surface 303 of the connecting shaft 30 will contact the first guide surface 4013 of the mounting hole 401 and will wear away from each other during the process of screwing the connecting shaft 30 into the mounting hole 401. Long, the positioning effect of the first guide surface 4013 and the second guide surface 303 is reduced. Thus, in another embodiment of the present application, the mounting hole 401 is configured as a through hole, the fixing section of the connecting shaft 30 extends out of the first end cover 40 through the mounting hole 401, the fixing section 3021 is externally provided with threads, the pump body apparatus 10000 further includes a fastener 90, and the fastener 90 is sleeved on the threads of the fixing section 3021, so that the connecting shaft 30 is connected to the first end cover 40. In this embodiment, since the fixing section of the connecting shaft 30 is connected to the first end cap 40 by the fastener 90, the connecting shaft 30 and the first end cap 40 do not slide relatively during the connection process, and the first guide surface 4013 and the second guide surface 303 are not worn due to sliding, so that the service life of the pump body device 10000 can be prolonged.

The fastener 90 may be a nut or a fixing pin, which is not limited in this regard by the present application.

The pump body device 10000 further includes an elastic member 100, where the elastic member 100 is disposed between the fastening member 90 and the first end cap 40, and the elastic member 100 is configured to provide an outward pretightening force for the fastening member 90, thereby improving a friction force between the threaded fastening member 90 and the threaded structure of the fixing section 3021, and preventing the threaded fastening member 90 from loosening from the fixing section 3021 during operation of the pump body device 10000. The elastic member 100 may be a conical spring, a disc spring, or a reed, and the present invention is not limited thereto.

Referring to fig. 6 in conjunction with fig. 1, in an embodiment of the present invention, the guide section 3022 protrudes from the first end cap 40 away from the rotor base 10 beyond the first end cap 40, the diameter of the guide section 3022 is larger than that of the fixing section 3021, an interface is formed between the guide section 3022 and the fixing section 3021, the elastic member 100 is abutted against the interface by the fastening member 90, and the outer edge of the elastic member 100 contacts the first end cap 40. So configured, on the one hand, when the threaded fastener 90 is screwed into the fixing segment 3021, the threaded fastener 90 contacts with the elastic member 100, and is limited by the elastic force of the elastic member 100, the threaded fastener 90 abutting against the elastic member 100 cannot move downward, but is abutted against the interface between the guide segment 3022 and the fixing segment 3021 together with the elastic member 100, and if the threaded fastener 90 moves downward under the action of torsion force, the elastic member 100 will deform elastically under the pressure of the threaded fastener 90 and prevent the threaded fastener 90 from moving downward, so as to avoid the threaded fastener 90 from bursting the first end cover 40 due to excessive screwing force. In the second aspect, in the connection structure, the connection shaft 30 is elastically connected to the first end cover 40, that is, the connection shaft 30 is fixed in the mounting hole 401 of the first end cover 40, and may slightly float along the axial direction of the mounting hole 401, so that when the external temperature changes, the position of the connection shaft 30 may float up and down according to the deformation condition opposite to the first end cover 40, thereby avoiding the occurrence of mutual extrusion due to different deformation caused by different thermal expansion coefficients of the first end cover 40 and the connection shaft 30 when the temperature changes.

In an embodiment of the present invention, the extension line of the outer contour of the first guide surface 4013 intersects the interface between the guide section 3022 and the fixed section 3021, the extension line of the outer contour of the second guide surface 303 intersects the interface between the guide section 3022 and the fixed section 3021, and specifically, referring to fig. 7, in which 30a is the original contour of the connecting shaft 30, 30b is the expanded contour of the connecting shaft 30, and 30c is the contracted contour of the connecting shaft 30, when the extension line of the outer contour of the second guide surface 303 meets the intersection between the guide section 3022 and the fixed section 3021, the contour generating line of the second guide surface 303 provided on the connecting shaft 30 always keeps moving in a straight line regardless of whether the connecting shaft 30 is expanded or contracted. Similarly, when the outer contour line of the first guide surface 4013 meets the requirement that the extension line intersects the interface between the guide section 3022 and the fixing section 3021, no matter whether the mounting hole 401 is expanded or contracted, the contour bus of the first guide surface 4013 provided in the mounting hole 401 always moves on a straight line, so that when the first end cover 40 and the connecting shaft 30 expand or contract under the condition of temperature change, only translation can be performed on the first guide surface 4013 and the second guide surface 303 which are mutually matched, and no additional extrusion or gap caused by different deformation amounts can be generated. Further, the position accuracy of the connecting shaft 30 and the first end cover 40 is guaranteed, and the yield and the performance consistency of the pump body device 10000 are improved.

It should be noted that, the fixing section 3021 of the present invention should be a length of the connecting shaft 30 for connecting with the first end cap 40, rather than a connecting structure provided on the connecting shaft 30 itself, specifically, referring to fig. 6, it may be assumed that the connecting structure of the connecting shaft 30 is a screw thread, the connecting structure length is L1, and if the connecting structure L1 of the connecting shaft 30 extends out of the first end cap 40 and participates in the connection of the first end cap 40, the range of the fixing section 3021 should be L1, the interface between the fixing section 3021 and the guiding section 3022 should be a-plane, and the extension lines of the outer contours of the first guiding surface 4013 and the second guiding surface 303 should intersect with the a-plane. If the connection structure of the connection shaft 30 extends only partially into the outside of the first end cover 40 and participates in the connection of the first end cover 40, the range of the fixing section 3021 should be L2, the interface between the fixing section 3021 and the guiding section 3022 should be b-plane, and the extension lines of the outer contours of the first guiding surface 4013 and the second guiding surface 303 should intersect with the b-plane, so that the contour bus bars of the first guiding surface 4013 and the second guiding surface 303 can always keep moving in a straight line.

The first guide surface 4013 and the second guide surface 303 may be wedge-shaped surfaces or conical surfaces, which is not limited in the present invention, and in an embodiment of the present invention, the first guide surface 4013 and the second guide surface 303 are conical surfaces, compared to wedge-shaped surfaces having a specific orientation, so that the connecting shaft 30 can be mounted in the mounting hole 401 in any direction, and the assembly efficiency of the pump body apparatus 10000 is improved.

The taper of the first guide surface 4013 and the taper of the second guide surface 303 are set to be the same, and compared with the taper of the cross section on the interface between the guide section 3022 and the fixing section 3021, the taper ensures that the first guide surface 4013 and the second guide surface 303 only translate, and no additional extrusion or gap caused by different deformation amounts is generated, so that the position accuracy of the connecting shaft 30 and the first end cover 40 is ensured.

Referring to fig. 4 and 8, the pump body apparatus 10000 further includes a second end cover 60, the second end cover 60 is disposed on a side of the rotor base 10 away from the first end cover 40, and the second end cover 60 is configured to cooperate with the first end cover 40, so that the rotor cavity 101 forms a closed space, and provides conditions for forming a negative pressure in the rotor cavity 101. At least one of the first end cover 40 and the second end cover 60 is provided with an air inlet hole 404 and an air outlet hole 405, and the air inlet hole 404 and the air outlet hole 405 are used for enabling the rotor cavity 101 to form a communication loop with the external atmosphere, so that the normal operation of the pump body device 10000 is ensured. In an embodiment of the present invention, the air inlet 404 is provided with the air inlet support 130, the air outlet 405 is provided with the air outlet support 140, and the air inlet support 130 and the air outlet support 140 can effectively prevent dust and impurities in the external atmosphere from entering the rotor cavity 101 through the air inlet 404 and the air outlet 405 during the process of entering and exiting the rotor cavity 101, so as to avoid damage to the rotor 20 in the rotor cavity 101 caused by the dust and impurities.

Referring to fig. 1,2, 8 and 9, the second end cover 60 is provided with a avoidance hole 602, the driving shaft 501 of the driving assembly 50 extends into the rotor cavity 101 through the avoidance hole 602, a side of the rotor 20 away from the first end cover 40 is provided with a driving slot 2013, the connection hole 2012 is communicated with the driving slot 2013, and the driving shaft 501 of the driving assembly 50 extends into the driving slot 2013 to be in driving connection with the rotor body 201. In an embodiment of the present invention, the axis of the driving groove 2013 is provided with a plurality of transmission holes 2014, the pump body device 10000 further includes a driving ring 150, the driving ring 150 includes a ring body 151 and a plurality of transmission members 152 circumferentially spaced along the ring body 151, the ring body 151 is sleeved on the driving shaft 501 of the driving assembly 50, the ring body 151 is installed in the driving groove 2013, the transmission members 152 pass through the transmission holes 2014, and the driving assembly 50 transmits power to the rotor 20 through the driving ring 150.

In an embodiment of the present invention, the ring body 151 is in clearance fit with the driving slot 2013, and the transmission member 152 is in clearance fit with the transmission hole 2014, so that a clearance gap is reserved between the ring body 151 and the driving slot 2013, between the transmission member 152 and the transmission hole 2014, so that the rotor 20 can adjust the position of the driving shaft 501 during rotation, and the running accuracy of the rotor 20 is improved. At the same time, the relief gap also allows room for expansion or contraction of the drive shaft 501, avoiding extrusion of the drive shaft 501 and the ring body 151 due to inconsistent coefficients of thermal expansion.

The pump body device 10000 further includes a driving component 50, where the driving component 50 is used to drive the rotor 20 to rotate, and the driving component 50 may be a motor or a rotary cylinder, which is not limited in this application.

The driving assembly 50 may be directly disposed on the second end cover 60, or may be indirectly disposed on the second end cover 60 through a transition piece, which is not limited in the present application, in one embodiment of the present application, the pump body apparatus 10000 further includes an end cover base 70, one end of the end cover base 70 is connected to the second end cover 60, and the other end is connected to a driving seat of the driving assembly 50 through a base bolt 110. The end cover base 70 is arranged, so that on one hand, the end cover base 70 can form a mounting surface matched with a driving seat of the driving assembly 50, and the mounting precision of the driving assembly is improved. In the second aspect, the pump body device 10000 can be adapted to different types of driving assemblies 50 by replacing different end cover bases 70, so that the universality of the pump body device 10000 is improved.

Referring to fig. 8, the first end cover 40, the rotor base 10, the second end cover 60 and the end cover base 70 are connected to each other, and there are various ways in which the first end cover 40, the rotor base 10, the second end cover 60 and the end cover base 70 are connected to each other, and the first end cover 40, the rotor base 10, the second end cover 60 and the end cover base 70 may be connected to each other in sequence by a snap-fit manner or may be connected to each other in sequence by a screw structure. In an embodiment of the present invention, the end cover base 70 is provided with a threaded hole 701, the first end cover 40 is provided with a first through hole 402, the rotor base 10 is provided with a second through hole 102, the second end cover 60 is provided with a third through hole 601, and the first through hole 402, the second through hole 102, the third through hole 601 and the threaded hole 701 are communicated; the pump body device 10000 further includes a screw 120, where the screw 120 sequentially passes through the first through hole 402, the second through hole 102, and the third through hole 601, and is connected to the threaded hole 701, so that the first end cover 40, the rotor base 10, and the second end cover 60 are locked on the end cover base 70. Compared with the first end cover 40, the rotor seat 10, the second end cover 60 and the end cover base 70 which are connected layer by layer through threads, the threaded piece 120 sequentially passes through the through holes formed in the first end cover 40, the rotor seat 10 and the second end cover 60, so that the first end cover 40, the rotor seat 10 and the second end cover 60 are screwed on the end cover base 70, the assembly difficulty of the first end cover 40, the rotor seat 10, the second end cover 60 and the end cover base 70 can be effectively reduced, and the assembly efficiency is improved.

In the description of the embodiments of the present invention, it should be noted that, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to the orientation or positional relationship described based on the drawings, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, but all or part of the procedures for implementing the above embodiments can be modified by one skilled in the art according to the scope of the appended claims.

Claims (14)

1. A pump body apparatus, comprising:

a rotor mount having a rotor cavity;

the rotor is rotatably arranged in the rotor cavity;

a connecting shaft connected to the rotor to limit a position of the rotor;

The first end cover is connected with the connecting shaft to limit the position of the connecting shaft, and the first end cover is fixedly connected with the rotor seat.

2. Pump body arrangement according to claim 1, wherein the first end cap is provided with a mounting hole, wherein one end of the connecting shaft extends into and is fixed in the mounting hole, and wherein the other end of the connecting shaft is in rotational connection with the rotor.

3. The pump body apparatus of claim 2, wherein the mounting bore includes a first bore section having a first guide surface that tapers in a direction from the rotor seat to the first end cap;

The connecting shaft comprises a first shaft section and a second shaft section which are connected, and the first shaft section is connected with the rotor;

the second shaft section is provided with a second guide surface matched with the first guide surface, the second shaft section stretches into the mounting hole, and the second guide surface of the second shaft section is in contact with the first guide surface of the first hole section.

4. The pump body assembly of claim 3, wherein,

The second shaft section comprises a guide section and a fixed section which are connected, the second guide surface is arranged on the guide section, and the fixed section is fixedly connected with the first end cover;

an extension line of the outer contour of the first guide surface is intersected on the interface of the guide section and the fixed section;

and an extension line of the outer contour of the second guide surface is intersected on the interface between the guide section and the fixed section.

5. A pump body arrangement according to claim 3, wherein the first and second guide surfaces are conical surfaces, the taper of the first and second guide surfaces being set to be the same.

6. The pump body apparatus of claim 4, wherein the fixed section is externally threaded;

The pump body device further comprises a fastener, and the fastener is sleeved on the thread so that the connecting shaft is connected with the first end cover.

7. The pump body apparatus of claim 6, wherein the pump body apparatus further comprises an elastic member;

the elastic piece is arranged between the fastener and the interface between the guide section and the fixing section, and the edge of the elastic piece is abutted against the first end cover.

8. The pump body apparatus of claim 4, wherein the mounting bore further comprises a second bore section in communication with the first bore section;

the guide section at least partially extends into the second hole section and is in clearance fit with the second hole section.

9. The pump body apparatus of claim 1, further comprising a drive assembly for driving the rotor in rotation.

10. The pump body apparatus of claim 9, further comprising an end cap base;

The driving assembly is arranged on the end cover base, a threaded hole is formed in the end cover base, a first through hole is formed in the first end cover, a second through hole is formed in the rotor base, and the first through hole, the second through hole and the threaded hole are communicated;

The pump body device further comprises a threaded piece, and the threaded piece sequentially penetrates through the first through hole, the second through hole and the threaded hole to be connected.

11. The pump body apparatus of claim 9, wherein the rotor is provided with a drive slot on a side facing away from the first end cap, and a plurality of transmission holes are circumferentially spaced along the drive slot;

The pump body device further comprises a driving ring, the driving ring comprises a ring body and a plurality of transmission pieces arranged at intervals along the circumferential direction of the ring body, the ring body is sleeved on a driving shaft of the driving assembly, the ring body is installed in the driving groove, and the transmission pieces penetrate through the transmission holes.

12. Pump body arrangement according to claim 11, wherein the ring body is in a clearance fit with the drive slot, and the transmission member is in a clearance fit with the transmission bore.

13. A compressor comprising a pump body arrangement according to any one of claims 1 to 12.

14. A vehicle comprising a compressor as claimed in claim 13.