CN118167624A - Compressor with a compressor body having a rotor with a rotor shaft - Google Patents

Abstract

The application provides a compressor, which comprises a driving shaft assembly, an eccentric sleeve assembly and a turbine assembly, wherein the turbine assembly comprises a movable scroll, the movable scroll is provided with an eccentric sleeve mounting cavity, the eccentric sleeve mounting cavity is positioned at one side of the movable scroll facing the driving shaft assembly, the driving shaft assembly comprises an eccentric shaft, the eccentric sleeve assembly comprises an eccentric part and a balancing part, the eccentric part is connected with the eccentric shaft, and the eccentric part is at least partially positioned in the eccentric sleeve mounting cavity; the compressor is provided with an oil return cavity and an oil storage cavity, the inlet end of the oil storage cavity can be communicated with the oil return cavity, and the outlet end of the oil storage cavity can be communicated with the eccentric sleeve mounting cavity; the eccentric sleeve assembly is provided with a first oil return channel, the first oil return channel is positioned at the eccentric part, the inlet end of the first oil return channel is communicated with the eccentric sleeve installation cavity, and the outlet end of the first oil return channel is communicated with the oil return cavity. The compressor provided by the application can reduce the impact of oil liquid and the balance part, and reduce the influence on the dynamic balance of the whole compressor.

Description

Compressor with a compressor body having a rotor with a rotor shaft

Technical Field

The application relates to a compressor, in particular to an eccentric sleeve structure of the compressor.

Background

The compressor comprises a fixed vortex disc and an movable vortex disc, when the movable vortex disc moves in translation and rotates, a closed gas chamber formed by the movable vortex disc and the fixed vortex disc rotates simultaneously and the volume becomes smaller, so that the compression of refrigerant gas is realized, and when the gas is compressed to a certain pressure, the gas is discharged through small holes on the fixed vortex disc, so that the circulation and the refrigeration effect of a refrigeration system are realized.

The related art discloses a compressor, and further comprises a main shaft and an eccentric sleeve assembly, wherein the main shaft drives a movable scroll of the compressor to rotate in a translational mode through the eccentric sleeve assembly. The eccentric sleeve assembly comprises an eccentric sleeve and a balance weight part, the movable vortex disk is provided with a hub part, and the eccentric sleeve is matched with a central cavity of the hub part so as to control the movable vortex disk to move in a translational mode. The oil return channel is arranged at the joint of the hub part and the movable vortex disc, and oil in the hub part is discharged through the oil return channel to realize oil return. However, when the balance weight member rotates along with the center of the main shaft, a large amount of oil discharged through the oil return passage at the hub portion collides with the balance weight member, and the phenomenon of oil striking can have a great influence on the dynamic balance of the whole compressor.

Disclosure of Invention

The application aims to provide a compressor and aims to reduce the influence of oil hammer on the dynamic balance of the whole compressor.

In order to achieve the above object, the present application provides a compressor comprising a driving shaft assembly, an eccentric bushing assembly and a turbine assembly, wherein the turbine assembly comprises a movable scroll having an eccentric bushing mounting cavity, the eccentric bushing mounting cavity is positioned at one side of the movable scroll toward the driving shaft assembly, the driving shaft assembly comprises an eccentric shaft, the eccentric bushing assembly comprises an eccentric part and a balancing part, the eccentric part is connected with the eccentric shaft, and the eccentric part is positioned at least partially in the eccentric bushing mounting cavity; the compressor is provided with an oil return cavity and an oil storage cavity, the inlet end of the oil storage cavity can be communicated with the oil return cavity, and the outlet end of the oil storage cavity can be communicated with the eccentric sleeve mounting cavity; the eccentric sleeve assembly is provided with a first oil return channel, the first oil return channel is positioned at the eccentric part, the inlet end of the first oil return channel is communicated with the eccentric sleeve mounting cavity, and the outlet end of the first oil return channel is communicated with the oil return cavity.

The compressor provided by the application is provided with an oil return cavity and an oil storage cavity, wherein the inlet end of the oil storage cavity can be communicated with the oil return cavity, and the outlet end of the oil storage cavity can be communicated with the eccentric sleeve mounting cavity; the eccentric sleeve assembly is provided with a first oil return channel, the first oil return channel is positioned at the eccentric part of the eccentric sleeve assembly, the inlet end of the first oil return channel is communicated with the eccentric sleeve mounting cavity, and the outlet end of the first oil return channel is communicated with the oil return cavity. And the eccentric sleeve mounting cavity is communicated with the oil return cavity through the oil return channel, and most of oil is discharged to the oil return cavity through the first oil return channel of the eccentric part during oil return, so that the impact of the oil and the balance part is reduced, and the influence on the dynamic balance of the whole compressor is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a cross-sectional view of a compressor provided by the present application;

FIG. 2 is a cross-sectional view of a drive shaft assembly and eccentric sleeve assembly of a compressor provided by the present application;

FIG. 3 is an exploded view of an eccentric sleeve assembly of a compressor provided by the present application;

FIG. 4 is a perspective view of a first eccentric sleeve of a compressor provided by the present application;

FIG. 5 is a perspective view of a second eccentric sleeve of a compressor provided by the present application;

FIG. 6 is a perspective view of a drive shaft assembly, eccentric sleeve assembly, first weight and second weight of a compressor provided by the present application;

FIG. 7 is a front view of another compressor provided by the present application;

FIG. 8 is a cross-sectional view taken along the direction A-A of FIG. 7;

FIG. 9 is a cross-sectional view of another compressor provided by the present application;

fig. 10 is a top view of a drive shaft assembly and eccentric sleeve assembly of another compressor provided by the present application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In order to reduce the impact of the oil hammer phenomenon and the impact of the balance part on the dynamic balance of the whole compressor, the application provides a compressor, referring to fig. 9 and 10, in some embodiments, the compressor comprises a driving shaft assembly 3, an eccentric sleeve assembly 4 and a turbine assembly 5, the turbine assembly 5 comprises a movable vortex plate 52, the movable vortex plate 52 is provided with an eccentric sleeve mounting cavity 5210, the eccentric sleeve mounting cavity 5210 is positioned on one side of the movable vortex plate 52 facing the driving shaft assembly 3, the driving shaft assembly 3 comprises an eccentric shaft 32, the eccentric sleeve assembly 4 comprises an eccentric part 410 and a balance part 412, the eccentric part 410 is connected with the eccentric shaft 32, the eccentric part 410 is at least partially positioned in the eccentric sleeve mounting cavity 5210, and the driving shaft assembly 3 drives the turbine assembly 5 to rotate through the eccentric translation sleeve assembly 4; the compressor is provided with an oil return cavity 100 and an oil storage cavity 13, wherein the inlet end of the oil storage cavity 13 can be communicated with the oil return cavity 100, and the outlet end of the oil storage cavity 13 can be communicated with an eccentric sleeve mounting cavity 5210; the eccentric sleeve assembly 4 has a first oil return passage 40, the first oil return passage 40 is located at the eccentric portion 410, an inlet end of the first oil return passage 40 communicates with the eccentric sleeve mounting chamber 5210, and an outlet end of the first oil return passage 40 communicates with the oil return chamber 100. According to the application, the eccentric sleeve mounting cavity 5210 is communicated with the oil return cavity 100 through the oil return channel 40, and most of oil is directly discharged to the oil return cavity 100 through the first oil return channel 40 of the eccentric part 410 in the oil return process, so that the impact of the oil and the balance part 412 is reduced, and the influence on the dynamic balance of the whole compressor is reduced.

Referring to fig. 3 and 10, in some embodiments, the eccentric portion 410 and the balance portion 412 are distributed in a direction perpendicular to the axis of the eccentric shaft 32, and the eccentric portion 410 is connected to the balance portion 412; the eccentric portion 410 includes a second eccentric sleeve 42 and an eccentric limiting portion 411, the second eccentric sleeve 42 and the eccentric limiting portion 411 being arranged along the axial direction of the eccentric shaft 32; the first oil return passage 40 includes a first oil return hole 41c and a second oil return hole 42b, the first oil return hole 41c being located at the eccentric limit portion 411, the second oil return hole 42b being located at the second eccentric sleeve 42, the first oil return hole 41c and the second oil return hole 42b communicating.

Referring to fig. 3 again, in some embodiments, the first oil return hole 41c penetrates the eccentric limiting portion 411 in the axial direction, and the second oil return hole 42b penetrates the second eccentric sleeve 42 in the axial direction; defining a plane perpendicular to the axial direction of the eccentric shaft 32 as a second projection plane, wherein the projections of the first oil return hole 41c and the second oil return hole 42b on the second projection plane are at least partially overlapped; the balance portion 412 is connected to the eccentric limit portion 411, and the eccentric limit portion 411 and the balance portion 412 are distributed in a direction perpendicular to the axis of the eccentric shaft 32. In some embodiments, the first oil return hole 41c and the second oil return hole 42b are respectively located at positions corresponding to the eccentric limiting portion 411 and the second eccentric sleeve 42, and the number of the first oil return hole 41c and the number of the second oil return holes 42b are the same, and in particular embodiments, the number of the first oil return hole 41c and the number of the second oil return holes 42b are 2, as shown in fig. 3.

Referring to fig. 1, in some embodiments, the second eccentric sleeve 42 is at least partially positioned within the eccentric sleeve mounting cavity 5210; the second eccentric sleeve 42 is rotatable with respect to the eccentric limiting portion 411. In a specific embodiment, the second eccentric sleeve 42 and the eccentric limiting portion 411 are separated, and the balance portion 412 is connected with the eccentric limiting portion 411. That is, in some embodiments, the eccentric sleeve assembly 4 includes a first eccentric sleeve 41 and a second eccentric sleeve 42, referring to fig. 3 to 5, the first eccentric sleeve 41 and the second eccentric sleeve 42 are arranged along the axial direction of the eccentric shaft 32. Wherein the first eccentric sleeve 41 includes an eccentric limiting portion 411 and a balancing portion 412.

Referring to fig. 3 to 5, in other embodiments, the eccentric limiting portion 411 of the first eccentric sleeve 41 and the second eccentric sleeve 42 are assembled by a rotational connection. Specifically, the eccentric limiting portion 411 of the first eccentric sleeve 41 is in circumferential limiting connection with the driving shaft assembly 3, and the second eccentric sleeve 42 is rotatable relative to the eccentric limiting portion 411 of the first eccentric sleeve 41. In some embodiments, the first oil return holes 41c and the second oil return holes 42b may be the same in number, and arranged in one-to-one correspondence.

When the eccentric limiting portion 411 of the first eccentric sleeve 41 and the second eccentric sleeve 42 are rotatably connected, in some specific embodiments, the eccentric sleeve assembly 4 further includes a first limiting portion 4110, the first limiting portion 4110 is connected with one of the first eccentric sleeve 41 and the second eccentric sleeve 42, the other of the first eccentric sleeve 41 and the second eccentric sleeve 42 has a limiting groove 421, the first limiting portion 4110 is at least partially located in the limiting groove 421, and the second eccentric sleeve 42 can rotate at a certain angle relative to the first eccentric sleeve 41 by using the first limiting portion 4110 and the limiting groove 421, so as to realize radially flexible limiting of the orbiting scroll 52. That is, the second eccentric sleeve 42 is utilized to perform flexible compensation, the second eccentric sleeve 42 and the movable vortex disk 52 deflect and adjust the mass center, so that vibration of the movable vortex disk 52 caused by liquid impact or foreign particles in a medium is reduced, during flexible compensation, the movable vortex disk 52 is retracted, at the moment, the mass center of the second eccentric sleeve 42 can deflect along with the retraction amount, and because the second eccentric sleeve 42 and the first eccentric sleeve 41 can rotate relatively, the first eccentric sleeve 41 and the driving shaft assembly 3 are limited in the circumferential direction, the mass center of the first eccentric sleeve 41 cannot change along with the first eccentric sleeve, and accordingly, the influence of the change of the mass center of the first eccentric sleeve 41 on the dynamic balance of the whole compressor is reduced, and vibration is reduced to a certain extent. In addition, when the second eccentric sleeve 42 rotates within a certain angle relative to the eccentric limiting portion 411 of the first eccentric sleeve 41, the projection of the first oil return hole 41c and the second oil return hole 42b on the second projection surface at least partially coincides, so that the state that the first oil return hole 41c is communicated with the second oil return hole 42b is maintained when the second eccentric sleeve 42 rotates relatively.

In other embodiments, the second eccentric sleeve 42 is at least partially positioned within the eccentric sleeve mounting cavity 5210; the second eccentric sleeve 42 is fixedly connected with the eccentric limiting part 411; the eccentric limiting part 411 of the first eccentric sleeve 41 and the second eccentric sleeve 42 are fixedly connected, in a specific embodiment, the connection mode of the two eccentric limiting parts is not particularly limited, the two eccentric limiting parts can be detachably connected or can be non-detachably connected, for example, the first eccentric sleeve 41 and the second eccentric sleeve 42 are connected in one or a combination mode of two independent parts before assembly through bonding, riveting, welding, bolting and clamping, wherein the bolting can prevent loosening through increasing the pretightening force, the phase change of material components at the joint can not be caused, the disassembly is convenient, and the overhaul is convenient; the welding connection does not need drilling, the section is not weakened, no additional connecting piece is needed, the structure is simple, the tightness of the welding structure is good, and the rigidity and the integrity are both larger; the adhesive has uniform internal stress distribution, can connect different materials, is suitable for connecting thin materials, can connect materials with different thicknesses, has better adhesive for isolating external corrosive media, is an insulating substance, can reduce electrochemical corrosion of a base material piece, does not have the problem of weakening the strength of the base material caused by similar riveting and screw holes, does not need to consider the dimensional matching problem of the parts, has certain elasticity, and can be used in places with vibration. Of course, the eccentric limiting portion 411 of the first eccentric sleeve 41 and the second eccentric sleeve 42 may be directly machined into a single piece during the machining process, for example, one or a combination of several of machining, casting, powder metallurgy, metal powder injection molding, and press molding, for example, may be machined into a single piece, may be molded into a single piece by casting, powder metallurgy, metal injection molding, and press molding, or may be re-machined by machining after the integral piece is formed. At this time, the first oil return holes 41c and the second oil return holes 42b may be the same in number and arranged in one-to-one correspondence such that the axial directions of the first oil return holes 41c and the second oil return holes 42b coincide, and the first oil return passage 40 may be formed by one-time processing.

Referring to fig. 2, in still other embodiments, the driving shaft assembly 3 further includes an axial limiter 30 and a main shaft 31, the main shaft 31 and the eccentric shaft 32 are disposed along the axial direction of the driving shaft assembly 3, the axial limiter 30 is connected with the eccentric shaft 32, an end of the axial limiter 30 facing the main shaft 31 has a fourth stop surface 301, an end of the main shaft 31 facing the eccentric shaft 32 has a fifth stop surface 311, and the first eccentric sleeve 41 and the second eccentric sleeve 42 are at least partially located between the fifth stop surface 311 and the fourth stop surface 301; axial limiting of the first eccentric sleeve 41 and the second eccentric sleeve 42 is achieved by the fifth stop surface 311 and the fourth stop surface 301, in some embodiments, the axial limiting member 30 is a clamping spring, the eccentric shaft 32 is provided with a limiting clamping groove 320, an inner ring of the clamping spring is clamped in the limiting clamping groove 320, and a side of the clamping spring facing the second eccentric sleeve 42 is provided with the fourth stop surface 301.

Referring again to fig. 1, in some embodiments, the compressor further includes a first bearing 522, the first bearing 522 being located between the eccentric portion 410 and the orbiting scroll 52; in particular embodiments, the outer side of the first bearing 522 is in interference fit with the orbiting scroll 52, the inner side of the first bearing 522 is in clearance fit with the second eccentric sleeve 42 of the eccentric portion 410, and the orbiting fit of the orbiting scroll 52 with the second eccentric sleeve 42 is achieved by the first bearing 522, in some embodiments, the first bearing 522 may be a sliding bearing; the first bearing 522 is at least partially disposed in the eccentric sleeve mounting cavity 5210, and the second eccentric sleeve 42 is at least partially disposed in the inner cavity of the first bearing 522 to drive the orbiting scroll 52 to translate and rotate. In some specific embodiments, the axes of the eccentric sleeve mounting cavity 5210 and the first bearing 522 coincide.

Referring again to fig. 1, in some embodiments, the compressor further includes a casing 1, a first support 6 and a second support 7, the first support 6 and the second support 7 are connected to the casing 1, and the driving shaft assembly 3 is rotatably connected to the first support 6 and the second support 7; in a specific embodiment, the first supporting seat 6 is assembled and connected with the housing 1 in a split manner, the second supporting seat 7 is integrated with the housing 1, and the driving shaft assembly 3 is axially limited by using the first supporting seat 6 and the second supporting seat 7. The compressor further comprises a second bearing 60 and a third bearing 70, the second bearing 60 and the third bearing 70 are respectively connected with the first supporting seat 6 and the second supporting seat 7, the second bearing 60 is located between the driving shaft assembly 3 and the first supporting seat 6, the third bearing 70 is located between the driving shaft assembly 3 and the second supporting seat 7, the second bearing 60 and the third bearing 70 are utilized to realize the running fit of the driving shaft assembly 3 and the first supporting seat 6 and the second supporting seat 7, and in some specific embodiments, the second bearing 60 and the third bearing 70 can adopt sliding bearings.

Referring to fig. 1, in some embodiments, the compressor further includes an oil supply device 10, the driving shaft assembly 3 has an oil supply passage 33, an oil inlet of the oil supply device 10 can communicate with the oil storage chamber 13, and an oil outlet of the oil supply device 10 can communicate with an inlet end of the oil supply passage 33; the first support seat 6 has a second mounting cavity 601, the second support seat 7 has a third mounting cavity 701, the second bearing 60 is at least partially located in the second mounting cavity 601, the third bearing 70 is at least partially located in the third mounting cavity 701, and the outlet end of the oil supply passage 33 communicates with at least one of the eccentric sleeve mounting cavity 5210, the second mounting cavity 601, and the third mounting cavity 701. Oil can be provided to the positions of the bearings at the eccentric sleeve mounting cavity 5210, the second mounting cavity 601 and the third mounting cavity 701 through the oil supply passage 33 for lubrication; in a specific embodiment, the second support seat 7 includes a plurality of support rods, and a center seat at the intersection of the plurality of support rods, and the third mounting cavity 701 is located in the center seat.

Referring to fig. 10, in some embodiments, the compressor further has a lubrication channel 4230, the lubrication channel 4230 is located between the second eccentric sleeve 42 and the first bearing 522, and referring to fig. 4, in particular embodiments, the second eccentric sleeve 42 has an oil groove 423, the oil groove 423 is located at a side of the second eccentric sleeve 42 facing the lubrication channel 4230, and oil entering the eccentric sleeve mounting chamber 5210 can lubricate the first bearing 522 through the lubrication channel 4230. In some embodiments, the oil grooves 423 may be single-sided grooves, and spiral grooves may also be employed.

Referring again to fig. 1 and 2, in some embodiments, the oil supply passage 33 includes a main oil passage 331 and an auxiliary oil passage 332, the main oil passage 331 extends axially through the drive shaft assembly 3, an inlet end of the main oil passage 331 is communicable with the oil supply device 10, and an outlet end of the main oil passage 331 is communicable with the eccentric sleeve mounting chamber 5210; an inlet end of the auxiliary oil duct 332 is communicated with the main oil duct 331, and an outlet end of the auxiliary oil duct 332 is communicated with at least one of the second mounting cavity 601 and the third mounting cavity 701; the auxiliary oil passage 332 is used for providing oil to the positions of the bearings at the second mounting cavity 601 and the third mounting cavity 701 for lubricating the bearings, and the main oil passage 331 is used for providing oil to the positions of the bearings at the eccentric sleeve mounting cavity 5210 for lubricating the bearings.

Referring to fig. 2 and 9 again, in some embodiments, the main oil passage 331 may be one axially disposed oil passage, or may be more than two oil passages, where each oil passage of the main oil passage 331 is communicated and may be parallel or coincident with the axis of the driving shaft assembly 3. In some specific embodiments, the main oil passage 331 includes a first oil passage 331a and a second oil passage 331b, the first oil passage 331a and the second oil passage 331b being arranged along the axial direction of the drive shaft assembly 3, an inlet end of the first oil passage 331a communicating with an oil outlet of the oil supply device 10. The outlet end of the first oil passage 331a communicates with the inlet end of the second oil passage 331b, and the outlet end of the second oil passage 331b faces the eccentric shaft 32 and communicates with the eccentric sleeve mounting chamber 5210; the driving shaft assembly 3 further comprises a main shaft 31, the main shaft 31 and the eccentric shaft 32 are arranged along the axial direction of the driving shaft assembly 3, the main shaft 31 is connected with the eccentric shaft 32, the second oil duct 331b is parallel to the axis of the main shaft 31, so that the second oil duct 331b is eccentrically arranged, and the first oil duct 331a can be coincident with the axis of the main shaft 31, so that the processing is convenient. When the speed of the drive shaft assembly 3 increases, centrifugal force is generated, helping to generate upward thrust. In a specific embodiment, referring to fig. 1, the number of the auxiliary oil channels 332 may be two, and the outlet ends of the auxiliary oil channels 332 are respectively communicated with the second installation cavity 601 and the third installation cavity 701, and the lubricating oil is led into the positions of the bearings of the second installation cavity 601 and the third installation cavity 701 through the auxiliary oil channels 332, so as to reduce friction between the first bearing 522 and the second eccentric sleeve 42, and friction between the second bearing 60, the third bearing 70 and the driving shaft assembly 3. Furthermore, in some embodiments, the compressor further includes a casing 1 and an end cover 12, the end cover 12 is connected to one end of the casing 1, the oil storage chamber 13 is located between the end cover 12 and the casing 1, and the oil supply device 10 is located in the oil storage chamber 13.

Referring again to fig. 9, in some embodiments, the compressor further includes a driving device 2, the driving device 2 is connected to the driving shaft assembly 3, the oil return cavity 100 includes a first oil return cavity 100a and a second oil return cavity 100b, the first oil return cavity 100a is located between the first support seat 6 and the turbine assembly 5, and the second oil return cavity 100b is located between the first support seat 6 and the driving device 2; the first support seat 6 has a second oil return passage 61, an inlet end of the second oil return passage 61 communicates with the first oil return chamber 100a, and an outlet end of the second oil return passage 61 communicates with the second oil return chamber 100b. In a specific embodiment, the second oil return passage 61 extends along the axial direction of the first support seat 6 to communicate the first oil return chamber 100a and the second oil return chamber 100b.

Referring again to fig. 9, in some embodiments, the compressor further includes a third oil return passage 101, one end of the third oil return passage 101 communicates with the oil return chamber 100, and the other end of the third oil return passage 101 communicates with the oil reservoir chamber 13; the drive device 2 comprises a stator 21 and a rotor 22, the rotor 22 being connected to the drive shaft assembly 3, the rotor 22 being at least partially located in the stator 21; the third oil return passage 101 is located between the stator 21 and the casing 1, and in some embodiments, at least one of the stator 21 and the casing 1 has a return surface 211a, the return surface 211a being located on a side facing the third oil return passage 101, the third oil return passage 101 being located between the first return surface 211a and an inner wall of the casing 1. In a specific embodiment, the backflow surface 211a is located on the stator 21, the plurality of third oil return passages 101 are located between the plurality of backflow surfaces 211a and the inner wall of the casing 1, that is, the plurality of third oil return passages 101 are circumferentially spaced apart from the outer periphery of the stator 21, and each third oil return passage 101 extends along the axial direction of the stator 21 to communicate the oil return chamber 100 with the oil storage chamber 13, so as to facilitate oil return. In other embodiments, a plurality of U-shaped concave backflow surfaces 211a may be provided in the casing 1, and the U-shaped concave backflow surfaces 211a may form a plurality of third oil return passages 101 with the outer periphery of the stator 21, so as to enable the oil storage chamber 13 to communicate with the oil return chamber 100.

Referring again to fig. 9, in some embodiments, the compressor further includes an oil separation cover 14, the oil separation cover 14 is located in the second oil return cavity 100b, and the oil separation cover 14 is connected to at least one of the housing 1 and the first support seat 6; the plane perpendicular to the axial direction of the eccentric shaft 32 is defined as a second projection plane, and the projections of the rotor 22 on the second projection plane all fall into the projections of the oil separation cover 14 on the second projection plane. In a specific embodiment, the outer diameter of the rotor 22 is smaller than the outer diameter of the oil-separating cover 14, and the outer view of the oil-separating cover 14 is smaller than the outer diameter of the stator 21, so that the returned oil can be guided to the side of the stator 21 through the oil-separating cover 14, so as to reduce the oil striking of the rotor 22 by the oil and reduce the influence on power.

Referring to fig. 9 again, in some embodiments, the oil-separating cover 14 includes a diversion cover 141, and a side of the diversion cover 141 facing away from the driving device 2 has a diversion surface 141a, and an outer ring side of the diversion surface 141a is inclined toward an end of the driving device 2. The oil separation cover 14 further comprises an extension part 142, the extension part 142 is connected with the diversion cover 141, the extension part 142 extends axially from the periphery of the oil separation cover 14 towards the position of the driving device 2, so that oil can be guided to the position of the winding on the inner side of the stator 21, and when passing through the winding of the stator 21, part of heat of the stator 21 can be taken away to cool the driving device 2.

In order to reduce the vibration of the whole machine of the compressor, the present application also proposes a compressor, referring to fig. 1 to 3, in some embodiments, the compressor comprises a driving shaft assembly 3, an eccentric sleeve assembly 4 and a turbine assembly 5, the turbine assembly 5 comprises a movable scroll 52, the movable scroll 52 has an eccentric sleeve mounting cavity 5210, the eccentric sleeve mounting cavity 5210 is positioned on the side of the movable scroll 52 facing the driving shaft assembly 3, the driving shaft assembly 3 comprises an eccentric shaft 32, and the eccentric sleeve assembly 4 is connected with the eccentric shaft 32; the eccentric sleeve assembly 4 includes a first eccentric sleeve 41 and a second eccentric sleeve 42, the first eccentric sleeve 41 and the second eccentric sleeve 42 are arranged along the axial direction of the eccentric shaft 32, the first eccentric sleeve 41 is in circumferential limit connection with the driving shaft assembly 3, the first eccentric sleeve 41 includes a balancing portion 412, the second eccentric sleeve 42 can rotate relative to the first eccentric sleeve 41, and the second eccentric sleeve 42 is at least partially located in the eccentric sleeve installation cavity 5210. When the second eccentric sleeve 42 is utilized to carry out flexible compensation and the second eccentric sleeve 42 and the movable vortex plate 52 deflect and adjust the mass center, the vibration of the movable vortex plate 52 caused by the conditions of liquid impact, foreign particles in a medium and the like is reduced; during flexible compensation, the movable scroll 52 is retracted, and at this time, the center of mass of the eccentric sleeve is offset along with the retraction amount, and because the second eccentric sleeve 42 and the first eccentric sleeve 41 can rotate relatively, the first eccentric sleeve 41 and the driving shaft assembly 3 are limited in the circumferential direction, the center of mass of the first eccentric sleeve 41 cannot be changed together, so that the influence on the dynamic balance of the whole machine of the compressor caused by the change of the center of mass of the first eccentric sleeve 41 is reduced, and the vibration is reduced to a certain extent.

Referring to fig. 2 and 3 again, in some embodiments, the eccentric sleeve assembly 4 includes a first limiting portion 4110, the first limiting portion 4110 is connected with one of the first eccentric sleeve 41 and the second eccentric sleeve 42, the other of the first eccentric sleeve 41 and the second eccentric sleeve 42 has a limiting groove 421, and the first limiting portion 4110 is at least partially located in the limiting groove 421. In the present embodiment, the first limiting portion 4110 and the limiting groove 421 are utilized to enable the second eccentric sleeve 42 to rotate at a certain angle relative to the first eccentric sleeve 41, so as to realize the radial flexible limiting of the orbiting scroll 52. When the movable scroll 52 moves relative to the fixed scroll 51 due to the liquid impact or the foreign particles in the medium, the center of mass of the movable scroll 52 is shifted, the second eccentric sleeve 42 rotates relative to the first eccentric sleeve 41, and the variation of the eccentricity of the second eccentric sleeve 42 can reduce the vibration of the movable scroll 52, and in this process, the first limiting portion 4110 rotates along the limiting groove 421;

referring to fig. 3 again, in other embodiments, the eccentric sleeve assembly 4 further includes a first stop surface 421a and a second stop surface 421b, the limiting groove 421 is disposed along the circumferential direction of the eccentric shaft 32, the first stop surface 421a and the second stop surface 421b are respectively located at two ends of the limiting groove 421 along the circumferential direction of the eccentric shaft 32, and when the first eccentric sleeve 41 and the second eccentric sleeve 42 rotate relatively, the rotation angle of the first limiting portion 4110 in the limiting groove 421 is limited to limit the rotation angle of the second eccentric sleeve 42 relative to the first eccentric sleeve 41.

In some embodiments, the second eccentric sleeve 42 is located at a side of the first eccentric sleeve 41 facing the orbiting scroll 52, the second eccentric sleeve 42 has a limiting groove 421, the first eccentric sleeve 41 includes a first limiting portion 4110, and the limiting groove 421 is located at a side of the second eccentric sleeve 42 facing the first eccentric sleeve 41, and the first limiting portion 4110 is located at a side of the first eccentric sleeve 41 facing the second eccentric sleeve 42. In some embodiments, the limiting groove 421 is an arcuate groove. Of course, in other embodiments, the first eccentric sleeve 41 may have a limiting groove 421, and the second eccentric sleeve 42 may include a first limiting portion 4110.

Referring again to fig. 2-5, in other embodiments, the first eccentric sleeve 41 has a first eccentric limiting aperture 41a, the first eccentric limiting aperture 41a extends axially through the first eccentric sleeve 41, the second eccentric sleeve 42 has a second eccentric limiting aperture 42a, the second eccentric limiting aperture 42a extends axially through the second eccentric sleeve 42, the axis of the second eccentric limiting aperture 42a is parallel to the axis of the second eccentric sleeve 42, the two are arranged eccentrically, the eccentric shaft 32 is located in the second eccentric limiting aperture 42a and the first eccentric limiting aperture 41a, and in some specific embodiments, the axes of the first eccentric limiting aperture 41a, the second eccentric limiting aperture 42a and the eccentric shaft 32 are coincident. The drive shaft assembly 3 further comprises a main shaft 31, the main shaft 31 and an eccentric shaft 32 are arranged along the axial direction of the drive shaft assembly 3, the main shaft 31 is connected with the eccentric shaft 32, and the main shaft 31 is parallel to the axis of the eccentric shaft 32; the first eccentric sleeve 41 also has a third stop surface 41b, the third stop surface 41b being located on the side of the first eccentric sleeve 41 facing the main shaft 31. The plane perpendicular to the axial direction of the spindle 31 is defined as a first projection plane, and the circle center of the circle where the projection of the third stop surface 41b on the first projection plane is coincident with the circle center of the circle where the projection of the spindle 31 on the first projection plane is located. In some embodiments, the third stop surface 41b is an arc surface, and is located outside the outer peripheral wall of the main shaft 31 and matched with the outer Zhou Bishi of the main shaft 31, and meanwhile, the eccentric shaft 32 penetrates through the first eccentric limiting hole 41a to realize circumferential limitation of the first eccentric sleeve 41, so that the first eccentric sleeve 41 and the eccentric shaft 32 are relatively fixed.

Referring to fig. 2 to 5 again, in other embodiments, the first eccentric sleeve 41 further includes an eccentric limiting portion 411, the eccentric limiting portion 411 is connected to a balancing portion 412, the eccentric limiting portion 411 and the balancing portion 412 are distributed along a direction perpendicular to the axis of the eccentric shaft 32, the first eccentric limiting hole 41a is located at the eccentric limiting portion 411, and the third stop surface 41b is located at a side of the balancing portion 412 facing the main shaft 31. In a specific embodiment, the connection manner of the eccentric limiting portion 411 and the balance portion 412 is not specifically limited, and may be detachable connection or non-detachable connection, for example, the eccentric limiting portion 411 and the balance portion 412 may be connected by one or a combination of two separate components before assembly through bonding, riveting, welding, bolting, and clamping. The eccentric limiting portion 411 and the balance portion 412 may be directly machined into one piece during machining, for example, one or a combination of machining, casting, powder metallurgy, metal powder injection molding, and stamping to form a single piece. The balancing portion 412 includes a first extending portion 412a and a second extending portion 412b, where the first extending portion 412a and the second extending portion 412b are distributed along the axial direction of the eccentric shaft 32, the first extending portion 412a is located on a side of the balancing portion 412 opposite to the orbiting scroll 52, the third stop surface 41b is located on a side of the first extending portion 412a facing the main shaft 31, the second extending portion 412b is located on a side of the balancing portion 412 facing the orbiting scroll 52, and in a specific embodiment, a radius of a circle where a cross section of an inner wall of the second extending portion 412b is located is larger than a radius of a circle where a cross section of an outer wall of the eccentric sleeve mounting portion 521 is located, so that interference between the eccentric sleeve mounting portion 521 and the second extending portion 412b during assembly is avoided.

In some embodiments, the first limiting portion 4110 is connected to the eccentric limiting portion 411, in particular embodiments, the connection manner of the first limiting portion 4110 and the eccentric limiting portion 411, and the connection manner of the eccentric limiting portion 411 and the balance portion 412 are not limited, and may be detachable connection or non-detachable connection, for example, the first limiting portion 4110 and the eccentric limiting portion 411 may be connected by one or a combination of two separate parts before assembly, such as bonding, riveting, welding, bolting, and clamping, where the bolting may prevent loosening by increasing the pretightening force, and may not cause phase change of material components at the connection portion, and is convenient to detach and overhaul; the welding connection does not need drilling, the section is not weakened, no additional connecting piece is needed, the structure is simple, the tightness of the welding structure is good, and the rigidity and the integrity are both larger; the adhesive has uniform internal stress distribution, can connect different materials, is suitable for connecting thin materials, can connect materials with different thicknesses, has better adhesive for isolating external corrosive media, is an insulating substance, can reduce electrochemical corrosion of a base material piece, does not have the problem of weakening the strength of the base material caused by similar riveting and screw holes, does not need to consider the dimensional matching problem of the parts, has certain elasticity, and can be used in places with vibration;

In other embodiments, the first limiting portion 4110 and the eccentric limiting portion 411 may be directly machined into one piece during the machining process, for example, one piece or a combination of several of machining, casting, powder metallurgy, metal powder injection molding, and stamping forming may be performed, for example, the first limiting portion and the eccentric limiting portion may be machined into one piece, or may be formed into one piece by casting, powder metallurgy, metal injection molding, stamping, or the like, or may be re-machined by machining after the first limiting portion and the eccentric limiting portion are formed into one piece.

Referring again to fig. 2, in some embodiments, the drive shaft assembly 3 further includes an axial limiter 30 and a main shaft 31, the main shaft 31 and the eccentric shaft 32 are disposed along the axial direction of the drive shaft assembly 3, the axial limiter 30 is connected with the eccentric shaft 32, an end of the axial limiter 30 facing the main shaft 31 has a fourth stop surface 301, an end of the main shaft 31 facing the eccentric shaft 32 has a fifth stop surface 311, and the first eccentric sleeve 41 and the second eccentric sleeve 42 are at least partially located between the fifth stop surface 311 and the fourth stop surface 301; axial limiting of the first eccentric sleeve 41 and the second eccentric sleeve 42 is achieved by the fifth stop surface 311 and the fourth stop surface 301, in some embodiments, the axial limiting member 30 is a clamping spring, the eccentric shaft 32 is provided with a limiting clamping groove 320, an inner ring of the clamping spring is clamped in the limiting clamping groove 320, and a side of the clamping spring facing the second eccentric sleeve 42 is provided with the fourth stop surface 301.

Referring again to fig. 1, in some embodiments, the compressor further includes a first bearing 522, the first bearing 522 being located between the second eccentric sleeve 42 and the orbiting scroll 52; in particular embodiments, the outer side of first bearing 522 is in interference fit with orbiting scroll 52, the inner side of first bearing 522 is in clearance fit with second eccentric sleeve 42, and the rotational fit of orbiting scroll 52 with second eccentric sleeve 42 is achieved by first bearing 522, in some embodiments, first bearing 522 may be a sliding bearing. The orbiting scroll 52 further includes an eccentric sleeve mounting portion 521, the eccentric sleeve mounting portion 521 extends toward the side of the eccentric sleeve assembly 4 along the axial direction of the orbiting scroll 52, the eccentric sleeve mounting portion 521 has an eccentric sleeve mounting cavity 5210, the first bearing 522 is at least partially located in the eccentric sleeve mounting cavity 5210, and the second eccentric sleeve 42 is at least partially located in the inner cavity of the first bearing 522 to drive the orbiting scroll 52 to translationally rotate. In some specific embodiments, the axes of the eccentric sleeve mounting cavity 5210 and the first bearing 522 coincide.

Referring again to fig. 1 and 6, in some embodiments, the compressor further includes a first counterweight 8 and a second counterweight 9, the eccentric sleeve assembly 4, the first counterweight 8, and the second counterweight 9 being spaced apart along the axial direction of the drive shaft assembly 3; the compressor further comprises a driving device 2, the driving device 2 comprises a stator 21 and a rotor 22, the rotor 22 is connected with the driving shaft assembly 3, the rotor 22 is positioned between the first balance block 8 and the second balance block 9, the first balance block 8 and the second balance block 9 are connected with the rotor 22, in some embodiments, the compressor further comprises a plurality of connecting rods 20a, a first supporting disc 20b and a second supporting disc 20c, the first balance block 8 is positioned on one side of the first supporting disc 20b facing away from the second supporting disc 20c, the second balance block 9 is positioned on one side of the second supporting disc 20c facing away from the first supporting disc 20b, the rotor 22 is positioned between the first supporting disc 20b and the second supporting disc 20c, and the first balance block 8 and the second balance block 9 are connected with the first supporting disc 20b and the second supporting disc 20c through a plurality of connecting rods 20 a. The connecting rod 20a may axially penetrate through the rotor 22, and one end of the connecting rod 20a is connected to the first balance weight 8, or simultaneously connected to the first balance weight 8 and the first support disc 20b; the other end of the connecting rod 20a is connected to the second weight 9, or simultaneously connects the second weight 9 and the second support plate 20c. The connection method of the connecting rod 20a and the first weight 8, the first support plate 20b, the second weight 9, and the second support plate 20c is not particularly limited, and may be one or a combination of two or more of bonding, riveting, welding, bolting, and clamping.

Referring again to fig. 1, in some embodiments, the compressor further includes a casing 1, a first support 6 and a second support 7, the first support 6 and the second support 7 are connected to the casing 1, and the driving shaft assembly 3 is rotatably connected to the first support 6 and the second support 7; in a specific embodiment, the first supporting seat 6 is assembled and connected with the shell 1 in a split way, the second supporting seat 7 and the shell 1 are integrated, and the driving shaft assembly 3 is axially limited by the first supporting seat 6 and the second supporting seat 7; the compressor further comprises a second bearing 60 and a third bearing 70, the second bearing 60 and the third bearing 70 are respectively connected with the first supporting seat 6 and the second supporting seat 7, the second bearing 60 is positioned between the driving shaft assembly 3 and the first supporting seat 6, the third bearing 70 is positioned between the driving shaft assembly 3 and the second supporting seat 7, the second bearing 60 and the third bearing 70 are utilized to realize the running fit of the driving shaft assembly 3 and the first supporting seat 6 and the second supporting seat 7, and in some embodiments, the second bearing 60 and the third bearing 70 can adopt sliding bearings;

In some embodiments, the first support base 6 has a second mounting cavity 601, the second support base 7 has a third mounting cavity 701, the second bearing 60 is at least partially located in the second mounting cavity 601, the third bearing 70 is at least partially located in the third mounting cavity 701, and in particular embodiments, the second support base 7 includes a plurality of support bars, and a center base located at the intersection of the plurality of support bars, the third mounting cavity 701 being located in the center base.

Referring again to fig. 1, in some embodiments, the compressor further includes an oil supply device 10 and an oil storage chamber 13, the oil supply device 10 and the oil storage chamber 13 are located in the casing 1, the driving shaft assembly 3 has an oil supply passage 33, an oil inlet of the oil supply device 10 can be communicated with the oil storage chamber 13, and an oil outlet of the oil supply device 10 can be communicated with an inlet end of the oil supply passage 33; the outlet end of the oil supply passage 33 communicates with at least one of the eccentric sleeve mounting chamber 5210, the second mounting chamber 601, and the third mounting chamber 701. Oil is supplied to the positions of the bearings at the eccentric sleeve mounting chamber 5210, the second mounting chamber 601, and the third mounting chamber 701 through the oil supply passage 33 for lubrication.

Referring again to fig. 1, in some embodiments, turbine assembly 5 further includes a fixed scroll 51, fixed scroll 51 engaging orbiting scroll 52, and a compression chamber 50 between fixed scroll 51 and orbiting scroll 52; the compressor further comprises a shell 1, an exhaust cover 11 and an exhaust cavity 111, wherein the exhaust cavity 111 is positioned between the fixed scroll 51 and the exhaust cover 11, the exhaust cover 11 is provided with an exhaust port 110, the exhaust port 110 is communicated with the exhaust cavity 111, the fixed scroll 51 is provided with an exhaust port 511, and the exhaust port 511 can be communicated with the exhaust cavity 111; the turbine assembly 5 comprises an exhaust valve 53, the exhaust valve 53 is connected with the fixed scroll 51 and used for controlling the opening and closing of the exhaust port 511, the turbine assembly 5 further comprises an exhaust valve limiting piece 54, the exhaust valve limiting piece 54 is connected with the fixed scroll 51, the exhaust valve 53 is located between the exhaust valve limiting piece 54 and the fixed scroll 51, when the pressure of refrigerant compression reaches a certain value, the exhaust valve 53 is pressed open, compressed refrigerant is discharged from the exhaust port 511, and the exhaust valve limiting piece 54 is used for limiting the opening degree of the exhaust valve assembly 53.

Some of the technical implementations in the above embodiments may be combined or replaced.

The technical principles of the present application have been described above in connection with specific embodiments, but it should be noted that the above descriptions are only for explaining the principles of the present application and should not be construed as limiting the scope of the present application in any way. Other embodiments of the application, or equivalents thereof, will suggest themselves to those skilled in the art without undue burden from the present disclosure, based on the explanations herein.

Claims (10)

1. Compressor, characterized by comprising a drive shaft assembly (3), an eccentric sleeve assembly (4) and a turbine assembly (5), the turbine assembly (5) comprising an orbiting scroll (52), the orbiting scroll (52) having an eccentric sleeve mounting cavity (5210), the eccentric sleeve mounting cavity (5210) being located on a side of the orbiting scroll (52) facing the drive shaft assembly (3), the drive shaft assembly (3) comprising an eccentric shaft (32), the eccentric sleeve assembly (4) comprising an eccentric portion (410) and a balancing portion (412), the eccentric portion (410) being connected with the eccentric shaft (32), the eccentric portion (410) being located at least partially in the eccentric sleeve mounting cavity (5210);

The compressor is provided with an oil return cavity (100) and an oil storage cavity (13), wherein the inlet end of the oil storage cavity (13) can be communicated with the oil return cavity (100), and the outlet end of the oil storage cavity (13) can be communicated with the eccentric sleeve mounting cavity (5210);

the eccentric sleeve assembly (4) is provided with a first oil return channel (40), the first oil return channel (40) is located at the eccentric part (410), the inlet end of the first oil return channel (40) is communicated with the eccentric sleeve mounting cavity (5210), and the outlet end of the first oil return channel (40) is communicated with the oil return cavity (100).

2. The compressor according to claim 1, characterized in that the eccentric portion (410) and the balancing portion (412) are distributed along a direction perpendicular to the axis of the eccentric shaft (32), the eccentric portion (410) being connected with the balancing portion (412); the eccentric part (410) comprises a second eccentric sleeve (42) and an eccentric limiting part (411), and the second eccentric sleeve (42) and the eccentric limiting part (411) are arranged along the axial direction of the eccentric shaft (32);

The first oil return channel (40) comprises a first oil return hole (41 c) and a second oil return hole (42 b), the first oil return hole (41 c) is located at the eccentric limiting part (411), the second oil return hole (42 b) is located at the second eccentric sleeve (42), and the first oil return hole (41 c) is communicated with the second oil return hole (42 b).

3. The compressor according to claim 2, wherein the first oil return hole (41 c) penetrates the eccentric limit portion (411) in the axial direction, and the second oil return hole (42 b) penetrates the second eccentric sleeve (42) in the axial direction;

defining a plane perpendicular to the axial direction of the eccentric shaft (32) as a second projection plane, wherein the projections of the first oil return hole (41 c) and the second oil return hole (42 b) on the second projection plane are at least partially overlapped;

the balance part (412) is connected with the eccentric limiting part (411), and the eccentric limiting part (411) and the balance part (412) are distributed along the direction perpendicular to the axis of the eccentric shaft (32).

4. The compressor of claim 2, wherein the second eccentric sleeve (42) is at least partially located in the eccentric sleeve mounting cavity (5210);

The second eccentric sleeve (42) can rotate relative to the eccentric limiting part (411); or the second eccentric sleeve (42) is fixedly connected with the eccentric limiting part (411).

5. The compressor according to any one of claims 1 to 4, further comprising a first bearing (522), the first bearing (522) being located between the eccentric portion (410) and the orbiting scroll (52);

The compressor further comprises a shell (1), a first supporting seat (6) and a second supporting seat (7), wherein the first supporting seat (6) and the second supporting seat (7) are connected with the shell (1); the compressor further comprises a second bearing (60) and a third bearing (70), wherein the second bearing (60) and the third bearing (70) are respectively connected with the first supporting seat (6) and the second supporting seat (7), the second bearing (60) is positioned between the driving shaft assembly (3) and the first supporting seat (6), and the third bearing (70) is positioned between the driving shaft assembly (3) and the second supporting seat (7);

the compressor further comprises an oil supply device (10), the driving shaft assembly (3) is provided with an oil supply passage (33), an oil inlet of the oil supply device (10) can be communicated with the oil storage cavity (13), and an oil outlet of the oil supply device (10) can be communicated with an inlet end of the oil supply passage (33); the first supporting seat (6) is provided with a second installation cavity (601), the second supporting seat (7) is provided with a third installation cavity (701), the second bearing (60) is at least partially positioned in the second installation cavity (601), the third bearing (70) is at least partially positioned in the third installation cavity (701), and the outlet end of the oil supply passage (33) is communicated with at least one of the eccentric sleeve installation cavity (5210), the second installation cavity (601) and the third installation cavity (701).

6. The compressor of claim 5, wherein the oil supply passage (33) includes a main oil passage (331) and an auxiliary oil passage (332), the main oil passage (331) extending axially through the drive shaft assembly (3), an inlet end of the main oil passage (331) being communicable with the oil supply device (10), an outlet end of the main oil passage (331) being communicable with the eccentric sleeve mounting chamber (5210);

An inlet end of the auxiliary oil duct (332) is communicated with the main oil duct (331), and an outlet end of the auxiliary oil duct (332) is communicated with at least one of the second installation cavity (601) and the third installation cavity (701).

7. The compressor according to claim 6, characterized in that the main oil passage (331) includes a first oil passage (331 a) and a second oil passage (331 b), the first oil passage (331 a) and the second oil passage (331 b) being arranged along an axial direction of the drive shaft assembly (3), an inlet end of the first oil passage (331 a) communicating with an oil outlet of the oil supply device (10);

The outlet end of the first oil duct (331 a) is communicated with the inlet end of the second oil duct (331 b), and the outlet end of the second oil duct (331 b) faces the eccentric shaft (32) and is communicated with the eccentric sleeve mounting cavity (5210);

The driving shaft assembly (3) further comprises a main shaft (31), the main shaft (31) and the eccentric shaft (32) are arranged along the axial direction of the driving shaft assembly (3), the main shaft (31) is connected with the eccentric shaft (32), and the second oil duct (331 b) is parallel to the axis of the main shaft (31).

8. The compressor according to claim 5, further comprising a driving device (2), the driving device (2) being connected to the driving shaft assembly (3), the oil return chamber (100) comprising a first oil return chamber (100 a) and a second oil return chamber (100 b), the first oil return chamber (100 a) being located between the first support seat (6) and the turbine assembly (5), the second oil return chamber (100 b) being located between the first support seat (6) and the driving device (2);

The first support seat (6) is provided with a second oil return channel (61), the inlet end of the second oil return channel (61) is communicated with the first oil return cavity (100 a), and the outlet end of the second oil return channel (61) is communicated with the second oil return cavity (100 b).

9. The compressor according to claim 8, further comprising a third oil return passage (101), one end of the third oil return passage (101) being in communication with the oil return chamber (100), the other end of the third oil return passage (101) being in communication with the oil reservoir chamber (13);

The driving device (2) comprises a stator (21) and a rotor (22), the rotor (22) is connected with the driving shaft assembly (3), and the third oil return channel (101) is positioned between the stator (21) and the shell (1).

10. The compressor according to claim 9, characterized in that it further comprises an oil-separating cover (14), said oil-separating cover (14) being located in said second oil return chamber (100 b), said oil-separating cover (14) being connected to at least one of said casing (1) and said first support seat (6);

A plane perpendicular to the axial direction of the eccentric shaft (32) is defined as a second projection plane, and the projection of the rotor (22) on the second projection plane falls into the projection range of the oil separation cover (14) on the second projection plane.