CN220890521U - Compressor and air conditioner - Google Patents

Abstract

The application relates to a compressor and an air conditioner, wherein the compressor comprises: a cylinder having an opening; the rotor is rotationally arranged in the cylinder; the composite bearing is provided with a movable hole extending along the axial direction of the rotor, the composite bearing is sleeved on the outer peripheral side of the rotor through the movable hole, and the opening of the cylinder body is sleeved on the outer peripheral side of the composite bearing; the impeller is connected to the axial end part of the rotor and is positioned outside the cylinder body; the first air film is formed between the outer end face of the composite bearing and the inner end face of the impeller, and the second air film is formed between the inner wall of the movable hole and the outer wall of the rotor. The technical scheme of the application effectively solves the technical problems of high mechanical loss and poor sealing performance of the traditional compressor.

Description

Compressor and air conditioner

Technical Field

The application relates to the technical field of intelligent household appliances, in particular to a compressor and an air conditioner.

Background

The compressor is an important component of a home appliance operated by a refrigeration cycle system such as an air conditioner, a refrigerator, and the like. In general, a compressor converts mechanical energy into pressure energy by using a part (rolling piston or reciprocating piston, etc.) of the compressor moving under the drive of a motor, so as to compress a refrigerant in a cylinder of a pump body of the compressor, and the compressed refrigerant is discharged out of the compressor to enter a refrigeration cycle system for circulating flow.

How to reduce the mechanical loss of the compressor, avoid the leakage of the compressor seal, and improve the efficiency of the compressor has become a major concern in the market. In the related art, a diffuser, a thrust disk, a gas bearing, and other members are generally provided in a compressor at the same time, so that a gas film is formed in the compressor by an external high-pressure gas, thereby improving the air tightness of the compressor. However, the rotor in the high-speed rotation state is easy to generate the phenomenon of vortex instability, the stability of the gas bearing is damaged, the gas bearing is abnormal in operation in the high-speed working state, the amplitude of the rotor is further increased, the gas bearing is further worn, and the mechanical loss of the compressor is increased.

Disclosure of utility model

The application provides a compressor and an air conditioner, which are used for solving the technical problems of high mechanical loss and poor sealing performance of the traditional compressor.

To this end, in a first aspect, an embodiment of the present application provides a compressor including:

A cylinder having an opening;

The rotor is rotationally arranged in the cylinder;

The composite bearing is provided with a movable hole extending along the axial direction of the rotor, the composite bearing is sleeved on the outer peripheral side of the rotor through the movable hole, and the opening of the cylinder body is sleeved on the outer peripheral side of the composite bearing; and

The impeller is connected to the axial end part of the rotor and is positioned outside the cylinder body;

The first air film is formed between the outer end face of the composite bearing and the inner end face of the impeller, and the second air film is formed between the inner wall of the movable hole and the outer wall of the rotor.

In one possible implementation, the composite bearing comprises a bearing housing, a bearing carrier and a bearing support, wherein the bearing support is sleeved on the bearing housing, the bearing carrier is sleeved on the bearing housing, the movable hole is formed in the bearing carrier, and the bearing support is inserted into the opening of the cylinder body.

In one possible embodiment, the composite bearing further comprises a seal disposed between the bearing housing and the bearing support.

In one possible embodiment, the side of the bearing housing facing the bearing support is provided with an air supply groove, which is arranged around the circumference of the bearing housing, and in which a first air inlet opening is provided through the bearing housing.

In one possible implementation manner, the bearing support is provided with a second air inlet, the cylinder is provided with a third air inlet, the second air inlet and the first air inlet are communicated to form a bearing air supply inlet, and the bearing air supply inlet is communicated with a refrigerant air pump of the compressor.

In one possible embodiment, the bearing housing comprises a first housing and a second housing arranged vertically, the first housing extending in the axial direction of the rotor, the second housing extending in the radial direction of the rotor, the maximum radial dimension of the second housing being greater than the maximum radial dimension of the first housing, the air supply channel and the first air inlet being arranged on the first housing; and/or the bearing carrier comprises a first supporting part and a second supporting part which are vertically arranged, wherein the first supporting part extends along the axial direction of the rotor, the second supporting part extends along the radial direction of the rotor, and the maximum radial dimension of the second supporting part is larger than that of the first supporting part.

In one possible embodiment, the cylinder is provided with a bearing exhaust port, the bearing exhaust port is communicated with the inner cavity of the compressor, the composite bearing further comprises an exhaust pipeline, one end of the exhaust pipeline is communicated with the bearing exhaust port, and the other end of the exhaust pipeline is communicated with the compressor evaporator or the compressor air suction port.

In one possible embodiment, the compressor further comprises a stator and a volute, the stator being disposed between the cartridge and the rotor, the volute being connected to the opening of the cartridge and to an end of at least part of the composite bearing, the impeller being disposed within the volute.

In one possible embodiment, the compressor further comprises a cooling assembly disposed between the cylinder and the stator.

In a second aspect, an embodiment of the present application further provides an air conditioner, including a compressor as set forth in any one of the above.

According to the compressor and the air conditioner provided by the embodiment of the application, the compressor comprises: a cylinder having an opening; the rotor is rotationally arranged in the cylinder; the composite bearing is provided with a movable hole extending along the axial direction of the rotor, the composite bearing is sleeved on the outer peripheral side of the rotor through the movable hole, and the opening of the cylinder body is sleeved on the outer peripheral side of the composite bearing; the impeller is connected to the axial end part of the rotor and is positioned outside the cylinder body; the first air film is formed between the outer end face of the composite bearing and the inner end face of the impeller, and the second air film is formed between the inner wall of the movable hole and the outer wall of the rotor. According to the technical scheme, the composite bearing is arranged in the compressor, and the axial opposition force to the compressed gas of the impeller is improved through the first gas film formed between the composite bearing and the impeller, so that the compressed gas is prevented from leaking into the inner cavity of the compressor; meanwhile, a second air film formed between the composite bearing and the rotor provides suspension support for the rotor so as to reduce the friction force between the rotor and the composite bearing, reduce the phenomenon of vortex instability of the rotor in high-level operation, improve the operation stability of the composite bearing and reduce the mechanical abrasion of the compressor; in addition, the first air film or the second air film has the function of high-pressure air seal, so that the overall sealing performance of the compressor is effectively improved. Specifically, the compressor is configured as a composite member including at least a cylinder for providing mechanical protection and working space to the rotor, a rotor, an impeller, and a composite bearing; the rotor is connected with the impeller to drive the impeller to rotate; the impeller is used for providing compressed gas; the composite bearing is arranged outside the inner rotor of the cylinder body and is used for providing a second air film for the rotor so as to support the rotor to suspend, reduce friction force between the rotor and the composite bearing in the rotating process of the rotor and reduce mechanical abrasion of the compressor; meanwhile, the composite bearing is arranged opposite to the impeller so as to provide a first air film for the impeller and prevent compressed air provided by the impeller from leaking into the inner cavity of the compressor to influence the performance of the compressor; in addition, the first air film and the second air film provided by the composite bearing are beneficial to improving the sealing performance of the compressor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort. One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

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

FIG. 2 is another cross-sectional view of a compressor according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a composite bearing according to an embodiment of the present application;

fig. 4 is another cross-sectional view of a composite bearing according to an embodiment of the present application.

Reference numerals illustrate:

100. a cylinder; 101. a third air inlet; 102. a bearing exhaust port;

200. a rotor; 300. an impeller;

400. A composite bearing; 401. a movable hole; 402. an annular connecting groove; 403. an air supply tank; 410. a bearing housing; 411. a first air inlet; 412. a first housing; 413. a second housing; 420. a bearing carrier; 421. a first support portion; 422. a second support portion; 430. a bearing support; 431. a second air inlet; 440. an exhaust duct;

500. A stator; 600. a volute;

710. A spiral coolant channel; 720. a cooling inlet; 730. and cooling the outlet.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present 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.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

Referring to fig. 1 to 4, an embodiment of the present application provides a compressor including: barrel 100, rotor 200, impeller 300 and composite bearing 400.

A cylinder 100 having an opening;

a rotor 200 rotatably provided in the cylinder 100;

A composite bearing 400 having a movable hole 401 extending in the axial direction of the rotor 200, the composite bearing 400 being fitted over the outer peripheral side of the rotor 200 through the movable hole 401, the opening of the cylinder 100 being fitted over the outer peripheral side of the composite bearing 400; and

An impeller 300 connected to an axial end of the rotor 200 and located outside the cylinder 100;

wherein, a first air film is formed between the outer end surface of the composite bearing 400 and the inner end surface of the impeller 300, and a second air film is formed between the inner wall of the movable hole 401 and the outer wall of the rotor 200.

In the embodiment, the composite bearing 400 is arranged in the compressor, and the axial opposition force to the compressed gas of the impeller 300 is improved through the first gas film between the composite bearing 400 and the impeller 300, so that the compressed gas is prevented from leaking into the inner cavity of the compressor; meanwhile, the second air film between the composite bearing 400 and the rotor 200 provides suspension support for the rotor 200, so that friction force between the rotor 200 and the composite bearing 400 is reduced, vortex instability phenomenon of the rotor 200 in high-level operation is reduced, operation stability of the composite bearing 400 is improved, and mechanical abrasion of the compressor is reduced. In addition, the first air film or the second air film has the function of high-pressure air seal, so that the overall sealing performance of the compressor is effectively improved.

Specifically, the compressor is configured as a combined member including at least a cylinder 100, a rotor 200, an impeller 300, and a composite bearing 400, the cylinder 100 being used to provide mechanical protection and working space for the rotor 200; the rotor 200 can rotate around the shaft of the cylinder 100, and the end part of the rotor 200 is connected with the impeller 300 to drive the impeller 300 to rotate synchronously; the impeller 300 is coaxially disposed with the rotor 200 and coaxially rotates with the rotor 200, and generates compressed gas during rotation; the composite bearing 400 is arranged outside the rotor 200 in the cylinder 100, and when the compressor works, a second air film is formed in the space between the outer wall surface of the rotor 200 and the inner wall surface of the movable hole 401, and can support the rotor 200 to suspend, so that the friction force between the rotor 200 and the composite bearing 400 in the rotation process is reduced, and the mechanical abrasion of the compressor is reduced; meanwhile, the composite bearing 400 is also arranged opposite to the impeller 300, and when the compressor works, a first air film is formed in a space between the outer end surface of the composite bearing 400 and the inner end surface of the impeller 300, the first air film provides high pressure for the impeller 300, and compressed gas in the impeller 300 is prevented from leaking into the inner cavity of the compressor through a gap between the impeller 300 and the composite bearing 400 and a gap between the composite bearing 400 and the rotor 200, so that the performance of the compressor is affected. In addition, the first and second gas films provided by the composite bearing 400 also facilitate improving the sealing performance of the compressor.

In one example, the thickness of the first air film is approximately 0.02mm to 0.06mm. The thickness of the second air film is approximately 0.02mm to 0.06mm. If the thickness of the gas film is too small, the air tightness provided for the compressor is low, and the sealing effect is poor; the excessive thickness of the air film requires a large amount of external air source, which causes energy waste. It should be appreciated that the general shape of the first air film is a pie or doughnut shape with a via, and the general shape of the second air film is a cylinder with a via.

In one example, both ends of the cylinder 100 have openings. At this time, both ends of the rotor 200 slightly protrude from both openings of the cylinder 100, the impeller 300 is provided with two sets, the composite bearing 400 is provided with two sets, and one impeller 300 and one composite bearing 400 are correspondingly arranged on one end of the rotor 200 and the opening of the cylinder 100. By arranging the impellers 300 and the composite bearings 400 at both ends of the cylinder 100, on one hand, compressed gas is supplied to the compressor through the two impellers 300, so that the working efficiency of the compressor is improved; on the other hand, the inner end surface of the impeller 300 acts as a thrust disk, which provides a certain axial thrust for the rotor 200, and the two opposite impellers 300 can effectively balance and eliminate/weaken the axial thrust of the impeller 300 to the rotor 200, prevent the rotor 200 from axially moving, improve the axial operation stability of the rotor 200 and reduce the axial mechanical abrasion of the rotor 200; in addition, the two composite bearings 400 respectively act on the two ends of the rotor 200 and provide radial suspension supporting force for the two ends of the rotor 200, so that the radial stress of the rotor 200 is more uniform, the radial operation stability of the rotor 200 is improved, and the radial mechanical wear of the rotor 200 is reduced.

Referring to fig. 1 to 4, in one possible embodiment, the composite bearing 400 includes a bearing housing 410, a bearing carrier 420, and a bearing support 430, the bearing support 430 is sleeved on the bearing housing 410, the bearing housing 410 is sleeved on the bearing carrier 420, the movable hole 401 is provided on the bearing carrier 420, and the bearing support 430 is inserted into an opening of the cylinder 100.

In this embodiment, the specific configuration of the composite bearing 400 is optimized. Specifically, the composite bearing 400 is configured as a combined member including at least the bearing housing 410, the bearing carrier 420, and the bearing mount 430, the bearing mount 430 being configured on the cylinder 100 to provide a rigid supporting force to the bearing housing 410 and the bearing carrier 420; the bearing housing 410 is disposed outside the bearing carrier 420, and serves to protect the bearing carrier 420 and provide strength to the bearing carrier 420; the bearing carrier 420 is made of a porous material and is used on the bearing surface to form a uniform lubricating film between the rotor 200 and the composite bearing 400. For example, but not limited to, the bearing carrier 420 may be a porous graphite carrier or a carrier made of a porous sintered bronze material.

The throttling technology adopted by the current common static pressure gas bearing comprises a single-small Kong Jie flow type, a multi-small Kong Jie flow type, a micro-groove throttling type, a micro-pore throttling type and a porous material throttling type, wherein the porous static pressure gas bearing adopts a novel porous material as a bearing surface to obtain a lubricating film with good consistency. The porous material is internally distributed with a large number of tiny air supply holes, and an external air source enters the bearing surface through the porous material to form a pressure air film for supporting load.

In one example, an assembly gap of 0.2mm to 0.3mm is allowed between bearing support 430 and bearing housing 410. The bearing carrier 420 may be glued or welded to the bearing housing 410.

In one possible embodiment, composite bearing 400 further includes a seal (not shown) disposed between bearing housing 410 and bearing mount 430.

In this embodiment, the specific configuration of the composite bearing 400 is further optimized. Specifically, the composite bearing 400 is configured as a combined member including at least the bearing housing 410, the bearing carrier 420, the bearing mount 430, and a seal disposed between the bearing housing 410 and the bearing mount 430 to prevent gas from overflowing or entering from a gap between the bearing housing 410 and the bearing mount 430, thereby improving the sealing performance of the compressor.

In one example, an annular attachment groove 402 is disposed on the outside of the bearing housing 410 and the seal is an O-ring. At least a part of the O-ring is accommodated in the annular connecting groove 402 of the bearing housing 410, and the other part abuts against the inner wall of the bearing support 430, so that the sealing connection between the bearing support 430 and the bearing housing 410 is realized through the extrusion deformation of the O-ring. In addition, the O-ring provides damping to bearing housing 410, preventing rotation and play between bearing housing 410 and bearing mount 430.

For example, but not limited to, the annular attachment groove 402 is provided in plurality and the O-ring is provided in plurality. A plurality of annular coupling grooves 402 are arranged at intervals in the axial direction of the bearing housing 410, and one O-ring is provided corresponding to one annular coupling groove 402.

Referring to fig. 1 to 4, in one possible embodiment, a side of the bearing housing 410 facing the bearing mount 430 is provided with an air supply groove 403, the air supply groove 403 is provided around the circumference of the bearing housing 410, and a first air inlet 411 penetrating the bearing housing 410 is provided in the air supply groove 403.

In this embodiment, the specific configuration of the bearing housing 410 is optimized. Specifically, an air supply groove 403 and a first air intake 411 are arranged on the bearing housing 410, the air supply groove 403 having an annular structure, being arranged in the circumferential direction of the bearing housing 410; the first gas inlet 411 penetrates through the sidewall of the bearing housing 410 and communicates the gas supply groove 403 and the bearing carrier 420, so that gas outside the bearing housing 410 can be introduced into the bearing carrier 420 through the gas supply groove 403 and introduced into the gap of the second distance between the composite bearing 400 and the rotor 200 through the aperture in the bearing carrier 420 to form a second gas film.

In one example, in order to provide a sufficient air film air supply amount to the compressor, a plurality of air supply grooves 403 are provided on the bearing housing 410, and at least one first air inlet 411 is provided corresponding to each air supply groove 403. The plurality of air supply grooves 403 are arranged at intervals in the axial direction of the bearing housing 410, and the plurality of first air inlets 411 arranged on one air supply groove 403 are arranged at intervals in the circumferential direction of the bearing housing 410.

In one possible embodiment, the bearing support 430 is provided with a second air inlet 431, the cylinder 100 is provided with a third air inlet 101, and the third air inlet 101, the second air inlet 431 and the first air inlet 411 are communicated to form a bearing air supply inlet, and the bearing air supply inlet is communicated with a refrigerant air pump of the compressor.

In this embodiment, the specific configuration of bearing support 430 and barrel 100 is optimized. Specifically, the second air inlet 431 is disposed at a position corresponding to the first air inlet 411 on the bearing support 430, and the third air inlet 101 is disposed at a position corresponding to the second air inlet 431 on the cylinder 100, so that the third air inlet 101, the second air inlet 431, the air supply slot 403 and the first air inlet 411 are communicated to form a bearing air supply inlet, and air supply operation for the first air film and the second air film is realized.

Referring to fig. 4, in one possible embodiment, the bearing housing 410 includes a first housing 412 and a second housing 413 vertically disposed, the first housing 412 extending in an axial direction of the rotor 200, the second housing 413 extending in a radial direction of the rotor 200, a maximum radial dimension of the second housing 413 being greater than a maximum radial dimension of the first housing 412, and the air supply slot 403 and the first air inlet 411 being disposed on the first housing 412; and/or

The bearing carrier 420 includes a first supporting portion 421 and a second supporting portion 422 vertically disposed, the first supporting portion 421 extending in an axial direction of the rotor 200, the second supporting portion 422 extending in a radial direction of the rotor 200, a maximum radial dimension of the second supporting portion 422 being greater than a maximum radial dimension of the first supporting portion 421.

In this embodiment, the specific configuration of the bearing housing 410 and the bearing carrier 420 is optimized. Specifically, the bearing housing 410 is configured as a combined member including at least a first housing 412 and a second housing 413, through holes for avoiding the rotor 200 are provided on each of the first housing 412 and the second housing 413, the through holes on the first housing 412 are communicated with the through holes on the second housing 413, and the second housing 413 is arranged at an end of the first housing 412, the second housing 413 extends outward in a radial direction of the first housing 412 to form a radial end surface, and the radial end surface is disposed opposite to the impeller 300, so that air supply to a first distance gap between an outer end surface of the second housing 413 and the impeller 300 is realized through an external air source, the third air inlet 101, the second air inlet 431, the air supply groove 403 (the second housing 413), the first air inlet 411 (the second housing 413), and the aperture in the bearing carrier 420 to form a first air film; and, air supply to the second distance gap between the inner wall surface of the first housing 412 and the outer wall surface of the rotor 200 is achieved to form a second air film.

Specifically, the bearing carrier 420 is configured as a combined member including at least a first support portion 421 and a second support portion 422, through holes for avoiding the rotor 200 are provided in each of the first support portion 421 and the second support portion 422, the through holes in the first support portion 421 communicate with the through holes in the second support portion 422, and the second support portion 422 is disposed at an end portion of the first support portion 421, the second support portion 422 extends outward in a radial direction of the first support portion 421 to form a radial end surface, which is disposed opposite to the impeller 300, so that air supply to a first distance gap between an outer end surface of the second support portion 422 and the impeller 300 is achieved through an external air source, the third air inlet 101, the second air inlet 431, the air supply groove 403 (the second housing 413), the first air inlet 411 (the second housing 413), the aperture in the first support portion 421, and the aperture in the second support portion 422 to form a first air film; and, air supply to the second distance gap between the inner wall surface of the first support portion 421 and the outer wall surface of the rotor 200 is achieved through the external air source, the third air inlet 101, the second air inlet 431, the air supply groove 403 (second housing 413), the first air inlet 411 (second housing 413), and the aperture in the first support portion 421, to form a second air film.

Referring to fig. 1 and 2, in one possible embodiment, the cylinder 100 is provided with a bearing exhaust port 102, the bearing exhaust port 102 is communicated with the inner cavity of the compressor, and the composite bearing 400 further comprises an exhaust pipe 440, one end of the exhaust pipe 440 is communicated with the bearing exhaust port 102, and the other end is communicated with the evaporator or the air suction port of the compressor.

In this embodiment, the specific configuration of the cartridge 100 and the composite bearing 400 is optimized. Specifically, the composite bearing 400 is configured to at least comprise a combined component of a bearing housing 410, a bearing carrier 420, a bearing support 430 and an exhaust pipeline 440, meanwhile, a bearing exhaust port 102 is arranged on the cylinder 100, the bearing exhaust port 102 is communicated with a compressor cavity, the exhaust pipeline 440 is communicated with the bearing exhaust port 102 and a compressor evaporator or a compressor air suction port, so that the exhaust and air pressure adjustment of the compressor cavity are realized, and static pressure air supply is prevented from being continuously gathered in the compressor cavity to continuously increase the pressure in the cylinder 100, and the bearing effect of the composite bearing 400 is affected. In addition, the exhaust pipe 440 is connected to the inlet position of the compressor scroll 600, and also supplements the scroll 600 to some extent.

Referring to fig. 1 and 2, in one possible embodiment, the compressor further includes a stator 500 and a scroll 600, the stator 500 is disposed between the cylinder 100 and the rotor 200, the scroll 600 is connected to an opening of the cylinder 100 and an end of at least part of the composite bearing 400, and the impeller 300 is disposed within the scroll 600.

In this embodiment, the specific configuration of the compressor is further optimized. Specifically, the compressor is configured as a combined member including at least a cylinder 100, a rotor 200, an impeller 300, a composite bearing 400, a stator 500, and a scroll 600, wherein an outer wall surface of the stator 500 is connected to an inner wall surface of the cylinder 100, a through hole is provided in the stator 500, the stator 500 is fitted over the rotor 200 through the through hole, and the rotor 200 is rotatable in the stator 500. The scroll 600 is disposed at an end of the compressor, and provides a stable working space for the impeller 300.

Referring to fig. 1 and 2, in one possible embodiment, the compressor further includes a cooling assembly disposed between the cylinder 100 and the stator 500.

In this embodiment, the specific configuration of the compressor is further optimized. Specifically, the compressor is configured as a combined member including at least the cylinder 100, the rotor 200, the impeller 300, the composite bearing 400, the stator 500, the scroll 600, and a cooling assembly for cooling the stator 500.

In one example, a spiral half-groove channel is provided at a position of the inner wall surface of the cylinder 100 corresponding to the stator 500, and the spiral half-groove channel and the outer wall surface of the stator 500 are enclosed to form a spiral cooling liquid channel 710. Meanwhile, a cooling inlet 720 and a cooling outlet 730 are arranged on the barrel 100 corresponding to the stator 500, one ends of the cooling inlet 720 and the cooling outlet 730 are communicated with the spiral cooling liquid channel 710, and the other ends are communicated with the cold source, so that cooling liquid can be distributed on the periphery of the stator 500 through the rotating cooling liquid channel arranged between the barrel 100 and the stator 500, and heat generated by the stator 500 is taken away.

In a second aspect, an embodiment of the present application further provides an air conditioner, including a compressor as set forth in any one of the above. The specific structure of the compressor refers to the above embodiments, and because the air conditioner adopts all the technical solutions of all the embodiments, the air conditioner has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A compressor, comprising:

A cylinder having an opening;

The rotor is rotationally arranged in the cylinder;

The composite bearing is provided with a movable hole extending along the axial direction of the rotor, the composite bearing is sleeved on the outer peripheral side of the rotor through the movable hole, and the opening of the cylinder body is sleeved on the outer peripheral side of the composite bearing; and

The impeller is connected to the axial end part of the rotor and is positioned outside the cylinder body;

A first air film is formed between the outer end surface of the composite bearing and the inner end surface of the impeller, and a second air film is formed between the inner wall of the movable hole and the outer wall of the rotor;

The composite bearing comprises a bearing shell, a bearing carrier and a bearing support, wherein the bearing support is sleeved on the bearing shell, the bearing shell is sleeved on the bearing carrier, the movable hole is formed in the bearing carrier, and the bearing support is inserted into the opening of the cylinder body.

2. The compressor of claim 1, wherein the composite bearing further comprises a seal disposed between the bearing housing and the bearing support.

3. The compressor of claim 2, wherein an air supply groove is provided at a side of the bearing housing facing the bearing support, the air supply groove is annularly provided in a circumferential direction of the bearing housing, and a first air inlet penetrating the bearing housing is provided in the air supply groove.

4. A compressor according to claim 3, wherein the bearing support is provided with a second air inlet, the cylinder is provided with a third air inlet, the second air inlet and the first air inlet are communicated to form a bearing air supply inlet, and the bearing air supply inlet is communicated with a refrigerant air pump of the compressor.

5. The compressor of claim 3 or 4, wherein the bearing housing includes a first housing and a second housing disposed vertically, the first housing extending in an axial direction of the rotor, the second housing extending in a radial direction of the rotor, a maximum radial dimension of the second housing being greater than a maximum radial dimension of the first housing, the air supply groove and the first air inlet being disposed on the first housing; and/or

The bearing carrier comprises a first supporting portion and a second supporting portion which are vertically arranged, wherein the first supporting portion extends along the axial direction of the rotor, the second supporting portion extends along the radial direction of the rotor, and the maximum radial dimension of the second supporting portion is larger than that of the first supporting portion.

6. The compressor of claim 1, wherein the cylinder is provided with a bearing exhaust port, the bearing exhaust port is communicated with the inner cavity of the compressor, the composite bearing further comprises an exhaust pipeline, one end of the exhaust pipeline is communicated with the bearing exhaust port, and the other end of the exhaust pipeline is communicated with the compressor evaporator or the compressor air suction port.

7. The compressor of claim 1, further comprising a stator disposed between the barrel and the rotor and a volute connected to an opening of the barrel and to an end of at least a portion of the composite bearing, the impeller being disposed within the volute.

8. The compressor of claim 7, further comprising a cooling assembly disposed between the cylinder and the stator.

9. An air conditioner comprising the compressor according to any one of claims 1 to 8.