CN112943616B

CN112943616B - Compressor and air conditioner with same

Info

Publication number: CN112943616B
Application number: CN202110189712.2A
Authority: CN
Inventors: 孙晓梅; 吴健; 王珺; 刘喜兴; 朱鹏鹏
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2022-10-28
Anticipated expiration: 2041-02-19
Also published as: CN112943616A

Abstract

The invention provides a compressor and an air conditioner with the same. The compressor includes a crankshaft having a long shaft section; the thrust part is arranged along the axial direction of the long shaft section; the bearing neck of the upper flange is provided with an accommodating cavity, and at least part of the thrust part is positioned in the accommodating cavity and is abutted against the wall surface of the accommodating cavity. The thrust part is assembled on a long shaft of the crankshaft, and the outer surface of the thrust part positioned in the accommodating cavity forms the thrust surface to realize the support of the crankshaft. The compressor thrust part avoids abrasion between the lower thrust surface of the crankshaft and the lower flange, improves the stability of the crankshaft during the operation of the compressor, and further increases the reliability during the operation of the rotor compressor.

Description

Compressor and air conditioner with same

Technical Field

The invention relates to the technical field of compressor equipment, in particular to a compressor and an air conditioner with the same.

Background

The rotor compressor comprises a power device with a driving function and a compression device for lifting a refrigerant into high-pressure gas, and the two parts are connected by means of interference fit between a crankshaft and a motor rotor to transmit mechanical energy. Through the rotation of the motor rotor, the crankshaft drives the roller in the cylinder to rotate, and the work of the rotor compressor is realized by matching with the sliding sheet. The crankshaft of the rotor compressor is matched with the end face of the lower flange bearing through the lower thrust face of the eccentric part of the crankshaft, and axial constraint of the crankshaft is achieved. In actual operation, the crankshaft is a moving part, the flange bearing forming the working cavity of the compressor is a static part, friction is generated between the crankshaft and the flange bearing, so that the surface of the bearing is seriously abraded, and then, part scraps are generated, so that the positioning precision of the crankshaft is reduced, and the mechanical power consumption of the compressor is increased. Meanwhile, the crankshaft is subjected to the action of self weight to extrude the end face of the bearing, and lubricating oil between contact surfaces is less, so that an oil film is not easy to form, further unsmooth lubrication is caused, friction is generated, and mechanical loss during working is increased; in addition, when the compressor runs under high load, a large amount of heat generated in the working cavity is not easy to dissipate, the rigidity of the bearing is reduced, the running of working parts is influenced, and the running stability of the compressor is reduced.

In order to solve the technical problems in the prior art, in the rotor compressor disclosed in the prior art, the annular insert is sleeved on the crankshaft and is located in the accommodating hole of the rotor core, the end face of the upper cylinder cover close to one end of the annular insert is in contact with the end face of one end of the planar rolling bearing, the annular insert is extruded by the rotor inside the rotor compressor and the dead weight of the crankshaft to drive the planar rolling bearing to rotate, so that the sliding friction between the lower thrust surface of the crankshaft and the upper cylinder surface is changed into rolling friction, and the mechanical loss is reduced. In the prior art, a thrust surface of a crankshaft is arranged on the end surface of the top of an upper cylinder cover and is in contact with a press-in ring of a motor rotor, the area of the thrust surface can be properly increased, the reliability of the thrust surface is improved, and a gasket can be additionally arranged between two metal contact surfaces in order to further improve the reliability of the thrust surface and reduce friction loss. Meanwhile, the thrust surface structure can increase the rigidity of the crankshaft and limit the deflection of the rotor end of the motor.

In the technical scheme adopted by the prior art, the thrust assembly is required to be assembled at the lower end of the rotor, the machining and assembling requirements of the rotor are met, the machining cost and the machining difficulty of the compressor are improved, the lubricating effect of the thrust surface of the thrust part in the prior art is poor, the bearing abrasion is easily caused, and the service life of the compressor is shortened.

Disclosure of Invention

The invention mainly aims to provide a compressor and an air conditioner with the same, and aims to solve the problem that a thrust surface of a crankshaft is easy to wear in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a compressor including: a crankshaft having a long shaft section; the thrust part is arranged along the axial direction of the long shaft section; go up the flange, the bearing neck of going up the flange is provided with and holds the chamber, and at least partial thrust portion is located and holds the intracavity and set up with the chamber wall face butt that holds the chamber.

Furthermore, the end part of the bearing neck of the upper flange is provided with an accommodating cavity, and the thrust part is positioned in the accommodating cavity.

Further, the thrust part is of an annular structure, and the outer peripheral surface of the thrust part is arranged in contact with the inner peripheral surface of the accommodating cavity.

Furthermore, the thrust part is fixedly connected with the long shaft section, and the crankshaft drives the thrust part to be rotationally arranged relative to the upper flange.

Further, the inner peripheral surface of the thrust part is provided with an internal thread, and the outer peripheral surface of the long shaft section is provided with an external thread matched with the internal thread.

Furthermore, the outer peripheral surface of the thrust part is of a first conical surface structure, and the inner peripheral surface of the accommodating cavity is of a second conical surface structure matched with the first conical surface structure.

Furthermore, the difference between the inner circle radius of the large-diameter end of the second conical surface structure and the inner circle radius of the small-diameter end of the second conical surface structure is L1, the wall thickness of the neck of the bearing is L0, and L1 is less than or equal to 0.5L0.

Furthermore, the height from the large-diameter end of the second conical surface structure to the small-diameter end of the second conical surface structure is h1, the distance from the end part of the bearing neck part to the upper end face of the flange chassis is h, and h1 is not more than h/3.

Further, at least one of the thrust part and the accommodating cavity is provided with an oil guide structure.

Further, the outer peripheral face of thrust portion is provided with leads oily structure, leads oily structure and includes the first oil groove of leading.

Further, first oil groove of leading is a plurality of, and a plurality of first oil grooves of leading set up at interval, and at least one is the spiral oil groove of leading in a plurality of first oil grooves of leading.

Further, lead oily structure and include the stator, the stator is a plurality of, and a plurality of stator extend the setting along the outer peripheral face of thrust portion, the surface of stator and the inner peripheral surface butt of holding the chamber.

Further, be provided with on the inner peripheral surface that holds the chamber and lead oily structure, lead oily structure and lead the oil groove for the second, the oil groove is led to the second is a plurality of, and a plurality of seconds are led the oil groove and are set up along holding the circumference interval of chamber.

Furthermore, the number of the oil guide structures is N, wherein N is more than or equal to 3 and less than or equal to 8.

Further, the thrust portion is made of wear-resistant ceramic.

Further, the crankshaft is provided with an eccentric part, one side of the eccentric part, which is far away from the upper flange, forms a lower thrust surface, the compressor further comprises a lower flange, the lower flange is arranged opposite to the upper flange, the eccentric part is positioned between the upper flange and the lower flange, and the lower thrust surface and the lower flange are arranged with a distance.

Further, along the axial direction of the thrust part, the included angle a between the connecting line of the first end of the thrust part and the outer surface of the second end of the thrust part and the axial line of the crankshaft is greater than or equal to 30 degrees and less than or equal to 50 degrees.

According to another aspect of the present invention, there is provided an air conditioner comprising a compressor, the compressor being the above-mentioned compressor.

By applying the technical scheme of the invention, the thrust part is arranged between the long shaft section of the crankshaft and the bearing neck of the upper flange, and has the function of preventing the rotating shaft from moving towards one side of the flange, so that the problems of bearing end surface abrasion and mechanical loss caused by the contact of the lower thrust surface of the eccentric part of the crankshaft and the bearing of the lower flange of the rotor compressor are solved. The compressor thrust part avoids abrasion between the lower thrust surface of the crankshaft and the lower flange, improves the stability of the crankshaft during the operation of the compressor, and further increases the reliability during the operation of the rotor compressor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a compressor according to the present invention;

FIG. 2 shows an exploded view of an embodiment of an upper flange and thrust block in accordance with the present invention;

FIG. 3 shows a schematic construction of a first embodiment of a crankshaft according to the present invention;

FIG. 4 shows a schematic construction of a second embodiment of a crankshaft according to the present invention;

fig. 5 shows a schematic structural view of a first embodiment of a thrust part according to the invention;

fig. 6 shows a schematic structural view of a second embodiment of a thrust part according to the invention;

fig. 7 shows a schematic structural view of a third embodiment of a thrust part according to the invention;

FIG. 8 shows a cross-sectional structural schematic of a fourth embodiment of a thrust block in accordance with the present invention;

FIG. 9 shows a schematic structural view of a first embodiment of an upper flange according to the present invention;

fig. 10 shows a schematic structural view of a second embodiment of an upper flange according to the present invention.

Wherein the figures include the following reference numerals:

1. a crankshaft;

2. a thrust part; 21. a first oil guide groove; 22. a guide vane;

3. an upper flange; 31. an accommodating chamber; 32. a second oil guide groove;

4. sliding blades;

5. a flange bearing;

6. a cylinder;

7. a roller; 8. a rotor of the motor.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 10, according to a specific embodiment of the present application, there is provided a compressor.

Specifically, the compressor includes a crankshaft 1, a thrust part 2, and an upper flange 3. The crankshaft 1 has a long shaft section. The thrust part 2 is arranged in the axial direction of the long shaft section. The bearing neck of the upper flange 3 is provided with an accommodating cavity 31, and at least part of the thrust part 2 is positioned in the accommodating cavity 31 and is abutted against the cavity wall surface of the accommodating cavity 31.

In this embodiment, through set up thrust unit between the long shaft section of bent axle and the bearing neck of upper flange 3, thrust unit has the effect that prevents the pivot and move towards flange one side, the setting has improved the rotor compressor like this and has caused the problem of bearing end face wearing and tearing and the mechanical loss that brings along thereupon because of thrust surface and lower flange bearing contact under the bent axle eccentric portion, this thrust unit assembly is on the bent axle major axis, the surface that is located the thrust unit of holding intracavity forms thrust surface, realize the support to the bent axle, when the bent axle moves, bent axle eccentric portion lower extreme thrust surface need not to contact with lower flange end face, reduce the inside wearing and tearing of working chamber and heat. The compressor thrust part avoids abrasion between the lower thrust surface of the crankshaft and the lower flange, improves the stability of the crankshaft during the operation of the compressor, and further increases the reliability during the operation of the compressor.

As shown in fig. 2, an accommodating chamber 31 is opened at an end of the bearing neck of the upper flange 3, and the thrust part 2 is located in the accommodating chamber 31. This arrangement can increase the contact area between the thrust portion 2 and the bearing neck portion, and can reduce the space occupied by the thrust portion 2 in the axial direction.

The thrust portion 2 has an annular structure, and an outer peripheral surface of the thrust portion 2 is disposed in contact with an inner peripheral surface of the accommodating chamber 31. This arrangement can improve the stability of the thrust portion 2 mounted in the housing chamber 31.

In order to further improve the connection reliability of the thrust part 2 and the crankshaft 1, the thrust part 2 is fixedly connected with the long shaft section, and the crankshaft 1 drives the thrust part 2 to rotate relative to the upper flange 3.

Further, an inner circumferential surface of the thrust part 2 is provided with an internal thread, and an outer circumferential surface of the long shaft section is provided with an external thread that fits the internal thread.

The outer peripheral surface of the thrust part 2 is a first conical surface structure, and the inner peripheral surface of the accommodating cavity 31 is a second conical surface structure matched with the first conical surface structure. That is, the thrust portion 2 and the inner peripheral surface of the housing chamber 31 are in contact with each other by the inclined surface, so that the force of the crankshaft can be dispersed, and the reliability of the crankshaft can be effectively improved. Wherein, the included angle between the connecting line of the first end of the thrust part 2 and the outer surface of the second end of the thrust part 2 and the axis of the crankshaft 1 is a, and a is more than or equal to 30 degrees and less than or equal to 50 degrees. This arrangement can further improve the reliability of the compressor.

As shown in fig. 10, the difference between the inner circle radius of the large diameter end of the second conical surface structure and the inner circle radius of the small diameter end of the second conical surface structure is L1, the wall thickness of the neck portion of the bearing is L0, wherein L1 is not more than 0.5l0. The height from the large-diameter end of the second conical surface structure to the small-diameter end of the second conical surface structure is h1, the distance from the end part of the bearing neck part to the upper end face of the base plate of the upper flange 3 is h, and h1 is not more than h/3. This arrangement can improve the strength of the upper flange 3.

In order to reduce the frictional damage between the thrust part 2 and the upper flange 3, at least one of the thrust part 2 and the housing chamber 31 is provided with an oil guide structure.

As shown in fig. 5, the outer circumferential surface of the thrust part 2 is provided with an oil guide structure including a first oil guide groove 21. First oil groove 21 of leading is a plurality of, and a plurality of first oil grooves 21 of leading set up at intervals, and a plurality of first oil grooves 21 of leading in at least one be the spiral oil groove of leading. This arrangement enables the lubricating oil to flow along the first oil guide groove 21 to lubricate the upper flange 3 and the thrust portion 2.

As shown in fig. 6 and 7, the oil guide structure includes a guide vane 22. A plurality of guide vanes 22 are provided, and the plurality of guide vanes 22 extend along the outer peripheral surface of the thrust portion 2, and the outer surface of the guide vane 22 abuts against the inner peripheral surface of the housing chamber 31. This arrangement allows oil passages to be formed between the vanes 22, which also serve to lubricate the upper flange 3 and the thrust portion 2.

In another embodiment of the present application, an oil guiding structure may also be provided on the inner circumferential surface of the receiving cavity 31. As shown in fig. 9, the oil guide structure is a second oil guide groove 32, the second oil guide grooves 32 are multiple, and the multiple second oil guide grooves 32 are arranged at intervals along the circumferential direction of the accommodating cavity 31.

In the present application, the number of the first oil guide groove 21, the guide vane 22, or the second oil guide groove 32 may be set to 3 to 8. In order to further increase the service life of the thrust part 2, the thrust part 2 is made of wear-resistant ceramic.

In this application, crankshaft 1 has the eccentric portion, and eccentric portion keeps away from 3 one sides of upper flange and forms lower thrust surface, and the compressor still includes lower flange, and lower flange sets up with upper flange 3 relatively, and eccentric portion is located between upper flange 3 and the lower flange, and lower thrust surface sets up with lower flange has distance. The arrangement can reduce the contact force between the end part of the crankshaft 1 and the lower flange, and simultaneously avoid the crankshaft from generating heat deformation due to friction generated by contact between the crankshaft 1 and the lower flange, thereby effectively improving the reliability of the crankshaft. The problem of among the prior art because of bent axle dead weight effect, the thrust surface is in close contact with between the flange bearing under the bent axle eccentric part, and the lubricated condition between the two is comparatively abominable, leads to wearing and tearing easily between the thrust surface, and the compressor reliability is lower is solved.

The compressor in the above embodiment may also be used in the technical field of air conditioning equipment, that is, according to another aspect of the present invention, there is provided an air conditioner, including a compressor, where the compressor is the compressor in the above embodiment.

Specifically, the problem that in the prior art, because of the fact that the axial restraint of the rotor compressor crankshaft depends on the contact of the lower thrust surface of the crankshaft and the end surface of the lower flange bearing, the crankshaft and the lower flange bearing move relatively in the operation process of the compressor, friction is generated, and mechanical efficiency is reduced is solved. The problem of among the prior art because of bent axle and lower flange bearing looks mutual friction produce a large amount of heats, can't radiate in the working chamber is solved. The problem of because of bent axle and last flange bearing assembly time, the axis is difficult to correspond, assembly accuracy is bad is solved.

The application provides a compressor is including setting up the pump body subassembly in the casing, including a motor, an end cap, a controller, and a cover plate, the long axis section of bent axle is equipped with thrust portion through screw-thread fit, the bent axle is installed in the hole of upper flange bearing neck upper end as an overall structure with thrust portion, support the bent axle dead weight, realize the axial restraint of bent axle, under the effect of motor rotor, the bent axle takes place rotatoryly, bent axle self gravity acts on the toper thrust surface, it receives the component force of two directions of axial force and radial force to go up flange bearing inner wall, under the effect of holding power, the bent axle all has corresponding restraint in the axial and footpath, when the compressor moves, realize the stable rotatory operation of bent axle. Meanwhile, the outer circumferential surface of the thrust part is provided with a spiral groove, and in the rotating process, lubricating oil improves the lubricating effect of the thrust surface through the groove.

Specifically, the compressor comprises a motor rotor 8 providing mechanical energy, a crankshaft 1 driving a roller to rotate, a cylinder 6 providing a compression working chamber, an upper flange 3 and a lower flange 5 sealing the working chamber, a roller 7, a sliding vane 4 and a thrust part 2, wherein the thrust part 2 is assembled on the crankshaft 1 and is matched with the upper flange 3 to restrain the axial displacement of the crankshaft 1. The crankshaft 1 has an outer circumferential surface S4 with a spiral structure on the long axis, and the axis of the thrust part 2 is collinear with the axis of the long axis of the crankshaft 1. The thrust portion 2 has an inner circumferential surface S3 that engages with an outer circumferential surface S4 on the long axis of the crankshaft 1. The inner circumferential surface S3 of the thrust part 2 is in threaded fit with the outer circumferential surface S4 on the long shaft of the crankshaft 1, so that the thrust part 2 is assembled on the crankshaft 1, and the thrust part 2 and the crankshaft 1 are of an integral structure. As shown in fig. 8, the thrust portion 2 has an outer circumferential surface S2 having a thrust effect. The upper flange 3 has an inner circumferential surface S1 fitted with an outer circumferential surface S2 of the thrust portion 2 in an inner hole at the upper end of the bearing neck portion. The thrust portion 2 has its own weight with the crankshaft 1, and presses the upper flange 3 so that the outer circumferential surface S2 of the thrust portion 2 contacts the inner circumferential surface S1 of the upper flange 3, forming a contact surface therebetween. The joint surface of the outer circumference surface S2 of the thrust part 2 and the inner circumference S1 of the upper flange 3 is an inclined curved surface with a certain angle with the axis. The outer circumferential surface of the thrust portion 2 is provided with a spiral groove.

When the compressor works, the outer circumferential surface S4 of the long shaft of the crankshaft 1 is in threaded fit with the inner circumferential surface S3 of the thrust part 2, the crankshaft 1 and the thrust part 2 are combined into an integral structure, under the action of the self gravity of the crankshaft 1 and the thrust part 2, the bearing of the upper flange 3 is extruded, the outer circumferential surface S2 of the thrust part 2 is in contact with the inner circumferential surface S3 of the upper flange 3, the upper flange 3 generates axial and radial supporting force to restrict the axial displacement and the radial displacement of the crankshaft 1 in the rotating process, and the crankshaft 1 rotates under the action of the motor rotor 8 to complete the air suction compression process of a working cavity. In addition, the outer circumferential surface S2 of the thrust part 2 is provided with a plurality of spiral grooves, an oil cavity is formed between the thrust part 2 and the upper flange 3, along with the rotation of the crankshaft 1, lubricating oil enters an inner hole of the upper flange 3 through a transverse oil supply hole of the crankshaft 1 from a central oil hole of the crankshaft 1, the lubricating oil pumps up under the action of a spiral oil groove of the upper flange 3, and oil enters between the thrust part 2 and the contact surface of the upper flange 3. The compressor structure improves a crankshaft thrust structure of the existing compressor, reduces thrust friction loss, increases crankshaft radial restraint, is beneficial to improving the running stability and reliability of the compressor, improves the lubricating state of a thrust surface, further reduces friction wear between end faces, and improves the efficiency of the compressor. In addition, the thrust part is arranged outside the working cavity of the cylinder, so that the influence of heat generated by thrust friction on the air suction compression process of the working cavity is avoided, the service performance of the bearing is improved, and the service life of the bearing is prolonged.

The beneficial effect who adopts the compressor of this application does:

1. the contact between the lower thrust surface of the crankshaft and the lower flange bearing is avoided, the friction between the lower thrust surface of the crankshaft and the lower flange bearing is reduced, and the mechanical efficiency of the compressor is improved.

2. The thrust surface is a conical inclined surface, so that the dead weight of the crankshaft can be dispersed into forces in the axial direction and the radial direction, the axial stress of the bearing is reduced, the radial constraint of the crankshaft is increased, and the stability of the crankshaft during operation is improved.

3. The outer circumferential surface of the crankshaft thrust surface is provided with the spiral groove, so that the flow of lubricating oil is facilitated, the lubrication between the crankshaft and the bearing is promoted, and the abrasion is reduced.

4. The thrust surface adopts the setting of toper inclined plane, can improve the area of contact between the thrust part, improves the stability of compressor operation.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be appreciated that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressor, comprising:

a crankshaft (1), the crankshaft (1) having a long shaft section;

a thrust part (2), the thrust part (2) being arranged along an axial direction of the long shaft section;

go up flange (3), the bearing neck of going up flange (3) is provided with and holds chamber (31), at least part thrust portion (2) be located hold chamber (31) in and with the chamber wall face butt setting of holding chamber (31), thrust portion (2) with long axle section fixed connection, bent axle (1) drives thrust portion (2) are relative go up flange (3) and set up with rotating.

2. The compressor according to claim 1, characterized in that the end of the bearing neck of the upper flange (3) opens into the housing cavity (31), the thrust portion (2) being located inside the housing cavity (31).

3. The compressor according to claim 2, characterized in that the thrust part (2) is of annular configuration, the outer peripheral surface of the thrust part (2) being disposed in abutment against the inner peripheral surface of the housing chamber (31).

4. The compressor according to claim 1, wherein an inner peripheral surface of the thrust portion (2) is provided with an internal thread, and an outer peripheral surface of the long shaft section is provided with an external thread that mates with the internal thread.

5. The compressor according to claim 1, wherein the outer peripheral surface of the thrust part (2) has a first tapered surface structure, and the inner peripheral surface of the housing chamber (31) has a second tapered surface structure that fits the first tapered surface structure.

6. The compressor of claim 5, wherein a difference between an inner circle radius of the large diameter end of the second conical surface structure and an inner circle radius of the small diameter end of the second conical surface structure is L1, a wall thickness of the bearing neck portion is L0, and wherein L1 is equal to or less than 0.5L0.

7. The compressor of claim 6, wherein the height from the large-diameter end of the second conical surface structure to the small-diameter end of the second conical surface structure is h1, the distance from the end part of the bearing neck part to the upper end surface of the upper flange (3) chassis is h, and h1 is less than or equal to h/3.

8. Compressor according to any one of claims 1 to 3, 5 to 7, characterized in that at least one of the thrust portion (2) and the housing chamber (31) is provided with an oil guiding structure.

9. The compressor according to claim 8, wherein the outer circumferential surface of the thrust part (2) is provided with the oil guide structure, which includes a first oil guide groove (21).

10. The compressor of claim 9, wherein the first oil guide groove (21) is plural, the plural first oil guide grooves (21) are arranged at intervals, and at least one of the plural first oil guide grooves (21) is a spiral oil guide groove.

11. The compressor of claim 8, wherein the oil guide structure comprises a plurality of guide vanes (22), the guide vanes (22) are arranged in a manner that the guide vanes (22) extend along the outer circumferential surface of the thrust part (2), and the outer surface of each guide vane (22) is abutted to the inner circumferential surface of the accommodating cavity (31).

12. The compressor according to claim 8, wherein the oil guide structure is provided on an inner circumferential surface of the receiving chamber (31), the oil guide structure is a second oil guide groove (32), the second oil guide groove (32) is plural, and the plural second oil guide grooves (32) are provided at intervals in a circumferential direction of the receiving chamber (31).

13. The compressor of claim 8, wherein the number of the oil guide structures is N, wherein N is greater than or equal to 3 and less than or equal to 8.

14. Compressor according to claim 1, characterized in that the thrust part (2) is made of wear-resistant ceramic.

15. Compressor according to claim 1, characterized in that the crankshaft (1) has an eccentric portion, the side of which remote from the upper flange (3) forms a lower thrust surface, the compressor further comprising a lower flange, which is arranged opposite the upper flange (3), the eccentric portion being located between the upper flange (3) and the lower flange, the lower thrust surface being arranged at a distance from the lower flange.

16. The compressor according to claim 5, characterized in that a line connecting a first end of the thrust part (2) to an outer surface of a second end of the thrust part (2) in an axial direction of the thrust part (2) makes an angle a with an axis of the crankshaft (1), wherein 30 ° ≦ a ≦ 50 °.

17. An air conditioner comprising a compressor, wherein the compressor is as claimed in any one of claims 1 to 16.