CN216306223U - Compressor and air conditioner - Google Patents

Abstract

The application discloses compressor and air conditioner, a compressor includes: the first rotor comprises a first shaft body, a first working part and a second working part, wherein the first working part and the second working part are coaxially arranged, the thread turning directions are opposite, and the first shaft body bears the first working part and the second working part; and the second rotor comprises a second shaft body, a third working part and a fourth working part which are integrally formed, the second shaft body carries and drives the third working part and the fourth working part to rotate, the third working part is meshed with the first working part, and the fourth working part is meshed with the second working part. In this application, through with second shaft body, third working part and fourth working part integrated into one piece, reduced the part of first rotor, and then the dismouting of the compressor of being convenient for.

Description

Compressor and air conditioner

Technical Field

The application belongs to the field of air conditioning equipment, and particularly relates to a compressor and an air conditioner.

Background

The compressor is generally arranged with a pair of parallel screw rotors placed in the spatial volume of the casing of the screw compressor. The space volume of the pair of screw rotors is periodically increased and decreased during the rotation process, so that the space volume is periodically communicated with and closed off the air inlet and the air outlet, and the processes of air suction, compression and air exhaust can be completed. In the related art, the compressor is composed of a large number of parts, but the difficulty in assembling and disassembling the compressor is increased correspondingly with the increase of the number of parts.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a compressor and an air conditioner, which can reduce parts for forming a spiral rotor.

In a first aspect, an embodiment of the present application provides a compressor, including:

the first rotor comprises a first shaft body, a first working part and a second working part, wherein the first working part and the second working part are coaxially arranged, the thread turning directions are opposite, and the first shaft body bears the first working part and the second working part; and

and the second rotor comprises a second shaft body, a third working part and a fourth working part which are integrally formed, the second shaft body carries and drives the third working part and the fourth working part to rotate, the third working part is meshed with the first working part, and the fourth working part is meshed with the second working part.

In an optional embodiment of the present application, the third working portion, the fourth working portion and the second shaft body are made of ironwood.

In an optional embodiment of the present application, the first shaft, the first working portion, and the second working portion are integrally formed.

In an alternative embodiment of the present application, the first shaft body is provided with a sliding bearing, and the first working portion and the second working portion are rotatably disposed on the sliding bearing.

In an optional embodiment of this application, the first axle body include the oil supply passageway and with the first oil feed hole of a plurality of oil supply passageway intercommunication, the oil supply passageway is followed the radial setting of the second axle body, first oil feed hole intercommunication to first axle body with clearance between the slide bearing, the slide bearing is equipped with the second and supplies the oil hole, second oil feed hole one end intercommunication to first axle body with clearance between the slide bearing, the other end of second oil feed hole leads to clearance between slide bearing and the first working part perhaps slide bearing with clearance between the second working part.

In an optional embodiment of the present application, the second shaft, the third working portion and the fourth working portion are made of ironwood.

In an optional embodiment of the present application, the compressor further includes a third rotor, the third rotor includes a third shaft body, a fifth working portion and a sixth working portion, the third shaft body carries the fifth working portion and the sixth working portion, the fifth working portion is engaged with the third working portion, and the sixth working portion is engaged with the fourth working portion.

In an alternative embodiment of the present application, the third rotor and the first rotor are disposed opposite to each other on both radial sides of the second shaft.

In an optional embodiment of the present application, the third shaft body, the fifth working portion and the sixth working portion are integrally formed and made of iron and wood.

In a second aspect, an embodiment of the present application further provides an air conditioner, including the compressor according to any one of the first aspect.

The first rotor can mesh with the second rotor in the rotation process, the first part of the first rotor meshes with the third part of the second rotor, and the second part of the first rotor meshes with the fourth part of the second rotor to form two sets of rotor pairs. Therefore, under the condition of the same or similar air displacement, the compressor in the embodiment of the application and the screw compressor in the prior art can reduce part of parts, such as at least one shell and the like, so that the assembly difficulty of the compressor is reduced. The second shaft body, the second working part and the third working part which are combined with the second rotor are integrally formed, so that the second shaft body, the second working part and the third working part can be disassembled and assembled in one step, the number of parts of the compressor is further reduced, and the assembly difficulty of the compressor is reduced.

Drawings

The technical solutions and advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present application.

Fig. 2 is a schematic view illustrating a meshing state of a first rotor and a second rotor of the compressor shown in fig. 1.

Fig. 3 is a schematic view showing a state where a second rotor of the compressor shown in fig. 1 is engaged with another first rotor.

Fig. 4 is another schematic structural diagram of a compressor according to an embodiment of the present application.

Fig. 5 is a schematic structural view of the compressor shown in fig. 4, in which the first rotor and the third rotor are disposed opposite to each other on both sides of the second rotor.

Fig. 6 is a schematic view showing a state where a second rotor of the compressor shown in fig. 4 is engaged with another first rotor and another third rotor.

The reference numbers in the figures are respectively:

100. a housing;

11. a working chamber;

200. a first rotor;

21. a first shaft body; 211. an oil supply passage; 212. a first oil supply hole; 22. a first working portion; 23. a second working portion; 24. a sliding bearing; 241. a second oil supply hole;

300. a second rotor;

31. a second shaft body; 32. a third working section; 33. a fourth working section;

400. a drive assembly;

500. a third rotor;

51. a third shaft body; 52. a fifth working section; 53. and a sixth working section.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present disclosure. The embodiment of the application provides a compressor, is applicable to among the air conditioner. The air conditioner may be a floor air conditioner, a wall-mounted air conditioner, a cabinet air conditioner, a ceiling air conditioner, a window air conditioner, or a central air conditioner, which is not limited in the embodiments of the present application. The compressor may be a screw compressor, such as the compressor being an opposed screw compressor. The compressor may include a casing 100, a first rotor 200, and a second rotor 300.

As shown in fig. 1, the housing 100 has a working chamber 11 accommodating a portion of the second rotor 300 and the first rotor 200. The housing 100 also has a first exhaust port (not shown), a second exhaust port (not shown), and a first intake port (not shown) that communicate with the working chamber 11. The first suction port serves to transfer gas outside the casing 100 to the working chamber 11 inside the casing 100 when the first and second rotors 200 and 300 are rotated in mesh, and the first and second discharge ports serve to compress and transfer gas inside the working chamber 11 of the casing 100 to the outside of the casing 100 when the first and second rotors 200 and 300 are rotated in mesh. So that the processes of suction, compression and discharge of the compressor can be realized.

The second rotor 300 is engaged with the first rotor 200. In the embodiment of the present application, the second rotor 300 may be a male rotor, and the first rotor 200 may be a female rotor. In other embodiments of the present application, the second rotor 300 may be a female rotor, and the first rotor 200 may be a male rotor. The following describes the technical solution of the embodiment of the present application in further detail by taking the second rotor 300 as a male rotor and the first rotor 200 as a female rotor.

Here, the second rotor 300 as the male rotor may be understood as the second rotor 300 as the driving rotor, and the first rotor 200 as the female rotor may be understood as the first rotor 200 as the driven rotor. For example, as shown in fig. 1, the end of the second rotor 300 extending out of the housing 100 may be in transmission connection with a driving assembly 400 such as a motor (including but not limited to a permanent magnet motor), the second rotor 300 may be driven to rotate by the driving assembly 400, and the second rotor 300 rotates while bringing the first rotor 200 to rotate together.

The first rotor 200 includes a first shaft body 21, a first working part 22, and a second working part 23. The first working portion 22 and the second working portion 23 are coaxially arranged and have opposite thread directions. The first shaft body 21 carries a first working portion 22 and a second working portion 23.

The first working portion 22 may include a number of first helical lobes and the second working portion 23 may include a number of second helical lobes. The number of the first helical blades can be multiple, and the number of the second helical blades can be multiple. The first and second helical blades of the present embodiment are configured to have opposite helical directions, i.e., the first and second working portions 22 and 23 have opposite rotational directions.

As shown in fig. 1, the second rotor 300 includes a second shaft body 31, a third working portion 32, and a fourth working portion 33. The second shaft body 31 is in transmission connection with the driving assembly 400, so that the driving assembly 400 can drive the second shaft body 31 to rotate around the axis of the second shaft body 31. The second shaft body 31 carries and drives the third working part 32 and the fourth working part 33 to rotate around the axis of the second shaft body 31. The third working portion 32 is engaged with the first working portion 22. The fourth working portion 33 engages the second working portion 23. Further, when the first rotor 200 rotates, the third working portion 32 drives the first working portion 22 to rotate, and the fourth working portion 33 drives the second working portion 23 to rotate, so that the driving assembly 400 drives the first rotor 200 and the second rotor 300 to rotate simultaneously.

The third working portion 32 may include a number of third helical lobes and the fourth working portion 33 may include a number of fourth helical lobes. The number of the third helical blades may be one or more, and the number of the fourth helical blades may be one or more. The third and fourth helical blades of the present embodiment are configured to have opposite helical directions, i.e., the third working portion 32 and the fourth working portion 33 have opposite helical directions. When the first rotor 200 and the second rotor 300 are rotated in mesh with each other, the third screw blade is engaged with the first screw blade, and the fourth screw blade is engaged with the second screw blade.

A first exhaust port may be located on a side of the third working portion 32 remote from the fourth working portion 33 and between the third working portion 32 and the first working portion 22 to enable the third working portion 32 to rotate in engagement with the first working portion 22 to compress and transfer a portion of the gas within the working chamber 11 of the housing 100 out of the housing 100. On the other hand, the second gas outlet is located on the side of the fourth working portion 33 away from the third working portion 32, and the second gas outlet is located between the fourth working portion 33 and the second working portion 23, so that when the fourth working portion 33 and the second working portion 23 are engaged to rotate, a part of gas in the working chamber 11 of the housing 100 can be compressed and transmitted out of the housing 100.

It can be seen that the meshing of the first rotor 200 assembly and the second rotor 300 assembly is equivalent to two screw compressors connected in parallel, as compared to the prior art. Therefore, the compressor of the embodiment of the application can be greatly reduced in size under the condition of the same or similar air displacement as that of the screw compressor in the prior art. On the other hand, under the condition of the same or similar exhaust gas volume, the compressor of the embodiment of the present application and the screw compressor of the prior art can reduce part of components, such as at least one shell 100, and further reduce the assembly difficulty of the compressor.

In the related art, the second shaft 31 and the third working portion 32 are integrally formed, and the fourth working portion 33 is separately manufactured and then sleeved on the second shaft 31, or the second shaft 31 and the fourth working portion 33 are integrally formed, and the third working portion 32 is separately manufactured and then sleeved on the second shaft 31, or the second shaft 31, the third working portion 32 and the fourth working portion 33 are separately manufactured and then assembled to obtain the second rotor 300. It will be appreciated that there will be some form tolerance for each part during manufacturing and some assembly tolerance for assembly between parts during assembly. Therefore, in the related art, the division of the first rotor 200 into multiple parts for manufacturing and assembling results in a large tolerance of the first rotor 200 in terms of accumulated form and position, which in turn affects the precision of the first rotor 200 and the second rotor 300 and the precision of the second rotor 300 and the housing 100.

In order to reduce the form and position tolerance of the first and second rotors 200 and 300 and the form and position tolerance of the first and second rotors 200 and 100, in the embodiment of the present application, the second shaft body 31, the third working portion 32, and the fourth working portion 33 of the second rotor 300 may be integrally formed. Therefore, the form and position tolerance between each part of the first rotor 200 and other parts of the compressor can be reduced.

On the other hand, it can be understood that, since the second shaft body 31, the third working portion 32 and the fourth working portion 33 are integrally formed, in the process of disassembling and assembling the compressor, the second shaft body 31, the third working portion 32 and the fourth working portion 33 can be disassembled and assembled in one step, and compared with the process of disassembling and assembling the second shaft body 31, the third working portion 32 and the fourth working portion 33 in multiple steps, the compressor provided by the embodiment of the present application has the advantages of simple disassembly and assembly and high disassembly and assembly efficiency, and is more suitable for industrial mass production and assembly operations.

The manner of integrally forming the second shaft body 31, the third working portion 32 and the fourth working portion 33 may be 3D printing, injection molding, die casting, milling, and the like, which is not limited in the embodiments of the present application.

In some embodiments, the third working portion 32, the fourth working portion 33, and the second shaft 31 are made of ironwood.

It is understood that, on the one hand, ironwood (Ostrya japonica), which is a wood made of a plant of the genus ironwood of the family betulaceae, has low temperature resistance and can be applied to the sub-zero environment. The third working part 32, the fourth working part 33 and the second shaft 31 made of the ironwood material enable the compressor to still stably work in the subzero environment. In contrast, if the third working portion 32, the fourth working portion 33 and the second shaft 31 are made of metal, the first rotor 200 is fragile and easily damaged in the sub-zero environment.

Referring to fig. 2, fig. 2 is a schematic diagram illustrating a meshing state of a first rotor and a second rotor of the compressor shown in fig. 1. In some embodiments, the first shaft body 21, the first working part 22, and the second working part 23 of the first rotor 200 are manufactured separately. The first shaft body 21 is fixed to the housing 100. The first shaft body 21 is sleeved with a sliding bearing 24, and the first working part 22 and the second working part 23 are rotatably arranged on the sliding bearing 24. Further, when the second rotor 300 rotates, the third working part 32 may drive the first working part 22 to rotate, and the fourth working part 33 may drive the second working part 23 to rotate. The sliding bearing 24 can reduce the friction between the first shaft body 21 and the first working portion 22, and reduce the friction between the first shaft body 21 and the second working portion 23.

In order to further reduce the frictional force between the first shaft body 21 and the first working portion 22, and the frictional force between the first shaft body 21 and the second working portion 23, lubricating oil may be injected between the first shaft body 21 and the first working portion 22, and between the first shaft body 21 and the second working portion 23.

For example, as shown in fig. 2, the first shaft body 21 includes an oil supply passage 211 and a plurality of first oil supply holes 212 communicating with the oil supply passage 211. The oil supply passage 211 is disposed along the radial direction of the second shaft body 31, the first oil supply hole 212 communicates with the gap between the first shaft body 21 and the sliding bearing 24, and further, the external oil supply device can inject the lubricating oil into the first oil supply hole 212 through the oil supply passage 211, and the lubricating oil in the first oil supply hole 212 is injected into the gap between the first shaft body 21 and the sliding bearing 24. The sliding bearing 24 is provided with a second oil supply hole 241, one end of the second oil supply hole 241 is communicated to the gap between the first shaft body 21 and the sliding bearing 24, and the other end of the second oil supply hole 241 is communicated to the gap between the sliding bearing 24 and the first working portion 22 or the gap between the sliding bearing 24 and the second working portion 23. Further, the lubricating oil between the first shaft body 21 and the sliding bearing 24 may be injected between the sliding bearing 24 and the first working portion 22 or between the sliding bearing 24 and the second working portion 23 through the second oil supply hole 241.

Referring to fig. 3, fig. 3 is a schematic view illustrating a meshing state between a second rotor and another first rotor of the compressor shown in fig. 1.

Alternatively, as shown in fig. 3, the first shaft body 21, the first working portion 22 and the second working portion 23 of the first rotor 200 may be integrally formed, wherein the first shaft body 21 is rotatably disposed on the housing 100, so that the first shaft body 21 can carry and drive the first working portion 22 to slide and rotate the second working portion 23.

It will be appreciated that there will be some form tolerance for each part during manufacturing and some positional tolerance for assembly between parts during assembly. Therefore, the structure in which the first shaft body 21, the first operating portion 22, and the second operating portion 23 of the first rotor 200 are integrally formed can reduce the form and position error of the first rotor 200, and further improve the fitting accuracy of the first rotor 200 and the second rotor 300 and the fitting accuracy of the first rotor 200 and the housing 100.

On the other hand, in a case where the first shaft body 21, the first working portion 22, and the second working portion 23 are integrally formed: when the compressor is disassembled, the first shaft body 21, the first working part 22 and the second working part 23 can be disassembled in one step. Therefore, compared with the scheme of assembling and disassembling the first shaft body 21, the first working part 22 and the second working part 23 in multiple steps, the scheme that the first shaft body 21, the first working part 22 and the second working part 23 are integrally formed has the advantages of simplicity and convenience in assembling and disassembling and high assembling and disassembling efficiency, and is more suitable for industrial mass production and assembling operation.

It is understood that the manner in which the first shaft body 21, the first working portion 22 and the second working portion 23 are integrally formed may be 3D printing, injection molding, die casting, milling, and the like, and the embodiment of the present application is not limited thereto.

In some embodiments, the first shaft body 21, the first working portion 22, and the second working portion 23 are made of ironwood.

It is understood that, in the case of an ironwood (Ostrya japonica), i.e., a wood made of a plant of the genus ironwood of the family betulaceae, on the one hand, the ironwood has a low temperature resistance characteristic and is suitable for use in a sub-zero environment, while a part of an air conditioner having a heating function needs to heat a room in the sub-zero environment, and the first shaft body 21, the first working portion 22 and the second working portion 23 made of ironwood still enable the compressor to stably operate in the sub-zero environment. In contrast, if the first shaft 21, the first working portion 22 and the second working portion 23 are made of metal, the first rotor 200 is fragile and easily damaged in the sub-zero environment.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a compressor according to an embodiment of the present disclosure. The compressor may further include a third rotor 500, and the third rotor 500 includes a third shaft body 51, a fifth working part 52, and a sixth working part 53. The third shaft body 51 carries said fifth working part 52 and sixth working part 53, the fifth working part 52 being in engagement with the third working part 32 and the sixth working part 53 being in engagement with the fourth working part 33.

The fifth working portion 52 may include a number of fifth helical lobes and the sixth working portion 53 may include a number of sixth helical lobes. The number of the fifth spiral blades may be one or more, and the number of the sixth spiral blades may be one or more. The fifth and sixth helical blades of the present embodiment are configured to have opposite helical directions, i.e., the helical directions of the fifth and sixth working portions 52 and 53 are opposite. When the second rotor 300 and the third rotor 500 are rotated in mesh with each other, the third screw blade and the fifth screw blade mesh with each other, and the fourth screw blade and the sixth screw blade mesh with each other.

Accordingly, the working chamber 11 of the housing 100 also accommodates the third rotor 500. Namely, the third shaft body 51, the fifth working portion 52 and the sixth working portion 53 are disposed in the working chamber 11. The housing 100 further has a third air outlet (not shown), a fourth air outlet (not shown) and a second air inlet (not shown) all communicating with the working chamber 11. The second suction port serves to deliver the gas outside the casing 100 to the working chamber 11 inside the casing 100 when the second rotor 300 and the third rotor 500 are rotated in mesh, and the third discharge port and the fourth discharge port serve to compress and deliver the gas inside the working chamber 11 of the casing 100 to the outside of the casing 100 when the third rotor 500 and the second rotor 300 are rotated in mesh. So that the processes of suction, compression and discharge of the compressor can be realized.

Specifically, the third gas outlet is located on the side of the third working portion 32 away from the fourth working portion 33, and the third gas outlet is located between the third working portion 32 and the fifth working portion 52, so that when the third working portion 32 and the fifth working portion 52 are engaged to rotate, a part of gas in the working chamber 11 of the housing 100 can be compressed and transmitted out of the housing 100. On the other hand, the fourth gas outlet is located on the side of the fourth working portion 33 away from the third working portion 32, and the fourth gas outlet is located between the fourth working portion 33 and the sixth working portion 53, so that when the fourth working portion 33 and the sixth working portion 53 are engaged to rotate, a part of gas in the working chamber 11 of the housing 100 can be compressed and transmitted out of the housing 100.

It can be seen that, compared with the prior art, the meshing of the first rotor 200 and the second rotor 300 and the meshing of the second rotor 300 and the third rotor 500 are equivalent to the parallel connection of four screw compressors. Therefore, the compressor of the embodiment of the application can be greatly reduced in size under the condition of the same or similar air displacement as that of the screw compressor in the prior art.

Referring to fig. 5, fig. 5 is a schematic structural view of the compressor shown in fig. 3, in which the first rotor and the third rotor are disposed opposite to each other and on two sides of the second rotor. In some embodiments, the third rotor 500 and the first rotor 200 are disposed opposite to each other on both sides of the second shaft body 31 in the radial direction. The first working part 22 and the fifth working part 52 are symmetrically arranged with respect to the third working part 32, and the second working part 23 and the sixth working part 53 are symmetrically arranged with respect to the fourth working part 33.

The first working portion 22 and the fifth working portion 52 have the same length, the same number of helical lobes and the same end profile. The length, number of helical lobes and end profile of the second working portion 23 and the sixth working portion 53 are the same.

In some embodiments, as shown in fig. 4, the third shaft body 51, the fifth working part 52 and the sixth working part 53 of the third rotor 500 may be separately manufactured. Illustratively, the third shaft body 51 is fixedly disposed on the housing 100, the fifth working portion 52 is rotatably mounted on the third shaft body 51, and the sixth working portion 53 is rotatably mounted on the third shaft body 51. Further, when the second rotor 300 rotates, the third working part 32 may drive the fifth working part 52 to rotate, and the fourth working part 33 may drive the sixth working part 53 to rotate.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a meshing state of the second rotor, the first rotor and the third rotor of the compressor shown in fig. 4.

Alternatively, as shown in fig. 5, the third shaft body 51, the fifth working part 52 and the sixth working part 53 of the third rotor 500 may be integrally formed. Wherein, the third shaft body 51 is rotatably disposed on the housing 100, so that the third shaft body 51 can carry and drive the fifth working part 52 and the sixth working part 53 to rotate.

It will be appreciated that there will be some form tolerance for each part during manufacturing and some positional tolerance for assembly between parts during assembly. Therefore, the structure in which the third shaft body 51, the fifth operating portion 52, and the sixth operating portion 53 of the third rotor 500 are integrally formed can reduce the form and position error of the third rotor 500, and further improve the fitting accuracy between the third rotor 500 and the second rotor 300 and the fitting accuracy between the third rotor 500 and the housing 100.

On the other hand, in a case where the third shaft body 51, the fifth working portion 52, and the sixth working portion 53 are integrally formed: when the compressor is disassembled, the third shaft body 51, the fifth working part 52 and the sixth working part 53 can be disassembled in one step. Therefore, compared with the scheme that the third shaft body 51, the fifth working part 52 and the sixth working part 53 are assembled and disassembled in multiple steps, the scheme that the third shaft body 51, the fifth working part 52 and the sixth working part 53 are integrally formed has the advantages of simplicity and convenience in assembly and disassembly and high assembly and disassembly efficiency, and is more suitable for industrial mass production and assembly operation.

It is understood that the manner in which the third shaft body 51, the fifth working portion 52 and the sixth working portion 53 are integrally formed may be 3D printing, injection molding, die casting, milling, and the like, and the embodiment of the present application is not limited thereto.

In some embodiments, the third shaft body 51, the fifth working portion 52, and the sixth working portion 53 are made of ironwood.

It is understood that, on the one hand, the ironwood (Ostrya japonica), i.e., the wood made of the plant of the genus ironwood of the family betulaceae, has the characteristic of low temperature resistance, and is suitable for the sub-zero environment, while the air conditioner having a heating function partially needs to heat the room in the sub-zero environment, and the third shaft body 51, the fifth working portion 52 and the sixth working portion 53 made of the ironwood still enable the compressor to stably operate in the sub-zero environment. In contrast, if the third shaft 51, the fifth working portion 52 and the sixth working portion 53 are made of metal, the first rotor 200 is fragile and easily damaged in the sub-zero environment.

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 compressor and the air conditioner provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A compressor, comprising:

the first rotor comprises a first shaft body, a first working part and a second working part, wherein the first working part and the second working part are coaxially arranged, the thread turning directions are opposite, and the first shaft body bears the first working part and the second working part; and

and the second rotor comprises a second shaft body, a third working part and a fourth working part which are integrally formed, the second shaft body carries and drives the third working part and the fourth working part to rotate, the third working part is meshed with the first working part, and the fourth working part is meshed with the second working part.

2. The compressor of claim 1, wherein the second shaft, the third working portion and the fourth working portion are of a ferrous wood material.

3. The compressor of claim 1, wherein the first shaft body, the first working portion and the second working portion are integrally formed.

4. The compressor of claim 1, wherein the first shaft body is sleeved with a sliding bearing, and the first working portion and the second working portion are rotatably disposed on the sliding bearing.

5. The compressor according to claim 4, wherein the first shaft body is provided with an oil supply passage and a plurality of first oil supply holes communicating with the oil supply passage, the oil supply passage is provided in a radial direction of the second shaft body, the first oil supply holes communicate with a gap between the first shaft body and the sliding bearing, the sliding bearing is provided with a second oil supply hole, one end of the second oil supply hole communicates with a gap between the first shaft body and the sliding bearing, and the other end of the second oil supply hole communicates with a gap between the sliding bearing and the first working portion or a gap between the sliding bearing and the second working portion.

6. The compressor of any one of claims 3 to 4, wherein the second shaft body, the third working portion and the fourth working portion are of ironwood.

7. A compressor according to any one of claims 1 to 5, further comprising a third rotor comprising a third shaft body carrying the fifth and sixth working portions, a fifth working portion in mesh with the third working portion and a sixth working portion in mesh with the fourth working portion.

8. The compressor of claim 7, wherein the third rotor and the first rotor are disposed opposite each other on both radial sides of the second shaft.

9. The compressor of claim 8, wherein the third shaft body, the fifth working portion and the sixth working portion are integrally formed and are made of ironwood.

10. An air conditioner characterized by comprising the compressor of any one of claims 1 to 9.

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