CN113389727A

CN113389727A - Compressor and air conditioner

Info

Publication number: CN113389727A
Application number: CN202110843231.9A
Authority: CN
Inventors: 龙忠铿; 武晓昆; 毕雨时; 李磊
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-09-14

Abstract

The invention discloses a compressor and an air conditioner, wherein the compressor comprises a shell, a first rotor, a first shaft body and a first anti-collision structure, the first rotor can rotate in the shell along a first axis, the first rotor comprises a first part and a second part, the thread turning directions of the first part and the second part are opposite, the first part is made of a metal material, the second part is made of a non-metal material, at least part of the first anti-collision structure is arranged between the first part and the shell, and the hardness of the material of the shell and the hardness of the material of the first part are higher than that of the material of the first anti-collision structure, so that the first part is prevented from colliding with the shell. Compared with the traditional double-screw compressor, the compressor of the invention completely cancels the thrust bearing on the premise of ensuring normal operation, and has the advantages of compact structure, energy consumption saving, simplified assembly and small working noise.

Description

Compressor and air conditioner

Technical Field

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

Background

The compressor is a core component of the refrigeration system, and is closely related to the service life and the refrigeration effect of the refrigeration system. The working principle of the compressor is as follows: the refrigerant gas of low temperature and low pressure is sucked, then the refrigerant gas is compressed, and then the refrigerant liquid of high temperature and high pressure is discharged, thereby realizing the refrigeration cycle of compression, condensation, expansion and heat absorption and evaporation. The compressor is various, the screw compressor is widely applied to the field of refrigeration and air conditioning due to high reliability, the screw compressor comprises a single screw compressor and a double screw compressor, and the double screw compressor is most widely applied.

A pair of screw rotors which are meshed with each other and have opposite rotation directions are arranged in parallel in a shell of a traditional double-screw compressor, and are correspondingly a male screw rotor and a female screw rotor, the male screw rotor and the female screw rotor are respectively provided with a suction end and a discharge end, the suction end is communicated with a suction port of the double-screw compressor, and the discharge end is communicated with a discharge port of the double-screw compressor. The purpose of air suction, compression and exhaust is achieved through the rotary motion of the pair of screw rotors in the shell. Since the gas is compressed from low pressure to high pressure in the process of compressing the gas, the gas pressure is from low to high in the direction of a gas suction port of the compressor pointing to a gas discharge port, the pressures of gas suction and gas discharge are different, and thus axial force pointing from a gas discharge end to a gas suction end is formed on both the male screw rotor and the female screw rotor. In order to limit the axial forces to reduce the operating load of the twin-screw compressor, thrust bearings are usually provided on at least one side of the male screw rotor and at least one side of the female screw rotor to carry the axial forces, and radial bearings are provided on both sides of the male screw rotor and both sides of the female screw rotor to balance the radial forces.

Therefore, the traditional double-screw compressor has a large number of bearings, including at least two thrust bearings and at least four radial bearings, and occupies a large space, so that the traditional double-screw compressor has the defects of large volume and high operation power consumption.

Disclosure of Invention

Aiming at the defects in the prior art, the embodiment of the invention provides a compressor and an air conditioner, aiming at omitting a thrust bearing in the traditional double-screw compressor on the premise of ensuring the normal operation of the compressor so as to reduce the operation power consumption of the double-screw compressor and reduce the volume of the double-screw compressor.

In a first aspect, the present invention provides a compressor comprising:

a housing;

a first rotor rotatable within the housing along a first axis, the first rotor comprising first and second portions of opposite hand threads, the first portion being of a metallic material and the second portion being of a non-metallic material;

a first shaft body carrying the first part and the second part; and

a first crush zone, at least a portion of the first crush zone being disposed between the first portion and the housing;

wherein the hardness of the material of the shell and the hardness of the material of the first portion are both higher than the hardness of the material of the first impact structure.

In an optional embodiment of the present invention, the first anti-collision structure is disposed on a surface of the housing, and at least a portion of the first anti-collision structure can be projected on an end surface of the first portion away from the second portion along the direction of the first axis.

In an optional embodiment of the invention, the first crash structure is disposed on an end surface of the first portion remote from the second portion.

In an optional implementation manner of the present invention, the first anti-collision structure is sleeved on the first shaft, and the first anti-collision structure is disposed between one end of the first portion, which is far away from the second portion, and the housing.

In an optional embodiment of the present invention, the first portion is sleeved on the first shaft, and a first transmission member is disposed between an inner surface of the first portion and an outer surface of the first shaft;

the first transmission piece is provided with a limiting structure, and at least part of the limiting structure protrudes out of the end face of the first part far away from the second part;

the first anti-collision structure comprises the limiting structure.

In an alternative embodiment of the invention, the first transmission member comprises at least one bearing shell.

In an optional implementation manner of the present invention, a first accommodating cavity for installing the first shaft is disposed on the housing, the first anti-collision structure is disposed in the first accommodating cavity, and the first anti-collision structure protrudes from the first accommodating cavity.

In an optional implementation manner of the present invention, the first anti-collision structure is an annular structure, and the first shaft is sleeved with the first anti-collision structure.

In an alternative embodiment of the present invention, no anti-collision structure is disposed between an end of the second portion away from the first portion and the housing.

In an alternative embodiment of the present invention, the compressor further comprises: and the motor is in driving connection with the first shaft body so as to drive the first part and the second part to rotate along the first axis.

In an alternative embodiment of the present invention, the compressor further comprises:

a second rotor rotatable within the housing along a second axis and including third and fourth portions of opposite thread direction, the third portion being of a non-metallic material and configured to engage the first portion, the fourth portion being of a metallic material and configured to engage the second portion; and

a second shaft carrying the third portion and the fourth portion.

a second crush structure, at least a portion of the second crush structure being disposed between the fourth portion and the housing;

wherein the hardness of the material of the shell and the hardness of the material of the fourth portion are both higher than the hardness of the material of the second impact structure.

In an optional implementation manner of the present invention, no anti-collision structure is disposed between an end of the third portion away from the fourth portion and the housing.

In an optional implementation manner of the present invention, the third portion and the fourth portion are both sleeved on the second shaft body, a second transmission member is disposed between an inner surface of the third portion and an outer surface of the second shaft body, and a third transmission member is disposed between an inner surface of the fourth portion and an outer surface of the second shaft body.

In an alternative embodiment of the present invention, an end surface of the second transmission member near the housing does not protrude from an end surface of the third portion far from the fourth portion.

In an optional implementation manner of the present invention, an end surface of the third transmission member close to the housing protrudes from an end surface of the fourth portion far from the third portion.

In a second aspect, the present invention provides an air conditioner comprising the compressor of any one of the first aspects.

The invention provides a compressor and an air conditioner, wherein the compressor comprises a shell, a first rotor, a first shaft body and a first anti-collision structure, the first rotor can rotate in the shell along a first axis, the first shaft body is used for bearing the first rotor, the first rotor comprises a first part and a second part which are symmetrically arranged and have opposite rotation directions, the first part is made of a metal material, the second part is made of a non-metal material, and the non-metal material can be a peek material or other non-metal materials with good impact resistance and good buffer performance.

The first anti-collision structure is used for avoiding the first part from colliding with the shell, and in the actual working process of the compressor, when the first part is close to the shell due to the action of the axial force, the first anti-collision structure can separate the first part from the shell, so that a gap is always kept between the first part and the shell, the first part and/or the shell are effectively prevented from being damaged due to collision, and the negative influence on the service life and the working performance of the compressor due to collision is eliminated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

Fig. 1 is a schematic partial structural view of a first compressor according to an embodiment of the present invention.

Fig. 2 is a schematic view illustrating the first rotor, the second rotor, the first shaft, the second shaft, the first transmission member, the second transmission member, and the third transmission member of fig. 1 cooperating with each other.

Fig. 3 is a schematic structural view of the first transmission member in fig. 1.

Fig. 4 is a perspective view of the first bearing shell.

Fig. 5 is a partially enlarged view of the compressor shown in fig. 1, shown as a dashed circle at a.

Fig. 6 is a partially enlarged schematic view of the compressor shown in fig. 1, shown as a dashed circle at B.

Fig. 7 is a partially enlarged view of the compressor shown in fig. 1, shown as a dashed circle at C.

Fig. 8 is a schematic partial structural view of a second compressor according to an embodiment of the present invention.

Fig. 9 is a state diagram of the first crash structure abutting against the first portion according to an embodiment of the present invention.

Fig. 10 is a state diagram of the first crash structure abutting against the first portion according to another embodiment of the invention.

Fig. 11 is a partial structural schematic view of a third compressor according to an embodiment of the present invention.

10. A first shaft body; 11. a first axis; 12. a first end portion; 13: a second end portion;

20. a first rotor; 21. a first portion; 22. a second portion; 201. a first gas-absorbing end face; 202. a first exhaust end face; 203. a second suction end face; 204. a second exhaust end face; 211. a first helical blade; 221. a second helical blade;

30. a second shaft body; 31. a second axis; 32. a third end portion; 33. a fourth end portion;

40. a second rotor; 41: a third portion; 42. a fourth part; 401. a third suction end face; 402. a third exhaust end face; 403. a fourth suction end face; 404. a fourth exhaust end face; 411. a third helical blade; 421. a fourth helical blade;

50. a housing; 51. a first bearing housing; 52. a second bearing housing; 501. a first exhaust port; 502. a second exhaust port; 503. an air suction port; 521. a first accommodating chamber; 511. a second accommodating chamber;

60. a motor;

71. a first radial bearing; 72. a second radial bearing;

81. a first transmission member; 82. a second transmission member; 83. a third transmission member; 801. a first bearing shell; 802. a second bearing shell; 8011. a first limit structure; 8012. a first bottom surface; 8021. a second limit structure; 8022. a second bottom surface; 8201. a third limiting structure; 8202. a fourth limit structure; 8301. a fifth limiting structure; 8302. a sixth limiting structure;

91. a first impact structure; 92. a second impact structure; 911. a first boss; 912. a second boss;

100. a compressor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments. Based on this, the embodiments of the present invention provide one, and the details are described below.

As used herein, "first," "second," and the like are used to distinguish between different objects and are not used to describe a particular order.

As used herein, "comprise," "have" and any variations thereof, are intended to cover non-exclusive inclusions.

As used herein, "plurality" means more than two.

The embodiment of the invention provides a compressor. Referring to fig. 1 and 2, the compressor 100 includes a first shaft 10, a first rotor 20, a second shaft 30, a second rotor 40, and a casing 50. The housing 50 may accommodate the first shaft body 10, the first rotor 20, the second shaft body 30, and the second rotor 40, the first shaft body 10 and the second shaft body 30 are disposed in parallel with each other in the housing 50, the first rotor 20 is disposed on the first shaft body 10, and the second rotor 40 is disposed on the second shaft body 30.

The first rotor 20 and the second rotor 40 are meshed, wherein the first rotor 20 is a male rotor and the second rotor 40 is a female rotor. It will be appreciated that the first rotor 20 may also be a female rotor and the second rotor 40 a male rotor.

The first rotor 20 as a male rotor may be understood as the first rotor 20 being a driving rotor, and the second rotor 40 as a female rotor may be understood as the second rotor 40 being a driven rotor. The first rotor 20 may be drivingly connected to a drive assembly, such as a motor 60, such that the first rotor 20 may be driven in rotation by the drive assembly, such as a motor 60, and the first rotor 20 rotates while driving the second rotor 40 in rotation by meshing engagement.

The first shaft body 10 has a first end portion 12 and a second end portion 13. The first rotor 20 is carried by the first shaft body 10, the first shaft body 10 is configured to rotatably support the first rotor 20, that is, the first shaft body 10 is configured as a rotating shaft, and both ends of the first shaft body 10 are respectively configured with a first radial bearing 71 and a second radial bearing 72 for carrying radial force, the first radial bearing 71 and the second radial bearing 72 being exemplified as cylindrical roller bearings. The motor 60 is drivingly connected to the first shaft 10 to rotate the first shaft 10 and the first rotor 20 together along the first axis 11. The first radial bearing 71 is close to the first end portion 12, the second radial bearing 72 is close to the second end portion 13, and both the first radial bearing 71 and the second radial bearing 72 are sleeved on the first shaft 10.

The first rotor 20 has at least two portions, and the example first rotor 20 includes first and

second portions

21, 22 of opposite thread turns, the first and

second portions

21, 22 being rotatable within the housing 50 about the first axis 11. The material of the first part 21 is a metallic material, exemplified by forged steel, cast iron, copper, etc., and the material of the second part 22 is a non-metallic material, exemplified by a peek material. The first portion 21 is sleeved on the first shaft 10, the first portion 21 is slidably connected with the first shaft 10, and the second portion 22 is integrally formed with the first shaft 10, i.e. the material of the first shaft 10 is the same as that of the second portion 22. It is understood that, in other embodiments of the present invention, the first portion 21 may be integrally formed with the first shaft 10, and the second shaft is sleeved on the first shaft 10; the first portion 21 and the second portion 22 may be sleeved on the first shaft 10, but the first portion 21 and the second portion 22 cannot be integrally formed with the first shaft 10.

The first rotor 20 has helical lobes, which may also be referred to as male lobes. The first rotor 20 includes a first spiral blade 211 located at the first portion 21 and a second spiral blade 221 located at the second portion 22, the number of the first spiral blades 211 may be plural, and the number of the second spiral blades 221 may be plural. The first and second

helical blades

211 and 221 are configured to have opposite helical directions such that the helical directions of the first and

second portions

21 and 22 are opposite.

The end surface of the first part 21 close to the second part 22 is a first air suction end surface 201, and the end surface of the first part 21 far away from the second part 22 is a first air discharge end surface 202. The end surface of the second portion 21 close to the first portion 21 is a second suction end surface 203, and the end surface of the second portion 22 far from the first portion 21 is a second discharge end surface 204. The first air intake end surface 201 is attached to the second air intake end surface 203. It is understood that in other embodiments of the present invention, the first suction end surface 201 and the second suction end surface 203 may not be attached to each other and may have a slight gap, which may be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc.

A first transmission piece 81 is arranged between the inner surface of the first part 21 and the outer surface of the first shaft body 10, the first transmission piece 81 comprising at least one sliding bearing and/or at least one rolling bearing. The first portion 21 is a hollow structure, the first transmission member 81 is sleeved on the first portion 21, and the first transmission member 81 and the first portion 21 are sleeved on the first shaft 10 together, so that the first portion 21 and the first transmission member 81 can rotate around the first shaft 10 together.

The second shaft body 30 has a third end 32 and a fourth end 33. The second rotor 40 is carried by the second shaft body 30, and the second shaft body 30 is a fixed shaft, that is, when the second rotor 40 rotates along the second axis 31 of the second shaft body 30, the second shaft body 30 is fixed, so that radial bearings for bearing radial force are not required to be arranged at two ends of the second shaft body 30, thereby effectively reducing the number of bearings and the energy consumption of operation of the compressor 100, and being beneficial to the compactness of the compressor 100. The second shaft 30 is parallel to the first shaft 10, and the second axis 31 is parallel to the first axis 11. The second rotor 40 is sleeved on the second shaft 30, and the second rotor 40 is slidably connected with the second shaft 30.

The second rotor 40 has at least two sections, and the example second rotor 40 includes third and

fourth sections

41, 42 of opposite thread direction, the third and

fourth sections

41, 42 being rotatable within the housing 50 about the second axis 31. The material of the third portion 41 is a non-metallic material, an example of which is a peek material; the material of the fourth portion 42 is a metallic material, examples of which are forged steel, cast iron, copper, etc. The third portion 41 is configured to be fittingly engaged with the first portion 21, and the fourth portion 42 is configured to be fittingly engaged with the second portion 22, that is, the two portions engaged with each other are made of different materials, one of which is made of a metal material, and the other is made of a non-metal material, so as to reduce the operation noise of the compressor 100.

The second rotor 40 has helical lobes, which may also be referred to as female lobes. The second rotor 40 includes a third spiral blade 411 located in the third portion 41 and a fourth spiral blade 421 located in the fourth portion 42, the number of the third spiral blades 411 may be plural, and the number of the fourth spiral blades 421 may be plural. In the present embodiment, the first spiral blade 211 and the second spiral blade 221 are configured to have opposite spiral directions, so that the thread directions of the third portion 41 and the fourth portion 42 are opposite.

An end surface of the third working portion 41 close to the fourth working portion 42 is a third air intake end surface 401, and an end surface of the third working portion 41 far from the fourth working portion 42 is a third air discharge end surface 402. An end surface of the fourth working portion 42 close to the third working portion 41 is a fourth air intake end surface 403, and an end surface of the fourth working portion 42 far from the third working portion 41 is a fourth air discharge end surface 404. The third and fourth suction end surfaces 401, 403 do not abut but have a slight gap, which may be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc., to ensure that the first and

fourth portions

21, 42 do not interfere with each other and the second and

third portions

22, 41 do not interfere with each other.

The third portion 41 and the fourth portion 42 are sleeved on the second shaft 30, and the third portion 41 and the fourth portion 42 are slidably connected to the second shaft 30. The third portion 41 is a hollow structure, a second transmission member 82 is disposed between the inner surface of the third portion 41 and the second shaft 30, the third portion 41 is sleeved on the second transmission member 82, and the second transmission member 82 and the third portion 41 are sleeved on the second shaft 30 together, so that the third portion 41 and the second transmission member 82 can rotate around the second shaft 30 together. The fourth portion 42 is a hollow structure, a third transmission member 83 is disposed between the inner surface of the fourth portion 42 and the second shaft 30, the fourth portion 42 is sleeved on the third transmission member 83, and the third transmission member 83 and the fourth portion 42 are sleeved on the second shaft 30 together, so that the fourth portion 42 and the third transmission member 83 can rotate around the second shaft 30 together. The second transmission part 82 and the third transmission part 83 each comprise at least one plain bearing and/or at least one rolling bearing.

The housing 50 includes a first bearing seat 51 and a second bearing seat 52, the first rotor 20 and the second rotor 40 are disposed between the first bearing seat 51 and the second bearing seat 52 in parallel, the first shaft 10 and the second shaft 30 are disposed between the first bearing seat 51 and the second bearing seat 52 in parallel, and the first bearing seat 51 is disposed on the same side as the motor 60. The first bearing housing 51 is used for carrying a first radial bearing 71, the second bearing housing 52 is used for carrying a second radial bearing 72, and the first bearing housing 51 and the second bearing housing 52 are also used for carrying the first shaft body 10 and the second shaft body 30. The first end 12 of the first shaft body 10 passes through the first bearing seat 51 to be in transmission connection with the motor 60, and the second end 13 is rotatably disposed on the second bearing seat 52, such that the first portion 21 and the second portion 22 are confined between the first bearing seat 51 and the second bearing seat 52. The third end 32 of the second shaft 30 is fixed to the first bearing seat 51 and the fourth end 33 of the second shaft 30 is fixed to the second bearing seat 52 such that the third portion 41 and the fourth portion 42 are confined between the first bearing seat 51 and the second bearing seat 52.

The casing 50 is provided with a first exhaust port 501, a second exhaust port 502, and an intake port 503. The first exhaust port 501 and the second exhaust port 502 are respectively located at both ends of the housing 50 in the direction of the first axis 11 of the first shaft body 10, and the first exhaust port 501 communicates with the first exhaust end surface 202 and the third exhaust end surface 402, and the second exhaust port 502 communicates with the second exhaust end surface 204 and the fourth exhaust end surface 404. The air inlet 503 is located at an intermediate position of the casing 50 along the first axis 11 of the first shaft 10, and the air inlet 503 is communicated with the first air inlet end surface 201, the second air inlet end surface 203, the third air inlet end surface 401 and the fourth air inlet end surface 403.

Because the traditional double-screw compressor has more bearings, at least two thrust bearings and larger occupied space of the thrust bearings, the traditional double-screw compressor has the defects of larger volume and higher operation power consumption, and is not beneficial to reducing the manufacturing cost of the double-screw compressor and simplifying the assembly process of the double-screw compressor. The double-screw compressor of the embodiment of the application omits a thrust bearing, and has the advantages of compact structure, low operation power consumption and low working noise. In the compressor 100 of the embodiment of the present application, when the first rotor 20 and the second rotor 40 rotate in a meshing manner, the first portion 21 generates a first axial force, the second portion 22 generates a second axial force, and since the first portion 21 and the second portion 22 are symmetrically arranged and have opposite rotation directions, the first axial force and the second axial force can be partially cancelled, and the first portion 21 and the second portion 22 can be urged to collide with the casing 50 by the un-cancelled axial force. The material of the second portion 22 is a non-metallic material such as a peek material, which has desirable impact resistance and cushioning properties, so that the second portion 22 does not have undesirable consequences when it collides with the housing 50; however, the material of the first portion 21 is a metal material, the hardness of the metal material is high, and the first portion 21 collides with the shell 50, such that the shell 50/the first portion 21 may be damaged, which may adversely affect the working performance and the service life of the compressor 100, so that a collision prevention structure is required to be disposed between the first portion 21, the shell 50, and/or the first portion 21 and the shell 50, so as to prevent the first portion 21 from colliding with the shell 50. Similarly, a bump stop structure may be disposed between the fourth portion 42, the housing 50, and/or the fourth portion 42 and the housing 50 to prevent the fourth portion 42 from colliding with the housing 50.

It should be noted that no crash structure is required between the second portion 22 and the housing 50, but a crash structure may be provided. Similarly, the third portion 41 and the housing 50 need not have a crash structure therebetween, but a crash structure may be provided.

By way of example, with continued reference to fig. 1, the compressor 100 includes a first crush structure 91 and a second crush structure 92, the first crush structure 91 being disposed between the first portion 21 and the shell 50, and the second crush structure being disposed between the fourth portion 42 and the shell 50.

Fig. 3 shows the structural composition of the first transmission member 81, please refer to fig. 1 to 3, the first transmission member 81 includes a first bearing bush 801 and a second bearing bush 802, the first bearing bush 801 is disposed near the housing 50 (e.g. the second bearing seat 52), the second bearing bush 802 is disposed near the second portion 22, and the structural compositions of the first bearing bush 801 and the second bearing bush 802 are identical. The first bearing pads 801 and the second bearing pads 802 are arranged in the direction of the first axis 11 of the first shaft body 10 with a gap between the first bearing pads 801 and the second bearing pads 802.

Fig. 4 shows a perspective view of the first bearing shell, please refer to fig. 1 to fig. 5, the first bearing shell 801 is provided with a first limiting structure 8011, the first limiting structure 8011 is located at an end of the first bearing shell 801, and the first limiting structure 8011 is fastened to the first portion 21; the other end of the first bush 801 is provided with a first bottom surface 8012. The first partial limit structure 8011 protrudes from the first exhaust end face 202, that is, the end face of the first limit structure 8011 away from the second part 22 protrudes from the first exhaust end face 202, so that a gap L1 exists between the first exhaust end face 202 and the second bearing seat 52. The first bump guard structure 91 includes a first limit structure 8011, and when the first portion 21 approaches the housing 50 (e.g., the second bearing seat 52), the first limit structure 8011 abuts against the housing 50 (e.g., the second bearing seat 52), so that the first exhaust end surface 202 and the housing 50 (e.g., the second bearing seat 52) have a gap therebetween without collision. It should be noted that the hardness of the material of the housing 50 (e.g., the second bearing seat 52) and the hardness of the material of the first portion 21 are both higher than the hardness of the material of the first bearing bush 801. It is understood that in other embodiments of the present invention, the first limiting structure 8011 may protrude entirely from the first exhaust end face 202.

Referring to fig. 1 to 3, the second bearing bush 802 is provided with a second limiting structure 8021, the second limiting structure 8021 is located at an end portion of the second bearing bush 802 far from the first bearing bush 801, and the second limiting structure 8021 is clamped and fixed with the first portion 21; the other end of the second bearing bush 802 is provided with a second bottom surface 8022, and the first bottom surface 8012 is close to the second bottom surface 8022. The second limiting structure 8021 does not protrude from the first air suction end surface 201, so that the first air suction end surface 201 is attached to the second air suction end surface 203. It will be appreciated that in other embodiments of the present invention, at least a portion of the second limit structure 8021 protrudes from the first suction end surface 201 to provide a slight gap between the first suction end surface 201 and the second suction end surface 203, and the protruding length may be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc.

Referring to fig. 1 to 6, the second transmission member 82 is structurally related to the first transmission member 81. The second driving medium 82 is provided with a third limiting structure 8201 and a fourth limiting structure 8202 which are oppositely arranged, the third limiting structure 8201 and the fourth limiting structure 8202 are respectively clamped and fixed with the third portion 41, the third limiting structure 8201 is close to the shell 50 (such as the second bearing seat 52), and the fourth limiting structure 8202 is close to the fourth portion 42. The third limiting structure 8201 does not protrude from the third exhaust end surface 402, and a part of the fourth limiting structure 8202 protrudes from the third suction end surface 401, that is, the end surface of the fourth limiting structure 8202 close to the fourth portion 42 protrudes from the third suction end surface 401, and the protruding length is L2, so that the third suction end surface 401 and the fourth suction end surface 403 are not attached to each other and have a small gap, and interference between the first portion 21 and the fourth portion 42 and interference between the second portion 22 and the third portion 41 are avoided. It is understood that in other embodiments of the present invention, at least a portion of the third position-limiting structure 8201 protrudes from the third exhaust end surface 402 to avoid the third portion 41 colliding with the housing 50 (e.g., the second bearing seat 52); in other embodiments of the present invention, the fourth position-limiting structure 8202 may also be protruded from the third suction end surface 401.

Referring to fig. 1 to 7, the third transmission member 83 is structurally related to the first transmission member 81. The third transmission member 83 is provided with a fifth limiting structure 8301 and a sixth limiting structure 8302 which are oppositely arranged, the fifth limiting structure 8301 and the sixth limiting structure 8302 are respectively clamped and fixed with the fourth portion 42, the fifth limiting structure 8301 is close to the housing 50 (for example, the first bearing seat 51), and the sixth limiting structure 8302 is close to the third portion 41. A portion of the fifth limiting structure 8301 protrudes from the fourth exhaust end surface 404, that is, an end surface of the fifth limiting structure 8301 far from the third portion 41 protrudes from the fourth exhaust end surface 404, and the protruding length is L4. The second anti-collision structure 92 includes a fifth limiting structure 8301, when the fourth portion 42 approaches the housing 50 (e.g., the first bearing seat 51), the fifth limiting structure 8301 will abut against the housing 50 (e.g., the first bearing seat 51), so that a gap is formed between the fourth exhaust end surface 404 and the housing 50 (e.g., the first bearing seat 51) without collision. It should be noted that the hardness of the material of the housing 50 (e.g., the first bearing seat 51) and the hardness of the material of the fourth portion 42 are both higher than the hardness of the material of the fifth limiting structure 8301. It is understood that in other embodiments of the present invention, the fifth limit structure 8301 may also be protruded from the first exhaust end surface 202.

Part of the sixth limiting structure 8302 protrudes from the fourth suction end surface 403, that is, the end surface of the sixth limiting structure 8302 close to the third portion 41 protrudes from the fourth suction end surface 403, the protruding length is L3, and the sizes of L3 and L2 are equal, so that the third suction end surface 401 and the fourth suction end surface 403 are not attached to each other and have a slight gap, so as to avoid interference between the first portion 21 and the fourth portion 42 and interference between the second portion 22 and the third portion 41. It is understood that in other embodiments of the present invention, the sixth stop 8302 may also protrude from the fourth suction end surface 403.

It should be noted that, in other embodiments of the present invention, an end surface of the fourth limiting structure 8202 close to the fourth portion 42 may protrude from the third suction end surface 401, and an end surface of the sixth limiting structure 8302 close to the third portion 41 may not protrude from the fourth suction end surface 403. In other embodiments of the present invention, an end surface of the sixth limiting structure 8302 close to the third portion 41 may protrude from the fourth suction end surface 403, and an end surface of the fourth limiting structure 822 close to the fourth portion 42 may not protrude from the third suction end surface 401.

Fig. 8 shows a schematic view of a part of a second compressor provided by the embodiment of the present invention, and compared with the compressor shown in fig. 1, the compressor shown in fig. 8 is different in that: 1. the first portion 21 is sleeved on the first shaft 10, and the first portion 21 is fixedly connected with the first shaft 10; 2. the first transmission piece is omitted; 3. the first crash structure 91 is not identical.

Referring to fig. 8, the first anti-collision structure 91 is an annular structure, the second bearing housing 52 is provided with a first accommodating cavity 521 for mounting the second end portion 13, and the first anti-collision structure 91 is disposed in the first accommodating cavity 521, preferably at a cavity opening of the first accommodating cavity 521. The first bump guard 91 protrudes from the first receiving chamber 521 by a length corresponding to a tooth flank clearance between the first portion 21 and the third portion 41, where the tooth flank clearance is 0.03 mm to 0.05 mm. When the first portion 21 is close to the casing 50 (e.g., the second bearing seat 52), the first anti-collision structure 91 may abut against the casing 50 (e.g., the second bearing seat 52) so that the first exhaust end surface 202 and the casing 50 (e.g., the second bearing seat 52) have a gap therebetween without collision. Further, since the first exhaust end surface 202 has an oil film and the hardness of the material of the first collision avoidance structure 91 is less than that of the material of the first portion 21, no scratch is generated even if the first collision avoidance structure 91 abuts against the first portion 21.

The material of the first impact structure 91 may be copper, or may be other softer materials, such as peek material, etc., only that the hardness of the material of the first impact structure 91 is less than the hardness of the material of the first portion 21 and the hardness of the material of the shell 50. The shape of the first anti-collision structure 91 is not specifically limited in the embodiment of the present invention, and can be selected according to actual needs.

It is understood that the first crash structure 91 may also be entirely protruded from the first receiving cavity 521. Furthermore, the first crash structure 91 may also be disposed at other locations, such as: the surface of the housing 50, the surface of the first portion 21, the space between the first portion 21 and the housing 50, etc., only need to satisfy that at least part of the first crash structure 91 is disposed between the first portion 21 and the housing 50.

As an example, referring to fig. 9, the first anti-collision structure 91 is composed of a first boss 911 and a second boss 912, and the first boss 911 and the second boss 912 are symmetrically disposed about the first shaft 10. The first boss 911 and the second boss 912 are fixed on the surface of the second bearing seat 52 by means of bonding or welding, and the material of the first boss 911 and the second boss 912 may be copper, peek material, and other materials with ideal impact resistance and buffering performance. In a direction along the first axis 11 of the first shaft body 10, a portion of the first boss 911 can be projected on the first exhaust end face 202, and a portion of the second boss 912 can be projected on the first exhaust end face 202.

When the first portion 21 approaches the second bearing seat 52, the first boss 911 and the second boss 912 are abutted against the first portion 21 to avoid collision of the first portion 21 with the second bearing seat 52. It is understood that, in the direction along the first axis 11 of the first shaft body 10, the first bosses 911 may be entirely projected on the first exhaust end surface 202, and the second bosses 912 may be entirely projected on the first exhaust end surface 202.

For example, referring to fig. 10, the first anti-collision structure 91 is sleeved on the first shaft 10, and the first anti-collision structure 91 is disposed between the first portion 21 and the second bearing seat 52. Since the first portion 21 and the second bearing housing 52 are separated by the first crash structure 91, the first portion 21 and the second bearing housing 52 do not collide, and the distance between the first portion 21 and the second bearing housing 52 is not smaller than the thickness of the first crash structure 91 in the direction of the first axis 11 of the first shaft body 10. The first crash structure 91 is, for example, a ring structure, and the material of the first crash structure 91 may be a material with desirable impact resistance and cushioning performance, such as copper and peek material. It is understood that the first crash structure 91 may also be disposed at the first exhaust end surface 202.

It should be noted that the structural composition of the second crash structure 92 can also refer to the first crash structure 91 in fig. 8 to 10.

As an example, fig. 11 shows a partial schematic view of a third compressor provided in an embodiment of the present invention, which is different from the second compressor provided in the embodiment of the present invention in that: 1. the second crush boxes 92 are not identical; 2. the fifth limiting structure 8301 does not protrude from the fourth exhaust end surface 404.

The second anti-collision structure 92 is an annular structure, the first bearing seat 51 is provided with a second accommodating cavity 511 for installing the third end portion 32, and the second anti-collision structure 92 is disposed in the second accommodating cavity 511, preferably at a cavity opening of the second accommodating cavity 511. A portion of the second bump guard structure 92 protrudes from the second cavity 511 by a length that is equal to the flank clearance between the second portion 22 and the fourth portion 42, which is 0.03 mm to 0.05 mm. When the fourth portion 21 approaches the housing 50 (e.g., the first bearing seat 51), the second anti-collision structure 92 may abut against the housing 50 (e.g., the first bearing seat 51), so that the fourth exhaust end surface 404 and the housing 50 (e.g., the first bearing seat 51) have a gap therebetween without collision. Further, since the fourth discharge end surface 404 has an oil film and the hardness of the material of the second bump guard structure 92 is less than the hardness of the material of the fourth portion 42, no scratch is generated even if the second bump guard structure 92 abuts against the fourth portion 42.

The material of the second bump guard structure 92 may be copper, or other softer materials, such as peek material, so long as the hardness of the material of the second bump guard structure 92 is less than the hardness of the material of the first portion 21 and the hardness of the material of the shell 50. The shape of the second anti-collision structure 92 is not specifically limited in the embodiment of the present invention, and can be selected according to actual needs.

The compressor 100 in one or more of the above embodiments may be applied to an air conditioner.

Embodiments of the present invention also provide an air conditioner including the compressor 100 as defined in combination with one or more of the above embodiments.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and a part which is not described in detail in a certain embodiment may refer to the detailed descriptions in the other embodiments, and is not described herein again.

The compressor and the air conditioner provided by the embodiment of the invention are described in detail, the principle and the embodiment of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, 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 invention.

Claims

1. A compressor, characterized in that the compressor comprises:

a housing;

a first shaft body carrying the first part and the second part; and

2. The compressor of claim 1, wherein the first anti-collision structure is disposed on a surface of the shell, and at least a portion of the first anti-collision structure is projectable on an end surface of the first portion away from the second portion in a direction along the first axis.

3. The compressor of claim 1, wherein the first anti-collision structure is disposed on an end surface of the first portion remote from the second portion.

4. The compressor of claim 1, wherein the first anti-collision structure is sleeved on the first shaft, and the first anti-collision structure is disposed between an end of the first portion away from the second portion and the housing.

5. The compressor of claim 1, wherein the first portion is sleeved on the first shaft, and a first transmission member is disposed between an inner surface of the first portion and an outer surface of the first shaft;

the first anti-collision structure comprises the limiting structure.

6. A compressor according to claim 5, wherein the first drive member comprises at least one bearing shell.

7. The compressor of claim 1, wherein a first receiving cavity is formed in the housing for receiving the first shaft, the first anti-collision structure is disposed in the first receiving cavity, and the first anti-collision structure protrudes from the first receiving cavity.

8. The compressor of claim 7, wherein the first anti-collision structure is an annular structure, and the first shaft is sleeved with the first anti-collision structure.

9. The compressor of claim 1, wherein no anti-collision structure is disposed between an end of the second portion distal from the first portion and the housing.

10. The compressor of claim 1, further comprising: and the motor is in driving connection with the first shaft body so as to drive the first part and the second part to rotate along the first axis.

11. The compressor of any one of claims 1 to 10, further comprising:

a second shaft carrying the third portion and the fourth portion.

12. The compressor of claim 11, further comprising:

13. The compressor of claim 12, wherein no anti-collision structure is disposed between an end of the third portion distal from the fourth portion and the shell.

14. The compressor of claim 11, wherein the third portion and the fourth portion are both sleeved on the second shaft body, a second transmission member is disposed between an inner surface of the third portion and an outer surface of the second shaft body, and a third transmission member is disposed between an inner surface of the fourth portion and the outer surface of the second shaft body.

15. A compressor according to claim 14, wherein the end surface of the second transmission member adjacent the housing does not project beyond the end surface of the third portion remote from the fourth portion.

16. The compressor of claim 14, wherein an end surface of the third transmission member adjacent the housing projects from an end surface of the fourth portion remote from the third portion.

17. An air conditioner characterized by comprising the compressor as set forth in any one of claims 1 to 16.