Compressors and air conditioners

Abstract

The present invention discloses a compressor and an air conditioner. The compressor includes a housing, a first rotor, a first shaft and a first anti-collision structure. The first rotor can rotate in the housing along a first axis. The first rotor includes a first part and a second part with opposite thread rotation directions. The material of the first part is a metal material, and the material of the second part is a non-metallic material. At least part of the first anti-collision structure is arranged between the first part and the housing, and the hardness of the material of the housing and the hardness of the material of the first part are both higher than the hardness of the material of the first anti-collision structure to avoid collision between the first part and the housing. Compared with the traditional twin-screw compressor, the compressor of the present invention completely eliminates the thrust bearing under the premise of ensuring normal operation, and has the advantages of compact structure, energy saving, simplified assembly and low working noise.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor and an air conditioner. Background Art

[0002] The compressor is the core component of the refrigeration system, which is closely related to the service life and refrigeration effect of the refrigeration system. The working principle of the compressor is: sucking in low-temperature and low-pressure refrigerant gas, then compressing the refrigerant gas, and then discharging high-temperature and high-pressure refrigerant liquid, thereby realizing the refrigeration cycle of compression, condensation, expansion and heat absorption and evaporation. There are many types of compressors. Screw compressors are widely used in the field of refrigeration and air conditioning due to their high reliability. Screw compressors include single-screw compressors and twin-screw compressors, among which twin-screw compressors are the most widely used.

[0003] A pair of screw rotors meshing with each other and rotating in opposite directions are arranged in parallel in the shell of a conventional twin-screw compressor, corresponding to a male screw rotor and a female screw rotor. The male screw rotor and the female screw rotor are respectively provided with an intake end and an exhaust end, the intake end is connected to the intake port of the twin-screw compressor, and the exhaust end is connected to the exhaust port of the twin-screw compressor. The purpose of suction, compression and exhaust is achieved by the rotational movement 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 gas, the gas pressure in the direction from the intake port of the compressor to the exhaust port is from low to high, so the pressure of suction and exhaust is different, thereby forming an axial force from the exhaust end to the intake end on both the male screw rotor and the female screw rotor. In order to limit the axial force to reduce the operating load of the twin-screw compressor, a thrust bearing is usually provided on at least one side of the male screw rotor and at least one side of the female screw rotor to bear the axial force, 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 force.

[0004] Therefore, the conventional twin-screw compressor has a large number of bearings, including at least two thrust bearings and at least four radial bearings, which occupy a large space, resulting in the conventional twin-screw compressor having the disadvantages of being large in size and having high operating power consumption. Summary of the invention

[0005] In view of the shortcomings of the prior art, an embodiment of the present invention provides a compressor and an air conditioner, which aims to omit the thrust bearing in the traditional twin-screw compressor while ensuring the normal operation of the compressor, so as to reduce the operating power consumption of the twin-screw compressor and reduce the size of the twin-screw compressor.

[0006] In a first aspect, the present invention provides a compressor, comprising:

[0007] case;

[0008] a first rotor capable of rotating in the housing along a first axis, the first rotor comprising a first portion and a second portion with opposite thread directions, the first portion being made of a metal material, and the second portion being made of a non-metal material;

[0009] A first shaft body, carrying the first part and the second part; and

[0010] a first anti-collision structure, at least a portion of which is disposed between the first portion and the shell;

[0011] Wherein, the hardness of the material of the shell and the hardness of the material of the first part are both higher than the hardness of the material of the first anti-collision structure.

[0012] In an optional implementation of the present invention, the first anti-collision structure is arranged on the surface of the shell, and along the direction of the first axis, at least a part of the first anti-collision structure can be projected onto the end surface of the first part away from the second part.

[0013] In an optional implementation manner of the present invention, the first anti-collision structure is arranged on an end surface of the first part away from the second part.

[0014] 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 arranged between an end of the first part away from the second part and the shell.

[0015] In an optional embodiment of the present invention, the first part is sleeved on the first shaft, and a first transmission member is provided between the inner surface of the first part and the outer surface of the first shaft;

[0016] The first transmission member is provided with a limiting structure, and at least part of the limiting structure protrudes from the end surface of the first part away from the second part;

[0017] The first anti-collision structure includes the limiting structure.

[0018] In an optional implementation manner of the present invention, the first transmission member includes at least one bearing shell.

[0019] In an optional implementation of the present invention, a first accommodating cavity for mounting the first shaft body is provided on the shell, the first anti-collision structure is arranged in the first accommodating cavity, and the first anti-collision structure protrudes from the first accommodating cavity.

[0020] In an optional implementation manner of the present invention, the first anti-collision structure is an annular structure, and the first anti-collision structure is sleeved on the first shaft.

[0021] In an optional implementation manner of the present invention, no anti-collision structure is provided between an end of the second part away from the first part and the shell.

[0022] In an optional implementation manner of the present invention, the compressor further comprises: a motor drivingly connected to the first shaft to drive the first part and the second part to rotate along the first axis.

[0023] In an optional embodiment of the present invention, the compressor further comprises:

[0024] a second rotor capable of rotating in the housing along a second axis, comprising a third portion and a fourth portion with opposite thread directions, wherein the third portion is made of a non-metallic material and is configured to mesh with the first portion, and the fourth portion is made of a metallic material and is configured to mesh with the second portion; and

[0025] The second shaft carries the third part and the fourth part.

[0026] In an optional embodiment of the present invention, the compressor further comprises:

[0027] a second anti-collision structure, at least a portion of the second anti-collision structure being disposed between the fourth portion and the shell;

[0028] The hardness of the material of the shell and the hardness of the material of the fourth part are both higher than the hardness of the material of the second anti-collision structure.

[0029] In an optional implementation manner of the present invention, no anti-collision structure is provided between an end of the third part away from the fourth part and the shell.

[0030] In an optional embodiment of the present invention, the third part and the fourth part are both sleeved on the second shaft, a second transmission member is provided between the inner surface of the third part and the outer surface of the second shaft, and a third transmission member is provided between the inner surface of the fourth part and the outer surface of the second shaft.

[0031] In an optional implementation manner of the present invention, an end surface of the second transmission member close to the housing does not protrude beyond an end surface of the third portion away from the fourth portion.

[0032] In an optional implementation manner of the present invention, an end surface of the third transmission member close to the housing protrudes beyond an end surface of the fourth portion away from the third portion.

[0033] In a second aspect, the present invention provides an air conditioner, comprising the compressor described in any one of the first aspects.

[0034] The present 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, wherein the first rotor can rotate along a first axis in the shell, the first shaft body is used to carry the first rotor, and the first rotor comprises a first part and a second part which are symmetrically arranged and have opposite rotation directions, wherein the material of the first part is a metal material, and the material of the second part is a non-metallic material, and the non-metallic material may be, for example, a peek material or other non-metallic material with good impact resistance and buffering performance. Compared with a traditional twin-screw compressor, the compressor omits a thrust bearing, saves the installation space of the thrust bearing, thereby reducing the volume of the compressor, and reducing the operating power consumption of the compressor, which is beneficial to the compactness of the structure of the compressor.

[0035] The first anti-collision structure is used to prevent the first part from colliding with the shell. During the actual operation of the compressor, when the first part approaches the shell due to the action of the axial force, the first anti-collision structure will separate the first part from the shell, so that a gap is always maintained between the first part and the shell, effectively preventing the first part and / or the shell from being damaged due to collision, so as to eliminate the negative impact of the collision on the service life and working performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0037] Figure 1 A partial structural schematic diagram of a first compressor provided in an embodiment of the present invention.

[0038] Figure 2 for Figure 1 Schematic diagram of the cooperation between 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.

[0039] Figure 3 for Figure 1 Schematic diagram of the structure of the first transmission member.

[0040] Figure 4 This is a three-dimensional rendering of the first bearing.

[0041] Figure 5 for Figure 1 A partial enlarged schematic diagram of the dotted circle at position A in the compressor shown.

[0042] Figure 6 for Figure 1 A partial enlarged schematic diagram of the dotted circle at position B in the compressor shown.

[0043] Figure 7 for Figure 1A partial enlarged schematic diagram of the dotted circle at position C in the compressor shown.

[0044] Figure 8 A partial structural schematic diagram of a second compressor provided in an embodiment of the present invention.

[0045] Fig. 9 A diagram showing a state in which a first anti-collision structure is in contact with a first portion according to an embodiment of the present invention.

[0046] Fig.10 A diagram showing a state in which a first anti-collision structure is in contact with a first portion according to another embodiment of the present invention.

[0047] Fig.11 A partial structural schematic diagram of a third compressor provided in an embodiment of the present invention.

[0048] 10. first shaft body; 11. first axis line; 12. first end portion; 13. second end portion;

[0049] 20, first rotor; 21, first part; 22, second part; 201, first air intake end face; 202, first air discharge end face; 203, second air intake end face; 204, second air discharge end face; 211, first spiral blade; 221, second spiral blade;

[0050] 30. second shaft body; 31. second axis line; 32. third end portion; 33. fourth end portion;

[0051] 40, second rotor; 41: third part; 42, fourth part; 401, third air intake end face; 402, third air discharge end face; 403, fourth air intake end face; 404, fourth air discharge end face; 411, third spiral blade; 421, fourth spiral blade;

[0052] 50, housing; 51, first bearing seat; 52, second bearing seat; 501, first exhaust port; 502, second exhaust port; 503, air intake port; 521, first accommodating chamber; 511, second accommodating chamber;

[0053] 60. Motor;

[0054] 71. a first radial bearing; 72. a second radial bearing;

[0055] 81, first transmission member; 82, second transmission member; 83, third transmission member; 801, first bearing; 802, second bearing; 8011, first limiting structure; 8012, first bottom surface; 8021, second limiting structure; 8022, second bottom surface; 8201, third limiting structure; 8202, fourth limiting structure; 8301, fifth limiting structure; 8302, sixth limiting structure;

[0056] 91, first anti-collision structure; 92, second anti-collision structure; 911, first boss; 912, second boss;

[0057] 100. Compressor. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0059] Reference to "embodiment" or "implementation method" herein means that the specific features, structures or characteristics described in conjunction with the embodiment or implementation method may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on this, an embodiment of the present invention is provided, which is described in detail below.

[0060] As used in the present invention, “first”, “second”, etc. are used to distinguish different objects rather than to describe a specific order.

[0061] As used herein, the words “including,” “having,” “having” and any variations thereof, are intended to cover a non-exclusive inclusion.

[0062] As used herein, "plurality" means more than two.

[0063] The embodiment of the present invention provides a compressor. Figure 1 and Figure 2 The compressor 100 includes a first shaft 10, a first rotor 20, a second shaft 30, a second rotor 40 and a housing 50. The housing 50 can accommodate the first shaft 10, the first rotor 20, the second shaft 30 and the second rotor 40. The first shaft 10 and the second shaft 30 are arranged in parallel with each other in the housing 50, the first rotor 20 is arranged on the first shaft 10, and the second rotor 40 is arranged on the second shaft 30.

[0064] The first rotor 20 is meshed with the second rotor 40, wherein the first rotor 20 is a male rotor and the second rotor 40 is a female rotor. It is understandable that the first rotor 20 may be a female rotor and the second rotor 40 may be a male rotor.

[0065] The first rotor 20 as a male rotor can be understood as the first rotor 20 being an active rotor, and the second rotor 40 as a female rotor can be understood as the second rotor 40 being a driven rotor. The first rotor 20 can be transmission-connected with a driving assembly so that the first rotor 20 can be driven to rotate by the driving assembly, and the driving assembly can be, for example, a motor 60. When the first rotor 20 rotates, the second rotor 40 is driven to rotate together through meshing, and the driving assembly can be, for example, a motor 60.

[0066] The first shaft body 10 has a first end 12 and a second end 13. The first rotor 20 is carried by the first shaft body 10, and 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 the first radial bearing 71 and the second radial bearing 72 for bearing radial force are respectively configured at both ends of the first shaft body 10, and the first radial bearing 71 and the second radial bearing 72 are exemplified as cylindrical roller bearings. The motor 60 is connected to the first shaft body 10 in a transmission manner to drive the first shaft body 10 and the first rotor 20 to rotate along the first axis 11. The first radial bearing 71 is close to the first end 12, and the second radial bearing 72 is close to the second end 13, and the first radial bearing 71 and the second radial bearing 72 are both sleeved on the first shaft body 10.

[0067] The first rotor 20 has at least two parts. For example, the first rotor 20 includes a first part 21 and a second part 22 with opposite thread directions. The first part 21 and the second part 22 can rotate around the first axis 11 in the housing 50. The material of the first part 21 is a metal material, and examples of metal materials are forged steel, cast iron, copper, etc. The material of the second part 22 is a non-metallic material, and examples of non-metallic materials are peek materials. The first part 21 is sleeved on the first shaft body 10, and the first part 21 is slidably connected to the first shaft body 10, and the second part 22 is integrally formed with the first shaft body 10, that is, the material of the first shaft body 10 is the same as that of the second part 22. It can be understood that in other embodiments of the present invention, the first part 21 can also be integrally formed with the first shaft body 10, and the second shaft body can be sleeved on the first shaft body 10; it is also possible that both the first part 21 and the second part 22 are sleeved on the first shaft body 10, but the first part 21 and the second part 22 cannot be integrally formed with the first shaft body 10.

[0068] The first rotor 20 has a spiral blade, which can also be called a male blade. The first rotor 20 includes a first spiral blade 211 located at the first part 21 and a second spiral blade 221 located at the second part 22. The number of the first spiral blade 211 can be multiple, and the number of the second spiral blade 221 can be multiple. The first spiral blade 211 and the second spiral blade 221 are configured to have opposite spiral directions, so that the thread rotation directions of the first part 21 and the second part 22 are opposite.

[0069] The end surface of the first part 21 close to the second part 22 is the first air intake end surface 201, and the end surface of the first part 21 away from the second part 22 is the first exhaust end surface 202. The end surface of the second part 21 close to the first part 21 is the second air intake end surface 203, and the end surface of the second part 22 away from the first part 21 is the second exhaust end surface 204. The first air intake end surface 201 is in contact with the second air intake end surface 203. It can be understood that in other embodiments of the present invention, the first air intake end surface 201 and the second air intake end surface 203 may not be in contact with each other but have a small gap, and the gap may be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc.

[0070] A first transmission member 81 is provided between the inner surface of the first portion 21 and the outer surface of the first shaft body 10. The first transmission member 81 includes at least one sliding bearing and / or at least one rolling bearing. The first portion 21 is a hollow structure. The first portion 21 is sleeved on the first transmission member 81. The first transmission member 81 and the first portion 21 are sleeved on the first shaft body 10 together, so that the first portion 21 and the first transmission member 81 can rotate around the first shaft body 10 together.

[0071] 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, therefore, radial bearings for bearing radial forces do not need to be configured at both ends of the second shaft body 30, thereby effectively reducing the number of bearings and operating energy consumption of the compressor 100, and facilitating the compactness of the structure of the compressor 100. The second shaft body 30 is parallel to the first shaft body 10, and the second axis 31 is parallel to the first axis 11. The second rotor 40 is sleeved on the second shaft body 30, and the second rotor 40 is slidably connected to the second shaft body 30.

[0072] The second rotor 40 has at least two parts, and the second rotor 40 includes a third part 41 and a fourth part 42 with opposite screw directions, and the third part 41 and the fourth part 42 can rotate in the housing 50 around the second axis 31. The material of the third part 41 is a non-metallic material, and an example of the non-metallic material is a peek material; the material of the fourth part 42 is a metal material, and an example of the metal material is forged steel, cast iron, copper, etc. The third part 41 is configured to fit and mesh with the first part 21, and the fourth part 42 is configured to fit and mesh with the second part 22, that is, the materials of the two meshing parts are different, one of which is a metal material and the other is a non-metal material, so as to reduce the working noise of the compressor 100.

[0073] The second rotor 40 has a spiral blade, which can also be called a female blade. The second rotor 40 includes a third spiral blade 411 located in the third part 41 and a fourth spiral blade 421 located in the fourth part 42. The number of the third spiral blade 411 can be multiple, and the number of the fourth spiral blade 421 can be multiple. In the embodiment of the present invention, the first spiral blade 211 and the second spiral blade 221 are configured to have opposite spiral directions, so that the third part 41 and the fourth part 42 have opposite spiral directions.

[0074] The end surface of the third working part 41 close to the fourth working part 42 is the third air suction end surface 401, and the end surface of the third working part 41 away from the fourth working part 42 is the third exhaust end surface 402. The end surface of the fourth working part 42 close to the third working part 41 is the fourth air suction end surface 403, and the end surface of the fourth working part 42 away from the third working part 41 is the fourth exhaust end surface 404. The third air suction end surface 401 and the fourth air suction end surface 403 are not fitted but have a small gap, which can be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc., to ensure that the first part 21 and the fourth part 42 do not interfere with each other, and the second part 22 and the third part 41 do not interfere with each other.

[0075] The third part 41 and the fourth part 42 are both sleeved on the second shaft body 30, and the third part 41 and the fourth part 42 are both slidably connected with the second shaft body 30. The third part 41 is a hollow structure, and a second transmission member 82 is provided between the inner surface of the third part 41 and the second shaft body 30. The third part 41 is sleeved on the second transmission member 82, and the second transmission member 82 is sleeved on the second shaft body 30 together with the third part 41, so that the third part 41 and the second transmission member 82 can rotate around the second shaft body 30 together. The fourth part 42 is a hollow structure, and a third transmission member 83 is provided between the inner surface of the fourth part 42 and the second shaft body 30, and the fourth part 42 is sleeved on the third transmission member 83, and the third transmission member 83 is sleeved on the second shaft body 30 together with the fourth part 42, so that the fourth part 42 and the third transmission member 83 can rotate around the second shaft body 30 together. The second transmission member 82 and the third transmission member 83 respectively include at least one sliding bearing and / or at least one rolling bearing.

[0076] 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 arranged in parallel between the first bearing seat 51 and the second bearing seat 52, and the first shaft body 10 and the second shaft body 30 are arranged in parallel between the first bearing seat 51 and the second bearing seat 52, and the first bearing seat 51 is arranged on the same side as the motor 60. The first bearing seat 51 is used to carry the first radial bearing 71, the second bearing seat 52 is used to carry the second radial bearing 72, and the first bearing seat 51 and the second bearing seat 52 are also used to carry 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 transmission-connected with the motor 60, and the second end 13 is rotatably arranged in the second bearing seat 52, so that the first part 21 and the second part 22 are restricted between the first bearing seat 51 and the second bearing seat 52. The third end 32 of the second shaft body 30 is fixed to the first bearing seat 51 , and the fourth end 33 of the second shaft body 30 is fixed to the second bearing seat 52 , so that the third portion 41 and the fourth portion 42 are confined between the first bearing seat 51 and the second bearing seat 52 .

[0077] The housing 50 is provided with a first exhaust port 501, a second exhaust port 502 and an air intake port 503. The first exhaust port 501 and the second exhaust port 502 are respectively located at two ends of the housing 50 along the first axis 11 of the first shaft body 10, and the first exhaust port 501 is connected with the first exhaust end face 202 and the third exhaust end face 402, and the second exhaust port 502 is connected with the second exhaust end face 204 and the fourth exhaust end face 404. The air intake port 503 is located in the middle position of the housing 50 along the first axis 11 of the first shaft body 10, and the air intake port 503 is connected with the first air intake end face 201, the second air intake end face 203, the third air intake end face 401 and the fourth air intake end face 403.

[0078] Since the conventional twin-screw compressor has a large number of bearings, including at least two thrust bearings, and the thrust bearings occupy a large space, the conventional twin-screw compressor has the disadvantages of being large in size and having high operating power consumption, and is not conducive to reducing the manufacturing cost of the twin-screw compressor and simplifying the assembly process of the twin-screw compressor. The twin-screw compressor of the embodiment of the present application omits the thrust bearing, and has the advantages of compact structure, low operating power consumption, and low operating noise. In the compressor 100 of the embodiment of the present application, when the first rotor 20 and the second rotor 40 mesh and rotate, the first part 21 generates a first axial force, and the second part 22 generates a second axial force. Since the first part 21 and the second part 22 are symmetrically arranged and have opposite rotation directions, the first axial force and the second axial force can be partially offset, and the unoffset axial force will cause the first part 21 and the second part 22 to collide with the shell 50. The material of the second part 22 is a non-metallic material such as peek material, which has ideal impact resistance and buffering performance. Therefore, there will be no adverse consequences when the second part 22 collides with the shell 50; however, the material of the first part 21 is a metal material, which has a high hardness. When the first part 21 collides with the shell 50, problems such as damage to the shell 50 / first part 21 may occur, thereby negatively affecting the working performance and service life of the compressor 100. Therefore, an anti-collision structure needs to be set between the first part 21, the shell 50, and / or the first part 21 and the shell 50 to avoid the first part 21 colliding with the shell 50. Similarly, an anti-collision structure needs to be set between the fourth part 42, the shell 50, and / or the fourth part 42 and the shell 50 to avoid the fourth part 42 colliding with the shell 50.

[0079] It should be noted that there is no need to set an anti-collision structure between the second part 22 and the housing 50, but an anti-collision structure may be set. Similarly, there is no need to set an anti-collision structure between the third part 41 and the housing 50, but an anti-collision structure may be set.

[0080] As an example, continue to see Figure 1 The compressor 100 includes a first anti-collision structure 91 and a second anti-collision structure 92 . The first anti-collision structure 91 is disposed between the first portion 21 and the shell 50 , and the second anti-collision structure is disposed between the fourth portion 42 and the shell 50 .

[0081] Figure 3 The structure of the first transmission member 81 is shown in FIG. Figures 1 to 3The first transmission member 81 includes a first bearing bush 801 and a second bearing bush 802. The first bearing bush 801 is arranged close to the housing 50 (e.g., the second bearing seat 52), and the second bearing bush 802 is arranged close to the second portion 22. The first bearing bush 801 and the second bearing bush 802 have the same structural composition. The first bearing bush 801 and the second bearing bush 802 are arranged along the first axis 11 of the first shaft body 10, and there is a gap between the first bearing bush 801 and the second bearing bush 802.

[0082] Figure 4 A three-dimensional effect diagram of the first bearing is shown, see Figures 1 to 5 The first bearing bush 801 is provided with a first limiting structure 8011, which is located at one end of the first bearing bush 801 and is fixedly engaged with the first portion 21; the other end of the first bearing bush 801 is provided with a first bottom surface 8012. The first limiting structure 8011 of the first portion protrudes from the first exhaust end surface 202, that is, the end surface of the first limiting structure 8011 away from the second portion 22 protrudes from the first exhaust end surface 202, so that there is a gap L1 between the first exhaust end surface 202 and the second bearing seat 52. The first anti-collision structure 91 includes the first limiting structure 8011. When the first portion 21 approaches the housing 50 (for example, the second bearing seat 52), the first limiting structure 8011 will abut against the housing 50 (for example, the second bearing seat 52), so that there is a gap between the first exhaust end surface 202 and the housing 50 (for example, the second bearing seat 52) ​​without collision. It should be noted that the hardness of the material of the housing 50 (such as 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 understandable that in other embodiments of the present invention, the first limiting structure 8011 may also protrude entirely from the first exhaust end surface 202.

[0083] See also Figures 1 to 3 , the second bearing 802 is provided with a second limiting structure 8021, the second limiting structure 8021 is located at the end of the second bearing 802 away from the first bearing 801, and the second limiting structure 8021 is fixedly connected with the first part 21; the other end of the second bearing 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 suction end surface 201, so that the first suction end surface 201 and the second suction end surface 203 fit together. It can be understood that in other embodiments of the present invention, at least part of the second limiting structure 8021 protrudes from the first suction end surface 201, so that there is a small gap between the first suction end surface 201 and the second suction end surface 203, and the protruding length can be, for example, 0.1 mm, 0.2 mm, 0.3 mm, etc.

[0084] See also Figures 1 to 6, the structural composition of the second transmission member 82 refers to the first transmission member 81. The second transmission member 82 is provided with a third limiting structure 8201 and a fourth limiting structure 8202 which are arranged opposite to each other. The third limiting structure 8201 and the fourth limiting structure 8202 are respectively fixed with the third part 41, the third limiting structure 8201 is close to the housing 50 (for example, the second bearing seat 52), and the fourth limiting structure 8202 is close to the fourth part 42. The third limiting structure 8201 does not protrude from the third exhaust end face 402, and part of the fourth limiting structure 8202 protrudes from the third intake end face 401, that is, the end face of the fourth limiting structure 8202 close to the fourth part 42 protrudes from the third intake end face 401, and the protruding length is L2, so that the third intake end face 401 and the fourth intake end face 403 are not fitted but have a small gap, so as to avoid interference between the first part 21 and the fourth part 42 and between the second part 22 and the third part 41. It can be understood that in some other embodiments of the present invention, at least part of the third limiting structure 8201 protrudes from the third exhaust end face 402 to avoid collision between the third part 41 and the shell 50 (for example, the second bearing seat 52); in some other embodiments of the present invention, the fourth limiting structure 8202 may also protrude entirely from the third intake end face 401.

[0085] See also Figures 1 to 7 , the structural composition of the third transmission member 83 refers 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 arranged opposite to each other. The fifth limiting structure 8301 and the sixth limiting structure 8302 are respectively fixed with the fourth part 42 by clamping. 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 part 41. The fifth limiting structure 8301 of the part protrudes from the fourth exhaust end face 404, that is, the end face of the fifth limiting structure 8301 away from the third part 41 protrudes from the fourth exhaust end face 404, and the protruding length is L4. The second anti-collision structure 92 includes the fifth limiting structure 8301. When the fourth part 42 is close to the housing 50 (for example, the first bearing seat 51), the fifth limiting structure 8301 will abut against the housing 50 (for example, the first bearing seat 51), so that there is a gap between the fourth exhaust end face 404 and the housing 50 (for example, the first bearing seat 51) without collision. It should be noted that the hardness of the material of the housing 50 (for example, 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 understandable that in other embodiments of the present invention, the fifth limiting structure 8301 may also protrude entirely from the first exhaust end surface 202.

[0086] Part of the sixth limiting structure 8302 protrudes from the fourth air suction end face 403, that is, the end face of the sixth limiting structure 8302 close to the third part 41 protrudes from the fourth air suction end face 403, and the protruding length is L3, and L3 is equal to L2, so that the third air suction end face 401 and the fourth air suction end face 403 do not fit but have a small gap, so as to avoid interference between the first part 21 and the fourth part 42 and between the second part 22 and the third part 41. It can be understood that in other embodiments of the present invention, the sixth limiting structure 8302 can also protrude from the fourth air suction end face 403.

[0087] It should be noted that, in other embodiments of the present invention, the end surface of the fourth limiting structure 8202 close to the fourth part 42 may protrude from the third air suction end surface 401, and the end surface of the sixth limiting structure 8302 close to the third part 41 may not protrude from the fourth air suction end surface 403. In other embodiments of the present invention, the end surface of the sixth limiting structure 8302 close to the third part 41 may protrude from the fourth air suction end surface 403, and the end surface of the fourth limiting structure 822 close to the fourth part 42 may not protrude from the third air suction end surface 401.

[0088] Figure 8 A partial schematic diagram of a second compressor provided by an embodiment of the present invention is shown. Figure 1 The compressor shown, Figure 8 The differences of the compressor shown are: 1. The first part 21 is sleeved on the first shaft 10, and the first part 21 is fixedly connected to the first shaft 10; 2. The first transmission member is omitted; 3. The first anti-collision structure 91 is different.

[0089] See also Figure 8 , the first anti-collision structure 91 is an annular structure, the second bearing seat 52 is provided with a first accommodating cavity 521 for installing the second end 13, and the first anti-collision structure 91 is arranged in the first accommodating cavity 521, preferably arranged at the cavity mouth of the first accommodating cavity 521. Part of the first anti-collision structure 91 protrudes from the first accommodating cavity 521, and the protruding length is the tooth surface meshing clearance between the first part 21 and the third part 41, and the tooth surface meshing clearance is 0.03 mm to 0.05 mm. When the first part 21 is close to the housing 50 (for example, the second bearing seat 52), the first anti-collision structure 91 will abut against the housing 50 (for example, the second bearing seat 52), so that there is a gap between the first exhaust end face 202 and the housing 50 (for example, the second bearing seat 52) ​​without collision. In addition, since the first exhaust end face 202 has an oil film, and the hardness of the material of the first anti-collision structure 91 is less than the hardness of the material of the first part 21, even if the first anti-collision structure 91 abuts against the first part 21, no scratches will be generated.

[0090] The material of the first anti-collision structure 91 can be copper, or other soft materials, such as peek material, etc., as long as the hardness of the material of the first anti-collision structure 91 is less than the hardness of the material of the first part 21 and the hardness of the material of the shell 50. The embodiment of the present invention does not specifically limit the shape of the first anti-collision structure 91, and it can be selected according to actual needs.

[0091] It is understandable that the first anti-collision structure 91 may also be completely protruded from the first accommodating cavity 521. In addition, the first anti-collision structure 91 may also be disposed at other locations, such as: the surface of the housing 50, the surface of the first portion 21, between the first portion 21 and the housing 50, etc., as long as at least part of the first anti-collision structure 91 is disposed between the first portion 21 and the housing 50.

[0092] As an example, see 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 arranged about the first shaft body 10. The first boss 911 and the second boss 912 are fixed to the surface of the second bearing seat 52 by bonding or welding. The materials of the first boss 911 and the second boss 912 can be copper, peek material, and other materials with ideal impact resistance and buffering performance. In the direction along the first axis 11 of the first shaft body 10, part of the first boss 911 can be projected on the first exhaust end face 202, and part of the second boss 912 can be projected on the first exhaust end face 202.

[0093] When the first portion 21 is close to the second bearing seat 52, the first boss 911 and the second boss 912 are both in contact with the first portion 21 to prevent the first portion 21 from colliding with the second bearing seat 52. It can be understood that in the direction along the first axis 11 of the first shaft body 10, the first boss 911 can be completely projected on the first exhaust end face 202, and the second boss 912 can be completely projected on the first exhaust end face 202.

[0094] As an example, see Fig.10 , the first anti-collision structure 91 is sleeved on the first shaft body 10, and the first anti-collision structure 91 is arranged between the first part 21 and the second bearing seat 52. Since the first part 21 and the second bearing seat 52 are separated by the first anti-collision structure 91, the first part 21 and the second bearing seat 52 will not collide, and the distance between the first part 21 and the second bearing seat 52 is not less than the thickness of the first anti-collision structure 91 in the direction of the first axis 11 of the first shaft body 10. The first anti-collision structure 91 is, for example, an annular structure, and the material of the first anti-collision structure 91 can be copper, peek material, or other materials with ideal impact resistance and buffering properties. It can be understood that the first anti-collision structure 91 can also be arranged on the first exhaust end face 202.

[0095] It should be noted that the structural composition of the second anti-collision structure 92 can also refer to Figures 8 to 10 The first anti-collision structure 91 in.

[0096] As an example, Fig.11 A partial schematic diagram of a third compressor provided in an embodiment of the present invention is shown. Compared with the second compressor provided in an embodiment of the present invention, the differences are: 1. The second anti-collision structure 92 is different; 2. The fifth limiting structure 8301 does not protrude from the fourth exhaust end surface 404.

[0097] The second anti-collision structure 92 is an annular structure, and the first bearing seat 51 is provided with a second accommodating cavity 511 for installing the third end portion 32. The second anti-collision structure 92 is arranged in the second accommodating cavity 511, preferably arranged at the cavity mouth of the second accommodating cavity 511. Part of the second anti-collision structure 92 protrudes from the second accommodating cavity 511, and the protruding length is the tooth surface meshing clearance between the second part 22 and the fourth part 42, and the tooth surface meshing clearance is 0.03 mm to 0.05 mm. When the fourth part 21 is close to the housing 50 (for example, the first bearing seat 51), the second anti-collision structure 92 will abut against the housing 50 (for example, the first bearing seat 51), so that there is a gap between the fourth exhaust end face 404 and the housing 50 (for example, the first bearing seat 51) without collision. In addition, since the fourth exhaust end face 404 has an oil film, and the hardness of the material of the second anti-collision structure 92 is less than the hardness of the material of the fourth part 42, even if the second anti-collision structure 92 abuts against the fourth part 42, no scratches will be generated.

[0098] The material of the second anti-collision structure 92 can be copper, or other soft materials, such as peek material, etc., as long as the hardness of the material of the second anti-collision structure 92 is less than the hardness of the material of the first part 21 and the hardness of the material of the shell 50. The embodiment of the present invention does not specifically limit the shape of the second anti-collision structure 92, and it can be selected according to actual needs.

[0099] The compressor 100 in one or more of the above embodiments may be applied to an air conditioner.

[0100] An embodiment of the present invention further provides an air conditioner, which includes a compressor 100 defined in combination with one or more of the above embodiments.

[0101] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description in other embodiments above, and will not be repeated here.

[0102] A compressor and an air conditioner provided in an embodiment of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A compressor, characterized in that: The compressor comprises: case; a first rotor capable of rotating in the housing along a first axis, the first rotor comprising a first portion and a second portion with opposite thread directions, the first portion being made of a metal material, and the second portion being made of a non-metal material; A first shaft body, carrying the first part and the second part; and a first anti-collision structure, at least a portion of which is disposed between the first portion and the shell; The non-metallic material includes a peek material, and no anti-collision structure is provided between an end of the second part away from the first part and the shell; a second rotor capable of rotating in the housing along a second axis, comprising a third portion and a fourth portion with opposite thread directions, wherein the third portion is made of a non-metallic material and is configured to mesh with the first portion, and the fourth portion is made of a metallic material and is configured to mesh with the second portion; and A second shaft body, carrying the third part and the fourth part; The hardness of the material of the shell and the hardness of the material of the first part are both higher than the hardness of the material of the first anti-collision structure.

2. The compressor according to claim 1, characterized in that The first anti-collision structure is disposed on the surface of the shell, and along the direction of the first axis, at least a portion of the first anti-collision structure can be projected onto an end surface of the first portion away from the second portion.

3. The compressor according to claim 1, characterized in that The first anti-collision structure is arranged on an end surface of the first part away from the second part.

4. The compressor according to claim 1, characterized in that The first anti-collision structure is sleeved on the first shaft, and the first anti-collision structure is arranged between an end of the first part away from the second part and the shell.

5. The compressor according to claim 1, characterized in that The first part is sleeved on the first shaft, and a first transmission member is provided between the inner surface of the first part and the outer surface of the first shaft; The first transmission member is provided with a limiting structure, and at least part of the limiting structure protrudes from the end surface of the first part away from the second part; The first anti-collision structure includes the limiting structure.

6. The compressor according to claim 5, characterized in that The first transmission member includes at least one bearing shell.

7. The compressor according to claim 1, characterized in that The housing is provided with a first accommodating cavity for mounting the first shaft body, the first anti-collision structure is arranged in the first accommodating cavity, and the first anti-collision structure protrudes from the first accommodating cavity.

8. The compressor according to claim 7, characterized in that The first anti-collision structure is a ring-shaped structure, and the first anti-collision structure is sleeved on the first shaft.

9. The compressor according to claim 1, characterized in that The compressor further includes a motor drivingly connected to the first shaft to drive the first part and the second part to rotate along the first axis.

10. The compressor according to claim 1, characterized in that The compressor also includes: a second anti-collision structure, at least a portion of the second anti-collision structure being disposed between the fourth portion and the shell; The hardness of the material of the shell and the hardness of the material of the fourth part are both higher than the hardness of the material of the second anti-collision structure.

11. The compressor according to claim 1, characterized in that No anti-collision structure is provided between an end of the third part away from the fourth part and the shell.

12. The compressor according to claim 1, characterized in that The third part and the fourth part are both sleeved on the second shaft body, a second transmission member is provided between the inner surface of the third part and the outer surface of the second shaft body, and a third transmission member is provided between the inner surface of the fourth part and the outer surface of the second shaft body.

13. The compressor according to claim 12, characterized in that An end surface of the second transmission member close to the housing does not protrude beyond an end surface of the third portion away from the fourth portion.

14. The compressor according to claim 12, characterized in that An end surface of the third transmission member close to the housing protrudes from an end surface of the fourth portion away from the third portion.

15. An air conditioner, characterized in that: A compressor comprising the compressor described in any one of claims 1 to 14.

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