Compressors and air conditioners

Abstract

The present invention discloses a compressor and an air conditioner. The compressor includes a housing, a first rotor and a first spacer. The first rotor can rotate within the housing along a first axis. The first rotor includes a first working part and a second working part with opposite rotation directions. The hardness of the material of the first spacer is lower than the hardness of the material of the housing and the hardness of the material of the first rotor. At least a portion of the first spacer is arranged between the first working part and the housing to prevent the first working part from colliding with the housing. Compared with existing screw compressors, the compressor of the present invention effectively reduces the number of bearings while ensuring normal operation, and has the advantages of reducing manufacturing costs, saving energy consumption, and simplifying assembly.

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 heart of the refrigeration system, a driven fluid machine that boosts low-pressure gas to high-pressure. Screw compressors are a major type of compressor, with twin-screw compressors being the mainstream. Existing twin-screw compressors typically feature a pair of intermeshing, oppositely rotating helical rotors, each with an intake and exhaust port. The rotation of the rotors within the compressor achieves intake, compression, and exhaust.

[0003] Due to the different intake and exhaust pressures, each rotor in the pair experiences different forces at the intake and exhaust ends, generating an axial force. To limit this axial force and reduce the compressor's operating load, thrust bearings (four in total) are typically installed on either side of each rotor to support the axial force and ensure relatively stable rotation of each rotor. Furthermore, bearings are also located on either side of each rotor to balance radial forces. Consequently, existing twin-screw compressors contain a large number of bearings, resulting in high manufacturing costs, high operating power consumption, and complex assembly. Summary of the Invention

[0004] In view of the shortcomings of the prior art, embodiments of the present invention provide a compressor and an air conditioner, aiming to reduce the number of bearings of the existing screw compressor while ensuring the normal operation of the compressor.

[0005] In a first aspect, the present invention provides a compressor, comprising:

[0006] case;

[0007] a first rotor rotatable along a first axis within the housing, the first rotor comprising a first working portion and a second working portion with opposite rotation directions; and

[0008] a first spacer, wherein the hardness of the material of the first spacer is lower than the hardness of the material of the housing and the hardness of the material of the first rotor, and at least a portion of the first spacer is disposed between the first working part and the housing to prevent the first working part from colliding with the housing.

[0009] In an optional embodiment of the present invention, the compressor further includes: a first shaft, carrying the first working part and the second working part.

[0010] In an optional embodiment of the present invention, the first spacer includes: a first transmission member, which is sleeved on the first shaft and can rotate around the first shaft;

[0011] The first working part is sleeved on the first transmission member, and under the rotation of the first transmission member, the first working part can rotate synchronously around the first shaft;

[0012] The first transmission member includes a first limiting structure, and the first limiting structure protrudes from the end surface of the first working part close to the housing.

[0013] In an optional embodiment of the present invention, the first transmission member is a sliding bearing.

[0014] In an optional embodiment of the present invention, the first spacer is provided on the first shaft, and the first spacer is located between the first working part and the shell.

[0015] In an optional embodiment of the present invention, a first accommodating cavity for mounting the first shaft is provided on the shell, the first spacer is arranged in the first accommodating cavity, and the first spacer protrudes from the first accommodating cavity.

[0016] In an optional embodiment of the present invention, the first spacer is an annular structure, and the first spacer is sleeved on the first shaft, and the first spacer and the first shaft are interference fit.

[0017] In an optional embodiment of the present invention, the first spacer is provided on the surface of the shell, and along the direction of the first axis, at least a portion of the first spacer can be projected onto the end surface of the first working part away from the second working part.

[0018] In an optional embodiment of the present invention, the first spacer is fixed to the surface of the shell by bonding or welding.

[0019] In an optional embodiment of the present invention, the compressor further includes: a second spacer, the hardness of the material of the second spacer is lower than the hardness of the material of the shell and the hardness of the material of the second rotor, and at least a portion of the second spacer is arranged between the second working part and the shell to prevent the second working part from colliding with the shell.

[0020] In an optional embodiment of the present invention, the compressor further includes: a second rotor capable of rotating along a second axis within the casing; the second rotor includes a third working part and a fourth working part with opposite rotation directions, the third working part is configured to at least partially fit and engage with the first working part, and the fourth working part is configured to at least partially fit and engage with the second working part.

[0021] In an optional embodiment of the present invention, the compressor further comprises:

[0022] a second shaft, carrying the third working part and the fourth working part; and

[0023] The motor is drivingly connected to the second shaft to drive the third working part and the fourth working part to rotate along the second axis.

[0024] In an optional embodiment of the present invention, the third working part and the second shaft are integrally formed, and the fourth working part is sleeved on the second shaft.

[0025] In an optional embodiment of the present invention, the compressor further includes: a third spacer, at least a portion of which is disposed between the first working part and the second working part.

[0026] In a second aspect, the present invention provides an air conditioner, comprising the compressor described in any one of the first aspects.

[0027] The present invention provides a compressor and air conditioner. The first rotor in the compressor includes a first working portion and a second working portion. The first and second working portions are symmetrically arranged and rotate in opposite directions, so that the axial force generated by the first working portion and the axial force generated by the second working portion can at least partially offset each other. When the axial force generated by the first working portion and the axial force generated by the second working portion are not completely offset, the positions of the first and second working portions may shift. The present invention provides a first spacer to prevent the first working portion from colliding with the casing, eliminating the need for additional thrust bearings. Compared to existing twin-screw compressors, the present invention reduces the number of thrust bearings on at least two sides of the first rotor while ensuring normal operation of the compressor. This helps simplify the compressor structure, optimize the bearing assembly process, and reduce compressor operating energy consumption.

[0028] The present invention can also provide a first spacer and a second spacer at the same time to prevent the first working part and the second working part from colliding with the shell.

[0029] In the present invention, the first rotor can engage with other rotor structures such as the second rotor during rotation, the first working part of the first rotor can engage with the third working part of the second rotor, and the second working part of the first rotor can engage with the fourth working part of the second rotor to form two groups of rotor pairs. The compressor of the present invention is equivalent to two existing twin-screw compressors in parallel. Therefore, the compressor of the present invention can greatly reduce the size of the compressor while having the same or similar exhaust volume as the existing twin-screw compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0031] Figure 1 A schematic diagram of the partial structure of a compressor provided by an embodiment of the present invention.

[0032] Figure 2 A schematic diagram of the cooperation between the first rotor, the second rotor, the first shaft and the second shaft in the compressor provided in an embodiment of the present invention.

[0033] Figure 3 for Figure 1 Schematic diagram of the partial structure of the compressor shown.

[0034] Figure 4 for Figure 3 A partial enlarged schematic diagram of the dotted circle at point A in the compressor shown.

[0035] Figure 5 for Figure 3 A partial enlarged schematic diagram of the dotted circle at point B in the compressor shown.

[0036] Figure 6 This is a schematic structural diagram of the first transmission component in the compressor provided by an embodiment of the present invention.

[0037] Figure 7 for Figure 6 A cross-sectional view of the first transmission member along the PP direction is shown.

[0038] Figure 8 FIG. 1 is a diagram showing a state in which the first spacer and the first working portion are in contact with each other in one embodiment of the present invention.

[0039] Figure 9 FIG. 4 is a diagram showing a state in which the first spacer and the first working portion are in contact with each other in the second embodiment of the present invention.

[0040] Figure 10 FIG. 1 is a diagram showing a state in which the first spacer and the first working portion are in contact with each other in the third embodiment of the present invention.

[0041] 10. First shaft; 11. First axis; 12. First end; 13. Second end;

[0042] 20. First rotor; 21. First working part; 22. Second working part; 201. First suction end face; 202. First exhaust end face; 203. Second suction end face; 204. Second exhaust end face; 211. First spiral blade; 221. Second spiral blade;

[0043] 30. Second shaft; 31. Second axis; 32. Third end; 33. Fourth end;

[0044] 40, second rotor; 41: third working part; 42, fourth working part; 401, third suction end face; 402, third exhaust end face; 403, fourth suction end face; 404, fourth exhaust end face; 411, third spiral blade; 421, fourth spiral blade;

[0045] 50. Housing; 51. First bearing seat; 511. First accommodating cavity; 52. Second bearing seat;

[0046] 60. Motor;

[0047] 71. First transmission member; 72. Second transmission member; 73. Third transmission member; 74. Fourth transmission member; 75. First radial bearing; 76. Second radial bearing; 77. Thrust bearing; 711. First limiting structure; 721. Second limiting structure; 731. Third limiting structure; 741. Fourth limiting structure;

[0048] 81. First bedding; 82. Second bedding;

[0049] 100. Compressor. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0051] References to "embodiments" or "implementations" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present invention. The appearance of such phrases in various locations in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein may be combined with other embodiments. Based on this, an embodiment of the present invention is provided, which is described in detail below.

[0052] As used in the present invention, “first”, “second”, etc. are used to distinguish different objects rather than to describe a specific order.

[0053] As used herein, the words "includes," "has," "has," "has" and any variations thereof are intended to cover a non-exclusive inclusion.

[0054] As used herein, "plurality" means two or more.

[0055] 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 parallel to 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.

[0056] The first rotor 20 and the second rotor 40 mesh with each other. In an embodiment of the present invention, the first rotor 20 may be a female rotor, and the second rotor 40 may be a male rotor. In other embodiments of the present invention, the first rotor 20 may be a male rotor, and the second rotor 40 may be a female rotor. The following embodiments of the present invention are described in detail using the example of the first rotor 20 being a female rotor and the second rotor 40 being a male rotor.

[0057] The second rotor 40 as the male rotor can be understood as the active rotor, and the first rotor 20 as the female rotor can be understood as the driven rotor. The second rotor 40 can be in transmission connection with a drive assembly such that the second rotor 40 can be driven by the drive assembly to rotate. The rotation of the second rotor 40 simultaneously drives the first rotor 20 to rotate together. The drive assembly can be, for example, a motor 60.

[0058] The first rotor 20 is carried by the first shaft 10. The first shaft 10 is configured to rotatably support the first rotor 20, and the first rotor 20 can rotate relative to the first shaft 10. Under the meshing action of the first rotor 20 and the second rotor 40, the first rotor 20 can be driven by the second rotor 40 to rotate on the first shaft 10 along the first axis 11 of the first shaft 10. The first rotor 20 can have at least two working parts. For example, the first rotor 20 includes a first working part 21 and a second working part 22 with opposite rotation directions. The first working part 21 and the second working part 22 are both sleeved on the first shaft 10 and can rotate about the first axis 11 within the housing 50.

[0059] See Figure 1 and Figure 2 The end surface of the first working portion 21 close to the second working portion 22 is the first suction end surface 201, and the end surface of the first working portion 21 away from the second working portion 22 is the first exhaust end surface 202. The end surface of the second working portion 21 close to the first working portion 21 is the second suction end surface 203, and the end surface of the second working portion 22 away from the first working portion 21 is the second exhaust end surface 204. The first suction end surface 201 and the second suction end surface 202 do not fit together.

[0060] The first rotor 20 has spiral lobes, also known as female lobes. The first rotor 20 includes a first spiral lobe 211 located in the first working portion 21 and a second spiral lobe 221 located in the second working portion 22. There may be multiple first spiral lobes 211 and multiple second spiral lobes 221. In this embodiment of the present invention, the first spiral lobes 211 and the second spiral lobes 221 are configured to have opposite spiral directions, so that the first working portion 21 and the second working portion 22 have opposite rotation directions.

[0061] The compressor 100 is provided with a transmission assembly, which includes a first transmission member 71 and a second transmission member 72. The first shaft 10 can support the first working part 21 via the first transmission member 71, and the first shaft 10 can support the second working part 22 via the second transmission member 72. For example, the first transmission member 71 and the second transmission member 72 can be sliding bearings or rolling bearings. The first working part 21 and the second working part 22 are both hollow structures. The first working part 21 is mounted on the first transmission member 71, and the second working part 22 is mounted on the second transmission member 72. The first transmission member 71 and the first working part 21 are mounted on the first shaft 10 together, so that the first working part 21 and the first transmission member 71 can rotate together around the first shaft 10. The second transmission member 72 and the second working part 22 are mounted on the second shaft 30 together, so that the second working part 22 and the second transmission member 72 can rotate together around the first shaft 10.

[0062] The second rotor 40 is supported by the second shaft 30 and is drivably connected to the motor 60 via the second shaft 30. The motor 60 can drive the second shaft 30 to rotate, and the second shaft 30 can rotate along the second axis 31 of the second shaft 30 together with the second rotor 40 it supports. That is, the second rotor 40 can rotate within the housing 50 along the second axis 31. In some embodiments of the present invention, the second rotor 40 can be integrally formed with the second shaft 30. In other embodiments of the present invention, a portion of the second rotor 40 can be integrally formed with the second shaft 30, while a portion can be sleeved on the second shaft 30. In still other embodiments of the present invention, the second rotor 40 can be directly sleeved on the second shaft 30.

[0063] Exemplarily, the second rotor 40 includes a third working portion 41 and a fourth working portion 42 having opposite rotational directions. The third working portion 41 is configured to at least partially mate with and engage with the first working portion 21, and the fourth working portion 42 is configured to at least partially mate with and engage with the second working portion 22. The third working portion 41 and the first working portion 21 have opposite rotational directions, while the fourth working portion 42 and the second working portion 22 have opposite rotational directions. The third working portion 41 is integrally formed with the second shaft 30, and the fourth working portion 42 is sleeved onto the second shaft 30.

[0064] The end surface of the third working section 41 closest to the fourth working section 42 is a third suction end surface 401, and the end surface of the third working section 41 remote from the fourth working section 42 is a third exhaust end surface 402. The end surface of the fourth working section 42 closest to the third working section 41 is a fourth suction end surface 403, and the end surface of the fourth working section 42 remote from the third working section 41 is a fourth exhaust end surface 404. In some embodiments, the third suction end surface 401 and the fourth suction end surface 403 may be in close contact; in other embodiments, the third suction end surface 401 and the fourth suction end surface 403 may not be in close contact, but may have a slight gap therebetween, such as 0.1 mm, 0.2 mm, 0.3 mm, etc.

[0065] The second rotor 40 has spiral lobes, also known as male lobes. The second rotor 40 includes a third spiral lobe 411 located in the third working portion 41 and a fourth spiral lobe 421 located in the fourth working portion 42. There may be multiple third spiral lobes 411, and there may be multiple fourth spiral lobes 421. In this embodiment of the present invention, the first spiral lobe 211 and the second spiral lobe 221 are configured to have opposite spiral directions, so that the third working portion 41 and the fourth working portion 42 have opposite spiral directions.

[0066] The transmission assembly also includes a first radial bearing 75 and a second radial bearing 76, respectively disposed on either side of the second rotor 40 to balance the radial forces generated by the rotation of the second rotor 40. The first radial bearing 75 is located on the side of the second rotor 40 closest to the motor 60 and near the third working portion 41. The second radial bearing 76 is located on the side of the second rotor 40 away from the motor 60 and near the fourth working portion 42. Both the first and second radial bearings 75, 76 are sleeved on the second shaft 30 and can be, for example, cylindrical roller bearings.

[0067] 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 parallel to each other between the first bearing seat 51 and the second bearing seat 52. The first bearing seat 51 is located on the same side as the motor 60. The first bearing seat 51 supports a first radial bearing 75, while the second bearing seat 52 supports a second radial bearing 76. Furthermore, the first and second bearing seats 51 and 52 support the first and second shafts 10 and 30. The first shaft 10 has a first end 12 and a second end 13. The first end 12 is fixed to the first bearing seat 51, and the second end 13 is fixed to the second bearing seat 52. The first and second working portions 21 and 22 are restrained between the first and second bearing seats 51 and 52. The second shaft 30 has a third end 32 and a fourth end 33. The third end 32 passes through the first bearing seat 51 for driving connection with the motor 60. The fourth end 33 is rotatably mounted on the second bearing seat 52. The third and fourth working portions 41 and 42 are restrained between the first and second bearing seats 51 and 52.

[0068] There is a slight gap between the first exhaust end surface 202 and the first bearing seat 51, and between the second exhaust end surface 204 and the second bearing seat 52. Correspondingly, there is a slight gap between the third exhaust end surface 402 and the first bearing seat 51, and between the fourth exhaust end surface 404 and the second bearing seat 52. The gap may be, for example, 0.1 mm, 0.2 mm, or 0.3 mm.

[0069] When the first rotor 20 and the second rotor 40 engage and rotate, the first working portion 21 generates a first axial force, and the second working portion 22 generates a second axial force. Since the first working portion 21 and the second working portion 22 are symmetrically arranged and rotate in opposite directions, the first and second axial forces are theoretically equal in magnitude and opposite in direction, thereby canceling each other out. Similarly, the third and fourth axial forces are also theoretically canceled out. In actual use, the compressor 100 may experience unstable axial forces at the moment of powering on and off. Since the first and second working portions 21, 22 can rotate relative to the first shaft 10, their positions may shift at the moment of powering on and off, potentially causing the first working portion 21 and / or the second working portion 22 to collide with the housing.

[0070] Based on this, in order to ensure that the first working part 21 and / or the second working part 22 will not collide with the housing 50 at the moment of powering on and off the compressor 100, the compressor 100 of the embodiment of the present invention is further provided with a first spacer 81 and / or a second spacer 82, wherein at least a portion of the first spacer 81 is arranged between the first working part 21 and the housing 50 to prevent the first working part 21 from colliding with the housing 50, and at least a portion of the second spacer 82 is arranged between the second working part 22 and the housing 50 to prevent the first working part 21 from colliding with the housing 50, and the hardness of the materials of the first spacer 81 and the second spacer 82 are both lower than the hardness of the material of the housing 50 and the hardness of the material of the first rotor 20.

[0071] It should be noted that the first spacer 81 and the second spacer 82 can be identical or different. The first spacer 81 and the second spacer 82 can be simultaneously provided in the compressor 100, or the movement directions of the first working portion 21 and the second working portion 22 can be oriented through structural design. That is, when the compressor 100 is turned on or off, the first working portion 21 and the second working portion 22 will only move in one direction, thereby requiring only the first spacer 81 or the second spacer 82. The following description uses the technical solution in which the first spacer 81 and the second spacer 82 are simultaneously provided in the compressor 100, and the first spacer 81 and the second spacer 82 are identical, as an example.

[0072] In one embodiment of the present invention, see Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The first spacer 81 includes a first transmission member 71, and the second spacer 82 includes a second transmission member 72. The first transmission member 71 and the second transmission member 72 have the same structural composition. The first transmission member 71 includes a first limiting structure 711, and the first limiting structure 711 protrudes from the first exhaust end surface 202. When the first working part 21 approaches the first bearing seat 51, the first limiting structure 711 will abut against the first bearing seat 51 to avoid collision between the first working part 21 and the first bearing seat 51. Referring to the first spacer 81, the second transmission member 72 includes a second limiting structure 721, and the second limiting structure 721 protrudes from the second exhaust end surface (not marked). When the second working part 22 approaches the second bearing seat 52, the second limiting structure 721 will abut against the second bearing seat 52 to avoid collision between the second working part 22 and the second bearing seat 52. The first transmission member 71 and the second transmission member 72 are both sliding bearings. In the example, the first transmission member 71 and the second transmission member 72 are both bearings. The first limiting structure 711 is the end of the first transmission member 71 close to the first exhaust end face 202, and the second limiting structure 721 is the end of the second transmission member 72 close to the second exhaust end face.

[0073] In another embodiment of the present invention, the first spacer 81 is used as an example for description, and the shape, material, position and connection relationship of the second spacer 82 (not shown) with other components refer to the first spacer 81. Figure 8 The first spacer 81 is a copper ring structure. The first bearing seat 51 is provided with a first accommodating cavity 511 for mounting the first end portion 12. The first spacer 81 is arranged on the first accommodating cavity 511, preferably at the cavity opening of the first accommodating cavity 511, and the first spacer 81 protrudes from the first accommodating cavity 511. The protruding range is the tooth surface meshing clearance between the first working part 21 and the third working part 41 (not marked), and the tooth surface meshing clearance is 0.03 mm to 0.05 mm. When the first working part 21 approaches the first bearing seat 51, the first spacer 81 will abut against the first working part 21 to prevent the first working part 21 from colliding with the first bearing seat 51. In addition, since the first exhaust end face 202 has an oil film and the texture of copper is relatively soft, even if the first spacer 81 abuts against the first working part 21, no scratching problem will occur.

[0074] Regarding the above embodiment, it should be noted that the materials of the first spacer 81 and the second spacer 82 can also be other softer materials, such as peek, as long as the hardness of the materials of the first spacer 81 and the second spacer 82 is lower than the hardness of the materials of the housing 50 and the first rotor 20. The embodiment of the present invention does not specifically limit the shapes of the first spacer 81 and the second spacer 82, and can be selected according to actual needs.

[0075] In addition, the positions of the first spacer 81 and the second spacer 82 are not specifically limited. The first spacer 81 and the second spacer 82 can be set on the shell 50, on the first shaft 10, on the first rotor 20, etc., as long as at least a portion of the first spacer 81 is set between the first working part 21 and the shell 50, and at least a portion of the second spacer 82 is set between the second working part 22 and the shell 50.

[0076] In another embodiment of the present invention, see Figure 9 , the first spacer 81 is arranged on the surface of the first bearing seat 51, and there are two first spacers 81, and the two first spacers 81 are symmetrically arranged about the first shaft 10. The first spacer 81 is fixed to the surface of the first bearing seat 51 by bonding or welding, and at least a portion of the first spacer 81 can be projected onto the first exhaust end face 202 along the direction of the first axis 11. The first spacer 81 can be a copper boss structure. When the first working part 21 approaches the first bearing seat 51, the two first spacers 81 respectively abut against the first working part 21 to avoid collision between the first working part 21 and the first bearing seat 51.

[0077] In another embodiment of the present invention, see Figure 10 , the first spacer 81 is provided on the first shaft body 10, and the first spacer 81 is located between the first working part 21 and the first bearing seat 51. The first spacer 81 can be integrally formed with the first shaft body 10, or the first spacer 81 can be sleeved on the first shaft body 10. The first spacer 81 can be a copper ring structure. In an embodiment of the present invention, the first working part 21 and the first bearing seat 51 are separated by the first spacer 81. During actual operation, the distance between the first working part 21 and the first bearing seat 51 is not less than the axial thickness of the first spacer 81.

[0078] In order to avoid interference between the working parts in alignment, that is, misaligned engagement between the first working part 21 and the fourth working part 42, or misaligned engagement between the second working part 22 and the third working part 41, the compressor 100 of the embodiment of the present invention is further provided with a third spacer 83, at least a portion of the third spacer 83 is arranged between the first working part 21 and the second working part 22.

[0079] For examples, please see Figure 3 The transmission assembly further includes a third transmission member 73 and a fourth transmission member 74. The structures of the third transmission member 73 and the fourth transmission member 74 are the same as those of the first transmission member 71. The third transmission member 73 abuts the first transmission member 71, and the fourth transmission member 74 abuts the second transmission member 72. The third spacer 83 includes the third transmission member 73 and the fourth transmission member 74.

[0080] The first working portion 21 is sleeved on the first transmission member 71 and the third transmission member 73, and the second working portion 22 is sleeved on the second transmission member 72 and the fourth transmission member 74. The first transmission member 71, the third transmission member 73, and the first working portion 21 are sleeved together on the first shaft 10, so that the first transmission member 71, the third transmission member 73, and the first working portion 21 can rotate together about the first shaft 10. The second transmission member 72, the fourth transmission member 74, and the second working portion 22 are sleeved together on the first shaft 10, so that the second transmission member 72, the fourth transmission member 74, and the second working portion 22 can rotate together about the first shaft 10.

[0081] The third transmission member 73 includes a third limiting structure 731, and the fourth transmission member includes a fourth limiting structure 741. The third limiting structure 731 protrudes from the first suction end face 201, and the fourth limiting structure 741 protrudes from the second suction end face 203, so that the third limiting structure 731 and the fourth limiting structure 741 abut against each other, thereby achieving a preset gap between the first suction end face 201 and the second suction end face 203. The third transmission member 73 and the fourth transmission member 74 are sliding bearings. In this example, the third transmission member 73 and the fourth transmission member 74 are both bearings. The third limiting structure 731 is the end of the third transmission member 73 closest to the first suction end face 201, and the fourth limiting structure 741 is the end of the fourth transmission member 74 closest to the second suction end face 203.

[0082] See also Figure 4 The third suction end face 401 and the fourth suction end face 403 are in contact with each other. Due to the abutment of the third limiting structure 731 and the fourth limiting structure 741, a predetermined gap is defined between the first suction end face 201 and the second suction end face 203. The third suction end face 401 protrudes from the first suction end face 201, and the fourth suction end face 403 protrudes from the second suction end face 203. The gap L1 between the first suction end face 201 and the third suction end face 401 is 0.3 mm, and the gap L2 between the second suction end face 203 and the fourth suction end face 403 is also 0.3 mm. This prevents interference between the aligned working parts.

[0083] It should be noted that, in the actual production and processing process, it was found that due to various factors, such as: manufacturing deviations resulting in structural differences between the first working part 21 and the second working part 22, or between the third working part 41 and the fourth working part 42; assembly deviations resulting in the mutual cooperation between the first working part 21 and the third working part 41 being different from the mutual cooperation between the second working part 22 and the fourth working part 42, the first axial force and the second axial force may not be able to completely offset each other, and correspondingly, the third axial force and the fourth axial force may not be able to completely offset each other. Even if the first axial force and the second axial force cannot completely offset each other, the resultant force after the two offset each other is small. Although the first working part 21 and the second working part 22 will slide on the first shaft 10, due to the setting of the first spacer 81 and / or the second spacer 82, the compressor 100 can still operate normally. If the third working part 41 and the fourth working part 42 are both fixed on the second shaft 30, then when the third axial force and the fourth axial force cannot completely offset each other, external force is needed to balance the resultant force after the two offset each other. Therefore, continue to refer to Figure 1 A thrust bearing 77 can be provided on the side of the second shaft 30 away from the motor 60 to bear the resultant force. The thrust bearing 77 can be an angular contact bearing. Compared with the prior art, this technical solution omits at least three axial bearings, which is beneficial to reducing the manufacturing cost and operating power consumption of the compressor 100.

[0084] The compressor 100 in one or more of the above embodiments may be applied to an air conditioner.

[0085] 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.

[0086] In the above embodiments, the description of each embodiment has its own focus. 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.

[0087] The above is a detailed introduction to a compressor and an air conditioner provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods 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 may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A compressor, characterized in that: The compressor comprises: case; a first rotor rotatable along a first axis within the housing, the first rotor comprising a first working portion and a second working portion with opposite rotation directions; and a first spacer, wherein the hardness of the material of the first spacer is lower than the hardness of the material of the housing and the hardness of the material of the first rotor, and at least a portion of the first spacer is disposed between the first working part and the housing to prevent the first working part from colliding with the housing; the compressor further comprises: a first shaft, supporting the first working part and the second working part; The first spacer includes: a first transmission member, which is sleeved on the first shaft and can rotate around the first shaft; the first working part is sleeved on the first transmission member, and under the rotation of the first transmission member, the first working part can synchronously rotate around the first shaft; The first transmission member includes a first limiting structure, and the first limiting structure protrudes from the end surface of the first working part close to the housing.

2. The compressor according to claim 1, characterized in that The first transmission member is a sliding bearing.

3. The compressor according to claim 1, characterized in that The compressor further includes: a second spacer, wherein the hardness of the material of the second spacer is lower than the hardness of the material of the shell and the hardness of the material of the first rotor, and at least a portion of the second spacer is arranged between the second working part and the shell to prevent the second working part from colliding with the shell.

4. The compressor according to any one of claims 1 to 3, characterized in that The compressor also includes: a second rotor capable of rotating along a second axis within the shell; the second rotor includes a third working part and a fourth working part with opposite rotation directions, the third working part is configured to at least partially fit and engage with the first working part, and the fourth working part is configured to at least partially fit and engage with the second working part.

5. The compressor according to claim 4, characterized in that The compressor further comprises: a second shaft, carrying the third working part and the fourth working part; and The motor is drivingly connected to the second shaft to drive the third working part and the fourth working part to rotate along the second axis.

6. The compressor according to claim 5, characterized in that The third working portion is integrally formed with the second shaft, and the fourth working portion is sleeved on the second shaft.

7. The compressor according to claim 4, characterized in that The compressor further includes a third spacer, at least a portion of which is disposed between the first working part and the second working part.

8. An air conditioner, characterized in that: The compressor comprises the compressor described in any one of claims 1 to 7.

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