Compressors and air conditioners

Abstract

The present disclosure provides a compressor and an air conditioner. The compressor includes a housing, a first rotor disposed away from the housing, the first rotor being rotatable along a first axis and including a first part and a second part having opposite thread rotation directions, a first spacer, at least a portion of the first spacer being disposed between the first part and the housing, and a first drive device connected to the first spacer to control the first spacer to move along the direction of the first axis. The compressor in the present disclosure allows a predetermined gap to be maintained between the first rotor and the housing at all times, thereby avoiding collision or friction between the first rotor and the housing, and thus enhancing the stability of the compressor.

Description

[Technical Field]

[0001] This disclosure is based on and claims priority to Chinese Patent Application No. 202111422397.X, filed on November 26, 2021, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present disclosure relates to the technical field of compressors, and more particularly to compressors and air conditioners. [Background technology]

[0003] Due to their compact size, high efficiency, reliable performance, and high adaptability, screw compressors are widely used in aerodynamics, refrigeration and air conditioning equipment, and various process flows. The market share of screw compressors continues to expand. Screw compressors are equipped with a pair of intermeshing screw rotors with opposite screw thread rotation directions, each with a corresponding suction end and exhaust end. The suction, compression, and exhaust functions are achieved by the rotation of the pair of screw rotors within the machine body.

[0004] In practical applications, during the operation of the screw compressor, the screw rotors will operate for a long time, and interference will easily occur between the two screw rotors and between the rotor and the housing, which will cause collision or friction between the rotor and the housing, thus reducing the reliability of the compressor and affecting the stability of the whole rotor system and the compressor. Summary of the Invention [Means for solving the problem]

[0005] An embodiment of the present disclosure includes: Housing and a first rotor disposed remotely from the housing, the first rotor being rotatable along a first axis and including a first portion and a second portion having opposite thread rotation directions; a first spacer, at least a portion of the first spacer being disposed between the first portion and the housing; a first drive device connected to the first spacer to control the first spacer to move along the direction of the first axis; A compressor comprising:

[0006] In some embodiments, the compressor further comprises a first shaft, the first portion being sleeved onto the first shaft and the second portion being integrally formed with the first shaft.

[0007] In some embodiments, a first accommodating chamber is provided on the side of the housing facing the first part, the first drive device is disposed in the first accommodating chamber, a portion of the first spacer is positioned in the first accommodating chamber, and another portion of the first spacer is positioned between the first part and the housing.

[0008] In some embodiments, the first drive device includes a motor and a transmission mechanism, the transmission mechanism is connected to the first spacer, and the transmission mechanism drives the first spacer to move along the direction of the first axis under the drive of the motor.

[0009] In some embodiments, the compressor further comprises a first distance sensor that detects a distance between the first spacer and one end of the first portion.

[0010] In some embodiments, the first drive device is configured to control the first spacer to move along the direction of the first axis depending on the distance between the first spacer and one end of the first portion.

[0011] In some embodiments, when controlling the first spacer to move along the first axis in accordance with the distance between the first spacer and the one end of the first portion, the first drive device comprises: the first drive device is configured to control the first spacer to move along the first axis direction toward the first portion of the first rotor when a distance between the first spacer and one end of the first portion is greater than a predetermined distance threshold; When the distance between the first spacer and one end of the first portion is equal to or less than a predetermined distance threshold, the first drive device is configured to control the first spacer to move along the direction of the first axis toward the housing.

[0012] In some embodiments, the compressor includes a second rotor positioned remotely from the housing, the second rotor configured to rotate about a second axis, the second rotor including a third portion and a fourth portion having opposite thread rotation directions, the third portion configured to at least partially mate and intermesh with the first portion and the fourth portion configured to at least partially mate and intermesh with the second portion; and a second shaft, the third portion and the fourth portion being sleeved onto the second shaft.

[0013] In some embodiments, the compressor includes a second spacer, at least a portion of the second spacer being disposed between the fourth part and the housing; and a second drive device in driving connection with the second spacer for controlling the second spacer to move along the direction of the second axis.

[0014] In some embodiments, a second accommodating chamber is provided on the side of the housing facing the fourth part, the second drive device is disposed in the second accommodating chamber, a portion of the second spacer is positioned in the second accommodating chamber, and another portion of the second spacer is positioned between the fourth part and the housing.

[0015] In some embodiments, the compressor further comprises a second distance sensor that detects the distance between the second spacer and one end of the fourth portion.

[0016] In some embodiments, the second drive device is configured to control the second spacer to move along the direction of the second axis depending on the distance between the second spacer and one end of the fourth portion.

[0017] In some embodiments, when controlling the second spacer to move along the second axis in accordance with the distance between the second spacer and the one end of the fourth portion, the second drive device configured to control the second spacer to move along the first axis toward the fourth portion of the second rotor when a distance between the second spacer and one end of the fourth portion is greater than a predetermined distance threshold; The second spacer is configured to be controlled to move along the second axis direction toward the housing when the distance between the second spacer and one end of the fourth portion is equal to or less than a predetermined distance threshold.

[0018] Some embodiments of the present disclosure also provide an air conditioner including any one of the compressors described above.

[0019] By providing a first spacer between the first rotor and the housing, connecting a first drive device to the first spacer, and controlling the first spacer to move along the direction of the first axis, the compressor provided by some embodiments of the present disclosure can always maintain a predetermined gap between the first rotor and the housing, thereby avoiding collision or friction between the first rotor and the housing, and thus enhancing the stability of the rotor system and the compressor.

[0020] In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the accompanying drawings used in the description of the embodiments are briefly introduced below. It is clear that the accompanying drawings described below are only a part of the embodiments of the present disclosure. Those skilled in the art can also obtain other drawings based on these drawings without any creative efforts.

[0021] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts and in which: [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a schematic diagram of a portion of the structure of a first type of compressor provided by some embodiments of the present disclosure. FIG. [Figure 2] 2 is a schematic diagram illustrating a first rotor, a second rotor, a first shaft, and a second shaft cooperating with each other in a compressor provided by some embodiments of the present disclosure. FIG. [Figure 3] 1A and 1B are diagrams illustrating a first spacer and a first portion provided by some embodiments of the present disclosure. [Figure 4] 10 is a flowchart of a control process for a first distance sensor and a first driving device provided by some embodiments of the present disclosure. [Figure 5] FIG. 2 is a schematic diagram of a portion of a second type of compressor structure provided by some embodiments of the present disclosure. [Figure 6] 10A-10C are diagrams illustrating the state of a second spacer and a second portion provided by some other embodiments of the present disclosure. [Figure 7] 10 is a flowchart of a control process for a second distance sensor and a second driving device provided by some other embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, a clear and complete description of the technical solutions of the embodiments of the present disclosure will be provided in the embodiments of the present disclosure, together with the accompanying drawings. Obviously, the described embodiments are only a part, not all, of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure shall fall within the protection scope of the present disclosure without any inventive efforts.

[0024] An embodiment of the present disclosure provides a compressor, such as a screw compressor or a scroll compressor, that is applied to fluid machinery such as an air conditioner.

[0025] Referring to Figures 1 and 2, Figure 1 is a schematic diagram of a portion of the structure of a compressor provided by some embodiments of the present disclosure, and Figure 2 is a schematic diagram showing a first rotor, a second rotor, a first shaft, and a second shaft that cooperate with each other in a compressor provided by some embodiments of the present disclosure.

[0026] Some embodiments of the present disclosure provide a compressor 100. 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 first shaft 10 and the second shaft 30 are arranged parallel to each other within the housing 50. The first rotor 20 is provided on the first shaft 10, and the second rotor 40 is provided on the second shaft 30. The first rotor 20 and the housing 50 have an axial gap, and the second rotor 40 and the housing 50 also have an axial gap.

[0027] The first rotor 20 and the second rotor 40 mesh with each other. In some embodiments, the first rotor 20 is a male rotor and the second rotor 40 is a female rotor. The first rotor 20, as the male rotor, is understood to be the driving rotor, and the second rotor 40, as the female rotor, is understood to be the driven rotor. The first rotor 20 is in a transmission connection with the electric motor 60, so that the first rotor 20 is driven to rotate by the electric motor 60, and during rotation, the first rotor 20 drives the second rotor 40, which meshes with the first rotor 20, to rotate simultaneously.

[0028] In some embodiments, the first rotor 20 is carried by a first shaft 10, which is configured to rotatably support the first rotor 20, such that the first rotor 20 rotates about a first axis 11 of the first shaft 10. Under the action of meshing of the first rotor 20 and the second rotor 40, the second rotor 40 is driven by the first rotor 20 to rotate about a second axis 31 of the second shaft 30. The first rotor 20 includes a first portion 21 and a second portion 22 having opposite thread rotation directions. The first portion 21 is sleeved onto the first shaft 10, and the second portion 22 is integrally formed with the first shaft 10, and both the first portion 21 and the second portion 22 rotate about the first axis 11 within the housing 50. The first and second parts 21, 22, which have opposite thread rotation directions, are machined separately and then assembled, taking into account both the machining and performance requirements of the first rotor 20.

[0029] It should be understood that the end face of the first portion 21 closest to the second portion 22 is a first suction end face 201, and the end face of the first portion 21 remote from the second portion 22 is a first exhaust end face 202. The end face of the second portion 22 closest to the first portion 21 is a second suction end face 203, and the end face of the second portion 22 remote from the first portion 21 is a second exhaust end face 204, with a gap between the first exhaust end face 202 and the second exhaust end face 204.

[0030] 1 and 2 , a second rotor 40 is carried by the second shaft 30, and the second rotor 40 rotates about the second axis 31 within the housing 50. In some embodiments of the present disclosure, the second rotor 40 is sleeved on the circumferential outer surface of the second shaft 30. In some embodiments, the second rotor 40 includes a third portion 41 and a fourth portion 42 having opposite thread rotation directions. The third portion 41 is configured to at least partially mate with the first portion 21, and the fourth portion 42 is configured to at least partially mate with the second portion 22. The third portion 41 and the first portion 21 have opposite thread rotation directions, and the fourth portion 42 and the second portion 22 have opposite thread rotation directions.

[0031] In some embodiments of the present disclosure, the first rotor 20 and the second rotor 40 are arranged parallel within a housing 50. The first shaft 10 has a first end 12 and a second end 13, where the first end 12 is fixed to a bearing mounted within the housing 50 and the second end 13 is drivingly connected to an electric motor 60, with the first portion 21 and the second portion 22 positioned between the first end 12 and the second end 13. The second shaft 30 has a third end 32 and a fourth end 33, respectively, fixed to the housing 50. The second shaft 30 does not rotate with respect to the housing 50 and is stationary without relative motion. The third portion 41 and the fourth portion 42 are positioned between the third end 32 and the fourth end 33. Both the third portion 41 and the fourth portion 42 are rotatable with respect to the second shaft 30.

[0032] When the first rotor 20 and the second rotor 40 mesh and rotate, the first portion 21 generates a first axial force and the second portion 22 generates a second axial force. Because the first portion 21 and the second portion 22 are symmetrically arranged and have opposite thread rotation directions, the first axial force and the second axial force are theoretically equal in magnitude but opposite in direction, and therefore the first axial force and the second axial force cancel each other out. Similarly, the third axial force and the fourth axial force also theoretically cancel each other out. In actual use, the compressor 100 may have problems with unstable axial forces when turned on or off. Because the third portion 41 and the fourth portion 42 are rotatable relative to the second shaft 30, the positions of the third portion 41 and the fourth portion 42 may move when the compressor is turned on or off, which may result in problems with the third portion 41 and / or the fourth portion 42 colliding with the housing 50.

[0033] In consideration of this, the compressor 100 provided according to some embodiments of the present disclosure further includes a first spacer 71, a first driving device 81, and a first distance sensor 91. The first driving device 81 is drivingly connected to the first spacer 71 and drives the first spacer 71 to move along the direction of the first axis 11, so that a predetermined gap is always maintained between the first rotor 20 and the housing 50, thereby avoiding collision or friction between the first rotor 20 and the housing 50 and thus enhancing the stability of the compressor 100.

[0034] Referring to FIG. 3 in conjunction with FIGS. 1 and 2, FIG. 3 is a diagram illustrating a first spacer and a first portion provided by some embodiments of the present disclosure. A first accommodating chamber 51 is provided on the side of the housing 50 facing the first portion 21. A first driving device 81 is disposed in the first accommodating chamber 51, with a portion of the first spacer 71 positioned within the first accommodating chamber 51 and another portion of the first spacer 71 protruding from the first accommodating chamber 51. The first driving device 81 is connected to the first spacer 71, and a distance d1 is maintained between the first spacer 71 and one end of the first portion 21. The predetermined distance d1 prevents the first rotor 20 from colliding with the housing 50.

[0035] In some embodiments, the first driving device 81 includes a motor 811 and a transmission mechanism 812. For example, the transmission mechanism 812 is a gear set, and the transmission mechanism 812 is drivingly connected to the first spacer 71. Specifically, a miniature motor having a very small size is used as the motor. Under the driving of the miniature motor, the transmission mechanism 812 drives the first spacer 71 to move along the direction of the first axis 11 to adjust the value of the distance d1 between the first spacer 71 and one end of the first portion 21, as shown in FIG. 3 .

[0036] In practical applications, as the first rotor 20 operates for a long time, the first spacer 71 will be worn or deformed, which will cause a change in the distance d1 between the first spacer 71 and one end of the first portion 21, and therefore, collision of the first rotor 20 with the first spacer 71 and the housing 50 will be relatively serious, affecting the performance and stability of the compressor 100. Therefore, the compressor 100 provided according to the embodiment of the present disclosure further includes a first distance sensor 91 configured to detect the axial distance d1 between the first spacer 71 and one end of the first portion 21. The first driving device 81 is configured to control the first spacer 71 to move along the direction of the first axis 11 according to the axial distance between the first spacer 71 and one end of the first portion 21.

[0037] 3 and 4, Fig. 4 is a flowchart of a control process of the first distance sensor 91 and the first driving device 81 provided by some embodiments of the present disclosure. The control process of the first distance sensor 91 and the first driving device 81 provided by some embodiments of the present disclosure includes the following.

[0038] The first distance sensor 91 detects the distance between the first spacer 71 and one end of the first portion 21, S101.

[0039] The distance between the first spacer 71 and one end of the first portion 21 is d1 as shown in FIG.

[0040] The first driving device 81 controls the first spacer 71 to move along the direction of the first axis 11 according to the above-mentioned distance, S102.

[0041] In some embodiments, during operation of the compressor 100, when the first distance sensor 91 detects that the distance between the first spacer 71 and one end of the first portion 21 is greater than a predetermined distance threshold, the first drive device 81 controls the first spacer 71 to move along the direction of the first axis 11 toward the first portion 21 of the first rotor 20 to make the distance between the first spacer 71 and one end of the first portion 21 equal to the predetermined distance threshold, so as to reduce or even avoid the possibility of a collision between the first rotor 20 and the housing 50 and to increase the stability of the performance of the compressor 100.

[0042] In some embodiments, during operation of the compressor 100, when the first distance sensor 91 detects that the distance between the first spacer 71 and one end of the first portion 21 is less than or equal to a predetermined distance threshold, the first drive device 81 controls the first spacer 71 to move in a direction away from the first portion 21 along the first axis 11 to make the distance between the first spacer 71 and one end of the first portion 21 equal to the predetermined distance threshold so as to avoid a collision between the first rotor 20 and the housing 50, which would affect the stability of the performance of the compressor 100.

[0043] Referring to Figures 5 and 6, Figure 5 is a schematic diagram of a portion of a compressor structure provided by some embodiments of the present disclosure, and Figure 6 is a diagram of a second spacer and a second portion provided by some other embodiments of the present disclosure.

[0044] 5 , in some other embodiments of the present disclosure, the compressor 100 further includes a second spacer 72, a second driving device 82, and a second distance sensor 92. The second driving device 82 is connected to the second spacer 72 and controls the second spacer 72 to be movable along the direction of the second axis 31, so that a predetermined gap is always maintained between the second rotor 40 and the housing 50, thereby reducing or even avoiding the possibility of collision or friction between the second rotor 40 and the housing 50, and further enhancing the stability of the compressor 100.

[0045] The housing 50 has a second accommodating chamber 52 on the side facing the fourth portion 42. The second driving device 82 is disposed in the second accommodating chamber 52, with a portion of the second spacer 72 positioned within the second accommodating chamber 52 and another portion of the second spacer 72 protruding from the second accommodating chamber 52. The second driving device 82 is connected to the second spacer 72, and a distance d2 is maintained between the second spacer 72 and one end of the fourth portion 42. The predetermined distance d2 prevents the second rotor 40 from colliding with the housing 50.

[0046] In some embodiments, the second driving device 82 includes a motor and a transmission mechanism. The transmission mechanism is a gear set and is connected to the second spacer 72. Specifically, a small motor having a small size is used as the motor. Under the drive of the small motor, the transmission mechanism drives the second spacer 72 to move along the direction of the second axis 31, i.e., adjusts the value of the distance d2 between the second spacer 72 and one end of the fourth portion 42, as shown in FIG. 6 .

[0047] In practical applications, as the second rotor 40 operates for a long time, the second spacer 72 will be worn or deformed, which will cause a change in the distance d2 between the second spacer 72 and the fourth portion 42, thereby causing a collision of the second rotor 40 with the second spacer 72 and the housing 50 to become relatively serious, affecting the performance and stability of the compressor 100. Therefore, the compressor 100 provided according to some embodiments of the present disclosure further includes a second distance sensor 92 configured to detect the distance between the second spacer 72 and one end of the fourth portion 42. The second driving device 82 is configured to control the second spacer 72 to move along the direction of the second axis 31 according to the distance between the second spacer 72 and one end of the fourth portion 42.

[0048] 6 and 7, Fig. 7 is a flowchart of a control process for the second distance sensor 92 and the second driving device 82 provided by some other embodiments of the present disclosure. The control process for the second distance sensor 92 and the second driving device 82 provided by the embodiments of the present disclosure includes the following.

[0049] The second distance sensor 92 detects the distance between the first spacer 72 and one end of the fourth portion 42, S201.

[0050] The distance between the second spacer 72 and one end of the fourth portion 42 is d2 as shown in FIG.

[0051] The second driving device 82 controls the second spacer 72 to move along the direction of the second axis 31 according to the above-mentioned distance, S202.

[0052] In some embodiments, during operation of the compressor 100, when the second distance sensor 91 detects that the distance between the second spacer 72 and one end of the fourth portion 42 is greater than a predetermined distance threshold, the second drive device 82 controls the second spacer 72 to move along the direction of the second axis 31 toward the fourth portion 42 of the second rotor 40 to make the distance between the second spacer 72 and one end of the fourth portion 42 match the predetermined distance threshold, so as to reduce collisions between the second rotor 40 and the housing 50, which would affect the stability of the performance of the compressor 100.

[0053] In some embodiments, during operation of the compressor 100, when the second distance sensor 91 detects that the distance between the second spacer 72 and one end of the fourth portion 42 is less than or equal to a predetermined distance threshold, the second drive device 82 controls the second spacer 72 to move along the direction of the second axis 31 toward the housing 50 to make the distance between the second spacer 72 and one end of the fourth portion 42 match the predetermined distance threshold so as to reduce the likelihood of collision between the second rotor 40 and the housing 50 in order to improve the stability of the performance of the compressor 100.

[0054] With respect to the above-described embodiment, it should be noted that the material of the first spacer 71 and the second spacer 72 may be a material having a soft texture, such as a PEEK material. The hardness of the material of both the first spacer 71 and the second spacer 72 is lower than the hardness of the housing 50 and the hardness of the first rotor 20 and the second rotor 40. The shape of the first spacer 71 and the second spacer 72 is also not particularly limited to the embodiments of the present disclosure.

[0055] By providing a first spacer 71 between the first rotor 20 and the housing 50, connecting a first drive device 81 to the first spacer 71, and controlling the first spacer 71 to move along the direction of the first axis 11, the compressor 100 provided by some embodiments of the present disclosure always maintains a gap between the first rotor 20 and the housing 50, thereby making collision or friction between the first rotor 20 and the housing 50 less likely to occur, thereby increasing the stability of the compressor 100.

[0056] It should be noted that the second portion 22 and the housing 50 may or may not have a spacer therebetween. Similarly, the third portion 41 and the housing 50 may or may not have a spacer therebetween.

[0057] The embodiments of the present disclosure further provide an air conditioner including the above-described compressor 100, and the air conditioner also has the technical effects described above.

[0058] In describing the present disclosure, it should be understood that the orientations or positional relationships indicated by terms such as "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "upper," "lower," "inner," and "outer" are orientations or positional relationships indicated based on the drawings, and do not indicate or suggest that the devices or elements shown have a particular orientation or must be configured and operate in a particular orientation, but are merely for the convenience of explaining and simplifying the description of the present disclosure, and therefore, these terms cannot be construed as limiting the scope of protection of the present disclosure.

[0059] Finally, it should be noted that the above embodiments are only used to explain, not to limit, the technical solutions of the present disclosure. Although the present disclosure is described in detail with reference to preferred embodiments, it should be understood that those skilled in the art can make modifications to the specific implementations of the present disclosure or make equivalent substitutions to some of its technical features, and such modifications and equivalent substitutions should be included in the scope of the technical solutions sought for protection in the present disclosure as long as they do not deviate from the spirit of the technical solutions of the present disclosure. [Explanation of symbols]

[0060] 10 First Shaft 11 First Axis 12 First End 13 Second End 20 First rotor 21 First Part 22 Second Part 201 first suction end surface 202 first exhaust end face 203 Second suction end face 204 Second exhaust end face 30 Second Shaft 31 Second Axis 32 Third Edge 33 The Fourth Edge 40 Second rotor 41 Third Part 42 Fourth Part 401 Third suction end face 402 Third exhaust end face 403 Fourth suction end face 404 4th exhaust end face 50 Housing 51 First Containment Chamber 52 Second Containment Chamber 60 Electric Motor 71 First spacer 72 Second spacer 81 First driving device 82 Second driving device 91 First distance sensor 92 Second distance sensor 100 Compressor

Claims

1. a housing (50); a first rotor (20) positioned away from the housing (50), the first rotor (20) being rotatable along a first axis and comprising a first portion (21) and a second portion (22) having opposite thread rotation directions; a first spacer (71), at least a portion of which is disposed between the first part (21) and the housing (50); a first driving device (81) connected to the first spacer (71) to control the first spacer (71) to move along the direction of the first axis; Equipped with a first distance sensor (91) configured to detect a distance between the first spacer (71) and one end of the first portion (21); the first driving device (81) is configured to control the first spacer (71) to move along the direction of the first axis according to the distance between the first spacer (71) and one end of the first portion (21); When controlling the first spacer (71) to move along the direction of the first axis according to the distance between the first spacer (71) and one end of the first portion (21), the first driving device (81) when the distance between the first spacer (71) and one end of the first portion (21) is greater than a predetermined distance threshold, the first driving device (81) is configured to control the first spacer (71) to move along the direction of the first axis toward the first portion (21) of the first rotor (20); a compressor, wherein the first drive device (81) is configured to control the first spacer (71) to move along the direction of the first axis toward the housing (50) when the distance between the first spacer (71) and one end of the first portion (21) is equal to or less than the predetermined distance threshold.

2. 2. The compressor of claim 1, further comprising a first shaft (10), wherein the first portion (21) is sleeved onto the first shaft (10) and the second portion (22) is integrally formed with the first shaft (10).

3. 3. The compressor according to claim 2, wherein a first accommodating chamber is provided on a side of the housing facing the first portion, the first driving device is disposed in the first accommodating chamber, a portion of the first spacer is positioned in the first accommodating chamber, and another portion of the first spacer is positioned between the first portion and the housing.

4. The first drive device (81) comprises: A motor (811); a transmission mechanism (812) connected to the first spacer (71), which drives the first spacer (71) to move along the direction of the first axis under the driving of the motor (811); The compressor of claim 1 , comprising:

5. a second rotor (40) positioned away from the housing (50), the second rotor (40) configured to rotate about a second axis, the second rotor (40) comprising a third portion (41) and a fourth portion (42) having opposite thread rotation directions, the third portion (41) configured to at least partially mesh with the first portion (21), and the fourth portion (42) configured to at least partially mesh with the second portion (22); a second shaft (30), wherein the third portion (41) and the fourth portion (42) are sleeved onto the second shaft (30); The compressor of claim 1 further comprising:

6. a second spacer (72), at least a portion of which is disposed between the fourth portion (42) and the housing (50); and a second drive device (82) in driving connection with the second spacer (72) for controlling the second spacer (72) to move along the second axis; The compressor of claim 5 further comprising:

7. 7. The compressor according to claim 6, wherein a second accommodating chamber is provided on a side of the housing facing the fourth portion, the second drive device is disposed in the second accommodating chamber, a portion of the second spacer is positioned in the second accommodating chamber, and another portion of the second spacer is positioned between the fourth portion and the housing.

8. The compressor of claim 6, further comprising a second distance sensor (92) configured to detect a distance between the second spacer (72) and one end of the fourth portion (42).

9. 9. The compressor of claim 8, wherein the second driving device is configured to control the second spacer to move along the direction of the second axis in accordance with the distance between the second spacer and one end of the fourth portion.

10. When controlling the second spacer (72) to move along the direction of the second axis according to the distance between the second spacer (72) and one end of the fourth portion (42), the second driving device (82) configured to control the second spacer (72) to move along the direction of the first axis toward the fourth portion (42) of the second rotor (40) when the distance between the second spacer (72) and one end of the fourth portion (42) is greater than a predetermined distance threshold; 9. The compressor of claim 8, further comprising: a control unit configured to control the second spacer to move along the direction of the second axis toward the housing when the distance between the second spacer and one end of the fourth portion is equal to or less than the predetermined distance threshold.

11. An air conditioning system comprising the compressor of claim 1.

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