Compressor and refrigeration apparatus

Abstract

The application provides a compressor and a refrigeration equipment, the compressor comprising a crankcase, a seat body and a shaft sleeve, one end of the shaft sleeve being connected to the seat body; an outer rotor motor comprising a stator, the stator being provided with a mounting hole; a bushing, the shaft sleeve being provided on the bushing in an interference fit, the stator being provided on the bushing in an interference fit through the mounting hole, the bushing comprising a plurality of pressing members distributed along the circumference of the shaft sleeve, the inner wall of the pressing member being pressed against the outer circumferential wall of the shaft sleeve, and the adjacent two pressing members being connected to elastic members for buffering extrusion, the outer circumferential wall of the bushing being provided with a plurality of bosses, the bosses being distributed along the circumference of the bushing, and each boss being capable of being pressed against the hole wall of the mounting hole. By adopting the technical scheme, the extrusion force borne by the shaft sleeve is effectively reduced, the shaft hole of the shaft sleeve is prevented from being deformed, and the working performance of the compressor is effectively improved.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, and more specifically, relates to a compressor and refrigeration equipment. Background Technology

[0002] Currently, external rotor motors are widely used in the compressor field due to their advantages such as small size, large moment of inertia, and strong load capacity.

[0003] For compressors using external rotor motors, the stator of the external rotor motor is usually assembled on the crankcase bushing with an interference fit. However, when the interference between the stator and the bushing is too large, the stator will squeeze the bushing, causing the bushing hole to deform. This prevents the crankshaft from rotating stably within the bushing, resulting in a decrease in the compressor's performance. Summary of the Invention

[0004] The purpose of this application is to provide a compressor and refrigeration equipment to solve the technical problem that in existing compressors, the stator of the external rotor motor deforms the shaft hole of the crankcase bushing due to compression, causing the crankshaft to be unable to rotate stably within the bushing.

[0005] To achieve the above objectives, the technical solution adopted in this application embodiment is: to provide a compressor, comprising:

[0006] A crankcase includes a housing and a bushing, one end of which is connected to the housing;

[0007] An external rotor motor includes a stator, on which mounting holes are provided;

[0008] A bushing is interference-fitted onto the bushing. The stator is interference-fitted onto the bushing through the mounting hole. The bushing includes a plurality of pressing members spaced apart circumferentially along the bushing. The inner wall of the pressing member presses against the outer peripheral wall of the bushing. An elastic member for buffering compression is connected between two adjacent pressing members. The outer peripheral wall of the bushing is provided with a plurality of bosses, each of which is spaced apart circumferentially along the bushing and presses against the wall of the mounting hole.

[0009] Optionally, the elastic element is an elastic rib, the elastic rib has a groove-like structure, and the elastic rib extends along the axial direction of the bushing.

[0010] Optionally, the elastic rib protrudes radially from the inner peripheral wall of the bushing, and the outer peripheral wall of the bushing is provided with a plurality of anti-rotation grooves. The plurality of anti-rotation grooves are distributed circumferentially along the bushing and extend axially along the bushing. Each elastic rib and each anti-rotation groove are engaged in a one-to-one correspondence.

[0011] Optionally, the elastic rib protrudes radially from the outer peripheral wall of the bushing, and the height of the elastic rib protruding from the outer peripheral wall of the bushing is less than the height of the boss protruding from the outer peripheral wall of the bushing.

[0012] Optionally, the inner peripheral wall of the bushing is provided with an anti-rotation part, and the outer peripheral wall of the bushing is provided with an anti-rotation groove; or, the inner peripheral wall of the bushing is provided with an anti-rotation groove, and the outer peripheral wall of the bushing is provided with an anti-rotation part; the anti-rotation part engages with the anti-rotation groove.

[0013] Optionally, the boss is a hollow structure.

[0014] Optionally, the surface of the boss is an arc surface, the mounting hole is a cylindrical hole, and the arc surface fits into the wall of the mounting hole.

[0015] Optionally, the bushing is a one-piece molded part.

[0016] Optionally, one end of the pressing member abuts against the seat body, and the other end of the pressing member is provided with a locking part. A limiting groove is opened at the end of the bushing away from the seat body, and the locking part is engaged in the limiting groove.

[0017] Optionally, the end of the pressing member away from the seat body is bent toward the central axis of the bushing to form the locking portion.

[0018] Optionally, the locking part can abut against the groove wall of the limiting groove away from the seat body when the pressing member abuts against the seat body.

[0019] Optionally, the end of each of the pressing members closest to the seat body is bent toward the outer peripheral wall of the bushing to form a flange edge, and each of the flange edges abuts against the seat body.

[0020] The compressor provided in this application has at least the following beneficial effects: Compared with the prior art, the compressor of this application uses an elastic element to connect two adjacent pressing elements and inserts the bushing with an interference fit on the bushing. When the interference fit between the bushing and the bushing is too large, the elastic element will elastically expand in the distribution direction of the two adjacent pressing elements. In this way, the distance between the two adjacent pressing elements will increase, thereby increasing the inner diameter of the bushing and reducing the compressive force exerted by the bushing on the bushing. At the same time, by providing multiple bosses on the outer peripheral wall of the bushing, after the stator is inserted into the bushing with an interference fit, the contact area between each boss and the stator is small because each boss presses against the wall of the mounting hole of the stator. This effectively reduces the contact area between the stator and the bushing. Thus, when the interference fit between the stator and the bushing is too large, the compressive force of the stator will first act on each boss, causing each boss to deform slightly to absorb the interference fit between the stator and the bushing, thereby reducing the compressive force transmitted from the stator to the bushing through the bushing. It is evident that by adopting the above technical solution, the compressive force on the bushing is effectively reduced, thereby preventing deformation of the bushing's shaft hole and enabling the crankshaft to rotate stably within the bushing, thus effectively improving the compressor's working performance.

[0021] To achieve the above objectives, this application also provides a refrigeration device, including the compressor described in any of the above embodiments.

[0022] Because the above-mentioned refrigeration equipment uses the above-mentioned compressor, the working performance of the above-mentioned refrigeration equipment is effectively improved. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the compressor provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 The diagram shows the exploded structure of the compressor.

[0026] Figure 3 for Figure 2 The diagram shows the structure of the bushing in the compressor.

[0027] Figure 4 for Figure 3 The diagram shows the main structural view of the bushing.

[0028] Figure 5 for Figure 2 The diagram shows an enlarged view of the compressor at point A.

[0029] The following are the labeling elements in the figure:

[0030] 100. Compressor;

[0031] 110. Crankcase; 111. Bearing housing; 112. Bushing; 1121. Anti-rotation groove; 1122. Limiting groove; 1123. Shaft hole;

[0032] 120. External rotor motor; 121. Stator; 1211. Mounting hole;

[0033] 130. Bushing; 131. Pressing element; 1311. Locking part; 1312. Flange edge; 132. Elastic element; 1321. First elastic side; 1322. Second elastic side; 133. Boss; 1331. Arc surface. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0038] The first aspect of this application provides a compressor 100, which can be applied to refrigeration equipment such as refrigerators and air conditioners. The compressor 100 provided in the embodiments of this application will now be described with reference to the accompanying drawings.

[0039] Please refer to the following: Figures 1 to 4 The compressor 100 includes a crankcase 110, an external rotor motor 120, a bushing 130, and a crankshaft (not shown in the figure). The crankcase 110 includes a housing 111 and a bushing 112. One end of the bushing 112 is connected to the housing 111. A shaft hole 1123 is formed in the middle of the bushing 112, and the shaft hole 1123 passes through both ends of the bushing 112. The crankshaft passes through the shaft hole 1123. The external rotor motor 120 includes a stator 121 and an external rotor (not shown in the figure). The external rotor is sleeved on the stator 121 and is fixedly connected to the crankshaft. A mounting hole 1211 is formed on the stator 121. The mounting hole 1211 is located in the middle of the stator 121 and passes through both ends of the stator 121. The stator 121 is interference-fitted onto the bushing 130 through the mounting hole 1211. The bushing 130 is interference-fitted onto the bushing 112. The bushing 130 includes multiple pressing members 131, which are spaced apart circumferentially along the bushing 112. After the bushing 130 is fitted onto the bushing 112, the inner wall of each pressing member 131 can press against the outer peripheral wall of the bushing 112. An elastic member 132 is connected between two adjacent pressing members 131. The elastic member 132 is used to buffer the squeezing force of the bushing 130 on the bushing 112. The outer peripheral wall of the bushing 130 is provided with multiple bosses 133, which are spaced apart circumferentially along the bushing 130. After the stator 121 is fitted onto the bushing 130, each boss 133 can press against the wall of the mounting hole 1211.

[0040] Compared with the prior art, the compressor 100 provided in this application uses an elastic element 132 to connect two adjacent pressing elements 131, and an interference fit is made of the bushing 130 onto the bushing 112. When the interference fit between the bushing 130 and the bushing 112 is too large, the elastic element 132 will elastically expand in the distribution direction of the two adjacent pressing elements 131. This increases the distance between the two adjacent pressing elements 131, thereby increasing the inner diameter of the bushing 130 and reducing the compressive force exerted by the bushing 130 on the bushing 112. Simultaneously, by providing multiple protrusions 133 on the outer peripheral wall of the bushing 130, the compressor 100 further enhances its compressive strength. After the stator 121 is interference-fitted onto the bushing 130, the contact area between the bosses 133 and the stator 121 is reduced because the bosses 133 press against the walls of the mounting holes 1211 of the stator 121. This effectively reduces the contact area between the stator 121 and the bushing 130. Therefore, when the interference between the stator 121 and the bushing 130 is too large, the compressive force of the stator 121 will first act on the bosses 133, causing slight deformation of each boss to absorb the interference between the stator 121 and the bushing 130. This reduces the compressive force transmitted from the stator 121 to the bushing 112 via the bushing 130. Thus, by adopting the above technical solution, the compressive force on the bushing 112 is effectively reduced, thereby preventing deformation of the shaft hole 1123 of the bushing 112. This allows the crankshaft to rotate stably within the bushing 112, effectively improving the working performance of the compressor 100.

[0041] Specifically, to ensure the assembly stability between the stator 121 and the bushing 130, after the stator 121 is fitted onto the bushing 130, the stator 121 is connected to each boss 133. The connection method between the stator 121 and each boss 133 can be welding or bonding. In this embodiment, the stator 121 is welded to each boss 133.

[0042] It should be noted that the number of pressing members 131 and the number of elastic members 132 can be determined according to the actual application requirements. When only one elastic member 132 is provided between two adjacent pressing members 131, the number of pressing members 131 and the number of elastic members 132 are the same. For example, the number of pressing members 131 and the number of elastic members 132 are two, three, four, etc. When multiple elastic elements 132 are provided between two connected pressing members 131, the number of elastic elements 132 is an integer multiple of the number of pressing members 131. For example, if two elastic elements 132 are provided between two connected pressing members 131, then the number of elastic elements 132 is twice the number of pressing members 131; or if three elastic elements 132 are provided between two connected pressing members 131, then the number of elastic elements 132 is three times the number of pressing members 131. At the position between two adjacent pressing members 131, multiple elastic elements 132 are connected in sequence to form an elastic component. Among them, the elastic element 132 located on one outer side of the elastic component is connected to one pressing member 131, and the elastic element 132 located on the other outer side of the elastic component is connected to another pressing member 131.

[0043] The compressor 100 described above will be further explained below with the example of a case in which only one elastic element 132 is provided between two adjacent pressing elements 131.

[0044] In one embodiment of this application, please refer to the following: Figure 3 and Figure 4 The elastic element 132 is an elastic rib with a groove-like structure. Understandably, the cross-section of the elastic rib can be U-shaped, V-shaped, etc., without specific limitations. The elastic rib extends along the axial direction of the bushing 130. Specifically, the elastic rib has a first elastic side 1321 and a second elastic side 1322. At a position between two adjacent pressing elements 131, the first elastic side 1321 of the elastic rib is connected to one pressing element 131, and the second elastic side 1322 of the elastic rib is connected to the other pressing element 131. After the bushing 130 is fitted onto the bushing 112, when the interference fit between the bushing 130 and the bushing 112 is too large, the elastic rib will expand along its own width direction. At this time, the distance between two adjacent pressing parts 131 will increase accordingly, making the inner diameter of the bushing 130 larger, thereby reducing the squeezing force of the bushing 130 on the bushing 112, avoiding deformation of the shaft hole 1123 of the bushing 112, so that the crankshaft can rotate stably in the bushing 112, effectively improving the working performance of the compressor 100.

[0045] In one embodiment of this application, please refer to Figure 3 and Figure 5The elastic ribs protrude radially from the inner circumferential wall of the bushing 130. The outer circumferential wall of the bushing 112 has multiple anti-rotation grooves 1121, which are spaced apart circumferentially along the bushing 112 and extend axially along the bushing 112. After the bushing 130 is fitted onto the bushing 112, each elastic rib can engage with each anti-rotation groove 1121 in a one-to-one correspondence. Thus, the elastic ribs not only provide elasticity but also cooperate with the anti-rotation grooves 1121 to restrict the rotation of the bushing 130 on the bushing 112, effectively improving the assembly stability of the bushing 130.

[0046] Specifically, please refer to Figure 5 One end of each anti-rotation groove 1121 passes through the end of the bushing 112 away from the seat 111 to form an insertion port. During assembly, each elastic protrusion of the bushing 130 is aligned with each insertion port, and then the bushing 130 is pushed along the axial direction of the bushing 112 so that the bushing 130 is gradually fitted onto the bushing 112. At the same time, each elastic protrusion passes through the corresponding insertion port and is inserted into the corresponding anti-rotation groove 1121, thus completing the assembly operation of the bushing 130 and effectively reducing the assembly difficulty of the bushing 130.

[0047] Optionally, each pressing member 131 is evenly distributed along the circumference of the bushing 112, and correspondingly, each elastic member 132 is evenly distributed along the circumference of the bushing 112, and each anti-rotation groove 1121 is evenly distributed along the circumference of the bushing 112.

[0048] In another embodiment of this application, the elastic rib protrudes radially from the outer peripheral wall of the bushing 130, and the height of the elastic rib protruding from the outer peripheral wall of the bushing 130 is less than the protrusion height of the boss 133. Since the protrusion height of the elastic rib is less than the protrusion height of the boss 133, after the bushing 130 is sleeved on the bushing 112 and the stator 121 is sleeved on the bushing 130, the stator 121 will not exert a compressive force on the elastic rib, thus avoiding the deformation of the elastic rib and further expansion. This avoids the situation where the inner diameter of the bushing 130 further increases, causing the bushing 130 to be unable to have an interference fit with the bushing 112, effectively improving the assembly stability between the bushing 130 and the bushing 112.

[0049] In the above embodiments, the inner peripheral wall of the bushing 130 is provided with an anti-rotation portion (not shown in the figure), and the outer peripheral wall of the bushing 112 is provided with an anti-rotation groove 1121; or, the inner peripheral wall of the bushing 130 is provided with an anti-rotation groove 1121, and the outer peripheral wall of the bushing 112 is provided with an anti-rotation portion; after the bushing 130 is fitted onto the bushing 112, the anti-rotation portion can engage with the anti-rotation groove 1121. By cooperating with the anti-rotation portion and the anti-rotation groove 1121 to restrict the rotation of the bushing 130 on the bushing 112, the assembly stability of the bushing 130 is effectively improved.

[0050] Specifically, the anti-rotation groove 1121 extends along the axial direction of the bushing 112, and the anti-rotation part is a rib extending along the axial direction of the bushing 112. When the anti-rotation groove 1121 is opened on the outer peripheral wall of the bushing 112, one end of the anti-rotation groove 1121 passes through the end of the bushing 112 away from the seat 111 to form an insertion port. When the anti-rotation groove 1121 is opened on the inner peripheral wall of the bushing 130, one end of the anti-rotation groove 1121 passes through the end of the bushing 130 near the seat 111 to form an insertion port. During assembly, the anti-rotation part is aligned with the insertion port, and then the bushing 130 is pushed along the axial direction of the bushing 112 so that the bushing 130 is gradually fitted onto the bushing 112. At the same time, the anti-rotation part is inserted into the anti-rotation groove 1121 through the insertion port, thus completing the assembly operation of the bushing 130 and effectively reducing the assembly difficulty of the bushing 130.

[0051] In one embodiment of this application, the boss 133 is a hollow structure, which effectively reduces the rigidity of the boss 133. When the interference between the stator 121 and the bushing 130 is too large, each boss 133 can more effectively absorb the compressive force of the stator 121 and deform, thereby further reducing the compressive force transmitted from the stator 121 to the bushing 112 through the bushing 130, and better avoiding the deformation of the shaft hole 1123 of the bushing 112, so that the crankshaft can rotate stably in the bushing 112, and further improve the working performance of the compressor 100.

[0052] In one embodiment of this application, please refer to Figure 4 The surface of the boss 133 is an arc surface 1331, and the mounting hole 1211 is a cylindrical hole. The arc surface 1331 can fit against the wall of the mounting hole 1211 after the stator 121 is fitted onto the bushing 130. In the traditional method of directly interfering with the stator onto the bushing, in order to ensure the coaxiality between the stator and the bushing, the outer peripheral wall of the bushing needs to be finished. Since the area to be finished is large, the finishing efficiency is low and the finishing cost is high. Moreover, the finishing error is large, so the coaxiality between the stator and the bushing still cannot meet the requirements. This application achieves this by fitting the arc surfaces 1331 of each boss 133 into the wall of the mounting hole 1211. Only the arc surfaces 1331 of each boss 133 need to be finished, so that each arc surface 1331 is on the same circumference. The center of this circumference coincides with the axis of the bushing 112 and the axis of the stator 121. This effectively reduces the area that needs to be finished, improves finishing efficiency, reduces finishing cost, and also improves finishing accuracy, thereby ensuring the coaxiality of the stator 121, bushing 130 and bushing 112.

[0053] In one embodiment of this application, the bushing 130 is a one-piece molded part. For example, the bushing 130 is integrally formed by a stamping process; or, for example, the bushing 130 is integrally formed by a casting process. In this embodiment, the bushing 130 is integrally formed by a stamping process. Specifically, the hollow structures of the aforementioned elastic ribs and bosses 133 are both formed by stamping.

[0054] In one embodiment of this application, please refer to the following: Figure 3 and Figure 5 One end of the pressing member 131 is provided with a locking part 1311, and the end of the bushing 112 away from the seat 111 is provided with a limiting groove 1122. After the bushing 130 is fitted onto the bushing 112, the other end of the pressing member 131 abuts against the seat 111, and the locking part 1311 is engaged in the limiting groove 1122. This effectively restricts the axial movement of the bushing 130 along the bushing 112 and effectively improves the assembly stability of the bushing 130.

[0055] Understandably, at least one end of the pressing member 131 is provided with a locking part 1311. In this embodiment, each pressing member 131 is provided with a locking part 1311 at one end. Correspondingly, the bushing 112 is provided with a plurality of limiting grooves 1122, and each limiting groove 1122 is provided in a one-to-one correspondence with each locking part 1311. Specifically, each limiting groove 1122 is distributed around the axis of the bushing 112, and each limiting groove 1122 is spaced apart from each other, or the each limiting groove 1122 is interconnected to form an annular groove structure.

[0056] In the above embodiment, the end of the pressing member 131 away from the seat 111 is bent toward the central axis of the bushing 130 to form a locking part 1311. This makes the locking part 1311 have a certain elasticity. After the bushing 130 is sleeved on the bushing 112, the locking part 1311 undergoes a certain elastic deformation under the squeezing action of the outer peripheral wall of the bushing 112. When the locking part 1311 reaches the position of the limiting groove 1122, the locking part 1311 will recover under its own elastic action and lock into the limiting groove 1122 to restrict the bushing 130 from moving axially along the bushing 112. By adopting the above technical solution, the assembly difficulty of the bushing 130 is effectively reduced.

[0057] In the above embodiment, when the pressing member 131 abuts against the seat 111, the locking part 1311 abuts against the groove wall of the limiting groove 1122 away from the seat 111, so that the bushing 130 is restricted between the wall surface of the seat 111 near the bushing 112 and the groove wall of the limiting groove 1122 away from the seat 111, which more effectively restricts the axial movement of the bushing 130 along the bushing 112 and further improves the assembly stability of the bushing 130.

[0058] In the above embodiment, the end of each pressing member 131 near the seat 111 is bent toward the outer peripheral wall of the bushing 130 to form a flange edge 1312, and each flange edge 1312 abuts against the seat 111. Specifically, the seat 111 has a thrust surface, which surrounds the bushing 112. After the bushing 130 is fitted onto the bushing 112, the flange edge 1312 abuts against the thrust surface, and the locking part 1311 is engaged in the limiting groove 1122, effectively restricting the axial movement of the bushing 130 along the bushing 112, and effectively improving the assembly stability of the bushing 130.

[0059] A second aspect of this application provides a refrigeration device including the compressor 100 of any of the above embodiments.

[0060] Because the above-mentioned refrigeration equipment uses the above-mentioned compressor 100, the working performance of the above-mentioned refrigeration equipment is effectively improved.

[0061] It should be noted that the aforementioned refrigeration equipment includes, but is not limited to, refrigerators, air conditioners, etc.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compressor characterized by, The compressor comprises: a crankcase comprising a base body and a shaft sleeve, one end of the shaft sleeve being connected to the base body; an outer rotor motor comprising a stator, the stator being provided with a mounting hole; a bushing being interference-fitted on the shaft sleeve, the stator being interference-fitted on the bushing through the mounting hole, the bushing comprising a plurality of pressing members distributed along the circumference of the shaft sleeve, the inner wall of the pressing member being pressed against the outer peripheral wall of the shaft sleeve, and the adjacent two pressing members being connected with elastic members for buffering extrusion, the outer peripheral wall of the bushing being provided with a plurality of bosses, each of the bosses being distributed along the circumference of the bushing and being pressed against the hole wall of the mounting hole, and the boss being a hollow structure.

2. The compressor of claim 1, wherein: The elastic member is an elastic protruding rib, the elastic protruding rib being in a groove-shaped structure and extending along the axial direction of the bushing.

3. The compressor of claim 2, wherein: The elastic protruding rib protrudes radially from the inner peripheral wall of the bushing, the outer peripheral wall of the shaft sleeve being provided with a plurality of rotation-stopping grooves, the rotation-stopping grooves being distributed along the circumference of the shaft sleeve and extending along the axial direction of the shaft sleeve, and each of the elastic protruding ribs being engaged with each of the rotation-stopping grooves.

4. The compressor of claim 2, wherein: The elastic protruding rib protrudes radially from the outer peripheral wall of the bushing, the height of the elastic protruding rib protruding from the outer peripheral wall of the bushing being less than the height of the boss protruding from the outer peripheral wall of the bushing.

5. The compressor of claim 4, wherein: The inner peripheral wall of the bushing is provided with a rotation-stopping portion, and the outer peripheral wall of the shaft sleeve is provided with a rotation-stopping groove; or the inner peripheral wall of the bushing is provided with a rotation-stopping groove, and the outer peripheral wall of the shaft sleeve is provided with a rotation-stopping portion; the rotation-stopping portion being engaged with the rotation-stopping groove.

6. The compressor of any one of claims 1-5, wherein: The surface of the boss is a circular arc surface, and the mounting hole is a cylindrical hole, the circular arc surface being fitted with the hole wall of the mounting hole.

7. The compressor of any one of claims 1-5, wherein: The bushing is an integral molding.

8. The compressor of any one of claims 1-5, wherein: One end of the pressing member abuts against the base body, and the other end of the pressing member is provided with a clamping portion, the end of the shaft sleeve away from the base body being provided with a limiting groove, and the clamping portion being clamped into the limiting groove.

9. The compressor of claim 8, wherein: The end of the pressing member away from the base body is bent towards the central axis of the bushing to form the clamping portion.

10. The compressor of claim 8, wherein: The clamping portion can abut against the groove wall of the limiting groove away from the base body when the pressing member abuts against the base body.

11. The compressor of claim 8, wherein: The end of each of the pressing members close to the base body is bent towards the outer peripheral wall of the bushing to form a flange, and each of the flanges abuts against the base body.

12. A refrigeration appliance characterized by: The refrigeration equipment comprises the compressor according to any one of claims 1-11.

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