Compressor aligning assembly and scroll compressor

Abstract

The utility model provides a compressor self-aligning assembly and scroll compressor, the compressor self-aligning assembly comprises a crankshaft, the first end of the crankshaft is provided with an eccentric crank and a positioning hole, the eccentric crank comprises a stop block and a crank which are coaxially arranged, and the two ends of the stop block are respectively connected with the first end and the crank; the balance block is provided with a sleeving hole and a connecting hole, the stopping block is sleeved with the sleeving hole, and the connecting hole is connected with the positioning hole in an aligned mode; a special-shaped hole and an eccentric hole which are coaxially formed are formed in the eccentric swing sleeve, the crank firstly penetrates through the special-shaped hole and then is connected with the eccentric hole in an inserted mode, the stop block is connected and limited by the special-shaped hole in a sleeved mode, and the cross section of the special-shaped hole is a pattern for limiting the bidirectional rotation angle of the stop block. According to the utility model, the meshing effect of the compressor during low-speed operation can be ensured by utilizing the special structures of the eccentric swing sleeve and the crankshaft, so that the compressor can quickly enter a meshing state, the low-speed loading capacity and the energy efficiency of the compressor are improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted refrigeration equipment, and specifically to a compressor centering assembly and a scroll compressor. Background Art

[0002] At present, new energy vehicles use fully electric variable frequency scroll compressors for air conditioning refrigeration and heating. Since vehicle electric scroll compressors utilize centrifugal force, during operation, the moving scroll and the stationary scroll of the compressor engage, and the crankshaft drives the rotation to compress the refrigerant gas. If the scrolls of the compressor cannot engage quickly, internal leakage will occur, resulting in low compressor performance and high exhaust temperature, affecting the operating range of the compressor.

[0003] Comparative document CN211449029U provides a scroll compressor and its eccentric adjustment mechanism. The eccentric adjustment mechanism includes: a crankshaft, including a main shaft and an eccentric part, the eccentric part being provided at the first end of the main shaft; a first mounting hole and a second mounting hole are formed at the first end of the main shaft, and the first mounting hole and the second mounting hole are circumferentially distributed along the eccentric part; a limit pin detachably connected to the first mounting hole; the limit pin includes a limit part and a mounting part, and the limit part and the mounting part form a cam structure; a stop pin provided in the second mounting hole; and a limit swing sleeve including an integrally formed balance block and a swing sleeve, the limit swing sleeve being rotatably connected to the eccentric part and the balance block and the swing sleeve being sequentially penetrated by the eccentric part. The utility model can not only achieve precise control of the eccentric amount of the scroll compressor, but also solve the noise problem caused by using an eccentric sliding sleeve or an eccentric swing sleeve. However, the above patent CN211449029U innovates the structure of the eccentric shaft assembly, limits the rotation angle of the eccentric swing sleeve through a cam limit pin, and regulates the centroid of the moving disk assembly. However, the focus is on solving the problem of increased noise during the operation of the eccentric swing sleeve, and there is no more consideration for ensuring the meshing effect during operation.

[0004] Therefore, the utility model provides a compressor centering assembly and a scroll compressor. Summary of the Utility Model

[0005] Aiming at the problems in the prior art, the compressor centering assembly and the scroll compressor of the utility model overcome the difficulties of the prior art, and can utilize the special structures of the eccentric swing sleeve and the crankshaft to ensure the meshing effect during the low-speed operation of the compressor, enabling the compressor to quickly enter the meshing state, and improving the low-speed load-carrying capacity and energy efficiency of the compressor.

[0006] An embodiment of the utility model provides a compressor mounting assembly, including:

[0007] A crankshaft, at the first end of which there is an eccentric crank and a positioning hole. The eccentric crank includes a stop block and a crank arranged coaxially. Both ends of the stop block are respectively connected to the first end and the crank.

[0008] A balance weight, which has a socket hole and a connection hole. The socket hole is sleeved on the stop block, and the connection hole is connected in alignment with the positioning hole; and

[0009] An eccentric swing sleeve, in which there are a special-shaped hole and an eccentric hole arranged coaxially. The crank first passes through the special-shaped hole and then is inserted into the eccentric hole. The stop block is sleeved and limited by the special-shaped hole, and the cross-section of the special-shaped hole is a pattern that limits the two-way rotation angle of the stop block.

[0010] Preferably, the cross-section of the stop block is a first pattern obtained by parallel shaving and two-side processing of a circle, and the first pattern has two first arc edges and two straight edges.

[0011] Preferably, the special-shaped hole is a pattern formed by butt-jointing two sector holes back to back, and a waist-shaped stop portion is formed at the butt-joint. The first arc edges at both ends of the stop portion rotate along the second arc edge of the sector hole until the straight edge is stopped by the waist-shaped stop portion.

[0012] Preferably, there is a clearance fit between the second arc edge and the first arc edge.

[0013] Preferably, the straight edge is in surface contact with the waist-shaped stop portion.

[0014] Preferably, the central angle corresponding to the sector hole is 30° to 120°.

[0015] Preferably, a long shaft is formed at the second end of the crankshaft, and a main balance weight connecting the long shaft is provided at the first end of the crankshaft. The eccentric crank and the positioning hole are arranged on the side of the main balance weight away from the long shaft.

[0016] Preferably, the stop block is connected to the side of the main balance weight away from the long shaft, and the eccentric crank is connected to the side of the stop block away from the main balance weight.

[0017] Preferably, the connection hole is pin-connected and positioned with the positioning hole through a positioning pin; or, the connection hole is screwed and positioned with the positioning hole through a screw.

[0018] An embodiment of the present utility model further provides a scroll compressor, including the compressor alignment component as described above.

[0019] The centering assembly of the compressor and the scroll compressor of the present utility model can ensure the meshing effect during the low-speed operation of the compressor by means of the special structures of the eccentric swing sleeve and the crankshaft, enabling the compressor to quickly enter the meshing state, improving the low-speed load-carrying capacity and energy efficiency of the compressor. At the same time, the centering structure is designed in a split manner, reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects, and advantages of the present utility model will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings.

[0021] Figure 1 is a perspective view of the centering assembly of the compressor of the present utility model.

[0022] Figure 2 is a side view of the centering assembly of the compressor of the present utility model.

[0023] Figure 3 is a perspective view of the crankshaft in the centering assembly of the compressor of the present utility model.

[0024] Figure 4 is a perspective view of the balance weight in the centering assembly of the compressor of the present utility model.

[0025] Figure 5 is a perspective view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model.

[0026] Figure 6 is a bottom view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model.

[0027] Figure 7 is a top view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model.

[0028] Figure 8 is Figure 7 a sectional view taken along the line A-A in

[0029] Figure 9 is a partial sectional view of the scroll compressor of the present utility model.

[0030] Figure 10 is a schematic view of one side of the stop block being blocked during the operation of the scroll compressor.

[0031] Figure 11 is Figure 10 a partial enlarged view of

[0032] Figure 12 is a schematic view of the other side of the stop block being blocked during the operation of the scroll compressor.

[0033] Figure 13 is Figure 12 a partial enlarged view of

[0034] Reference Signs

[0035] 1 Crankshaft

[0036] 10 Eccentric Crank

[0037] 11 Positioning Hole

[0038] 12 Stopper

[0039] 121 First Arc Edge

[0040] 122 Straight Edge

[0041] 13 Crank

[0042] 14 Long Shaft

[0043] 15 Main Balance Weight

[0044] 2 Eccentric Swing Sleeve

[0045] 21 Eccentric Hole

[0046] 22 Special-shaped Hole

[0047] 221 Second Arc Edge

[0048] 222 Waist-reducing Stopper Part

[0049] 3 Balance Weight

[0050] 31 Socket Hole

[0051] 32 Connecting Hole

[0052] 4 Positioning Pin

[0053] 5 Scroll Compressor

[0054] 51 Main Bearing

[0055] 52 Moving Scroll Disk

[0056] 53 Scroll Disk Bearing

[0057] 54 Motor Detailed Implementation Modes

[0058] The following describes the implementation modes of the present application through specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through other different specific implementation modes. Various details in the present application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0059] The following will describe embodiments of the present application in detail with reference to the accompanying drawings, so that those skilled in the technical field to which the present application pertains can easily implement it. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0060] In the description of the present application, the reference to the expression of terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics expressed in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics expressed can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine different embodiments or examples expressed in the present application and the features of different embodiments or examples.

[0061] In addition, the terms "first" and "second" are only used for illustrative purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0062] To clearly illustrate the present application, devices irrelevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0063] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" with other elements interposed therebetween. In addition, when it is said that a certain device "includes" a certain component, unless there is a particularly contrary record, it does not exclude other components but means that other components can also be included.

[0064] When it is said that a device is "above" another device, this can be directly above the other device, but there can also be other devices in between. When it is said that a device is "directly" "above" another device, there are no other devices in between.

[0065] Although in some instances the terms first, second, etc. are used herein to denote various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. are indicated. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to also include the plural forms unless the context clearly dictates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude the presence, occurrence or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition occurs only when the combination of elements, functions, steps or operations are mutually exclusive in some manner.

[0066] The technical terms used herein are only for referring to specific embodiments and are not intended to limit the present application. The singular forms used herein also include the plural forms as long as the statements do not clearly indicate the contrary meaning. The meaning of "including" used in the specification is to embody specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0067] Although not differently defined, including the technical terms and scientific terms used herein, all terms have the same meaning as generally understood by those skilled in the technical field to which this application pertains. Terms defined in commonly used dictionaries are additionally interpreted to have a meaning consistent with the relevant technical literature and the content currently presented, and should not be over-interpreted as ideal or overly formulaic meanings as long as they are not defined.

[0068] Figure 1 is a perspective view of the centering assembly of the compressor of the present utility model. Figure 2 is a side view of the centering assembly of the compressor of the present utility model. Figure 3 is a perspective view of the crankshaft in the centering assembly of the compressor of the present utility model. Figure 4 is a perspective view of the balance weight in the centering assembly of the compressor of the present utility model. Figure 5 is a perspective view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model. Figure 6 is a bottom view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model. Figure 7 is a top view of the eccentric swing sleeve in the centering assembly of the compressor of the present utility model. Figure 8 is Figure 7Cross-sectional view taken along line A-A in the middle. As Figures 1 to 8 shown, the centering assembly of the compressor of the present utility model includes: a crankshaft 1, an eccentric swing sleeve 2, and a balance weight 3. Among them, a first end of the crankshaft 1 is provided with an eccentric crank 10 and a positioning hole 11. The eccentric crank 10 includes a stop block 12 and a crank 13 arranged coaxially. Two ends of the stop block 12 are respectively connected to the first end and the crank 13. The balance weight 3 has a socket hole 31 and a connection hole 32. The socket hole 31 is sleeved on the stop block 12, and the connection hole 32 is connected in alignment with the positioning hole 11. An irregular-shaped hole 22 and an eccentric hole 21 are arranged coaxially in the eccentric swing sleeve 2. The crank 13 first passes through the irregular-shaped hole 22 and then is inserted into the eccentric hole 21. The stop block 12 is sleeved and limited by the irregular-shaped hole 22. The cross-section of the irregular-shaped hole 22 is a pattern that limits the bidirectional rotation angle of the stop block 12. The present utility model provides a compressor with a centering structure, which utilizes the special structures of the eccentric swing sleeve and the crankshaft to ensure the meshing effect when the compressor runs at a low speed, enabling the compressor to quickly enter the meshing state, improving the low-speed load-carrying capacity and energy efficiency of the compressor. At the same time, the centering structure is designed in a split manner, reducing the manufacturing cost.

[0069] In a preferred embodiment, the cross-section of the stop block 12 is a first pattern in which a circle is parallelly cut and the two sides are cut, and the first pattern has two first arc edges 121 and two straight edges 122, but is not limited thereto.

[0070] In a preferred embodiment, the irregular-shaped hole 22 is a pattern formed by butt-jointing two sector holes back to back, and a waist-shaped stop portion 222 is formed at the butt-jointing position. The first arc edges 121 at both ends of the stop portion rotate along the second arc edge 221 of the sector hole until the straight edge 122 is stopped by the waist-shaped stop portion 222. The sector holes in the present invention can more accurately control the rotation angle of the stop block 12 and optimize the movement trajectories of the stop block 12 and the crank 13 during the stopping process, but are not limited thereto.

[0071] In a preferred embodiment, the irregular-shaped hole 22 is a sector hole, and the straight edges on both sides of the sector hole stop the straight edge 122 of the stop portion, but is not limited thereto.

[0072] In a preferred embodiment, there is a clearance fit between the second arc edge 221 and the first arc edge 121, but is not limited thereto.

[0073] In a preferred embodiment, the straight edge 122 and the waist-shaped stop portion 222 are in surface contact, but is not limited thereto.

[0074] In a preferred embodiment, the central angle corresponding to the sector hole is 30° to 120°, but is not limited thereto.

[0075] In a preferred embodiment, the second end of the crankshaft 1 forms a long shaft 14, and a main balance weight 15 connecting to the long shaft 14 is provided at the first end of the crankshaft 1. The eccentric crank 10 and the positioning hole 11 are arranged on the side of the main balance weight 15 away from the long shaft 14, but not limited thereto.

[0076] In a preferred embodiment, the stop block 12 is connected to the side of the main balance weight 15 away from the long shaft 14, and the eccentric crank 10 is connected to the side of the stop block 12 away from the main balance weight 15, but not limited thereto.

[0077] In a preferred embodiment, the connecting hole 32 is positioned by being pin-connected to the positioning hole 11 through the positioning pin 4. Alternatively, the connecting hole 32 is positioned by being screwed to the positioning hole 11 with a screw, but not limited thereto.

[0078] The utility model integrates the centering and stopping functions, reduces the part of the stop pin, is beneficial to the quick meshing of the scroll disk, improves the low-speed load-carrying capacity of the compressor, and has a simple structure and reduces the cost.

[0079] The following refers to the attached Figures 1 to 8 to specifically introduce the structural features and working principle of the centering assembly of the compressor of the utility model.

[0080] The utility model is a novel eccentric structure of a vehicle compressor. The characteristic of this eccentric structure is to integrate the centering and stopping functions into one part. Referring to Figure 1 、 2 as shown, the balance weight 3 is fixed to the crankshaft by bolts. The upper half of the eccentric swing sleeve 2 is matched with the crank cylindrical section to ensure the positioning accuracy and normal rotation of the moving disk assembly (see Figure 9 ). At the first end of the crankshaft 1 in the utility model, an eccentric crank 10 and a positioning hole 11 are provided. The eccentric crank 10 includes a stop block 12 (stop section) and a crank 13 (operating cooperation section) arranged coaxially. In the eccentric crank 10 of the utility model, two functions of stopping and operating cooperation are simultaneously compatible, realizing function integration. Both ends of the stop block 12 are respectively connected to the first end and the crank 13. The balance weight 3 has a socket hole 31 and a connecting hole 32. The socket hole 31 is sleeved on the stop block 12, and the connecting hole 32 is connected in alignment with the positioning hole 11. An irregular hole 22 and an eccentric hole 21 are coaxially arranged in the eccentric swing sleeve 2. The crank 13 first passes through the irregular hole 22 and then is inserted into the eccentric hole 21. The stop block 12 is sleeved and limited by the irregular hole 22. The cross-section of the irregular hole 22 is a pattern that limits the bidirectional rotation angle of the stop block 12. The eccentric crank 10 can be heat-treated to improve hardness and prevent damage caused by stop impacts.

[0081] The cross-section of the stop block 12 is a first pattern obtained by parallel shaving and two-side machining of a circle, and the first pattern has two first arc edges 121 and two straight edges 122. The special-shaped hole 22 is a pattern formed by butt-jointing two fan-shaped holes back to back, and a waist-reducing stop portion 222 is formed at the butt-joint. The first arc edges 121 at both ends of the stop portion rotate along the second arc edge 221 of the fan-shaped hole until the straight edge 122 is stopped by the waist-reducing stop portion 222. Continue to refer to Figures 5 to 8 as shown. The upper half of the eccentric swing sleeve 2 is a special-shaped hole 22, which is used to control the centroid of the moving disk assembly by rotating around the crank 13 of the crankshaft 1. The lower half of the eccentric swing sleeve 2 is a special-shaped hole 22, and the protruding part in the special-shaped hole 22 controls the range of the rotation angle. Since the special-shaped hole 22 only functions as a stop, only the lateral stop surface contacts the crankshaft stop surface, and the requirement for surface roughness is not high. It can be manufactured by processing methods such as forging and powder metallurgy. The other surfaces can be machined by turning to ensure high precision and low roughness. The length of the second arc edge 221 and the length of the first arc edge 121 can jointly control the retraction distance of the moving disk assembly. Due to the contact force of the moving disk assembly, the eccentric swing sleeve 2 has a rotational tendency in the axial direction under the action of torque, and moreover, the eccentric hole 21 of the eccentric swing sleeve 2 does not contact the crankshaft 1 most of the time, which can prevent wear. There is a clearance fit between the second arc edge 221 and the first arc edge 121, and the straight edge 122 is in surface contact with the waist-reducing stop portion 222. The central angle corresponding to the fan-shaped hole is 60°. A long shaft 14 is formed at the second end of the crankshaft 1, and a main balance block 15 connecting the long shaft 14 is provided at the first end of the crankshaft 1. The eccentric crank 10 and the positioning hole 11 are arranged on the side of the main balance block 15 away from the long shaft 14. The stop block 12 is connected to the side of the main balance block 15 away from the long shaft 14, and the eccentric crank 10 is connected to the side of the stop block 12 away from the main balance block 15. The connecting hole 32 is pin-connected and positioned (interference-fixed) with the positioning hole 11 through the positioning pin 4; or, the connecting hole 32 is screwed and positioned with the positioning hole 11 through a screw, so that the balance block 3 and the crankshaft 1 are integrated

[0082] The present utility model makes a new design for the eccentric swing sleeve 2, integrates the centering and stopping functions into one part, and cancels the part - stop pin by the cooperation of the eccentric swing sleeve and the crankshaft; and separates the centering part and the balance block 3 to reduce the mass of the moving disk assembly and the centering part. Compared with the prior art, the present utility model reduces the overall mass of the moving disk assembly and the centering part, thereby accelerating the hybrid speed of the compressor scroll disk, and finally being able to achieve the rapid meshing of the compressor scroll disk. This enables the compressor to start quickly, enhances the low-speed load-carrying capacity of the compressor, and improves the compression efficiency and operating range of the compressor. The eccentric swing sleeve 2 is provided with a stop surface to limit the retraction angle of the moving disk, ensuring that the moving disk assembly can retract to the normal operating position after discharging the liquid. At the same time, the fitting relationships of the centering structure parts in the present utility model are all clearance fits, and the overall machine assembly is more convenient, improving the production efficiency.

[0083] Figure 9 is a partial cross-sectional view of the scroll compressor of the present utility model. Figure 10 is a schematic view showing one side of the stop block being stopped when the scroll compressor is working. Figure 11 is Figure 10 the enlarged partial view in

[0084] Figure 12 is a schematic view showing the other side of the stop block being stopped when the scroll compressor is working. Figure 13 is Figure 12 the enlarged partial view in Figures 9 to 13 As shown, the present utility model also provides a scroll compressor 5, including the compressor alignment component as described above. Among them, the motor 54 of the scroll compressor 5 drives the crankshaft 1 to rotate, the main bearing 51 supports the outer periphery of the main balance block 15 of the crankshaft 1, and the scroll bearing 53 of the moving scroll 52 is sleeved on the outer periphery of the eccentric swing sleeve 2. Its technical features and technical effects are as described above and will not be elaborated here.

[0085] Continuing to refer to Figures 10 to 13 , which respectively show the normal operation state and the state when the moving disk assembly produces a retraction of the moving disk assembly. When the compressor starts to work, the motor 54 drives the crankshaft 1 to start rotating, and the stop block 12 of the crankshaft 1 drives the alignment part of the eccentric swing sleeve 2 to rotate. Since the balance block 3 is fixed on the crankshaft, the balance block 3 does not act on the crank. At this time, the alignment part and the moving scroll 52 in contact with it move in the direction of the scroll spiral engagement under the action of the crank of the crankshaft, ensuring the engagement of the scroll spiral. The above process is the normal starting operation state of the compressor components. During the operation of the moving and static disks of the compressor, when the movement radius of the moving disk assembly is the eccentricity, the tooth walls of the moving and static disks are engaged, and the compressor operates normally. Refer to Figure 10 , 11 shown, rotating clockwise around the crank. When there is liquid in the compression chamber, the contact force of the scroll teeth increases, and the moving disk assembly and the alignment assembly rotate and retract around the crank. Continuing to refer to Figure 12 , 13 shown, rotating counterclockwise around the crank, with the movement radius less than the eccentricity, the moving and static disks are disengaged, and there is a gap between the scroll tooth parts, allowing the liquid to be discharged. After the liquid is discharged, the contact force of the scroll teeth decreases, and under the combined action of the centrifugal force and the crank of the crankshaft, it continues to rotate clockwise around the crank to the normal operation position. To ensure that the eccentric swing sleeve 2 can still rotate back to the normal position under the combined force after retraction, the central angle corresponding to the special-shaped hole inside the eccentric swing sleeve 2 needs to be within 60 degrees. And, axially, the eccentric swing sleeve 2 can contact the inner hole of the moving disk bearing through the axial limiting section to limit the axial movement.

[0086] In summary, the centering assembly of the compressor of the present utility model and the scroll compressor can utilize the special structures of the eccentric swing sleeve and the crankshaft to ensure the meshing effect during the low-speed operation of the compressor, enabling the compressor to quickly enter the meshing state, improving the low-speed load-carrying capacity and energy efficiency of the compressor, and reducing the manufacturing cost.

[0087] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present utility model.

Claims

1. A compressor alignment component, characterized in that, Comprising: A crankshaft (1), a first end of the crankshaft (1) is provided with an eccentric crank (10) and a positioning hole (11), the eccentric crank (10) includes a stop block (12) and a crank (13) arranged coaxially, two ends of the stop block (12) are respectively connected to the first end and the crank (13); A balance weight (3), the balance weight (3) has a socket hole (31) and a connection hole (32), the socket hole (31) is sleeved on the stop block (12), and the connection hole (32) is connected in alignment with the positioning hole (11); and An eccentric swing sleeve (2), the eccentric swing sleeve (2) is provided with a special-shaped hole (22) and an eccentric hole (21) arranged coaxially, the crank (13) first passes through the special-shaped hole (22) and then is inserted into the eccentric hole (21), the stop block (12) is sleeved and limited by the special-shaped hole (22), and a cross-section of the special-shaped hole (22) is a pattern that limits a two-way rotation angle of the stop block (12).

2. The centering assembly of the compressor according to claim 1, characterized in that, A cross-section of the stop block (12) is a first pattern obtained by parallel cutting and chamfering both sides of a circle, and the first pattern has two first arc edges (121) and two straight edges (122).

3. The centering assembly of the compressor according to claim 2, wherein The special-shaped hole (22) is a pattern formed by butt-jointing two sector holes back to back, and a waist-shaped stop portion (222) is formed at the butt-joint, and the first arc edges (121) at both ends of the stop portion rotate along a second arc edge (221) of the sector hole until the straight edges (122) are stopped by the waist-shaped stop portion (222).

4. The centering assembly of the compressor according to claim 3, characterized in that, A clearance fit is provided between the second arc edge (221) and the first arc edge (121).

5. The centering assembly of the compressor according to claim 3, characterized in that A surface contact is provided between the straight edge (122) and the waist-shaped stop portion (222).

6. The centering assembly of the compressor according to claim 3, characterized in that, A central angle corresponding to the sector hole is 30° to 120°.

7. The centering assembly of the compressor according to claim 1, characterized in that, A second end of the crankshaft (1) forms a long shaft (14), a main balance weight (15) connecting the long shaft (14) is provided at a first end of the crankshaft (1), and the eccentric crank (10) and the positioning hole (11) are arranged on a side of the main balance weight (15) away from the long shaft (14).

8. The centering assembly of the compressor according to claim 7, characterized in that, The stop block (12) is connected to a side of the main balance weight (15) away from the long shaft (14), and the eccentric crank (10) is connected to a side of the stop block (12) away from the main balance weight (15).

9. The centering assembly of the compressor according to claim 1, characterized in that, The connection hole (32) is pin-connected and positioned with the positioning hole (11) through a positioning pin (4); or The connection hole (32) is screwed and positioned with the positioning hole (11) through a screw.

10. A scroll compressor, characterized in that, Including the compressor centering assembly as described in claim 1.

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