Compressor aligning assembly and scroll compressor

Abstract

The invention provides a compressor aligning assembly and a scroll compressor, the compressor aligning assembly comprises a crankshaft, a 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 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 invention, 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 energy efficiency of the compressor are improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted refrigeration equipment, and in particular to a compressor centering component and a scroll compressor. Background Art

[0002] At present, new energy vehicles use all-electric variable frequency scroll compressors for air conditioning cooling and heating. Since the electric scroll compressor for vehicles uses centrifugal force, the movable scroll and the static scroll are meshed when the compressor is running, and the refrigerant gas is compressed by the rotation driven by the crankshaft. If the scroll of the compressor cannot mesh quickly, internal leakage will occur, which will cause the compressor performance to be low and the exhaust temperature to be high, affecting the operating range of the compressor.

[0003] Comparative document CN211449029U provides a scroll compressor and its eccentricity adjustment mechanism. The eccentricity adjustment mechanism includes: a crankshaft, including a main shaft and an eccentric part, the eccentric part is arranged at the first end of the main shaft; the first end of the main shaft is formed with a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are distributed along the circumference of the eccentric part; a limit pin, detachably connected to the first mounting hole; the limit pin includes a limit part and a mounting part, the limit part and the mounting part form a cam structure; a stop pin, arranged in the second mounting hole; and a limit swing sleeve, including an integrally formed balance block and a swing sleeve, the limit swing sleeve is rotatably connected to the eccentric part and the balance block and the swing sleeve are sequentially passed through by the eccentric part. The utility model can not only realize the precise control of the eccentricity of the scroll compressor, but also solve the noise problem caused by the use of 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 pendulum sleeve through the cam limit pin, and adjusts the center of mass of the moving plate assembly. However, the focus is on solving the problem of increased noise during the operation of the eccentric pendulum sleeve, and no more consideration is given to ensuring the meshing effect during operation.

[0004] Therefore, the present invention provides a compressor alignment assembly and a scroll compressor. Summary of the invention

[0005] In view of the problems in the prior art, the compressor aligning assembly and the scroll compressor of the present invention overcome the difficulties of the prior art, and can use the special structure of the eccentric swing sleeve and the crankshaft to ensure the meshing effect of the compressor when it is running at a low speed, so that the compressor can quickly enter the meshing state, thereby improving the low-speed load carrying capacity and energy efficiency of the compressor.

[0006] An embodiment of the present invention provides a compressor suspension assembly, comprising:

[0007] A crankshaft, wherein an eccentric crank and a positioning hole are provided at a first end of the crankshaft, wherein the eccentric crank comprises a coaxially arranged stop block and a crank, and two ends of the stop block are respectively connected to the first end and the crank;

[0008] A balancing block, the balancing block having a sleeve hole and a connecting hole, the sleeve hole is sleeved on the stop block, and the connecting hole is aligned and connected with the positioning hole; and

[0009] An eccentric swing sleeve, wherein the eccentric swing sleeve is provided with a coaxially arranged special-shaped hole and an eccentric hole, the crank first passes through the special-shaped hole and then is inserted into the eccentric hole, the stop block is 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 in which a circle is cut parallel to both sides, and the first pattern has two first arc edges and two straight edges.

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

[0012] Preferably, the second arc-shaped edge is clearance-fitted with the first circular arc edge.

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

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

[0015] Preferably, the second end of the crankshaft forms a long axis, the first end of the crankshaft is provided with a main balance block connected to the long axis, and the eccentric crank and the positioning hole are arranged on a side of the main balance block away from the long axis.

[0016] Preferably, the stop block is connected to a side of the main balancing block facing away from the major axis, and the eccentric crank is connected to a side of the stop block facing away from the main balancing block.

[0017] Preferably, the connection hole is positioned by a positioning pin connected to the positioning hole; or, the connection hole is positioned by a screw connected to the positioning hole.

[0018] An embodiment of the present invention further provides a scroll compressor, comprising the compressor centering assembly as described above.

[0019] The compressor centering assembly and scroll compressor of the present invention can utilize the special structure of the eccentric swing sleeve and the crankshaft to ensure the meshing effect of the compressor when it is running at a low speed, so that the compressor can quickly enter the meshing state, and improve 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, which reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0021] Figure 1 It is a stereoscopic view of the compressor alignment assembly of the present invention.

[0022] Figure 2 It is a side view of the compressor alignment assembly of the present invention.

[0023] Figure 3 It is a stereoscopic view of a crankshaft in a compressor alignment assembly of the present invention.

[0024] Figure 4 It is a stereoscopic diagram of a balancing block in a compressor centering assembly of the present invention.

[0025] Figure 5 It is a stereoscopic diagram of an eccentric swing sleeve in a compressor center-aligning assembly of the present invention.

[0026] Figure 6 It is a bottom schematic diagram of an eccentric swing sleeve in a compressor centering assembly of the present invention.

[0027] Figure 7 It is a top view of the eccentric swing sleeve in the compressor alignment assembly of the present invention.

[0028] Figure 8 yes Figure 7 Sectional view along AA direction.

[0029] Fig. 9 It is a partial cross-sectional view of the scroll compressor of the present invention.

[0030] Fig.10 This is a schematic diagram showing that one side of the stop block is stopped when the scroll compressor is working.

[0031] Fig.11 yes Fig.10 A partial enlarged view of the .

[0032] Fig.12 It is a schematic diagram showing that the other side of the stop block is stopped when the scroll compressor is working.

[0033] Fig.13 yes Fig.12 A partial enlarged view of the .

[0034] Reference numerals

[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 axis

[0043] 15 Main balance weight

[0044] 2 Eccentric swivel sleeve

[0045] 21 Eccentric hole

[0046] 22 Special-shaped holes

[0047] 221 Second curved edge

[0048] 222 Waist stop

[0049] 3 Balance weight

[0050] 31 socket hole

[0051] 32 Connection holes

[0052] 4 Locating pins

[0053] 5 Scroll compressor

[0054] 51 Main bearing

[0055] 52 Moving scroll

[0056] 53 scroll bearing

[0057] 54 Motor DETAILED DESCRIPTION

[0058] The following describes the implementation methods of the present application through specific examples, and 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 methods, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0059] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0060] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] In order to clearly describe the present application, components irrelevant to the description are omitted, and the same reference symbols are given to the same or similar components throughout the specification.

[0063] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0064] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly" on another device, there are no other devices between it.

[0065] Although the terms first, second, etc. are used to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "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". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0066] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present application. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify 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 defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with the relevant technical literature and the contents of the current disclosure, and unless defined, shall not be overly interpreted as ideal or very formal meanings.

[0068] Figure 1 It is a stereoscopic view of the compressor alignment assembly of the present invention. Figure 2 It is a side view of the compressor alignment assembly of the present invention. Figure 3 It is a stereoscopic view of a crankshaft in a compressor alignment assembly of the present invention. Figure 4 It is a stereoscopic diagram of a balancing block in a compressor centering assembly of the present invention. Figure 5 It is a stereoscopic diagram of an eccentric swing sleeve in a compressor center-aligning assembly of the present invention. Figure 6 It is a bottom schematic diagram of an eccentric swing sleeve in a compressor centering assembly of the present invention. Figure 7 It is a top view of the eccentric swing sleeve in the compressor alignment assembly of the present invention. Figure 8 yes Figure 7 The cross-sectional view along the AA axis. Figures 1 to 8 As shown, the compressor centering assembly of the present invention comprises: a crankshaft 1, an eccentric swing sleeve 2 and a balancing block 3. Among them, the first end of the crankshaft 1 is provided with an eccentric crank 10 and a positioning hole 11, and the eccentric crank 10 comprises a coaxially arranged stop block 12 and a crank 13, and the two ends of the stop block 12 are respectively connected to the first end and the crank 13. The balancing block 3 has a sleeve hole 31 and a connecting hole 32, the sleeve hole 31 is sleeved on the stop block 12, and the connecting hole 32 is aligned and connected with the positioning hole 11. The eccentric swing sleeve 2 is provided with a coaxially arranged special-shaped hole 22 and an eccentric hole 21, the crank 13 first passes through the special-shaped hole 22 and then plugs into the eccentric hole 21, the stop block 12 is sleeved and limited by the special-shaped hole 22, and the cross section of the special-shaped hole 22 is a pattern that limits the two-way rotation angle of the stop block 12. The present invention provides a compressor with a self-aligning structure, which uses the special structure of the eccentric swing sleeve and the crankshaft to ensure the meshing effect of the compressor when it is running at a low speed, so that the compressor can quickly enter the meshing state, improve the low-speed load carrying capacity and energy efficiency of the compressor. At the same time, the self-aligning structure is designed in a split manner, which reduces 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 cut parallel to both sides, 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 special-shaped hole 22 is a pattern of two fan-shaped holes butted against each other, and a waisted stopper 222 is formed at the butt joint, and the first arc edges 121 at both ends of the stopper rotate along the second arc edge 221 of the fan-shaped hole until the straight edge 122 is stopped by the waisted stopper 222. The fan-shaped hole in the present invention can more accurately control the rotation angle of the stopper 12 and optimize the motion trajectory of the stopper 12 and the crank 13 during the stopping process, but is not limited thereto.

[0071] In a preferred embodiment, the special-shaped hole 22 is a fan-shaped hole, and the straight edges on both sides of the fan-shaped hole are used to stop the straight edge 122 of the stop portion, but the present invention is not limited thereto.

[0072] In a preferred embodiment, the second arc edge 221 and the first arc edge 121 are clearance-fitted, but the present invention is not limited thereto.

[0073] In a preferred embodiment, the straight edge 122 is in surface contact with the waist-tightening stop portion 222 , but the present invention is not limited thereto.

[0074] In a preferred embodiment, the central angle of the fan-shaped hole is 30° to 120°, but not limited thereto.

[0075] In a preferred embodiment, the second end of the crankshaft 1 forms a long axis 14, and the first end of the crankshaft 1 is provided with a main balance block 15 connected to the long axis 14, and the eccentric crank 10 and the positioning hole 11 are arranged on the side of the main balance block 15 away from the long axis 14, but not limited to this.

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

[0077] In a preferred embodiment, the connection hole 32 is positioned by pinning the positioning pin 4 with the positioning hole 11. Alternatively, the connection hole 32 is positioned by screwing the screw with the positioning hole 11, but the present invention is not limited thereto.

[0078] The invention integrates the functions of centering and stopping, reduces the number of stop pins, is conducive to the rapid engagement of the scroll plate, and improves the low-speed load carrying capacity of the compressor, and has a simple structure and reduces costs.

[0079] The following reference manual is attached Figures 1 to 8 The structural features and working principle of the compressor centering assembly of the present invention are specifically introduced.

[0080] The present invention is a new eccentric structure of a vehicle compressor. The eccentric structure is characterized in that the centering and stop functions are integrated into one part. Figure 1 , 2 As shown, the balance block 3 is fixed to the crankshaft by bolts, and the upper half of the eccentric pendulum sleeve 2 cooperates with the cylindrical section of the crank to ensure that the moving plate assembly (see Fig. 9 ) positioning accuracy and normal rotation. The first end of the crankshaft 1 in the present invention is provided with an eccentric crank 10 and a positioning hole 11. The eccentric crank 10 includes a coaxially arranged stop block 12 (stop section) and a crank 13 (operation matching section). The present invention simultaneously integrates the two functions of stop and operation matching in the eccentric crank 10, realizing functional integration. The two ends of the stop block 12 are respectively connected to the first end and the crank 13. The balancing block 3 has a sleeve hole 31 and a connecting hole 32. The sleeve hole 31 is sleeved on the stop block 12, and the connecting hole 32 is aligned with the positioning hole 11. The eccentric swing sleeve 2 is provided with a coaxially arranged special-shaped hole 22 and an eccentric hole 21. 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. The cross section of the special-shaped hole 22 is a pattern that limits the two-way rotation angle of the stop block 12. The eccentric crank 10 can be heat treated to increase its hardness and prevent damage caused by impact with a stopper.

[0081] The cross section of the stopper 12 is a first pattern after a circle is cut parallel to both sides, and the first pattern has two first arc edges 121 and two straight edges 122. The special-shaped hole 22 is a pattern after two fan-shaped holes are butted back to back, and a waisted stopper 222 is formed at the butt joint. The first arc edges 121 at both ends of the stopper rotate along the second arc edge 221 of the fan-shaped hole until the straight edge 122 is stopped by the waisted stopper 222. Figures 5 to 8 As shown. The upper half of the eccentric pendulum sleeve 2 is a special-shaped hole 22, which is used to control the center of mass of the moving disc assembly by rotating around the crank 13 of the crankshaft 1. The lower half of the eccentric pendulum sleeve 2 is a special-shaped hole 22, and the raised part in the special-shaped hole 22 controls the rotation angle range. Since the special-shaped hole 22 only serves as a stopper, only the lateral stop surface is in contact with the crankshaft stop surface, and the surface roughness requirement is not high, and it can be manufactured by forging, powder metallurgy and other processing methods. The remaining surfaces can be machined 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 disc assembly. Due to the contact force of the moving disc assembly, the eccentric pendulum sleeve 2 tends to rotate in the axial direction under the action of the torque, and the eccentric hole 21 of the eccentric pendulum sleeve 2 is not in contact with the crankshaft 1 most of the time, which can prevent wear. The second arc edge 221 is clearance-fitted with the first arc edge 121, and the straight edge 122 is in surface contact with the waisted stopper 222. The central angle corresponding to the fan-shaped hole is 60°. The second end of the crankshaft 1 forms a long axis 14, and the first end of the crankshaft 1 is provided with a main balancing block 15 connected to the long axis 14, and the eccentric crank 10 and the positioning hole 11 are arranged on the side of the main balancing block 15 away from the long axis 14. The stop block 12 is connected to the side of the main balancing block 15 away from the long axis 14, and the eccentric crank 10 is connected to the side of the stop block 12 away from the main balancing block 15. The connecting hole 32 is positioned by pinning with the positioning hole 11 through the locating pin 4 (interference fixing); or, the connecting hole 32 is positioned by screwing with the positioning hole 11 through a screw, so that the balancing block 3 is integrated with the crankshaft 1

[0082] The present invention redesigns the eccentric swing sleeve 2, integrates the centering and stop functions into one part, and eliminates the stop pin part by cooperating with the crankshaft through the eccentric swing sleeve; and separates the centering part and the balancing block 3 to reduce the mass of the moving disc assembly and the centering part. Compared with the prior art, the present invention reduces the overall mass of the moving disc assembly and the centering part, thereby accelerating the hybrid speed of the compressor scroll, and ultimately achieving rapid engagement of the compressor scroll. This allows the compressor to start quickly, enhances the low-speed load 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 retreat angle of the moving disc, ensuring that the moving disc assembly can retreat to the normal operating position after the liquid is discharged. At the same time, the matching relationship of the parts of the centering structure of the present invention is clearance matching, which makes the assembly of the whole machine more convenient and improves production efficiency.

[0083] Fig. 9 It is a partial cross-sectional view of the scroll compressor of the present invention. Fig.10 This is a schematic diagram showing that one side of the stop block is stopped when the scroll compressor is working. Fig.11 yes Fig.10 A partial enlarged view of the . Fig.12 It is a schematic diagram showing that the other side of the stop block is stopped when the scroll compressor is working. Fig.13 yes Fig.12 A partial enlarged view of the Figures 9 to 13 As shown, the present invention also provides a scroll compressor 5, including the compressor centering assembly as described above. 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 movable 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 repeated here.

[0084] Continue to refer Figures 10 to 13 , respectively showing the states of the moving disc assembly when it is in normal operation and when it is backed off. When the compressor starts working, the motor 54 drives the crankshaft 1 to start rotating, and the stop block 12 of the crankshaft 1 drives the centering part of the eccentric swing sleeve 2 to rotate. Since the balancing block 3 is fixed on the crankshaft, the balancing block 3 does not act on the crank. At this time, the centering part and the moving scroll 52 in contact with it move in the direction of the vortex spiral meshing under the action of the crankshaft crank, so that the spiral meshing of the vortex is guaranteed. The above process is the normal operation state of the compressor starting components. During the operation of the moving and static discs of the compressor, when the moving radius of the moving disc assembly is the eccentric distance, the tooth walls of the moving and static discs are meshed, and the compressor operates normally. Refer to Fig.10 , 11 As shown, it rotates clockwise around the crank. When there is liquid in the compression chamber, the contact force of the volute increases, and the moving plate assembly and the centering assembly rotate back around the crank. Fig.12 , 13 As shown, it rotates counterclockwise around the crank, the movement radius is smaller than the eccentricity, the moving and stationary plates are disengaged, and there is a gap in the scroll gear, allowing the liquid to be discharged. After the liquid is discharged, the contact force of the scroll teeth is reduced, and under the combined action of centrifugal force and the crankshaft crank, it continues to rotate clockwise around the crank to the normal operating position. In order to ensure that the eccentric pendulum sleeve 2 can still rotate back to the normal position under the combined force after retreating, the central angle corresponding to the special-shaped hole inside the eccentric pendulum sleeve 2 must be within 60 degrees. In addition, in the axial direction, the eccentric pendulum sleeve 2 can contact the inner hole of the moving plate bearing through the axial limit section to limit axial movement.

[0085] In summary, the compressor alignment assembly and the scroll compressor of the present invention can utilize the special structure of the eccentric swing sleeve and the crankshaft to ensure the meshing effect when the compressor is running at low speed, so that the compressor can quickly enter the meshing state, improve the low-speed load capacity and energy efficiency of the compressor, and reduce the manufacturing cost.

[0086] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A compressor alignment assembly, characterized in that: include: A crankshaft (1), wherein a first end of the crankshaft (1) is provided with an eccentric crank (10) and a positioning hole (11), the eccentric crank (10) comprises a coaxially arranged stop block (12) and a crank (13), and two ends of the stop block (12) are respectively connected to the first end and the crank (13); A balancing block (3), the balancing block (3) having a sleeve hole (31) and a connecting hole (32), the sleeve hole (31) being sleeved on the stop block (12), and the connecting hole (32) being aligned and connected with the positioning hole (11); and An eccentric swing sleeve (2), wherein the eccentric swing sleeve (2) is provided with a coaxially arranged special-shaped hole (22) and an eccentric hole (21), wherein the crank (13) first passes through the special-shaped hole (22) and then plugs into the eccentric hole (21), wherein the stop block (12) is sleeved and limited by the special-shaped hole (22), and the cross section of the special-shaped hole (22) is a pattern that limits the bidirectional rotation angle of the stop block (12).

2. The compressor centering assembly according to claim 1, characterized in that: The cross section of the stop block (12) is a first pattern in which a circle is cut parallel to the sides, and the first pattern has two first arc edges (121) and two straight edges (122).

3. The compressor centering assembly according to claim 2, characterized in that: The special-shaped hole (22) is a pattern of two fan-shaped holes connected back to back, and a waist-tightening stopper (222) is formed at the joint, and the first arc edges (121) at both ends of the stopper rotate along the second arc edge (221) of the fan-shaped hole until the straight edge (122) is stopped by the waist-tightening stopper (222).

4. The compressor centering assembly according to claim 3, characterized in that: The second arc-shaped edge (221) is clearance-fitted with the first circular arc edge (121).

5. The compressor centering assembly according to claim 3, characterized in that: The straight edge (122) is in surface contact with the waist-tightening stop portion (222).

6. The compressor centering assembly according to claim 3, characterized in that: The central angle of the fan-shaped hole is 30° to 120°.

7. The compressor alignment assembly according to claim 1, characterized in that: The second end of the crankshaft (1) forms a long axis (14), the first end of the crankshaft (1) is provided with a main balance block (15) connected to the long axis (14), and the eccentric crank (10) and the positioning hole (11) are arranged on a side of the main balance block (15) away from the long axis (14).

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

9. The compressor alignment assembly according to claim 1, characterized in that: The connection hole (32) is positioned by pinning with the positioning hole (11) via a positioning pin (4); or The connection hole (32) is screwed and positioned with the positioning hole (11) by means of screws.

10. A scroll compressor, characterized in that: It comprises the compressor centering assembly as claimed in claim 1.

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