Scroll compressor and assembly method of scroll compressor

Abstract

The present disclosure relates to a scroll compressor and an assembling method thereof, which adopts split balance blocks to meet different balance block requirements by changing the weight and / or shape of the movable blocks, and further puts the movable blocks into the accommodating cavities through the through holes in the thrust faces or the radial through holes during assembly, then pushes the movable blocks to move radially relative to the fixed blocks to the preset positions, and finally fixes the movable blocks on the fixed blocks. In this way, the balance blocks can be installed in the frame to maintain better balance effect, and the factor that the overall outer diameter of the balance blocks is limited by the size of the through holes in the thrust faces is eliminated, so that the balance blocks with appropriate outer diameters can be selected according to actual needs, and the scroll compressor is reliable, low in cost and good in balance effect.

Description

Technical Field

[0001] This disclosure relates to the field of compressor technology, and in particular to a scroll compressor and a method for assembling the scroll compressor. Background Technology

[0002] As a typical compressor structure, scroll compressors are mainly used in air conditioning, refrigeration, general gas compression, and in automotive engine turbochargers and vacuum pumps. They can replace traditional medium and small reciprocating compressors in a wide range of applications.

[0003] A scroll compressor typically comprises a compression mechanism consisting of a stationary scroll component and a moving scroll component. The moving scroll component is supported by a main bearing housing / thrust plate to provide axial restraint and rotates translationally relative to the stationary scroll component under the drive of an eccentric component, such as an eccentric shaft. During operation of the scroll compressor, the centrifugal force or torque generated by the rotation of the eccentric component causes vibration of the compressor. Counterweights are typically placed on the rotating components, such as the rotor, to provide a counter-centrifugal force or torque to balance the dynamic imbalance generated by the eccentric component.

[0004] The arrangement schemes of the balance blocks of a scroll compressor are mainly divided into two types: inside the frame and outside the frame.

[0005] The advantages of an internal arrangement are that it's closer to the imbalance area, reducing the cost of addressing the unbalanced torque, decreasing pressure on the drive shaft, and increasing reliability. Simultaneously, the rotation of the balance weight agitates the lubricating oil, ensuring oil supply to the thrust surface and improving the reliability of the thrust bearing. The disadvantage is that the balance weight needs to be placed inside the frame, and its outer diameter is limited by the opening in the frame's thrust surface. However, the contradiction lies in the fact that a larger outer diameter requires less mass; a larger outer diameter results in a larger balance weight volume, necessitating a correspondingly larger frame to accommodate it. Therefore, the frame and balance weight structure is bulky and costly.

[0006] The advantage of external balancing is that the counterweights are not limited by the frame, resulting in lower cost and simpler structure. However, the balancing effect is poor, and the reliability of the bearings deteriorates.

[0007] In view of this, those skilled in the art urgently need to improve the structure of scroll compressors so that they can have the characteristics of simple structure, low cost and good balance. Summary of the Invention

[0008] This disclosure aims to solve the technical problems existing in the prior art by providing a scroll compressor and a method for assembling the scroll compressor.

[0009] On one hand, this disclosure provides a scroll compressor, which includes:

[0010] A frame is configured to connect to the stationary scroll of the scroll compressor and to support the moving scroll of the scroll compressor, and the frame has a receiving cavity and a thrust surface through hole communicating with the receiving cavity, the thrust surface through hole being formed on the thrust surface of the frame supporting the moving scroll.

[0011] A drive shaft passes through the frame and through the thrust surface through-hole to drive the moving scroll to rotate relative to the stationary scroll in a translational motion.

[0012] A balance block, disposed on the drive shaft, and configured to provide a reverse centrifugal force or centrifugal torque to balance the dynamic imbalance generated by the eccentric segment of the drive shaft; the balance block includes:

[0013] A fixing block is configured to be inserted into the receiving cavity through the thrust surface through hole and fixedly connected to the drive shaft;

[0014] The movable block is configured to be inserted into the receiving cavity through the thrust surface through-hole, and then move radially away from the drive shaft to a preset position, where it is connected to the fixed block; or,

[0015] The movable block is configured to be inserted into the receiving cavity through a radial through-hole in the frame, and then move radially toward a preset position toward the drive shaft and be connected to the fixed block.

[0016] In one embodiment, the scroll compressor further includes a plug configured to block the radial through-hole.

[0017] In one embodiment, the plug is statically sealed to the frame.

[0018] In one embodiment, the inner wall of the receiving cavity includes:

[0019] Conical surface;

[0020] The first cylindrical surface is formed by extending upward from the large-diameter end of the conical surface;

[0021] The annular surface is formed by extending radially inward from the upper end of the first cylindrical surface;

[0022] The frame also has a second cylindrical surface, which is formed by extending downward from the small-diameter end of the conical surface;

[0023] The drive shaft passes through the second cylindrical surface, the conical surface, the first cylindrical surface, and the annular surface in sequence. The fixed block is located in the space surrounded by the conical surface, the movable block is located in the space surrounded by the first cylindrical surface, and the thrust surface through hole is opened on the annular surface.

[0024] In one embodiment, the movable block moves radially relative to the fixed block via a matching guide groove and guide boss;

[0025] One of the guide groove and the guide boss is disposed on the fixed block, and the other is disposed on the movable block.

[0026] In one embodiment, the guide groove is a radially extending wedge-shaped groove, and correspondingly, the guide boss is a radially extending wedge-shaped boss.

[0027] In one embodiment, the movable block is detachably connected to the fixed block by fasteners.

[0028] In one embodiment, the rack includes:

[0029] The main body is configured to support the moving scroll and has the receiving cavity provided therein;

[0030] At least two connecting arms are arranged circumferentially at intervals on the outer peripheral wall of the main body, and each connecting arm extends radially outward from the main body and is connected to the stationary volute.

[0031] On the other hand, this disclosure also provides a method for assembling a scroll compressor, specifically a scroll compressor as described in any of the above embodiments, the assembly method comprising the following steps:

[0032] The fixing block is placed into the receiving cavity through the thrust surface through hole and connected to the drive shaft;

[0033] The movable block is placed into the receiving cavity through the thrust surface through-hole;

[0034] The movable block is pushed to move radially away from the drive shaft relative to the fixed block to a preset position;

[0035] Connect the movable block to the fixed block; or...

[0036] The fixing block is placed into the receiving cavity through the thrust surface through hole and connected to the drive shaft;

[0037] The movable block is placed into the receiving cavity through the radial through-hole;

[0038] The movable block is pushed to move radially toward a preset position relative to the fixed block, toward the drive shaft.

[0039] The movable block is connected to the fixed block.

[0040] In one embodiment, after the movable block is connected to the fixed block, the assembly method further includes the following steps:

[0041] Seal the radial through-hole.

[0042] One of the beneficial effects of the scroll compressor and its assembly method disclosed herein is that the scroll compressor adopts a split-type balance block, which can meet different balance block requirements by changing the weight and / or shape of the movable block. Furthermore, during assembly, the movable block is placed into the receiving cavity through the thrust surface through-hole or radial through-hole, and then pushed radially relative to the fixed block to a preset position. Finally, the movable block is fixedly connected to the fixed block. This design not only allows the balance block to be installed within the frame to maintain better balance, but also eliminates the limitation of the overall outer diameter of the balance block by the size of the thrust surface through-hole. A balance block with an appropriate outer diameter can be selected according to actual needs, resulting in a reliable, low-cost, and well-balanced scroll compressor. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0044] Figure 1 This is an axial cross-sectional view of the scroll compressor disclosed in this embodiment;

[0045] Figure 2 This is a schematic diagram of the exploded structure of the balance block of this disclosure in one embodiment;

[0046] Figure 3 This is a schematic diagram of the structure when the movable block is placed in the initial position of the rack in one embodiment;

[0047] Figure 4 This is a schematic diagram of the structure when the movable block is pushed to the preset position of the fixed block in one embodiment;

[0048] Figure 5 This is a schematic diagram of the structure after the active block and the fixed block are connected in one embodiment;

[0049] Figure 6 This is a flowchart of the assembly method of the scroll compressor disclosed herein;

[0050] Figure 7 This is a flowchart of another assembly method for the scroll compressor disclosed herein.

[0051] Figures 1 to 5 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0052] 1. Body, 2. Static vortex, 3. Dynamic vortex, 4. Drive shaft, 5. Frame, 50. Receiving cavity, 500. Conical surface, 501. First cylindrical surface, 502. Circular surface, 503. Second cylindrical surface, 51. Thrust surface through hole, 60. Fixing block, 600. Central hub portion, 601. Peripheral portion, 602. Second axially extending stepped section, 603. First mounting hole, 604. First flat radially inward surface, 605. First axially extending stepped section, 606. Second flat surface, 607. Rotation direction of the balance block, 61. Movable block, 610. Inner radial portion, 611. Outer radial portion, 612. Second mounting hole, 614. First flat radially outward surface, 615. Second axially extending section, 616. Second flat radially outward surface, 617. Third flat surface. Detailed Implementation

[0053] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0054] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0055] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0056] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0057] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0058] The scroll compressor disclosed herein includes a stationary scroll, a moving scroll, a frame, a drive shaft, and a counterweight. The frame is configured to connect to the stationary scroll and support the moving scroll, and the frame has a receiving cavity and a thrust surface through hole communicating with the receiving cavity. The thrust surface through hole is formed on the thrust surface of the frame supporting the moving scroll. The drive shaft passes through the frame and through the thrust surface through hole to drive the moving scroll to rotate translatively relative to the stationary scroll. The counterweight is disposed on the drive shaft and is configured to provide a reverse centrifugal force or centrifugal torque to balance the dynamic imbalance generated by the eccentric portion of the drive shaft. Furthermore, the balance block includes a fixed block and a movable block. The fixed block is configured to be inserted into the receiving cavity through the thrust face through hole and fixedly connected to the drive shaft. The movable block is configured to be inserted into the receiving cavity through the thrust face through hole and then move radially away from the drive shaft to be connected with the balance block. Alternatively, the movable block is configured to be inserted into the receiving cavity through a radial through hole opened in the frame and then move radially towards the drive shaft to be connected with the balance block.

[0059] The scroll compressor disclosed herein employs a split-type balance block, allowing for the adaptation of different balance block requirements by varying the weight and / or shape of the movable block. During assembly, the movable block is placed into the receiving cavity through a thrust face through-hole or radial through-hole, and then pushed radially relative to the fixed block to a preset position. Finally, the movable block is fixedly connected to the fixed block. This design not only ensures better balance by mounting the balance block within the frame but also eliminates the limitation imposed by the size of the thrust face through-hole on the overall outer diameter of the balance block. A balance block with an appropriate outer diameter can be selected based on actual needs, resulting in a reliable, low-cost, and well-balanced scroll compressor.

[0060] For ease of understanding, please refer to the following: Figure 1 and Figure 2 The specific structure and working principle of the scroll compressor disclosed herein will be described in detail with reference to two specific embodiments.

[0061] It should be noted that the terms "axial, radial, and circumferential" used in this article when describing the specific structure of the scroll compressor are set with the drive shaft as the reference. The axial direction along the drive shaft is denoted as axial, the radial direction along the drive shaft is denoted as radial, and the circumferential direction along the drive shaft is denoted as circumferential.

[0062] Example 1

[0063] See Figure 1 In this embodiment, the scroll compressor includes a body 1, a stationary scroll 2, and a moving scroll 3.

[0064] The body 1 is usually a thin-walled shell structure, and its internal space is sufficient to accommodate the stationary volute 2, the moving volute 3, and the drive mechanism that drives the moving volute 3 to rotate around the stationary volute 2.

[0065] Both the stationary volute 2 and the moving volute 3 have volute-shaped blades, and they are offset by 180° and mesh with each other. The moving volute 3 is driven by a crankshaft with a very small eccentricity and constrained by an anti-rotation mechanism, making a planar motion with a small radius around the stationary volute 2, thereby forming a series of crescent-shaped cylindrical working volumes in conjunction with the end plate.

[0066] It should be noted that the specific structure of the body 1, the stationary vortex disk 2, and the moving vortex disk 3, as well as their mutual assembly relationship, can be described by those skilled in the art using existing technology, and will not be elaborated here.

[0067] See also Figure 1 The scroll compressor also includes a drive shaft 4, a frame 5, and a balance block.

[0068] The frame 5 is configured to connect with the stationary scroll 2 and support the moving scroll 3. The frame 4 has a receiving cavity 50 and a thrust surface through hole 51 communicating with the receiving cavity 50. The thrust surface through hole 51 is opened on the thrust surface of the frame 5 that supports the moving scroll 3.

[0069] In detail, the frame 5 includes a main body and four connecting arms 52. The main body is configured to support the moving scroll 3 and has a receiving cavity. The four connecting arms 52 are sequentially spaced along the outer peripheral wall of the main body, and each connecting arm 52 extends radially outward from the main body. The connecting arms 52 and the stationary scroll 2 are fixedly connected by welding, bonding, riveting, or can be detachably connected by fasteners such as screws and bolts. The top surface of the main body is a thrust surface, which contacts the moving scroll 3 to support it and allow it to rotate relative to the stationary scroll 2.

[0070] It is understood that the number of connecting arms 52 is not limited to that in this embodiment, as long as there are two or more integers, those skilled in the art can select an appropriate number based on the actual structure.

[0071] The drive shaft 4 includes a main shaft section and an eccentric shaft section connected to each other. The main shaft section is coaxially connected to the rotor of the drive motor and passes through the frame 5. The eccentric shaft section of the drive shaft 4 passes through the thrust surface through hole 51 of the frame and is connected to the moving scroll 3, so that the eccentric shaft section drives the moving scroll 3 to rotate relative to the stationary scroll 2.

[0072] The balance block is set up by key connection, welding, bonding and other methods to set the main shaft section of the drive shaft 4 so that it rotates synchronously with the drive shaft 4. It is constructed to provide reverse centrifugal force or centrifugal torque to balance the dynamic imbalance generated by the eccentric shaft section of the drive shaft.

[0073] See Figure 2In this embodiment, the balance block has a fixed block 60 and a movable block 61. The fixed block 60 has a central hub portion 600 and a peripheral portion 601, the peripheral portion 601 having one or more first mounting holes 603, while the movable block 61 has an inner radial portion 610 and an outer radial portion 611, the inner radial portion 610 having one or more second mounting holes 612. In this embodiment, the fixed block 60 has a substantially uniform thickness. In the movable block 61, the inner radial portion 610 has a first thickness, while the outer radial portion 611 has a second thickness. The first thickness is greater than the second thickness.

[0074] The peripheral portion 601 of the fixing block 60 includes a first axially extending stepped segment 605 having a first flat, radially inward surface 604. The terms "radially inward" and "radially outward" are used relative to the longitudinal axis of the drive shaft 4 when the balance block is assembled to the drive shaft 4. Figure 2 In the specific embodiment shown, the fixing block 60 includes a second axially extending stepped segment 602 having a second flat surface 606 perpendicular to the first flat radially inward surface 604. In the illustrated embodiment, the second flat surface 606 of the fixing block 60 faces the rotation direction of the balancing block (as indicated by arrow 607).

[0075] The inner radial portion 610 of the movable block 61 has a first axially extending segment 613 having a first flat radially outward surface 614. The inner radial portion 610 also includes a second axially extending segment 615 having a second flat radially outward surface 616 and a third flat surface 617. The third flat surface 617 is perpendicular to the first flat radially outward surface 614 and the second flat radially outward surface 616. When the movable block 61 is attached to the fixed block 60, the third flat surface 617 faces the opposite direction to the rotation direction of the balance block (as indicated by arrow 607).

[0076] The first flat radially outward surface 614 and the second flat radially outward surface 616 are configured to abut against the first flat radially inward surface 604 on the fixed block 60 to facilitate positioning of the movable block 61 relative to the fixed block 60. The third flat surface 617 of the movable block 61 is configured to abut against the second flat surface 606 of the fixed block 60 to facilitate positioning of the movable block 61 relative to the fixed block 60. Furthermore, the interfaces of the first flat radially outward surface 614 and the second flat radially outward surface 616 with the first flat radially inward surface 604, and the interface of the second flat surface 606 of the fixed block with the third flat surface 617, absorb a portion of the centrifugal force generated when the counterweight rotates about the drive shaft 4.

[0077] Of course, in other embodiments, the movable block 61 moves radially relative to the fixed block 60 via a matching guide groove and guide boss; wherein, the guide groove is disposed on the fixed block 60 and the guide boss is disposed on the movable block, or the guide groove is disposed on the movable block 61 and the guide boss is disposed on the fixed block 60. With this configuration, the movable block 61 moves relative to the fixed block 60 along the guide groove and guide boss, which can quickly complete the assembly task of the balance block.

[0078] Specifically, the guide groove is a wedge-shaped groove extending radially, and correspondingly, the guide boss is a wedge-shaped boss extending radially.

[0079] During assembly, the retaining block 60 is configured to be inserted into the receiving cavity 50 through the thrust surface through hole 51 and fixedly connected to the drive shaft 4, see [reference]. Figure 3 The movable block is configured to be inserted into the receiving cavity 50 through the thrust surface through hole 51, and then the movable block 61 is pushed to move radially away from the drive shaft 4. Figure 4 The movable block 61 is then detachably connected to the fixed block 60 using screws, bolts, or other fasteners at the preset position shown. Figure 5 As shown, the movable block 61 can be fixedly connected to the fixed block 60 by means of welding, bonding or riveting.

[0080] To further optimize the structure of rack 5 and minimize its overall size while still meeting assembly requirements, see [link to relevant documentation]. Figure 1 The inner wall of the receiving cavity includes a conical surface 500, a first cylindrical surface 501, and an annular surface 502, and the main body of the frame 5 also has a second cylindrical surface 503. The first cylindrical surface 501 extends upward from the large-diameter end of the conical surface 500, the second cylindrical surface 503 extends downward from the small-diameter end of the conical surface 500, and the annular surface 502 extends radially inward from the upper end of the first cylindrical surface 501.

[0081] The drive shaft 4 passes through the second cylindrical surface 503, the conical surface 500, the first cylindrical surface 501, and the annular surface 503 in sequence. The fixed block 60 is located in the space surrounded by the conical surface 500, and the movable block 61 is located in the space surrounded by the first cylindrical surface 501. The thrust surface through hole 51 is opened on the annular surface 502.

[0082] Example 2

[0083] Compared with Embodiment 1, the main difference in Embodiment 2 is that a radial through hole (not shown in the figure) is provided on the frame 5. The movable block 6 is configured to be inserted into the receiving cavity 50 through the radial through hole, and then pushed to move radially towards the drive shaft 4 to a preset position. Finally, the movable block 61 is connected to the fixed block 60. The other parts are the same as in Embodiment 1. Those skilled in the art can fully understand this based on the description of Embodiment 1 above and the accompanying drawings, so it will not be repeated here.

[0084] Furthermore, the scroll compressor includes a plug (not shown in the figure) configured to block the radial through-hole to prevent external dust from falling into the receiving cavity 50 through the radial through-hole. Specifically, the plug can be a bolt with a nut, and the frame 5 is provided with an internal thread adapted to the bolt. After the movable block 61 and the fixed block 60 are assembled, the bolt can be screwed into the radial through-hole.

[0085] More specifically, the plug is sealed to the frame 4 by means of a sealing ring, such as an O-ring seal between the bolt nut and the opposite surface of the frame.

[0086] In addition, based on the two structures of the scroll compressor mentioned above, this disclosure also provides two assembly methods for the scroll compressor, which are described below in conjunction with... Figure 6 and Figure 7 Detailed Explanation. It should be noted that this article only describes the assembly method of the balance block; the assembly methods of other components of the scroll compressor are not limited here.

[0087] See Figure 1 and Figure 6 An assembly method for the scroll compressor disclosed herein includes the following steps:

[0088] S100, The fixing block 60 is placed into the receiving cavity 50 through the thrust surface through hole 51 and connected to the drive shaft 4;

[0089] S101. Insert the movable block 61 into the receiving cavity 50 through the thrust surface through hole 51.

[0090] S102, Push the movable block 61 to move radially away from the drive shaft 4 relative to the fixed block 60 to a preset position;

[0091] S103. Connect the movable block 61 to the fixed block 60.

[0092] See Figure 7 Another assembly method of the scroll compressor disclosed herein includes the following steps:

[0093] S200, The fixing block 60 is placed into the receiving cavity 50 through the thrust surface through hole 51 and connected to the drive shaft 4;

[0094] S202. Insert the movable block 61 into the receiving cavity 50 through the radial through hole;

[0095] S202, Push the movable block 61 to move radially toward the drive shaft 4 relative to the fixed block 60 to a preset position;

[0096] S203. Connect the movable block 61 to the fixed block 60.

[0097] See also Figure 7 In this embodiment, after step S203, the assembly method further includes the following steps:

[0098] S204. Seal the radial through hole.

[0099] In detail, the plug can be a bolt with a nut, and the frame 5 is provided with an internal thread that matches the bolt. After the movable block 61 and the fixed block 60 are assembled, the bolt can be screwed into the radial through hole.

[0100] More specifically, the plug is sealed to the frame 4 by means of a sealing ring, such as an O-ring seal between the bolt nut and the opposite surface of the frame.

[0101] Similarly, in both assembly methods described above, the movable block is placed into the receiving cavity through the thrust surface through-hole or radial through-hole, and then the movable block is pushed radially relative to the fixed block to a preset position. Finally, the movable block is fixedly connected to the fixed block. This configuration not only allows the balance block to be installed in the frame to maintain a better balance effect, but also eliminates the limitation of the overall outer diameter of the balance block by the size of the thrust surface through-hole. A balance block with an appropriate outer diameter can be selected according to actual needs, making the scroll compressor reliable, cost-effective, and with good balancing performance.

[0102] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A scroll compressor, characterized in that, include: A frame is configured to connect to the stationary scroll of the scroll compressor and to support the moving scroll of the scroll compressor, and the frame has a receiving cavity and a thrust surface through hole communicating with the receiving cavity, the thrust surface through hole being formed on the thrust surface of the frame supporting the moving scroll. A drive shaft passes through the frame and through the thrust surface through-hole to drive the moving scroll to rotate relative to the stationary scroll in a translational motion. A balance block, disposed on the drive shaft, and configured to provide a reverse centrifugal force or centrifugal torque to balance the dynamic imbalance generated by the eccentric segment of the drive shaft; the balance block includes: A fixing block is configured to be inserted into the receiving cavity through the thrust surface through hole and fixedly connected to the drive shaft; The movable block is configured to be inserted into the receiving cavity through the thrust surface through-hole, and then move radially away from the drive shaft to a preset position, where it is connected to the fixed block; or, The movable block is configured to be inserted into the receiving cavity through a radial through hole in the frame, and then move radially toward a preset position and be connected to the fixed block. The inner wall of the receiving cavity includes: Conical surface; The first cylindrical surface is formed by extending upward from the large-diameter end of the conical surface; The annular surface is formed by extending radially inward from the upper end of the first cylindrical surface; The movable block is located within the space surrounded by the first cylindrical surface, and the thrust surface through hole is formed on the annular surface.

2. The scroll compressor according to claim 1, characterized in that, The scroll compressor also includes a plug configured to block the radial through-hole.

3. The scroll compressor according to claim 2, characterized in that, The plug is statically sealed and connected to the frame.

4. The scroll compressor according to claim 1, characterized in that, The inner wall of the receiving cavity includes: The frame also has a second cylindrical surface, which is formed by extending downward from the small-diameter end of the conical surface; The drive shaft passes through the second cylindrical surface, the conical surface, the first cylindrical surface, and the annular surface in sequence, and the fixing block is located in the space surrounded by the conical surface.

5. The scroll compressor according to claim 1, characterized in that, The movable block moves radially relative to the fixed block via a matching guide groove and guide boss; One of the guide groove and the guide boss is disposed on the fixed block, and the other is disposed on the movable block.

6. The scroll compressor according to claim 5, characterized in that, The guide groove is a wedge-shaped groove extending radially, and correspondingly, the guide boss is a wedge-shaped boss extending radially.

7. The scroll compressor according to claim 1, characterized in that, The movable block is detachably connected to the fixed block by fasteners.

8. The scroll compressor according to claim 1, characterized in that, The rack includes: The main body is configured to support the moving scroll and has the receiving cavity provided therein; At least two connecting arms are arranged circumferentially at intervals on the outer peripheral wall of the main body, and each connecting arm extends radially outward from the main body and is connected to the stationary volute.

9. A method for assembling a scroll compressor, characterized in that, The scroll compressor is specifically the scroll compressor according to any one of claims 1 to 8, and the assembly method includes the following steps: The fixing block is placed into the receiving cavity through the thrust surface through hole and connected to the drive shaft; The movable block is placed into the receiving cavity through the thrust surface through-hole; The movable block is pushed to move radially away from the drive shaft relative to the fixed block to a preset position; Connect the movable block to the fixed block; or... The fixing block is placed into the receiving cavity through the thrust surface through hole and connected to the drive shaft; The movable block is placed into the receiving cavity through the radial through-hole; The movable block is pushed to move radially toward a preset position relative to the fixed block, toward the drive shaft. The movable block is connected to the fixed block.

10. The assembly method according to claim 9, characterized in that, After connecting the movable block to the fixed block, the assembly method further includes the following steps: Seal the radial through hole.

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