Positioning assembly for scroll compressor and scroll compressor

Abstract

The invention provides a positioning assembly for a scroll compressor and the scroll compressor with the positioning assembly. The positioning assembly comprises a first part and a second part which are installed in a matched mode. The first component is provided with a step part, and the step part comprises a first radial positioning face and a first axial positioning face. The second component is provided with a second radial positioning face and a second axial positioning face, and the second radial positioning face is matched with the first radial positioning face so as to conduct radial positioning on the first component. And the second axial positioning surface is matched with the first axial positioning surface to axially position the first component. A tool withdrawal groove located between the first radial positioning face and the first axial positioning face is formed in the first component. The tool withdrawal groove comprises a first side face, a second side face and a bottom face. The first side face and the second side face are parallel and inclined relative to the axial direction. According to the technical scheme, the positioning precision of the positioning assembly can be guaranteed, then the assembling precision of the scroll compressor can be guaranteed, and the performance of the scroll compressor can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and particularly relates to a positioning component for a scroll compressor and a scroll compressor. Background Art

[0002] Current scroll compressors generally include a housing located on the outside and a first scroll disk (e.g., a stationary scroll disk), a second scroll disk (e.g., a moving scroll disk), a crankshaft, a drive motor, and a support frame located inside the housing. The stationary scroll disk and the moving scroll disk cooperate to form a compression chamber. The support frame is fixed relative to the housing and axially supports the stationary scroll disk and the moving scroll disk.

[0003] To enable the scroll compressor to have good compression performance, precise positioning is required between various components to ensure the fitting accuracy between components. Currently, due to processing technology problems in scroll compressors, there is a problem of poor positioning accuracy between components, which affects the compression performance of the compressor. Summary of the Invention

[0004] In view of this, the present application provides a positioning component for a scroll compressor and a scroll compressor having the same, which improves the poor positioning accuracy between components in the scroll compressor.

[0005] On the one hand, an embodiment of the present application provides a positioning component for a scroll compressor. The positioning component includes a first component and a second component that are fitted and installed. A stepped portion is provided on the first component. The stepped portion includes a first radial positioning surface and a first axial positioning surface perpendicular to the first radial positioning surface. A second radial positioning surface and a second axial positioning surface are provided on the second component. The second radial positioning surface cooperates with the first radial positioning surface to radially position the first component, and the second axial positioning surface cooperates with the first axial positioning surface to axially position the first component. A relief groove is provided on the first component between the first radial positioning surface and the first axial positioning surface. The relief groove includes a first side surface close to the first radial positioning surface, a second side surface close to the first axial positioning surface, and a bottom surface between the first side surface and the second side surface; wherein, the first side surface and the second side surface are parallel and inclined relative to the axial direction.

[0006] In some embodiments, the bottom surface is semi-circular.

[0007] In some embodiments, the bottom surface is a plane, and fillets or chamfers are respectively formed between the bottom surface and the first side surface and the second side surface.

[0008] In some embodiments, the angle α between the first side surface and the second side surface and the axial direction is 15° - 75° or 35° - 55°.

[0009] In some embodiments, the angle α between the first side surface and the second side surface and the axial direction is 45°.

[0010] In some embodiments, the vertical distance d between the first side surface and the second side surface is 0.8 mm to 5 mm.

[0011] In some embodiments, the widths b of the first side surface and the second side surface in the depth direction of the relief groove are 0.1 mm to 10 mm or 0.1 mm to 4 mm respectively.

[0012] In some embodiments, the height h1 of the stepped portion in the axial direction is 2 mm to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 0.5 mm to 4 mm;

[0013] In some embodiments, the height h1 of the stepped portion in the axial direction is 3 mm to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 1.5 mm to 3.5 mm.

[0014] On the other hand, the present application also provides a scroll compressor, which includes a housing, a compression mechanism, a driving mechanism, and at least one positioning component described in any one of the above embodiments. The housing is provided with a suction port and a discharge port. The compression mechanism is accommodated in the housing and includes a first scroll disk and a second scroll disk. The scroll teeth of the first scroll disk and the scroll teeth of the second scroll disk have a matching structure to cooperate to form a compression chamber, and at least one of the first scroll disk and the second scroll disk is a moving scroll disk. The driving mechanism is used to drive the moving scroll disk to rotate, so as to compress the fluid from the suction port and discharge the compressed fluid from the discharge port.

[0015] In some embodiments, the at least one positioning component includes at least one of a first positioning component, a second positioning component, a third positioning component, a fourth positioning component, and a fifth positioning component. In the first positioning component, one of the first component and the second component is the stationary scroll disk of the scroll compressor, and the other is the support frame for supporting the stationary scroll disk. In the second positioning component, one of the first component and the second component is the support frame of the scroll compressor, and the other is the middle housing of the scroll compressor. In the third positioning component, one of the first component and the second component is the support frame of the scroll compressor, and the other is the upper end of the stator housing of the motor of the scroll compressor. In the fourth positioning component, one of the first component and the second component is the lower support seat located at the lower end of the motor of the scroll compressor, and the other is the lower end of the stator housing of the motor of the scroll compressor. In the fifth positioning component, one of the first component and the second component is the balance weight rotating with the crankshaft of the scroll compressor, and the other is the crankshaft of the scroll compressor.

[0016] The technical solution provided by the present application is beneficial to improving the radial and axial positioning accuracy of the first component and the second component assembled with each other in the scroll compressor, beneficial to improving the assembly accuracy of the scroll compressor, and thus can improve the compression performance of the scroll compressor.

[0017] Other features and advantages of the present application will be described in detail in the following detailed implementation section. Description of the Drawings

[0018] The drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application.

[0019] Figure 1 Schematic structural diagram for positioning two components in a comparative embodiment according to the present application.

[0020] Figure 2 Schematic structural diagram for positioning two components in another comparative embodiment according to the present application.

[0021] Figure 3 Schematic structural diagram for positioning two components in yet another comparative embodiment according to the present application.

[0022] Figure 4 Schematic structural diagram for positioning two components in an embodiment according to the present application.

[0023] Figure 5 Schematic structural diagram for positioning two components in another embodiment according to the present application.

[0024] Figure 6 Schematic structural diagram for positioning two components in an embodiment according to the present application.

[0025] Figure 7 Schematic structural diagram for positioning two components in another embodiment according to the present application.

[0026] Figure 8 Schematic structural diagram of a scroll compressor in an embodiment according to the present application. Detailed Implementation

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0028] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, "inner" and "outer" refer to the inner and outer of the contour of each component itself.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not 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" may explicitly or implicitly include at least one such feature.

[0030] The scroll compressor includes a compressor housing, on which a suction port and a discharge port are provided. The suction port is configured to supply refrigerant to be compressed to the scroll compressor, and the discharge port is configured to discharge the compressed refrigerant. The scroll compressor further includes a motor, a crankshaft, a compression unit, and a support frame disposed inside the compressor housing. The support frame is fixed relative to the compressor housing. The compression unit includes a first scroll disk (e.g., a stationary scroll disk) supported on the support frame and a second scroll disk (e.g., a moving scroll disk) that cooperates with the stationary scroll disk. The motor drives the crankshaft to rotate, and the crankshaft drives the moving scroll disk to move along a predetermined trajectory, so that the moving scroll disk cooperates with the stationary scroll disk to compress the refrigerant.

[0031] It should be noted that one of the first scroll disk and the second scroll disk may be a moving scroll disk and the other may be a stationary scroll disk, or both the first scroll disk and the second scroll disk may be moving scroll disks.

[0032] Each component of the compressor needs to have good positioning accuracy to ensure the cooperation accuracy between the first scroll disk and the second scroll disk, for example, to ensure the cooperation accuracy between the stationary scroll disk and the moving scroll disk, so as to ensure the compression performance of the compressor. The technical solution provided by the present application can effectively improve the positioning accuracy of the compressor components.

[0033] For the convenience of understanding the technical innovation points and beneficial effects of the technical solution to be protected by the present application, first, according to Figures 1 to 3 Provide some embodiments of comparative solutions.

[0034] Such as Figure 1 And Figure 2In the illustrated embodiment, a radial positioning surface 102 and an axial positioning surface 103 that cooperate with the support frame 200 are provided on the stationary scroll disk 100. To facilitate the machining of the positioning surfaces, a relief groove 101 is provided between the radial positioning surface 102 and the axial positioning surface 103. During machining, for example, when using the grinding tool 300 shown in Figure 1 to grind and form the radial positioning surface 102 and the axial positioning surface 103, a machining residual surface 104 will remain on the axial positioning surface 103 after the grinding tool 300 finishes grinding.

[0035] When the support frame 200 positions the stationary scroll disk 100, as shown in Figure 2 , the top surface of the support frame 200 will contact the machining residual surface 104. In this way, a gap G is formed between the support frame 200 and the stationary scroll disk 100, that is, the stationary scroll disk 100 will rise by a certain height compared to the normal design, which will cause the gap between the stationary scroll disk 100 and the mating orbiting scroll disk in the up and down directions to increase, resulting in the problem of leakage in the compressor. In addition, since the axial height of the part of the stationary scroll disk 100 below the axial positioning surface 103 is relatively low, as shown in Figure 2 , after the relief groove 101 is machined, the axial height of the formed radial positioning surface 102 is even lower, which will cause the radial positioning between the support frame 200 and the stationary scroll disk 100 to fail and affect the performance of the scroll compressor.

[0036] In Figure 3 the illustrated embodiment, the support frame 200 is cooperatively positioned with the middle housing 400 of the scroll compressor. An axial positioning surface 203 and a radial positioning surface 202 that cooperate with the middle housing 400 are formed on the support frame 200. In this embodiment, since the size of the stepped structure of the support frame 200 in the radial direction is relatively small, after the relief groove 201 is machined, the size of the formed axial positioning surface 203 will be even smaller, resulting in the inability to ensure the axial positioning between the middle housing 400 and the support frame 200.

[0037] To solve the above problems, an embodiment of the present application provides a positioning assembly for a scroll compressor and a scroll compressor having the same.

[0038] Next, in conjunction with Figures 4 to 8 , a positioning assembly for a scroll compressor and a scroll compressor having the same provided by an embodiment of the present application will be described.

[0039] It should be understood that there can be multiple implementation manners of the present application and should not be construed as being limited to the embodiments described herein. The embodiments described herein are only for a more thorough and clear understanding of the present application.

[0040] Exemplary positioning assembly

[0041] On the one hand, an embodiment of the present application provides a positioning component for a scroll compressor. Refer to Figures 4 to 7 As shown, the positioning component may include a first component 10 and a second component 20 that are cooperatively installed. A stepped portion is provided on the first component 10, and the stepped portion may include a first radial positioning surface 11 and a first axial positioning surface 12 perpendicular to the first radial positioning surface 11. A second radial positioning surface 21 and a second axial positioning surface 22 may be provided on the second component 20. The second radial positioning surface 21 cooperates with the first radial positioning surface 11 to radially position the first component 10, and the second axial positioning surface 22 cooperates with the first axial positioning surface 12 to axially position the first component 10.

[0042] A relief groove 13 is provided on the first component 10 between the first radial positioning surface 11 and the first axial positioning surface 12. The relief groove 13 may include a first side surface 131 close to the first radial positioning surface 11, a second side surface 132 close to the first axial positioning surface 12, and a bottom surface 133 between the first side surface 131 and the second side surface 132. The first side surface 131 and the second side surface 132 are parallel and inclined relative to the axial direction.

[0043] The first side surface 131 and the second side surface 132 of the relief groove 13 are parallel and inclined relative to the axial direction, which can realize the function of the relief groove 13 in a compact structural space. At the same time, it can avoid residual machining surfaces remaining on the first axial positioning surface 12 or the first radial positioning surface 11, and can ensure that the first radial positioning surface 11 and the first axial positioning surface 12 have appropriate positioning dimensions, thereby improving the radial and axial positioning accuracy.

[0044] According to the technical solution provided by the present application, the two side surfaces of the relief groove 13 extend in parallel, and the width of the relief groove 13 can be small when the depth of the relief groove 13 increases. In this way, when forming the relief groove 13, the area cut off on the first radial positioning surface 11 and the first axial positioning surface 12 can be reduced.

[0045] Compared with Figure 2 the relief groove in which the radial positioning surface 102 or Figure 3 the axial positioning surface 203 in

[0046] has a very small size, the relief groove 13 in the present application can ensure the mating dimensions of the first radial positioning surface 11 and the first axial positioning surface 12 with the second component 20, which is beneficial to improving the radial and axial positioning accuracy of the two. In addition, the design method of the relief groove 13 in the present application can also avoid residual machining surfaces remaining on the first axial positioning surface 12 or the first radial positioning surface 11, thereby ensuring the positioning accuracy of the second component 20 and the first component 10.Therefore, the technical solution provided by the embodiments of the present application can ensure the positioning accuracy of the first component 10 and the second component 20 that are assembled with each other in the radial and axial directions of the scroll compressor, which is beneficial to improving the assembly accuracy of the scroll compressor, and thus improving the compression performance of the scroll compressor.

[0047] The technical solution provided by the embodiments of the present application is particularly applicable to the case where the matching structure of the components in the scroll compressor is compact, the sizes of the radial positioning surface and / or the axial positioning surface are small, and the positioning structure fails or the positioning accuracy is poor when other types of relief grooves are used.

[0048] In some embodiments, referring to Figure 4 and Figure 6 as shown, the bottom surface 133 of the relief groove 13 is semi-circular. The semi-circular bottom surface is easy to machine and can relieve the stress concentration of the stepped portion of the first component 10.

[0049] In some alternative embodiments, referring to Figure 5 and Figure 7 as shown, the bottom surface 133 can also be a plane, and fillets or chamfers are respectively formed between the bottom surface 133 and the first side surface 131 and the second side surface 132.

[0050] In some embodiments, the included angle α between the first side surface 131 and the second side surface 132 of the relief groove 13 and the axial direction is 15° to 75°, such as 20°, 30°, 40°, 50°, 60° or 70°, etc. The included angle α between the first side surface 131 and the second side surface 132 and the axial direction can ensure the function of the relief groove and appropriately take into account the positioning dimensions of the first radial positioning surface 11 and the first axial positioning surface 12.

[0051] In some examples, the included angle α between the first side surface 131 and the second side surface 132 of the relief groove 13 and the axial direction is 35° to 55°. When the included angle α is within this range, the positioning dimensions of the first radial positioning surface 11 and the first axial positioning surface 12 can be better taken into account.

[0052] For example, the included angle α between the first side surface 131 and the second side surface 132 and the first radial positioning surface 11 is 45°. In this way, the positioning dimensions of the first radial positioning surface 11 and the first axial positioning surface 12 can be better taken into account.

[0053] The included angle α can be specifically adjusted according to the dimensions of the first radial positioning surface 11 and the first axial positioning surface 12, as well as whether the machining tool can completely cut the first axial positioning surface 12. For example, if it is necessary to set a larger positioning dimension for the first radial positioning surface 11, then, on the premise of ensuring that there is no machining residual surface on the first axial positioning surface 12, the included angle α can be set larger. If the positioning dimension of the first axial positioning surface 12 is set larger, then the included angle α of the relief groove 13 can be set smaller.

[0054] In some embodiments, the vertical distance d between the first side surface 131 and the second side surface 132 can be 0.8 mm to 5 mm, such as 1 mm, 2 mm, 3 mm or 4 mm, etc. In this way, it is convenient to machine the relief groove 13, while taking into account the positioning dimensions of the first radial positioning surface 11 and the first axial positioning surface 12, as well as the structural strength of the first component 10.

[0055] In some embodiments, the widths b of the first side surface 131 and the second side surface 132 in the depth direction of the relief groove 13 can be 0.1 mm to 10 mm respectively, such as 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm or 9 mm, etc. It is possible to avoid b being too small to facilitate the machining of the relief groove 13 and realize the function of the relief groove. At the same time, avoid d being too large to weaken the structural strength of the first component 10.

[0056] For example, the widths b of the first side surface 131 and the second side surface 132 in the depth direction of the relief groove 13 can be 0.1 mm to 4 mm respectively, such as 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm or 3.5 mm, etc. In this way, while being convenient for machining, the structural strength of the first component 10 can be better taken into account.

[0057] In some embodiments, referring to Figure 5 , the height h1 of the step portion in the axial direction can be 2 mm to 6 mm, such as 3 mm, 4 mm or 5 mm, etc. The height h2 of the first radial positioning surface in the axial direction can be 0.5 mm to 4 mm, such as 1 mm, 2 mm or 3 mm, etc. That is to say, when the height h1 of the step portion is only 2 mm to 6 mm, it is also possible to ensure that the mating height of the first radial positioning surface 11 and the second component 20 meets the positioning requirements.

[0058] Exemplarily, the height h1 of the step portion on the first component 10 in the axial direction is 3 mm to 6 mm, and the height h2 of the first radial positioning surface 11 in the axial direction is 1.5 mm to 3.5 mm.

[0059] Controlling h1 and h2 within the above ranges can ensure the radial positioning accuracy of the first radial positioning surface 11 under a compact structural design and layout.

[0060] It should be noted that the axial direction and the radial direction described in this application are relative to the compressor, and are the directions defined when the first component 10 and the second component 20 are installed on the compressor.

[0061] In the technical solution provided by this application, the first component 10 and the second component 20 can be two components in a scroll compressor that need to be positioned relative to each other axially and radially.

[0062] Exemplarily, one of the first component 10 and the second component 20 can be the stationary scroll plate of the scroll compressor, and the other can be the support frame for supporting the stationary scroll plate of the scroll compressor.

[0063] Exemplarily, one of the first component 10 and the second component 20 can be the support frame of the scroll compressor, and the other can be the middle shell of the scroll compressor.

[0064] Exemplarily, one of the first component 10 and the second component 20 can be the support frame of the scroll compressor, and the other can be the upper end of the stator housing of the motor of the scroll compressor.

[0065] Exemplarily, one of the first component 10 and the second component 20 can be the lower support base located at the lower end of the motor of the scroll compressor, and the other can be the lower end of the stator housing of the motor of the scroll compressor.

[0066] Exemplarily, one of the first component 10 and the second component 20 can be the balance weight that rotates with the crankshaft of the scroll compressor, and the other can be the crankshaft of the scroll compressor. The balance weight can be the lower balance weight located at the lower end of the crankshaft or the upper balance weight located at the upper end of the crankshaft.

[0067] Exemplary scroll compressor

[0068] On the other hand, an embodiment of this application further provides a scroll compressor, which can include a housing, a compression mechanism, a driving mechanism, and at least one positioning assembly described in any of the above embodiments. The housing is provided with a suction port and a discharge port. The compression mechanism is housed in the housing and includes a first scroll plate and a second scroll plate. The scroll teeth of the first scroll plate and the scroll teeth of the second scroll plate have a matching structure to cooperate to form a compression chamber, and at least one of the first scroll plate and the second scroll plate is a moving scroll plate. The driving mechanism is used to drive the moving scroll plate to rotate, so as to compress the fluid from the suction port and discharge the compressed fluid from the discharge port.

[0069] The scroll compressor correspondingly has the corresponding technical effects of the above positioning assembly for the scroll compressor, which will not be elaborated here.

[0070] In one embodiment, at least one of the positioning components of the scroll compressor may include at least one of a first positioning component, a second positioning component, a third positioning component, a fourth positioning component, and a fifth positioning component.

[0071] In the first positioning component, one of the first component 10 and the second component 20 is the stationary scroll of the scroll compressor, and the other is the support frame for supporting the stationary scroll.

[0072] In the second positioning component, one of the first component 10 and the second component 20 is the support frame of the scroll compressor, and the other is the middle shell of the scroll compressor.

[0073] In the third positioning component, one of the first component 10 and the second component 20 is the support frame of the scroll compressor, and the other is the upper end of the stator housing of the motor of the scroll compressor.

[0074] In the fourth positioning component, one of the first component 10 and the second component 20 is the lower support base located at the lower end of the motor of the scroll compressor, and the other is the lower end of the stator housing of the motor of the scroll compressor.

[0075] In the fifth positioning component, one of the first component 10 and the second component 20 is the balance weight that rotates with the crankshaft of the scroll compressor, and the other is the crankshaft of the scroll compressor.

[0076] Next, for the sake of easy understanding, in combination with Figures 4 to 8 , a detailed description will be given of an exemplary scroll compressor of the present application.

[0077] Referring to Figures 4 to 8 the shown scroll compressor, the scroll compressor includes a stationary scroll 1, an orbiting scroll 2, a support frame 3, a crankshaft 4, a motor 5, and a compressor housing 8 located on the outside. The compressor housing 8 includes an upper end cover 81, an end cover 83, and a middle shell 82 located between the upper end cover and the lower end cover 83. The scroll compressor further includes a lower support base 7 located at the lower end of the motor 5 and a balance weight installed on the crankshaft 4 for balancing the crankshaft. The balance weight may include an upper balance weight 61 provided at the upper end of the crankshaft 4 and a lower balance weight 62 provided at the lower end. Of course, the case of providing only one balance weight is not excluded.

[0078] The scroll compressor has a first positioning component. In this first positioning component, the first component 10 is the stationary scroll 1, and the second component 20 is the support frame 3. As shown at A in Figure 8 , the positioning structure of the cooperation between the stationary scroll 1 and the support frame 3 is shown. Referring to Figure 4 and Figure 5 , Figure 8In the structure shown at location A, the stationary scroll 1 is the first component 10 having a first radial positioning surface 11 and a first axial positioning surface 12, and the support frame 3 is the second component 20 that cooperates with and positions the stationary scroll 1. In this positioning structure, by using the relief groove provided in this application, the positioning accuracy between the support frame 3 and the stationary scroll 1 in the axial and radial directions can be improved. It can be understood that the support frame 3 can also be set as the first component 10 having a first radial positioning surface 11 and a first axial positioning surface 12, that is, the support frame 3 is provided with a stepped portion, and the stationary scroll 1 is the second component 20 that cooperates with and positions this stepped portion.

[0079] This scroll compressor also has a second positioning assembly. In the second positioning assembly, the first component 10 is the support frame 3, and the second component 20 is the middle housing 82. As Figure 8 shown at location B in, the positioning structure of the cooperation between the support frame 3 and the middle housing 82 is shown. Referring to Figure 6 and Figure 7 , the support frame 3 is the first component 10 having a first radial positioning surface 11 and a first axial positioning surface 12, and the middle housing 82 is the second component 20 that cooperates with and positions the support frame 3. In this positioning structure, by using the relief groove provided in this application, the positioning accuracy between the support frame 3 and the middle housing 82 in the axial and radial directions can be ensured. Similarly, it can be understood that the middle housing 82 can also be set as the first component 10 having a stepped portion, and the support frame 20 is the second component 20 that cooperates with and positions this stepped portion.

[0080] This scroll compressor also has a third positioning assembly. In the third positioning assembly, the first component 10 is the support frame 3, and the second positioning component 20 is the upper end of the stator housing 51 of the motor 5. As Figure 8 shown at location E in, the positioning structure of the cooperation between the support frame 3 and the upper end of the stator housing 51 is shown. This positioning structure can ensure the positioning accuracy between the stator housing 51 and the support frame 3 in the axial and radial directions. Similarly, the upper end of the stator housing 51 can also be set as the first component 10 having a stepped portion, and the support frame 3 is the second component 20 that cooperates with and positions this stepped portion.

[0081] This scroll compressor can also have a fourth positioning assembly. In the fourth positioning assembly, the first component 10 is the lower support seat 7 located at the lower end of the motor 5, and the second component 20 is the lower end of the stator housing 51 of the motor 5. As Figure 8 shown at location F in, the positioning structure of the cooperation between the support seat 7 and the lower end of the positioning housing 51 is shown. This positioning structure can ensure the positioning accuracy between the stator housing 51 and the lower support seat 7 in the axial and radial directions. Similarly, the lower end of the stator housing 51 can also be set as the first component 10 having a stepped portion, and the lower support seat 7 is the second component 20 that cooperates with and positions this stepped portion.

[0082] The scroll compressor may further include a fifth positioning assembly. The first component 10 in the fifth positioning assembly is the crankshaft 4, and the second component 20 is the balance weight. As shown at C in Figure 8 , the positioning structure of the cooperation between the crankshaft 4 and the upper balance weight 61 is shown, and this positioning structure can ensure the positioning accuracy of the upper balance weight 61 and the crankshaft 4 in the axial direction and the radial direction. As shown at D in Figure 8 , the positioning structure of the cooperation between the crankshaft 4 and the lower balance weight 62 is shown, and this positioning structure can ensure the positioning accuracy of the lower balance weight 62 and the crankshaft 4 in the axial direction and the radial direction.

[0083] For the scroll compressor provided in the above embodiment, by providing the relief groove provided in the present application in each positioning assembly, the positioning accuracy of each component in the scroll compressor in the radial direction and the axial direction can be ensured, which is beneficial to improving the assembly accuracy of the scroll compressor, thereby ensuring the compression performance of the compressor.

[0084] For any other two components that require precise cooperation in the scroll compressor, the positioning assembly in the embodiment of the present application can be considered, and they are not listed one by one here.

[0085] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A scroll compressor, characterized in that: The scroll compressor includes at least one positioning assembly, each of the positioning assemblies includes a first component and a second component that are cooperatively mounted; The first component is provided with a step portion, the step portion comprising a first radial positioning surface and a first axial positioning surface perpendicular to the first radial positioning surface; The second component is provided with a second radial positioning surface and a second axial positioning surface, the second radial positioning surface cooperates with the first radial positioning surface to radially position the first component, and the second axial positioning surface cooperates with the first axial positioning surface to axially position the first component; Among them, the first component is provided with a tool retreat groove located between the first radial positioning surface and the first axial positioning surface, and the tool retreat groove includes a first side surface close to the first radial positioning surface, a second side surface close to the first axial positioning surface, and a bottom surface between the first side surface and the second side surface; the first side surface and the second side surface are parallel and inclined relative to the axial direction.

2. The scroll compressor according to claim 1, characterized in that: The bottom surface of the backing groove is semicircular.

3. The scroll compressor according to claim 1, characterized in that: The bottom surface of the tool retreat groove is a plane, and fillets or chamfers are formed between the bottom surface and the first side surface and the second side surface.

4. The scroll compressor according to any one of claims 1 to 3, characterized in that: An included angle α between the first side surface and the second side surface and the axial direction is 15° to 75° or 35° to 55°.

5. The scroll compressor according to claim 4, characterized in that: An included angle α between the first side surface and the second side surface and the axial direction is 45°.

6. The scroll compressor according to any one of claims 1 to 3, characterized in that: A vertical distance d between the first side surface and the second side surface is 0.8 mm to 5 mm.

7. The scroll compressor according to any one of claims 1 to 3, characterized in that: The width b of the first side surface and the second side surface in the depth direction of the undercut groove is 0.1 mm to 10 mm or 0.1 mm to 4 mm respectively.

8. The scroll compressor according to any one of claims 1 to 3, characterized in that: The height h1 of the step portion in the axial direction is 2 mm to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 0.5 mm to 4 mm.

9. The scroll compressor according to claim 8, characterized in that: The height h1 of the step portion in the axial direction is 3 to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 1.5 to 3.5 mm.

10. The scroll compressor according to any one of claims 1 to 3, characterized in that: The at least one positioning assembly includes at least one of a first positioning assembly, a second positioning assembly, a third positioning assembly, a fourth positioning assembly, and a fifth positioning assembly, wherein: In the first positioning assembly, one of the first component and the second component is a fixed scroll of the scroll compressor, and the other is a support frame supporting the fixed scroll; In the second positioning assembly, one of the first component and the second component is a support frame of the scroll compressor, and the other is a middle shell of the scroll compressor; In the third positioning assembly, one of the first component and the second component is a support frame of the scroll compressor, and the other is an upper end of a stator housing of a motor of the scroll compressor; In the fourth positioning assembly, one of the first component and the second component is a lower support seat located at the lower end of the motor of the scroll compressor, and the other is a lower end of a stator housing of the motor of the scroll compressor; In the fifth positioning assembly, one of the first component and the second component is a balancing block of the scroll compressor that rotates with the crankshaft, and the other is the crankshaft of the scroll compressor.

11. A positioning assembly for a scroll compressor, characterized in that: The positioning assembly includes a first component and a second component that are cooperatively installed; The first component is provided with a step portion, the step portion comprising a first radial positioning surface and a first axial positioning surface perpendicular to the first radial positioning surface; The second component is provided with a second radial positioning surface and a second axial positioning surface, the second radial positioning surface cooperates with the first radial positioning surface to radially position the first component, and the second axial positioning surface cooperates with the first axial positioning surface to axially position the first component; and The first component is provided with a tool retreat groove located between the first radial positioning surface and the first axial positioning surface, and the tool retreat groove includes a first side surface close to the first radial positioning surface, a second side surface close to the first axial positioning surface, and a bottom surface between the first side surface and the second side surface; the first side surface and the second side surface are parallel and inclined relative to the axial direction.

12. The positioning assembly according to claim 11, characterized in that The bottom surface is semicircular.

13. The positioning assembly according to claim 11, characterized in that The bottom surface is a plane, and rounded corners or chamfers are formed between the bottom surface and the first side surface and the second side surface.

14. The positioning assembly according to any one of claims 11 to 13, characterized in that: An included angle α between the first side surface and the second side surface and the axial direction is 15° to 75° or 35° to 55°.

15. The positioning assembly according to claim 14, characterized in that An included angle α between the first side surface and the second side surface and the axial direction is 45°.

16. The positioning assembly according to any one of claims 11 to 13, characterized in that: A vertical distance d between the first side surface and the second side surface is 0.8 mm to 5 mm.

17. The positioning assembly according to any one of claims 11 to 13, characterized in that: The width b of the first side surface and the second side surface in the depth direction of the undercut groove is 0.1 mm to 10 mm or 0.1 mm to 4 mm respectively.

18. The positioning assembly according to any one of claims 11 to 13, characterized in that: The height h1 of the step portion in the axial direction is 2 mm to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 0.5 mm to 4 mm.

19. The positioning assembly according to claim 18, characterized in that The height h1 of the step portion in the axial direction is 3 mm to 6 mm, and the height h2 of the first radial positioning surface in the axial direction is 1.5 mm to 3.5 mm.

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