Scroll compressor

Abstract

The utility model belongs to compressor technical field discloses scroll compressor, this scroll compressor includes static vortex disc and bearing seat, static vortex disc includes static disc body and the outer peripheral part of being connected in the outer periphery of static disc body, bearing seat is equipped with the support surface along the own axial direction static disc body, the support surface is concave and is equipped with the accommodation groove, the outer peripheral part is along the own axial direction partial and is inserted in the accommodation groove to along the radial direction of outer peripheral part position of static vortex disc relative bearing seat, and the outer peripheral part can be supported in the support surface, one of outer peripheral part and bearing seat is equipped with the slot, the other is equipped with the insertion piece, when the outer peripheral part is along the own axial direction and is inserted in the accommodation groove, the slot is inserted and is connected with the insertion piece, and the insertion piece can be along the circumferential direction of outer peripheral part and is abutted in the inner peripheral wall of slot and restricts static vortex disc relative bearing seat rotation. The structure of this scroll compressor is simple, and the number of parts is few, can effectively reduce the production cost, promotes the dismounting efficiency, secondly, the versatility of static vortex disc and bearing seat of this scroll compressor is good.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to scroll compressors. Background Technology

[0002] The scroll compressor consists of a housing, a muffler cover, a scroll compression assembly, a sealing structure, a bearing housing, and a crankshaft. A high-pressure chamber is formed between the side of the muffler cover away from the scroll compression assembly and the housing, while a low-pressure chamber is formed between the side of the muffler cover closer to the scroll compression assembly and the housing. The crankshaft is driven by the moving scroll of the scroll compression assembly, which drives the moving scroll to move relative to the stationary scroll of the scroll compression assembly, thereby compressing the fluid in the compression chamber to form a high-pressure fluid. The sealing structure is used to seal the gap between the stationary scroll and the muffler cover, so that the high-pressure fluid formed by compression can flow well to the high-pressure chamber.

[0003] Currently, to ensure the stationary scroll plate does not shift position, related technologies typically use locating pins or connecting screws to define the relative positions of the stationary scroll plate and the bearing housing. Taking locating pins as an example, the locating pin usually passes through the stationary scroll plate and connects to the bearing housing. The connection method is either: the locating pin passes through the stationary scroll plate and is interference-fitted into the bearing housing, and a limiting part is provided on the stationary scroll plate to limit the position of the locating pin, preventing it from gradually detaching from the bearing housing under vibration or other conditions, and preventing noise caused by loosening; or, the locating pin is threaded to the bearing housing, and a limiting part is provided on the stationary scroll plate to limit the position of the locating pin. While these methods can ensure the stationary scroll plate does not shift position, they result in a large number of parts in the scroll compressor, low assembly and disassembly efficiency, and poor versatility between the stationary scroll plate and the bearing housing. Utility Model Content

[0004] The purpose of this invention is to provide a scroll compressor to solve the aforementioned problems existing in the scroll compressors of the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A scroll compressor includes a stationary scroll and a bearing housing, wherein the stationary scroll includes a stationary scroll body and an outer periphery connected to the stationary scroll body;

[0007] The bearing housing has a support surface facing the stationary disc body along its own axial direction. The support surface is recessed with a receiving groove. The outer peripheral portion is inserted into the receiving groove along its own axial direction to position the stationary volute relative to the bearing housing in the radial direction of the outer peripheral portion. The outer peripheral portion can be supported on the support surface.

[0008] One of the outer peripheral portion and the bearing housing is provided with a slot, and the other is provided with a plug. When the outer peripheral portion is inserted into the receiving groove along its own axial direction, the slot and the plug are engaged, and the plug can abut against the inner peripheral wall of the slot along the circumferential direction of the outer peripheral portion to restrict the rotation of the stationary volute relative to the bearing housing.

[0009] As an alternative to the aforementioned scroll compressor, the outer peripheral portion includes an annular outer peripheral body and a support portion connected to the outer periphery of the outer peripheral body; the outer peripheral body is partially inserted into the receiving groove along its own axial direction, and the support portion can support the support surface.

[0010] As an alternative to the aforementioned scroll compressor, one end face of the support surface and the support portion near the support surface is provided with the insertion block protruding from one side and the slot recessed from the other side.

[0011] And / or, the outer periphery of the outer peripheral body is provided with the insert block protruding outwards, the inner peripheral wall of the receiving groove is provided with the slot, and the slot passes through the upper end face of the bearing seat along the axial direction of the bearing seat;

[0012] And / or, the slot is recessed on the outer periphery of the outer peripheral body, and the slot extends through the lower end face of the outer peripheral body along the axial direction of the outer peripheral body, and the insert is protruding from the inner peripheral wall of the receiving groove;

[0013] And / or, on the lower end face of the outer peripheral body and the inner wall of the receiving groove, one is provided with the insert protruding along the axial direction of the bearing seat, and the other is provided with the slot recessed along the axial direction of the bearing seat.

[0014] As an alternative to the aforementioned scroll compressor, the outer peripheral body and the receiving groove are fitted with a clearance.

[0015] As an optional solution for the aforementioned scroll compressor, the fitting clearance between the outer peripheral body and the accommodating groove ranges from 5μm to 50μm.

[0016] As an alternative to the aforementioned scroll compressor, the scroll compressor further includes a connecting assembly, which comprises:

[0017] The guide sleeve includes a guide portion and a limiting portion connected to the outer periphery of the guide portion; the guide portion is slidably inserted through the support portion along the axial direction of the static vortex and supported on the support surface; the limiting portion is located above the upper end surface of the support portion and can abut against the upper end surface of the support portion.

[0018] A connector includes a head and a threaded connection portion connected together; the threaded connection portion passes through the guide portion and is threadedly connected to the bearing seat, and the head is supported on the top of the limiting portion.

[0019] As an alternative to the aforementioned scroll compressor, the gap between the lower end face of the limiting part and the upper end face of the supporting part ranges from 0.1mm to 1mm.

[0020] As an alternative to the aforementioned scroll compressor, the number of connecting components is at least two, and the at least two connecting components are distributed circumferentially at intervals along the bearing housing.

[0021] As an optional embodiment of the above-mentioned scroll compressor, the stationary scroll further includes stationary rotary teeth connected to the lower end face of the stationary scroll body, and the outer peripheral portion is located on the outer periphery of the stationary rotary teeth; the scroll compressor further includes a moving scroll, the moving scroll including a moving scroll body and moving rotary teeth connected to the upper end face of the moving scroll body; a compression cavity is formed between the stationary scroll body, the stationary rotary teeth, the outer peripheral portion, the moving scroll body, and the moving rotary teeth;

[0022] The scroll compressor further includes a cross-shaped slip ring. The lower end face of the moving disc body is recessed with a first sliding groove, and the inner bottom wall of the receiving groove is recessed with a second sliding groove. The upper key of the cross-shaped slip ring is slidably located in the first sliding groove, and the lower key of the cross-shaped slip ring is slidably located in the second sliding groove, so as to limit the translational motion of the moving scroll relative to the stationary scroll. Alternatively, the lower end face of the moving disc body and the inner bottom wall of the receiving groove are provided with at least two limiting posts on one side and at least two limiting grooves on the other side. The at least two limiting posts are arranged in a one-to-one correspondence with the at least two limiting grooves. The limiting posts are movably inserted into the limiting grooves to limit the translational motion of the moving scroll relative to the stationary scroll.

[0023] As an alternative to the aforementioned scroll compressor, the stationary scroll is fixed relative to the bearing housing along its own axial direction; or...

[0024] The stationary vortex disk is floating relative to the bearing housing along its own axial direction.

[0025] The beneficial effects of this utility model are:

[0026] This utility model provides a scroll compressor, which includes a stationary scroll and a bearing housing. The stationary scroll includes a stationary disk body and an outer peripheral portion connected to the outer periphery of the stationary disk body. The bearing housing has a support surface facing the stationary disk body along its own axial direction. The support surface has a recessed receiving groove. The outer peripheral portion is inserted into the receiving groove along its own axial direction to position the stationary scroll relative to the bearing housing radially along the outer peripheral portion, and the outer peripheral portion can be supported on the support surface. One of the outer peripheral portion and the bearing housing has a slot, and the other has a plug. When the outer peripheral portion is inserted into the receiving groove along its own axial direction, the slot and the plug are engaged, and the plug can abut against the inner peripheral wall of the slot along the circumferential direction of the outer peripheral portion to restrict the rotation of the stationary scroll relative to the bearing housing.

[0027] When assembling the stationary scroll into the bearing housing, the outer periphery is inserted into the receiving groove of the bearing housing. When the outer periphery is inserted into place along its own axial direction, the support part is supported on the support surface. The insert and slot are engaged to enable the stationary scroll to be installed and removed from the bearing housing quickly and efficiently compared to existing technologies.

[0028] Specifically, by setting the outer periphery to fit into the receiving groove of the bearing housing, the radial position of the stationary scroll is defined along the outer periphery. By setting the support part to support the support surface, the axial position of the stationary scroll is defined along the axis of the stationary scroll. By setting the plug and slot to fit into each other, and the plug abutting against the inner circumferential wall of the slot along the outer periphery, the rotation of the stationary scroll relative to the bearing housing can be effectively prevented, thus completely defining the position of the stationary scroll. Moreover, the number of parts is less than that of the prior art. Secondly, by adopting the above structure, the stationary scroll can be set to be fixed relative to the bearing housing along its own axis, or it can be set to float relative to the bearing housing along its own axis, thereby effectively improving the versatility of the stationary scroll and the bearing housing.

[0029] Therefore, the scroll compressor has a simple structure and few parts, which can effectively reduce production costs and improve assembly and disassembly efficiency; secondly, the scroll compressor has good versatility in terms of stationary scroll and bearing housing. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of a scroll compressor provided in a specific embodiment of this utility model;

[0031] Figure 2 This is a breakdown of the scroll compressor provided in a specific embodiment of the present invention. Figure 1 ;

[0032] Figure 3 This is a breakdown of the scroll compressor provided in a specific embodiment of the present invention. Figure 2 ;

[0033] Figure 4 This is a schematic diagram of the bearing housing provided in a specific embodiment of this utility model;

[0034] Figure 5 This is a partial cross-sectional view of a scroll compressor provided in a specific embodiment of this utility model;

[0035] Figure 6 This is a breakdown of the scroll compressor provided in a specific embodiment of the present invention. Figure 3 ;

[0036] Figure 7 This is a breakdown of the scroll compressor provided in a specific embodiment of the present invention. Figure 4 .

[0037] In the picture:

[0038] 1. Static scroll plate; 11. Static scroll plate body; 12. Outer periphery; 121. Outer periphery body; 122. Support part; 13. Static spiral tooth;

[0039] 2. Bearing housing; 21. Support surface; 211. Receiving groove; 22. Second sliding groove; 23. Limiting groove; 24. Threaded hole; 25. Second through hole;

[0040] 31. Slot; 32. Insert block;

[0041] 41. Guide sleeve; 411. Guide part; 412. Limiting part;

[0042] 42. Connector; 421. Head; 422. Threaded connection;

[0043] 5. Moving scroll plate; 51. Moving plate body; 511. First slide groove; 512. Limiting post; 513. Crankshaft connection part; 52. Moving helical gear;

[0044] 6. Cross-shaped slide ring; 61. Up arrow key; 62. Down arrow key;

[0045] 7. Crankshaft;

[0046] 8. Sealed structure. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] Currently, to ensure the stationary scroll plate does not shift position, related technologies typically use locating pins or connecting screws to define the relative positions of the stationary scroll plate and the bearing housing. Taking locating pins as an example, the locating pin usually passes through the stationary scroll plate and connects to the bearing housing. The connection method is either: the locating pin passes through the stationary scroll plate and is interference-fitted into the bearing housing, and a limiting part is provided on the stationary scroll plate to limit the position of the locating pin, preventing it from gradually detaching from the bearing housing under vibration or other conditions, and preventing noise caused by loosening; or, the locating pin is threaded to the bearing housing, and a limiting part is provided on the stationary scroll plate to limit the position of the locating pin. While these methods can ensure the stationary scroll plate does not shift position, they result in a large number of parts in the scroll compressor, low assembly and disassembly efficiency, and poor versatility between the stationary scroll plate and the bearing housing.

[0052] This utility model provides a scroll compressor, such as Figure 1-7 As shown, the scroll compressor includes a stationary scroll 1 and a bearing housing 2. The stationary scroll 1 includes a stationary disk body 11 and an outer peripheral portion 12 connected to the outer periphery of the stationary disk body 11. The bearing housing 2 is provided with a support surface 21 facing the stationary disk body 11 along its own axial direction. The support surface 21 is recessed with a receiving groove 211. The outer peripheral portion 12 is partially inserted into the receiving groove 211 along its own axial direction to position the stationary scroll 1 relative to the bearing housing 2 in the radial direction of the outer peripheral portion 12, and the outer peripheral portion 12 can be supported on the support surface 21. One of the outer peripheral portion 12 and the bearing housing 2 is provided with a slot 31, and the other is provided with a plug 32. When the outer peripheral portion 12 is inserted into the receiving groove 211 along its own axial direction, the slot 31 and the plug 32 are engaged, and the plug 32 can abut against the inner peripheral wall of the slot 31 along the circumferential direction of the outer peripheral portion 12 to restrict the rotation of the stationary scroll 1 relative to the bearing housing 2.

[0053] When the stationary scroll 1 is assembled onto the bearing housing 2, the outer peripheral part 12 is inserted into the receiving groove 211 of the bearing housing 2. When the outer peripheral part 12 is inserted into place along its own axial direction, the support part 122 is supported on the support surface 21, and the insert block 32 and the slot 31 are inserted and engaged, so that the stationary scroll 1 can be quickly and efficiently installed and removed from the bearing housing 2 compared with the prior art.

[0054] In this design, the outer peripheral portion 12 is inserted into the receiving groove 211 of the bearing housing 2, thus defining the position of the stationary scroll 1 radially along the outer peripheral portion 12. The support portion 122 is supported on the support surface 21, thus defining the position of the stationary scroll 1 axially. The insertion block 32 is inserted into the slot 31, and the insertion block 32 abuts against the inner peripheral wall of the slot 31 circumferentially along the outer peripheral portion 12, effectively preventing the stationary scroll 1 from rotating relative to the bearing housing 2. This completely defines the position of the stationary scroll 1, and the number of parts is less compared to the prior art. Furthermore, the above structure allows the stationary scroll 1 to be fixed relative to the bearing housing 2 along its own axial direction, or it can be set to float relative to the bearing housing 2 along its own axial direction, thereby effectively improving the versatility of the stationary scroll 1 and the bearing housing 2.

[0055] Therefore, the scroll compressor has a simple structure and few parts, which can effectively reduce production costs and improve assembly and disassembly efficiency; secondly, the scroll compressor has good versatility in terms of stationary scroll 1 and bearing housing 2.

[0056] Specifically, the insert 32 does not always abut against the inner circumferential wall of the slot 31 along the circumferential direction of the outer periphery 12. Instead, it only abuts against the inner circumferential wall of the slot 31 when the circumferential driving force on the stationary scroll 1 is greater than a set value, thereby limiting the continued rotation of the stationary scroll 1 relative to the bearing seat 2. The set value is an empirical value obtained from a large number of previous tests.

[0057] Among them, such as Figure 1-3 and Figure 5 As shown, the outer peripheral portion 12 includes an annular outer peripheral body 121 and a support portion 122 connected to the periphery of the outer peripheral body 121; the outer peripheral body 121 is partially inserted into the receiving groove 211 along its own axial direction, and the support portion 122 can be supported on the support surface 21. This ensures that the outer peripheral portion 12 can be supported on the support surface 21 when inserted into the receiving groove 211 along its own axial direction.

[0058] Specifically, such as Figure 1-3 and Figure 5As shown, the outer peripheral body 121 is annular, and the portion of the receiving groove 211 that is inserted into the outer peripheral body 121 is cylindrical. It can be understood that the stationary volute 1 is fixed relative to the bearing housing 2 along its own axial direction; or, the stationary volute 1 is floating relative to the bearing housing 2 along its own axial direction.

[0059] In this embodiment, as Figure 1-4 , Figure 6 and Figure 7 As shown, the exemplary setting of the support surface 21 is the upper end surface of the bearing housing 2. In other embodiments, the support surface 21 may also be one end surface below the upper end surface of the bearing housing 2, etc.

[0060] Optionally, such as Figure 2 As shown, on the support surface 21 and the support portion 122, one end face near the support surface 21 has a protruding insert 32, and the other has a recessed slot 31. This effectively prevents the stationary scroll 1 from rotating relative to the bearing housing 2. Specifically, when the lower end face of the support portion 122 has a protruding insert 32, the support surface 21 has a recessed slot 31.

[0061] Optionally, such as Figure 3 As shown, the outer periphery of the outer peripheral body 121 is provided with a protruding insert 32, and the inner peripheral wall of the receiving groove 211 is provided with a recessed slot 31, which extends through the upper end face of the bearing seat 2 along the axial direction of the bearing seat 2. This can also effectively prevent the stationary volute 1 from rotating relative to the bearing seat 2.

[0062] Optionally, the outer periphery of the outer peripheral body 121 is recessed with a slot 31, and the slot 31 extends through the lower end face of the outer peripheral body 121 along the axial direction of the outer peripheral body 121. The inner peripheral wall of the receiving groove 211 is provided with a protruding insert 32. This can also effectively prevent the stationary volute 1 from rotating relative to the bearing seat 2.

[0063] Optionally, on the lower end face of the outer peripheral body 121 and the inner wall of the receiving groove 211, one is provided with a protruding insert 32 along the axial direction of the bearing seat 2, and the other is provided with a recessed slot 31 along the axial direction of the bearing seat 2. This can also effectively prevent the stationary volute 1 from rotating relative to the bearing seat 2. Specifically, the lower end face of the outer peripheral body 121 is provided with a protruding insert 32, and the inner wall of the receiving groove 211 is provided with a recessed slot 31 along the axial direction of the bearing seat 2. The inner wall of the receiving groove 211 is provided with a protruding insert 32 along the axial direction of the bearing seat 2, and the lower end face of the outer peripheral body 121 is provided with a recessed slot 31.

[0064] like Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, an insert 32 protrudes from the support surface 21, and a slot 31 is recessed on the lower end face of the support portion 122. The slot 31 and the insert 32 are inserted into each other. The support surface 21 is the upper end face of the bearing seat 2. Further, as... Figure 2 As shown, the slot 31 is provided to extend through the support portion 122 along the axial direction of the stationary scroll 1. In other embodiments, the slot 31 may also be provided to not extend through the support portion 122 along the axial direction of the stationary scroll 1.

[0065] like Figure 3 As shown, a protruding insert 32 is provided on the outer periphery of the outer peripheral body 121, and a slot 31 is recessed on the inner peripheral wall of the receiving groove 211. The slot 31 passes through the upper end face of the bearing seat 2 along the axial direction of the axial seat 2. The support surface 21 is the upper end face of the bearing seat 2.

[0066] The outer peripheral body 121 is clearance-fitted with the receiving groove 211. For the stationary scroll 1 to be fixed relative to the bearing housing 2 along its own axial direction, it is convenient to assemble the stationary scroll 1 to the bearing housing 2; for the stationary scroll 1 to float relative to the bearing housing 2 along its own axial direction, it is convenient to assemble the stationary scroll 1 to the bearing housing 2, and ensures that the stationary scroll 1 can float stably and well relative to the bearing housing 2 along its own axial direction.

[0067] Optionally, the fitting clearance between the outer peripheral body 121 and the receiving groove 211 can range from 5 μm to 50 μm. This range is based on empirical data obtained from extensive prior testing. It is understood that the fitting clearance between the outer peripheral body 121 and the receiving groove 211 can be 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, 45 μm, or 50 μm, etc.

[0068] The slot 31 and the insert block 32 are fitted with a clearance. For the stationary scroll 1 to be fixed relative to the bearing housing 2 along its own axis, it can further facilitate the assembly of the stationary scroll 1 to the bearing housing 2; for the stationary scroll 1 to float relative to the bearing housing 2 along its own axis, it can further facilitate the assembly of the stationary scroll 1 to the bearing housing 2, and can further ensure that the stationary scroll 1 floats stably and well relative to the bearing housing 2 along its own axis.

[0069] Optionally, the number of slots 31 and inserts 32 is at least two, with at least two slots 31 and at least two inserts 32 arranged in a one-to-one correspondence, and at least two slots 31 are distributed at intervals along the circumference of the bearing housing 2. This can further improve the effect of preventing the stationary scroll 1 from rotating relative to the bearing housing 2.

[0070] like Figure 2-4 , Figure 6 and Figure 7 In both cases, slot 31 and plug 32 are configured to be one.

[0071] Optionally, such as Figure 2 As shown, the support portion 122 is annular. This ensures good stability and uniform force distribution of the stationary vortex disk 1 supported on the support surface 21. In other embodiments, the support portion 122 may also include at least two sub-support portions, which are distributed circumferentially around the outer periphery of the outer peripheral body 121.

[0072] Optionally, such as Figure 5 As shown, the scroll compressor also includes a connecting assembly, which includes a guide sleeve 41 and a connector 42. The guide sleeve 41 includes a guide portion 411 and a limiting portion 412 connected to the outer periphery of the guide portion 411; the guide portion 411 is slidably inserted through the support portion 122 along the axial direction of the stationary scroll 1 and supported on the support surface 21, and the limiting portion 412 is located above the upper end surface of the support portion 122 and can abut against the upper end surface of the support portion 122. The connector 42 includes a connected head 421 and a threaded connection portion 422; the threaded connection portion 422 passes through the guide portion 411 and is threadedly connected to the bearing housing 2, and the head 421 is supported on the top of the limiting portion 412.

[0073] By providing a guide portion 411 that slidably passes through the support portion 122 along the axial direction of the stationary scroll 1 and is supported on the support surface 21, and a limiting portion 412 located above the upper end surface of the support portion 122 and abutting against the upper end surface of the support portion 122, especially when the stationary scroll 1 floats relative to the bearing housing 2 along its own axial direction, this configuration can guide the stationary scroll 1 to move only along its own axial direction and limit the maximum amount of movement of the stationary scroll 1 along its own axial direction, thereby effectively improving the working performance of the resulting scroll compressor. When the stationary scroll 1 is fixed relative to the bearing housing 2 along its own axial direction, this configuration will not affect the working performance of the resulting scroll compressor, thereby further improving the versatility of the stationary scroll 1 and the bearing housing 2. Secondly, this configuration can also further prevent the stationary scroll 1 from rotating relative to the bearing housing 2.

[0074] Specifically, such as Figure 4 and Figure 5 As shown, the support surface 21 is recessed with a threaded hole 24. The threaded connection part 422 passes through the guide part 411 and is threadedly connected to the threaded hole 24. The support part 122 is provided with a first through hole that extends along its own axial direction, and the guide part 411 slides through the first through hole along the axial direction of the stationary volute 1 and is supported on the support surface 21.

[0075] Optionally, the gap between the lower end face of the limiting part 412 and the upper end face of the supporting part 122 can range from 0.1 mm to 1 mm. This range is based on empirical data obtained from numerous prior experiments. It is understood that the gap between the lower end face of the limiting part 412 and the upper end face of the supporting part 122 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm, etc.

[0076] Alternatively, the number of connecting components is at least two, and the at least two connecting components are distributed circumferentially at intervals along the bearing housing 2. This can further improve the stability of guiding the stationary scroll 1 to move only along its own axis, given that the scroll 1 floats relative to the bearing housing 2 along its own axis.

[0077] like Figure 4 and Figure 5 As shown, the exemplary configuration includes four connecting components, four threaded holes 24, and four first through holes. The four connecting components, four threaded holes 24, and four first through holes are all configured in a one-to-one correspondence, and the four connecting components are evenly spaced along the circumference of the bearing housing 2.

[0078] Among them, such as Figure 1 and Figure 5 As shown, the stationary volute 1 also includes stationary spiral teeth 13 connected to the lower end face of the stationary volute body 11, with the outer peripheral portion 12 located on the outer periphery of the stationary spiral teeth 13. Figure 1 , Figure 2 and Figure 5-7 As shown, the scroll compressor also includes a moving scroll 5, which includes a moving scroll body 51 and moving spiral teeth 52 connected to the upper end face of the moving scroll body 51. A compression chamber is formed between the stationary scroll body 11, the stationary spiral teeth 13, the outer peripheral portion 12, the moving scroll body 51, and the moving spiral teeth 52. It can be understood that, as Figure 1 As shown, the moving scroll 5 is located in the space formed by the stationary scroll 1 and the bearing housing 2.

[0079] In this embodiment, the stationary disk body 11, outer peripheral portion 12, and stationary spiral teeth 13 of the stationary volute 1 are integrally formed. In this embodiment, the moving disk body 51 and moving spiral teeth 52 of the moving volute 5 are integrally formed.

[0080] Specifically, such as Figure 1 and Figure 2As shown, the scroll compressor also includes a drive motor and a crankshaft 7 connected to the output shaft of the drive motor. The lower end face of the moving scroll 51 is provided with a crankshaft connecting part 513. The crankshaft 7 passes through the bearing seat 2 along its own axial direction and is connected to the crankshaft connecting part 513 in the receiving groove 211. The drive motor drives the crankshaft 7 to drive the moving scroll 5 to translate relative to the stationary scroll 1, so that high-pressure fluid can be formed in the compression chamber.

[0081] Specifically, such as Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the inner bottom wall of the receiving groove 211 is provided with a second through hole 25 that extends along the axial direction of the bearing seat 2, and the second through hole 25 communicates with the receiving groove 211. The crankshaft 7 passes through the second through hole 25 along its own axial direction and is connected to the crankshaft connecting part 513 in the receiving groove 211.

[0082] Specifically, such as Figure 1 As shown, the axial directions of the stationary scroll 1, the moving scroll 5, the bearing housing 2, and the crankshaft 7 are all parallel.

[0083] Furthermore, the scroll compressor also includes a bearing located in the receiving groove 211. The outer ring of the bearing is fixedly connected to the inner peripheral wall of the receiving groove 211, and the inner ring of the bearing is fixedly connected to the crankshaft 7.

[0084] Furthermore, such as Figure 1 and Figure 2 As shown, the scroll compressor also includes a housing, a muffler cover, and a sealing structure 8. The outer edge of the muffler cover is sealed to the inner peripheral wall of the housing, thus dividing the interior of the housing into a high-pressure chamber and a low-pressure chamber. The stationary scroll 1, the moving scroll 5, the bearing housing 2, the crankshaft 7, and the drive motor are all located in the low-pressure chamber. The sealing structure 8 is used to seal and connect the exhaust end of the stationary scroll 1 with the third through hole of the muffler cover.

[0085] Furthermore, the shell is also provided with an inlet communicating with the low-pressure chamber and an outlet communicating with the high-pressure chamber. Gas flows into the low-pressure chamber through the inlet. Under the action of pressure difference, the gas in the low-pressure chamber automatically flows into the compression chamber formed by the moving volute 5 and the stationary volute 1. After being compressed into high-pressure gas, it flows from the exhaust end of the stationary volute 1 through the third through hole of the muffler cover into the high-pressure chamber, and finally flows out through the outlet.

[0086] Furthermore, the specific structures of the sealing structure 8 differ depending on whether the stationary volute 1 is fixed relative to the bearing housing 2 along its own axial direction or floats relative to the bearing housing 2 along its own axial direction, but both are existing technologies and will not be described in detail here.

[0087] Optionally, such as Figure 1 , Figure 2 and Figure 4-6As shown, the scroll compressor also includes a cross-shaped slip ring 6. A first groove 511 is recessed on the lower end face of the moving scroll 51, and a second groove 22 is recessed on the inner bottom wall of the receiving groove 211. The upper key 61 of the cross-shaped slip ring 6 is slidably located within the first groove 511, and the lower key 62 of the cross-shaped slip ring 6 is slidably located within the second groove 22, thereby limiting the translational motion of the moving scroll 5 relative to the stationary scroll 1. This effectively ensures the motion characteristics of the moving scroll 5 and extends its service life. The working principle of limiting the translational motion of the moving scroll 5 relative to the stationary scroll 1 through the cooperation of the cross-shaped slip ring 6, the first groove 511, and the second groove 22 is existing technology and will not be elaborated here.

[0088] As an alternative, such as Figure 7 As shown, on the lower end face of the moving disc body 51 and the inner bottom wall of the receiving groove 211, one side has at least two protruding limiting posts 512, and the other side has at least two recessed limiting grooves 23. The at least two limiting posts 512 and the at least two limiting grooves 23 are arranged in a one-to-one correspondence. The limiting posts 512 are movably inserted into the limiting grooves 23 to limit the translational movement of the moving scroll 5 relative to the stationary scroll 1. It is understood that the limiting grooves 23 and the limiting posts 512 are in clearance fit. This effectively ensures the motion characteristics of the moving scroll 5 and improves its service life. The working principle of limiting the translational movement of the moving scroll 5 relative to the stationary scroll 1 through at least two limiting posts 512 and at least two limiting grooves 23 is existing technology and will not be elaborated here.

[0089] Figure 7 In the exemplary configuration, the lower end face of the moving disc body 51 is provided with six limiting posts 512, and the inner bottom wall of the receiving groove 211 is recessed with six limiting grooves 23, with each of the six limiting posts 512 corresponding to one of the six limiting grooves 23. It can be understood that the number of limiting posts 512 and limiting grooves 23 can be adaptively adjusted according to actual working conditions.

[0090] In other embodiments, the lower end face of the moving disk 51 may be recessed with at least two limiting grooves 23, and the inner bottom wall of the receiving groove 211 may be protruded with at least two limiting posts 512, with at least two limiting posts 512 corresponding to at least two limiting grooves 23 one by one; the limiting posts 512 are movably inserted into the limiting grooves 23 to limit the translation of the moving volute 5 relative to the stationary volute 1.

[0091] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A scroll compressor, comprising a stationary scroll (1) and a bearing housing (2), wherein the stationary scroll (1) comprises a stationary scroll body (11) and an outer peripheral portion (12) connected to the stationary scroll body (11); characterized in that: The bearing housing (2) is provided with a support surface (21) facing the stationary disc body (11) along its own axial direction. The support surface (21) is recessed with a receiving groove (211). The outer peripheral portion (12) is partially inserted into the receiving groove (211) along its own axial direction to position the stationary volute (1) relative to the bearing housing (2) in the radial direction of the outer peripheral portion (12). The outer peripheral portion (12) can be supported on the support surface (21). One of the outer peripheral portion (12) and the bearing seat (2) is provided with a slot (31), and the other is provided with a plug (32). When the outer peripheral portion (12) is inserted into the receiving groove (211) along its own axial direction, the slot (31) and the plug (32) are engaged and fitted together, and the plug (32) can abut against the inner peripheral wall of the slot (31) along the circumferential direction of the outer peripheral portion (12) to restrict the rotation of the stationary volute (1) relative to the bearing seat (2).

2. The scroll compressor according to claim 1, characterized in that, The outer peripheral portion (12) includes an annular outer peripheral body (121) and a support portion (122) connected to the outer periphery of the outer peripheral body (121); the outer peripheral body (121) is partially inserted into the receiving groove (211) along its own axial direction, and the support portion (122) can be supported on the support surface (21).

3. The scroll compressor according to claim 2, characterized in that: On the end faces of the support surface (21) and the support portion (122) near the support surface (21), one is provided with the insert (32) protruding and the other is provided with the slot (31) recessed; And / or, the outer periphery of the outer peripheral body (121) is provided with the insert (32), the inner peripheral wall of the receiving groove (211) is provided with the slot (31), and the slot (31) passes through the upper end face of the bearing seat (2) along the axial direction of the bearing seat (2); And / or, the outer periphery of the outer peripheral body (121) is recessed with the slot (31), and the slot (31) passes through the lower end face of the outer peripheral body (121) along the axial direction of the outer peripheral body (121), and the inner peripheral wall of the receiving groove (211) is protruded with the insert (32). And / or, on the lower end face of the outer peripheral body (121) and the inner wall of the receiving groove (211), one is provided with the insert (32) protruding along the axial direction of the bearing seat (2), and the other is provided with the slot (31) recessed along the axial direction of the bearing seat (2).

4. The scroll compressor according to claim 2, characterized in that, The outer peripheral body (121) is fitted with the receiving groove (211) with a clearance.

5. The scroll compressor according to claim 2, characterized in that, The range of the fitting clearance between the outer peripheral body (121) and the receiving groove (211) is 5μm to 50μm.

6. The scroll compressor according to any one of claims 2-5, characterized in that, The scroll compressor further includes a connecting assembly, which comprises: The guide sleeve (41) includes a guide portion (411) and a limiting portion (412) connected to the outer periphery of the guide portion (411); the guide portion (411) is slidably inserted through the support portion (122) along the axial direction of the stationary volute (1) and supported on the support surface (21); the limiting portion (412) is located above the upper end surface of the support portion (122) and can abut against the upper end surface of the support portion (122); The connector (42) includes a head (421) and a threaded connection (422) connected to each other; the threaded connection (422) passes through the guide (411) and is threadedly connected to the bearing seat (2), and the head (421) is supported on the top of the limiting part (412).

7. The scroll compressor according to claim 6, characterized in that, The gap between the lower end face of the limiting part (412) and the upper end face of the supporting part (122) is in the range of 0.1mm to 1mm.

8. The scroll compressor according to claim 6, characterized in that, The number of the connecting components is at least two, and the at least two connecting components are distributed circumferentially at intervals along the bearing housing (2).

9. The scroll compressor according to any one of claims 1-5, characterized in that, The stationary scroll (1) further includes stationary spiral teeth (13) connected to the lower end face of the stationary scroll body (11), and the outer peripheral portion (12) is located on the outer periphery of the stationary spiral teeth (13); the scroll compressor further includes a moving scroll (5), the moving scroll (5) includes a moving scroll body (51) and moving spiral teeth (52) connected to the upper end face of the moving scroll body (51); a compression cavity is formed between the stationary scroll body (11), the stationary spiral teeth (13), the outer peripheral portion (12), the moving scroll body (51) and the moving spiral teeth (52); The scroll compressor also includes a cross-shaped slip ring (6). The lower end face of the moving scroll body (51) is recessed with a first sliding groove (511), and the inner bottom wall of the receiving groove (211) is recessed with a second sliding groove (22). The upper key (61) of the cross-shaped slip ring (6) is slidably located in the first sliding groove (511), and the lower key (62) of the cross-shaped slip ring (6) is slidably located in the second sliding groove (22), so as to limit the moving scroll (5) relative to the stationary scroll (1). Translation; or, on the lower end face of the moving disk (51) and the inner bottom wall of the receiving groove (211), one is provided with at least two limiting posts (512) and the other is provided with at least two limiting grooves (23). At least two of the limiting posts (512) and at least two of the limiting grooves (23) are arranged in a one-to-one correspondence. The limiting posts (512) are movably inserted into the limiting grooves (23) to limit the translation of the moving volute (5) relative to the stationary volute (1).

10. The scroll compressor according to any one of claims 1-5, characterized in that: The stationary scroll (1) is fixed relative to the bearing housing (2) along its own axial direction; or, The stationary vortex disk (1) is floating relative to the bearing housing (2) along its own axial direction.

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