Scroll compressor

Abstract

The utility model belongs to the technical field of compressors, and discloses a scroll compressor. According to the scroll compressor, the outer edge of a silencing cover is fixed to the inner circumferential wall of a shell in a sealed mode in the circumferential direction to divide an inner cavity of the shell into a high-pressure cavity and a low-pressure cavity; the static vortex plate structure is arranged in the low-pressure cavity; the air inlet end of the static scroll plate body is communicated with the low-pressure cavity; the first end of the partial pressure cover is hermetically fixed on the periphery of the exhaust end assembly of the static scroll plate body, and the second end of the partial pressure cover is hermetically connected to the periphery of the air vent of the silencing cover; the partial pressure cover is used for communicating an exhaust end assembly of the static scroll plate body with the ventilation opening, and the flow area of the first end of the partial pressure cover is larger than that of the second end of the partial pressure cover. The reliability of the sealing connection of the static vortex plate body and the silencing cover is not limited by the shape of the silencing cover, the reliability of the sealing connection of the static vortex plate body and the silencing cover can be effectively improved, the machining difficulty and the machining precision of the silencing cover can be effectively reduced, and the assembling difficulty of assembling the silencing cover and the static vortex plate body into a whole can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor technical field especially relates to scroll compressor. BACKGROUND

[0002] The scroll compressor is composed of a shell, a sound insulation cover, a scroll compression assembly and a driving motor, a high-pressure cavity is formed between the sound insulation cover and the shell away from the scroll compression assembly, and a low-pressure cavity is formed between the sound insulation cover and the shell close to the scroll compression assembly.

[0003] Generally, the central area of the sound insulation cover is sealed and communicated with the static scroll of the scroll compression assembly, and the sealing and communication mode of the central area of the sound insulation cover and the static scroll in the prior art is mainly that the outer peripheral area of the sound insulation cover located at the exhaust end of the static scroll is abutted on the static scroll in the circumferential direction, and then a sealing ring is connected and matched through a screw, so that the high-pressure gas discharged from the exhaust end of the static scroll can effectively flow into the high-pressure cavity. However, the irregularity of the shape of the sound insulation cover itself can affect the reliability of the sealing connection of the sound insulation cover and the static scroll, and the machining precision of the sound insulation cover is high, which leads to high production cost and poor use performance. SUMMARY

[0004] The utility model discloses a scroll compressor, which solves the above problems of the scroll compressor in the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The scroll compressor comprises a shell, a sound insulation cover and a static scroll structure, the outer edge of the sound insulation cover is fixed in the circumferential direction to the inner peripheral wall of the shell to divide the inner cavity of the shell into a high-pressure cavity and a low-pressure cavity, the static scroll structure is arranged in the low-pressure cavity, and the static scroll structure comprises:

[0007] A static scroll body, the gas inlet end of the static scroll body is communicated with the low-pressure cavity;

[0008] A pressure distribution cover, the first end of the pressure distribution cover is fixed to the outer periphery of the exhaust end assembly of the static scroll body, the second end of the pressure distribution cover is sealingly connected to the outer periphery of the air inlet of the sound insulation cover, the pressure distribution cover is used to communicate the exhaust end assembly of the static scroll body and the air inlet, and the flow area of the first end of the pressure distribution cover is greater than the flow area of the second end of the pressure distribution cover.

[0009] As a preferred scheme of the scroll compressor, the first end face of the pressure distribution cover is fixed and supported on the top surface of the static scroll body, and a first sealing ring is arranged between the first end of the pressure distribution cover and the top surface of the static scroll body.

[0010] As a preferred scheme of the scroll compressor, the scroll compressor further comprises an elastic sealing structure, the elastic sealing structure comprises an elastic piece and a second sealing ring, a first installation limiting ring groove is arranged on the outer periphery of the second end of the pressure distribution cover at the communication between the pressure distribution cover and the sound insulation cover, one end of the elastic piece is fixedly arranged in the first installation limiting ring groove, and the other end of the elastic piece is fixedly connected with the second sealing ring.

[0011] As a preferred scheme of the scroll compressor, the static scroll body is fixedly arranged in the shell; or, the static scroll body is floatingly arranged in the shell.

[0012] As a preferred scheme of the scroll compressor, the scroll compressor further comprises a support structure, at least one of the pressure distribution cover and the sound insulation cover is fixedly provided with the support structure, the support structure is located on the outer periphery of the sealing connection between the pressure distribution cover and the sound insulation cover, and the static scroll structure can support the sound insulation cover through the support structure.

[0013] As a preferred scheme of the scroll compressor, the support structure comprises a first support part, one end of the first support part is fixedly connected with one of the pressure distribution cover and the sound insulation cover, and when the static scroll structure is in a non-compression working state, the other end of the first support part is spaced apart from the other one of the pressure distribution cover and the sound insulation cover and forms a sound insulation cover deformation gap; or,

[0014] The support structure comprises a first support part and a second support part, the second support part is spaced apart from the outer periphery of the first support part, one end of the first support part is fixedly connected with one of the pressure distribution cover and the sound insulation cover, when the static scroll structure is in a non-compression working state, the other end of the first support part is spaced apart from the other one of the pressure distribution cover and the sound insulation cover and forms a sound insulation cover deformation gap, one end of the second support part is fixedly connected with one of the sound insulation cover and the pressure distribution cover, and when the static scroll structure is in a non-compression working state, the other end of the second support part is spaced apart from the other one of the sound insulation cover and the pressure distribution cover and forms a sound insulation cover deformation gap.

[0015] As a preferred scheme of the scroll compressor, the support structure comprises the first support part and the second support part, and the support area of the second support part is greater than that of the first support part.

[0016] As a preferred scheme of the scroll compressor, the support structure comprises the first support part and the second support part;

[0017] The first supporting part is provided with a buffer member for buffering the force transmitted by the sound insulation cover to the first supporting part, and / or the second supporting part is provided with a buffer member for buffering the force transmitted by the sound insulation cover to the second supporting part.

[0018] As a preferred solution of the scroll compressor, a limiting protrusion is arranged on the outer periphery of the communication part between the pressure distribution cover and the sound insulation cover, and a second installation limiting ring groove is formed between the first supporting part and the limiting protrusion.

[0019] The scroll compressor further comprises a third sealing ring arranged in the second installation limiting ring groove, and the third sealing ring is used for sealing the gap between the pressure distribution cover and the sound insulation cover.

[0020] As a preferred solution of the scroll compressor, the supporting structure comprises the first supporting part and the second supporting part, and when the static scroll structure is in a non-compression working state, the deformation gap of the sound insulation cover corresponding to the first supporting part is greater than 0 and less than or equal to 1 mm, and the deformation gap of the sound insulation cover corresponding to the second supporting part is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0021] The beneficial effects of the utility model are as follows:

[0022] The utility model provides a scroll compressor, the scroll compressor includes a shell, a sound insulation cover and static scroll structure. Among them, the outer edge of sound insulation cover is sealed and fixed to the inner periphery wall of shell along the circumference and separates the inner chamber of shell into high pressure chamber and low pressure chamber. Static scroll structure is arranged in low pressure chamber, and static scroll structure includes static scroll body and pressure distribution cover, and the air inlet end of static scroll body is communicated with low pressure chamber. The first end of pressure distribution cover is sealed and fixed to the outer periphery of the air exhaust end assembly of static scroll body, and the second end of pressure distribution cover is sealed and connected to the outer periphery of the air vent of sound insulation cover. Pressure distribution cover is used for connecting the air exhaust end assembly of static scroll body and air vent, and the flow area of the first end of pressure distribution cover is greater than the flow area of the second end of pressure distribution cover.

[0023] This scroll compressor, by setting a pressure-dividing shroud between the stationary scroll body and the muffler cover, seals and fixes the first end of the pressure-dividing shroud to the outer periphery of the exhaust end assembly of the stationary scroll body, and seals and connects the second end of the pressure-dividing shroud to the outer periphery of the vent of the muffler cover. Furthermore, the flow area of ​​the first end of the pressure-dividing shroud is larger than the flow area of ​​the second end. This allows for both connection between the exhaust end assembly of the stationary scroll body and the vent of the muffler cover, and effective sealing of the stationary scroll body and the muffler cover, without altering their structural shapes. The outer periphery of the connecting part of the cover; secondly, a pressure-dividing cover is also provided to connect the exhaust end assembly of the stationary scroll body and the air vent of the muffler cover, so that the reliability of the sealing connection between the stationary scroll body and the muffler cover is not limited by the shape of the muffler cover. Therefore, compared with the existing technology, it can effectively improve the reliability of the sealing connection between the stationary scroll body and the muffler cover, and can effectively reduce the processing difficulty and processing precision of the muffler cover, and can effectively reduce the assembly difficulty of assembling the muffler cover and the stationary scroll body into a whole, thereby effectively reducing production costs and improving the performance of the scroll compressor. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of a scroll compressor provided in a specific embodiment of this utility model;

[0025] Figure 2 This is a partial cross-sectional view of a scroll compressor provided in a specific embodiment of this utility model. Figure 1 ;

[0026] Figure 3 This is an assembly drawing of the pressure-dividing cover and support structure provided in a specific embodiment of this utility model;

[0027] Figure 4 This is a partial cross-sectional view of a scroll compressor provided in a specific embodiment of this utility model. Figure 2 .

[0028] In the picture:

[0029] 1. Shell; 11. High-pressure chamber; 12. Low-pressure chamber; 13. Inlet; 14. Outlet;

[0030] 2. Silencer cover; 21. Vent;

[0031] 3. Static vortex structure; 31. Static vortex body; 32. Pressure dividing cover; 321. First mounting limiting ring groove; 322. Limiting protrusion; 3221. Second mounting limiting ring groove; 33. Connecting channel; 34. First sealing ring; 35. Elastic sealing structure; 351. Elastic element; 352. Second sealing ring; 3521. First sub-sealing ring part; 3522. Second sub-sealing ring part;

[0032] 4, support structure; 41, first support portion; 42, second support portion; 43, reinforcing connecting portion;

[0033] 5, main bearing block assembly; 51, thrust plate; 52, bearing block; 53, bearing mounting space;

[0034] 6, cylinder liner;

[0035] 7, orbiting scroll. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0040] Example one

[0041] The utility model provides a scroll compressor, as Figures 1-4 As shown in the figure, can effectively promote the reliability of the sealing connection of static vortex disc body 31 and silencing cover 2, and can effectively reduce the processing difficulty and processing precision of silencing cover 2, and can effectively reduce the assembly difficulty of assembling silencing cover 2 and static vortex disc body 31 into a whole, thereby can effectively reduce production cost, improve the use performance of the scroll compressor.

[0042] Specifically, the fluid compressed by the scroll compressor can be liquid or gas, and the following will be specifically introduced with the fluid compressed by the scroll compressor as gas.

[0043] As Figures 1-4 As shown in the figure, the scroll compressor comprises a shell 1, a silencing cover 2 and a static vortex disc structure 3. The outer edge of the silencing cover 2 is fixedly sealed in the circumferential direction on the inner circumferential wall of the shell 1 to divide the inner cavity of the shell 1 into a high-pressure cavity 11 and a low-pressure cavity 12. The static vortex disc structure 3 is arranged in the low-pressure cavity 12; the static vortex disc structure 3 comprises a static vortex disc body 31 and a pressure dividing cover 32, and the gas inlet end of the static vortex disc body 31 communicates with the low-pressure cavity 12; the first end of the pressure dividing cover 32 is fixedly sealed on the outer periphery of the gas outlet end assembly of the static vortex disc body 31, and the second end of the pressure dividing cover 32 is sealingly connected to the outer periphery of the air vent 21 of the silencing cover 2; the pressure dividing cover 32 is used to communicate the gas outlet end assembly of the static vortex disc body 31 and the air vent 21, and the flow area of the first end of the pressure dividing cover 32 is greater than the flow area of the second end of the pressure dividing cover 32. It can be understood that the air vent 21 communicates with the high-pressure cavity 11.

[0044] The scroll compressor, by setting the pressure dividing cover 32 between the static vortex disc body 31 and the silencing cover 2, sealingly fixing the first end of the pressure dividing cover 32 on the outer periphery of the gas outlet end assembly of the static vortex disc body 31, sealingly connecting the second end of the pressure dividing cover 32 to the outer periphery of the air vent 21 of the silencing cover 2, and setting the flow area of the first end of the pressure dividing cover 32 to be greater than the flow area of the second end of the pressure dividing cover 32, so that without changing the structure shape of the static vortex disc body 31 and the silencing cover 2, the gas outlet end assembly of the static vortex disc body 31 and the air vent 21 of the silencing cover 2 can be communicated, and the communication outer periphery of the static vortex disc body 31 and the silencing cover 2 can be effectively sealed; secondly, the pressure dividing cover 32 is also arranged to communicate the gas outlet end assembly of the static vortex disc body 31 and the air vent 21 of the silencing cover 2, so that the reliability of the sealing connection of the static vortex disc body 31 and the silencing cover 2 is not limited by the shape of the silencing cover 2, thereby effectively improving the reliability of the sealing connection of the static vortex disc body 31 and the silencing cover 2 relative to the prior art, and effectively reducing the processing difficulty and processing precision of the silencing cover 2, and effectively reducing the assembly difficulty of assembling the silencing cover 2 and the static vortex disc body 31 into a whole, thereby effectively reducing production cost and improving the use performance of the scroll compressor.

[0045] Specifically, the exhaust end assembly of the static volute body 31 at least comprises an exhaust port. Specifically, the exhaust end assembly of the static volute body 31 can also comprise an exhaust valve and / or a variable volume proportional valve, etc. The specific structure of the exhaust end assembly of the static volute body 31 depends on the actual working condition requirements. It can be understood that when the exhaust end assembly of the static volute body 31 comprises an exhaust valve and / or a variable volume proportional valve, etc., the top outer diameter of the static volute body 31 will be larger, so the pressure distribution cover 32 is arranged to communicate the exhaust end assembly of the static volute body 31 and the air inlet 21 of the sound cover 2, which also makes the reliability of the sealed connection between the static volute body 31 and the sound cover 2 not limited by the specific structure and shape of the static volute body 31, thereby further improving the reliability of the sealed connection between the static volute body 31 and the sound cover 2. The specific structure of the exhaust end assembly of the static volute body 31 belongs to the prior art, and will not be described here.

[0046] Specifically, as shown in Figure 2 , the scroll compressor further comprises a dynamic volute 7 and a driving motor. The stator of the driving motor is fixedly arranged in the shell 1, the driving shaft of the driving motor is fixedly arranged through the rotor of the driving motor and connected with the dynamic volute 7, and the driving shaft can drive the dynamic volute 7 to engage with the static volute body 31. Under the action of pressure difference, the gas in the low-pressure cavity 12 can automatically flow into the compression cavity formed by the dynamic volute 7 and the static volute body 31, and after being compressed into high-pressure gas, it flows into the high-pressure cavity 11 through the exhaust end assembly of the static volute structure 3, the pressure distribution cover 32 and the air inlet 21.

[0047] Specifically, as shown in Figure 1 , the shell 1 is provided with an inlet 13 communicating with the low-pressure cavity 12, and an outlet 14 communicating with the high-pressure cavity 11. The gas flows into the low-pressure cavity 12 from the inlet 13, and under the action of pressure difference, the gas in the low-pressure cavity 12 automatically flows into the compression cavity formed by the dynamic volute 7 and the static volute structure 3, and after being compressed into high-pressure gas, it flows into the high-pressure cavity 11 through the pressure distribution cover 32 and the air inlet 21, and finally flows out through the outlet 14.

[0048] Among them, as shown in Figure 2 , the first end face of the pressure distribution cover 32 is in contact with the top surface of the static volute body 31 and is fixedly supported thereon, and a first sealing ring 34 is arranged between the first end of the pressure distribution cover 32 and the top surface of the static volute body 31. Specifically, the first end face of the pressure distribution cover 32 is in contact with the top surface of the static volute body 31 and is fixedly supported thereon. The first sealing ring 34 is used to seal the gap between the first end face of the pressure distribution cover 32 and the top surface of the static volute body 31. By arranging the first end face of the pressure distribution cover 32 in contact with the top surface of the static volute body 31 and being fixedly supported thereon, the effect of sealing the gap between the first end of the pressure distribution cover 32 and the top surface of the static volute body 31 by the first sealing ring 34 can be further improved.

[0049] Specifically, in this embodiment, as shown in Figure 2As shown, the top surface of the exemplary stationary scroll body 31 is recessed with a third installation limiting ring groove, and the first sealing ring 34 is arranged in the third installation limiting ring groove. The arrangement position of the first sealing ring 34 can be limited, so as to effectively guarantee the effect of sealing the gap between the first end of the pressure distribution cover 32 and the top surface of the stationary scroll body 31. As an alternative, the end surface of the first end of the pressure distribution cover 32 is recessed with a third installation limiting ring groove, and the first sealing ring 34 is arranged in the third installation limiting ring groove.

[0050] Specifically, in the present embodiment, the first end of the pressure distribution cover 32 is fixedly connected with the top of the stationary scroll body 31 by screws. This facilitates disassembly and maintenance. As an alternative, the fixed connection between the pressure distribution cover 32 and the stationary scroll body 31 can also be achieved by bolt connection or welding.

[0051] Among them, as shown in the drawings, Figures 2-4 As shown, the scroll compressor further comprises an elastic sealing structure 35, the elastic sealing structure 35 comprises an elastic member 351 and a second sealing ring 352, the second end of the pressure distribution cover 32 is provided with a first installation limiting ring groove 321 at the outer periphery of the communication between the pressure distribution cover 32 and the sound insulation cover 2, one end of the elastic member 351 is fixedly arranged in the first installation limiting ring groove 321, and the other end of the elastic member 351 is fixedly connected with the second sealing ring 352. Specifically, the force applied by the elastic member 351 to the second sealing ring 352 causes the second sealing ring 352 to seal the gap between the inner wall of the first installation limiting ring groove 321 and the sound insulation cover 2. In this way, the second end of the pressure distribution cover 32 is sealed and connected to the outer periphery of the air passage 21 of the sound insulation cover 2. It can be understood that in this way, the elastic sealing structure 35 is suitable for both scroll compressors in which the stationary scroll structure 3 is fixedly arranged in the shell 1 and scroll compressors in which the stationary scroll body 31 is floatingly arranged in the shell 1, and can effectively seal the outer periphery of the second end of the pressure distribution cover 32 and the air passage 21 of the sound insulation cover 2.

[0052] Specifically, the first end of the elastic member 351 is fixedly arranged in the first installation limiting ring groove 321, and the second end of the elastic member 351 is fixedly connected with the second sealing ring 352.

[0053] Specifically, as shown in the drawings, Figure 4 The second sealing ring 352 comprises a first sub-sealing ring portion 3521 and a second sub-sealing ring portion 3522 arranged at right angles, the first sub-sealing ring portion 3521 is fixedly sleeved on the outer periphery of the second end of the elastic member 351 and tightly contacts with the inner wall of the first installation limiting ring groove 321, and the second sub-sealing ring portion 3522 is fixedly arranged above the second end of the elastic member 351 and tightly contacts with the bottom wall of the sound insulation cover 2. In this way, the second sealing ring 352 seals the gap between the inner wall of the first installation limiting ring groove 321 and the sound insulation cover 2.

[0054] Preferably, the first sub-seal ring part 3521 and the second sub-seal ring part 3522 of the second seal ring 352 are integrally formed. The sealing performance of the second seal ring 352 can be further improved, and the number of parts can be reduced.

[0055] As an alternative, the second seal ring 352 is a circular ring seal ring. The outer diameter of the second seal ring 352 in a free state is greater than the inner diameter of the first installation limiting ring groove 321. The second seal ring 352 is in close contact with the inner peripheral wall of the first installation limiting ring groove 321, and the second seal ring 352 is in close contact with the bottom wall of the sound cover 2. The second seal ring 352 can also seal the gap between the inner wall of the first installation limiting ring groove 321 and the sound cover 2.

[0056] Specifically, as shown in Figures 1-4 , the inside of the pressure distribution cover 32 is formed with a communication passage 33 that communicates the exhaust end assembly of the static scroll body 31 and the air vent 21 of the sound cover 2. The first installation limiting ring groove 321 is located on the outer periphery of the communication passage 33. Preferably, the first installation limiting ring groove 321 directly communicates with the communication passage 33. In order to reduce the structural complexity and weight of the pressure distribution cover 32. As an alternative, the first installation limiting ring groove 321 communicates with the communication passage 33 through the gap between the second end of the pressure distribution cover 32 and the sound cover 2.

[0057] Preferably, as shown in Figures 1-4 , the outer diameter of the pressure distribution cover 32 gradually decreases from the first end of the pressure distribution cover 32 to the second end of the pressure distribution cover 32, and the flow area of the communication passage 33 gradually decreases. In this way, for the pressure distribution cover 32, it is convenient to avoid other structures inside the shell 1, and the support stability of the pressure distribution cover 32 is good. In this embodiment, the pressure distribution cover 32 is conical, and the communication passage 33 is conical. In other embodiments, the pressure distribution cover 32 is stepped from the first end of the pressure distribution cover 32 to the second end of the pressure distribution cover 32, and the communication passage 33 is stepped.

[0058] Specifically, in this embodiment, as shown in Figure 4 , the elastic member 351 is a spring. As an alternative, the elastic member 351 is a structure such as an elastic pad.

[0059] Wherein, as shown in Figures 1-3 , the scroll compressor further comprises a support structure 4, at least one of the pressure distribution cover 32 and the sound cover 2 is fixedly provided with the support structure 4, and the support structure 4 is located on the outer periphery of the sealing connection between the pressure distribution cover 32 and the sound cover 2; the static scroll structure 3 can support the sound cover 2 through the support structure 4.

[0060] When the scroll compressor is working, the gas enters the static scroll body 31 from the low-pressure cavity 12 through the gas inlet end of the static scroll body 31, and flows into the compression cavity formed by the dynamic scroll 7 and the static scroll body 31. After the high-pressure gas is formed in the compression cavity, it flows into the communication passage 33 of the pressure distribution cover 32 through the gas outlet end of the static scroll body 31, and finally flows into the high-pressure cavity 11 through the air vent 21 of the sound insulation cover 2. By fixedly arranging the support structure 4 on at least one of the pressure distribution cover 32 and the sound insulation cover 2, and the support structure 4 is located at the outer periphery of the sealing connection between the sound insulation cover 2 and the pressure distribution cover 32, that is, the support structure 4 is located at the outer periphery of the elastic sealing structure 35, so that at least one of the area of the sound insulation cover 2 which is sealingly connected with the pressure distribution cover 32 and the outer periphery of the sealing connection between the pressure distribution cover 32 and the sound insulation cover 2 can be supported, thereby effectively increasing the support area of the sound insulation cover 2 compared with the prior art, so that when the high-pressure gas in the high-pressure cavity 11 exerts a larger force on the sound insulation cover 2, the risk of deformation failure of the sound insulation cover 2 can be effectively reduced, and the risk of failure of the sealing and fixing of the outer edge of the sound insulation cover 2 and the inner peripheral wall of the shell 1 can be effectively reduced, thereby improving the working performance and service life of the sound insulation cover 2.

[0061] It can be understood that, in some embodiments, as shown in Figures 1-3 , the support structure 4 is arranged on the pressure distribution cover 32 to support the sound insulation cover 2. In other embodiments, the support structure 4 is arranged on the sound insulation cover 2 to support the pressure distribution cover 32. In other embodiments, the support structure 4 is arranged on the pressure distribution cover 32 to support the sound insulation cover 2, and the support structure 4 is arranged on the sound insulation cover 2 to support the pressure distribution cover 32.

[0062] Specifically, the sound insulation cover 2 separates the inner cavity of the shell 1 into the high-pressure cavity 11 and the low-pressure cavity 12 along the orientation. The orientation is the height direction of the shell 1, which is also Figure 1 the up-down direction, and also Figure 2 the up-down direction.

[0063] Specifically, in the present embodiment, as shown in Figure 1 and Figure 2 , the central region of the sound insulation cover 2 is sealingly connected to the pressure distribution cover 32, that is, the air vent 21 is arranged at the central region of the sound insulation cover 2. So that after the high-pressure gas enters the high-pressure cavity 11, it can be diffused from the central region of the high-pressure cavity 11 to the surrounding regions of the high-pressure cavity 11, so as to improve the working performance of the scroll compressor. In other embodiments, the air vent 21 can also be arranged at any other set region deviating from the central region of the sound insulation cover 2 according to the actual working condition requirements.

[0064] Specifically, the sealing and fixing manner of the outer edge of the sound cover 2 and the inner circumferential wall of the shell 1 is welding. In other embodiments, the outer edge of the sound cover 2 and the inner circumferential wall of the shell 1 are connected by bolts, screws, or the like in cooperation with a fourth sealing ring, which can realize the sealing and fixing of the outer edge of the sound cover 2 and the inner circumferential wall of the shell 1.

[0065] The support structure 4 includes a first support part 41, or, as shown in Figures 1-4 The support structure 4 includes a first support part 41 and a second support part 42.

[0066] Optionally, as shown in Figures 1-4 One end of the first support part 41 is fixedly connected with one of the sound cover 2 and the pressure distribution cover 32, and the other end of the first support part 41 is spaced apart from the other one of the sound cover 2 and the pressure distribution cover 32 to form a sound cover deformation gap when the static vortex disc structure 3 is in a non-compression working state.

[0067] The first support part 41 is fixedly connected with the pressure distribution cover 32, and the other end of the first support part 41 is spaced apart from the sound cover 2 to form a sound cover deformation gap when the static vortex disc structure 3 is in a non-compression working state. Further, when the static vortex disc structure 3 is in a compression working state, the sound cover 2 can be deformed under the action of the high-pressure gas in the high-pressure cavity 11 and contact the first support part 41 supported on the static vortex disc structure 3.

[0068] The first support part 41 is fixedly connected with the sound cover 2, and the other end of the first support part 41 is spaced apart from the pressure distribution cover 32 to form a sound cover deformation gap. Further, when the static vortex disc structure 3 is in a compression working state, the sound cover 2 can be deformed under the action of the high-pressure gas in the high-pressure cavity 11, so that the first support part 41 contacts the static vortex disc structure 3 supported thereon.

[0069] Optionally, as shown in Figures 1-4 One end of the second support part 42 is fixedly connected with one of the sound cover 2 and the pressure distribution cover 32, and the other end of the second support part 42 is spaced apart from the other one of the sound cover 2 and the pressure distribution cover 32 to form a sound cover deformation gap when the static vortex disc structure 3 is in a non-compression working state.

[0070] The second support part 42 is fixedly connected with the pressure distribution cover 32, and the other end of the second support part 42 is spaced apart from the sound cover 2 to form a sound cover deformation gap when the static vortex disc structure 3 is in a non-compression working state. Further, when the static vortex disc structure 3 is in a compression working state, the sound cover 2 can be deformed under the action of the high-pressure gas in the high-pressure cavity 11 and contact the second support part 42 supported thereon.

[0071] The second supporting part 42 is fixedly connected with the muffling cover 2, and when the static volute structure 3 is in a non-compression working state, the other end of the second supporting part 42 is spaced apart from the pressure distribution cover 32 and forms a muffling cover deformation gap. Further, when the static volute structure 3 is in a compression working state, the muffling cover 2 can be deformed under the action of the high-pressure gas in the high-pressure cavity 11, so that the second supporting part 42 is in contact with and supported on the static volute structure 3.

[0072] In this way, the static volute structure 3 can support the muffling cover 2 through the supporting structure 4, and the central region of the muffling cover 2 and at least one region outside the periphery of the central region of the muffling cover 2 are both supported, so that the muffling cover 2 can effectively deform without being damaged, and the supporting area of the muffling cover 2 can be effectively increased, thereby effectively reducing the risk of deformation failure of the muffling cover 2 and the risk of failure of the sealing and fixed position of the outer edge of the muffling cover 2 and the inner peripheral wall of the shell 1.

[0073] As an alternative, one end of the first supporting part 41 is fixedly connected with the pressure distribution cover 32, and the other end of the first supporting part 41 is in contact with and supports the muffling cover 2. As an alternative, one end of the first supporting part 41 is fixedly connected with the muffling cover 2, and the other end of the first supporting part 41 is in contact with and supported on the pressure distribution cover 32.

[0074] As an alternative, one end of the second supporting part 42 is fixedly connected with the pressure distribution cover 32, and the other end of the second supporting part 42 is in contact with and supports the muffling cover 2. As an alternative, one end of the second supporting part 42 is fixedly connected with the muffling cover 2, and the other end of the second supporting part 42 is in contact with and supported on the pressure distribution cover 32.

[0075] In the embodiment, as shown in Figures 1-4 Preferably, the supporting structure 4 includes a first supporting part 41 and a second supporting part 42, the second supporting part 42 is spaced apart from the periphery of the first supporting part 41; one end of the first supporting part 41 is fixedly connected with one of the pressure distribution cover 32 and the muffling cover 2, and the other end of the first supporting part 41 is spaced apart from the other one of the pressure distribution cover 32 and the muffling cover 2 and forms a muffling cover deformation gap when the static volute structure 3 is in a non-compression working state; one end of the second supporting part 42 is fixedly connected with one of the muffling cover 2 and the pressure distribution cover 32, and the other end of the second supporting part 42 is spaced apart from the other one of the muffling cover 2 and the pressure distribution cover 32 and forms a muffling cover deformation gap when the static volute structure 3 is in a non-compression working state. Especially when the high-pressure gas in the high-pressure cavity 11 exerts a larger force on the muffling cover 2, such an arrangement not only ensures that the muffling cover 2 can effectively deform without failure, but also further increases the supporting area of the muffling cover 2, thereby further reducing the risk of deformation failure of the muffling cover 2 and the risk of failure of the sealing and fixed position of the outer edge of the muffling cover 2 and the inner peripheral wall of the shell 1.

[0076] It can be understood that, for the support structure 4 only comprising the first support part 41, the setting position of the first support part 41 along the radial direction of the sound cover 2 can be adaptively adjusted according to actual working condition requirements. For the support structure 4 comprising the first support part 41 and the second support part 42, the setting position of the first support part 41 and the second support part 42 along the radial direction of the sound cover 2 can be adaptively adjusted according to actual working condition requirements, and / or the interval between the first support part 41 and the second support part 42 along the radial direction of the sound cover 2 can be adjusted.

[0077] In some embodiments, as shown in FIG. 1, the first support part 41 is annular. The support performance on the sound cover 2 can be further improved. Further optionally, the number of the first support part 41 is plural, and the plural first support parts 41 are distributed along the radial direction of the sound cover 2. The support performance on the sound cover 2 can be further improved. Figures 1-4 In other embodiments, the number of the first support part 41 is plural, and the plural first support parts 41 are divided into at least one first support part group, each first support part group comprising plural first support parts 41 distributed along the circumferential direction of the sound cover 2. When the number of the first support part group is greater than or equal to 2, the plural first support part groups are distributed along the radial direction of the sound cover 2. The support performance on the sound cover 2 can also be further improved.

[0078] In other embodiments, the support performance on the sound cover 2 can also be further improved by increasing the support area of the first support part 41.

[0079] In the present embodiment, as shown in FIG. 1, the first support part 41 is annular, and the number of the first support part 41 is one.

[0080] Figures 1-4 In some embodiments, the second support part 42 is annular. The support area of the second support part 42 can be further increased, so as to further improve the support performance on the sound cover 2. Further optionally, the number of the second support part 42 is plural, and the plural second support parts 42 are distributed along the radial direction of the sound cover 2. The support performance on the sound cover 2 can be further improved.

[0081] In other embodiments, the number of the second support part 42 is plural, and the plural second support parts 42 are divided into at least one second support part group, each second support part group comprising plural second support parts 42 distributed along the circumferential direction of the sound cover 2. When the number of the second support part group is greater than or equal to 2, the plural second support part groups are distributed along the radial direction of the sound cover 2. The support performance on the sound cover 2 can also be further improved.

[0082] In other embodiments, the number of the second support part 42 is plural, and the plural second support parts 42 are divided into at least one second support part group, each second support part group comprising plural second support parts 42 distributed along the circumferential direction of the sound cover 2. When the number of the second support part group is greater than or equal to 2, the plural second support part groups are distributed along the radial direction of the sound cover 2. The support performance on the sound cover 2 can also be further improved.

[0083] ​In other embodiments, the support performance of the sound cover 2 can be further improved by increasing the support area of the second support part 42.

[0084] In the present embodiment, as shown in Figures 1-4 the second support part group includes six second support parts 42 distributed along the circumference of the sound cover 2.

[0085] Preferably, in the present embodiment, the total support area of the second support part 42 is greater than the total support area of the first support part 41. In other embodiments, the total support area of the second support part 42 is equal to the total support area of the first support part 41. In other embodiments, the total support area of the second support part 42 is less than the total support area of the first support part 41. In the present embodiment, it is preferred that the total support area of the second support part 42 is greater than the total support area of the first support part 41. The support performance of the sound cover 2 can be further improved.

[0086] Preferably, the support surface of the first support part 41 is manufactured in shape. In other words, when the pressure distribution cover 32 is fixedly connected with the first support part 41, the end surface of the first support part 41 for supporting the sound cover 2 is completely identical in shape with the corresponding part on the bottom wall of the sound cover 2. When the sound cover 2 is fixedly connected with the first support part 41, the end surface of the first support part 41 for supporting the pressure distribution cover 32 is completely identical in shape with the corresponding part on the top surface of the static vortex disc structure 3. The support performance of the first support part 41 for supporting the sound cover 2 is further improved. In other embodiments, the support surface of the first support part 41 can also be provided as a plane, an inclined plane or a curved surface, etc.

[0087] Preferably, the support surface of the second support part 42 is manufactured in shape. In other words, when the pressure distribution cover 32 is fixedly connected with the second support part 42, the end surface of the second support part 42 for supporting the sound cover 2 is completely identical in shape with the corresponding part on the bottom wall of the sound cover 2. When the sound cover 2 is fixedly connected with the second support part 42, the end surface of the second support part 42 for supporting the pressure distribution cover 32 is completely identical in shape with the corresponding part on the top surface of the static vortex disc structure 3. The support performance of the second support part 42 for supporting the sound cover 2 is further improved. In other embodiments, the support surface of the second support part 42 can also be provided as a plane, an inclined plane or a curved surface, etc.

[0088] The support structure 4 further includes a buffer member.

[0089] Optionally, for one end of the first support part 41 being fixedly connected with one of the sound attenuation cover 2 and the pressure distribution cover 32, when the static vortex disc structure 3 is in the non-compression working state, the other end of the first support part 41 is spaced apart from the other one of the sound attenuation cover 2 and the pressure distribution cover 32 and forms the sound attenuation cover deformation gap, and the first support part 41 is provided with a buffer member for buffering the force transmitted from the sound attenuation cover 2 to the first support part 41. The buffer member can buffer the force applied by the sound attenuation cover 2 to the first support part 41, thereby further reducing the risk of deformation failure of the sound attenuation cover 2 and further reducing the risk of failure of the sealing and fixing position of the outer edge of the sound attenuation cover 2 to the inner circumferential wall of the shell 1.

[0090] Specifically, for the first support part 41 being fixedly connected with the pressure distribution cover 32 and being provided with the buffer member, when the static vortex disc structure 3 is in the non-compression working state, the other end of the buffer member contacts the sound attenuation cover 2 or the other end of the buffer member is spaced apart from the sound attenuation cover 2. For the first support part 41 being fixedly connected with the sound attenuation cover 2 and being provided with the buffer member, when the static vortex disc structure 3 is in the non-compression working state, the other end of the buffer member contacts the pressure distribution cover 32 or the other end of the buffer member is spaced apart from the static vortex disc structure 3.

[0091] Further, it is preferred that the support surface of the first support part 41 is fixedly provided with the buffer member. In other embodiments, the side wall of the first support part 41 is fixedly provided with the buffer member. The support surface of the first support part 41 is the end surface of the first support part 41 forming the sound attenuation cover deformation gap.

[0092] Optionally, for one end of the second support part 42 being fixedly connected with one of the sound attenuation cover 2 and the pressure distribution cover 32, when the static vortex disc structure 3 is in the non-compression working state, the other end of the second support part 42 is spaced apart from the other one of the sound attenuation cover 2 and the pressure distribution cover 32 and forms the sound attenuation cover deformation gap, and the second support part 42 is provided with a buffer member for buffering the force transmitted from the sound attenuation cover 2 to the second support part 42. The buffer member can buffer the force applied by the sound attenuation cover 2 to the second support part 42, thereby further reducing the risk of deformation failure of the sound attenuation cover 2 and further reducing the risk of failure of the sealing and fixing position of the outer edge of the sound attenuation cover 2 to the inner circumferential wall of the shell 1.

[0093] Specifically, for the second support part 42 being fixedly connected with the pressure distribution cover 32 and being provided with the buffer member, when the static vortex disc structure 3 is in the non-compression working state, the other end of the buffer member contacts the sound attenuation cover 2 or the other end of the buffer member is spaced apart from the sound attenuation cover 2. For the second support part 42 being fixedly connected with the sound attenuation cover 2 and being provided with the buffer member, when the static vortex disc structure 3 is in the non-compression working state, the other end of the buffer member contacts the pressure distribution cover 32 or the other end of the buffer member is spaced apart from the static vortex disc structure 3.

[0094] Furthermore, it is preferable that a buffer member is fixedly provided on the support surface of the second support portion 42. In other embodiments, a buffer member is fixedly provided on the side wall of the second support portion 42.

[0095] Furthermore, the buffer element is preferably a fifth sealing ring. In other embodiments, the buffer element is an elastic pad or a spring, etc.

[0096] Optionally, such as Figures 2-4 As shown, a limiting protrusion 322 is provided at the outer periphery of the connection between the pressure dividing cover 32 and the silencer cover 2 at the second end of the pressure dividing cover 32. A second mounting limiting annular groove 3221 is formed between the first support part 41 and the limiting protrusion 322. The scroll compressor also includes a third sealing ring, which is disposed in the second mounting limiting annular groove 3221. The third sealing ring is used to seal the gap between the pressure dividing cover 32 and the silencer cover 2. This arrangement can further improve the reliability of high-pressure gas flowing from the exhaust end assembly of the stationary scroll structure 3 to the high-pressure chamber 11, and can also prevent the setting position of the third sealing ring from changing. In other words, the first support part 41 can both support the silencer cover 2 and cooperate with the limiting protrusion 322 to limit the setting position of the third sealing ring, so that the function of the first support part 41 is integrated and the number of parts can be effectively reduced.

[0097] Specifically, when the stationary scroll structure 3 is in a non-compression working state, the third sealing ring and the muffler cover 2 are spaced apart or in close contact; when the stationary scroll structure 3 is in a compression working state, the third sealing ring and the muffler cover 2 are in close contact.

[0098] Furthermore, for the buffer component provided on the inner side wall of the first support part 41, which is the fifth sealing ring, it is preferable that the fifth sealing ring and the third sealing ring are the same sealing ring. This can not only buffer the force applied to the muffler cover 2, but also seal the gap between the pressure distribution cover 32 and the muffler cover 2 when the static vortex structure 3 is in a compressed working state, so that the functions of the sealing ring are integrated and the number of parts can be further effectively reduced.

[0099] It is understandable that, along the radial direction of the muffler cover 2, when multiple first support portions 41 are provided, a second mounting limiting annular groove 3221 is formed between the limiting protrusion 322 and an adjacent first support portion 41.

[0100] Optionally, for a plurality of first support portions 41 along the radial direction of the muffler cover 2, a sixth sealing ring may be provided between any two adjacent first support portions 41.

[0101] Optionally, a seventh sealing ring is provided between the first support portion 41 and an adjacent second support portion 42. Further optionally, for a plurality of second support portions 41 along the radial direction of the silencer cover 2, an eighth sealing ring may be provided between any two adjacent second support portions 41.

[0102] Optionally, such as Figures 1-4 As shown, the support structure 4 includes a first support portion 41 and a second support portion 42. The support structure 4 also includes a reinforcing connecting portion 43, which connects the first support portion 41 and its adjacent second support portion 42 along the radial direction of the pressure-distributing cover 32, connects any two adjacent first support portions 41, and connects any two adjacent second support portions 42. This arrangement improves the support reliability of the support structure 4. In this embodiment, six reinforcing connecting portions 43 are provided, with each of the six reinforcing connecting portions 43 corresponding to one of the six second support portions 42.

[0103] Preferably, the first support portion 41, the second support portion 42, and the reinforcing connection portion 43 of the support structure 4 are integrally formed. This reduces the number of parts, provides good structural strength, and facilitates assembly and disassembly.

[0104] Preferably, when the muffler cover 2 is provided with a support structure 4, the support structure 4 is integrally formed on the muffler cover 2. This reduces the number of parts and facilitates assembly and disassembly.

[0105] Preferably, such as Figures 1-4 As shown, when the pressure divider cover 32 is provided with a support structure 4, the support structure 4 is integrally formed on the pressure divider cover 32. This reduces the number of parts and facilitates assembly and disassembly.

[0106] In this embodiment, as Figures 1-3 As shown, the preferred pressure divider 32 is provided with a support structure 4, and the support structure 4 is integrally formed on the pressure divider 32.

[0107] Preferably, such as Figures 1-4As shown, the support structure 4 comprises a first support part 41 and a second support part 42. When the static scroll structure 3 is in the non-compressed working state, the sound cover deformation gap corresponding to the first support part 41 is greater than zero and less than or equal to 1 mm, and the sound cover deformation gap corresponding to the second support part 42 is greater than or equal to 0.5 mm and less than or equal to 2 mm. It can be understood that, along the radial direction of the pressure distribution cover 32, from the center of the pressure distribution cover 32 to the outer periphery of the pressure distribution cover 32, the sound cover deformation gap increases, so that the outer peripheral region of the sound cover 2 can deform more relative to the central region of the sound cover 2, thereby further reducing the risk of deformation failure of the sound cover 2 and further reducing the risk of failure of the sealing and fixing of the outer edge of the sound cover 2 and the inner peripheral wall of the shell 1. Wherein, the sound cover deformation gap corresponding to the first support part 41 is greater than zero and less than or equal to 1 mm, and the sound cover deformation gap corresponding to the second support part 42 is greater than or equal to 0.5 mm and less than or equal to 2 mm. Both are the experience range obtained by combining theoretical analysis and a large number of previous tests.

[0108] Further preferably, the limiting protrusion 322 and the bottom wall of the sound cover 2 also form a sound cover deformation gap. The sound cover deformation gap corresponding to the limiting protrusion 322 has the same value as the sound cover deformation gap corresponding to the first support part 41. Thus, the support area of the sound cover 2 after a certain deformation can be further increased, thereby further reducing the risk of deformation failure of the sound cover 2.

[0109] Further preferably, the limiting protrusion 322 is integrally formed on the pressure distribution cover 32. This can reduce the number of parts and facilitate assembly and disassembly.

[0110] Embodiment Two

[0111] The embodiment includes the scroll compressor described in Embodiment One.

[0112] As shown in Figure 1 and Figure 2 , the static scroll body 31 is fixedly arranged in the low-pressure cavity 12. In this way, the force applied to the sound cover 2 is transmitted to the shell 1 from the pressure distribution cover 32 and the static scroll body 31 in turn, which can buffer and disperse the force applied to the sound cover 2.

[0113] Preferably, as shown in Figure 1As shown, the scroll compressor further comprises a main bearing seat assembly 5 fixedly arranged in the low-pressure cavity 12. In terms of orientation, the main bearing seat assembly 5 is away from the soundproof cover 2 relative to the static scroll structure 3. The static scroll body 31 is fixedly connected to the main bearing seat assembly 5 and is spaced apart from the inner circumferential wall of the shell 1. In this way, the force applied to the soundproof cover 2 is sequentially transmitted from the pressure distribution cover 32 and the static scroll body 31 to the main bearing seat assembly 5, which can increase the transmission path of the force applied by the high-pressure gas in the high-pressure cavity 11 to the soundproof cover 2, thereby further reducing the risk of deformation failure of the soundproof cover 2 and further reducing the risk of failure of the sealing and fixing position of the outer edge of the soundproof cover 2 and the inner circumferential wall of the shell 1.

[0114] Specifically, as shown in the drawings, Figure 1 The main bearing seat assembly 5 comprises a thrust plate 51 and a bearing seat 52 connected together, and a bearing mounting space 53 is formed between the thrust plate 51 and the bearing seat 52. The bearing mounting space 53 is used to mount a bearing, and the driving shaft of the driving motor is fixedly arranged through the rotor of the driving motor, the inner ring of the bearing, and is connected with the moving scroll 7. The stability and smoothness of the driving motor driving the moving scroll 7 can be improved. The fixed connection between the thrust plate 51 and the bearing seat 52 can be welding, threaded connection or pin shaft connection, etc.

[0115] Further specifically, as shown in the drawings, Figure 1 In terms of orientation, the bearing seat 52 is away from the static scroll body 31 relative to the thrust plate 51; and the thrust plate 51 is further fixedly connected with the static scroll body 31. In this way, the force applied to the soundproof cover 2 is transmitted from the static scroll structure 3 to the bearing seat 52. The fixed connection between the static scroll body 31 and the thrust plate 51 can be welding, threaded connection or pin shaft connection, etc.

[0116] Further preferably, as shown in the drawings, Figure 1 The scroll compressor further comprises a cylinder sleeve 6 fixedly connected to the inner circumferential wall of the shell 1. In terms of orientation, the cylinder sleeve 6 is away from the static scroll structure 3 relative to the main bearing seat assembly 5. The main bearing seat assembly 5 is fixedly connected to the cylinder sleeve 6 and is spaced apart from the inner circumferential wall of the shell 1. Specifically, the bearing seat 52 is fixedly connected to the cylinder sleeve 6 and is spaced apart from the inner circumferential wall of the shell 1. In this way, the fixed position of the main bearing seat assembly 5 in the low-pressure cavity 12 is achieved, and the transmission path of the force applied by the high-pressure gas in the high-pressure cavity 11 to the soundproof cover 2 is further increased, thereby further reducing the risk of deformation failure of the soundproof cover 2 and further reducing the risk of failure of the sealing and fixing position of the outer edge of the soundproof cover 2 and the inner circumferential wall of the shell 1. The fixed connection between the cylinder sleeve 6 and the inner circumferential wall of the shell 1 can be one-piece, interference insertion, welding, screw connection, bolt connection or pin shaft connection, etc. The stator of the driving motor is fixedly arranged in the cylinder sleeve 6.

[0117] As an alternative, the static scroll body 31 is fixedly connected to the shell 1 to achieve the fixed setting position of the static scroll body 31 in the low-pressure cavity 12. The fixed connection between the static scroll body 31 and the shell 1 can be welding, screw connection, bolt connection or pin shaft connection, etc.

[0118] As an alternative, the thrust plate 51 is fixedly connected to the shell 1 to achieve the fixed setting position of the static scroll body 31 and the thrust plate 51 in the low-pressure cavity 12. The fixed connection between the thrust plate 51 and the shell 1 can be welding, screw connection, bolt connection or pin shaft connection, etc.

[0119] As an alternative, the bearing seat 52 is fixedly connected to the shell 1 to achieve the fixed setting position of the static scroll body 31 and the bearing seat 52 in the low-pressure cavity 12. The fixed connection between the bearing seat 52 and the shell 1 can be welding, screw connection, bolt connection or pin shaft connection, etc.

[0120] Embodiment three

[0121] The embodiment includes the scroll compressor described in Embodiment One.

[0122] The static scroll body 31 is arranged in the low-pressure cavity 12 in a directional sliding manner. Specifically, when the static scroll structure 3 is static, the static scroll body 31 is arranged in a directional interval with the inner bottom wall of the dynamic scroll 7. The specific structure of the static scroll body 31 arranged in the low-pressure cavity 12 in a directional sliding manner belongs to the prior art, and thus is not described here.

[0123] Obviously, the above embodiments of the present application are merely examples for clear illustration of the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A scroll compressor comprising a housing (1), a soundproof cover (2) and a static scroll structure (3); the outer edge of the soundproof cover (2) is fixedly sealed to the inner circumferential wall of the housing (1) in a circumferential direction to divide the inner cavity of the housing (1) into a high-pressure cavity (11) and a low-pressure cavity (12); the static scroll structure (3) is arranged in the low-pressure cavity (12); characterized in that, The static scroll structure (3) comprises: a static scroll body (31), an intake end of the static scroll body (31) being in communication with the low-pressure cavity (12); a pressure distribution cover (32), a first end of the pressure distribution cover (32) being sealingly fixed to an outer periphery of an exhaust end assembly of the static scroll body (31), and a second end of the pressure distribution cover (32) being sealingly connected to an outer periphery of the air vent (21) of the sound insulation cover (2); the pressure distribution cover (32) is used to communicate the exhaust end assembly of the static scroll body (31) and the air vent (21), and a flow area of the first end of the pressure distribution cover (32) is greater than a flow area of the second end of the pressure distribution cover (32).

2. The scroll compressor of claim 1, wherein A first end face of the pressure distribution cover (32) is in contact with and fixed to a top surface of the static scroll body (31), and a first sealing ring (34) is arranged between the first end of the pressure distribution cover (32) and the top surface of the static scroll body (31).

3. The scroll compressor of claim 1, wherein, The scroll compressor further comprises an elastic sealing structure (35), the elastic sealing structure (35) comprising an elastic member (351) and a second sealing ring (352), a first installation limiting ring groove (321) being arranged on an outer periphery of a communication position of the pressure distribution cover (32) and the sound insulation cover (2), one end of the elastic member (351) being fixedly arranged in the first installation limiting ring groove (321), and the other end of the elastic member (351) being fixedly connected with the second sealing ring (352).

4. The scroll compressor according to any one of claims 1 to 3, wherein The static scroll body (31) is fixedly arranged in the shell (1); or, the static scroll body (31) is floatingly arranged in the shell (1).

5. The scroll compressor of claim 4, wherein, The scroll compressor further comprises a support structure (4), at least one of the pressure distribution cover (32) and the sound insulation cover (2) being fixedly provided with the support structure (4), the support structure (4) being located at an outer periphery of a sealing connection position of the pressure distribution cover (32) and the sound insulation cover (2); and the static scroll structure (3) is capable of supporting the sound insulation cover (2) through the support structure (4).

6. The scroll compressor according to claim 5, characterized in that: the support structure (4) comprises a first support portion (41), one end of the first support portion (41) being fixedly connected with one of the pressure distribution cover (32) and the sound insulation cover (2), and the other end of the first support portion (41) being spaced apart from the other one of the pressure distribution cover (32) and the sound insulation cover (2) and forming a sound insulation cover deformation gap when the static scroll structure (3) is in a non-compression working state; or, The support structure (4) comprises a first support part (41) and a second support part (42), the second support part (42) is spaced apart from the outer periphery of the first support part (41); one end of the first support part (41) is fixedly connected with one of the pressure distribution cover (32) and the sound cover (2), when the static scroll structure (3) is in a non-compression working state, the other end of the first support part (41) is spaced apart from the other one of the pressure distribution cover (32) and the sound cover (2) and forms a sound cover deformation gap; one end of the second support part (42) is fixedly connected with one of the sound cover (2) and the pressure distribution cover (32), when the static scroll structure (3) is in a non-compression working state, the other end of the second support part (42) is spaced apart from the other one of the sound cover (2) and the pressure distribution cover (32) and forms a sound cover deformation gap.

7. The scroll compressor of claim 6, wherein The support structure (4) comprises the first support part (41) and the second support part (42), and a support area of the second support part (42) is greater than a support area of the first support part (41).

8. The scroll compressor of claim 6, wherein, The support structure (4) comprises the first support part (41) and the second support part (42). The first support part (41) is provided with a buffer member for buffering the force transmitted by the sound cover (2) to the first support part (41); and / or the second support part (42) is provided with a buffer member for buffering the force transmitted by the sound cover (2) to the second support part (42).

9. The scroll compressor of claim 6, wherein, The second end of the pressure distribution cover (32) is provided with a limiting protrusion (322) at the outer periphery of the communication between the pressure distribution cover (32) and the sound cover (2), and a second installation limiting ring groove (3221) is formed between the first support part (41) and the limiting protrusion (322). The scroll compressor further comprises a third sealing ring, which is arranged in the second installation limiting ring groove (3221), and is used for sealing the gap between the pressure distribution cover (32) and the sound cover (2).

10. The scroll compressor of claim 6, wherein, The support structure (4) comprises the first support part (41) and the second support part (42), when the static scroll structure (3) is in a non-compression working state, the corresponding sound cover deformation gap of the first support part (41) is greater than zero and less than or equal to 1mm, and the corresponding sound cover deformation gap of the second support part (42) is greater than or equal to 0.5mm and less than or equal to 2mm.

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