Scroll compressor

Abstract

The scroll compressor comprises an oil cavity, a driving assembly, a compression assembly and a machine shell, and the oil cavity, the compression assembly and the driving assembly are sequentially arranged in the machine shell; the compression assembly is arranged between the oil cavity and the driving assembly and comprises a movable scroll plate, a first scroll tooth and a second scroll plate; the static scroll plate is provided with a second scroll wrap, and the second scroll wrap is meshed with the first scroll wrap; at least part of the movable scroll plate is arranged on the rack, and the static scroll plate is located on the side, away from the rack, of the movable scroll plate; the crankshaft is sequentially arranged on the rack, the movable scroll plate, the static scroll plate and the driving assembly in a penetrating mode and connected with the driving assembly, and the driving assembly is used for driving the crankshaft to rotate so that the crankshaft can drive the movable scroll plate to rotate. The scroll compressor solves the problems that in the prior art, a movable scroll plate of a scroll compressor is prone to overturning, and consequently the noise and the vibration amplitude of the compressor are high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a scroll compressor. BACKGROUND

[0002] The compressor is a core component of heat exchange equipment such as air conditioners and refrigerators, and is mainly divided into piston type, rotor type and scroll type. The scroll compressor mainly consists of a motor, a crankshaft, a dynamic scroll plate, a static scroll plate, a cross slip ring and a main and auxiliary rack. The conventional scroll compressor is mainly of an upper pump body type, and the main and auxiliary rack is of a double support type. The dynamic scroll plate base plate is provided with a scroll tooth portion on one side and a bearing portion on the other side. The crankshaft eccentric portion is installed in the bearing portion, and the operation of the crankshaft eccentric portion drives the dynamic scroll plate to operate and mesh with the static scroll plate to complete a series of processes such as air suction, compression and air discharge.

[0003] The conventional compressor has the problem that the eccentric portion and the scroll tooth meshing portion are not in the same plane, and the dynamic scroll plate will tilt during operation, resulting in high noise and vibration of the compressor and increasing the power consumption of the compressor. SUMMARY

[0004] The main purpose of the present application is to provide a scroll compressor to solve the problem that the dynamic scroll plate of the scroll compressor in the prior art is prone to tilting, resulting in high noise and vibration amplitude of the compressor.

[0005] According to one aspect of the present application, a scroll compressor is provided, comprising an oil cavity, a driving assembly, a compression assembly and a shell, the oil cavity, the compression assembly and the driving assembly being sequentially arranged in the shell; the compression assembly is arranged between the oil cavity and the driving assembly, and the compression assembly comprises: a dynamic scroll plate, the dynamic scroll plate being provided with first scroll teeth; a static scroll plate, the static scroll plate being provided with second scroll teeth, the second scroll teeth being meshed with the first scroll teeth; a rack, at least part of the dynamic scroll plate being arranged on the rack, the static scroll plate being located on the side of the dynamic scroll plate away from the rack; a crankshaft, the crankshaft being sequentially arranged on the rack, the dynamic scroll plate, the static scroll plate and the driving assembly, and being connected with the driving assembly, the driving assembly being used to drive the rotation of the crankshaft, so that the crankshaft drives the rotation of the dynamic scroll plate.

[0006] Further, a first pressure space and a second pressure space are arranged between the rack and the dynamic scroll plate; in the direction from the shaft center of the dynamic scroll plate to the circumferential end face of the dynamic scroll plate, the second pressure space and the first pressure space are sequentially and spaced apart.

[0007] Further, a sealing groove is arranged on the rack, and the compression assembly further comprises: a sealing member, at least part of the sealing member being arranged in the sealing groove, and the sealing member being located between the first pressure space and the second pressure space.

[0008] Further, the rack is provided with a first installation slot, at least part of the orbiting scroll is arranged in the first installation slot, the sealing groove is arranged on the groove bottom surface of the first installation slot, and the sealing part is attached to the bottom surface of the orbiting scroll; wherein the sealing part is annular structure, the sealing part comprises an inner wall surface and an outer wall surface arranged opposite in the radial direction, at least part of the first pressure space is located between the outer wall surface, the groove bottom surface and the bottom surface of the orbiting scroll; at least part of the second pressure space is located between the inner wall surface, the groove bottom surface, the crankshaft and the bottom surface of the orbiting scroll; the pressure of the first pressure space is P1, the pressure of the second pressure space is P2, and P1

[0009] Further, the first scroll tooth and the second scroll tooth are provided with a compression cavity; the stationary scroll 2 or the orbiting scroll is provided with a communication channel, two ends of the communication channel are communicated with the compression cavity and the first pressure space respectively, and the gas in the compression cavity flows into the first pressure space through the communication channel.

[0010] Further, the rack is provided with a first through hole, at least part of the crankshaft is arranged in the first through hole; wherein the flow-through gap is arranged between the crankshaft and the hole wall surface of the first through hole, the flow-through gap is communicated with the second pressure space, and the gas in the cavity of the casing flows into the second pressure space through the flow-through gap.

[0011] Further, the orbiting scroll comprises: a first base disc arranged in the first installation slot, the first base disc comprises a first installation surface and a second installation surface arranged opposite, and the first scroll tooth is arranged on the first installation surface.

[0012] Further, the second installation surface is provided with a first limiting groove, and the groove bottom surface is provided with a second limiting groove; the compression assembly further comprises: a limiting part, the limiting part is annular structure, the limiting part is provided with a first limiting protrusion and a second limiting protrusion, the first limiting protrusion is arranged in the first limiting groove, and the second limiting protrusion is arranged in the second limiting groove, so as to limit the orbiting scroll through mutual stop between the second limiting protrusion and the groove wall surface of the first limiting groove in the process of rotation of the orbiting scroll.

[0013] Further, the first scroll tooth and the second scroll tooth are provided with a compression cavity; the compression assembly further comprises: an exhaust channel arranged on the stationary scroll, and the exhaust channel is communicated with the compression cavity.

[0014] Further, the exhaust channel extends along the axis direction of the stationary scroll, and the compression assembly further comprises: a sound-absorbing part which is arranged above the stationary scroll and is provided with a sound-absorbing cavity between the sound-absorbing part and the stationary scroll; the sound-absorbing cavity is communicated with the exhaust channel.

[0015] Further, the static vortex disc is provided with a protruding part extending away from the dynamic vortex disc, the protruding part is provided with a second through hole, and at least part of the crankshaft is arranged in the second through hole; wherein at least part of the protruding part is arranged on the sound-damping part, and an exhaust gap is arranged between the protruding part and the sound-damping part, and the sound-damping cavity is communicated with the exhaust gap.

[0016] Further, the sound-damping part further comprises a cover body arranged on the static vortex disc and connected with the static vortex disc, and an end of the cover body away from the static vortex disc is provided with a matching hole, and at least part of the protruding part is arranged in the matching hole; wherein the matching hole extends away from the static vortex disc, and the exhaust gap is arranged between the hole wall surface of the matching hole and the matching surface of the protruding part.

[0017] Further, the static vortex disc comprises a second base disc, the second base disc comprises oppositely arranged third and fourth mounting surfaces, the second vortex tooth is arranged on the third mounting surface, and the protruding part is arranged on the fourth mounting surface; the sound-damping part is arranged on the second base disc and connected with the second base disc, and the exhaust passage is arranged in the second base disc.

[0018] Further, the sound-damping part further comprises a cover body arranged on the static vortex disc and connected with the static vortex disc, and an end of the cover body away from the static vortex disc is provided with a matching hole, and at least part of the protruding part is arranged in the matching hole; wherein the matching hole extends away from the static vortex disc, and the exhaust gap is arranged between the hole wall surface of the matching hole and the matching surface of the protruding part.

[0019] Further, the circumferential side surface of the static vortex disc is provided with a first backflow opening, the first backflow opening and the inner wall surface of the shell form an oil return passage, and the oil return passage is communicated with the oil cavity.

[0020] Compared with the prior art, the technical scheme of the present application at least has the following technical effects:

[0021] The scroll compressor of the present application sets the compression assembly between the oil cavity and the driving assembly, at least part of the dynamic vortex disc is arranged on the rack, the static vortex disc is arranged on the side of the dynamic vortex disc away from the rack and engaged with the dynamic vortex disc, so that the crankshaft can sequentially penetrate the rack, the dynamic vortex disc, the static vortex disc and the driving assembly, and the eccentric part of the crankshaft can be kept in the same plane with the dynamic vortex disc, so that the compressor runs more stably during the process of the crankshaft driving the dynamic vortex disc to rotate, the noise and vibration are small, and the problem of noise caused by the overturning of the dynamic vortex disc is avoided, and the power consumption of the compressor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0023] Figure 1 It is a sectional view of the structure of the scroll compressor disclosed in the present application.

[0024] Figure 2 An exploded view of the structure of the scroll compressor disclosed in the present application;

[0025] Figure 3 An assembly sectional view of the orbiting scroll and the fixed scroll in the scroll compressor disclosed in the present application;

[0026] Figure 4 An enlarged view of part A in the figure; Figure 3

[0027] An enlarged view of part B in the figure; Figure 5 Figure 3 An enlarged view of part B in the figure;

[0028] Figure 6 A schematic view of the structure of the frame in the scroll compressor disclosed in the present application.

[0029] In the above figures, the following reference signs are used:

[0030] 100, oil cavity; 200, drive assembly; 300, compression assembly;

[0031] 1, orbiting scroll; 10, first scroll tooth; 11, first pressure space; 13, first limiting groove; 12, second pressure space; 15, first base plate; 151, first mounting surface; 152, second mounting surface;

[0032] 2, fixed scroll; 20, second scroll tooth; 21, exhaust passage; 22, protrusion; 220, mating surface; 221, second through hole; 23, second base plate; 231, third mounting surface; 232, fourth mounting surface; 24, first backflow opening;

[0033] 3, frame; 30, first mounting slot; 301, slot bottom surface; 31, first through hole; 310, flow passage gap; 302, sealing groove; 32, second limiting groove; 33, second backflow opening;

[0034] 4, crankshaft; 7, compression cavity; 8, sound-damping component; 80, sound-damping cavity; 81, exhaust gap; 82, cover body; 83, mating hole; 830, hole wall surface;

[0035] 5, sealing component; 6, limiting component; 61, first limiting protrusion; 62, second limiting protrusion; 9, casing. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] ​It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0038] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not meant to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the use of the terms "including", "comprising", or "having" in the detailed description or the claims means "including by way of reference to the content of the following clauses". Meanwhile, it should be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for the purpose of convenience in description. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion of an item is not necessary in subsequent drawings once the item has been defined in one drawing.

[0039] As mentioned in the background, in the existing scroll compressor, the end of the crankshaft is connected with the orbiting scroll, so that the eccentric part of the crankshaft is not in the same plane as the orbiting scroll. During the rotation of the orbiting scroll driven by the crankshaft, the orbiting scroll may be tilted, and friction may occur between the orbiting scroll and the fixed scroll, thereby increasing the noise and vibration amplitude of the compressor. Therefore, in order to solve the above technical problems, the present application provides a scroll compressor, an oil cavity 100, a compression assembly 300 and a driving assembly 200 are sequentially arranged in a casing 9, the compression assembly 300 is arranged between the oil cavity 100 and the driving assembly 200, the compression assembly 300 comprises an orbiting scroll 1, a fixed scroll 2, a frame 3 and a crankshaft 4, at least part of the orbiting scroll 1 is arranged on the frame 3, the fixed scroll 2 is arranged on the side of the orbiting scroll 1 away from the frame 3, and the crankshaft 4 is sequentially arranged on the frame 3, the orbiting scroll 1, the fixed scroll 2 and the driving assembly 200, and is connected with the orbiting scroll 1 and the driving assembly 200. In this way, the crankshaft 4 can pass through the orbiting scroll 1 and be connected with the orbiting scroll 1, so that the eccentric part of the crankshaft 4 is in the same plane as the orbiting scroll 1, avoiding the tilting of the orbiting scroll 1 during rotation, and the compressor runs more smoothly with less noise and vibration.

[0040] Referring to Figures 1 to 6As shown, the application provides a scroll compressor, comprising an oil cavity 100, a driving assembly 200, a compression assembly 300 and a casing 9, the oil cavity 100, the compression assembly 300 and the driving assembly 200 are sequentially arranged in the casing 9; the compression assembly 300 is arranged between the oil cavity 100 and the driving assembly 200, the compression assembly 300 comprises: a moving scroll 1, the moving scroll 1 is provided with first scroll teeth 10; a stationary scroll 2, the stationary scroll 2 is provided with second scroll teeth 20, the second scroll teeth 20 are engaged with the first scroll teeth 10; a frame 3, at least part of the moving scroll 1 is arranged on the frame 3, the stationary scroll 2 is located on the side of the moving scroll 1 away from the frame 3; a crankshaft 4, the crankshaft 4 is sequentially arranged on the frame 3, the moving scroll 1, the stationary scroll 2 and the driving assembly 200, and is connected with the moving scroll 1 and the driving assembly 200, the driving assembly is used for driving the crankshaft 4 to rotate, so that the crankshaft 4 drives the moving scroll 1 to rotate.

[0041] According to the scroll compressor provided by the application, comprising an oil cavity 100, a driving assembly 200, a compression assembly 300 and a casing 9, the oil cavity 100, the compression assembly 300 and the driving assembly 200 are sequentially arranged in the casing 9; the compression assembly 300 is arranged between the oil cavity 100 and the driving assembly 200, wherein the compression assembly 300 comprises: a moving scroll 1, a stationary scroll 2, a frame 3 and a crankshaft 4, at least part of the moving scroll 1 is arranged on the frame 3, the stationary scroll 2 is located on the side of the moving scroll 1 away from the frame 3, the crankshaft 4 is sequentially arranged on the frame 3, the moving scroll 1, the stationary scroll 2 and the driving assembly 200, and is connected with the moving scroll 1 and the driving assembly 200; the crankshaft 4 is driven to rotate by the driving assembly 200, the crankshaft 4 drives the moving scroll 1 to rotate, so that the first scroll teeth 10 and the second scroll teeth 20 are used for compressing refrigerant or gas, and one end of the crankshaft 4 away from the driving assembly 200 extends into the oil cavity 100. In the application, by arranging the compression assembly 300 between the oil cavity 100 and the driving assembly 200, the crankshaft 4 can penetrate the moving scroll 1 and the stationary scroll 2, so that in the process of driving the moving scroll 1 to rotate by the crankshaft 4, the problem of noise caused by the overturning of the moving scroll 1 is avoided.

[0042] Specifically, the first pressure space 11 and the second pressure space 12 are arranged between the frame 3 and the orbiting scroll 1, and the second pressure space 12 is sequentially arranged with the first pressure space 11 from the direction of the axis of the orbiting scroll 1 to the circumferential end surface of the orbiting scroll 1. The first pressure space 11 and the second pressure space 12 are used to provide pressure to the orbiting scroll 1 in the direction of the fixed scroll 2, so that the orbiting scroll 1 is balanced in force, the sealing between the orbiting scroll 1 and the fixed scroll 2 is ensured, and in the process of rotation of the orbiting scroll 1, the problem that the pressure in the compression chamber 7 pushes the orbiting scroll 1 to move in the direction of the frame 3, so that friction occurs between the orbiting scroll 1 and the groove bottom surface 301, noise is generated or the orbiting scroll 1 is abraded is avoided. The first pressure space 11 and the second pressure space 12 jointly support the orbiting scroll 1.

[0043] Further, the frame 3 is provided with a sealing groove 302, and the compression assembly further comprises a sealing component 5, at least a part of the sealing component 5 is arranged in the sealing groove 302, and the sealing component 5 is located between the first pressure space 11 and the second pressure space 12. The first pressure space 11 and the second pressure space 12 are isolated by the sealing component 5, so as to avoid the gas flow between the first pressure space 11 and the second pressure space 12.

[0044] In the present application, the frame 3 is provided with a first mounting groove 30, at least a part of the orbiting scroll 1 is arranged in the first mounting groove 30, the sealing groove 302 is arranged on the groove bottom surface 301 of the first mounting groove 30, and the sealing component 5 is attached to the bottom surface of the orbiting scroll 1. The sealing component 5 is annular in structure, and comprises an inner wall surface and an outer wall surface which are oppositely arranged in the radial direction. At least a part of the first pressure space 11 is located between the outer wall surface, the groove bottom surface 301 and the bottom surface of the orbiting scroll 1. At least a part of the second pressure space 12 is located between the inner wall surface, the groove bottom surface 301, the crankshaft 4 and the bottom surface of the orbiting scroll 1. The pressure of the first pressure space 11 is P1, the pressure of the second pressure space 12 is P2, and P1

[0045] In the implementation process, the compression cavity 7 is arranged between the first scroll tooth 10 and the second scroll tooth 20; the static scroll disc 2 or the dynamic scroll disc 1 is provided with a communication passage, two ends of the communication passage are communicated with the compression cavity 7 and the first pressure space 11 respectively, and the gas in the compression cavity 7 flows into the first pressure space 11 through the communication passage. In the meshing process of the first scroll tooth 10 and the second scroll tooth 20, the gas in the compression cavity 7 that has not been completely compressed flows into the first pressure space 11 through the communication passage, so that the pressure P1 in the first pressure space 11 is greater than the suction pressure of the compressor and smaller than the exhaust pressure of the compressor.

[0046] The first through hole 31 is arranged on the frame 3, and at least part of the crankshaft 4 is arranged in the first through hole 31; a flow gap 310 is arranged between the crankshaft 4 and the hole wall surface of the first through hole 31, the flow gap 310 is communicated with the second pressure space 12, and the gas in the cavity of the casing 9 flows into the second pressure space 12 through the flow gap 310. The pressure in the cavity of the casing 9 is the compressed gas in the compression cavity 7, that is, the exhaust pressure of the compressor, and after the gas in the casing 9 flows into the second pressure space 12 through the flow gap 310, the second pressure space 12 provides a supporting force for the dynamic scroll disc 1.

[0047] In order to avoid the self-rotation of the dynamic scroll disc 1 in the process of driving the dynamic scroll disc 1 to rotate, the dynamic scroll disc 1 comprises: a first base disc 15 arranged in the first mounting groove 30, the first base disc 15 comprises oppositely arranged first and second mounting surfaces 151 and 152, and the first scroll tooth 10 is arranged on the first mounting surface 151. The first limiting groove 13 is arranged on the second mounting surface 152, and at least part of the first pressure space 11 is located between the outer wall surface of the sealing component 5, the first limiting groove 13 and the groove bottom surface 301 of the first mounting groove 30. The second limiting groove 32 is arranged on the groove bottom surface 301; the compression assembly 300 further comprises: a limiting component 6 in a ring structure, the limiting component 6 is provided with a first limiting protrusion 61 and a second limiting protrusion 62, the first limiting protrusion 61 is arranged in the first limiting groove 13, and the second limiting protrusion 62 is arranged in the second limiting groove 32, so as to limit the dynamic scroll disc 1 in the process of rotating the dynamic scroll disc 1 by mutual stopping between the second limiting protrusion 62 and the groove wall surface of the first limiting groove 13. Preferably, in one embodiment provided in the present application, the limiting component 6 is a cross slide ring, and in another embodiment provided in the present application, the limiting component 6 is a spherical coupling or a cylindrical pin coupling. The self-rotation of the dynamic scroll disc 1 is limited by using the cross slide ring, the spherical coupling or the cylindrical pin coupling.

[0048] In the embodiments provided in the application, the compression cavity 7 is arranged between the first scroll tooth 10 and the second scroll tooth 20; the compression assembly 300 further comprises an exhaust passage 21 arranged on the static scroll plate 2, and the exhaust passage 21 communicates with the compression cavity 7. Since the static scroll plate 2 of the application is away from the oil cavity 100 relative to the dynamic scroll plate 1, the gas flow path in the compression cavity 7 is simpler, and the gas can be directly discharged along the extension direction of the exhaust passage 21, without being interfered by the position of the oil cavity 100, thereby reducing the manufacturing cost. The dynamic scroll plate 1 can be close to the oil cavity 100, the oil liquid depth of the crankshaft 4 extending into the oil cavity 100 can be flexibly adjusted according to actual needs, the oil liquid can flow into the lubrication part more quickly, the compressor startup oiling time is shortened, and since the static scroll plate 2 is away from the oil cavity 100, the interference relationship between the oil cavity 100 and the exhaust passage 21 does not need to be considered when the exhaust passage 21 is designed, so that the design of the exhaust passage 21 can be simpler, thereby reducing the manufacturing cost of the scroll compressor.

[0049] Further, the static scroll plate 2 is further provided with a plurality of pressure relief passages arranged on the static scroll plate 2 at intervals, for relieving pressure in the compression cavity 7. The exhaust passage 21 is provided with a first control valve for controlling the on-off of the exhaust passage 21, and the pressure relief passage is provided with a second control valve for controlling the on-off of the pressure relief passage.

[0050] Specifically, the exhaust passage 21 extends along the axis direction of the static scroll plate 2, and the compression assembly 300 further comprises a sound-absorbing component 8 covering the static scroll plate 2 from above, and a sound-absorbing cavity 80 is arranged between the sound-absorbing component 8 and the static scroll plate 2; the sound-absorbing cavity 80 communicates with the exhaust passage 21. The exhaust passage 21 extends along the axis direction of the static scroll plate 2, which can shorten the gas discharge path, and at the same time, the sound-absorbing component 8 is used to reduce the noise of gas discharge. Preferably, the sound-absorbing cavity 80 is provided with sound-absorbing materials such as soundproof cotton or sound-absorbing plates.

[0051] In one embodiment provided in the application, the static scroll plate 2 is provided with a protruding portion 22 extending in a direction away from the dynamic scroll plate 1, and the protruding portion 22 is provided with a second through hole 221, and at least part of the crankshaft 4 is arranged in the second through hole 221; wherein at least part of the protruding portion 22 is arranged on the sound-absorbing component 8, and an exhaust gap 81 is arranged between the protruding portion 22 and the sound-absorbing component 8, and the sound-absorbing cavity 80 communicates with the exhaust gap 81. The gas that has been sound-absorbed by the sound-absorbing cavity 80 is discharged through the exhaust gap 81, and the gap between the sound-absorbing component 8 and the protruding portion 22 is used as the exhaust gap 81 of the gas, which cooperates with the exhaust passage 21 to simplify the gas discharge structure.

[0052] Further, the sound attenuation component 8 further comprises a cover 82, the cover 82 is covered on the static scroll 2 and connected with the static scroll 2, an end of the cover 82 away from the static scroll 2 is provided with a matching hole 83, at least part of the protruding portion 22 is arranged in the matching hole 83; wherein the matching hole 83 extends from the cover 82 towards the direction away from the static scroll 2, and the exhaust gap 81 is arranged between the hole wall surface 830 of the matching hole 83 and the matching surface 220 of the protruding portion 22. The structure is simple and easy to implement by limiting the size between the hole diameter of the matching hole 83 and the outer diameter of the protruding portion 22, and the exhaust gap 81 is formed between the hole wall surface 830 and the matching surface 220 after the cover 82 and the protruding portion 22 are assembled, and it is not necessary to design a separate gas exhaust channel, and since the exhaust port of the compressor is arranged at the top of the shell 9, the gas in the compression chamber 7 can be exhausted by the exhaust port after passing through the exhaust channel 21, the sound attenuation cavity 80 and the exhaust gap 81 along the length direction of the shell 9, and the exhaust path of the gas is basically consistent with the extension direction of the shell 9, thereby shortening the exhaust stroke of the gas and accelerating the working efficiency of the compressor.

[0053] The static scroll 2 comprises a second base plate 23, the second base plate 23 comprises oppositely arranged third and fourth mounting surfaces 231 and 232, the second scroll tooth 20 is arranged on the third mounting surface 231, the protruding portion 22 is arranged on the fourth mounting surface 232, the sound attenuation component 8 is covered on the second base plate 23 and connected with the second base plate 23, and the exhaust channel 21 is arranged in the second base plate 23. By arranging the exhaust channel 21 in the second base plate 23, the exhaust channel 21 can be directly communicated with the compression chamber 7, and the compressed gas can be directly exhausted along the exhaust channel 21, which not only has a simple structure, but also shortens the exhaust path of the gas.

[0054] In another embodiment provided in the present application, the sound attenuation component 8 further comprises a cover 82, the cover 82 is covered on the static scroll 2 and connected with the static scroll 2, and the cover 82 is provided with an air outlet hole, the air outlet hole is communicated with the sound attenuation cavity 80. In the embodiment, the cover 82 is sleeved on the protruding portion 22, and the matching surface 220 of the protruding portion 22 is sealed, and the gas in the sound attenuation cavity 80 is exhausted through the air outlet hole.

[0055] In the process of specific implementation, the circumferential side surface of the static scroll 2 is provided with a first backflow opening 24, the first backflow opening 24 and the inner wall surface of the shell 9 form an oil return passage therebetween, and the oil return passage is communicated with the oil cavity 100. Preferably, the circumferential side surface of the frame 3 is provided with a second backflow opening 33, the second backflow opening 33 is communicated with the first backflow opening 24, at least part of the oil return passage is located between the first backflow opening 24, the second backflow opening 33 and the inner wall surface of the shell 9, and the lubricating oil separated by the static scroll 2 can flow back to the oil cavity 100 through the second backflow opening 33 and the first backflow opening 24 along the inner wall surface of the shell 9.

[0056] During actual operation, the drive component 200 is preferably a drive motor, which drives the crankshaft 4 to rotate, and the crankshaft 4 drives the movable scroll 1 to rotate. During the rotation, the first scroll teeth 10 and the second scroll teeth 20 are used to compress the gas sucked into the compressor. At the same time, an oil supply channel is provided in the crankshaft 4, and the lubricating oil in the oil chamber 100 flows to various parts to be lubricated through the oil supply channel; the compressed gas passes through the exhaust channel 21 and the exhaust gap 81, and is finally discharged through the exhaust port on the casing 9. The entire exhaust path avoids backflow bending, and the gas in the compression chamber 7 can be directly discharged along the axial direction of the casing 9.

[0057] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0058] The scroll compressor provided by the present application includes an oil chamber 100, a drive assembly 200, a compression assembly 300, and a casing 9. The oil chamber 100, the compression assembly 300, and the drive assembly 200 are sequentially arranged within the casing 9. The compression assembly 300 includes an orbiting scroll 1, a fixed scroll 2, a frame 3, and a crankshaft 4. At least a portion of the orbiting scroll 1 is arranged on the frame 3, and the fixed scroll 2 is located on the side of the orbiting scroll 1 away from the frame 3. The crankshaft 4 is sequentially arranged through the frame 3, the orbiting scroll 1, the fixed scroll 2, and the drive assembly 200, and is connected to the orbiting scroll 1 and the drive assembly 200. The drive assembly 200 drives the crankshaft 4 to rotate, which in turn drives the orbiting scroll 1 to rotate, thereby compressing air using the first scroll 10 and the second scroll 20. In the present application, the compression assembly 300 is arranged between the oil chamber 100 and the drive assembly 200, so that the crankshaft 4 can pass through the orbiting scroll 1 and the fixed scroll 2, thereby avoiding the problem of the orbiting scroll 1 overturning and causing noise during the process of the crankshaft 4 driving the orbiting scroll 1 to rotate.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of the terms "first", "second", etc. to qualify parts is only intended to facilitate the distinction of the corresponding parts, and in the absence of a further declaration, the above terms do not have a special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0061] The above only is the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A scroll compressor comprising an oil cavity (100), a drive assembly (200), a compression assembly (300) and a casing (9), the oil cavity (100), the compression assembly (300) and the drive assembly (200) being arranged in sequence within the casing (9); the compression assembly (300) being arranged between the oil cavity (100) and the drive assembly (200), characterized in that, The compression assembly (300) comprises: A moving scroll (1) provided with first scroll teeth (10); A stationary scroll (2) provided with second scroll teeth (20) engaged with the first scroll teeth (10); A frame (3) on which at least part of the moving scroll (1) is arranged, and the stationary scroll (2) is located on the side of the moving scroll (1) away from the frame (3); A crankshaft (4) sequentially penetrating through the frame (3), the moving scroll (1), the stationary scroll (2) and the driving assembly (200), and connected with the driving assembly (200) for driving the rotation of the crankshaft (4) to drive the rotation of the moving scroll (1).

2. The scroll compressor of claim 1, wherein The frame (3) and the moving scroll (1) are provided with a first pressure space (11) and a second pressure space (12); from the center of the moving scroll (1) to the circumferential end surface of the moving scroll (1), the second pressure space (12) and the first pressure space (11) are sequentially and separately arranged.

3. The scroll compressor of claim 2, wherein, The frame (3) is provided with a sealing groove (302), and the compression assembly further comprises: A sealing component (5) arranged at least partially in the sealing groove (302), and located between the first pressure space (11) and the second pressure space (12).

4. The scroll compressor of claim 3, wherein The frame (3) is provided with a first mounting groove (30), and at least part of the moving scroll (1) is arranged in the first mounting groove (30), the sealing groove (302) is arranged on the groove bottom surface (301) of the first mounting groove (30), and the sealing component (5) is attached to the bottom surface of the moving scroll (1); The sealing component (5) is annular, comprising an inner wall surface and an outer wall surface arranged oppositely in the radial direction, at least part of the first pressure space (11) is located between the outer wall surface, the groove bottom surface (301) and the bottom surface of the moving scroll (1), and at least part of the second pressure space (12) is located between the inner wall surface, the groove bottom surface (301), the crankshaft (4) and the bottom surface of the moving scroll (1); The pressure of the first pressure space (11) is P1, and the pressure of the second pressure space (12) is P2, P1 < P2.

5. The scroll compressor of claim 2, wherein, The first scroll teeth (10) and the second scroll teeth (20) are provided with a compression chamber (7); The stationary scroll (2) or the moving scroll (1) is provided with a communication channel, two ends of the communication channel are respectively communicated with the compression chamber (7) and the first pressure space (11), and the gas in the compression chamber (7) flows into the first pressure space (11) through the communication channel.

6. The scroll compressor of claim 2, wherein, The machine frame (3) is provided with a first through hole (31), and at least part of the crankshaft (4) is arranged in the first through hole (31); The crankshaft (4) and the hole wall surface of the first through hole (31) are provided with a flow gap (310), the flow gap (310) is communicated with the second pressure space (12), and the gas in the cavity of the machine shell (9) flows into the second pressure space (12) through the flow gap (310).

7. The scroll compressor of claim 4, wherein The orbiting scroll plate (1) comprises: A first base plate (15) is arranged in the first mounting groove (30), the first base plate (15) comprises oppositely arranged first and second mounting surfaces (151) and (152), and the first scroll tooth (10) is arranged on the first mounting surface (151).

8. The scroll compressor of claim 7, wherein, The second mounting surface (152) is provided with a first limiting groove (13), and the groove bottom surface (301) is provided with a second limiting groove (32); the compression assembly (300) further comprises: A limiting component (6) is in a ring structure, the limiting component (6) is provided with a first limiting protrusion (61) and a second limiting protrusion (62), the first limiting protrusion (61) is arranged in the first limiting groove (13), and the second limiting protrusion (62) is arranged in the second limiting groove (32), so that the orbiting scroll plate (1) is limited by mutual stopping between the second limiting protrusion (62) and the groove wall surface of the first limiting groove (13) during rotation of the orbiting scroll plate (1).

9. The scroll compressor of claim 1, wherein, The first scroll tooth (10) and the second scroll tooth (20) are provided with a compression cavity (7); the compression assembly (300) further comprises: An exhaust passage (21) is arranged on the fixed scroll plate (2), and the exhaust passage (21) is communicated with the compression cavity (7).

10. The scroll compressor of claim 9, wherein, The exhaust passage (21) extends along the axial direction of the fixed scroll plate (2), and the compression assembly (300) further comprises: A sound attenuation component (8) is arranged above the fixed scroll plate (2), and a sound attenuation cavity (80) is arranged between the sound attenuation component (8) and the fixed scroll plate (2); The sound attenuation cavity (80) is communicated with the exhaust passage (21).

11. The scroll compressor of claim 10, wherein, The fixed scroll plate (2) is provided with a protruding portion (22) extending away from the orbiting scroll plate (1), and a second through hole (221) is arranged in the protruding portion (22), and at least part of the crankshaft (4) is arranged in the second through hole (221); At least part of the protruding portion (22) is arranged on the sound attenuation component (8), and an exhaust gap (81) is arranged between the protruding portion (22) and the sound attenuation component (8), and the sound attenuation cavity (80) is communicated with the exhaust gap (81).

12. The scroll compressor of claim 11, wherein, The sound attenuation component (8) further comprises: A cover body (82) is covered on the static scroll disc (2) and connected with the static scroll disc (2), and an accommodation hole (83) is arranged at an end of the cover body (82) away from the static scroll disc (2), and at least part of the protruding part (22) is arranged in the accommodation hole (83); The accommodation hole (83) is extended from the cover body (82) in a direction away from the static scroll disc (2), and the exhaust gap (81) is arranged between a hole wall surface (830) of the accommodation hole (83) and a matching surface (220) of the protruding part (22).

13. The scroll compressor of claim 11, wherein, The static scroll disc (2) comprises: A second base disc (23) comprises oppositely arranged third and fourth mounting surfaces (231, 232), the second scroll tooth (20) is arranged on the third mounting surface (231), the protruding part (22) is arranged on the fourth mounting surface (232), the sound attenuation component (8) is covered on the second base disc (23) and connected with the second base disc (23), and the exhaust passage (21) is arranged in the second base disc (23).

14. The scroll compressor of claim 10, wherein, The sound attenuation component (8) further comprises: A cover body (82) is covered on the static scroll disc (2) and connected with the static scroll disc (2), and an air outlet hole is arranged on the cover body (82) and communicates with the sound attenuation cavity (80).

15. The scroll compressor according to claim 1, wherein A first backflow opening (24) is arranged on a circumferential side surface of the static scroll disc (2), an oil return passage is formed between the first backflow opening (24) and an inner wall surface of the casing (9), and the oil return passage communicates with the oil cavity (100).

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