compressor

Abstract

The compressor provided in the application comprises a moving scroll part, a supporting part and a sealing assembly, the sealing assembly is at least partially located between the moving scroll part and the supporting part, the sealing assembly comprises a first sealing part, a second sealing part and a plate, the plate is located between the moving scroll part and the supporting part, the first sealing part and the second sealing part are respectively located on two sides of the plate, the first sealing part is located between the plate and the moving scroll part, and the second sealing part is located between the plate and the supporting part; the first sealing part at least comprises a wear-resistant part, the second sealing part at least comprises an elastic part, and the hardness of the wear-resistant part is greater than the hardness of the elastic part. In the application, the sealing assembly comprising the first sealing part, the second sealing part and the plate is arranged, the first sealing part located between the plate and the moving scroll part at least comprises the wear-resistant part, the second sealing part located between the plate and the supporting part at least comprises the elastic part, and through the synergistic effect of the wear-resistant part, the elastic part and the plate, the sealing property is ensured, the wear of the sealing part is reduced, and the sealing durability is improved.

Description

Technical Field

[0001] This application belongs to the field of compressors, and specifically relates to a scroll compressor. Background Technology

[0002] The compressor is a crucial component of a vapor compression refrigeration system, its function being to compress low-pressure, low-temperature refrigerant gas into high-pressure, high-temperature refrigerant gas. The scroll compressor is a type of compressor widely used due to its energy-saving and environmentally friendly advantages.

[0003] During the refrigerant compression process, a scroll compressor generates pressure in the compression chamber, which produces axial force that causes the moving and stationary scroll components to separate, creating a gap and leading to leakage of the compressed medium. Related technologies use an intermediate plate between the moving scroll component and the support component, with seals on both sides of the intermediate plate to achieve back pressure sealing. However, during refrigerant compression, the moving scroll component is in motion, causing severe friction damage to the seals. Summary of the Invention

[0004] This application aims to provide a compressor with improved sealing durability.

[0005] To achieve the above objectives, this application provides a compressor including a moving scroll member, a support member, and a sealing assembly. The sealing assembly is at least partially located between the moving scroll member and the support member. The sealing assembly includes a first sealing portion, a second sealing portion, and a plate. The plate is located between the moving scroll member and the support member. The first sealing portion and the second sealing portion are respectively located on both sides of the plate. The first sealing portion is located between the plate and the moving scroll member, and the second sealing portion is located between the plate and the support member.

[0006] The first sealing part includes at least a wear-resistant part, and the second sealing part includes at least an elastic part, wherein the hardness of the wear-resistant part is greater than the hardness of the elastic part.

[0007] In this application, the compressor is provided with a sealing assembly including a first sealing part, a second sealing part and a plate. The first sealing part located between the plate and the moving scroll member includes at least a wear-resistant part, and the second sealing part located between the plate and the support member includes at least an elastic part. Through the synergistic effect of the wear-resistant part, the elastic part and the plate, the sealing performance is guaranteed while the wear of the sealing part is reduced, which helps to improve the sealing durability. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A perspective view of the compressor provided in an embodiment of this application;

[0010] Figure 2 An exploded view of the compressor provided in an embodiment of this application;

[0011] Figure 3 A cross-sectional view of the compressor provided in an embodiment of this application;

[0012] Figure 4 for Figure 3 Enlarged view of section A in the middle circle;

[0013] Figures 5-7 These are structural diagrams illustrating different embodiments of the sealing assembly in this application;

[0014] Figures 8-9 This application shows a structural diagram with protrusions.

[0015] Figure 10 This is a structural diagram of the first sealing part in this application, including a wear-resistant part and an elastic part;

[0016] Figure 11 This is a structural diagram showing the oil return passage provided in the embodiment of this application for the compressor. Detailed Implementation

[0017] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0018] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0019] The compressor is a crucial component of a vapor compression refrigeration system; its function is to compress low-pressure, low-temperature refrigerant gas into high-pressure, high-temperature refrigerant gas. (Please refer to...) Figures 1 to 11This embodiment proposes a compressor, including a compression mechanism, a drive mechanism, and a housing assembly. The compression mechanism includes a moving scroll member 1 and a fixed scroll member 6, which mesh with the moving scroll member 1. The moving scroll member 1 includes a first end plate 11 and a first scroll portion 12, which are connected to the first end plate 11. The fixed scroll member 6 includes a second end plate 61 and a second scroll portion 62, which are connected to the second end plate 61. The first scroll portion 12 extends from the first end plate 11 toward the second end plate 61, and the second scroll portion 62 extends from the second end plate 61 toward the first end plate 11. The compressor has a compression chamber V located between the fixed scroll member 6 and the moving scroll member 1. More specifically, the compression chamber V is located between the first end plate 11 and the second end plate 61, and at least partially located between the first scroll portion 12 and the second scroll portion 62. In other words, the first scroll portion 12 and the second scroll portion 62 mesh with each other to form a series of compression chambers V. The series of compression chambers V includes the innermost central compression chamber V1. The second end plate 61 has at least one exhaust port 61a, and the at least one exhaust port 61a can communicate with the central compression chamber V1.

[0020] Additionally, the compressor includes an exhaust cover 7 and an exhaust valve EV. The exhaust valve EV is connected to a fixed scroll member 6, and during the compression of the refrigerant, the exhaust valve EV can open or block the exhaust port 61a. The exhaust cover 7 is connected to the fixed scroll member 6, and the compressor has an exhaust chamber HP, which is in communication with the compression chamber V.

[0021] Furthermore, the outer casing assembly includes a housing 8, and the drive mechanism includes a motor 9 and a shaft 4. The motor 9 is located inside the housing 8 and includes a stator 91 and a rotor 92. The stator 91 is connected to the housing 8, and the rotor 92 is connected to the shaft 4. The shaft 4 is rotatably connected to the first end plate 11 of the moving scroll member 1. Specifically, the shaft 4 includes a main body 41 and an eccentric part 42. The eccentric part 42 is connected to the main body 41, and the rotor 92 is connected to the main body 41. The eccentric part 42 is eccentrically positioned relative to the axis of the main body 41. The compressor includes a first bearing B1, which connects the eccentric part 42 and the first end plate 11. When the compressor compresses the refrigerant, the stator 91 is energized, and the rotor 92 rotates under the action of the magnetic field, driving the shaft 4 to rotate. Since the eccentric part 42 of the shaft 4 is eccentrically positioned relative to the main body 41, the shaft 4 drives the moving scroll member 1 to perform planar motion relative to the fixed scroll member 6. Refrigerant is drawn into compression chamber V and then gradually compressed from the outermost to the innermost central compression chamber V1, increasing in pressure. When the refrigerant pressure in compression chamber V, connected to exhaust port 61a, reaches the discharge pressure of exhaust valve EV, exhaust valve EV opens, and refrigerant is discharged from compression chamber V to exhaust chamber HP. Therefore, exhaust chamber HP is at high temperature and high pressure. When the refrigerant pressure in compression chamber V, connected to exhaust port 61a, has not yet reached the discharge pressure of exhaust valve EV, exhaust valve EV seals exhaust port 61a. Exhaust cover 7 has an outlet 70. The high-temperature, high-pressure refrigerant entering exhaust chamber HP is finally discharged from the compressor through outlet 70 and enters the piping of the heat exchange system.

[0022] The compressor also includes a support member 2, located on the back side of the moving scroll member 1, i.e., the side away from the fixed scroll member 6. The fixed scroll member 6 is located on the side of the first end plate 11 away from the support member 2. In other words, the moving scroll member 1 is located between the support member 2 and the fixed scroll member 6. The support member 2 is connected to the housing 8, and at least partially located within the housing 8. The support member 2 supports the moving scroll member 1. The support member 2 can be entirely located within the housing 8, such as... Figure 3 As shown, it can also be partially located within the casing 8, but is not shown in the figure. The pressure generated by the refrigerant during compression exerts a force on the moving scroll 1 and the fixed scroll 6, causing them to separate. Once the separation distance between the moving scroll 1 and the fixed scroll 6 reaches a certain level, the seal between them will fail, leading to refrigerant leakage. This, in turn, affects the compressor's compression efficiency and even its normal operation. Therefore, a back pressure chamber C1 is provided on the back side of the moving scroll 1, i.e., the side away from the fixed scroll 6. The back pressure chamber C1 is located between the support member 2 and the moving scroll 1. By providing the back pressure chamber C1, the pressure within it can generate a reaction force on the moving scroll 1 to resist the separation of the moving scroll 1 and the fixed scroll 6, thereby ensuring the normal operation and efficient functioning of the compressor.

[0023] Please refer to it again. Figure 2 , Figure 3 Referring to the figure, to ensure the relative sealing of the back pressure chamber C1, in this embodiment, the compressor includes a sealing assembly 3 and a shaft seal 5. The sealing assembly 3 is at least partially located between the moving scroll member 1 and the support member 2, and the sealing assembly 3 seals and connects the support member 2 and the moving scroll member 1. The shaft 4 passes through the support member 2, and the shaft seal 5 is located between the shaft 4 and the support member 2, sealing and connecting the shaft 4 and the support member 2. Through the sealing assembly 3 and the shaft seal 5, the back pressure chamber C1 is located between the sealing assembly 3 and the shaft seal 5, that is, the back pressure chamber C1 is surrounded by the support member 2, the sealing assembly 3, the moving scroll member 1, the shaft 4, and the shaft seal 5.

[0024] Support 2 is fixed relative to housing 8. During compressor operation, the moving scroll 1 moves relative to support 2. Therefore, a good dynamic seal is required between the moving scroll 1 and support 2 to ensure effective sealing. Please refer to [the relevant documentation] for further details. Figures 3 to 10 In this embodiment, the sealing assembly 3 includes a first sealing part 31, a second sealing part 32, and a plate 33. The plate 33 is located between the moving scroll member 1 and the support member 2. The first sealing part 31 and the second sealing part 32 are respectively located on both sides of the plate 33. The first sealing part 31 is located on the side of the plate 33 closer to the moving scroll member 1, and the second sealing part 32 is located on the side of the plate 33 closer to the support member 2. That is, the sealing between the moving scroll member 1 and the plate 33 is achieved by the first sealing part 31, and the sealing between the plate 33 and the support member 2 is achieved by the second sealing part 32.

[0025] The compressor compresses the refrigerant through the relative movement of the moving scroll 1 relative to the fixed scroll 6. Therefore, the moving scroll 1 is a relatively moving component, and it will float during its movement due to the combined forces of the compression chamber V and the back pressure chamber C1. Thus, a certain gap needs to be reserved between the fixed scroll 6 and the support 2 to accommodate the floating of the moving scroll 1, while also ensuring the sealing between the support 2 and the moving scroll 1. Therefore, the second sealing part 32 includes at least an elastic part 3b. The elastic part 3b adapts to the floating of the moving scroll member 1 through its elastic action. When the moving scroll member 1 moves closer to the fixed scroll member 6, the elastic part 3b of the second sealing part 32 rebounds and remains in a tight state with the support member 2 and the plate 33. When the moving scroll member 1 moves closer to the support member 2, the elastic part 3b of the second sealing part 32 is compressed and remains in a tight state with the support member 2 and the plate 33. In other words, the elastic part 3b of the second sealing part 32 can still ensure the sealing between the plate 33 and the support member 2 during the relative floating of the moving scroll member 1. In addition, the elastic force of the elastic part 3b of the second sealing part 32 can also ensure that the plate 33 is against the moving scroll 1, thereby improving the sealing performance between the moving scroll 1 and the support 2, ensuring the relative sealing of the back pressure chamber C1, which helps to improve the back pressure regulation function of the compressor, reduce the friction between the moving scroll 1 and the fixed scroll 6 and the support 2, and can protect the moving scroll 1, the fixed scroll 6 and the support 2, while achieving the effect of vibration reduction and noise reduction.

[0026] Furthermore, the compressor includes a positioning element p, which connects the plate 33 and at least one of the support member 2 and the moving scroll member 1. In other words, the plate 33 is connected to at least one of the moving scroll members 1 via the positioning element p, the support member 2, and the positioning element p, achieving a positioning effect during assembly and preventing circumferential movement of the plate 33, i.e., restricting the circumferential movement and rotation of the plate 33, but not limiting the plate 33 axially (i.e., in the thickness direction of the plate 33), allowing the plate 33 to float axially to achieve a self-adjusting sealing effect. During the compression of the refrigerant by the compressor, there is relative movement between the moving scroll member 1 and the plate 33, therefore, in addition to sealing, it also needs to achieve wear resistance. The first sealing part 31 includes at least a wear-resistant part 3a, the hardness of which is greater than the hardness of the elastic part 3b. During the operation of the compressor, there will be lubricating oil in the back pressure chamber C1. When the lubricating oil is located at the wear-resistant part 3a, the moving scroll 1 moves relative to the plate 33. When there is a certain relative speed between the moving scroll 1 and the plate 33, the lubricating oil will enter the gap between the wear-resistant part 3a and the relatively moving surface to form an oil film seal, thereby achieving the seal between the moving scroll 1 and the plate 33.

[0027] This embodiment uses a sealing assembly 3 comprising a first sealing part 31, a second sealing part 32, and a plate 33. The first sealing part 31, located between the plate 33 and the moving scroll member 1, includes at least a wear-resistant part 3a. The second sealing part 32, located between the plate 33 and the support member 2, includes at least an elastic part 3b. The hardness of the wear-resistant part 3a is greater than that of the elastic part 3b. Through the elastic force of the elastic part 3b, the wear resistance of the wear-resistant part 3a, and the distribution of the first sealing part 31, the second sealing part 32, and the plate 33, the dynamic sealing requirement between the moving scroll member 1 and the support member 2 is achieved, ensuring the relative sealing of the back pressure chamber C1. At the same time, it can meet the floating requirement of the moving scroll member 1 and the protection performance of the moving scroll member 1, improving the performance of the sealing assembly 3 and thus helping to improve the working performance of the compressor.

[0028] Specifically, please refer to [the relevant document] again. Figures 5 to 10 The first sealing part 31 contacts both the moving scroll member 1 and the plate 33, and the second sealing part 32 contacts both the support member 2 and the plate 33. This contact enables the transmission of force between the moving scroll member 1, the sealing assembly 3, and the support member 2, thereby allowing the sealing assembly 3 to adaptively adjust according to the interaction force between the back pressure chamber C1 and the compression chamber V. Both the first sealing part 31 and the second sealing part 32 have annular structures. The plate 33 has a first surface 33a and a second surface 33b along its thickness direction F. The first surface 33a faces the first sealing part 31 and contacts it; the second surface 33b faces the second sealing part 32 and contacts it. In this embodiment, to reduce friction, slow down wear, and extend service life, both the first contact surface 3a1 and the first surface 33a are smooth surfaces.

[0029] Furthermore, the wear-resistant part 3a contacts the plate 33, meaning the moving scroll member 1 achieves sliding contact with the plate 33 through the wear-resistant part 3a. Compared to the wear-resistant part 3a and the plate 33, the production and material costs of the moving scroll member 1 are higher. The wear-resistant part 3a of the plate 33 and the first sealing part 31 can effectively protect the moving scroll member 1, reducing or preventing wear and damage. The wear-resistant part 3a is at least partially made of plastic, and its hardness is H1, where 55HD≤H1≤65HD. The material of the wear-resistant part 3a includes one or a combination of polytetrafluoroethylene, polyphenylene sulfide, polyetheretherketone, polyoxymethylene resin, and polyimide. Additionally, the elastic part 3b is at least partially made of rubber, and its hardness is H2, where 50HA≤H2≤85HA. The material of the elastic part 3b includes rubber. In this embodiment, the thickness of plate 33 is not specifically limited and can be designed according to actual needs. Plate 33 is also a wear-resistant part, which is made of wear-resistant materials, such as wear-resistant metal sheets (or plates), etc.

[0030] Please refer to it again. Figures 5 to 10 The moving scroll member 1 has a first mounting groove G1 open towards the plate 33, and the first sealing part 31 is at least partially located in the first mounting groove G1. Specifically, the first mounting groove G1 is located on the first end plate 11. Furthermore, the support member 2 has a second mounting groove G2 open towards the plate 33, such as... Figure 5 As shown; or, the plate 33 has a second mounting groove G2 open toward the support member 2, and the second sealing portion 32 is at least partially located in the second mounting groove G2, such as Figure 6 As shown; or, the support member 2 has a second mounting groove G2 open towards the plate 33, and the plate 33 also has a second mounting groove G2 open towards the support member 2, and a second sealing part 32 is installed in each second mounting groove G2, such as Figure 7 As shown, of course, the second sealing part 32 may also be partially located in the second mounting groove G2 of the support member 2 and partially located in the second mounting groove G2 of the plate 33, which is not shown in the figure.

[0031] Please refer to it again. Figure 2 , Figure 5 and Figure 6 The wear-resistant part 3a includes a first contact surface 3a1, which contacts the plate 33. To increase the sealing surface and thus improve the sealing performance, the first contact surface 3a1 is an annular plane. Furthermore, the elastic part 3b includes a second contact surface 3b1, and at least one of the moving scroll member 1 and the support member 2 contacts the second contact surface 3b1. In other words, the first sealing part 31 may also include the elastic part 3b, as described below through some embodiments:

[0032] like Figure 5As shown, in one embodiment, the first sealing part 31 includes a wear-resistant part 3a, and the second sealing part 32 includes an elastic part 3b. The wear-resistant part 3a is located between the plate 33 and the moving scroll member 1. The wear-resistant part 3a also includes a third contact surface 3a2, which contacts the moving scroll member 1. The third contact surface 3a2 and the first contact surface 3a1 are at least partially distributed along the thickness direction F of the plate 33. The cross-section of the first sealing part 31 is rectangular, specifically, the cross-section of the wear-resistant part 3a is rectangular. The elastic part 3b is located between the plate 33 and the support member 2. The second contact surface 3b1 of the elastic part 3b contacts the support member 2. The elastic part 3b also includes a fourth contact surface 3b2, which contacts the plate 33. The second contact surface 3b1 and the fourth contact surface 3b2 are at least partially distributed along the thickness direction F of the plate 33. The cross-section of the second sealing part 32 is any one of O-shape, C-shape, and X-shape. Specifically, the cross-section of the elastic part 3b is any one of O-shape, C-shape, and X-shape. In addition, the elastic part 3b can be in the form of an elastic claw, which is not shown in the figure. Of course, the cross-section of the elastic part 3b can also be other shapes. Since there are many possible implementations, they are not listed here. The cross-section is a plane passing through the center line of the sealing parts 31 and 32.

[0033] Please combine Figure 8 and Figure 9 In the above embodiment, to prevent the elastic portion 3b of the second sealing part 32 from detaching from the second mounting groove G2 and being squeezed, causing irreversible deformation, the compressor includes a protrusion 331. The protrusion 331 extends into the second mounting groove G2, and the protrusion 331 abuts against the elastic portion 3b along the thickness direction F of the plate 33. By setting the protrusion 331, the elastic portion 3b is always confined within the second mounting groove G2, preventing it from detaching from the second mounting groove G2 and being squeezed, thus ensuring effective sealing. Furthermore, to ensure that back pressure does not leak from the second sealing part 32, the protrusion 331 has a closed annular structure, meaning that the protrusion 331 and the elastic portion 3b can abut against each other in the circumferential direction to form an effective seal. The protrusion 331 is located on either the plate 33 or the support member 2. When the second mounting groove G2 is located on the support member 2, the protrusion 331 is located on the plate 33. The protrusion 331 on the plate 33 extends to the second mounting groove G2 of the support member 2 and abuts against the elastic portion 3b therein. Figure 8 As shown; when the second mounting groove G2 is located in plate 33, the protrusion 331 is located in support member 2, and the protrusion 331 on support member 2 extends to the second mounting groove G2 of plate 33 to abut against the elastic part 3b therein, as shown. Figure 9 As shown; it can also include, for example, Figure 8 and Figure 9 The structure shown is as follows.

[0034] like Figure 10 As shown, in another embodiment, in Figures 5 to 9 Based on the illustrated embodiment, the first sealing part 31 further includes an elastic part 3b, which abuts against or connects with the wear-resistant part 3a of the first sealing part 31. In this embodiment, "connection" can mean that the elastic part 3b and the wear-resistant part 3a can be processed into a single piece during the production process, or they can be connected by means of bonding, snap-fitting, etc. during the assembly process. In this embodiment, the elastic part 3b and the wear-resistant part 3a in the first sealing part 31 abut against each other, the first contact surface 3a1 of the wear-resistant part 3a of the first sealing part 31 contacts the plate 33, and the second contact surface 3b1 of the elastic part 3b of the first sealing part 31 abuts against the moving scroll member 1; the second contact surface 3b1 of the elastic part 3b of the second sealing part 32 abuts against the support member 2, and the fourth contact surface 3b2 of the elastic part 3b of the second sealing part 32 contacts the plate 33.

[0035] Of course, in some other embodiments, the second sealing part 32 may also include a wear-resistant part 3a, the elastic part 3b of the second sealing part 32 abuts against or connects with the wear-resistant part 3a of the second sealing part 32, and the second contact surface 3b1 of the elastic part 3b of the second sealing part 32 contacts the support member 2, which is not shown in the figure.

[0036] Please refer to it again. Figure 3 In order to adaptively adjust the pressure in the compression chamber V and the back pressure chamber C1 during the compression of the refrigerant, the first end plate 11 also has a through hole 11a. One end of the through hole 11a is connected to the compression chamber V, and the other end is connected to the back pressure chamber C1. The through hole 11a can connect to the central compression chamber V1 or to the intermediate compression chamber V2 with intermediate pressure, which is between the discharge pressure and the suction pressure. In a specific embodiment, the through hole 11a connects to the intermediate compression chamber V2. In this way, when the refrigerant in the back pressure chamber C1 returns to the intermediate compression chamber V2, it will also carry some lubricating oil into the compression chamber V. As the refrigerant continues to run towards the central compression chamber V1, the lubricating oil will more fully lubricate the contact surface between the moving scroll 1 and the fixed scroll 6, effectively protecting the moving scroll 1 and the fixed scroll 6.

[0037] In the above embodiment, the high-pressure refrigerant discharged from the central compression chamber V1 carries some lubricating oil into the exhaust chamber HP. The exhaust cover 7 has an oil separation chamber C2, and an oil separator (not shown in the figure) is provided in the oil separation chamber C2. Through the separation action of the oil separator, the refrigerant is discharged from the outlet 70, while the separated lubricating oil is collected in the oil separation chamber C2.

[0038] Please refer to it again. Figure 3 and combined Figure 11 In the above embodiment, the compressor includes a second bearing B2, which is located between the shaft 4 and the support member 2. Furthermore, the compressor also includes an anti-rotation mechanism (not shown in the figure) to prevent the rotating scroll member 1 from rotating. At least one of the eccentric portion 42, the first bearing B1, the second bearing B2, and the anti-rotation mechanism is located within the back pressure chamber C1. In one specific embodiment, the eccentric portion 42, the first bearing B1, the second bearing B2, and the anti-rotation mechanism are all located within the back pressure chamber C1. Since the eccentric part 42, the first bearing B1, the second bearing B2, and the anti-rotation mechanism are in a state of relative motion or have relatively moving parts during the compression of refrigerant by the compressor, in order to lubricate the relatively moving surfaces and ensure good lubrication conditions, the compressor has an oil return passage L. The oil return passage L connects the oil distribution chamber C2 and the back pressure chamber C1. That is, the lubricating oil collected in the oil distribution chamber C2 can enter the back pressure chamber C1 through the oil return passage L, thereby lubricating the eccentric part 42, the first bearing B1, the second bearing B2, and the anti-rotation mechanism in the back pressure chamber C1.

[0039] Specifically, please refer to [the relevant document] again. Figure 11 The oil return passage L includes a first passage L1, a second passage L2, and a third passage L3. The first passage L1 is located on the exhaust cover 7 and is connected to the oil separator chamber C2. The third passage L3 is located on the support member 2 and is connected to the back pressure chamber C1. The second passage L2 connects the third passage L3 and the first passage L1, serving as a transitional connection. The second passage L2 is located on one of the fixed scroll member 6, the support member 2, and the housing 8. When the outer wall of the fixed scroll member 6 is part of the compressor housing assembly, the second passage L2 is located on the fixed scroll member 6. When the fixed scroll member 6 and the support member 2 are built into the compressor housing assembly, the second passage L2 is located on the housing 8, on the support member 2, or partly on the housing 8 and partly on the support member 2. The position of the second passage L2 can be adjusted as needed. Since there are many possible ways to achieve this, they will not be listed here.

[0040] Furthermore, the first bearing B1 operates at high speed during the compression of refrigerant by the compressor. In order to ensure sufficient lubrication of the first bearing B1, the through hole 11a is at least partially aligned with the first bearing B1 along the thickness direction F of the plate 33. In this way, the lubricating oil in the compression chamber V can enter the first bearing B1 through the through hole 11a to lubricate the first bearing B1, reduce the wear of the first bearing B1, and effectively extend the service life of the first bearing B1.

[0041] In the above embodiments, a throttle plug W is installed in the oil return passage L to reduce the pressure of the returned oil. A filter can also be installed in the oil return passage L to filter impurities, reducing wear on moving parts of the compressor. The throttle plug W and the filter can also be integrated into one unit, such as... Figure 11 As shown, a single component achieves both throttling and filtration.

[0042] In addition, please refer to again Figure 3 The compressor includes a third bearing B3 and a bearing mounting part 80. The third bearing B3 connects the bearing mounting part 80 and the shaft 4. The bearing mounting part 80 is connected to the housing 8 or is an integral part thereof. By setting the third bearing B3 and the bearing mounting part 80, the shaft 4 has at least two points of support, improving the stability during shaft rotation and helping to reduce compressor operating noise. In addition, the housing 8 has an air inlet 81, which is connected to the piping of the heat exchange system. During the compression of the refrigerant, the refrigerant returns from the air inlet 81 into the compressor, and then re-enters the compression chamber V for compression and discharge. This cycle is repeated to realize the heat exchange function of the heat exchange system and meet the heat exchange requirements.

[0043] Some of the technical implementation methods described above can be combined or replaced.

[0044] The technical principles of this application have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this application that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A compressor, characterized in that: The device includes a moving scroll member, a support member, and a sealing assembly. The sealing assembly is at least partially located between the moving scroll member and the support member. The sealing assembly includes a first sealing portion, a second sealing portion, and a plate. The plate is located between the moving scroll member and the support member. The first sealing portion and the second sealing portion are located on opposite sides of the plate. The first sealing portion is located between the plate and the moving scroll member, and the second sealing portion is located between the plate and the support member. The first sealing part includes at least a wear-resistant part, and the second sealing part includes at least an elastic part, wherein the hardness of the wear-resistant part is greater than the hardness of the elastic part; The elastic part is located between the plate and the support member. The second contact surface of the elastic part contacts the support member. The elastic part also includes a fourth contact surface, which contacts the plate.

2. The compressor according to claim 1, characterized in that: The wear-resistant part is in contact with the plate, and at least part of the wear-resistant part is a plastic part. The hardness of the wear-resistant part is H1, wherein 55 HD≤H1≤65HD. The material of the wear-resistant part includes one or a combination of polytetrafluoroethylene, polyphenylene sulfide, polyether ether ketone, monooxymethylene resin, and polyimide. The elastic part is at least partially made of rubber, and the hardness of the elastic part is H2, wherein 50 HA≤H2≤85HA, and the material of the elastic part includes rubber.

3. The compressor according to claim 1, characterized in that: The wear-resistant part includes a first contact surface, which contacts the plate, and the first contact surface is an annular plane; The elastic part includes a second contact surface, and at least one of the moving vortex member and the support member is in contact with the second contact surface.

4. The compressor according to claim 1, characterized in that: The first sealing part is in contact with the moving scroll member and the plate, and the second sealing part is in contact with the support member and the plate; The plate has a first surface and a second surface along the thickness direction, the first surface facing the first sealing part and contacting the first sealing part; The second surface faces the second sealing portion, and the second surface is in contact with the second sealing portion; The wear-resistant part includes a first contact surface, both of which are smooth surfaces, and both the first sealing part and the second sealing part are annular structures.

5. The compressor according to claim 3 or 4, characterized in that: The moving scroll member has a first mounting groove with an opening facing the plate, and the first sealing portion is at least partially located in the first mounting groove; the moving scroll member includes a first end plate and a first scroll portion, and the first mounting groove is located on the first end plate; The support member has a second mounting groove open toward the plate, and / or the plate has a second mounting groove open toward the support member, wherein the second sealing portion is at least partially located in the second mounting groove.

6. The compressor according to claim 5, characterized in that: The first sealing part includes a wear-resistant part located between the plate and the moving scroll member. The wear-resistant part also includes a third contact surface that contacts the moving scroll member. The third contact surface and the first contact surface are at least partially distributed along the thickness direction of the plate. The cross-section of the first sealing part is rectangular. The second and fourth contact surfaces are at least partially distributed along the thickness direction of the plate; the cross-section of the second sealing portion is any one of O-shape, C-shape, or X-shape; The compressor includes a positioning element that connects at least one of the plate and the support element and the moving scroll element.

7. The compressor according to claim 6, characterized in that: The compressor includes a protrusion that extends into the second mounting groove and abuts against the elastic portion along the thickness direction of the plate. The protrusion is located in one of the plate and the support member. The protrusion has a closed ring structure.

8. The compressor according to claim 5, characterized in that: The first sealing part further includes an elastic part, which abuts against or connects with the wear-resistant part of the first sealing part, and the second contact surface of the elastic part of the first sealing part abuts against the moving scroll member; And / or, the second sealing portion includes an elastic portion and a wear-resistant portion, the elastic portion abutting against or connecting with the wear-resistant portion, and the second contact surface of the elastic portion of the second sealing portion contacting the support member.

9. The compressor according to claim 5, characterized in that: The compressor includes a shaft and a shaft seal, the shaft seal being located between the shaft and a support member, the shaft seal sealingly connecting the shaft and the support member; the compressor has a back pressure chamber, the back pressure chamber being located between the support member and the moving scroll member, and the back pressure chamber being located between the sealing assembly and the shaft seal; The compressor further includes a fixed scroll component and an exhaust cover. The fixed scroll component meshes with a moving scroll component. The fixed scroll component is located on the side of the first end plate away from the support component. The exhaust cover is connected to the fixed scroll component. The exhaust cover has an oil distribution chamber. The compressor has an oil return passage. The oil return passage connects the oil distribution chamber and the back pressure chamber. The compressor also includes a housing, and the support member is at least partially located within the housing.

10. The compressor according to claim 9, characterized in that: The oil return passage includes a first passage, a second passage, and a third passage. The first passage is located on the exhaust cover and is connected to the oil distribution chamber. The third passage is located on the support member and is connected to the back pressure chamber. The second passage is located on one of the fixed scroll member, the support member, and the housing, and is connected to the third passage and the first passage. The compressor has a compression chamber located between the fixed scroll member and the moving scroll member. The first end plate also has a through hole, one end of which communicates with the compression chamber and the other end of which communicates with the back pressure chamber. The shaft includes a main body and an eccentric part, the eccentric part is connected to the main body, and the eccentric part is eccentrically arranged relative to the axis of the main body. The compressor includes a first bearing, the first bearing is connected to the eccentric part and a first end plate, and the through hole is at least partially aligned with the first bearing along the thickness direction of the plate. The compressor includes a second bearing located between the shaft and the support member, and at least one of the eccentric portion, the first bearing, and the second bearing is located within the back pressure chamber.

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