Sealing structure and compressor

Abstract

The application discloses a sealing structure, a first component and a second component are assembled together, a first ring part of the first component is arranged around a second ring part of the second component, a first seal is in abutment with an inner ring surface of the first ring part and an outer ring surface of the second ring part, and a second seal is located between a first end surface of the first ring part and a second end surface of a first body, and the second seal is in abutment with the first ring part and the second body. In the application, the first ring part and the second ring part are radially sealed by the first seal, and the first ring part and the second body are end surface sealed by the second seal, and the probability of sealing failure in the end surface and the radial direction is relatively low. The application also provides a compressor applying the sealing structure.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to a sealing structure and compressor for an air conditioning system. Background Technology

[0002] Mechanical devices such as compressors consist of two independent components assembled together, forming at least one chamber between them. The fluid within this chamber needs to be isolated from the outside environment; therefore, the mating joint between the two components requires sealing to prevent leakage. In related technologies, radial or axial sealing structures are used alone, offering only a single sealing method. In practical applications, leakage can occur when the internal pressure of the chamber is too high, resulting in a relatively high probability of seal failure. Summary of the Invention

[0003] The purpose of this application is to provide a sealing structure and compressor with a low probability of seal failure.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, a sealing structure includes: a first component, a second component, and a sealing assembly, the sealing assembly including a first sealing element and a second sealing element, the first component and the second component being assembled together; the first component includes a first body and a first ring portion connected to each other, the first ring portion being located on one side of the first body along the axial direction of the first component; the second component includes a second body and a second ring portion connected to each other, the first ring portion being located on one side of the second body along the axial direction of the second component; the first ring portion is arranged around the second ring portion, the first sealing element is located between the inner ring surface of the first ring portion and the outer ring surface of the second ring portion, the first sealing element abutting against both the inner ring surface of the first ring portion and the outer ring surface of the second ring portion; the first ring portion includes a first end face located at the end of the first ring portion away from the first body, the second body includes a second end face located at the end of the second body near the second ring portion, the second sealing element is located between the first end face and the second end face, the second sealing element abutting against both the first ring portion and the second body.

[0006] In this application, the first sealing element abuts against both the inner ring surface of the first ring portion and the outer ring surface of the second ring portion. The first ring portion and the second ring portion achieve radial sealing through the first sealing element. The second sealing element abuts against both the first end face and the second end face. The first ring portion and the second body achieve end face sealing through the second sealing element. The probability of sealing failure occurring at both the end face and radial direction is low.

[0007] On the other hand, a compressor includes at least two housings and at least one sealing device, wherein two adjacent housings and one of the sealing devices are sealed together, one of the two adjacent housings is the first component described above, the other of the two adjacent housings is the second component described above, and the sealing device is the sealing assembly described above.

[0008] In this application, there are both end face seals and radial seals between two adjacent housing parts of the compressor, and the probability of seal failure in both the end face and radial directions is low. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of one embodiment of the sealing structure of this application;

[0010] Figure 2 yes Figure 1 An exploded view of the sealing structure is shown;

[0011] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the sealing structure is shown;

[0012] Figure 4 This is a schematic diagram of the structure of an embodiment of the compressor of this application;

[0013] Figure 5 yes Figure 4 An exploded view of the compressor is shown;

[0014] Figure 6 yes Figure 4 An exploded view of the compressor from another angle is shown;

[0015] Figure 7 yes Figure 6 A further exploded view of the compressor is shown;

[0016] Figure 8 yes Figure 4 A cross-sectional schematic diagram of the compressor is shown;

[0017] Figure 9 yes Figure 8 A partially enlarged schematic diagram of A is shown;

[0018] Figure 10 yes Figure 8 A partially enlarged schematic diagram of B is shown. Detailed Implementation

[0019] The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0020] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one; "multiple" indicates two or more. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects.

[0021] 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.

[0022] According to a specific embodiment of the sealing structure of this application, such as Figures 1 to 3 As shown, the sealing structure includes a first component S1, a second component S2, and a sealing assembly S3. The sealing assembly S3 includes a first sealing element S31 and a second sealing element S32. The first component S1 and the second component S2 are assembled together. The first component S1 includes a first body S11 and a first ring portion S12 connected to each other. The first ring portion S12 is located on one side of the first body S11 along the axial direction of the first component S1. The second component S2 includes a second body S21 and a second ring portion S22 connected to each other. The second ring portion S22 is located on one side of the second body S21 along the axial direction of the second component S2. The first ring portion S12 is arranged around the second ring portion S22. The first sealing element S31 is located between the inner ring surface of the first ring portion S12 and the outer ring surface of the second ring portion S22, and the first sealing element S31 abuts against both the inner ring surface of the first ring portion S12 and the outer ring surface of the second ring portion S22. The first ring portion S12 includes a first end face S13, which is located at the end of the first ring portion S12 away from the first body S11. The second body S21 includes a second end face S24, which is located at the end of the second body S21 close to the second ring portion S22. The second seal S32 is located between the first end face S13 and the second end face S24, and the second seal S32 abuts against both the first ring portion S12 and the second body S21.

[0023] In this application, the first sealing element S31 abuts against the inner ring surface of the first ring portion S12 and the outer ring surface of the second ring portion S22. The first ring portion S12 and the second ring portion S22 achieve radial sealing through the first sealing element S31. The second sealing element S32 abuts against the first end face S13 and the second end face S24. The first ring portion S12 and the second body S21 achieve end face sealing through the second sealing element S32. The provision of two types of seals at the first ring portion S12 can effectively improve the sealing capability.

[0024] The second ring portion S22 is at least partially located within the annular cavity of the first ring portion S12, and the first component S1 and the second component S2 are in a concave-convex fit. In this embodiment, referring to... Figure 2 and 3 The second ring portion S22 has an annular groove S23, the opening of which faces away from the inner annular surface of the second ring portion S22; that is, the opening of the annular groove S23 faces the inner annular surface of the first ring portion S12. The outer annular surface of the second ring portion S22 includes the groove wall surface forming the annular groove S23. Before the first component S1 and the second component S2 are assembled, the first sealing element S31 is fitted onto the second ring portion S22, and the first sealing element S31 is located in the annular groove S23. After the first component S1 and the second component S2 are assembled, the first sealing element S31 abuts against the groove wall surface forming the annular groove S23 and the inner annular surface of the first ring portion S12, thereby achieving a radial sealing effect.

[0025] The first sealing element S31 is an elastomer. In this embodiment, the first sealing element S31 is an O-ring. In some other possible embodiments, the cross-section of the first sealing element S31 can also be X-shaped, H-shaped, V-shaped, square, etc., as long as a sealing effect can be achieved, and this application is not limited thereto. Optionally, the first sealing element S31 is made of rubber.

[0026] It's important to understand that an elastic body is an object that can deform under external force but returns to its original shape when the force is removed. Elastic bodies allow for a certain degree of deformation, and this deformation is reversible.

[0027] In some embodiments, refer to Figure 3The first ring portion S12 includes a clearance surface S14, which connects the first end face S13 and the inner ring surface of the first ring portion S12. The clearance surface S14 is inclined relative to the inner ring surface of the first ring portion S12 and to the first end face S13. The first end face S13 is located at the end of the first ring portion S12 along the axial direction of the first component S1, and is connected to the outer ring surface of the first ring portion S12. Before the first component S1 and the second component S2 are assembled, the first seal S31 is fitted onto the second ring portion S22. Since the first seal S31 is not compressed at this time, a portion of the first seal S31 protrudes from the second ring portion S22 and is exposed. If the clearance surface S14 is not provided, during the assembly of the first component S1 and the second component S2, the sharp corner of the first ring portion S12 may cause the first seal S31 to break or fracture, thereby affecting the sealing effect of the first seal S31. In this embodiment, by providing a relatively smooth clearance surface S14, a guiding function is used to improve the situation where the first seal S31 is damaged during the assembly of the first component S1 and the second component S2, thereby protecting the first seal S31 and improving reliability. Optionally, the clearance surface S14 can be a plane or an arc surface.

[0028] In some other possible embodiments, an annular groove S23 is provided in the first annular portion S12, the opening of the annular groove S23 facing away from the outer annular surface of the first annular portion S12, and the inner annular surface of the first annular portion S12 includes the groove wall surface forming the annular groove S23. The first sealing member S31 abuts against the groove wall surface forming the annular groove S23 and the outer annular surface of the second annular portion S22. Before the first component S1 and the second component S2 are assembled, the first sealing member S31 is fitted onto the first annular portion S12. If a clearance surface S14 is provided, the clearance surface S14 is provided in the second annular portion S22.

[0029] In some other possible embodiments, the annular groove S23 is provided in both the first ring portion S12 and the second ring portion S22. The openings of the annular groove S23 in the first ring portion S12 and the second ring portion S22 are opposite to each other. The inner annular surface of the first ring portion S12 includes the groove wall surface forming the annular groove S23, and the outer annular surface of the second ring portion S22 includes the groove wall surface forming the annular groove S23. The first sealing member S31 abuts against both the groove wall surface forming the annular groove S23 in the first ring portion S12 and the groove wall surface forming the annular groove S23 in the second ring portion S22. Before the first component S1 and the second component S2 are assembled, the first sealing member S31 is fitted onto either the first ring portion S12 or the second ring portion S22. If a clearance surface S14 is provided, the clearance surface S14 is provided in both the first ring portion S12 and the second ring portion S22.

[0030] In this embodiment, the second sealing element S32 is a gasket. After the first component S1 and the second component S2 are assembled, the second sealing element S32 is clamped between the first ring portion S12 and the first body S11 by a clamping force. The second sealing element S32 abuts against both the first end face S13 and the second end face S24, thereby forming an end face seal.

[0031] The second seal S32 is an elastomer, but its resilience is worse than that of the first seal S31. Optionally, the second seal S32 is made of metal.

[0032] In some possible embodiments, the surface of the second seal S32 is coated with a soft material to increase deformation and improve sealing performance.

[0033] In this embodiment, refer to Figure 2 and 3 The second sealing element S32 includes a raised rib S33, which surrounds the second sealing element S32 circumferentially. After the first component S1 and the second component S2 are assembled, the raised rib S33 abuts against the first end face S13 and / or the second end face S24. On the back side of the raised rib S33 in the convex direction, the raised rib S33 has a cavity, giving the raised rib S33 better deformation capability, thereby achieving a better sealing effect. Optionally, the number of raised ribs S33 is at least one.

[0034] In some other possible embodiments, the rib S33 can be a solid structure, and the choice of material allows the rib S33 to have good morphological capability, ensuring a sealing effect. In some other possible embodiments, the second seal S32 may not have the rib S33.

[0035] Reference Figure 2 and 3 The second end face S24 is located at the end of the second body S21 along the axial direction of the second component S2. The second end face S24 is farther away from the inner ring surface of the second ring portion S22 than the outer ring surface of the second ring portion S22. The second end face S24 is connected to the outer ring surface of the second ring portion S22. The first seal S31 is closer to the internal cavity than the second seal S32. Optionally, both the first end face S13 and the second end face S24 are planar. The second ring portion S22 and the second body S21 form a stepped structure, which can be used to install and support the second seal S32, and can limit the assembly depth of the first component S1 and the second component S2.

[0036] In this application, if external fluid wants to enter the interior, it first passes through the second seal S32 and then through the first seal S31; if internal fluid wants to flow to the outside, it first passes through the first seal S31 and then through the second seal S32. The first component S1, the second component S2, and the first and second seals S31 and S32 are independent of each other and are each machined independently. Radial sealing is achieved at the first seal S31, and end-face sealing is achieved at the second seal S32. Both end-face and radial seals have good sealing capabilities when dimensionally well-fitted and the seals do not fail. The two seals form a double guarantee, enhancing the sealing capability. On the one hand, the end-face sealing capability of the second seal S32 and the radial sealing capability of the first seal S31 both depend on the size and characteristics of the parts. Furthermore, the machining of the end-face fit, the radial fit, the first seal S31, and the second seal S32 are all separate. Therefore, defects in the end face and radial fit will not affect each other, resulting in lower machining difficulty and a higher probability of achieving two seals. On the other hand, the conditions for sealing failure of the end face seal are different from those for sealing failure of the radial seal. For example, the relative motion between the first component S1 and the second component S2 corresponding to sealing failure of the end face and the radial seal are different, the decay time of the sealing effect of the end face and the radial seal are different, and the materials of the first sealing component S31 and the second sealing component S32 are different. Therefore, the probability of sealing failure of both the end face and the radial seal is low.

[0037] Assuming the probability of seal failure at the first seal S31 is K1 and the probability of seal failure at the second seal S32 is K2, then for both seals to fail simultaneously, a seal failure will occur. From a probabilistic perspective, the probability of simultaneous failure is the product of the two probabilities, i.e., K1 * K2. Therefore, by simultaneously applying end-face sealing and radial sealing to the first ring S12, the sealing capability can be increased by an order of magnitude, the probability of seal failure is extremely low, and the sealing effect is excellent.

[0038] The first component S1 and the second component S2 are assembled and fixed together, thereby forming a seal with the sealing assembly S3. Specifically, the first component S1 includes at least one first assembly part S10, the second component S2 includes at least one second assembly part S20, and the second seal S32 includes at least one third assembly part S30. The first assembly part S10, the second assembly part S20, and the third assembly part S30 correspond one-to-one. The third assembly part S30 is at least partially located between the first assembly part S10 and the second assembly part S20. The first assembly part S10, the second assembly part S20, and the third assembly part S30 are connected and fixed.

[0039] Optionally, the first component S1 and the second component S2 can be detachably assembled together, and can be connected by one or more of the following methods: snap-fit, riveting, fasteners, etc., as long as the fixing reliability and detachability can be ensured, this application does not limit them.

[0040] Optionally, the first component S1 is a single piece; and / or, the second component S2 is a single piece; and / or, the first seal S31 is a single piece; and / or, the second seal S32 is a single piece. This single-piece structure enhances the strength of the components, thereby improving reliability.

[0041] According to a specific embodiment of the compressor 100 of this application, such as Figures 4 to 10 As shown, the compressor 100 includes a housing, and a motor component, bearing component, electrical control component, and at least a portion of the compression component are disposed within the inner cavity of the housing. The motor component of this application includes components such as a stator and rotor; the bearing component includes components such as bearings, crankshafts, and bushings; the electrical control component includes components such as a controller and connectors; and the compression component includes related components that provide a compression chamber and realize the compression action, such as a screw and a scroll plate. The working principles of various compression devices for compressing gaseous fluids are well known to those skilled in the art and will not be elaborated upon here.

[0042] The compressor 100 includes at least one sealing device, and the housing includes at least two housing portions. Two adjacent housing portions and one of the sealing devices are sealingly connected, and the two adjacent housing portions and the sealing device that achieves the seal together constitute the aforementioned sealing structure. It is understood that one of the two adjacent housing portions is the aforementioned first component S1, the other of the two adjacent housing portions is the aforementioned second component S2, and the sealing device is the aforementioned sealing assembly S3.

[0043] In this embodiment, refer to Figure 7 and 8 The aforementioned at least two housing components include an exhaust cover 1, a stationary scroll 2, a main bearing housing 3, a motor housing 4, and an electrical control cover 5. Along the axial direction of the compressor 100, the exhaust cover 1, stationary scroll 2, main bearing housing 3, motor housing 4, and electrical control cover 5 are arranged sequentially. The exhaust cover 1 is sealed to one end of the stationary scroll 2, the other end of the stationary scroll 2 is sealed to one end of the main bearing housing 3, the other end of the main bearing housing 3 is sealed to one end of the motor housing 4, and the other end of the motor housing 4 is sealed to the electrical control cover 5.

[0044] The compressor 100 has an exhaust chamber Q1, an installation chamber Q2, and an electrical control chamber Q3. The exhaust chamber Q1 is located between the stationary scroll 2 and the exhaust cover 1. The electrical control chamber Q3 is located between the electrical control cover 5 and the motor housing 4. The stationary scroll 2, the main bearing seat 3, and the motor housing 4 are located around the installation chamber Q2. At least a portion of the installation chamber Q2 is located in the motor housing 4, and at least a portion of the electrical control chamber Q3 is located in the motor housing 4.

[0045] The electrical control cavity Q3 is used to house the electrical control components, and the mounting cavity Q2 is used to house the motor components, bearing components, and at least part of the compression components. The mounting cavity Q2 is isolated from the electrical control cavity Q3. The exhaust cavity Q1 is connected to the outlet of the compression cavity of the compression component and the outlet of the compressor 100. The mounting cavity Q2 is connected to the inlet of the compressor 100 and the inlet of the compression cavity of the compression component.

[0046] The aforementioned at least one sealing device includes a first sealing part 6, a second sealing part 7, and a third sealing part 8. The first sealing part 6 includes a first sealing unit 61 and a second sealing unit 62, with the second sealing unit 62 having a first annular protrusion 63. The second sealing part 7 includes a third sealing unit 71 and a fourth sealing unit 72, with the fourth sealing unit 72 having a second annular protrusion 73. The third sealing part 8 includes a fifth sealing unit 81 and a sixth sealing unit 82, with the sixth sealing unit 82 having a third annular protrusion 83. The six sealing units are independent of each other and are each processed and shaped independently. The structural designs of the first sealing unit 61, the third sealing unit 71, and the fifth sealing unit 81 can refer to the relevant description of the first sealing element S31 mentioned above. The structural designs of the second sealing unit 62, the fourth sealing unit 72, and the sixth sealing unit 82 can refer to the relevant description of the second sealing element S32 mentioned above. The structural designs of the three annular protrusions can refer to the relevant description of the protruding ribs S33 mentioned above. The structural designs of the three sealing parts can refer to the relevant description of the sealing assembly S3 mentioned above.

[0047] The exhaust cover 1 includes a first housing 11 and a first annular platform 12. The first annular platform 12 is located on one side of the first housing 11 in the axial direction. The first annular platform 12 includes a first top surface 13 and a first guide surface 14. The first guide surface 14 connects the inner annular surface of the first annular platform 12 and the first top surface 13. The stationary vortex disk 2 includes a second housing 21, a second annular platform 22, and a third annular platform 24. The second annular platform 22 and the third annular platform 24 are located on opposite sides of the second housing 21 in the axial direction. The second housing 21 includes a second top surface 23, which is connected to the outer annular surface of the second annular platform 22. The second annular platform 22 has a first mounting groove 220. The third annular platform 24 includes a third top surface 25 and a second guide surface 26. The second guide surface 26 connects the inner annular surface of the third annular platform 24 and the third top surface 25. The main bearing housing 3 includes a third housing 31, a fourth annular platform 32, and a fifth annular platform 34. The fourth annular platform 32 and the fifth annular platform 34 are located on opposite sides of the third housing 31 in the axial direction. The third housing 31 includes a fourth top surface 33 and a fifth top surface 35. The fourth top surface 33 is connected to the outer annular surface of the fourth annular platform 32, and the fifth top surface 35 is connected to the outer annular surface of the fifth annular platform 34. The fourth annular platform 32 has a second mounting groove 320, and the fifth annular platform 34 has a third mounting groove 340. The motor housing 4 includes a fourth housing 41 and a sixth annular platform 42. The sixth annular platform 42 is located on one side of the fourth housing 41 in the axial direction, and the other side of the fourth housing 41 in the axial direction is sealed to the electrical control cover 5. The sixth annular platform 42 includes a sixth top surface 43 and a third guide surface 44. The third guide surface 44 connects the inner annular surface of the sixth annular platform 42 and the sixth top surface 43.

[0048] The second annular platform 22 is at least partially located within the annular cavity of the first annular platform 12. The first sealing unit 61 is located in the first mounting groove 220, between the inner annular surface of the first annular platform 12 and the outer annular surface of the second annular platform 22. The first sealing unit 61 abuts against both the inner annular surface of the first annular platform 12 and the outer annular surface of the second annular platform 22. The second sealing unit 62 is located between the first top surface 13 and the second top surface 23, abutting against both the first top surface 13 and the second top surface 23.

[0049] The fourth annular platform 32 is at least partially located within the annular cavity of the third annular platform 24. The third sealing unit 71 is located in the second mounting groove 320, between the inner annular surface of the third annular platform 24 and the outer annular surface of the fourth annular platform 32, and abuts against both the inner annular surface of the third annular platform 24 and the outer annular surface of the fourth annular platform 32. The fourth sealing unit 72 is located between the third top surface 25 and the fourth top surface 33, and abuts against both the third top surface 25 and the fourth top surface 33.

[0050] The fifth annular platform 34 is at least partially located within the annular cavity of the sixth annular platform 42. The fifth sealing unit 81 is located in the third mounting groove 340, between the inner annular surface of the sixth annular platform 42 and the outer annular surface of the fifth annular platform 34, and abuts against both the inner annular surface of the sixth annular platform 42 and the outer annular surface of the fifth annular platform 34. The sixth sealing unit 82 is located between the fifth top surface 35 and the sixth top surface 43, and abuts against both the fifth top surface 35 and the sixth top surface 43.

[0051] The structural designs of the first ring platform 12, the third ring platform 24, and the sixth ring platform 42 can refer to the relevant description of the first ring portion S12 above. The structural designs of the second ring platform 22, the fourth ring platform 32, and the fifth ring platform 34 can refer to the relevant description of the second ring portion S22 above. The structural designs between the first housing 11 and the first ring platform 12, between the second housing 21 and the third ring platform 24, and between the fourth housing 41 and the sixth ring platform 42 can refer to the relevant description of the first component S1 above. The structural designs between the second housing 21 and the second ring platform 22, between the third housing 31 and the fourth ring platform 32, and between the third housing 31 and the fifth ring platform 34 can refer to the relevant description of the second component S2 above.

[0052] In this embodiment, the exhaust cover 1, the stationary scroll 2, and the first sealing part 6 form one of the aforementioned sealing structures; the stationary scroll 2, the main bearing housing 3, and the second sealing part 7 form another of the aforementioned sealing structures; and the main bearing housing 3, the motor housing 4, and the third sealing part 8 form yet another of the aforementioned sealing structures. On one hand, each potential leakage channel of the compressor 100's housing is double-sealed, thus enhancing the seal. On the other hand, because the compressor 100's housing is divided into multiple housing parts, the size of each individual housing part is reduced, increasing its rigidity and significantly improving the compressor 100's vibration and noise. It is understood that the seals separate the housing parts, reducing vibration transmission and further lowering the compressor 100's NVH. The seals reduce or isolate the hard connections between housing parts, weakening the vibration generated by a single housing part and further reducing noise.

[0053] It should be understood that the specific number of housing parts in the compressor 100 is selected according to design requirements. For example, the number of parts may be more or less than the five in this embodiment. Alternatively, the housing may be divided in other ways, not limited to the five parts in this embodiment.

[0054] The exhaust cover 1 includes a first mounting portion 10, a second sealing unit 62 includes a second mounting portion 620, a stationary volute 2 includes a third mounting portion 20, a fourth sealing unit 72 includes a fourth mounting portion 720, a main bearing housing 3 includes a fifth mounting portion 30, a sixth sealing unit 82 includes a sixth mounting portion 820, and a motor housing 4 includes a seventh mounting portion 40. The second mounting portion 620 is at least partially located between the first mounting portion 10 and the third mounting portion 20, the fourth mounting portion 720 is at least partially located between the third mounting portion 20 and the fifth mounting portion 30, and the sixth mounting portion 820 is at least partially located between the fifth mounting portion 30 and the seventh mounting portion 40.

[0055] In this embodiment, the compressor 100 includes a connector that is connected to and fixed to the first mounting part 10, the third mounting part 20, the fifth mounting part 30, and the seventh mounting part 40, thereby limiting the second mounting part 620, the fourth mounting part 720, and the sixth mounting part 820, and enabling the first sealing part 6, the second sealing part 7, and the third sealing part 8 to achieve sealing.

[0056] In some other possible embodiments, the compressor 100 may include two or more connectors to fix and limit the mounting parts.

[0057] In this application, the sealing connection between the electrical control cover 5 and the motor housing 4 can be achieved using an O-ring. It can also be achieved through welding, including one or a combination of brazing, resistance welding, friction stir welding, and argon arc welding. Of course, other methods such as bonding or snap-fitting can also be used, depending on the requirements.

[0058] In this application, the integral part can be processed by casting, forging, stamping, extrusion, metal injection molding, metal powder metallurgy, etc. to form a base material, and then processed by machining; or the integral part can be directly processed by casting, forging, stamping, extrusion, metal injection molding, metal powder metallurgy, etc.

[0059] Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this application, and all technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within this application.

Claims

1. A sealing structure, characterized in that, include: The first component, the second component, and the sealing assembly, wherein the sealing assembly includes a first seal and a second seal, and the first component and the second component are assembled together; the first component includes a first body and a first ring portion connected to each other, the first ring portion being located on one side of the first body along the axial direction of the first component; the second component includes a second body and a second ring portion connected to each other, the second ring portion being located on one side of the second body along the axial direction of the second component. The first ring portion is arranged around the second ring portion, and the first seal is located between the inner ring surface of the first ring portion and the outer ring surface of the second ring portion. The first seal abuts against both the inner ring surface of the first ring portion and the outer ring surface of the second ring portion. The first ring portion includes a first end face located at the end of the first ring portion away from the first body. The second body includes a second end face located at the end of the second body close to the second ring portion. The second seal is located between the first end face and the second end face, and the second seal abuts against both the first ring portion and the second body.

2. The sealing structure as described in claim 1, characterized in that, At least one of the first ring portion and the second ring portion has an annular groove, the first seal is located in the annular groove, and the first seal is an O-ring.

3. The sealing structure as described in claim 2, characterized in that, The second ring portion has the ring groove, and the first ring portion includes a clearance surface. The clearance surface connects the first end face and the inner ring surface of the first ring portion. The clearance surface is inclined relative to the inner ring surface of the first ring portion and is inclined relative to the first end face. The first end face is located at the end of the first ring portion along the axial direction of the first component. Alternatively, the first ring portion has the ring groove, and the second ring portion includes a clearance surface, the clearance surface connecting the end face of the second ring portion and the outer ring face of the second ring portion, the clearance surface being inclined relative to the inner ring face of the second ring portion, the clearance surface being inclined relative to the end face of the second ring portion, and the end face of the second ring portion connecting the inner ring face of the second ring portion and the outer ring face of the second ring portion.

4. The sealing structure as described in claim 1, characterized in that, The second end face is located at the end of the second body along the axial direction of the second component. The second end face is farther away from the inner ring face of the second ring portion than the outer ring face of the second ring portion. The second end face is connected to the outer ring face of the second ring portion.

5. The sealing structure as described in claim 1 or 4, characterized in that, The second sealing element is a gasket, and the second sealing element includes a rib that surrounds the second sealing element circumferentially, and the rib abuts against the first end face and / or the second end face.

6. The sealing structure as described in claim 1, characterized in that, The first component includes at least one first assembly part, the second component includes at least one second assembly part, and the second seal includes at least one third assembly part. The first assembly part, the second assembly part, and the third assembly part correspond one-to-one. The third assembly part is at least partially located between the first assembly part and the second assembly part. The first assembly part, the second assembly part, and the third assembly part are connected and fixed.

7. The sealing structure as described in claim 1, 2, 4, or 6, characterized in that, The first component is a single piece; and / or, the second component is a single piece; and / or, the first seal is a single piece; and / or, the second seal is a single piece.

8. A compressor, characterized in that, It includes at least two shells and at least one sealing device, with two adjacent shells and one of the sealing devices being sealed together, one of the two adjacent shells being a first component according to any one of claims 1 to 7, the other of the two adjacent shells being a second component according to any one of claims 1 to 7, and the sealing device being a sealing assembly according to any one of claims 1 to 7.

9. The compressor as claimed in claim 8, characterized in that, The at least two housing portions include an exhaust cover and a stationary volute, the at least one sealing device includes a first sealing portion, the exhaust cover, the stationary volute and the first sealing portion are sealed together, and the compressor has an exhaust chamber located between the stationary volute and the exhaust cover; Alternatively, the at least two housing portions include a stationary scroll and a main bearing housing, the at least one sealing device includes a second sealing portion, the stationary scroll, the main bearing housing and the second sealing portion are sealed together, the compressor has a mounting cavity, and the stationary scroll and the main bearing housing are located on the periphery of the mounting cavity; Alternatively, the at least two housing portions include a main bearing housing and a motor housing, the at least one sealing device includes a third sealing portion, the main bearing housing, the motor housing and the third sealing portion are sealed together, the compressor has a mounting cavity, and the main bearing housing and the motor housing are located on the periphery of the mounting cavity.

10. The compressor as claimed in claim 8, characterized in that, The compressor includes a motor housing and an electronic control cover, and the electronic control cover is sealed to the motor housing. The compressor has an electrical control cavity and a mounting cavity. The electrical control cavity is used to accommodate electrical control components, and the mounting cavity is used to accommodate motor components, bearing components, and at least a portion of the compression components. The mounting cavity and the electrical control cavity are isolated from each other. At least a portion of the mounting cavity is located in the motor housing, and at least a portion of the electrical control cavity is located in the motor housing.

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