Compressor and refrigeration apparatus

Abstract

The application discloses a compressor and a refrigeration device. The compressor comprises a compression structure, the compression structure comprising a static disc and a dynamic disc, a compression cavity being enclosed between the static disc and the dynamic disc, a groove being arranged on a side of the static disc away from the dynamic disc, and the inner wall of the groove comprising an inner side wall and an outer side wall in the radial direction of the dynamic disc; a floating sealing device being movably arranged in the groove, a back pressure cavity being enclosed between the floating sealing device and the inner wall of the groove, the back pressure cavity being capable of being communicated with the compression cavity, the floating sealing device comprising a base plate and a sealing structure, the sealing structure covering at least a part of the base plate, the sealing structure comprising a first sealing skirt and a second sealing skirt, the first sealing skirt being in abutment with the inner side wall of the groove, and the second sealing skirt being in abutment with the outer side wall of the groove. The application can effectively solve the problem of gas leakage, can guarantee the effectiveness and feasibility of sealing, and provides reliable structural support for guaranteeing the energy efficiency and operation stability of the compressor.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, specifically relating to a compressor and refrigeration equipment. Background Technology

[0002] In related technologies, scroll compressors include a float assembly, which comprises an upper pressure plate, a lower pressure plate, an inner sealing lip, and an outer sealing lip. The inner and outer sealing lips are sandwiched between the upper and lower pressure plates, which are riveted together. Uneven riveting pressure between the riveted upper and lower pressure plates leads to uneven contact between the inner and outer sealing lips and the upper and lower pressure plates. This can cause leakage between the high-pressure and medium-pressure zones, and between the medium-pressure and low-pressure zones of the compressor. Consequently, this reduces the energy efficiency of the scroll compressor, as well as its performance and market competitiveness. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this application proposes a compressor.

[0005] The second aspect of this application proposes a refrigeration device.

[0006] In view of the above, a first aspect of this application provides a compressor, comprising: a compression structure including a stationary disc and a moving disc, a compression chamber enclosed between the stationary disc and the moving disc, a groove provided on the side of the stationary disc away from the moving disc, and an inner wall of the groove including an inner side wall and an outer side wall along the radial direction of the moving disc; a floating sealing device movably disposed in the groove, a back pressure chamber enclosed between the floating sealing device and the inner wall of the groove, the back pressure chamber being able to communicate with the compression chamber, the floating sealing device comprising: a base plate; a sealing structure covering at least a portion of the base plate, the sealing structure including a first sealing skirt and a second sealing skirt, the first sealing skirt abutting against the inner side wall of the groove, and the second sealing skirt abutting against the outer side wall of the groove.

[0007] This application provides a compressor comprising a compression structure and a floating seal device. The compression structure includes a stationary disc and a moving disc.

[0008] A compression chamber is formed between the stationary and moving discs. A groove is provided on the side of the stationary disc away from the moving disc. A back pressure chamber is formed between the floating sealing device and the inner wall of the groove. The back pressure chamber can communicate with the compression chamber.

[0009] The floating sealing device is movably disposed in the groove, and the floating sealing device can float in the groove under pressure.

[0010] The inner wall of the groove includes an inner side wall and an outer side wall. Along the radial direction of the moving disk, the inner side wall and the outer side wall of the groove are arranged opposite to each other.

[0011] When the compressor is operating, the moving plate moves relative to the stationary plate, connecting the back pressure chamber to the compression chamber. This introduces intermediate pressure into the back pressure chamber. Under the influence of this intermediate pressure, the stationary plate moves downwards along the axial direction of the moving plate to ensure proper fit between them. Simultaneously, the floating sealing device floats upwards along the axial direction of the moving plate to a first position. In this first position, the floating sealing device abuts against the compressor's partition plate, forming a seal. Specifically, the first sealing skirt abuts against the inner wall of the groove, achieving a seal between the high-pressure area (i.e., the compressor's second chamber) and the intermediate-pressure area (i.e., the compressor's back pressure chamber) under high pressure. The second sealing skirt abuts against the outer wall of the groove, achieving a seal between the intermediate-pressure area (i.e., the compressor's back pressure chamber) and the low-pressure area (the compressor's first chamber) under intermediate-pressure.

[0012] When the compressor stops working, the moving plate stops moving, and the floating seal device moves towards the moving plate to the second position. The floating seal device separates from the partition plate, and the high-pressure area and the low-pressure area are connected.

[0013] The floating sealing device includes a base plate and a sealing structure. The sealing structure covers at least a portion of the base plate; that is, the sealing structure covers a portion of the outer side of the base plate, or the sealing structure completely covers the outer side of the base plate. The sealing structure is used to mate with the inner wall of the groove and the partition plate of the compressor. Specifically, the sealing structure includes a first sealing skirt and a second sealing skirt. The first sealing skirt is used to abut against the inner sidewall of the groove, and the second sealing skirt is used to abut against the outer sidewall of the groove, thereby achieving sealing between the high-pressure and medium-pressure areas, and sealing between the medium-pressure and low-pressure areas, when the compressor is in operation. Compared to related technologies where the inner and outer sealing lips are riveted between the upper and lower pressure plates, the sealing structure covers at least a portion of the substrate. In this case, the positions of the first and second sealing skirts are not limited by the rivet pressure; the sealing between the high-pressure and medium-pressure zones, and between the medium-pressure and low-pressure zones, is not limited by whether the inner and outer sealing lips are evenly fitted with the upper and lower pressure plates. This ensures the positional relationship between the first and second sealing skirts, the fit dimensions between the first sealing skirt and the inner wall of the groove, and the fit dimensions between the second sealing skirt and the outer wall of the groove. The sealing structure utilizes its own external shape to achieve sealing between the high-pressure and medium-pressure zones, as well as between the medium-pressure and low-pressure zones. This effectively solves the problem of gas leakage, ensures the effectiveness and feasibility of the seal, and provides reliable structural support for ensuring the energy efficiency and operational stability of the compressor.

[0014] In addition, the sealing structure covering at least a portion of the substrate simplifies the assembly and disassembly process of the compression structure and floating sealing device compared to the related technology of clamping the inner and outer sealing lips between the upper and lower pressure plates by riveting. This simplifies the assembly and disassembly process of the compressor, improves the assembly and disassembly efficiency of the compressor, and thus reduces the production and maintenance costs of the compressor.

[0015] In some technical solutions, the substrate and the sealing structure can optionally be an integrated structure.

[0016] In this technical solution, the mating structure of the substrate and the sealing structure is refined, and the substrate and the sealing structure are integrated. This structural design eliminates the assembly process of the substrate and the sealing structure, thus simplifying the assembly and subsequent disassembly of the floating seal device. This improves the assembly and disassembly efficiency of the compressor, thereby reducing the production and maintenance costs of the compressor. Furthermore, the integrated structure of the substrate and the sealing structure ensures the dimensional accuracy requirements of the assembly of the compression structure and the floating seal device, effectively solving the problem of gas leakage and providing reliable structural support for ensuring the energy efficiency and operational stability of the compressor.

[0017] In some technical solutions, the substrate and sealing structure can optionally be detachably connected.

[0018] In this technical solution, the connection method between the substrate and the sealing structure includes any one or a combination of the following: snap-fit, screw-fit, magnetic attraction, and fastening connection by fasteners (such as screws, bolts, or rivets). Specifically, the disassembly and assembly of the substrate and the sealing structure, as well as the installation position of the sealing structure relative to the substrate, can be determined according to the actual situation, thus adapting to the usage requirements of different types of floating sealing devices. The product has strong adaptability and improves its performance.

[0019] In some technical solutions, the sealing structure is optionally injection molded onto the substrate.

[0020] In this technical solution, the mating structure between the sealing structure and the substrate is refined. Specifically, the sealing structure is injection molded onto the substrate; that is, the sealing structure and the substrate are formed by injection molding. This simplifies the assembly and subsequent disassembly of the floating sealing device, improving the assembly and disassembly efficiency of the compressor and thus reducing the production and maintenance costs of the compressor. Furthermore, injection molding the sealing structure onto the substrate ensures the dimensional accuracy requirements of the assembly between the compression structure and the floating sealing device, effectively solving the gas leakage problem and providing reliable structural support for ensuring the compressor's energy efficiency and operational stability.

[0021] In some technical solutions, the sealing structure optionally covers the entire substrate.

[0022] In this technical solution, the mating structure between the sealing structure and the substrate is refined. Specifically, the sealing structure completely covers the substrate, that is, the outer side of each part of the substrate is covered with the sealing structure, so that the floating sealing device can effectively cooperate with the groove wall of the groove through the sealing structure.

[0023] In some technical solutions, optionally, the inner peripheral wall of the substrate is provided with a first clearance groove, and the first clearance groove and the first sealing skirt are both arranged around the inner sidewall of the groove; the first sealing skirt extends obliquely from the first clearance groove in the direction away from the compression cavity.

[0024] In this technical solution, the structure of the first sealing skirt is refined.

[0025] The substrate has an inner peripheral wall and an outer peripheral wall. Specifically, the substrate is cylindrical. The inner peripheral wall of the substrate is provided with a first clearance groove, which surrounds the inner side wall of the groove, and a first sealing skirt surrounds the inner side wall of the groove.

[0026] The first sealing skirt extends obliquely from the first clearance groove in a direction away from the compression chamber. That is, a first portion of the first sealing skirt is located within the first clearance groove, a second portion of the first sealing skirt extends obliquely out of the first clearance groove, and the portion of the first sealing skirt outside the first clearance groove abuts against the inner wall of the groove. Specifically, the area enclosed by the inner contour line of the first sealing skirt on the side facing the moving disk is larger than the area enclosed by the inner contour line of the first sealing skirt on the side facing away from the moving disk.

[0027] It is understandable that the pressure in the back pressure chamber is less than the pressure in the second chamber of the compressor. The first sealing skirt extends obliquely upward along the axial direction of the moving disc. The pressure difference between the back pressure chamber and the second chamber is matched with the extension direction of the first sealing skirt, so that the first sealing skirt can fit tightly against the inner wall of the groove, ensuring the sealing between the back pressure chamber and the second chamber.

[0028] In some technical solutions, optionally, along the axial direction of the moving disk, the depth of the first clearance groove is greater than the height of the first sealing skirt; the width of the first clearance groove in the radial direction of the moving disk is greater than the thickness of the first sealing skirt; the side end face of the floating sealing device facing the moving disk is the first end face; the portion of the inner peripheral wall of the floating sealing device located between the first sealing skirt and the first end face has a first gap with the inner side wall of the groove, the value of the first gap being less than the thickness of the first sealing skirt.

[0029] In this technical solution, the mating structure of the first clearance groove and the first sealing skirt is refined.

[0030] Along the axial direction of the moving disc, the depth of the first clearance groove is greater than the height of the first sealing skirt. That is, the depth of the first clearance groove in the axial direction of the moving disc is greater than the height of the first sealing skirt in the axial direction of the moving disc.

[0031] The width of the first clearance groove in the radial direction of the moving plate is greater than the thickness of the first sealing skirt.

[0032] The first part of the first sealing skirt is located inside the first clearance groove, and the second part of the first sealing skirt is located outside the first clearance groove. By defining the relationship between the depth of the first clearance groove and the height of the first sealing skirt, and defining the relationship between the width of the first clearance groove and the thickness of the first sealing skirt, the first clearance groove provides clearance space for the deformation of the first sealing skirt, ensuring that the first sealing skirt has sufficient clearance space. This satisfies the usage requirements of the floating sealing device moving relative to the groove under pressure, while also satisfying the usage requirements of the first sealing skirt effectively abutting against the inner wall of the groove. Consequently, it satisfies the sealing requirements between the back pressure chamber and the second chamber when the compressor is in operation.

[0033] The side of the floating sealing device facing the moving plate is designated as the first end face. The portion of the inner peripheral wall of the floating sealing device located between the first sealing skirt and the first end face has a first gap with the inner wall of the groove. The value of the first gap is less than the thickness of the first sealing skirt. By defining the relationship between the value of the first gap and the thickness of the first sealing skirt, the effectiveness and reliability of the seal can be ensured while meeting the usage requirements of allowing the floating sealing device to move relative to the groove.

[0034] In some technical solutions, optionally, along the axial direction of the moving disk, the groove wall of the first clearance groove includes a first groove wall and a second groove wall, the first groove wall is located between the second groove wall and the moving disk, and the first sealing skirt is closer to the first groove wall at its first starting end in the first clearance groove than the second groove wall.

[0035] In this technical solution, the mating structure of the first clearance groove and the first sealing skirt is refined.

[0036] Along the axial direction of the moving disk, the groove wall of the first clearance groove includes a first groove wall and a second groove wall, which are arranged opposite to each other. Specifically, the first groove wall is located between the second groove wall and the moving disk.

[0037] The first sealing skirt is closer to the first groove wall than the second groove wall at its first starting end in the first clearance groove. That is, along the axial direction of the moving disc, the distance from the first starting end of the first sealing skirt to the first groove wall is less than the distance from the first starting end of the first sealing skirt to the second groove wall. In other words, the first sealing skirt is closer to the moving disc at its first starting end in the first clearance groove. When the compressor is in operation, the first sealing skirt more easily generates effective elastic deformation, and the first sealing ring can adaptively adjust its shape according to the shape of the inner wall of the groove. The first sealing skirt can fit tightly against the inner wall of the groove at a more reasonable angle and shape, providing contact pressure and sealing between the first sealing skirt and the inner wall of the groove, thus ensuring effective sealing between the back pressure chamber and the second chamber.

[0038] In addition, the first sealing skirt is closer to the first groove wall than the second groove wall at the first starting end of the first relief groove. Under the action of pressure difference, when the first sealing skirt contacts the inner wall of the groove, it can form a sealing surface that transitions from the inside to the outside, from tight to smooth. This can achieve progressive sealing, reduce local stress concentration, and help improve the effectiveness and reliability of the seal.

[0039] In some technical solutions, optionally, the substrate is provided with a second clearance groove, at least a portion of which is located on the outer peripheral wall of the substrate. The second clearance groove and the second sealing skirt are both arranged around the inner sidewall of the groove. The second sealing skirt extends obliquely from the second clearance groove toward the compression cavity.

[0040] In this technical solution, the structure of the second sealing skirt is refined.

[0041] The substrate has an inner peripheral wall and an outer peripheral wall. Specifically, the substrate is cylindrical. The substrate is provided with a second clearance groove, at least a portion of which is located on the outer peripheral wall of the substrate. That is, a portion of the second clearance groove is located on the outer peripheral wall of the substrate, or the entire second clearance groove is located on the outer peripheral wall of the substrate.

[0042] The second clearance groove and the second sealing skirt are both arranged around the inner wall of the groove. That is, the second clearance groove and the second sealing skirt are both arranged around the inner wall of the groove.

[0043] The second sealing skirt extends obliquely from the second clearance groove toward the compression chamber. That is, the first part of the second sealing skirt is located within the second clearance groove, the second part of the second sealing skirt extends obliquely out of the second clearance groove, and the portion of the second sealing skirt outside the second clearance groove abuts against the outer wall of the groove. Specifically, the area enclosed by the inner contour line of the second sealing skirt on the side facing the moving disk is larger than the area enclosed by the inner contour line of the second sealing skirt on the side facing away from the moving disk.

[0044] It is understandable that the pressure in the back pressure chamber is greater than the pressure in the first chamber of the compressor. The second sealing skirt extends obliquely downward along the axial direction of the moving plate. The pressure difference between the back pressure chamber and the first chamber is matched with the extension direction of the second sealing skirt, so that the second sealing skirt can fit tightly against the outer wall of the groove, ensuring the sealing between the back pressure chamber and the first chamber.

[0045] In some technical solutions, optionally, along the axial direction of the moving disk, the depth of the second clearance groove is greater than the height of the second sealing skirt; the width of the second clearance groove in the radial direction of the moving disk is greater than the thickness of the second sealing skirt; the side end face of the floating sealing device facing away from the moving disk is the second end face; the portion of the outer peripheral wall of the floating sealing device located between the second sealing skirt and the second end face has a second gap with the outer side wall of the groove, the value of the second gap being less than the thickness of the second sealing skirt.

[0046] In this technical solution, the mating structure of the second clearance groove and the second sealing skirt is refined.

[0047] Along the axial direction of the moving disc, the depth of the second clearance groove is greater than the height of the second sealing skirt. That is, the depth of the second clearance groove in the axial direction of the moving disc is greater than the height of the second sealing skirt in the axial direction of the moving disc.

[0048] The width of the second clearance groove in the radial direction of the moving plate is greater than the thickness of the second sealing skirt.

[0049] The first part of the second sealing skirt is located inside the second clearance groove, and the second part of the second sealing skirt is located outside the second clearance groove. By defining the relationship between the depth of the second clearance groove and the height of the second sealing skirt, and defining the relationship between the width of the second clearance groove and the thickness of the second sealing skirt, the second clearance groove provides clearance space for the deformation of the second sealing skirt, ensuring that the second sealing skirt has sufficient clearance space. This satisfies the requirement that the floating sealing device can move relative to the groove under pressure, while also satisfying the requirement that the second sealing skirt effectively abuts against the outer wall of the groove. Consequently, it ensures the sealing between the back pressure chamber and the first chamber when the compressor is in operation.

[0050] The side of the floating seal device facing away from the moving plate is the second end face. The portion of the outer peripheral wall of the floating seal device located between the second sealing skirt and the second end face has a second gap with the outer wall of the groove. The value of the second gap is less than the thickness of the second sealing skirt. By defining the relationship between the value of the second gap and the thickness of the second sealing skirt, the effectiveness and reliability of the seal can be ensured while meeting the usage requirements of allowing the floating seal device to move relative to the groove.

[0051] In some technical solutions, optionally, when a portion of the second clearance groove is located on the outer peripheral wall of the substrate, the other portion of the second clearance groove is located on the side end face of the substrate facing the moving disk.

[0052] In this technical solution, with a portion of the second clearance groove located on the outer peripheral wall of the substrate, the other portion of the second clearance groove is located on the side end face of the substrate facing the moving disk. This can be understood as the second clearance groove being located at the junction of the outer peripheral wall of the substrate and the side end face of the substrate facing the moving disk. The second clearance groove provides reasonable starting and extension space for the second sealing skirt, ensuring the contact angle and contact pressure between the second sealing skirt and the outer wall of the groove, thus guaranteeing a sealing effect.

[0053] The position of the second clearance groove is matched with the shape of the second sealing skirt, so that the second sealing skirt can naturally adhere to the outer wall of the groove under the action of gas pressure, forming a "pressure self-tightening" structure to ensure the sealing effect.

[0054] In some technical solutions, optionally, the second starting end of the second sealing skirt at the second clearance groove is located at the connection between the second clearance groove and the outer peripheral wall of the substrate.

[0055] In this technical solution, the mating structure of the second clearance groove and the second sealing skirt is refined.

[0056] The second starting end of the second sealing skirt is located at the connection between the second clearance groove and the outer peripheral wall of the substrate. The position and shape of the second sealing skirt are adapted to each other, and the second sealing skirt can form line contact or surface contact with the outer wall of the groove. This ensures that the second sealing skirt effectively fits the outer wall of the groove, preventing deformation due to excessive tightness or leakage due to excessive looseness. This satisfies the requirement for the floating sealing device to move relative to the groove while ensuring a good sealing effect.

[0057] The pressure in the back pressure chamber is greater than the pressure in the first chamber of the compressor. This pressure pushes the second sealing skirt outward to press tightly against the outer wall of the groove, forming a "pressure self-tightening" structure to ensure the sealing effect and reduce the probability of local stress concentration or seal failure caused by improper assembly pre-tightening force. This helps to improve the effectiveness and reliability of the seal.

[0058] In some technical solutions, optionally, the substrate is provided with a first through hole, and a part of the sealing structure passes through the first through hole; and / or one of the substrate and the sealing structure is provided with a protruding edge, and the other is provided with a recess, with the protruding edge inserted into the recess.

[0059] In this technical solution, the mating structure between the substrate and the sealing structure is refined.

[0060] The substrate has a first through hole, and a part of the sealing structure passes through the first through hole. The substrate and the sealing structure are connected by an embedded method, which increases the contact area between the substrate and the sealing structure, enhances the bonding strength between the sealing structure and the substrate, effectively prevents the sealing structure from shifting relative to the substrate, improves the stability and reliability of the overall structure, and ensures the matching dimensions between the sealing structure and the groove, providing structural support for effective sealing.

[0061] One of the substrate and the sealing structure has a protruding edge, and the other has a recessed portion, with the protruding edge inserted into the recessed portion. That is, the substrate has a protruding edge, and the sealing structure has a recessed portion, with the protruding edge inserted into the recessed portion. Alternatively, the substrate has a recessed portion, and the sealing structure has a protruding edge, with the protruding edge inserted into the recessed portion. The substrate and the sealing structure are connected through an interlocking mechanism, increasing the contact area between them, enhancing the bonding strength between the sealing structure and the substrate, effectively preventing displacement of the sealing structure relative to the substrate, improving the overall structural stability and reliability, ensuring the dimensional fit between the sealing structure and the groove, and providing structural support for effective sealing.

[0062] In some technical solutions, optionally, when the substrate is provided with a first through hole, the first through hole is located between the inner peripheral wall of the substrate and the outer peripheral wall of the substrate; the number of first through holes is multiple, and the multiple first through holes are arranged at intervals along the circumference of the first sealing skirt.

[0063] In this technical solution, the number and location of the first through holes are specified in detail.

[0064] When the substrate has a first through hole, the first through hole is located between the inner peripheral wall and the outer peripheral wall of the substrate.

[0065] There are multiple first through holes. These multiple first through holes are arranged at circumferential intervals along the first sealing skirt.

[0066] The sealing structure is embedded in each first through hole, which further increases the contact area between the substrate and the sealing structure, further enhances the bonding strength between the sealing structure and the substrate, effectively prevents the sealing structure from shifting relative to the substrate, improves the stability and reliability of the overall structure, and ensures the matching dimensions between the sealing structure and the groove, providing structural support for effective sealing.

[0067] In some technical solutions, the compressor may optionally include: a housing; a partition plate disposed within the housing, forming a first chamber and a second chamber between the partition plate and the inner surface of the housing; a compression structure disposed within the first chamber; a stationary plate having a back pressure hole; and the compression chamber communicating with the back pressure chamber through the back pressure hole. A first protrusion is provided on the side of the base plate away from the moving plate, the first protrusion surrounding the inner sidewall of the groove. The sealing structure also includes an abutment surface covering the first protrusion, wherein when the floating sealing device floats to the partition plate, the abutment surface abuts against the first protrusion and the partition plate.

[0068] In this technical solution, the compressor also includes a housing and a partition plate.

[0069] A partition plate is disposed inside the shell, and the partition plate and the inner surface of the shell enclose a first chamber and a second chamber. In other words, the partition plate divides the internal space of the shell into a first chamber and a second chamber, wherein the first chamber is a low-pressure area and the second chamber is a high-pressure area.

[0070] The compression structure is located in the first chamber, and the stationary plate is provided with a back pressure hole. The compression chamber is connected to the back pressure chamber through the back pressure hole.

[0071] The sealing structure also includes an abutment surface that covers the first boss.

[0072] When the compressor is in operation, the moving plate rotates relative to the stationary plate. The compression chamber is connected to the back pressure chamber through the back pressure hole, thereby introducing medium pressure into the back pressure chamber. Under the action of the medium pressure in the back pressure chamber, the floating sealing device moves away from the compression chamber until the contact surface of the sealing structure abuts against the first boss and the partition plate of the base plate, forming a seal, thereby realizing the establishment of the first chamber, the second chamber and the back pressure chamber.

[0073] When the compressor stops working, the moving plate stops moving, the pressure in the compression chamber becomes low pressure, and because the compression chamber is connected to the back pressure chamber, the pressure in the back pressure chamber decreases. The floating sealing device moves to the side where the compression chamber is located, the floating sealing device separates from the partition plate, and the first chamber is connected to the second chamber.

[0074] Understandably, when the floating seal device rises to the partition plate, the contact surface of the sealing structure abuts between the first boss and the partition plate. Due to the elasticity of the sealing structure, the contact between the floating seal device and the partition plate is flexible. The sealing structure can deform under the compression of the first boss to increase the contact area between the sealing structure and the partition plate, achieving surface sealing and further enhancing the effectiveness and reliability of the seal. Furthermore, the contact surface of the sealing structure abutting between the first boss and the partition plate reduces wear and tear on both the floating seal device and the partition plate, thus extending the compressor's service life.

[0075] In some technical solutions, optionally, the compressor further includes: a bracket disposed in the first chamber, with the compression structure located between the partition plate and the bracket, the bracket having a second boss and a third boss, the third boss surrounding the second boss, the second boss being used to support the moving plate; multiple connecting structures located on the periphery of the moving plate, the multiple connecting structures being arranged at intervals along the circumference of the moving plate, the connecting structures including: a fastener, the stationary plate having a second through hole, the first part of the fastener being connected to the bracket, the second part of the fastener passing through the second through hole; a guide cylinder, the guide cylinder being located between the fastener and the hole wall of the second through hole, the first end of the guide cylinder abutting against the third boss; and a gasket abutting between the second end of the guide cylinder and the periphery of the fastener.

[0076] In this technical solution, the compressor also includes a bracket and multiple connecting structures. Any one of the multiple connecting structures is located on the periphery of the moving disc, and the multiple connecting structures are arranged at intervals along the circumference of the moving disc. Each connecting structure includes a fastener, a guide cylinder, and a gasket.

[0077] The connecting structure is used to connect the compression structure and the bracket. Specifically, the second boss is used to support the moving disc, the first part of the fastener is connected to the bracket, the second part of the fastener passes through the second through hole of the stationary disc, the guide cylinder is located between the wall of the fastener and the second through hole, the first end of the guide cylinder abuts against the third boss, and the gasket abuts between the second end of the guide cylinder and the perimeter of the fastener, so as to meet the usage requirements of assembling the compression structure and the bracket together through the connecting structure.

[0078] In some technical solutions, optionally, the outer peripheral wall of the stationary disk has a protrusion, and a second through hole penetrates the protrusion along the axial direction of the moving disk, and the second through hole is clearance-fitted with the guide cylinder; along the axial direction of the moving disk, the distance from the second end of the guide cylinder to the side of the second protrusion facing the moving disk is greater than the distance from the side of the protrusion facing the gasket to the side of the second protrusion facing the moving disk.

[0079] In this technical solution, the outer peripheral wall of the stationary disk has a protrusion. Along the radial direction of the moving disk, the protrusion extends out of the outer peripheral wall of the moving disk. The protrusion serves as the carrier of the second through hole. Specifically, the second through hole passes through the protrusion along the axial direction of the moving disk. The protrusion is used to cooperate with the connecting structure.

[0080] Specifically, the second through hole is clearance-fitted with the guide cylinder. Along the axial direction of the moving disc, the distance from the second end of the guide cylinder to the side of the second protrusion facing the moving disc is greater than the distance from the side of the protrusion facing the gasket to the side of the second protrusion facing the moving disc. In other words, the stationary disc can move relative to the connecting structure in the axial direction of the moving disc. Thus, under liquid or harsh operating conditions, the stationary disc can be separated and depressurized or avoid obstacles in the axial direction of the moving disc, thereby protecting the stationary disc.

[0081] In some technical solutions, optionally, the stationary disc includes: a stationary disc body, a recessed platform on the side of the stationary disc body away from the moving disc, the stationary disc body forming part of the cavity wall of the compression chamber, and a second sealing skirt abutting against the platform wall of the recessed platform; an inner pressure plate, disposed on the recessed platform, a groove being formed between the inner pressure plate and the recessed platform, and a first sealing skirt abutting against the inner pressure plate.

[0082] In this technical solution, the stationary disc includes a stationary disc body and an inner pressure plate.

[0083] The stationary disc body forms part of the cavity wall of the compression chamber; that is, the compression chamber is enclosed between the stationary disc body and the moving disc.

[0084] A recessed platform is provided on the side of the stationary disc body away from the moving disc. The recessed platform is used to accommodate the inner pressure plate. Specifically, a groove is formed between the inner pressure plate and the recessed platform. The second sealing skirt abuts against the wall of the recessed platform, and the first sealing skirt abuts against the inner pressure plate. While ensuring the effective matching dimensions of the stationary disc, the moving disc, and the floating sealing device, the machining difficulty of the stationary disc can be reduced, which helps to reduce the machining steps of the stationary disc and thus helps to reduce the production cost of the product.

[0085] In some technical solutions, the inner pressure plate and the stationary disc body can optionally be an integrated structure.

[0086] In this technical solution, the internal pressure plate and the stationary disc body are integrated into a single structure. This design eliminates the assembly process between the internal pressure plate and the stationary disc body, thus simplifying the assembly and subsequent disassembly of the stationary disc. This improves the assembly and disassembly efficiency of the compressor, thereby reducing its production and maintenance costs. Furthermore, the integrated structure of the internal pressure plate and the stationary disc body ensures the dimensional accuracy requirements of the compression structure and the floating seal device.

[0087] In some technical solutions, the inner pressure plate can optionally be detachably connected to the stationary disc body.

[0088] In this technical solution, the connection method between the inner pressure plate and the stationary disc body includes any one or a combination of the following: snap-fit, screw connection, magnetic attraction, and fastening connection by fasteners (such as screws, bolts, or rivets). Specifically, the disassembly and assembly of the inner pressure plate and the stationary disc body, as well as the installation position of the inner pressure plate relative to the stationary disc body, can be determined according to the actual situation, thus adapting to the usage requirements of different compression structures. The product has strong adaptability and improves its performance.

[0089] The second aspect of this application provides a refrigeration device, comprising: the compressor described in the first aspect.

[0090] The refrigeration equipment provided in this application includes a compressor as described in the first aspect, and therefore has all the beneficial effects of the compressor, which will not be described in detail here.

[0091] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0092] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0093] Figure 1 A partial structural schematic diagram of a compressor according to an embodiment of this application is shown;

[0094] Figure 2 A schematic diagram of the first part of the substrate structure according to the first embodiment of this application is shown;

[0095] Figure 3 A schematic diagram of the second part of the substrate structure according to the first embodiment of this application is shown;

[0096] Figure 4 A schematic diagram of the first part of the structure of a floating sealing device according to an embodiment of this application is shown;

[0097] Figure 5 A schematic diagram of the second part of the floating sealing device according to an embodiment of this application is shown;

[0098] Figure 6 A partial structural schematic diagram of a static disk according to an embodiment of this application is shown;

[0099] Figure 7 A schematic diagram of the structure of a bracket according to an embodiment of this application is shown;

[0100] Figure 8 A partial structural schematic diagram of the substrate according to the second embodiment of this application is shown;

[0101] Figure 9 A partial structural schematic diagram of the substrate according to the third embodiment of this application is shown.

[0102] Figure label:

[0103] 10 Compressor, 100 Compression structure, 110 Stationary plate, 111 Groove, 112 Outer wall, 113 Inner wall, 114 Back pressure hole, 115 Second through hole, 116 Outer peripheral wall of stationary plate, 117 Protrusion, 118 Stationary plate body, 119 Inner pressure plate, 120 Countersunk platform, 121 Scroll gear, 130 Moving plate, 140 Compression chamber, 200 Floating sealing device, 210 Base plate, 211 Inner peripheral wall of base plate, 212 First clearance groove, 213 First groove wall, 214 Second groove wall, 215 Second clearance groove, 216 Outer peripheral wall of base plate, 217 First through hole, 218 First boss, 220 Sealing structure, 221 First sealing skirt, 222 Second sealing... Skirt, 223 First starting end, 224 Second starting end, 225 Abutting surface, 230 Protruding edge, 240 Recess, 250 Inner peripheral wall of floating sealing device, 260 Outer peripheral wall of floating sealing device, 270 First end face, 280 Second end face, 300 Back pressure cavity, 400 Housing, 410 Cover plate, 420 Housing body, 500 Dividing plate, 610 First chamber, 620 Second chamber, 700 Bracket, 710 Second boss, 720 Third boss, 800 Connecting structure, 810 Fastener, 812 Surrounding edge, 820 Guide tube, 822 First end of guide tube, 824 Second end of guide tube, 830 Gasket, 910 First gap, 920 Second gap. Detailed Implementation

[0104] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. 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.

[0105] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0106] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0107] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0108] The following is combined with Figures 1 to 9 The present invention describes a compressor 10 and a refrigeration device according to an embodiment of the present invention.

[0109] like Figure 1 , Figure 4 and Figure 5 As shown, the compressor 10 according to some embodiments of the present invention includes: a compression structure 100, which includes a stationary disc 110 and a moving disc 130, forming a compression cavity 140 between the stationary disc 110 and the moving disc 130; a groove 111 is provided on the side of the stationary disc 110 away from the moving disc 130; along the radial direction of the moving disc 130, the inner wall of the groove 111 includes an inner side wall 113 and an outer side wall 112; and a floating sealing device 200, which is movably disposed in the groove 111. A back pressure cavity 300 is formed between the device 200 and the inner wall of the groove 111. The back pressure cavity 300 can communicate with the compression cavity 140. The floating sealing device 200 includes: a substrate 210; a sealing structure 220, which covers at least a portion of the substrate 210. The sealing structure 220 includes a first sealing skirt 221 and a second sealing skirt 222. The first sealing skirt 221 abuts against the inner sidewall 113 of the groove 111, and the second sealing skirt 222 abuts against the outer sidewall 112 of the groove 111.

[0110] The compressor 10 according to an embodiment of the present invention includes a compression structure 100 and a floating sealing device 200. The compression structure 100 includes a stationary disc 110 and a moving disc 130.

[0111] A compression chamber 140 is formed between the stationary disc 110 and the moving disc 130. A groove 111 is provided on the side of the stationary disc 110 away from the moving disc 130. A back pressure chamber 300 is formed between the floating sealing device 200 and the inner wall of the groove 111. The back pressure chamber 300 can communicate with the compression chamber 140.

[0112] The floating sealing device 200 is movably disposed in the groove 111, and the floating sealing device 200 can float in the groove 111 under pressure.

[0113] The inner wall of the groove 111 includes an inner sidewall 113 and an outer sidewall 112. Along the radial direction of the moving disk 130, the inner sidewall 113 and the outer sidewall 112 of the groove 111 are arranged opposite to each other.

[0114] When the compressor 10 is in operation, the moving plate 130 moves relative to the stationary plate 110, and the back pressure chamber 300 communicates with the compression chamber 140, thereby introducing medium pressure into the back pressure chamber 300. Under the action of the medium pressure in the back pressure chamber 300, the stationary plate 110 moves downward along the axial direction of the moving plate 130 to ensure the fit dimensions of the stationary plate 110 and the moving plate 130. At the same time, the floating sealing device 200 floats upward along the axial direction of the moving plate 130 to a first position. When the floating sealing device 200 is in the first position, it abuts against the partition plate 500 of the compressor 10 to form a seal. Specifically, the first sealing skirt 221 abuts against the inner sidewall 113 of the groove 111, achieving sealing of the high-pressure area (i.e., the second chamber 620 of the compressor 10) and the medium-pressure area (i.e., the back pressure chamber 300 of the compressor 10) under high pressure. The second sealing skirt 222 abuts against the outer wall 112 of the groove 111, thereby achieving sealing of the medium-pressure area (i.e., the back pressure chamber 300 of the compressor 10) and the low-pressure area (the first chamber 610 of the compressor 10) under medium pressure.

[0115] When the compressor 10 stops working, the moving plate 130 stops moving, and the floating sealing device 200 moves to the second position in the direction of the moving plate 130. The floating sealing device 200 separates from the partition plate 500, and the high-pressure area and the low-pressure area are connected.

[0116] The floating sealing device 200 includes a base plate 210 and a sealing structure 220. The sealing structure 220 covers at least a portion of the base plate 210, that is, the sealing structure 220 covers a portion of the outer side of the base plate 210, or the sealing structure 220 completely covers the outer side of the base plate 210. The sealing structure 220 is used to cooperate with the inner wall of the groove 111 and the partition plate 500 of the compressor 10. Specifically, the sealing structure 220 includes a first sealing skirt 221 and a second sealing skirt 222. The first sealing skirt 221 is used to abut against the inner sidewall 113 of the groove 111, and the second sealing skirt 222 is used to abut against the outer sidewall 112 of the groove 111, thereby achieving sealing between the high-pressure area and the medium-pressure area, as well as sealing between the medium-pressure area and the low-pressure area, when the compressor 10 is in operation. The sealing structure 220 covers at least a portion of the substrate 210. Compared to the related technology where the inner and outer sealing lips are clamped between the upper and lower pressure plates by riveting, the position of the first sealing skirt 221 and the second sealing skirt 222 is not limited by whether the riveting pressure is balanced. The sealing of the high-pressure zone and the medium-pressure zone, as well as the sealing of the medium-pressure zone and the low-pressure zone, is not limited by whether the inner and outer sealing lips are evenly fitted with the upper and lower pressure plates. It can ensure the positional relationship of the first sealing skirt 221 and the second sealing skirt 222, and can ensure the mating dimensions of the first sealing skirt 221 and the inner sidewall 113 of the groove 111, and can ensure the mating dimensions of the second sealing skirt 222 and the outer sidewall 112 of the groove 111. The sealing structure 220 uses its own external structure to achieve the sealing of the high-pressure zone and the medium-pressure zone, as well as the sealing between the medium-pressure zone and the low-pressure zone. In this way, the problem of gas leakage can be effectively solved, the effectiveness and feasibility of the sealing can be guaranteed, and a reliable structural support can be provided to ensure the energy efficiency and operational stability of the compressor 10.

[0117] In addition, the sealing structure 220 covers at least a portion of the substrate 210. Compared with the related technology of clamping the inner sealing lip and the outer sealing lip between the upper pressure plate and the lower pressure plate by riveting, the disassembly and assembly process of the compression structure 100 and the floating sealing device 200 is simplified, the disassembly and assembly process of the compressor 10 is simplified, the assembly and disassembly efficiency of the compressor 10 is improved, and the production and maintenance costs of the compressor 10 can be reduced.

[0118] It is understandable that the sealing structure 220 covers the substrate 210, and the substrate 210 serves as the skeleton supporting the sealing structure 220, thus having the function of supporting the sealing structure 220.

[0119] According to some embodiments of the present invention, the substrate 210 and the sealing structure 220 are an integral structure.

[0120] Specifically, the mating structure of the substrate 210 and the sealing structure 220 is refined, with the substrate 210 and the sealing structure 220 forming an integral structure. This structure eliminates the assembly process of the substrate 210 and the sealing structure 220, thus simplifying the assembly and subsequent disassembly of the floating sealing device 200. This improves the assembly and disassembly efficiency of the compressor 10, thereby reducing the production and maintenance costs of the compressor 10. Furthermore, the integral structure of the substrate 210 and the sealing structure 220 ensures the dimensional accuracy requirements of the assembly of the compression structure 100 and the floating sealing device 200, effectively solving the problem of gas leakage and providing reliable structural support for ensuring the energy efficiency and operational stability of the compressor 10.

[0121] According to some embodiments of the present invention, the substrate 210 and the sealing structure 220 are detachably connected.

[0122] Specifically, the connection method between the substrate 210 and the sealing structure 220 includes any one or a combination of the following: snap-fit, screw connection, magnetic attraction, and fastening connection by fasteners (such as screws, bolts, or rivets). Specifically, the assembly and disassembly of the substrate 210 and the sealing structure 220, as well as the installation position of the sealing structure 220 relative to the substrate 210, can be determined according to actual conditions, thus adapting to the usage requirements of different models of floating sealing devices 200. This results in strong product adaptability and improved product performance.

[0123] According to some embodiments of the present invention, the sealing structure 220 is injection molded onto the substrate 210.

[0124] Specifically, the mating structure of the sealing structure 220 and the substrate 210 is refined. Specifically, the sealing structure 220 is injection molded onto the substrate 210; that is, the sealing structure 220 and the substrate 210 are formed by injection molding. This simplifies the assembly and subsequent disassembly of the floating sealing device 200, improving the assembly and disassembly efficiency of the compressor 10, and thus reducing the production and maintenance costs of the compressor 10. Furthermore, the injection molding of the sealing structure 220 onto the substrate 210 ensures the dimensional accuracy requirements of the assembly of the compression structure 100 and the floating sealing device 200, effectively solving the problem of gas leakage and providing reliable structural support for ensuring the energy efficiency and operational stability of the compressor 10.

[0125] According to some embodiments of the present invention, the sealing structure 220 completely covers the substrate 210.

[0126] Specifically, the mating structure of the sealing structure 220 and the substrate 210 is refined. Specifically, the sealing structure 220 completely covers the substrate 210. That is, the outer side of each part of the substrate 210 is covered by the sealing structure 220, so that the floating sealing device 200 can effectively cooperate with the groove wall of the groove 111 through the sealing structure 220.

[0127] According to some embodiments of the present invention, such as Figure 1 and Figure 4 As shown, the inner peripheral wall 211 of the substrate is provided with a first clearance groove 212. The first clearance groove 212 and the first sealing skirt 221 are both arranged around the inner sidewall 113 of the groove 111. The first sealing skirt 221 extends obliquely from the first clearance groove 212 in a direction away from the compression cavity 140.

[0128] Specifically, the structure of the first sealing skirt 221 is refined.

[0129] The substrate 210 has an inner peripheral wall and an outer peripheral wall. Specifically, the substrate 210 is cylindrical. The inner peripheral wall 211 of the substrate is provided with a first clearance groove 212, which surrounds the inner sidewall 113 of the groove 111. A first sealing skirt 221 surrounds the inner sidewall 113 of the groove 111.

[0130] The first sealing skirt 221 extends obliquely from the first clearance groove 212 in a direction away from the compression chamber 140. That is, the first part of the first sealing skirt 221 is located inside the first clearance groove 212, the second part of the first sealing skirt 221 extends obliquely out of the first clearance groove 212, and the part of the first sealing skirt 221 outside the first clearance groove 212 abuts against the inner wall 113 of the groove 111. Specifically, the area enclosed by the inner contour line of the side end face of the first sealing skirt 221 facing the moving disk 130 is larger than the area enclosed by the inner contour line of the side end face of the first sealing skirt 221 away from the moving disk 130.

[0131] It is understandable that the pressure in the back pressure chamber 300 is less than the pressure in the second chamber 620 of the compressor 10. The first sealing skirt 221 extends obliquely upward along the axial direction of the moving plate 130. The pressure difference between the back pressure chamber 300 and the second chamber 620 is matched with the extension direction of the first sealing skirt 221, so that the first sealing skirt 221 can fit tightly against the inner wall 113 of the groove 111, ensuring the sealing between the back pressure chamber 300 and the second chamber 620.

[0132] According to some embodiments of the present invention, such as Figure 1 and Figure 4As shown, along the axial direction of the moving disk 130, the depth of the first clearance groove 212 is greater than the height of the first sealing skirt 221; the width of the first clearance groove 212 in the radial direction of the moving disk 130 is greater than the thickness of the first sealing skirt 221; the side end face of the floating sealing device 200 facing the moving disk 130 is the first end face 270; the portion of the inner peripheral wall 250 of the floating sealing device located between the first sealing skirt 221 and the first end face 270 has a first gap 910 with the inner side wall 113 of the groove 111, and the value of the first gap 910 is less than the thickness of the first sealing skirt 221.

[0133] Specifically, the mating structure of the first clearance groove 212 and the first sealing skirt 221 is refined.

[0134] Along the axial direction of the moving disk 130, the depth of the first clearance groove 212 is greater than the height of the first sealing skirt 221. That is, the depth of the first clearance groove 212 in the axial direction of the moving disk 130 is greater than the height of the first sealing skirt 221 in the axial direction of the moving disk 130.

[0135] The width of the first clearance groove 212 in the radial direction of the moving disk 130 is greater than the thickness of the first sealing skirt 221. Wherein, as... Figure 4 As shown, the thickness of the first sealing skirt 221 is d1.

[0136] The first part of the first sealing skirt 221 is located inside the first clearance groove 212, and the second part of the first sealing skirt 221 is located outside the first clearance groove 212. By limiting the relationship between the depth of the first clearance groove 212 and the height of the first sealing skirt 221, and limiting the relationship between the width of the first clearance groove 212 and the thickness of the first sealing skirt 221, the first clearance groove 212 provides clearance space for the deformation of the first sealing skirt 221, ensuring that the first sealing skirt 221 has sufficient clearance space. While meeting the usage requirements of the floating sealing device 200 moving relative to the groove 111 under pressure, it can also meet the usage requirements of the first sealing skirt 221 effectively abutting against the inner wall 113 of the groove 111, thereby meeting the sealing requirements between the back pressure chamber 300 and the second chamber 620 when the compressor 10 is in working state.

[0137] The side face of the floating sealing device 200 facing the moving plate 130 is designated as the first end face 270. The portion of the inner peripheral wall 250 of the floating sealing device located between the first sealing skirt 221 and the first end face 270 has a first gap 910 with the inner sidewall 113 of the groove 111. The value of the first gap 910 is less than the thickness of the first sealing skirt 221. By defining the relationship between the value of the first gap 910 and the thickness of the first sealing skirt 221, the effectiveness and reliability of the seal can be ensured while meeting the usage requirements of allowing the floating sealing device 200 to move relative to the groove 111.

[0138] It is understandable that the first sealing skirt 221 has a certain elasticity, and the first sealing skirt 221 can deform when the floating sealing device 200 moves relative to the groove 111 so as to fit tightly against the inner wall 113 of the groove 111.

[0139] According to some embodiments of the present invention, such as Figure 2 As shown, along the axial direction of the moving disk 130, the groove wall of the first clearance groove 212 includes a first groove wall 213 and a second groove wall 214. The first groove wall 213 is located between the second groove wall 214 and the moving disk 130. The first sealing skirt 221 has a first starting end 223 at the first clearance groove 212 that is closer to the first groove wall 213 than the second groove wall 214.

[0140] Specifically, the mating structure of the first clearance groove 212 and the first sealing skirt 221 is refined.

[0141] Along the axial direction of the moving disk 130, the groove wall of the first clearance groove 212 includes a first groove wall 213 and a second groove wall 214. The first groove wall 213 and the second groove wall 214 are arranged opposite to each other. Specifically, the first groove wall 213 is located between the second groove wall 214 and the moving disk 130.

[0142] The first starting end 223 of the first sealing skirt 221 at the first clearance groove 212 is closer to the first groove wall 213 than the second groove wall 214. That is, along the axial direction of the moving disk 130, the distance from the first starting end 223 of the first sealing skirt 221 to the first groove wall 213 is less than the distance from the first starting end 223 of the first sealing skirt 221 to the second groove wall 214. In other words, the first starting end 223 of the first sealing skirt 221 at the first clearance groove 212 is closer to the moving disk 130. When the compressor 10 is in operation, the first sealing skirt 221 is more likely to generate effective elastic deformation, and the first sealing ring can adapt its shape according to the shape of the inner wall 113 of the groove 111. The first sealing skirt 221 can fit tightly against the inner wall 113 of the groove 111 at a more reasonable angle and shape, providing contact pressure and sealing between the first sealing skirt 221 and the inner wall 113 of the groove 111, which can ensure effective sealing between the back pressure chamber 300 and the second chamber 620.

[0143] In addition, the first starting end 223 of the first sealing skirt 221 at the first relief groove 212 is closer to the first groove wall 213 than the second groove wall 214. Under the action of pressure difference, when the first sealing skirt 221 contacts the inner side wall 113 of the groove 111, it can form a sealing surface that transitions from the inside to the outside, from tight to smooth, which can achieve progressive sealing, reduce local stress concentration, and help improve the effectiveness and reliability of the seal.

[0144] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the substrate 210 is provided with a second clearance groove 215. At least a portion of the second clearance groove 215 is located on the outer peripheral wall 216 of the substrate. The second clearance groove 215 and the second sealing skirt 222 are both arranged around the inner sidewall 113 of the groove 111. The second sealing skirt 222 extends obliquely from the second clearance groove 215 toward the compression cavity 140.

[0145] Specifically, the structure of the second sealing skirt 222 is refined.

[0146] The substrate 210 has an inner peripheral wall and an outer peripheral wall. Specifically, the substrate 210 is cylindrical. The substrate 210 is provided with a second clearance groove 215. At least a portion of the second clearance groove 215 is located on the outer peripheral wall 216 of the substrate. That is, a portion of the second clearance groove 215 is located on the outer peripheral wall 216 of the substrate, or the entire second clearance groove 215 is located on the outer peripheral wall 216 of the substrate.

[0147] The second clearance groove 215 and the second sealing skirt 222 are both arranged around the inner sidewall 113 of the groove 111. That is, the second clearance groove 215 is arranged around the inner sidewall 113 of the groove 111, and the second sealing skirt 222 is arranged around the inner sidewall 113 of the groove 111.

[0148] The second sealing skirt 222 extends obliquely out of the second clearance groove 215 towards the compression chamber 140. That is, the first part of the second sealing skirt 222 is located within the second clearance groove 215, the second part of the second sealing skirt 222 extends obliquely out of the second clearance groove 215, and the portion of the second sealing skirt 222 outside the second clearance groove 215 abuts against the outer wall 112 of the groove 111. Specifically, the area enclosed by the inner contour line of the side end face of the second sealing skirt 222 facing the moving disk 130 is larger than the area enclosed by the inner contour line of the side end face of the second sealing skirt 222 facing away from the moving disk 130.

[0149] It is understandable that the pressure in the back pressure chamber 300 is greater than the pressure in the first chamber 610 of the compressor 10. The second sealing skirt 222 extends obliquely downward along the axial direction of the moving plate 130. The pressure difference between the back pressure chamber 300 and the first chamber 610 is matched with the extension direction of the second sealing skirt 222, so that the second sealing skirt 222 can fit tightly against the outer wall 112 of the groove 111, ensuring the sealing between the back pressure chamber 300 and the first chamber 610.

[0150] According to some embodiments of the present invention, such as Figure 1 and Figure 4As shown, along the axial direction of the moving disk 130, the depth of the second clearance groove 215 is greater than the height of the second sealing skirt 222; the width of the second clearance groove 215 in the radial direction of the moving disk 130 is greater than the thickness of the second sealing skirt 222; the side end face of the floating sealing device 200 facing away from the moving disk 130 is the second end face 280; the portion of the outer peripheral wall 260 of the floating sealing device located between the second sealing skirt 222 and the second end face 280 has a second gap 920 with the outer side wall 112 of the groove 111, and the value of the second gap 920 is less than the thickness of the second sealing skirt 222.

[0151] Specifically, the mating structure of the second clearance groove 215 and the second sealing skirt 222 is refined.

[0152] Along the axial direction of the moving disk 130, the depth of the second clearance groove 215 is greater than the height of the second sealing skirt 222. That is, the depth of the second clearance groove 215 in the axial direction of the moving disk 130 is greater than the height of the second sealing skirt 222 in the axial direction of the moving disk 130.

[0153] The width of the second clearance groove 215 in the radial direction of the moving plate 130 is greater than the thickness of the second sealing skirt 222. For example, Figure 4 As shown, the thickness of the first sealing skirt 221 is d2.

[0154] The first part of the second sealing skirt 222 is located inside the second clearance groove 215, and the second part of the second sealing skirt 222 is located outside the second clearance groove 215. By limiting the relationship between the depth of the second clearance groove 215 and the height of the second sealing skirt 222, and limiting the relationship between the width of the second clearance groove 215 and the thickness of the second sealing skirt 222, the second clearance groove 215 provides clearance space for the deformation of the second sealing skirt 222, ensuring that the second sealing skirt 222 has sufficient clearance space. This satisfies the requirement that the floating sealing device 200 can move relative to the groove 111 under pressure, while also satisfying the requirement that the second sealing skirt 222 can effectively abut against the outer wall 112 of the groove 111. In this way, the sealing between the back pressure chamber 300 and the first chamber 610 can be satisfied when the compressor 10 is in operation.

[0155] The side of the floating sealing device 200 facing away from the moving plate 130 is designated as the second end face 280. The portion of the outer peripheral wall 260 of the floating sealing device located between the second sealing skirt 222 and the second end face 280 has a second gap 920 with the outer side wall 112 of the groove 111. The value of the second gap 920 is less than the thickness of the second sealing skirt 222. By limiting the relationship between the value of the second gap 920 and the thickness of the second sealing skirt 222, the effectiveness and reliability of the seal can be ensured while meeting the usage requirements of allowing the floating sealing device 200 to move relative to the groove 111.

[0156] It is understandable that the second sealing skirt 222 has a certain degree of elasticity, and the second sealing skirt 222 can deform when the floating sealing device 200 moves relative to the groove 111 so as to fit tightly against the outer wall 112 of the groove 111.

[0157] According to some embodiments of the present invention, when a portion of the second clearance groove 215 is located on the outer peripheral wall 216 of the substrate, another portion of the second clearance groove 215 is located on the side end face of the substrate 210 facing the moving disk 130.

[0158] Specifically, with a portion of the second clearance groove 215 located on the outer peripheral wall 216 of the substrate, the other portion of the second clearance groove 215 is located on the side end face of the substrate 210 facing the moving disk 130. This can be understood as the second clearance groove 215 being located at the junction of the outer peripheral wall 216 of the substrate and the side end face of the substrate 210 facing the moving disk 130. The second clearance groove 215 provides reasonable starting and extension space for the second sealing skirt 222, ensuring the contact angle and contact pressure between the second sealing skirt 222 and the outer side wall 112 of the groove 111, thus guaranteeing a sealing effect.

[0159] The position of the second clearance groove 215 is adapted to the shape of the second sealing skirt 222, so that the second sealing skirt 222 can naturally adhere to the outer side wall 112 of the groove 111 under the action of gas pressure, forming a "pressure self-tightening" structure to ensure the sealing effect.

[0160] According to some embodiments of the present invention, such as Figure 4 As shown, the second sealing skirt 222 has a second starting end 224 at the second clearance groove 215, located at the connection between the second clearance groove 215 and the outer peripheral wall 216 of the substrate.

[0161] Specifically, the mating structure of the second clearance groove 215 and the second sealing skirt 222 is refined.

[0162] The second sealing skirt 222's second starting end 224 at the second clearance groove 215 is located at the connection between the second clearance groove 215 and the outer peripheral wall 216 of the substrate. The position and shape of the second sealing skirt 222 are adapted to each other. The second sealing skirt 222 can form line contact or surface contact with the outer wall 112 of the groove 111, ensuring that the second sealing skirt 222 effectively fits the outer wall 112 of the groove 111. The second sealing skirt 222 will not be too tight and deformed, nor will it be too loose and leak air. While meeting the usage requirements of the floating sealing device 200 being able to move relative to the groove 111, the sealing effect is guaranteed.

[0163] The pressure in the back pressure chamber 300 is greater than the pressure in the first chamber 610 of the compressor 10. The pressure will push the second sealing skirt 222 to press against the outer side wall 112 of the groove 111, forming a "pressure self-tightening" structure to ensure the sealing effect and reduce the probability of local stress concentration or sealing failure caused by improper assembly pre-tightening force, which is conducive to improving the effectiveness and reliability of the seal.

[0164] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the substrate 210 has a first through hole 217, and a portion of the sealing structure 220 passes through the first through hole 217; and / or, as Figure 8 and Figure 9 As shown, one of the substrate 210 and the sealing structure 220 is provided with a protruding edge 230, and the other is provided with a recess 240, with the protruding edge 230 inserted into the recess 240.

[0165] Specifically, the mating structure of the substrate 210 and the sealing structure 220 is refined.

[0166] The substrate 210 is provided with a first through hole 217, and a part of the sealing structure 220 passes through the first through hole 217. The substrate 210 and the sealing structure 220 are connected by an embedded manner, which increases the contact area between the substrate 210 and the sealing structure 220, enhances the bonding strength between the sealing structure 220 and the substrate 210, effectively prevents the sealing structure 220 from shifting relative to the substrate 210, improves the stability and reliability of the overall structure, and ensures the matching dimensions between the sealing structure 220 and the groove 111, providing structural support for effective sealing.

[0167] One of the substrate 210 and the sealing structure 220 has a protruding edge 230, and the other has a recess 240, with the protruding edge 230 inserted into the recess 240. That is, the substrate 210 has a protruding edge 230, and the sealing structure 220 has a recess 240, with the protruding edge 230 inserted into the recess 240. Alternatively, the substrate 210 has a recess 240, and the sealing structure 220 has a protruding edge 230, with the protruding edge 230 inserted into the recess 240. The substrate 210 and the sealing structure 220 are connected by an interlocking mechanism, increasing the contact area between them and enhancing the bonding strength. This effectively prevents the sealing structure 220 from shifting relative to the substrate 210, improving the overall stability and reliability of the structure. It also ensures the proper fit between the sealing structure 220 and the groove 111, providing structural support for effective sealing.

[0168] According to some embodiments of the present invention, such as Figure 2 and Figure 3As shown, when the substrate 210 is provided with a first through hole 217, the first through hole 217 is located between the inner peripheral wall 211 and the outer peripheral wall 216 of the substrate; there are multiple first through holes 217, and the multiple first through holes 217 are arranged circumferentially along the first sealing skirt 221.

[0169] Specifically, the number and location of the first through holes 217 are refined.

[0170] When the substrate 210 is provided with a first through hole 217, the first through hole 217 is located between the inner peripheral wall 211 of the substrate and the outer peripheral wall 216 of the substrate.

[0171] There are multiple first through holes 217. The multiple first through holes 217 are arranged at intervals along the circumference of the first sealing skirt 221.

[0172] The sealing structure 220 is embedded in each first through hole 217, which further increases the contact area between the substrate 210 and the sealing structure 220, further enhances the bonding strength between the sealing structure 220 and the substrate 210, effectively prevents the sealing structure 220 from shifting relative to the substrate 210, improves the stability and reliability of the overall structure, and ensures the matching dimensions between the sealing structure 220 and the groove 111, providing structural support for effective sealing.

[0173] In other embodiments, there are multiple protrusions 230 and multiple recesses 240, with each protrusion 230 cooperating with one recess 240; that is, multiple protrusions 230 and multiple recesses 240 are matched one-to-one. The protrusions 230 are arranged at circumferential intervals along the first sealing skirt 221, which further increases the contact area between the substrate 210 and the sealing structure 220, further enhancing the bonding strength between the sealing structure 220 and the substrate 210. This effectively prevents the sealing structure 220 from shifting relative to the substrate 210, improves the stability and reliability of the overall structure, and ensures the mating dimensions of the sealing structure 220 and the groove 111, providing structural support for effective sealing.

[0174] According to some embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the compressor 10 further includes: a housing 400; a partition plate 500 disposed within the housing 400, forming a first chamber 610 and a second chamber 620 between the partition plate 500 and the inner surface of the housing 400; a compression structure 100 disposed within the first chamber 610; a stationary plate 110 having a back pressure hole 114; and a compression chamber 140 communicating with a back pressure chamber 300 through the back pressure hole 114. A first boss 218 is provided on the side of the base plate 210 away from the moving plate 130, the first boss 218 surrounding the inner sidewall 113 of the groove 111. The sealing structure 220 further includes an abutment surface 225 covering the first boss 218. When the floating sealing device 200 floats to the partition plate 500, the abutment surface 225 abuts against the first boss 218 and the partition plate 500.

[0175] Specifically, the compressor 10 also includes a housing 400 and a partition plate 500.

[0176] A partition plate 500 is disposed inside the housing 400. The partition plate 500 and the inner surface of the housing 400 enclose a first chamber 610 and a second chamber 620. In other words, the partition plate 500 divides the internal space of the housing 400 into a first chamber 610 and a second chamber 620, wherein the first chamber 610 is a low-pressure area and the second chamber 620 is a high-pressure area.

[0177] The compression structure 100 is located in the first chamber 610, the stationary plate 110 is provided with a back pressure hole 114, and the compression chamber 140 is connected to the back pressure chamber 300 through the back pressure hole 114.

[0178] The sealing structure 220 also includes an abutment surface 225 covering the first boss 218.

[0179] When the compressor 10 is in operation, the moving plate 130 rotates relative to the stationary plate 110. The compression chamber 140 is connected to the back pressure chamber 300 through the back pressure hole 114, thereby introducing medium pressure into the back pressure chamber 300. Under the action of the medium pressure in the back pressure chamber 300, the floating sealing device 200 moves away from the compression chamber 140 until the abutment surface 225 of the sealing structure 220 abuts between the first boss 218 of the base plate 210 and the partition plate 500, forming a seal, thereby realizing the establishment of the first chamber 610, the second chamber 620 and the back pressure chamber 300.

[0180] When the compressor 10 stops working, the moving plate 130 stops moving, the pressure in the compression chamber 140 becomes low pressure, and since the compression chamber 140 is connected to the back pressure chamber 300, the pressure in the back pressure chamber 300 decreases, the floating sealing device 200 moves to the side where the compression chamber 140 is located, the floating sealing device 200 separates from the partition plate 500, and the first chamber 610 is connected to the second chamber 620.

[0181] Understandably, when the floating sealing device 200 floats to the partition plate 500, the contact surface 225 of the sealing structure 220 abuts against the first boss 218 and the partition plate 500. Because the sealing structure 220 has a certain degree of elasticity, the contact between the floating sealing device 200 and the partition plate 500 is a flexible contact. The sealing structure 220 can deform under the compression of the first boss 218 to increase the contact area between the sealing structure 220 and the partition plate 500, achieving surface sealing and further enhancing the effectiveness and reliability of the seal. Furthermore, the contact surface 225 of the sealing structure 220 abuts against the first boss 218 and the partition plate 500, reducing wear and tear on the floating sealing device 200 and the partition plate 500, which helps extend the service life of the compressor 10.

[0182] According to some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the compressor 10 further includes: a support 700 disposed within the first chamber 610; a compression structure 100 located between the partition plate 500 and the support 700; the support 700 having a second boss 710 and a third boss 720, the third boss 720 surrounding the second boss 710; and the second boss 710 supporting the movable disk 130; and a plurality of connecting structures 800 located around the movable disk 130, the plurality of connecting structures 800 being arranged at intervals along the circumference of the movable disk 130. The connection structure 800 includes: a fastener 810, a stationary plate 110 having a second through hole 115, a first part of the fastener 810 being connected to the bracket 700, and a second part of the fastener 810 passing through the second through hole 115; a guide cylinder 820, the guide cylinder 820 being located between the fastener 810 and the hole wall of the second through hole 115, and a first end 822 of the guide cylinder abutting against a third boss 720; and a gasket 830, abutting between the second end 824 of the guide cylinder and the periphery 812 of the fastener 810.

[0183] Specifically, the compressor 10 also includes a bracket 700 and a plurality of connecting structures 800, any one of which is located on the periphery of the moving plate 130, and the plurality of connecting structures 800 are arranged at circumferential intervals along the moving plate 130. Each connecting structure 800 includes a fastener 810, a guide cylinder 820, and a gasket 830.

[0184] The connecting structure 800 is used to connect the compression structure 100 and the bracket 700. Specifically, the second boss 710 is used to support the moving plate 130, the first part of the fastener 810 is connected to the bracket 700, the second part of the fastener 810 passes through the second through hole 115 of the stationary plate 110, the guide cylinder 820 is located between the fastener 810 and the hole wall of the second through hole 115, the first end 822 of the guide cylinder abuts against the third boss 720, and the gasket 830 abuts between the second end 824 of the guide cylinder and the perimeter 812 of the fastener 810, so as to meet the usage requirements of assembling the compression structure 100 and the bracket 700 together through the connecting structure 800.

[0185] For example, the first part of the fastener 810 is screwed to the bracket 700. The fastener 810 includes screws, bolts, rivets, etc., which are not listed here.

[0186] For example, the first part of the fastener 810 snaps into the bracket 700.

[0187] For example, the first part of the fastener 810 is magnetically connected to the bracket 700.

[0188] According to some embodiments of the present invention, such as Figure 6 As shown, the outer peripheral wall 116 of the stationary disk has a protrusion 117, and a second through hole 115 passes through the protrusion 117 along the axial direction of the moving disk 130. The second through hole 115 is clearance-fitted with the guide cylinder 820. Along the axial direction of the moving disk 130, the distance from the second end 824 of the guide cylinder to the side of the second protrusion 710 facing the moving disk 130 is greater than the distance from the side of the protrusion 117 facing the gasket 830 to the side of the second protrusion 710 facing the moving disk 130.

[0189] Specifically, the outer peripheral wall 116 of the stationary disk has a protrusion 117 extending out of the outer peripheral wall of the moving disk 130 along the radial direction of the moving disk 130. The protrusion 117 serves as a carrier for the second through hole 115. Specifically, the second through hole 115 passes through the protrusion 117 along the axial direction of the moving disk 130. The protrusion 117 is used to cooperate with the connecting structure 800.

[0190] Specifically, the second through hole 115 is clearance-fitted with the guide cylinder 820. Along the axial direction of the moving disk 130, the distance from the second end 824 of the guide cylinder to the side of the second protrusion 710 facing the moving disk 130 is greater than the distance from the side of the protrusion 117 facing the gasket 830 to the side of the second protrusion 710 facing the moving disk 130. In other words, the stationary disk 110 can move relative to the connecting structure 800 in the axial direction of the moving disk 130. Thus, under liquid or harsh operating conditions, the stationary disk 110 can be separated and depressurized or avoid obstacles in the axial direction of the moving disk 130, thereby protecting the stationary disk 110.

[0191] For example, the number of protrusions 117 is the same as the number of connecting structures 800, and each protrusion 117 mates with one connecting structure 800.

[0192] For example, the number of protrusions 117 is less than the number of connecting structures 800, and each protrusion 117 mates with at least one connecting structure 800.

[0193] According to some embodiments of the present invention, such as Figure 1 and Figure 6 As shown, the stationary disc 110 includes: a stationary disc body 118, a recessed platform 120 on the side of the stationary disc body 118 away from the moving disc 130, the stationary disc body 118 forming part of the cavity wall of the compression cavity 140, and a second sealing skirt 222 abutting against the platform wall of the recessed platform 120; an inner pressure plate 119, disposed on the recessed platform 120, a groove 111 is formed between the inner pressure plate 119 and the recessed platform 120, and a first sealing skirt 221 abutting against the inner pressure plate 119.

[0194] Specifically, the static plate 110 includes a static plate body 118 and an inner pressure plate 119.

[0195] The stationary disk body 118 forms part of the cavity wall of the compression cavity 140, that is, the compression cavity 140 is enclosed between the stationary disk body 118 and the moving disk 130.

[0196] A recessed platform 120 is provided on the side of the stationary plate body 118 opposite to the moving plate 130. The recessed platform 120 is used to accommodate the inner pressure plate 119. Specifically, a groove 111 is formed between the inner pressure plate 119 and the recessed platform 120. The second sealing skirt 222 abuts against the wall of the recessed platform 120, and the first sealing skirt 221 abuts against the inner pressure plate 119. While ensuring the effective matching dimensions of the stationary plate 110, the moving plate 130, and the floating sealing device 200, the processing difficulty of the stationary plate 110 can be reduced, which helps to reduce the processing steps of the stationary plate 110, and thus helps to reduce the production cost of the product.

[0197] According to some embodiments of the present invention, the inner pressure plate 119 and the stationary plate body 118 are an integral structure.

[0198] Specifically, the inner pressure plate 119 and the stationary disc body 118 are an integral structure. This structure eliminates the assembly process of the inner pressure plate 119 and the stationary disc body 118, thus simplifying the assembly and subsequent disassembly of the stationary disc 110. This improves the assembly and disassembly efficiency of the compressor 10, thereby reducing the production and maintenance costs of the compressor 10. Furthermore, the integral structure of the inner pressure plate 119 and the stationary disc body 118 ensures the dimensional accuracy requirements of the compression structure 100 and the floating seal device 200 during assembly.

[0199] According to some embodiments of the present invention, the inner pressure plate 119 and the stationary plate body 118 are detachably connected.

[0200] Specifically, the connection method between the inner pressure plate 119 and the stationary disc body 118 includes any one or a combination of the following: snap-fit, screw connection, magnetic attraction, and fastening connection by fasteners (such as screws, bolts, or rivets). Specifically, the disassembly and assembly of the inner pressure plate 119 and the stationary disc body 118, as well as the installation position of the inner pressure plate 119 relative to the stationary disc body 118, can be determined according to actual conditions, thus adapting to the usage requirements of different models of compression structures 100. This enhances the product's adaptability and improves its performance.

[0201] A refrigeration device according to some embodiments of the present invention includes: the compressor 10 in any of the above embodiments.

[0202] The refrigeration equipment provided in this application includes the compressor 10 as described in any of the above embodiments, and therefore has all the beneficial effects of the compressor 10, which will not be described in detail here.

[0203] For example, refrigeration equipment includes air conditioners, refrigerators, or freezers.

[0204] Exemplarily, the floating sealing device 200 of this application includes a substrate 210 and a sealing structure 220, the sealing structure 220 covering at least a portion of the substrate 210. For example, a sealing material is laminated onto a rigid substrate 210 to form the sealing structure 220. A first sealing skirt 221 is provided on the inner side of the sealing structure 220, and a second sealing skirt 222 is provided on the outer side of the sealing structure 220. The first sealing skirt 221 and the second sealing skirt 222 cooperate for sealing between high pressure and medium pressure, and between medium pressure and low pressure. At the same time, between high pressure and low pressure, the conventional rigid-to-rigid sealing is adjusted to rigid-to-flexible sealing (that is, the abutment surface 225 of the sealing structure 220 abuts between the first boss 218 and the partition plate 500), improving the sealing effect. A first clearance groove 212 and a second clearance groove 215 are reserved on the substrate 210. The first clearance groove 212 is used to accommodate the deformed first sealing skirt 221, and the second clearance groove 215 is used to accommodate the deformed second sealing skirt 222. Meanwhile, a first through hole 217 is provided on the substrate 210, a portion of the sealing structure 220 is located in the first through hole 217, and / or one of a protrusion 230 and a recess 240 is provided on the substrate 210, and the other of a protrusion 230 and a recess 240 is provided on the sealing structure 220, with the protrusion 230 inserted into the recess 240 to enhance the adhesion of the sealing structure 220.

[0205] For example, the sealing structure 220 of this application covers at least a portion of the substrate 210, eliminating the riveting step in related technologies, removing potential risks associated with riveting, and improving production efficiency. It can also reduce the number of parts and lower product manufacturing costs.

[0206] For example, compressor 10 includes a scroll compressor. Compressor 10 includes a bracket 700, a guide cylinder 820, a gasket 830, a fastener 810, a stationary plate 110, and a moving plate 130. The bracket 700 has a second boss 710 and a third boss 720, with the third boss 720 surrounding the second boss 710. The second boss 710 is a central platform used to support the moving plate 130, and the third boss 720 is used to house the guide cylinder 820 and position the fastener 810. The guide cylinder 820 is a hollow cylinder, and the fastener 810 can pass through its center. The gasket 830 has an irregular cross-section, meaning it has an irregular shape, and is used for tooling positioning. The outer peripheral wall 116 of the stationary disk is provided with a protrusion 117, and a second through hole 115 penetrates the protrusion 117. The protrusion 117 is used for positioning the guide cylinder 820. The central part of the stationary disk 110 includes a volute tooth 121, and a back pressure hole 114 is opened in the center of the volute tooth 121. An annular groove (i.e., groove 111) is provided on the side of the stationary disk 110 away from the moving disk 130. The annular groove is used to install the floating sealing device 200. The moving disk 130 includes a base and a moving volute tooth. The base and the second boss 710 of the support 700 form an axial positioning. The moving disk 130 and the stationary disk 110 mesh with each other to achieve gas compression. The moving volute tooth is a helical blade.

[0207] For example, the compressor 10 includes a housing 400, which includes a housing body 420 and a cover plate 410. The housing body 420 is used to support the pump body and to isolate the low-pressure area from the external environment, and the cover plate 410 is used to isolate the high-pressure area from the external environment.

[0208] For example, a partition 500 is located within the housing 400 and is used to isolate high pressure and low pressure to form a high-pressure area (i.e., the second chamber 620) and a low-pressure area (i.e., the first chamber 610).

[0209] For example, the floating sealing device 200 is installed in the groove 111 on the back of the stationary plate 110, and the floating sealing device 200 and the inner wall of the groove 111 enclose a medium pressure area (i.e., the back pressure cavity 300).

[0210] For example, the floating sealing device 200 is a composite structure, which includes a substrate 210 and a sealing structure 220, wherein the sealing structure 220 covers at least a portion of the substrate 210.

[0211] For example, the substrate 210 is provided with at least one of a protruding edge 230, a recess 240 and a first through hole 217.

[0212] For example, when the compressor 10 is in operation, the second sealing skirt 222 is in close contact with the outer wall 112 of the groove 111 under medium pressure, the first sealing skirt 221 is in close contact with the inner wall 113 of the groove 111 under high pressure, and the upper end face of the floating sealing device 200 is in close contact with the partition plate 500.

[0213] For example, the inner peripheral wall 211 of the substrate is provided with a first clearance groove 212, and both the first clearance groove 212 and the first sealing skirt 221 are arranged around the inner sidewall 113 of the groove 111. Along the axial direction of the moving disk 130, the depth of the first clearance groove 212 is greater than the height of the first sealing skirt 221, and the width of the first clearance groove 212 in the radial direction of the moving disk 130 is greater than the thickness of the first sealing skirt 221. The side end face of the floating sealing device 200 facing the moving disk 130 is a first end face 270. The portion of the inner peripheral wall 250 of the floating sealing device located between the first sealing skirt 221 and the first end face 270 has a first gap 910 with the inner sidewall 113 of the groove 111, and the value of the first gap 910 is less than the thickness of the first sealing skirt 221.

[0214] For example, the substrate 210 is provided with a second clearance groove 215, at least a portion of which is located on the outer peripheral wall 216 of the substrate. Along the axial direction of the movable disk 130, the depth of the second clearance groove 215 is greater than the height of the second sealing skirt 222. The width of the second clearance groove 215 in the radial direction of the movable disk 130 is greater than the thickness of the second sealing skirt 222. The side face of the floating sealing device 200 facing away from the movable disk 130 is a second end face 280. The portion of the outer peripheral wall 260 of the floating sealing device located between the second sealing skirt 222 and the second end face 280 has a second gap 920 with the outer side wall 112 of the groove 111. The value of the second gap 920 is less than the thickness of the second sealing skirt 222.

[0215] For example, the bracket 700 is fixedly connected to the housing body 420, serving as axial support for the entire internal pump body structure. The bracket 700 includes a second boss 710 for supporting the pump body structure, and the bracket 700 also includes a third boss 720 for achieving axial flexibility.

[0216] For example, the guide cylinder 820 is a hollow cylinder. The guide cylinder 820 is installed on the third boss 720 of the bracket 700. When axial flexibility is achieved, the stationary plate 110 can run and unload along the height direction of the guide cylinder 820.

[0217] For example, the gasket 830 and the fastener 810 serve as the fastening structure for the guide tube 820. After the moving plate 130 and the stationary plate 110 are installed, the guide tube 820 is placed in the second through hole 115 of the stationary plate 110, and the gasket 830 abuts against the perimeter 812 of the guide tube 820 and the fastener 810.

[0218] For example, the stationary disk 110 includes spiral teeth 121, which are helical blades. The outer peripheral wall 116 of the stationary disk has a protrusion 117, and a second through hole 115 passes through the protrusion 117 along the axial direction of the moving disk 130. The stationary disk 110 has a groove 111 on the side away from the moving disk 130. The inner wall of the groove 111 includes an inner sidewall 113 and an outer sidewall 112. The inner sidewall 113 is an inner annular surface, and the outer sidewall 112 is an outer annular surface. The stationary disk 110 includes a stationary disk body 118 and an inner pressure plate 119. The stationary disk body 118 has a recessed platform 120 on the side away from the moving disk 130. The inner pressure plate 119 is disposed on the recessed platform 120. The groove 111 is enclosed between the inner pressure plate 119 and the recessed platform 120. The recessed platform 120 forms the outer sidewall 112 of the groove 111, and the inner pressure plate 119 forms the inner sidewall 113 of the groove 111. The inner pressure plate 119 can be integrally cast with the stationary disc body 118. The vortex teeth 121 of the stationary disc 110 cooperate with the moving vortex teeth of the moving disc 130 to achieve gas compression during operation. Along the axial direction of the moving disc 130, the distance from the second end 824 of the guide cylinder to the side of the second protrusion 710 facing the moving disc 130 is greater than the distance from the side of the protrusion 117 facing the gasket 830 to the side of the second protrusion 710 facing the moving disc 130. The gap difference is the axial flexible space of the vortex. The floating sealing device 200 is installed between the inner wall 113 and the outer wall 112 of the groove 111 on the back of the stationary disc 110. The groove 111 has an annular groove structure.

[0219] For example, the areas connected to the intake side are all low-pressure areas (i.e., the first chamber 610), and the areas connected to the exhaust side are all high-pressure areas (i.e., the second chamber 620). The back pressure hole 114 of the stationary disc 110 guides the compression pressure to the sealed back pressure cavity 300 formed by the back of the stationary disc 110 and the floating sealing device 200. The back pressure cavity 300 is a medium-pressure area. When the compressor 10 is working normally, the pressure in the medium-pressure area presses the stationary disc 110 down tightly onto the moving disc 130, and the floating sealing device 200 rises up and presses against the partition plate 500.

[0220] For example, when the compressor 10 is in operation, the medium pressure lifts the floating sealing device 200, and the upper surface of the floating sealing device 200 is covered by the sealing structure 220. The medium pressure causes the sealing structure 220 to fit tightly against the partition plate 500, achieving a flexible-against-rigid seal and isolating the high-pressure area from the low-pressure area. For example, the floating sealing device 200 relies on the second sealing skirt 222 to fit tightly against the outer wall 112 of the groove 111, achieving isolation between the medium-pressure area and the low-pressure area under medium pressure. For example, the floating sealing device 200 relies on the first sealing skirt 221 to fit tightly against the inner wall 113 of the groove 111, achieving isolation between the high-pressure area and the low-pressure area under high pressure.

[0221] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0222] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, include: A compression structure includes a stationary disc and a moving disc, with a compression cavity enclosed between the stationary disc and the moving disc. The stationary disc has a groove on the side opposite to the moving disc, and the inner wall of the groove includes an inner side wall and an outer side wall along the radial direction of the moving disc. A floating sealing device, movably disposed in the groove, wherein a back pressure cavity is enclosed between the floating sealing device and the inner wall of the groove, the back pressure cavity being able to communicate with the compression cavity, the floating sealing device comprising: substrate; A sealing structure covering at least a portion of the substrate, the sealing structure including a first sealing skirt and a second sealing skirt, the first sealing skirt abutting against the inner sidewall of the groove, and the second sealing skirt abutting against the outer sidewall of the groove.

2. The compressor according to claim 1, characterized in that, The substrate and the sealing structure are an integral structure; or The substrate and the sealing structure are detachably connected; or The sealing structure is injection molded onto the substrate; or The sealing structure completely covers the substrate.

3. The compressor according to claim 1 or 2, characterized in that, The inner peripheral wall of the substrate is provided with a first clearance groove, and the first clearance groove and the first sealing skirt are both arranged around the inner sidewall of the groove. The first sealing skirt extends obliquely from the first clearance groove in a direction away from the compression cavity.

4. The compressor according to claim 3, characterized in that, Along the axial direction of the moving disk, the depth of the first clearance groove is greater than the height of the first sealing skirt; The width of the first clearance groove in the radial direction of the moving plate is greater than the thickness of the first sealing skirt; The side of the floating sealing device facing the moving plate is the first end face; The portion of the inner peripheral wall of the floating sealing device located between the first sealing skirt and the first end face has a first gap with the inner sidewall of the groove, the value of which is less than the thickness of the first sealing skirt.

5. The compressor according to claim 3, characterized in that, Along the axial direction of the moving disk, the groove wall of the first clearance groove includes a first groove wall and a second groove wall. The first groove wall is located between the second groove wall and the moving disk. The first sealing skirt is closer to the first groove wall at its first starting end in the first clearance groove than the second groove wall.

6. The compressor according to claim 1 or 2, characterized in that, The substrate is provided with a second clearance groove, at least a portion of which is located on the outer peripheral wall of the substrate. Both the second clearance groove and the second sealing skirt are arranged around the inner sidewall of the groove. The second sealing skirt extends obliquely from the second clearance groove toward the compression cavity.

7. The compressor according to claim 6, characterized in that, Along the axial direction of the moving disk, the depth of the second clearance groove is greater than the height of the second sealing skirt; The width of the second clearance groove in the radial direction of the moving plate is greater than the thickness of the second sealing skirt; The side of the floating sealing device facing away from the moving plate is the second end face; The portion of the outer peripheral wall of the floating sealing device located between the second sealing skirt and the second end face has a second gap with the outer side wall of the groove, the value of which is less than the thickness of the second sealing skirt.

8. The compressor according to claim 6, characterized in that, With a portion of the second clearance groove located on the outer peripheral wall of the substrate, the other portion of the second clearance groove is located on the side end face of the substrate facing the moving disk.

9. The compressor according to claim 8, characterized in that, The second starting end of the second sealing skirt at the second clearance groove is located at the connection between the second clearance groove and the outer peripheral wall of the substrate.

10. The compressor according to claim 1 or 2, characterized in that, The substrate is provided with a first through hole, and a portion of the sealing structure passes through the first through hole; and / or One of the substrate and the sealing structure has a convex edge, and the other has a recess, with the convex edge inserted into the recess.

11. The compressor according to claim 10, characterized in that, When the substrate is provided with the first through hole, the first through hole is located between the inner peripheral wall of the substrate and the outer peripheral wall of the substrate; The number of first through holes is multiple, and the multiple first through holes are arranged at intervals along the circumference of the first sealing skirt.

12. The compressor according to claim 1 or 2, characterized in that, Also includes: case; A partition plate is disposed inside the housing, and a first chamber and a second chamber are enclosed between the partition plate and the inner surface of the housing. The compression structure is disposed in the first chamber, and the stationary plate is provided with a back pressure hole. The compression chamber communicates with the back pressure chamber through the back pressure hole. The substrate has a first protrusion on the side opposite to the moving plate. The first protrusion is arranged around the inner sidewall of the groove. The sealing structure also includes an abutment surface covering the first protrusion. When the floating sealing device floats to the partition plate, the abutment surface abuts between the first protrusion and the partition plate.

13. The compressor according to claim 12, characterized in that, Also includes: A bracket is disposed in the first chamber, and the compression structure is located between the partition plate and the bracket. The bracket is provided with a second boss and a third boss, the third boss being arranged around the second boss, and the second boss being used to support the moving plate. Multiple connecting structures are located around the periphery of the moving disk, and the multiple connecting structures are arranged at intervals along the circumference of the moving disk. Each connecting structure includes: The fastener has a second through hole, the first part of the fastener is connected to the bracket, and the second part of the fastener passes through the second through hole; A guide tube is located between the fastener and the wall of the second through hole, and the first end of the guide tube abuts against the third boss. A gasket is placed between the second end of the guide tube and the perimeter of the fastener.

14. The compressor according to claim 13, characterized in that, The outer peripheral wall of the stationary disk has a protrusion, and the second through hole penetrates the protrusion along the axial direction of the moving disk. The second through hole is in clearance fit with the guide cylinder. Along the axial direction of the moving disk, the distance from the second end of the guide cylinder to the side of the second protrusion facing the moving disk is greater than the distance from the side of the protrusion facing the gasket to the side of the second protrusion facing the moving disk.

15. The compressor according to claim 1 or 2, characterized in that, The static disk includes: The stationary disc body has a recessed platform on the side opposite to the moving disc, and the stationary disc body forms part of the cavity wall of the compression chamber. The second sealing skirt abuts against the platform wall of the recessed platform. An inner pressure plate is disposed on the recessed platform, and the groove is formed between the inner pressure plate and the recessed platform. The first sealing skirt abuts against the inner pressure plate.

16. The compressor according to claim 15, characterized in that, The inner pressure plate and the stationary disc body are an integral structure; or The inner pressure plate is detachably connected to the static plate body.

17. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 16.

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