Compressor and refrigeration equipment

Abstract

The utility model provides a compressor and refrigeration equipment, the compressor comprises: a compression assembly, the compression assembly comprises a compression cavity and a pressure relief hole, the pressure relief hole is communicated with the compression cavity; the back pressure plate is connected with the compression assembly, and a pressure relief cavity is formed by the back pressure plate and the compression assembly; the sealing gasket is arranged between the back pressure plate and the compression assembly and is used for sealing the pressure relief cavity; the pressure relief valve assembly is arranged between the back pressure plate and the compression assembly and located in the pressure relief cavity, the pressure relief valve assembly can open or close the pressure relief hole so that the pressure relief hole can be communicated with or cut off from the pressure relief cavity, and at least one part of the pressure relief valve assembly is connected with the sealing gasket, that is, the pressure relief valve assembly can open or close the pressure relief hole. At least part of the pressure relief valve assembly is integrated on the sealing gasket used for sealing the pressure relief cavity, so that the number of parts of the compressor can be remarkably reduced while the advanced exhaust function of the compressor is achieved, the installation steps are simplified, the assembly efficiency of the compressor is improved, and the production cost of the compressor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of compressor equipment technology, and more specifically, to a compressor and refrigeration equipment. Background Technology

[0002] Currently, in related technologies, scroll compressors have a pressure relief valve assembly installed in the recessed area on the back of the stationary scroll plate to allow for early exhaust of the compression chamber.

[0003] The pressure relief valve assembly includes a pressure relief valve component to reduce overcompression loss and a bypass valve component to reduce displacement and cooling capacity. In addition, a back pressure plate assembly needs to be installed in the recessed area on the back of the stationary scroll. The assembly involves many parts and the installation steps are complicated. Utility Model Content

[0004] The embodiments of this utility model are intended to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, a first aspect of the embodiments of this utility model provides a compressor.

[0006] A second aspect of the present invention provides a refrigeration device.

[0007] In view of the above, according to a first aspect of the present invention, a compressor is provided, the compressor comprising: a compression assembly including a compression chamber and a pressure relief port, the pressure relief port communicating with the compression chamber; a back pressure plate connected to the compression assembly and forming a pressure relief chamber with the compression assembly; a sealing gasket disposed between the back pressure plate and the compression assembly for sealing the pressure relief chamber; and a pressure relief valve assembly disposed between the back pressure plate and the compression assembly and located within the pressure relief chamber, the pressure relief valve assembly being capable of opening or closing the pressure relief port to communicate with or shut off the pressure relief chamber, at least a portion of the pressure relief valve assembly being connected to the sealing gasket.

[0008] The compressor provided in this embodiment of the utility model includes a compression assembly, a back pressure plate, a sealing gasket, and a pressure relief valve assembly. Specifically, the compression assembly includes a compression chamber. Optionally, the compression assembly includes a stationary scroll and a moving scroll, which form the compression chamber. The stationary scroll is provided with an exhaust port, which communicates with the compression chamber. Specifically, during the operation of the compressor, the moving scroll rotates relative to the stationary scroll to compress the gas in the compression chamber. When the pressure of the compressed gas reaches the exhaust pressure, it is discharged from the exhaust port.

[0009] The back pressure plate is connected to the compression assembly, and the back pressure plate and the compression assembly form a pressure relief chamber. Optionally, the pressure relief chamber includes an exhaust chamber and / or a bypass chamber. Since the pressure relief valve assembly is located inside the pressure relief chamber and can open or close the pressure relief port, that is, the pressure relief valve assembly can control the connection or disconnection between the compression chamber and the pressure relief chamber.

[0010] Specifically, the pressure relief chamber is the exhaust chamber, and the pressure relief valve assembly is located within the exhaust chamber. During compressor operation, when the gas pressure in the compression chamber is high, the pressure relief valve assembly can be opened to prevent overcompression. At this time, the compression chamber is connected to the exhaust chamber through the pressure relief hole, allowing some gas to be discharged in advance. This achieves the purpose of early exhaust from the compression chamber and reducing overcompression losses. In other words, the pressure relief valve assembly is a pressure relief valve component used to reduce overcompression losses.

[0011] The pressure relief chamber is a bypass chamber, and the pressure relief valve assembly is located within it. When the compressor operates in bypass mode, the pressure relief valve assembly opens the pressure relief port, allowing the compression chamber to connect with the bypass chamber through the port. Since the bypass chamber is connected to the compressor's suction chamber at this time, some gas is discharged prematurely, reducing displacement, cooling capacity, and energy consumption, thus achieving the compressor's variable capacity function. In other words, the pressure relief valve assembly is a bypass valve component used to reduce displacement; therefore, the pressure relief port is also a bypass port at this time.

[0012] The pressure relief valve assembly in related technologies generally includes a pressure relief valve plate (pressure relief valve or bypass valve), a limiter, and screws. The pressure relief valve plate and the limiter are fixed to the stationary plate by screws. The pressure relief valve plate is sandwiched between the limiter and the stationary plate. The limiter is used to limit the opening angle of the pressure relief valve plate, thereby preventing the pressure relief valve plate from bending excessively and breaking, which helps to extend the service life of the pressure relief valve plate.

[0013] Since at least part of the pressure relief valve assembly is connected to the gasket, that is, at least part of the pressure relief valve assembly is integrated into the gasket used to seal the pressure relief chamber, it is possible to significantly reduce the number of compressor parts and simplify the installation steps while realizing the compressor's early discharge function, thereby improving the compressor's assembly efficiency and reducing the compressor's production cost.

[0014] Moreover, during installation, there is no need to position the pressure relief valve assembly. After connecting the sealing gasket to the back pressure plate and the compression assembly, the pressure relief valve assembly can be fixedly installed, improving the assembly accuracy of the pressure relief valve assembly. This effectively solves the problem of misalignment of the pressure relief valve assembly due to the difficulty in positioning it during installation, avoids poor sealing when the pressure relief valve assembly closes the pressure relief hole, and improves sealing reliability.

[0015] In some technical solutions, optionally, the pressure relief valve assembly includes a valve plate and a limiting member, wherein the valve plate is connected to a sealing gasket, the valve plate is capable of opening or closing the pressure relief hole, and the limiting member is located on the side of the valve plate away from the compression chamber. Along the axial direction of the back pressure plate, at least a portion of the valve plate is disposed opposite to the limiting member.

[0016] In this technical solution, because the sealing gasket and valve plate are connected—that is, the valve plate is integrated into the sealing gasket used to seal the pressure relief chamber—the number of compressor parts can be significantly reduced and the installation steps simplified while achieving the compressor's early discharge function. Furthermore, during installation, there is no need to position the valve plate; simply connecting the sealing gasket to the back pressure plate and compression assembly allows for the valve plate to be fixedly installed, improving assembly accuracy and effectively solving the problem of valve plate misalignment caused by difficult installation positioning. This also avoids poor sealing when the valve plate closes the pressure relief hole, thus improving sealing reliability.

[0017] In addition, it avoids the problem of excessive resistance to valve opening when the compressor discharges prematurely due to misalignment between the valve plate and the limiting component, thus ensuring the efficiency of the compressor.

[0018] In some technical solutions, the valve plate may optionally include a valve body and a connecting part, wherein the valve body is disposed opposite to the pressure relief hole along the axial direction of the back pressure plate for opening or closing the pressure relief hole, one end of the connecting part is connected to the valve body, and the other end of the connecting part is connected to a sealing gasket.

[0019] In this technical solution, since the connecting part is connected to the sealing gasket, that is, the valve plate is integrated on the sealing gasket used to seal the pressure relief chamber, the number of compressor parts can be reduced, the installation steps can be simplified, and the assembly accuracy of the valve plate can be improved.

[0020] In some technical solutions, the connecting part may optionally include a first connecting arm and a second connecting arm, wherein the first connecting arm is connected to a sealing gasket, and the second connecting arm is located between the first connecting arm and the valve body, and is connected to the valve body and the first connecting arm respectively; the width of the second connecting arm is smaller than the width of the first connecting arm.

[0021] In this technical solution, because the first connecting arm connects to the sealing gasket, and the width of the first connecting arm is greater than the width of the second connecting arm—that is, the width of the connecting part near the root of the valve plate is larger—it ensures that the valve plate will not break during repeated movements to open or close the pressure relief hole, thus extending the service life of the valve plate. Furthermore, the width of the connecting part near the head of the valve plate is smaller, which reduces the opening resistance when the valve plate opens the pressure relief hole, thus ensuring compressor efficiency.

[0022] In some technical solutions, optionally, one end of the valve plate is connected to the sealing gasket, and the other end of the valve plate has a gap with the sealing gasket.

[0023] In this technical solution, since one end of the valve plate is connected to the sealing gasket and there is a gap between the other end and the sealing gasket, that is, the other end of the valve plate is a cantilever end. This allows the valve plate to be integrated into the sealing gasket to reduce compressor parts and improve valve plate assembly accuracy, while ensuring effective movement of the valve plate. It also avoids interference between the valve plate and the sealing gasket, which would prevent the valve plate from effectively opening or sealing the pressure relief hole, thus improving the reliability of the compressor.

[0024] In some technical solutions, the valve plate and the sealing gasket can optionally be an integral structure.

[0025] In this technical solution, since the sealing gasket and valve plate are integrated into one structure, it is understood that this integrated structure has excellent mechanical properties. Therefore, it can improve the connection strength between the sealing gasket and the valve plate, ensuring the installation reliability of the valve plate. Moreover, the integrated structure can further reduce the number of compressor parts, simplify the installation steps, improve the assembly accuracy of the valve plate, enhance the sealing reliability of the valve plate to the pressure relief hole, and also help reduce the production cost of the compressor.

[0026] In some technical solutions, the limiting element is optionally located on the back pressure plate; or the limiting element is connected to at least one of the valve plate and the compression assembly.

[0027] In this technical solution, the limiting component is connected to at least one of the valve plate and the compression assembly. Optionally, the limiting component, the valve plate, and the stationary scroll of the compression assembly are each provided with connecting holes. Fasteners pass through the connecting holes on the limiting component, the valve plate, and the stationary scroll, respectively, to achieve the installation and fixation of the limiting component. When the valve plate opens the pressure relief hole, the limiting component can limit the valve plate to prevent excessive bending of the valve plate.

[0028] The limiting component is located on the back pressure plate. In other words, integrating the limiting component onto the back pressure plate helps further reduce the number of compressor parts, simplifies installation steps, and thus lowers compressor production costs. Furthermore, during installation, no auxiliary tools are needed to position the valve plate and limiting component. Simply placing the sealing gasket between the back pressure plate and the compression assembly, and aligning the valve plate with the limiting component, ensures accurate valve plate positioning, avoids misalignment, and guarantees valve plate assembly precision and sealing reliability.

[0029] In some technical solutions, optionally, the back pressure plate includes a first plate and a second plate, wherein the second plate is disposed on the side of the first plate facing the compression chamber, a sealing gasket is disposed between the second plate and the compression assembly, the second plate divides the space between the first plate and the compression assembly into two pressure relief chambers, and the sealing gasket is located between the two pressure relief chambers; a pressure relief valve assembly is located in at least one pressure relief chamber for opening or closing at least one pressure relief hole.

[0030] In this technical solution, the back pressure plate is defined to include a first plate and a second plate. Specifically, the second plate is disposed on the side of the first plate facing the compression chamber, and the second plate divides the space between the first plate and the compression assembly into two pressure relief chambers.

[0031] The pressure relief valve assembly is located within at least one pressure relief chamber and is used to open or seal the corresponding pressure relief port. Since at least a portion of the pressure relief valve assembly is connected to a sealing gasket—that is, at least a portion of the pressure relief valve assembly is integrated onto the sealing gasket used to seal the pressure relief chamber—the number of compressor parts can be significantly reduced, installation steps simplified, and thus, the compressor's assembly efficiency improved and production costs reduced. Furthermore, it also helps improve the assembly accuracy of the pressure relief valve assembly, effectively solving the problem of misaligned installation of the pressure relief valve assembly due to difficulties in positioning it.

[0032] In some technical solutions, optionally, the two pressure relief chambers include an exhaust chamber and a bypass chamber, with the bypass chamber located outside the exhaust chamber along the radial direction of the back pressure plate; the pressure relief hole includes a first pressure relief hole communicating with the bypass chamber, and the outer peripheral surface of the sealing gasket extends toward the bypass chamber to form a first valve plate, which opens or closes the first pressure relief hole.

[0033] In this technical solution, two pressure relief chambers are defined, including an exhaust chamber and a bypass chamber. A first pressure relief orifice is defined, which communicates with the bypass chamber. A first valve plate extending outward from the sealing gasket can open or close the first pressure relief orifice; that is, the valve plate includes a first valve plate. Specifically, when the compressor operates in bypass mode, the first valve plate opens the first pressure relief orifice, allowing the compression chamber to communicate with the bypass chamber through the first pressure relief orifice. Since the bypass chamber is connected to the compressor's suction chamber at this time, some gas is discharged in advance, achieving the purpose of reducing displacement, cooling capacity, and energy consumption, thus realizing the compressor's variable capacity function. It can be understood that at this time, the first pressure relief orifice is also a bypass orifice, and the first valve plate is a bypass valve plate.

[0034] In some technical solutions, the pressure relief hole may optionally include a second pressure relief hole communicating with the exhaust chamber, wherein the inner circumferential surface of the sealing gasket extends toward the exhaust chamber to form a second valve plate, and the second valve plate opens or closes the second pressure relief hole.

[0035] In this technical solution, the pressure relief hole also includes a second pressure relief hole, which communicates with the exhaust chamber. A second valve plate extending inward from the sealing gasket can open or close the second pressure relief hole; that is, the valve plate also includes a second valve plate. Specifically, during compressor operation, when the gas pressure in the compression chamber is high, to avoid overcompression, the second valve plate opens the second pressure relief hole. At this time, the compression chamber communicates with the exhaust chamber through the second pressure relief hole, allowing some gas to be discharged in advance, thereby achieving the purpose of early exhaust from the compression chamber and reducing overcompression losses.

[0036] In some technical solutions, the back pressure plate may optionally include an exhaust channel that communicates with an exhaust chamber; along the axial direction of the back pressure plate, at least a portion of the second valve plate is offset from the exhaust channel.

[0037] In this technical solution, since at least part of the second valve plate and the exhaust passage are offset axially from the back pressure plate, the number of parts can be reduced and the installation of the second valve plate can be avoided without affecting the exhaust of the compressor, which helps to ensure the stability and reliability of the compressor operation.

[0038] In some technical solutions, optionally, the compression assembly includes a moving scroll and a stationary scroll, wherein the stationary scroll and the moving scroll form a compression chamber, the back pressure plate is connected to the side of the stationary scroll away from the moving scroll and forms a pressure relief chamber with the stationary scroll, the stationary scroll is provided with a pressure relief hole, and the pressure relief valve assembly and the sealing gasket are respectively disposed between the back pressure plate and the stationary scroll.

[0039] In this technical solution, the back pressure plate is located on the side of the stationary volute away from the moving volute. Optionally, the stationary volute also has a recess, and the back pressure plate is located within the recess. The back pressure plate and the stationary volute form a pressure relief chamber, that is, the back pressure plate and the stationary volute can form an exhaust chamber and a bypass chamber. The sealing gasket is located between the exhaust chamber and the bypass chamber to achieve a sealed separation between the exhaust chamber and the bypass chamber.

[0040] According to a second aspect of this utility model, a refrigeration device is provided, including a compressor as provided in any of the above technical solutions, and thus possesses all the beneficial technical effects of the compressor, which will not be repeated here.

[0041] Additional aspects and advantages of the present invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0042] 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:

[0043] Figure 1 A partial structural schematic diagram of a compressor according to an embodiment of the present invention is shown;

[0044] Figure 2 A schematic diagram of the structure of a sealing gasket according to an embodiment of the present invention is shown;

[0045] Figure 3 One of the structural schematic diagrams of a sealing gasket and a back pressure plate according to an embodiment of the present invention is shown;

[0046] Figure 4 A second schematic diagram of the structure of a sealing gasket and a back pressure plate according to an embodiment of the present invention is shown;

[0047] Figure 5 The third schematic diagram shows the structure of a sealing gasket and a back pressure plate according to an embodiment of the present invention;

[0048] Figure 6 A schematic diagram of the structure of a back pressure plate according to an embodiment of the present invention is shown;

[0049] Figure 7 A schematic diagram of the structure of a compressor according to an embodiment of the present invention is shown.

[0050] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0051] 100 Compressor, 110 Compression assembly, 111 Compression chamber, 112 Pressure relief hole, 113 Moving scroll, 114 Stationary scroll, 115 First pressure relief hole, 116 Second pressure relief hole, 120 Back pressure plate, 121 First plate, 122 Second plate, 123 Exhaust passage, 130 Sealing gasket, 140 Pressure relief chamber, 141 Bypass chamber, 142 Exhaust chamber, 150 Pressure relief valve assembly, 151 Valve plate, 152 Limiting element, 153 Valve body, 154 Connecting part, 155 First connecting arm, 156 Second connecting arm, 157 First valve plate, 158 Second valve plate, 160 Intake chamber, 170 Float assembly, 180 Clearance. Detailed Implementation

[0052] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0053] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0054] The following reference Figures 1 to 7 This invention describes a compressor 100 and a refrigeration device provided according to some embodiments of the present invention.

[0055] In one embodiment according to this application, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a compressor 100 is proposed, comprising: a compression assembly 110, the compression assembly 110 including a compression chamber 111 and a pressure relief hole 112, the pressure relief hole 112 communicating with the compression chamber 111; a back pressure plate 120 connected to the compression assembly 110 and forming a pressure relief chamber 140 with the compression assembly 110; a sealing gasket 130 disposed between the back pressure plate 120 and the compression assembly 110 for sealing the pressure relief chamber 140; and a pressure relief valve assembly 150 disposed between the back pressure plate 120 and the compression assembly 110 and located within the pressure relief chamber 140, the pressure relief valve assembly 150 being capable of opening or closing the pressure relief hole 112 to allow the pressure relief hole 112 to communicate with or be shut off from the pressure relief chamber 140, and at least a portion of the pressure relief valve assembly 150 being connected to the sealing gasket 130.

[0056] The compressor 100 provided in this embodiment of the present invention includes a compression assembly 110, a back pressure plate 120, a sealing gasket 130, and a pressure relief valve assembly 150. Specifically, the compression assembly 110 includes a compression chamber 111. Optionally, the compression assembly 110 includes a stationary scroll 114 and a moving scroll 113, which form the compression chamber 111. The stationary scroll 114 is provided with an exhaust port, which communicates with the compression chamber 111. Specifically, during the operation of the compressor 100, the moving scroll 113 rotates relative to the stationary scroll 114 to compress the gas in the compression chamber 111. When the pressure of the compressed gas reaches the exhaust pressure, it is discharged from the exhaust port.

[0057] The back pressure plate 120 is connected to the compression assembly 110, and the back pressure plate 120 and the compression assembly 110 form a pressure relief chamber 140. Optionally, the pressure relief chamber 140 includes an exhaust chamber 142 and / or a bypass chamber 141. Since the pressure relief valve assembly 150 is located within the pressure relief chamber 140, and the pressure relief valve assembly 150 can open or close the pressure relief port 112, that is, the pressure relief valve assembly 150 can control the connection or disconnection between the compression chamber 111 and the pressure relief chamber 140.

[0058] Specifically, the pressure relief chamber 140 is the exhaust chamber 142, and the pressure relief valve assembly 150 is located inside the exhaust chamber 142. During the operation of the compressor 100, when the gas pressure in the compression chamber 111 is high, the pressure relief valve assembly 150 can be opened to avoid overcompression. At this time, the compression chamber 111 is connected to the exhaust chamber 142 through the pressure relief hole 112, allowing some gas to be discharged in advance through the pressure relief hole 112, thereby achieving the purpose of early exhaust of the compression chamber 111 and reducing overcompression losses. That is, the pressure relief valve assembly 150 is a pressure relief valve component used to reduce overcompression losses.

[0059] The pressure relief chamber 140 is a bypass chamber 141, and the pressure relief valve assembly 150 is located within the bypass chamber 141. When the compressor 100 operates in bypass mode, the pressure relief valve assembly 150 opens the pressure relief port 112, allowing the compression chamber 111 to connect with the bypass chamber 141 through the pressure relief port 112. Since the bypass chamber 141 is connected to the suction chamber 160 of the compressor 100 at this time, some gas is discharged in advance, thereby reducing displacement, cooling capacity, and energy consumption, and realizing the variable capacity function of the compressor 100. That is, the pressure relief valve assembly 150 is a bypass valve component used to reduce displacement, and it can be understood that the pressure relief port 112 is also a bypass port at this time.

[0060] The pressure relief valve assembly in related technologies generally includes a pressure relief valve plate (pressure relief valve or bypass valve), a limiter, and screws. The pressure relief valve plate and the limiter are fixed to the stationary plate by screws. The pressure relief valve plate is sandwiched between the limiter and the stationary plate. The limiter is used to limit the opening angle of the pressure relief valve plate, thereby preventing the pressure relief valve plate from bending excessively and breaking, which helps to extend the service life of the pressure relief valve plate.

[0061] Since at least part of the pressure relief valve assembly 150 is connected to the sealing gasket 130, that is, at least part of the pressure relief valve assembly 150 is integrated on the sealing gasket 130 used to seal the pressure relief chamber 140, the number of parts of the compressor 100 can be significantly reduced while realizing the early discharge function of the compressor 100, simplifying the installation steps, thereby improving the assembly efficiency of the compressor 100 and reducing the production cost of the compressor 100.

[0062] Moreover, during installation, there is no need to position the pressure relief valve assembly 150. After connecting the sealing gasket 130 to the back pressure plate 120 and the compression assembly 110, the pressure relief valve assembly 150 can be fixedly installed, improving the assembly accuracy of the pressure relief valve assembly 150. This effectively solves the problem of misalignment of the pressure relief valve assembly 150 due to the difficulty in positioning it during installation, and avoids poor sealing when the pressure relief valve assembly 150 closes the pressure relief hole 112, thus improving sealing reliability.

[0063] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the pressure relief valve assembly 150 includes a valve plate 151 and a limiting member 152, wherein the valve plate 151 is connected to the sealing gasket 130, the valve plate 151 is capable of opening or closing the pressure relief hole 112, and the limiting member 152 is located on the side of the valve plate 151 away from the compression chamber 111. Along the axial direction of the back pressure plate 120, at least a portion of the valve plate 151 is disposed opposite to the limiting member 152.

[0064] In this embodiment, the pressure relief valve assembly 150 is defined to include a valve plate 151 and a limiting member 152. Specifically, at least a portion of the valve plate 151 is axially opposite to the limiting member 152 on the back pressure plate 120. Thus, when the valve plate 151 opens the pressure relief hole 112 to achieve early exhaust, the opening angle of the valve plate 151 can be limited, preventing the valve plate 151 from bending excessively and breaking. This helps to extend the service life of the valve plate 151 and improve the reliability of the compressor 100.

[0065] Since the sealing gasket 130 and the valve plate 151 are connected, that is, the valve plate 151 is integrated into the sealing gasket 130 used to seal the pressure relief chamber 140, the number of parts of the compressor 100 can be significantly reduced while realizing the early discharge function of the compressor 100, simplifying the installation steps. Moreover, during the installation process, there is no need to position the valve plate 151. After connecting the sealing gasket 130 to the back pressure plate 120 and the compression assembly 110, the valve plate 151 can be fixedly installed, improving the assembly accuracy of the valve plate 151. This effectively solves the problem of valve plate 151 being misaligned due to the difficulty in positioning the valve plate 151 during installation, avoids poor sealing when the valve plate 151 closes the pressure relief hole 112, and improves sealing reliability.

[0066] In addition, it avoids the problem of excessive opening resistance of valve plate 151 when compressor 100 discharges prematurely due to the misalignment of valve plate 151 and limit member 152, thus ensuring the efficiency of compressor 100.

[0067] like Figure 2 As shown, in some embodiments, the valve plate 151 may optionally include a valve body 153 and a connecting portion 154, wherein the valve body 153 is disposed opposite to the pressure relief hole 112 along the axial direction of the back pressure plate 120, for opening or closing the pressure relief hole 112, one end of the connecting portion 154 is connected to the valve body 153, and the other end of the connecting portion 154 is connected to the sealing gasket 130.

[0068] In this embodiment, the valve plate 151 is defined as including a valve body 153 and a connecting portion 154. Specifically, the valve body 153 and the pressure relief hole 112 are axially opposite to each other on the back pressure plate 120. Specifically, when the gas pressure in the compression chamber 111 is high, or when the compressor 100 is running in bypass mode, the valve body 153 moves away from the pressure relief hole 112 to open the pressure relief hole 112. The compression chamber 111 communicates with the pressure relief chamber 140 through the pressure relief hole 112, thereby achieving early exhaust. When the compressor 100 finishes early exhaust, the valve body 153 seals the pressure relief hole 112, thereby cutting off the connection between the pressure relief hole 112 and the pressure relief chamber 140.

[0069] Since the connecting part 154 is connected to the sealing gasket 130, that is, the valve plate 151 is integrated on the sealing gasket 130 used to seal the pressure relief chamber 140, the number of parts of the compressor 100 can be reduced, the installation steps can be simplified, and the assembly accuracy of the valve plate 151 can be improved.

[0070] Optionally, the valve body 153 and the connecting part 154 are an integral structure.

[0071] like Figure 2 As shown, in some embodiments, optionally, the connecting portion 154 includes a first connecting arm 155 and a second connecting arm 156, wherein the first connecting arm 155 is connected to the sealing gasket 130, and the second connecting arm 156 is located between the first connecting arm 155 and the valve body 153, and is connected to the valve body 153 and the first connecting arm 155 respectively; the width of the second connecting arm 156 is smaller than the width of the first connecting arm 155.

[0072] In this embodiment, the connecting part 154 is defined to include a first connecting arm 155 and a second connecting arm 156. Specifically, the second connecting arm 156 is located between the first connecting arm 155 and the valve body 153, and one end of the second connecting arm 156 is connected to the first connecting arm 155, and the other end is connected to the valve body 153.

[0073] Because the first connecting arm 155 connects to the sealing gasket 130, and the width of the first connecting arm 155 is greater than the width of the second connecting arm 156, meaning that the connecting portion 154 is wider near the root of the valve plate 151, this ensures that the valve plate 151 will not break during repeated movements to open or close the pressure relief hole 112, thus extending the service life of the valve plate 151. Furthermore, the connecting portion 154 is narrower near the head of the valve plate 151, which reduces the opening resistance when the valve plate 151 opens the pressure relief hole 112, thus ensuring the efficiency of the compressor 100.

[0074] like Figure 2 As shown, in some embodiments, optionally, one end of the valve plate 151 is connected to the sealing gasket 130, and the other end of the valve plate 151 has a gap 180 between it and the sealing gasket 130.

[0075] In this embodiment, since one end of the valve plate 151 is connected to the sealing gasket 130 and the other end has a gap 180 with the sealing gasket 130, that is, the other end of the valve plate 151 is a cantilever end. This allows the valve plate 151 to be integrated into the sealing gasket 130 to reduce the number of compressor 100 parts and improve the assembly accuracy of the valve plate 151. At the same time, it ensures the effective movement of the valve plate 151 and avoids interference between the valve plate 151 and the sealing gasket 130, which would prevent the valve plate 151 from effectively opening or sealing the pressure relief hole 112. This is beneficial to improving the reliability of the compressor 100.

[0076] like Figure 2 As shown, in some embodiments, the valve plate 151 and the sealing gasket 130 are optionally an integral structure.

[0077] In this embodiment, since the sealing gasket 130 and the valve plate 151 are an integral structure, it is understood that the integral structure has good mechanical properties. Therefore, it can improve the connection strength between the sealing gasket 130 and the valve plate 151, ensuring the installation reliability of the valve plate 151. Moreover, the integral structure can further reduce the number of parts in the compressor 100, simplify the installation steps, improve the assembly accuracy of the valve plate 151, improve the sealing reliability of the valve plate 151 to the pressure relief hole 112, and also help reduce the production cost of the compressor 100.

[0078] In some embodiments, the limiting member 152 may be disposed on the back pressure plate 120; or the limiting member 152 may be connected to at least one of the valve plate 151 and the compression assembly 110.

[0079] In this embodiment, the limiting member 152 is connected to at least one of the valve plate 151 and the compression assembly 110. Optionally, the limiting member 152, the valve plate 151, and the stationary scroll 114 of the compression assembly 110 are respectively provided with connecting holes. Fasteners pass through the connecting holes on the limiting member 152, the valve plate 151, and the stationary scroll 114 to achieve the installation and fixation of the limiting member 152. When the valve plate 151 opens the pressure relief hole 112, the limiting member 152 can limit the valve plate 151 to prevent the valve plate 151 from bending excessively.

[0080] like Figure 6 As shown, the limiting member 152 is disposed on the back pressure plate 120. That is to say, integrating the limiting member 152 onto the back pressure plate 120 helps to further reduce the number of parts in the compressor 100, simplify the installation steps, and thus reduce the production cost of the compressor 100. Moreover, during the installation process, there is no need to use auxiliary tools to install and position the valve plate 151 and the limiting member 152. By placing the sealing gasket 130 between the back pressure plate 120 and the compression assembly 110, and aligning the valve plate 151 with the limiting member 152, accurate positioning of the valve plate 151 can be achieved, avoiding offset and ensuring the assembly accuracy and sealing reliability of the valve plate 151.

[0081] like Figure 3 , Figure 4 and Figure 6As shown, in some embodiments, optionally, the back pressure plate 120 includes a first plate 121 and a second plate 122, wherein the second plate 122 is disposed on the side of the first plate 121 facing the compression chamber 111, and a sealing gasket 130 is disposed between the second plate 122 and the compression assembly 110. The second plate 122 divides the space between the first plate 121 and the compression assembly 110 into two pressure relief chambers 140, and the sealing gasket 130 is located between the two pressure relief chambers 140. The pressure relief valve assembly 150 is located in at least one pressure relief chamber 140 and is used to open or close at least one pressure relief hole 112.

[0082] In this embodiment, the back pressure plate 120 is defined to include a first plate 121 and a second plate 122. Specifically, the second plate 122 is disposed on the side of the first plate 121 facing the compression chamber 111, and the second plate 122 divides the space between the first plate 121 and the compression assembly 110 into two pressure relief chambers 140.

[0083] The pressure relief valve assembly 150 is located within at least one pressure relief chamber 140 and is used to open or close the corresponding pressure relief port 112. Since at least a portion of the pressure relief valve assembly 150 is connected to the sealing gasket 130, that is, at least a portion of the pressure relief valve assembly 150 is integrated onto the sealing gasket 130 used to seal the pressure relief chamber 140, the number of parts in the compressor 100 can be significantly reduced, the installation steps can be simplified, and thus the assembly efficiency of the compressor 100 can be improved, and the production cost of the compressor 100 can be reduced. Furthermore, it also helps to improve the assembly accuracy of the pressure relief valve assembly 150, effectively solving the problem of misalignment of the pressure relief valve assembly 150 due to difficulties in installation and positioning.

[0084] Optionally, there are two pressure relief valve assemblies 150, each located in a separate pressure relief chamber 140, for opening or sealing the corresponding pressure relief port 112. At least a portion of each pressure relief valve assembly 150 is connected to a sealing gasket 130 to further reduce the number of components in the compressor 100.

[0085] Optionally, the first plate 121 and the second plate 122 are an integral structure.

[0086] Optionally, there are also two pressure relief holes 112, and the two pressure relief holes 112 correspond to two pressure relief chambers 140 respectively.

[0087] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, in some embodiments, optionally, the two pressure relief chambers 140 include an exhaust chamber 142 and a bypass chamber 141. Along the radial direction of the back pressure plate 120, the bypass chamber 141 is located outside the exhaust chamber 142. The pressure relief hole 112 includes a first pressure relief hole 115 communicating with the bypass chamber 141. The outer peripheral surface of the sealing gasket 130 extends toward the bypass chamber 141 to form a first valve plate 157. The first valve plate 157 opens or closes the first pressure relief hole 115.

[0088] In this embodiment, two pressure relief chambers 140 are defined, including an exhaust chamber 142 and a bypass chamber 141. A pressure relief orifice 112 includes a first pressure relief orifice 115, which communicates with the bypass chamber 141. A first valve plate 157 extending outward from the sealing gasket 130 can open or close the first pressure relief orifice 115; that is, the valve plate 151 includes the first valve plate 157. Specifically, when the compressor 100 operates in bypass mode, the first valve plate 157 opens the first pressure relief orifice 115, allowing the compression chamber 111 to communicate with the bypass chamber 141 through the first pressure relief orifice 115. Since the bypass chamber 141 is connected to the suction chamber 160 of the compressor 100 at this time, some gas is discharged in advance, achieving the purpose of reducing displacement, cooling capacity, and energy consumption, thus realizing the variable capacity function of the compressor 100. It can be understood that the first pressure relief orifice 115 is also a bypass orifice at this time, and the first valve plate 157 is a bypass valve plate.

[0089] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments, optionally, the pressure relief hole 112 further includes a second pressure relief hole 116 communicating with the exhaust chamber 142, and the inner peripheral surface of the sealing gasket 130 extends toward the exhaust chamber 142 to form a second valve plate 158, which opens or closes the second pressure relief hole 116.

[0090] In this embodiment, the pressure relief hole 112 further includes a second pressure relief hole 116, which communicates with the exhaust chamber 142. The second valve plate 158, extending inward from the sealing gasket 130, can open or close the second pressure relief hole 116; that is, the valve plate 151 also includes the second valve plate 158. Specifically, during the operation of the compressor 100, when the gas pressure in the compression chamber 111 is high, to avoid overcompression, the second valve plate 158 opens the second pressure relief hole 116. At this time, the compression chamber 111 communicates with the exhaust chamber 142 through the second pressure relief hole 116, allowing some gas to be discharged in advance through the second pressure relief hole 116, thereby achieving the purpose of early exhaust from the compression chamber 111 and reducing overcompression losses.

[0091] like Figure 3 , Figure 4 and Figure 6As shown, in some embodiments, optionally, the back pressure plate 120 includes an exhaust passage 123, which communicates with the exhaust chamber 142; along the axial direction of the back pressure plate 120, at least a portion of the second valve plate 158 is offset from the exhaust passage 123.

[0092] In this embodiment, the back pressure plate 120 is defined to include an exhaust passage 123. Specifically, the exhaust passage 123 is connected to the exhaust chamber 142. Specifically, during the operation of the compressor 100, the moving scroll 113 rotates relative to the stationary scroll 114 to compress the gas in the compression chamber 111. When the pressure of the compressed gas reaches the exhaust pressure, it is discharged from the exhaust port to the exhaust chamber 142 and then discharged through the exhaust passage 123.

[0093] Since at least part of the second valve plate 158 and the exhaust passage 123 are offset axially from the back pressure plate 120, it is possible to reduce the number of parts and avoid the second valve plate 158 being installed off-center without affecting the exhaust of the compressor 100, which helps to ensure the stability and reliability of the compressor 100 operation.

[0094] In some embodiments, optionally, either the first plate 121 or the second plate 122 is connected to the sealing gasket 130.

[0095] In this embodiment, since the sealing gasket 130 is connected to either the first plate 121 or the second plate 122, it is beneficial to improve the installation stability and reliability of the sealing gasket 130, avoid the situation where air leakage occurs between the exhaust chamber 142 and the bypass chamber 141 due to the movement of the sealing gasket 130, ensure the effective sealing between the exhaust chamber 142 and the bypass chamber 141, and further improve the reliability of the compressor 100.

[0096] like Figure 1 and Figure 7 As shown, in some embodiments, optionally, the compression assembly 110 includes a moving scroll 113 and a stationary scroll 114, wherein the stationary scroll 114 and the moving scroll 113 form a compression chamber 111, the back pressure plate 120 is connected to the side of the stationary scroll 114 away from the moving scroll 113, and forms a pressure relief chamber 140 with the stationary scroll 114, the stationary scroll 114 is provided with a pressure relief hole 112, and the pressure relief valve assembly 150 and the sealing gasket 130 are respectively disposed between the back pressure plate 120 and the stationary scroll 114.

[0097] In this embodiment, the compression assembly 110 is defined as including a moving scroll 113 and a stationary scroll 114. Specifically, the stationary scroll 114 and the moving scroll 113 form a compression chamber 111, and an exhaust port and a pressure relief hole 112 are disposed on the stationary scroll 114. The pressure relief valve assembly 150 and the sealing gasket 130 are respectively disposed between the back pressure plate 120 and the stationary scroll 114.

[0098] A back pressure plate 120 is disposed on the side of the stationary scroll 114 away from the moving scroll 113. Optionally, the stationary scroll 114 also has a recess, and the back pressure plate 120 is disposed within the recess. The back pressure plate 120 and the stationary scroll 114 form a pressure relief chamber 140, meaning the back pressure plate 120 and the stationary scroll 114 can form an exhaust chamber 142 and a bypass chamber 141. A sealing gasket 130 is located between the exhaust chamber 142 and the bypass chamber 141 to achieve a sealed separation between the exhaust chamber 142 and the bypass chamber 141. Optionally, the sealing gasket 130 is arranged around the exhaust chamber 142 to further improve the sealing performance between the exhaust chamber 142 and the bypass chamber 141, preventing gas leakage.

[0099] Optionally, the compressor 100 also includes a float assembly 170, which is disposed on the back pressure plate 120. The float assembly 170, the back pressure plate 120, and the stationary scroll 114 enclose a back pressure chamber. The back pressure chamber can communicate with the compression chamber 111, so that during the operation of the compressor 100, intermediate pressure can be introduced into the back pressure chamber. This intermediate pressure can apply an axial force to the stationary scroll 114 in the axial direction to ensure reliable meshing between the stationary scroll 114 and the moving scroll 113, prevent radial leakage between the stationary scroll 114 and the moving scroll 113, and improve the reliability of the compressor 100.

[0100] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a scroll compressor (compressor 100) is a mechanical device used to compress gas. It is usually composed of a stationary scroll assembly (stationary scroll 114) and a moving scroll component (moving scroll 113). The relative revolution of the scroll teeth forms a continuous change in the closed volume, and the volume of the compression chamber 111 becomes smaller and smaller, thereby achieving gas compression and increasing the pressure and temperature of the gas.

[0101] In related technologies, scroll compressors typically have a recessed area formed on the end face of the stationary scroll assembly, and a sealing assembly (float assembly) is disposed in the recessed area. One side of the recessed area communicates with one of the compression chambers formed between the stationary scroll assembly and the moving scroll component, while the other side cooperates with the sealing assembly (float assembly) to form a back pressure chamber that provides back pressure to the stationary scroll assembly. Typically, the back pressure plate is designed in a disc shape, with a cavity (exhaust chamber) in the middle area that forms an exhaust channel with the end face of the stationary scroll. The front side is subjected to gas back pressure, achieving axial sealing between the stationary and moving scrolls.

[0102] This application integrates the pressure relief valve plate baffle (limiting member 152) with the back pressure plate 120. Furthermore, it integrates the pressure relief valve plate (second valve plate 158), the bypass valve plate (first valve plate 157), and the back pressure plate gasket (sealing gasket 130) into a single gasket, reducing the number of parts and the cost of parts, solving the installation and positioning problem of the pressure relief valve gasket (valve plate 151) and the baffle (limiting member 152), and improving manufacturability.

[0103] Based on the positional design of the pressure relief valve (pressure relief valve assembly 150) of the stationary vortex plate (stationary vortex plate 114), the back pressure plate 120 end face is machined and modified inward to replace the pressure relief valve baffle (limiting member 152). In addition, a bypass valve plate (first valve plate 157) and a pressure relief and exhaust valve plate (second valve plate 158) are machined in the same position on the gasket (sealing gasket 130) and integrated into a single gasket.

[0104] Specifically, an integrated back pressure plate structure for a variable displacement scroll compressor (compressor 100) includes a back pressure plate assembly, a back pressure plate gasket (sealing gasket 130), and fasteners. The back pressure plate assembly includes a back pressure plate component (back pressure plate 120) and a circular sealing ring located in an outer groove, which is fixed to the concave end face of the stationary scroll 114. The back pressure plate gasket (sealing gasket 130) is fixed to the side of the back pressure plate 120 near the stationary scroll 114. The fasteners fix the back pressure plate 120 and the back pressure plate gasket (sealing gasket 130) to the end face of the stationary scroll 114.

[0105] One side of the stationary volute 114 is provided with stationary volute teeth, a pressure relief hole (second pressure relief hole 116), an exhaust hole (exhaust port), and a bypass hole (first pressure relief hole 115). A back pressure plate 120 is installed on the other side of the stationary volute teeth. The back pressure plate 120 and the stationary volute 114 define a space for the pressure relief valve plate (valve plate 151) to open or block the pressure relief hole 112. The back pressure plate 120 and the stationary volute 114 are respectively provided with connection holes for positioning fasteners to pass through. The back pressure plate 120 and the back pressure plate gasket (sealing gasket 130) are fixed to the stationary volute 114 by positioning fasteners.

[0106] A bypass cavity 141 is formed between the back side of the stationary scroll 114 and the back pressure plate 120. A bypass hole (first pressure relief hole 115) is located on the back side of the stationary scroll 114, and is associated with a variable-capacity check valve (first valve plate 157) installed on the back side of the stationary scroll 114 inside the bypass cavity 141. These devices enable the variable-volume function of the compressor 100. Specifically, when the compressor 100 is under full load (non-bypass operation), the pressure in the bypass cavity 141 is the intermediate pressure; when the compressor 100 is under half load (bypass operation), the pressure in the bypass cavity 141 is the suction pressure. A control valve (a valve structure that controls whether the bypass cavity 141 is connected to the suction cavity 160) and a discharge valve (first valve plate 157) can selectively introduce high-pressure fluid or low-pressure fluid into the bypass cavity 141.

[0107] The limiting surface (limiting member 152) is inclined away from the concave end face of the stationary volute 114 to form a movable space for the pressure relief valve plate (second valve plate 158) to move, and / or the limiting surface (limiting member 152) is inclined away from the concave end face of the stationary volute 114 to form a movable space for the pre-bypass valve plate (first valve plate 157) to move. Based on the position design of the pressure relief valve (pressure relief valve assembly 150) of the stationary volute (stationary volute 114), a pressure relief valve plate (second valve plate 158) and a bypass valve plate (first valve plate 157) are provided. There are two limiting surfaces (limiting members 152). The pressure relief valve plate (second valve plate 158) is located in the movable space formed by one of the limiting surfaces, sealing the pressure relief hole (second pressure relief hole 116). The bypass valve plate (first valve plate 157) is located in the movable space formed by the other limiting surface, sealing the bypass hole (first pressure relief hole 115).

[0108] The technical solution of this application integrates both the limiter (limiting member 152) and the pressure relief valve (valve 151) onto the back pressure plate (back pressure plate 120 and sealing gasket 130). Thus, the pressure relief valve (valve 151) is positioned on the side of the limiter (limiting member 152) away from the back pressure plate 120, meaning it is outside the limiter (limiting member 152) and not obstructed. When fixing the pressure relief valve to the limiter, it can be easily installed and positioned so that the pressure relief valve is accurately installed on the limiter without misalignment. This ensures the assembly accuracy and sealing reliability of the pressure relief valve (pressure relief valve assembly 150), and also improves assembly efficiency and reduces production costs.

[0109] That is, by machining and modifying the back pressure plate 120 and the gasket (sealing gasket 130), the original design of the pressure relief gasket and exhaust valve assembly is eliminated. The aim is to make it easier to install and position the pressure relief valve and bypass valve, and to ensure the assembly accuracy and sealing reliability of the pressure relief valve and bypass valve.

[0110] According to a second aspect of this utility model, a refrigeration device is provided, including a compressor 100 as provided in any of the above embodiments, thus possessing all the beneficial technical effects of the compressor 100, which will not be repeated here. Optionally, the refrigeration device includes an air conditioner, a refrigerator, or a freezer.

[0111] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0112] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which 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.

[0113] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compressor, characterized in that, include: A compression assembly, the compression assembly including a compression chamber and a pressure relief hole, the pressure relief hole communicating with the compression chamber; A back pressure plate is connected to the compression assembly and forms a pressure relief chamber with the compression assembly; A sealing gasket is disposed between the back pressure plate and the compression assembly to seal the pressure relief chamber; A pressure relief valve assembly is disposed between the back pressure plate and the compression assembly and located within the pressure relief chamber. The pressure relief valve assembly is capable of opening or closing the pressure relief hole to allow the pressure relief hole to communicate with or be cut off from the pressure relief chamber. At least a portion of the pressure relief valve assembly is connected to the sealing gasket.

2. The compressor according to claim 1, characterized in that, The pressure relief valve assembly includes: A valve plate is connected to the sealing gasket, and the valve plate is capable of opening or closing the pressure relief hole; A limiting member is located on the side of the valve plate away from the compression chamber, along the axial direction of the back pressure plate, and at least a portion of the valve plate is disposed opposite to the limiting member.

3. The compressor according to claim 2, characterized in that, The valve plate includes: The valve body is arranged opposite to the pressure relief hole along the axial direction of the back pressure plate, and is used to open or close the pressure relief hole; The connecting part has one end connected to the valve body and the other end connected to the sealing gasket.

4. The compressor according to claim 3, characterized in that, The connecting part includes: The first connecting arm is connected to the sealing gasket; The second connecting arm is located between the first connecting arm and the valve body, and is connected to both the valve body and the first connecting arm. The width of the second connecting arm is smaller than the width of the first connecting arm.

5. The compressor according to claim 2, characterized in that, One end of the valve plate is connected to the sealing gasket, and there is a gap between the other end of the valve plate and the sealing gasket.

6. The compressor according to claim 2, characterized in that, The valve plate and the sealing gasket are an integral structure.

7. The compressor according to any one of claims 2 to 6, characterized in that, The limiting member is disposed on the back pressure plate; or the limiting member is connected to at least one of the valve plate and the compression assembly.

8. The compressor according to any one of claims 1 to 6, characterized in that, The back pressure plate includes: First plate; The second plate is disposed on the side of the first plate facing the compression chamber, and the sealing gasket is disposed between the second plate and the compression assembly. The second plate divides the space between the first plate and the compression assembly into two pressure relief chambers, and the sealing gasket is located between the two pressure relief chambers. The pressure relief valve assembly is located in at least one of the pressure relief chambers and is used to open or close at least one of the pressure relief holes.

9. The compressor according to claim 8, characterized in that, The two pressure relief chambers include an exhaust chamber and a bypass chamber, with the bypass chamber located outside the exhaust chamber along the radial direction of the back pressure plate; The pressure relief hole includes a first pressure relief hole communicating with the bypass cavity. The outer peripheral surface of the sealing gasket extends toward the bypass cavity to form a first valve plate, which opens or closes the first pressure relief hole.

10. The compressor according to claim 9, characterized in that, The pressure relief hole also includes a second pressure relief hole that communicates with the exhaust chamber. The inner circumferential surface of the sealing gasket extends toward the exhaust chamber to form a second valve plate, which opens or closes the second pressure relief hole.

11. The compressor according to claim 10, characterized in that, The back pressure plate includes an exhaust channel, which is connected to the exhaust chamber. Along the axial direction of the back pressure plate, at least a portion of the second valve plate is offset from the exhaust passage.

12. The compressor according to any one of claims 1 to 6, characterized in that, The compression component includes: Moving scroll plate; A stationary scroll plate forms the compression chamber with the moving scroll plate. A back pressure plate is connected to the side of the stationary scroll plate away from the moving scroll plate and forms the pressure relief chamber with the stationary scroll plate. The stationary scroll plate is provided with the pressure relief hole. The pressure relief valve assembly and the sealing gasket are respectively disposed between the back pressure plate and the stationary scroll plate.

13. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 12.

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