Scroll assembly, compressor and refrigeration apparatus

Abstract

The application provides a scroll assembly, a compressor and a refrigeration device, and the scroll assembly comprises a static disc, a back pressure plate, a floating plate assembly and a valve assembly, the static disc comprises a first disc body and a first scroll vane, and the first scroll vane is arranged on the first disc body; the back pressure plate is located on the side of the first disc body away from the first scroll vane, a bypass cavity is arranged between the back pressure plate and the first disc body, the valve assembly is arranged on the back pressure plate, and a first end of the valve assembly is in communication with the bypass cavity; the floating plate assembly is arranged on the side of the back pressure plate away from the first disc body, a back pressure cavity is arranged between the floating plate assembly and the back pressure plate, and the back pressure cavity is in communication with a second end of the valve assembly; the valve assembly can realize one-way conduction from the back pressure cavity to the bypass cavity, the back pressure cavity can release pressure into the bypass cavity through the valve assembly, the pressure in the back pressure cavity is reduced when the pressure in the back pressure cavity is too large, and then the friction between the static disc and a dynamic disc is reduced, and the noise generated by the scroll assembly when the scroll assembly operates in the compressor is reduced.

Description

Technical Field

[0001] This invention relates to the field of compressors, and more specifically, to a scroll assembly, a compressor, and a refrigeration device. Background Technology

[0002] Currently, in related technologies, the stationary disc assembly and the moving disc assembly within the compressor move relative to each other in a meshing state to compress the fluid. The stationary disc assembly has a back pressure chamber, which applies pressure to the stationary disc in the stationary disc assembly, pressing the stationary disc onto the moving disc to maintain the meshing state between the stationary and moving disc assemblies. However, when the pressure on the stationary disc assembly is too high, the friction between the stationary and moving disc assemblies also increases, which in turn leads to excessive noise during the operation of the compressor and has an adverse impact on the working environment. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, a first aspect of the present invention provides a vortex assembly.

[0005] A second aspect of the present invention provides a vortex assembly.

[0006] A third aspect of the present invention provides a compressor.

[0007] A fourth aspect of the present invention provides a refrigeration device.

[0008] In view of this, the first aspect of the present invention provides a vortex assembly, including a stationary disc, a back pressure plate, a valve assembly, and a float assembly. The stationary disc includes a first disc body and a first vortex blade, the first vortex blade being disposed on the first disc body. The back pressure plate is located on the side of the first disc body away from the first vortex blade, and a bypass cavity is provided between the back pressure plate and the first disc body. A valve assembly is disposed on the back pressure plate, and a first end of the valve assembly is connected to the bypass cavity. The float assembly is disposed on the side of the back pressure plate away from the first disc body, and a back pressure cavity is provided between the float assembly and the back pressure plate. The valve assembly is disposed on the back pressure plate, a first end of the valve assembly being connected to the bypass cavity, a second end of the valve assembly being connected to the back pressure cavity, and the valve assembly being capable of unidirectional flow from the back pressure cavity to the bypass cavity.

[0009] In this technical solution, the vortex assembly includes a stationary disk, a back pressure plate, and a float plate assembly. The stationary disk includes a first disk body and a first vortex blade. The first vortex blade is disposed on the first disk body and can rotate with the rotation of the first disk body. The back pressure plate is located on the side of the first disk body away from the first vortex blade, facilitating the application of pressure from the back pressure chamber to the first disk body. A bypass cavity is provided between the back pressure plate and the first disk body to provide a flow channel for the fluid in the vortex assembly. A valve assembly is provided on the back pressure plate to provide a pressure relief channel for the fluid in the back pressure chamber. The first end of the valve assembly is connected to the bypass cavity, allowing high-pressure fluid to enter the bypass cavity through the valve assembly. The float assembly is positioned on the side of the back pressure plate away from the first disc, with the back pressure plate located between the float assembly and the first disc. A back pressure cavity exists between the float assembly and the back pressure plate, and the back pressure cavity is connected to the second end of the valve assembly. Fluid inside the back pressure cavity can flow to the outside of the back pressure cavity through the second end of the valve assembly. The back pressure cavity applies pressure from the stationary disc to the moving disc on the first disc, causing the stationary disc and the moving disc to engage, thereby achieving a seal between the stationary disc and the moving disc. The valve assembly enables unidirectional flow from the back pressure cavity to the bypass cavity. When the pressure inside the back pressure cavity is too high, the back pressure cavity can release pressure into the bypass cavity through the valve assembly. This actively reduces the pressure inside the back pressure cavity when it exceeds a preset value, thereby reducing the large frictional force generated by the excessively tight contact between the stationary disc and the moving disc in the scroll assembly. This reduces the noise generated by the scroll assembly during operation in the compressor, ensuring stable operation of the compressor under various operating conditions.

[0010] Furthermore, the fluid in the bypass chamber cannot enter the back pressure chamber through the valve assembly, thereby achieving unidirectional flow of the control fluid from the back pressure chamber to the bypass chamber.

[0011] Furthermore, both the first and second vortex blades are helical, and the first and second vortex blades mesh with each other, thereby increasing the efficiency of fluid compression.

[0012] Furthermore, the float assembly and the back pressure plate are sealed together, which allows for better control of the pressure inside the back pressure chamber.

[0013] Furthermore, a recessed space is formed between the back pressure plate and the first disc body to cooperate with the first vortex blade and the second vortex blade.

[0014] In addition, the vortex component in the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

[0015] In some technical solutions of this application, optionally, the vortex assembly includes a flared mouth made of rubber material, which can control the unidirectional flow of fluid from the back pressure chamber to the bypass chamber.

[0016] In this technical solution, the first end of the rubber-made flared mouth is connected to the bypass cavity, allowing high-pressure fluid to enter the bypass cavity through the rubber-made flared mouth; the float assembly is disposed on the side of the back pressure plate away from the first disc body, so that the back pressure plate is located between the float assembly and the first disc body, and there is a back pressure cavity between the float assembly and the back pressure plate, which is connected to the second end of the rubber-made flared mouth, allowing fluid inside the back pressure cavity to flow to the outside of the back pressure cavity through the second end of the rubber-made flared mouth. The back pressure cavity applies pressure generated from the stationary disc to the moving disc on the first disc body, causing the stationary disc and the moving disc to cooperate, thereby achieving a seal between the stationary disc and the moving disc. The rubber flared opening enables unidirectional flow from the back pressure chamber to the bypass chamber. When the pressure in the back pressure chamber is too high, the back pressure chamber can release pressure into the bypass chamber through the rubber flared opening. This allows the pressure in the back pressure chamber to be actively reduced when it exceeds a preset value. Consequently, it reduces the large friction between the stationary and moving discs in the scroll assembly due to excessively tight contact, thereby reducing the noise generated by the scroll assembly during compressor operation and ensuring stable compressor operation under various conditions.

[0017] Optionally, in some technical solutions of this application, the back pressure plate is provided with a through hole, and the valve assembly includes a valve core and a blocking part. The valve core is disposed in the through hole and reciprocates relative to the through hole. The blocking part is disposed on the side of the valve assembly near the back pressure chamber, and the valve core can move relatively close to or away from the blocking part. When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the valve core separates from the blocking part, and the back pressure chamber and the bypass chamber are connected. When the pressure in the back pressure chamber is less than the pressure in the bypass chamber, the valve core and the blocking part are closed, and the back pressure chamber and the bypass chamber are blocked.

[0018] In this technical solution, a through hole is provided on the back pressure plate. The valve assembly includes a valve core and a blocking part. The valve core is disposed within the through hole and reciprocates relative to the through hole to open or close the through hole. The blocking part is located on the side of the valve assembly near the back pressure chamber. The valve core can move closer to or further away from the blocking part, and the blocking part can cooperate with the valve core to form a sealed space to prevent fluid from passing through. When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the valve core separates from the blocking part, and the back pressure chamber and bypass chamber are connected, allowing fluid to flow from the back pressure chamber to the bypass chamber to complete the pressure relief. When the pressure in the back pressure chamber is less than the pressure in the bypass chamber, the valve core and the blocking part are closed, and the through hole is now open. At this time, the back pressure chamber and bypass chamber are isolated to prevent fluid from flowing from the bypass chamber into the back pressure chamber.

[0019] Optionally, in some technical solutions of this application, the valve assembly includes a valve seat, a blocking part, and a valve core. The valve seat is connected to the back pressure plate and has a first channel. The blocking part is connected to the valve seat and is located on the side of the first channel near the back pressure chamber. The valve core is disposed in the channel. When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the valve core separates from the blocking part, and the first channel connects the back pressure chamber and the bypass chamber.

[0020] In this technical solution, the valve assembly includes a valve seat, a blocking part, and a valve core. The valve seat is connected to a back pressure plate, providing load-bearing and support for other components in the valve assembly. The valve seat has a first channel for fluid to flow from the back pressure chamber to the bypass chamber. The blocking part is connected to the valve seat and located on the side of the first channel near the back pressure chamber, used to cooperate with the valve core to disconnect or open the first channel. The valve core is disposed within the channel and is used to cooperate with the blocking part to disconnect or open the first channel. When the pressure in the back pressure chamber is high... When the pressure in the bypass chamber is within a certain range, the high-pressure fluid will push the valve core outward from the back pressure chamber, causing the valve core to separate from the blocking part. A flow space is formed between the valve core and the blocking part, thereby opening the first channel. At this time, the back pressure chamber and the bypass chamber are connected by the first channel, allowing the fluid to flow from the back pressure chamber to the bypass chamber. When the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the valve core contacts the blocking part. At this time, a sealed space is formed in the back pressure chamber, and the fluid cannot flow from the inside of the back pressure chamber to the outside of the back pressure chamber, thus disconnecting the first channel.

[0021] Furthermore, both the valve core and the blocking part are made of sealing material, which can enhance the sealing performance of the back pressure chamber when the valve core and the blocking part come into contact.

[0022] Optionally, in some technical solutions of this application, the valve assembly further includes an elastic element, which is connected to the valve seat and to the side of the valve core away from the blocking part; when the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the elastic element drives the valve core to contact the blocking part, and the first channel is disconnected.

[0023] In this technical solution, the valve assembly also includes an elastic element connected to the valve seat and also connected to the side of the valve core away from the blocking part. The valve seat provides fixed support for the elastic element so that it can generate a driving force on the valve core when resetting, allowing the valve core to reciprocate within the first channel. When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the high-pressure fluid pushes the valve core outward from the back pressure chamber, causing the valve core to separate from the blocking part, forming a flow space between the valve core and the blocking part, thus opening the first channel. At this time, the fluid flows from the back pressure chamber to the bypass chamber. When the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the elastic element in the compressed state begins to reset. During the reset process, the elastic element drives the valve core to contact the blocking part, the flow space between the valve core and the blocking part disappears, thereby disconnecting the first channel.

[0024] Furthermore, the elastic element can be a spring, which has a compressed state and a reset state, and can more reliably drive the valve core to control the opening and closing of the first channel.

[0025] In some technical solutions of this application, the valve assembly may optionally be a check valve; when the pressure in the back pressure chamber is greater than the opening pressure of the check valve, the check valve opens to allow fluid to flow; when the pressure in the back pressure chamber is less than the closing pressure of the check valve, the check valve closes to disconnect the fluid.

[0026] In this technical solution, the valve assembly is a one-way valve, which can control the unidirectional flow of fluid. When the pressure in the back pressure chamber is greater than the opening pressure of the one-way valve, the one-way valve can actively open, and at this time it is in a conducting state, allowing fluid to flow out from the back pressure chamber. When the pressure in the back pressure chamber is less than the closing pressure of the one-way valve, the one-way valve remains in a closed state, and at this time it is in a disconnected state, preventing fluid from flowing out from the back pressure chamber. By setting the valve assembly as a one-way valve, the first channel can be opened and closed according to the magnitude of the pressure it receives.

[0027] Specifically, the one-way valve can be a one-way pressure relief valve. When the pressure in the back pressure chamber is too high, the one-way pressure relief valve can control the fluid to flow out of the back pressure chamber and prevent the fluid from flowing back into the back pressure chamber.

[0028] Specifically, the one-way valve can be a reed valve. When the pressure in the back pressure chamber is too high, the reed valve can control the fluid to flow out of the back pressure chamber and prevent the fluid from flowing back into the back pressure chamber.

[0029] Specifically, the one-way valve can be a one-way solenoid valve. When the pressure in the back pressure chamber is too high, the one-way solenoid valve can control the fluid to flow out of the back pressure chamber and prevent the fluid from flowing back into the back pressure chamber.

[0030] In some technical solutions of this application, optionally, the valve assembly is a control valve; when the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the control valve opens and the valve assembly is connected; when the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the control valve closes and the valve assembly is disconnected.

[0031] In this technical solution, the valve assembly is a control valve, which can control the unidirectional flow of fluid. When the pressure in the back pressure chamber is greater than the opening pressure of the control valve, the control valve can automatically open. At this time, the valve assembly is in a conducting state, and the fluid can flow out from the back pressure chamber. When the pressure in the back pressure chamber is less than and / or equal to the closing pressure of the control valve, the control valve remains in a closed state. At this time, the valve assembly is in a disconnected state, and the fluid cannot flow out from the back pressure chamber. By opening and closing the control valve, the valve assembly can conduct and disconnect the first channel according to the magnitude of the pressure it receives.

[0032] Optionally, in some technical solutions of this application, the stationary disk may also include a mounting section, which is located on the side of the first disk body away from the first vortex blade and arranged circumferentially along the first disk body; at the same time, the back pressure plate and the float plate assembly are arranged inside the mounting section, and the back pressure plate, the float plate assembly and the mounting section enclose a back pressure cavity.

[0033] In this technical solution, the stationary disc also includes a mounting section, which can cooperate with the back pressure plate and the float plate assembly. The mounting section is located on the side of the first disc body away from the first vortex blade and is arranged circumferentially along the first disc body, so that the first disc body and the mounting section form an internally hollow mounting space, and other components can be installed in the hollow position within the mounting space. The back pressure plate and the float plate assembly are set in the mounting space within the mounting section, and the mounting section and the back pressure plate and the float plate assembly are sealed together. At this time, a back pressure cavity is formed within the space enclosed by the back pressure plate, the float plate assembly and the mounting section to accommodate the fluid entering and to withstand the pressure generated after the fluid enters the back pressure cavity.

[0034] Optionally, in some technical solutions of this application, the vortex assembly further includes a moving disk, which includes a second disk body and a second vortex blade. The second vortex blade is connected to the second disk body and cooperates with the first vortex blade. The first vortex blade and the second vortex blade enclose a plurality of compression cavities.

[0035] In this technical solution, the vortex assembly also includes a moving disk, on which a second disk body and a second vortex blade are disposed. The second disk body and the second vortex blade can cooperate with the stationary disk to compress the fluid. The second vortex blade is connected to the second disk body and can rotate with the rotation of the second disk body. It also cooperates with the first vortex blade. When the second vortex blade cooperates with the first vortex blade, the second vortex blade can move relative to the first vortex blade, so that multiple compression chambers are formed between the first vortex blade and the second vortex blade, thereby realizing the compression of the fluid entering the compression chamber through the cooperation of the stationary disk and the moving disk.

[0036] Specifically, the pressure inside the multiple compression chambers is different.

[0037] Optionally, in some technical solutions of this application, a back pressure hole is provided on the first disc body, and one of the compression chambers is connected to the back pressure chamber through the back pressure hole.

[0038] In this technical solution, a back pressure hole is opened on the first disc body. One of the multiple compression chambers can be connected to the back pressure chamber through the back pressure hole, so that the fluid in the compression chamber can enter the back pressure chamber through the back pressure hole under pressure.

[0039] In some technical solutions of this application, optionally, the vortex assembly further includes a bypass pipeline and a solenoid valve. The bypass pipeline is connected to at least one compression chamber through a bypass cavity. The solenoid valve is disposed on the bypass pipeline to control the opening or closing of the bypass pipeline.

[0040] In this technical solution, the scroll assembly is also equipped with a bypass pipeline and a solenoid valve. The bypass pipeline can be connected to at least one compression chamber through the bypass cavity, allowing external fluid to enter another compression chamber among multiple compression chambers through the bypass pipeline for compression. The solenoid valve is installed on the bypass pipeline to control the opening or closing of the bypass pipeline. It can continuously supply fluid to the bypass pipeline or intercept fluid outside the bypass pipeline according to the actual needs of the scroll assembly during operation. The solenoid valve can change the volume ratio of the compressor, thereby changing the displacement of the compressor to realize the variable capacity function within the compressor.

[0041] Specifically, the bypass pipe and back pressure port are connected to different compression chambers in multiple compression chambers to respectively realize the introduction and compression of fluid.

[0042] A second aspect of this application provides a vortex assembly, including a stationary disk, a back pressure plate, and a float assembly. The stationary disk includes a first disk body and a first vortex blade, with the first vortex blade disposed on the first disk body. The back pressure plate is located on the side of the first disk body away from the first vortex blade, and a bypass cavity is provided between the back pressure plate and the first disk body. The float assembly is disposed on the side of the back pressure plate away from the first disk body, and a back pressure cavity is provided between the float assembly and the back pressure plate. The back pressure plate is provided with a unidirectional flow channel that allows fluid to flow unidirectionally from the back pressure cavity to the bypass cavity.

[0043] In this technical solution, the vortex assembly includes a stationary disk, a back pressure plate, and a float assembly. The stationary disk includes a first disk body and first vortex blades. The first vortex blades are disposed on the first disk body and can cooperate with the moving disk to form multiple compression chambers. The back pressure plate is located on the side of the first disk body away from the first vortex blades. A bypass cavity is provided between the back pressure plate and the first disk body to discharge excessive pressure in the back pressure chamber to the bypass cavity. The float assembly is disposed on the side of the back pressure plate away from the first disk body. A back pressure chamber is provided between the float assembly and the back pressure plate. The pressure generated in the back pressure chamber squeezes the back pressure plate, thereby causing the back pressure plate to push the stationary disk to tightly mesh with the moving disk, thus maintaining a certain pressure in the compression chamber where compression is taking place. The back pressure plate has a one-way flow channel that allows fluid to flow unidirectionally from the back pressure chamber to the bypass chamber. When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the fluid can enter the bypass chamber unidirectionally through the one-way flow channel. When the pressure in the back pressure chamber is less than the pressure in the bypass chamber, the one-way flow channel can prevent the fluid from flowing back from the bypass chamber to the back pressure chamber.

[0044] In a third aspect, this application provides a compressor including a scroll assembly as described in any of the above-described technical solutions. Specifically, the compressor in this technical solution is a scroll compressor. Because the compressor includes a scroll assembly as described in any of the above-described technical solutions, the compressor possesses all the beneficial effects of a scroll assembly as described in any of the above-described technical solutions.

[0045] In a fourth aspect of this application, a refrigeration device is provided, including a scroll assembly as described in any of the above technical solutions or a compressor as described in any of the above technical solutions. Therefore, the refrigeration device has all the beneficial effects of the scroll assembly as described in any of the above technical solutions or the compressor as described in any of the above technical solutions.

[0046] Specifically, the refrigeration equipment in this technical solution can be a refrigerator, air conditioner, freezer, wine cabinet, or refrigerated display case, etc.

[0047] Additional aspects and advantages of the 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

[0048] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0049] Figure 1 One of the cross-sectional views of a vortex assembly according to an embodiment of the present invention is shown;

[0050] Figure 2 A second cross-sectional view of a vortex assembly according to an embodiment of the present invention is shown;

[0051] Figure 3 A cross-sectional view of a compressor according to an embodiment of the present invention is shown.

[0052] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0053] 100 Scroll assembly, 110 stationary disc, 112 first disc body, 114 back pressure hole, 116 first scroll blade, 118 mounting part, 120 back pressure plate, 122 bypass cavity, 123 unidirectional flow channel, 124 through hole, 130 float assembly, 132 back pressure cavity, 140 valve assembly, 142 valve seat, 144 first channel, 146 blocking part, 148 valve core, 150 elastic element, 160 moving disc, 162 second disc body, 164 second scroll blade, 170 bypass pipeline, 172 compression cavity, 180 solenoid valve, 200 compressor. Detailed Implementation

[0054] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention 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.

[0055] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0056] The following reference Figures 1 to 3 A scroll assembly, compressor, and refrigeration device are described according to some embodiments of the present invention.

[0057] In embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the first aspect of the present invention provides a vortex assembly 100, including a stationary disc 110, a back pressure plate 120, a valve assembly 140, and a float assembly 130. The stationary disc 110 includes a first disc body 112 and a first vortex blade 116, the first vortex blade 116 being disposed on the first disc body 112; the back pressure plate 120 is located on the side of the first disc body 112 away from the first vortex blade 116, a bypass cavity 122 is provided between the back pressure plate 120 and the first disc body 112, and a [missing information - likely a typo, should be "…"] is provided on the back pressure plate 120. Valve assembly 140, with its first end connected to bypass cavity 122; float assembly 130 disposed on the side of back pressure plate 120 away from the first disc 112, with back pressure cavity 132 between float assembly 130 and back pressure plate 120; valve assembly 140 disposed on back pressure plate 120, with its first end connected to bypass cavity 122 and its second end connected to back pressure cavity 132; valve assembly 140 is capable of unidirectional flow from back pressure cavity 132 to bypass cavity 122.

[0058] In this embodiment, such as Figure 1 and Figure 2As shown, the vortex assembly 100 includes a stationary disk 110, a back pressure plate 120, and a float assembly 130. The stationary disk 110 includes a first disk body 112 and a first vortex blade 116. The first vortex blade 116 is disposed on the first disk body 112 and can rotate with the rotation of the first disk body 112. The back pressure plate 120 is located on the side of the first disk body 112 away from the first vortex blade 116, which facilitates the back pressure chamber 132 to apply pressure to the first disk body 112. A bypass chamber 122 is provided between the back pressure plate 120 and the first disk body 112 to provide a flow channel for the fluid in the vortex assembly 100. A valve assembly 140 is provided on the back pressure plate 120 to provide a pressure relief channel for the fluid in the back pressure chamber 132. The first end of the valve assembly 140... The valve assembly 140 is connected to the bypass cavity 122, allowing high-pressure fluid to enter the bypass cavity 122 through the valve assembly 140. The float assembly 130 is disposed on the side of the back pressure plate 120 away from the first disc 112, with the back pressure plate 120 located between the float assembly 130 and the first disc 112. A back pressure cavity 132 is provided between the float assembly 130 and the back pressure plate 120. The back pressure cavity 132 is connected to the second end of the valve assembly 140. Fluid inside the back pressure cavity 132 can flow to the outside of the back pressure cavity 132 through the second end of the valve assembly 140. The back pressure cavity 132 applies pressure generated in the direction from the stationary disc 110 to the moving disc 160 on the first disc 112, causing the stationary disc 110 and the moving disc 160 to cooperate, thereby achieving a seal between the stationary disc 110 and the moving disc 160. The valve assembly 140 enables unidirectional flow from the back pressure chamber 132 to the bypass chamber 122. When the pressure in the back pressure chamber 132 is too high, the back pressure chamber 132 can release pressure into the bypass chamber 122 through the valve assembly 140. This allows the pressure in the back pressure chamber 132 to be actively reduced when it exceeds a preset value. Consequently, the large frictional force generated between the stationary plate 110 and the moving plate 160 in the scroll assembly 100 due to excessively tight contact is reduced. This lowers the noise generated by the scroll assembly 100 during operation in the compressor 200, ensuring that the compressor 200 can operate stably under various operating conditions.

[0059] Furthermore, the fluid in the bypass chamber 122 cannot enter the back pressure chamber 132 through the valve assembly 140, thereby achieving unidirectional flow of the control fluid from the back pressure chamber 132 to the bypass chamber 122.

[0060] Furthermore, both the first vortex blade 116 and the second vortex blade 164 are spiral-shaped, and the first vortex blade 116 and the second vortex blade 164 mesh with each other, thereby increasing the efficiency of fluid compression.

[0061] Furthermore, the float assembly 130 and the back pressure plate 120 are sealed together, thereby enabling better control of the pressure within the back pressure chamber 132.

[0062] Furthermore, a recessed space is formed between the back pressure plate 120 and the first disc body 112 so as to cooperate with the first vortex blade 116 and the second vortex blade 164.

[0063] Specifically, such as Figure 1 As shown, the side of the first disk 112 away from the first vortex blade 116 is C.

[0064] Specifically, such as Figure 1 As shown, the side of the back pressure plate 120 away from the first disc 112 is D.

[0065] Specifically, such as Figure 1 As shown, the direction from stationary disk 110 to moving disk 160 is direction G.

[0066] Specifically, such as Figure 2 As shown, the first end of the valve assembly 140 is A.

[0067] Specifically, such as Figure 2 As shown, the second end of the valve assembly 140 is B.

[0068] In addition, the vortex assembly 100 in the above embodiments provided by the present invention may also have the following additional technical features:

[0069] The vortex assembly 100 includes a rubber flared end that controls the unidirectional flow of fluid from the back pressure chamber 132 to the bypass chamber 122.

[0070] In this embodiment, the first end of the rubber-made flared mouth is connected to the bypass cavity 122, allowing high-pressure fluid to enter the bypass cavity 122 through the rubber-made flared mouth. The float assembly 130 is disposed on the side of the back pressure plate 120 away from the first disc body 112, with the back pressure plate 120 located between the float assembly 130 and the first disc body 112. A back pressure cavity 132 is provided between the float assembly 130 and the back pressure plate 120. The back pressure cavity 132 is connected to the second end of the rubber-made flared mouth, allowing fluid inside the back pressure cavity 132 to flow to the outside of the back pressure cavity 132 through the second end of the rubber-made flared mouth. The back pressure cavity 132 applies pressure generated in the direction from the stationary disc 110 to the moving disc 160 on the first disc body 112, causing the stationary disc 110 and the moving disc 160 to cooperate, thereby achieving a seal between the stationary disc 110 and the moving disc 160. The rubber flared opening enables unidirectional flow from the back pressure chamber 132 to the bypass chamber 122. When the pressure in the back pressure chamber 132 is too high, the back pressure chamber 132 can release pressure into the bypass chamber 122 through the rubber flared opening. This allows the pressure in the back pressure chamber 132 to be actively reduced when it exceeds a preset value. Consequently, the large frictional force generated between the stationary disk 110 and the moving disk 160 in the scroll assembly 100 due to excessively tight contact is reduced. This lowers the noise generated by the scroll assembly 100 during operation in the compressor 200, ensuring that the compressor 200 can operate stably under various operating conditions.

[0071] In some embodiments of this application, optionally, such as Figure 1 and Figure 2 As shown, the back pressure plate has a through hole 124. The valve assembly 140 includes a valve core 148 and a blocking part. The valve core 148 is disposed in the through hole 124 and reciprocates relative to the through hole 124. The blocking part 146 is disposed on the side of the valve assembly 140 near the back pressure chamber 132. The valve core 148 can move relatively close to or away from the blocking part 146. When the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, the valve core 148 separates from the blocking part 146, and the back pressure chamber 132 is connected to the bypass chamber 122. When the pressure in the back pressure chamber 132 is less than the pressure in the bypass chamber 122, the valve core 148 and the blocking part 146 are closed, and the back pressure chamber 132 is blocked from the bypass chamber 122.

[0072] In this embodiment, such as Figure 1 and Figure 2As shown, a through hole 124 is provided on the back pressure plate. The valve assembly 140 includes a valve core 148 and a blocking part. The valve core 148 is disposed in the through hole 124 and reciprocates relative to the through hole 124 to open or close the through hole 124. The blocking part 146 is disposed on the side of the valve assembly 140 near the back pressure chamber 132. The valve core 148 can move closer to or away from the blocking part 146. The blocking part 146 can cooperate with the valve core 148 to form a sealed space to prevent fluid from passing through. When the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, the valve core 148 separates from the blocking part 146, and the back pressure chamber 132 is connected to the bypass chamber 122. Fluid flows from the back pressure chamber 132 to the bypass chamber 122 to complete the pressure relief. When the pressure in the back pressure chamber 132 is less than the pressure in the bypass chamber 122, the valve core 148 and the blocking part 146 are closed, and the through hole 124 is in the open state at this time. At this time, the back pressure chamber 132 and the bypass chamber 122 are blocked to prevent fluid from flowing from the bypass chamber 122 into the back pressure chamber 132.

[0073] In some embodiments of this application, optionally, such as Figure 1 and Figure 2 As shown, the valve assembly 140 includes a valve seat 142, a blocking part 146, and a valve core 148. The valve seat 142 is connected to the back pressure plate 120 and has a first channel 144. The blocking part 146 is connected to the valve seat 142 and is located on the side of the first channel 144 near the back pressure chamber 132. The valve core 148 is disposed in the first channel 144. When the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, the valve core 148 separates from the blocking part 146, and the first channel 144 connects the back pressure chamber 132 and the bypass chamber 122.

[0074] In this embodiment, such as Figure 1 and Figure 2As shown, the valve assembly 140 includes a valve seat 142, a blocking portion 146, and a valve core 148. The valve seat 142 is connected to the back pressure plate 120, providing load-bearing and support for other components in the valve assembly 140. The valve seat 142 is provided with a first channel 144, allowing fluid to flow from the back pressure chamber 132 outward through the first channel 144 to the bypass chamber 122. The blocking portion 146 is connected to the valve seat 142 and is located on the side of the first channel 144 near the back pressure chamber 132, used to cooperate with the valve core 148 to disconnect or open the first channel 144. The valve core 148 is disposed in the first... Within channel 144, a blocking part 146 is used to cooperate with the first channel 144 to disconnect or open it. When the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, high-pressure fluid pushes the valve core 148 outward from the back pressure chamber 132, causing the valve core 148 to separate from the blocking part 146. A flow space is formed between the valve core 148 and the blocking part 146, thus opening the first channel 144. At this time, the back pressure chamber 132 and the bypass chamber 122 are connected by the first channel 144, allowing fluid to flow from the back pressure chamber 132 to the bypass chamber 122. When the pressure in the back pressure chamber 132 is equal to or less than the pressure in the bypass chamber 122, the valve core 148 contacts the blocking part 146. At this time, a sealed space is formed within the back pressure chamber 132, preventing fluid from flowing from inside the back pressure chamber 132 to the outside, thus disconnecting the first channel 144.

[0075] Furthermore, both the valve core 148 and the blocking part 146 are made of sealing material. When the valve core 148 and the blocking part 146 come into contact, the sealing performance of the back pressure chamber 132 can be enhanced.

[0076] Specifically, such as Figure 2 As shown, the side of the first channel 144 closest to the back pressure chamber 132 is E.

[0077] In some embodiments of this application, optionally, such as Figure 2 As shown, the valve assembly 140 also includes an elastic element 150, which is connected to the valve seat 142 and to the side of the valve core 148 away from the blocking part 146. When the pressure in the back pressure chamber 132 is less than or equal to the pressure in the bypass chamber 122, the elastic element 150 drives the valve core 148 to contact the blocking part 146, and the first channel 144 is disconnected.

[0078] In this embodiment, such as Figure 2As shown, the valve assembly 140 also includes an elastic element 150, which is connected to the valve seat 142 and also connected to the side of the valve core 148 away from the blocking portion 146. The valve seat 142 provides fixed support for the elastic element 150, so that the elastic element 150 can generate a driving force applied to the valve core 148 when it is reset, allowing the valve core 148 to reciprocate within the first channel 144. When the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, the high-pressure fluid will push the valve core 148 outward from the back pressure chamber 132. 8. The movement causes the valve core 148 to separate from the blocking part 146, forming a flow space between the valve core 148 and the blocking part 146, thereby opening the first channel 144. At this time, the fluid flows from the back pressure chamber 132 to the bypass chamber 122. When the pressure in the back pressure chamber 132 is less than or equal to the pressure in the bypass chamber 122, the elastic element 150, which is in a compressed state, begins to reset. During the reset process, the elastic element 150 drives the valve core 148 to contact the blocking part 146, and the flow space between the valve core 148 and the blocking part 146 disappears, thereby disconnecting the first channel 144.

[0079] Furthermore, the elastic element 150 can be a spring, which has a compressed state and a reset state, and can more reliably drive the valve core 148 to control the opening and closing of the first channel 144.

[0080] Specifically, such as Figure 2 As shown, the side of the valve core 148 away from the blocking part 146 is F.

[0081] In some embodiments of this application, optionally, such as Figure 1 and Figure 2 As shown, valve assembly 140 is a check valve; when the pressure in the back pressure chamber 132 is greater than the opening pressure of the check valve, the check valve opens to allow fluid to flow; when the pressure in the back pressure chamber 132 is less than the closing pressure of the check valve, the check valve closes to disconnect the fluid.

[0082] In this embodiment, such as Figure 1 and Figure 2 As shown, valve assembly 140 is a one-way valve, which can control the unidirectional flow of fluid. When the pressure in the back pressure chamber 132 is greater than the opening pressure of the one-way valve, the one-way valve can actively open, and at this time it is in the conducting state, and the fluid can flow out from the back pressure chamber 132. When the pressure in the back pressure chamber 132 is less than the closing pressure of the one-way valve, the one-way valve remains in the closed state, and at this time it is in the disconnected state, and the fluid cannot flow out from the back pressure chamber 132. By setting valve assembly 140 as a one-way valve, the first channel 144 can be opened and closed according to the pressure it receives.

[0083] Specifically, the one-way valve can be a one-way pressure relief valve. When the pressure in the back pressure chamber 132 is too high, the one-way pressure relief valve can control the fluid to flow out of the back pressure chamber 132 and prevent the fluid from flowing back into the back pressure chamber 132.

[0084] Specifically, the one-way valve can be a reed valve. When the pressure in the back pressure chamber 132 is too high, the reed valve can control the fluid to flow out of the back pressure chamber 132 and prevent the fluid from flowing back into the back pressure chamber 132.

[0085] Specifically, the one-way valve can be a one-way solenoid valve 180. When the pressure in the back pressure chamber 132 is too high, the one-way solenoid valve 180 can control the fluid to flow out of the back pressure chamber 132 and prevent the fluid from flowing back into the back pressure chamber 132.

[0086] In some embodiments of this application, optionally, such as Figure 1 As shown, valve assembly 140 is a control valve; when the pressure in the back pressure chamber 132 is greater than the pressure in the bypass chamber 122, the control valve opens and valve assembly 140 is connected; when the pressure in the back pressure chamber 132 is less than or equal to the pressure in the bypass chamber 122, the control valve closes and valve assembly 140 is disconnected.

[0087] In this embodiment, such as Figure 1 As shown, valve assembly 140 is a control valve that controls the unidirectional flow of fluid. When the pressure in the back pressure chamber 132 is greater than the opening pressure of the control valve, the control valve can automatically open. At this time, valve assembly 140 is in the conducting state, and fluid can flow out from the back pressure chamber 132. When the pressure in the back pressure chamber 132 is less than the closing pressure of the control valve, the control valve remains in the closed state. At this time, valve assembly 140 is in the open state, and fluid cannot flow out from the back pressure chamber 132. By opening and closing the control valve, valve assembly 140 can conduct and disconnect the first channel 144 according to the pressure it receives.

[0088] In some embodiments of this application, optionally, such as Figure 1 and Figure 3 As shown, the stationary disk 110 also includes a mounting part 118, which is disposed on the side of the first disk body 112 away from the first vortex blade 116 and arranged along the circumference of the first disk body 112; at the same time, the back pressure plate 120 and the float assembly 130 are disposed inside the mounting part 118, and the back pressure plate 120, the float assembly 130 and the mounting part 118 surround the back pressure cavity 132.

[0089] In this embodiment, such as Figure 1 and Figure 3As shown, the stationary disc 110 also includes a mounting portion 118, which can cooperate with the back pressure plate 120 and the float assembly 130. The mounting portion 118 is located on the side of the first disc body 112 away from the first vortex blade 116 and is arranged circumferentially along the first disc body 112, so that the first disc body 112 and the mounting portion 118 form an internally hollow mounting space, and other components can be installed in the hollow position within the mounting space. The back pressure plate 120 and the float assembly 130 are arranged in the mounting space within the mounting portion 118, and the mounting portion 118 is sealed to the back pressure plate 120 and the float assembly 130. At this time, a back pressure cavity 132 is formed within the space enclosed by the back pressure plate 120, the float assembly 130 and the mounting portion 118 to accommodate fluid entry and withstand the pressure generated after the fluid enters the back pressure cavity 132.

[0090] Specifically, such as Figure 1 As shown, the circumferential direction of the first disk 112 is direction H.

[0091] In some embodiments of this application, optionally, such as Figure 3 As shown, the vortex assembly 100 also includes a moving disk 160, which includes a second disk body 162 and a second vortex blade 164. The second vortex blade 164 is connected to the second disk body 162 and cooperates with the first vortex blade 116. The first vortex blade 116 and the second vortex blade 164 form a plurality of compression cavities 172.

[0092] In this embodiment, such as Figure 3 As shown, the vortex assembly 100 also includes a moving disk 160. A second disk body 162 and a second vortex blade 164 are disposed on the moving disk 160. The second disk body 162 and the second vortex blade 164 can cooperate with the stationary disk 110 to compress the fluid. The second vortex blade 164 is connected to the second disk body 162 and can rotate with the rotation of the second disk body 162. It also cooperates with the first vortex blade 116. When the second vortex blade 164 cooperates with the first vortex blade 116, the second vortex blade 164 can move relative to the first vortex blade 116, so that multiple compression chambers 172 are formed between the first vortex blade 116 and the second vortex blade 164. Thus, the fluid entering the compression chamber 172 is compressed by the cooperation of the stationary disk 110 and the moving disk 160.

[0093] Specifically, the pressure inside the multiple compression chambers 172 is different.

[0094] In some embodiments of this application, optionally, such as Figure 1 and Figure 3 As shown, a back pressure hole 114 is provided on the first disc body 112, and one of the compression chambers 172 is connected to the back pressure chamber 132 through the back pressure hole 114.

[0095] In this embodiment, such as Figure 1 and Figure 3 As shown, a back pressure hole 114 is provided on the first disc body 112. One of the compression chambers 172 can be connected to the back pressure chamber 132 through the back pressure hole 114, so that the fluid in the compression chamber 172 can enter the back pressure chamber 132 through the back pressure hole 114 under pressure.

[0096] In some embodiments of this application, optionally, such as Figure 1 and Figure 3 As shown, the vortex assembly 100 also includes a bypass line 170 and a solenoid valve 180. The bypass line 170 is connected to at least one compression chamber 172 through a bypass cavity 122. The solenoid valve 180 is disposed on the bypass line 170 to control the opening or closing of the bypass line 170.

[0097] In this embodiment, such as Figure 1 and Figure 3 As shown, the scroll assembly 100 is also provided with a bypass pipe 170 and a solenoid valve 180. The bypass pipe 170 can be connected to at least one compression chamber 172 through the bypass cavity 122, so that external fluid can enter another compression chamber 172 among the multiple compression chambers 172 through the bypass pipe 170 for compression. The solenoid valve 180 is provided on the bypass pipe 170 to control the opening or closing of the bypass pipe 170. It can continuously deliver fluid to the bypass pipe 170 or intercept fluid outside the bypass pipe 170 according to the actual needs of the scroll assembly 100 during operation. The solenoid valve 180 can change the volume ratio of the compressor 200, thereby changing the displacement of the compressor 200 to realize the variable capacity function in the compressor 200.

[0098] Specifically, the bypass pipe 170 and the back pressure port 114 are respectively connected to different compression chambers 172 among the multiple compression chambers 172, so as to realize the introduction and compression of fluid respectively.

[0099] In some embodiments of this application, a vortex assembly is provided, such as Figure 3As shown, the system includes a stationary disk 110, a back pressure plate 120, and a float assembly 130. The stationary disk 110 includes a first disk body 112 and a first vortex blade 116, with the first vortex blade 116 disposed on the first disk body 112. The back pressure plate 120 is located on the side of the first disk body 112 away from the first vortex blade 116, and a bypass cavity 122 is provided between the back pressure plate 120 and the first disk body 112. The float assembly 130 is disposed on the side of the back pressure plate 120 away from the first disk body 112, and a back pressure cavity 132 is provided between the float assembly 130 and the back pressure plate 120. The back pressure plate 120 is provided with a unidirectional flow channel 123 that allows fluid to flow unidirectionally from the back pressure cavity 132 to the bypass cavity 122.

[0100] In this embodiment, such as Figure 3 As shown, the vortex assembly includes a stationary disk 110, a back pressure plate 120, and a float assembly 130. The stationary disk 110 includes a first disk body 112 and a first vortex blade 116. The first vortex blade 116 is disposed on the first disk body 112 and can cooperate with the moving disk 160 to form multiple compression chambers 172. The back pressure plate 120 is located on the side of the first disk body 112 away from the first vortex blade 116. A bypass cavity 122 is provided between the back pressure plate 120 and the first disk body 112, which can discharge excessive pressure in the back pressure chamber 132 into the bypass cavity 122. The float assembly 130 is disposed on the side of the back pressure plate 120 away from the first disc 112. A back pressure cavity 132 is provided between the float assembly 130 and the back pressure plate 120. The pressure generated within the back pressure cavity 132 compresses the back pressure plate 120, thereby causing the back pressure plate 120 to push the stationary disc 110 to tightly engage with the moving disc 160, thus maintaining a certain pressure in the compression cavity 172 where compression is taking place. The back pressure plate 120 has a one-way flow channel 123 that allows fluid to flow unidirectionally from the back pressure cavity 132 to the bypass cavity 122. When the pressure in the back pressure cavity 132 is greater than the pressure in the bypass cavity 122, the fluid can enter the bypass cavity 122 unidirectionally through the one-way flow channel 123. When the pressure in the back pressure cavity 132 is less than the pressure in the bypass cavity 122, the one-way flow channel 123 prevents the fluid from flowing back from the bypass cavity 122 to the back pressure cavity 132.

[0101] In some embodiments of this application, a compressor 200 is provided, such as Figure 3 As shown, it includes a vortex assembly 100 as described in any of the above embodiments.

[0102] Specifically, the compressor 200 in this embodiment can be a scroll compressor.

[0103] Since the compressor includes a scroll assembly as described in any of the above embodiments, the compressor possesses all the beneficial effects of the scroll assembly as described in any of the above embodiments.

[0104] In some embodiments of this application, a refrigeration device is provided, including a scroll assembly 100 as described in any of the above embodiments or a compressor 200 as described in any of the above embodiments. Therefore, the refrigeration device has all the beneficial effects of the scroll assembly or the compressor as described in any of the above embodiments.

[0105] Specifically, the refrigeration equipment in this embodiment can be a refrigerator, air conditioner, freezer, wine cabinet, or refrigerated display case, etc.

[0106] In some embodiments of this application, a vehicle is provided, including a scroll assembly 100 as described in any of the above embodiments or a compressor 200 as described in any of the above embodiments.

[0107] Furthermore, the vehicle in this embodiment can be a traditional fuel vehicle or a new energy vehicle.

[0108] Specifically, new energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0109] 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 textual description of this invention, 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.

[0110] In the textual description of this invention, it is understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description of the technical solution of this invention, and do not indicate or imply that the structure, device, or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting this invention.

[0111] In the textual description of this invention, it is understood that, unless explicitly specified and limited, the terms "installation," "connection," and "linking" 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 communication between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0112] In the claims, description, and accompanying drawings of this invention, the term "plural" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description process, not to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the invention. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood based on the specific circumstances described above.

[0113] In the claims, description, and accompanying drawings of this invention, 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 invention. In the claims, description, and accompanying drawings of this invention, 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.

[0114] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vortex assembly, characterized in that, include: A stationary disk, the stationary disk comprising a first disk body and a first vortex blade, the first vortex blade being disposed on the first disk body; A back pressure plate is located on the side of the first disk body away from the first vortex blade, and a bypass cavity is provided between the back pressure plate and the first disk body. A float assembly is disposed on the side of the back pressure plate away from the first disc body, and a back pressure cavity is provided between the float assembly and the back pressure plate; A valve assembly is disposed on the back pressure plate. The first end of the valve assembly is connected to the bypass cavity, and the second end of the valve assembly is connected to the back pressure cavity. The valve assembly is capable of unidirectional flow from the back pressure cavity to the bypass cavity.

2. The vortex assembly according to claim 1, characterized in that, The back pressure plate has a through hole, and the valve assembly includes: A valve core, wherein the valve core is disposed within the through hole and reciprocates relative to the through hole; A blocking part is provided on the side of the valve assembly near the back pressure chamber, and the valve core can be relatively close to or away from the blocking part; When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the valve core separates from the blocking part, and the back pressure chamber and the bypass chamber are connected; when the pressure in the back pressure chamber is less than the pressure in the bypass chamber, the valve core closes to the blocking part, and the back pressure chamber and the bypass chamber are blocked.

3. The vortex assembly according to claim 1, characterized in that, The valve assembly includes: A valve seat, which is connected to the back pressure plate, and the valve seat is provided with a first channel; A blocking part, which is connected to the valve seat, is located on the side of the first channel near the back pressure chamber; A valve core, wherein the valve core is disposed within the first channel; When the pressure in the back pressure chamber is greater than the pressure in the bypass chamber, the valve core separates from the blocking part, and the first channel connects the back pressure chamber and the bypass chamber.

4. The vortex assembly according to claim 3, characterized in that, The valve assembly also includes: An elastic element is connected to the valve seat and to the side of the valve core away from the blocking portion; When the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the elastic element drives the valve core to contact the blocking part, and the first channel is disconnected.

5. The vortex assembly according to claim 1, characterized in that, The valve assembly is a one-way valve; Wherein, the one-way valve opens when the pressure in the back pressure chamber is greater than the opening pressure of the one-way valve; When the pressure in the back pressure chamber is less than or equal to the closing pressure of the one-way valve, the one-way valve closes.

6. The vortex assembly according to claim 1, characterized in that, The valve assembly is a control valve; The control valve opens when the pressure in the back pressure chamber is greater than the pressure in the bypass chamber. When the pressure in the back pressure chamber is less than or equal to the pressure in the bypass chamber, the control valve closes.

7. The vortex assembly according to any one of claims 1 to 6, characterized in that, The static disk also includes: The mounting part is disposed on the side of the first disk body away from the first vortex blade and is arranged circumferentially along the first disk body; The back pressure plate and the float assembly are disposed inside the mounting portion, and the back pressure plate, the float assembly and the mounting portion enclose the back pressure cavity.

8. The vortex assembly according to any one of claims 1 to 6, characterized in that, Also includes: The moving disk includes a second disk body and a second vortex blade. The second vortex blade is connected to the second disk body and cooperates with the first vortex blade. The first vortex blade and the second vortex blade enclose a plurality of compression cavities.

9. The vortex assembly according to claim 8, characterized in that, The first disc body is provided with a back pressure hole, and one of the compression chambers is connected to the back pressure chamber through the back pressure hole.

10. The vortex assembly according to claim 8, characterized in that, Also includes: A bypass line, wherein the bypass line is connected to at least one compression chamber through the bypass cavity; A solenoid valve is disposed in the bypass pipeline to control the opening or closing of the bypass pipeline.

11. A vortex assembly, characterized in that, include: A stationary disk, the stationary disk comprising a first disk body and a first vortex blade, the first vortex blade being disposed on the first disk body; A back pressure plate is located on the side of the first disk body away from the first vortex blade, and a bypass cavity is provided between the back pressure plate and the first disk body. A float assembly is disposed on the side of the back pressure plate away from the first disc body, and a back pressure cavity is provided between the float assembly and the back pressure plate; The back pressure plate is provided with a unidirectional flow channel that allows fluid to flow unidirectionally from the back pressure chamber to the bypass chamber.

12. A compressor, characterized in that, Includes the vortex assembly as described in any one of claims 1 to 11.

13. A refrigeration device, characterized in that, include: The vortex assembly as described in any one of claims 1 to 11; or The compressor as described in claim 12.

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