Scroll assembly, compressor and refrigeration apparatus

Abstract

The utility model provides a kind of scroll assembly, compressor and refrigeration equipment, scroll assembly includes static disc, back pressure plate and float plate component, static disc includes first disc body and first scroll blade, first scroll blade is set on first disc body, back pressure plate is located the side of first disc body away from first scroll blade, bypass cavity is arranged between back pressure plate and first disc body, back pressure plate is provided with pressure relief passage, the first end of pressure relief passage is communicated with bypass cavity, float plate component, float plate component is set to the side of back pressure plate away from first disc body, back pressure cavity is between float plate component and back pressure plate, back pressure cavity is communicated with the second end of pressure relief passage. By being able to continuously carry out the pressure relief passage of micro leakage on back pressure plate, back pressure cavity can continuously carry out small degree pressure relief to bypass cavity by pressure relief passage, reduce the friction force generated between static disc and dynamic disc in scroll assembly, reduce the noise generated when scroll assembly runs in compressor.

Description

Technical Field

[0001] This utility model 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. Utility Model Content

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

[0004] Therefore, the first aspect of this utility model proposes a vortex assembly.

[0005] The second aspect of this utility model provides a compressor.

[0006] The third aspect of this utility model proposes a refrigeration device.

[0007] In view of the above, the first aspect of this utility model 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, the first vortex blade being 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 back pressure plate is provided with a pressure relief channel, the first end of which is connected to the bypass cavity. 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 cavity being connected to the second end of the pressure relief channel.

[0008] This application provides a scroll assembly including a stationary disc, a back pressure plate, and a float plate assembly. The stationary disc includes a first disc body and a first scroll blade. The first scroll blade is disposed on the first disc body and can rotate with the rotation of the first disc body. The back pressure plate is located on the side of the first disc body away from the first scroll blade, which facilitates the back pressure chamber to apply pressure to the first disc body. A bypass chamber is provided between the back pressure plate and the first disc body. By providing the bypass chamber and connecting it to the compression chamber in the scroll assembly, a bypass hole is provided on the back of the stationary disc and is connected to the bypass chamber through a one-way valve, realizing the variable volume function of the compressor. When the scroll compressor is in full load, the pressure of the bypass hole is the intermediate pressure. When the compressor is in half load, the pressure of the bypass hole is the suction pressure, which enables the compressor to realize the variable volume function and also provides a pressure relief space for the fluid in the scroll assembly. A pressure relief channel is provided on the back pressure plate. The first end of the pressure relief channel is connected to the bypass cavity, allowing high-pressure fluid to enter the bypass cavity through the pressure relief channel. The float assembly is located 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. There is a back pressure cavity between the float assembly and the back pressure plate. The back pressure cavity is connected to the second end of the pressure relief channel. The fluid inside the back pressure cavity can flow to the outside of the back pressure cavity through the second end of the pressure relief channel. The back pressure cavity applies pressure generated from the stationary disc to the moving disc on the first disc body, so that the stationary disc and the moving disc cooperate, thereby achieving the sealing between the stationary disc and the moving disc. By setting a pressure relief channel on the back pressure plate that allows for continuous micro-leakage, the back pressure chamber can continuously release pressure to a small extent into the bypass chamber through the pressure relief channel. This allows fluid in the back pressure chamber to leak into the bypass chamber when the pressure in the back pressure chamber exceeds a preset value, continuously reducing the pressure in the back pressure chamber. This prevents the pressure in the back pressure chamber from exceeding the required pressure, avoiding an increase in the axial force between the moving and stationary discs due to excessive pressure. Consequently, it reduces the large frictional force generated between the stationary and moving discs in the scroll assembly due to overly tight contact, reducing the noise generated by the scroll assembly during compressor operation. This ensures stable operation of the compressor under various operating conditions and improves the compressor's reliability and lifespan.

[0009] Optionally, in some technical solutions of this application, a first back pressure hole is provided on the first plate body, the first back pressure hole penetrates the first plate body, and a second back pressure hole is provided on the back pressure plate, the second back pressure hole communicates with the first back pressure hole and communicates with the back pressure cavity; the fluid flow cross-sectional area of ​​the first back pressure hole and / or the second back pressure hole is larger than the fluid flow cross-sectional area of ​​the pressure relief channel.

[0010] In this technical solution, a first back pressure hole is formed on the first disc body, penetrating the first disc body and communicating with the back pressure cavity. This allows fluid in the compression chamber of the vortex assembly to enter the back pressure cavity under pressure through the first back pressure hole, thereby creating pressure. The fluid flow cross-sectional area of ​​the first back pressure hole is larger than that of the pressure relief channel, ensuring that the flow rate of fluid entering the back pressure cavity through the first back pressure hole is greater than the flow rate of fluid entering the bypass cavity through the pressure relief channel. This maintains that the pressure in the back pressure cavity is always greater than the pressure in the bypass cavity, ensuring that the back pressure cavity maintains the normal operating pressure required for operation even when undergoing minor pressure relief through the pressure relief channel.

[0011] Optionally, in some technical solutions of this application, the vortex assembly may also include a flow-blocking component, which is disposed within the pressure relief channel.

[0012] In this technical solution, the vortex assembly also includes a flow-blocking component. The flow-blocking component is set in the pressure relief channel. The flow-blocking component can enable the fluid to flow from the back pressure chamber to the bypass chamber, allowing the fluid to flow from the back pressure chamber to the bypass chamber.

[0013] Optionally, in some technical solutions of this application, the flow-blocking component includes a first support and a flow-blocking member. The first support is disposed in the pressure relief channel and connected to the back pressure plate. The flow-blocking member is disposed in the first support. The flow-blocking member has multiple holes that connect both sides of the pressure relief channel.

[0014] In this technical solution, the flow-blocking assembly further includes a first support and a flow-blocking component. The first support is disposed within the pressure relief channel and connected to the back pressure plate, allowing the first support to be fixed within the back pressure plate and enabling fluid to flow through the back pressure plate. The flow-blocking component is disposed within the first support, allowing fluid to flow within the flow-blocking component. The flow-blocking component has multiple holes that connect both sides of the pressure relief channel, thereby blocking the flow of fluid passing through the flow-blocking component. The multiple holes cause the fluid to suddenly encounter resistance in the direction of travel when passing through the flow-blocking component, thus significantly slowing down the flow velocity and allowing the fluid flowing out of the back pressure chamber to continuously enter the bypass chamber through the pressure relief channel at a small flow rate. By placing the flow-blocking component within the first support, the pressure in the back pressure chamber can be continuously reduced through the pressure relief channel, reducing the large frictional force generated by the excessively tight contact between the stationary and moving discs in the scroll assembly, and reducing the noise generated by the scroll assembly during operation in the compressor, thus ensuring stable operation of the compressor under various operating conditions.

[0015] In some technical solutions of this application, optionally, multiple holes are interconnected.

[0016] In this technical solution, by connecting multiple holes to each other, the fluid changes its direction of movement multiple times as it passes through the inside of the flow-blocking component, thereby further improving the effect of blocking the fluid passing through the flow-blocking component.

[0017] Optionally, in some technical solutions of this application, the back pressure plate is provided with a positioning groove, which is arranged circumferentially along the pressure relief channel and located on the side of the pressure relief channel away from the first disc; the first support part includes a flow part and a first positioning part, the flow part is disposed in the pressure relief channel, the first positioning part is connected to the flow part, and the first positioning part is located in the positioning groove.

[0018] In this technical solution, the back pressure plate is provided with a positioning groove, which is arranged circumferentially along the pressure relief channel and located on the side of the pressure relief channel away from the first disc. This positioning groove can position the first positioning part located within it, preventing it from deviating from its predetermined position during the operation of the vortex assembly. The first support part includes a flow section and a first positioning part. The flow section is located within the pressure relief channel, and the first positioning part is connected to it. The first positioning part is located within the positioning groove, ensuring that the flow section remains within the pressure relief channel and preventing it from deviating from its predetermined position due to fluid impact. This further improves the flow-blocking effect of the flow-blocking assembly.

[0019] Optionally, in some technical solutions of this application, the first support portion further includes a limiting portion, which is connected to the flow portion and protrudes from the inner wall of the flow portion; the flow-blocking component is located inside the flow portion and abuts against the limiting portion.

[0020] In this technical solution, the first support part also includes a limiting part, which is connected to the flow part and protrudes from the inner wall of the flow part to restrict the upward movement of the flow-blocking component. The flow-blocking component is located inside the flow part and abuts against the limiting part. When the fluid passes through, the flow-blocking component is fixed inside the flow part by the friction generated by abutting against the limiting part to prevent it from falling off.

[0021] In some technical solutions of this application, optionally, the pressure relief channel extends in a straight line or curve, penetrating the back pressure plate.

[0022] In this technical solution, the pressure relief channel can extend in a straight line and pass through the back pressure plate, or it can extend in a curve and pass through the back pressure plate. When the pressure relief channel extends in a straight line and passes through the back pressure plate, the fluid flows through the pressure relief channel at a faster speed. When the pressure relief channel extends in a curve and passes through the back pressure plate, the friction between the first support and the pressure relief channel increases, and the flow-blocking component can withstand a larger fluid pressure.

[0023] Optionally, in some technical solutions of this application, the stationary disk may further 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; the back pressure plate and the float plate assembly are located inside the mounting section, and the back pressure plate, the float plate assembly and the mounting section enclose a back pressure cavity.

[0024] In this technical solution, the stationary disc also includes a mounting part, which can cooperate with the back pressure plate and the float plate assembly. The mounting part is set on the side of the first disc body away from the first vortex blade and is arranged along the circumference of the first disc body, so that the first disc body and the mounting part 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 part, and the mounting part 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 part to accommodate the fluid entering and to withstand the pressure generated after the fluid enters the back pressure cavity.

[0025] In some technical solutions of this application, optionally, the back pressure plate includes a plate body and an exhaust section, the exhaust section is disposed on the plate body and arranged along the axial direction of the vortex assembly; the float assembly is sleeved on the exhaust section.

[0026] In this technical solution, the back pressure plate includes a plate body and an exhaust section. The exhaust section is disposed on the plate body and arranged along the axial direction of the vortex assembly. The compressed fluid can move and circulate through the exhaust section on the plate body. By fitting the float assembly onto the exhaust section, the compressed fluid can enter the back pressure cavity located between the float assembly and the back pressure plate. Furthermore, by changing the pressure within the back pressure cavity, the float assembly moves along the exhaust section to maintain the pressure stability within the back pressure cavity and to adaptively adjust to changes in the space generated within the back pressure cavity.

[0027] Optionally, in some technical solutions of this application, the float assembly includes a second support portion, a second positioning portion, a first sealing element, and a second sealing element. A back pressure cavity is formed between the second support portion and the plate body. The second positioning portion is disposed on the side of the second support portion away from the plate body. The first sealing element is disposed between the second positioning portion and the second support portion, and the inner peripheral edge of the first sealing element abuts against the vent portion. The second sealing element is disposed between the second positioning portion and the second support portion, and the outer peripheral edge of the second sealing element abuts against the mounting portion.

[0028] In this technical solution, the float assembly includes a second support portion, a second positioning portion, a first seal, and a second seal. A back pressure chamber is formed between the second support portion and the plate body. The second support portion can move with pressure changes within the back pressure chamber. The second positioning portion is located on the side of the second support portion away from the plate body to limit the movement range of the second support portion and help maintain stable pressure within the back pressure chamber. The first seal is located between the second positioning portion and the second support portion, and its inner peripheral edge abuts against the exhaust portion, so that when the second support portion moves with pressure changes within the back pressure chamber, the first seal can move along with the second support portion. When the second support portion moves relative to the exhaust portion, the first seal, by abutting its inner peripheral edge against the exhaust portion, seals the gap between the second support portion and the exhaust portion, preventing fluid leakage from the back pressure chamber during the movement of the second support portion, thereby ensuring that the back pressure chamber maintains the normal operating pressure required for operation. The second seal is disposed between the second positioning part and the second support part, and its outer peripheral edge abuts against the mounting part. When the second support part moves due to pressure changes within the back pressure chamber, the second seal can move along with it. When the second support part moves relative to the mounting part, the second seal, by abutting its outer peripheral edge against the mounting part, seals the gap between the second support part and the mounting part. This prevents fluid leakage from the back pressure chamber during the movement of the second support part, ensuring that the back pressure chamber maintains the normal operating pressure required for operation.

[0029] Optionally, in some technical solutions of this application, the first sealing element includes a first body and a first sealing part. The first body is annular and disposed between the second positioning part and the second support part. The first sealing part is connected to the first body, arranged along the inner circumference of the first body, and abuts against the exhaust part. The first sealing part extends obliquely from the first body to the exhaust part in a direction away from the stationary disk relative to the axis of the vortex assembly.

[0030] In this technical solution, the first sealing element includes a first body and a first sealing part. The first body supports the first sealing part to achieve a sealing function. The first body is annular to accommodate the space formed between the float assembly and the exhaust part. The first body is positioned between the second positioning part and the second support part. When the second support part moves due to pressure changes in the back pressure chamber, the first body and the first sealing part can move together with the second support part. The first sealing part is connected to the first body, arranged along the inner circumference of the first body, and abuts against the exhaust part. When the second support part moves relative to the exhaust part, the first body supports the first sealing part against the exhaust part, sealing the gap between the second support part and the exhaust part to prevent fluid in the back pressure chamber from leaking from the gap between the second support part and the exhaust part during the movement of the second support part. To ensure that the back pressure chamber maintains the normal operating pressure required for operation, the first sealing part extends obliquely from the first body to the exhaust part away from the stationary disk relative to the axis of the vortex assembly. This allows the first sealing part to rest against the exhaust part in an oblique posture. As the second support part moves the first sealing part relative to the exhaust part, the first sealing part continuously applies radial pressure to the exhaust part to ensure close contact between the first sealing part and the exhaust part. When the pressure in the back pressure chamber is too high, overpressure leakage can occur through the deformation opening of the first sealing part into the exhaust chamber. When the pressure in the back pressure chamber is lower than the pressure in the exhaust chamber, the first sealing part, which rests against the exhaust part in an oblique posture, is pressed tightly against the exhaust part, thereby intercepting the fluid outside the back pressure chamber and preventing it from entering the back pressure chamber and affecting the stability of the pressure inside the back pressure chamber.

[0031] Furthermore, the first body can be a metal ring or a polytetrafluoroethylene ring, and the first sealing part can be a rubber seal.

[0032] Optionally, in some technical solutions of this application, the second seal may further include a second body and a second sealing part. The second body is annular and disposed between the second positioning part and the second support part. The second sealing part is connected to the second body, arranged along the outer periphery of the second body, and abuts against the mounting part. The second sealing part extends obliquely from the second body to the mounting part toward the stationary plate relative to the axis of the vortex assembly.

[0033] In this technical solution, the second sealing element includes a second body and a second sealing part. The second body supports the second sealing part to achieve a sealing function. The second body is annular to accommodate the space formed between the float assembly and the mounting part. The second body is positioned between the second positioning part and the second support part. When the second support part moves due to pressure changes in the back pressure chamber, the second body and the second sealing part can move together with the second support part. The second sealing part is connected to the second body, arranged along the outer periphery of the second body, and abuts against the mounting part. When the second support part moves relative to the mounting part, the second sealing part, supported by the second body, abuts against the mounting part, sealing the gap between the second support part and the mounting part, thus preventing fluid in the back pressure chamber from flowing out during the movement of the second support part. Leakage occurs at the gap between the support and the mounting part, thereby ensuring that the back pressure chamber can always maintain the normal operating pressure required for operation. The second sealing part extends obliquely from the second body to the mounting part towards the stationary plate relative to the axis of the vortex assembly, so that the second sealing part can abut against the mounting part in an oblique posture. During the movement of the second sealing part relative to the mounting part driven by the second support part, the second sealing part can continuously apply radial pressure to the mounting part to ensure close contact between the second sealing part and the mounting part. When the pressure in the back pressure chamber is too high, the second sealing part, which abuts against the mounting part in an oblique posture, is pressed tightly against the mounting part due to pressure, thereby intercepting the fluid in the back pressure chamber and preventing the fluid in the back pressure chamber from entering the intake chamber, thus keeping the pressure in the intake chamber stable.

[0034] Furthermore, the second body can be a metal ring or a polytetrafluoroethylene ring, and the second sealing part can be a rubber seal.

[0035] In some technical solutions of this application, optionally, the pressure relief channel is a through hole penetrating the back pressure plate, and the diameter of the pressure relief channel is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0036] In this technical solution, the pressure relief channel is a through hole that penetrates the back pressure plate, allowing fluid to flow from the back pressure chamber to the bypass chamber through the pressure relief channel. The diameter of the pressure relief channel is greater than or equal to 0.3 mm and less than or equal to 0.5 mm, which can ensure that the fluid maintains a continuous and stable small flow rate when passing through the pressure relief channel.

[0037] 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.

[0038] 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.

[0039] Furthermore, both the first and second vortex blades are spiral-shaped, and the first and second vortex blades mesh with each other.

[0040] Specifically, the pressure inside the multiple compression chambers is different.

[0041] In some technical solutions of this application, optionally, the vortex assembly also includes a bypass pipeline and a solenoid valve. The bypass pipeline is connected to the bypass cavity and to one of the multiple compression cavities. The solenoid valve is disposed on the bypass pipeline to control the opening or closing of the bypass pipeline.

[0042] In this technical solution, the scroll assembly is also equipped with a bypass pipeline and a solenoid valve. The bypass pipeline is interconnected with the bypass chamber, and fluid enters the bypass chamber through the bypass pipeline. The bypass pipeline is also connected to one of the multiple compression chambers, allowing external fluid to enter the compression chamber through the bypass pipeline for compression. The solenoid valve is located 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 achieve the variable capacity function within the compressor.

[0043] Specifically, the bypass pipe and the first back pressure port are respectively connected to different compression chambers in the multiple compression chambers to realize the introduction and compression of fluid respectively.

[0044] The second aspect of this utility model provides a compressor including a scroll assembly as described in any of the above-described technical solutions. Since the compressor includes a scroll assembly as described in any of the above-described technical solutions, it possesses all the beneficial effects of the scroll assembly as described in any of the above-described technical solutions, which will not be elaborated further here.

[0045] Specifically, the compressor in this technical solution is a scroll compressor.

[0046] The third aspect of this utility model provides a refrigeration device, 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.

[0047] Since the refrigeration equipment includes the scroll assembly of any of the above-mentioned technical solutions or the compressor of any of the above-mentioned technical solutions, the refrigeration equipment has all the beneficial effects of the scroll assembly of any of the above-mentioned technical solutions or the compressor of any of the above-mentioned technical solutions, which will not be elaborated here.

[0048] Specifically, the refrigeration equipment in this technical solution includes refrigerators, air conditioners, freezers, wine cabinets, or refrigerated display cases, etc.

[0049] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0050] 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:

[0051] Figure 1 One of the cross-sectional views of a vortex assembly according to an embodiment of the present invention is shown;

[0052] Figure 2 A second cross-sectional view of a vortex assembly according to an embodiment of the present invention is shown;

[0053] Figure 3 It shows Figure 2 A partial enlarged view of the vortex assembly at point H according to an embodiment of the present invention;

[0054] Figure 4 A cross-sectional view of a compressor according to an embodiment of the present invention is shown.

[0055] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0056] 100 Scroll assembly, 110 stationary disc, 112 first disc body, 114 first scroll blade, 116 first back pressure hole, 118 second back pressure hole, 120 back pressure plate, 122 plate body, 123 positioning groove, 124 exhaust section, 126 bypass cavity, 128 pressure relief channel, 130 float assembly, 132 second support section, 134 second positioning section, 136 first seal, 138 first body, 140 first sealing section, 1 42 Second seal, 144 Second body, 146 Second sealing part, 148 Back pressure chamber, 150 Mounting part, 160 Moving disc, 162 Second disc body, 164 Second scroll blade, 168 Compression chamber, 170 Bypass pipeline, 172 Solenoid valve, 174 Flow-blocking assembly, 176 First support part, 177 Flow part, 178 Flow-blocking component, 179 First positioning part, 180 Limiting part, 181 Hole, 200 Compressor. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] The following reference Figures 1 to 4 This invention describes a scroll assembly, a compressor, and a refrigeration device according to some embodiments of the present invention.

[0060] In embodiments of this utility model, such as Figures 1 to 3 As shown, a vortex assembly 100 is provided, including 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 114, with the first vortex blade 114 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 114, and a bypass cavity 126 is provided between the back pressure plate 120 and the first disk body 112. The back pressure plate 120 is provided with a pressure relief channel 128, and the first end of the pressure relief channel 128 is connected to the bypass cavity 126. 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 148 is provided between the float assembly 130 and the back pressure plate 120, with the back pressure cavity 148 connected to the second end of the pressure relief channel 128.

[0061] In this embodiment, such as Figures 1 to 4As shown, the scroll assembly 100 includes a stationary disc 110, a back pressure plate 120, and a float assembly 130. The stationary disc 110 includes a first disc body 112 and a first scroll blade 114. The first scroll blade 114 is disposed on the first disc body 112 and can rotate with the rotation of 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 scroll blade 114, which facilitates the back pressure chamber 148 to apply pressure to the first disc body 112. A bypass chamber 126 is provided between the back pressure plate 120 and the first disc body 112. By providing the bypass chamber 126 and by changing the pressure in the bypass chamber 126, the compressor 200 can achieve variable capacity function and also provide a pressure relief space for the fluid in the scroll assembly 100. A pressure relief channel 128 is provided on the back pressure plate 120. The first end of the pressure relief channel 128 is connected to the bypass cavity 126, allowing high-pressure fluid to enter the bypass cavity 126 through the pressure relief channel 128. The float assembly 130 is disposed on the side of the back pressure plate 120 away from the first disc body 112, so that the back pressure plate 120 is located between the float assembly 130 and the first disc body 112. A back pressure cavity 148 is provided between the float assembly 130 and the back pressure plate 120. The back pressure cavity 148 is connected to the second end of the pressure relief channel 128. The fluid inside the back pressure cavity 148 can flow to the outside of the back pressure cavity 148 through the second end of the pressure relief channel 128. The back pressure cavity 148 applies pressure generated in the direction from the stationary disc 110 to the moving disc 160 on the first disc body 112, so that the stationary disc 110 and the moving disc 160 cooperate, thereby achieving the sealing between the stationary disc 110 and the moving disc 160. By providing a pressure relief channel 128 on the back pressure plate 120 that allows for continuous micro-leakage, the back pressure chamber 148 can continuously release pressure to a small extent into the bypass chamber 126 through the pressure relief channel 128. This allows the fluid in the back pressure chamber 148 to leak into the bypass chamber 126 when the pressure in the back pressure chamber 148 exceeds a preset value, continuously reducing the pressure in the back pressure chamber 148. This prevents the pressure in the back pressure chamber 148 from being far higher than the required pressure, avoiding an increase in the axial force between the moving plate 160 and the stationary plate 110 due to excessive pressure. Consequently, it reduces 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, reducing the noise generated by the scroll assembly 100 during operation in the compressor 200. This ensures that the compressor 200 can operate stably under various operating conditions and improves the reliability and lifespan of the compressor 200.

[0062] Specifically, such as Figure 1 As shown, the side of the first disk 112 away from the first vortex blade 114 is A.

[0063] Specifically, such as Figure 1 As shown, the side of the back pressure plate 120 away from the first disc 112 is B.

[0064] Specifically, such as Figure 1 As shown, the first end of the pressure relief channel 128 is C.

[0065] Specifically, such as Figure 1 As shown, the second end of the pressure relief channel 128 is D.

[0066] In some embodiments of this application, optionally, Figure 1 , Figure 2 and Figure 4 As shown, a first back pressure hole 116 is provided on the first disc body 112, and the first back pressure hole 116 penetrates the first disc body 112; a second back pressure hole is provided on the back pressure plate, and the second back pressure hole communicates with the first back pressure hole and with the back pressure cavity 148; the fluid flow cross-sectional area of ​​the first back pressure hole 116 and / or the second back pressure hole 118 is larger than the fluid flow cross-sectional area of ​​the pressure relief channel 128.

[0067] In this embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, a first back pressure hole 116 is formed on the first disc 112, and the first back pressure hole 116 penetrates the first disc 112 and is connected to the back pressure cavity 148. This allows the fluid in the compression cavity of the vortex assembly 100 to enter the back pressure cavity 148 under pressure through the first back pressure hole 116, thereby creating pressure. The fluid flow cross-sectional area of ​​the first back pressure hole 116 is larger than the fluid flow cross-sectional area of ​​the pressure relief channel 128. This ensures that the flow rate of the fluid entering the back pressure cavity 148 through the first back pressure hole 116 is greater than the flow rate of the fluid entering the bypass cavity 126 through the pressure relief channel 128. This maintains that the pressure in the back pressure cavity 148 is always greater than the pressure in the bypass cavity 126, ensuring that the back pressure cavity 148 can always maintain the normal operating pressure required for operation when undergoing micro-pressure relief through the pressure relief channel 128.

[0068] Specifically, the fluid flow cross-sectional area of ​​the first back pressure hole 116 is the area of ​​the radial cross-section of the first back pressure hole 116.

[0069] The fluid flow cross-sectional area of ​​the pressure relief channel 128 is the area of ​​the radial cross-section of the pressure relief channel 128.

[0070] In some embodiments of this application, optionally, such as Figure 2 and Figure 3 As shown, the vortex assembly 100 also includes a flow-blocking assembly 174, which is disposed within the pressure relief channel 128.

[0071] In this embodiment, such as Figure 2 and Figure 3As shown, the vortex assembly 100 also includes a flow-blocking assembly 174. The flow-blocking assembly 174 is disposed in the pressure relief channel 128. The flow-blocking assembly 174 can enable the fluid to flow from the back pressure chamber 148 to the bypass chamber 126, allowing the fluid to flow from the back pressure chamber 148 to the bypass chamber 126.

[0072] In some embodiments of this application, optionally, such as Figure 2 and Figure 3 As shown, the flow-blocking assembly 174 includes a first support portion 176 and a flow-blocking component 178. The first support portion 176 is disposed in the pressure relief channel 128 and connected to the back pressure plate 120. The flow-blocking component 178 is disposed in the first support portion 176. The flow-blocking component has a plurality of holes 181, which connect to both sides of the pressure relief channel 128.

[0073] In this embodiment, such as Figure 2 and Figure 3 As shown, the flow-blocking assembly 174 further includes a first support portion 176 and a flow-blocking component 178. The first support portion 176 is disposed within the pressure relief channel 128 and connected to the back pressure plate 120, allowing the first support portion 176 to be fixed within the back pressure plate 120, enabling fluid to flow through the back pressure plate 120 via the first support portion 176. The flow-blocking component 178 is disposed within the first support portion 176, allowing fluid to flow within the flow-blocking component 178. The flow-blocking component 178 has multiple holes 181, which connect both sides of the pressure relief channel 128, thereby blocking the flow of fluid passing through the flow-blocking component 178. The multiple holes 181 cause the fluid to suddenly encounter resistance in the direction of travel when passing through the flow-blocking component 178, thus significantly slowing down the flow rate, allowing the fluid flowing out of the back pressure chamber 148 to continuously enter the bypass chamber 126 through the pressure relief channel 128 at a small flow rate. By placing the flow-blocking component 178 inside the first support portion 176, the pressure in the back pressure chamber 148 can be continuously reduced through the pressure relief channel 128. This reduces 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, thereby reducing the noise generated by the scroll assembly 100 when it is running in the compressor 200, so as to ensure that the compressor 200 can operate stably under various operating conditions.

[0074] In some embodiments of this application, optionally, such as Figure 3 As shown, multiple holes 181 are interconnected.

[0075] In this embodiment, such as Figure 3 As shown, by connecting multiple holes 181 to each other, the fluid will change its direction of movement multiple times when passing through the inside of the flow-blocking component 178, thereby further improving the effect of blocking the fluid passing through the flow-blocking component 178.

[0076] In some embodiments of this application, optionally, such as Figure 3 As shown, the back pressure plate 120 is provided with a positioning groove 123, which is arranged circumferentially along the pressure relief channel 128 and located on the side of the pressure relief channel 128 away from the first disc body 112; the first support part 176 includes a flow part 177 and a first positioning part 179. The flow part 177 is disposed in the pressure relief channel 128, and the first positioning part 179 is connected to the flow part 177 and is located in the positioning groove 123.

[0077] In this embodiment, such as Figure 3 As shown, the back pressure plate 120 is provided with a positioning groove 123. The positioning groove 123 is arranged circumferentially along the pressure relief channel 128 and is located on the side of the pressure relief channel 128 away from the first disc 112. It can position the first positioning part 179 provided in the positioning groove 123, preventing it from deviating from the predetermined position during the operation of the vortex assembly 100. The first support part 176 includes a flow part 177 and a first positioning part 179. The flow part 177 is provided in the pressure relief channel 128, and the first positioning part 179 is connected to the flow part 177. The first positioning part 179 is located in the positioning groove 123. The first positioning part 179 ensures that the flow part 177 is always located in the pressure relief channel 128, preventing the flow part 177 from being deviated from the predetermined position due to fluid impact, and further improving the flow obstruction effect of the flow obstruction assembly 174.

[0078] In some embodiments of this application, optionally, such as Figure 3 As shown, the first support portion 176 also includes a limiting portion 180, which is connected to the flow portion 177 and protrudes from the inner wall of the flow portion 177; the flow-blocking component 178 is located inside the flow portion 177 and abuts against the limiting portion 180.

[0079] In this embodiment, such as Figure 3 As shown, the first support portion 176 also includes a limiting portion 180, which is connected to the flow portion 177 and protrudes from the inner wall of the flow portion 177 to restrict the upward movement of the flow-blocking member 178. The flow-blocking member 178 is located inside the flow portion 177 and abuts against the limiting portion 180. When fluid passes through, the flow-blocking member 178 is fixed inside the flow portion 177 by the friction generated by abutting against the limiting portion 180 to prevent it from falling off.

[0080] In some embodiments of this application, optionally, such as Figure 2 and Figure 3 As shown, the pressure relief channel 128 extends in a straight line or curve, passing through the back pressure plate 120.

[0081] In this embodiment, such as Figure 2 and Figure 3As shown, the pressure relief channel 128 can extend in a straight line and pass through the back pressure plate 120, or it can extend in a curve and pass through the back pressure plate 120. When the pressure relief channel 128 extends in a straight line and passes through the back pressure plate 120, the fluid flows through the pressure relief channel 128 at a faster speed. When the pressure relief channel 128 extends in a curve and passes through the back pressure plate 120, the friction between the first support 176 and the pressure relief channel 128 increases, and the flow obstruction component 174 can withstand a larger fluid pressure.

[0082] In some embodiments of this application, optionally, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the stationary disc 110 also includes a second support portion 132, and a mounting portion 150 is disposed on the side of the first disc body 112 away from the first vortex blade 114, arranged circumferentially along the first disc body 112; a back pressure plate 120 and a float assembly 130 are disposed within the mounting portion 150, and the back pressure plate 120, the float assembly 130, and the mounting portion 150 enclose a back pressure cavity 148; the back pressure plate 120 includes a plate body 122 and an exhaust portion 124, the exhaust portion 124 is disposed on the plate body 122 and arranged axially along the vortex assembly 100; the float assembly 130 is sleeved on the exhaust portion 124; the float assembly 130 includes a mounting portion 150 and a second positioning portion 13. 4. A first sealing element 136 and a second sealing element 142; a back pressure cavity 148 is formed between the second support portion 132 and the plate body 122; a second positioning portion 134 is disposed on the side of the second support portion 132 away from the plate body 122; the first sealing element 136 is disposed between the second positioning portion 134 and the second support portion 132, and the inner peripheral edge of the first sealing element 136 abuts against the exhaust portion 124; the second sealing element 142 is disposed between the second positioning portion 134 and the second support portion 132, and the outer peripheral edge of the second sealing element 142 abuts against the mounting portion 150.

[0083] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the stationary disc 110 also includes a mounting portion 150, which can cooperate with the back pressure plate 120 and the float assembly 130. The mounting portion 150 is located on the side of the first disc body 112 away from the first vortex blade 114 and is arranged circumferentially along the first disc body 112, so that the first disc body 112 and the mounting portion 150 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 150, and the mounting portion 150 is sealed to the back pressure plate 120 and the float assembly 130. At this time, a back pressure cavity 148 is formed within the space enclosed by the back pressure plate 120, the float assembly 130, and the mounting portion 150 to accommodate fluid entry and withstand the pressure generated after the fluid enters the back pressure cavity 148. The back pressure plate 120 includes a plate body 122 and an exhaust portion 124 for exhaust. Part 124 is disposed on plate 122 and arranged along the axial direction of vortex assembly 100. The compressed fluid can move and circulate through exhaust part 124 on plate 122. The float assembly 130 is sleeved on exhaust part 124, so that the compressed fluid can enter the back pressure cavity 148 located between float assembly 130 and back pressure plate 120. The float assembly 130 moves along exhaust part 124 due to pressure changes in back pressure cavity 148 to maintain pressure stability in back pressure cavity 148 and to adaptively adjust to spatial changes in back pressure cavity 148. Float assembly 130 includes second support part 132, second positioning part 134, first seal 136 and second seal 142. Back pressure cavity 148 is formed between second support part 132 and plate 122. Second support part 132 can move with pressure changes in back pressure cavity 148. The second positioning part 134 is disposed on the side of the second support part 132 away from the plate 122 to limit the movement range of the second support part 132 and help maintain stable pressure in the back pressure chamber 148. The first seal 136 is disposed between the second positioning part 134 and the second support part 132, and its inner peripheral edge abuts against the exhaust part 124, so that when the second support part 132 moves with the pressure change in the back pressure chamber 148, the first seal 136 can move with the second support part 132. When the second support part 132 moves relative to the exhaust part 124, the first seal 136 can seal the gap between the second support part 132 and the exhaust part 124 by abutting its inner peripheral edge against the exhaust part 124, so as to prevent fluid in the back pressure chamber 148 from leaking from the gap between the second support part 132 and the exhaust part 124 during the movement of the second support part 132, thereby ensuring that the back pressure chamber 148 can always maintain the normal operating pressure required for operation.The second seal 142 is disposed between the second positioning part 134 and the second support part 132, and its outer peripheral edge abuts against the mounting part 150, so that when the second support part 132 moves with the pressure change in the back pressure chamber 148, the second seal 142 can move together with the second support part 132. When the second support part 132 moves relative to the mounting part 150, the second seal 142 can seal the gap between the second support part 132 and the mounting part 150 by abutting its outer peripheral edge against the mounting part 150, so as to prevent the fluid in the back pressure chamber 148 from leaking from the gap between the second support part 132 and the mounting part 150 during the movement of the second support part 132, so that the back pressure chamber 148 can always maintain the normal operating pressure required for operation.

[0084] Specifically, such as Figure 1 As shown, the side of the second support 132 away from the plate 122 is E.

[0085] Specifically, such as Figure 1 As shown, the circumferential direction of the first disk 112 is direction F.

[0086] In some embodiments of this application, optionally, such as Figure 1 and Figure 2 As shown, the first sealing member 136 includes a first body 138 and a first sealing portion 140. The first body 138 is annular and disposed between the second positioning portion 134 and the second support portion 132. The first sealing portion 140 is connected to the first body 138, arranged along the inner periphery of the first body 138, and abuts against the exhaust portion 124. The first sealing portion 140 extends obliquely from the first body 138 to the exhaust portion 124 in a direction away from the stationary disk 110 relative to the axis of the vortex assembly 100. The second sealing member 142 also includes a second body 144 and a second sealing portion 146. The second body 144 is annular and disposed between the second positioning portion 134 and the second support portion 132. The second sealing portion 146 is connected to the second body 144, arranged along the outer periphery of the second body 144, and abuts against the mounting portion 150. The second sealing portion 146 extends obliquely from the second body 144 to the mounting portion 150 in a direction close to the stationary disk 110 relative to the axis of the vortex assembly 100.

[0087] In this embodiment, such as Figure 1 and Figure 2As shown, the first sealing element 136 includes a first body 138 and a first sealing portion 140. The first body 138 supports the first sealing portion 140 to achieve a sealing function. The first body 138 is annular to accommodate the space formed between the float assembly 130 and the exhaust portion 124. The first body 138 is positioned between the second positioning portion 134 and the second support portion 132. When the second support portion 132 moves due to pressure changes in the back pressure chamber 148, the first body 138 and the first sealing portion 140 can move together with the second support portion 132. The first sealing portion 140 is connected to the first body 138, arranged along the inner circumference of the first body 138, and abuts against the exhaust portion 124. When the exhaust section 124 moves relative to the first body 138, the first sealing part 140 is supported by the first body 138 and abuts against the exhaust section 124, sealing the gap between the second support part 132 and the exhaust section 124. This prevents fluid in the back pressure chamber 148 from leaking through the gap between the second support part 132 and the exhaust section 124 during the movement of the second support part 132, thereby ensuring that the back pressure chamber 148 maintains the normal operating pressure required for operation. The first sealing part 140 extends obliquely from the first body 138 to the exhaust section 124 in a direction away from the stationary disc 110 relative to the axis of the vortex assembly 100, allowing the first sealing part 140 to abut against the exhaust section 124 in an oblique posture. During the movement of the first sealing part 140 relative to the exhaust part 124, the first sealing part 140 can continuously apply radial pressure to the exhaust part 124 to ensure tight contact between the first sealing part 140 and the exhaust part 124. When the pressure in the back pressure chamber 148 is too high, overpressure leakage can occur through the deformation opening of the first sealing part 140 into the exhaust chamber. When the pressure in the back pressure chamber 148 is less than the pressure in the exhaust chamber, the first sealing part 140, which is inclined and abuts against the exhaust part 124, is tightly pressed against the exhaust part 124 due to pressure, thereby intercepting the fluid outside the back pressure chamber 148 and preventing it from entering the back pressure chamber 148 and affecting the stability of the pressure inside the back pressure chamber 148. The second sealing element 142 covers... The assembly includes a second body 144 and a second sealing portion 146. The second body 144 supports the second sealing portion 146 to achieve a sealing function. The second body 144 is annular to accommodate the space formed between the float assembly 130 and the mounting portion 150. The second body 144 is positioned between the second positioning portion 134 and the second support portion 132. When the second support portion 132 moves due to pressure changes within the back pressure chamber 148, the second body 144 and the second sealing portion 146 can move together with the second support portion 132. The second sealing portion 146 is connected to the second body 144, arranged along the outer periphery of the second body 144, and abuts against the mounting portion 150. When the second support portion 132 moves relative to the mounting portion 150...The second sealing part 146 is supported by the second body 144 and abuts against the mounting part 150, which can seal the gap between the second support part 132 and the mounting part 150. This prevents fluid in the back pressure chamber 148 from leaking from the gap between the second support part 132 and the mounting part 150 during the movement of the second support part 132, thereby ensuring that the back pressure chamber 148 can always maintain the normal operating pressure required for operation. The second sealing part 146 extends obliquely from the second body 144 to the mounting part 150 towards the stationary plate 110 relative to the axis of the vortex assembly 100, so that the second sealing part 146 can be in an oblique posture. The second sealing part 146, positioned at an angle, abuts against the mounting part 150. During the movement of the second sealing part 146 relative to the mounting part 150 driven by the second support part 132, the second sealing part 146 continuously applies radial pressure to the mounting part 150 to ensure tight contact between the second sealing part 146 and the mounting part 150. When the pressure in the back pressure chamber 148 becomes excessive, the second sealing part 146, which is tilted and abuts against the mounting part 150, adheres tightly to the mounting part 150 due to pressure, thereby intercepting the fluid in the back pressure chamber 148 and preventing it from entering the suction chamber, thus maintaining a stable pressure in the suction chamber.

[0088] Furthermore, the second body 144 can be a metal ring or a polytetrafluoroethylene ring, and the second sealing part 146 can be a rubber seal.

[0089] Specifically, such as Figure 1 As shown, the axis of the vortex assembly is G.

[0090] Furthermore, the first body 138 may be a metal ring or a polytetrafluoroethylene ring, and the first sealing part 140 may be a rubber seal.

[0091] In some embodiments of this application, optionally, the pressure relief channel 128 is a through hole penetrating the back pressure plate 120, and the diameter of the pressure relief channel 128 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0092] In this embodiment, the pressure relief channel 128 is a through hole penetrating the back pressure plate 120, allowing fluid to flow from the back pressure chamber 148 to the bypass chamber 126 through the pressure relief channel 128. The diameter of the pressure relief channel 128 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm, which can ensure that the fluid maintains a continuous and stable small flow rate when passing through the pressure relief channel 128.

[0093] In some embodiments of this application, optionally, such as Figure 4As shown, the vortex assembly 100 also includes a moving disk 160, a bypass pipe 170, and a solenoid valve 172. The moving disk 160 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 114. The first vortex blade 114 and the second vortex blade 164 enclose a plurality of compression chambers 168. The bypass pipe 170 is connected to the bypass chamber 126 and to one of the compression chambers 168. The solenoid valve 172 is disposed on the bypass pipe 170 to control the opening or closing of the bypass pipe 170.

[0094] In this embodiment, such as Figure 4 As shown, the vortex assembly 100 also includes a movable disk 160. A second disk body 162 and a second vortex blade 164 are disposed on the movable 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 114. When the second vortex blade 164 cooperates with the first vortex blade 114, the second vortex blade 164 can move relative to the first vortex blade 114, thus creating multiple compression chambers 168 between the first vortex blade 114 and the second vortex blade 164. This allows the fluid entering the compression chambers 168 to be compressed through the cooperation of the stationary disk 110 and the movable disk 160. Compression is performed by connecting the bypass pipe 170 to the bypass chamber 126. Fluid enters the bypass chamber 126 through the bypass pipe 170. The bypass pipe 170 is also connected to one of the multiple compression chambers 168, allowing external fluid to enter the compression chamber 168 through the bypass pipe 170 for compression. The solenoid valve 172 is installed on the bypass pipe 170 to control its opening or closing. It can continuously supply fluid to the bypass pipe 170 or block fluid outside the bypass pipe 170 according to the actual needs of the scroll assembly 100 during operation. The solenoid valve 172 can change the volume ratio of the compressor 200, thereby changing the displacement of the compressor 200 to achieve the variable capacity function within the compressor 200.

[0095] Specifically, the bypass pipe 170 and the first back pressure hole 116 are respectively connected to different compression chambers 168 among the multiple compression chambers 168, so as to realize the introduction and compression of fluid respectively.

[0096] Furthermore, both the first vortex blade 114 and the second vortex blade 164 are spiral-shaped, and the first vortex blade 114 and the second vortex blade 164 mesh with each other.

[0097] Specifically, the internal pressures of the multiple compression chambers 168 are different.

[0098] In some embodiments of this application, a compressor 200 is provided, including a scroll assembly 100 as described in any of the above embodiments.

[0099] Since the compressor 200 includes the scroll assembly 100 of any of the above embodiments, the compressor 200 has all the beneficial effects of the scroll assembly 100 of any of the above embodiments, which will not be repeated here.

[0100] Specifically, the compressor 200 in this embodiment is a scroll compressor.

[0101] 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.

[0102] Since the refrigeration device includes the scroll assembly 100 of any of the above embodiments or the compressor 200 of any of the above embodiments, the refrigeration device has all the beneficial effects of the scroll assembly 100 of any of the above embodiments or the compressor 200 of any of the above embodiments, which will not be repeated here.

[0103] Specifically, the refrigeration equipment in this embodiment can be a refrigerator, air conditioner, freezer, wine cabinet, or refrigerated display case, etc.

[0104] 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.

[0105] Since the vehicle includes the scroll assembly 100 of any of the above embodiments or the compressor 200 of any of the above embodiments, the vehicle has all the beneficial effects of the scroll assembly 100 of any of the above embodiments or the compressor 200 of any of the above embodiments, which will not be repeated here.

[0106] Furthermore, the vehicle in this embodiment can be a traditional fuel vehicle or a new energy vehicle.

[0107] Specifically, new energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0108] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. 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 accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended 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 limitations on this utility model. 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 utility model can be understood based on the specific circumstances described above.

[0109] In the claims, description, and drawings of this utility model, 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 this utility model. In the claims, description, and drawings of this utility model, 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.

[0110] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

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. A bypass cavity is provided between the back pressure plate and the first disk body. The back pressure plate is provided with a pressure relief channel. The first end of the pressure relief channel is connected to the bypass cavity. A float assembly is disposed on the side of the back pressure plate away from the first disc body. A back pressure cavity is provided between the float assembly and the back pressure plate, and the back pressure cavity is connected to the second end of the pressure relief channel.

2. The vortex assembly according to claim 1, characterized in that, The first disk body is provided with a first back pressure hole, which penetrates the first disk body; The back pressure plate is provided with a second back pressure hole, which communicates with the first back pressure hole and with the back pressure cavity. The fluid flow cross-sectional area of ​​the first back pressure hole and / or the second back pressure hole is greater than the fluid flow cross-sectional area of ​​the pressure relief channel.

3. The vortex assembly according to claim 1, characterized in that, Also includes: A flow-blocking component is disposed within the pressure relief channel.

4. The vortex assembly according to claim 3, characterized in that, The flow-blocking component includes: A first support portion is disposed within the pressure relief channel and connected to the back pressure plate; A flow-blocking component is disposed within the first support portion; The flow-blocking component has multiple holes, which connect the two sides of the pressure relief channel.

5. The vortex assembly according to claim 4, characterized in that, The multiple holes are interconnected.

6. The vortex assembly according to claim 4, characterized in that, The back pressure plate is provided with a positioning groove, which is arranged circumferentially along the pressure relief channel and located on the side of the pressure relief channel away from the first disc. The first support portion includes a flow portion and a first positioning portion. The flow portion is disposed within the pressure relief channel, and the first positioning portion is connected to the flow portion and is located within the positioning groove.

7. The vortex assembly according to claim 6, characterized in that, The first support portion further includes: A limiting part, which is connected to the flow part and protrudes from the inner wall of the flow part; The flow-blocking component is located within the flow section and abuts against the limiting portion.

8. The vortex assembly according to claim 1, characterized in that, The pressure relief channel extends in a straight line or curve, passing through the back pressure plate.

9. The vortex assembly according to claim 1, characterized in that, The stationary disk also includes a mounting part, which is disposed on the side of the first disk body away from the first vortex blade and arranged circumferentially along the first disk body; The back pressure plate and the float assembly are disposed within the mounting portion, and the back pressure plate, the float assembly, and the mounting portion enclose the back pressure cavity; The back pressure plate includes a plate body and an exhaust section, wherein the exhaust section is disposed on the plate body and arranged along the axial direction of the vortex assembly; The float assembly is sleeved on the exhaust section; The float assembly includes a second support part, a second positioning part, a first sealing element, and a second sealing element; The back pressure cavity is formed between the second support and the plate. The second positioning part is disposed on the side of the second support part away from the plate body; The first sealing element is disposed between the second positioning part and the second support part, and the inner peripheral edge of the first sealing element abuts against the exhaust part; The second seal is disposed between the second positioning part and the second support part, and the outer peripheral edge of the second seal abuts against the mounting part.

10. The vortex assembly according to claim 9, characterized in that, The first sealing element includes a first body and a first sealing portion; The first body is ring-shaped and is disposed between the second positioning part and the second support part; The first sealing part is connected to the first body, arranged along the inner circumference of the first body, and abuts against the exhaust part; Wherein, the first sealing portion extends obliquely from the first body to the exhaust portion in a direction away from the stationary disc relative to the axis of the vortex assembly; The second seal includes a second body and a second sealing portion; The second body is ring-shaped and is disposed between the second positioning part and the second support part; The second sealing part is connected to the second body, arranged along the outer periphery of the second body, and abuts against the mounting part; The second sealing portion extends obliquely relative to the axis of the vortex assembly from the second body to the mounting portion in a direction close to the stationary disc.

11. The vortex assembly according to any one of claims 1 to 10, characterized in that, The pressure relief channel is a through hole penetrating the back pressure plate, and the diameter of the pressure relief channel is greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

12. The vortex assembly according to any one of claims 1 to 10, 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. A bypass pipeline, which is connected to the bypass cavity and to at least one of the plurality of compression cavities; A solenoid valve is disposed in the bypass pipeline to control the opening or closing of the bypass pipeline.

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

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

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