Scroll assembly, compressor and refrigeration apparatus

Abstract

The utility model provides a kind of scroll assembly, compressor and refrigeration equipment, static disc is provided with first back pressure hole and second back pressure hole, first back pressure hole and second back pressure hole are communicated with compression cavity, the pressure at first back pressure hole is less than the pressure at second back pressure hole, back pressure plate is located at the side of static disc away from moving disc, float plate assembly is set to the side of back pressure plate away from static disc, first back pressure hole and second back pressure hole are communicated with back pressure cavity, first valve is set to static disc, can slide relative to static disc, to control the on-off of first back pressure hole and second back pressure hole;When compressor works with first load, first back pressure hole is connected compression cavity and back pressure cavity, second back pressure hole disconnects compression cavity and back pressure cavity;When compressor works with second load, first back pressure hole disconnects compression cavity and back pressure cavity, second back pressure hole is connected compression cavity and back pressure cavity, second load is less than first load. By setting first valve, avoid first back pressure hole and second back pressure hole simultaneously be connected.

Description

Technical Field

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

[0002] Currently, in related technologies, the compressor internally incorporates a scroll assembly, which includes a stationary plate, a back pressure plate, and a float plate. A back pressure chamber exists between the back pressure plate and the float plate, communicating with two back pressure holes on the stationary plate. These two back pressure holes are also connected to different compression chambers. Two control valves can be used to control the opening or closing of the two back pressure holes to meet the back pressure requirements of the scroll assembly under different load conditions. However, if one control valve fails while the other is open, there is a probability that both back pressure holes will be open simultaneously, affecting the compression efficiency of the refrigerant in the compression chamber and impacting the normal operation of the compressor. 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 this, the first aspect of the present invention provides a scroll assembly for use in a compressor. The scroll assembly includes a moving disc, a stationary disc, a back pressure plate, a float assembly, and a first valve. The stationary disc meshes with the moving disc, and a compression chamber is provided between the stationary disc and the moving disc. The stationary disc is provided with a first back pressure hole and a second back pressure hole, both of which communicate with the compression chamber. The pressure at the first back pressure hole is less than the pressure at the second back pressure hole. The back pressure plate is located on the side of the stationary disc away from the moving disc. The float assembly is located on the side of the back pressure plate away from the stationary disc, and a back pressure exists between the float assembly and the back pressure plate. The compressor has a compressor chamber, and both the first back pressure port and the second back pressure port are connected to the back pressure chamber. The first valve is located on the stationary plate and can slide relative to the stationary plate to control the opening and closing of the first back pressure port and the second back pressure port. When the compressor is operating at a first load, the first valve is in the first position relative to the stationary plate, the first back pressure port connects the compressor chamber and the back pressure chamber, and the second back pressure port disconnects the compressor chamber and the back pressure chamber. When the compressor is operating at a second load, the first valve is in the second position relative to the stationary plate, the first back pressure port disconnects the compressor chamber and the back pressure chamber, and the second back pressure port connects the compressor chamber and the back pressure chamber. The second load is less than the first load.

[0008] The present application provides a scroll assembly for use in a compressor. The scroll assembly includes a moving disc, a stationary disc, a back pressure plate, a float assembly, and a first valve. The stationary disc meshes with the moving disc, and there is a compression chamber between the stationary disc and the moving disc. The relative motion between the moving disc and the stationary disc changes the volume of the compression chamber. As the moving disc revolves, the refrigerant in the compression chamber can be compressed.

[0009] The stationary plate is provided with a first back pressure hole and a second back pressure hole, both of which are connected to the compression chamber. The pressure at the first back pressure hole is less than the pressure at the second back pressure hole. The back pressure plate is located on the side of the stationary plate away from the moving plate. The float plate assembly is located on the side of the back pressure plate away from the stationary plate. There is a back pressure chamber between the float plate assembly and the back pressure plate. Both the first and second back pressure holes are connected to the back pressure chamber. By controlling the opening and closing of the first and second back pressure holes respectively, the pressure in the back pressure chamber can be adjusted, thereby adjusting the axial force between the moving plate and the stationary plate, ensuring the sealing performance and operating efficiency of the compressor.

[0010] The first valve, located on the stationary plate, slides relative to it to control the opening and closing of the first and second back pressure orifices. This first valve improves the stability of the switching between the first and second back pressure orifices within the compressor, thus enhancing compressor performance. Using a single first valve to control the opening and closing of both orifices reduces the number of control valves, simplifies the internal structure of the scroll assembly, and lowers production costs. Furthermore, the sliding motion of the first valve relative to the stationary plate simplifies the internal piping structure of the scroll assembly, improving its operational stability. During compressor operation, depending on the load, the first valve can simultaneously control the opening and closing of the first and second back pressure orifices, or vice versa, preventing simultaneous opening of both orifices and thus preventing cross-contamination between the compression chambers, improving compression efficiency and overall compressor performance.

[0011] When the compressor operates at the first load, the first valve is in the first position relative to the stationary plate. The first back pressure port connects the compression chamber and the back pressure chamber, while the second back pressure port disconnects them. Since both the first and second back pressure ports are connected to the compression chamber, the pressure at the first back pressure port is lower than the pressure at the second back pressure port. Furthermore, the second load is lower than the first load. Therefore, by controlling the first back pressure port to connect the compression chamber and the back pressure chamber and controlling the second back pressure port to close them, refrigerant is delivered to the back pressure chamber through the lower-pressure first back pressure port. This relatively reduces the internal pressure of the back pressure chamber, thereby reducing the axial force of the back pressure plate on the stationary plate. This reduces the axial force between the moving and stationary plates, decreases wear between them, extends the compressor's service life, and improves safety.

[0012] When the compressor operates at the second load, the first valve is in the second position relative to the stationary plate. The first back pressure port disconnects the compression chamber and the back pressure chamber, while the second back pressure port connects the compression chamber and the back pressure chamber. Since both the first and second back pressure ports are connected to the compression chamber, the pressure at the first back pressure port is lower than the pressure at the second back pressure port, and the second load is lower than the first load. Therefore, the first valve controls the first back pressure port to be closed, while the second back pressure port is open. Refrigerant is delivered to the back pressure chamber through the second back pressure port with higher pressure. This allows for greater back pressure to be provided to the stationary plate with the help of the back pressure plate, further adjusting the axial clearance between the moving plate and the stationary plate, and improving the compressor's operating efficiency and sealing performance.

[0013] In addition, the vortex component in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0014] Optionally, in some technical solutions of this utility model, a bypass cavity is provided between the back pressure plate and the stationary plate; a first through hole is provided on the stationary plate, the first through hole is connected to the bypass cavity and to one end of the first valve, for driving the first valve to move between the first position and the second position.

[0015] In this technical solution, a bypass cavity is provided between the back pressure plate and the stationary plate, and a first through hole is provided on the stationary plate. The first through hole is connected to the bypass cavity and to one end of the first valve, so that the refrigerant in the bypass cavity can come into contact with the first valve after flowing. The first through hole is used to drive the first valve to move between a first position and a second position. When the compressor is working at a first load, the refrigerant drives the first valve to the first position, realizing the opening of the first back pressure hole and the closing of the second back pressure hole. The refrigerant is delivered to the back pressure cavity through the first back pressure hole with a smaller pressure, which relatively reduces the internal pressure of the back pressure cavity. By reducing the axial force of the back pressure plate on the stationary plate, the axial force between the moving plate and the stationary plate is reduced, and the wear between the moving plate and the stationary plate is reduced.

[0016] When the compressor is operating at the second load, the refrigerant drives the first valve to the second position. At this time, the first back pressure port disconnects the compression chamber and the back pressure chamber, and the second back pressure port connects the compression chamber and the back pressure chamber. The refrigerant is delivered into the back pressure chamber through the second back pressure port with greater pressure, so that the back pressure plate provides greater back pressure to the stationary plate, further adjusting the axial clearance between the moving plate and the stationary plate, and improving the operating efficiency and sealing of the compressor.

[0017] Optionally, in some technical solutions of this utility model, the stationary plate is provided with a mounting hole, the first valve is disposed in the mounting hole, and the first through hole is connected to the first end of the mounting hole.

[0018] In this technical solution, a mounting hole is provided on the stationary plate, and a first valve is disposed within the mounting hole. A first through hole communicates with the first end of the mounting hole. By providing a mounting hole on the stationary plate, the fixing structure of the first valve can be simplified, reducing costs. Simultaneously, by connecting the first through hole to the first end of the mounting hole, the pipeline structure can be simplified, assembly difficulty reduced, and production efficiency improved.

[0019] Optionally, in some technical solutions of this utility model, the vortex assembly further includes an elastic element, which is connected to the first valve and located at the end of the first valve away from the first through hole; wherein, when the first valve is in the first position relative to the stationary disc, the elastic element is in a compressed state.

[0020] In this technical solution, the scroll assembly also includes an elastic element connected to the first valve and located at the end of the first valve furthest from the first through-hole. When the compressor operates at the first load, the bypass chamber is connected to the compression chamber but not to the low-pressure side of the compressor, causing an increase in the refrigerant pressure within the bypass chamber. Since the refrigerant in the bypass chamber can flow out through the first through-hole and drive the first valve, when the pressure in the bypass chamber exceeds the elastic force of the elastic element, the elastic element is compressed and deformed. That is, when the first valve is in the first position relative to the stationary plate, the elastic element is in a compressed state. When the compressor operates at the second load, the bypass chamber is simultaneously connected to both the compression chamber and the low-pressure region. The high-pressure refrigerant in the low-pressure region neutralizes the high-pressure refrigerant in the bypass chamber, thereby reducing the pressure within the bypass chamber. Because the bypass chamber is connected to the first through-hole, the refrigerant pressure at the first through-hole decreases. When the refrigerant pressure at the first through-hole is less than the elastic force of the elastic element, the elastic element releases its elastic potential energy. During the extension process, the compressed elastic element drives the first valve to move, thereby controlling the working position of the first valve.

[0021] By incorporating an elastic element, the first valve can be driven by the elastic force of the element, which further simplifies the control structure and reduces installation difficulty.

[0022] Optionally, in some technical solutions of this utility model, the mounting hole passes through the stationary disc, and the vortex assembly further includes a first sealing component and a second sealing component. The first sealing component is inserted into the first end of the mounting hole, and the second sealing component is inserted into the second end of the mounting hole. The end of the elastic element away from the first valve is connected to the second sealing component.

[0023] In this technical solution, the mounting hole penetrates the stationary disc, accommodating the first valve and reducing its installation difficulty, while also minimizing the space occupied by the first valve within the scroll assembly. The scroll assembly also includes a first sealing component and a second sealing component. The first sealing component is inserted at the first end of the mounting hole, and the second sealing component is inserted at the second end. The end of the elastic element furthest from the first valve is connected to the second sealing component. By using the first and second sealing components, the two ends of the first valve can be limited, and one end of the elastic element can be fixed, improving its stability.

[0024] The end of the elastic element furthest from the first valve is connected to the second sealing component, which can reduce the risk of the elastic element falling off and misaligning, and achieve stable driving of the first valve by the elastic element.

[0025] Furthermore, by providing detachable first and second sealing components, the disassembly efficiency of the first valve can be improved, facilitating the replacement and maintenance of the first valve, and making it easier to maintain and service the compressor.

[0026] In some technical solutions of this utility model, optionally, the inner wall of the first sealing component or the mounting hole is provided with a first sealing groove, the inner wall of the second sealing component or the mounting hole is provided with a second sealing groove, and the vortex assembly further includes a first sealing ring and a second sealing ring. The first sealing ring is disposed in the first sealing groove and is used to seal the gap between the first sealing component and the inner wall of the mounting hole. The second sealing ring is disposed in the second sealing groove and is used to seal the gap between the second sealing component and the inner wall of the mounting hole.

[0027] In this technical solution, the inner wall of the first sealing component or mounting hole is provided with a first sealing groove, and the inner wall of the second sealing component or mounting hole is provided with a second sealing groove. The vortex assembly also includes a first sealing ring and a second sealing ring. The sealing effect of the vortex assembly can be improved through the cooperation of the sealing groove and the sealing ring. Specifically, the first sealing ring is disposed in the first sealing groove to seal the gap between the first sealing component and the inner wall of the mounting hole, and the second sealing ring is disposed in the second sealing groove to seal the gap between the second sealing component and the inner wall of the mounting hole, thus preventing the gap from affecting the air pressure inside the vortex assembly and ensuring that the first valve can slide stably.

[0028] In some technical solutions of this utility model, optionally, the first sealing component includes a sealing part and a limiting part. The sealing part is inserted into the first end of the mounting hole, and the limiting part is connected to the end of the sealing part near the first valve. The limiting part includes a connecting hole and a driving hole. The driving hole is arranged along the axial direction of the first valve, and the opening of the driving hole faces the first valve. The connecting hole is arranged along the radial direction of the first valve and communicates with both the driving hole and the first through hole. When the first valve is in the second position relative to the stationary plate, the first valve abuts against the limiting part and covers the opening of the driving hole.

[0029] In this technical solution, the first sealing component includes a sealing part and a limiting part. The sealing part is inserted into the first end of the mounting hole, which can improve the airtightness of the mounting hole and support the first valve. The limiting part is connected to the end of the sealing part near the first valve, and the limiting part can limit the first valve. The limiting part includes a connecting hole and a driving hole. The driving hole is arranged along the axial direction of the first valve, and the opening of the driving hole faces the first valve. The connecting hole is arranged along the radial direction of the first valve and communicates with both the driving hole and the first through hole. When the first valve is in the second position relative to the stationary plate, the first valve abuts against the limiting part and covers the opening of the driving hole, which can limit the first valve. When the compressor is operating under high load, that is, when the compressor is operating under the first load, the refrigerant flowing out of the first through hole can flow into the connecting hole, and then drive the first valve through the opening of the driving hole, thereby adjusting the position of the first valve and adjusting the axial force between the moving plate and the stationary plate, ensuring the sealing performance and operating efficiency of the compressor.

[0030] Optionally, in some technical solutions of this utility model, when the compressor is operating under a first load, the bypass chamber is connected to the compression chamber and disconnected from the low-pressure side of the compressor. The refrigerant in the bypass chamber can enter the mounting hole and overcome the elastic force of the elastic element to drive the first valve to move to the first position. When the compressor is operating under a second load, the bypass chamber is connected to the compression chamber and connected to the low-pressure side of the compressor. The elastic force of the elastic element can overcome the pressure on the low-pressure side of the compressor to drive the first valve to move to the second position.

[0031] In this technical solution, when the compressor operates at the first load, the bypass chamber is connected to the compression chamber but disconnected from the low-pressure side of the compressor. High-pressure refrigerant in the compression chamber enters the bypass chamber, and simultaneously, refrigerant in the bypass chamber can enter the mounting hole. Under the action of the high-pressure refrigerant, the elastic force of the elastic element can be overcome, driving the first valve to move to the first position. Since the first load is greater than the second load, when the compressor operates at the second load, the bypass chamber is connected to the compression chamber and the low-pressure side of the compressor. The bypass chamber is simultaneously connected to both the low-pressure side and the compression chamber. The low-pressure side can neutralize the refrigerant pressure, thereby reducing the refrigerant pressure in the bypass chamber. The elastic force of the elastic element can overcome the pressure on the low-pressure side of the compressor, driving the first valve to move to the second position. This simplifies the control structure and reduces installation difficulty while controlling the position of the first valve.

[0032] In some technical solutions of this utility model, optionally, the first valve is provided with a first connecting groove and a second connecting groove; when the first valve is in the first position, the first back pressure hole is connected to the back pressure cavity through the first connecting groove, and the second connecting groove is offset from the second back pressure hole; when the first valve is in the second position, the first connecting groove is offset from the first back pressure hole, and the second back pressure hole is connected to the back pressure cavity through the second connecting groove.

[0033] In this technical solution, the first valve is provided with a first connecting groove and a second connecting groove, which can realize the connection between the back pressure chamber and the first back pressure hole or the second back pressure hole under different loads. The first connecting groove and the second connecting groove, which can be arranged circumferentially, facilitate the sliding of the first valve and improve the flow guiding efficiency.

[0034] When the first valve is in the first position, the first back pressure hole is connected to the back pressure chamber through the first connecting groove, and the second connecting groove is offset from the second back pressure hole. Refrigerant is delivered to the back pressure chamber through the first back pressure hole with lower pressure, thereby relatively reducing the internal pressure of the back pressure chamber, thereby reducing the axial force of the back pressure plate on the stationary plate, reducing the axial force between the moving plate and the stationary plate, reducing the wear between the moving plate and the stationary plate, extending the service life of the compressor, and improving safety.

[0035] When the first valve is in the second position, the first connecting groove is offset from the first back pressure hole, and the second back pressure hole is connected to the back pressure chamber through the second connecting groove. The first valve controls the first back pressure hole to be in the closed state, while the second back pressure hole is in the open state. Refrigerant is delivered into the back pressure chamber through the second back pressure hole with greater pressure. The back pressure plate can provide greater back pressure to the stationary plate, further adjusting the axial clearance between the moving plate and the stationary plate, thereby improving the compressor's operating efficiency and sealing performance.

[0036] In some technical solutions of this utility model, optionally, the first connecting groove is arranged around the first valve; the second connecting groove is arranged around the first valve.

[0037] In this technical solution, the first connecting groove is arranged circumferentially along the first valve; the second connecting groove is also arranged circumferentially along the first valve. The circumferential arrangement of the first and second connecting grooves facilitates the sliding of the first valve and improves flow guiding efficiency. The circumferential arrangement also reduces the difficulty of slotting the first and second connecting grooves, thus lowering production costs.

[0038] Optionally, in some technical solutions of this utility model, the first valve is provided with a plurality of third sealing grooves, which are arranged on both sides of the first connecting groove, and the vortex assembly also includes a plurality of third sealing rings, which are respectively arranged in the plurality of third sealing grooves; the first valve is provided with a plurality of fourth sealing grooves, which are arranged on both sides of the second connecting groove, and the vortex assembly also includes a plurality of fourth sealing rings, which are respectively arranged in the plurality of fourth sealing grooves.

[0039] In this technical solution, since the first valve is mounted on the stationary disc and can slide relative to it, the sealing performance of the first valve during sliding can be further improved by providing multiple third sealing grooves on the first valve and arranging them on both sides of the first connecting groove. The vortex assembly also includes multiple third sealing rings, which are respectively arranged within the multiple third sealing grooves. The first valve is provided with multiple fourth sealing grooves, which are arranged on both sides of the second connecting groove. The vortex assembly also includes multiple fourth sealing rings, which are respectively arranged within the multiple fourth sealing grooves, further improving the sealing performance of the first valve.

[0040] Multiple third sealing grooves are arranged on both sides of the first connecting groove, and multiple fourth sealing grooves are arranged on both sides of the second connecting groove. This can improve the airtightness of the first or second connecting groove when it is connected, thereby improving the adjustment of the air pressure in the back pressure chamber and improving the stability of the vortex assembly.

[0041] In some technical solutions of this utility model, optionally, the end of the first through hole that communicates with the mounting hole is the first end of the first through hole; the first end of the first through hole is located between the first sealing ring and one of the plurality of third sealing rings that is close to the first sealing component.

[0042] In this technical solution, the end of the first through hole that connects to the mounting hole is the first end of the first through hole. The first end of the first through hole is located between the first sealing ring and one of the third sealing rings that is closer to the first sealing component. The refrigerant transmission path of the first through hole can be sealed by the third sealing ring and the first sealing ring, thereby improving the airtightness inside the compressor. At the same time, by setting the first end of the first through hole between the first sealing ring and one of the third sealing rings that is closer to the first sealing component, the refrigerant flowing out of the first through hole can accumulate on the side of the first valve that is closer to the first sealing component, thereby facilitating the refrigerant flowing out of the first through hole to drive the first valve and achieve stable control of the position of the first valve.

[0043] In some technical solutions of this utility model, optionally, the first load is a full load and the second load is a partial load.

[0044] In this technical solution, the first load is full load, and the second load is partial load. Therefore, when the compressor operates at the first load (full load), the first back pressure port is open (controlled by the first valve), while the second back pressure port is closed. Refrigerant is supplied to the back pressure chamber through the lower-pressure first back pressure port, thus relatively reducing the internal pressure of the back pressure chamber. This reduces the axial force of the back pressure plate on the stationary plate, thereby reducing the axial force between the moving and stationary plates, decreasing wear, extending the compressor's service life, and improving safety. When the compressor operates at the second load (partial load), the first back pressure port is closed (controlled by the first valve), while the second back pressure port is open. Refrigerant is supplied to the back pressure chamber through the higher-pressure second back pressure port. This allows the back pressure plate to provide greater back pressure to the stationary plate, further adjusting the axial clearance between the moving and stationary plates, improving the compressor's operating efficiency and sealing performance.

[0045] Specifically, the first load can also be a non-full load greater than the second load.

[0046] In some technical solutions of this utility model, optionally, the first back pressure hole is closer to the inner profile line of the first vortex blade relative to the inner and outer profile lines of the stationary disk; the second back pressure hole is closer to the outer profile line of the first vortex blade relative to the inner and outer profile lines of the first vortex blade.

[0047] In this technical solution, the first back pressure orifice is closer to the inner profile of the first scroll blade relative to both the inner and outer profiles of the stationary disk; the second back pressure orifice is closer to the outer profile of the first scroll blade relative to both the inner and outer profiles of the first scroll blade. Therefore, when the compressor compresses the refrigerant, the refrigerant in the compression chamber first passes through the first back pressure orifice, resulting in a lower degree of compression at the first back pressure orifice than at the second back pressure orifice, and consequently, a lower pressure at the first back pressure orifice than at the second back pressure orifice. Thus, by controlling the opening and closing of the first and second back pressure orifices through the first valve, the pressure within the back pressure chamber can be adjusted, thereby regulating the axial force between the moving and stationary disks and ensuring the compressor's sealing performance and operating efficiency.

[0048] The second aspect of this utility model provides a compressor, including a scroll assembly as described in any of the above technical solutions.

[0049] The compressor provided in this application includes a scroll assembly as described in any of the above-described technical solutions. Therefore, this compressor possesses all the beneficial effects of the scroll assembly as described in any of the above-described technical solutions.

[0050] 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 the above technical solutions.

[0051] This application provides a refrigeration device, including a scroll assembly as described in any of the above-described technical solutions or a compressor as described in the above-described technical solutions. Therefore, this refrigeration device possesses all the beneficial effects of the scroll assembly as described in any of the above-described technical solutions or the compressor as described in the above-described technical solutions.

[0052] 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

[0053] 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:

[0054] Figure 1 This is one of the structural schematic diagrams of a vortex assembly according to an embodiment of the present invention;

[0055] Figure 2 This is one of the structural schematic diagrams of a first valve according to an embodiment of the present invention;

[0056] Figure 3 This is a schematic diagram of the structure of a compressor according to an embodiment of the present invention;

[0057] Figure 4 This is a second schematic diagram of the structure of the first valve according to an embodiment of the present invention;

[0058] Figure 5 This is one of the structural schematic diagrams of a second sealing component according to an embodiment of the present invention;

[0059] Figure 6 This is a second schematic diagram of the structure of the second sealing component according to an embodiment of the present invention;

[0060] Figure 7 This is one of the structural schematic diagrams of a first sealing component according to an embodiment of the present invention;

[0061] Figure 8 This is a second schematic diagram of the structure of the first sealing component according to an embodiment of the present invention;

[0062] Figure 9 This is a second schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0063] Figure 10 This is the third schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0064] Figure 11This is a fourth schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0065] Figure 12 This is the fifth schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0066] Figure 13 This is a sixth schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0067] Figure 14 This is the seventh schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention;

[0068] Figure 15 This is the eighth schematic diagram of the structure of a vortex assembly according to an embodiment of the present invention.

[0069] in, Figures 1 to 15 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0070] 100 Scroll assembly, 110 Moving disc, 120 Stationary disc, 122 Compression chamber, 124 First back pressure hole, 126 Second back pressure hole, 128 First through hole, 130 First valve, 132 Mounting hole, 134 First connecting groove, 136 Second connecting groove, 140 Back pressure plate, 142 Bypass chamber, 150 Float assembly, 152 Back pressure chamber, 160 Elastic element, 162 First sealing component, 164 Second sealing component, 166 Sealing part, 167 Limiting part, 168 Connecting hole, 169 Drive hole, 170 First sealing groove, 172 First sealing ring, 174 Second sealing groove, 176 Second sealing ring, 180 Third sealing groove, 182 Third sealing ring, 184 Fourth sealing groove, 186 Fourth sealing ring, 190 First disc body, 192 First scroll blade, 194 Inner profile line, 196 Outer profile line, 200 Compressor. Detailed Implementation

[0071] 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.

[0072] 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.

[0073] The following reference Figures 1 to 15 This invention describes a scroll assembly, a compressor, and a refrigeration device according to some embodiments of the present invention.

[0074] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the embodiment of this utility model, a scroll assembly 100 is provided. The scroll assembly 100 is used in the compressor 200. The scroll assembly 100 includes a moving plate 110, a stationary plate 120, a back pressure plate 140, a float assembly 150, and a first valve 130. The stationary plate 120 meshes with the moving plate 110, and a compression chamber 122 is provided between the stationary plate 120 and the moving plate 110. The stationary plate 120 is provided with a first back pressure hole 124 and a second back pressure hole 126, both of which are connected to the compression chamber 122. The pressure at the first back pressure hole 124 is less than the pressure at the second back pressure hole 126. The back pressure plate 140 is located on the side of the stationary plate 120 away from the moving plate 110. The float assembly 150 is located on the side of the back pressure plate 140 away from the stationary plate 120. The compressor 200 has a back pressure chamber 152, and a first back pressure port 124 and a second back pressure port 126 are both connected to the back pressure chamber 152. A first valve 130 is disposed on a stationary plate 120 and can slide relative to the stationary plate 120 to control the opening and closing of the first back pressure port 124 and the second back pressure port 126. When the compressor 200 operates with a first load, the first valve 130 is in a first position relative to the stationary plate 120, the first back pressure port 124 connects the compression chamber 122 and the back pressure chamber 152, and the second back pressure port 126 disconnects the compression chamber 122 and the back pressure chamber 152. When the compressor 200 operates with a second load, the first valve 130 is in a second position relative to the stationary plate 120, the first back pressure port 124 disconnects the compression chamber 122 and the back pressure chamber 152, and the second back pressure port 126 connects the compression chamber 122 and the back pressure chamber 152. The second load is less than the first load.

[0075] This application provides a scroll assembly 100 for use in a compressor 200. The scroll assembly 100 includes a moving disc 110, a stationary disc 120, a back pressure plate 140, a float assembly 150, and a first valve 130. The stationary disc 120 meshes with the moving disc 110, and a compression chamber 122 is provided between the stationary disc 120 and the moving disc 110. The relative movement between the moving disc 110 and the stationary disc 120 changes the volume of the compression chamber 122. As the moving disc 110 revolves, the refrigerant in the compression chamber 122 can be compressed.

[0076] The stationary plate 120 is provided with a first back pressure hole 124 and a second back pressure hole 126. Both the first back pressure hole 124 and the second back pressure hole 126 are connected to the compression chamber 122. The pressure at the first back pressure hole 124 is less than the pressure at the second back pressure hole 126. The back pressure plate 140 is located on the side of the stationary plate 120 away from the moving plate 110. The float plate assembly 150 is located on the side of the back pressure plate 140 away from the stationary plate 120. There is a back pressure chamber 152 between the float plate assembly 150 and the back pressure plate 140. Both the first back pressure hole 124 and the second back pressure hole 126 are connected to the back pressure chamber 152. By controlling the opening and closing of the first back pressure hole 124 and the second back pressure hole 126 respectively, the pressure in the back pressure chamber 152 can be adjusted, thereby adjusting the axial force between the moving plate 110 and the stationary plate 120, ensuring the sealing performance and operating efficiency of the compressor 200.

[0077] The first valve 130 is disposed on the stationary plate 120 and can slide relative to the stationary plate 120 to control the opening and closing of the first back pressure port 124 and the second back pressure port 126. By setting the first valve 130, the stability of the switching between the first back pressure port 124 and the second back pressure port 126 within the compressor 200 can be improved, thereby enhancing the operating performance of the compressor 200. By using a single first valve 130 to control the opening and closing of the first back pressure port 124 and the second back pressure port 126, the number of control valves can be reduced, simplifying the internal structure of the scroll assembly 100 and lowering production costs. Furthermore, since the first valve 130 can control the opening and closing of the first back pressure port 124 and the second back pressure port 126 by sliding relative to the stationary plate 120, the internal piping structure of the scroll assembly 100 can also be simplified, improving the operational stability of the scroll assembly 100. When the compressor 200 is working, depending on different load conditions, the first back pressure port 124 can be opened and the second back pressure port 126 can be closed simultaneously by the first valve 130, or the first back pressure port 124 can be closed and the second back pressure port 126 can be opened simultaneously, thereby avoiding the first back pressure port 124 and the second back pressure port 126 from opening at the same time and improving the working performance of the compressor 200.

[0078] When the compressor 200 is operating at a first load, the first valve 130 is in a first position relative to the stationary plate 120, the first back pressure hole 124 connects the compression chamber 122 and the back pressure chamber 152, and the second back pressure hole 126 disconnects the compression chamber 122 and the back pressure chamber 152. Since both the first back pressure port 124 and the second back pressure port 126 are connected to the compression chamber 122, the pressure at the first back pressure port 124 is less than the pressure at the second back pressure port 126, and the second load is less than the first load. Therefore, the first back pressure port 124 is controlled to be in a conducting state by the first valve 130, while the second back pressure port 126 is in a closed state. Refrigerant is delivered to the back pressure chamber 152 through the first back pressure port 124 with lower pressure, thereby relatively reducing the internal pressure of the back pressure chamber 152. This reduces the axial force of the back pressure plate 140 on the stationary plate 120, thereby reducing the axial force between the moving plate 110 and the stationary plate 120, reducing the wear between the moving plate 110 and the stationary plate 120, extending the service life of the compressor 200, and improving safety.

[0079] When the compressor 200 operates under the second load, the first valve 130 is in the second position relative to the stationary plate 120. The first back pressure port 124 disconnects the compression chamber 122 and the back pressure chamber 152, while the second back pressure port 126 connects the compression chamber 122 and the back pressure chamber 152. Since both the first back pressure port 124 and the second back pressure port 126 are connected to the compression chamber 122, the pressure at the first back pressure port 124 is less than the pressure at the second back pressure port 126, and the second load is less than the first load. Therefore, the first valve 130 controls the first back pressure port 124 to be in the closed state, while the second back pressure port 126 is in the open state. Refrigerant is delivered to the back pressure chamber 152 through the second back pressure port 126 with a larger pressure. The back pressure plate 140 can provide greater back pressure to the stationary plate 120, further adjusting the axial clearance between the moving plate 110 and the stationary plate 120, thereby improving the operating efficiency and sealing performance of the compressor 200.

[0080] Specifically, the vortex assembly 100 as defined in this application can be a symmetrical profile design.

[0081] Specifically, when the second back pressure port 126 is closed, the compression chamber 122 and the back pressure chamber 152 are connected through the first back pressure port 124, and the compressor 200 operates at full load. The pressure value at the first back pressure port 124 is detected as the first pressure value. When the first back pressure port 124 is closed, the compression chamber 122 and the back pressure chamber 152 are connected through the second back pressure port 126, and the compressor 200 operates at full load. The pressure value at the second back pressure port 126 is detected as the second pressure value. The second pressure value is greater than the first pressure value, that is, the pressure at the first back pressure port 124 is less than the pressure at the second back pressure port 126.

[0082] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0083] A bypass cavity 142 is provided between the back pressure plate 140 and the stationary plate 120; a first through hole 128 is provided on the stationary plate 120, which is connected to the bypass cavity 142 and to one end of the first valve 130, for driving the first valve 130 to move between the first position and the second position.

[0084] In this embodiment, a bypass cavity 142 is provided between the back pressure plate 140 and the stationary plate 120, and a first through hole 128 is provided on the stationary plate 120. The first through hole 128 communicates with the bypass cavity 142 and with one end of the first valve 130, allowing the refrigerant in the bypass cavity 142 to come into contact with the first valve 130 after flowing. The first through hole 128 is used to drive the first valve 130 to move between a first position and a second position. When the compressor 200 is operating at a first load, the refrigerant drives the first valve 130 to the first position, thereby opening the first back pressure hole 124 and closing the second back pressure hole 126. Refrigerant is then delivered to the back pressure cavity 152 through the lower pressure first back pressure hole 124, relatively reducing the internal pressure of the back pressure cavity 152. By reducing the axial force of the back pressure plate 140 on the stationary plate 120, the axial force between the moving plate 110 and the stationary plate 120 is reduced, thus reducing the degree of wear between the moving plate 110 and the stationary plate 120.

[0085] When the compressor 200 is operating under the second load, the refrigerant drives the first valve 130 to the second position. At this time, the first back pressure port 124 disconnects the compression chamber 122 and the back pressure chamber 152, and the second back pressure port 126 connects the compression chamber 122 and the back pressure chamber 152. The refrigerant is delivered into the back pressure chamber 152 through the second back pressure port 126 with a larger pressure, so that the back pressure plate 140 provides a greater back pressure to the stationary plate 120, further adjusting the axial clearance between the moving plate 110 and the stationary plate 120, and improving the operating efficiency and sealing of the compressor 200.

[0086] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0087] The stationary plate 120 is provided with a mounting hole 132, the first valve 130 is disposed in the mounting hole 132, and the first through hole 128 is connected to the first end of the mounting hole 132.

[0088] In this embodiment, a mounting hole 132 is provided on the stationary plate 120, and a first valve 130 is disposed within the mounting hole 132. A first through hole 128 communicates with the first end of the mounting hole 132. By providing a mounting hole 132 on the stationary plate 120, the fixing structure of the first valve 130 can be simplified, reducing costs. At the same time, by communicating the first end of the mounting hole 132 with the first through hole 128, the pipeline structure can be simplified, assembly difficulty reduced, and production efficiency improved.

[0089] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0090] The vortex assembly 100 also includes an elastic element 160, which is connected to the first valve 130 and located at the end of the first valve 130 away from the first through hole 128; wherein, when the first valve 130 is in the first position relative to the stationary plate 120, the elastic element 160 is in a compressed state.

[0091] In this embodiment, the scroll assembly 100 further includes an elastic element 160, which is connected to the first valve 130 and located at the end of the first valve 130 away from the first through hole 128. When the compressor 200 is operating at the first load, the bypass cavity 142 is connected to the compression cavity 122 but not to the low-pressure side of the compressor 200, which increases the refrigerant pressure in the bypass cavity 142. Since the refrigerant in the bypass cavity 142 can flow out through the first through hole 128 and drive the first valve 130, when the pressure in the bypass cavity 142 is greater than the elastic force of the elastic element 160, the elastic element 160 is compressed and deformed under force. That is, when the first valve 130 is in the first position relative to the stationary plate 120, the elastic element 160 is in a compressed state. When the compressor 200 operates under the second load, the bypass chamber 142 is simultaneously connected to the compression chamber 122 and the low-pressure region. The high-pressure refrigerant in the low-pressure region is neutralized in the bypass chamber 142, thereby reducing the pressure in the bypass chamber 142. Since the bypass chamber 142 is connected to the first through hole 128, the refrigerant pressure at the first through hole 128 is reduced. When the refrigerant pressure at the first through hole 128 is less than the elastic force of the elastic element 160, the elastic element 160 releases its own elastic potential energy. During the extension process, the compressed elastic element 160 drives the first valve 130 to move, thereby controlling the working position of the first valve 130.

[0092] By setting up the elastic element 160, the first valve 130 can be driven by the elastic force of the elastic element 160, which can further simplify the control structure and reduce the installation difficulty.

[0093] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0094] The mounting hole 132 passes through the stationary disc 120. The vortex assembly 100 also includes a first sealing component 162 and a second sealing component 164. The first sealing component 162 is inserted into the first end of the mounting hole 132, and the second sealing component 164 is inserted into the second end of the mounting hole 132. The end of the elastic element 160 away from the first valve 130 is connected to the second sealing component 164.

[0095] In this embodiment, the mounting hole 132 penetrates the stationary disc 120, accommodating the first valve 130, reducing the installation difficulty of the first valve 130, and also reducing the space occupied by the first valve 130 within the vortex assembly 100. The vortex assembly 100 also includes a first sealing component 162 and a second sealing component 164. The first sealing component 162 is inserted into the first end of the mounting hole 132, and the second sealing component 164 is inserted into the second end of the mounting hole 132. The end of the elastic member 160 away from the first valve 130 is connected to the second sealing component 164. By setting the first sealing component 162 and the second sealing component 164, the two ends of the first valve 130 can be limited, and one end of the elastic member 160 can also be fixed, improving the stability of the elastic member 160.

[0096] The end of the elastic element 160 away from the first valve 130 is connected to the second sealing component 164, which can reduce the risk of the elastic element 160 falling off and misaligning, and realize the stable driving of the elastic element 160 on the first valve 130.

[0097] Furthermore, by providing a detachable first sealing component 162 and a second sealing component 164, the disassembly efficiency of the first valve 130 can be improved, making it easier to replace and maintain the first valve 130, and making it easier to maintain and service the compressor 200.

[0098] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0099] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the inner wall of the first sealing component 162 or the mounting hole 132 is provided with a first sealing groove 170, and the inner wall of the second sealing component 164 or the mounting hole 132 is provided with a second sealing groove 174. The vortex assembly 100 also includes a first sealing ring 172 and a second sealing ring 176. The first sealing ring 172 is disposed in the first sealing groove 170 and is used to seal the gap between the first sealing component 162 and the inner wall of the mounting hole 132. The second sealing ring 176 is disposed in the second sealing groove 174 and is used to seal the gap between the second sealing component 164 and the inner wall of the mounting hole 132.

[0100] In this embodiment, the inner wall of the first sealing component 162 or the mounting hole 132 is provided with a first sealing groove 170, and the inner wall of the second sealing component 164 or the mounting hole 132 is provided with a second sealing groove 174. The vortex assembly 100 also includes a first sealing ring 172 and a second sealing ring 176. The sealing effect of the vortex assembly 100 can be improved by the cooperation of the sealing groove and the sealing ring. The first sealing ring 172 is disposed in the first sealing groove 170 to seal the gap between the first sealing component 162 and the inner wall of the mounting hole 132. The second sealing ring 176 is disposed in the second sealing groove 174 to seal the gap between the second sealing component 164 and the inner wall of the mounting hole 132, so as to avoid the gap from affecting the air pressure inside the vortex assembly 100 and ensure that the first valve 130 can slide stably.

[0101] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0102] The first sealing component 162 includes a sealing part 166 and a limiting part 167. The sealing part 166 is inserted into the first end of the mounting hole, and the limiting part 167 is connected to the end of the sealing part 166 near the first valve 130. The limiting part 167 includes a connecting hole 168 and a driving hole 169. The driving hole 169 is arranged along the axial direction of the first valve 130, and the opening of the driving hole 169 faces the first valve 130. The connecting hole 168 is arranged along the radial direction of the first valve 130 and communicates with the driving hole 169 and the first through hole. When the first valve 130 is in the second position relative to the stationary plate 120, the first valve 130 abuts against the limiting part 167 and covers the opening of the driving hole 169.

[0103] In this technical solution, the first sealing component 162 includes a sealing part 166 and a limiting part 167. The sealing part 166 is inserted into the first end of the mounting hole, which can improve the airtightness of the mounting hole and support the first valve 130. The limiting part 167 is connected to the end of the sealing part 166 near the first valve 130, and the limiting part 167 can limit the first valve 130. The limiting part 167 includes a connecting hole 168 and a driving hole 169. The driving hole 169 is arranged axially along the first valve 130, and the opening of the driving hole 169 faces the first valve 130. The connecting hole 168 is arranged radially along the first valve 130 and communicates with both the driving hole 169 and the first through hole. When the first valve 130 is in the second position relative to the stationary plate 120, the first valve 130 abuts against the limiting part 167 and covers the opening of the driving hole 169, thereby limiting the first valve 130. When the compressor 200 is operating under high load, i.e., when the compressor 200 is operating under the first load, the refrigerant flowing out of the first through hole can flow into the connecting hole 168, and then drive the first valve 130 through the opening of the driving hole 169, thereby adjusting the position of the first valve 130 and adjusting the axial force between the moving plate 110 and the stationary plate 120, ensuring the sealing performance and operating efficiency of the compressor 200.

[0104] Specifically, such as Figure 4 and Figure 7 As shown, the radial direction of the first valve 130 is as indicated by arrow F1.

[0105] like Figure 4 and Figure 8 As shown, the axial direction of the first valve 130 is in the direction indicated by arrow F2.

[0106] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0107] When the compressor 200 operates under the first load, the bypass chamber 142 is connected to the compression chamber 122 and disconnected from the low-pressure side of the compressor 200. The refrigerant in the bypass chamber 142 can enter the mounting hole 132 and overcome the elastic force of the elastic element 160 to drive the first valve 130 to move to the first position. When the compressor 200 operates under the second load, the bypass chamber 142 is connected to the compression chamber 122 and connected to the low-pressure side of the compressor 200. The elastic force of the elastic element 160 can overcome the pressure on the low-pressure side of the compressor 200 to drive the first valve 130 to move to the second position.

[0108] In this embodiment, when the compressor 200 is operating at the first load, the bypass chamber 142 is connected to the compression chamber 122 and disconnected from the low-pressure side of the compressor 200. The high-pressure refrigerant in the compression chamber 122 enters the bypass chamber 142, and at the same time, the refrigerant in the bypass chamber 142 can enter the mounting hole 132. Under the action of the high-pressure refrigerant, the elastic force of the elastic element 160 can be overcome, thereby driving the first valve 130 to move to the first position. Since the first load is greater than the second load, when the compressor 200 is operating at the second load, the bypass chamber 142 is connected to the compression chamber 122 and the low-pressure side of the compressor 200. The bypass chamber 142 is connected to both the low-pressure side and the compression chamber 122. The low-pressure side can neutralize the refrigerant pressure, thereby reducing the refrigerant pressure in the bypass chamber 142. The elastic force of the elastic element 160 can overcome the pressure on the low-pressure side of the compressor 200 and drive the first valve 130 to move to the second position. While controlling the position of the first valve 130, the control structure is simplified and the installation difficulty is reduced.

[0109] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0110] The first valve 130 is provided with a first connecting groove 134 and a second connecting groove 136. When the first valve 130 is in the first position, the first back pressure hole 124 is connected to the back pressure chamber 152 through the first connecting groove 134, and the second connecting groove 136 is offset from the second back pressure hole 126. When the first valve 130 is in the second position, the first connecting groove 134 is offset from the first back pressure hole 124, and the second back pressure hole 126 is connected to the back pressure chamber 152 through the second connecting groove 136.

[0111] In this embodiment, the first valve 130 is provided with a first connecting groove 134 and a second connecting groove 136, which can realize the connection between the back pressure chamber 152 and the first back pressure hole 124 or the second back pressure hole 126 under different loads. The first connecting groove 134 and the second connecting groove 136, which can be arranged circumferentially, facilitate the sliding of the first valve 130 and improve the flow guiding efficiency.

[0112] When the first valve 130 is in the first position, the first back pressure hole 124 is connected to the back pressure chamber 152 through the first connecting groove 134, and the second connecting groove 136 is offset from the second back pressure hole 126. Refrigerant is delivered into the back pressure chamber 152 through the first back pressure hole 124 with lower pressure, thereby relatively reducing the internal pressure of the back pressure chamber 152, thereby reducing the axial force of the back pressure plate 140 on the stationary plate 120, thereby reducing the axial force between the moving plate 110 and the stationary plate 120, reducing the wear between the moving plate 110 and the stationary plate 120, extending the service life of the compressor 200, and improving safety.

[0113] When the first valve 130 is in the second position, the first connecting groove 134 is offset from the first back pressure hole 124, and the second back pressure hole 126 is connected to the back pressure chamber 152 through the second connecting groove 136. The first valve 130 controls the first back pressure hole 124 to be in the closed state, while the second back pressure hole 126 is in the open state. Refrigerant is delivered into the back pressure chamber 152 through the second back pressure hole 126 with greater pressure. The back pressure plate 140 can provide greater back pressure to the stationary plate 120, further adjusting the axial clearance between the moving plate 110 and the stationary plate 120, thereby improving the operating efficiency and sealing of the compressor 200.

[0114] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0115] The first connecting groove 134 is arranged circumferentially along the first valve 130; the second connecting groove 136 is arranged circumferentially along the first valve 130.

[0116] In this embodiment, the first connecting groove 134 is arranged circumferentially along the first valve 130; the second connecting groove 136 is also arranged circumferentially along the first valve 130. The circumferential arrangement of the first connecting groove 134 and the second connecting groove 136 facilitates the sliding of the first valve 130 and improves flow guiding efficiency. The circumferential arrangement also reduces the difficulty of slotting the first connecting groove 134 and the second connecting groove 136, thus lowering production costs.

[0117] Specifically, the circumferential direction of the first valve 130 is direction F3.

[0118] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0119] The first valve 130 is provided with a plurality of third sealing grooves 180, which are arranged on both sides of the first connecting groove 134. The vortex assembly 100 also includes a plurality of third sealing rings 182, which are respectively arranged in the plurality of third sealing grooves 180. The first valve 130 is provided with a plurality of fourth sealing grooves 184, which are arranged on both sides of the second connecting groove 136. The vortex assembly 100 also includes a plurality of fourth sealing rings 186, which are respectively arranged in the plurality of fourth sealing grooves 184.

[0120] In this embodiment, since the first valve 130 is disposed on the stationary plate 120 and can slide relative to the stationary plate 120, the sealing performance of the first valve 130 can be further improved by providing a plurality of third sealing grooves 180 on the first valve 130 and arranging the plurality of third sealing grooves 180 on both sides of the first connecting groove 134. The vortex assembly 100 also includes a plurality of third sealing rings 182, which are respectively arranged in the plurality of third sealing grooves 180; the first valve 130 is provided with a plurality of fourth sealing grooves 184, which are arranged on both sides of the second connecting groove 136; the vortex assembly 100 also includes a plurality of fourth sealing rings 186, which are respectively arranged in the plurality of fourth sealing grooves 184, which can further improve the sealing performance of the first valve 130.

[0121] Multiple third sealing grooves 180 are arranged on both sides of the first connecting groove 134, and multiple fourth sealing grooves 184 are arranged on both sides of the second connecting groove 136. This can improve the airtightness of the first connecting groove 134 or the second connecting groove 136 when they are connected, thereby improving the adjustment of the air pressure in the back pressure chamber 152 and improving the stability of the vortex assembly 100.

[0122] Specifically, such as Figure 3 , Figure 9 , Figure 13 and Figure 15 As shown, the high-pressure second back pressure port 126 is in a conductive state, and refrigerant is delivered into the back pressure chamber 152 through the second back pressure port 126 with greater pressure. It can provide greater back pressure to the stationary plate 120 with the help of the back pressure plate 140, further adjust the axial clearance between the moving plate 110 and the stationary plate 120, and improve the operating efficiency and sealing of the compressor 200.

[0123] Even when the compressor 200 operates at a relatively small second load, it can also be in a half-load state. The first valve 130 is in the second position relative to the stationary plate 120. The first back pressure port 124 disconnects the compression chamber 122 and the back pressure chamber 152, while the second back pressure port 126 connects the compression chamber 122 and the back pressure chamber 152. The pressure at the first back pressure port 124 is lower than the pressure at the second back pressure port 126. Therefore, the first valve 130 controls the first back pressure port 124 to be in the closed state, while the second back pressure port 126 is in the open state. Refrigerant can be delivered into the back pressure chamber 152 through the second back pressure port 126 with a larger pressure, increasing the pressure in the back pressure chamber 152. This, in turn, can provide greater back pressure to the stationary plate 120 with the help of the back pressure plate 140, further adjusting the axial clearance between the moving plate 110 and the stationary plate 120, thereby improving the operating efficiency and sealing performance of the compressor 200.

[0124] like Figure 3 , Figure 10 and Figure 11As shown, when the compressor 200 is operating at full load, the first valve 130 can be in the first position relative to the stationary plate 120. The first back pressure hole 124 connects the compression chamber 122 and the back pressure chamber 152. Since both the first back pressure hole 124 and the second back pressure hole 126 are connected to the compression chamber 122, the pressure at the first back pressure hole 124 is less than the pressure at the second back pressure hole 126. Therefore, by controlling the first back pressure hole 124 to be in the conducting state through the first valve 130, the internal pressure of the back pressure chamber 152 can be relatively reduced, thereby reducing the axial force of the back pressure plate 140 on the stationary plate 120. This reduces the axial force between the moving plate 110 and the stationary plate 120, reduces the wear between the moving plate 110 and the stationary plate 120, extends the service life of the compressor 200, and improves safety.

[0125] Refrigerant is supplied to the back pressure chamber 152 through the first back pressure hole 124 with lower pressure, thereby relatively reducing the internal pressure of the back pressure chamber 152. This reduces the axial force of the back pressure plate 140 on the stationary plate 120, thereby reducing the axial force between the moving plate 110 and the stationary plate 120, reducing the wear between the moving plate 110 and the stationary plate 120, extending the service life of the compressor 200, avoiding excessive axial pressure that could cause severe wear between the stationary plate 120 and the moving plate 110, and further improving the safety of the compressor.

[0126] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0127] The end of the first through hole 128 that communicates with the mounting hole 132 is the first end of the first through hole 128; the first end of the first through hole 128 is located between the first sealing ring 172 and one of the plurality of third sealing rings 182 that is close to the first sealing component 162.

[0128] In this embodiment, the end of the first through hole 128 that communicates with the mounting hole 132 is the first end of the first through hole 128. The first end of the first through hole 128 is located between the first sealing ring 172 and one of the third sealing rings 182 that is close to the first sealing component 162. The refrigerant transmission path of the first through hole 128 can be sealed by the third sealing ring 182 and the first sealing ring 172, thereby improving the airtightness inside the compressor 200. At the same time, by setting the first end of the first through hole 128 between the first sealing ring 172 and one of the third sealing rings 182 that is close to the first sealing component 162, the refrigerant flowing out of the first through hole 128 can accumulate on the side of the first valve 130 that is close to the first sealing component 162, thereby facilitating the refrigerant flowing out of the first through hole 128 to drive the first valve 130 and achieve stable control of the position of the first valve 130.

[0129] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0130] The first load is the full load, and the second load is the partial load.

[0131] In this embodiment, the first load is a full load, and the second load is a partial load. Therefore, when the compressor 200 operates at the first load, that is, when the compressor 200 is in a full load state, the first back pressure port 124 is controlled to be in a conducting state by the first valve 130, while the second back pressure port 126 is in a closed state. Refrigerant is delivered into the back pressure chamber 152 through the first back pressure port 124 with lower pressure, thereby relatively reducing the internal pressure of the back pressure chamber 152, and thus reducing the axial force of the back pressure plate 140 on the stationary plate 120. This reduces the axial force between the moving plate 110 and the stationary plate 120, reduces the wear between the moving plate 110 and the stationary plate 120, extends the service life of the compressor 200, and improves safety. Therefore, when the compressor 200 operates under the second load, i.e., under partial load, the first back pressure port 124 is controlled to be closed by the first valve 130, while the second back pressure port 126 is open. The refrigerant is delivered into the back pressure chamber 152 through the second back pressure port 126 with greater pressure. The back pressure plate 140 can provide greater back pressure to the stationary plate 120, further adjusting the axial clearance between the moving plate 110 and the stationary plate 120, thereby improving the operating efficiency and sealing of the compressor 200.

[0132] Specifically, the first load can also be a non-full load greater than the second load.

[0133] This embodiment provides a vortex assembly 100, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0134] like Figure 3 and Figure 12 As shown, the first back pressure hole 124 is closer to the inner profile 194 relative to the inner profile 194 and outer profile 196 of the first vortex blade 192 of the stationary disk 120; the second back pressure hole 126 is closer to the outer profile 196 relative to the inner profile 194 and outer profile 196 of the first vortex blade 192.

[0135] In this embodiment, the first back pressure hole 124 is closer to the inner profile 194 relative to the inner profile 194 and outer profile 196 of the first scroll blade 192 of the stationary disk 120; the second back pressure hole 126 is closer to the outer profile 196 relative to the inner profile 194 and outer profile 196 of the first scroll blade 192. Therefore, when the compressor 200 compresses the refrigerant, the refrigerant in the compression chamber 122 will first pass through the first back pressure hole 124. Thus, the degree of compression of the refrigerant at the first back pressure hole 124 is less than the degree of compression of the refrigerant at the second back pressure hole 126, and therefore the pressure at the first back pressure hole 124 is less than the pressure at the second back pressure hole 126. Therefore, by controlling the opening and closing of the first back pressure hole 124 and the second back pressure hole 126 through the first valve 130, the pressure in the back pressure chamber 152 can be adjusted, thereby adjusting the axial force between the moving disk 110 and the stationary disk 120, ensuring the sealing performance and operating efficiency of the compressor 200.

[0136] Specifically, such as Figure 3 As shown, the first disc body 190 is disposed on the stationary disc 120, and the first vortex blade 192 is disposed on the first disc body 190.

[0137] like Figure 14 As shown, the valve core of the first valve 130 can be made of high-strength aluminum alloy and is subjected to anodizing treatment to improve the durability of the first valve 130.

[0138] like Figure 1 , Figure 2 and Figure 3 As shown, in an embodiment of the present invention, a compressor 200 is provided, including a scroll assembly 100 as described in any of the above embodiments.

[0139] The compressor 200 provided in this application includes a scroll assembly 100 as described in any of the above embodiments. Therefore, this compressor 200 possesses all the beneficial effects of the scroll assembly 100 as described in any of the above embodiments.

[0140] In an embodiment of this utility model, 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 the above embodiments.

[0141] In an embodiment of this utility model, 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 the above embodiments. Therefore, this refrigeration device possesses all the beneficial effects of the scroll assembly 100 as described in any of the above embodiments or the compressor 200 as described in the above embodiments.

[0142] Specifically, the refrigerant is compressed in the compression chamber 122 of the scroll assembly 100, and the ventilation of the second back pressure port 126 is delayed by an angle greater than or equal to 60 degrees compared to the ventilation of the first back pressure port 124. That is, the compressed refrigerant will deflect by greater than or equal to 60 degrees after passing through the first back pressure port 124 before passing through the second back pressure port 126.

[0143] Refrigeration equipment can be refrigerators, air conditioners, or freezers, etc.

[0144] 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.

[0145] 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.

[0146] 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, The scroll assembly is used in a compressor, and the scroll assembly includes: Moving plate; A stationary disc meshes with a moving disc, and a compression chamber is provided between the stationary disc and the moving disc. The stationary disc is provided with a first back pressure hole and a second back pressure hole, both of which are connected to the compression chamber. The pressure at the first back pressure hole is less than the pressure at the second back pressure hole. A back pressure plate, the back pressure plate being located on the side of the stationary plate away from the moving plate; A float assembly is disposed on the side of the back pressure plate away from the stationary plate, and a back pressure cavity is provided between the float assembly and the back pressure plate. The first back pressure hole and the second back pressure hole are both connected to the back pressure cavity. A first valve is disposed on the stationary plate and can slide relative to the stationary plate to control the opening and closing of the first back pressure port and the second back pressure port; When the compressor is operating at a first load, the first valve is in a first position relative to the stationary disc, the first back pressure port connects the compression chamber and the back pressure chamber, and the second back pressure port disconnects the compression chamber and the back pressure chamber. When the compressor operates at a second load, the first valve is in a second position relative to the stationary disc, the first back pressure port disconnects the compression chamber and the back pressure chamber, and the second back pressure port connects the compression chamber and the back pressure chamber. The second load is less than the first load.

2. The vortex assembly according to claim 1, characterized in that, A bypass cavity is provided between the back pressure plate and the stationary plate; The stationary plate is provided with a first through hole, which communicates with the bypass cavity and one end of the first valve, and is used to drive the first valve to move between the first position and the second position.

3. The vortex assembly according to claim 2, characterized in that, The stationary plate is provided with a mounting hole, the first valve is disposed in the mounting hole, and the first through hole is connected to the first end of the mounting hole.

4. The vortex assembly according to claim 3, characterized in that, Also includes: An elastic element is connected to the first valve and is located at the end of the first valve away from the first through hole; When the first valve is in the first position relative to the stationary disc, the elastic element is in a compressed state.

5. The vortex assembly according to claim 4, characterized in that, The mounting hole extends through the stationary disk, and the scroll assembly further includes: A first sealing component is inserted into the first end of the mounting hole; The second sealing component is inserted into the second end of the mounting hole, and the end of the elastic element away from the first valve is connected to the second sealing component.

6. The vortex assembly according to claim 5, characterized in that, The inner wall of the first sealing component or the mounting hole is provided with a first sealing groove, and the inner wall of the second sealing component or the mounting hole is provided with a second sealing groove. The vortex assembly further includes: A first sealing ring is disposed in the first sealing groove to seal the gap between the first sealing component and the inner wall of the mounting hole. The second sealing ring is disposed in the second sealing groove and is used to seal the gap between the second sealing component and the inner wall of the mounting hole.

7. The vortex assembly according to claim 6, characterized in that, The first sealing component includes: A sealing part, wherein the sealing part is inserted into the first end of the mounting hole; A limiting part is connected to one end of the blocking part near the first valve. The limiting part includes a connecting hole and a driving hole. The driving hole is arranged along the axial direction of the first valve and the opening of the driving hole faces the first valve. The connecting hole is arranged along the radial direction of the first valve and communicates with both the driving hole and the first through hole. When the first valve is in the second position relative to the stationary disc, the first valve abuts against the limiting part and covers the opening of the drive hole.

8. The vortex assembly according to claim 7, characterized in that, When the compressor is operating at the first load, the bypass chamber is connected to the compression chamber and disconnected from the low-pressure side of the compressor. The refrigerant in the bypass chamber can enter the mounting hole and overcome the elastic force of the elastic element to drive the first valve to the first position. When the compressor is operating under a second load, the bypass chamber is connected to the compression chamber and the low-pressure side of the compressor. The elastic force of the elastic element can overcome the pressure on the low-pressure side of the compressor and drive the first valve to move to the second position.

9. The vortex assembly according to claim 6, characterized in that, The first valve is provided with a first connecting groove and a second connecting groove; when the first valve is in the first position, the first back pressure hole is connected to the back pressure chamber through the first connecting groove, and the second connecting groove is offset from the second back pressure hole; When the first valve is in the second position, the first connecting groove is offset from the first back pressure hole, and the second back pressure hole is connected to the back pressure chamber through the second connecting groove.

10. The vortex assembly according to claim 9, characterized in that, The first connecting groove is arranged circumferentially along the first valve; The second connecting groove is arranged circumferentially along the first valve.

11. The vortex assembly according to claim 9, characterized in that, The first valve is provided with a plurality of third sealing grooves, which are arranged on both sides of the first communicating groove. The vortex assembly also includes a plurality of third sealing rings, which are respectively arranged in the plurality of third sealing grooves. The first valve is provided with a plurality of fourth sealing grooves, which are arranged on both sides of the second communicating groove. The vortex assembly also includes a plurality of fourth sealing rings, which are respectively arranged in the plurality of fourth sealing grooves.

12. The vortex assembly according to claim 11, characterized in that, The end of the first through hole that communicates with the mounting hole is the first end of the first through hole; The first end of the first through hole is located between the first sealing ring and one of the plurality of third sealing rings that is closest to the first sealing component.

13. The vortex assembly according to any one of claims 1 to 12, characterized in that, The first load is a full load, and the second load is a partial load.

14. The vortex assembly according to any one of claims 1 to 12, characterized in that, The first back pressure hole is closer to the inner profile line relative to the inner and outer profile lines of the first vortex blade of the stationary disk; The second back pressure hole is closer to the outer profile line relative to the inner and outer profile lines of the first vortex blade.

15. A compressor, characterized in that, Includes the vortex assembly as described in any one of claims 1 to 14.

16. A refrigeration device, characterized in that, include: The vortex assembly as described in any one of claims 1 to 14; or The compressor as described in claim 15.

Images