Compressor and refrigeration apparatus

Abstract

The utility model provides a kind of compressor and refrigeration equipment, compressor includes: rack, rack includes installation cavity, bypass inlet being communicated with installation cavity, first mounting hole being communicated with installation cavity and bypass outlet being communicated with installation cavity;Compression component, compression component includes compression cavity;Bypass pipe, one end of bypass pipe is communicated with compression cavity, the other end of bypass pipe is communicated with bypass inlet;Control valve, at least part of control valve is installed to installation cavity by first mounting hole, control valve is used to control the on-off between bypass inlet and bypass outlet.In the application, the structure of installing control valve is arranged on the rack, the independent mounting seat connecting bypass pipe and electromagnetic valve is saved, the total number of parts of compressor is reduced, the assembly process is simplified, the independent mounting seat occupies the internal space of rack is avoided, especially for small shell diameter compressor, more abundant design space is released for rack.

Description

Technical Field

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

[0002] Currently, scroll compressors are widely used in refrigeration and heating industries, playing a crucial role in compressing the working fluid in refrigeration systems. To meet the most unfavorable system operating conditions, scroll compressors are typically selected based on their maximum capacity. However, these compressors operate under low load conditions for most of the time, leading to a decrease in overall system efficiency. To improve the refrigeration system's efficiency during normal operation while still meeting the most unfavorable system operating conditions, the compressor needs a variable compression capacity. To achieve this variable compression capacity, a bypass line and valves controlling the opening and closing of the bypass line are incorporated into the compressor.

[0003] However, in the relevant solutions, the bypass pipe of the compressor is generally not directly connected to the solenoid valve due to process limitations, and needs to be connected to the solenoid valve through a mounting bracket. This structure results in more internal components for the compressor, and the mounting bracket tends to occupy the frame space, which is especially detrimental to the frame design and the assembly of the frame within the housing for compressors with small shell diameters. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

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

[0006] A second aspect of this utility model also provides a refrigeration device.

[0007] In view of the above, the first aspect of this utility model provides a compressor, comprising: a frame, the frame including a mounting cavity, a bypass inlet communicating with the mounting cavity, a first mounting hole communicating with the mounting cavity, and a bypass outlet communicating with the mounting cavity; a compression assembly including a compression cavity; a bypass pipe, one end of the bypass pipe communicating with the compression cavity and the other end of the bypass pipe communicating with the bypass inlet, for conveying gas in the compression cavity to the mounting cavity through the bypass inlet; and a control valve, at least a portion of the control valve being mounted into the mounting cavity through the first mounting hole, the control valve being used to control the on / off state between the bypass inlet and the bypass outlet.

[0008] In these technical solutions, the compressor includes a frame, a compression assembly, a bypass pipe, and a control valve. The frame serves as a basic load-bearing component for mounting the compression assembly and other structures. The frame also has an internal mounting cavity with a bypass inlet, a first mounting hole, and a bypass outlet communicating with the mounting cavity. The compression assembly includes a compression cavity connected to the bypass outlet of the frame. One end of the bypass pipe is connected to the bypass inlet of the frame, and the bypass pipe's function is to transport gas from the compression cavity to the interior of the frame. At least a portion of the control valve's structure is mounted in the mounting cavity through the first mounting hole of the frame, and the control valve's function is to control the opening and closing of the passage between the bypass inlet and the bypass outlet. The specific working principle is as follows: the bypass pipe introduces the gas in the compression chamber into the bypass inlet of the frame. After the gas enters the mounting cavity of the frame, the flow state is controlled by the control valve installed at the first mounting hole. When the control valve is open, the gas in the mounting cavity flows into the compression cavity of the compression assembly through the bypass outlet and participates in the compression process (such as assisting in establishing the initial pressure during startup and adjusting the compression flow rate during operation). When the control valve is closed, the passage between the bypass inlet and the bypass outlet is cut off, preventing gas flow.

[0009] In this embodiment, the structure for installing the control valve (i.e., the mounting base in the relevant scheme) is set on the frame, which effectively solves the problem caused by the need for the bypass pipe to be connected to the solenoid valve through an independent mounting base in the compressor of the relevant scheme. On the one hand, this eliminates the independent mounting base connecting the bypass pipe and the solenoid valve, reducing the total number of compressor parts, simplifying the assembly process, and thus reducing manufacturing costs. On the other hand, it avoids the independent mounting base occupying internal space of the frame, especially for small-diameter compressors, freeing up more design space for the frame and optimizing the compact layout of internal compressor components.

[0010] Meanwhile, the frame is a one-piece structure. This one-piece structure eliminates the interference of independent mounting brackets when installing the frame into the housing, allowing for smoother assembly of the frame and improving the overall assembly convenience and efficiency of the compressor. This design not only achieves cost control but also significantly improves the structural rationality and production feasibility of small-diameter compressors through space optimization and assembly simplification.

[0011] The control valve can open or close the bypass pipe. When the bypass pipe is open, some gas in the compression chamber can return to the compression chamber through the bypass pipe, meaning this portion of gas does not participate in compression. This reduces the compressor's volume and displacement, meeting the compressor's operating requirements under low-load conditions. When the bypass pipe is closed, all gas participates in compression, increasing the compressor's volume and displacement, meeting the compressor's operating requirements under the most unfavorable conditions.

[0012] In any of the above technical solutions, optionally, the compression assembly includes: a moving scroll plate, disposed on one side of the frame; and a stationary scroll plate, disposed on the side of the moving scroll plate away from the frame, forming a compression chamber with the moving scroll plate.

[0013] In these technical solutions, a compression assembly is used to compress the gas. Specifically, the compression assembly includes a stationary scroll plate and a moving scroll plate, which together form a compression chamber to compress the gas. In other words, the compressor is a scroll compressor. By installing an openable and closable bypass pipe on the scroll compressor, its capacity can be adjusted to meet both the most unfavorable system operating conditions and low-load operating conditions. Furthermore, the moving scroll plate is directly mounted on the upper side of the frame, making the bypass pipe relatively close to the compression chamber.

[0014] In any of the above technical solutions, optionally, the frame includes: a frame body with a shaft hole for the crankshaft to pass through; a plurality of bosses spaced apart circumferentially along the shaft hole on the frame body, and a fixing structure for fixing the stationary scroll plate on the bosses; and a base body disposed between two adjacent bosses, with a mounting cavity disposed inside the base body, and a bypass inlet, a first mounting hole and a bypass outlet disposed on the base body.

[0015] In these technical solutions, the frame includes a frame body, multiple bosses, and a base body. The frame body serves as the basic load-bearing structure, with shaft holes for the crankshaft to pass through, providing a motion channel for the crankshaft to drive the moving scroll. Multiple bosses are distributed circumferentially on the frame body along the shaft holes. Each boss has a fixing structure (such as bolt holes, positioning grooves, etc.) for fixing the stationary scroll. This structure stably mounts the stationary scroll to the frame body, allowing the stationary scroll to mesh with the moving scroll to form a compression chamber, ensuring the sealing and accuracy of the compression process. The base body is embedded between two adjacent bosses, forming an installation cavity inside. A bypass inlet, a first mounting hole, and a bypass outlet are integrated on the base body. The bypass inlet is used to connect an external bypass pipe to introduce gas into the compression chamber. The first mounting hole is used to install a control valve (such as a solenoid valve) to control the bypass on / off. The bypass outlet is connected to the compression chamber or a related gas path. The working principle is as follows: the crankshaft passes through the frame body through the shaft hole and connects to the moving scroll plate. The moving scroll plate meshes with the stationary scroll plate to form a compression chamber. The bypass pipe introduces gas from the bypass inlet into the mounting cavity of the housing body. After being controlled by the control valve installed in the first mounting hole, the gas enters the compression chamber from the bypass outlet, realizing dynamic adjustment of the compression volume. This design integrates the bypass inlet, control valve mounting hole, and bypass outlet into the same component through the structure of the housing body integrated between adjacent bosses of the frame body. This eliminates the need for a separate mounting seat connecting the bypass pipe and control valve in traditional solutions, reducing the number of parts and assembly steps, and lowering manufacturing costs. At the same time, the rigidity of the boss fixing the stationary scroll plate combined with the compactness of the bypass structure integrated in the housing body optimizes the internal space layout of the frame, making it particularly suitable for small-diameter compressors. It avoids interference from the independent mounting seat when the frame is installed into the housing, improving assembly convenience and overall structural stability.

[0016] In any of the above technical solutions, optionally, the base portion is connected to two adjacent boss portions along the circumferential direction of the shaft hole. The frame portion, the multiple boss portions, and the base portion are an integral structure.

[0017] In these technical solutions, the base portion is connected to two adjacent boss portions along the circumferential direction of the shaft hole. That is, the base portion connects the two adjacent boss portions into a whole. The whole formed by the base portion and the two boss portions can not only install the control valve, but also fix the stationary scroll plate. This arrangement is beneficial for optimizing the frame structure and for the frame's machining design.

[0018] Furthermore, the frame is a one-piece structure, meaning the frame body, multiple bosses, and the base are connected as a single unit. This one-piece structure reduces the number of parts and assembly errors, improves the overall structural strength and rigidity of the frame, avoids uneven stress or deformation caused by multiple component connections, and ensures the motion accuracy of the crankshaft when passing through the shaft hole and the stability of the compression assembly. Simultaneously, the connection between the base and adjacent bosses forms a cohesive load-bearing unit, enhancing the positioning accuracy of the stationary scroll plate fixed by the bosses (preventing displacement of the stationary scroll plate and compression chamber sealing failure due to loosening of the base), and ensuring a tight fit between the mounting cavity, bypass inlet, and other structures of the base and the bosses, further optimizing the internal space of the compressor frame, especially suitable for the compact layout requirements of small-diameter compressors. In addition, the one-piece design eliminates the interface gaps and assembly tolerances of traditional multi-component connections, avoiding interference in bypass pipeline connections or control valve installation deviations caused by structural dispersion, and improving the sealing performance and control reliability of the bypass system. In addition, one-piece casting or injection molding reduces material consumption and processing costs, while the improved reliability of the overall structure reduces the need for later maintenance, thus comprehensively reducing the life cycle cost of the compressor.

[0019] In any of the above technical solutions, optionally, a gap is provided between a portion of the base part and the frame part along the radial direction of the shaft hole, the gap forming a through hole, the through hole extending along the axial direction of the compressor.

[0020] In any of the above technical solutions, optionally, the fixing structure is a threaded mounting hole provided on the boss portion, and the boss portion is connected to the stationary vortex disk by a first bolt.

[0021] In these technical solutions, threaded connections provide reliable preload and connection strength. Through the axial tightening action of the bolts, loosening or displacement of the stationary scroll plate due to vibration, gas pressure pulsation, and other factors during compressor operation is effectively prevented. This ensures stable meshing between the stationary and moving scroll plates, reduces the risk of compression chamber leakage, and improves compression efficiency. Simultaneously, bolted connections offer excellent disassembly. When the stationary scroll plate needs maintenance or replacement, disassembly can be completed simply by loosening the first bolt, without damaging the frame or other components, significantly reducing maintenance costs and time. Furthermore, the structural design of multiple bosses disperses the bolt load, preventing localized stress concentration on the stationary scroll plate and extending its service life.

[0022] Furthermore, compared to non-removable connections such as welding and riveting, threaded connections, while ensuring connection rigidity, retain adjustment margins between components (such as minor corrections to the levelness of the stationary scroll plate), accommodating tolerance differences between different batches of parts and improving assembly consistency. Therefore, connecting the frame and stationary scroll plate with the first bolt balances structural strength, installation accuracy, maintenance convenience, and manufacturing adaptability, providing a reliable guarantee for the long-term stable operation of the compressor.

[0023] Optionally, in any of the above technical solutions, the compressor further includes: a housing, a frame and a compression assembly installed inside the housing, a second mounting hole provided on the housing, a first mounting hole corresponding to the second mounting hole, and at least a portion of the control valve passing through the second mounting hole and the first mounting hole and installed in the mounting cavity.

[0024] In these technical solutions, the corresponding arrangement of the second mounting hole on the housing and the first mounting hole on the frame allows the control valve to directly pass through both holes and be installed in the mounting cavity of the seat. This eliminates the need for a separate mounting base connecting the control valve and the frame in traditional solutions, reducing a key component, simplifying the overall structure of the compressor, and lowering the costs of parts procurement, storage, and assembly. Furthermore, the precise alignment of the holes on the housing and frame provides a through-type installation guide for the control valve. During assembly, the control valve only needs to be pushed into the mounting cavity along the axis of the two holes and fixed, without additional positioning or calibration, significantly improving assembly efficiency and consistency, especially suitable for the mass production needs of automated production lines. In addition, the housing and frame together constitute the mounting support structure for the control valve. Through the coordinated limiting of the two holes, the radial and axial displacement of the control valve is effectively constrained, preventing loosening or displacement caused by vibration or gas pressure pulsation, ensuring a sealed connection between the control valve and the bypass inlet and outlet, and reducing the risk of leakage. Furthermore, the through-hole design avoids the structural protrusion that may occur with traditional mounting brackets. Especially in miniaturized compressors, it maximizes the compact space between the casing and the frame, optimizes the internal layout, and frees up more design margin for other components (such as sensors and pipelines).

[0025] Optionally, in any of the above technical solutions, the control valve is welded to the housing.

[0026] In these technical solutions, by welding the control valve to the housing, the installation stability of the control valve can be improved, the control valve can be prevented from loosening, and the sealed connection between the frame and the housing can be ensured.

[0027] In any of the above technical solutions, optionally, the control valve includes a valve seat, a valve core, and a valve port seat connected to each other. Part of the valve seat is installed in the second mounting hole. The valve seat abuts against the frame and extends into the first mounting hole. One end of the valve seat extending into the frame is provided with a receiving cavity for accommodating the valve core. The receiving cavity is connected to the mounting cavity. The valve port seat is located at the bypass outlet. The valve port seat is provided with a valve port. The receiving cavity is connected to the valve port. The valve core can move towards or away from the valve port to close or open the valve port to control the connection and disconnection between the bypass inlet and the bypass outlet.

[0028] In this technical solution, the control valve includes a valve seat, a valve core, and a valve port seat. The valve seat serves as a support for the control valve, supporting the installation of the valve core. The valve core is a moving part, capable of moving towards or away from the valve port. The movement of the valve core within the valve seat opens or closes the valve port located at the bypass outlet, thus enabling or disabling communication between the bypass inlet and outlet. The valve port seat is located at the bypass outlet and forms a structure that mates with the valve core. The valve port seat facilitates the opening and closing of the bypass outlet by the valve core; for example, the valve core and valve port seat provide a better sealing fit compared to the valve core directly contacting the bypass outlet, preventing gas leakage.

[0029] Optionally, in any of the above technical solutions, the valve seat and the seat body are an integral structure.

[0030] In this technical solution, the valve seat and the seat body are an integral structure. For example, the valve seat can be part of the seat body, or the valve seat can be installed on the seat body by welding, gluing or other methods. Of course, the valve seat can also be detachably installed on the seat body.

[0031] In other solutions, the valve seat may not be required, and the valve core may be used directly to open or close the bypass outlet.

[0032] In any of the above technical solutions, optionally, a first sealing element is provided between the valve seat and the side wall of the bypass outlet; and / or a second sealing element is provided between the valve core and the inner wall of the receiving cavity; and / or a third sealing element is provided between the valve seat and the frame.

[0033] In these technical solutions, the first seal seals the gap between the valve seat and the bypass outlet, preventing gas leakage from this gap. The second seal seals the gap between the valve core and the receiving cavity, preventing gas leakage from this gap. The third seal seals the gap between the valve seat and the frame, preventing gas leakage from this gap. Thus, the first, second, and third seals prevent gas leakage from the mounting cavity through the gap between the control valve and the inner wall of the mounting cavity, improving the overall sealing reliability of the product.

[0034] In any of the above technical solutions, optionally, the diameter of the first mounting hole is larger than the diameter of the bypass outlet; and / or the diameter of the first mounting hole is smaller than the diameter of the mounting cavity.

[0035] In these technical solutions, the diameter of the first mounting hole is set relatively large, which facilitates the installation of the valve seat and other structures of the control valve. The bypass outlet only requires a valve seat; therefore, the diameter of the bypass outlet can be set smaller, which also reduces the size of the valve core and thus lowers its cost. Simultaneously, the mounting cavity is a channel for gas flow; setting the mounting cavity relatively large ensures smooth gas flow and prevents the control valve from clogging the mounting cavity.

[0036] In any of the above technical solutions, optionally, the bypass inlet is arranged along the axial direction of the compressor, and / or the first mounting hole and the bypass outlet are arranged along the radial direction of the compressor.

[0037] In this technical solution, the bypass inlet is set along the axial direction of the compressor, i.e. the height direction, and the first mounting hole and the bypass outlet are set along the radial direction of the compressor. This structure makes the entire bypass flow path the shortest and also makes it very convenient to install the control valve. For example, the control valve can be directly inserted into the first mounting hole in the radial direction and then installed into the mounting cavity.

[0038] In any of the above technical solutions, optionally, part or all of the control valve is detachably mounted on the frame.

[0039] In these technical solutions, by directly mounting part or all of the control valve onto the frame, the control valve and the frame are more compact, which helps to reduce the overall size of the machine. The control valve is detachable, facilitating its replacement and maintenance.

[0040] In any of the above technical solutions, optionally, the control valve is connected to the frame by a thread or a second bolt, and at least a portion of the control valve is in sealed contact with the inner wall of the mounting cavity.

[0041] In these technical solutions, an external thread can be provided on the control valve, and an internal thread can be provided on the inner wall of the mounting cavity of the frame. In this way, the control valve can be installed on the frame by screwing on the thread, so that the control valve part extends into the mounting cavity.

[0042] Optionally, the control valve is a solenoid valve.

[0043] In these technical solutions, the solenoid valve achieves automatic control via electrical signals, precisely adjusting the on / off state or opening degree of the bypass pipeline without manual operation. This adapts to the dynamic load changes of the compressor. Specifically, rapid opening of the bypass at low loads reduces effective displacement, while rapid closing at high loads ensures maximum volumetric output, significantly improving the system's automation level and adaptability to different operating conditions. Furthermore, the solenoid valve's compact structure and fast response speed (millisecond-level action) are highly compatible with the miniaturized mounting cavity and housing holes of the housing, saving layout space within a compact footprint. The integrated rigid support of the frame also reduces operating vibration, decreases noise, and extends service life.

[0044] In any of the above technical solutions, optionally, the compression chamber includes a bypass pipe, and one end of the bypass pipe away from the bypass inlet is connected to the low-pressure compression chamber.

[0045] According to a second aspect of the present invention, a refrigeration device is also provided, comprising: a compressor as described in any of the above embodiments.

[0046] The refrigeration equipment provided in the second aspect of this utility model, since it includes the compressor proposed in any of the above embodiments, has all the beneficial effects of the compressor.

[0047] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0048] 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:

[0049] Figure 1 One of the structural schematic diagrams of a compressor according to an embodiment of the present invention is shown;

[0050] Figure 2 A second schematic diagram of the compressor according to an embodiment of the present invention is shown;

[0051] Figure 3 The third schematic diagram shows the structure of a compressor according to an embodiment of the present invention;

[0052] Figure 4 The fourth schematic diagram shows the structure of a compressor according to one embodiment of the present invention.

[0053] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0054] 1. Frame, 10. Mounting cavity, 11. Bypass inlet, 12. First mounting hole, 13. Bypass outlet, 14. Frame body, 142. Shaft hole, 15. Boss, 152. Fixing structure, 154. Threaded mounting hole, 16. Seat body, 2. Compression assembly, 22. Compression cavity, 24. Stationary scroll plate, 26. Moving scroll plate, 3. Bypass pipe, 4. Control valve, 42. Valve seat, 422. Receiving cavity, 44. Valve core, 46. Valve port seat, 462. Valve port, 5. Housing, 52. Second mounting hole, 6. Thread, 7. Spacing, 82. First seal, 84. Second seal, 86. Third seal. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] The following reference Figures 1 to 4 This invention describes a compressor proposed according to some embodiments of the present invention.

[0058] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first aspect of this utility model discloses a compressor, including a frame 1, a compression assembly 2, a bypass pipe 3, and a control valve 4. The frame 1 serves as a basic load-bearing component for mounting the compression assembly 2 and other structures. The frame 1 has an internal mounting cavity 10, and a bypass inlet 11, a first mounting hole 12, and a bypass outlet 13 communicating with the mounting cavity 10. The compression assembly 2 includes a compression cavity 22, which is connected to the bypass outlet 13 of the frame 1. One end of the bypass pipe 3 is connected to the bypass inlet 11 of the frame 1, and the bypass pipe 3 serves to transport gas from the compression cavity 22 to the interior of the frame 1. At least a portion of the control valve 4 is mounted in the mounting cavity 10 through the first mounting hole 12 of the frame 1, and the control valve 4 controls the opening and closing of the passage between the bypass inlet 11 and the bypass outlet 13. The specific working principle is as follows: the bypass pipe 3 introduces the gas in the compression chamber 22 into the bypass inlet 11 of the frame 1. After the gas enters the mounting chamber 10 of the frame 1, the flow state is controlled by the control valve 4 installed at the first mounting hole 12. When the control valve 4 is open, the gas in the mounting chamber 10 flows into the compression chamber 22 of the compression assembly 2 through the bypass outlet 13 and participates in the compression process (such as assisting in establishing the initial pressure during startup and adjusting the compression flow rate during operation). When the control valve 4 is closed, the passage between the bypass inlet 11 and the bypass outlet 13 is cut off, preventing gas flow.

[0059] In this embodiment, the structure for installing the control valve 4 (i.e., the mounting base in the relevant scheme) is set on the frame 1, which effectively solves the problem caused by the bypass pipe 3 needing to be connected to the solenoid valve through an independent mounting base in the compressor of the relevant scheme. On the one hand, this eliminates the independent mounting base connecting the bypass pipe 3 and the solenoid valve, reducing the total number of compressor parts, simplifying the assembly process, and thus reducing manufacturing costs. On the other hand, it avoids the independent mounting base occupying the internal space of the frame 1, especially for small-diameter compressors, freeing up more design space for the frame 1 and optimizing the compact layout of the internal components of the compressor.

[0060] Meanwhile, the frame 1 is a one-piece structure. This one-piece structure eliminates the interference of independent mounting brackets when installing the frame 1 into the housing, allowing for smoother assembly of the frame 1 into the housing and improving the overall assembly convenience and efficiency of the compressor. This design not only achieves cost control but also significantly improves the structural rationality and production feasibility of small-diameter compressors through space optimization and assembly simplification.

[0061] The control valve 4 can open or close the bypass pipe 3. When the bypass pipe 3 is open, some gas in the compression chamber 22 can return to the compression chamber 22 through the bypass pipe 3, meaning this portion of gas does not participate in compression. This reduces the compressor's volume and displacement, meeting the compressor's operating requirements under low-load conditions. When the bypass pipe 3 is closed, all gas participates in compression, increasing the compressor's volume and displacement, meeting the compressor's operating requirements under the most unfavorable conditions.

[0062] In any of the above embodiments, optionally, as Figure 1 and Figure 4 As shown, the compression assembly 2 is used to compress the gas. Specifically, the compression assembly 2 includes a stationary scroll plate 24 and a movable scroll plate 26. The stationary scroll plate 24 and the movable scroll plate 26 form a compression chamber 22 to compress the gas; that is, the compressor is a scroll compressor. By providing an openable and closable bypass pipe 3 on the scroll compressor, the capacity of the scroll compressor can be adjusted so that its capacity can meet the most unfavorable system operating conditions as well as low-load operating conditions. Furthermore, the movable scroll plate 26 is directly mounted on the frame 1, which makes the bypass pipe relatively close to the compression chamber 22.

[0063] In any of the above embodiments, optionally, as Figure 1 and Figure 2As shown, the frame 1 includes a frame body 14, multiple bosses 15, and a base 16. The frame body 14 serves as the basic load-bearing structure, with a shaft hole 142 for the crankshaft to pass through, providing a motion channel for the crankshaft to drive the scroll plate 26. The multiple bosses 15 are distributed circumferentially on the frame body 14 along the shaft hole 142. Each boss 15 has a fixing structure 152 (such as bolt holes, positioning grooves, etc.) for fixing the stationary scroll plate 24. Through this structure, the stationary scroll plate 24 is stably installed on the frame body 14, so that the stationary scroll plate 24 and the base 16 are connected. The moving scroll plate 26 engages to form the compression chamber 22, ensuring the sealing and precision of the compression process. The seat portion 16 is embedded between two adjacent boss portions 15, forming an installation cavity 10 inside. A bypass inlet 11, a first mounting hole 12, and a bypass outlet 13 are integrated on the seat portion 16. The bypass inlet 11 is used to connect to an external bypass pipe 3 to introduce gas into the compression chamber 22. The first mounting hole 12 is used to install a control valve 4 (such as a solenoid valve) to control the bypass on / off. The bypass outlet 13 is connected to the compression chamber 22 or a related gas path. The working principle is as follows: the crankshaft passes through the frame portion 14 through the shaft hole 142 and connects to the moving scroll plate 26. The moving scroll plate 26 engages with the stationary scroll plate 24 to form the compression chamber 22. The bypass pipe 3 introduces gas from the bypass inlet 11 into the installation cavity 10 of the seat portion 16. After being controlled by the control valve 4 installed in the first mounting hole 12, the gas enters the compression chamber 22 from the bypass outlet 13, realizing dynamic adjustment of the compression volume. This design integrates the bypass inlet 11, the control valve 4 mounting hole, and the bypass outlet 13 into a single component by integrating the base portion 16 between the adjacent boss portions 15 of the frame portion 14. This eliminates the need for a separate mounting base connecting the bypass pipe 3 and the control valve 4 in traditional solutions, reducing the number of parts and assembly steps, and lowering manufacturing costs. At the same time, the rigidity of the boss portion 15 fixing the stationary scroll plate 24, combined with the compactness of the bypass structure integrated in the base portion 16, optimizes the internal space layout of the frame 1, making it particularly suitable for small-diameter compressors. It avoids interference from the independent mounting base when the frame 1 is installed in the housing, improving assembly convenience and overall structural stability.

[0064] In any of the above embodiments, optionally, as Figure 1 and Figure 2 As shown, along the circumferential direction of the shaft hole 142, the base portion 16 is connected to two adjacent boss portions 15. The frame portion 14, the multiple boss portions 15, and the base portion 16 are an integral structure.

[0065] In these embodiments, along the circumferential direction of the shaft hole 142, the seat portion 16 is connected to two adjacent boss portions 15, that is, the seat portion 16 connects the two adjacent boss portions 15 into a whole. The whole formed by the seat portion 16 and the two boss portions 15 can not only install the control valve 4, but also fix the stationary scroll plate 24. This arrangement is beneficial to optimizing the structure of the frame 1 and to the processing design of the frame 1.

[0066] Furthermore, the frame 1 is a one-piece structure, meaning that the frame body 14, multiple bosses 15, and the base 16 are connected as a single unit. This one-piece structure reduces the number of parts and assembly errors, improves the overall structural strength and rigidity of the frame 1, avoids uneven stress or deformation caused by the connection of multiple parts, and ensures the motion accuracy of the crankshaft when passing through the shaft hole 142 and the stability of the compression assembly 2. At the same time, the connection between the base 16 and the adjacent bosses 15 forms a cooperating load-bearing whole, which not only strengthens the positioning accuracy of the bosses 15 in fixing the stationary scroll 24 (preventing the stationary scroll 24 from shifting due to loosening of the base 16 and the failure of the sealing of the compression chamber 22), but also ensures that the mounting cavity 10, bypass inlet 11, and other structures of the base 16 fit tightly with the bosses 15, further improving the internal space of the compressor frame 1, especially adapting to the compact layout requirements of small-diameter compressors. Furthermore, the integrated design eliminates the interface gaps and assembly tolerances inherent in traditional multi-component connections, avoiding interference in bypass pipeline connections or installation deviations of control valves caused by structural dispersion, thus improving the sealing performance and control reliability of the bypass system. In addition, integrated casting or injection molding reduces material consumption and processing costs, while the improved overall structural reliability reduces the need for subsequent maintenance, comprehensively lowering the compressor's lifecycle cost.

[0067] In any of the above embodiments, optionally, as Figure 1 and Figure 2 As shown, a gap 7 is provided between a portion of the base portion 16 and the frame portion 14 along the radial direction of the shaft hole 142. The gap 7 forms a through hole that extends along the axial direction of the compressor.

[0068] In any of the above embodiments, optionally, as Figure 1 As shown, the fixing structure 152 is a threaded mounting hole 154 provided on the boss portion 15, and the boss portion 15 is connected to the stationary vortex disk 24 by the first bolt.

[0069] In these embodiments, the threaded connection 6 provides reliable preload and connection strength. Through the axial tightening action of the bolts, it effectively prevents the stationary scroll 24 from loosening or displacing due to vibration, gas pressure pulsation, or other factors during compressor operation. This ensures stable meshing between the stationary scroll 24 and the moving scroll 26, reduces the risk of leakage in the compression chamber 22, and improves compression efficiency. Simultaneously, the bolted connection offers excellent disassembly. When the stationary scroll 24 needs maintenance or replacement, disassembly can be completed simply by loosening the first bolt, without damaging the frame 1 or other components, significantly reducing maintenance costs and time. Furthermore, the structural design of multiple bosses 15 disperses the bolt load, preventing localized stress concentration in the stationary scroll 24 and extending its service life.

[0070] Furthermore, compared to non-removable connections such as welding and riveting, the threaded connection (6) ensures connection rigidity while retaining adjustment margins between components (such as minor adjustments to the levelness of the stationary scroll plate 24), accommodating tolerance differences between different batches of parts and improving assembly consistency. Therefore, connecting the frame 1 and the stationary scroll plate 24 with the first bolt balances structural strength, installation accuracy, maintenance convenience, and manufacturing adaptability, providing a reliable guarantee for the long-term stable operation of the compressor.

[0071] In any of the above embodiments, optionally, as Figure 1 , Figure 2 and Figure 4 As shown, the compressor also includes: a housing 5, a frame 1 and a compression assembly 2 are installed inside the housing 5, a second mounting hole 52 is provided on the housing 5, a first mounting hole 12 is provided corresponding to the second mounting hole 52, and at least a portion of the control valve 4 passes through the second mounting hole 52 and the first mounting hole 12 and is installed in the mounting cavity 10.

[0072] In these embodiments, the corresponding arrangement of the second mounting hole 52 of the housing 5 and the first mounting hole 12 of the frame 1 allows the control valve 4 to directly pass through the two holes and be installed in the mounting cavity 10 of the seat 16. This eliminates the need for a separate mounting base connecting the control valve 4 and the frame 1 in traditional solutions, reducing a key component, simplifying the overall structure of the compressor, and lowering the costs of parts procurement, storage, and assembly. Furthermore, the precise correspondence between the holes in the housing 5 and the frame 1 provides a through-type installation guide for the control valve 4. During assembly, the control valve 4 only needs to be pushed into the mounting cavity 10 along the axis of the two holes and fixed, without additional positioning or calibration, significantly improving assembly efficiency and consistency, especially suitable for the mass production needs of automated production lines. In addition, the housing 5 and the frame 1 together constitute the mounting support structure for the control valve 4. Through the coordinated limiting of the two holes, the radial and axial displacement of the control valve 4 is effectively constrained, preventing loosening or displacement caused by vibration or gas pressure pulsation, ensuring a sealed connection between the control valve 4 and the bypass inlet 11 and outlet, and reducing the risk of leakage. Furthermore, the through-hole design avoids the structural protrusion that may occur with traditional mounting brackets. Especially in miniaturized compressors, it maximizes the compact space between the outer casing 5 and the frame 1, optimizes the internal layout, and frees up more design margin for other components (such as sensors and pipelines).

[0073] In any of the above embodiments, the control valve 4 is optionally welded to the housing 5.

[0074] In these embodiments, by welding the control valve 4 to the housing 5, the installation stability of the control valve 4 can be improved, loosening of the control valve 4 can be avoided, and a sealed connection between the frame 1 and the housing 5 can be ensured.

[0075] In any of the above embodiments, optionally, as Figure 1 , Figure 2 and Figure 3 As shown, the control valve 4 includes a valve seat 42, a valve core 44, and a valve port seat 46 connected to each other. Part of the valve seat 42 is installed in the second mounting hole 52. The valve seat 42 abuts against the frame 1 and extends into the first mounting hole 12. One end of the valve seat 42 extending into the frame 1 is provided with a receiving cavity 422 for accommodating the valve core 44. The receiving cavity 422 communicates with the mounting cavity 10. The valve port seat 46 is located at the bypass outlet 13. The valve port seat 46 is provided with a valve port 462. The receiving cavity 422 communicates with the valve port 462. The valve core 44 can move towards or away from the valve port 462 to close or open the valve port 462 to control the on / off connection between the bypass inlet 11 and the bypass outlet 13.

[0076] In this embodiment, the control valve 4 includes a valve seat 42, a valve core 44, and a valve port seat 46. The valve seat 42 serves as a support for the control valve 4, supporting the installation of the valve core 44. The valve core 44 is a moving component, capable of moving towards or away from the valve port 462. The movement of the valve core 44 within the valve seat 42 opens or closes the valve port 462 located at the bypass outlet 13, thereby enabling or disabling communication between the bypass inlet 11 and the bypass outlet 13. The valve port seat 46 is located at the bypass outlet 13 and forms a structure that mates with the valve core 44. The valve port seat 46 facilitates the opening and closing of the bypass outlet 13 by the valve core 44. For example, the valve core 44 and the valve port seat 46 provide a better sealing fit compared to the valve core 44 directly contacting the bypass outlet 13, thus preventing gas leakage.

[0077] In any of the above embodiments, the valve seat 46 and the seat body 16 are optionally an integral structure.

[0078] In this embodiment, the valve seat 46 and the seat body 16 are an integral structure. For example, the valve seat 46 can be a part of the seat body 16, or the valve seat 46 can be installed on the seat body 16 by welding, gluing or other means. Of course, the valve seat 46 can also be detachably installed on the seat body 16.

[0079] In other schemes, the valve seat 46 may not be provided, and the valve core 44 may be used directly to open or close the bypass outlet 13.

[0080] In any of the above embodiments, optionally, as Figure 1 , Figure 2 and Figure 3 As shown, a first seal 82 is provided between the valve seat 46 and the side wall of the bypass outlet 13; and / or a second seal 84 is provided between the valve core 44 and the inner wall of the receiving cavity 422; and / or a third seal 86 is provided between the valve seat 42 and the frame 1.

[0081] In these embodiments, the first seal 82 seals the gap between the valve seat 46 and the bypass outlet 13, preventing gas leakage from this gap. The second seal 84 seals the gap between the valve core 44 and the receiving cavity 422, preventing gas leakage from this gap. The third seal 86 seals the gap between the valve seat 42 and the frame 1, preventing gas leakage from this gap. Thus, the first seal 82, the second seal 84, and the third seal 86 prevent gas leakage from the mounting cavity 10 through the control valve 4 or the gap between the control valve 4 and the inner wall of the mounting cavity 10, improving the overall sealing reliability of the product.

[0082] In any of the above embodiments, optionally, as Figure 1 , Figure 2 and Figure 3 As shown, the diameter of the first mounting hole 12 is larger than the diameter of the bypass outlet 13; and / or the diameter of the first mounting hole 12 is smaller than the diameter of the mounting cavity 10.

[0083] In these embodiments, the diameter of the first mounting hole 12 is set relatively large to facilitate the installation of structures such as the valve seat 42 of the control valve 4. The bypass outlet 13 only requires a valve seat 46; therefore, the diameter of the bypass outlet 13 can be set relatively small, which also reduces the size of the valve core 44, thereby lowering its cost. Simultaneously, the mounting cavity 10 serves as a channel for gas flow; setting the mounting cavity 10 relatively large ensures smooth gas flow and prevents the control valve 4 from clogging the mounting cavity 10.

[0084] In any of the above embodiments, optionally, as Figure 1 , Figure 2 and Figure 3 As shown, the bypass inlet 11 is arranged along the axial direction of the compressor, and / or the first mounting hole 12 and the bypass outlet 13 are arranged along the radial direction of the compressor.

[0085] In this embodiment, the bypass inlet 11 is arranged along the axial direction of the compressor, i.e., the height direction, while the first mounting hole 12 and the bypass outlet 13 are arranged along the radial direction of the compressor. This structure minimizes the path of the entire bypass flow channel and also facilitates the installation of the control valve 4. For example, the control valve 4 can be directly inserted radially into the first mounting hole 12 and then installed into the mounting cavity 10. In any of the above embodiments, optionally, part or all of the control valve 4 can be detachably mounted on the frame 1.

[0086] In these embodiments, by directly mounting part or all of the control valve 4 onto the frame 1, the control valve 4 and the frame 1 are more compact, which helps to reduce the overall size of the machine. The control valve 4 is detachable, which facilitates its replacement and maintenance.

[0087] In any of the above embodiments, optionally, as Figure 3 As shown, the control valve 4 is connected to the frame 1 by a thread 6 or a second bolt, and at least a portion of the control valve 4 is in sealed contact with the inner wall of the mounting cavity 10.

[0088] In these embodiments, an external thread 6 can be provided on the control valve 4, and an internal thread 6 can be provided on the inner wall of the mounting cavity 10 of the frame 1. In this way, the control valve 4 can be screwed onto the frame 1 through the thread 6, so that the control valve 4 can be partially inserted into the mounting cavity 10.

[0089] Optionally, control valve 4 is a solenoid valve.

[0090] In these embodiments, the solenoid valve is automatically controlled by electrical signals, precisely adjusting the on / off state or opening degree of the bypass pipeline without manual operation. This adapts to the dynamic load changes of the compressor. Specifically, rapid opening of the bypass at low loads reduces effective displacement, while rapid closing at high loads ensures maximum volumetric output, significantly improving the system's automation level and adaptability to different operating conditions. Furthermore, the solenoid valve's compact structure and fast response speed (millisecond-level action) are highly compatible with the miniaturized mounting cavity 10 of the seat 16 and the hole design of the outer shell 5. This saves layout space within the compact area and reduces operating vibration, noise, and extends service life through the integrated rigid support of the frame 1.

[0091] In any of the above embodiments, optionally, the compression chamber 22 includes a bypass pipe 3, one end of which, away from the bypass inlet 11, is connected to the low-pressure compression chamber 22.

[0092] According to a second aspect of the present invention, a refrigeration device (not shown in the figure) is also provided, comprising: a compressor as described in any of the above embodiments.

[0093] The refrigeration equipment provided in the second aspect of this utility model, since it includes the compressor proposed in any of the above embodiments, has all the beneficial effects of the compressor.

[0094] The compressor in a specific embodiment is described below.

[0095] In constant-speed compressors, the compressor's compression volume can be changed via a bypass, requiring the bypass pipe's opening and closing to be controlled by a solenoid valve. However, due to manufacturing limitations, the bypass pipe generally cannot be directly connected to the solenoid valve and must be connected via a valve seat (mounting seat). In related solutions, the valve seat is welded to the housing to connect the solenoid valve and the bypass pipe. Because of limitations imposed by the solenoid valve model, the valve seat cannot be arbitrarily reduced in size, causing this component to occupy space within the housing frame. This design is particularly problematic for compressors with small housing diameters, making it less compact and hindering frame design and assembly within the housing. Consequently, this structure fails to meet the design and assembly requirements of the housing.

[0096] Based on the above problems, this embodiment provides a solution to set the valve seat and the frame 1 as an integrated structure, so that the valve seat no longer affects the assembly of the frame 1 in the housing 5, and can reduce the number of parts in the whole machine and reduce the cost of the whole machine.

[0097] Specifically, an annular structure (seat portion 16) is added between two bosses (boss portion 15) on the frame 1 to connect the two bosses. The annular structure has a mounting cavity 10 to function as a valve seat. Simultaneously, a bypass inlet 11 is provided on the annular structure, which connects to a bypass pipe 3. Bypass gas reaches the mounting cavity 10 through the bypass pipe 3, and after being controlled by a solenoid valve, enters the low-pressure side of the compressor. This structure does not alter the design of the housing 5; the housing 5 needs to retain the hole previously used to mate with the valve seat (second mounting hole 52), through which the solenoid valve connects to the frame 1. However, this hole no longer mates with the valve seat, so the accuracy requirements for its diameter and position can be reduced. Sealing between the hole and the frame 1 can be achieved by welding or by adding sealing elements (such as O-rings).

[0098] The compressor is a variable displacement compressor. The frame 1 is directly connected to the solenoid valve, and the frame 1 has features (such as internal threads) for positioning and fastening the solenoid valve. For example, the frame 1 and the solenoid valve can be connected via thread 6; of course, other sealing connection methods can also be used. The housing 5 is welded to the frame 1 for sealing; however, other sealing methods such as seals can also be used for sealing connection between the housing 5 and the frame 1.

[0099] There may be sealing elements between the frame 1 and the solenoid valve, none of which have the function of a valve seat.

[0100] Glossary:

[0101] Variable capacity scroll compressor: A scroll compressor that can change its compression volume according to system requirements;

[0102] Frame 1: A component in a scroll compressor used to support and fix the scroll and crankshaft;

[0103] Bypass pipe 3: Enables the variable capacity scroll compressor to switch between full load and half load by controlling the gas in the bypass scroll chamber. Bypass pipe 3 is the channel for leading the bypass gas to the solenoid valve.

[0104] The integrated solution provided in this embodiment eliminates the need for a valve seat, resulting in a more compact compressor structure, reduced costs, and increased assembly efficiency. This embodiment also eliminates the need to consider the clearance between the valve seat and frame 1, facilitating the development of compressors with smaller casing diameters in the future.

[0105] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0106] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] 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 compressor, characterized in that, include: A frame, the frame including a mounting cavity, a bypass inlet communicating with the mounting cavity, a first mounting hole communicating with the mounting cavity, and a bypass outlet communicating with the mounting cavity; Compression assembly, the compression assembly including a compression chamber; A bypass pipe, one end of which is connected to the compression chamber and the other end of which is connected to the bypass inlet, is used to transport gas in the compression chamber to the mounting chamber through the bypass inlet; A control valve, at least a portion of which is mounted into the mounting cavity via the first mounting hole, the control valve being used to control the on / off connection between the bypass inlet and the bypass outlet.

2. The compressor according to claim 1, characterized in that, The compression component includes: A moving scroll plate is disposed on one side of the frame; A stationary scroll plate is disposed on the side of the moving scroll plate away from the frame, and together with the moving scroll plate, they form the compression chamber.

3. The compressor according to claim 2, characterized in that, The rack includes: The frame section has a shaft hole for the crankshaft to pass through; Multiple bosses are spaced apart on the frame part along the circumference of the shaft hole, and the bosses are provided with a fixing structure for fixing the stationary vortex disk. A base portion is disposed between two adjacent boss portions, a mounting cavity is disposed within the base portion, and a bypass inlet, a first mounting hole, and a bypass outlet are disposed on the base portion.

4. The compressor according to claim 3, characterized in that, Along the circumferential direction of the shaft hole, the seat portion is connected to two adjacent boss portions; The frame, the plurality of protrusions, and the base are an integral structure.

5. The compressor according to claim 3, characterized in that, Along the radial direction of the shaft hole, a gap is provided between a portion of the base portion and the frame portion.

6. The compressor according to claim 3, characterized in that, Also includes: The housing contains the frame and the compression assembly. The housing has a second mounting hole, and the first mounting hole corresponds to the second mounting hole. At least a portion of the control valve passes through the second mounting hole and the first mounting hole and is installed in the mounting cavity.

7. The compressor according to claim 6, characterized in that, The control valve is welded to the housing; and / or The control valve includes a valve seat, a valve core, and a valve port seat connected to each other. A portion of the valve seat is installed in the second mounting hole. The valve seat abuts against the frame and extends into the first mounting hole. One end of the valve seat extending into the frame is provided with a receiving cavity for accommodating the valve core. The receiving cavity communicates with the mounting cavity. The valve port seat is located at the bypass outlet and is provided with a valve port. The receiving cavity communicates with the valve port. The valve core can move towards or away from the valve port to close or open the valve port, thereby controlling the connection or disconnection between the bypass inlet and the bypass outlet.

8. The compressor according to claim 7, characterized in that, The valve seat and the seat body are an integral structure; and / or A first seal is provided between the valve seat and the side wall of the bypass outlet; and / or A second sealing element is provided between the valve core and the inner wall of the receiving cavity; and / or A third sealing element is provided between the valve seat and the frame.

9. The compressor according to any one of claims 1 to 6, characterized in that, The control valve is partially or wholly detachably mounted on the frame; and / or The control valve is a solenoid valve.

10. The compressor according to any one of claims 1 to 7, characterized in that, The bypass inlet is arranged along the axial direction of the compressor, and / or The first mounting hole and the bypass outlet are arranged radially along the compressor; and / or The diameter of the first mounting hole is larger than the diameter of the bypass outlet; and / or The diameter of the first mounting hole is smaller than the diameter of the mounting cavity.

11. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 10.

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