Compressor and refrigeration apparatus

Abstract

The embodiment of the utility model provides a kind of compressor and refrigeration equipment, wherein, compressor includes: compressor main body;Liquid accumulator shell, be located in the side of compressor main body, liquid accumulator shell is equipped with multiple connecting ports in one end of first direction;Multiple suction pipes, connect with liquid accumulator shell by connecting port, and the one end of each suction pipe is located in the inside of liquid accumulator shell, and the other end is connected to compressor main body;Wherein, connecting port includes first port, second port and third port, on the law plane of first direction, the center of first port and the center of compressor main body are first distance, the center of second port and the center of compressor main body are second distance, the center of third port and the center of compressor main body are third distance, first distance is greater than second distance, and first distance is greater than third distance.The technical scheme of the utility model, optimize refrigerant flow uniformity, reduce flow resistance and pressure drop, improve suction efficiency, realize compact suction pipe layout.

Description

Technical Field

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

[0002] Currently, the refrigeration compressor, as the core component of refrigeration equipment, directly affects the efficiency, stability, and service life of the entire refrigeration system. In traditional compressor designs, the structural layout of the receiver housing and suction pipe is typically simple, with the suction pipe often connected as a single line, and the spatial layout of the suction inlets is mostly linear or simply arranged, making it difficult to meet the design requirements of high-performance, multi-inlet compressors. In related technologies, the arrangement of multiple suction inlets on the same plane or straight line leads to pipe intersections, low space utilization, increased manufacturing and assembly difficulties, and negatively impacts the overall performance and reliability of the compressor. Utility Model Content

[0003] The present invention aims to at least solve the technical problem of high assembly difficulty in the prior art or related technologies.

[0004] In view of this, an embodiment of the present invention provides a compressor.

[0005] Another embodiment of this utility model provides a refrigeration device.

[0006] To achieve the above objectives, an embodiment of this utility model provides a compressor, comprising: a compressor body; a liquid receiver housing disposed on one side of the compressor body, the liquid receiver housing having a plurality of connection ports at one end in a first direction; and a plurality of suction pipes connected to the liquid receiver housing through the connection ports, wherein one end of each suction pipe is located inside the liquid receiver housing and the other end is connected to the compressor body; wherein the connection ports include a first port, a second port, and a third port, and on the normal plane in the first direction, the center of the first port is at a first distance from the center of the compressor body, the center of the second port is at a second distance from the center of the compressor body, and the center of the third port is at a third distance from the center of the compressor body, the first distance being greater than the second distance and the third distance being greater than the third distance.

[0007] The compressor proposed in this utility model optimizes the spatial layout and connection relationship of multiple suction pipes between the liquid receiver shell and the compressor body, thereby achieving scientific optimization of the refrigerant flow path and compact and reasonable pipeline structure. This optimizes the uniformity of refrigerant flow, reduces flow resistance and pressure drop, improves suction efficiency, achieves a compact suction pipe layout, maximizes space utilization, avoids mutual interference between pipelines, improves structural stability, enhances structural stability and manufacturing and assembly precision, and ensures good connection and positioning between the pipeline and the compressor body through reasonable connection port position and pipeline length adjustment.

[0008] This solution clarifies the spatial distance between the receiver housing connection ports (i.e., the first, second, and third ports) and the center of the compressor body, and rationally arranges multiple suction pipes. The main suction pipe corresponds to the first port and maintains a large distance from the compressor body, improving connection flexibility and flow optimization space. The second and third suction pipes are arranged compactly to form a stable triangular structure, ensuring pipeline stability and space utilization, optimizing the refrigerant flow path, and improving suction uniformity and overall compressor performance.

[0009] In some technical solutions, optionally, the multiple suction tubes include a first suction tube, a second suction tube, and a third suction tube. The first suction tube is connected to the reservoir housing through a first port, the second suction tube is connected to the reservoir housing through a second port, and the third suction tube is connected to the reservoir housing through a third port.

[0010] In this design, the first, second, and third suction tubes are connected to the reservoir housing via the first, second, and third ports, respectively. This ensures a sealed connection and mechanical fixation for each suction tube, guaranteeing the reliability and safety of the system. It also achieves a reasonable spatial layout of the pipelines, avoids pipeline crossings and interference, meets the installation requirements for vertical alignment, supports different bending forms for different suction tubes, optimizes the flow path, and improves suction efficiency.

[0011] In some technical solutions, optionally, the first suction tube includes a first straight section and a first bent section, the second suction tube includes a second straight section, a first bent section and a second bent section, and the third suction tube includes a third straight section, a second bent section and a third bent section; wherein, the first straight section, the second straight section and the third straight section extend along a first direction, and the opening direction of the end of the first bent section away from the first straight section, the opening direction of the end of the second bent section away from the second straight section and the opening direction of the end of the third bent section away from the third straight section are parallel to each other.

[0012] In this technical solution, the straight sections of the three suction pipes extend uniformly along the first direction, ensuring spatial consistency and assembly positioning stability at the beginning. The first suction pipe adopts a simple two-section structure, forming an L-shaped three-dimensional bend, achieving horizontal offset after vertical suction. The second and third suction pipes achieve spatial offset and outlet direction adjustment through S-shaped compound bends of two bend sections, resolving spatial conflicts and meeting the design requirement that the outlet openings of the three pipes are parallel and vertically aligned.

[0013] In some technical solutions, optionally, the center of the opening at the end of the first bend pipe segment away from the first straight pipe segment, the center of the opening at the end of the second bend pipe segment away from the second straight pipe segment, and the center of the opening at the end of the third bend pipe segment away from the third straight pipe segment are in the same plane, and the first direction extends along the plane.

[0014] In this design, the opening centers of the first, second, and third bend sections, located at the ends furthest from the straight section, are on the same plane. This unifies the spatial positions of the three suction pipe outlets, serving as an installation positioning benchmark. This ensures the vertical alignment of the three pipe outlets, simplifies the suction inlet design, and improves assembly accuracy and sealing performance. Extending along this plane in the first direction maintains the linear arrangement of the pipe outlets, ensuring the stability of the pipe spatial layout. This facilitates the connection between the pipes and the compressor's main suction inlet, improving structural compactness and manufacturing controllability. The unified position of the three pipe outlets enhances mechanical rigidity and stability, facilitating support and counterweight design, improving overall vibration performance and durability, and reducing assembly errors. The unified direction and position of the outlet openings ensure smooth fluid flow, uniform airflow distribution, reduced suction pressure drop, improved compressor performance, and reduced noise and vibration.

[0015] In some technical solutions, optionally, in the first direction, the minimum distance between the first bend section and the reservoir housing is less than the minimum distance between the second bend section and the reservoir housing, and the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing; or in the first direction, the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the first bend section and the reservoir housing, and the minimum distance between the first bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing; or in the first direction, the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing, and the minimum distance between the third bend section and the reservoir housing is less than the minimum distance between the first bend section and the reservoir housing.

[0016] In this technical solution, by providing three different arrangement schemes for the minimum distance between the bend section in the first direction and the liquid receiver housing, reasonable avoidance between the pipeline and the liquid receiver housing is achieved, avoiding mechanical interference and vibration transmission. At the same time, it ensures flexible use of pipeline space, meets the installation requirements of different liquid receiver shapes and sizes, improves the mechanical stability and fluid flow performance of the pipeline structure, ensures the compactness and functionality of the overall suction pipeline system, and improves the overall performance and reliability of the compressor.

[0017] In some technical solutions, optionally, the bending radius of the centerline of the first bend is greater than the outer diameter of the first suction pipe; the bending radius of the centerline of the first bend is greater than the outer diameter of the second suction pipe; the bending radius of the centerline of the second bend is greater than the outer diameter of the second suction pipe; the bending radius of the centerline of the second bend is greater than the outer diameter of the third suction pipe; and the bending radius of the centerline of the third bend is greater than the outer diameter of the third suction pipe.

[0018] In this technical solution, by strictly controlling the bending radius of the centerline of each bend to be greater than the corresponding outer diameter of the pipe, the mechanical strength and durability are improved, pipe damage is prevented, fluid flow resistance is reduced, air intake efficiency is improved, the stability and controllability of the manufacturing process are enhanced, assembly quality is guaranteed, pipeline vibration response is optimized, and the overall reliability of the machine is improved.

[0019] In some technical solutions, optionally, the inclination angle of the centerline of the first bend is in the range of 5° to 75°; the inclination angle of the centerline of the second bend is in the range of 5° to 75°.

[0020] In this technical solution, by limiting the centerline inclination angle of the first and second bends to 5°~75°, sufficient spatial flexibility is provided for the second and third suction pipes, enabling them to reasonably bypass obstacles within a limited space and achieve vertical alignment and parallel opening direction with the outlet end of the first suction pipe. This solution takes into account the requirements of spatial layout, fluid flow performance and manufacturing assembly, and improves the overall performance and reliability of the compressor suction pipeline system.

[0021] In some technical solutions, optionally, the inclination angle of the centerline of the first bend is 85°~95°; the inclination angle of the centerline of the second bend is 85°~95°; and the inclination angle of the centerline of the third bend is 85°~95°.

[0022] In this design, the centerline inclination angle of the bends in the three suction pipes is 85°~95°, which realizes the basic vertical direction characteristics of the pipe outlet end, meets the vertical alignment requirements of the compressor suction inlet, and also takes into account the rationality of spatial layout, the optimization of flow performance, and the convenience of manufacturing and assembly.

[0023] In some technical solutions, optionally, on the normal plane of the first direction, the center of the first opening, the center of the second opening, and the center of the third opening are the three vertices of the same acute triangle.

[0024] In this scheme, by arranging the centers of the first port, the second port, and the third port as the three vertices of the same acute triangle on the normal plane of the first direction, the spatial layout of the liquid receiver shell connection port is optimized. At the same time, the compactness of the pipeline structure is improved, making the refrigerant flow path more uniform and stable, thereby improving the assembly convenience and sealing reliability of the overall structure of the refrigeration equipment.

[0025] Another embodiment of this utility model provides a refrigeration device, including any of the compressors described above.

[0026] The refrigeration equipment in this solution includes any of the compressors mentioned above, wherein the refrigeration equipment includes, but is not limited to, various refrigeration equipment such as household air conditioners, commercial refrigerators, and heat pump systems.

[0027] It should be added that, since the refrigeration equipment in this solution includes the aforementioned compressor, it has the beneficial effects of any of the aforementioned compressors, which will not be elaborated further here.

[0028] 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

[0029] Figure 1 A schematic diagram of the structure of a compressor according to an embodiment of the present invention is shown;

[0030] Figure 2 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0031] Figure 3 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0033] Figure 5 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0034] Figure 6 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0035] Figure 7 A schematic diagram of the structure of a liquid reservoir housing according to an embodiment of the present invention is shown;

[0036] Figure 8 A schematic diagram of the structure of a third inhalation tube according to an embodiment of the present invention is shown;

[0037] Figure 9 A schematic diagram of the structure of a third inhalation tube according to an embodiment of the present invention is shown.

[0038] Wherein, 1: compressor; 11: compressor body; 12: liquid receiver housing; 121: connection port; 1211: first port; 1212: second port; 1213: third port; 13: suction pipe; 131: first suction pipe; 1311: first straight pipe section; 1312: first bend pipe section; 132: second suction pipe; 1321: second straight pipe section; 1322: second bend pipe section; 1323: first bend section; 133: third suction pipe; 1331: third straight pipe section; 1332: second bend section; 1333: third bend pipe section; d1: first distance; d2: second distance; d3: third distance. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this 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.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0041] In related technologies, for three-cylinder or multi-cylinder compressors, when the liquid receiver has three suction pipes, the layout of the pipeline is crucial, as it relates to whether the structure is compact and whether the pipeline is more manufacturable.

[0042] The following reference Figures 1 to 9 Some embodiments of the present invention are described below.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a compressor 1. By optimizing the spatial layout and connection relationship of multiple suction pipes 13 between the liquid receiver housing 12 and the compressor body 11, the refrigerant flow path is scientifically optimized and the pipeline structure is compact and reasonable. This optimizes the uniformity of refrigerant flow, reduces flow resistance and pressure drop, improves suction efficiency, achieves a compact suction pipe 13 layout, maximizes space utilization, avoids mutual interference between pipelines, improves structural stability, enhances structural stability and manufacturing and assembly precision, and ensures good connection and positioning between the pipeline and the compressor body 11 through reasonable adjustment of the connection port 121 position and pipeline length.

[0044] Specifically, the compressor 1 includes a compressor body 11 and a liquid reservoir housing 12 arranged adjacent to each other and connected by a suction pipe 13. The liquid reservoir housing 12 is provided with a plurality of connection ports 121 and a plurality of corresponding suction pipes 13.

[0045] The compressor body 11 serves as the core support of the entire compressor 1. It houses the compression mechanism and motor, providing power and space for refrigerant compression. The center of the compressor body serves as the reference point for the entire system, determining the layout and spatial relationship of the receiver housing 12 and the suction pipe 13, and is a crucial point for positioning the connecting lines. The center of the compressor body 11, acting as the reference for the center of the receiver housing 12, ensures precise alignment between the suction pipe 13 and the suction port of the compression mechanism, guaranteeing the shortest gas flow path and minimal flow resistance.

[0046] The receiver housing 12 serves as a refrigerant storage device and a means of separating liquid and gaseous refrigerant, while also acting as a support base for the suction pipe 13. One end of the housing has multiple connection ports 121, which act as interfaces between the suction pipe 13 and the receiver, facilitating the introduction of internal refrigerant and connection to the suction line. Along a first direction, one end of the receiver housing 12 has multiple connection ports 121, namely, a first port 1211, a second port 1212, and a third port 1213. The center of the receiver housing 12 serves as one endpoint of a connecting line, connecting to the center of the compressor body 11 to form a reference baseline for spatial planning.

[0047] The receiver housing 12 is located on one side of the compressor body 11, achieving a compact spatial layout. The connection port 121 ensures a sealed connection between the suction pipe 13 and the receiver housing 12 and smooth flow of refrigerant.

[0048] The suction pipe 13 serves as a channel for refrigerant gas to flow from the receiver to the compression mechanism of the compressor body 11. One end of each suction pipe 13 is located inside the receiver housing 12, enabling effective intake of refrigerant gas; the other end connects to the corresponding intake port of the compressor body 11, ensuring the continuity and sealing of the gas flow path. Through reasonable pipe design, the bending radius is reduced, fluid resistance is lowered, and the performance of the compressor 1 is improved. It can be understood that the suction pipe 13 communicates with the inside of the receiver through the connection port 121 of the receiver housing 12, and the other end connects to the corresponding intake port of the compressor body 11, ensuring that the gas flows to the compression mechanism.

[0049] The connection port 121 serves as the structural interface between the reservoir housing 12 and the suction pipe 13, ensuring sealing and mechanical strength. The layout of the three connection ports 121 determines the starting position and relative spatial relationship of the three suction pipes 13, directly affecting the overall pipeline layout and the alignment effect of the pipeline outlet.

[0050] Specifically, on the normal plane of the first direction, the center of the first port 1211 is at a first distance d1 from the center of the compressor body 11, the center of the second port 1212 is at a second distance d2 from the center of the compressor body 11, and the center of the third port 1213 is at a third distance d3 from the center of the compressor body 11. This defines the spatial positional relationship of the three connection ports 121 relative to the center of the compressor body 11, reflecting the degree of offset of different suction pipes 13 relative to the compressor body 11.

[0051] It is important to emphasize that by limiting the first distance d1 to be greater than the second distance d2 and the first distance d1 to be greater than the third distance d3, it is clear that the distance of the first port 1211 relative to the center of the compressor body 11 is greater than that of the second port 1212 and the third port 1213, forming a spatial hierarchical distribution. The center of the first port 1211 is the farthest from the center of the compressor body 11, indicating that the first suction pipe 131 is offset the farthest in spatial layout. It is usually used as the main suction pipe 13, which helps to optimize airflow distribution and avoid pipe interference. The second port 1212 and the third port 1213 are relatively close, ensuring that the second suction pipe and the third suction pipe 133 are arranged compactly, achieving a reasonable triangular arrangement.

[0052] By increasing the distance of the first inlet 1211, an L-shaped three-dimensional bending structure is achieved for the main suction pipe 13, facilitating connection with suction inlets of different heights on the casing and improving connection flexibility. The second inlet 1212 and the third inlet 1213 are closer together, and combined with the S-shaped composite bending structure, they ensure space avoidance and uniform flow in the pipeline, preventing pipeline congestion and vibration transmission. The above distance design, combined with a triangular layout, balances compactness and uniform fluid distribution, optimizing the overall refrigerant flow path.

[0053] In summary, this solution clarifies the spatial distance relationship between the connection ports 121 of the receiver housing 12 (i.e., the first port 1211, the second port 1212, and the third port 1213) and the center of the compressor body 11, and rationally arranges multiple suction pipes 13. The main suction pipe 13 corresponds to the first port 1211 and maintains a large distance from the compressor body 11, improving connection flexibility and flow optimization space. The second and third suction pipes 133 are compactly arranged to form a stable triangular structure, ensuring pipeline stability and space utilization, optimizing the refrigerant flow path, and improving suction uniformity and the overall performance of the compressor 1.

[0054] In some embodiments, the plurality of suction pipes 13 are optionally clearly divided into a first suction pipe 131, a second suction pipe 132, and a third suction pipe 133. Each suction pipe 13 is connected to the liquid receiver housing 12 through a dedicated connection port 121, which ensures the sealing between the pipe and the internal space of the liquid receiver and avoids refrigerant leakage. The connection port 121 serves as a structural interface to support the mechanical load of the suction pipe 13 and ensure the stability of the suction pipe 13 under operating vibration and thermal expansion conditions. This one-pipe-one-port correspondence avoids pipe port confusion and assembly errors, and improves assembly efficiency and quality.

[0055] Each suction pipe 13 corresponds to a fixed connection port 121, ensuring that refrigerant gas enters the compressor body 11 from inside the receiver along a predetermined path. By rationally arranging the positions of the first port 1211, the second port 1212, and the third port 1213, with the first port 1211 being farther from the center of the compressor body 11 than the second and third ports 1212 and 1213, a spatially layered distribution is formed. This allows the suction pipes 13 to adopt different bending forms, such as L-shaped three-dimensional bends and S-shaped compound bends, optimizing the flow path, reducing local pressure loss, and improving suction efficiency. Furthermore, the matching of the suction pipe 13 with the connection port 121 ensures a smooth pipeline transition, reducing flow eddies and noise.

[0056] It is understandable that by connecting each suction pipe 13 to the corresponding connection port 121, and combining the special arrangement of the connection port 121 on the first direction normal plane, the vertical alignment of the outlet ends of the three suction pipes 13 is achieved, thereby reducing the layout conflict of the three pipes in the limited space, avoiding pipe cross-interference, and facilitating compact installation.

[0057] Optionally, the clear correspondence between the connection port 121 and the suction pipe 13 simplifies the assembly process and facilitates the use of segmented brazing technology. First, the first suction pipe 131 is connected to the reservoir housing 12 through the first port 1211 to ensure the positioning and welding accuracy of the vertical section. Then, the second suction pipe 132 and the third suction pipe 133 are assembled separately and connected through the second port 1212 and the third port 1213 to achieve the positioning welding of the inclined section.

[0058] This ensures the stability of the pipeline's geometric dimensions and the tolerance of the pipe spacing (±1mm), thereby improving the overall assembly quality.

[0059] In summary, the structural design that connects the first suction tube 131, the second suction tube 132, and the third suction tube 133 to the reservoir housing 12 via the first port 1211, the second port 1212, and the third port 1213 respectively ensures the sealed connection and mechanical fixation of each suction tube 13, guarantees the reliability and safety of the system, achieves a reasonable spatial layout of the pipeline, avoids pipeline crossing and interference, meets the installation requirements of vertical alignment, supports different bending forms for different suction tubes 13, optimizes the flow path, and improves suction efficiency.

[0060] In some embodiments, optionally, such as Figure 4As shown, the first suction pipe 131 consists of two parts: a first straight pipe section 1311 and a first bent pipe section 1312; the second suction pipe 132 consists of three parts: a second straight pipe section 1321, a first bent pipe section 1323, and a second bent pipe section 1322; and the third suction pipe 133 consists of three parts: a third straight pipe section 1331, a second bent pipe section 1332, and a third bent pipe section 1333. The straight pipe sections of the three suction pipes 13, namely the first straight pipe section 1311, the second straight pipe section 1321, and the third straight pipe section 1331, all extend along a first direction. The opening directions of the ends of the first bent pipe section 1312, the second bent pipe section 1322, and the third bent pipe section 1333 away from the straight pipe sections are parallel to each other.

[0061] The straight sections of the three suction pipes 13 are extended in the same direction, i.e., the first direction, providing a unified directional reference for the overall spatial layout of the pipeline. This allows the suction pipes 13 to extend a certain length of straight section from the connection port 121 of the reservoir housing 12, facilitating positioning and welding, and reducing bending stress and flow disturbance in the initial section of the pipeline. The unified extension direction simplifies the pipeline design and facilitates subsequent bend design and assembly. The straight pipe sections provide rigid support, ensuring the stability and positioning accuracy of the overall pipeline structure. The length of the straight pipe sections is adjustable, for example, in the range of 30mm to 140mm, to adapt to space constraints and flow requirements.

[0062] The first suction pipe 131 consists of a straight pipe section and a single bend section, simplifying the pipe structure and reducing manufacturing complexity. The bend section changes the airflow direction, achieving a horizontal offset from the vertically extending straight pipe section to meet the spatial docking requirements with the suction inlet of the compressor body 11. The "L-shaped three-dimensional bend" structure ensures that the inlet end of the first suction pipe 131 is perpendicular to the liquid receiver connection port 121, and the outlet end is aligned with the suction inlet of the compressor 1. The opening direction of the bend section away from the straight pipe section is parallel to the opening direction of the corresponding bend sections of the second suction pipe 132 and the third suction pipe 133, achieving consistent direction for the three pipes at the outlet end, facilitating assembly and ensuring uniform airflow.

[0063] Both the second suction pipe 132 and the third suction pipe 133 consist of a straight pipe section and two bends, namely, a first bend 1323 and a second bend 1322, and a second bend 1332 and a third bend 1333. Through the combined bending of the two bends, the spatial offset and angle adjustment of the second suction pipe 132 and the third suction pipe 133 are achieved. The first bend 1323 and the second bend 1332 are used to achieve the tilt angle relative to the first suction pipe 131, resolving spatial avoidance and pipeline layout conflicts. The second bend 1322 and the third bend 1333 achieve the final pipe opening direction adjustment, typically by connecting perpendicularly to the compressor body 11, ensuring that the pipe outlet end remains parallel and vertically aligned with the other two suction pipes 13.

[0064] Optionally, the S-shaped composite bending structure effectively solves the spatial conflict between the second suction pipe 132 and the third suction pipe 133 and the first suction pipe 131. The design of the two bending pipe sections ensures the consistency of the direction of the pipe outlet end, ensuring the smooth flow of fluid to the suction port of the compressor 1.

[0065] Furthermore, by restricting the opening directions of the ends of the first bend section 1312, the second bend section 1322, and the third bend section 1333 away from the straight section to be parallel to each other, the opening directions of the outlet ends of the three suction pipes 13 are ensured to be consistent. This facilitates simultaneous vertical alignment and connection to the three suction ports of the compressor body 11. The parallel opening directions make the installation and sealing connection of the pipe outlet end easier, reducing assembly errors. The parallel opening directions are conducive to the uniform entry of airflow into the compression mechanism, avoiding airflow deviation and local eddies, and improving the suction efficiency and stability of the compressor 1.

[0066] It is understandable that the outlet ends of the three suction pipes 13 are arranged in the same plane or the same straight line to meet the spatial positioning requirements of the compressor 1 for the suction port, ensure the overall coordination of the pipeline layout, and improve the mechanical stability and vibration performance of the whole machine.

[0067] In summary, this solution ensures spatial consistency and assembly positioning stability in the initial section by extending the straight sections of the three suction pipes 13 uniformly along the first direction. The first suction pipe 131 adopts a simple two-section structure, forming an L-shaped three-dimensional bend to achieve horizontal offset after vertical suction. The second suction pipe 132 and the third suction pipe 133 achieve spatial offset and outlet direction adjustment through S-shaped compound bends of two bend sections, resolving spatial conflicts and meeting the design requirements of parallel and vertically aligned outlet openings of the three pipes.

[0068] It should be added that the opening directions of the curved sections of the three suction pipes 13 away from the straight sections are parallel to each other, so that the three pipes at the outlet end can be neatly arranged and are easier to connect to the suction port of the compressor body 11.

[0069] In some embodiments, optionally, such as Figure 4 As shown, the first bend pipe section 1312, the second bend pipe section 1322 and the third bend pipe section 1333 are located at the opening center of one end away from the corresponding straight pipe section, and the three are on the same plane, which extends along the first direction.

[0070] The centers of the openings of the three suction pipes 13 bends are on the same plane, ensuring that the outlet ends of the three suction pipes 13, i.e., the opening ends of the bends that are far from the straight pipe sections, are on the same plane in space. This provides a spatial basis for the precise alignment and installation of the pipe outlet ends. The same plane serves as a positioning reference surface for the pipe outlet ends, simplifying the design and manufacturing of the suction inlet of the compressor body 11 and ensuring a good fit between the suction inlet and the outlet of the suction pipes 13. It is understandable that the same plane is conducive to the unified layout of the pipelines and avoids increased installation difficulty or poor sealing caused by the opening ends not being on the same plane.

[0071] The vertical alignment of the gas inlet at the outlet end of the three suction pipes 13 ensures that the compressor 1 meets the strict spatial requirements of the suction path, improves assembly efficiency and sealing performance, reduces assembly errors caused by spatial misalignment, and helps to achieve precise control of the pipe spacing tolerance (±1mm) at the outlet end of the suction pipes 13.

[0072] The plane containing the center of the bend in the three suction pipes 13 is consistent with the first direction, that is, the plane extends along the first direction, maintaining the continuity of the pipeline route and the stability of the overall layout, which is conducive to the uniform extension of the pipeline along the first direction, facilitating the connection between the pipeline and the suction port of the compressor body 11, ensuring that the size and position of the pipeline in the first direction are controllable, and facilitating the size positioning and tolerance control in design and manufacturing.

[0073] The pipeline outlet exhibits a good linear arrangement, which facilitates the vertical arrangement of the compressor body 11 suction inlet, simplifies the structure, and makes the pipeline layout compact and regular, taking into account both space utilization and fluid flow performance.

[0074] The opening centers of the bends away from the straight sections are on the same plane, which means that the outlets of the three pipes are not only parallel in direction, but also on the same geometric plane, ensuring the rigidity and stability of the mechanical connection. The aforementioned plane serves as an installation reference plane, which is beneficial for pipe assembly and positioning, and improves the rigidity and vibration resistance of the overall structure.

[0075] It should be added that the outlet ends of the three suction pipes 13 are on the same plane and the opening directions are parallel, which ensures that the flow path of gas into the compression mechanism is uniform and even, reduces the uneven airflow, eddy current generation and local pressure loss caused by misalignment of the outlet ends, and improves the suction efficiency of compressor 1.

[0076] In summary, the opening centers of the first bend section 1312, the second bend section 1322, and the third bend section 1333, located away from the straight pipe section, are on the same plane. This unifies the spatial position of the outlet ends of the three suction pipes 13, serving as an installation positioning benchmark. This ensures the vertical alignment of the three pipe outlet ends, simplifies the suction inlet design, and improves assembly accuracy and sealing performance. Extending along this plane in the first direction maintains the linear arrangement of the pipe outlet ends, ensuring the stability of the pipe spatial layout. This facilitates the connection between the pipes and the suction inlet of the compressor body 11, improving structural compactness and manufacturing controllability. The unified position of the three pipe outlet ends enhances mechanical rigidity and stability, facilitating support and counterweight design, improving overall vibration performance and durability, and reducing assembly errors. The unified direction and position of the outlet openings ensure smooth fluid flow, uniform airflow distribution, reduced suction pressure drop, improved compressor performance, and reduced noise and vibration.

[0077] This scheme is parallel to the opening direction of the first bend section 1312, the second bend section 1322, and the third bend section 1333 at the end away from the straight section as defined above. This not only ensures that the opening direction of the outlet end is consistent, but also ensures that the spatial arrangement of the opening position is consistent, thus doubly guaranteeing the high-precision alignment of the outlet ends of the three suction pipes 13.

[0078] The aforementioned plane can be regarded as the mounting plane of the suction port of the compressor 1 housing, and the outlet end of the three suction pipes 13 is the sealing surface connected to the suction port of the compressor 1.

[0079] In some embodiments, optionally, the minimum distance between the first bend section 1312 and the reservoir housing 12 is the smallest, the minimum distance between the second bend section 1322 and the reservoir housing 12 is the second smallest, greater than the minimum distance between the first bend section 1312 and the reservoir housing 12, but less than the minimum distance between the third bend section 1333 and the reservoir housing 12, and the minimum distance between the third bend section 1333 and the reservoir housing 12 is the largest. All distances are measured along the first direction.

[0080] The staggered layout of the pipeline reflects the hierarchical spatial distribution of the three suction pipe sections 13. Specifically, the first bend section 1312 is closest to the reservoir housing 12, the second bend section 1322 is in the center, and the third bend section 1333 is furthest from the reservoir housing 12. This layered, staggered arrangement avoids spatial interference or overlap between the three bend sections, achieving a reasonable dispersion of the pipeline. This helps shorten the length of each pipeline, reduce the bending radius, and improve fluid flow efficiency. The staggered arrangement also provides sufficient space for bending and welding in each pipe section, improving the feasibility and reliability of manufacturing and assembly.

[0081] The different distances between the different bends in the pipe section and the reservoir housing 12 ensure that the three pipes are staggered in the first direction, thereby avoiding physical collisions between the pipes and between the pipes and the housing. This effectively avoids mutual interference between the pipes during bending and assembly, reduces assembly difficulty and rework rate, lowers the risk of pipe deformation caused by collisions, and improves the structural stability and service life of the pipes.

[0082] By adjusting the distance between the pipe and the shell, a more reasonable flow path is made when the fluid enters the pipe, reducing flow resistance. The first bend section 1312 is closest to the shell and usually corresponds to the suction pipe 13 with a large flow rate or high flow velocity, reducing the path length and pressure drop caused by the bend. The third bend section 1333 is farthest from the shell, giving it enough space to make an "S-shaped compound bend", ensuring smooth flow and avoiding flow separation and pressure loss caused by sharp bends.

[0083] The increasing distance between different pipe sections and the shell provides space for segmented brazing and assembly positioning. The first bend section 1312 has the smallest distance, which facilitates initial fixing and welding and provides an assembly reference. The second bend section 1322 has a moderate distance, which facilitates subsequent assembly and adjustment. The third bend section 1333 has the largest distance, which ensures the assembly space for its complex bending structure and avoids assembly interference. The overall layered distance design improves assembly efficiency and reduces assembly stress while ensuring the control of pipe spacing tolerance.

[0084] It should be added that by increasing the distance reasonably, the pipeline gradually moves away from the shell along the first direction, avoiding unnecessary mechanical interference between the pipeline and the shell, while maintaining a compact structure, ensuring the rigidity of the mechanical connection between the liquid reservoir and the suction pipe 13, avoiding vibration transmission and stress concentration caused by the pipeline being too close to the shell, making the pipeline layout more reasonable and compact, saving installation space, and facilitating the miniaturization design of the whole machine.

[0085] In summary, this feature, through the increasing minimum distance between the first bend section 1312, the second bend section 1322, and the third bend section 1333 and the reservoir housing 12 in the first direction, forms a staggered and layered pipeline spatial layout. This avoids physical interference between the pipeline and the housing, as well as between pipelines, ensuring smooth assembly, optimizing the pipeline fluid path, reducing pressure drop and flow resistance, meeting the requirements of segmented brazing process and assembly tolerance, and improving manufacturing efficiency and assembly quality.

[0086] It should be added that, optionally, such as Figure 6 As shown, the distance relationship of the above scheme is as follows: the minimum distance between the first bend section 1312 and the reservoir housing 12 is less than the minimum distance between the second bend section 1322 and the reservoir housing 12, and the minimum distance between the third bend section 1333 and the reservoir housing 12.

[0087] In addition to the above, there can be other distance relationships, as follows:

[0088] For example Figure 7 As shown: the minimum distance between the second bend section 1322 and the reservoir housing 12 is less than the minimum distance between the first bend section 1312 and the reservoir housing 12, and less than the minimum distance between the third bend section 1333 and the reservoir housing 12.

[0089] Or, such as Figure 5 As shown, the minimum distance between the second bend section 1322 and the reservoir housing 12 is less than the minimum distance between the third bend section 1333 and the reservoir housing 12, which is less than the minimum distance between the first bend section 1312 and the reservoir housing 12.

[0090] By using three different relative distance arrangements, the relative positions of the three bends and the reservoir housing 12 can be flexibly adjusted according to the actual size, shape and internal structure of the reservoir housing 12, thereby optimizing the spatial distribution of the pipeline, avoiding interference between the bends and the reservoir housing 12, and improving the utilization rate of the pipeline assembly space.

[0091] By establishing reasonable distances, sufficient gaps are ensured between pipes and between pipes and the housing, reducing mechanical vibration transmission and stress concentration, meeting the adaptation requirements of different models and sizes of liquid reservoir housings 12, and enhancing the product's versatility and design flexibility.

[0092] The minimum distance between the bend section and the liquid receiver housing 12 is reasonably distributed to avoid friction, vibration or deformation caused by the pipeline being too close to the liquid receiver housing 12, reduce the risk of pipeline fatigue damage, improve service life, keep the fluid passage at the bend of the pipeline unobstructed, reduce flow turbulence and pressure drop, and improve refrigerant flow efficiency.

[0093] Through the above-mentioned various distance arrangements, the three bends can form different levels of spatial distribution in the first direction. Combined with the bending angle and length of the pipeline, a reasonable layout in three-dimensional space can be achieved. The pipeline layout is more flexible, adapting to the complex internal structure and installation requirements of the liquid receiver shell 12, improving the assembly accuracy between the pipeline and the liquid receiver and compressor body 11, and reducing on-site adjustments and rework.

[0094] In the first case, the first bend section 1312 is closest to the shell, which is suitable for designs with limited space or requiring tight fixation. Other bend sections are moved away in sequence to ensure avoidance and ventilation and heat dissipation.

[0095] In the second scenario, the second bend section 1322 is closest to the shell, which is suitable for situations where the second suction pipe 132 is fixed first or where space is limited. Other pipe sections should be reasonably staggered to avoid interference.

[0096] For the third scenario, the second bend section 1322 is closest to the shell, followed by the third bend section 1333, and the first bend section 1312 is the furthest away, which is suitable for special spatial layout requirements.

[0097] All three relationships ensure that the three bends are staggered in the first direction to avoid space congestion, and each bend maintains a certain minimum distance from the reservoir shell 12 to ensure the mechanical safety and fluid dynamic performance of the pipeline.

[0098] Overall, this solution provides three different arrangements of the minimum distance between the bend in the first direction and the reservoir housing 12, which allows for reasonable avoidance between the pipeline and the reservoir housing 12, avoids mechanical interference and vibration transmission, and also ensures flexible use of pipeline space to meet the installation requirements of different reservoir shapes and sizes, improves the mechanical stability and fluid flow performance of the pipeline structure, ensures the compactness and functionality of the overall suction pipeline system, and improves the overall performance and reliability of the compressor 1.

[0099] In some embodiments, the bending radius can be optionally defined as the radius of curvature of the pipe centerline when the pipe is bent. This solution stipulates that the bending radius of the centerline of all pipe bends is greater than the outer diameter of the corresponding suction pipe 13. In particular, the bending radius of the first bend 1323 of the second suction pipe 132 and the second bend 1332 of the third suction pipe 133 must also meet this condition. The larger the bending radius, the smaller the internal stress generated when the pipe is bent, and the more uniform the tensile and compressive deformation of the inner and outer walls of the pipe. A bending radius greater than the outer diameter of the pipe effectively avoids excessive deformation, wrinkling or cracking of the pipe wall, and improves the structural strength and durability of the pipe.

[0100] The first bend 1323 of the second suction pipe 132 adopts an "S-shaped composite bend", and similarly, the second bend 1332 of the third suction pipe 133 adopts an "S-shaped composite bend". The large bending radius helps to avoid stress concentration caused by complex bends.

[0101] Large bending radius bends help reduce fluid flow separation and eddy formation at bends, reduce local pressure loss, make fluid flow smoother, improve gas delivery efficiency of suction pipe 13, reduce energy consumption and noise, maintain the high efficiency of suction pipe 13 flow path, ensure the overall performance of compressor 1, and make the pipe structure more flexible due to larger bending radius, which can better absorb vibration and thermal expansion, reduce the risk of fatigue failure, enhance pipe stability, extend service life, and improve the reliability of the whole machine.

[0102] The bending radius is greater than the pipe diameter, which meets the technical requirements of conventional cold bending or hot bending processes, avoids pipe breakage or poor deformation, facilitates the positioning and joining of pipe sections in the brazing process, improves welding quality, ensures the stability of the bent pipe dimensions, and meets the assembly accuracy requirement of ±1mm pipe spacing tolerance.

[0103] It should be added that a uniform design standard of bending radius greater than outer diameter is adopted, which facilitates quality control and process parameter setting during production, reduces rework and scrap caused by bending radius that is too small, and improves production efficiency.

[0104] In summary, this solution improves mechanical strength and durability, prevents pipe damage, reduces fluid flow resistance, increases suction efficiency, enhances the stability and controllability of the manufacturing process, ensures assembly quality, optimizes pipeline vibration response, and improves overall machine reliability by strictly controlling the bending radius of the centerline of each bend to be greater than the corresponding outer diameter of the pipe.

[0105] Among them, such as Figure 8 and Figure 9 As shown, the bending radius of the second bend 1332 is 18mm, that is... Figure 8 R18 in the text corresponds to an outer diameter of 18mm for the third suction tube 133. Figure 8 and Figure 9 In the φ18 section, the bending radius of the second bend 1332 is equal to the outer diameter of the third suction pipe 133.

[0106] In some embodiments, the tilt angle refers to the angle at which the centerline of the first bend 1323 tilts from one end to the other. The tilt angle ranges from 5° to 75°, indicating that the bend can tilt within a wide range of angles to meet different spatial layout requirements.

[0107] The tilt angle of the first bend 1323 is adjustable, which allows the second suction pipe 132 to be spatially offset relative to the first suction pipe 131. By adjusting the tilt angle within the range of 5° to 75°, it can flexibly avoid the liquid reservoir housing 12, other pipelines or mechanical components, solve spatial conflicts and interference problems, and enable the second suction pipe 132 to be reasonably arranged in an S-shaped compound bend form, ensuring that the pipeline is compact and not crowded.

[0108] Similarly, as Figure 8 As shown, the inclination angle of the second bend 1332 is 30°. Of course, the inclination angle can be adjusted according to the actual situation to achieve the spatial offset of the third suction pipe 133 relative to the first suction pipe 131. By adjusting the inclination angle within the range of 5° to 75°, it is possible to flexibly avoid the liquid reservoir housing 12, other pipelines or mechanical components, solve the spatial conflict and interference problem, and enable the third suction pipe 133 to be reasonably arranged in the form of S-shaped compound bend, ensuring that the pipeline is compact and not crowded.

[0109] The tilt angle design ensures that the outlet ends of the curved sections of the second suction pipe 132 and the third suction pipe 133 are parallel to the opening direction of the outlet end of the first suction pipe 131 and are on the same plane. The outlet ends of the three suction pipes 13 are vertically aligned, which facilitates connection with the three suction ports of the compressor body 11, ensures that the airflow enters the compression mechanism evenly, and improves the suction performance.

[0110] It is understandable that limiting the tilt angle helps control airflow direction, reduce eddies and pressure losses caused by sharp turns, maintain smooth airflow, reduce intake pressure drop, improve compressor efficiency, reduce noise and vibration, and enhance overall operational stability. The tilt angle is controlled within the range of 5° to 75° to avoid excessively straight pipes due to too small an angle or sharp bends due to too large an angle. This ensures uniform stress distribution in the bend section, reduces the risk of fatigue failure, and improves pipe durability and service life.

[0111] Optionally, if the tilt angle is 5°, it is a slight tilt, which is suitable for spacious spaces or slightly off-center pipelines, resulting in a simple pipeline layout, low flow resistance, and easy assembly. If the tilt angle is an intermediate value, such as 30°~60°, it is a moderate tilt, which is suitable for common space avoidance needs, balancing space utilization and flow performance, and ensuring a compact pipeline. If the tilt angle is 75°, it is a large-angle tilt, which is suitable for spaces with limited height or complex avoidance, enabling complex pipelines to bypass and avoiding interference, but attention should be paid to flow loss.

[0112] In summary, by limiting the centerline inclination angle of the first bend 1323 and the second bend 1332 to 5°~75°, sufficient spatial flexibility is provided for the second suction pipe 132 and the third suction pipe 133, enabling them to reasonably bypass obstacles within a limited space and achieve vertical alignment and parallel opening direction with the outlet end of the first suction pipe 131. This solution takes into account the requirements of spatial layout, fluid flow performance and manufacturing assembly, and improves the overall performance and reliability of the suction piping system of compressor 1.

[0113] In some embodiments, the tilt angle can optionally refer to the angle between the normal vectors of the two openings at the centerline of the bend, with a range of 85° to 95° indicating that the bend is almost perpendicular to the reference plane, which can be understood as an angle close to perpendicular or slightly deviating from perpendicularity. The fact that all three bends fall within this high tilt angle range indicates that their bend sections are approximately perpendicular to the reference plane.

[0114] Specifically, the inclination angle of the bend is close to 90°, so that the outlet end of the pipe (the opening of the bend away from the straight pipe) is almost perpendicular to the straight pipe extending in the first direction. This ensures that the outlet openings of the three suction pipes 13 are in the same direction and vertically arranged, achieving the vertical alignment requirement of the compressor 1 suction port. This facilitates the sealing connection between the pipe and the compressor body 11, ensures that the gas flows neatly to the compression mechanism, and improves the uniformity of airflow and suction efficiency.

[0115] Specifically, such as Figure 9 As shown, the inclination angle of the third bend section 1333 is 90°.

[0116] In addition, the tilt angle is close to vertical. In conjunction with the straight pipe section of the aforementioned pipeline extending along the first direction, the bend section achieves a turn from the horizontal or inclined direction to the vertical direction, so that the pipeline can turn from the horizontal or inclined direction of the connection port 121 of the liquid reservoir housing 12 to the vertical downward or upward outlet end, which meets the space installation requirements, facilitates the precise docking of the pipeline with the vertical suction port of the compressor housing 1, and reduces the assembly difficulty.

[0117] Optionally, a bend with an inclination angle close to 90° is equivalent to a "right-angle bend" in the pipeline. While ensuring the spatial layout, the bending radius can be reasonably controlled to avoid airflow turbulence caused by excessively sharp bends. Although right-angle bends may introduce a certain pressure drop, the combination with a bending radius design larger than the pipe diameter can effectively reduce fluid resistance, ensure that gas flows smoothly into the compression mechanism, and reduce noise and vibration.

[0118] In general, the centerline inclination angle of the bends of the three suction pipes 13 is 85°~95°, which realizes the basic vertical direction characteristics of the pipe outlet end, meets the vertical alignment requirements of the compressor 1 suction port, and also takes into account the rationality of spatial layout, the optimization of flow performance and the convenience of manufacturing and assembly.

[0119] In some embodiments, optionally, the normal plane of the first direction refers to the plane perpendicular to the first direction, which is generally the cross section where the connection port 121 of the reservoir housing 12 is located. The center point of the connection port 121 is spatially arranged on the normal plane. The center of the first port 1211, the center of the second port 1212 and the center of the third port 1213 respectively locate the specific positions of the three connection ports 121 on the normal plane of the first direction. It can be understood that each center point corresponds to the inlet position of a suction tube 13.

[0120] The spatial arrangement of the three connection ports 121 at their center points forms an acute triangle (i.e., all angles within the triangle are less than 90°), which differs from straight or obtuse triangle arrangements. This optimizes the spatial distribution of the connection ports 121, avoiding linear or overly dispersed layouts, improving space utilization, and resulting in a more compact and rational piping layout. Furthermore, the acute-angled triangular layout ensures a moderate difference in the diameter and length of the three suction pipes 13, achieving uniform refrigerant flow distribution and reducing flow unevenness and pressure loss. Of course, the distribution of the triangle's vertices also facilitates pipe bend design and avoidance, reducing pipe crossings and interference, and improving mechanical stability and assembly convenience.

[0121] Optionally, the center points of the three connection ports 121 form an acute triangle on the first direction normal plane, ensuring a reasonable spacing and spatial relationship between the connection ports 121. This provides a reasonable starting position for the three suction pipes 13, allowing the pipes to extend smoothly along straight and curved sections without interference. The spatial distribution of the acute triangle helps to achieve vertical alignment of the outlet ends of the three suction pipes 13, improving the sealing and connection efficiency with the suction port of the compressor body 11.

[0122] In summary, by arranging the centers of the first port 1211, the second port 1212, and the third port 1213 on the normal plane of the first direction as the three vertices of the same acute triangle, the spatial optimization layout of the connection port 121 of the liquid receiver housing 12 is achieved. At the same time, the compactness of the pipeline structure is improved, making the refrigerant flow path more uniform and stable, thereby improving the assembly convenience and sealing reliability of the overall structure of the refrigeration equipment.

[0123] Another embodiment of this application provides a refrigeration device, including any of the above-mentioned compressors 1. The refrigeration device improves the thermodynamic efficiency and operational stability of the refrigeration device by adopting a compressor 1 with a reasonable suction pipe 13 layout, flow optimization and mass balance. The compressor 1 has a compact overall design and a reasonable arrangement of suction pipes 13, which facilitates the overall miniaturization design of the refrigeration device, saves equipment space, facilitates installation in various application scenarios, simplifies equipment pipeline layout, and reduces manufacturing and maintenance difficulties.

[0124] The refrigeration equipment includes, but is not limited to, household air conditioners, commercial refrigerators, heat pump systems, and other types of refrigeration equipment.

[0125] It should be added that, since the refrigeration equipment in this solution includes the aforementioned compressor 1, it has the beneficial effects of any of the aforementioned compressor 1, which will not be elaborated here.

[0126] It should be added that the refrigeration equipment only needs to include the compressor 1 mentioned above, and can be any type and structure of equipment.

[0127] This application also provides a specific embodiment of a compressor and refrigeration cycle device that improves the uniformity of refrigerant flow by optimizing the spatial distribution of the suction pipe; by increasing the distance between the main suction pipe (first suction pipe) and the compressor body, the suction pipe can realize the possibility of connecting to the three suction ports of the housing, thus optimizing the refrigerant flow path; maintaining the compactness of the triangular layout while improving the uniformity of the flow distribution; and the three-dimensional curved second / third suction pipe design maintains structural stability.

[0128] A rotary compressor and its receiver structure are disclosed. The compressor includes a housing, a motor, a compressor section, and a receiver assembly. The compressor section includes three gas inlets, and the receiver includes three suction pipe components. The three gas inlets of the compressor are vertically aligned; therefore, the three suction pipe components of the receiver must be rationally arranged to ensure that the three suction pipes are also vertically aligned. Through a triangular pipe arrangement and bends on both sides, the outlets of the three suction pipes are ultimately vertically aligned, and the refrigerant can be evenly distributed through a reasonable design of the pipe length.

[0129] A compressor has a compressor body, a compression mechanism and an electric motor that drives multiple compression mechanisms within a housing; a receiver (i.e., receiver housing) supported on the compressor body, having a refrigerant inlet and three suction pipes at its upper part, one end of which opens inside the receiver and the other end is connected to three suction ports on the housing. The three suction pipes include a first suction pipe, a second suction pipe and a third suction pipe. Viewed from above the receiver, the three suction pipes form an acute triangle at the center point of the cross-section penetrating the bottom of the receiver.

[0130] The distance between the center point of the first suction pipe and the center of the compressor body is greater than the distance between the center point of the second suction pipe and the center of the third suction pipe and the center of the compressor body.

[0131] The first suction tube can be connected to any of the three suction ports of the shell by adjusting its vertical length.

[0132] The three suction tubes have a main bend that curves from the bottom of the reservoir toward the suction port.

[0133] The centerline radius (R) of each bend in the three suction tubes is greater than or equal to the outer diameter (D) of the suction tube.

[0134] The first inhalation tube (main inhalation tube) adopts an "L-shaped three-dimensional bending" structure:

[0135] First section: Extends vertically downwards from the bottom of the reservoir (length L1 = 30~140mm)

[0136] Second segment: Horizontally offset outwards (offset ΔX = 30~90mm)

[0137] The second and third inhalation tubes adopt an "S-shaped composite bend":

[0138] The middle bend: forms an inward tilt angle of 5° to 75°, preferably 15° to 45°.

[0139] The second bend: the tube is bent at 90° to achieve a perpendicular connection with the shell.

[0140] The radius (R) formed by the centerline of the pipe at the bend is greater than or equal to the outer diameter (D) of the pipe.

[0141] Assuming the outer diameter of the pipe is 18mm, the radius (R) of the center line of each bend must be greater than or equal to R18.

[0142] This is achieved by adjusting the extension length L1 of the first suction tube:

[0143] When connected to the upper suction port: L1 takes the minimum value (31mm).

[0144] When connecting to the lower or middle intake port: L1 is lengthened by 40~110mm.

[0145] A segmented brazing process is adopted: First, the vertical section of the first suction pipe and the liquid reservoir housing is fixed. Then, the inclined sections of the second and third suction pipes are assembled and positioned and welded. Finally, the bend section is assembled with the compressor housing as a whole.

[0146] Setting a positioning fixture ensures:

[0147] The coaxiality of the center lines of the three-pipe outlets is ≤ φ0.8mm.

[0148] Pipe spacing tolerance ±1mm.

[0149] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" 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.

[0150] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0151] 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.

[0152] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compressor, characterized in that, include: Compressor body; A liquid receiver housing is located on one side of the compressor body, and the liquid receiver housing has multiple connection ports at one end in a first direction; Multiple suction tubes are connected to the reservoir housing via the connection port, with one end of each suction tube located inside the reservoir housing and the other end connected to the compressor body; The connection port includes a first port, a second port, and a third port. On the normal plane of the first direction, the center of the first port is at a first distance from the center of the compressor body, the center of the second port is at a second distance from the center of the compressor body, and the center of the third port is at a third distance from the center of the compressor body. The first distance is greater than the second distance, and the first distance is greater than the third distance. The plurality of inhalation tubes include a first inhalation tube, a second inhalation tube, and a third inhalation tube. The first inhalation tube is connected to the reservoir housing through a first port, the second inhalation tube is connected to the reservoir housing through a second port, and the third inhalation tube is connected to the reservoir housing through a third port. The first inhalation tube includes a first straight tube segment and a first curved tube segment; the second inhalation tube includes a second straight tube segment, a first curved tube segment and a second curved tube segment; and the third inhalation tube includes a third straight tube segment, a second curved tube segment and a third curved tube segment. The first straight pipe section, the second straight pipe section, and the third straight pipe section extend along the first direction, and the opening directions of the end of the first bend pipe section away from the first straight pipe section, the opening directions of the end of the second bend pipe section away from the second straight pipe section, and the opening directions of the end of the third bend pipe section away from the third straight pipe section are parallel to each other.

2. The compressor according to claim 1, characterized in that, The center of the opening at the end of the first bend away from the first straight pipe section, the center of the opening at the end of the second bend away from the second straight pipe section, and the center of the opening at the end of the third bend away from the third straight pipe section are on the same plane, and the first direction extends along the plane.

3. The compressor according to claim 1, characterized in that, In the first direction, the minimum distance between the first bend section and the reservoir housing is less than the minimum distance between the second bend section and the reservoir housing, and the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing. or In the first direction, the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the first bend section and the reservoir housing, and the minimum distance between the first bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing. or In the first direction, the minimum distance between the second bend section and the reservoir housing is less than the minimum distance between the third bend section and the reservoir housing, and the minimum distance between the third bend section and the reservoir housing is less than the minimum distance between the first bend section and the reservoir housing.

4. The compressor according to claim 1, characterized in that, The bending radius of the centerline of the first bend is greater than the outer diameter of the first suction pipe. The bending radius of the centerline of the first bend is greater than the outer diameter of the second suction tube, and the bending radius of the centerline of the second bend is greater than the outer diameter of the second suction tube. The bending radius of the centerline of the second bend is greater than the outer diameter of the third suction tube, and the bending radius of the centerline of the third bend is greater than the outer diameter of the third suction tube.

5. The compressor according to claim 1, characterized in that, The inclination angle of the centerline of the first bend ranges from 5° to 75°; The inclination angle of the centerline of the second bend ranges from 5° to 75°.

6. The compressor according to claim 1, characterized in that, The inclination angle of the centerline of the first bend is 85°~95°; The inclination angle of the centerline of the second bend is 85°~95°; The inclination angle of the centerline of the third bend is 85°~95°.

7. The compressor according to any one of claims 1 to 6, characterized in that, On the normal plane of the first direction, the center of the first opening, the center of the second opening, and the center of the third opening are the three vertices of the same acute triangle.

8. A refrigeration device, characterized in that, include: The compressor as described in any one of claims 1 to 7.

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