A liquid receiver, a compressor assembly, and an air conditioner

Abstract

This invention provides a liquid receiver, a compressor assembly, and an air conditioner. The liquid receiver includes an inlet pipe connector, an outlet pipe connector, and an upper end cap. The inlet pipe connector includes a first connector pressure plate and a first connector portion. The first connector portion is partially inserted into a first receiving cavity, and the remaining portion is fixedly connected to the first inlet pipe. The first connector pressure plate is fitted around the outer periphery of the first connector portion and fixedly connected to the upper end cap. The first connector portion and the first inlet pipe form an integral structure and can rotate relative to the first connector pressure plate. And / or, the outlet pipe connector includes a second connector pressure plate and a second connector portion. A portion of the second connector portion is inserted into a second receiving cavity, and the remaining portion is fixedly connected to the first outlet pipe. The second connector pressure plate is fitted around the outer periphery of the second connector portion and fixedly connected to the upper end cap. The second connector portion and the first outlet pipe form an integral structure and can rotate relative to the second connector pressure plate. This invention can automatically compensate for installation errors of the inlet and outlet pipes, reduce or eliminate residual stress, and improve the strength and reliability of the air conditioning system.

Description

Technical Field

[0001] This invention relates to the field of liquid receiver technology, specifically to a liquid receiver, a compressor assembly, and an air conditioner. Background Technology

[0002] In complex air conditioning systems, receivers are used to store and regulate the refrigerant demand fluctuations caused by load changes. A typical receiver consists of inlet and outlet pipes, a cylinder, and a mounting plate, with the inlet and outlet pipes welded to the top of the cylinder.

[0003] Similar to liquid receivers, the inlet and outlet pipes are connected to other piping components in the air conditioning system via welding. This makes disassembly and reassembly inconvenient for after-sales service. Furthermore, some equipment has specific requirements prohibiting welding during after-sales maintenance, rendering this connection method unusable. Additionally, these liquid receivers require high precision in installation position and angle, thus they are mostly used in copper pipe systems. Because copper pipes are relatively soft, their ductility allows them to deform during installation to compensate for assembly errors, resulting in residual stress in the pipes and affecting system reliability.

[0004] Because the inlet and outlet pipes of the liquid receiver in the prior art may have installation errors after being fixed to the liquid receiver, resulting in unnecessary rotation of the inlet and outlet pipes, which leads to residual stress and deformation of the inlet and outlet pipes, resulting in technical problems such as reduced strength and reliability of the air conditioning system, this invention studies and designs a liquid receiver, compressor assembly and air conditioner. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that residual stress is generated due to installation errors after the inlet and outlet pipes of the liquid receiver are fixed to the liquid receiver in the prior art, thereby providing a liquid receiver, compressor assembly and air conditioner.

[0006] To address the above problems, the present invention provides a liquid reservoir comprising:

[0007] Inlet pipe connector, outlet pipe connector, and top end cap;

[0008] The inlet pipe connector includes a first connector pressure plate and a first connector portion. The upper end cap is provided with a first receiving cavity. A portion of the first connector portion is inserted into the first receiving cavity, and the other portion extends out of the first receiving cavity and is fixedly connected to the first inlet pipe. The first connector pressure plate is sleeved on the outer periphery of the first connector portion and fixedly connected to the upper end cap to limit a portion of the first connector portion in the first receiving cavity. The first connector portion and the first inlet pipe form an integral structure and can rotate relative to the first connector pressure plate.

[0009] And / or, the outlet pipe connector includes a second connector pressure plate and a second connector portion, the upper end cap is provided with a second receiving cavity, a portion of the second connector portion is inserted into the second receiving cavity, and the other portion extends out of the second receiving cavity and is fixedly connected to the first outlet pipe, the second connector pressure plate is sleeved on the outer periphery of the second connector portion and fixedly connected to the upper end cap, so as to limit the portion of the second connector portion in the second receiving cavity, the second connector portion and the first outlet pipe form an integral structure and can rotate relative to the second connector pressure plate.

[0010] In some embodiments, the first connector is a cylindrical structure, including a first body and an annular first step disposed on the outer periphery of the first body. The first step is engaged on the upper end face of the upper end cap. The first connector pressure plate has a first central hole. The first connector pressure plate is sleeved on the first body through the first central hole. The first connector pressure plate and the upper end face of the first step are engaged.

[0011] The second connector is a cylindrical structure, including a second body and an annular second step disposed on the outer periphery of the second body. The second step is engaged on the upper end face of the upper end head. The second connector pressure plate has a second central hole. The second connector pressure plate is sleeved on the second body through the second central hole. The second connector pressure plate engages with the upper end face of the second step.

[0012] In some embodiments, the first joint pressure plate includes a first pressure plate body and a first pressure plate extension. One end of the first pressure plate extension is connected to the edge of the first pressure plate body and the other end extends downward to form a downward-facing first inner step. The first inner step and the upper end face of the first step are engaged to surround the first step inside the first pressure plate extension.

[0013] The second joint pressure plate includes a second pressure plate body and a second pressure plate extension. One end of the second pressure plate extension is connected to the edge of the second pressure plate body and the other end extends downward to form a downward-facing second inner step. The second inner step and the upper end face of the second step are engaged to surround the second step inside the second pressure plate extension.

[0014] In some embodiments, the first connector pressure plate is provided with at least one first mounting hole, the upper end cap is provided with at least one second mounting hole, and the liquid reservoir further includes a first fastener. The first mounting hole and the second mounting hole are arranged opposite to each other, and the first fastener passes through both the first mounting hole and the second mounting hole to form a fixed connection between the first connector pressure plate and the upper end cap.

[0015] The second connector pressure plate is provided with at least one third mounting hole, the upper end cap is provided with at least one fourth mounting hole, the liquid reservoir also includes a second fastener, the third mounting hole and the fourth mounting hole are arranged opposite to each other, and the second fastener passes through both the third mounting hole and the fourth mounting hole to form a fixed connection between the second connector pressure plate and the upper end cap.

[0016] In some embodiments, the first mounting hole is provided through the upper and lower end faces of the first pressure plate body; there are two first mounting holes, which are symmetrically arranged with respect to the first central hole;

[0017] The third mounting hole is provided through the upper and lower end faces of the second pressure plate body; there are two third mounting holes, which are symmetrically arranged relative to the second center hole.

[0018] In some embodiments, the shaft segment of the first body located at the lower part of the first step is a first shaft segment, the first shaft segment is inserted into the first receiving cavity, and a first sealing ring is also sleeved on the outer periphery of the first shaft segment;

[0019] The shaft segment located at the lower part of the second step of the second body is the second shaft segment. The second shaft segment is inserted into the second receiving cavity, and a second sealing ring is also sleeved on the outer periphery of the second shaft segment.

[0020] In some embodiments, a first annular groove is formed on the outer periphery of the first shaft segment, and the first sealing ring is engaged in the first annular groove; and there are at least two first annular grooves arranged along the axial direction of the first shaft segment, and there are also at least two first sealing rings, and the first sealing rings are arranged in a one-to-one correspondence with the first annular grooves.

[0021] A second annular groove is provided on the outer periphery of the second shaft segment, and the second sealing ring is engaged in the second annular groove; and there are at least two second annular grooves arranged along the axial direction of the second shaft segment, and there are also at least two second sealing rings, and the second sealing rings are arranged in a one-to-one correspondence with the second annular grooves.

[0022] In some embodiments, the first connector has a third central hole penetrating its upper and lower end faces, the third central hole communicating with the first receiving cavity, and the first inlet tube being inserted into the third central hole from the upper end of the first connector.

[0023] The second connector has a fourth central hole that extends through its upper and lower end faces. The fourth central hole communicates with the second receiving cavity. The first outlet tube is inserted into the fourth central hole from the upper end of the second connector.

[0024] In some embodiments, the first inlet tube is interference-fitted with or welded to the third center hole to form a fixed connection between the first inlet tube and the first connector.

[0025] The first outlet tube is interference-fitted or welded to the fourth center hole to form a fixed connection between the first outlet tube and the second connector.

[0026] In some embodiments, the system further includes a cylindrical body, a second inlet pipe, and a second outlet pipe. The upper end of the cylindrical body is fixedly connected to the upper end cap. The upper end of the second inlet pipe is fixedly connected to the upper end cap, and the lower end extends into the interior of the cylindrical body. The upper end of the second inlet pipe can communicate with the first inlet pipe. The upper end of the second outlet pipe is fixedly connected to the upper end cap, and the lower end extends into the interior of the cylindrical body. The upper end of the second outlet pipe can communicate with the first outlet pipe.

[0027] In some embodiments, the upper end cap is further provided with a first hole and a second hole. Both the first and second receiving cavities are recessed structures. The first hole is located at the lower end of the first receiving cavity and its upper end communicates with the first receiving cavity. The lower end of the first hole communicates with the inner cavity of the cylinder. The upper end of the second inlet pipe passes through the first hole. The second hole is located at the lower end of the second receiving cavity and its upper end communicates with the second receiving cavity. The lower end of the second hole communicates with the inner cavity of the cylinder. The upper end of the second outlet pipe passes through the second hole.

[0028] In some embodiments, the second inlet pipe and the second outlet pipe have the same structure and are inserted into the inner cavity of the cylinder to the same depth, and the first inlet pipe and the first outlet pipe have the same structure.

[0029] In some embodiments, a lower end cap and a mounting bracket are also included. The lower end cap is fixedly connected to the lower end of the cylinder. The mounting bracket is connected to the lower end cap and can fix the lower end cap to the mounting seat at the lower end of the liquid reservoir. The mounting bracket can also limit the circumferential position of the lower end cap.

[0030] In some embodiments, the lower end cap includes an end cap body and teeth. The end cap body has a disc-shaped structure, and the teeth are located on the outer periphery of the end cap body and protrude radially outward. The mounting bracket includes a mounting bracket body and a toothed groove. The mounting bracket body has an annular structure, and the toothed groove is a groove located on one axial end face of the mounting bracket body. The toothed groove is opposite to the teeth. The lower end cap can rotate to a preset position and move along the axial direction of the cylinder so that the teeth and the toothed groove engage, thereby forming a circumferential limit between the lower end cap and the mounting bracket.

[0031] In some embodiments, the grooves are disposed on the axial end face of the mounting frame body and are connected to the radial inner circumference of the mounting frame body, and extend from the radial inner circumference to the radial outer circumference. There are multiple grooves that are sequentially connected along the circumferential direction of the mounting frame body, and there are at least two teeth that are spaced apart along the circumferential direction of the end cap body.

[0032] In some embodiments, the mounting bracket further includes a protruding mounting portion disposed on the outer periphery of the mounting bracket body and protruding radially outward. The protruding mounting portion has a fifth mounting hole extending through both axial end faces, through which the mounting bracket can be fixed to the mounting base.

[0033] The present invention also provides a compressor assembly comprising the liquid receiver described in any of the preceding claims.

[0034] The present invention also provides an air conditioner that includes the aforementioned compressor assembly.

[0035] The liquid receiver, compressor assembly, and air conditioner provided by this invention have the following beneficial effects:

[0036] 1. This invention, by configuring the inlet pipe connector as a separate first connector pressure plate and a first connector portion, allows the first connector portion to be fixedly connected to the first inlet pipe. The first connector pressure plate limits a portion of the first connector portion into the first receiving cavity of the upper end cap, thereby forming an axial limit on the first connector portion. The first connector portion and the first inlet pipe are integrated into a single structure and can rotate relative to the first connector pressure plate. This allows for compensation of installation errors in the first inlet pipe after it is connected to the upper end cap of the liquid reservoir, preventing residual stress in the first inlet pipe or other locations due to installation errors, and preventing deformation of the first inlet pipe. This achieves automatic compensation of installation errors in the first inlet pipe, improving the strength and reliability of the air conditioning system. Similarly, this invention, by configuring the outlet pipe connector as a separate second connector pressure plate and a second connector portion, allows for... The head is fixedly connected to the first outlet pipe, while the second connector pressure plate limits part of the second connector portion into the second receiving cavity of the upper end cap, thereby forming an axial limit on the second connector portion. The second connector portion and the first outlet pipe are integrated into a single structure and can rotate relative to the second connector pressure plate. This allows for compensation of installation errors in the first outlet pipe after it is connected to the upper end cap of the liquid receiver by rotating the first outlet pipe. This prevents residual stress in the first outlet pipe or other locations due to installation errors, and also prevents deformation of the first outlet pipe. It automatically compensates for installation errors in the first outlet pipe, reduces or eliminates residual stress, and improves the strength and reliability of the air conditioning system. When the liquid receiver of this invention is connected to the air conditioning system, the specific structure of the inlet and outlet pipe joints reduces the accuracy requirements of the liquid receiver system piping, effectively enabling the system piping components and joints to meet assembly requirements even when welded at any angle. The liquid receiver can be modularly applied in the air conditioning system as needed, and after-sales maintenance and disassembly do not require welding, thereby expanding the application scope of the liquid receiver, especially for special air conditioning systems such as airborne and shipboard systems.

[0037] 2. This invention also reduces the installation precision requirements of the liquid receiver by using a matching structure between the mounting bracket and the lower end cap. By adjusting the angle between the liquid receiver cylinder and the mounting bracket, the precision requirements of the liquid receiver during installation can be guaranteed, ensuring that the liquid receiver is accurately assembled into the air conditioning system according to the design position. By compensating for errors in both piping and installation, residual stress caused by assembly errors is eliminated, improving the system's strength and reliability. Because it can compensate for installation and piping errors, the liquid receiver of this invention can be used in air conditioning piping systems with high rigidity, such as aluminum pipes and stainless steel pipes, thereby greatly improving the air conditioning system's impact and vibration resistance. Attached Figure Description

[0038] Figure 1 This is an assembly structure diagram of the liquid reservoir with built-in error compensation according to the present invention;

[0039] Figure 2 This is an exploded structural diagram of the liquid reservoir of the present invention;

[0040] Figure 2-1 for Figure 2 Enlarged structural views of the first and second joint pressure plates in the diagram;

[0041] Figure 2-2 for Figure 2 Enlarged structural views of the first and second joints in the diagram;

[0042] Figure 2-3 for Figure 2 Enlarged view of the upper end cap structure;

[0043] Figure 3 This is a structural diagram of the mounting bracket for the liquid reservoir of the present invention;

[0044] Figure 4 for Figure 1 Axial sectional view of the reservoir in the middle;

[0045] Figure 4-1 for Figure 4 A magnified view of part A.

[0046] The reference numerals in the attached figures are as follows:

[0047] 1. First inlet pipe; 2. Inlet pipe connector; 2-1. First connector pressure plate; 2-11. First center hole; 2-12. First pressure plate body; 2-13. First pressure plate extension; 2-14. First inner step; 2-2. First connector part; 2-21. First body; 2-22. First step; 2-23. First annular groove; 2-24. Third center hole; 2-3. First sealing ring; 2-4. First fastener; 2-5. First mounting hole; 3. Upper end cap; 3-1. First receiving cavity; 3-2. Second receiving cavity; 3-3. Second mounting hole; 3-4. Fourth mounting hole; 3-5. First hole; 3-6. Second hole; 4. Cylinder body; 5. Mounting bracket; 5-1. Fifth mounting hole; 5-2. Toothed groove; 5-3. Mounting bracket body; 5-4. Protruding mounting part; 6. First outlet pipe; 7. Outlet pipe connector; 7-1. Second connector pressure plate; 7-11. Second center hole; 7-12. Second pressure plate body; 7-13. Second pressure plate extension; 7-14. Second inner step; 7-2. Second connector part; 7-21. Second body; 7-22. Second step; 7-23. Second annular groove; 7-24. Fourth center hole; 7-3. Second sealing ring; 7-4. Second fastener; 7-5. Third mounting hole; 8. Second outlet pipe; 9. Lower end cap; 9-1. Toothed part; 9-2. End cap body; 10. Second inlet pipe. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0049] Combination Figure 1-4 As shown, the present invention provides a liquid reservoir with built-in error compensation and a first inlet pipe 1 and a first outlet pipe 6. The liquid reservoir includes:

[0050] Inlet pipe connector 2, outlet pipe connector 7, and upper end cap 3;

[0051] The inlet pipe connector 2 includes a first connector pressure plate 2-1 and a first connector portion 2-2. The upper end cap 3 is provided with a first receiving cavity 3-1. A portion of the first connector portion 2-2 is inserted into the first receiving cavity 3-1, and the other portion extends out of the first receiving cavity 3-1 and is fixedly connected to the first inlet pipe 1. The first connector pressure plate 2-1 is sleeved on the outer periphery of the first connector portion 2-2 and fixedly connected to the upper end cap 3 to limit a portion of the first connector portion 2-2 in the first receiving cavity 3-1. The first connector portion 2-2 and the first inlet pipe 1 form an integral structure and can rotate relative to the first connector pressure plate 2-1.

[0052] And / or, the outlet pipe connector 7 includes a second connector pressure plate 7-1 and a second connector portion 7-2. The upper end cap 3 is provided with a second receiving cavity 3-2. A portion of the second connector portion 7-2 is inserted into the second receiving cavity 3-2, and the other portion extends out of the second receiving cavity 3-2 and is fixedly connected to the first outlet pipe 6. The second connector pressure plate 7-1 is sleeved on the outer periphery of the second connector portion 7-2 and fixedly connected to the upper end cap 3 to limit a portion of the second connector portion 7-2 in the second receiving cavity 3-2. The second connector portion 7-2 and the first outlet pipe 6 form an integral structure and can rotate relative to the second connector pressure plate 7-1.

[0053] This invention, by configuring the inlet pipe connector as a separate first connector pressure plate and a first connector portion, allows the first connector portion to be fixedly connected to the first inlet pipe. The first connector pressure plate limits a portion of the first connector portion into the first receiving cavity of the upper end cap, thereby forming an axial limit on the first connector portion. The first connector portion and the first inlet pipe are integrated into a single structure and can rotate relative to the first connector pressure plate. This allows for compensation of installation errors in the first inlet pipe after it is connected to the upper end cap of the liquid reservoir, preventing residual stress or deformation of the first inlet pipe due to installation errors. This achieves automatic compensation for installation errors of the first inlet pipe, improving the strength and reliability of the air conditioning system. Similarly, this invention, by configuring the outlet pipe connector as a separate second connector pressure plate and a second connector portion, allows for... The second connector is fixedly connected to the first outlet pipe, and the second connector pressure plate limits part of the second connector to the second receiving cavity of the upper end cap, thereby forming an axial limit on the second connector. The second connector and the first outlet pipe are integrated into a single structure and can rotate relative to the second connector pressure plate. This allows for compensation of installation errors in the first outlet pipe after it is connected to the upper end cap of the liquid receiver by rotating the first outlet pipe. This prevents residual stress or deformation of the first outlet pipe or other locations due to installation errors, thus automatically compensating for installation errors and improving the strength and reliability of the air conditioning system. When the liquid receiver of this invention is connected to the air conditioning system, the specific structure of the inlet and outlet pipe connectors reduces the accuracy requirements of the liquid receiver system piping, effectively allowing the system piping components and connectors to be welded at any angle to meet assembly requirements. The liquid receiver can be modularly applied in the air conditioning system as needed, and after-sales maintenance and disassembly do not require welding, thereby expanding the application scope of the liquid receiver, especially for special air conditioning systems such as airborne and shipboard systems.

[0054] This invention provides a quick-release liquid receiver with error compensation, overcoming the shortcomings of the aforementioned liquid receivers. It is easy to disassemble and assemble, requires no welding for maintenance, and facilitates modular application. Furthermore, through a specific compensation structure, precise assembly is achieved in both piping and installation. This solves the problems of inconvenient disassembly and assembly during after-sales maintenance and the reduction in the strength and reliability of the air conditioning system due to residual stress caused by piping deformation resulting from installation errors.

[0055] Regarding the connection between the liquid receiver and the air conditioning system, this invention, through a specific structure of the inlet and outlet pipe joints, enables the system piping components and joints to be welded at any angle to meet assembly requirements. The liquid receiver itself is easy to install and fix; by adjusting the angle between the liquid receiver cylinder and the mounting bracket, the accuracy requirements of the liquid receiver during installation can be guaranteed.

[0056] The beneficial effects are as follows:

[0057] 1. Liquid receivers can be modularly applied in air conditioning systems as needed, and after-sales maintenance and disassembly do not require welding, thereby expanding the application scope of liquid receivers, especially for special air conditioning systems such as airborne and shipboard systems;

[0058] 2. The piping accuracy requirements of the liquid storage system are reduced. By using specific inlet and outlet pipe fittings, the assembly requirements can be met even when the piping and fittings are connected at any angle.

[0059] 3. The installation accuracy requirements of the liquid receiver are reduced. By adjusting the angle between the mounting bracket and the cylinder, it can be ensured that the liquid receiver is accurately assembled into the air conditioning system according to the design position.

[0060] 4. By compensating for errors in both piping and installation, residual stress caused by assembly errors is eliminated, thereby improving the system's strength and reliability;

[0061] 5. Because it can compensate for installation and piping errors, this type of liquid receiver can be used in air conditioning piping systems with high rigidity, such as aluminum pipes and stainless steel pipes, thereby greatly improving the air conditioning system's resistance to shock and vibration.

[0062] The improvements of this invention are as follows:

[0063] 1. In this invention, the connector pressure plate and the double H-nose connector (i.e., the first connector part and the second connector part) are designed separately. The connector pressure plate adopts a symmetrical structure and can rotate around the connector at any angle, thereby eliminating the angle requirement for the connection between the connector and the pipeline; a double H-nose radial sealing connector is designed to achieve a sealed connection between the connector and the liquid reservoir.

[0064] 2. The inlet and outlet pipes inside the liquid reservoir have the same structure, leading directly to the bottom of the cylinder. The structure enables the inlet and outlet pipes to be interchangeable, thus achieving a foolproof piping design.

[0065] 3. The upper end cap of the liquid reservoir is designed with a matching mounting countersunk hole that aligns with the double H-nozzle and mounting pressure plate;

[0066] 4. The lower end cap of the reservoir is designed with a toothed structure to match the mounting bracket;

[0067] 5. The corresponding position of the liquid reservoir mounting bracket is designed with a toothed countersunk structure to limit the axial movement of the cylinder body. It is designed to cooperate with the toothed structure on the edge of the lower end cap. The number of such toothed structures should be large and evenly distributed throughout the inner side of the mounting bracket.

[0068] 6. The cylinder, upper and lower end caps, and inlet and outlet pipes are connected by welding. The inlet and outlet pipe joints are connected to the upper end cap with O-ring seals. The liquid reservoir is installed by pressing the mounting bracket to the lower end cap with bolts. High-strength 6-series aluminum alloy is recommended as the material.

[0069] In some embodiments, the first connector portion 2-2 is a cylindrical structure, including a first body 2-21 and an annular first step 2-22 disposed on the outer periphery of the first body 2-21. The first step 2-22 is engaged on the upper end face of the upper end cap 3. The first connector pressure plate 2-1 has a first central hole 2-11. The first connector pressure plate 2-1 is sleeved on the first body 2-21 through the first central hole 2-11. The first connector pressure plate 2-1 and the upper end face of the first step 2-22 are engaged.

[0070] The second connector 7-2 is a cylindrical structure, including a second body 7-21 and an annular second step 7-22 disposed on the outer periphery of the second body 7-21. The second step 7-22 is engaged on the upper end face of the upper end head 3. The second connector pressure plate 7-1 has a second central hole 7-11. The second connector pressure plate 7-1 is sleeved on the second body 7-21 through the second central hole 7-11, and the second connector pressure plate 7-1 engages with the upper end face of the second step 7-22.

[0071] This is a preferred structural form of the first connector and the second connector of the present invention. The first step allows the first connector to be engaged with the upper end face of the upper end head via the lower end face of the first step, thus limiting the downward movement of the first connector. The upper end face of the first step forms a limit with the first connector pressure plate, preventing the first connector from moving upward. This effectively limits the first connector to the upper end head, preventing it from moving up and down, or restricting its range of movement. However, it does not restrict the first connector from rotating integrally with the first inlet pipe, achieving self-compensation and adjustment of installation errors and reducing installation difficulties. Residual stress is reduced, improving operational reliability. The second step allows the second connector to be engaged with the upper end face of the upper head via the lower end face of the second step, limiting the downward movement of the second connector. The upper end face of the second step can also form a limit with the pressure plate of the second connector, preventing the second connector from moving upward. This effectively limits the second connector to the upper head, preventing it from moving up or down, or restricting its range of movement. However, it does not restrict the second connector from rotating as an integral part with the second inlet pipe, achieving self-compensation and adjustment of installation errors, reducing residual stress during installation, and improving operational reliability.

[0072] In some embodiments, the first joint pressure plate 2-1 includes a first pressure plate body 2-12 and a first pressure plate extension 2-13. One end of the first pressure plate extension 2-13 is connected to the edge of the first pressure plate body 2-12 and the other end extends downward to form a downward-facing first inner step 2-14. The first inner step 2-14 and the upper end face of the first step 2-22 are engaged to surround the first step 2-22 inside the first pressure plate extension 2-13.

[0073] The second joint pressure plate 7-1 includes a second pressure plate body 7-12 and a second pressure plate extension 7-13. One end of the second pressure plate extension 7-13 is connected to the edge of the second pressure plate body 7-12 and the other end extends downward to form a downward-facing second inner step 7-14. The second inner step 7-14 and the upper end face of the second step 7-22 are engaged to surround the second step 7-22 inside the second pressure plate extension 7-13.

[0074] This is a further preferred structural form of the first joint pressure plate and the second joint pressure plate. The first joint pressure plate is configured as a first pressure plate body and a first pressure plate extension to form a first inner step, which is a cover-like structure that can be pressed onto the first step of the first joint, thereby locking and limiting the upward movement of the first step. The second joint pressure plate is configured as a second pressure plate body and a second pressure plate extension to form a second inner step, which is a cover-like structure that can be pressed onto the second step of the second joint, thereby locking and limiting the upward movement of the second step.

[0075] In some embodiments, the first connector pressure plate 2-1 is provided with at least one first mounting hole 2-5, the upper end cap 3 is provided with at least one second mounting hole 3-3, and the liquid reservoir further includes a first fastener 2-4. The first mounting hole 2-5 and the second mounting hole 3-3 are arranged opposite to each other, and the first fastener 2-4 passes through both the first mounting hole 2-5 and the second mounting hole 3-3 to form a fixed connection between the first connector pressure plate 2-1 and the upper end cap 3.

[0076] The second connector pressure plate 7-1 is provided with at least one third mounting hole 7-5, and the upper end cap 3 is provided with at least one fourth mounting hole 3-4. The liquid reservoir also includes a second fastener 7-4. The third mounting hole 7-5 and the fourth mounting hole 3-4 are arranged opposite to each other. The second fastener 7-4 passes through both the third mounting hole 7-5 and the fourth mounting hole 3-4 to form a fixed connection between the second connector pressure plate 7-1 and the upper end cap 3.

[0077] The present invention also utilizes the first mounting hole provided on the first connector pressure plate and the second mounting hole provided on the upper end cap, through which a first fastener is simultaneously inserted, to fix the first connector pressure plate to the upper end cap, thereby effectively limiting the first connector portion in the axial vertical direction; and utilizes the third mounting hole provided on the second connector pressure plate and the fourth mounting hole provided on the upper end cap, through which a second fastener is simultaneously inserted, to fix the second connector pressure plate to the upper end cap, thereby effectively limiting the second connector portion in the axial vertical direction.

[0078] In some embodiments, the first mounting hole 2-5 is provided to penetrate the upper and lower end faces of the first pressure plate body 2-12; there are two first mounting holes 2-5, and they are symmetrically arranged relative to the first central hole 2-11;

[0079] The third mounting hole 7-5 is provided to penetrate the upper and lower end faces of the second pressure plate body 7-12; there are two third mounting holes 7-5, and they are symmetrically arranged relative to the second center hole 7-11.

[0080] This is a preferred configuration of the first mounting hole and the third mounting hole of the present invention, that is, they are respectively provided on the first pressure plate body and the second pressure plate body, so that the first fastener can pass through the first pressure plate body to fix the first joint pressure plate to the upper end cap, and the second fastener passes through the second pressure plate body to fix the second joint pressure plate to the upper end cap.

[0081] In some embodiments, the shaft segment of the first body 2-21 located at the lower part of the first step 2-22 is a first shaft segment. The first shaft segment is inserted into the first receiving cavity 3-1, and a first sealing ring 2-3 is also sleeved on the outer periphery of the first shaft segment.

[0082] The shaft segment of the second body 7-21 located at the lower part of the second step 7-22 is the second shaft segment. The second shaft segment is inserted into the second receiving cavity 3-2, and a second sealing ring 7-3 is also sleeved on the outer periphery of the second shaft segment.

[0083] The present invention also uses a shaft segment located below the first step as the first shaft segment, which is inserted into the first receiving cavity to achieve a plug-in fit between the first connector and the upper end cap, and to achieve a sealing effect. The sealing effect at the contact point between the first connector and the upper end cap is improved by the first sealing ring being fitted around the outer periphery of the first shaft segment. Similarly, a shaft segment located below the second step as the second shaft segment is inserted into the second receiving cavity to achieve a plug-in fit between the second connector and the upper end cap, and to achieve a sealing effect. The sealing effect at the contact point between the second connector and the upper end cap is improved by the second sealing ring being fitted around the outer periphery of the second shaft segment.

[0084] In some embodiments, a first annular groove 2-23 is provided on the outer periphery of the first shaft segment, and the first sealing ring 2-3 is engaged in the first annular groove 2-23; and there are at least two first annular grooves 2-23 arranged along the axial direction of the first shaft segment, and there are also at least two first sealing rings 2-3, and the first sealing rings 2-3 are arranged in a one-to-one correspondence with the first annular grooves 2-23.

[0085] A second annular groove 7-23 is provided on the outer periphery of the second shaft segment, and the second sealing ring 7-3 is engaged in the second annular groove 7-23; and there are at least two second annular grooves 7-23 arranged along the axial direction of the second shaft segment, and there are also at least two second sealing rings 7-3, and the second sealing rings 7-3 and the second annular grooves 7-23 are arranged in a one-to-one correspondence.

[0086] The present invention also utilizes a first annular groove on the outer periphery of the first shaft segment to accommodate a first sealing ring, thereby enhancing the fixing effect of the first sealing ring and improving its sealing performance. The axially arranged multiple first annular grooves and multiple first sealing rings further enhance the sealing performance of the first joint. Similarly, a second annular groove on the outer periphery of the second shaft segment can accommodate a second sealing ring, enhancing the fixing effect of the second sealing ring and improving its sealing performance. The axially arranged multiple second annular grooves and multiple second sealing rings further enhance the sealing performance of the second joint.

[0087] In some embodiments, the first connector 2-2 has a third central hole 2-24 penetrating its upper and lower end faces, the third central hole 2-24 communicating with the first receiving cavity 3-1, and the first inlet tube 1 being inserted into the third central hole 2-24 from the upper end of the first connector 2-2.

[0088] The second connector 7-2 has a fourth central hole 7-24 penetrating its upper and lower end faces. The fourth central hole 7-24 communicates with the second receiving cavity 3-2. The first outlet tube 6 is inserted into the fourth central hole 7-24 from the upper end of the second connector 7-2.

[0089] This is a further preferred structural form of the first connector of the present invention. The third central hole inside the connector can penetrate the first connector and communicate with the first receiving cavity below. The upper end of the third central hole is connected to the first inlet pipe, so as to introduce the gas and liquid in the first inlet pipe into the first receiving cavity and into the cylinder. The second connector can penetrate the second connector and communicate with the second receiving cavity below through the fourth central hole inside the connector. The upper end of the fourth central hole is connected to the first outlet pipe, so as to introduce the gas in the cylinder after gas-liquid separation into the first receiving cavity, and into the first outlet pipe and out.

[0090] In some embodiments, the first inlet tube 1 is press-fitted or welded to the third center hole 2-24 to form a fixed connection between the first inlet tube 1 and the first connector 2-2.

[0091] The first outlet tube 6 is press-fitted or welded to the fourth center hole 7-24 to form a fixed connection between the first outlet tube 6 and the second connector 7-2.

[0092] The first inlet pipe of the present invention is preferably interference-fitted or welded to the third center hole to form an effective fixed connection between the first inlet pipe and the first connector, so that the two can rotate as a whole to compensate for installation errors and reduce residual stress; the first outlet pipe is preferably interference-fitted or welded to the fourth center hole to form an effective fixed connection between the first outlet pipe and the second connector, so that the two can rotate as a whole to compensate for installation errors and reduce residual stress.

[0093] In some embodiments, the system further includes a cylinder 4, a second inlet pipe 10, and a second outlet pipe 8. The upper end of the cylinder 4 is fixedly connected to the upper end cap 3. The upper end of the second inlet pipe 10 is fixedly connected to the upper end cap 3, and the lower end extends into the interior of the cylinder 4. The upper end of the second inlet pipe 10 can communicate with the first inlet pipe 1. The upper end of the second outlet pipe 8 is fixedly connected to the upper end cap 3, and the lower end extends into the interior of the cylinder 4. The upper end of the second outlet pipe 8 can communicate with the first outlet pipe 6. This invention, through the arrangement of the cylinder, the second inlet pipe, and the second outlet pipe, allows the second inlet pipe to connect to the first inlet pipe above it, thereby introducing a gas-liquid mixture into the interior of the cylinder. The second outlet pipe communicates with the interior of the cylinder to discharge the gas after gas-liquid separation within the cylinder through the second outlet pipe to the first outlet pipe.

[0094] In some embodiments, the upper end cap 3 is further provided with a first hole 3-5 and a second hole 3-6. The first receiving cavity 3-1 and the second receiving cavity 3-2 are both recessed structures. The first hole 3-5 is located at the lower end of the first receiving cavity 3-1 and the upper end of the first hole 3-5 communicates with the first receiving cavity 3-1. The lower end of the first hole 3-5 communicates with the inner cavity of the cylinder 4. The upper end of the second inlet pipe 10 passes through the first hole 3-5. The second hole 3-6 is located at the lower end of the second receiving cavity 3-2 and the upper end of the second hole 3-6 communicates with the second receiving cavity 3-2. The lower end of the second hole 3-6 communicates with the inner cavity of the cylinder 4. The upper end of the second outlet pipe 8 passes through the second hole 3-6. The present invention, through the recessed structure of the first and second receiving cavities, can also provide axial downward limiting for the first and second connector portions respectively. The first connector portion and the first receiving cavity are preferably clearance-fitted, but the inner diameter of the first receiving cavity is larger than the inner diameter of the first hole, and the outer diameter of the first connector portion is larger than the inner diameter of the first hole, so that the first connector portion can be effectively limited. The first hole is mainly used for interference fit or welding fit with the second inlet pipe to make the two into a single structure. The second connector portion and the second receiving cavity are preferably clearance-fitted, but the inner diameter of the second receiving cavity is larger than the inner diameter of the second hole, and the outer diameter of the second connector portion is larger than the inner diameter of the second hole, so that the second connector portion can be effectively limited. The second hole is mainly used for interference fit or welding fit with the second outlet pipe to make the two into a single structure.

[0095] In some embodiments, the second inlet pipe 10 and the second outlet pipe 8 have the same structure and are inserted into the inner cavity of the cylinder 4 to the same depth, and the first inlet pipe 1 and the first outlet pipe 6 have the same structure. The inlet and outlet pipes inside the reservoir have the same structure, reaching directly to the bottom of the cylinder. The structure enables the inlet and outlet pipes to be interchangeable, thereby achieving a foolproof piping design and ensuring that the inlet and outlet pipes are interchangeable, thus achieving error-proof piping of the reservoir.

[0096] In some embodiments, the device further includes a lower end cap 9 and a mounting bracket 5. The lower end cap 9 is fixedly connected to the lower end of the cylinder 4. The mounting bracket 5 is connected to the lower end cap 9 and can fix the lower end cap 9 to the mounting seat at the lower end of the liquid reservoir. The mounting bracket 5 can also limit the circumferential position of the lower end cap 9. The present invention also provides sealing and support for the lower end of the cylinder through the lower end cap, and the mounting bracket is used to install the lower end cap onto the mounting seat. Furthermore, the mounting bracket can limit the circumferential position of the lower end cap, ensuring that the liquid reservoir is installed in the correct position.

[0097] In some embodiments, the lower end cap 9 includes an end cap body 9-2 and a toothed portion 9-1. The end cap body 9-2 has a disc-shaped structure, and the toothed portion 9-1 is disposed on the outer periphery of the end cap body 9-2 and protrudes radially outward. The mounting frame 5 includes a mounting frame body 5-3 and a toothed groove 5-2. The mounting frame body 5-3 has an annular structure, and the toothed groove 5-2 is a groove disposed on one axial end face of the mounting frame body 5-3. The toothed groove 5-2 is opposite to the toothed portion 9-1. The lower end cap 9 can rotate to a preset position and move along the axial direction of the cylinder 4 so that the toothed portion 9-1 and the toothed groove 5-2 form a locking, thereby forming a circumferential limit between the lower end cap 9 and the mounting frame 5.

[0098] This is a preferred structural form of the lower end cap and the preferred structural form of the mounting bracket of the present invention. Through the radially outward protruding teeth on the lower end cap and the groove on the mounting bracket, the teeth and groove can be axially aligned and locked together. When it is necessary to adjust the installation angle of the liquid reservoir, the mounting bracket can be (first lifted up, and since the mounting bracket is located above the lower end cap, the mounting bracket can be moved downward to lock onto the lower air vent, and then the mounting bracket can be fixed to the mounting base below with fasteners). Then, by rotating the lower end cap or rotating the mounting bracket, the two can be rotated relative to each other. When rotated to the preset position, the teeth and groove can be axially moved to lock together, thereby completing the installation limiting function of the liquid reservoir.

[0099] In some embodiments, the grooves 5-2 are disposed on the axial end face of the mounting frame body 5-3 and connect with the radial inner circumference of the mounting frame body 5-3, extending from the radial inner circumference to the radial outer circumference. Multiple grooves 5-2 are arranged sequentially along the circumferential direction of the mounting frame body 5-3, and at least two teeth 9-1 are spaced apart along the circumferential direction of the end cap body 9-2. This is a preferred structural form of the grooves and teeth of the present invention. Multiple grooves connected sequentially along the circumferential direction can form a locking mechanism with the teeth, thus providing more limiting positions. Installation only requires a small rotation angle to complete the locking, making installation more convenient. Multiple teeth can improve the locking strength and enhance the limiting effect on the liquid reservoir.

[0100] In some embodiments, the mounting bracket 5 further includes a protruding mounting portion 5-4, which is disposed on the outer periphery of the mounting bracket body 5-3 and protrudes radially outward. The protruding mounting portion 5-4 has a fifth mounting hole 5-1 extending through both axial end faces, through which the mounting bracket 5 can be fixed to the mounting base. This invention allows the protruding mounting portion of the mounting bracket to have a fifth mounting hole, thereby enabling the mounting bracket to be fixed to the mounting base below using fasteners (e.g., bolts or screws), achieving the effect of fixing the liquid reservoir to the mounting base.

[0101] The present invention also provides a compressor assembly comprising a liquid reservoir with built-in error compensation as described in any of the preceding claims.

[0102] Figure 1 As shown, the liquid reservoir of the present invention is composed of an inlet pipe connector 2, an upper end cap 3, a cylinder 4, a mounting bracket 5, an outlet pipe connector 7, a second outlet pipe 8, a lower end cap 9, etc. Among them, the first inlet pipe 1 and the first outlet pipe 6 are piping components used to connect the liquid reservoir in the air conditioning system, which facilitates understanding of the liquid reservoir piping method, and are not components of the liquid reservoir.

[0103] Structural features and functions of each component unit (refer to) Figure 2 , Figure 3 The inlet connector 2 consists of a first connector pressure plate 2-1 and a first connector part 2-2. A first sealing ring 2-3 is used to achieve a seal, and a first fastener 2-4 (preferably a screw) is used to fix the first connector pressure plate to the upper end cap. The first connector part 2-2 and the upper end cap 3 are connected radially with a double sealing ring. The reservoir body consists of an upper end cap 3, a cylinder 4, a second outlet pipe 8, and a lower end cap 9, which are connected by welding. The second outlet pipe 8 and the second inlet pipe 10 have the same structure, ensuring that the inlet and outlet pipes are interchangeable, thus achieving error-proof piping of the reservoir. The lower end cap has evenly distributed teeth 9-1 on its edge, with a number ranging from 3 to 6, and 4 is recommended. These protruding toothed structures cooperate with the toothed grooves 5-2 of the mounting bracket 5 for installation and positioning. The reservoir is fixed by the elongated hole (fifth mounting hole 5-1) on the edge of the mounting bracket 5. During installation, screws are passed through the fifth mounting hole 5-1 and tightened to fix the reservoir. Typically, due to unavoidable errors and error accumulation during the processing and assembly of air conditioning system piping components, it is difficult to pipe the liquid receiver. However, by adjusting the installation angle of the liquid receiver, these errors can be compensated to a certain extent, reducing the residual stress in the piping system caused by assembly errors.

[0104] Figure 4 As shown, after the inlet pipe connector 2 and outlet pipe connector 7 are welded to the corresponding first inlet pipe 1 and first outlet pipe 6 of the system, sealing rings are installed, and the connectors are inserted into the corresponding sealing cavities of the upper end cap 3. Screws are passed through the round holes on both sides of the first connector pressure plate 2-1 and tightened into the corresponding threaded holes of the upper end cap sealing cavity to achieve the sealing function of the inlet and outlet pipe connectors. After the liquid receiver is connected to the air conditioning piping system, the refrigerant in the system flows in from the first inlet pipe 1 of the system, flows through the inlet pipe connector 2, the upper end cap 3, and the second inlet pipe 10 in sequence, enters the cylinder 4, and returns to the first outlet pipe 6 of the system through the second outlet pipe 8 and the outlet pipe connector 7, thus realizing the function of the liquid receiver.

[0105] The present invention also provides an air conditioner that includes the aforementioned compressor assembly.

[0106] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0107] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A liquid reservoir, characterized in that: include: Inlet pipe connector (2), outlet pipe connector (7) and upper end cap (3); The inlet pipe connector (2) includes a first connector pressure plate (2-1) and a first connector part (2-2). The upper end cap (3) is provided with a first receiving cavity (3-1). A portion of the first connector part (2-2) is inserted into the first receiving cavity (3-1), and the other portion extends out of the first receiving cavity (3-1) and is fixedly connected to the first inlet pipe (1). The first connector pressure plate (2-1) is sleeved on the outer periphery of the first connector part (2-2) and fixedly connected to the upper end cap (3) to limit a portion of the first connector part (2-2) in the first receiving cavity (3-1). The first connector part (2-2) and the first inlet pipe (1) form an integral structure and can rotate relative to the first connector pressure plate (2-1). And / or, the outlet pipe connector (7) includes a second connector pressure plate (7-1) and a second connector portion (7-2), the upper end cap (3) is provided with a second receiving cavity (3-2), a portion of the second connector portion (7-2) is inserted into the second receiving cavity (3-2), and the other portion extends out of the second receiving cavity (3-2) and is fixedly connected to the first outlet pipe (6), the second connector pressure plate (7-1) is sleeved on the outer periphery of the second connector portion (7-2) and fixedly connected to the upper end cap (3) to limit a portion of the second connector portion (7-2) in the second receiving cavity (3-2), the second connector portion (7-2) and the first outlet pipe (6) form an integral structure and can rotate relative to the second connector pressure plate (7-1); It also includes a cylinder (4), the upper end of which is fixedly connected to the upper end cap (3), and a lower end cap (9) and a mounting bracket (5), the lower end cap (9) being fixedly connected to the lower end of the cylinder (4); the mounting bracket (5) can also limit the circumferential position of the lower end cap (9), and the lower end cap (9) can be rotated to a preset position.

2. The liquid reservoir according to claim 1, characterized in that: The first connector (2-2) is a cylindrical structure, including a first body (2-21) and an annular first step (2-22) disposed on the outer periphery of the first body (2-21). The first step (2-22) is engaged on the upper end face of the upper end cap (3). The first connector pressure plate (2-1) has a first central hole (2-11). The first connector pressure plate (2-1) is sleeved on the first body (2-21) through the first central hole (2-11). The first connector pressure plate (2-1) and the upper end face of the first step (2-22) are engaged. The second connector (7-2) is a cylindrical structure, including a second body (7-21) and an annular second step (7-22) disposed on the outer periphery of the second body (7-21). The second step (7-22) is engaged on the upper end face of the upper end cap (3). The second connector pressure plate (7-1) has a second central hole (7-11). The second connector pressure plate (7-1) is sleeved on the second body (7-21) through the second central hole (7-11). The second connector pressure plate (7-1) engages with the upper end face of the second step (7-22).

3. The liquid reservoir according to claim 2, characterized in that: The first joint pressure plate (2-1) includes a first pressure plate body (2-12) and a first pressure plate extension (2-13). One end of the first pressure plate extension (2-13) is connected to the edge of the first pressure plate body (2-12) and the other end extends downward to form a downward-facing first inner step (2-14). The first inner step (2-14) and the upper end face of the first step (2-22) are engaged to surround the first step (2-22) inside the first pressure plate extension (2-13). The second joint pressure plate (7-1) includes a second pressure plate body (7-12) and a second pressure plate extension (7-13). One end of the second pressure plate extension (7-13) is connected to the edge of the second pressure plate body (7-12) and the other end extends downward to form a downward-facing second inner step (7-14). The second inner step (7-14) and the upper end face of the second step (7-22) are engaged to surround the second step (7-22) inside the second pressure plate extension (7-13).

4. The liquid reservoir according to claim 3, characterized in that: The first connector pressure plate (2-1) is provided with at least one first mounting hole (2-5), the upper end cap (3) is provided with at least one second mounting hole (3-3), and the liquid reservoir further includes a first fastener (2-4). The first mounting hole (2-5) and the second mounting hole (3-3) are arranged opposite to each other. The first fastener (2-4) passes through both the first mounting hole (2-5) and the second mounting hole (3-3) to form a fixed connection between the first connector pressure plate (2-1) and the upper end cap (3). The second connector pressure plate (7-1) is provided with at least one third mounting hole (7-5), and the upper end cap (3) is provided with at least one fourth mounting hole (3-4). The liquid reservoir also includes a second fastener (7-4). The third mounting hole (7-5) and the fourth mounting hole (3-4) are arranged opposite to each other. The second fastener (7-4) passes through both the third mounting hole (7-5) and the fourth mounting hole (3-4) to form a fixed connection between the second connector pressure plate (7-1) and the upper end cap (3).

5. The liquid reservoir according to claim 4, characterized in that: The first mounting hole (2-5) is provided to penetrate the upper and lower end faces of the first pressure plate body (2-12); there are two first mounting holes (2-5), and they are symmetrically arranged with respect to the first central hole (2-11); The third mounting hole (7-5) is provided to penetrate the upper and lower end faces of the second pressure plate body (7-12); there are two third mounting holes (7-5), and they are symmetrically arranged relative to the second center hole (7-11).

6. The liquid reservoir according to claim 2, characterized in that: The shaft segment of the first body (2-21) located at the lower part of the first step (2-22) is the first shaft segment. The first shaft segment is inserted into the first receiving cavity (3-1), and a first sealing ring (2-3) is also sleeved on the outer periphery of the first shaft segment. The shaft segment of the second body (7-21) located at the lower part of the second step (7-22) is the second shaft segment. The second shaft segment is inserted into the second receiving cavity (3-2), and a second sealing ring (7-3) is also sleeved on the outer periphery of the second shaft segment.

7. The liquid reservoir according to claim 6, characterized in that: A first annular groove (2-23) is provided on the outer periphery of the first shaft segment, and the first sealing ring (2-3) is engaged in the first annular groove (2-23); and there are at least two first annular grooves (2-23) arranged along the axial direction of the first shaft segment, and there are also at least two first sealing rings (2-3), and the first sealing rings (2-3) are provided in a one-to-one correspondence with the first annular grooves (2-23); A second annular groove (7-23) is provided on the outer periphery of the second shaft segment, and the second sealing ring (7-3) is engaged in the second annular groove (7-23); and at least two of the second annular grooves (7-23) are arranged along the axial direction of the second shaft segment, and at least two of the second sealing rings (7-3) are also provided, and the second sealing rings (7-3) and the second annular grooves (7-23) are arranged in a one-to-one correspondence.

8. The reservoir according to any one of claims 1-7, characterized in that: The first connector (2-2) has a third central hole (2-24) penetrating its upper and lower end faces. The third central hole (2-24) communicates with the first receiving cavity (3-1). The first inlet tube (1) is inserted into the third central hole (2-24) from the upper end of the first connector (2-2). The second connector (7-2) has a fourth central hole (7-24) penetrating its upper and lower end faces. The fourth central hole (7-24) communicates with the second receiving cavity (3-2). The first outlet tube (6) is inserted into the fourth central hole (7-24) from the upper end of the second connector (7-2).

9. The liquid reservoir according to claim 8, characterized in that: The first inlet tube (1) is press-fitted or welded to the third center hole (2-24) to form a fixed connection between the first inlet tube (1) and the first connector (2-2); The first outlet tube (6) is press-fitted or welded to the fourth center hole (7-24) to form a fixed connection between the first outlet tube (6) and the second connector (7-2).

10. The reservoir according to any one of claims 1-7, characterized in that: It also includes a second inlet pipe (10) and a second outlet pipe (8). The upper end of the second inlet pipe (10) is fixed to the upper end cap (3), and the lower end extends into the interior of the cylinder (4). The upper end of the second inlet pipe (10) can communicate with the first inlet pipe (1). The upper end of the second outlet pipe (8) is fixed to the upper end cap (3), and the lower end extends into the interior of the cylinder (4). The upper end of the second outlet pipe (8) can communicate with the first outlet pipe (6).

11. The liquid reservoir according to claim 10, characterized in that: The upper end cap (3) is also provided with a first hole (3-5) and a second hole (3-6). The first receiving cavity (3-1) and the second receiving cavity (3-2) are both sink structures. The first hole (3-5) is located at the lower end of the first receiving cavity (3-1) and the upper end of the first hole (3-5) is connected to the first receiving cavity (3-1). The lower end of the first hole (3-5) is connected to the inner cavity of the cylinder (4). The upper end of the second inlet pipe (10) passes through the first hole (3-5). The second hole (3-6) is located at the lower end of the second receiving cavity (3-2) and the upper end of the second hole (3-6) is connected to the second receiving cavity (3-2). The lower end of the second hole (3-6) is connected to the inner cavity of the cylinder (4). The upper end of the second outlet pipe (8) passes through the second hole (3-6).

12. The liquid reservoir according to claim 10, characterized in that: The second inlet pipe (10) and the second outlet pipe (8) have the same structure and are inserted into the inner cavity of the cylinder (4) to the same depth. The first inlet pipe (1) and the first outlet pipe (6) have the same structure.

13. The liquid reservoir according to claim 10, characterized in that: The mounting bracket (5) is connected to the lower end cap (9) and can fix the lower end cap (9) to the mounting base at the lower end of the liquid reservoir.

14. The liquid reservoir according to claim 13, characterized in that: The lower end cap (9) includes an end cap body (9-2) and a toothed part (9-1). The end cap body (9-2) is a disc-shaped structure and the toothed part (9-1) is located on the outer periphery of the end cap body (9-2) and protrudes radially outward. The mounting frame (5) includes a mounting frame body (5-3) and a toothed groove (5-2). The mounting frame body (5-3) is an annular structure and the toothed groove (5-2) is a groove located on one side of the axial end face of the mounting frame body (5-3). The toothed groove (5-2) is opposite to the toothed part (9-1). The lower end cap (9) can rotate to a preset position and move along the axial direction of the cylinder (4) so ​​that the toothed part (9-1) and the toothed groove (5-2) are engaged, thereby forming a circumferential limit between the lower end cap (9) and the mounting frame (5).

15. The liquid reservoir according to claim 14, characterized in that: The toothed groove (5-2) is disposed on the axial end face of the mounting frame body (5-3) and is connected to the radial inner circumference of the mounting frame body (5-3), and extends from the radial inner circumference to the radial outer circumference. There are multiple toothed grooves (5-2) and they are arranged sequentially connected along the circumferential direction of the mounting frame body (5-3). There are at least two teeth (9-1) and they are spaced apart along the circumferential direction of the end cap body (9-2).

16. The liquid reservoir according to claim 14, characterized in that: The mounting bracket (5) further includes a protruding mounting portion (5-4), which is disposed on the outer periphery of the mounting bracket body (5-3) and protrudes radially outward. A fifth mounting hole (5-1) is provided on the protruding mounting portion (5-4) in the form of penetrating both axial end faces. The mounting bracket (5) can be fixed to the mounting base through the fifth mounting hole (5-1).

17. A compressor assembly, characterized in that: The reservoir includes any one of claims 1-16.

18. An air conditioner, characterized in that: Includes the compressor assembly as described in claim 17.

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