Multifunctional all-in-one device for air conditioning system

Abstract

A gas-liquid separation unit comprises an inner shell, a U-shaped pipe and a bent pipe, a gas-liquid separation space is defined by the inner shell, the bent pipe is arranged on the inner shell and communicated with the gas-liquid separation space, the U-shaped pipe is arranged in the gas-liquid separation space, the U-shaped pipe is provided with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are communicated with the bent pipe. The gas inlet is located in the gas-liquid separation space, the gas outlet extends out of the gas-liquid separation space, the gas-liquid separation unit is sleeved with the liquid storage unit, the liquid storage unit and the gas-liquid separation unit form a liquid storage space, the liquid storage unit comprises an outer shell, a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are arranged on the outer shell and communicated with the liquid storage space. The U-shaped pipe and the bent pipe form an independent gas-liquid separation unit, the liquid inlet pipe and the liquid outlet pipe form an independent liquid storage unit, and the gas-liquid separation unit is sleeved with the liquid storage unit, so that connecting pipelines and valves are omitted, the space occupation ratio is reduced, heat exchange of refrigerants in the liquid storage space and the gas-liquid separation space can be achieved, and the refrigeration efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-liquid separation, and in particular relates to a multifunctional all-in-one device for an air-conditioning system. Background Art

[0002] The gas-liquid separator is installed at the inlet and outlet of the gas compressor for gas-liquid separation. It can also be used in various industrial and civil applications such as gas dust removal, oil-water separation, and liquid impurity removal. The role of the gas-liquid separator in the refrigeration system is to separate the liquid refrigerant that has not evaporated completely from the evaporator to prevent the liquid refrigerant from entering the compressor and damaging the compressor. The role of the liquid receiver is to store the condensed liquid Freon and act as a buffer.

[0003] In the existing refrigeration system, the gas-liquid separation unit and the liquid storage unit are separately arranged and connected through connecting pipes and valves, which takes up a large space. In addition, the gas-liquid separation unit and the liquid storage unit occupy certain resources in the refrigeration system and operate independently, thereby affecting the refrigeration efficiency. Therefore, improvement is urgently needed. Utility Model Content

[0004] The purpose of the present utility model is to solve the above-mentioned technical problems existing in the prior art, and to provide a multifunctional all-in-one device for an air-conditioning system, in which a separate gas-liquid separation unit is formed by a U-shaped tube and a bent tube, a separate liquid storage unit is formed by a liquid inlet pipe and a liquid outlet pipe, and the liquid storage unit is arranged outside the gas-liquid separation unit, which saves the setting of connecting pipes and valves, thereby reducing the space occupied, and at the same time can also realize heat exchange of refrigerant between the liquid storage space and the gas-liquid separation space, thereby increasing the cooling efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A multifunctional all-in-one device for an air conditioning system, characterized in that it includes a gas-liquid separation unit, the gas-liquid separation unit including an inner shell, a U-shaped tube, and an elbow, the inner shell enclosing a gas-liquid separation space, the elbow being mounted on the inner shell and communicating with the gas-liquid separation space, the U-shaped tube being mounted in the gas-liquid separation space, one end of the U-shaped tube being provided with an air inlet, the air inlet being located in the gas-liquid separation space, and the other end of the U-shaped tube being provided with an air outlet, the air outlet extending out of the gas-liquid separation space;

[0007] The liquid storage unit is sleeved on the outside of the gas-liquid separation unit to form a liquid storage space with the gas-liquid separation unit. The liquid storage unit includes an outer shell, a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe and the liquid outlet pipe are both arranged on the outer shell and connected to the liquid storage space.

[0008] A separate gas-liquid separation unit is formed by a U-shaped tube and a bent tube, a separate liquid storage unit is formed by a liquid inlet pipe and a liquid outlet pipe, and the liquid storage unit is arranged outside the gas-liquid separation unit, which saves the setting of connecting pipes and valves, thereby reducing the space occupied, and at the same time can also realize heat exchange between the refrigerant in the liquid storage space and the gas-liquid separation space, thereby increasing the cooling efficiency.

[0009] Furthermore, the liquid storage unit is sleeved on the side of the gas-liquid separation unit to completely wrap the side of the gas-liquid separation unit, or the liquid storage unit is sleeved on the bottom of the gas-liquid separation unit to wrap the bottom and side of the gas-liquid separation unit, so that the side of the gas-liquid separation unit is exposed.

[0010] Furthermore, the inner shell includes an upper end cover, a shell body and a lower end cover, and the upper end cover, the shell body and the lower end cover together form a gas-liquid separation space.

[0011] Furthermore, the upper end cover and the lower end cover are provided with a first connection part 1, and the two ends of the shell body are provided with a first connection part 2 corresponding to the first connection part 1. The first connection part 1 and the first connection part 2 clamp the two ends of the outer shell body, and the shell body is concave inward to form a contraction part 1, and the outer shell body and the contraction part 1 form a liquid storage space.

[0012] Furthermore, the upper end cover and the lower end cover are provided with a second connection part 1, and the two ends of the shell body are provided with a second connection part 2 corresponding to the second connection part 1, and the two ends of the outer shell body are provided with a second connection part 3. The second connection part 1 and the second connection part 2 clamp the second connection part 3, the shell body is concave inward to form a contraction part 2, and the outer shell body protrudes outward to form a flared part 1, and the contraction part 2 and the flared part 1 form a liquid storage space.

[0013] Furthermore, the upper end cover and the lower end cover are provided with a third connecting part, the two ends of the outer shell are inserted into the upper end cover and the lower end cover and connected to the third connecting part, a partition is provided between the outer shell and the shell body, and a liquid storage space is formed between the outer shell, the shell body and the partition.

[0014] Furthermore, the upper end cover and the lower end cover are provided with a fourth connecting part 1, the two ends of the shell body are inserted into the upper end cover and the lower end cover and connected to the fourth connecting part 1, and the two ends of the outer shell body are provided with a fourth connecting part 2. The outer shell body is sleeved on the outside of the shell body through the fourth connecting part 2. The outer shell body protrudes outward to form a flared part 2, and the flared part 2 and the shell body form a liquid storage space.

[0015] Furthermore, the upper end cover is provided with a fifth connecting part 1, the shell body includes an enclosing part and an exposed part, the enclosing part, the exposed part and the lower end cover are integrally formed, the shell body is inserted into the upper end cover through the exposed part and is connected to the fifth connecting part 1, the outer shell body is provided with a fifth connecting part 2, the fifth connecting part 2 is connected to the shell body, the outer shell body is U-shaped, the U-shaped outer shell body is sleeved on the lower end cover and the enclosing part, and the outer shell body, the lower end cover and the enclosing part enclose a liquid storage space.

[0016] Furthermore, it also includes a support base, which is used to support the liquid storage unit and the gas-liquid separation unit.

[0017] Furthermore, rubber plugs are installed in the bent pipe and the U-shaped pipe, the U-shaped pipe is provided with an oil return hole and a pressure equalizing hole, and a filter assembly is installed in the oil return hole.

[0018] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0019] The U-shaped tube is provided with an air inlet at one end, and the air inlet is located in the air-liquid separation space, and the other end of the U-shaped tube is provided with an air outlet, and the air outlet extends out of the air-liquid separation space. The liquid storage unit is sleeved on the outside of the gas-liquid separation unit to form a liquid storage space with the gas-liquid separation unit. The liquid storage unit includes an outer shell, a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are both arranged on the outer shell and connected to the liquid storage space. A separate gas-liquid separation unit is formed by the U-shaped tube and the elbow, and a separate liquid storage unit is formed by the liquid inlet pipe and the liquid outlet pipe, and the liquid storage unit is sleeved outside the gas-liquid separation unit, which saves the setting of connecting pipes and valves, thereby reducing space occupation, and can also realize heat exchange between the liquid storage space and the refrigerant in the gas-liquid separation space, thereby increasing refrigeration efficiency.

[0020] In the present invention, the low-temperature two-phase refrigerant flows into the gas-liquid separation space through the bent pipe, and the high-temperature liquid refrigerant flows into the liquid storage space through the liquid inlet pipe. The high-temperature liquid refrigerant in the liquid storage space heats the low-temperature two-phase refrigerant in the gas-liquid separation space, so that the high-temperature liquid refrigerant and the low-temperature two-phase refrigerant achieve heat exchange, thereby separating the low-temperature two-phase refrigerant into gas and liquid, and the gas enters the U-shaped tube through the air outlet and flows out through the air outlet. Through the combined design of the liquid storage unit and the gas-liquid separation unit, the utility model can simultaneously have the gas-liquid separation function, the liquid storage function and the heat exchange function, thereby increasing the gas-liquid separation rate and thus increasing the refrigeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a structural diagram of a first embodiment of a multifunctional all-in-one device for an air conditioning system according to the present invention;

[0023] Figure 2 For this utility model Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 This is a structural diagram of a second embodiment of a multifunctional all-in-one device for an air conditioning system according to the present invention;

[0025] Figure 4 For this utility model Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 5 This is a structural diagram of a third embodiment of a multifunctional all-in-one device for an air conditioning system according to the present invention;

[0027] Figure 6 For this utility model Figure 5 A partial enlarged view of point C in the middle;

[0028] Figure 7 This is a structural diagram of a fourth embodiment of a multifunctional all-in-one device for an air conditioning system according to the present utility model;

[0029] Figure 8 For this utility model Figure 7 A partial enlarged view of point D in the middle;

[0030] Figure 9 This is a structural diagram of a fifth embodiment of a multifunctional all-in-one device for an air conditioning system according to the present invention;

[0031] Figure 10 This is a structural diagram of a sixth embodiment of a multifunctional all-in-one device for an air conditioning system according to the present utility model;

[0032] In the figure: 1-gas-liquid separation unit; 2-liquid storage unit; 3-inner shell; 4-U-shaped tube; 5-elbow tube; 6-gas-liquid separation space; 7-air inlet; 8-air outlet; 9-liquid storage space; 10-outer shell; 11-liquid inlet pipe; 12-liquid outlet pipe; 13-upper end cover; 14-shell; 15-lower end cover; 16-first connecting part 1; 17-first connecting part 2; 18-contraction part 1; 19-second connecting part 1; 20- Second connection part 2; 21-second connection part 3; 22-contraction part 2; 23-expansion part 1; 24-third connection part; 25-partition; 26-fourth connection part 1; 27-fourth connection part 2; 28-expansion part 2; 29-fifth connection part 1; 30-enclosed part; 31-exposed part; 32-fifth connection part 2; 33-support seat; 34-rubber plug; 35-filter assembly; 36-oil return hole; 37-pressure equalizing hole. DETAILED DESCRIPTION

[0033] Example 1

[0034] like Figures 1 to 2As shown, the utility model is a multifunctional all-in-one device for an air-conditioning system, comprising a gas-liquid separation unit 1, a liquid storage unit 2 and a support seat 33. In this embodiment, the gas-liquid separation unit 1 is installed on the support seat 33, and the liquid storage unit 2 is sleeved on the outside of the gas-liquid separation unit 1, and a liquid storage space 9 is formed between the gas-liquid separation unit 1 and the liquid storage unit 2. Specifically, when the liquid storage unit 2 is sleeved on the gas-liquid separation unit 1, it can be sleeved on the side of the gas-liquid separation unit 1 to completely wrap the side of the gas-liquid separation unit 1, or the liquid storage unit 2 is sleeved on the bottom surface of the gas-liquid separation unit 1 to wrap the bottom surface and part of the side surface of the gas-liquid separation unit 1, so that the side surface of another part of the gas-liquid separation unit 1 is exposed.

[0035] The gas-liquid separation unit 1 includes an inner shell 3, a U-shaped tube 4 and a bend 5. The inner shell 3 includes an upper end cover 13, a shell body 14 and a lower end cover 15. The upper end cover 13, the shell body 14 and the lower end cover 15 are connected by welding. The upper end cover 13, the shell body 14 and the lower end cover 15 are surrounded by a gas-liquid separation space 6. The bend 5 is installed on the inner shell 3. The bend 5 is connected to the gas-liquid separation space 6. The U-shaped tube 4 is installed in the gas-liquid separation space 6. An air inlet 7 is provided at one end of the U-shaped tube 4. The air inlet 7 is located in the gas-liquid separation space 6. An air outlet 8 is provided at the other end of the U-shaped tube 4. The air outlet 8 extends out of the gas-liquid separation space 6. At one end of the bend 5 extending out of the gas-liquid separation space 6 and the U A rubber plug 34 is installed in the air outlet 8 of the U-shaped tube 4. Nitrogen is filled into the gas-liquid separation space 6 when the device leaves the factory. The gas-liquid separation space 6 can be sealed by the setting of the rubber plug 34 to play a protective role. An oil return hole 36 and a pressure equalizing hole 37 are provided in the U-shaped tube 4. The setting of the oil return hole 36 can ensure the return of the separated oil to the compressor as much as possible, and can also ensure that the refrigerant oil can return to the compressor as much as possible. A filter assembly 35 is installed in the oil return hole 36 to block impurities. The setting of the pressure equalizing hole 37 can prevent the liquid accumulated in the gas-liquid separation space 6 from being sucked into the U-shaped tube 4 and the compressor through the oil return hole 36 during the period of stopping the compressor.

[0036] The liquid storage unit 2 includes an outer shell 10, a liquid inlet pipe 11 and a liquid outlet pipe 12. The liquid inlet pipe 11 and the liquid outlet pipe 12 are both arranged on the outer shell 10 and connected to the liquid storage space 9. The liquid inlet pipe 11 is located at the upper part of the outer shell 10, and the liquid outlet pipe 12 is located at the lower part of the outer shell 10, which is convenient for liquid inlet from the upper part and liquid outlet from the lower part.

[0037] The utility model forms a separate gas-liquid separation unit 1 through the U-shaped tube 4 and the bent tube 5, forms a separate liquid storage unit 2 through the liquid inlet pipe 11 and the liquid outlet pipe 12, and the liquid storage unit 2 is arranged outside the gas-liquid separation unit 1, saving the setting of connecting pipes and valves, thereby reducing the space occupied, and at the same time can also realize heat exchange between the refrigerant in the liquid storage space 9 and the gas-liquid separation space 6, thereby increasing the refrigeration efficiency.

[0038] In this embodiment, the upper end cover 13 and the lower end cover 15 are provided with a first connection part 16, and the two ends of the shell body 14 are provided with a first connection part 17 corresponding to the first connection part 16. The first connection part 16 and the first connection part 17 clamp the two ends of the outer shell 10, and the first connection part 16, the first connection part 2 17 and the two ends of the outer shell 10 are welded and fixed, thereby realizing the welding fixation between the liquid storage unit 2 and the gas-liquid separation unit 1, and the shell body 14 is recessed inward to form a contraction part 18, and the outer shell 10 and the contraction part 18 form a liquid storage space 9.

[0039] In the present invention, the low-temperature two-phase refrigerant flows into the gas-liquid separation space 6 through the bent pipe 5, and the high-temperature liquid refrigerant flows into the liquid storage space 9 through the liquid inlet pipe 11. The high-temperature liquid refrigerant in the liquid storage space 9 heats the low-temperature two-phase refrigerant in the gas-liquid separation space 6, so that the high-temperature liquid refrigerant and the low-temperature two-phase refrigerant achieve heat exchange, thereby separating the low-temperature two-phase refrigerant into gas and liquid. The gas enters the U-shaped tube 4 through the air inlet 7 and flows out through the air outlet 8. Through the combined design of the liquid storage unit 2 and the gas-liquid separation unit 1, the utility model can simultaneously have the gas-liquid separation function, the liquid storage function and the heat exchange function, thereby increasing the gas-liquid separation rate and thus increasing the refrigeration efficiency.

[0040] When the utility model is in use, it is connected to the evaporator through the bent pipe 5, one end of the air outlet 8 of the U-shaped tube 4 is connected to the compressor, and the liquid inlet pipe 11 is connected to the condenser. The low-temperature two-phase refrigerant generated by the evaporator enters the gas-liquid separation space 6 through the bent pipe 5, and the high-temperature liquid refrigerant is input into the liquid storage space 9 through the liquid inlet pipe 11. Since the liquid storage space 9 is arranged outside the gas-liquid separation space 6, the high-temperature liquid refrigerant and the low-temperature two-phase refrigerant exchange heat, thereby heating the low-temperature two-phase refrigerant to perform gas-liquid separation. The separated gas enters the compressor through the U-shaped tube 4, effectively combining the existing gas-liquid separator and liquid storage, saving production costs, labor and materials, saving space, and increasing refrigeration efficiency.

[0041] In the present invention, the volume of the liquid storage space 9 is 1-20L, the volume of the gas-liquid separation space 6 is 1-25L, the wall thickness of the liquid storage unit 2 and the gas-liquid separation unit 1 are both 1.5-6mm, and are made of carbon steel or stainless steel. The liquid inlet pipe 11 and the liquid outlet pipe 12 can be connected to the outer shell 10 through a joint transition, or by punching or flanging holes on the outer shell 10, and the liquid inlet pipe 11 and the liquid outlet pipe 12 are welded to the holes of the outer shell 10. The layout of the liquid inlet pipe 11 and the liquid outlet pipe 12 can be arranged at any angle, and the height can be horizontal or set in a top-in and bottom-out manner.

[0042] Example 2

[0043] like Figures 3 and 4As shown, based on the structure of embodiment one, embodiment two makes another design for the sleeve arrangement of the liquid storage unit 2 and the gas-liquid separation unit 1, the upper end cover 13 and the lower end cover 15 are provided with a second connection part 19, and the two ends of the shell body 14 are provided with a second connection part 20 corresponding to the second connection part 19, and the two ends of the outer shell 10 are provided with a second connection part 3 21, the second connection part 19 and the second connection part 20 clamp the second connection part 3 21, and the second connection part 19, the second connection part 20 and the second connection part 3 21 are welded and fixed to realize the welding fixation of the liquid storage unit 2 and the gas-liquid separation unit 1, the shell body 14 is recessed inward to form a contraction part 22, and the outer shell 10 protrudes outward to form a flaring part 1 23, and the contraction part 22 and the flaring part 1 23 form a liquid storage space 9. Through the design of the contraction part 22 and the flaring part 1 23, the volume of the liquid storage space 9 is increased, thereby increasing the refrigeration efficiency.

[0044] Example 3

[0045] like Figures 5 and 6 As shown, based on the structure of embodiment one, embodiment three makes another design for the arrangement of the liquid storage unit 2 and the gas-liquid separation unit 1, the upper end cover 13 and the lower end cover 15 are provided with a third connecting portion 24, both ends of the outer shell 10 are inserted into the upper end cover 13 and the lower end cover 15 and connected to the third connecting portion 24, a partition 25 is provided between the outer shell 10 and the shell body 14, and a liquid storage space 9 is formed between the outer shell 10, the shell body 14 and the partition 25. In this embodiment, the upper end cover 13 and the lower end cover 15 are both welded and fixed to the outer shell 10, the shell body 14 is connected to the outer shell 10 through the partition 25, and the partition 25 can block the gas-liquid separation space 6 from the liquid storage space 9.

[0046] Example 4

[0047] like Figures 7 and 8 As shown, based on the structure of embodiment one, embodiment four makes another design for the sleeve arrangement of the liquid storage unit 2 and the gas-liquid separation unit 1, the upper end cover 13 and the lower end cover 15 are provided with a fourth connecting portion 1 26, the two ends of the shell body 14 are inserted into the upper end cover 13 and the lower end cover 15 and connected to the fourth connecting portion 1 26, and the two ends of the outer shell 10 are provided with a fourth connecting portion 27, the outer shell 10 is sleeved on the outside of the shell body 14 through the fourth connecting portion 27, the outer shell 10 protrudes outward to form a flared portion 28, and the flared portion 28 and the shell body 14 form a liquid storage space 9. In this embodiment, the upper end cover 13 and the lower end cover 15 are welded and fixed to the shell body 14 of the inner shell 3, the outer shell 10 is provided with a fourth connecting portion 27, the outer shell 10 is welded to the shell body 14 through the fourth connecting portion 27, and the end of the fourth connecting portion 27 is welded and fixed to the upper end cover 13 and the lower end cover 15. This design facilitates the welding and fixation of the liquid storage unit 2 and the gas-liquid separation unit 1.

[0048] Example 5

[0049] like Figure 9 As shown, based on the structure of embodiment one, embodiment five makes another design for the arrangement of the liquid storage unit 2 and the gas-liquid separation unit 1, the upper end cover 13 is provided with a fifth connecting part 1 29, the shell body 14 includes an enclosing part 30 and a naked part 31, the enclosing part 30, the naked part 31 and the lower end cover 15 are integrally formed, the shell body 14 is inserted into the upper end cover 13 through the naked part 31 and is welded and fixedly connected with the fifth connecting part 1 29, the outer shell 10 is provided with a fifth connecting part 2 32, the fifth connecting part 2 32 is welded and fixedly connected with the shell body 14, the outer shell 10 is U-shaped, the U-shaped outer shell 10 is arranged on the lower end cover 15 and the enclosing part 30, the outer shell 10, the lower end cover 15 and the enclosing part 30 enclose a liquid storage space 9, because the low-temperature two-phase refrigerant enters the gas-liquid separation space 6 and is located at the bottom of the gas-liquid separation space 6, through this design, the high-temperature refrigerant in the liquid storage space 9 can better heat the low-temperature two-phase refrigerant in the gas-liquid separation space 6, thereby increasing the refrigeration efficiency.

[0050] In this embodiment, the liquid storage unit 2 is mounted on the support base 33 .

[0051] Example 6

[0052] like Figure 10 As shown, based on the structure of the fifth embodiment, the sixth embodiment makes another design for the liquid outlet pipe 12. In this embodiment, the liquid inlet pipe 11 is installed at the top of the side of the outer shell 10, but the liquid outlet pipe 12 is installed at the bottom of the outer shell 10 to facilitate better outflow of the refrigerant.

[0053] In this embodiment, the liquid storage unit 2 is mounted on the support base 33 .

[0054] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A multifunctional all-in-one device for an air conditioning system, characterized in that: include A gas-liquid separation unit, comprising an inner shell, a U-shaped tube, and an elbow, wherein the inner shell encloses a gas-liquid separation space, the elbow being mounted on the inner shell and communicating with the gas-liquid separation space, the U-shaped tube being mounted in the gas-liquid separation space, an air inlet being provided at one end of the U-shaped tube, the air inlet being located in the gas-liquid separation space, and an air outlet being provided at the other end of the U-shaped tube, the air outlet extending out of the gas-liquid separation space; A liquid storage unit is arranged on the outside of the gas-liquid separation unit to form a liquid storage space with the gas-liquid separation unit. The liquid storage unit includes an outer shell, a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe and the liquid outlet pipe are both arranged on the outer shell and connected to the liquid storage space.

2. The multifunctional all-in-one device for an air conditioning system according to claim 1, characterized in that: The liquid storage unit is sleeved on the side of the gas-liquid separation unit to completely wrap the side of the gas-liquid separation unit, or the liquid storage unit is sleeved on the bottom of the gas-liquid separation unit to wrap the bottom and side of the gas-liquid separation unit, so that the side of the gas-liquid separation unit is exposed.

3. The multifunctional all-in-one device for an air conditioning system according to claim 2, characterized in that: The inner shell includes an upper end cover, a shell body and a lower end cover, and the upper end cover, the shell body and the lower end cover together form the gas-liquid separation space.

4. The multifunctional all-in-one device for an air conditioning system according to claim 3, characterized in that: The upper end cover and the lower end cover are provided with a first connecting part 1, and the two ends of the shell body are provided with a first connecting part 2 corresponding to the first connecting part 1. The first connecting part 1 and the first connecting part 2 clamp the two ends of the outer shell body, and the shell body is recessed inward to form a contraction part 1, and the outer shell body and the contraction part 1 form the liquid storage space.

5. The multifunctional all-in-one device for an air conditioning system according to claim 3, characterized in that: The upper end cover and the lower end cover are provided with a second connecting part 1, and the two ends of the shell body are provided with a second connecting part 2 corresponding to the second connecting part 1, and the two ends of the outer shell body are provided with a second connecting part 3, and the second connecting part 1 and the second connecting part 2 clamp the second connecting part 3. The shell body is concave inward to form a contraction part 2, and the outer shell body is convex outward to form a flared part 1, and the contraction part 2 and the flared part 1 form the liquid storage space.

6. The multifunctional all-in-one device for an air conditioning system according to claim 3, characterized in that: The upper end cover and the lower end cover are provided with a third connecting part, the two ends of the outer shell are inserted into the upper end cover and the lower end cover and connected to the third connecting part, a partition is provided between the outer shell and the shell body, and the liquid storage space is formed between the outer shell, the shell body and the partition.

7. The multifunctional all-in-one device for an air conditioning system according to claim 3, characterized in that: The upper end cover and the lower end cover are provided with a fourth connecting part 1, the two ends of the shell body are inserted into the upper end cover and the lower end cover and connected to the fourth connecting part 1, the two ends of the outer shell body are provided with a fourth connecting part 2, the outer shell body is sleeved on the outside of the shell body through the fourth connecting part 2, the outer shell body protrudes outward to form a flared part 2, and the flared part 2 and the shell body form the liquid storage space.

8. The multifunctional all-in-one device for an air conditioning system according to claim 3, characterized in that: The upper end cover is provided with a fifth connecting part 1, and the shell body includes an enclosing part and an exposed part. The enclosing part, the exposed part and the lower end cover are integrally formed. The shell body is inserted into the upper end cover through the exposed part and is connected to the fifth connecting part 1. The outer shell body is provided with a fifth connecting part 2, and the fifth connecting part 2 is connected to the shell body. The outer shell body is U-shaped, and the U-shaped outer shell body is sleeved on the lower end cover and the enclosing part. The outer shell body, the lower end cover and the enclosing part enclose together to form the liquid storage space.

9. The multifunctional all-in-one device for an air conditioning system according to claim 1, characterized in that: It also includes a support base, which is used to support the liquid storage unit and the gas-liquid separation unit.

10. The multifunctional all-in-one device for an air conditioning system according to claim 1, characterized in that: Rubber plugs are installed in the bent pipe and the U-shaped pipe. The U-shaped pipe is provided with an oil return hole and a pressure equalizing hole. A filter assembly is installed in the oil return hole.

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