An automated gas collection apparatus for a refrigerant filling plant

By modularly connecting compression, filtration, cooling, and storage devices, the problems of cumbersome processes and poor safety in traditional refrigerant filling workshop gas collection equipment are solved, achieving efficient and safe gas collection and storage.

CN224301823UActive Publication Date: 2026-05-29JIANGSU KAIMI KESI CHEMICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU KAIMI KESI CHEMICAL CO LTD
Filing Date
2025-07-17
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional refrigerant filling workshop gas collection equipment suffers from problems such as cumbersome processes, lack of integrated design, insufficient filtration accuracy, and poor storage safety, resulting in low gas transmission efficiency, poor quality, and safety hazards.

Method used

An automated gas collection device was designed, which connects compression, filtration, cooling and storage devices in a modular manner. It adopts HEPA filter cartridge filtration, U-tube cooling and multi-layer storage tank structure to achieve efficient filtration, cooling and safe storage of gas.

Benefits of technology

It improves gas collection efficiency, ensures gas purity and safety, reduces equipment maintenance costs, and extends service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of automatic gas collection equipment of refrigerant filling workshop, to solve the problem that refrigerant filling workshop is difficult to automate gas collection, equipment is composed of conduit, compression device, filter device, cooling device and storage tank etc.;Compression device is driven piston by motor, realize gas compression;Filter device uses HEPA filter element, ensure gas purity, and filter element can be conveniently disassembled replacement;Cooling device utilizes U-shaped tube and condensing agent rapid cooling;Storage tank uses the multilayer structure of concrete outer bottle body, argon interlayer and stainless steel inner bag, and pressure gauge is monitored in real time with pressure, and the equipment is integrated design, and coherently complete gas compression, filtration, cooling and storage process, reduce leakage risk;High-precision filtration guarantees gas quality;Efficient cooling reduces energy consumption;Multilayer storage tank structure enhances security;Compared with traditional equipment, the present application significantly improves gas collection efficiency and security.
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Description

Technical Field

[0001] This utility model relates to the field of gas collection, and in particular to an automated gas collection device for a refrigerant filling workshop. Background Technology

[0002] Traditional refrigerant filling workshops often employ manual or semi-automated gas collection equipment, resulting in cumbersome processes that require different machines to perform vacuuming, filling, and recovery operations, with time-consuming manual equipment switching. The lack of integrated design in gas compression, filtration, cooling, and storage leads to low gas transmission efficiency. Insufficient filtration precision during gas processing fails to effectively remove harmful impurities, affecting gas quality and subsequent safety. High-temperature compressed gases are difficult to cool quickly to suitable storage temperatures, increasing the load on storage equipment and posing safety hazards. Storage tanks often use single-layer or simple structures with poor thermal insulation and chemical stability, failing to meet the requirements for long-term safe gas storage. Therefore, a compact, functionally integrated, safe, reliable, and easy-to-maintain automated gas collection device is needed to improve the overall efficiency and safety of gas collection and storage. Utility Model Content

[0003] The main purpose of this invention is to propose an automated gas collection device for refrigerant filling workshops, aiming to solve the problem of integrated automated gas collection in refrigerant filling workshops.

[0004] To address the aforementioned problems, this utility model proposes an automated gas collection device for a refrigerant filling workshop, comprising a conduit, a compression device, a compression device base, a filter, a cooling device, a collection pipe, a storage tank, and a storage tank base. Conduits are provided on both the left and right sides of the compression device, and a compression device base is located below the compression device. A filter device is connected to the end of the conduit on the right side of the compression device, and a conduit is also provided on the right side of the filter device. A cooling device is connected to the end of the conduit on the right side of the cooling device, and a collection pipe is located on the right side of the cooling device. A storage tank is located below the collection pipe, and a storage tank base is located below the storage tank.

[0005] In one embodiment, the compression device has a gas compression chamber inside, an inlet valve and an outlet valve are provided on both sides above the gas compression chamber, a piston is provided inside the gas compression chamber, a connecting rod is connected to the lower end of the piston, and a motor is provided below the gas compression chamber, and the motor is connected to the piston through the connecting rod.

[0006] In one embodiment, the filter device has a filter chamber inside, a support rod is provided inside the filter chamber, a filter element is provided inside the filter chamber and outside the support rod, a support plate is connected to the lower end of the support rod and passes through the filter element, a sealing cover is fixedly connected to the upper part of the support rod, and an air inlet and an air outlet are respectively provided on the two sides outside the filter chamber.

[0007] In one embodiment, a threaded hole is provided at the center of the support plate, and a thread is provided at the bottom outer side of the support rod, and the support plate is screwed to the lower end of the support rod by the thread.

[0008] In one embodiment, the cooling device has a plurality of U-shaped tubes inside, which are connected to each other. A condensation chamber is wrapped around the outside of the U-shaped tubes and filled with a refrigerant inside the condensation chamber.

[0009] In one embodiment, the storage tank has a multi-layer structure, consisting of an outer body, a sandwich layer, and an inner liner from the outside in. A pressure gauge is installed at the mouth of the storage tank.

[0010] In one embodiment, the inner liner of the storage tank is made of stainless steel, the interlayer is filled with inert argon gas, and the outer body is made of concrete.

[0011] Beneficial effects: The integrated connection of modules such as the compression unit, filtration unit, cooling unit, and storage tank via conduits forms a coherent gas processing flow, reducing the risk of leakage in the gas transmission path and significantly improving gas collection efficiency. The filtration unit uses HEPA air filter elements, which can effectively filter out most harmful impurities in the compressed gas, ensuring gas purity. The cooling unit utilizes a design combining a U-shaped tube and a condensation chamber to increase the heat exchange area and time, rapidly reducing the temperature of the compressed gas and improving gas cooling efficiency. The storage tank adopts a multi-layer structure design with an outer body, a jacket, and an inner liner. The concrete outer body enhances impact resistance, the jacket is filled with inert argon gas for efficient heat insulation and chemical protection, and the stainless steel inner liner ensures sealing and strength. A pressure gauge at the bottle opening monitors the pressure in real time, comprehensively ensuring gas storage safety. The filtration unit allows for quick disassembly and replacement of the filter element, reducing equipment maintenance costs. The modular design also facilitates the inspection and replacement of other components, extending the overall service life of the equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the external structure of the filter device of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of the filter device of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the cross-section of the storage tank body of this utility model.

[0018] The annotations in the attached figures are explained as follows:

[0019] 1. Conduit; 2. Compression device; 3. Compression device base; 4. Filter; 5. Cooling device; 6. Collection pipe; 7. Storage tank; 8. Storage tank base; 9. Inlet valve; 10. Outlet valve; 11. Gas compression chamber; 12. Motor; 13. U-tube; 14. Condensation chamber; 15. Sealing cap; 16. Filter element; 17. Filter chamber; 18. Support rod; 19. Outer bottle body; 20. Interlayer; 21. Inner liner; 22. Pressure gauge; 23. Connecting rod; 24. Piston; 25. Inlet; 26. Outlet; 27. Support plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To achieve the above-mentioned utility model objectives, such as Figure 1-5 As shown, this utility model provides:

[0022] An automated gas collection device for a refrigerant filling workshop includes a conduit 1, a compression device 2, a compression device base 3, a filter 4, a cooling device 5, a collection pipe 6, a storage tank 7, and a storage tank base 8. Conduits 1 are provided on both the left and right sides of the compression device 2. The compression device base 3 is located below the compression device 2. The end of the conduit 1 on the right side of the compression device 2 is connected to the filter device 4. The right side of the filter device 4 is also provided with a conduit 1. The end of the conduit 1 on the right side of the filter device 4 is connected to the cooling device 5. The collection pipe 6 is located on the right side of the cooling device 5. The storage tank 7 is located below the collection pipe 6. The storage tank base 8 is located below the storage tank 7.

[0023] like Figure 2As shown, the compression device 2 has a gas compression chamber 11 inside. An inlet valve 9 and an outlet valve 10 are located on both sides above the gas compression chamber 11. Both the inlet valve 9 and the outlet valve 10 are one-way valves. A piston 24 is installed inside the gas compression chamber 11, and a connecting rod 23 is connected to the lower end of the piston 24. A motor 12 is located below the gas compression chamber 11, and the motor 12 is connected to the piston 24 via the connecting rod 23. The motor 12 is electrically connected to an external power source via a power cord.

[0024] In this embodiment, when the motor 12 rotates and drives the piston 24 to pull down, the space of the compression chamber 11 increases, the intake valve 9 opens, and the gas enters the compression chamber 11 through the left conduit 1. When the motor 12 rotates and drives the piston 24 to move upward, the space of the compression chamber 11 decreases and the intake valve 9 closes. When the gas is compressed to a certain volume, the exhaust valve 10 opens, and the compressed gas is discharged from the right conduit 1.

[0025] like Figure 3 As shown in Figure 4, the filter device 4 has a filter chamber 17 inside, a support rod 18 is installed inside the filter chamber 17, and a filter element 16 is installed inside the filter chamber 17 and outside the support rod 18. The filter element 16 is made of HEPA air filter material. A support plate 27 is connected to the lower end of the support rod 18 and passes through the filter element 16. The support plate 27 has a porous and breathable structure. A sealing cover 15 is fixedly connected to the upper part of the support rod 18. An air inlet 25 and an air outlet 26 are respectively provided on the two outer sides of the filter chamber 17.

[0026] In this embodiment, compressed gas enters the filter chamber 17 from the air inlet 25, and after being filtered by the filter element 16 to remove most of the harmful impurities, it is discharged from the air outlet 26.

[0027] like Figure 4 As shown, a threaded hole is provided at the center of the support plate 27, and a thread is provided at the bottom outer side of the support rod 18. The support plate 27 is screwed to the lower end of the support rod 18 through the thread.

[0028] In this embodiment, the support rod 18, support plate 27, and filter element 16 can be pulled out from the filter chamber 17 by rotating the sealing cover 15. The support plate 27 can be removed from the support rod 18 by rotating the support plate 27, and the filter element 16 can be taken out and replaced.

[0029] like Figure 2 As shown, the cooling device 5 is equipped with several U-shaped tubes 13. The U-shaped tubes 13 are connected to each other and wrapped with a condensing chamber 14 on the outside. The condensing chamber 14 is filled with a coolant. When the high-temperature compressed gas enters the cooling device 5 through the conduit 1, it will pass through the U-shaped tubes 13. During the process of passing through the U-shaped tubes 13, the condensing chamber 14 will reduce the temperature of the compressed gas. The cooled compressed gas will be discharged into the collection pipe 6.

[0030] like Figure 5As shown, the storage tank 7 has a multi-layer structure, consisting of an outer body 19, a sandwich layer 20, and an inner liner 21 from the outside to the inside. The sandwich layer 20 is a hollow structure, the inner liner 21 is made of stainless steel, the sandwich layer 20 is filled with inert argon gas, the outer body 19 is made of concrete, and a pressure gauge 22 is installed at the mouth of the storage tank 7.

[0031] In this embodiment, the cooled compressed gas enters the storage tank 7 through the collection pipe, and the pressure gauge 22 at the bottle opening indicates the current pressure inside the storage tank.

[0032] Working principle: When operating inside the refrigerant filling workshop, the gas inside the workshop first enters the compression device 2 through the conduit 1 on the left side of the compression device 2. After compression, the gas enters the filter device 4 through the conduit 1 on the right side of the compression device 2 for filtration. After filtration, the compressed gas enters the cooling device 5 through the conduit 1 at the outlet 26 for cooling. The cooled compressed gas enters the collection pipe 6 on the right side and finally enters the storage tank 7 for bottling.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An automated gas collection device for a refrigerant filling workshop, comprising a conduit (1), a compression device (2), a compression device base (3), a filter device (4), a cooling device (5), a collection pipe (6), a storage tank (7), and a storage tank base (8), characterized in that, The compression device (2) is provided with conduits (1) on both the left and right sides. A compression device base (3) is provided below the compression device (2). A filter device (4) is connected to the end of the conduit (1) on the right side of the compression device (2). A conduit (1) is also provided on the right side of the filter device (4). A cooling device (5) is connected to the end of the conduit (1) on the right side of the filter device (4). A collection pipe (6) is provided on the right side of the cooling device (5). A storage tank (7) is provided below the collection pipe (6). A storage tank base (8) is provided below the storage tank (7).

2. The automated gas collection equipment for a refrigerant filling workshop as described in claim 1, characterized in that, The compression device (2) has a gas compression chamber (11) inside. An inlet valve (9) and an outlet valve (10) are provided on both sides above the gas compression chamber (11). A piston (24) is provided inside the gas compression chamber (11). A connecting rod (23) is connected to the lower end of the piston (24). A motor (12) is provided below the gas compression chamber (11). The motor (12) is connected to the piston (24) through the connecting rod (23).

3. The automated gas collection equipment for a refrigerant filling workshop as described in claim 1, characterized in that, The filter device (4) has a filter chamber (17) inside, a support rod (18) is installed inside the filter chamber (17), a filter element (16) is installed inside the filter chamber (17) and outside the support rod (18), a support plate (27) is connected to the lower end of the support rod (18) and passes through the filter element (16), a sealing cover (15) is fixedly connected to the upper part of the support rod (18), and an air inlet (25) and an air outlet (26) are respectively provided on both sides of the outside of the filter chamber (17).

4. The automated gas collection equipment for a refrigerant filling workshop as described in claim 3, characterized in that, The support plate (27) has a threaded hole at its center, and the support rod (18) has a threaded hole at its outer bottom position. The support plate (27) is screwed to the lower end of the support rod (18) by the thread.

5. An automated gas collection device for a refrigerant filling workshop as described in claim 1, characterized in that, The cooling device (5) is equipped with several U-shaped tubes (13), which are connected to each other, and the outside of the U-shaped tubes (13) is wrapped with a condensation chamber (14).

6. The automated gas collection equipment for a refrigerant filling workshop as described in claim 5, characterized in that, The condenser chamber is filled with refrigerant.

7. An automated gas collection device for a refrigerant filling workshop as described in claim 1, characterized in that, The storage tank (7) has a multi-layer structure, consisting of an outer body (19), a sandwich layer (20), and an inner liner (21) from the outside to the inside. A pressure gauge (22) is installed at the mouth of the storage tank.

8. An automated gas collection device for a refrigerant filling workshop as described in claim 7, characterized in that, The inner liner (21) of the storage tank (7) is made of stainless steel, the interlayer (20) is filled with inert argon gas, and the outer body (19) is made of concrete.