Automatic refrigerant filling device

Abstract

The utility model relates to the technical field of refrigerants, and discloses an automatic refrigerant filling device which comprises a conveying pipe, the right end of the conveying pipe penetrates through and is fixedly connected with a flow meter, the right end of the flow meter penetrates through and is fixedly connected with a first electromagnetic valve, and the right end of the first electromagnetic valve penetrates through and is fixedly connected with an output pipe. The right end of the output pipe penetrates through and is fixedly connected with a storage tank, the top of the outer ring of the conveying pipe penetrates through and is fixedly connected with a second electromagnetic valve, the top of the second electromagnetic valve penetrates through and is fixedly connected with a connecting pipe, the left end of the connecting pipe penetrates through and is fixedly connected with a connector, and the left end of the connector is fixedly connected with an extension pipe. According to the device, through the extension pipe, the threaded ring, the fixing ring, the connector, the suction cup and the extrusion cover, the extension pipe is inserted into a filling port of equipment needing to be filled, then the threaded ring is rotated for threaded connection, then the suction cup slides, the suction cup is moved to the outer side of the fixing ring, and the suction cup and the port are used for sucking.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerants, in particular to an automatic refrigerant filling device. Background Art

[0002] During the refrigerant filling process, automatic filling devices are widely used to fill the refrigerant. Refrigerant is a fluid used in refrigeration and air-conditioning systems. It can absorb heat during the circulation process, thereby achieving a cooling effect. The main function of the refrigerant is to complete the heat transfer through the evaporation and condensation process. Automatic filling devices are also used in the refrigerant filling process.

[0003] When charging, the existing charging device connects the outlet pipe to the charging port of the equipment that needs to be charged, and then transports the refrigerant for charging.

[0004] However, when the existing filling device is in use, the filling method mainly uses a gas filling valve. Due to the high density and rapid diffusion of gaseous refrigerant, it is easy to leak at the interface, thereby causing environmental pollution. To address the above problems, an automatic refrigerant filling device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a refrigerant automatic filling device, which solves the problem in the background technology that leakage is likely to occur at the interface, thereby causing pollution to the environment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a refrigerant automatic filling device, comprising a transport pipe, the right end of the transport pipe passes through and is fixedly connected to a flow meter, the right end of the flow meter passes through and is fixedly connected to a first solenoid valve, the right end of the first solenoid valve passes through and is fixedly connected to an output pipe, the right end of the output pipe passes through and is fixedly connected to a storage tank, the top of the outer ring of the transport pipe passes through and is fixedly connected to a second solenoid valve, the top of the second solenoid valve passes through and is fixedly connected to a connecting pipe, the left end of the connecting pipe passes through and is fixedly connected to a joint, the left end of the joint is fixedly connected to an extension pipe, the outer ring of the extension pipe is fixedly connected to a fixing ring, the left end of the fixing ring is rotatably connected to a threaded ring, the inner ring of the threaded ring is fixedly connected to a baffle, the outer ring of the joint is slidably connected to a mounting plate, the left end of the mounting plate is fixedly connected to a suction cup, the outer ring of the connecting pipe is slidably connected to an extrusion cover, and the top of the outer ring of the suction cup passes through and is provided with a detection component.

[0007] By adopting the above technical solution, the extension tube is inserted into the filling port of the equipment to be filled, and then the threaded ring is rotated to make a threaded connection. Then the suction cup is slid to move it to the outside of the fixed ring, and the suction cup is sucked to the port to make a second connection. Then the extrusion cover is slid and rotated with the mounting plate to fix the suction cup.

[0008] As a further description of the above technical solution: the detection component includes a detection cylinder that passes through and is fixedly connected to the suction cup, the inner ring of the detection cylinder is slidably connected to a piston, the top of the piston is fixedly connected to a support rod, and the support rod passes through and extends to one side of the detection cylinder, a scale is provided on one side of the outer ring of the support rod, the top of the outer ring of the extension tube passes through and is fixedly connected to a delivery pipe, and the delivery pipe passes through and extends to one side of the threaded ring, the top of the delivery pipe passes through and is fixedly connected to a one-way valve, and the bottom of the outer ring of the suction cup passes through and is provided with a gas detector.

[0009] By adopting the above technical solution, the detection component can detect leaked gas and improve safety.

[0010] As a further description of the above technical solution: a cover is provided on the top of the storage tank, and a booster pump is passed through and provided at the right end of the top of the storage tank.

[0011] By adopting the above technical solution, the booster pump increases the pressure inside the storage tank.

[0012] As a further description of the above technical solution: a second sealing gasket is provided on one side of the threaded ring.

[0013] By adopting the above technical solution, the second sealing gasket improves the sealing performance with the connection port.

[0014] As a further description of the above technical solution: the inner ring of the extrusion cover is threadedly connected to a mounting plate, and a first sealing gasket is provided between the extrusion cover and the mounting plate.

[0015] By adopting the above technical solution, the first sealing gasket can increase the sealing between the extrusion cover and the mounting plate.

[0016] As a further description of the above technical solution: a knob is fixedly connected to the top of the support rod.

[0017] By adopting the above technical solution, the knob can easily drive the support rod to move.

[0018] As a further description of the above technical solution: a feed pipe passes through and is fixedly connected to the center position of the top of the cover, and a first solenoid valve passes through and is fixedly connected to the top of the feed pipe.

[0019] By adopting the above technical solution, the feed pipe can conveniently add refrigerant to the storage tank.

[0020] As a further description of the above technical solution: a conical head is fixedly connected to the bottom of the detection cylinder, and the conical head passes through and extends to one side of the suction cup.

[0021] By adopting the above technical solution, the conical head can facilitate the gas to enter the detection tube.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The utility model provides an automatic refrigerant filling device, which is equipped with an extension tube, a threaded ring, a fixed ring, a joint, a suction cup, and an extrusion cover. The extension tube is inserted into the filling port of the equipment to be filled, and then the threaded ring is rotated to make a threaded connection. Then the suction cup is slid to the outside of the fixed ring, and the suction cup is sucked to the port to make a second connection. Then, the extrusion cover is slid and rotated with the mounting plate to fix the suction cup. When a leak occurs at the connection between the delivery tube and the port, a second protection is provided to prevent the leak from spreading to the outside and causing pollution to the environment.

[0024] 2. The utility model provides an automatic refrigerant filling device, which uses a one-way valve, a detection cylinder, a support rod, a piston, and a delivery pipe. When a leak occurs, the gas will diffuse into the suction cup and then enter the inside of the conical head, pushing the piston to cause displacement. The leakage situation can be obtained by observing the scale. After the filling is completed, the support rod can be repeatedly pulled and pulled to draw the leaked gas into the detection cylinder and then injected into the extension tube. The gas detector is used for detection, which makes it convenient to timely determine the leakage situation and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the connecting pipe structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the extension tube structure of the utility model;

[0028] Figure 4 This is a cross-sectional view of the overall structure of the utility model;

[0029] Figure 5 This is an exploded view of the suction cup structure of the present invention.

[0030] In the figure: 1. transport pipe; 2. flow meter; 3. first solenoid valve; 4. storage tank; 5. connecting pipe; 6. second solenoid valve; 7. output pipe; 8. booster pump; 9. feed pipe; 10. suction cup; 11. mounting plate; 12. first sealing gasket; 13. extrusion cover; 14. detection cylinder; 15. support rod; 16. scale; 17. piston; 18. conical head; 19. extension pipe; 20. threaded ring; 21. joint; 22. transport pipe; 23. one-way valve; 24. fixing ring; 25. second sealing gasket; 26. baffle; 27. knob; 28. cover; 29. gas detector. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0033] Combine Figure 1 The utility model is a refrigerant automatic filling device, including a transport pipe 1, the right end of the transport pipe 1 passes through and is fixedly connected to a flow meter 2, the right end of the flow meter 2 passes through and is fixedly connected to a first solenoid valve 3, the right end of the first solenoid valve 3 passes through and is fixedly connected to an output pipe 7, the flow meter 2 can detect the amount passing through, and the first solenoid valve 3 and the second solenoid valve 6 are provided to increase safety, the right end of the output pipe 7 passes through and is fixedly connected to a storage tank 4, the top of the storage tank 4 is provided with a cover 28, and the right end of the top of the storage tank 4 passes through and is provided with a booster pump 8. When the booster pump 8 is working, the pressure in the storage tank 4 can be increased. , and then to facilitate gas delivery, a second sealing gasket 25 is provided on one side of the threaded ring 20, the inner ring of the extrusion cover 13 is threadedly connected to the mounting plate 11, and a first sealing gasket 12 is provided between the extrusion cover 13 and the mounting plate 11. The first sealing gasket 12 can increase the sealing between the extrusion cover 13 and the suction cup 10. The feed pipe 9 is passed through and fixedly connected to the top center of the cover 28, and the first solenoid valve 3 is passed through and fixedly connected to the top of the feed pipe 9. The bottom of the detection cylinder 14 is fixedly connected to the conical head 18, which facilitates entry into the detection cylinder 14, and the conical head 18 passes through and extends to the conical head 18 on one side of the suction cup 10.

[0034] Combine Figure 2 and Figure 3The top of the outer ring of the transport pipe 1 passes through and is fixedly connected with a second solenoid valve 6, and the top of the second solenoid valve 6 passes through and is fixedly connected with a connecting pipe 5. The second solenoid valve 6 controls the connecting pipe 5. The left end of the connecting pipe 5 passes through and is fixedly connected with a joint 21. The left end of the joint 21 is fixedly connected to the extension pipe 19. The outer ring of the extension pipe 19 is fixedly connected with a fixing ring 24. The threaded ring 20 is rotated to connect with the port. The left end of the fixing ring 24 is rotatably connected to the threaded ring 20. The inner ring of the threaded ring 20 is fixedly connected with a baffle 26. The outer ring of the joint 21 is slidably connected to the mounting plate 11. The extrusion cover 13 and the mounting plate 11 are connected to each other to fix the suction cup 10, and the other end of the suction cup 10 is connected to the port for sealing. The left end of the mounting plate 11 is fixedly connected with the suction cup 10, and the outer ring of the connecting pipe 5 is slidably connected with the extrusion cover 13. The top of the outer ring of the suction cup 10 passes through and is provided with a detection component.

[0035] Combine Figure 4 and Figure 5 The detection component includes a detection cylinder 14 that passes through and is fixedly connected to the suction cup 10. The inner ring of the detection cylinder 14 is slidably connected to a piston 17. When the leaked gas diffuses, the piston 17 will be squeezed and then moved. The top of the piston 17 is fixedly connected to a support rod 15, and the support rod 15 passes through and extends to one side of the detection cylinder 14. A scale 16 is provided on one side of the outer ring of the support rod 15. When the support rod 15 moves, the scale 16 will also move. The top of the outer ring of the extension tube 19 passes through and is fixedly connected to a delivery pipe 22, and the delivery pipe 22 passes through and extends to one side of the threaded ring 20. The top of the delivery pipe 22 passes through and is fixedly connected to a one-way valve 23. The one-way valve 23 allows the leaked gas to enter and the internal gas will not flow out. The bottom of the outer ring of the suction cup 10 passes through and is provided with a gas detector 29. The gas detector 29 can detect the concentration of the leaked gas in the suction cup 10. When the concentration is higher, it means that there is more gas leaking. The top of the support rod 15 is fixedly connected to a knob 27.

[0036] Working principle: When using the automatic filling device, first insert the extension tube 19 into the filling port of the equipment to be filled, then rotate the threaded ring 20 to connect it to the port, and place a second sealing gasket 25 between the port and the threaded ring 20 to increase the sealing performance. Then slide the suction cup 10 to the outside of the fixing ring 24 so that the suction cup 10 can be sucked and sealed with the port. Then slide the extrusion cover 13 to the outer ring of the mounting plate 11 and rotate it with the mounting plate 11 to limit and fix the suction cup 10. A first sealing gasket 12 is set between the extrusion cover 13 and the mounting plate 11 to increase the sealing performance. Then you can start the booster pump 8 and open the first solenoid valve in turn. 3 and the second solenoid valve 6, while the flow meter 2 performs flow detection to perform automatic filling. When leakage occurs during filling, it will diffuse in the suction cup 10, and part of the gas will also enter the detection cylinder 14 from the conical head 18, and then the piston 17 will be displaced. The leakage can be understood by observing the scale 16. At the same time, the gas detector 29 will also detect the concentration in the suction cup 10 to improve safety. When the filling is completed, the support rod 15 can be repeatedly pulled and pulled to allow the gas to enter the detection cylinder 14, and then the gas can enter the extension tube 19. The gas detector 29 performs concentration detection to reduce the outflow of gas and pollute the environment.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigerant automatic charging device, comprising a transport pipe (1), characterized in that: The right end of the transport pipe (1) passes through and is fixedly connected to a flow meter (2), the right end of the flow meter (2) passes through and is fixedly connected to a first electromagnetic valve (3), the right end of the first electromagnetic valve (3) passes through and is fixedly connected to an output pipe (7), the right end of the output pipe (7) passes through and is fixedly connected to a storage tank (4), the top of the outer ring of the transport pipe (1) passes through and is fixedly connected to a second electromagnetic valve (6), the top of the second electromagnetic valve (6) passes through and is fixedly connected to a connecting pipe (5), the left end of the connecting pipe (5) passes through and is fixedly connected to a joint (21), The left end of the joint (21) is fixedly connected to the extension tube (19), the outer ring of the extension tube (19) is fixedly connected to a fixing ring (24), the left end of the fixing ring (24) is rotatably connected to a threaded ring (20), the inner ring of the threaded ring (20) is fixedly connected to a baffle (26), the outer ring of the joint (21) is slidably connected to a mounting plate (11), the left end of the mounting plate (11) is fixedly connected to a suction cup (10), the outer ring of the connecting tube (5) is slidably connected to an extrusion cover (13), and the top of the outer ring of the suction cup (10) is penetrated and provided with a detection component.

2. The automatic refrigerant charging device according to claim 1, characterized in that: The detection assembly includes a detection cylinder (14) that passes through and is fixedly connected to the suction cup (10); the inner ring of the detection cylinder (14) is slidably connected to a piston (17); the top of the piston (17) is fixedly connected to a support rod (15), and the support rod (15) passes through and extends to one side of the detection cylinder (14); a scale (16) is provided on one side of the outer ring of the support rod (15); the top of the outer ring of the extension tube (19) passes through and is fixedly connected to a delivery pipe (22), and the delivery pipe (22) passes through and extends to one side of the threaded ring (20); the top of the delivery pipe (22) passes through and is fixedly connected to a one-way valve (23); and the bottom of the outer ring of the suction cup (10) passes through and is provided with a gas detector (29).

3. The automatic refrigerant charging device according to claim 1, characterized in that: The top of the storage tank (4) is provided with a cover (28), and the right end of the top of the storage tank (4) is penetrated and provided with a booster pump (8).

4. The automatic refrigerant charging device according to claim 1, characterized in that: A second sealing gasket (25) is provided on one side of the threaded ring (20).

5. The automatic refrigerant charging device according to claim 1, characterized in that: The inner circle of the extrusion cover (13) is threadedly connected to the mounting plate (11), and a first sealing gasket (12) is provided between the extrusion cover (13) and the mounting plate (11).

6. The automatic refrigerant charging device according to claim 2, characterized in that: A rotating knob (27) is fixedly connected to the top of the support rod (15).

7. The automatic refrigerant charging device according to claim 3, characterized in that: A feed pipe (9) passes through and is fixedly connected to the center of the top of the cover (28), and a first solenoid valve (3) passes through and is fixedly connected to the top of the feed pipe (9).

8. The automatic refrigerant charging device according to claim 2, characterized in that: A conical head (18) is fixedly connected to the bottom of the detection cylinder (14), and the conical head (18) passes through and extends to one side of the suction cup (10).

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