A checking and charging device for air conditioner circulation pipeline

Abstract

The utility model belongs to air conditioning technical field, concretely relates to a kind of inspection filling device for air conditioner circulation pipeline, including high pressure circulation pipe and low pressure circulation pipe, high pressure circulation pipe and low pressure circulation pipe are all equipped with three-way connector, the free pipe end of three-way connector is welded with vertical direct pipe of intercommunication, pressure control valve is installed on vertical direct pipe, bending pipe is installed on pressure control valve, and pressure gauge is installed in the lower free end of bending pipe, the free side of three-way connector is equipped with filling control valve.The utility model is by the pressure gauge of being set in the lower side of high pressure circulation pipe and low pressure circulation pipe, to intuitively monitor the high-low voltage state of refrigerant pipeline in room, it is convenient to judge and supplement refrigerant in time.Meanwhile, the filling control valve on three-way connector is not only closed by protection component, but also can be conveniently disassembled to control filling control valve, and refrigerant filling operation is carried out to circulation pipeline on indoor side, significantly improve operation safety.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, specifically relating to an inspection and charging device for air conditioning circulation pipelines. Background Technology

[0002] Existing air conditioning systems primarily rely on the intuitive feeling of the outlet air temperature after the air conditioner has been running to monitor its cooling effect. This method of judgment is significantly lagging and subjective. When refrigerant leaks or is insufficient, the system is often already in an abnormal operating state. At this point, judging the problem solely by changes in outlet air temperature is not only inefficient but may also lead to damage to core components such as the compressor due to delayed detection. Traditional detection methods require professional technicians to use specialized equipment to inspect the piping system, which is complex and cannot achieve real-time monitoring. Therefore, this utility model proposes an inspection and charging device for air conditioning circulation piping to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an inspection and charging device for air conditioning circulation pipelines, which can solve the above-mentioned technical problems.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] This utility model provides an inspection and charging device for air conditioning circulation pipes, including a high-pressure circulation pipe and a low-pressure circulation pipe. Both the high-pressure and low-pressure circulation pipes are equipped with a three-way connector. The free end of the three-way connector is welded with an interconnecting vertical connector. A pressure control valve is installed on the vertical connector. A bend is installed on the pressure control valve, and a pressure gauge is installed on the lower free end of the bend. A charging control valve is installed on the free side of the three-way connector.

[0006] Both the high-pressure circulation pipe and the low-pressure circulation pipe are mounted on a fixed assembly, and the fixed assembly is equipped with a protective component for protecting the filling control valve.

[0007] Preferably, the fixing assembly includes a mounting base and two side baffles. The mounting base is bolted to the wall. The two side baffles are symmetrically L-shaped and fixed on both sides of the mounting base. The two side baffles have first slots for connecting high-pressure circulation pipes and low-pressure circulation pipes. The lower side of the two side baffles has second slots for connecting other pipes or lines.

[0008] Preferably, the tee fittings on the high-pressure circulation pipe and the low-pressure circulation pipe are staggered, and the high-pressure circulation pipe and the low-pressure circulation pipe are respectively provided with pressure plates and clamping screws. The clamping screws are threadedly engaged with the first expansion nut. The pressure plates press the high-pressure circulation pipe and the low-pressure circulation pipe into the first bayonet through the clamping screws. The first expansion nut is provided on the mounting base.

[0009] Preferably, the protective assembly includes a cover and a fixing screw. The cover is disposed between two side baffles and forms a closed state for the two filling control valves. The fixing screw passes through the cover and is threadedly engaged with a second expansion nut, which is disposed between the two side baffles and mounted on a mounting base.

[0010] Preferably, the cover has a third slot on the opposite side plate for connecting the high-pressure circulation pipe and the low-pressure circulation pipe, and a fourth slot corresponding to the second slot is provided on the lower side of the opposite side plate.

[0011] Preferably, the lower side plate of the cover has a fifth slot for engaging with the bent tube.

[0012] Preferably, the upper and lower side plates of the cover are provided with protruding latches, and the two latches abut against the upper and lower sides of the two side plates.

[0013] The beneficial effects are:

[0014] 1. This utility model uses a three-way connector installed on the high-pressure and low-pressure circulation pipes. A pressure gauge is mounted on the three-way connector via a vertical connector. Combined with protective and fixing components, the pressure gauge can be installed on an indoor wall, allowing for direct monitoring of the high and low pressure status of the refrigerant pipelines, facilitating timely refrigerant replenishment. Simultaneously, the protective component seals and shields the charging control valve on the three-way connector, ensuring the valve is closed when not in use, effectively reducing the risk of refrigerant leakage.

[0015] 2. This utility model, through the combined design of the fixing component and the protective component, allows for easy removal of the protective component's cover, enabling refrigerant charging of the circulation pipeline via the charging control valve. This design allows the refrigerant charging operation to be completed indoors, significantly improving operational safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the explosion distribution structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the pressure gauge installation structure on the high-pressure circulation pipe and the low-pressure circulation pipe of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. High-pressure circulation pipe; 2. Low-pressure circulation pipe; 3. Tee connector; 4. Vertical connector; 5. Pressure control valve; 6. Bend pipe; 7. Pressure gauge; 8. Filling control valve; 9. Mounting base; 10. Side baffle; 10a. First bayonet; 10b. Second bayonet; 11. Pressure plate; 12. Clamping screw; 13. First expansion rivet nut; 14. Cover; 14a. Third bayonet; 14b. Fourth bayonet; 14c. Fifth bayonet; 14d. Clamping part; 15. Fixing screw; 16. Second expansion rivet nut. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figure 1-3 As shown, an inspection and charging device for air conditioning circulation pipes includes a high-pressure circulation pipe 1 and a low-pressure circulation pipe 2. Both the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 are equipped with a three-way connector 3. The free end of the three-way connector 3 is welded with an interconnecting vertical connector 4. A pressure control valve 5 is installed on the vertical connector 4. A bend pipe 6 is installed on the pressure control valve 5. A pressure gauge 7 is installed on the lower free end of the bend pipe 6. A charging control valve 8 is installed on the free side of the three-way connector 3.

[0023] Both the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 are mounted on the fixed assembly, and the fixed assembly is equipped with a protective component for protecting the filling control valve 8.

[0024] As an optional implementation, the fixing assembly includes a mounting base 9 and two side baffles 10. The mounting base 9 is mounted on the wall by bolts. The two side baffles 10 are configured as symmetrical L-shapes and are fixed on both sides of the mounting base 9. The two side baffles 10 have a first slot 10a for connecting the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2. The lower side of the two side baffles 10 has a second slot 10b for connecting other pipes or lines. Thus, the side baffles 10 are used to connect the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2, thereby improving the positioning restriction of the air conditioning circulation pipe.

[0025] See attached document Figure 3The tee fittings 3 on the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 are staggered, and the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 are respectively provided with pressure plates 11 and clamping screws 12. The clamping screws 12 are threadedly engaged with the first expansion nut 13. The pressure plates 11 press the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 into the first bayonet 10a through the clamping screws 12. The first expansion nut 13 is set on the mounting base 9. The two sides of the pressure plates 11 are set as semi-circular arcs, so as to fit the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2. With the first expansion nut 13 and the clamping screws 12, the clamping and fixing effect of the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2 is achieved.

[0026] See attached document Figure 2 The protective assembly includes a cover 14 and a fixing screw 15. The cover 14 is positioned between two side baffles 10 and forms a closed state for the two charging control valves 8. The fixing screw 15 passes through the cover 14 and is threadedly engaged with a second expansion nut 16. The second expansion nut 16 is positioned between the two side baffles 10 and on the mounting base 9. In this way, the cover 14 can be pressed and fixed by the cooperation of the second expansion nut 16 and the fixing screw 15, and it is also convenient to disassemble and open it during the later refrigerant charging.

[0027] Furthermore, a third latch 14a is provided on the opposite side plate of the cover 14 to be sleeved with the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2, and a fourth latch 14b corresponding to the second latch 10b is provided on the lower side of the opposite side plate of the cover 14, so that the fourth latch 14b and the second latch 10b form a combined tightened state, thereby improving the fixing effect on other pipes or lines.

[0028] Furthermore, a fifth latch 14c is provided on the lower side plate of the cover 14 to engage with the bent tube 6, thereby allowing the fifth latch 14c to move freely when engaging and disengaging the bent tube 6, facilitating the disassembly and separation of the cover 14.

[0029] Furthermore, the upper and lower side plates of the cover 14 are provided with protruding latching parts 14d. The two latching parts 14d abut against the upper and lower sides of the two side baffles 10, thereby restricting the up and down movement of the cover 14 and reducing the impact of shaking on the fixing screws 15.

[0030] Using the above structure, when refrigerant charging is required, first loosen the fixing screws 15 of the protective assembly, lift the cover 14 upwards along the bend 6, so that the fifth latch 14c separates from the bend 6, and at the same time the third latch 14a disengages from the high-pressure circulation pipe 1 and the low-pressure circulation pipe 2, then the cover 14 can be completely removed to expose the charging control valve 8; next, connect and lock the quick connector of the refrigerant charging equipment to the valve core interface of the charging control valve 8, and slowly open the charging control valve 8 and the pressure control valve 5. Pressure gauge 7 displays the pipeline pressure value in real time. Operators determine the refrigerant charge amount based on the high and low pressure values ​​displayed on gauge 7, and gradually add refrigerant by controlling the charging equipment. Pressure changes can be observed at any time during this process. After charging is complete, first close the charging control valve 8, then disconnect the charging equipment connector. After confirming there are no leaks, reinstall the cover 14, ensuring the fifth clamp 14c is fitted onto the bent pipe 6, and the third clamp 14a secures the circulation pipe. Finally, tighten the fixing screws 15 to reset the cover 14, completing the entire charging operation. This entire process is completed indoors without disassembling the pipeline, ensuring operational safety and allowing real-time monitoring of the system status via pressure gauge 7.

[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. This application is mainly used to protect mechanical devices. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, are implemented according to conventional methods in the field.

Claims

1. An inspection charging device for an air conditioning circulation line, characterized by: It includes a high-pressure circulation pipe (1) and a low-pressure circulation pipe (2). Both the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2) are equipped with a three-way pipe (3). The free end of the three-way pipe (3) is welded with an interconnecting vertical pipe (4). The vertical pipe (4) is equipped with a pressure control valve (5). The pressure control valve (5) is equipped with a bend pipe (6). A pressure gauge (7) is installed on the lower free end of the bend pipe (6). A filling control valve (8) is installed on the free side of the three-way pipe (3). Both the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2) are mounted on a fixed assembly, and the fixed assembly is equipped with a protective component for protecting the filling control valve (8).

2. The inspection and charging device for air conditioning circulation pipelines according to claim 1, characterized in that: The fixing assembly includes a mounting base (9) and two side baffles (10). The mounting base (9) is mounted on the wall by bolts. The two side baffles (10) are set in a symmetrical L-shape and fixed on both sides of the mounting base (9). The two side baffles (10) are provided with a first slot (10a) for connecting the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2). The lower side of the two side baffles (10) is provided with a second slot (10b) for connecting other pipes or lines.

3. The inspection and charging device for air conditioning circulation pipelines according to claim 2, characterized in that: The three-way connectors (3) on the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2) are misaligned, and the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2) are respectively provided with pressure plates (11) and clamping screws (12). The clamping screws (12) are threadedly engaged with the first expansion nut (13). The pressure plates (11) press the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2) into the first bayonet (10a) through the clamping screws (12). The first expansion nut (13) is provided on the mounting base (9).

4. The inspection and charging device for air conditioning circulation pipeline according to claim 3, characterized in that: The protective assembly includes a cover (14) and a fixing screw (15). The cover (14) is disposed between two side baffles (10) and forms a closed state for the two filling control valves (8). The fixing screw (15) passes through the cover (14) and is threadedly engaged with a second expansion nut (16). The second expansion nut (16) is disposed between the two side baffles (10) and is mounted on the mounting base (9).

5. The inspection and charging device for air conditioning circulation pipeline according to claim 4, characterized in that: The cover (14) has a third slot (14a) on the opposite side plate for engaging with the high-pressure circulation pipe (1) and the low-pressure circulation pipe (2), and a fourth slot (14b) corresponding to the second slot (10b) is provided on the lower side of the opposite side plate of the cover (14).

6. The inspection and charging device for air conditioning circulation pipeline according to claim 5, characterized in that: The lower side plate of the cover (14) is provided with a fifth slot (14c) for engaging with the bent tube (6).

7. The inspection and charging device for air conditioning circulation pipeline according to claim 6, characterized in that: The cover (14) has protruding latches (14d) on its upper and lower side plates, and the two latches (14d) abut against the upper and lower sides of the two side plates (10).

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