Multifunctional automatic auxiliary operation device suitable for air conditioner test

Abstract

The utility model discloses a multifunctional automatic auxiliary operation device suitable for an air conditioner test, which comprises a prototype connecting pipeline, a main connecting pipeline, a refrigerant oil filling pipeline, a vacuumizing pipeline, a nitrogen filling pipeline, an exhaust pipeline, a refrigerant filling pipeline, a refrigerant recovery pipeline and an electronic scale, the refrigerant oil filling pipeline, the vacuumizing pipeline, the nitrogen filling pipeline, the exhaust pipeline, the refrigerant filling pipeline and the refrigerant recycling pipeline are all communicated with the prototype connecting pipeline through a main connecting pipeline, switch control valves are arranged on the pipelines respectively, a pressure sensor is arranged at one end of the main connecting pipeline, a vacuum pump is arranged on the vacuumizing pipeline, and the nitrogen filling pipeline is communicated with the refrigerant recycling pipeline. The recovery pipeline is provided with a compressor and a heat exchanger, and the electronic scale is arranged at the bottom of the refrigerant tank storage position. According to the utility model, refrigerant recovery, nitrogen charging and pressure maintaining, vacuum pumping and pressure maintaining, refrigerant charging, refrigerant oil charging and other operations involved in the performance test of the air conditioner can be completed, the manual operation in the test process is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner testing, in particular to a multifunctional automatic auxiliary operating device suitable for air conditioner testing. Background Art

[0002] The preparation process before an air conditioner performance test usually involves operations such as refrigerant recovery, nitrogen filling and pressure maintenance, vacuuming and pressure maintenance, refrigerant charging, and refrigeration oil charging. Currently, these operations are all controlled by manually operating valves and turning on and off electric pumps to control flow. Pressure gauges are visually observed and judged based on experience. This is highly dependent on manual operation and requires the tester to intervene or manually operate the unit at all times. This will lead to the following problems:

[0003] 1) The requirements for testers are high, requiring professional training and experience accumulation;

[0004] 2) Human error is easy to occur in complex operating processes. When the tester is busy, there is a possibility of missing an operating step. There is also a risk that the tester will not follow the operating specifications, resulting in insufficient vacuuming of the air conditioner, insufficient pressure maintenance, incomplete leak detection, and inaccurate charging, which will require rework, resulting in increased testing time or deviations in test data during the test process.

[0005] 3) During the operation process, the pipes and valves are operated multiple times, which results in a lot of accumulated fragmented time, low efficiency and waste of working hours;

[0006] 4) During the nitrogen filling and pressure maintaining process, improper operation can easily cause nitrogen to be discharged into the air, which can also cause a decrease in local oxygen concentration and pose a safety hazard;

[0007] 5) The current trend is towards the use of environmentally friendly refrigerants. Most of the air conditioners tested are R&D models. During the filling, release and recovery of the refrigerant, the testers are in long-term contact with R32 and R290 refrigerants. However, these refrigerants are flammable and explosive gases. Recovery and release must strictly follow operational safety specifications. However, relying on manual operation makes it difficult to ensure that the testers strictly implement the operating specifications. Utility Model Content

[0008] The purpose of the utility model is to provide a multifunctional automatic auxiliary operation device suitable for air conditioner testing, which can complete the operations involved in the air conditioner performance test, such as refrigerant recovery, nitrogen filling and pressure maintenance, vacuuming and pressure maintenance, refrigerant filling, and refrigeration oil filling, thereby reducing manual operations in the test process and improving efficiency.

[0009] The purpose of this utility model is achieved through the following technical solutions:

[0010] A multifunctional automatic auxiliary operation device suitable for air conditioner testing is characterized in that it includes a prototype connecting pipeline for connecting to the air conditioner under test, a main connecting pipeline, a refrigeration oil filling pipeline, a vacuum pipeline, a nitrogen filling pipeline, an exhaust pipeline, a refrigerant filling pipeline, a refrigerant recovery pipeline and an electronic scale. The refrigeration oil filling pipeline, the vacuum pipeline, the nitrogen filling pipeline, the exhaust pipeline, the refrigerant filling pipeline and the refrigerant recovery pipeline are all connected to the prototype connecting pipeline through the main connecting pipeline, and switch control valves are respectively provided on the refrigeration oil filling pipeline, the vacuum pipeline, the nitrogen filling pipeline, the exhaust pipeline, the refrigerant filling pipeline and the refrigerant recovery pipeline. A pressure sensor is provided at one end of the main connecting pipeline connected to the prototype connecting pipeline, a vacuum pump is provided on the vacuum pipeline, and a compressor and a heat exchanger are provided on the recovery pipeline. A refrigerant tank storage position is provided on the multifunctional automatic auxiliary operation device, and an electronic scale is provided at the bottom of the refrigerant tank storage position for weighing the refrigerant tank.

[0011] A further technical solution of the present invention is: the multifunctional automatic auxiliary operation device also includes an isolation pipeline, the refrigerant filling pipeline and the refrigerant recovery pipeline are both connected to the main connecting pipeline through the isolation pipeline, and a switch control valve is also provided on the isolation pipeline.

[0012] A further technical solution of the utility model is: an oil separator for separating the refrigerant and the refrigeration oil is provided on the refrigerant recovery pipeline, the oil discharge end of the oil separator is connected to the oil discharge tank, and the separated refrigeration oil will be discharged to the oil discharge tank.

[0013] A further technical solution of the present utility model is as follows: the heat exchanger includes a plate heat exchanger and a condenser, the input end of the first heat exchange channel of the plate heat exchanger is connected to the input end of the refrigerant recovery pipeline, the output end of the first heat exchange channel of the plate heat exchanger is first connected to the input end of the compressor after passing through a first oil separator, the output end of the compressor is first connected to the input end of the second heat exchange channel of the plate heat exchanger after passing through a second oil separator, the output end of the second heat exchange channel of the plate heat exchanger is connected to the input end of the condenser, and the output end of the condenser is connected to the output end of the refrigerant recovery pipeline.

[0014] A further technical solution of the present invention is that a temperature sensor is provided on the pipeline close to the output end of the compressor.

[0015] A further technical solution of the present invention is that a drying filter is provided near the input end of the refrigerant recovery pipeline.

[0016] A further technical solution of the utility model is that a check valve is respectively provided on the refrigeration oil filling pipeline and the refrigerant filling pipeline.

[0017] A further technical solution of the utility model is: a pressure relief pipeline is connected to the main connecting pipeline, and a pressure relief valve is provided on the pressure relief pipeline.

[0018] A further technical solution of the utility model is that a pressure reducing valve is provided on the nitrogen filling pipeline.

[0019] A further technical solution of the present invention is that the multifunctional automatic auxiliary operation device comprises a movable frame, and the pipelines are all arranged on the movable frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model can realize the operations of refrigeration oil charging, vacuuming and pressure maintenance, nitrogen charging and pressure maintenance, refrigerant charging and refrigerant recovery through the refrigeration oil charging pipeline, vacuuming pipeline, nitrogen charging pipeline, refrigerant charging pipeline and refrigerant recovery pipeline, thereby reducing manual operations in the test process, making the test process simpler and improving efficiency. The utility model can also obtain the charging status through the pressure sensor and electronic scale, which can better monitor the charging amount and improve the safety of the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a pipeline of a multifunctional automatic auxiliary operation device according to an embodiment of the present utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of a multifunctional automatic auxiliary operation device according to an embodiment of the present utility model.

[0024] Meaning of the reference numerals in the figure:

[0025] 1-Prototype connecting pipeline; 2-Main connecting pipeline; 3-Refrigeration oil filling pipeline; 4-Exhaust pipeline; 5-Nitrogen filling pipeline; 6-Evacuation pipeline; 7-Refrigerant filling pipeline; 8-Refrigerant recovery pipeline; 9-Pressure sensor; 10-Needle valve; 11-Pressure relief valve; 12-Pressure relief pipeline; 13-Check valve; 14-Seventh switch control valve; 15-Oil filling bottle; 16-Fifth switch control valve; 17-Output end of exhaust pipeline; 18-Fourth switch control valve; 19-Pressure reducing valve; 20-Input end of nitrogen filling pipeline; 21-Sixth switch control valve; 22-Vacuum pump; 3-Second switch control valve; 24-Drying filter; 25-Electronic expansion valve; 26-Plate heat exchanger; 27-Condenser; 28-Compressor; 29-Oil separator; 30-Third switch control valve; 31-Oil drain tank; 32-Pressure controller; 33-Pressure gauge; 34-Temperature sensor; 35-Electronic scale; 36-Refrigerant tank; 37-Pressure relief valve; 38-Exhaust valve; 39-Eighth switch control valve; 40-Switch valve; 41-Connection port; 42-Movable rack; 43-Castors; 44-Electrical control box; 45-Isolation pipeline; 46-First switch control valve. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the embodiments.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Example:

[0031] like Figure 1 and Figure 2 The multifunctional automatic auxiliary operation device suitable for air conditioner testing of this embodiment is shown, which includes a movable frame 42, a prototype connecting pipeline 1, a main connecting pipeline 2, a refrigeration oil filling pipeline 3, a vacuum pipeline 6, a nitrogen filling pipeline 5, an exhaust pipeline 4, a refrigerant filling pipeline 7, a refrigerant recovery pipeline 8, an isolation pipeline 45 and an electronic scale 35.

[0032] The movable frame 42 is a square frame with casters 43 at the bottom. The above-mentioned pipelines, electronic scale 35, etc. are all installed on the movable frame 42. An electric control box 44 is set on the front of the movable frame 42. The electrical components such as the control panel of the multifunctional automatic auxiliary operation device are arranged in the electric control box.

[0033] Among them, the refrigeration oil filling pipeline 3, the vacuum pipeline 6, the nitrogen filling pipeline 5 and the exhaust pipeline 4 are all connected to the prototype connecting pipeline 1 through the main connecting pipeline 2, and the refrigerant filling pipeline 7 and the refrigerant recovery pipeline 8 are connected to the main connecting pipeline 2 through the isolation pipeline 45, that is, the refrigerant filling pipeline 7 and the refrigerant recovery pipeline 8 are also connected to the prototype connecting pipeline 1.

[0034] The prototype connecting pipeline 1 is used to be connected to the air conditioner under test. The prototype connecting pipeline 1 is provided with two connecting ports 41 connected to the air conditioner under test. The connecting ports 41 are respectively provided with a switch valve 40 .

[0035] A pressure sensor 9 is installed at the end of the main connecting line 2 connected to the prototype connecting line 1. This sensor is used to check the pressure in the line during filling, thereby better monitoring the filling volume. A needle valve 10 is installed in the line connected to the pressure sensor 9. A pressure relief line 12 is also installed on the main connecting line 2, and a pressure relief valve 11 is installed on the pressure relief line 12.

[0036] The input end of the refrigeration oil filling pipeline 3 is used to connect with the oil filling bottle 15, and the oil filling bottle 15 is used for injecting refrigeration oil. The output end of the refrigeration oil filling pipeline 3 is connected with the main connecting pipeline 2. A check valve 13 and a seventh switch control valve 14 are provided on the refrigeration oil filling pipeline 3.

[0037] The output end 17 of the exhaust pipeline is exposed to the outside and is used to discharge the nitrogen in the pipeline into the external air. A fifth switch control valve 16 is provided on the exhaust pipeline 4.

[0038] The nitrogen filling pipeline 5 is provided with a pressure reducing valve 19 and a fourth switch control valve 18 , and an input end 20 of the nitrogen filling pipeline is used to be connected to a nitrogen cylinder.

[0039] The vacuum pump 22 and the sixth switch control valve 21 are provided on the vacuum pumping pipeline 6 , and the air conditioner to be tested can be vacuumed by the vacuum pump 22 .

[0040] The input end of the refrigerant filling pipeline 7 is used to connect to the refrigerant tank 36. A check valve 13 is provided near the input end of the refrigerant filling pipeline 7, and an eighth switch control valve 39 is provided near the output end of the refrigerant filling pipeline 7.

[0041] The recovery pipeline 8 is provided with a drying filter 24, a compressor 28, two oil separators 29 and a heat exchanger, wherein the heat exchanger includes a plate heat exchanger 26 and a condenser 27. The input end of the first heat exchange channel of the plate heat exchanger 26 is connected to the input end of the refrigerant recovery pipeline 8. A second switch control valve 23, a drying filter 24, a check valve 13 and an electronic expansion valve 25 are sequentially arranged on the pipeline between the input end of the first heat exchange channel of the plate heat exchanger 26 and the input end of the refrigerant recovery pipeline 8. The output end of the first heat exchange channel of the plate heat exchanger 26 first passes through the first oil separator 29 and then is connected to the input end of the compressor 28. The oil discharge end of the first oil separator 29 is connected to the oil discharge tank 31, and a third switch control valve 30 is provided on the pipeline connected to the oil discharge tank 31. The output of compressor 28 passes through a second oil separator 29 before being connected to the input of the second heat exchange channel of plate heat exchanger 26. A temperature sensor 34 is provided at the output of compressor 28. The output of the second heat exchange channel of plate heat exchanger 26 is connected to the input of condenser 27. The output of condenser 27 is connected to the output of refrigerant recovery line 8. A check valve 13 is provided on the pipeline between the output of condenser 27 and the output of refrigerant recovery line 8. The output of recovery line 8 is connected to a refrigerant tank 36. Compressor 28 is equipped with a conventional pressure controller 32.

[0042] A refrigerant tank storage position is provided on the movable rack 42, and an electronic scale 35 is provided at the bottom of the refrigerant tank storage position. When refrigerant filling is required, the refrigerant tank 36 will be placed in the refrigerant tank storage position and located above the electronic scale 35. The refrigerant tank 36 will be weighed by the electronic scale 35, and the refrigerant filling amount can be judged by the reduction in weight during filling.

[0043] In this embodiment, a pressure gauge 33 is provided on the prototype connecting pipeline 1 and the compressor, and a pressure relief valve 37 and an exhaust valve 38 are also connected to the refrigerant tank 36 .

[0044] The multifunctional automatic auxiliary operation device of this embodiment can perform the following operations:

[0045] 1. Refrigerant recovery:

[0046] When recovering refrigerant from the air conditioner under test, the prototype connecting pipe 1 is connected to the air conditioner under test, the output end of the refrigerant recovery pipe 8 is connected to the refrigerant tank 36, the first to third on-off control valves 46, 23, and 30 are opened, and the remaining on-off control valves are closed. The compressor 28 and condenser 27 are then turned on, and the compressor 28 compresses the refrigerant, and the recovered refrigerant enters the refrigerant tank 36. When the refrigerant recovery reaches the preset recovery execution time, the pressure sensor 9 detects the pressure. If the pressure at this time is not less than 0.2 kPa, the multifunctional automatic auxiliary operation device will sound an alarm. If the pressure at this time is less than 0.2 kPa, the compressor 28 and condenser 27 will be turned off, completing the refrigerant recovery operation.

[0047] 2. Nitrogen filling and pressure maintenance:

[0048] The input end 20 of the nitrogen filling line is connected to the nitrogen cylinder. The fourth on-off control valve 18 is opened, and the other on-off control valves are closed. The nitrogen in the nitrogen cylinder will enter the air conditioner under test through the nitrogen filling line 5, the main connecting line 2, and the prototype connecting line 1. After the set time has elapsed, the pressure sensor 9 detects the pressure. If the pressure remains unchanged after the set pressure determination time, the nitrogen filling is determined to be complete. The pressure at this point is recorded as the pressure after the filling is completed, and the fourth on-off control valve 18 is closed. The pressure is then maintained. After the preset nitrogen filling pressure maintenance time has elapsed, the pressure sensor 9 detects the pressure and records the pressure at this point as the pressure after the maintenance. The difference between the pressure after the filling is completed and the pressure after the maintenance is obtained. If the difference is within the set range, the system is qualified. If it is outside the set range, the multifunctional automatic auxiliary operation device will sound an alarm. After the pressure maintenance is completed, the fifth on-off control valve 16 is opened to release the nitrogen. When the pressure sensor 9 detects a pressure close to atmospheric pressure, the fifth on-off control valve 16 is closed.

[0049] 3. Vacuuming and maintaining pressure:

[0050] The sixth switch control valve 21 is opened, the other switch control valves are closed, and the vacuum pump 22 is turned on. After the preset vacuuming time is reached, the pressure sensor 9 detects the pressure. If the pressure at this time is greater than or equal to the vacuuming lower limit, the multifunctional automatic auxiliary operation device will issue an alarm. If the pressure at this time is less than the vacuuming lower limit, the vacuuming operation is completed, the sixth switch control valve 21 and the vacuum pump 22 are closed, and the current pressure is recorded as the pressure after vacuuming. The pressure holding process then begins. After the preset vacuum holding time is reached, the pressure sensor 9 detects the pressure again and records it as the pressure after pressure holding. The difference between the pressure after vacuuming and the pressure after pressure holding is obtained. If the difference is within the set range, it is qualified. If it is outside the set range, the multifunctional automatic auxiliary operation device will indicate that the air conditioner pipeline under test is leaking.

[0051] 4. Refrigeration oil filling:

[0052] The refrigeration oil filling pipeline 3 is connected to the oil filling bottle 15, the seventh switch control valve 14 is opened, and the other switch control valves are closed. The refrigeration oil is injected into the air conditioner under test through the oil filling bottle 15. During the injection process, the operator observes the injected refrigeration oil through the observation window on the air conditioner under test. Finally, the refrigeration oil filling is completed and the seventh switch control valve 14 is closed.

[0053] 5. Refrigerant charging:

[0054] Refrigerant charging line 7 is connected to refrigerant tank 36. Refrigerant tank 36 can be a new refrigerant tank or one containing refrigerant after oil recovery and purification. Refrigerant tank 36 is located on electronic scale 35. Electronic scale 35 first measures the weight of the refrigerant tank and records it as the pre-charging weight. Then, eighth on-off control valve 39 is opened, while the remaining on-off control valves are closed. The refrigerant in refrigerant tank 36 enters the air conditioner under test through refrigerant charging line 7, isolation line 45, main connecting line 2, and prototype connecting line 1. Electronic scale 35 continues to measure the current weight, using the difference between the current weight and the pre-charging weight as the charging amount. When the charging amount reaches the preset amount, eighth on-off control valve 39 is closed, completing the refrigerant charging. If the refrigerant tank weight stops decreasing during the charging process, it indicates that the refrigerant in refrigerant tank 36 has been depleted and needs to be replaced. The multifunctional automatic auxiliary operating device will then issue a prompt to replace refrigerant tank 36.

[0055] 6. Refrigerant purification self-circulation:

[0056] The refrigerant recovered from the air conditioner under test and returned to the refrigerant tank through the refrigerant recovery operation is mixed with refrigeration oil, so the refrigerant needs to be circulated and purified. During the circulation purification, the second on-off control valve 23, the third on-off control valve 30, the eighth on-off control valve 39, the compressor 28, and the condenser 27 are opened, and the remaining on-off control valves are closed. The refrigerant mixed with refrigeration oil in the refrigerant tank 36 will be continuously circulated through the refrigerant charging pipeline 7 to the refrigerant recovery pipeline 8, and then flow back to the refrigerant tank 36. When the refrigerant mixed with refrigeration oil passes through the oil separator 29, the oil separator 29 separates the refrigeration oil mixed in the refrigerant and discharges it into the oil drain tank 31. After the circulation operation reaches the preset purification time, the second on-off control valve 23, the third on-off control valve 30, the eighth on-off control valve 39, the compressor 28, and the condenser 27 are closed, completing the refrigerant purification self-circulation operation.

[0057] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention, and the implementation methods of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structure of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in this field, without departing from the above basic technical ideas of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A multifunctional automatic auxiliary operating device suitable for air conditioner testing, characterized by: It includes a prototype connecting pipeline for connecting to the air conditioner under test, a main connecting pipeline, a refrigeration oil filling pipeline, a vacuum pipeline, a nitrogen filling pipeline, an exhaust pipeline, a refrigerant filling pipeline, a refrigerant recovery pipeline and an electronic scale. The refrigeration oil filling pipeline, vacuum pipeline, nitrogen filling pipeline, exhaust pipeline, refrigerant filling pipeline and refrigerant recovery pipeline are all connected to the prototype connecting pipeline through the main connecting pipeline, and switch control valves are respectively provided on the refrigeration oil filling pipeline, vacuum pipeline, nitrogen filling pipeline, exhaust pipeline, refrigerant filling pipeline and refrigerant recovery pipeline. A pressure sensor is provided at one end of the main connecting pipeline connected to the prototype connecting pipeline, a vacuum pump is provided on the vacuum pipeline, and a compressor and a heat exchanger are provided on the recovery pipeline. A refrigerant tank storage position is provided on the multifunctional automatic auxiliary operation device, and the electronic scale is provided at the bottom of the refrigerant tank storage position for weighing the refrigerant tank.

2. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: The multifunctional automatic auxiliary operation device also includes an isolation pipeline, through which the refrigerant filling pipeline and the refrigerant recovery pipeline are both connected to the main connecting pipeline, and a switch control valve is also provided on the isolation pipeline.

3. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: The refrigerant recovery pipeline is provided with an oil separator for separating the refrigerant and the refrigeration oil. The oil discharge end of the oil separator is connected to the oil discharge tank, and the separated refrigeration oil will be discharged to the oil discharge tank.

4. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 3, characterized in that: The heat exchanger includes a plate heat exchanger and a condenser. The input end of the first heat exchange channel of the plate heat exchanger is connected to the input end of the refrigerant recovery pipeline. The output end of the first heat exchange channel of the plate heat exchanger is first connected to the input end of the compressor after passing through the first oil separator. The output end of the compressor is first connected to the input end of the second heat exchange channel of the plate heat exchanger after passing through the second oil separator. The output end of the second heat exchange channel of the plate heat exchanger is connected to the input end of the condenser, and the output end of the condenser is connected to the output end of the refrigerant recovery pipeline.

5. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: A temperature sensor is provided on a pipeline close to the output end of the compressor.

6. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: A drying filter is provided near the input end of the refrigerant recovery pipeline.

7. The multifunctional automatic auxiliary operating device suitable for air conditioner testing according to claim 1, characterized in that: The refrigeration oil filling pipeline and the refrigerant filling pipeline are respectively provided with a check valve.

8. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: The main connecting pipeline is connected to a pressure relief pipeline, and a pressure relief valve is provided on the pressure relief pipeline.

9. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: A pressure reducing valve is provided on the nitrogen filling pipeline.

10. The multifunctional automatic auxiliary operation device suitable for air conditioner testing according to claim 1, characterized in that: The multifunctional automatic auxiliary operation device comprises a movable frame, and pipelines are all arranged on the movable frame.

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