Refrigerant recycling type electric air conditioner compressor detection table

Abstract

The utility model provides a refrigerant recycling type electric air-conditioning compressor detection bench, which comprises a bench body, a detection platform, a control device and a control device, the bench body is provided with a condenser, an evaporator, an expansion valve, a filtering and drying liquid storage device, a pipeline and an air conditioning system of a cut-off switch which are used for simulating an automobile air conditioning refrigeration system. The placing assembly is mounted on the top side of the table body, and the placing assembly is used for placing a tested compressor; and the vacuum pump is used for exhausting air of the tested compressor and the connecting pipeline. The automobile air-conditioning system detection device can simulate the actual working environment more accurately, improves the detection precision and reliability, and is characterized in that the whole detection process of an automobile air-conditioning system can be simulated in multiple detection processes, vacuumizing, refrigerant filling, compressor operation driving and rotating speed control are realized, and after the test is finished, the control system can be controlled according to the instruction of the control system. And the refrigerant is automatically recovered and stored in the equipment, and is hermetically stored and can be recycled for multiple times.

Description

Technical Field

[0001] The utility model relates to a refrigerant recovery and recycling type electric air-conditioner compressor testing platform. Background Art

[0002] New energy vehicles are generally equipped with electric air-conditioning compressors. Such electric air-conditioning compressors are powered by a high-voltage power supply and are controlled and driven by communication messages. They have a complex structure and a high failure rate. It is difficult for general automobile repair companies to detect and judge the performance of such electric air-conditioning compressors. Existing electric air-conditioning compressor detection equipment on the market still uses the design of traditional mechanical detection equipment, and uses air as the test medium during the detection process. Although the operation is simple, the physical properties of air and refrigerant are quite different, resulting in a large deviation between the detection results and the actual working state, making it impossible to accurately evaluate the performance of the electric air-conditioning compressor. Therefore, there is an urgent need for an electric air-conditioning compressor detection platform that can accurately simulate the actual working environment and working medium, truly reflect the various performance indicators of the electric compressor, and solve the problem of refrigerant leakage during the detection process. Utility Model Content

[0003] In order to solve the technical problem that the existing electric air-conditioning compressor testing equipment on the market still uses the design of traditional mechanical testing equipment, and uses air as the test medium during the testing process, although the operation is simple, due to the large difference in the physical properties of air and refrigerant, there is a large deviation between the test result and the actual working state, and the performance of the electric air-conditioning compressor cannot be accurately evaluated, a refrigerant recovery and recycling electric air-conditioning compressor testing platform is provided.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a refrigerant recovery and recycling type electric air conditioner compressor testing platform, the refrigerant recovery and recycling type electric air conditioner compressor testing platform comprises:

[0006] A platform 33, wherein the platform 33 is equipped with a condenser 2, an evaporator 5, an expansion valve 4, a filter-drying liquid storage tank 3, a pipeline and an air conditioning system for simulating an automobile air conditioning refrigeration system;

[0007] A placement component, the placement component is installed on the top side of the platform 33, and the placement component is used to place the compressor 1 to be tested;

[0008] A vacuum pump 14 is used to remove air from the compressor 1 and the connecting pipelines.

[0009] Furthermore, casters 34 are fixedly installed at the four corners of the bottom end of the platform 33, and a high-voltage power supply 8 for driving the tested compressor 1 and a low-voltage power supply 9 for providing inverter frequency conversion speed regulation power for the compressor, a test platform control system 10, a display system 11, and a detection system 13 are installed in the platform 33. A control system 10 for controlling the high-voltage power supply 8 to pre-charge power, cut off discharge, send drive messages, collect information control valve 7, switch working mode, and operate buttons 12 for manual and automatic selection of functions is installed on the top of the platform 33. A detection system 13 for detecting short circuit and open circuit of the control circuit board of the tested compressor 1, high-voltage insulation performance, sealing performance, and temperature; a display panel for a voltmeter, an ammeter, and a thermometer for displaying and collecting information on various performance indicators of the tested compressor 1; a control valve 7 for switching the refrigeration pipeline; and a built-in compressor 6 for recovering refrigerant are installed.

[0010] Further, the air conditioning system is connected to the high-pressure stop valve 29, the control valve 7, the condenser 2, the filter-drying liquid storage device 3, the expansion valve 4, the evaporator 5, the control valve 7, and the low-pressure stop valve 30 in sequence through pipelines. The air conditioning system is provided with temperature sensors on the exhaust port, the air inlet, the condenser 2, and the evaporator 5 of the measured compressor 1. The condenser 2 is provided with a condenser temperature sensor 21, the evaporator 5 is provided with an evaporator temperature sensor 22, the air conditioning system is provided with a system temperature sensor 23, and the exhaust port and the air inlet of the measured compressor 1 are respectively provided with an exhaust temperature sensor 24 and an intake temperature sensor 25;

[0011] The high-pressure stop valve 29 is connected to the high-pressure test hose 31 of the compressor 1 under test, and is connected to the air inlet of the condenser 2 inside the device through the control valve 7; the low-pressure stop valve 30 is connected to the low-pressure test hose 32 of the compressor 1 under test, and is connected to the exhaust port of the evaporator 5 inside the device through the control valve 7.

[0012] Furthermore, the filter-dryer liquid storage tank 3 is disposed between the condenser 2 and the expansion valve 4, and is used for filtering, drying, collecting and storing the refrigerant for testing.

[0013] Furthermore, the control valve 7 is composed of a plurality of solenoid valves arranged and combined according to control logic, and can control the conduction, cutoff and switching of the pipeline; the air-conditioning system is provided with a filter-drying liquid storage tank 3 and an expansion valve 4 for controlling the refrigerant flow rate between the condenser 2 and the evaporator 5; the air-conditioning system is provided with a high-pressure pressure gauge 26 between the control valve 7 and the condenser 2, a low-pressure pressure gauge 27 between the control valve 7 and the evaporator 5, a system pressure gauge 28 between the condenser 2 and the evaporator 5, and a vacuum channel is provided between the control valve 7 and the high-pressure shut-off valve 29 and between the control valve 7 and the low-pressure shut-off valve 30, which is connected to the vacuum pump 14 through the intermediate solenoid valve 19 and the vacuum solenoid valve 20.

[0014] Furthermore, the control system 10 is connected to the high-voltage power supply 8 and the high-voltage power supply cable of the tested compressor 1 through the operating button 12 and the relay, providing the tested compressor with pre-charge power supply for the high-voltage power supply 8 and discharging electric energy when the power is cut off; the control system 10 is connected to the vacuum pump 14 and the built-in compressor 6 through the operating button 12 and the relay, and operates the vacuum pump 14 and the compressor to start and stop according to the operating button 12 or the control system 10 instruction; the control system 10 is connected to the control valve 7 through the operating button 12 and the relay, and according to the operating button 12 or the control system 10 instruction, the high-pressure solenoid valve 15, the auxiliary high-pressure solenoid valve 17, the low-pressure solenoid valve 16, the auxiliary low-pressure solenoid valve 18, the intermediate solenoid valve 19, and the vacuum solenoid valve 20 on the control valve 7 are actuated to switch the test pipeline and the recovery pipeline; the control system 10 includes a computer system for sending CAN / LIN drive messages and PWM control communications for electric compressors, sending corresponding drive messages according to different models of compressors, and establishing contact with external expansion devices through the CAN / LIN interface on the control system 10.

[0015] Furthermore, the detection system 13 includes an instrument for detecting short circuit and open circuit of the control circuit board, which is connected to the positive and negative poles of the low-voltage power supply 9 of the measured compressor, and detects whether the positive and negative poles of the low-voltage power supply 9 of the measured compressor have short circuit and open circuit faults according to the operating button 12 or the instruction of the control system 10. The detection system 13 collects feedback information and displays it through the display panel; the detection system 13 includes an instrument for detecting high-voltage insulation performance of the control circuit board, which is connected to the positive and negative poles of the high-voltage input power supply of the measured compressor 1, and detects whether the high-voltage power supply 8 of the measured compressor has insulation faults according to the operating button 12 or the instruction of the control system 10; the detection system 13 includes a refrigerant leak detector, which detects whether the measured compressor 1 has a sealing fault according to the operating button 12 or the instruction of the control system 10.

[0016] Furthermore, the control system 10 is provided with a voltmeter and an ammeter connected to the high voltage power supply 8 and the low voltage power supply 9 to display the power consumption of the high voltage power supply 8 and the low voltage power supply 9 in real time.

[0017] Furthermore, the built-in compressor 6 is connected to the auxiliary high-pressure solenoid valve 17 through the control valve 7, and the air inlet is connected to the auxiliary low-pressure solenoid valve 18 of the control valve 7. According to the operation button 12 and the control system 10 instructions, it switches to the refrigerant recovery mode.

[0018] Further, the placement assembly includes an electric push rod 35, a push seat 36, a cross plate 37, a hydraulic cylinder 38 and a placement table 39, the electric push rod 35 is fixedly mounted on the top side surface of the table body 33, the push seat 36 is fixedly mounted on the output end of the electric push rod 35, the cross plate 37 is fixedly mounted on the top side surface of the push seat 36, the hydraulic cylinder 38 is fixedly mounted on the top side surface of the cross plate 37, and the placement table 39 is fixedly mounted on the output end of the hydraulic cylinder 38;

[0019] The top surface of the platform 33 is provided with a limiting slide groove 3301 , in which a slide seat 40 with a T-shaped structure in the front side cross section is slidably connected, and the top of the slide seat 40 is fixedly connected to the bottom side of the push seat 36 .

[0020] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0021] The positive and progressive effects of the utility model are:

[0022] The above-mentioned refrigerant recovery and recycling type electric air-conditioning compressor test bench can simulate the actual working environment more accurately, improve the accuracy and reliability of the test, and its greatest feature is that it can simulate the entire process of automobile air-conditioning system testing during multiple tests, realize vacuuming, refrigerant filling, drive the compressor to operate, and control the speed. Moreover, after the test is completed, it can automatically recover the refrigerant and store it inside the equipment according to the control system instructions, and seal it for multiple cycles, so as to avoid the refrigerant from leaking out during the test, causing waste of resources and air pollution, and protect the operator from frostbite and irritation of the refrigerant.

[0023] And by the action of the arranged placement component, it is convenient to adjust the height position of the placement table, to adjust the height of the tested compressor, and to lift the tested compressor to the position of the testing table, thereby reducing the labor intensity of the workers and facilitating the testing and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model of the refrigerant recovery and recycling type electric air-conditioning compressor testing platform.

[0025] Figure 2 The utility model is a schematic diagram of the top view of the surface of the refrigerant recovery and recycling type electric air-conditioning compressor testing platform.

[0026] Figure 3 It is a schematic cross-sectional view of the front and side of the refrigerant recovery and recycling type electric air-conditioning compressor testing platform of the utility model.

[0027] Figure 4This is a connection principle diagram of the utility model refrigerant recovery and recycling type electric air-conditioning compressor testing platform.

[0028] Figure 5 The utility model is a schematic diagram of the connection structure of the inner wall surface on the right side of the refrigerant recovery and recycling type electric air-conditioning compressor testing platform.

[0029] Description of Reference Numerals

[0030] 1. The compressor to be tested; 2. Condenser; 3. Filter-drying liquid storage tank; 4. Expansion valve; 5. Evaporator; 6. Built-in compressor; 7. Control valve; 8. High-voltage power supply; 9. Low-voltage power supply; 10. Control system; 11. Display system; 12. Operation button; 13. Detection system; 14. Vacuum pump; 15. High-voltage solenoid valve; 16. Low-voltage solenoid valve; 17. Auxiliary high-voltage solenoid valve; 18. Auxiliary low-voltage solenoid valve; 19. Intermediate solenoid valve; 20. Vacuum solenoid valve; 21. Condenser temperature sensor; 22. Evaporator temperature sensor; 23. System temperature sensor; 24. Exhaust temperature sensor; 25. Intake temperature sensor; 26. High-pressure pressure gauge; 27. Low-pressure pressure gauge; 28. System pressure gauge; 29. ​​High-pressure stop valve; 30. Low-pressure stop valve; 31. High-pressure test hose; 32. Low-pressure test hose; 33. Platform; 3301. Limit slide; 34. Casters; 35. Electric push rod; 36. Push seat; 37. Cross plate; 38. Hydraulic cylinder; 39. Placement table; 40. Slide seat. DETAILED DESCRIPTION

[0031] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0032] like Figure 1-5 As shown, the refrigerant recovery and recycling type electric air-conditioning compressor test bench comprises:

[0033] A platform 33, wherein the platform 33 is equipped with a condenser 2, an evaporator 5, an expansion valve 4, a filter-drying liquid storage tank 3, a pipeline and an air conditioning system for simulating an automobile air conditioning refrigeration system;

[0034] A placement component, the placement component is installed on the top side of the platform 33, and the placement component is used to place the compressor 1 to be tested;

[0035] A vacuum pump 14 is used to remove air from the compressor 1 and the connecting pipelines.

[0036] Furthermore, casters 34 are fixedly installed at the four corners of the bottom end of the platform 33, and a high-voltage power supply 8 for driving the tested compressor 1 and a low-voltage power supply 9 for providing inverter frequency conversion speed regulation power for the compressor, a test platform control system 10, a display system 11, and a detection system 13 are installed in the platform 33. A control system 10 for controlling the high-voltage power supply 8 to pre-charge power, cut off discharge, send drive messages, collect information control valve 7, switch working mode, and operate buttons 12 for manual and automatic selection of functions is installed on the top of the platform 33. A detection system 13 for detecting short circuit and open circuit of the control circuit board of the tested compressor 1, high-voltage insulation performance, sealing performance, and temperature; a display panel for a voltmeter, an ammeter, and a thermometer for displaying and collecting information on various performance indicators of the tested compressor 1; a control valve 7 for switching the refrigeration pipeline; and a built-in compressor 6 for recovering refrigerant are installed.

[0037] Further, the air conditioning system is connected to the high-pressure stop valve 29, the control valve 7, the condenser 2, the filter-drying liquid storage device 3, the expansion valve 4, the evaporator 5, the control valve 7, and the low-pressure stop valve 30 in sequence through pipelines. The air conditioning system is provided with temperature sensors on the exhaust port, the air inlet, the condenser 2, and the evaporator 5 of the measured compressor 1. The condenser 2 is provided with a condenser temperature sensor 21, the evaporator 5 is provided with an evaporator temperature sensor 22, the air conditioning system is provided with a system temperature sensor 23, and the exhaust port and the air inlet of the measured compressor 1 are respectively provided with an exhaust temperature sensor 24 and an intake temperature sensor 25;

[0038] The high-pressure stop valve 29 is connected to the high-pressure test hose 31 of the compressor 1 under test, and is connected to the air inlet of the condenser 2 inside the device through the control valve 7; the low-pressure stop valve 30 is connected to the low-pressure test hose 32 of the compressor 1 under test, and is connected to the exhaust port of the evaporator 5 inside the device through the control valve 7.

[0039] Furthermore, the filter-dryer liquid storage tank 3 is disposed between the condenser 2 and the expansion valve 4, and is used for filtering, drying, collecting and storing the refrigerant for testing.

[0040] Furthermore, the control valve 7 is composed of a plurality of solenoid valves arranged and combined according to control logic, and can control the conduction, cutoff and switching of the pipeline; the air-conditioning system is provided with a filter-drying liquid storage tank 3 and an expansion valve 4 for controlling the refrigerant flow rate between the condenser 2 and the evaporator 5; the air-conditioning system is provided with a high-pressure pressure gauge 26 between the control valve 7 and the condenser 2, a low-pressure pressure gauge 27 between the control valve 7 and the evaporator 5, a system pressure gauge 28 between the condenser 2 and the evaporator 5, and a vacuum channel is provided between the control valve 7 and the high-pressure shut-off valve 29 and between the control valve 7 and the low-pressure shut-off valve 30, which is connected to the vacuum pump 14 through the intermediate solenoid valve 19 and the vacuum solenoid valve 20.

[0041] Furthermore, the control system 10 is connected to the high-voltage power supply 8 and the high-voltage power supply cable of the tested compressor 1 through the operating button 12 and the relay, providing the tested compressor with pre-charge power supply for the high-voltage power supply 8 and discharging electric energy when the power is cut off; the control system 10 is connected to the vacuum pump 14 and the built-in compressor 6 through the operating button 12 and the relay, and operates the vacuum pump 14 and the compressor to start and stop according to the operating button 12 or the control system 10 instruction; the control system 10 is connected to the control valve 7 through the operating button 12 and the relay, and according to the operating button 12 or the control system 10 instruction, the high-pressure solenoid valve 15, the auxiliary high-pressure solenoid valve 17, the low-pressure solenoid valve 16, the auxiliary low-pressure solenoid valve 18, the intermediate solenoid valve 19, and the vacuum solenoid valve 20 on the control valve 7 are actuated to switch the test pipeline and the recovery pipeline; the control system 10 includes a computer system for sending CAN / LIN drive messages and PWM control communications for electric compressors, sending corresponding drive messages according to different models of compressors, and establishing contact with external expansion devices through the CAN / LIN interface on the control system 10.

[0042] Furthermore, the detection system 13 includes an instrument for detecting short circuit and open circuit of the control circuit board, which is connected to the positive and negative poles of the low-voltage power supply 9 of the measured compressor, and detects whether the positive and negative poles of the low-voltage power supply 9 of the measured compressor have short circuit and open circuit faults according to the operating button 12 or the instruction of the control system 10. The detection system 13 collects feedback information and displays it through the display panel; the detection system 13 includes an instrument for detecting high-voltage insulation performance of the control circuit board, which is connected to the positive and negative poles of the high-voltage input power supply of the measured compressor 1, and detects whether the high-voltage power supply 8 of the measured compressor has insulation faults according to the operating button 12 or the instruction of the control system 10; the detection system 13 includes a refrigerant leak detector, which detects whether the measured compressor 1 has a sealing fault according to the operating button 12 or the instruction of the control system 10.

[0043] Furthermore, the control system 10 is provided with a voltmeter and an ammeter connected to the high voltage power supply 8 and the low voltage power supply 9 to display the power consumption of the high voltage power supply 8 and the low voltage power supply 9 in real time.

[0044] Furthermore, the built-in compressor 6 is connected to the auxiliary high-pressure solenoid valve 17 through the control valve 7, and the air inlet is connected to the auxiliary low-pressure solenoid valve 18 of the control valve 7. According to the operation button 12 and the control system 10 instructions, it switches to the refrigerant recovery mode.

[0045] Further, the placement assembly includes an electric push rod 35, a push seat 36, a cross plate 37, a hydraulic cylinder 38 and a placement table 39, the electric push rod 35 is fixedly mounted on the top side surface of the table body 33, the push seat 36 is fixedly mounted on the output end of the electric push rod 35, the cross plate 37 is fixedly mounted on the top side surface of the push seat 36, the hydraulic cylinder 38 is fixedly mounted on the top side surface of the cross plate 37, and the placement table 39 is fixedly mounted on the output end of the hydraulic cylinder 38;

[0046] The top surface of the platform 33 is provided with a limiting slide groove 3301 , in which a slide seat 40 with a T-shaped structure in the front side cross section is slidably connected, and the top of the slide seat 40 is fixedly connected to the bottom side of the push seat 36 .

[0047] The high-voltage power supply 8 is powered by 220V AC and outputs high-voltage DC. The voltage range covers the rated working voltage of the electric air-conditioning compressor of existing new energy electric vehicles. The high-voltage power supply 8 can adjust the supply DC voltage and current according to the measured rated voltage of the electric air-conditioning compressor.

[0048] The low-voltage power supply 9 is powered by 220V AC power, and the inverter conversion provides 5V / 12V / 24V DC power, which is respectively connected to the control circuit board connector of the compressor 1 under test, and provides working power for the compressor 1 under test, the test bench control valve 7, the control system 10, the display system 11, and the detection system 13.

[0049] In use, 1. Preparation stage: place the tested compressor 1 on the platform 33 and fix it, connect the high and low pressure test hoses 32 to the compressor inlet and exhaust ports respectively, connect the high voltage power supply 8 line and the low voltage power supply 9 line of the tested compressor 1 to prepare for the test;

[0050] 2. Static test stage: Press the low-voltage short-circuit test button, the control system 10 connects the test instrument to the positive and negative poles of the low-voltage power supply 9 of the tested compressor 1, and displays the test results through the display system 11;

[0051] 3. Press the high-voltage short-circuit test button, the control system 10 connects the test instrument to the positive and negative electrodes of the high-voltage power supply of the tested compressor 1, and displays the test results through the display system 11;

[0052] 4. Press the high-voltage insulation test button, the control system 10 connects the test instrument to the positive and negative electrodes of the high-voltage power supply of the tested compressor 1 and the outer shell ground respectively, and displays the test results through the display system 11;

[0053] 5. Dynamic test stage: After the static test is completed, the vacuum operation button is pressed, and the control system 10 will open the intermediate solenoid valve 19 and the vacuum solenoid valve 20, start the vacuum pump 14, and extract the air inside the test hose and the tested compressor 1 and maintain the vacuum state;

[0054] 6. Press the pause button, the control system 10 closes the intermediate solenoid valve 19 and the vacuum solenoid valve 20, and observes whether the vacuum degree displayed by the high-pressure pressure gauge 26 and the low-pressure pressure gauge 27 changes, and judges whether the pipeline is tightly connected, whether the tested compressor 1 has poor sealing, and possible leakage;

[0055] 7. After confirming that the tested compressor 1 does not have leakage, press the dynamic test operation button, and the control system 10 will connect the high-voltage power supply 8 and the low-voltage power supply 9 to provide power to the tested compressor 1, open the high-voltage solenoid valve 15 and the low-voltage solenoid valve 16 to connect the tested compressor 1 to the air conditioning system inside the platform 33, and send a startup message of the corresponding model to drive the tested compressor 1 to start operation;

[0056] 8. During the operation of the tested compressor 1, the display system 11 displays the data from the condenser temperature sensor 21, the evaporator temperature sensor 22, the system temperature sensor 23, the exhaust temperature sensor 24, the intake temperature sensor 25, the high pressure gauge 26, the low pressure gauge 27, and the system pressure gauge 28 on the display panel in real time. The operator can adjust the working state of the compressor through instructions or operating switches, and judge whether the performance of the tested compressor 1 is normal.

[0057] 9. During the detection process, the refrigerant leak detection is carried out simultaneously. If a small amount of leakage occurs during the operation of the compressor 1 under test, the detection system 13 sends the collected information to the display system 11 and alarms;

[0058] 10. Refrigerant recovery stage: After the test is completed, press the refrigerant recovery operation button, the control system 10 will close the high-pressure solenoid valve 15 and the low-pressure solenoid valve 16 to cut off the connection between the tested compressor 1 and the internal air-conditioning system, open the auxiliary high-pressure solenoid valve 17 and the auxiliary low-pressure solenoid valve 18, connect the test pipeline and the tested compressor to the pipeline of the built-in compressor 6, and start the built-in compressor 6, and suck the refrigerant in the tested compressor 1 and the test pipeline into the internal air-conditioning system, and cool and liquefy it through the condenser 2, and store it in the filter-drying liquid storage tank 3;

[0059] 11. Safe unloading stage: The tested compressor 1 and the test hose are in a vacuum state. At this time, the control system 10 cuts off the auxiliary high-pressure solenoid valve 17 and the auxiliary low-pressure solenoid valve 18, cuts off the pipeline connection between the tested compressor 1 and the test bench, and cuts off the high-voltage power supply 8 and the low-voltage power supply 9 to discharge the electric energy;

[0060] 12. When the high voltage power supply 8 discharges electric energy to the low voltage power supply 9 and reaches the safety threshold, the display system 11 prompts the operator to remove the connecting wire and the test hose, and the example is now completed;

[0061] 13. It should be noted that this implementation example only provides a specific and clear description of the technical scheme and technical features of the present application. The above-mentioned embodiment only demonstrates the manual operation process. The utility model can realize the automatic detection and recovery of the entire process of refrigerant through automatic control, and can also customize certain functions through mode setting, or selectively combine them for special performance testing. The structural features and control methods of this test bench, whether it is manual operation, automatic programmed control or free combination of customized functions, are all within the scope of the claims of the present utility model patent application.

[0062] The utility model is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the utility model, but these changes and modifications are within the protection scope of the utility model.

Claims

1. A refrigerant recovery and recycling type electric air conditioner compressor testing platform, characterized in that: The refrigerant recovery and recycling type electric air-conditioning compressor testing platform comprises: A platform (33), wherein the platform (33) is equipped with a condenser (2), an evaporator (5), an expansion valve (4), a filter-drying liquid storage device (3), a pipeline and an air conditioning system for simulating an automobile air conditioning refrigeration system; A placement component, the placement component is installed on the top side of the platform (33), and the placement component is used to place the compressor (1) to be tested; A vacuum pump (14) is used to remove air from the compressor (1) being tested and the connecting pipelines.

2. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 1, characterized in that: Casters (34) are fixedly installed at the four corners of the bottom of the platform (33). A high-voltage power supply (8) for driving the tested compressor (1) and a low-voltage power supply (9) for providing inverter frequency conversion speed regulation electric energy for the compressor, a test platform control system (10), a display system (11), and a test system (13) are installed in the platform (33). A control system (10) for controlling the pre-charging power supply of the high-voltage power supply (8), cutting off the discharge, sending the drive message, collecting information control valve (7), switching the working mode, and a manipulation button (12) for manual and automatic function selection is installed at the top of the platform (33). A detection system (13) for detecting the short circuit and open circuit of the control circuit board of the tested compressor (1), the high-voltage insulation performance, the sealing performance, and the temperature, a display panel for displaying and collecting various performance index information of the tested compressor (1), a control valve (7) for switching the refrigeration pipeline, and a built-in compressor (6) for recovering the refrigerant are installed.

3. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 1, characterized in that: The air conditioning system is connected in sequence to a high-pressure stop valve (29), a control valve (7), a condenser (2), a filter-drying liquid storage device (3), an expansion valve (4), an evaporator (5), a control valve (7), and a low-pressure stop valve (30) through pipelines. The air conditioning system is provided with temperature sensors on the exhaust port, the air inlet, the condenser (2), and the evaporator (5) of the tested compressor (1). The condenser (2) is provided with a condenser temperature sensor (21), the evaporator (5) is provided with an evaporator temperature sensor (22), the air conditioning system is provided with a system temperature sensor (23), and the exhaust port and the air inlet of the tested compressor (1) are provided with an exhaust temperature sensor (24) and an intake temperature sensor (25), respectively. The high-pressure stop valve (29) is connected to the high-pressure test hose (31) of the tested compressor (1), and is connected to the air inlet of the condenser (2) inside the device through the control valve (7); the low-pressure stop valve (30) is connected to the low-pressure test hose (32) of the tested compressor (1), and is connected to the exhaust port of the evaporator (5) inside the device through the control valve (7).

4. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 1, characterized in that: The filter-drying liquid storage device (3) is arranged between the condenser (2) and the expansion valve (4) and is used for filtering, drying, collecting and storing the refrigerant for testing.

5. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 3, characterized in that: The control valve (7) is composed of a plurality of electromagnetic valves arranged and combined according to control logic, and can control the conduction, shutoff and switching of the pipeline; the air-conditioning system is provided with a filter-drying liquid storage device (3) and an expansion valve (4) for controlling the flow of refrigerant between the condenser (2) and the evaporator (5); the air-conditioning system is provided with a high-pressure pressure gauge (26) between the control valve (7) and the condenser (2), a low-pressure pressure gauge (27) between the control valve (7) and the evaporator (5), a system pressure gauge (28) between the condenser (2) and the evaporator (5), and a vacuum channel is provided between the control valve (7) and the high-pressure shut-off valve (29) and between the control valve (7) and the low-pressure shut-off valve (30), and is connected to the vacuum pump (14) through an intermediate electromagnetic valve (19) and a vacuum electromagnetic valve (20).

6. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 2, characterized in that: The control system (10) is connected between the high-voltage power supply (8) and the high-voltage power supply cable of the tested compressor (1) through an operating button (12) and a relay, and provides pre-charging power to the high-voltage power supply (8) of the tested compressor, and discharges the electric energy when the power is cut off; the control system (10) is connected to the vacuum pump (14) and the built-in compressor (6) through an operating button (12) and a relay, and operates the vacuum pump (14) and the compressor to start and stop according to the operating button (12) or the control system (10); the control system (10) is connected to the control valve (7) through an operating button (12) and a relay, and operates the control valve (7) according to the operating button (12) and the relay. The control button (12) or the control system (10) commands the high-pressure solenoid valve (15), the auxiliary high-pressure solenoid valve (17), the low-pressure solenoid valve (16), the auxiliary low-pressure solenoid valve (18), the intermediate solenoid valve (19), and the vacuum solenoid valve (20) on the control valve (7) to operate, thereby switching the test pipeline and the recovery pipeline; the control system (10) comprises a computer system for sending CAN / LIN drive messages and PWM control communications of the electric compressor, sending corresponding drive messages according to different models of compressors, and establishing communication with external expansion equipment through the CAN / LIN interface on the control system (10).

7. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 2, characterized in that: The detection system (13) includes an instrument for detecting short circuit and open circuit of the control circuit board, which is connected to the positive and negative poles of the low-voltage power supply (9) of the measured compressor, and detects whether the positive and negative poles of the low-voltage power supply (9) of the measured compressor have a short circuit or open circuit fault according to the operating button (12) or the control system (10) instruction. The detection system (13) collects feedback information and displays it through a display panel; the detection system (13) includes an instrument for detecting high-voltage insulation performance of the control circuit board, which is connected to the positive and negative poles of the high-voltage input power supply of the measured compressor (1), and detects whether the high-voltage power supply (8) of the measured compressor has an insulation fault according to the operating button (12) or the control system (10) instruction; the detection system (13) includes a refrigerant leak detector, which detects whether the measured compressor (1) has a sealing fault according to the operating button (12) or the control system (10) instruction.

8. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 2, characterized in that: The control system (10) is provided with a voltmeter and an ammeter connected to the high-voltage power supply (8) and the low-voltage power supply (9), and displays the power consumption of the high-voltage power supply (8) and the low-voltage power supply (9) in real time.

9. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 2, characterized in that: The built-in compressor (6) is connected to the auxiliary high-pressure solenoid valve (17) through the control valve (7), and the air inlet is connected to the auxiliary low-pressure solenoid valve (18) of the control valve (7). According to the instructions of the operating button (12) and the control system (10), it switches to the refrigerant recovery mode.

10. The refrigerant recovery and recycling type electric air conditioner compressor testing platform as claimed in claim 1, characterized in that: The placement assembly comprises an electric push rod (35), a pushing seat (36), a cross plate (37), a hydraulic cylinder (38) and a placement table (39); the electric push rod (35) is fixedly mounted on the top side surface of the table body (33); the pushing seat (36) is fixedly mounted on the output end of the electric push rod (35); the cross plate (37) is fixedly mounted on the top side surface of the pushing seat (36); the hydraulic cylinder (38) is fixedly mounted on the top side surface of the cross plate (37); and the placement table (39) is fixedly mounted on the output end of the hydraulic cylinder (38); A limiting slide groove (3301) is provided on the top side surface of the platform (33), and a slide seat (40) having a T-shaped structure in the front side cross section is slidably connected in the limiting slide groove (3301), and the top end of the slide seat (40) is fixedly connected to the bottom side of the pushing seat (36).

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