Compressor testing device and method

Abstract

The invention relates to the technical field of compressor testing, in particular to a compressor testing device and method. The compressor testing device comprises a mounting rack, a running-in testing assembly, a vacuum assembly and a refrigerant loading assembly. The running-in test assembly, the vacuum assembly and the refrigerant loading assembly are all connected with the mounting rack, the mounting rack is provided with a compressor loading table, and the compressor loading table is provided with at least two mounting positions used for loading a compressor to be tested; the running-in test assembly is used for selecting one to be communicated with the compressor on the compressor loading table so as to carry out running-in test on the compressor; the vacuum assembly is selectively communicated with the compressor on the compressor loading table through the running-in test assembly so as to vacuumize the compressor; the refrigerant loading assembly is selectively communicated with the compressor on the compressor loading table through the running-in test assembly so as to inject a refrigerant to the compressor. According to the compressor testing device and method, operation steps in the testing process can be reduced, and the testing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor testing, and more particularly, to a compressor testing device and method. Background Art

[0002] The running-in test of a compressor is an operating test carried out before the compressor leaves the factory or at the initial stage of its operation. The purpose is to make all components of the compressor, especially the friction pairs, such as bearings, gears, rotors, etc., reach the best matching state through a certain period of operation under simulated actual working conditions, reduce wear, and improve the reliability and service life of the compressor. However, the existing testing devices have problems such as many operation steps and low testing efficiency. Summary of the Invention

[0003] The objectives of the present invention include providing a compressor testing device and method that can reduce the operation steps during the testing process and improve the testing efficiency.

[0004] Embodiments of the present invention may be implemented as follows:

[0005] In a first aspect, the present invention provides a compressor testing device, which includes a mounting frame, a running-in testing component, a vacuum component, and a refrigerant loading component;

[0006] The running-in testing component, the vacuum component, and the refrigerant loading component are all connected to the mounting frame, and a compressor loading platform is configured on the mounting frame. The compressor loading platform is configured with at least two mounting positions for loading the compressors to be tested;

[0007] The running-in testing component is used to selectively communicate with the compressors on the compressor loading platform to perform running-in tests on the compressors;

[0008] The vacuum component selectively communicates with the compressors on the compressor loading platform through the running-in testing component to evacuate the compressors;

[0009] The refrigerant loading component selectively communicates with the compressors on the compressor loading platform through the running-in testing component to fill the compressors with refrigerant.

[0010] In an alternative embodiment, the running-in testing component includes a main testing passage and two sub-testing passages;

[0011] The main testing passage is configured with a condenser, an expansion valve, and an evaporator;

[0012] The two sub-testing passages are connected in parallel to the main testing passage, and first on-off control valves are configured at both ends of each sub-testing passage connected to the main testing passage; the sub-testing passages are used to communicate with the compressors to be tested;

[0013] Among them, one of the two sub-testing passages is selectively conducted with the main testing passage.

[0014] In an alternative embodiment, the main test path is configured with a first high-pressure sensor.

[0015] In an alternative embodiment, a low-pressure pressure sensor is configured at the intake end of each sub-test path, and a high-pressure pressure sensor is provided at the exhaust end thereof;

[0016] The mounting rack is further configured with a monitoring station located above the compressor loading station. The monitoring station is configured with a low-pressure pressure gauge group communicated with the intake end of the sub-test path and a high-pressure pressure gauge group communicated with the exhaust end of the sub-test path.

[0017] In an alternative embodiment, the vacuum assembly includes a vacuum pump, a main vacuum path, and two vacuum branches;

[0018] One end of the main vacuum path is communicated with the vacuum pump, and the other end thereof is communicated with the two vacuum branches, and the two vacuum branches are respectively communicated with the two sub-test paths;

[0019] The main vacuum path is configured with a second on-off control valve, and the two vacuum branches are both provided with a third on-off control valve.

[0020] In an alternative embodiment, the refrigerant loading assembly includes a refrigerant tank, a weighing device, a main refrigerant loading path, and two refrigerant loading branches;

[0021] The weighing device is disposed on the mounting rack and is used for measuring the weight of the refrigerant tank;

[0022] One end of the main refrigerant loading path is communicated with the refrigerant tank, and the other end of the main refrigerant loading path is communicated with the two refrigerant loading branches, and the two refrigerant loading branches are respectively communicated with the two sub-test paths;

[0023] The main refrigerant loading path is configured with a fourth on-off control valve, and the two refrigerant loading branches are both configured with a fifth on-off control valve.

[0024] In an alternative embodiment, the compressor test device further includes a refrigerant recovery pipeline, a refrigerant recovery compressor, an oil separator, and a heat exchanger;

[0025] Both ends of the refrigerant recovery pipeline are respectively communicated with the main refrigerant loading path and the refrigerant tank. The refrigerant recovery compressor, the oil separator, and the heat exchanger are all disposed on the refrigerant recovery pipeline; a sixth on-off control valve is provided on the refrigerant recovery pipeline;

[0026] Wherein, the refrigerant recovery pipeline is used for selectively communicating with the compressor to recover the refrigerant in the compressor and the pipelines communicated therewith.

[0027] In an alternative embodiment, the main refrigerant loading path is configured with a second high-pressure sensor.

[0028] In an alternative embodiment, the mounting frame is configured with a placement table, the placement table is located below the compressor loading table, and the running-in test assembly, the vacuum assembly, and the refrigerant charging assembly are all mounted on the placement table.

[0029] In a second aspect, the present invention provides a compressor testing method, which is implemented by using the above-mentioned compressor testing device, and includes:

[0030] Place a compressor to be tested in the installation position for loading the compressor to be tested;

[0031] Connect the compressor to be tested to the vacuum assembly to evacuate the compressor;

[0032] After the vacuum test is completed, connect the compressor that has completed the vacuum test to the refrigerant charging assembly to charge the compressor with refrigerant;

[0033] Connect the compressor after refrigerant charging to the running-in test assembly, and perform a running-in test on the compressor through the running-in test assembly;

[0034] While implementing the foregoing steps, load another compressor to be tested into another installation position for loading the compressor to be tested, and after the running-in test of the compressor is completed, remove the compressor that has completed the running-in test or evacuate the refrigerant inside it and then remove it, and perform vacuum pumping, refrigerant charging, and running-in testing on the newly loaded compressor to be tested according to the above steps;

[0035] Repeat the above steps.

[0036] The beneficial effects of the compressor testing device and method provided by the embodiments of the present invention include:

[0037] The compressor testing device includes a mounting frame, a running-in test assembly, a vacuum assembly, and a refrigerant charging assembly; the running-in test assembly, the vacuum assembly, and the refrigerant charging assembly are all connected to the mounting frame, and the mounting frame is configured with a compressor loading table, and the compressor loading table is configured with at least two installation positions for loading compressors to be tested; the running-in test assembly is used to selectively communicate with the compressors on the compressor loading table to perform a running-in test on the compressors; the vacuum assembly selectively communicates with the compressors on the compressor loading table through the running-in test assembly to evacuate the compressors; the refrigerant charging assembly selectively communicates with the compressors on the compressor loading table through the running-in test assembly to charge the compressors with refrigerant. The compressor testing device and method can reduce the operation steps in the testing process and improve the testing efficiency. Description of the Drawings

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0039] Figure 1 It is the schematic diagram of the compressor test device provided for this embodiment;

[0040] Figure 2 It is the schematic diagram of the running-in test component provided for this embodiment;

[0041] Figure 3 It is the schematic diagram of the vacuum component and the refrigerant charging component provided for this embodiment.

[0042] Icons: 100 - Compressor test device; 110 - Running-in test component; 120 - Vacuum component; 130 - Refrigerant charging component; 111 - Main test path; 112 - Sub-test path; 113 - Condenser; 114 - Expansion valve; 115 - Evaporator; 121 - Vacuum pump; 122 - Main vacuum path; 123 - Vacuum branch; 131 - Refrigerant tank; 132 - Weigher; 133 - Main refrigerant charging path; 134 - Refrigerant charging branch; 141 - Refrigerant recovery pipeline; 142 - Refrigerant recovery compressor; 143 - Oil separator; 144 - Heat exchanger. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0045] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0047] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they should not be construed as indicating or implying relative importance.

[0048] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0049] Please refer to Figures 1 - 3 , this embodiment provides a compressor testing device 100, which includes a mounting frame, a running-in testing component 110, a vacuum component 120, and a refrigerant loading component 130;

[0050] The running-in testing component 110, the vacuum component 120, and the refrigerant loading component 130 are all connected to the mounting frame, and a compressor loading platform is configured on the mounting frame. The compressor loading platform is configured with at least two mounting positions for loading the compressors to be tested;

[0051] The running-in testing component 110 is used to selectively communicate with the compressor on the compressor loading platform to perform a running-in test on the compressor;

[0052] The vacuum component 120 selectively communicates with the compressor on the compressor loading platform through the running-in testing component 110 to evacuate the compressor;

[0053] The refrigerant loading component 130 selectively communicates with the compressor on the compressor loading platform through the running-in testing component 110 to fill the compressor with refrigerant.

[0054] Please refer to Figures 1 - 3 , the working principle of this compressor testing device 100 is:

[0055] The compressor testing device 100 includes a mounting frame, a running-in testing component 110, a vacuum component 120, and a refrigerant loading component 130; among them, the running-in testing component 110, the vacuum component 120, and the refrigerant loading component 130 are all connected to the mounting frame, and a compressor loading platform is configured on the mounting frame. The compressor loading platform is configured with at least two mounting positions for loading the compressors to be tested;

[0056] The running-in test assembly 110 is used to selectively communicate with the compressor on the compressor loading platform to perform a running-in test on the compressor; the vacuum assembly 120 selectively communicates with the compressor on the compressor loading platform through the running-in test assembly 110 to evacuate the compressor; the refrigerant charging assembly 130 selectively communicates with the compressor on the compressor loading platform through the running-in test assembly 110 to charge the compressor with refrigerant.

[0057] Thus, the compressor testing device 100 integrates the running-in test assembly 110, the vacuum assembly 120, and the refrigerant charging assembly 130, and can thus achieve evacuation, refrigerant charging, and running-in testing of the compressor.

[0058] It should be noted that this embodiment is for running-in testing of vehicle electric compressors, and in other embodiments, it can also be applied to running-in testing of other types of compressors. Additionally, before performing the running-in test on it, it needs to be evacuated. The reason is that after the compressor to be tested is installed on the test station, the compressor circuit is the same as the atmospheric environment, and there cannot be air during the operation of the running-in test assembly 110. Therefore, the compressor to be tested needs to be evacuated before refrigerant is charged, that is, the air inside the compressor to be tested is pumped out, which is completed by the vacuum pump 121.

[0059] Further, please refer to Figures 1 - 3 , in this embodiment, the running-in test assembly 110 includes a main test path 111 and two sub-test paths 112;

[0060] The main test path 111 is configured with a condenser 113, an expansion valve 114, and an evaporator 115. The two sub-test paths 112 are connected in parallel to the main test path 111, and first on-off control valves are arranged at both ends of each sub-test path 112 connected to the main test path 111. The sub-test path 112 is used to communicate with the compressor to be tested; among them, one of the two sub-test paths 112 is selectively conducted with the main test path 111.

[0061] Such a setting method aims to simulate the actual working conditions of the compressor. Moreover, both of the two sub-test paths 112 can communicate with the compressor, but during actual testing, one of the two compressors is in a state of being conducted with one of the running-in test assembly 110, the vacuum assembly 120, and the refrigerant charging assembly 130. Moreover, during the testing process, the on-off state of each sub-test path 112 can be controlled by the first on-off control valves at both ends thereof. That is, when the first on-off control valves at both ends are both opened, the compressor in this sub-test path 112 is communicated with the main test path 111, and then the running-in test can be carried out.

[0062] Specifically, the running-in test component 110 adopts the refrigeration cycle of the actual operation of the compressor to conduct a running-in test on the newly produced and off-line compressor. The specific test steps are as follows:

[0063] In the refrigeration cycle, the refrigerant absorbs the heat of the object to be cooled in the evaporator 115 and vaporizes. The vaporized refrigerant vapor is sucked into and compressed by the compressor, increasing its pressure and temperature. Then, the high-temperature and high-pressure refrigerant vapor enters the condenser 113, where it releases heat to the surrounding environment (usually air or water) and condenses into a liquid. The liquid refrigerant is throttled and depressurized by the throttling device, and its temperature also decreases. Then it enters the evaporator 115 again to absorb heat and vaporize, repeating this cycle.

[0064] Moreover, the device adopts a two-station design. The operator controls different functions through different switches of the running-in table controller to achieve the compressor test on one station and the preparation of the compressor on the other station (the operator replaces the tested compressor), and conducts continuous running-in tests on the newly off-line compressors, meeting the requirements of the production line assembly line operation, thus improving the test efficiency.

[0065] Moreover, in order to detect the pressure in the main test passage 111, a first high-pressure sensor is configured in the main test passage 111. In order to detect the pressure and temperature data in the sub-test passage 112 during the test, each sub-test passage 112 is configured with a pressure sensor and a temperature sensor.

[0066] Moreover, in order to facilitate the observation of the pressure and temperature data during the test, the mounting rack is also configured with a monitoring table, which is located above the compressor loading table. The monitoring table is configured with a low-pressure pressure gauge group and a high-pressure pressure gauge group. The low-pressure pressure gauge group includes two low-pressure pressure gauges, and the two low-pressure pressure gauges are respectively connected to the intake ends of the two sub-test passages 112. The high-pressure pressure gauge group includes two high-pressure pressure gauges, and the two high-pressure pressure gauges are respectively connected to the exhaust ends of the two sub-test passages 112. In this way, it is convenient for the operator to observe the pressure changes at the intake and exhaust ends of the sub-test passage 112 to ensure safe operation. It should also be noted that the low-pressure pressure sensor at the intake end of the above-mentioned sub-test passage 112 and the high-pressure pressure sensor at its exhaust end are both connected to the controller, which is used for the controller to collect the pressure data signal, so as to facilitate the background to detect its pressure and further control the test process.

[0067] In addition, temperature sensors can also be set in each sub-test passage 112, and a thermometer group is set on the monitoring table and electrically connected to all the temperature sensors.

[0068] It should be noted that when configuring the thermometer group and the pressure gauge group, according to the usage requirements, each pressure data can be transmitted to a pressure gauge for display, and the temperature data of each temperature sensor can be transmitted to a temperature display meter for display. That is, the pressure gauge group includes multiple pressure display meters, and each pressure display meter corresponds to a detection position. Similarly, the thermometer group includes multiple temperature display meters, and each temperature display meter corresponds to a detection position. It is also possible to transmit the pressure data of multiple detection positions to a pressure display meter for display, and transmit the temperature data of multiple detection positions to a temperature display meter for display. That is, at this time, the pressure gauge group is a pressure display meter, and this pressure display meter can display multiple groups of pressure data, while the thermometer group is a temperature display meter, and this temperature display meter can display multiple groups of temperature data. It should be noted that the controller is integrated into the control system of the compressor test device 100. Therefore, it can be known that the controller is electrically connected to the first high-pressure sensor, the pressure sensor, the temperature sensor, and the second high-pressure sensor, and thus can collect the pressure and temperature data of the compressor test device 100 in real time.

[0069] When configuring the vacuum assembly 120, the vacuum assembly 120 may include a vacuum pump 121, a vacuum main path 122, and two vacuum branch paths 123. One end of the vacuum main path 122 is connected to the vacuum pump 121, and the other end is connected to the two vacuum branch paths 123. And the two vacuum branch paths 123 are respectively connected to the two sub-test paths 112. The vacuum main path 122 is configured with a second on-off control valve, and the two vacuum branch paths 123 are both provided with third on-off control valves.

[0070] Thus, through the above structural setting method, the vacuum assembly 120 adopts the method of evacuating the compressor and its conduction pipeline by the vacuum pump 121. Moreover, the structure of the vacuum pump 121 group adopts the method of configuring a vacuum main path 122 and two vacuum branch paths 123, and the two vacuum branch paths 123 are respectively connected to the two sub-test paths 112. Furthermore, through the on-off control of the vacuum main path 122, the two vacuum branch paths 123, and the two sub-test paths 112, the vacuum assembly 120 can be connected to the corresponding compressor through the sub-test path 112. That is, when the compressor is assembled to the installation position and connected to the running-in test assembly 110, during evacuation, it is not necessary to disconnect the compressor from the running-in test assembly 110 and then connect the vacuum assembly 120 to it. That is, through the on-off control of the pipeline, the connection between the vacuum assembly 120 and the compressor can be realized. Such a method can simplify the connection steps in the compressor test process, and thus can realize running-in test and evacuation with a single assembly.

[0071] In addition, a second on-off control valve is arranged on the main vacuum path 122, which can control its on-off. Moreover, by controlling the opening and closing of the third on-off control valves on the two vacuum branches 123, it is possible to selectively connect one of them to the sub-test path 112, and then it is possible to alternately evacuate the compressors at the two installation positions.

[0072] When configuring the refrigerant charging assembly 130, the refrigerant charging assembly 130 includes a refrigerant tank 131, a weighing device 132, a main refrigerant charging path 133, and two refrigerant charging branches 134;

[0073] The weighing device 132 is arranged on the mounting bracket and is used to measure the weight of the refrigerant tank 131; one end of the main refrigerant charging path 133 is communicated with the refrigerant tank 131, the other end of the main refrigerant charging path 133 is communicated with the two refrigerant charging branches 134, and the two refrigerant charging branches 134 are respectively communicated with the two sub-test paths 112;

[0074] The main refrigerant charging path 133 is provided with a fourth on-off control valve, and the two refrigerant charging branches 134 are both provided with a fifth on-off control valve.

[0075] Through the above structural setting method, during use, the refrigerant in the refrigerant tank 131 can be filled into the compressor through the main refrigerant charging path 133. Moreover, since the compressor has been evacuated by the vacuum assembly 120 before refrigerant filling, the pressure in the compressor and its connected pipelines is lower than the pressure in the refrigerant tank 131. Therefore, the refrigerant in the refrigerant tank 131 can flow from the refrigerant tank 131 to the compressor flow path under the action of the pressure difference. Moreover, during the filling process, the weight change of the refrigerant tank 131 can be measured by the weighing device 132, so as to count the weight of the filled refrigerant.

[0076] In addition, a fourth on-off control valve is arranged on the main refrigerant charging path 133, which can control its on-off. Moreover, by controlling the opening and closing of the fifth on-off control valves on the two refrigerant charging branches 134, it is possible to selectively connect one of them to the sub-test path 112, and then it is possible to alternately fill the compressors at the two installation positions with refrigerant.

[0077] Further, please refer to Figures 1 - 3, in this embodiment, after the compressor to be tested is tested, when replacing the new test compressor, the refrigerant needs to be discharged or recovered. To reduce refrigerant waste and lower the production cost of the compressor, it is necessary to recover the refrigerant. Moreover, the refrigerant R134a has a greenhouse effect, and it is necessary to reduce its emission into the environment. Therefore, to reduce the emission of refrigerant into the environment during the test process and to facilitate the recovery and reuse of the refrigerant, the compressor test device 100 further includes a refrigerant recovery pipeline 141, a refrigerant recovery compressor 142, an oil separator 143, and a heat exchanger 144. The two ends of the refrigerant recovery pipeline 141 are respectively connected to the main refrigerant loading path 133 and the refrigerant tank 131. The refrigerant recovery pipeline 141 is provided with a sixth on-off control valve. The refrigerant recovery compressor 142, the oil separator 143, and the heat exchanger 144 are all arranged on the refrigerant recovery pipeline 141. Among them, the refrigerant recovery pipeline 141 is used to communicate with the compressor selectively to recover the refrigerant in the compressor and the pipelines connected thereto.

[0078] The low-pressure gas in the compressor after the test is sucked out by the refrigerant recovery compressor 142, compressed into a high-temperature and high-pressure gas and discharged, and the temperature of the discharged refrigerant gas is reduced by the heat exchanger 144. Finally, the high-pressure and low-temperature refrigerant enters the refrigerant tank 131 for storage. The oil separator 143 is used to separate the lubricating oil contained in the refrigerant gas discharged from the recovery compressor and transport it back to the refrigerant recovery compressor 142 to avoid loss of lubricating oil.

[0079] Through the above structural setting method, after the compressor completes the running-in test, before removing it from the sub-test path 112, by conducting it with the corresponding refrigerant loading branch 134, and then when the main refrigerant loading path 133 is connected to the refrigerant recovery pipeline 141, the refrigerant can be recovered by the refrigerant recovery compressor 142. After the refrigerant is recovered, it is separated by the oil separator 143, cooled by the heat exchanger 144, and then sent back to the refrigerant tank 131 for reuse.

[0080] Moreover, during the process of refrigerant recovery, the on-off control of the fourth on-off control valve on the main refrigerant loading path 133 and the sixth on-off control valve on the refrigerant recovery pipeline 141 can be used to prevent the refrigerant in the refrigerant tank 131 from being transported to the compressor.

[0081] Moreover, to detect the pressure state of the main refrigerant loading path 133, the main refrigerant loading path 133 is configured with a second high-pressure sensor.

[0082] Based on the above structure, for the convenience of installing the above-mentioned running-in test component 110, vacuum component 120, and refrigerant loading component 130, the mounting rack is configured with a placement table. The placement table is located below the compressor loading table, and the running-in test component 110, vacuum component 120, and refrigerant loading component 130 are all installed on the placement table. Thus, through the above structural setting method, the placement table, compressor loading table, and monitoring table are arranged in sequence from bottom to top, facilitating the maintenance of the equipment, the disassembly and assembly of the compressor, and the observation of test data.

[0083] Based on the above content, it can be known that the compressor testing device 100 includes a running-in test component 110, a vacuum component 120, and a refrigerant loading component 130. Moreover, after the compressor is correspondingly connected to the installation position and connected to the sub-test path 112, the on-off state of the compressor with the running-in test component 110, vacuum component 120, and refrigerant loading component 130 can be adjusted through the combined on-off control of each on-off valve in the device, so as to implement vacuum pumping, refrigerant filling, and running-in testing of the compressor; and in this way, when there are two installation positions configured to install two compressors simultaneously, the two compressors can perform different actions in the same time period, and further the two compressors can perform vacuum pumping, refrigerant filling, and running-in testing in an alternating manner. Thus, the testing efficiency can be improved, the adjustment of the connection state of the compressor during the testing process can be reduced, and the labor intensity of the staff can be lowered.

[0084] Based on the above content, please refer to Figures 1 - 3 , this embodiment further provides a compressor testing method, which is implemented by using the above-mentioned compressor testing device 100 and includes:

[0085] Place a compressor to be tested in the installation position for loading the compressor to be tested;

[0086] Connect the compressor to be tested to the vacuum component 120 to pump vacuum for the compressor;

[0087] After the vacuum test is completed, connect the compressor that has completed the vacuum test to the refrigerant loading component 130 to fill the compressor with refrigerant;

[0088] Connect the compressor filled with refrigerant to the running-in test component 110, and perform running-in testing on the compressor through the running-in test component 110;

[0089] While implementing the foregoing steps, load another compressor to be tested into another installation position for loading the compressor to be tested, and after the running-in test of the compressor is completed, remove the compressor that has completed the running-in test or remove it after extracting the refrigerant inside, and perform vacuum pumping, refrigerant filling, and running-in testing on the newly loaded compressor to be tested according to the above steps;

[0090] Repeat the above steps.

[0091] Through the above content, the compressor test method can be implemented based on the compressor test device 100, and then the compressor can be alternately tested, thereby improving the test efficiency and simplifying the test steps. In this embodiment, the method of extracting the refrigerant inside the compressor after the running-in test is completed and then removing it is adopted. Therefore, the refrigerant released into the environment can also be reduced, thereby improving the utilization rate of the refrigerant and reducing the test cost.

[0092] It should be noted that, please refer to Figures 1 - 3 , in the above structural device, a first on-off control valve, a second on-off control valve, a third on-off control valve, a fourth on-off control valve and a fifth on-off control valve are configured. Furthermore, by connecting the first on-off control valve, the second on-off control valve, the third on-off control valve, the fourth on-off control valve and the fifth on-off control valve to the control system, the on-off control of each passage or pipeline can be realized, thereby realizing the control of the conduction state, so as to facilitate the switching of the conduction pipeline state; moreover, on this basis, the control system can also be electrically connected to structures such as the condenser 113, the expansion valve 114, the evaporator 115, the vacuum pump 121, the weighing device 132 and the refrigerant recovery compressor 142. At the same time, the control system can be connected to the first high-pressure sensor, the pressure sensor, the temperature sensor and the second high-pressure sensor. Furthermore, the communication and control of the valve body, electrical components and detection structure of the device can be realized through the control system. Thus, the automatic operation of the test can be realized, and the test efficiency can be improved. Among them, the control system can run automatically with a built-in program or execute the commands manually input by the staff to perform relevant control operations;

[0093] In addition, on the basis of the above configured structure, manual valves are also configured on each pipeline structure. The purpose is to prevent system leakage during the disassembly and assembly of the compressor and after the equipment stops, and to facilitate fault repair operations, etc.; specifically, as Figures 1 - 3 shown by the marks a, b, c, d, e, f and g in, manual valves a, manual valves b, manual valves c and manual valves d are respectively arranged at both ends of the two sub-test passages 112 and the compressor, a manual valve e is arranged on the main refrigerant loading path 133, a manual valve f is arranged at the outlet of the refrigerant tank 131, and a manual valve g is arranged on the main vacuum path 122;

[0094] In addition, to facilitate the description of the positions of the above four first on-off control valves, one second on-off control valve, two third on-off control valves, one fourth on-off control valve, two fifth on-off control valves and one sixth on-off control valve, therefore, as Figures 1 - 3 shown by the marks ①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧, ⑨, ⑩ and As shown, the above-mentioned 11 on-off control valves are respectively named electric valve ①, electric valve ②, electric valve ③, electric valve ④, electric valve ⑤, electric valve ⑥, electric valve ⑦, electric valve ⑧, electric valve ⑨, electric valve ⑩ and electric valve

[0095] Specifically, the two first on-off control valves arranged at both ends of one of the sub-test passages 112 are respectively electric valve ① and electric valve ③, and they correspond to the compressor for testing at the first position; and the two first on-off control valves arranged at both ends of the other sub-test passage 112 corresponding to the compressor for testing at the second position are respectively electric valve ⑤ and electric valve ⑦; the second on-off control valve on the vacuum main path 122 is electric valve ⑨; electric valves ④ and ⑧ are respectively arranged on the two vacuum branches 123; the fourth on-off control valve on the refrigerant loading main path 133 is electric valve ⑩; the third on-off control valves on the two refrigerant loading branches 134 are respectively electric valve ② and electric valve ⑥; the sixth on-off control valve of the refrigerant recovery pipeline 141 is electric valve

[0096] In addition, a high-pressure pressure sensor and a low-pressure pressure sensor are respectively arranged in the two sub-test passages 112. Specifically, as Figures 1 - 3 shown by the marks 1, 2, 3 and 4 in, for the convenience of explanation, a high-pressure pressure sensor 1 and a low-pressure pressure sensor 2 are arranged in one of the sub-test passages 112, and a high-pressure pressure sensor 3 and a low-pressure pressure sensor 4 are arranged in the other sub-test passage 112; and a high-pressure pressure sensor 5 is arranged in the refrigerant recovery compressor 142;

[0097] Based on the above compressor testing device 100 and compressor testing method, the steps of testing the compressor through the control system are as follows:

[0098] When the equipment is powered on, the control system detects whether each electrical component is normal, that is, all electric valves are closed, whether the pressure is normal, the first high-pressure sensor P1 can judge whether there is pressure leakage during the shutdown of the device, and the weighing device 132 can judge whether the refrigerant mass in the refrigerant tank 131 is sufficient;

[0099] When the equipment is normal, the condensing fan and the evaporating fan are turned on, and the tester turns on the manual valves a, b, c, d, e, f and g to install the compressor for testing at the first position;

[0100] Preparation for the compressor for testing at the first position (automatically controlled by the controller to complete the preparation): Electric valves ②, ④ and ⑨ are opened, other electric valves are closed, and then the vacuum pump 121 is turned on to evacuate the compressor for testing at the first position;

[0101] The high-pressure pressure sensor 1 and the low-pressure pressure sensor 2 are used to detect whether the vacuum pumping meets the requirements. When the vacuum pumping time (such as 30 s) and pressure meet the requirements, the electric valve ⑨ is closed and then the vacuum pump 121 is closed for pressure holding. After the pressure holding for a set time (such as 30 s), if the data measured by the high-pressure pressure sensor 1 and the low-pressure pressure sensor 2 meet the requirements, the vacuum pumping is completed.

[0102] For refrigerant filling, the electric valve ⑩ is opened and the refrigerant starts to be filled. After filling a specified amount (such as 50 g), the filling amount is controlled by detecting the reading of the electronic scale (weighing device 132). After filling is completed, the electric valves ②, ④, and ⑩ are closed.

[0103] The compressor at the first position is tested (the test process is automatically controlled by the controller): the electric valves ① and ③ are opened, and the other electric valves are closed. The compressor at the first position starts and runs in for 1 min (which can be set as required). During this process, relevant data such as pressure / temperature (high-pressure pressure sensor 1, low-pressure pressure sensor 2), voltage, and current related to the test compression are collected and recorded. The controller determines whether the tested compressor is qualified based on the collected information and counts the qualified and unqualified products. After the test is completed, the compressor at the first position stops, and the electric valves ① and ③ are closed.

[0104] During the preparation and test of the compressor at the first position, the tester can replace and install the compressor at the second position (the compressor at the second position must have completed refrigerant recovery).

[0105] Recovery of the compressor at the first position (the recovery process is automatically controlled by the controller). The electric valves ②, ④, and are opened, and the recovery compressor starts to recover the refrigerant from the compressor at the first position. The controller detects the high-pressure pressure sensor 1, low-pressure pressure sensor 2, high-pressure pressure sensor 3, and the reading of the electronic scale to judge the recovery situation. The second high-pressure sensor P2 is used to judge whether the pressure of the refrigerant tank 131 is too high to ensure the safety of recovery. When all the detected data meet the requirements, the electric valves ②, ④, and are closed, the recovery compressor stops, and the recovery is completed.

[0106] No. 2 position test compressor preparation: (The controller automatically controls the completion of the preparation): Electric valves ⑥, ⑧, and ⑨ are opened, and other valves are closed. Then, vacuum pump 121 is turned on to evacuate the No. 2 position test compressor. The controller checks whether the evacuation meets the requirements through sensors 3 and 4. When the evacuation time (such as 30 s) and pressure meet the requirements, electric valve ⑨ is closed, and then vacuum pump 121 is turned off for pressure holding. The pressure holding time is set (such as 30 s). After the pressure holding is completed, when the data measured by high-pressure pressure sensor 3 and low-pressure pressure sensor 4 meet the requirements, the evacuation is completed, and filling starts. Electric valve ⑩ is opened, and refrigerant starts to be filled. The specified filling amount (such as 50 g) is filled. The controller controls the filling amount by detecting the reading of the electronic scale. After the filling is completed, electric valves ⑥, ⑧, and ⑩ are closed;

[0107] No. 2 position test compressor test (The controller automatically controls the test process): Electric valves ⑤ and ⑦ are opened, and the other electric valves are closed. The No. 2 position test compressor is started for running-in test. The test time is 1 min (which can be set as required), and relevant data of the test compression such as pressure / temperature (high-pressure pressure sensor 3, low-pressure pressure sensor 4), voltage, and current are collected and recorded. The controller judges whether the test compressor is qualified according to the collected information and counts the qualified and unqualified products; after the test is completed, the No. 1 position test compressor stops, and electric valves ⑤ and ⑦ are closed;

[0108] During the preparation and test process of the No. 2 position test compressor, the tester can replace and install the No. 1 position test compressor (the refrigerant recovery must be completed);

[0109] No. 2 position test compressor recovery (The controller automatically controls the completion of the recovery process), electric valves ⑥, ⑧, and are opened, the recovery compressor is started, and the refrigerant of the No. 2 position test compressor is recovered. The controller detects high-pressure pressure sensor 3, low-pressure pressure sensor 4, high-pressure pressure sensor 5, and the reading of the electronic scale to judge the recovery situation; the pressure of refrigerant tank 131 is judged by the second high-pressure sensor P2 to ensure the safety of the recovery; when all the detected data meet the requirements, electric valves ⑥, ⑧, and are closed, the recovery compressor stops, and the recovery is completed;

[0110] During the running-in test process, if any abnormality occurs, the alarm device is triggered, the equipment automatically stops the test, the operator reports the problem, and the professional personnel check and repair the test device.

[0111] Please refer to Figures 1 - 3 , the compressor test device 100 and the compressor test method provided in this embodiment have the following advantages:

[0112] The device adopts an integrated design of testing, recovery, vacuum pumping, and refrigerant filling, which improves the integration of the equipment and reduces the volume of the equipment.

[0113] The processes of testing, recovery, and vacuum pumping are automatically controlled by the device, eliminating the need for testers to manually perform operations such as vacuum pumping, filling, testing, and recovery. This reduces the need for testers to subjectively judge the conditions of vacuum pumping, filling, testing, and recovery, greatly reducing the risk of human operation errors, lowering the work intensity and professional skill requirements of operators, and improving testing efficiency and reliability.

[0114] The integrated design of refrigerant filling and recovery reduces refrigerant consumption, improves economy, and is environmentally friendly (e.g., reducing the greenhouse effect of R134a and emissions into the environment).

[0115] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A compressor testing device, characterized in that: The compressor testing device comprises a mounting frame, a running-in test assembly, a vacuum assembly and a refrigerant loading assembly; The running-in test assembly, the vacuum assembly and the refrigerant loading assembly are all connected to the mounting frame, and the mounting frame is provided with a compressor loading platform, and the compressor loading platform is provided with at least two mounting positions for loading the compressor to be tested; The running-in test assembly is used to selectively communicate with the compressor on the compressor loading platform to perform a running-in test on the compressor; The vacuum component is selectively connected to the compressor on the compressor loading platform through the running-in test component to evacuate the compressor; The refrigerant loading component is selectively connected to the compressor on the compressor loading platform through the running-in test component to fill the compressor with refrigerant.

2. The compressor testing device according to claim 1, characterized in that: The running-in test assembly includes a main test path and two sub-test paths; The main test passage is equipped with a condenser, an expansion valve and an evaporator; The two sub-test passages are connected in parallel to the main test passage, and both ends of each sub-test passage connected to the main test passage are provided with a first on-off control valve; the sub-test passage is used to communicate with the compressor to be tested, Wherein, one of the two sub-test paths is connected to the main test path.

3. The compressor testing device according to claim 2, characterized in that: The main test path is configured with a first high pressure sensor.

4. The compressor testing device according to claim 2, characterized in that: Each of the sub-test passages is provided with a low-pressure pressure sensor at its inlet end and a high-pressure pressure sensor at its exhaust end; The mounting frame is also equipped with a monitoring platform, which is located above the compressor loading platform. The monitoring platform is equipped with a low-pressure pressure gauge group connected to the intake end of the sub-test passage and a high-pressure pressure gauge group connected to the exhaust end of the sub-test passage.

5. The compressor testing device according to claim 2, characterized in that: The vacuum assembly includes a vacuum pump, a vacuum main circuit and two vacuum branches; One end of the vacuum main path is connected to the vacuum pump, and the other end thereof is connected to the two vacuum branches, and the two vacuum branches are respectively connected to the two sub-test paths; The vacuum main circuit is provided with a second on-off control valve, and the two vacuum branches are both provided with a third on-off control valve.

6. The compressor testing device according to claim 2, characterized in that: The refrigerant loading assembly includes a refrigerant tank, a weighing device, a refrigerant loading main circuit and two refrigerant loading branches; The weighing device is arranged on the mounting frame and is used to measure the weight of the refrigerant tank; One end of the refrigerant loading main circuit is connected to the refrigerant tank, and the other end of the refrigerant loading main circuit is connected to the two refrigerant loading branches, and the two refrigerant loading branches are respectively connected to the two sub-test passages; The refrigerant loading main circuit is configured with a fourth on-off control valve, and the two refrigerant loading branch circuits are both configured with a fifth on-off control valve.

7. The compressor testing device according to claim 6, characterized in that: The compressor testing device also includes a refrigerant recovery pipeline, a refrigerant recovery compressor, an oil separator and a heat exchanger; The two ends of the refrigerant recovery pipeline are respectively connected to the refrigerant loading main circuit and the refrigerant tank, and the refrigerant recovery compressor, the oil separator and the heat exchanger are all arranged on the refrigerant recovery pipeline; the refrigerant recovery pipeline is provided with a sixth on-off control valve; The refrigerant recovery pipeline is used to selectively communicate with one of the compressors to recover the refrigerant in the compressor and the pipeline communicating therewith.

8. The compressor testing device according to claim 7, characterized in that: The refrigerant loading main path is configured with a second high-pressure sensor.

9. The compressor testing device according to claim 1, characterized in that: The mounting frame is provided with a placing platform, which is located below the compressor loading platform, and the running-in test assembly, the vacuum assembly and the refrigerant loading assembly are all installed on the placing platform.

10. A compressor testing method, implemented by using the compressor testing device according to any one of claims 1 to 9, characterized in that: include: Placing a compressor to be tested in a mounting position for loading the compressor to be tested; Connecting the compressor to be tested with the vacuum component to evacuate the compressor; After the vacuum test is completed, the compressor that has completed the vacuum test is connected to the refrigerant loading component to add refrigerant to the compressor; Connecting the compressor filled with refrigerant to the running-in test assembly, and performing a running-in test on the compressor through the running-in test assembly; While implementing the above steps, another compressor to be tested is installed in another installation position for loading the compressor to be tested, and after the compressor running-in test is completed, the compressor that has completed the running-in test is removed or the refrigerant inside it is extracted and then removed, and the newly installed compressor to be tested is vacuumed, filled with refrigerant, and subjected to a running-in test according to the above steps; Repeat the above steps.

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