CN115126689A - Performance testing device for refrigeration compressor and using method - Google Patents
Performance testing device for refrigeration compressor and using method Download PDFInfo
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Abstract
The invention provides a performance testing device of a refrigeration compressor and a using method thereof. The above-mentioned refrigeration cycle system includes: refrigeration system components such as an evaporator, a condenser, an expansion valve, etc.; the test control system includes: the system comprises a data acquisition and transmission module, an NF power supply, a pressure sensor, a temperature sensor, control switches of all parts and other test and measurement instruments. Wherein, a refrigeration cycle system composed of refrigeration elements such as an evaporator, a condenser, an expansion valve and the like, a test control system and each auxiliary device are respectively arranged on each position of a test bench of the test device. The invention effectively combines the refrigeration cycle system and the test control system, collects, records, analyzes and calculates the experimental data of the performance test of the compressor and outputs the result, thereby realizing the performance test and the performance analysis of different compressors under various working conditions.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to a performance testing device of a refrigeration compressor under variable working conditions and a using method.
Background
The compressor is a core component of refrigeration equipment such as a refrigerator and an air conditioner, the performance of the compressor determines the excellence of the common refrigeration equipment, and the performance and the power consumption of the compressor are important concerns. In order to detect the working performance of the compressor, a testing device is constructed to detect the performance of the compressor. With the development of the compressor industry, the conventional performance test method cannot meet the test requirement, and the research and development progress of the product is influenced.
Different from the prior testing method, the testing device adopts a compressor performance testing system taking a PC (personal computer) as a core, reduces the influence of human factors and is more reliable in performance testing and analysis of the compressor. The testing device has the characteristics of a data acquisition module, voltage and frequency regulation and the like, the working requirements of different compressors under different working conditions are met, and the intellectualization and the convenience of the performance test of the compressors are achieved.
Disclosure of Invention
In order to solve the problems which are easy to occur in the conventional testing method, the invention aims to provide a refrigerating compressor performance testing device and a using method thereof so as to solve the problems in the background.
In order to realize the functions, the invention provides a performance testing device of a refrigeration compressor and a using method thereof.
The refrigeration cycle system includes: the system comprises a tested compressor, a condenser, an evaporator, an expansion valve, a liquid viewing mirror, a filter, a liquid storage tank, a refrigerant pipeline, a water pipe pipeline, a stop valve, a constant-temperature water tank and a testing device platform. The test device platform is made of a stainless steel plate; the tested compressor is placed above the testing device platform; the constant-temperature water tank is placed on the ground at the rear side of the testing device platform; the tested compressor is provided with an air inlet and an air outlet, wherein the air outlet is connected with the condenser by a copper pipe, and the air inlet is connected with the evaporator by a copper pipe; the stop valve is arranged between the inlet of the condenser refrigerant pipeline and the exhaust port of the compressor and is used for adjusting the flow of the refrigerant and controlling the opening and closing state of the circulating loop of the refrigeration system; the condenser cools the high-temperature and high-pressure refrigerant gas passing through the copper pipe, so that the refrigerant becomes low-temperature and high-pressure refrigerant liquid, and the condenser is divided into a refrigerant inlet and a refrigerant outlet and a circulating water inlet and a circulating water outlet; the refrigerant outlet of the condenser is connected to the inlet end of the liquid observation mirror through a copper pipe; the liquid viewing mirror is arranged between the condenser and the mass flowmeter and is used for observing the state of the refrigerant in the copper pipe after passing through the condenser; the outlet end of the mass flowmeter is connected to the inlet end of the filter through a copper pipe; the filter filters the refrigerant in the refrigerant pipeline to prevent impurities in the refrigerant from entering the compressor to be tested; the inlet end of the liquid storage tank is connected with the outlet end of the filter and is used for storing excessive refrigerant liquid in the refrigerant pipeline and preventing the refrigerant liquid from entering the compressor to generate liquid impact on the compressor and damage the compressor; the outlet end of the liquid storage tank is connected with an expansion valve through a copper pipe, and low-temperature and high-pressure refrigerant liquid becomes low-temperature and low-pressure refrigerant gas after passing through the expansion valve; the outlet end of the expansion valve is connected with the inlet end of the evaporator through a copper pipe; the evaporator heats the low-temperature and low-pressure refrigerant gas passing through the copper pipe to enable the refrigerant to become high-temperature and low-pressure refrigerant gas, and is divided into a refrigerant inlet and a refrigerant outlet and a circulating water inlet and a circulating water outlet; the evaporator refrigerant outlet is connected to the inlet end of the liquid observation mirror through a copper pipe; the stop valve is arranged between the evaporator and the compressor and used for adjusting the flow of the refrigerant and controlling the opening and closing state of the circulating loop of the refrigeration system; the outlet end of the stop valve is connected with an air inlet of the compressor; the water inlet of the condenser is connected with the water outlet of the constant-temperature water tank (cold) through a PVC pipe, and the water outlet of the condenser is connected with the water inlet of the constant-temperature water tank (cold) through a PVC pipe; the water inlet of the evaporator is connected with the water outlet of the constant-temperature water tank (hot) through a PVC pipe, and the water outlet of the evaporator is connected with the water inlet of the constant-temperature water tank (hot) through the PVC pipe; the constant temperature water tank has heating and refrigerating functions for ensuring the circulating water temperature requirements of the evaporator and the condenser, ensures the constant temperature of the circulating water flowing into the refrigerating system, and completes heat transfer.
The test control system includes: PC, NF power, DC power, data acquisition module. Hardware parts such as an RS485 bus, an RS232 bus, a temperature sensor, a pressure sensor, a mass flowmeter and the like, and performance testing software developed by Matlab. The NF power supply supplies voltage to the tested compressor and is connected with the PC through an RS232 bus; the mass flowmeter is connected with a PC (personal computer) through an RS485 bus; the temperature sensor is a patch type platinum resistor and is attached to the refrigerant pipeline; the pressure sensor plug-in type sensor is inserted into the refrigerant pipeline through bolt connection; the acquisition device acquires signals of the temperature sensor and the pressure sensor, stores the signals in an acquisition card and transmits the signals to the PC; the PC machine acquires a mass flowmeter signal through an RS485 bus and converts the signal into a mass flowmeter parameter; the PC is provided with a refrigerating compressor performance testing software, and according to an internally programmed formula and algorithm, parameters such as temperature, pressure flow and the like are converted into data to be assigned to the internal algorithm, and various parameters of the tested compressor are obtained and then output; the performance test software of the refrigeration compressor comprises functional modules such as acquisition card setting, NF power setting, mass flow meter setting, system setting, data management, interface display and the like; the pipeline, the evaporator and the condenser of the testing device are insulated by being wrapped by insulation cotton.
The auxiliary system selects other compressors as a refrigeration cycle system for vacuumizing, an air inlet of the vacuumizing compressor is connected with an air outlet of a tested compressor through a copper pipe, the vacuumizing compressor is started to exhaust air in the refrigeration system, the interior of a pipeline of the refrigeration system is in a vacuum state, after the pipeline of the refrigeration system is in the vacuum state, the vacuumizing compressor is closed and the two compressors are disconnected, whether the pipeline of the refrigeration system leaks air or not is checked, and whether the pipeline of a refrigerant leaks air or not is judged by observing the numerical value change of the digital display pressure sensor.
The invention has the beneficial effects that: the test control system provided by the invention can realize the control and data acquisition functions only by using a PC (personal computer), realize the functions of real-time monitoring, data acquisition, data drawing graph and the like, has simple software operation, can provide different working conditions and improves the working efficiency; the refrigeration cycle system provided by the invention has the characteristics of simple and reliable structure, convenience in disassembly, good tightness and the like, and can be used for carrying out performance tests on different compressors.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a functional diagram of the test control system of the present invention.
Fig. 3 is a working schematic diagram of the acquisition module of the present invention.
FIG. 4 is a software flow diagram of the present invention.
Fig. 5 is a working principle diagram of the present invention.
Description of reference numerals: 1. a PC machine; 2. a data acquisition card; 3. a measured compressor; 4/13, a stop valve; 5. a condenser; 6/12, liquid sight glass; 7. a mass flow meter; 8. a filter; 9. a liquid storage tank; 10. an expansion valve; 11. an evaporator; 14. a circulating water line; 15. a refrigerant line; 16. a direct current power supply; 17. an NF power supply; 18. a test device platform; 19. constant temperature water tank (cold); 20. constant temperature water tank (hot).
Detailed Description
The technical solution in the embodiments of the present invention will be fully described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that the directional principle (for example, left side, right side, lower side, etc.) mentioned in the embodiments of the present invention is only used to explain the relative position relationship between the components in a certain specific posture, and when the specific posture is changed, the directional principle is also changed.
The performance testing device of the refrigeration compressor is described in detail with reference to fig. 1, and is mainly applied to performance testing of compressors in refrigeration equipment such as refrigerators, air conditioners and the like.
The performance testing device of the refrigeration compressor comprises a testing control system taking a PC (personal computer) 1 as a core, and a data acquisition card 2, an NF (NF) power supply 17, a pressure sensor, a temperature sensor, control switches of all parts and other testing and measuring instruments are matched; the refrigeration cycle system having the load-receiving compressor 3 as a core is provided with refrigeration system elements such as an evaporator 11, a condenser 5, and an expansion valve 10. Wherein, a refrigeration cycle system, a measurement and control system and auxiliary equipment which are composed of refrigeration elements such as an evaporator 11, a condenser 5, an expansion valve 10 and the like are respectively arranged on each position of a structural frame platform of the testing device. The invention realizes the convenience and intellectualization of the performance test of the compressor by effectively combining the refrigeration cycle system and the test control system.
The refrigeration cycle system includes: the device comprises a tested compressor 3, a condenser 5, an evaporator 11, an expansion valve 10, a liquid viewing mirror 6/12, a filter 8, a liquid storage tank 9, a refrigerant pipeline 15, a circulating water pipeline 14, a stop valve 4/13, a constant temperature water tank 19/20 and a testing device platform 18. The test device platform 18 is made of stainless steel plate; the tested compressor 3 is placed above the testing device platform 18; the constant-temperature water tank 19/20 is placed on the ground at the rear side of the testing device platform 18; the tested compressor 3 is provided with an air inlet and an air outlet, wherein the air outlet is connected with the condenser 5 by a copper pipe, and the air inlet is connected with the evaporator 11 by a copper pipe; the stop valve 4 is arranged between the inlet of a refrigerant pipeline of the condenser 5 and the exhaust port of the tested compressor 3 and is used for adjusting the flow of the refrigerant and controlling the opening and closing state of a circulating loop of the refrigeration system; the condenser 5 cools the high-temperature and high-pressure refrigerant gas passing through the copper pipe, so that the refrigerant becomes low-temperature and high-pressure refrigerant liquid, and the condenser 5 is divided into a refrigerant inlet and a refrigerant outlet and a circulating water inlet and a circulating water outlet; the refrigerant outlet of the condenser 5 is connected to the inlet end of the liquid observation mirror through a copper pipe; the liquid viewing mirror 6 is arranged between the condenser 5 and the mass flowmeter 7 and is used for observing the state of the refrigerant in the copper pipe after passing through the condenser 5; the outlet end of the mass flowmeter 7 is connected to the inlet end of the filter 8 through a copper pipe; the filter 8 filters the refrigerant in the refrigerant pipeline 15 to prevent impurities in the refrigerant from entering the compressor 3 to be tested; the inlet end of the liquid storage tank 9 is connected with the outlet end of the filter 8 and is used for storing excessive refrigerant liquid in the refrigerant pipeline 15 and preventing the refrigerant liquid from entering the compressor 3 to be tested to generate liquid impact on the compressor and damage the compressor; the outlet end of the liquid storage tank 9 is connected with an expansion valve 10 through a copper pipe, and low-temperature and high-pressure refrigerant liquid becomes low-temperature and low-pressure refrigerant gas after passing through the expansion valve 10; the outlet end of the expansion valve 10 is connected with the inlet end of the evaporator 11 through a copper pipe; the evaporator 11 heats the low-temperature and low-pressure refrigerant gas passing through the copper pipe, so that the refrigerant becomes high-temperature and low-pressure refrigerant gas, and the evaporator 11 is divided into a refrigerant inlet and a refrigerant outlet and a circulating water inlet and a circulating water outlet; the refrigerant outlet of the evaporator 11 is connected to the inlet end of the liquid observation mirror 12 through a copper pipe; the stop valve 13 is arranged between the evaporator 11 and the compressor 3 and is used for adjusting the flow of the refrigerant and controlling the opening and closing state of the circulating loop of the refrigeration system; the outlet end of the stop valve 13 is connected with the air inlet of the compressor 3; the water inlet of the condenser 5 is connected with the water outlet of the constant-temperature water tank (cold) 19 through a PVC pipe, and the water outlet of the condenser 5 is connected with the water inlet of the constant-temperature water tank (cold) 19 through a PVC pipe; the water inlet of the evaporator 11 is connected with the water outlet of the constant-temperature water tank (hot) 20 through a PVC pipe, and the water outlet of the evaporator 11 is connected with the water inlet of the constant-temperature water tank (hot) 20 through a PVC pipe; the constant temperature water tank 20 has heating and refrigerating functions for ensuring that the temperature of circulating water of the evaporator 11 and the condenser 5 meets requirements, and ensures that the temperature of the circulating water flowing into the refrigerating system is constant, thereby completing heat transfer.
The test control system includes: PC 1, NF power supply 17, DC power supply 16, data acquisition card 2. Hardware parts such as an RS485 bus, an RS232 bus, a temperature sensor, a pressure sensor, a mass flowmeter 7 and the like, and performance test software developed by Matlab. The NF power supply 17 supplies voltage to the tested compressor 3 and is connected with the PC 1 through an RS232 bus; the mass flowmeter 7 is connected with the PC 1 through an RS485 bus; the temperature sensor is a patch type platinum resistor and is attached to the refrigerant pipeline; the pressure sensor plug-in type sensor is inserted into the refrigerant pipeline through bolt connection; the acquisition device acquires signals of the temperature sensor and the pressure sensor, stores the signals in the data acquisition card 2 and transmits the signals to the PC 1; the PC 1 acquires a signal of the mass flowmeter 7 through an RS485 bus and converts the signal into a mass flowmeter parameter; the PC 1 is provided with a refrigerating compressor performance testing software, and according to an internally programmed formula and algorithm, parameters such as temperature, pressure flow and the like are converted into data to be assigned to the internal algorithm, and various parameters of the tested compressor 3 are obtained and then output; the performance test software of the refrigeration compressor comprises functional modules such as acquisition card setting, NF power setting, mass flow meter setting, system setting, data management, interface display and the like; the pipeline of the testing device, the condenser 5 and the evaporator 11 are insulated by being wrapped by insulation cotton.
The auxiliary system selects other compressors as a refrigeration cycle system for vacuumizing, an air inlet of the vacuumizing compressor is connected with an air outlet of the tested compressor 3 through a copper pipe, the vacuumizing compressor is started to exhaust air in the refrigeration system, so that the interior of the refrigerant pipeline 15 reaches a vacuum state, after the refrigerant pipeline 15 reaches the vacuum state, the vacuumizing compressor is closed and the two compressors are disconnected, whether the refrigeration system pipeline has an air leakage phenomenon is checked, and whether the air leakage phenomenon exists in the refrigerant pipeline 15 is judged by observing the numerical value change of the digital display pressure sensor.
The experimental preparation and experimental process for the performance test of the compressor based on the above-mentioned testing device will be described in detail.
And (4) preparing an experiment.
Before the tested compressor 3 is subjected to a performance test experiment, a refrigeration pipeline of the test system needs to be vacuumized. At the moment, the stop valves 4 and 13 need to be opened to ensure that the stop valves 4 and 13 are in the maximum opening state, the air inlet of the vacuumizing compressor is connected with the valve inside on a refrigeration pipeline connected with the exhaust port of the tested compressor, after the vacuumizing compressor is started, the refrigeration pipeline in the system is vacuumized to discharge air in the pipeline, when the numerical value of a pressure sensor in the testing device is close to the air pressure in vacuum, the vacuumizing compressor is stopped to work, the connection with the testing device is disconnected, and meanwhile, the numerical values of 3 pressure sensors are recorded; after 30 minutes, observing whether the numerical values of the 3 pressure sensors are the same as the previously recorded numerical values, if the numerical values are reduced, judging whether the pipelines have the conditions of leakage and the like, and if the numerical values are not changed, representing that the air tightness of the refrigeration pipelines is good, and carrying out the performance test of the compressor; the testing device is good in air tightness, after the vacuum pumping is finished, the stop valves 4 and 13 are kept in the maximum opening state, the outlet of the refrigerant tank is connected with the valve core on the refrigerating pipeline connected with the exhaust port of the tested compressor, the switch of the refrigerant tank is opened, the refrigerant in the refrigerant tank is slowly guided into the refrigerant pipeline of the testing device, when the pressure of the inlet and the outlet of the tested compressor respectively reaches the preset value, the refrigerant charging is stopped, the switch of the refrigerant tank is closed, and the connection between the refrigerant tank and the testing device is disconnected.
The testing device needs constant-temperature circulating water to provide conditions for testing, so that the constant- temperature water tanks 19 and 20 need to be opened in advance before the compressor is tested, and the internal temperatures of the constant- temperature water tanks 19 and 20 reach set values. When the constant temperature water tanks 19 and 20 are opened, the water in the water tanks is heated or cooled, and when the water in the two water tanks reaches a set value, circulation buttons of the constant temperature water tanks 19 and 20 are opened, so that the water in the constant temperature water tanks 19 and 20 provides circulating water for the condenser 5 and the evaporator 11 through the PVC pipes. The heating or cooling function in the constant temperature water tanks 19 and 20 is kept in an open state, so that the temperature of circulating water flowing in the condenser 5 and the evaporator 11 in the test process is always kept at a set temperature.
The data acquisition card 2, the mass flow meter 7 and the NF power supply 19 are connected with the PC 1 through serial ports, serial port numbers connected with parts need to be selected in test software setting on the PC 1, for example, when the data acquisition card 2 is inserted into a serial port COM1 of a case of the PC, the test software also needs to select a serial port COM1 when controlling a data acquisition module, and when the mass flow meter 7 is inserted into a COM2 serial port, the serial port COM2 is selected in the software setting, and so on. When the serial numbers of the PC terminal selection port and the insertion serial port are not consistent, the PC 1 and each part cannot be connected.
The PC 1 inputs each set parameter value of the acquisition device, transmits the set parameter value to the acquisition card 2, then judges whether the acquisition card 2 normally acquires each sensor parameter according to the set value, if normal, continues, if not, terminates the test; the PC inputs a mass flowmeter starting instruction, transmits the mass flowmeter starting instruction to the mass flowmeter 7, judges whether the PC normally obtains mass flowmeter parameters according to the popup prompt of the PC 1, continues if the PC is normal, and terminates the test if the PC is abnormal; the PC 1 inputs each set parameter value of the compressor, transmits the parameter value to the NF power supply 17, judges whether the PC 1 is correctly connected with the NF power supply 19 according to whether the parameter of the visual interface of the NF power supply 17 changes, and if the parameter is normal, the test is continued, and if the parameter is abnormal, the test is terminated.
And (4) carrying out an experimental process.
And if the starting settings are normal, the performance of the compressor to be tested can be tested.
As shown in fig. 5, when the start-up testing device is prepared to perform the performance test of the compressor, the compressor is started, the compressor sucks the high-temperature low-pressure gaseous refrigerant into the cavity of the compressor, the compressor works to compress the high-temperature low-pressure gaseous refrigerant in the cavity, the high-temperature low-pressure gaseous refrigerant is compressed into the high-temperature high-pressure gaseous refrigerant, and then the refrigerant flows out from the exhaust port of the compressor.
The high-temperature high-pressure gas flows into the condenser 5, heat transfer is completed in the condenser 5, and the refrigerant is converted into medium-temperature high-pressure liquid by the high-temperature high-pressure gas. The condenser is internally divided into two pipelines, wherein one pipeline is a refrigerant pipeline, namely refrigerant needing to be condensed flows in the circulating pipeline, and the other pipeline is a circulating water pipeline, namely low-temperature water providing conditions for the condensation of the refrigerant flows in the circulating pipeline. Two pipelines in the condenser are attached, when liquid flows in the pipelines, if the temperatures of the two liquids are different, energy transfer can occur, and the high-temperature heat source transfers heat to the low-temperature heat source. The high-temperature refrigerant transfers heat to low-temperature circulating water in the condenser through heat transfer, and the purposes of cooling and liquefying the refrigerant are achieved. The condenser 5 is connected with the constant temperature water tank (cold) 19, when the testing device operates, the water pump in the constant temperature water tank (cold) 19 continuously works, circulating water is conveyed to the outer pipeline of the condenser 5 through the water outlet to circulate, and the circulating water flows back to the constant temperature water tank (cold) 19 again after heat exchange is completed.
The liquid refrigerant passes through a mass flow meter 7, a filter 8 and a liquid storage tank 9, is throttled by an orifice of an expansion valve 10, and then is released to become a low-temperature and low-pressure gaseous refrigerant.
The low-temperature low-pressure gas flows into the evaporator 11, heat transfer is completed in the evaporator 11, and the refrigerant is converted into the medium-temperature low-pressure gas from the low-temperature low-pressure gas. The evaporator is internally divided into two pipelines, wherein one pipeline is a refrigerant pipeline, namely, the refrigerant needing to be heated flows in the circulating pipeline, the other pipeline is a circulating water pipeline, namely, high-temperature water which provides conditions for heating the refrigerant flows in the pipeline, the low-temperature refrigerant flows in the evaporator, and heat is absorbed from the circulating water pipeline in a heat transfer mode, so that the temperature of the refrigerant is increased. The evaporator 11 is connected with a constant temperature water tank (hot) 20, a water pump in the constant temperature water tank (hot) 20 continuously works to convey circulating water to an external pipeline of the evaporator 11 through a water outlet for circulation, and the circulating water flows back to the constant temperature water tank (hot) 20 again after heat exchange is completed.
The medium temperature, low pressure refrigerant then flows into the compressor 3 for the next operating cycle.
When the preset time or the preset collection times are reached, the test software in the PC 1 stops working, waits for the next instruction, can change working parameters or keep the original working conditions to continue the test, or ends the test.
After the test is finished, the connection between the tested compressor 3 and the NF power supply 17 is disconnected on the test software on the PC 1; storing the acquired data into the PC 1, and then clearing data and images in the test software; the connection between the PC 1 and the mass flow meter 7, the data acquisition card 2 and the NF power supply 17 is disconnected; and (3) closing the software, closing the PC 1 and the NF power supply 17, and finally closing the power supply to finish the test.
Although the invention has been described with reference to specific embodiments and technical contents, the invention is not limited to the disclosed embodiments, and those skilled in the art should understand that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the invention should be included in the protection scope of the invention.
Claims (4)
1. The performance testing device for the refrigeration compressor comprises a refrigeration cycle system taking a tested compressor (3) as a core, a testing control system taking a PC (1) as a core and an auxiliary device for vacuumizing, and is characterized in that: the refrigeration cycle system includes: the device comprises a tested refrigeration compressor (3), a condenser (5) connected with an exhaust port of the compressor, an evaporator (11) connected with an air inlet of the compressor, two constant-temperature water tanks (19 and 20) arranged beside a testing device frame, wherein one of the constant-temperature water tanks is connected with the condenser (5) and used for cooling circulating water in the condenser (5), the other evaporator (11) is connected and used for heating the circulating water in the evaporator (11), a liquid viewing mirror (6) is arranged at an outlet of the condenser (5) and used for observing the state of a refrigerant passing through the condenser (5), a liquid viewing mirror (12) is arranged at an outlet of the evaporator (11) and used for observing the state of the refrigerant passing through the evaporator (11), an expansion valve (10) positioned in front of an inlet of the evaporator (11), a refrigerant pipeline (15) connecting refrigeration elements and the condenser (5), A water pipe (14) connecting the evaporator (11) with the constant temperature water tanks (19, 20); the test control system includes: the system comprises a PC (1), an NF power supply (17) for supplying power to the compressor, a direct current power supply (16) for supplying power to the sensors and the mass flow meter, a data acquisition card (2), an RS-485 bus, an RS-232 bus, temperature sensors at each position, a pressure sensor and the mass flow meter (7), wherein two ends of the data acquisition card are respectively connected with the PC (1) and the sensors, and refrigerating compressor measurement and control software developed by MATLAB in the PC (1); the auxiliary device includes: and (4) vacuumizing the compressor.
2. A performance testing apparatus of a refrigerating compressor according to claim 1, wherein the refrigerating cycle system of the performance testing apparatus of a refrigerating compressor comprises: the stop valves are positioned at the air inlet end and the air outlet end of the tested compressor (3) and are used for opening or cutting off the refrigerant pipeline (14); the liquid storage tank (9) is positioned at the outlet end of the condenser (5) and the inlet end of the evaporator (11) and is used for storing redundant refrigerant in the refrigeration pipeline (14); and the filter (8) is positioned at the outlet end of the condenser (5) and the inlet end of the liquid storage tank (9) and is used for filtering impurities in the refrigeration pipeline (14).
3. A performance testing apparatus of a refrigerating compressor as recited in claim 1, wherein said performance testing control system of a refrigerating compressor comprises: one end of a data acquisition card (2) positioned on the testing device framework platform (18) is connected with each temperature sensor and each pressure sensor, and the other end is connected with the PC (1); the mass flow meter (7) is positioned between the outlet end of the condenser (5) and the inlet end of the liquid storage tank (9) and is connected with the PC (1) at the same time; the temperature sensors are patch type platinum resistors, and each temperature sensor is attached to each temperature detection point on the refrigeration pipeline (15); the pressure sensors are digital display type pressure sensors which are respectively arranged at the outlet end of the tested compressor (3), the inlet end of the evaporator (11) and the inlet end of the tested compressor (3); and an NF power supply (17) for supplying a variable power supply to the tested compressor (3).
4. A performance testing device of a refrigeration compressor according to claim 1, comprising auxiliary means for evacuating the refrigeration system, the evacuation compressor being selected to evacuate the compressor (3) under test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210952458.1A CN115126689A (en) | 2022-08-09 | 2022-08-09 | Performance testing device for refrigeration compressor and using method |
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| CN202210952458.1A CN115126689A (en) | 2022-08-09 | 2022-08-09 | Performance testing device for refrigeration compressor and using method |
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| CN202210952458.1A Pending CN115126689A (en) | 2022-08-09 | 2022-08-09 | Performance testing device for refrigeration compressor and using method |
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| JP2000111175A (en) * | 1998-10-07 | 2000-04-18 | Denso Corp | Refrigerating cycle apparatus |
| CN110792586A (en) * | 2019-10-22 | 2020-02-14 | 辽宁工程技术大学 | Intelligent compressor performance test and monitoring test bed |
| CN111677664A (en) * | 2020-06-30 | 2020-09-18 | 杭州兴鑫科技有限公司 | Performance test bench for screw compressor |
| CN113847963A (en) * | 2021-08-06 | 2021-12-28 | 合肥通用机械研究院有限公司 | Mass flow calculation method of performance testing device of refrigeration compressor |
| CN216621785U (en) * | 2021-12-17 | 2022-05-27 | 天津市公用技师学院 | Automobile air conditioner compressor refrigeration performance test experiment table |
| CN216645821U (en) * | 2021-12-17 | 2022-05-31 | 天津市公用技师学院 | Performance comparison test experiment table for different throttling devices of automobile air conditioner |
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2022
- 2022-08-09 CN CN202210952458.1A patent/CN115126689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000111175A (en) * | 1998-10-07 | 2000-04-18 | Denso Corp | Refrigerating cycle apparatus |
| CN110792586A (en) * | 2019-10-22 | 2020-02-14 | 辽宁工程技术大学 | Intelligent compressor performance test and monitoring test bed |
| CN111677664A (en) * | 2020-06-30 | 2020-09-18 | 杭州兴鑫科技有限公司 | Performance test bench for screw compressor |
| CN113847963A (en) * | 2021-08-06 | 2021-12-28 | 合肥通用机械研究院有限公司 | Mass flow calculation method of performance testing device of refrigeration compressor |
| CN216621785U (en) * | 2021-12-17 | 2022-05-27 | 天津市公用技师学院 | Automobile air conditioner compressor refrigeration performance test experiment table |
| CN216645821U (en) * | 2021-12-17 | 2022-05-31 | 天津市公用技师学院 | Performance comparison test experiment table for different throttling devices of automobile air conditioner |
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