Compressor performance testing device of multiple-evaporation-temperature system

Abstract

The invention provides a compressor performance testing device of a multiple-evaporation-temperature system. The device is used for a compressor with multiple air cylinders and multiple liquid accumulators, each liquid accumulator communicates with the corresponding air cylinder in the compressor, and an exhaust port of the compressor is connected with a condenser. The compressor performance testing device comprises a plurality of refrigerating capacity testing sets; the first end of each refrigerating capacity testing set is connected with a liquid discharge outlet of the condenser, the second end of each refrigerating capacity testing set is connected with an air inlet of one liquid accumulator of the compressor, and each refrigerating capacity testing set communicates with the corresponding air cylinder through the corresponding liquid accumulator; each refrigerating capacity testing set comprises a calorimeter, and a heater is arranged in the calorimeter; a stop valve, a pressure and flow sensor and an electronic expansion valve are arranged between an inlet of the calorimeter and the first end of each refrigerating capacity testing set; two pressure and temperature sensors are arranged between an outlet of the calorimeter and the second end of each refrigerating capacity testing set; and the refrigerating capacity of the corresponding evaporation side is obtained by computing the refrigerating capacity of the refrigerant side of each refrigerating capacity testing set. The refrigerating capacities of the two or more refrigerant sides of the multiple-evaporation-temperature refrigerating system can be simultaneously measured.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a multi-evaporating temperature system compressor performance testing device. Background technique [0002] Refrigeration performance is one of the main performance indicators of compressors. The testing devices in the prior art are relatively complicated, and the input and testing costs are relatively high. In reality, on the one hand, for compressor manufacturers, due to the processing accuracy There is a certain gap between the actual working ability and the design ability due to the limitation of the design and production of the compressor. On the other hand, the selection of the compressor by the refrigeration equipment manufacturer generally only depends on the compressor manufacturer The work performance provided is based on standard working conditions. When the refrigeration equipment works under non-standard working conditions, there will be a big difference between the actual...

AI Technical Summary

Problems solved by technology

[0002] Refrigeration performance is one of the main performance indicators of compressors. The testing devices in the prior art are relatively complicated, and the input and testing costs are relatively high. In reality, on the one hand, for compressor manufacturers, due to the processing accuracy There is a certain gap between the actual working ability and the design ability due to the limitation of the design and production of the compressor. On the other hand, the selection of the compressor by the refrigeration equipment manufacturer generally only depends on the compressor manufacturer The work performance provided is based on standard working conditions. When the refrigeration equipment works under non-standard working conditions, there will be a big difference between the actual working performance and the expected performance of the compressor. Ability to retest and calibrate

[0003] However, the current compressor performance test bench can only test the cooling capacity of one evaporating side, corresponding to a set of calorimeter side system and compressor suction state control system, and cannot simultaneously test the compressor performance of the multi-evaporating temperature system

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