A Multi-temperature Refrigerator Based on Large Slip Temperature Zeotropic Working Fluid

Abstract

The invention discloses a multi-temperature refrigerator based on a non-azeotropic working medium with a large slip temperature, including a compressor, an air-cooled condenser, a first heat exchanger, a second heat exchanger, a dry filter, a capillary tube, and a first evaporator , the first electric regulating valve, the first gas-liquid separator, the second evaporator, the second electric regulating valve, the third evaporator, the third electric regulating valve, the fourth evaporator, the fourth electric regulating valve and the second gas Liquid separator; the outlet port of the first evaporator is connected with the inlet port of the first gas-liquid separator, the outlet port of the fourth evaporator is connected with the second inlet port of the first heat exchanger, and the second inlet port of the first heat exchanger Two outlet ports are connected with the inlet port of the second gas-liquid separator; the second outlet port of the first gas-liquid separator is connected with the second inlet port of the second heat exchanger, and the second outlet port of the second heat exchanger is connected with the second outlet port of the second heat exchanger. The inlet end of the second gas-liquid separator is connected. The multi-temperature refrigerator solves the problems of large irreversible loss in a single cycle and inaccurate temperature control.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and relates to a multi-temperature refrigerator based on a non-azeotropic working medium with a large slip temperature. Background technique [0002] At present, the cycles used by multi-temperature refrigerators can be roughly divided into: a) single cycle; b) compressor double cycle; c) separate double cycle; d) bypass double cycle. Among them, the evaporation temperature of the freezer is uniformly used in the single cycle, and the heat transfer temperature difference is large, the irreversible loss is large, and the temperature control is not accurate. The dual cycle of the compressor can realize the independent control of the dual temperature, but the selected compressor is small, the efficiency is reduced, the cost is increased, and the system is complicated. The discrete double circulation cannot provide cooling capacity to multiple evaporators at the same time, and the temperature ...

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The technical problem to be solved by the present invention is to provide a multi-temperature refrigerator based on a large-slip temperature non-azeotropic working medium, which can realize multiple evaporation temperatures based on a large-slip temperature non-azeotropic refrigerant through a single cycle. Multi-temperature refrigerator with boiling working medium, so as to solve the problems of large irreversible loss in single cycle, inaccurate temperature control, and complex double cycle system

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