Multi-temperature refrigerator based on large-glide temperature non-azeotropic working medium

Abstract

The invention discloses a multi-temperature refrigerator based on large-glide temperature non-azeotropic working medium. The multi-temperature refrigerator based on the large-glide temperature non-azeotropic working medium comprises a compressor, an air cooling condenser, a first heat exchanger, a second heat exchanger, a drying filter, a capillary, a first evaporator, a first electric adjustment valve, a first air-liquid separator, a second evaporator, a second electric adjustment valve, a third evaporator, a third electric adjustment valve, a fourth evaporator, a fourth electric adjustment valve and a second air-liquid separator, wherein the outlet end of the first evaporator is connected with the inlet of the first air-liquid separator, the outlet end of the fourth evaporator is connected with the second inlet end of the first heat exchanger, the second outlet end of the first heat exchanger is connected with the inlet end of the second air-liquid separator, the second outlet end of the first air-liquid separator is connected with the second inlet end of the second heat exchanger, and the second outlet end of the second heat exchanger is connected with the inlet end of the second air-liquid separator. The multi-temperature refrigerator based on the large-glide temperature non-azeotropic working medium resolves the problems that a single cycle is irreversible and causes serious loss, and temperature control is not accurate.

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 zeotropic working medium, which can realize multiple evaporation temperatures based on a large-slip temperature zeotropic working medium through a single cycle The unique multi-temperature refrigerator solves the problems of large irreversible loss in single cycle, imprecise temperature control and complex double cycle system

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