Refrigerating system based on non-azeotropic refrigerants and refrigerator

Abstract

A refrigerating system based on non-azeotropic refrigerants and a refrigerator are characterized in that the non-azeotropic refrigerants comprise a first refrigerant and a second refrigerant, under the condensing pressure of the second refrigerant, the boiling point of the first refrigerant is lower than the environment temperature, and the boiling point of the second refrigerant is higher than the environment temperature; and the refrigerating system comprises a compression unit, a condensation unit, a first filtering unit, a first throttling unit, a heat exchange unit, a second throttling unit and an evaporation unit. According to the refrigerating system, non-azeotropic mixed refrigerants are adopted as the refrigerants, so that the refrigerating system and the refrigerator can achieve the deep low temperature of -30 DEG C or below and maintain low-noise work of the refrigerating system for a long time.

Description

technical field [0001] The present application relates to the technical field of refrigeration, in particular to a refrigeration system. Background technique [0002] With the development of the refrigerator refrigeration industry, various refrigerators and freezers have appeared on the market. Their temperature coverage generally ranges from a dozen degrees Celsius to minus twenty degrees Celsius. This temperature range can meet most daily uses. . [0003] However, with the development of society and economy, ordinary people have more and more demands for deeper low temperature. For example, the fresh-keeping temperature of tuna is below -30°C, the lower the temperature, the better the effect of quick-freezing and fresh-keeping. The deep low temperature environment is very conducive to the quick freezing and preservation of food. Meat is easy to cool down quickly when stored in a deep low temperature environment, and quickly passes through the ice crystal formation zone o...

AI Technical Summary

Problems solved by technology

[0004] Household refrigeration appliances generally use a single refrigerant, most of which are R600a. Due to the characteristics of the refrigerant itself, its evaporation temperature is usually around -20 to -30°C, and it cannot work in a colder working environment. This limits the realization of more efficient household refrigeration appliances. low temperature requirements

Many home appliance companies have made explorations in this regard. For example, the use of R290 refrigerant can achieve a lower evaporation temperature, but the corresponding compressor has a large compression ratio, and the noise is relatively high and difficult to solve. It can only be used in some environments that do not require high environmental noise. The place

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