Compressing and injecting mixed cycle refrigerating method and device for electric refrigerator

Abstract

The invention provides a method for compression-jetting mixed circulation refrigeration for a refrigerator and the arrangement for the circulation refrigeration. Wherein, an injector is connected between the outlets of two evaporimeters of the refrigerating chamber and the freezing chamber of the refrigerator and an air-return pipe of the compressor, so as to mix the refrigerant of different pressures generated by the two evaporimeters of the refrigerating chamber and the freezing chamber, hence form a mixed flow of moderate pressure, which enters into the air-return pipe of the compressor, this will increase the pressure of the returned air of the compressor, and reduce the pressure ratio, and improve the refrigerating performance of the compressor. The invention is of simple structure, easy to manufacture, low cost, and runs reliably, is applicable for connecting with pipelines of different refrigerator systems to improve the evenness and controllability of the temperature in the refrigerating chambers, and reduce the loss in useable energy due to too high temperature difference in the refrigerating chambers, hence to save energy for refrigerators. The invention is applicable for industrial production.

Description

technical field [0001] The invention discloses a refrigerator cycle refrigeration method and device, in particular to a refrigerator compression / jetting mixed cycle refrigeration method and device. Background technique [0002] Along with popularizing of household electrical appliances, the energy-saving problem of household electric refrigerator is more and more paid close attention to. At present, household refrigerators at home and abroad basically use capillary tubes for throttling. In ordinary dual-temperature refrigerators, the refrigerant after capillary throttling enters the evaporators of the freezer and refrigerator in turn, and passes through the same evaporation temperature (approximately - 29°C) to maintain the temperature of the freezer (-18°C) and the temperature of the refrigerator (5°C), because the large heat transfer temperature difference in the refrigerator will cause considerable loss of available energy. Warm refrigerators are even more serious. Ther...

AI Technical Summary

Problems solved by technology

At present, household refrigerators at home and abroad basically use capillary tubes for throttling. In ordinary dual-temperature refrigerators, the refrigerant after capillary throttling enters the evaporators of the freezer and refrigerator in turn, and passes through the same evaporation temperature (approximately - 29°C) to maintain the temperature of the freezer (-18°C) and the temperature of the refrigerator (5°C), because the large heat transfer temperature difference in the refrigerator will cause considerable loss of available energy. Warm refrigerator is more serious

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