Gas-liquid phase ejector synergy refrigeration system for double temperature direct cooling-type refrigerator

Abstract

The invention discloses a gas-liquid phase ejector synergy refrigeration system for a double temperature direct cooling-type refrigerator, wherein a compressor, a condenser, a drying filter, a first capillary tube and a cold storage room evaporator are connected in sequence; an outlet of the cold storage room evaporator is connected with an inlet of a gas and liquid mixer of an ejector; an injected refrigerant inlet of the ejector is connected with the outlet of a frozen chamber evaporator; the outlet of the ejector is connected with the inlet of a gas-liquid separator; a saturated gaseous refrigerant outlet of the gas-liquid separator is connected with the inlet of the compressor through a compressor air suction pipe with a backheating effect; a saturated liquid refrigerant outlet is connected with the inlet of the frozen chamber evaporator through a second capillary tube; the ejector is a gas-liquid phase ejector, and the working fluid of the gas-liquid phase ejector is mixed gas-liquid refrigerants flowing out from the outlet of the cold storage room evaporator; in addition, the gas-liquid phase ejector is utilized to fully recover the expansion work in the refrigeration system during the throttling process, the suction pressure and the gas delivery capacity of the compressor can be increased obviously, the power consumption of the compressor can be reduced, and simultaneous refrigeration of the cold storage room evaporator and the frozen chamber evaporator can be achieved at different evaporating temperatures.

Description

technical field [0001] The invention belongs to the technical field of refrigerator refrigeration, and in particular relates to a gas-liquid two-phase flow injector synergistic refrigeration system for a dual-temperature direct-cooling refrigerator. Background technique [0002] Currently, refrigerators are one of the most commonly used household appliances. Because household refrigerators work around the clock, they account for a considerable proportion of household electricity consumption, which makes the energy-saving problem of refrigerators extremely prominent. With the improvement of energy efficiency standards for refrigerators, and in order to reduce the energy consumption of refrigerators, the development of related energy-saving technologies in the field of refrigerators has been a research topic that has been widely concerned at home and abroad. Therefore, developing new refrigeration technology for refrigerators and improving the energy-saving level of refrigera...

AI Technical Summary

Problems solved by technology

However, in these circulation methods, conventional gas-gas injectors are used, that is, both the working fluid and the ejected fluid are in the gas phase; the application of this gas-gas injector in the circulation system is beneficial to the recycling system. The expansion work of the refrigerant throttling process is not sufficient, so it has limited ability to improve system performance

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