Intermediate fractional condensation self-cascading refrigeration cycle system and refrigeration equipment

Abstract

The invention provides an intermediate fractional-condensation type auto-cascade refrigeration cycle system and refrigeration equipment. The intermediate fractional-condensation type auto-cascade refrigeration cycle system comprises a compressor, a first condenser, a gas-liquid separator, a first regenerator, a second condenser, a first throttle device and an evaporator. The first regenerator is provided with a first heat exchange channel and a second heat exchange channel. An outlet of the compressor is connected with an inlet of the first condenser. An outlet of the first condenser is connected with an inlet of the gas-liquid separator. A gas outlet of the gas-liquid separator is connected with an inlet of the second condenser, and an outlet of the second condenser is connected with an inlet of the evaporator sequentially through the first heat exchange channel and the first throttling device. A saturated liquid outlet of the gas-liquid separator is connected with an inlet of the compressor through the second heat exchange channel. An outlet of the evaporator is further connected with the inlet of the compressor. By the adoption of the intermediate fractional-condensation type auto-cascade refrigeration cycle system and the refrigeration equipment, the uniformity of temperature distribution in the refrigeration space is improved, the temperature variation is reduced, and thus the refrigeration effect is improved.

Description

technical field [0001] The invention relates to refrigeration equipment, in particular to an intermediate fractional condensation self-cascading refrigeration cycle system and refrigeration equipment. Background technique [0002] Refrigeration equipment (refrigerators, freezers, etc.) are widely used in people's daily life. Refrigeration equipment usually includes compressors, evaporators, condensers and throttling devices. Together they form a refrigeration system. However, when cooling at a lower temperature, the traditional refrigeration system has the problems of large pressure ratio, low exhaust volume, large irreversible loss in heat exchange and heat transfer, and low system performance. The self-cascade refrigeration system can realize refrigeration, and use the temperature glide during the phase transition of the zeotropic mixture to effectively reduce the irreversible heat transfer loss of the heat exchanger and improve the system performance. However, in actual...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an intermediate fractional condensing self-cascading refrigeration cycle system and refrigeration equipment, to solve the defects of low heat exchange efficiency and energy efficiency of refrigeration equipment in the prior art, and to realize the intermediate fractional condensing self-cascading refrigeration cycle system and refrigeration equipment. The cascade refrigeration cycle system improves the uniformity of temperature distribution in the refrigeration space and reduces the range of temperature changes to improve the refrigeration effect

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