Refrigerating system and air-conditioning system with same

Abstract

The invention provides a refrigerating system and an air-conditioning system with the same. The refrigerating system comprises a major refrigerating loop and a liquid injecting cooling loop. The major refrigerating loop comprises a gas-liquid separator, a compressor, a four-way reversing valve, an outdoor heat exchanger, a first capillary pipe and an indoor heat exchanger which are sequentially connected through refrigerating pipelines. The liquid injecting cooling loop comprises a liquid injecting capillary pipe and a valve which are sequentially connected, the first end of the liquid injecting cooling loop is connected between the first end of the first capillary pipe and the indoor heat exchange, the second end of the liquid injecting cooling loop is connected on a pipeline between the four-way reversing valve and the gas-liquid separator or connected on the gas-liquid separator. The refrigerating system effectively solves the problems that a compressor of an existing refrigerating system is too high in exhaust temperature and a liquid injecting capillary pipe is too long in the prior art.

Description

technical field [0001] The invention relates to the technical field of compressor refrigeration, in particular to a refrigeration system and an air-conditioning system having the same. Background technique [0002] In the air-conditioning and refrigeration system of the prior art, for high-temperature refrigeration or low-temperature heating, the compressor pressure ratio is too large and the exhaust temperature is too high. figure 1 As shown, the liquid refrigerant flows out from the outdoor heat exchanger 120', and part of the liquid refrigerant is sprayed to the suction port of the compressor 100' through the throttling element 150' and mixed with the superheated refrigerant at the outlet of the indoor heat exchanger 180' Entering the 100' suction port of the compressor, the enthalpy of the superheated refrigerant is reduced, thereby effectively reducing the exhaust temperature of the compressor. The performance is greatly reduced, so the spray volume should be controlle...

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Problems solved by technology

[0003] The present invention aims to provide a refrigeration system and an air-conditioning system with it, so as to solve the problems in the prior art that the exhaust temperature of the compressor in the refrigeration system is too high and the length of the liquid spray capillary is too long

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