REFRIGERATING CYCLE SYSTEM WITH WATER HEAT EXCHANGER

摘要

A refrigeration cycle system with a water refrigerant heat exchanger is provided to improve car output and fuel efficiency, and to provide hot air at initial driving by heating engine cooling water so as to allow immediate driving to be possible after starting a car engine. A refrigeration cycle system with a water refrigerant heat exchanger(32) comprises a compressor(20), a gas cooler(22), an expansion valve(24) and an evaporator(26), a liquid receiver(28) and an inside heat exchanger(30). The gas cooler is installed in a discharge line of the compressor. The expansion valve and the evaporator are sequentially installed in the discharge line of the gas cooler. The liquid receiver is installed in a line between the evaporator and the compressor. The inside heat exchanger is installed in a line between the liquid receiver and the compressor. The water refrigerant heat exchanger is installed between the compressor and the gas cooler so that refrigerant forming a refrigeration cycle is heat-exchanged with cooling water flowed from an engine(E). A heater(34) is installed in a discharge line of the cooling water for the water refrigerant heat exchanger.