REFRIGERANT CYCLE OF AIR CONDITIONER FOR VEHICLES

摘要

PURPOSE: A cooling cycle of a vehicle air-conditioner is provided to prevent the focusing of superheat on the specific section of inside an evaporator. CONSTITUTION: A cooling cycle of a vehicle air-conditioner comprises a compressor(10), a condenser(20), an expansion valve(30) and an evaporator(40). The compressor sucks and compresses the refrigerant. The condenser condenses the compressed refrigerant. The expansion valve branches the condensed refrigerant to a first passage and a second passage and throttles the condensed refrigerant. The evaporator comprises a first evaporator portion(41) and a second evaporator portion(42). The first evaporator portion evaporates the refrigerant provided through the first passage of the expansion valve. The second evaporator portion evaporates the refrigerant provided through the second passage of the expansion valve. The refrigerant flowing direction of the first evaporator portion inside is opposite to the refrigerant flowing direction of the second evaporator portion inside.