DUAL AIR CONDITIONER FOR VEHICLE

摘要

PURPOSE: A dual air-conditioning apparatus for vehicles is provided to additionally cool a refrigerant flowing to a rear air-conditioning apparatus according to the lower surface of a vehicle by being branched from a front air-conditioning apparatus, thereby improving cooling performance of the rear air-conditioning apparatus. CONSTITUTION: A dual air-conditioning apparatus for vehicles comprises a front air-conditioning apparatus(200) and a rear air-conditioning apparatus(300). The front air-conditioning apparatus includes a compressor(210), a condenser(220), a front expansion valve(230), and a front evaporator(240) and cools a front seat of the vehicle. The rear air-conditioning apparatus is comprised of a rear expansion valve(310) and rear evaporator(320) and cools a back seat of the vehicle. A heat exchanger(350) is installed on a refrigerant line facing to the rear expansion valve. The heat exchanger exchanges heat in condensation water generated in the front evaporator and a refrigerant flowing towards the rear expansion valve.