| 摘要 |
PURPOSE: A vehicle air conditioning system is provided to achieve an improved evaporating efficiency of evaporators and cooling efficiency of motor vehicle by preventing evaporators from being supercooled and iced. CONSTITUTION: A condenser(1) has two condensers(2,3), and a receiver dryer(4) and a pair of three-way valves(5,6) are connected to condensers. Front evaporators(7,701) and rear evaporators(8,801) are installed to three-way valves. Evaporators have output side refrigerant pipes(9,901) with a preheating member so as to thereby prevent evaporators from being iced. The preheating member is constituted by arranging output side refrigerant pipes of evaporators to tightly contact an engine coolant circulation pipe(10). Alternatively, the preheating member is a preheat device for supplying heat source to refrigerant pipes. Alternatively, refrigerant pipes are exposed outward from the motor vehicle so as to thereby prevent icing of evaporators by the atmospheric temperature.
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