| 摘要 |
PROBLEM TO BE SOLVED: To perform heating operation for feeding heating air with high quality into a cabin without reduction of heating efficiency. SOLUTION: The air-conditioning unit 11 includes a first air-feeding passage 14 and a second air-feeding passage 15 flowing with blown air introduced from an air introduction port 16; a heater core 52 arranged in the first air-feeding passage 14; an evaporator 46 arranged in the second air-feeding passage 15; air-feeding outlets 26, 27, 28 provided in a downstream of the heater core 52 and the evaporator 46; a cooled air circulation passage 32 for returning the cooled air passing through the evaporator 46 to an upstream side of the heater core 52; a circulation door 33 for leading the cooled air passing through the evaporator 46 to the cooled air circulation passage 32; and an air-discharge door 35 capable of returning the cooled air passing through the evaporator 46 to the heater core 52 through the cooled air circulation passage 32 and discharging it from an air discharge port 34 to the outside of the cabin. COPYRIGHT: (C)2010,JPO&INPIT
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