| 摘要 |
PROBLEM TO BE SOLVED: To reduce heating load during heating operation in an air-conditioning for a vehicle adopting a rotary door as a door for switchingly opening/closing an inside air introduction port and an outside air introduction port of an inside/outside switching case. SOLUTION: The inside/outside air switching case 10 has a subsidiary inside air introduction port 18 for introducing inside air, separately from the inside air introduction ports 11, 12. Thus, even when the inside air introduction ports 11, 12 are closed with the rotary door 20 during heating operation to introduce outside air for preventing the occurrence of cloudiness on a front glass, the inside air is introduced by the subsidiary inside air introduction port 18 and mixed into the outside air. Even when the temperature of the outside air is extremely low, the inside air having a temperature higher than the outside air is mixed therein to reduce the heating load of the air-conditioner during heating operation. COPYRIGHT: (C)2004,JPO
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