| 摘要 |
PROBLEM TO BE SOLVED: To prevent freezing of a heat exchanger due to iced water droplets on surfaces of the heat exchanger.SOLUTION: In a vehicular air conditioner 50, a first blower unit 56 is connected via a connection duct 54 to a side portion of a casing 52 forming air passages, and a second blower unit 62 different from the first blower unit 56 is connected to a lower portion of the casing 52. On the basis of a load voltage to a second blower fan 138 of the second blower unit 62, a control part 160 drives a draft changeover damper 136 to place a first front passage 74 and a first rear passage 130 in communication, whereby a portion of air from the first blower unit 56 is supplied to a second cooling section 78 of an evaporator 58 via the first front passage 74, a communication opening 134 and the first rear passage 130 to avoid freezing of water droplets on the second cooling section 78 when the second blower fan 138 is rotated at low speed or is not driven at all. |
