| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular air conditioner capable of reducing power consumption of an electric compressor without deteriorating air conditioning feeling when heating. SOLUTION: When an occupant is present, operation is switched to a heat pump cycle for heating the heat medium (water) with a water-refrigerant heat exchanger 24 arranged in a ceiling part of a vehicle to heat the air blowing into a cabin with a heater core 29 using the heat medium as a heat source and arranged in a floor part, and air is blown out toward feet of the occupant to improve the air conditioning feeling. When no occupant is present, operation is switched to a heat pump cycle for directly heating the air blowing into the cabin with a cabin-inside heat exchanger 25 arranged in the ceiling part of the vehicle, and heat transmitting efficiency is improved to reduce power consumption of the electric compressor 21. COPYRIGHT: (C)2008,JPO&INPIT
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