To provide a vehicle air conditioner that secures satisfactory operation by suppressing uneven temperature of an evaporator.
The vehicle air conditioner 1 includes: a compressor 2 for compressing and discharging refrigerant; an outdoor heat exchanger 5 which is disposed outside a cabin, and functions as an outdoor condenser for dissipating heat of the refrigerant during cooling operation, while functioning as an outdoor evaporator for evaporating the refrigerant during heating operation; an evaporator 7 disposed in the cabin and evaporating the refrigerant; an overheat control valve 54 which is disposed on the downstream side of the outdoor heat exchanger 5 when the outdoor heat exchanger 5 functions as the outdoor evaporator, and adjusts the flow rate of the refrigerant so that the overheat is set to a first set overheat value when the overheat is generated at the outlet side of the outdoor heat exchanger 5; and an overheat control valve 48 which is disposed on the downstream side of the evaporator 7, and adjusts the flow rate of the refrigerant so that the overheat is set to a second set overheat value when the overheat is generated at the outlet side of the evaporator 7.
Yusuke Murata
Tomoyuki Miki
Takuya Matsuo
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