VEHICULAR AIR CONDITIONER

To suppress refrigerants from accumulating in an outdoor heat exchanger, while effectively utilizing heat in an object to be temperature-regulated for heating the inside of a vehicle interior.SOLUTION: A vehicular air conditioner comprises: a refrigerant circuit which includes a compressor that compresses a refrigerant, a heating part that heats blown air that is blown to a space to be air-regulated, and an outdoor heat exchanger that absorbs heat of the refrigerant; an instrument temperature regulating circuit including a heat exchanger for an object to be temperature-regulated that regulates a temperature of the object to be temperature-regulated mounted on a vehicle using the refrigerant; and a control device that controls the refrigerant circuit and the instrument temperature regulating circuit. The control device has at least a mode of heat-absorbing/heating an object to be temperature-regulated in which the heat exchanger for an object to be temperature-regulated absorbs heat of the refrigerant ejected from the compressor and then heated in the heating part in heating-operation of heating the inside of the vehicle interior using the heating part and a combined heating mode in which the outdoor heat exchanger and the heat exchanger for an object to be temperature-regulated absorb the heat, which determines an operation state where the refrigerant can accumulate in the outdoor heat exchanger, during heating-operation by the combined heating mode, and performs control so that the mode is switched to the mode of heat-absorbing/heating an object to be temperature-regulated and then the heating-operation is executed.SELECTED DRAWING: Figure 1 【課題】被温調対象の熱を車室内の暖房に有効利用しながら、室外熱交換器における冷媒の蓄積を抑制する。【解決手段】冷媒を圧縮する圧縮機、空調対象空間へ送風される送風空気を加熱する加熱部、及び、前記冷媒の吸熱を行う室外熱交換器を含む冷媒回路と、前記冷媒を用いて車両に搭載された被温調対象の温度を調整する被温調対象用熱交換器を含む機器温度調整回路と、前記冷媒回路及び前記機器温度調整回路を制御する制御装置を備え、前記制御装置は、前記加熱部を用いて前記車室内を暖房する暖房運転において、前記圧縮機から吐出し前記加熱部にて放熱した前記冷媒を、前記被温調対象用熱交換器において吸熱する被温調対象吸熱暖房モードと、前記室外熱交換器及び前記被温調対象用熱交換器において吸熱する併用暖房モードと、を少なくとも有し、前記併用暖房モードによる暖房運転時において、前記室外熱交換器に前記冷媒が蓄積し得る運転状態を判定し、前記被温調対象吸熱暖房モードに切り替えて暖房運転を実行するよう制御する、車両用空調装置を提供する。【選択図】図１