AIR CONDITIONER FOR VEHICLE

To provide an air conditioner for vehicle capable of suppressing deterioration of cooling efficiency of a cooling object to a minimum, while maintaining air conditioning capacity, in performing air conditioning in a cabin and cooling of the cooling object.SOLUTION: An air conditioner 1 for vehicle includes a refrigeration cycle device 10, a solenoid valve 14a for air conditioning and a solenoid valve 14b for battery, a switching control part 50a, a flow rate control part 50b for cooling, and a minimum opening determination part 50c. The refrigeration cycle device 10 includes a compressor 11, an evaporator 16 for air conditioning, an evaporator 19a for right side battery and an evaporator 19b for left side battery, and an expansion valve 18a for right side battery and an expansion valve 18b for left side battery. The minimum opening determination part 50c determines a minimum opening of the expansion valve 18a for right side battery and the expansion valve 18b for left side battery in Step S414. The minimum opening determination part 50c determines the minimum opening in an air conditioning cooling cycle at a value smaller than the minimum opening in a cooling single cycle.SELECTED DRAWING: Figure 14 【課題】車室内の空調と冷却対象物の冷却を行う際に、空調能力の維持を図ると共に、冷却対象物の冷却効率の低下を最小限に抑制できる車両用空調装置を提供する。【解決手段】車両用空調装置１は、冷凍サイクル装置１０と、空調用電磁弁１４ａ及び電池用電磁弁１４ｂと、切替制御部５０ａと、冷却用流量制御部５０ｂと、最小開度決定部５０ｃとを有している。冷凍サイクル装置１０は、圧縮機１１と、空調用蒸発器１６と、右側電池用蒸発器１９ａ及び左側電池用蒸発器１９ｂと、右側電池用膨張弁１８ａ及び左側電池用膨張弁１８ｂとを有している。最小開度決定部５０ｃは、ステップＳ４１４において、右側電池用膨張弁１８ａ及び左側電池用膨張弁１８ｂの最小開度を決定する。最小開度決定部５０ｃは、空調冷却サイクルにおける最小開度を、冷却単独サイクルにおける最小開度よりも小さな値に決定する。【選択図】図１４