AIR CONDITIONING CONTROL DEVICE FOR VEHICLE

PROBLEM TO BE SOLVED: To provide an air conditioning control device for a vehicle which can improve heating efficiency by inside air circulation without crystallization of supercooled water.SOLUTION: An air conditioning control device includes: an air conditioner 2 comprising a defroster blowout port 11c and a blower fan 12 capable of blowing out air-conditioning air, into which outside air is introduced, to an inner surface of a window glass 1 and capable of controlling the amount of the air-conditioning air; and a heater core 14 and a PTC heater 15 which heat the air-conditioning air. The air conditioning control device is provided with a control unit 30 which includes a temperature and humidity sensor 42, an outside air temperature sensor 43, a vehicle stopping time detection part 33, and a supercooling level determination part 34 for determining a supercooling level of supercooled water adhering to the inner surface of window glass 1 based on at least the detected inner surface temperature T1 of the window glass 1, outside air temperature T3, and vehicle stop duration time t1, and when the supercooling level of the water is high, controls the air conditioner 2 so that the amount of the air-conditioning air is made smaller than that at the time when the supercooling level is low. 【課題】過冷却水の結晶化を生じさせることなく、内気循環による暖房効率を向上できる車両用空調制御装置を提供する。【解決手段】ウインドガラス１の内面に外気を導入した空調風を吹き出し可能で且つその風量を制御可能なデフロスタ吹出口１１ｃとブロアファン１２等を有する空調装置２と、空調風を加熱するヒータコア１４及びＰＴＣヒータ１５とを備え、温湿度センサ４２と、外気温センサ４３と、停車時間検出部３３と、少なくとも、検出されたウインドガラス内面温度Ｔ１と外気温度Ｔ３と停車継続時間ｔ１とに基づいてウインドガラスの内面に付着している水分が過冷却状態になっている過冷却レベルを判定する過冷却レベル判定部３４とを備え、水分の過冷却レベルが高いとき、過冷却レベルが低いときに比べて空調風の風量を低下するように空調装置２を制御するコントロールユニット３０を設けた。【選択図】 図３