To provide a vehicular air-conditioning device improved in readiness by avoiding shortage of capability (target rotational frequency) of a compressor when shifted in an operational state in which the number of evaporators for evaporating a coolant is increased.SOLUTION: A vehicular air-conditioning device has: a first operational state for evaporating a coolant by a heat absorber 9 or a coolant - medium heat exchanger 64; and a second operational state for evaporating the coolant by both of them. The vehicular air-conditioning device is configured to: calculate a target rotational frequency of a compressor 2 by F/F calculation on the basis of target heat absorber temperature TEO of heat absorber temperature Te or target heat medium temperature TWO of heat medium temperature Tw; and correct the target rotational frequency in the second operational state in a direction so that an F/F operation amount calculated by the F/F calculation is larger than that in the first operational state.SELECTED DRAWING: Figure 1
【課題】冷媒を蒸発させる蒸発器の数が増える運転状態に移行した際の圧縮機の能力(目標回転数)不足を回避して、即応性を向上させた車両用空気調和装置を提供する。【解決手段】吸熱器9か冷媒−熱媒体熱交換器64にて冷媒を蒸発させる第1の運転状態と、双方で冷媒を蒸発させる第2の運転状態を有し、吸熱器温度Teの目標吸熱器温度TEOや熱媒体温度Twの目標熱媒体温度TWOに基づくF/F演算により圧縮機2の目標回転数を算出すると共に、第2の運転状態において、第1の運転状態よりも、F/F演算により算出されるF/F操作量を大きくする方向で補正する。【選択図】図1
VEHICULAR AIR-CONDITIONING DEVICE
車両用空気調和装置
2020-07-02
Patent
Electronic Resource
Japanese
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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