PROBLEM TO BE SOLVED: To provide a heat pump type vehicular air-conditioning system capable of generating hot air in an indoor unit immediately after start of defrosting operation, a defrosting processing method and a control program for the vehicular air-conditioning system.SOLUTION: A vehicular air-conditioning system includes: a refrigerant system P1; a hot water system P2; a refrigerant indoor system P4; an engine cooling water system P3; and a mode switching section for selectively switching between a normal operation mode of radiating heat that has been absorbed in an outdoor heat exchanger 13 and undergone heat exchange by a water/refrigerant heat exchanger 11 by using a heater 15 with a refrigerant opening/closing section closed and a defrosting operation mode of radiating heat that has been absorbed by an evaporator 14 by using the outdoor heat exchanger 13 with the refrigerant opening/closing section and a four-way valve V4 of a hot water opening/closing section opened. The mode switching section includes: a hot water flow passage switching section for opening the four-way valve V4 on the basis of a temperature of engine cooling water; and a refrigerant flow passage switching section for opening the refrigerant opening/closing section after the four-way valve V4 is operated.SELECTED DRAWING: Figure 1
【課題】デフロスト開始直後にも室内ユニットで温風を生成できるヒートポンプ式の車両用空調システム、デフロスト処理方法、車両用空調システムの制御プログラムを提供する。【解決手段】冷媒系統P1と、温水系統P2と、冷媒室内系統P4と、エンジン冷却水系統P3と、を備え、冷媒用開閉部が閉状態で、室外熱交換器13で吸熱されて水/冷媒熱交換器11で熱交換された熱をヒータ15で放熱する通常運転モードと、冷媒用開閉部及び温水用開閉部の四方弁V4が開状態で、エバポレータ14で吸熱された熱を室外熱交換器13で放熱するデフロスト運転モードと、を択一的に切替えるモード切替部と、を備え、モード切替部が、エンジン冷却水の温度に基づいて四方弁V4を開く温水流路切替部と、四方弁V4の作動以後に冷媒用開閉部を開く冷媒流路切替部と、を有している。【選択図】図1
VEHICULAR AIR-CONDITIONING SYSTEM AND DEFROSTING PROCESSING METHOD AND PROGRAM FOR VEHICULAR AIR-CONDITIONING SYSTEM
車両用空調システム、車両用空調システムのデフロスト処理方法及びプログラム
2018-10-04
Patent
Electronic Resource
Japanese
IPC: | F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / 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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