PROBLEM TO BE SOLVED: To provide a heat pump type air-conditioning system which uses a cooling refrigerant circuit and a heating ventilation and air conditioning unit (HVAC) of a current system, diversifies heat sources of heating to secure cooling/heating ability while achieving simplification of the structure, and enables an operation in a frost formation delay mode etc. during the heating.SOLUTION: In a vehicle air-conditioning system, a refrigerant/heat medium heat exchanger 16 which heats a heat medium circulating in a heater core 8 of a heating ventilation and air conditioning unit (HVAC) 2 is provided in a discharge pipeline 14A of a cooling refrigerant circuit 15. A heating bypass circuit 18 which reaches a receiver 12 through switching means 17 is connected to the downstream side of the refrigerant/heat medium heat exchanger 16. Further, a second circuit 20 having second decompression means 19 in between an outlet of the receiver 12 and one end of a vehicle exterior heat exchanger 11 and a third circuit 22 having an electromagnetic valve 21 in between the other end of the vehicle exterior heat exchanger 11 and a suction circuit 14F are provided. A heating refrigerant circuit 23 is formed by a motor compressor 10, the refrigerant/heat medium heat exchanger 16, the switching means 17, the heating bypass circuit 18, the receiver 12, the second circuit 20, the vehicle exterior heat exchanger 11, and the third circuit 22.SELECTED DRAWING: Figure 1
【課題】現行システムの冷房用冷媒回路、HVACを流用し、構成の簡素化等を図りながら暖房熱源を多様化して冷暖房能力を確保でき、暖房時に着霜遅延モード等での運転をも可能としたヒートポンプ式の空調システムを提供する。【解決手段】冷房用冷媒回路15の吐出配管14Aに、HVACユニット2のヒータコア8に循環する熱媒体を加熱する冷媒/熱媒体熱交換器16を設け、その下流に切替え手段17を介してレシーバ12に至る暖房用バイパス回路18を接続すると共に、レシーバ12の出口と車外熱交換器11の一端間に第2減圧手段19を有する第2回路20、車外熱交換器11の他端と吸入回路14F間に電磁弁21を有する第3回路22を設け、電動圧縮機10、冷媒/熱媒体熱交換器16、切替え手段17、暖房用バイパス回路18、レシーバ12、第2回路20、車外熱交換器11、第3回路22により暖房用冷媒回路23を構成した車両用空調システム。【選択図】図1
HEAT PUMP TYPE VEHICLE AIR CONDITIONING SYSTEM
ヒートポンプ式車両用空調システム
2016-05-30
Patent
Elektronische Ressource
Japanisch
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 |
HEAT PUMP TYPE AIR-CONDITIONING CONTROL DEVICE FOR VEHICLE
Europäisches Patentamt | 2015
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