To provide an air conditioner for vehicle which shortens the switching time while preventing the generation of noise at the switching of driving modes of a refrigeration cycle.SOLUTION: In an air conditioner for vehicle, a compressor 11, a first heat exchanger 2, a first expansion device 12, a cabin-outside heat exchanger 4, a second expansion device 14 and a second heat exchanger 3 are connected in the loop shape at least in this order. The air conditioner for vehicle includes a refrigeration cycle in which the first heat exchanger 2 and the first expansion device 12 are connected and the cabin-outside heat exchanger 4 and the second expansion device 14 are connected via a first bypass flow path 16 that includes a first refrigerant control unit 15, a reverse-flow blocking part 13 is provided on the downstream side of the cabin-outside heat exchanger 4 and on the upstream side with respect to a confluent portion with the first bypass flow path 16, the cabin-outside heat exchanger 4 and the reverse-flow blocking part 13 are connected and the second heat exchanger 3 and the compressor 11 are connected via a second bypass flow path 18 that includes a second refrigerant control unit 17. The second refrigerant control unit 17 is constituted by a throttle valve that can narrow down and open/close the second bypass flow path 18.SELECTED DRAWING: Figure 1
【課題】冷凍サイクルの運転モードの切替時に、騒音の発生を防止しつつ切り替え時間を短縮する車両用空調装置を提供する。【解決手段】圧縮機11、第1の熱交換器2、第1の膨張装置12、車室外熱交換器4、第2の膨張装置14、第2の熱交換器3を少なくともこの順でループ状に接続し、第1の熱交換器2と第1の膨張装置12との間と、車室外熱交換器4と第2の膨張装置14との間を、第1の冷媒制御部15を備えた第1のバイパス流路16を介して接続し、車室外熱交換器4の下流側であって第1のバイパス流路16との合流部位より上流側に逆流阻止部13を設け、車室外熱交換器4と逆流阻止部13との間と、第2の熱交換器3と圧縮機11との間を、第2の冷媒制御部17を備えた第2のバイパス流路18を介して接続する冷凍サイクルを備え、第2の冷媒制御部17を、第2のバイパス流路18を絞ること及び開閉することが可能な絞り弁によって構成する。【選択図】 図1
AIR CONDITIONER FOR VEHICLE AND DRIVING MODE SWITCHING METHOD
車両用空調装置及び運転モード切替方法
03.06.2021
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 / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS |
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