PROBLEM TO BE SOLVED: To provide a heat pump cycle capable of simultaneously eliminating shortage of a lubricant in a compressor and increasing a heating capacity.SOLUTION: A refrigerant introduction passage 18 for introducing a part of gas-phase refrigerant flowing in an intermediate-pressure refrigerant passage 15 into an accumulator 30, is connected to the intermediate-pressure refrigerant passage 15 for guiding the gas-phase refrigerant separated by a gas-liquid separator 14, to an intermediate-pressure port 11b of a compressor 11. The refrigerant introduction passage 18 has a flow channel cross-sectional area smaller than that of the intermediate-pressure refrigerant passage 15 so that its pressure loss is increased in comparison with that of the intermediate-pressure refrigerant passage 15.SELECTED DRAWING: Figure 1

    【課題】圧縮機の潤滑油不足の解消、および暖房能力の増加を両立させることが可能なヒートポンプサイクルを提供する。【解決手段】気液分離器14で分離された気相冷媒を圧縮機11の中間圧ポート11bへ導く中間圧冷媒通路15に対して、中間圧冷媒通路15を流れる気相冷媒の一部をアキュムレータ30の内部に導入する冷媒導入通路18を接続する。この冷媒導入通路18は、中間圧冷媒通路15に比べて圧力損失が大きくなるように、流路断面積が中間圧冷媒通路15よりも小さくなっている。【選択図】図1


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    Title :

    HEAT PUMP CYCLE


    Additional title:

    ヒートポンプサイクル


    Contributors:
    KAMI YUICHI (author)

    Publication date :

    2016-12-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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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