PROBLEM TO BE SOLVED: To provide a pressure decrease hindrance device that is able to hinder degradation in the function of a refrigeration cycle, resulting from outside-air cooling.SOLUTION: A capacitor 17 is provided in a refrigerant bypass passage 16 allowing communication between a passage upstream of a capacitor 11 and a passage downstream of it. Each of three-way valves 14, 15 is switchable a channel such that refrigerant discharged from a compressor 10 is bypassed, thereby flowing to the refrigerant bypass passage 16. A radiator 21 is able to heat outside air by heat exchange between outside air passing through it and cooling water for an engine 20. The capacitor 17 is installed downstream of the radiator 21 in a flowing direction of the outside air and, therefore, the capacitor is heated with the outside air. Accordingly, since a pressure decrease on a high-pressure side of a refrigeration cycle 1 can be hindered, a pressure difference between the high pressure side and a low pressure side can be ensured.SELECTED DRAWING: Figure 1

    【課題】外気冷却による冷凍サイクルの機能低下を抑制可能な圧力低下抑制装置を提供する。【解決手段】コンデンサ17は、コンデンサ11よりも上流側の通路と下流側の通路とを連絡する冷媒バイパス通路16に設けられている。三方弁14,15は、コンプレッサ10から吐出された冷媒が冷媒バイパス通路16に流れるバイパス状態になるように流路を切り換え可能である。ラジエータ21は通過する外気とエンジン20の冷却水との熱交換によって、外気を加熱できる。コンデンサ17は、ラジエータ21よりも外気の流れ方向の下流側に設置されているため、外気によって加熱される。これにより、冷凍サイクル1における高圧側の圧力低下を抑制できるので、高圧側と低圧側の圧力差を確保することができる。【選択図】図1


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    Title :

    PRESSURE DECREASE HINDRANCE DEVICE


    Additional title:

    圧力低下抑制装置


    Contributors:

    Publication date :

    2018-08-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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 / 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



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