To control oil return at proper timing in a refrigeration device comprising two evaporators connected in parallel.SOLUTION: A refrigeration cycle device is configured such that a first decompression unit 54 and a first evaporator 23, and a second decompression unit 55 and a second evaporator 33 are respectively connected in parallel, and enables first blower independent operation in which a first blower blows air to the first evaporator and a second blower does not blow air to the second evaporator. When an operation time of a compressor in the first blower independent operation reaches a predetermined time, a control unit executes oil return control of controlling the operation of the compressor so that low pressure on a suction side of the compressor fluctuates. The control unit fluctuates a predetermined time based on a rotation speed of the compressor in the first blower independent operation.SELECTED DRAWING: Figure 1

    【課題】並列接続された2つの蒸発器を備える冷凍サイクル装置において、適切なタイミングでオイル戻し制御を行う。【解決手段】冷凍サイクル装置は、第1減圧部54および第1蒸発器23と、第2減圧部55および第2蒸発器33が並列に接続され、第1送風機が第1蒸発器に送風し、第2送風機が第2蒸発器に送風しない第1送風機単独運転が可能となっている。制御部は、第1送風機単独運転における圧縮機の作動時間が所定時間に到達した場合に、圧縮機吸入側の低圧圧力が変動するように圧縮機の作動を制御するオイル戻し制御を実行する。制御部は、第1送風機単独運転における圧縮機の回転数に基づいて所定時間を変動させる。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    REFRIGERATION CYCLE DEVICE AND VEHICULAR AIR CONDITIONER


    Additional title:

    冷凍サイクル装置および車両用空調装置


    Contributors:

    Publication date :

    2020-12-03


    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



    VEHICULAR REFRIGERATION CYCLE DEVICE

    YAMAGUCHI MOTOHIRO / HIGUCHI TERUKAZU | European Patent Office | 2018

    Free access


    VEHICULAR REFRIGERATION CYCLE UNIT

    KOBAYASHI TAKAYUKI / UKAI TETSUZO / YAMAMOTO HIROYUKI et al. | European Patent Office | 2023

    Free access

    VEHICULAR REFRIGERATION CYCLE UNIT

    KOBAYASHI TAKAYUKI / UKAI TETSUZO / YAMAMOTO HIROYUKI et al. | European Patent Office | 2024

    Free access

    VEHICULAR REFRIGERATION CYCLE UNIT

    KOBAYASHI TAKAYUKI / UKAI TETSUZO / YAMAMOTO HIROYUKI et al. | European Patent Office | 2023

    Free access