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    REFRIGERATION CYCLE DEVICE
    2.
    发明公开
    REFRIGERATION CYCLE DEVICE 审中-实审

    公开(公告)号：EP4421411A1

    公开(公告)日：2024-08-28

    申请号：EP24158405.1

    申请日：2024-02-19

    申请人： Toshiba Carrier Corporation

    发明人： ASARI, Shun ,  MIURA, Ken

    IPC分类号： F25B13/00 ,  F25B41/39 ,  F25B49/02

    CPC分类号： F25B13/00 ,  F25B2313/031420130101 ,  F25B2313/02320130101 ,  F25B2400/1320130101 ,  F25B2600/250920130101 ,  F25B2600/251320130101 ,  F25B2700/193120130101 ,  F25B2700/193320130101 ,  F25B2700/2120130101 ,  F25B2700/2115220130101 ,  F25B2700/17120130101 ,  F25B2600/250120130101 ,  F25B41/39 ,  F25B49/02

    摘要： According to one embodiment, a refrigeration cycle device (1, 11) includes a compressor (202), a condenser (203, 402), an evaporator (203, 402), a main flow path (8), a first branch path (81), a first expansion valve (812), a discharge temperature detector (208), a suction pressure detector (209), a discharge pressure detector (210), and a controller (6). The first branch path (81) diverts part of the refrigerant flowing from the condenser (203, 402) to the evaporator (203, 402) from the main flow path (8) at a position downstream from the condenser (203, 402) and guides the diverted refrigerant to the compressor (202). The first expansion valve (812) is controlled a degree of opening between a lower limit degree of opening and an upper limit degree of opening, and regulates a flow rate of the refrigerant flowing through the first branch path (81) according to the degree of opening. The controller (6) sets the upper limit degree of opening of the first expansion valve on the basis of at least one of a suction pressure detected by the suction pressure detector (209) and a discharge pressure detected by the discharge pressure detector (210) and a rotational speed of the compressor (202). The controller (6) corrects the set upper limit degree of opening of the first expansion valve on the basis of the discharge temperature detected by the discharge temperature detector (208).