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    VAPOR COMPRESSION REFRIGERATION CYCLE DEVICE
    5.
    发明公开
    VAPOR COMPRESSION REFRIGERATION CYCLE DEVICE 审中-公开

    公开(公告)号：EP4382832A1

    公开(公告)日：2024-06-12

    申请号：EP23212256.4

    申请日：2023-11-27

    申请人： Panasonic Intellectual Property Management Co., Ltd.

    发明人： Imagawa, Tsuneko ,  Yamaoka, Yuki ,  Bando, Yasuaki

    IPC分类号： F25B13/00 ,  F25B49/02

    CPC分类号： F25B2600/251320130101 ,  F25B2600/250920130101 ,  F25B2600/025320130101 ,  F25B2400/1320130101 ,  F25B2700/2115220130101 ,  F25B2700/2115120130101 ,  F25B2700/193120130101 ,  F25B2700/193320130101 ,  F25B13/00 ,  F25B49/02

    摘要： [Object] It is an object of the present invention to provide a vapor compression refrigeration cycle device capable of obtaining necessary heating ability when an injection amount becomes small.
    [Solving Means] A vapor compression refrigeration cycle device of the invention includes: a main refrigerant circuit 10 formed by sequentially connecting a compressor 11, a use-side heat exchanger 12, an intermediate heat exchanger 13, a first expansion device 14 and a heat source-side heat exchanger 15 to one another through a refrigerant pipe 16; a bypass refrigerant circuit 20 which branches off from the refrigerant pipe 16 located between the use-side heat exchanger 12 and the first expansion device 14, and which is formed by sequentially connecting a second expansion device 21, the intermediate heat exchanger 13 and a compression midstream of the compressor 11; and a control device 50 for controlling valve opening degrees of the first expansion device 14 and the second expansion device 21; wherein when a pressure ratio of discharge pressure of refrigerant discharged from the compressor 11 and suction pressure of refrigerant sucked into the compressor 11 is equal to or smaller than a reference pressure ratio, the control device 50 controls the compressor 11 such that number of rotations of the compressor 11 is increased.