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    HEAT MEDIUM CIRCULATION SYSTEM
    1.
    发明公开
    HEAT MEDIUM CIRCULATION SYSTEM 审中-公开

    公开(公告)号：EP4443075A1

    公开(公告)日：2024-10-09

    申请号：EP22898212.0

    申请日：2022-09-20

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

    发明人： MORIWAKI, Shunji ,  YAMAOKA, Yuki ,  IMAGAWA, Tsuneko ,  AOYAMA, Shigeo ,  MACHIDA, Kazuhiko ,  NAKATANI, Kazuhito ,  YOSHIDA, Jun ,  BANDO, Yasuaki

    IPC分类号： F25B1/00 ,  F24H15/375 ,  F25B49/02

    CPC分类号： F25B49/02 ,  F25B1/00 ,  F24H15/375

    摘要： A heat medium circulation system 100 comprises a refrigerant circuit 110 in which a compressor 111, a use-side heat exchanger 112, an expansion device 113, and a heat source-side heat exchanger 114 are annularly connected, a heat medium circuit 120 for circulating a heat medium cooled or heated by the use-side heat exchanger 112 using refrigerant discharged from the compressor 111, and a control device 130. The heat medium circuit 120 includes a circulation device for circulating the heat medium, a heating device 127 for electrically heating the heat medium, and a deaerating device 128 for discharging gas from inside the heat medium circuit 120 to outside the heat medium circuit 120.The circulation device is placed upstream of the use-side heat exchanger 112, the heating device 127 is placed downstream of the use-side heat exchanger 112 and on a side higher than the use-side heat exchanger 112, and the deaerating device 128 is placed downstream of the heating device 127 and on a side higher than the heating device 127, thereby providing a heat medium circulation system 100 that safely diffuses leaked refrigerant into the outdoor atmosphere and enhances safety.

    SHUT-OFF UNIT, AIR-CONDITIONING DEVICE COMPRISING SAME, AND VACUUM DRAWING METHOD
    6.
    发明公开
    SHUT-OFF UNIT, AIR-CONDITIONING DEVICE COMPRISING SAME, AND VACUUM DRAWING METHOD 审中-实审

    公开(公告)号：EP4435349A1

    公开(公告)日：2024-09-25

    申请号：EP22915576.7

    申请日：2022-11-18

    申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

    发明人： KURACHI, Masaya ,  NAKAMOTO, Masahiko

    IPC分类号： F25B41/24 ,  F24F1/32 ,  F24F11/36 ,  F25B1/00 ,  F25B49/02

    CPC分类号： F25B49/02 ,  F25B1/00 ,  F24F11/36 ,  F25B41/24 ,  F24F1/32 ,  F25B41/40

    摘要： The present invention provides a shut-off unit that, with simple control and a simple configuration, reduces pressure loss of a coolant caused by a shut-off valve, makes it possible to draw a vacuum in an indoor unit even in a state where there is no power supply yet at the installment site and the shut-off valve cannot be opened, and is capable of releasing the coolant to the outdoor unit. The present invention comprises: shut-off liquid coolant piping (Ps1) through which a liquid coolant flows; shut-off gas coolant piping (Ps2) through which a gas coolant flows; a liquid shut-off valve (131) which is provided to the shut-off liquid coolant piping (Ps1); a gas shut-off valve (132) which is provided to the shut-off gas coolant piping (Ps2); gas bypass piping (Ps4); and a gas check valve (134) which is provided to the gas bypass piping (Ps4), wherein the gas check valve (134) prevents the flow of coolant from an outdoor unit (110) to an indoor unit (120) and allows the flow of coolant from the indoor unit (120) to the outdoor unit (110).

    HEAT MEDIUM CIRCULATION SYSTEM
    10.
    发明公开
    HEAT MEDIUM CIRCULATION SYSTEM 审中-实审

    公开(公告)号：EP4417898A1

    公开(公告)日：2024-08-21

    申请号：EP22880685.7

    申请日：2022-09-09

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

    发明人： MORIWAKI, Shunji ,  YAMAOKA, Yuki ,  IMAGAWA, Tsuneko ,  AOYAMA, Shigeo ,  MACHIDA, Kazuhiko ,  YOSHIDA, Jun ,  BANDO, Yasuaki ,  NAKATANI, Kazuhito

    IPC分类号： F25B1/00 ,  F25B47/02 ,  F25B49/02

    CPC分类号： F25B49/02 ,  F25B1/00 ,  F25B47/02

    摘要： A heat medium circulation system 100 comprises: a refrigerant circuit 110 in which a compressor 111, a use-side heat exchanger 112, an expander 113, and a heat source-side heat exchanger 114 are connected annularly and a flammable refrigerant is used; an air blower 117 for flowing air to the heat source-side heat exchanger 114; a casing 140 accommodating at least the refrigerant circuit 110 and the air blower 117; an electric heating device 143 provided on the bottom plate 141 of the casing 140; and a control device 130. The control device 130 simultaneously starts operation of the air blower 117 and energization of the electric heating device 143, and controls power consumption of the electric heating device 143 to be lower than power consumption in a stable state for a predetermined time from the start of energization of the electric heating device 143, thereby safely operating the electric heating device 143 which suppresses freezing of drain water and providing the heat medium circulation system 100 with further improved safety.