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    REFRIGERATION CYCLE DEVICE
    5.
    发明公开
    REFRIGERATION CYCLE DEVICE 审中-实审

    公开(公告)号：EP4411290A1

    公开(公告)日：2024-08-07

    申请号：EP22876056.7

    申请日：2022-09-22

    申请人： DAIKIN INDUSTRIES, LTD.

    发明人： SAEKI, Kumiko ,  IYOSHI, Yuta ,  YAMANOI, Yoshiki

    IPC分类号： F25B49/02 ,  F25B1/00 ,  F25B41/20 ,  F25B43/00

    CPC分类号： F25B49/02 ,  F25B1/00 ,  F25B43/00 ,  F25B41/20

    摘要： Provided is a refrigeration cycle apparatus capable of enhancing reliability of a connection point of a safety valve. The present disclosure includes a safety valve (91, 92) including a secondary-side refrigerant circuit (10) that includes a secondary-side receiver (45) that reserves a refrigerant, a flow path switching portion (96) that includes a first connecting portion (97a), a second connecting portion (98a), and a third connecting portion (99a) connected to the secondary-side receiver (45), the flow path switching portion (96) that switches between a first state in which the third connecting portion (99a) communicates with the first connecting portion (97a) and a second state in which the third connecting portion (99a) communicates with the second connecting portion (98a), and a safety valve (91, 92) that includes a safety valve connecting portion (91a, 92a) connected to the first connecting portion (97a) or the second connecting portion (98a), and releases the refrigerant to outside when a refrigerant pressure in the secondary-side receiver (45) satisfies a predetermined condition, in which at least the safety valve connecting portion (91a, 92a) is made of stainless steel, and in the flow path switching portion (96), a potential difference between the first connecting portion (97a) and the safety valve connecting portion (91a) is 0.35 V or less, a potential difference between the second connecting portion (98a) and the safety valve connecting portion (92a) is 0.35 V or less, an allowable tensile stress of the safety valve connecting portion (91a) with respect to an allowable tensile stress of the first connecting portion (97a) is 3.0 times or less, and an allowable tensile stress of the safety valve connecting portion (92a) with respect to an allowable tensile stress of the second connecting portion (98a) is 3.0 times or less.

    REVERSING VALVE AND HEAT EXCHANGE SYSTEM HAVING SAME
    9.
    发明公开
    REVERSING VALVE AND HEAT EXCHANGE SYSTEM HAVING SAME 审中-实审

    公开(公告)号：EP4394224A1

    公开(公告)日：2024-07-03

    申请号：EP22872223.7

    申请日：2022-09-26

    申请人： Zhejiang Dunan Artificial Environment Co., Ltd.

    发明人： ZHANG, Wenrong ,  LI, Zhepeng ,  JIN, Ju ,  LI, Zeen

    IPC分类号： F16K11/22 ,  F16K27/02 ,  F16K31/06 ,  F25B41/20

    CPC分类号： F16K31/06 ,  F16K11/22 ,  F16K27/02 ,  F25B41/20

    摘要： This application provides a reversing valve and a heat exchange system with reversing valve. The reversing valve includes: a valve seat having a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel, where the first flow channel has an inlet, and the second flow channel has an outlet; a first valve body controlling communication between the first flow channel and the third flow channel; a second valve body controlling communication between the first flow channel and the fourth flow channel; a third valve body controlling communication between the third flow channel and the second flow channel; and a fourth valve body controlling communication between the fourth flow channel and the second flow channel. When the reversing valve is in a first operation state, the second valve body controls the first flow channel to communicate with the fourth flow channel, allowing a refrigerant to flow out of the fourth flow channel, and the third valve body controls the third flow channel to communicate with the second flow channel, allowing the refrigerant to flow back into the third flow channel and be discharged. When the reversing valve is in a second operation state, the first valve body controls the first flow channel to communicate with the third flow channel, allowing the refrigerant to flow out of the third flow channel, and the fourth valve body controls the fourth flow channel to communicate with the second flow channel, allowing the refrigerant to flow back into the fourth flow channel and be discharged. This application resolves the problem that the refrigerant is likely to leak in four-way valves in the prior art.