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    REFRIGERATION DEVICE
    1.
    发明公开
    REFRIGERATION DEVICE 审中-公开

    公开(公告)号：EP4513110A1

    公开(公告)日：2025-02-26

    申请号：EP24790249.7

    申请日：2024-06-05

    Applicant: Daikin Industries, Ltd.

    Inventor： MATSUDA, Hiroaki ,  YAMANOI, Yoshiki ,  IYOSHI, Yuta ,  AZUMA, Shota ,  YAMADA, Koju

    IPC: F25B7/00 ,  F25B1/00 ,  F25B39/04 ,  F28F1/02

    Abstract: A refrigeration apparatus (10) includes: a first refrigerant circuit (21) including a first heat exchanger (26) configured to release heat from carbon dioxide serving as a first refrigerant; a second refrigerant circuit (22) including a second heat exchanger (36) configured to release heat from a second refrigerant having combustibility or toxicity or a second refrigerant having a global warming potential equal to four or more, and a decompressor (38) configured to decompress the second refrigerant; and a third heat exchanger (27) configured to cause heat exchange between the first refrigerant having radiated heat in the first heat exchanger (26) and the second refrigerant having radiated heat in the second heat exchanger (36) and then decompressed in the decompressor (38); in which the second heat exchanger (36) includes a plurality of flat multi-hole tubes (36b).

    AIR-CONDITIONING UNIT AND PACKAGING UNIT
    4.
    发明公开
    AIR-CONDITIONING UNIT AND PACKAGING UNIT 审中-公开

    公开(公告)号：EP4502495A1

    公开(公告)日：2025-02-05

    申请号：EP23779417.7

    申请日：2023-03-09

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： UCHIDA, Kengo ,  KUMAKURA, Eiji

    IPC: F25B1/00 ,  B65D85/68 ,  F25B45/00

    Abstract: To provide an air conditioning unit and a packaging unit that can be safely stored while suppressing mixing of unnecessary substances. In an outdoor unit (20), a refrigerant having flammability is enclosed. An enclosure amount of the refrigerant having the flammability is equal to or more than an amount of the refrigerant that becomes an atmospheric pressure at an ambient temperature of -40°C and less than an amount of the refrigerant that becomes 0.2 MPa at an ambient temperature of 20°C.

    AIR CONDITIONING SYSTEM, AIR CONDITIONING APPARATUS, AND CONTROL METHOD
    5.
    发明公开
    AIR CONDITIONING SYSTEM, AIR CONDITIONING APPARATUS, AND CONTROL METHOD 审中-公开

    公开(公告)号：EP4502485A1

    公开(公告)日：2025-02-05

    申请号：EP23774484.2

    申请日：2023-03-06

    Applicant: Fujitsu General Limited

    Inventor： TANNO, Tetsunori

    IPC: F24F11/86 ,  F24F11/46 ,  F24F11/56 ,  F24F11/64 ,  F25B1/00 ,  F24F110/10 ,  F24F110/12 ,  F24F140/00

    Abstract: An air conditioning system includes an outdoor unit that includes a compressor; multiple indoor units that are connected to the outdoor unit through a refrigerant pipe; a control device that controls the outdoor unit and the indoor units; and a server device that is capable of communicating with the control device. The server device includes a first predicting unit that predicts room temperature of an air-conditioned space in which the indoor units are installed, by using a plurality of operation state amounts relating to air conditioning operation; and a second predicting unit that predicts a point of time when each indoor unit out of the indoor units is switched to thermo-ON and a point of time when it is switched to thermo-OFF, by using the room temperature predicted by the first predicting unit and set temperature that is a target temperature of the air conditioning operation. The control device includes a control unit that controls driving of the compressor according to the point of time when each of the indoor unit is switched to the thermo-ON or the thermo-OFF, by using a prediction result of the second predicting unit. The air conditioning system and the like that are capable of ensuring user comfort while suppressing power consumption associated with air conditioning operation by reducing the number of times of stopping and restarting of the compressor are provided.

    REFRIGERATION CYCLE DEVICE
    8.
    发明公开
    REFRIGERATION CYCLE DEVICE 审中-公开

    公开(公告)号：EP4484853A1

    公开(公告)日：2025-01-01

    申请号：EP23759924.6

    申请日：2023-02-20

    Applicant: DAIKIN INDUSTRIES, LTD.

    Inventor： KAWAE, Arisa ,  MATSUURA, Hideki ,  TANAKA, Masaru ,  TERAI, Haruka

    IPC: F25B1/00 ,  C09K5/04 ,  C10M107/34 ,  C10N40/30

    Abstract: Hydrocarbon-type refrigerants tend to dissolve in refrigerating machine oils, which may result in a decrease in the viscosity of the refrigerating machine oils and cause excessive wear of the sliding portions inside the compressors. An air conditioning apparatus (1) includes a refrigerant circuit (10) in which a compressor (11), an outdoor heat exchanger (13), an expansion valve (9), and an indoor heat exchanger (18) are sequentially connected and a refrigerant is circulated. The compressor (11) includes a sliding portion including a first bearing metal (26) or an Oldham ring (25). At least one of two members slidable with each other in the sliding portion is formed of aluminum or aluminum alloy. The refrigerant circulating through the refrigerant circuit (10) is a hydrocarbon-type refrigerant. A refrigerating machine oil used in the compressor (11) has a refrigerant solubility of 30% or less at a pressure of 1.9 MPa and at a temperature of 60°C.

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