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公开(公告)号：US20240328658A1
公开(公告)日：2024-10-03
申请号：US18739726
申请日：2024-06-11
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tsunahiro ODO , Takashi TAKAHASHI , Shota TSURUZONO , Takuya HANADA , Naotoshi FUJITA , Yoshiki YAMANOI , Yuta IYOSHI , Kumiko SAEKI , Takeru MIYAZAKI , Nobuki MATSUI , Toshiyuki MAEDA , Tetsuya OKAMOTO
IPC: F24F11/64 , F24F11/00 , F24F11/46 , F24F11/77 , F24F11/86 , F24F110/10 , F24F110/20 , F24F140/50 , F24F140/60
CPC classification number: F24F11/64 , F24F11/0008 , F24F11/46 , F24F11/77 , F24F11/86 , F24F2110/10 , F24F2110/20 , F24F2140/50 , F24F2140/60 , F24F2203/021
Abstract: The air-conditioning system according to an embodiment is provided with a ventilation device, an air-conditioner, a processor, and a memory storing one or more programs, which when executed, cause the processor to control the ventilation device and the air-conditioner. The processor stores a first capability indicating a heat load that can be output corresponding to the power consumption of the ventilation device and a second capability indicating a heat load that can be output corresponding to the power consumption of the air conditioner, acquires the temperature of an indoor space, and sets the ventilation device and the air conditioner to share the first heat load that needs to be adjusted in the indoor space calculated based on the temperature of the indoor space according to the first capability and the second capability.
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公开(公告)号：US20230324085A1
公开(公告)日：2023-10-12
申请号：US18204024
申请日：2023-05-31
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuta IYOSHI , Yoshiki YAMANOI , Kumiko SAEKI
Abstract: A primary refrigerant circuit allows circulation of a primary refrigerant, the primary refrigerant circuit including a primary compressor, a cascade heat exchanger, a primary receiver, and a primary heat exchanger. A secondary refrigerant circuit allows circulation of a secondary refrigerant, the secondary refrigerant circuit including a secondary compressor, the cascade heat exchanger, and a utilization heat exchanger; a primary casing accommodating the primary compressor; and a heat source casing accommodating the secondary compressor. The receiver is provided outside the primary casing.
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公开(公告)号：US20240328648A1
公开(公告)日：2024-10-03
申请号：US18742652
申请日：2024-06-13
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takeru MIYAZAKI , Yoshiki YAMANOI , Yuta IYOSHI , Kumiko SAEKI , Masashi SAITO
CPC classification number: F24F11/0001 , F24F7/00 , F24F11/32
Abstract: A ventilation system includes a refrigerant circuit, supply and exhaust fans, and a control unit. The refrigerant circuit has a compressor and first and second heat exchangers connected by a refrigerant pipe with a refrigerant flowing in the refrigerant circuit. The supply fan is arranged to supply air from an outdoor space to an indoor space through the first heat exchanger. The exhaust fan is arranged to exhaust air in the indoor space to the outdoor space through the second heat exchanger. The control unit determines whether the supply fan and the exhaust fan are normal. The control unit, upon determining that one of the supply fan or the exhaust fan is abnormal, stops the one of the supply fan or the exhaust fan determined to be abnormal, and continues an operation of an other one of the supply fan or the exhaust fan determined to be normal.
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公开(公告)号：US20230304709A1
公开(公告)日：2023-09-28
申请号：US18203834
申请日：2023-05-31
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuta IYOSHI , Yoshiki YAMANOI , Kumiko SAEKI
Abstract: A primary refrigerant circuit allows circulation of a primary refrigerant and includes a primary compressor, a cascade heat exchanger, a primary heat exchanger, and a primary switching mechanism. A secondary refrigerant circuit allows circulation of a secondary refrigerant and includes a secondary compressor, the cascade heat exchanger, and a utilization heat exchanger; and an indoor fan configured to supply air to exchange heat with the secondary refrigerant flowing in the utilization heat exchanger When a defrosting condition is satisfied during normal operation, the primary refrigerant circulates in the order of the primary compressor, the primary heat exchanger, and the cascade heat exchanger after the indoor fan is stopped and the secondary compressor is operated.
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公开(公告)号：US20220390159A1
公开(公告)日：2022-12-08
申请号：US17891962
申请日：2022-08-19
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuuta IYOSHI , Yoshiki YAMANOI , Kumiko SAEKI
Abstract: An air-conditioning management system includes: an air conditioning apparatus configured to carry out a refrigerant recovery operation of recovering a refrigerant from a refrigerant circuit that connects an outdoor unit and an indoor unit and sending the recovered refrigerant to each recovery unit of the outdoor unit; and a control unit configured to make a determination whether all the recovered refrigerant is sendable to each recovery unit before a start of the refrigerant recovery operation by the air conditioning apparatus, and to output, when determining that all the recovered refrigerant is not sendable to each recovery unit, a command for notifying the determination.
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Patent Agency Ranking
公开(公告)号：US20240263845A1
公开(公告)日：2024-08-08
申请号：US18621484
申请日：2024-03-29
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Kumiko SAEKI , Yuta IYOSHI , Yoshiki YAMANOI
Abstract: A cascade unit is a cascade unit of a refrigeration system including a first circuit, a second circuit, and a cascade heat exchanger. The first circuit includes a first connecting portion that connects a first pipe and a second pipe extending from the cascade heat exchanger, of the first pipe and the second pipe connecting a first heat exchanger and the cascade heat exchanger), to the first pipe and the second pipe extending from the first heat exchanger inside or outside a cascade casing. The second circuit includes a second connecting portion that connects a liquid pipe and gas pipes extending from the cascade heat exchanger, among the liquid pipe and the gas pipes connecting second heat exchangers and the cascade heat exchanger, to the liquid pipe and the gas pipes extending from the second heat exchangers inside or outside the cascade casing.
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公开(公告)号：US20240240843A1
公开(公告)日：2024-07-18
申请号：US18622036
申请日：2024-03-29
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Kumiko SAEKI , Yuta IYOSHI , Yoshiki YAMANOI
IPC: F25B41/40
CPC classification number: F25B41/40
Abstract: Provided are a refrigerant vessel and a refrigeration cycle apparatus capable of suppressing accumulation of a refrigerating machine oil inside. A secondary-side receiver reserves a refrigerant in a secondary-side refrigerant circuit in which a refrigerant and a refrigerating machine oil circulate, the secondary-side receiver including a vessel body, a first refrigerant pipe connected to the vessel body, and a second refrigerant pipe connected to the vessel body, in which the refrigerating machine oil is incompatible with the refrigerant and has a higher density than the refrigerant, and the second refrigerant pipe extends downward from a bottom part of the vessel body.
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公开(公告)号：US20230304711A1
公开(公告)日：2023-09-28
申请号：US18204002
申请日：2023-05-31
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuta IYOSHI , Yoshiki YAMANOI , Kumiko SAEKI
CPC classification number: F25B47/025 , F25B13/00 , F25B9/008 , F25B9/10 , F25B2313/0233 , F25B2313/007
Abstract: A primary refrigerant circuit allows circulation of a primary refrigerant and includes a primary compressor, a cascade heat exchanger, a primary heat exchanger, and a primary switching mechanism. A secondary refrigerant circuit allows circulation of a secondary refrigerant and includes a secondary compressor, the cascade heat exchanger, a utilization heat exchanger, and a secondary switching mechanism. The secondary refrigerant circuit includes a bypass flow path connecting a portion between the utilization heat exchanger and the cascade heat exchanger and a suction flow path of the secondary compressor, and a bypass expansion valve provided on the bypass flow path. Executed is defrosting operation of circulating the primary refrigerant in the order of the primary compressor, the primary heat exchanger, and the cascade heat exchanger, and circulating the second refrigerant in the order of the secondary compressor, the cascade heat exchanger, and the bypass flow path.
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公开(公告)号：US20230057478A1
公开(公告)日：2023-02-23
申请号：US17982148
申请日：2022-11-07
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuuta IYOSHI , Yoshiki YAMANOI , Kumiko SAEKI
Abstract: A refrigeration cycle apparatus includes a primary-side refrigerant circuit in which a first refrigerant circulates and a secondary-side refrigerant circuit in which a second refrigerant circulates. The primary-side refrigerant circuit includes a primary-side compressor, a primary-side flow path of a cascade heat exchanger, a primary-side heat exchanger, and a primary-side switching mechanism. The secondary-side refrigerant circuit includes a secondary-side compressor, a secondary-side flow path of the cascade heat exchanger, a secondary-side switching mechanism, a suction flow path, a plurality of utilization-side heat exchangers, a first connection flow path, connecting the plurality of utilization-side heat exchangers and the secondary-side switching mechanism, including a secondary-side first connection pipe, a first heat source pipe, first branch pipes, junction pipes, first connection pipes, and first utilization pipes, a second connection flow path, connecting the plurality of utilization-side heat exchangers and the suction flow path, including a secondary side second connection pipe, a second heat source pipe, second branch pipes, the junction pipes, the first connection pipes, and the first utilization pipes, a third connection flow path, connecting the plurality of utilization-side heat exchangers and the secondary-side flow path of the cascade heat exchanger, including a secondary-side third connection pipe, a fourth heat source pipe, a fifth heat source pipe, third branch pipes, second connection pipes, and second utilization pipes.
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公开(公告)号：US20250044003A1
公开(公告)日：2025-02-06
申请号：US18720232
申请日：2022-12-08
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Shota TSURUZONO , Takashi TAKAHASHI , Tsunahiro ODO , Nobuki MATSUI , Yoshiki YAMANOI , Naotoshi FUJITA , Takuya HANADA , Yuta IYOSHI , Kumiko SAEKI , Takeru MIYAZAKI , Toshiyuki MAEDA , Tetsuya OKAMOTO
Abstract: A ventilation apparatus includes a compressor; a first heat exchanger configured to function as a condenser or an evaporator; a first air flow path configured to supply air taken in from outdoors to an indoor space after passing through the first heat exchanger; a second heat exchanger configured to function as a condenser or an evaporator; a second air flow path configured to exhaust air taken in from the indoor space to the outdoors after passing through the second heat exchanger; a refrigerant circuit through which a refrigerant flows, the refrigerant circuit being connected to the compressor, the first heat exchanger, and the second heat exchanger by a refrigerant pipe; and a control unit configured to guide a flow of air in the indoor space to the second heat exchanger when the second heat exchanger is determined to be in a frosted state, to increase a temperature of the second heat exchanger, and configured to output a predetermined instruction to an actuator configured to control a state of the refrigerant in the refrigerant circuit to increase a temperature of the refrigerant flowing into the second heat exchanger.
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