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.

公开(公告)号：US20230332801A1

公开(公告)日：2023-10-19

申请号：US18214849

申请日：2023-06-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hideho SAKAGUCHI ,  Tetsuya OKAMOTO ,  Masanori UKIBUNE

IPC: F24H15/172 ,  F24H1/18

CPC classification number: F24H1/18 ,  F24H15/172

Abstract: A hot water supply system includes a hot water supply apparatus, a plurality of supply paths, and an estimation unit. The hot water supply apparatus includes a heating apparatus configured to heat water, a tank configured to store the water heated by the heating apparatus, and a water circuit configured to circulate the water in the tank. Each supply path is coupled to a corresponding one of a plurality of hot water supply targets and is configured to supply the water from the tank. The estimation unit is configured to predict a total amount of hot water supply demand, based on time-series data of a first index that indicates an amount of heat of water used in each of the plurality of hot water supply targets.

公开(公告)号：US20230020042A1

公开(公告)日：2023-01-19

申请号：US17956931

申请日：2022-09-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Masao OHNO ,  Tetsuya OKAMOTO ,  Kazushi HISAYAMA ,  Kebi CHEN ,  Yoshinobu TSUMURA ,  Masanori UKIBUNE

IPC: F25B7/00

Abstract: A first intermediate plate and a second intermediate plate are supported by a bottom member through a plurality of second elastic members. The first compressor and the second compressor are supported by the first intermediate plate and the second intermediate plate, respectively, through a plurality of first elastic members.

公开(公告)号：US20220011020A1

公开(公告)日：2022-01-13

申请号：US17484858

申请日：2021-09-24

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazushi HISAYAMA ,  Kebi CHEN ,  Tetsuya OKAMOTO

IPC: F25B1/10 ,  F25B49/02

Abstract: A refrigerant circuit includes a first compressor, a second compressor, a heat-source-side heat exchanger, an expansion mechanism, and a use-side heat exchanger. The refrigerant circuit is capable of performing a single-stage compression operation in which one of the first compressor and the second compressor is driven and the other is stopped, and a two-stage compression operation in which both the first compressor and the second compressor are driven. The control unit controls the refrigerant circuit so that, of the single-stage compression operation and the two-stage compression operation, an operation with a higher compression efficiency is performed.

公开(公告)号：US20210148611A1

公开(公告)日：2021-05-20

申请号：US16492730

申请日：2018-03-23

Applicant: Daikin Industries, LTD.

Inventor： Eiji KUMAKURA ,  Tetsuya OKAMOTO

IPC: F25B13/00 ,  F25B49/02

Abstract: An air conditioner (1, 101) has a refrigerant circuit (10, 110) which is formed by connecting an outdoor unit (2, 102) and an indoor unit (3). The refrigerant circuit (10, 110) has a refrigerant sealed therein. The refrigerant contains a hydrofluorocarbon having a property of undergoing a disproportionation reaction. The refrigerant circuit (10, 110) includes a refrigerant shutoff mechanism (24, 41, 43, 46, 47, 48) that shuts off a flow of the refrigerant from the outdoor unit (2, 102) side to the indoor unit (3) side when the refrigerant in a portion of the refrigerant circuit (10, 110) within the outdoor unit (2, 102) meets a predetermined condition.

公开(公告)号：US20200072518A1

公开(公告)日：2020-03-05

申请号：US16492753

申请日：2018-03-23

Applicant: Daikin Industries, LTD.

Inventor： Eiji KUMAKURA ,  Ikuhiro IWATA ,  Tetsuya OKAMOTO

IPC: F25B49/02 ,  F25B13/00

Abstract: A control unit (19) that controls the operation of a refrigerant circuit (10) executes pump down operation in which a non-azeotropic refrigerant mixture is collected into a portion of the refrigerant circuit (10) within an outdoor unit (2), executes compositional ratio determination in which the compositional ratio of the non-azeotropic refrigerant mixture is determined based on the pressure and temperature of the non-azeotropic refrigerant mixture collected into the outdoor unit (2) by the pump down operation, and generates an alert when the compositional ratio of the non-azeotropic refrigerant mixture determined by the compositional ratio determination is outside an acceptable proportion range of a hydrofluorocarbon having the property of undergoing a disproportionation reaction.

公开(公告)号：US20240167744A1

公开(公告)日：2024-05-23

申请号：US18425501

申请日：2024-01-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadafumi NISHIMURA ,  Tetsuya OKAMOTO ,  Manabu YOSHIMI ,  Hiroshi DOUMAE ,  Takuya HANADA

IPC: F25B49/00

CPC classification number: F25B49/005 ,  F25B2500/222

Abstract: A fluid leakage detection system includes a detection device, a communication device, and a power supply unit. The detection device includes a detector that detects a leakage of a fluid from a flow path. The communication device includes a communicator to transmit and receive, to and from the detection device, predetermined information as to whether there is a leakage of the fluid. The power supply unit supplies power to the detection device in a wireless manner.

公开(公告)号：US20240085052A1

公开(公告)日：2024-03-14

申请号：US18518030

申请日：2023-11-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadafumi NISHIMURA ,  Hiroshi DOUMAE ,  Tetsuya OKAMOTO ,  Takuya HANADA

IPC: F24F11/88 ,  F24F11/56 ,  F24F11/70 ,  H02J50/60

CPC classification number: F24F11/88 ,  F24F11/56 ,  F24F11/70 ,  H02J50/60 ,  F24F2120/10

Abstract: An air conditioning unit includes an indoor air conditioner, a power supply line, and a wireless power feeder. The indoor air conditioner conditions air in a target space. The power supply line supplies power to the indoor air conditioner. The wireless power feeder feeds power to a predetermined device disposed in the target space. The wireless power feeder acquires power from the power supply line.

公开(公告)号：US20230014957A1

公开(公告)日：2023-01-19

申请号：US17956605

申请日：2022-09-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazushi HISAYAMA ,  Masanori UKIBUNE ,  Tetsuya OKAMOTO ,  Masao OHNO ,  Kebi CHEN

IPC: F25B49/02 ,  F25B13/00

Abstract: A refrigeration apparatus includes a refrigerant circuit switchable between a first operation of performing a refrigeration cycle in which a first compressor is stopped and a second compressor is driven and a second operation of performing a refrigeration cycle in which the first and second compressors and are driven. The refrigeration apparatus further includes a reduction mechanism configured to reduce a refrigerant flowing into the first compressor while a first condition is satisfied during the first operation. The first condition indicates that an internal pressure of the first compressor is lower than an evaporation pressure of an evaporator.

公开(公告)号：US20210018188A1

公开(公告)日：2021-01-21

申请号：US17043020

申请日：2019-03-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kazushi HISAYAMA ,  Tetsuya OKAMOTO ,  Yoshinobu TSUMURA ,  Kebi CHEN ,  Masanori UKIBUNE

IPC: F24F1/12

Abstract: A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.