公开(公告)号：US20250060119A1

公开(公告)日：2025-02-20

申请号：US18937991

申请日：2024-11-05

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kousuke TSUBOI ,  Takao SONODA ,  Makoto IKEDA ,  Tetsushi TSUDA ,  Yu OTA ,  Yuuichi KITA ,  Kenji AMANO ,  Atsushi MATSUBARA ,  Tomomi KUKITA ,  Naoko KURIYAMA ,  Tomoyoshi ASHIKAGA ,  Gen KUMAMOTO

IPC: F24F11/58 ,  F24F11/63 ,  F24F13/20 ,  F24F130/40 ,  G05B19/02

Abstract: The air conditioner includes an indoor unit including a main body having formed therein a blow-out port and a microphone element that accepts a voice instruction. The blow-out port is formed to extend with a longitudinal direction thereof corresponding to a second direction. The indoor unit includes a fan and an inverter fan motor that drives the fan. The fan is accommodated in the main body and a rotational axis of the fan extends in the second direction, and the fan motor is disposed on one side of an inside of the main body in the second direction and is disposed on one side of the fan in the second direction. The voice capturing portion is disposed on an opposite side of the main body as the side on which the fan motor is disposed in the second direction.

公开(公告)号：US20250059423A1

公开(公告)日：2025-02-20

申请号：US18884781

申请日：2024-09-13

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Mitsushi ITANO ,  Kenji GOBOU ,  Tsubasa NAKAUE

IPC: C09K5/04

Abstract: An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To achieve the object, provided is a composition comprising a refrigerant, the refrigerant comprising 2,3,3,3-tetrafluoro-1-propene(R1234yf) and/or 1,3,3,3-tetrafluoropropene (R1234ze), trans-1,2-difluoroethylene (HFO-1132(E)), and CO2, wherein the content of HFO-1132(E) is 30 mass % or less, and the content of CO2 is 10 mass % or less based on the entire refrigerant.

公开(公告)号：US20250059304A1

公开(公告)日：2025-02-20

申请号：US18926389

申请日：2024-10-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Masanori KITAICHI ,  Tatsuya Morikawa ,  Takuma Iwasaka ,  Yuto Kurasaki ,  Eisaku Sumino ,  Ryo Takishima ,  Tomohito Inoue ,  Taketo Kato ,  Kenji Ichikawa ,  Kengo Ito ,  Chiaki Okui ,  Masaki Irie ,  Taku Yamanaka

IPC: C08F2/26 ,  C08F6/22 ,  C08F14/26

Abstract: There is provided a method for producing a fluoropolymer, the method including polymerizing a fluoromonomer in an aqueous medium to obtain a polymerization dispersion containing the fluoropolymer, and bringing the fluoropolymer in the polymerization dispersion into contact with an alcohol having 3 to 5 carbon atoms to coagulate the fluoropolymer to thereby obtain the fluoropolymer.

公开(公告)号：US12228320B2

公开(公告)日：2025-02-18

申请号：US17736608

申请日：2022-05-04

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Junya Minami

IPC: F25B49/02 ,  F25B41/42

Abstract: An air conditioning apparatus with a refrigerant circuit includes a connecting portion to which a first electric wire and a second electric wire are connected. The first and second electric wires are connected to corresponding first and second devices of a plurality of safety devices. The plurality of safety devices includes at least two types of a refrigerant detector, an alarm device, an isolation valve, and a ventilation device. A circuit configuration portion forms an interlock circuit with the first electric wire and the second electric wire connected to the connecting portion. A first member enables formation of a first circuit including at least part of the circuit configuration portion and not including both the first electric wire and the second electric wire. A controller prohibits an operation of the air conditioning apparatus when no current flows through either the interlock circuit or the first circuit.

公开(公告)号：US12228135B2

公开(公告)日：2025-02-18

申请号：US18811163

申请日：2024-08-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Arisa Kawae ,  Hideki Matsuura ,  Masaru Tanaka ,  Haruka Terai

IPC: F04C29/02 ,  C10M171/00 ,  F16C33/10 ,  F16C33/12 ,  F25B9/00 ,  F25B31/02 ,  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 includes a refrigerant circuit in which a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are sequentially connected and a refrigerant is circulated. The compressor includes a sliding portion including a first bearing metal or an Oldham ring. 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 is a hydrocarbon-type refrigerant. A refrigerating machine oil used in the compressor has a refrigerant solubility of 30% or less at a pressure of 1.9 MPa and at a temperature of 60° C.

公开(公告)号：US12221967B2

公开(公告)日：2025-02-11

申请号：US18601307

申请日：2024-03-11

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Midori Drake

IPC: F04D17/10 ,  F04D25/02 ,  F04D29/063 ,  F04D29/28 ,  F04D29/42 ,  F04D29/44 ,  F04D29/58 ,  F04D29/66 ,  F25B31/02

Abstract: A centrifugal compressor for a chiller includes an inlet guide vane; an impeller, a diffuser, a volute forming member, a compressor housing, and an insert. The volute forming member is disposed downstream of the diffuser. The volute forming member forms a volute to receive a refrigerant after the refrigerant has been compressed. The volute has a reverse overhung configuration. The compressor housing encloses the impeller. The insert is disposed around an outer periphery of the impeller and interposed between the volute forming member and the compressor housing. The insert includes a diffuser defining wall surface that opposes an inner surface of the volute forming member. The diffuser is defined between the volute forming member and the diffuser defining wall surface.

公开(公告)号：US20250044035A1

公开(公告)日：2025-02-06

申请号：US18922465

申请日：2024-10-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Mitsuharu NUMATA ,  Daichi UTSUMI ,  Ken SATO ,  Yutaka SHIBATA ,  Masafumi UDA

IPC: F28D9/00 ,  F25B39/02

Abstract: A heat exchanger is provided in a refrigeration apparatus (R) configured to be capable of performing a refrigeration cycle where an evaporation pressure of a refrigerant is lower than an atmospheric pressure. The heat exchanger functions as an evaporator. The heat exchanger includes a shell (20) forming an internal space (21). The heat exchanger includes a plate stack (40) arranged in the internal space (21) and including a plurality of heat transfer plates (50a, 50b).

公开(公告)号：US20250043784A1

公开(公告)日：2025-02-06

申请号：US18926363

申请日：2024-10-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takazo SOTOJIMA ,  Tatsuya KATAYAMA ,  Hiromichi UENO ,  Arisa KIRA

IPC: F04C18/38 ,  F25B31/02

Abstract: A cylinder end plate of a rotary compressor has a discharge port communicating with a discharge-side space, and the discharge port is formed such that as viewed in the axial direction of a drive shaft, part of an opening of the discharge port overlaps with the inside of a cylinder chamber, and the opening end face of the discharge port is inclined radially outward of the cylinder end plate.

公开(公告)号：US20250043042A1

公开(公告)日：2025-02-06

申请号：US18926639

申请日：2024-10-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kengo ITO ,  Chiaki Okui ,  Kenji Ichikawa ,  Taketo Kato

IPC: C08F14/26

Abstract: Provided is a method for producing a composition containing a fluororesin, the method comprising polymerizing tetrafluoroethylene in an aqueous medium in the presence of a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I) to obtain a polymerization dispersion containing a fluororesin containing a tetrafluoroethylene unit, coagulating the fluororesin in the polymerization dispersion to obtain a coagulate, and washing the coagulate to obtain a composition containing the fluororesin, wherein (1) the coagulation is carried out by bringing the fluororesin in the polymerization dispersion into contact with an organic solvent, and/or (2) the washing is carried out by bringing the coagulate into contact with an organic solvent, CX1X3═CX2R(—CZ1Z2-A0)m  (I) wherein the definitions of the reference signs in the formula are as provided in the specification.

公开(公告)号：US12215902B2

公开(公告)日：2025-02-04

申请号：US17435914

申请日：2020-03-04

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Ryuuta Ohura ,  Takuya Kotani

IPC: F25B41/24 ,  F24F11/36 ,  F25B13/00 ,  F25B49/00 ,  F25B49/02

Abstract: A support system includes a display and a server. Upon acquiring first information on arrangement of a first refrigerant shut-off unit, second information on each of utilization-side units in a first utilization-side unit group, and third information on one of or both a length and an internal volume of the first connection pipe group, the server determines, based on an allowable leakage amount of the refrigerant into a space where a corresponding one or more utilization-side units is installed, whether the first, second, and third information are suitable for the design, and causes the display to display a result of the determination; or the server calculates a first refrigerant amount as a sum of an amount of the refrigerant in the first refrigerant circuit and an amount of the refrigerant, and causes the display to display the first refrigerant amount.