Patents Assigned to Daikin Industries, Ltd.
  • Patent number: 11662111
    Abstract: An air-conditioning system includes: an air conditioner including a refrigerant circuit formed by connecting an outdoor unit and a plurality of indoor units together, the air conditioner being configured to condition air in a plurality of indoor spaces; at least one countermeasure device provided in correspondence with at least one of the plurality of indoor spaces and configured to operate during leakage of a refrigerant; a plurality of detectors configured to detect a concentration of the refrigerant, at least one of the detectors being provided in each of the plurality of indoor spaces; and a control unit configured to operate all of the at least one countermeasure device if at least one of the concentrations of the refrigerant respectively detected by the plurality of detectors exceeds a predetermined value.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: May 30, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroki Sasayama, Shuuichi Suzuki
  • Patent number: 11664534
    Abstract: An electrolyte solution containing a compound represented by the following formula (1): wherein R101 and R102 are the same as or different from each other and are each a hydrogen atom, a fluorine atom, or an alkyl group optionally containing a fluorine atom; and R103 is an alkyl group or an organic group containing an unsaturated carbon-carbon bond. Also disclosed is an electrochemical device and lithium ion secondary battery including the electrolyte solution, and a module including the electrochemical device or lithium ion secondary battery.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: May 30, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hisako Nakamura, Takaya Yamada, Shigeaki Yamazaki, Yuuki Suzuki, Kenzou Takahashi, Akiyoshi Yamauchi, Kotaro Hayashi
  • Patent number: 11661540
    Abstract: A refrigeration apparatus pertaining to the invention can suppress clogging due to polymers formed by the polymerization of refrigerant and improve safety. The refrigeration apparatus is equipped with a refrigeration cycle in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected in a loop. The refrigeration apparatus is equipped with a polymer catcher. The polymer catcher is attached to piping interconnecting an outlet side of the compressor and an inlet side of the condenser and catches polymers of refrigerant circulating in the refrigeration cycle. The refrigerant includes a compound represented by a molecular formula having one or more carbon-carbon unsaturated bonds.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: May 30, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Masaru Tanaka, Shigeharu Taira, Tomoyuki Haikawa, Yoshiki Shimizu
  • Patent number: 11661939
    Abstract: A rotary compressor includes a casing including an oil reservoir configured to store lubricating oil inside, and a compression mechanism including a reciprocator and a support. The reciprocator defines a compression chamber and reciprocating along a first direction. The support has a support surface configured to support the reciprocator. The support surface includes a first groove and a second groove formed therein. The first groove extends along a second direction intersecting with the first direction and is configured to transfer the lubricating oil to the second groove. The second groove extends from a center of the first groove toward the compression chamber along the first direction.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: May 30, 2023
    Assignee: Daikin Industries, Ltd.
    Inventors: Yudai Iwai, Takuya Ishino, Masahide Higuchi
  • Publication number: 20230159810
    Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method of using a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the dimension of a gap of a predetermined portion through which the refrigerant flows around an ignition energy generation portion in the compressor is less than or equal to 2 mm.
    Type: Application
    Filed: January 11, 2023
    Publication date: May 25, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takashi USUI, Tomoyuki GOTOU, Takashi YOSHIMURA, Yuuko ITOU, Yuka WATANABE, Takuma IWASAKA, Youhei TAKAKURA, Yuuki YOTSUMOTO
  • Patent number: 11655330
    Abstract: An article including a metal substrate, a phosphate binding layer, and a fluoropolyether layer. Also disclosed is a process for producing the article which includes (i) treating a surface of the metal substrate with a phosphoric acid derivative to form the phosphate binding layer on the surface of the metal substrate, and (ii) treating a surface of the phosphate binding layer with a fluoropolyether compound having a fluoropolyether group and a carbon-carbon double bond to form the fluoropolyether layer on the surface of the phosphate binding layer.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: May 23, 2023
    Assignees: DAIKIN AMERICA, INC., DAIKIN INDUSTRIES, LTD.
    Inventors: Chad Aaron Meserole, Abundio Jimenez Sandoval
  • Patent number: 11655199
    Abstract: A halogenated alkene compound and a fluorinated alkyne compound are obtained at a high conversion rate and high selectivity by employing any of the following methods (1) to (4): (1) a halogenated butane compound represented by CX1X2X3CHX4CFHCX5X6X7, wherein X1, X2, X3, X4, X5, X6, and X7 are the same or different and each is a halogen atom, to a dehydrofluorination reaction; (2) a halogenated butene compound represented by CX1X2X3CX4?CHCX5X6X7, wherein X1, X2, X3, X4, X5, X6, and X7 are as defined above, to a dehydrohalogenation reaction; (3) a halogenated alkane compound represented by CHX8A1CHX9A2, wherein A1 and A2 are each a fluorine atom or a perfluoroalkyl group, and X8 and X9 are the same or different and each is a halogen atom, to a dehydrohalogenation reaction in the presence of a catalyst in a gas phase; and (4) a halogenated alkene compound represented by CX8A1=CHA2, wherein A1, A2, and X8 are as defined above, to a dehydrohalogenation reaction in the presence of a catalyst.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: May 23, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuusuke Etou, Shingo Nakamura
  • Patent number: 11655339
    Abstract: A method for producing a polybenzimidazole precursor polyamide including a repeating unit represented by the following formula (2): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula: two Xs are each individually a monovalent organic group; and R1 is a divalent organic group, the method including: a step (1-1) of polymerizing a tetramine compound (3) and a dicarboxylic acid derivative compound (4) as defined herein to provide the polybenzimidazole precursor polyamide.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: May 23, 2023
    Assignees: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION, IWATE UNIVERSITY
    Inventors: Yoshiyuki Oishi, Tsuyoshi Noguchi, Tadashi Kanbara
  • Publication number: 20230151256
    Abstract: The present disclosure provides a mixed refrigerant having four types of performance, i.e., an excellent coefficient of performance and refrigerating capacity that allow it to serve as an alternative refrigerant for R410A, a sufficiently low GWP, and non-flammability. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trifluoroiodomethane (CF3I) and difluoromethane (R32), wherein the contents of CF3I and R32 in the refrigerant are respectively 48 mass %?CF3I?46 mass % and 54 mass %?R32?52 mass %, based on the total amount of CF3I and R32 taken as 100 mass %.
    Type: Application
    Filed: November 21, 2022
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Kazuhiro TAKAHASHI, Hitomi KUROKI
  • Publication number: 20230151241
    Abstract: Provided is a coating material composition that does not use N-methyl-2-pyrrolidone and has the same performance as conventional ones. The coating material composition contains polytetrafluoroethylene, a polyamideimide resin, and a filler, and being substantially free of N-methyl-2-pyrrolidone, wherein the filler has a hardness of 7 to 12 on a new Mohs hardness scale and a primary particle size of 1 ?m or less, wherein the content of the filler is 10 to 30 parts by mass relative to 100 parts by mass of a solid content of the polyamideimide resin in the coating material components, wherein the coating material composition has a viscosity of 10,000 to 20,000 cps, and wherein a degree of dispersion of the coating material as measured according to JIS K5600 with a grind gauge is 5 ?m or less.
    Type: Application
    Filed: January 6, 2023
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroshi NISHIMURA, Yuu KADOWAKI, Yasukazu NAKATANI
  • Publication number: 20230150902
    Abstract: The present disclosure provides a method for producing purified trans-1,2-difluoroethylene (HFO-1132(E)) and/or 1,1,2-trifluoroethylene (HFO-1123), comprising a distillation step of distilling composition 1 comprising difluoromethane (HFC-32) and HFO-1132(E) and/or HFO-1123 to obtain composition 2 in which HFC-32 is reduced from composition 1; and an extractive distillation step of bringing composition 2 into contact with an extraction solvent to obtain a composition comprising HFO-1132(E) and/or HFO-1123, in which HFC-32 is reduced from composition 2, composition 2 being an azeotropic composition or azeotrope-like composition comprising HFC-32 and HFO-1132(E) and/or HFO-1123.
    Type: Application
    Filed: December 20, 2022
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Atsushi NOGUCHI, Tatsuya TAKAKUWA, Akikazu TABUCHI
  • Publication number: 20230151257
    Abstract: An object is to provide a novel low-GWP mixed refrigerant. Provided is a composition comprising a refrigerant, the refrigerant comprising difluoromethane (R32), trans-1,2-difluoroethylene (HFO-1132(E)), 1,3,3,3-tetrafluoropropene (R1234ze), and 1,1-difluoroethylene (HFO-1132a).
    Type: Application
    Filed: January 19, 2023
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Shun OHKUBO, Daisuke KARUBE, Satoshi TOKUNO
  • Publication number: 20230151999
    Abstract: A blow-out unit disposed at a blow-out port on an air flow path and configured to blow out air supplied through the air flow path, toward the room, includes: a first member disposed in the blow-out port and including a plate member having a first side and configured to turn around a rotating shaft disposed away from the first side such that the first side moves away from the blow-out port toward the air flow path; and a second member disposed in the blow-out port at a different position from the plate member and extending along the first side of the plate member. The plate member and the second member change a direction of air to be blown out toward the blow-out port through the air flow path from a first air flow direction to a second air flow direction.
    Type: Application
    Filed: January 20, 2023
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Akira Komatsu, Kentarou Niki, Shuuichi Tanaka, Tooru Fujimoto
  • Publication number: 20230152019
    Abstract: If a first condition that an intermediate pressure corresponding to a pressure of an intermediate flow path is greater than a predetermined value is satisfied in an operation in which first, second, and third compressors are operated, the control unit executes a first action of increasing the number of revolutions of the third compressor.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 18, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masaaki TAKEGAMI, Yoshikazu UEHARA, Akitoshi UENO
  • Patent number: 11647761
    Abstract: A space which is present between an air intake surface (90a) provided with an air intake port and an air filter (76) is regarded as a primary space (P) through which air flows into the air filter (76), and a plurality of spaces, each of which is present between one of other surfaces of the air filter (76) and a filter box (90), are regarded as secondary spaces (Q) into each of which the air flows out from the air filter (76), so that the air is taken out from side surfaces and an upper surface of a filter unit (75). This configuration reduces the increase in size of the filter unit (75) of a gas supply device (30) even if a dust holding capacity of the filter is made larger than before.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: May 16, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hirotaka Tagawa, Kazuyasu Matsui, Makoto Ikemiya
  • Patent number: 11649979
    Abstract: An air conditioning system includes: an outdoor unit of an air conditioner; an indoor unit of the air conditioner; and a remote controller that operates and monitors at least one of the outdoor unit or the indoor unit. The remote controller includes: a storage and a processor coupled to the storage. The processor of the remote controller: acquires operation data from at least one of the outdoor unit or the indoor unit; stores the operation data in the storage by overwriting pre-stored operation data already in the storage when a predetermined capacity of the storage is exceeded; saves, during a past predetermined period when an abnormal condition occurs at the air conditioner and in the storage, a copy of the operation data; and displays the copy of the operation data or sends the copy of the operation data externally.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: May 16, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Ryouji Inoue, Toshio Ii, Yasuaki Kobayashi, Tatsuya Higuchi, Masahiro Kaneko, Ryousuke Yamamoto, Youta Katou
  • Publication number: 20230145005
    Abstract: To achieve high density integration of components while securing an insulation distance between a bootstrap capacitor and an intelligent power module. In a printed wiring board, a region where a capacitor is mounted is located in a region where an intelligent power module is mounted. Therefore, the capacitor mounted on the printed wiring board is placed between the printed wiring board and the intelligent power module.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 11, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masahide FUJIWARA, Nobuyasu HIRAOKA, Keito KOTERA, Taku ITOU, Masaki KOUNO, Reiji KAWASHIMA
  • Publication number: 20230146651
    Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the flow rate of the refrigerant flowing through a region around an ignition energy generation portion in the compressor under a predetermined high-pressure condition is greater than or equal to 1 m/s.
    Type: Application
    Filed: December 30, 2022
    Publication date: May 11, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoyuki GOTOU, Takashi YOSHIMURA, Takashi USUI, Yuuko ITOU, Yuka WATANABE, Takuma IWASAKA, Youhei TAKAKURA, Yuuki YOTSUMOTO, Satoshi TOKUNO, Ryohei DEGUCHI
  • Publication number: 20230145115
    Abstract: Provided is a heat pump system having a compressor, a liquid-side on-off valve, a gas-side on-off valve, and a controller. The controller is configured to perform a refrigerant recovery operation for recovering refrigerant from a utilization-side piping section to a heatsource-side piping section by operating the compressor while the liquid-side on-off valve is closed and the gas-side on-off valve is open, and control the system such that the gas-side on-off valve starts closing when a predetermined valve-close condition is satisfied during the compressor is operating for recovering refrigerant, and such that the operation of the compressor for recovering refrigerant stops after the closing of the gas-side on-off valve started.
    Type: Application
    Filed: May 13, 2021
    Publication date: May 11, 2023
    Applicants: DAIKIN INDUSTRIES, LTD., DAIKIN EUROPE N.V.
    Inventors: Kevin CORNELIS, Satoshi KAWANO
  • Publication number: 20230144395
    Abstract: A method for producing a hollow fine particulate containing a fluorine-containing resin and having a large average particle size. The method includes dispersing a solution containing a fluorine-containing monomer, a phase separation promoter, and a non-polymerizable solvent into water to provide a dispersion, and polymerizing the fluorine-containing monomer to provide a hollow fine particulate containing a fluorine-containing resin.
    Type: Application
    Filed: January 6, 2023
    Publication date: May 11, 2023
    Applicants: DAIKIN INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
    Inventors: Yoshito TANAKA, Mayumi Iida, Hideto Minami