Patents Assigned to Daikin Industries, Ltd.
  • Publication number: 20250151227
    Abstract: A control device including a control unit configured to control a fan system including a fan and a motor for driving the fan is disclosed. The control unit includes a fan characteristic storage unit configured to store correlated information correlated to a fan characteristic, the fan characteristic being a characteristic of the fan. The control unit controls the fan system based on the correlated information. The control unit includes a correction unit configured to correct the correlated information to correspond to changes in the fan characteristic occurring as a function of deformation over time of the fan.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro YOKOYAMA, Takeshi ARAKI, Shimpei MIURA
  • Publication number: 20250145781
    Abstract: Provided is a fluororesin film with high uniformity in adhesion strength of the film. A fluororesin film that is a film comprising a fluororesin-containing composition, wherein at least one surface of the fluororesin film has an average value of contact angles for water measured at 5 points with intervals of 100 mm in a travel direction of 105° or less and an average value of contact angles for n-hexadecane measured at 5 points with intervals of 100 mm in the travel direction of 45° or less at locations of center and 100 mm from respective left and right ends.
    Type: Application
    Filed: January 13, 2025
    Publication date: May 8, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masahiko KAWAMURA, Tatsuya HIGUCHI, Kenzo TAKAHASHI, Hirokazu KOMORI, Hideaki TENKAJI, Junpei TERADA, Nobuyuki KOMATSU
  • Publication number: 20250145816
    Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.0 to 11.5% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.3 to 0.7% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 0.9 to 7.5 g/10 min.
    Type: Application
    Filed: January 8, 2025
    Publication date: May 8, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadaharu ISAKA, Yumi ZENKE, Yukari YAMAMOTO
  • Publication number: 20250146214
    Abstract: The present disclosure addresses the problem of providing a method for imparting liquid repellency to fibers even when the amount of water and/or a surfactant is reduced, preferably without using water and/or a surfactant. Provided is a method for producing liquid-repellent fibers, the method comprising a fiber treatment step in which supercritical carbon dioxide is used as a treatment medium and a fiber base material is treated with a repellent containing a liquid-repellent compound, whereby liquid repellency can be imparted to the fibers even when the amount of water and/or a surfactant is reduced, preferably without using water and/or a surfactant.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Applicants: DAIKIN INDUSTRIES, LTD., UNIVERSITY OF FUKUI
    Inventors: Tatsunori SAKAMAKI, Masahiro HIGASHI, Teruo HORI, Kazumasa HIROGAKI, Isao TABATA
  • Publication number: 20250145746
    Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 8.6 to 11.9% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.5 to 1.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.6 to 14.4 g/10 min, and a total number of —CF2H, a carbonyl group-containing terminal group, —CF?CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.
    Type: Application
    Filed: January 8, 2025
    Publication date: May 8, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadaharu ISAKA, Yumi ZENKE, Yukari YAMAMOTO
  • Publication number: 20250146766
    Abstract: A heat exchanger includes: flat tubes disposed in a first direction; and a fin joined to the flat tubes. The heat exchanger causes heat exchange between: a refrigerant that flows inside the flat tubes, and air that flows outside the flat tubes along a second direction that intersects the first direction. The fin includes: a first joint portion joined to a first flat tube included in the flat tubes; and a first plate portion between an air flow downstream end of the fin and the first joint portion. The first plate portion includes a protruding portion that causes water to flow in the first direction in a vicinity of the first flat tube.
    Type: Application
    Filed: January 7, 2025
    Publication date: May 8, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Aya Okuno, Ken Satou, Tomoki Hirokawa, Tooru Andou, Chen Zheng, Kengo Uchida
  • Patent number: 12294269
    Abstract: A motor includes a stator core having an annular shape, a coil wound around a tooth of the stator core, a first terminal electrically connected to the coil, a housing that houses the first terminal, and a second terminal at least partially inserted into the first terminal housed in the housing. The second terminal includes an electrical connecting portion inserted into the first terminal and electrically connected to the first terminal. The housing includes a first restricting portion that restricts movement, in a circumferential direction of the stator core, of a portion of the second terminal other than the electrical connecting portion.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Yoshinori Takayama
  • Patent number: 12292044
    Abstract: A rotary compressor includes a cylindrical casing, an electric motor, and a compression mechanism. The cylindrical casing has first and second end plates ends in an axial direction. The electric motor is a variable-speed electric motor. The electric motor is disposed in the casing in which a first space is sandwiched between the electric motor and the first end plate. The compression mechanism is disposed in the casing in which a second space is sandwiched between the compression mechanism and the electric motor. The compression mechanism is coupled with the electric motor. The rotational compressor satisfies 0.8?(A+B)*D2/(Vcc*Nmax)?1.0. An axial length of the first space is A, an axial length of the second space is B, an inner diameter of the casing is D, a suction volume per rotation of the compression mechanism is Vcc, and a maximum rotational speed of the compression mechanism is Nmax.
    Type: Grant
    Filed: August 21, 2024
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiromichi Ueno, Tatsuya Katayama
  • Patent number: 12291665
    Abstract: An object is to provide a novel low-GWP mixed refrigerant. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi Itano, Shun Ohkubo, Daisuke Karube
  • Patent number: 12290078
    Abstract: An internal air adjustment device supplies low-oxygen-concentration air to a storage, and maintains the oxygen concentration of internal air in a target oxygen concentration range that is lower than a reference concentration. The internal air adjustment device performs an oxygen-concentration restoration operation. The oxygen-concentration restoration operation is an operation of increasing the oxygen concentration of the internal air to the reference concentration from the target oxygen concentration range. In the oxygen-concentration restoration operation, a controller of the internal air adjustment device regulates the flow rate of external air that is supplied into the interior of the storage.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Motomi Nishimoto, Naohiro Tanaka
  • Patent number: 12294240
    Abstract: A motor includes a rotor and stator. The stator includes a stator iron core having a substantially annular yoke, and a plurality of teeth extending from the yoke toward the rotor. Each tooth includes an extending portion with a winding wire wound in a concentrated manner to form a coil, and flange portions extending circumferentially from a tip end portion of the extending portion. The plurality of teeth include adjacent first second teeth with coils having identical phases, and adjacent third and fourth teeth with coils having different phases. A first magnetic resistance circumferentially from a tip end portion of the first flange portion to a center of the extending portion of the first tooth is higher than a second magnetic resistance circumferentially from a tip end portion of the second flange portion to a center of the extending portion of the third tooth.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shunsuke Shimizu, Masaki Hirano, Hiroshi Hibino, Yoshitaka Okuyama
  • Patent number: 12291624
    Abstract: A polytetrafluoroethylene composition containing polytetrafluoroethylene and fibrous filler. The fibrous filler has an average fiber length of 100 ?m or shorter and includes fibers having a fiber length of longer than 160 ?m in a proportion of 15% by mass or less.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: May 6, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Ken Yoshida, Keisuke Hagi, Hirokazu Yukawa
  • Publication number: 20250140442
    Abstract: A flat wire including a flat conductor having at least one bent portion bent in an edgewise direction and a covering layer formed on the outer periphery of the flat conductor is provided, wherein the covering layer is formed by covering the flat conductor having bent portion with a heat-shrinkable tube and shrinking the heat-shrinkable tube.
    Type: Application
    Filed: January 2, 2025
    Publication date: May 1, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hiroaki Wada, Seika Fujioka, Kazushi Horisawa, Hideki Kono, Masamichi Sukegawa
  • Publication number: 20250135433
    Abstract: [Object] To suppress a decrease in the adsorption performance of an adsorbent containing diatomaceous earth and a basic compound. [Solution] An adsorbent for adsorbing an acid gas contains diatomaceous earth, a basic compound, and a saccharide.
    Type: Application
    Filed: September 27, 2022
    Publication date: May 1, 2025
    Applicants: DAIKIN INDUSTRIES, LTD., The University of Tokyo
    Inventors: Takuya MATSUOKA, Mayu NISHIMURA, Ichiro SAKATA, Bunshi FUGETSU, Vipin ADAVAN KILIYANKIL, Takayuki UEKI
  • Publication number: 20250137698
    Abstract: A fluid transfer apparatus includes a control device configured to determine whether or not a structure is in a clogged state, using a physical quantity obtained from a motor and correlated with a pressure loss in a fluid passage, At least one of a transfer section or the fluid passage is configured to make a proportion of a disturbance to the physical quantity small.
    Type: Application
    Filed: December 31, 2024
    Publication date: May 1, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shimpei MIURA, Takahiro YOKOYAMA, Takuro OGAWA, Takeshi ARAKI
  • Patent number: 12287109
    Abstract: A disadvantage such as loss of life to a bearing of an indoor fan motor may occur when the number of rotations of the indoor fan falls below a predetermined number of rotations. An indoor unit includes a fan, a casing, a first horizontal flap, a second horizontal flap, and an indoor controller. The casing accommodates the fan, and has a blow-out port through which air provided by the fan is blown out. The indoor controller performs opening and closing operations to bring the first and second horizontal flaps into a first state in decreasing an airflow volume to be blown out through the blow-out port. In the first state, the first horizontal flap is in a position to open a first portion of the blow-out port while the second horizontal flap is in or substantially in a position to close a second portion of the blow-out port.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: April 29, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Satoshi Nakai, Tetsuya Yamashita, Hideaki Konishi
  • Patent number: 12286523
    Abstract: A crosslinkable elastomer composition including a crosslinkable elastomer and a surface-oxidized non-oxide ceramic. Also disclosed is a fluoroelastomer molded article having a weight reduction percentage of 2.5% by mass or less and an amount of particles generated of 0.05% by mass or less after O2 plasma irradiation, a weight reduction percentage of 1.8% by mass or less, an amount of particles generated of 0.05% by mass or less after NF3 plasma irradiation, and a compression set of 50% or less after aging at 300° C. for 70 hours.
    Type: Grant
    Filed: July 21, 2023
    Date of Patent: April 29, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Seiichi Hirano, Tsuyoshi Noguchi
  • Patent number: 12286513
    Abstract: An object of the present disclosure is to provide a method for producing a fluorine-containing polymer and a composition containing the fluorine-containing polymer. The present disclosure provides a composition comprising (A) a fluorine-containing polymer comprising as a main component a structural unit containing a fluorine-containing aliphatic ring, and (B) an aprotic solvent, wherein the fluorine-containing aliphatic ring of the fluorine-containing polymer (A) contains one, two, or three etheric oxygen atoms as a ring-constituting atom; when the fluorine-containing aliphatic ring contains a plurality of etheric oxygen atoms, the etheric oxygen atoms are not adjacent to each other; and the fluorine-containing polymer (A) is present in an amount of 20 mass % or more based on the mass of the composition.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: April 29, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuuki Suzuki, Makoto Matsuura, Akitoshi Ogata, Atsushi Shirai, Michiaki Okada, Shiomi Ashida, Yoshito Tanaka, Yosuke Kishikawa
  • Patent number: 12285022
    Abstract: An internal air adjustment device (30) includes an internal-side passage (70) and an internal-side treatment unit (152). The internal-side separator (61) in the internal-side passage (70) separates return air from internal air. The composition of the return air differs from the composition of the internal air. The internal-side passage (70) supplies the return air into a storage (1). The internal-side treatment unit (152) decomposes ethylene in air that flows in the internal-side passage (70). Therefore, the concentration of ethylene of the return air is lower than the concentration of ethylene of the internal air.
    Type: Grant
    Filed: October 7, 2021
    Date of Patent: April 29, 2025
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Naohiro Tanaka
  • Publication number: 20250132344
    Abstract: A surface-treating agent for an electrode material includes a pyridine skeleton and fluorine. A positive electrode active material, a current collector foil, a negative electrode active material, each treated with the surface-treating agent, an electrode, and a battery, are provided. A method for producing a positive electrode active material, a method for producing a current collector foil, a method for producing a negative electrode active material, a method for producing a conductive aid, and a method for producing an electrode which are capable of improving the cycle characteristics of batteries and preventing or reducing corrosion of current collector foils, are provided.
    Type: Application
    Filed: December 23, 2024
    Publication date: April 24, 2025
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kae Fujiwara, Shigeaki Yamazaki, Junpei Terada, Rene Jakelski, Dominic Bresser, Matthias Kunzel, Arefeh Kazzazi, Vidur Kumar, Stefano Passerini