Patents Assigned to Daikin Industries, Ltd.
  • Publication number: 20200243911
    Abstract: The invention provides an electrolyte solution capable of providing an electrochemical device having low resistance and excellent high-temperature storage characteristics and cycle characteristics. The electrolyte solution contains lithium fluorosulfonate and a solvent containing a compound (1) represented by the following formula (1):CF2HCOOCH3.
    Type: Application
    Filed: July 31, 2018
    Publication date: July 30, 2020
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Yoshiko KUWAJIMA, Kenzou TAKAHASHI, Shigeaki YAMAZAKI, Hiroyuki ARIMA, Tomoya HIDAKA, Masakazu KINOSHITA, Hisako NAKAMURA, Takaya YAMADA, Toshiharu SHIMOOKA, Yuuki SUZUKI, Tatsuya OHTSUKA
  • Publication number: 20200240670
    Abstract: A camera (26) takes an image of at least one user (U1, U2, U3). A room environment information sensor (13) senses room environment information relating to an environment of a room (r1) in which the at least one user (U1, U2, U3) is present. The estimator (66) estimates a drowsiness condition of the at least one user (U1, U2, U3) based on the image of the at least one user (U1, U2, U3) taken by the camera (26) and the room environment information sensed by the room environment information sensor (13).
    Type: Application
    Filed: August 23, 2018
    Publication date: July 30, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keita KITAGAWA, Takuya KAZUSA, Youichi HANDA
  • Publication number: 20200240686
    Abstract: An outdoor expansion valve is provided for a liquid side pipe of an outdoor circuit. The outdoor circuit is provided with a liquid side bypass pipe that allows the liquid side pipe to communicate with a suction side of a compressor. Receiving a signal indicating that a refrigerant has leaked from an indoor circuit, an outdoor controller executes a refrigerant recovery control operation of operating the compressor with a liquid side control valve closed, and executes a valve control operation of opening a liquid side bypass valve of the liquid side bypass pipe in the refrigerant recovery control operation. As a result, the refrigerant can be recovered from an utilization-side circuit to a heat-source-side circuit while avoiding damage to the compressor, and the amount of refrigerant leaking from the utilization-side circuit can be reduced.
    Type: Application
    Filed: October 3, 2018
    Publication date: July 30, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Ryuzaburo YAJIMA
  • Patent number: 10724525
    Abstract: A compressor includes a compression mechanism having a ring-shaped first cylinder, a first piston eccentrically rotatable in an interior of the first cylinder, a first cylinder head member disposed adjacent to one axial end of the first cylinder, a second cylinder head member disposed adjacent to an other axial end of the first cylinder, and a fastening bolt. The fastening bolt fastens the first cylinder head member, the first cylinder, and the second cylinder head member together. An end face of the first cylinder head member contacts the first cylinder, and the end face is provided with a protecting groove. The protecting groove is formed closer to a center of the first cylinder than the fastening bolt, and has a groove width smaller than a groove depth of the protecting groove.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: July 28, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Yukihiro Inada, Kazuhiro Furusho, Eiji Kumakura
  • Publication number: 20200231797
    Abstract: A composition including a polymer and at least one compound selected from a reactive polydialkylsiloxane and a fluoropolyether, the polymer containing a perhaloolefin unit and a hydroxy group-containing monomer unit and having a hydroxyl value of 110 to 210 mgKOH/g.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yasukazu NAKATANI, Koichiro OGITA, Katsuhiko IMOTO
  • Publication number: 20200232709
    Abstract: A heat exchange unit including: a casing that includes a suction port on a side surface and a blow-out port on a top surface; a fan that faces the blow-out port in the casing and that feeds air into the casing through the suction port and discharges the air from the casing through the blow-out port; and a heat exchanger that is disposed below the fan in the casing and that causes a refrigerant to exchange heat with the air.
    Type: Application
    Filed: December 28, 2017
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Ken SATOU, Masanori JINDOU, Yoshio ORITANI, Kouju YAMADA, Satoshi INOUE
  • Publication number: 20200229454
    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: Application
    Filed: July 20, 2018
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hirotaka TAGAWA, Kazuyasu MATSUI, Makoto IKEMIYA
  • Publication number: 20200232665
    Abstract: A controlling unit controls a refrigerant circuit and a flow path switching mechanism to perform a first humidity control operation or a second humidity control operation. In the first humidity control operation, a bypass passage is closed, and outside air is supplied into a room through one of first and second adsorption heat exchangers, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers. In the second humidity control operation, the bypass passage is opened, and the outside air is supplied into the room through one of the first and second adsorption heat exchangers and the bypass passage, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers.
    Type: Application
    Filed: May 31, 2017
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kousuke HIRAI, Gakuto SAKAI
  • Publication number: 20200232656
    Abstract: An air-conditioning indoor unit includes: a casing disposed indoors; a fan disposed inside the casing; a heat exchanger disposed inside the casing and that includes a plurality of flat multi-perforated pipes arranged side by side and one above another; and a drain pan disposed below the heat exchanger. The heat exchanger includes an upper heat-exchange area and a lower heat-exchange area. When the heat exchanger is used as a condenser, a subcooling area subcools a refrigerant flowing in an interior of the heat exchanger. The subcooling area includes one or more of the flat multi-perforated pipes disposed in the lower heat-exchange area. The drain pan includes: a bottom portion that is disposed below the heat exchanger; and a wall that stands on the bottom portion and that is disposed on a downwind side of the heat exchanger.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 23, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shun YOSHIOKA, Yoshiyuki MATSUMOTO, Shouta AGOU
  • Patent number: 10720664
    Abstract: The present invention provides a lithium ion secondary cell excellent in high-temperature storage characteristics and high voltage cycle characteristics; and a nonaqueous electrolyte for the cell.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: July 21, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Hideo Sakata, Meiten Koh, Akiyoshi Yamauchi, Hitomi Nakazawa, Tomoyo Sanagi, Aoi Nakazono, Yuki Adachi, Kyouhei Sawaki, Akinori Tani, Masahiro Tomita, Michiru Kagawa
  • Patent number: 10717693
    Abstract: The present invention provides a method for producing a diol having a specific structure in high yields while keeping high selectivity. Provided is a method for producing a diol having a specific structure by oxidizing an olefin having a specific structure in the presence of a ruthenium compound.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 21, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomohito Hamada, Michiaki Okada, Akinori Yamamoto, Yosuke Kishikawa
  • Patent number: 10718540
    Abstract: The control section implements: a utilization cooling operation in which the thermal storage medium absorbs heat from the refrigerant and in which the refrigerant evaporates in the indoor heat exchanger, when the receiving section receives a first signal indicating a request for reduced use of power during an operation in which the room is cooled by the refrigerant evaporating in the indoor heat exchanger; and a cooling and cold thermal energy storage operation in which the refrigerant absorbs heat from the thermal storage medium and in which the refrigerant evaporates in the indoor heat exchanger, when the receiving section receives a second signal indicating a request for accelerated use of power during the operation in which the room is cooled by the refrigerant evaporating in the indoor heat exchanger.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 21, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kouichi Yasuo, Shuuji Fujimoto, Kebi Chen, Takuya Nakao
  • Patent number: 10709338
    Abstract: A useful information presentation device includes a facial skin temperature acquisition unit and/or a blood circulation volume acquisition unit, a brain activity estimation unit, and a useful information presentation unit. The facial skin temperature acquisition unit acquires facial skin temperature data in time-series. The blood circulation volume acquisition unit acquires photographic image data by imaging the facial surface in time-series. The brain activity estimation unit decomposes the facial skin temperature data and/or the facial blood circulation volume data into a plurality of components by singular value decomposition, principal component analysis, or independent component analysis, and the brain activity estimation unit estimating brain activity of the subject based on the plurality of components.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 14, 2020
    Assignees: Daikin Industries, Ltd., Tokyo Institute of Technology
    Inventors: Junichiro Arai, Takashi Gotou, Makoto Iwakame, Kenichi Hino, Tomoya Hirano, Yasunori Kotani, Yoshimi Ohgami, Taro Tomatsu
  • Patent number: 10712035
    Abstract: When refrigerant leakage occurs, a controller in an air conditioner performs first shutoff control to open a liquid relay shutoff valve and close an indoor expansion valve and a gas relay shutoff valve on the basis of information from a refrigerant leakage detector.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: July 14, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro Yamada, Yuusuke Nakagawa, Yuusuke Oka
  • Publication number: 20200220066
    Abstract: The present invention relates to a pressure signal detection circuit and a pressure signal detection method in which a pyroelectric signal from a piezoelectric film is suppressed. More specifically, the pressure signal detection circuit receives input of an input signal from a piezoelectric film, differentiates the input signal for signal component analysis of the input signal, outputs the signal analysis value of the input signal based on the differential value, removes offset of the input signal by using the signal component analysis value, integrates the input signal, and outputs a pressure input signal value from which a heat input signal value is removed. With this structure, the present invention reduces the influence on the thermal reaction as compared with prior art, while enabling pressure signal detection at a higher speed.
    Type: Application
    Filed: June 26, 2018
    Publication date: July 9, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Hyunsik KIM, Takashi KANEMURA, Tetsuhiro KODANI, Kwan-Young HAN
  • Publication number: 20200216735
    Abstract: An object is to provide a refrigerant composition that is comprehensively excellent in various properties usually required of refrigerants, i.e., (1) low GWP, stability, and minimized temperature glide, as well as in essential properties required of alternative refrigerants for R404A, i.e., (2) refrigerating capacity, compressor outlet pressure, and COP that are substantially equivalent to those of R404A. In order to achieve this object, a composition containing a refrigerant is provided wherein the refrigerant contains difluoromethane (R32), trifluoroethylene (R1123), and 2,3,3,3-tetrafluoropropene (R1234yf) at a mass ratio that falls within the region surrounded by lines a, c and d, which connect the following three points in a ternary composition diagram of FIG. 1 whose vertices represent the three components: point A (R32/R1123/R1234yf=25.6/13.4/61.0 mass %); point B (R32/R1123/R1234yf=25.6/3.4/71.0 mass %); and point C (R32/R1123/R1234yf=3.9/36.5/59.6 mass %).
    Type: Application
    Filed: June 11, 2018
    Publication date: July 9, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Shun OHKUBO, Hitomi KUROKI, Tatsumi TSUCHIYA, Kenji GOBOU
  • Patent number: 10704554
    Abstract: A cross-flow fan made of resin includes first and second fan blocks joined together. The first fan block includes a first support plate, plural first blades connected to the first support plate, and a first outer peripheral ring having a first ring portion that interconnects outer ends of the plural first blades. The second fan block includes a second support plate, plural second blades having second one-side distal ends connected to the second support plate, and a second outer peripheral ring having a second ring portion that interconnects outer ends of the plural second blades adjacent second other-side distal ends of the plural second blades. The second other-side distal ends of the plural second blades are joined to the first support plate, and the first support plate and the second outer peripheral ring are disposed adjacent to each other.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 7, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Satoshi Nakai, Nobuyasu Ichikawa
  • Patent number: 10703932
    Abstract: A surface-treating agent including at least one perfluoro(poly)ether group containing silane compound of the formula (1): wherein Rf, PFPE, Z, Q, R1, R2, X, Y, e, f, g, h and n are as defined herein. Also disclosed is a process for preparing the compound of formula (1).
    Type: Grant
    Filed: December 25, 2014
    Date of Patent: July 7, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kenichi Katsukawa, Hisashi Mitsuhashi, Kensuke Mohara, Tomohiro Yoshida, Masatoshi Nose, Takashi Namikawa
  • Patent number: 10696788
    Abstract: The present invention provides a compound represented by general formula (A1) or (A2): R1—(PE1-Y)n—PE2-X—(SiRakRblRcm)???(A1) (RcmRblRakSi)?—X—(PE1-Y)n—PE2-X—(SiRakRblRcm)???(A2) wherein each of symbols is as defined in the description.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 30, 2020
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiaki Honda, Nozomi Katsuma, Reina Moriyasu
  • Patent number: 10697474
    Abstract: An impeller of a centrifugal fan includes multiple blades arranged annularly around a rotational axis, a main plate, a shroud, main plate-side welded portions between main plate-side blade axial ends of the blades and the main plate, and shroud-side welded portions between shroud-side blade axial ends of the blades and the shroud. The main plate is arranged opposite to main plate-side blade axial ends. The shroud is arranged opposite to shroud-side blade axial ends. The main plate-side welded portions have main plate-side welding holes that are recesses extending through the main plate to portions of the main plate-side blade axial ends. The shroud-side welded portions have shroud-side welding holes that are recesses extending through the shroud to portions of the shroud-side blade axial ends.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 30, 2020
    Assignee: Daikin Industries, Ltd.
    Inventor: Shigeo Kumaou