Patents Assigned to Daikin Industries, Ltd.
  • Patent number: 11971186
    Abstract: An information processing apparatus performs a first estimation process based on a data set including a combination of information indicating a situation and information on power consumption when a first air conditioner, installed in a predetermined location, has been operated. The first estimation process is a process of estimating information on power consumption when the first air conditioner, installed in the predetermined location, is operated in a predetermined situation.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tadafumi Nishimura, Kouji Nagasawa
  • Patent number: 11971203
    Abstract: A refrigerant amount determining device includes: an operation data acquiring unit configured to acquire operation data of an air conditioning system; a calculating unit configured to calculate a refrigerant amount index value from the operation data acquired; an inferring unit configured to infer information regarding correction of the refrigerant amount index value using a correction model and at least one of the acquired operation data or the calculated refrigerant amount index value; and a determining unit configured to determine a refrigerant amount of the air conditioning system based on the information regarding correction of the refrigerant amount index value.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Manabu Yoshimi, Takeshi Hikawa, Shinichi Kasahara, Shohei Yamada, Hiroyuki Kagitani, Hidetaka Kishimoto
  • Patent number: 11971188
    Abstract: A problem to be solved by the present disclosure is to realize a fan unit capable of determining occurrence or non-occurrence of a backflow during operation. In a second unit, a second controller calculates front-rear differential pressure by substituting a rotation speed and a volume of air or a wind speed that can be acquired in real time into a relational expression. The relational expression derives, from two values of the rotation speed, the volume of air or the wind speed, and the front-rear differential pressure, the remaining one value. Then, the second controller determines that a backflow occurs if the calculated front-rear differential pressure is within a range that cannot occur under a normal condition. Therefore, the occurrence of a backflow can be detected without using an expensive pressure sensor or a directional wind speed sensor.
    Type: Grant
    Filed: February 2, 2023
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Akira Komatsu, Shuuichi Tanaka, Tooru Fujimoto
  • Patent number: 11970651
    Abstract: A surface treatment agent containing: (A) a water repellent oil repellent polymer having a repeating unit derived from at least one water repellent oil repellent monomer selected from (A1) fluorine-containing monomers and (A2) non-fluorine monomers having a hydrocarbon group with 7-40 carbon atoms; (B) a silicone polymer represented by formula R533Si—O—[—Si(R51)2—O—]a—[—Si(R51)(R52)—O—]b—SiR533 (wherein each R51 group independently represents hydrogen, alkyl having 1-20 carbon atoms, aryl having 6-20 carbon atoms or alkoxy having 1-4 carbon atoms; each R52 independently represents a saturated hydrocarbon group having 23-40 carbon atoms; each R53 independently represents a hydrogen atom, an alkyl group having 1-20 carbon atoms, an aryl group having 6-20 carbon atoms, an alkoxy group having 1-4 carbon atoms or a saturated hydrocarbon group having 23-40 carbon atoms; a represents an integer of 0 or more; b represents an integer of 1 or more; and (a+b) is 10-200); and (C) a liquid medium.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kanako Takahashi, Ryousuke Hara, Ikuo Yamamoto
  • Patent number: 11970611
    Abstract: The present invention provides a member for a wearable device, the member including a resin base material, an electronic component, and a protecting layer which protects the electronic component, wherein the protecting layer is a layer formed from a curable composition including a perfluoropolyether group-containing compound.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshiaki Honda, Teruyuki Fukuda
  • Patent number: 11971045
    Abstract: A drive support unit of a turbo compressor includes at least one bearingless motor. The at least one bearingless motor includes a rotor-stator pair constituted by a rotor and a stator, and is configured to rotationally drive a drive shaft and to support a radial load of the drive shaft in a contactless manner. Accordingly, it is possible to provide a turbo compressor to which a bearingless motor is applied.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 30, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Yuji Nakazawa, Atsushi Sakawaki, Hirofumi Higashi, Taiichi Nose, Takaaki Ono, Yusuke Irino
  • Patent number: 11971037
    Abstract: In a compressor compressing a refrigerant including hydrocarbon fluoride prone to disproportionate, provided, on a contact portion of the drive shaft and the bearing portion, is an elastic bearing portion as a heat generation suppression portion suppressing excessive heat generation due to line contact of an end edge portion of the bearing portion with the drive shaft during rotation of the drive shaft.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: April 30, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji Kumakura, Kazuhiro Furusho
  • Publication number: 20240132432
    Abstract: Provided is a compound represented by Formula (1A) below wherein the symbols are as defined in the description: Also disclosed are a composition containing at least one of the compound and a formed article of the compound.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 25, 2024
    Applicants: Kyoto University, DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoki OGOSHI, Katsuto ONISHI, Shuhei YAMAGUCHI, Yuko SHIOTANI, Masaji KOMORI, Hirokazu AOYAMA, Yosuke KISHIKAWA, Akiyoshi YAMAUCHI
  • Publication number: 20240132633
    Abstract: A method for producing an aqueous dispersion of a fluorine-containing elastomer, which includes polymerizing a fluorine-containing monomer in the presence of an aqueous medium and a fluorine-containing compound (A), wherein the fluorine-containing elastomer contains a methylene group in a main chain, the fluorine-containing compound (A) is a compound represented by general formula (A): CXiXk?CXjRa—(CZ1Z2)k—Y3??(A) wherein Xi, Xj, and Xk are the same or different and are F, Cl, H, or CF3; Y3 is a hydrophilic group; Ra is a linking group; Z1 and Z2 are the same or different and are H, F, or CF3; and k is 0 or 1; provided that at least one of Xi, Xk, Xj, Ra, Z1, and Z2 includes F; and the number of carbon atoms in a portion excluding the hydrophilic group is 6 or less, and the fluorine-containing compound (A) is fed after polymerization is initiated.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 25, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Sota YUASA, Tatsuya Morikawa, Rina Tamai, Kouhei Takemura, Masaki Irie
  • Patent number: 11967909
    Abstract: In a first section of a power conversion device, a second switch is turned off, a first duty drec and a third duty dz are selected so that a direct current voltage Vdc to be input to a current source becomes equal to a direct current voltage command value Vdc*, a first conversion operation of supplying power from the voltage source to the current source is performed, and the capacitor is charged by the rectified voltage via the clamp diode. In a second section of the power conversion device, a first switch is turned off, a second duty dc and the third duty dz are selected so that the direct current voltage Vdc to be input to the current source becomes equal to the direct current voltage command value Vdc*, and a second conversion operation of supplying power from the capacitor to the current source is performed.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Kenichi Sakakibara, Tomoisa Taniguchi
  • Patent number: 11967880
    Abstract: A power supply circuit supplies a current from a DC voltage source to first and second actuator coils to support an object in a non-contact manner by electromagnetic force. The power supply circuit includes a first leg connected to the DC voltage source, and a control unit. The first leg has first upper and lower arm switching elements connected in series. The control unit turns the switching elements on and off to control the current supplied to the actuator coils. A midpoint between the switching elements is connected to a connection point between the actuator coils. A freewheeling diode is provided for each of the switching elements in parallel. The control unit performs control so that the current flows through the first actuator coil in a direction toward the connection point, and the current flows through the second actuator coil in a direction coming out of the connection point.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventor: Masaki Nakaishi
  • Patent number: 11965060
    Abstract: A fluorine-containing epoxy resin for an electronic component represented by the following formula (E) wherein n is an integer of 0 or greater, an average value of n is 0.18 or smaller, and M is a group represented by the following formula (E1), a group represented by the following formula (E2), or a group represented by the following formula (E3) wherein Z is hydrogen or a C2-C10 fluoroalkyl group. The formula (E) being: the formula (E1) being: the formula (E2) being: the formula (E3) being: Also disclosed is a method for producing the fluorine-containing epoxy resin as well as a curable composition containing the fluorine-containing epoxy resin and a curing agent.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: April 23, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshito Tanaka, Tomohiro Yoshida
  • Patent number: 11963633
    Abstract: Provided is a cooking utensil having an excellent design. The cooking utensil includes a bottom and a side extending substantially upward from a perimeter of the bottom. The bottom includes a bottom laminate film on an inner surface thereof. The side includes a side laminate film that is different from the bottom laminate film on an inner surface thereof. The bottom laminate film and the side laminate film have different color tones.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: April 23, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Fumiko Shigenai, Hiromichi Momose, Yasukazu Nakatani, Tomohiro Shiromaru
  • Patent number: 11965665
    Abstract: An air conditioning system includes an air conditioning apparatus, and a controller. The air conditioning apparatus performs air conditioning of an air-conditioning target space. The controller is connectable to a plurality of types of thermostats. The controller performs communication with the thermostat connected thereto. The controller performs a performance determination process for the refrigeration cycle apparatus. The controller performs different performance determination processes according to whether a first type of thermostat is connected thereto unit or whether a second type of thermostat is connected thereto. Alternatively, the air conditioning apparatus changes a method for using information received by the controller from the thermostat according to whether being in a determination processing time over which the performance determination process is performed or in a non-determination processing time over which the performance determination process is not performed.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Shizuka Sadai, Akihiro Inao, Shuji Fujimoto, Shinichi Kasahara
  • Patent number: 11965678
    Abstract: A rotary compressor includes a casing, a compression mechanism housed in the casing and having a suction port, a joint pipe fixed to the casing and formed into a cylindrical shape, a suction pipe arranged inside the joint pipe and communicating with the suction port, and an accumulator including an outlet pipe connected to an inlet end of the suction pipe. A large diameter portion formed on an inlet side of the suction pipe is fixed to an inner peripheral surface of the joint pipe, and a small diameter portion formed on an outlet side of the suction pipe has a smaller outside diameter than the large diameter portion. The joint pipe is made of an iron-based material. A clearance is formed between an outer peripheral surface of the small diameter portion of the suction pipe and the inner peripheral surface of the joint pipe.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventor: Shota Kamei
  • Patent number: 11968173
    Abstract: A communication system includes a first device, second devices, and a communication line providing a serial connection from the first device to the second devices to establish a communication connection. An address setting device of the communication system is configured to set addresses of the second devices. The address setting device includes a communication controller. The communication controller is configured to transmit a transmission signal toward the second devices through the communication line and change at least one of an amplitude or a frequency of the transmission signal, and associate the addresses of the second devices with connection precedence of the second devices to the first device based on a reception signal received through the communication line.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: April 23, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroshi Doumae, Shin Higashiyama, Hiroki Ueda
  • Patent number: 11965667
    Abstract: This disclosure aims to provide a technique for improving the accuracy of prediction. A first trained model for inferring labels for measurement data is generated based on a first data set. The first data set includes: combined data that are a combination of first measurement data, which are related to a first air conditioning apparatus, and labels set for the first measurement data; and second measurement data related to the first air conditioning apparatus.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: April 23, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Tomohiro Noda
  • Publication number: 20240125484
    Abstract: A system includes: a heat generator obtaining heat from a heat source and having a generator outlet port and a generator return port; a central heating circuit having a heating feed port and a heating return port; a tank having a top portion and a bottom portion, the tank containing a heat storing medium; a first tapping coil immersed in the heat storing medium in the bottom portion of the tank; and a second tapping coil immersed in the heat storing medium in the top portion of the tank The heat generator, second tapping coil, central heating circuit, and first tapping coil are fluidly connected in series to allow fluid to flow from the heat generator via at least one of the second tapping coil, the central heating circuit, and the first tapping coil back to the heat generator The system includes first, second and third three-way valves.
    Type: Application
    Filed: February 4, 2022
    Publication date: April 18, 2024
    Applicants: DAIKIN INDUSTRIES, LTD., DAIKIN EUROPE N.V.
    Inventor: Timo KIRSCHNER
  • Publication number: 20240127505
    Abstract: [Object] To contribute to improvement in convenience regarding setting of a target value in demand control by providing in a graph indicating, for each time period, a power consumption record in the time period, information on the date and time of the time period. [Solution] An information processing device includes a display unit, a display control unit configured to cause the display unit to display a screen, and a reception unit configured to receive a setting related to control on power consumption by a user. The display control unit causes the display unit to display power consumption records in predetermined respective time periods in a graph 411 of the time periods, and to display information on the date and time of the time periods in the graph 411.
    Type: Application
    Filed: December 27, 2023
    Publication date: April 18, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Yoshihiro NAKAGAWA
  • Publication number: 20240125488
    Abstract: An air conditioning system includes: an outdoor unit including a first refrigerant circuit that includes a compressor and a first heat exchanger; a first indoor unit disposed in a first indoor space and that includes a second heat exchanger; a second indoor unit including a third heat exchanger; an intermediate unit including an intermediate refrigerant circuit that causes the second heat exchanger and the third heat exchanger to individually function as an evaporator or a condenser; and a first auxiliary refrigerant circuit including a first auxiliary heat exchanger and a second auxiliary heat exchanger connected in series to the first auxiliary heat exchanger via a refrigerant pipe.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 18, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuta Fukuyama, Shinya Matsuoka, Takaya Nakanishi