Patents by Inventor Kenta ARAKI

Kenta ARAKI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11936078
    Abstract: The purpose of the present invention is to provide fuel cell system capable of stable start-up and method for starting the fuel cell system. Fuel cell system includes SOFC, a turbocharger, oxidizing gas supply line, a control valve, oxidizing gas blow line, start-up air line for supplying the start-up air to the oxidizing gas supply line with a blower, and a control unit that, in state in which the control valve is closed and the blow valve is opened to supply the start-up air to the oxidizing gas supply line with the blower when the turbocharger is started, decreases the opening of the blow valve and, after the timing at which the opening of the blow valve starts to decrease, increases the opening of the control valve and then stops the supply of the starting air.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
  • Patent number: 11876256
    Abstract: The purpose of the present invention is to provide: fuel cell system that can further stabilize an operation of the system; and control method thereof. Fuel cell system comprises: fuel cell; a turbocharger; oxidizing gas supply line that supplies, to cathode, oxidizing gas compressed by a compressor; a heat exchanger that heats the oxidizing gas of the oxidizing gas supply line by means of exhaust gas discharged from a turbine, and flows the exhaust gas to combustion exhaust gas line; bypass lines each having one end connected to the upstream side of the heat exchanger in the oxidizing gas supply line and bypassing the oxidizing gas; flow rate regulating valves provided in the bypass lines; and a control unit that controls the flow rate regulating valves on the basis of the ambient air temperature, and controls the bypass flow rate of the oxidizing gas.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
  • Patent number: 11824244
    Abstract: A fuel cell stack includes: a substrate; a first fuel cell including a fuel side electrode, an electrolyte, and an oxygen side electrode on the substrate, the first fuel cell being a single fuel cell; a second fuel cell including a fuel side electrode, an electrolyte, and an oxygen side electrode on the substrate, the second fuel cell being a single fuel cell; an interconnector film electrically connecting the fuel side electrode of the first fuel cell and the oxygen side electrode of the second fuel cell; and a porous ceramic film covering at least the interconnector film in a region between the fuel side electrode of the first fuel cell and the fuel side electrode of the second fuel cell.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: November 21, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kenichi Hiwatashi, Shin Yoshida, Kenta Araki, Kensuke Sameshima
  • Publication number: 20230253582
    Abstract: A heat insulation structure for a high-temperature reaction room includes a heat insulating body surrounding the reaction room. The heat insulating body contains a binder component including a metal element and is arranged so as to face an insulating film disposed on a cell stack. Transfer of metal ions originating in the metal element from the heat insulating body toward the insulating film is suppressed by a metal ion transfer suppression means.
    Type: Application
    Filed: December 25, 2020
    Publication date: August 10, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshiki Kato, Shigenori Suemori, Koji Miyamoto, Kenta Araki, Keijo Hara
  • Publication number: 20220416273
    Abstract: The purpose of the present invention is to provide fuel cell system capable of stable start-up and method for starting the fuel cell system. Fuel cell system includes SOFC, a turbocharger, oxidizing gas supply line, a control valve, oxidizing gas blow line, start-up air line for supplying the start-up air to the oxidizing gas supply line with a blower, and a control unit that, in state in which the control valve is closed and the blow valve is opened to supply the start-up air to the oxidizing gas supply line with the blower when the turbocharger is started, decreases the opening of the blow valve and, after the timing at which the opening of the blow valve starts to decrease, increases the opening of the control valve and then stops the supply of the starting air.
    Type: Application
    Filed: January 27, 2021
    Publication date: December 29, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
  • Publication number: 20220407096
    Abstract: The purpose of the present invention is to provide fuel cell system capable of stably executing differential pressure control and having a simplified configuration, and method for controlling the same. Fuel cell system equipped with fuel cell, a turbocharger, exhaust fuel gas line, exhaust oxidizing gas line, combustion gas supply line for supplying combustion gas discharged from a combustor to a turbine, oxidizing gas supply line for supplying oxidizing gas compressed by a compressor to cathode, a regulator valve provided to the exhaust fuel gas line, and a control unit for controlling the differential pressure between the pressure of the cathode of the fuel cell and the pressure of the anode thereof by controlling the regulator valve, wherein the exhaust oxidizing gas line is not provided with venting system for discharging exhaust oxidizing gas outside the system.
    Type: Application
    Filed: January 27, 2021
    Publication date: December 22, 2022
    Inventors: Hiroyuki OZAWA, Yasushi IWAI, Kimi KODO, Kenta ARAKI
  • Publication number: 20220376275
    Abstract: The purpose of the present invention is to provide: fuel cell system that can further stabilize an operation of the system; and control method thereof. Fuel cell system comprises: fuel cell; a turbocharger; oxidizing gas supply line that supplies, to cathode, oxidizing gas compressed by a compressor; a heat exchanger that heats the oxidizing gas of the oxidizing gas supply line by means of exhaust gas discharged from a turbine, and flows the exhaust gas to combustion exhaust gas line; bypass lines each having one end connected to the upstream side of the heat exchanger in the oxidizing gas supply line and bypassing the oxidizing gas; flow rate regulating valves provided in the bypass lines; and a control unit that controls the flow rate regulating valves on the basis of the ambient air temperature, and controls the bypass flow rate of the oxidizing gas.
    Type: Application
    Filed: January 27, 2021
    Publication date: November 24, 2022
    Inventors: Hiroyuki OZAWA, Yasushi IWAI, Kimi KODO, Kenta ARAKI
  • Publication number: 20220123345
    Abstract: A fuel cell stack comprises: a substrate; a plurality of single fuel cells each of which includes a fuel side electrode, an electrolyte, and an oxygen side electrode deposited on the substrate; an interconnector film electrically connecting the fuel side electrode of one single fuel cell of adjacent single fuel cells of the plurality of single fuel cells and the oxygen side electrode of the other single fuel cell; and a porous ceramic film covering at least the interconnector film in a region between a first fuel side electrode of one single fuel cell of adjacent single fuel cells and a second fuel side electrode of the other single fuel cell.
    Type: Application
    Filed: November 26, 2019
    Publication date: April 21, 2022
    Inventors: Kenichi HIWATASHI, Shin YOSHIDA, Kenta ARAKI, Kensuke SAMESHIMA
  • Patent number: 10733467
    Abstract: The purpose of the present invention is, when a portion of a subject to be detected is occluded, to simplify detecting that the occluded subject to be detected is the subject to be detected, regardless of the position which is occluded. Provided is an information processing device (110), comprising: a computation unit (111) which computes local scores for each of a plurality of positions which are contained in an image of a prescribed scope, said scores indicating the likelihood of an object to be detected being present; and a change unit (112) which changes the scores for the positions, among the plurality of positions, which are included in a prescribed region which is determined according to the plurality of scores which have been computed for said plurality of positions, such that the likelihood of the object to be detected being present increases.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: August 4, 2020
    Assignee: NEC CORPORATION
    Inventor: Kenta Araki
  • Patent number: 10635919
    Abstract: The purpose of the present invention is, when a portion of a subject to be detected is occluded, to simplify detecting that the occluded subject to be detected is the subject to be detected, regardless of the position which is occluded. Provided is an information processing device (110), comprising: a computation unit (111) which computes local scores for each of a plurality of positions which are contained in an image of a prescribed scope, said scores indicating the likelihood of an object to be detected being present; and a change unit (112) which changes the scores for the positions, among the plurality of positions, which are included in a prescribed region which is determined according to the plurality of scores which have been computed for said plurality of positions, such that the likelihood of the object to be detected being present increases.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: April 28, 2020
    Assignee: NEC CORPORATION
    Inventor: Kenta Araki
  • Publication number: 20190228249
    Abstract: The purpose of the present invention is, when a portion of a subject to be detected is occluded, to simplify detecting that the occluded subject to be detected is the subject to be detected, regardless of the position which is occluded. Provided is an information processing device (110), comprising: a computation unit (111) which computes local scores for each of a plurality of positions which are contained in an image of a prescribed scope, said scores indicating the likelihood of an object to be detected being present; and a change unit (112) which changes the scores for the positions, among the plurality of positions, which are included in a prescribed region which is determined according to the plurality of scores which have been computed for said plurality of positions, such that the likelihood of the object to be detected being present increases.
    Type: Application
    Filed: April 2, 2019
    Publication date: July 25, 2019
    Applicant: NEC CORPORATION
    Inventor: Kenta Araki
  • Publication number: 20180300573
    Abstract: The purpose of the present invention is, when a portion of a subject to be detected is occluded, to simplify detecting that the occluded subject to be detected is the subject to be detected, regardless of the position which is occluded. Provided is an information processing device (110), comprising: a computation unit (111) which computes local scores for each of a plurality of positions which are contained in an image of a prescribed scope, said scores indicating the likelihood of an object to be detected being present; and a change unit (112) which changes the scores for the positions, among the plurality of positions, which are included in a prescribed region which is determined according to the plurality of scores which have been computed for said plurality of positions, such that the likelihood of the object to be detected being present increases.
    Type: Application
    Filed: October 4, 2016
    Publication date: October 18, 2018
    Applicant: NEC CORPORATION
    Inventor: Kenta ARAKI