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).
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Patent number: 11936078Abstract: 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: GrantFiled: January 27, 2021Date of Patent: March 19, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
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Patent number: 11876256Abstract: 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: GrantFiled: January 27, 2021Date of Patent: January 16, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
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Patent number: 11824244Abstract: 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: GrantFiled: November 26, 2019Date of Patent: November 21, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kenichi Hiwatashi, Shin Yoshida, Kenta Araki, Kensuke Sameshima
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Publication number: 20230253582Abstract: 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: ApplicationFiled: December 25, 2020Publication date: August 10, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshiki Kato, Shigenori Suemori, Koji Miyamoto, Kenta Araki, Keijo Hara
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Publication number: 20220416273Abstract: 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: ApplicationFiled: January 27, 2021Publication date: December 29, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hiroyuki Ozawa, Yasushi Iwai, Kimi Kodo, Kenta Araki
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Publication number: 20220407096Abstract: 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: ApplicationFiled: January 27, 2021Publication date: December 22, 2022Inventors: Hiroyuki OZAWA, Yasushi IWAI, Kimi KODO, Kenta ARAKI
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Publication number: 20220376275Abstract: 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: ApplicationFiled: January 27, 2021Publication date: November 24, 2022Inventors: Hiroyuki OZAWA, Yasushi IWAI, Kimi KODO, Kenta ARAKI
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Publication number: 20220123345Abstract: 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: ApplicationFiled: November 26, 2019Publication date: April 21, 2022Inventors: Kenichi HIWATASHI, Shin YOSHIDA, Kenta ARAKI, Kensuke SAMESHIMA
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Patent number: 10733467Abstract: 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: GrantFiled: October 4, 2016Date of Patent: August 4, 2020Assignee: NEC CORPORATIONInventor: Kenta Araki
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Patent number: 10635919Abstract: 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: GrantFiled: April 2, 2019Date of Patent: April 28, 2020Assignee: NEC CORPORATIONInventor: Kenta Araki
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Publication number: 20190228249Abstract: 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: ApplicationFiled: April 2, 2019Publication date: July 25, 2019Applicant: NEC CORPORATIONInventor: Kenta Araki
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Publication number: 20180300573Abstract: 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: ApplicationFiled: October 4, 2016Publication date: October 18, 2018Applicant: NEC CORPORATIONInventor: Kenta ARAKI