Patents by Inventor Mitsunori Isono
Mitsunori Isono 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: 11085637Abstract: A gas turbine combustor includes a pilot burner disposed on a central portion of a combustion liner; and a plurality of main burners disposed to surround the pilot burner. The pilot burner includes: a pilot nozzle disposed on the central portion of the combustion liner; and a pilot cone including a widened portion widening downstream away from a downstream end of the pilot nozzle, and an annular portion having an annular shape extending outward in a radial direction from a downstream opening end of the widened portion. The annular portion includes a first position in a circumferential direction and a second position different from the first position in the circumferential direction, and the first position and the second position have different widths in the radial direction.Type: GrantFiled: March 12, 2019Date of Patent: August 10, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Mitsunori Isono, Keijiro Saito, Shuhei Hosaka
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Patent number: 10837642Abstract: Provided are a combustor nozzle, a gas turbine combustor, a gas turbine, a cover ring, and a combustor nozzle manufacturing method. The combustor nozzle includes: a nozzle body provided with a fuel flow passage; a cover ring that is disposed on an outer side of the nozzle body so as to form air flow passages that allow air to jet out toward a front side; and fuel injection nozzles that are provided in a leading end part of the nozzle body at predetermined intervals in a circumferential direction and extend through the cover ring so as to be able to inject fuel from the fuel flow passage toward the front side.Type: GrantFiled: June 8, 2016Date of Patent: November 17, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Masaki Mitani, Koshiro Fukumoto, Toshihiko Saito, Mitsunori Isono, Dai Morishige, Nobuyuki Izutsu, Hiroyuki Yamasaki, Yoshiyuki Wada
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Publication number: 20200182469Abstract: Provided is a combustor that includes a plurality of main burners disposed at intervals in a circumferential direction. The main burners include first main burners (16A) and second main burners (16B) that separately generate fuel-air mixtures. The second main burners (16B) generate fuel-air mixtures that have less evenness in concentration of fuel than the fuel-air mixtures generated by the first main burners (16A).Type: ApplicationFiled: July 19, 2018Publication date: June 11, 2020Inventors: Mitsunori ISONO, Keijiro SAITO, Satoshi TAKIGUCHI
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Publication number: 20200056788Abstract: A combustor is equipped with first burners each adopted as a main burner circulating a primary air to generate an air-fuel mixture, second burners each adopted as the main burner circulating the primary air in a direction opposite to the first burners to generate another air-fuel mixture. A plurality of main burners are disposed at intervals in a circumferential direction, and the first burner and the second burner are disposed in a non-periodic arrangement pattern over an entire circumference in the circumferential direction.Type: ApplicationFiled: February 21, 2018Publication date: February 20, 2020Inventors: Mitsunori ISONO, Keijiro SAITO
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Patent number: 10557439Abstract: An injection device, a combustor, and a rocket engine include a device main body partitioned into a fuel manifold and an oxidant manifold, and a plurality of injectors arranged at predetermined intervals in the device main body to inject fuel and oxidant into a combustion chamber, each of the injectors includes a LOx channel including a proximal end portion communicating with the oxidant manifold and a distal end portion communicating with the combustion chamber, a restrictor provided on the proximal end portion of the LOx channel and a GH2 channel including a proximal end portion communicating with the fuel manifold and a distal end portion communicating with the combustion chamber, and the restrictors have different shapes.Type: GrantFiled: October 20, 2016Date of Patent: February 11, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Mitsunori Isono, Kazufumi Ikeda, Hiroyasu Manako, Shinichiro Watanabe, Hideto Kawashima
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Patent number: 10480414Abstract: A combustor includes fuel nozzles that extend in an axial direction of a combustor main body and are capable of injecting fuel from injection holes on a combustion chamber side. The combustor includes a phase adjusting unit which partially changes a flow path cross-sectional area of at least one of the fuel nozzles in the axial direction such that phases of flow rate fluctuation of fuel do not match with respect to at least two of the fuel nozzles.Type: GrantFiled: February 14, 2014Date of Patent: November 19, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Mitsunori Isono, Toshihiko Saito, Kotaro Miyauchi
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Publication number: 20190293287Abstract: A gas turbine combustor includes a pilot burner disposed on a central portion of a combustion liner; and a plurality of main burners disposed to surround the pilot burner. The pilot burner includes: a pilot nozzle disposed on the central portion of the combustion liner; and a pilot cone including a widened portion widening downstream from a vicinity of a downstream end of the pilot nozzle, and an annular portion having an annular shape extending outward in a radial direction from a downstream opening end of the widened portion. The annular portion includes a first position in a circumferential direction and a second position different from the first position in the circumferential direction, and the first position and the second position have different widths in the radial direction.Type: ApplicationFiled: March 12, 2019Publication date: September 26, 2019Inventors: Mitsunori ISONO, Keijiro SAITO, Shuhei HOSAKA
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Publication number: 20180363589Abstract: A combustor and a rocket engine include an injection device that injects an oxidizing agent and fuel from an injecting surface, a combustion chamber that generates combustion gas by burning the oxidizing agent and the fuel injected from the injection device, a resonator communicatively connected with the combustion chamber via a communication passage, and a perforated plate provided in the communication passage.Type: ApplicationFiled: October 20, 2016Publication date: December 20, 2018Inventors: Mitsunori ISONO, Hiroyasu MANAKO, Shinichiro WATANABE, Hideto KAWASHIMA
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Publication number: 20180320634Abstract: An injection device, a combustor, and a rocket engine include a device main body partitioned into a fuel manifold and an oxidant manifold, and a plurality of injectors arranged at predetermined intervals in the device main body to inject fuel and oxidant into a combustion chamber, each of the injectors includes a LOx channel including a proximal end portion communicating with the oxidant manifold and a distal end portion communicating with the combustion chamber, a restrictor provided on the proximal end portion of the LOx channel and a GH2 channel including a proximal end portion communicating with the fuel manifold and a distal end portion communicating with the combustion chamber, and the restrictors have different shapes.Type: ApplicationFiled: October 20, 2016Publication date: November 8, 2018Inventors: Mitsunori ISONO, Kazufumi IKEDA, Hiroyasu MANAKO, Shinichiro WATANABE, Hideto KAWASHIMA
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Patent number: 10107501Abstract: An object is to realize combustion flame which can further reduce the amount of NOx generation. A combustor (14) includes a pilot nozzle (40); a plurality of main nozzles (44) arranged apart from the pilot nozzle (40) in the circumferential direction on the outer peripheral side of the pilot nozzle (40) and configured to perform premix combustion; a combustor basket (34) surrounding the pilot nozzle (40) and each main nozzle (44); an outlet outer ring (50) provided at a tip end of the combustor basket (34); and a combustion liner (36) fitted, at an inner surface thereof, onto the outer periphery of the combustor basket (34) and surrounding the outlet outer ring (50). The outlet outer ring (50) is formed parallel to an inner wall surface (66) of the combustion liner (36).Type: GrantFiled: March 19, 2014Date of Patent: October 23, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Takiguchi, Mitsunori Isono, Atsushi Yuasa, Eisaku Ito, Shigemi Mandai
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Publication number: 20180187891Abstract: Provided are a combustor nozzle, a gas turbine combustor, a gas turbine, a cover ring, and a combustor nozzle manufacturing method. The combustor nozzle includes: a nozzle body provided with a fuel flow passage; a cover ring that is disposed on an outer side of the nozzle body so as to form air flow passages that allow air to jet out toward a front side; and fuel injection nozzles that are provided in a leading end part of the nozzle body at predetermined intervals in a circumferential direction and extend through the cover ring so as to be able to inject fuel from the fuel flow passage toward the front side.Type: ApplicationFiled: June 8, 2016Publication date: July 5, 2018Inventors: Masaki MITANI, Koshiro FUKUMOTO, Toshihiko SAITO, Mitsunori ISONO, Dai MORISHIGE, Nobuyuki IZUTSU, Hiroyuki YAMASAKI, Yoshiyuki WADA
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Patent number: 9933162Abstract: A combustor includes: a pilot burner; a plurality of main burners, each of which is provided radially and outwardly along a circumferential direction about the pilot burner, and including a main nozzle disposed in a main burner cylinder; and an extension tube provided to extend toward a downstream side from the main burner cylinder of each of the main burners. The extension tube has a circular inlet communicating with the main burner cylinder, and an outlet at the downstream side comprising two radial edges parallel to the radial direction and two circumferential edges formed along the circumferential direction so as to connect both ends of the radial edges. The combustor further includes an air passage formed outside of the main burner cylinder; and an inner communication hole (formed at the side of the inlet of the extension tube and at a position corresponding to the radially and inwardly circumferential edge for allowing communication between the air passage and the inside of the extension tube.Type: GrantFiled: January 10, 2014Date of Patent: April 3, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Kei Inoue, Keijiro Saito, Hikaru Katano, Sosuke Nakamura, Mitsunori Isono, Atsushi Yuasa
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Publication number: 20160273776Abstract: An object is to realize combustion flame which can further reduce the amount of NOx generation. A combustor (14) includes a pilot nozzle (40); a plurality of main nozzles (44) arranged apart from the pilot nozzle (40) in the circumferential direction on the outer peripheral side of the pilot nozzle (40) and configured to perform premix combustion; a combustor basket (34) surrounding the pilot nozzle (40) and each main nozzle (44); an outlet outer ring (50) provided at a tip end of the combustor basket (34); and a combustion liner (36) fitted, at an inner surface thereof, onto the outer periphery of the combustor basket (34) and surrounding the outlet outer ring (50). The outlet outer ring (50) is formed parallel to an inner wall surface (66) of the combustion liner (36).Type: ApplicationFiled: March 19, 2014Publication date: September 22, 2016Inventors: Satoshi TAKIGUCHI, Mitsunori ISONO, Atsushi YUASA, Eisaku ITO, Shigemi MANDAI
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Publication number: 20160032842Abstract: A combustor is provided with a plurality of fuel nozzles that extend in an axial direction of a combustor main body and are capable of injecting fuel from injection holes which are disposed on the combustion chamber side. The combustor is provided with a phase adjusting unit which partially changes the flow path cross-sectional area of at least one fuel nozzle in the axial direction such that phases of flow rate fluctuation of fuel do not match with respect to at least two fuel nozzles among the plurality of fuel nozzles.Type: ApplicationFiled: February 14, 2014Publication date: February 4, 2016Inventors: Mitsunori ISONO, Toshihiko SAITO, Kotaro MIYAUCHI
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Publication number: 20150362193Abstract: A combustor of the present invention includes: a pilot burner; a plurality of main burners (36), each of which is provided radially and outwardly along a circumferential direction about the pilot burner, and including a main nozzle (36a) disposed in a main burner cylinder (36A); an extension tube (36B) provided to extend toward a downstream side from the main burner cylinder of each of the main burners, the extension tube having a circular inlet (36Ba) communicating with the main burner cylinder, and an outlet (36Bb) at the downstream side comprising two radial edges (36Bc) parallel to the radial direction and two circumferential edges (36Bd) formed along the circumferential direction so as to connect both ends of the radial edges; an air passage (36E) formed outside of the main burner cylinder; and an inner communication hole (H1).Type: ApplicationFiled: January 10, 2014Publication date: December 17, 2015Inventors: Kei INOUE, Keijiro SAITO, Hikaru KATANO, Sosuke NAKAMURA, Mitsunori ISONO, Atsushi YUASA
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Publication number: 20130336439Abstract: In a neutron flux detector guiding apparatus, a cylindrical support column is erected on an upper core support plate of a nuclear reactor container main body, a plurality of guide thimble guiding tubes is provided inside the upper core support column between the upper core support plate and an upper core plate, a plurality of guide thimbles is extended from the support column into the guide thimble guiding tubes, the plurality of guide thimbles is supported by a support plate supported at one end part by the support column and erected at the other end part by a support leg above the upper core support plate, and an upper end part of the support plate is inclined downward from the support column side toward the support leg side, thereby realizing simplification of a structure.Type: ApplicationFiled: January 26, 2012Publication date: December 19, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Mitsunori Isono, Hideyuki Sakata, Kazuhiro Sasaki, Toshio Ichikawa, Teruyuki Nagano, Masaaki Okano