Patents by Inventor Junichi Kitajima
Junichi Kitajima 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: 10775047Abstract: A combustor includes: a combustion liner having a combustion chamber formed therein; and a fuel injector mounted to a top portion of the combustion liner, and including a fuel injection member having a plurality of fuel injection annular portions and an air guide member including a plurality of combustion air annular portions that guide air for combustion. The fuel injection annular portions and the combustion air annular portions are arranged concentrically and alternately. The fuel injector injects fuel and air into the combustion chamber. Each of the fuel injection annular portions includes a plurality of fuel injection holes that are open in a radial direction thereof, and each of the combustion air annular portions includes a plurality of air guide grooves that are open in an axial direction thereof, and guide the air to the fuel jetted from the fuel injection holes.Type: GrantFiled: November 29, 2016Date of Patent: September 15, 2020Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, B&B AGEMA GmbHInventors: Atsushi Horikawa, Masahide Kazari, Kunio Okada, Junichi Kitajima, Harald Funke, Karsten Kusterer, Anis Haj Ayed
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Patent number: 10041417Abstract: The gas turbine system (GT) includes a combustor (2) having a fuel injection nozzle assembly (4) for jetting hydrogen gas (H) and pure water (W), a reservoir (12) for pooling the pure water (W) to be supplied to the combustor (2), a gas compressing device (10) for boosting the hydrogen gas (H) to be supplied to the combustor (2), a fuel supply passage (6) for guiding the boosted hydrogen gas (H) towards the combustor (2), and a pressurizing passage (16) communicating between the reservoir (12) and the fuel supply passage (6) for pressurizing the pure water (W) by means of the boosted hydrogen gas (H).Type: GrantFiled: October 29, 2012Date of Patent: August 7, 2018Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsushi Horikawa, Masahide Kazari, Hiroyuki Kashihara, Junichi Kitajima
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Publication number: 20170082291Abstract: A combustor includes: a combustion liner having a combustion chamber formed therein; and a fuel injector mounted to a top portion of the combustion liner, and including a fuel injection member having a plurality of fuel injection annular portions and an air guide member including a plurality of combustion air annular portions that guide air for combustion. The fuel injection annular portions and the combustion air annular portions are arranged concentrically and alternately. The fuel injector injects fuel and air into the combustion chamber. Each of the fuel injection annular portions includes a plurality of fuel injection holes that are open in a radial direction thereof, and each of the combustion air annular portions includes a plurality of air guide grooves that are open in an axial direction thereof, and guide the air to the fuel jetted from the fuel injection holes.Type: ApplicationFiled: November 29, 2016Publication date: March 23, 2017Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, B&B AGEMA GmbHInventors: Atsushi HORIKAWA, Masahide KAZARI, Kunio OKADA, Junichi KITAJIMA, Harald FUNKE, Karsten KUSTERER, Anis Haj AYED
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Publication number: 20170074521Abstract: A combustor includes: a combustion liner having a combustion chamber formed therein; a fuel injector mounted to a top portion of the combustion liner, and including a fuel injection member having a plurality of fuel injection annular portions and an air guide member including a plurality of combustion air annular portions that guide air for combustion; and a supplemental burner. The fuel injection annular portions and the combustion air annular portions are arranged concentrically and alternately. The fuel injector injects fuel and air into the combustion chamber. Each of the fuel injection annular portions includes a plurality of fuel injection holes that are open in a radial direction thereof, and each of the combustion air annular portions includes a plurality of air guide groove that are open in an axial direction thereof, and guide the air to the fuel jetted from the fuel injection holes.Type: ApplicationFiled: November 29, 2016Publication date: March 16, 2017Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsushi HORIKAWA, Masahide KAZARI, Kunio OKADA, Junichi KITAJIMA
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Publication number: 20140283498Abstract: The gas turbine system (GT) includes a combustor (2) having a fuel injection nozzle assembly (4) for jetting hydrogen gas (H) and pure water (W), a reservoir (12) for pooling the pure water (W) to be supplied to the combustor (2), a gas compressing device (10) for boosting the hydrogen gas (H) to be supplied to the combustor (2), a fuel supply passage (6) for guiding the boosted hydrogen gas (H) towards the combustor (2), and a pressurizing passage (16) communicating between the reservoir (12) and the fuel supply passage (6) for pressurizing the pure water (W) by means of the boosted hydrogen gas (H).Type: ApplicationFiled: October 29, 2012Publication date: September 25, 2014Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsushi Horikawa, Masahide Kazari, Hiroyuki Kashihara, Junichi Kitajima
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Patent number: 8172568Abstract: A combustor, in which a flame holding region is formed at a location distant from a pilot burner to avoid burnout of the pilot burner and in which flame holding capability is increased to use a lean pre-mix gas for reducing NOx emission, is provided. The combustor includes a combustion liner having a cylindrical side wall that defines a combustion chamber; and a main burner positioned at a top portion of the combustion liner for injecting an annular pre-mix gas into the combustion chamber to form a reverse flow region at a downstream portion thereof, which region is oriented towards the top portion of the combustion chamber along a longitudinal axis. In this combustor, a pilot burner is arranged at the top portion for injecting a mixture of fuel and air only in a direction confronting the reverse flow region.Type: GrantFiled: February 4, 2010Date of Patent: May 8, 2012Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Hiroyuki Kashihara, Yasushi Yoshino, Kiyoshi Matsumoto, Takeshi Kimura, Junichi Kitajima, Atsushi Horikawa
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Publication number: 20100136496Abstract: A combustor, in which a flame holding region is formed at a location distant from a pilot burner to avoid burnout of the pilot burner and in which flame holding capability is increased to use a lean pre-mix gas for reducing NOx emission, is provided. The combustor includes a combustion liner having a cylindrical side wall that defines a combustion chamber; and a main burner positioned at a top portion of the combustion liner for injecting an annular pre-mix gas into the combustion chamber to form a reverse flow region at a downstream portion thereof, which region is oriented towards the top portion of the combustion chamber along a longitudinal axis. In this combustor, a pilot burner is arranged at the top portion for injecting a mixture of fuel and air only in a direction confronting the reverse flow region.Type: ApplicationFiled: February 4, 2010Publication date: June 3, 2010Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hiroyuki KASHIHARA, Yasushi YOSHINO, Kiyoshi MATSUMOTO, Takeshi KIMURA, Junichi KITAJIMA, Atsushi HORIKAWA
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Patent number: 7563527Abstract: A fuel cell-atmospheric-pressure turbine hybrid system uses the thermal energy of a cell exhaust gas discharged from an atmospheric-pressure, high-temperature fuel cell effectively, does not need any additional emergency protective device, and enables the use of lightweight, easy-to-process structural and piping materials to reduces the cost. The fuel cell-atmospheric-pressure turbine hybrid system includes: a combustor 2 for burning an exhaust gas G1 discharged from an atmospheric-pressure, high-temperature fuel cell 1; a turbine 3 in which a combustion gas G2 discharged from the combustor 2 expands and the pressure of the combustion gas G2 drops to a negative pressure; a compressor 4 for compressing an exhaust gas G3 discharged from the turbine 3 to increase the pressure of the exhaust gas G3; and a heat exchanger 5 for transferring heat from the high-temperature exhaust gas G3 discharged from the turbine 3 to low-temperature air A to be supplied to the fuel cell 1.Type: GrantFiled: June 29, 2004Date of Patent: July 21, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kazuo Tanaka, Eiichi Harada, Takatoshi Shoji, Junichi Kitajima, Seiji Yamashita
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Publication number: 20060222919Abstract: A fuel cell-atmospheric-pressure turbine hybrid system uses the thermal energy of a cell exhaust gas discharged from an atmospheric-pressure, high-temperature fuel cell effectively, does not need any additional emergency protective device, and enables the use of lightweight, easy-to-process structural and piping materials to reduces the cost. The fuel cell-atmospheric-pressure turbine hybrid system includes: a combustor 2 for burning an exhaust gas G1 discharged from an atmospheric-pressure, high-temperature fuel cell 1; a turbine 3 in which a combustion gas G2 discharged from the combustor 2 expands and the pressure of the combustion gas G2 drops to a negative pressure; a compressor 4 for compressing an exhaust gas G3 discharged from the turbine 3 to increase the pressure of the exhaust gas G3; and a heat exchanger 5 for transferring heat from the high-temperature exhaust gas G3 discharged from the turbine 3 to low-temperature air A to be supplied to the fuel cell 1.Type: ApplicationFiled: June 29, 2004Publication date: October 5, 2006Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Kazuo Tanaka, Eiichi Harada, Takatoshi Shoji, Junichi Kitajima, Seiji Yamashita
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Patent number: 4129985Abstract: A combustor device of a gas turbine engine, which combustor device is supplied with compressed air from a compressor and delivers combustion gas to a turbine, comprises an outer casing and an inner casing defining therein a combustion chamber and forming between the outer and inner casings an annular passage for the intake of the compressed air, a swirler opening being provided at the innermost end of the inner casing for taking the compressed air into the combustion chamber. Swirling motion of the compressed air around the inlet of the swirler opening, which causes static pressure drop at the swirler opening inlet and resultant undesirable combustion, is effectively prevented by providing swirl preventing vanes between the inner and outer casings.Type: GrantFiled: November 9, 1976Date of Patent: December 19, 1978Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Shinichi Kajita, Kenji Mori, Junichi Kitajima