Patents by Inventor Kazuo Shimodaira
Kazuo Shimodaira 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: 9429324Abstract: A fuel injector includes: a pilot injector configured to spray fuel so as to form a first combustion region in a combustion chamber; and a main injector provided coaxially with the pilot injector so as to surround the pilot injector and configured to supply a fuel-air mixture that is a mixture of the fuel and air to form a second combustion region in the combustion chamber, wherein the main injector includes: a first inflow channel through which the air having a major flow component in an axial direction is taken; a second inflow channel through which the air having a major flow component in a radial direction is taken and which causes the air therein to meet the air from the first inflow channel; and a main fuel injecting portion configured to inject the fuel only to the second inflow channel.Type: GrantFiled: May 31, 2012Date of Patent: August 30, 2016Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Japan Aerospace Exploration AgencyInventors: Ryusuke Matsuyama, Masayoshi Kobayashi, Takeo Oda, Atsushi Horikawa, Shigeru Hayashi, Kazuo Shimodaira, Kazuaki Matsuura, Hideshi Yamada, Youji Kurosawa, Hitoshi Fujiwara
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Patent number: 9366442Abstract: A fuel injector includes: a pilot injector configured to spray fuel so as to form a first combustion region in a combustion chamber; and a main injector provided coaxially with the pilot injector so as to surround the pilot injector and configured to supply a fuel-air mixture that is a mixture of the fuel and air to form a second combustion region in the combustion chamber, wherein the pilot injector includes: a center nozzle configured to eject air jet flowing straight in an axial direction on a central axis of the pilot injector; an inside swirler provided on a radially outer side of the center nozzle and configured to cause inflow air to swirl around the central axis; and a pilot fuel injecting portion configured to inject the fuel from between the center nozzle and the inside swirler to air flow in the center nozzle.Type: GrantFiled: May 31, 2012Date of Patent: June 14, 2016Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Japan Aerospace Exploration AgencyInventors: Ryusuke Matsuyama, Masayoshi Kobayashi, Takeo Oda, Atsushi Horikawa, Shigeru Hayashi, Kazuo Shimodaira, Kazuaki Matsuura, Hideshi Yamada, Youji Kurosawa, Hitoshi Fujiwara
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Patent number: 8951039Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.Type: GrantFiled: October 9, 2009Date of Patent: February 10, 2015Assignee: Japan Aerospace Exploration AgencyInventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
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Patent number: 8327643Abstract: A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.Type: GrantFiled: May 28, 2010Date of Patent: December 11, 2012Assignee: Japan Aerospace Exploration AgencyInventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
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Publication number: 20120304649Abstract: A fuel injector includes: a pilot injector configured to spray fuel so as to form a first combustion region in a combustion chamber; and a main injector provided coaxially with the pilot injector so as to surround the pilot injector and configured to supply a fuel-air mixture that is a mixture of the fuel and air to form a second combustion region in the combustion chamber, wherein the main injector includes: a first inflow channel through which the air having a major flow component in an axial direction is taken; a second inflow channel through which the air having a major flow component in a radial direction is taken and which causes the air therein to meet the air from the first inflow channel; and a main fuel injecting portion configured to inject the fuel only to the second inflow channel.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Applicants: JAPAN AEROSPACE EXPLORATION AGENCY, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryusuke MATSUYAMA, Masayoshi KOBAYASHI, Takeo ODA, Atsushi HORIKAWA, Shigeru HAYASHI, Kazuo SHIMODAIRA, Kazuaki MATSUURA, Hideshi YAMADA, Youji KUROSAWA, Hitoshi FUJIWARA
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Publication number: 20120305673Abstract: A fuel injector includes: a pilot injector configured to spray fuel so as to form a first combustion region in a combustion chamber; and a main injector provided coaxially with the pilot injector so as to surround the pilot injector and configured to supply a fuel-air mixture that is a mixture of the fuel and air to form a second combustion region in the combustion chamber, wherein the pilot injector includes: a center nozzle configured to eject air jet flowing straight in an axial direction on a central axis of the pilot injector; an inside swirler provided on a radially outer side of the center nozzle and configured to cause inflow air to swirl around the central axis; and a pilot fuel injecting portion configured to inject the fuel from between the center nozzle and the inside swirler to air flow in the center nozzle.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Applicants: JAPAN AEROSPACE EXPLORATION AGENCY, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryusuke Matsuyama, Masayoshi Kobayashi, Takeo Oda, Atsushi Horikawa, Shigeru Hayashi, Kazuo Shimodaira, Kazuaki Matsuura, Hideshi Yamada, Youji Kurosawa, Hitoshi Fujiwara
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Publication number: 20100308135Abstract: A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.Type: ApplicationFiled: May 28, 2010Publication date: December 9, 2010Applicant: JAPAN AEROSPACE EXPLORATION AGENCYInventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
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Publication number: 20100092901Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.Type: ApplicationFiled: October 9, 2009Publication date: April 15, 2010Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
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Patent number: 6951097Abstract: Disclosed is a burner apparatus comprising an inner tube defining a second channel and an outer tube defining a first channel surrounding the inner tube, air supplying means for supplying air to the first channel and the second channel, and gas supplying means for supplying fuel gas to the first channel and the second channel, either the first channel or the second channel being used as a main combustion channel and the other being used as a pilot combustion channel, the main combustion channel and the pilot combustion channel receiving the supply of fuel gas for combusting it. A plurality of first supply openings for supplying the fuel gas into the main combustion channel are distributed in the main combustion channel in a direction away from the pilot combustion channel. Discharging resistance of the fuel gas from each first supply opening due to passage of the oxygen-containing gas is set so as to increase as being distant from the pilot combustion channel.Type: GrantFiled: January 20, 2004Date of Patent: October 4, 2005Assignee: Osaka Gas Co., Ltd.Inventors: Koji Moriya, Tsutomu Wakabayashi, Takahiro Sako, Yuji Nakamura, Shonosuke Koga, Masamichi Ippommatsu, Seiichi Ito, Kazuo Suzuki, Kazuo Shimodaira
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Publication number: 20050037305Abstract: In the present invention, in a burner apparatus comprising an inner tube (2) defining a second channel (A2) and an outer tube (3) defining a first channel (A1) surrounding the inner tube (2), air supplying means for supplying air to the first channel (A1) and the second channel (A2), and gas supplying means for supplying fuel gas G to the first channel (A1) and the second channel (A2), either the first channel (A1) or the second channel (A2) being used as a main combustion channel and the other being used as a pilot combustion channel, the main combustion channel and the pilot combustion channel receiving the supply of fuel gas (G) for combusting it, said gas supplying means includes a plurality of fluid distributors (4) arranged in dispersion in a peripheral direction of the main combustion channel and the pilot combustion channel, each fluid distributor (4) including a first supply opening (5) for supplying the fuel gas G into the main combustion channel, a supply line (6) for supplying the fuel gas G preseType: ApplicationFiled: January 20, 2004Publication date: February 17, 2005Inventors: Koji Moriya, Tsutomu Wakabayashi, Takahiro Sako, Yuji Nakamura, Shonosuke Koga, Masamichi Ippommatsu, Seiichi Ito, Kazuo Suzuki, Kazuo Shimodaira
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Patent number: 6684641Abstract: A fluid distributor includes a first feed port for feeding fuel gas into a main fuel flow path, a feed path for feeding the fuel gas inside a gas flow path to the first feed port, and distributedly into a pilot fuel flow path so as to increase the distribution ratio of the fuel gas to the first feed port according to an increase in an overall feed flow rate of the fuel gas from the gas flow path to a feed path and, inversely, to decrease the distribution ratio of the fuel gas to the first feed port according to a decrease in the overall feed flow rate. A plurality of fluid distributors are disposed in the main fuel flow path and pilot fuel flow path distributedly in the peripheral direction to constitute a gas feed means.Type: GrantFiled: June 14, 2002Date of Patent: February 3, 2004Assignee: Osaka Gas Co., Ltd.Inventors: Koji Moriya, Tsutomu Wakabayashi, Takahiro Sako, Yuji Nakamura, Shonosuke Koga, Masamichi Ippommatsu, Seiichi Ito, Kazuo Suzuki, Kazuo Shimodaira
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Publication number: 20020192615Abstract: In the present invention, in a burner apparatus comprising an inner tube (2) defining a second channel (A2) and an outer tube (3) defining a first channel (A1) surrounding the inner tube (2), air supplying means for supplying air to the first channel (A1) and the second channel (A2), and gas supplying means for supplying fuel gas G to the first channel (A1) and the second channel (A2), either the first channel (A1) or the second channel (A2) being used as a main combustion channel and the other being used as a pilot combustion channel, the main combustion channel and the pilot combustion channel receiving the supply of fuel gas (G) for combusting it, said gas supplying means includes a plurality of fluid distributors (4) arranged in dispersion in a peripheral direction of the main combustion channel and the pilot combustion channel, each fluid distributor (4) including a first supply opening (5) for supplying the fuel gas G into the main combustion channel, a supply line (6) for supplying the fuel gas G preseType: ApplicationFiled: June 14, 2002Publication date: December 19, 2002Inventors: Koji Moriya, Tsutomu Wakabayashi, Takahiro Sako, Yuji Nakamura, Shonosuke Koga, Masamichi Ippommatsu, Seiichi Ito, Kazuo Suzuki, Kazuo Shimodaira