Patents by Inventor Nariyoshi Kobayashi
Nariyoshi Kobayashi 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: 8596070Abstract: A combustor and a combustion method for the combustor, which can suppress backfire and ensure stable combustion. The combustor comprises a mixing-chamber forming member for forming therein a mixing chamber in which air for combustion and fuel are mixed with each other, and a combustion chamber for burning a gas mixture mixed in the mixing chamber and producing combustion gases. A channel for supplying the air for combustion to the mixing chamber from the outer peripheral side of the mixing-chamber forming member is provided inside the mixing-chamber forming member. The fuel and the air are premixed in the channel, and a resulting premixed gas mixture is supplied to the mixing chamber.Type: GrantFiled: October 1, 2009Date of Patent: December 3, 2013Assignee: Hitachi, Ltd.Inventors: Shouhei Yoshida, Yoshitaka Hirata, Hiroshi Inoue, Tomoya Murota, Toshifumi Sasao, Nariyoshi Kobayashi
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Patent number: 8445154Abstract: The present invention provides a fuel cell power system, in which a combustion exhaust gas having a high temperature and generated by the combustion reaction of unreacted fuel gas and oxidizer gas which are not utilized in a power-generating reaction is introduced into a gas header for distributing the fuel gas or the oxidizer gas to a plurality of fuel cells contained in a fuel cell body, in such a way that a larger amount of heat is transferred to the gas which is to be supplied to the cells disposed in a peripheral area of the fuel cell body by heat exchange, and a smaller amount of the heat is transferred to the gas which is to be supplied to the cells disposed in a central area of the fuel cell body.Type: GrantFiled: June 29, 2007Date of Patent: May 21, 2013Assignee: Hitachi, Ltd.Inventors: Tadashi Yoshida, Hiromi Tokoi, Kazuo Takahashi, Shin Takahashi, Akihiko Noie, Akira Gunji, Nariyoshi Kobayashi
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Patent number: 8247129Abstract: A fuel cell provided with a reforming catalyst is located in a high-temperature portion on the anode side to cool the high-temperature portion by means of heat absorption of reforming reaction, or a combustion catalyst is provided in a low-temperature portion on the anode side to heat the low-temperature portion by means of heat generation of combustion reaction, or both of the catalysts are provided, by which the occurrence of variations in temperature in a cell reaction region of anode is prevented.Type: GrantFiled: August 17, 2005Date of Patent: August 21, 2012Assignee: Hitachi, Ltd.Inventors: Hiromi Tokoi, Nariyoshi Kobayashi, Shin Takahashi
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Patent number: 8206867Abstract: A flat tube double-sided power generation type fuel cell is comprised of the combination of one or more of the following means (1) and (2). That is, means (1) for optimizing the constitution of an current-collecting electrode thereby making the flow of fuel or air uniform over the entire region, and means (2) for dividing the current-collecting electrode into two regions thereby shunting the flow of the fuel into a flow directing to the anode of the cell and a flow directly directing to the downstream, for increasing the power generation amount in the cell, the means being applicable also to a cell of a cylindrical shape.Type: GrantFiled: January 25, 2007Date of Patent: June 26, 2012Assignee: Hitachi, Ltd.Inventors: Hiromi Tokoi, Nariyoshi Kobayashi, Kazuo Takahashi, Tadashi Yoshida, Akihiko Noie, Shin Takahashi, Akira Gunji
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Patent number: 7972742Abstract: It is an object to shorten current path between an anode and a cathode in a tube type SOFC and thereby to decrease resistance. The tube type fuel cell contains a tube type electrolyte placed between an anode and a cathode, wherein an auxiliary electrode is provided over the entire region of a cell reaction region on at least one of the anode and cathode. The current path is shortened and resistance is decreased, because the anode auxiliary electrode or cathode auxiliary electrode is provided over the entire peripheral surface of the anode or cathode, and the current path in the auxiliary electrode has a greatly increased cross-sectional area.Type: GrantFiled: August 17, 2006Date of Patent: July 5, 2011Assignee: Hitachi, Ltd.Inventors: Hiromi Tokoi, Shin Takahashi, Akira Gunji, Nariyoshi Kobayashi
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Publication number: 20100170248Abstract: A combustor and a combustion method for the combustor, which can suppress backfire and ensure stable combustion. The combustor comprises a mixing-chamber forming member for forming therein a mixing chamber in which air for combustion and fuel are mixed with each other, and a combustion chamber for burning a gas mixture mixed in the mixing chamber and producing combustion gases. A channel for supplying the air for combustion to the mixing chamber from the outer peripheral side of the mixing-chamber forming member is provided inside the mixing-chamber forming member. The fuel and the air are premixed in the channel, and a resulting premixed gas mixture is supplied to the mixing chamber.Type: ApplicationFiled: October 1, 2009Publication date: July 8, 2010Inventors: Shouhei YOSHIDA, Yoshitaka Hirata, Hiroshi Inoue, Tomoya Murota, Toshifumi Sasao, Nariyoshi Kobayashi
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Patent number: 7610759Abstract: A combustor and a combustion method for the combustor, which can suppress backfire and ensure stable combustion. The combustor comprises a mixing-chamber forming member for forming therein a mixing chamber in which air for combustion and fuel are mixed with each other, and a combustion chamber for burning a gas mixture mixed in the mixing chamber and producing combustion gases. A channel for supplying the air for combustion to the mixing chamber from the outer peripheral side of the mixing-chamber forming member is provided inside the mixing-chamber forming member. The fuel and the air are premixed in the channel, and a resulting premixed gas mixture is supplied to the mixing chamber.Type: GrantFiled: October 4, 2005Date of Patent: November 3, 2009Assignee: Hitachi, Ltd.Inventors: Shouhei Yoshida, Yoshitaka Hirata, Hiroshi Inoue, Tomoya Murota, Toshifumi Sasao, Nariyoshi Kobayashi
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Patent number: 7581379Abstract: The plant includes a gaseous fuel processing apparatus for pre-processing natural gas (gaseous fuel) produced in the gas field, a liquid fuel processing apparatus for pre-processing liquid fuel obtained during the extraction and refining process of the natural gas, and a gas turbine. The gas turbine includes a compressor for generating compressed air, a combustor for mixing the compressed air from the compressor with one or both of the gaseous fuel pre-processed by the gaseous fuel processing apparatus and the liquid fuel pre-processed by the liquid fuel processing apparatus, and for burning a gas mixture, and a turbine for driving a generator by combustion gases supplied from the combustor.Type: GrantFiled: November 3, 2005Date of Patent: September 1, 2009Assignee: Hitachi, Ltd.Inventors: Shouhei Yoshida, Yoshitaka Hirata, Hiroshi Inoue, Nariyoshi Kobayashi
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Publication number: 20090173057Abstract: The plant includes a gaseous fuel processing apparatus for pre-processing natural gas (gaseous fuel) produced in the gas field, a liquid fuel processing apparatus for pre-processing liquid fuel obtained during the extraction and refining process of the natural gas, and a gas turbine. The gas turbine includes a compressor for generating compressed air, a combustor for mixing the compressed air from the compressor with one or both of the gaseous fuel pre-processed by the gaseous fuel processing apparatus and the liquid fuel pre-processed by the liquid fuel processing apparatus, and for burning a gas mixture, and a turbine for driving a generator by combustion gases supplied from the combustor.Type: ApplicationFiled: November 3, 2005Publication date: July 9, 2009Inventors: Shouhei Yoshida, Yoshitaka Hirata, Hiroshi Inoue, Nariyoshi Kobayashi
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Publication number: 20080085432Abstract: In a solid oxide fuel cell module (1) incorporating a burner (6) not only in an oxidizer side burner (5) of the module (1) but also in a fuel side, directly heating from both sides by a combustion gas, and starting for a short time, a combustion state of the fuel side burner is kept well, and a short-time start is securely achieved. A cooling piping (17) is provided in a burner main body (61) and a premixing chamber (62) of the fuel side burner (6), and is connected to a heat recovery system (16) so as to supply a cooling medium, thereby cooling the fuel side burner (6). Further, a heat held by the cooling medium is recovered by a heat exchanger (18) connected to an outlet side of the heat recovery system (16). A back fire (an abnormal combustion) of the burner is prevented, the module is uniformly heated, and a secure short-time start is achieved, by cooling the fuel side burner (6) so as to adjust temperature. Further, a combined efficiency of the module is improved by utilizing the recovered surplus heat.Type: ApplicationFiled: January 25, 2007Publication date: April 10, 2008Inventors: Akihiko Noie, Nariyoshi Kobayashi, Hiromi Tokoi, Kazuo Takahashi, Tadashi Yoshida, Shin Takahashi, Akira Gunji
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Patent number: 7343745Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: GrantFiled: May 25, 2005Date of Patent: March 18, 2008Assignee: Hitachi, Ltd.Inventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Publication number: 20080014485Abstract: The present invention provides a fuel cell power system, in which a combustion exhaust gas having a high temperature and generated by the combustion reaction of unreacted fuel gas and oxidizer gas which are not utilized in a power-generating reaction is introduced into a gas header for distributing the fuel gas or the oxidizer gas to a plurality of fuel cells contained in a fuel cell body, in such a way that a larger amount of heat is transferred to the gas which is to be supplied to the cells disposed in a peripheral area of the fuel cell body by heat exchange, and a smaller amount of the heat is transferred to the gas which is to be supplied to the cells disposed in a central area of the fuel cell body.Type: ApplicationFiled: June 29, 2007Publication date: January 17, 2008Inventors: Tadashi Yoshida, Hiromi Tokoi, Kazuo Takahashi, Shin Takahashi, Akihiko Noie, Akira Gunji, Nariyoshi Kobayashi
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Publication number: 20080008922Abstract: A flattened tube double-sided power generation type fuel cell is comprised of the combination of one or more of the following means (1) and (2). That is, means (1) for optimizing the constitution of an current-collecting electrode thereby making the flow of fuel or air uniform over the entire region, and means (2) for dividing the current-collecting electrode into two regions thereby shunting the flow of the fuel into a flow directing to the anode of the cell and a flow directly directing to the downstream, for increasing the power generation amount in the cell, the means being applicable also to a cell of a cylindrical shape.Type: ApplicationFiled: January 25, 2007Publication date: January 10, 2008Inventors: Hiromi Tokoi, Nariyoshi Kobayashi, Kazuo Takahashi, Tadashi Yoshida, Akihiko Noie, Shin Takahashi, Akira Gunji
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Patent number: 7313919Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: GrantFiled: February 24, 2004Date of Patent: January 1, 2008Assignee: Hitachi, Ltd.Inventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Patent number: 7200998Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: GrantFiled: May 25, 2005Date of Patent: April 10, 2007Assignee: Hitachi, Ltd.Inventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Patent number: 7188476Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: GrantFiled: May 25, 2005Date of Patent: March 13, 2007Assignee: Hitachi, LtdInventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Publication number: 20070048578Abstract: It is an object to shorten current path between an anode and a cathode in a tube type SOFC and thereby to decrease resistance. The tube type fuel cell contains a tube type electrolyte placed between an anode and a cathode, wherein an auxiliary electrode is provided over the entire region of a cell reaction region on at least one of the anode and cathode. The current path is shortened and resistance is decreased, because the anode auxiliary electrode or cathode auxiliary electrode is provided over the entire peripheral surface of the anode or cathode, and the current path in the auxiliary electrode has a greatly increased cross-sectional area.Type: ApplicationFiled: August 17, 2006Publication date: March 1, 2007Inventors: Hiromi Tokoi, Shin Takahashi, Akira Gunji, Nariyoshi Kobayashi
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Patent number: 7117677Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: GrantFiled: July 28, 2004Date of Patent: October 10, 2006Assignee: Hitachi, Ltd.Inventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Publication number: 20060042264Abstract: A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.Type: ApplicationFiled: May 25, 2005Publication date: March 2, 2006Inventors: Hiroshi Inoue, Tomomi Koganezawa, Nariyoshi Kobayashi, Isao Takehara
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Publication number: 20060040153Abstract: In a solid oxide fuel cell, the nonuniformity of temperature distribution in the axial direction of a solid electrolyte, the decrease in cell performance caused by a decreased effective cell reaction area, and the damage to cell due to thermal stress generated by a temperature difference are restrained. A reforming catalyst is provided in a high-temperature portion on the anode side to cool the high-temperature portion by means of heat absorption of reforming reaction, or a combustion catalyst is provided in a low-temperature portion on the anode side to heat the low-temperature portion by means of heat generation of combustion reaction, or both of the catalysts are provided, by which the occurrence of variations in temperature in a cell reaction region of anode is prevented.Type: ApplicationFiled: August 17, 2005Publication date: February 23, 2006Inventors: Hiromi Tokoi, Nariyoshi Kobayashi, Shin Takahashi