Patents by Inventor Katsuhiko Sagae

Katsuhiko Sagae 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).

  • Patent number: 7251926
    Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: August 7, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
  • Patent number: 7100359
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: September 5, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Patent number: 7082748
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: August 1, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Publication number: 20060144034
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Application
    Filed: February 28, 2006
    Publication date: July 6, 2006
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Publication number: 20050097881
    Abstract: A plate-fin type regenerative heat exchanger is provided which can prevent clogging of a flow passage caused by a drift of liquid phase water even when compressed air contains a large amount of moisture and liquid droplets. The plate-fin type regenerative heat exchanger comprises a corrugated fin channel for heating compressed air containing liquid droplets and a corrugated fin channel to which the compressed air containing no liquid droplets is supplied. A pitch of fin members of the former corrugated fin channel is set to the Laplace length, whereby bridging of the liquid droplets between the fin members can be prevented.
    Type: Application
    Filed: June 24, 2004
    Publication date: May 12, 2005
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae, Hidefumi Araki
  • Publication number: 20050039436
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Application
    Filed: July 23, 2004
    Publication date: February 24, 2005
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Patent number: 6772596
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: August 10, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Patent number: 6718750
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: April 13, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Publication number: 20040065074
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 8, 2004
    Applicant: Hitachi, Limited
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Publication number: 20040040314
    Abstract: In a gas turbine, in which a compressor and a turbine are connected by means of a distant piece, the distant piece and a turbine first-stage disk 1 are connected by means of a joint portion. On the distant piece is formed a projection portion, and a spacer is held by means of a spigot portion. Thin portion is formed on an outer diameter side of the spacer, and is in contact with a fin of a turbine disk through a seal member. The turbine disk, the distant piece and the spacer define a cavity.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 4, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Nobuhiro Isobe, Katsuhiko Sagae
  • Publication number: 20030019214
    Abstract: A gas turbine installation which includes a compressor which compresses supplied air and discharges the same, a combustor which combusts the compressed air obtained from the compressor and fuel and produces combustion gas, a turbine which is driven by combustion gas provided from the combustor, a regenerative heat exchanger which heats all or a part of the compressed air being supplied from the compressor to the combustor by making use of the heat of the exhaust gas exhausted from the turbine and a plurality of water spraying devices which are provided at positions from an intake air chamber of the compressor to the outlet of low temperature side gas flow passage in the regenerative heat exchanger and is characterized in that the regenerative heat exchanger is constituted by connecting in series a plurality of heat exchangers having different heat transfer surface configurations.
    Type: Application
    Filed: February 25, 2002
    Publication date: January 30, 2003
    Inventors: Takanori Shibata, Shigeo Hatamiya, Nobuhiro Seiki, Tomomi Koganezawa, Katsuhiko Sagae
  • Publication number: 20020129361
    Abstract: An information service system in which information is collected, on a public communication network, from viewers who watch television programs and points are awarded to the viewers in accordance with the collected information, and which is constituted by an interest information generating portion for inputting individual audience result information generated as a result of the viewed television programs into information supply terminals existing on the public communication network to thereby generate individual interest information on the basis of the individual audience result information, an interest information input portion for receiving the individual interest information generated as a result of the viewed television programs from the information supply terminals, a file managing portion for managing an individual interest information file, and a point awarding portion for awarding points to the viewers in according to supply of the individual audience result information, and so on, from the viewers.
    Type: Application
    Filed: August 29, 2001
    Publication date: September 12, 2002
    Inventors: Setsuo Arita, Katsuhiko Sagae