Patents by Inventor Yoji Kochi

Yoji Kochi 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).

  • Gas turbine combustor
    Patent number: 6327861
    Abstract: In a central portion of inner tube 28 of combustor 20, pilot fuel nozzle 22 and pilot cone 33 are arranged and main fuel nozzles 21 and main swirlers 32 therearound. Air intake portion (X-1) is provided with rectifier tube 11 for making air intake uniform. In air intake portion (X-2), air holes of appropriate number of pieces are provided in circumferential wall of the inner tube 28. In main swirler portion (X-3) and pilot cone portion (X-4), bolt joint of the main swirlers 32 is employed and optimized welded structure having less influence of thermal stress of the pilot swirler 33 is employed, respectively. Tail tube cooling portion (X-5) is provided with cooling structure having less influence of thermal stress to cool flange 71 portion of tail tube 24 uniformly. By the improvements in the portions (X-1) to (X-5), obstacles in attaining higher temperature in the combustor 20 is dissolved and combustor performance is enhanced.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: December 11, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshichika Sato, Yoji Kochi, Koichi Akagi, Kazuya Kobayashi, Koichi Nishida, Shinji Akamatsu, Hideki Haruta, Kotaro Miyauchi, Rintaro Chikami, Shigemi Mandai, Masataka Ota
  • Gas turbine combustor
    Publication number: 20010020364
    Abstract: In a central portion of inner tube 28 of combustor 20, pilot fuel nozzle 22 and pilot cone 33 are arranged and main fuel nozzles 21 and main swirlers 32 therearound. Air intake portion (X-1) is provided with rectifier tube 11 for making air intake uniform. In air intake portion (X-2), air holes of appropriate number of pieces are provided in circumferential wall of the inner tube 28. In main swirler portion (X-3) and pilot cone portion (X-4), bolt joint of the main swirlers 32 is employed and optimized welded structure having less influence of thermal stress of the pilot swirler 33 is employed, respectively. Tail tube cooling portion (X-5) is provided with cooling structure having less influence of thermal stress to cool flange 71 portion of tail tube 24 uniformly. By the improvements in the portions (X-1) to (X-5), obstacles in attaining higher temperature in the combustor 20 is dissolved and combustor performance is enhanced.
    Type: Application
    Filed: May 23, 2001
    Publication date: September 13, 2001
    Inventors: Yoshichika Sato, Yoji Kochi, Koichi Akagi, Kazuya Kobayashi, Koichi Nishida, Shinji Akamatsu, Hideki Haruta, Kotaro Miyauchi, Rintaro Chikami, Shigemi Mandai, Masataka Ota
  • Gas turbine combustor
    Patent number: 6282886
    Abstract: In a central portion of inner tube 28 of combustor 20, pilot fuel nozzle 22 and pilot cone 33 are arranged and main fuel nozzles 21 and main swirlers 32 therearound. Air intake portion (X-1) is provided with rectifier tube 11 for making air intake uniform. In air intake portion (X-2), air holes of appropriate number of pieces are provided in circumferential wall of the inner tube 28. In main swirler portion (X-3) and pilot cone portion (X-4), bolt joint of the main swirlers 32 is employed and optimized welded structure having less influence of thermal stress of the pilot swirler 33 is employed, respectively. Tail tube cooling portion (X-5) is provided with cooling structure having less influence of thermal stress to cool flange 71 portion of tail tube 24 uniformly. By the improvements in the portions (X-1) to (X-5), obstacles in attaining higher temperature in the combustor 20 is dissolved and combustor performance is enhanced.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: September 4, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshichika Sato, Yoji Kochi, Koichi Akagi, Kazuya Kobayashi, Koichi Nishida, Shinji Akamatsu, Hideki Haruta, Kotaro Miyauchi, Rintaro Chikami, Shigemi Mandai, Masataka Ota