Patents by Inventor Shouichi Kai

Shouichi Kai 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).

  • Pulverized fuel combustion burner
    Patent number: 6024030
    Abstract: A burner for combustion of a pulverized coal mixture having two kinds of rich and lean concentration has a height of a burner panel reduced and the overall burner simplified. A rich/lean separator (10, 20, 30) is provided within a pulverized coal conduit (2) so that a high concentration mixture is formed in an outer peripheral portion and a low concentration mixture is formed in a central portion within a single pulverized coal conduit. Thus, a rich mixture burner and a lean mixture burner, which have been conventionally provided separately, may be formed into a single burner. Recirculation of air is accelerated by a cutaway slit (20d, 30d) provided in a central portion of the rich/lean separator to make the air flow rate distribution uniform in a pulverized coal nozzle. Also, a duct and an air blow box for the combustion air to be supplied to the pulverized coal flame are not integrally formed continuous in the height direction, but are divided into a plurality of discontinuous units.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: February 15, 2000
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Akiyasu Okamoto, Kimishiro Tokuda, Koutaro Fujimura, Hachiro Kawashima, Shouichi Kai, Tadashi Gengo, Kouichi Sakamoto
  • Pulverized fuel combustion burner having rich/lean separator
    Patent number: 5842426
    Abstract: A burner for combustion of a pulverized coal mixture having two kinds of rich and lean concentration has, a height of a burner panel reduced and the overall burner simplified. A rich/lean separator (10, 20, 30) is provided within a pulverized coal conduit (2) so that a high concentration mixture is formed in an outer peripheral portion and a low concentration mixture is formed in a central portion within a single pulverized coal conduit. Thus, a rich mixture burner and a lean mixture burner, which have been conventionally provided separately, may be formed into a single burner. Recirculation of air is accelerated by a cutaway slit (20d, 30d) provided in a central portion of the rich/lean separator to make the air flow rate distribution uniform in a pulverized coal nozzle. Also, a duct and an air blow box for the combustion air to be supplied to the pulverized coal flame are not integrally formed continuous in the height direction, but are divided into a plurality of discontinuous units.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: December 1, 1998
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideaki Ohta, Akiyasu Okamoto, Kimishiro Tokuda, Koutaro Fujimura, Hachiro Kawashima, Shouichi Kai, Tadashi Gengo, Kouichi Sakamoto, Mutsuo Kuragasaki
  • Pulverized fuel combustion burner having a flame maintaining plate at a tip end portion of a pulverized fuel conduit
    Patent number: 5829367
    Abstract: A burner for combustion of a pulverized coal mixture having two kinds of rich and lean concentration has a height of a burner panel reduced and the overall burner simplified. A rich/lean separator (10, 20, 30) is provided within a pulverized coal conduit (2) so that a high concentration mixture is formed in an outer peripheral portion and a low concentration mixture is formed in a central portion within a single pulverized coal conduit. Thus, a rich mixture burner and a lean mixture burner, which have been conventionally provided separately, may be formed into a single burner. Recirculation of air is accelerated by a cutaway slit (20d, 30d) provided in a central portion of the rich/lean separator to make the air flow rate distribution uniform in a pulverized coal nozzle. Also, a duct and an air blow box for the combustion air to be supplied to the pulverized coal flame are not integrally formed continuous in the height direction, but are divided into a plurality of discontinuous units.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: November 3, 1998
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideaki Ohta, Akiyasu Okamoto, Kimishiro Tokuda, Koutaro Fujimura, Hachiro Kawashima, Shouichi Kai, Tadashi Gengo, Kouichi Sakamoto, Mutsuo Kuragasaki