Patents by Inventor Sadayuki Muto

Sadayuki Muto 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).

  • Upside-down type low NOx boiler
    Patent number: 9958153
    Abstract: In a low NOx boiler of the present invention, a high-temperature reductive combustion zone is provided to an upper portion of a rectangular combustion chamber, and a second-step combustion zone is provided to a middle stage of the combustion chamber. A wall provided below the second-step combustion zone is tapered to narrow the combustion chamber, with a taper angle of approximately 35° or so, relative to a vertical line. An ash discharge port is provided to a furnace bottom portion, and a gas outlet port communicated with a rear pass is provided to a lower side face of the second-step combustion zone. This rear pass is connected with a further post-treatment step, via a super-heater tube and an economizer.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: May 1, 2018
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Nobuo Suemitsu, Sadayuki Muto, Shinichi Toda, Minoru Igarashi
  • UPSIDE-DOWN TYPE LOW NOX BOILER
    Publication number: 20110197829
    Abstract: In a low NOx boiler of the present invention, a high-temperature reductive combustion zone is provided to an upper portion of a rectangular combustion chamber, and a second-step combustion zone is provided to a middle stage of the combustion chamber. A wall provided below the second-step combustion zone is tapered to narrow the combustion chamber, with a taper angle of approximately 35° or so, relative to a vertical line. An ash discharge port is provided to a furnace bottom portion, and a gas outlet port communicated with a rear pass water wall is provided to a lower side face of the second-step combustion zone. This rear pass water wall is connected with a further post-treatment step, via a super-heater tube and an economizer.
    Type: Application
    Filed: December 8, 2009
    Publication date: August 18, 2011
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Nobuo Suemitsu, Sadayuki Muto, Shinichi Toda, Minoru Igarashi