The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Jul. 08, 2014
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Kenji Kiyama, Kanagawa, JP;
Miki Shimogori, Kanagawa, JP;
Toshihiko Mine, Kanagawa, JP;
Satoshi Tadakuma, Kanagawa, JP;
Kenichi Ochi, Kanagawa, JP;
Koji Kuramashi, Kanagawa, JP;
Yusuke Ochi, Kanagawa, JP;
Akira Baba, Kanagawa, JP;
Yuki Kondo, Kanagawa, JP;
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Abstract
In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.