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:
Mar. 21, 2017
Filed:
Aug. 09, 2013
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Toshihiko Mine, Hiroshima, JP;
Kenji Kiyama, Hiroshima, JP;
Miki Shimogori, Hiroshima, JP;
Satoshi Tadakuma, Hiroshima, JP;
Hitoshi Wakamatsu, Hiroshima, JP;
Noriyuki Ohyatsu, Hiroshima, JP;
Koji Kuramashi, Hiroshima, JP;
Kenichi Ochi, Hiroshima, JP;
Yusuke Ochi, Hiroshima, JP;
Hirofumi Okazaki, Ibaraki, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Abstract
A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.