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:
Nov. 04, 1986
Filed:
Apr. 23, 1985
Mitsuyo Nishikawa, Hitachi, JP;
Nobuo Kurihara, Hitachiohta, JP;
Yoshio Sato, Hitachi, JP;
Atsumi Watanabe, Hitachi, JP;
Toshihiko Higashi, Hitachi, JP;
Hisanori Miyagaki, Hitachiohta, JP;
Atsushi Yokogawa, Hitachi, JP;
Yoshihiro Shimada, Izumi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
This invention relates to the supervision of a combustion state of a combustion furnace. A flame formed concentrically with the direction of a fuel jetted from a burner being the center is measured from its side, and two oxidizing flame zones as high luminance zones are extracted. Using the shape parameters of the flame, an index for reducing NOx and unburnt components in ash are calculated and estimated so as to supervise the combustion state. The positions or centroids of the flames and the distance between the centroids are used as the shape parameters, and the flame shape is divided into two zones for easy display of each zone.