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:
Apr. 16, 2002
Filed:
Mar. 21, 2000
Tsuyoshi Kuroda, Kuwana, JP;
Makoto Arai, Nagoya, JP;
Yasuhiro Ito, Nagoya, JP;
Yasushi Okumura, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
A method for controlling the combustion of burners in a batch-type combustion furnace, includes the steps of electrically linking a where the fuel gas control valves are electrically linking to corresponding air control valves for each of the burners in a batch-type combustion furnace. The method includes the steps of preliminarily calibrating the air-fuel ratio adjusted with zero and span adjustments between the fuel gas control valve and the corresponding air control valve so as to give a theoretical air-fuel ratio when same electric signals are given to the fuel gas control valve and the air control valve. The next step is inputting an electric signal from a temperature controller to the fuel gas control valve, then adding an electric signal for adjusting an excess air volume to a same electrical signal as that for the fuel gas control valve, and finally inputting the resulting electric signal obtained by the above addition to the air control valve, wherein the combustion of each of the burners is controlled.