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:
Jun. 11, 1991
Filed:
Jul. 14, 1989
Yasuo Yoshii, Katsuta, JP;
Shigeru Azuhata, Hitachi, JP;
Norio Arashi, Hitachi, JP;
Kenichi Sohma, Ibaraki, JP;
Tooru Inada, Hitachi, JP;
Hideo Kikuchi, Hitachi, JP;
Masayuki Taniguchi, Katsuta, JP;
Kiyoshi Narato, Ibaraki, JP;
Hironobu Kobayashi, Katsuta, JP;
Tadayoshi Murakami, Hitachi, JP;
Michio Kuroda, Hitachi, JP;
Yoji Ishibashi, Hitachi, JP;
Stephen M Masutani, Honolulu, HI (US);
Hitachi, Ltd., Tokyo, JP;
Abstract
A low NOx burning method and apparatus wherein a low air ratio flame burned with an amount of air less than an amount of air in a theoretical air ratio required for burning fuel perfectly is formed, and combustibles discharged from the low air ratio flame are burned at a trailing stream of the low air ratio flame while supplying air. The low air ratio flame is a premixing flame burned by premixing the fuel and air, and combustion of the premixing flames is maintained in the vicinity of the premixing flame. In this way, the generation of the NOx during the burning can be greatly decreased, and the required apparatus can be small-sized.