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:
May. 19, 2015
Filed:
Oct. 26, 2011
Michael R. Carey, East Hampton, CT (US);
Catalin G. Fotache, West Hartford, CT (US);
Scott A. Liljenberg, Wethersfield, CT (US);
Michael R. Carey, East Hampton, CT (US);
Catalin G. Fotache, West Hartford, CT (US);
Scott A. Liljenberg, Wethersfield, CT (US);
Carrier Corporation, Farmington, CT (US);
Abstract
A burner for use with an induced draft furnace and which satisfies reduced nitrous oxide (NO) emission standards is disclosed. The burner may employ a mechanical swirler that introduces a rotational vector to the emitted air and fuel mixed by the burner. By introducing the rotational vector, the resulting flame is more stable and sustainable even with the relatively low air flow afforded by an induced system. Such flame stability can be enhanced by positioning the burner directly within an inlet to a heat exchanger and manufacturing the inlet with reception surfaces that form a frusto-conically shaped flame expansion zone. In doing so, a secondary source of air is avoided and NOemissions are reduced.