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:
Jan. 22, 2019
Filed:
Jun. 27, 2016
Applicant:
Rinnai Corporation, Nagoya-shi, Aichi, JP;
Inventors:
Assignee:
RINNAI CORPORATION, Nagoya-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F23D 14/02 (2006.01); F23D 14/64 (2006.01); F23D 14/04 (2006.01); F23D 14/10 (2006.01); F23D 14/26 (2006.01); F23D 14/70 (2006.01);
U.S. Cl.
CPC ...
F23D 14/02 (2013.01); F23D 14/045 (2013.01); F23D 14/105 (2013.01); F23D 14/26 (2013.01); F23D 14/64 (2013.01); F23D 14/70 (2013.01);
Abstract
A combustion apparatus has a plurality of longitudinally elongated gas burners, each having a burner port on an upper end thereof. A damper is disposed to cover gas inlet ports on an upstream end of an air-fuel mixing tube portion of each of the gas burners. The damper has formed therein ventilation holes for limiting primary air. The ventilation holes overlap, and are smaller than, the gas inlet ports. The damper has #1 ventilation holes having obstacles against which the fuel gas to be ejected from the gas nozzles strike, and #2 ventilation holes without obstacles. Poor combustion such as flame lifting is restricted and combustion noises are reduced.