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. 17, 2022
Filed:
Oct. 16, 2019
Applicant:
Young-hwan Choi, Seoul, KR;
Inventor:
Young-Hwan Choi, Seoul, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 9/20 (2022.01); F23L 3/00 (2006.01); F23L 13/04 (2006.01); F24H 1/18 (2022.01); F24H 1/20 (2022.01);
U.S. Cl.
CPC ...
F24H 9/2042 (2013.01); F23L 3/00 (2013.01); F23L 13/04 (2013.01); F24H 1/186 (2013.01); F24H 1/208 (2013.01); F24H 9/2035 (2013.01);
Abstract
The present invention provides a hot water storage-type boiler having both a heat amount proportional control function and a backflow prevention function to prevent a backflow of exhaust gas with a simple structure. In the present invention, since a check valve is integrally coupled to a burner duct, there is an effect of convenient assembly. In addition, since the check valve is built in the burner duct, the check valve does not protrude to the outside, thereby having an effect that a separate space is not required.