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:
Aug. 25, 2020
Filed:
Aug. 04, 2017
Applicant:
A.o. Smith Corporation, Milwaukee, WI (US);
Inventors:
Assignee:
A. O. Smith Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24H 1/20 (2006.01); F24H 9/12 (2006.01); F24H 9/14 (2006.01); F24H 9/18 (2006.01); F24H 1/43 (2006.01); F24H 1/44 (2006.01); F24H 1/28 (2006.01);
U.S. Cl.
CPC ...
F24H 1/205 (2013.01); F24H 1/287 (2013.01); F24H 1/43 (2013.01); F24H 1/44 (2013.01); F24H 9/126 (2013.01); F24H 9/146 (2013.01); F24H 9/1836 (2013.01);
Abstract
A water heater system includes a primary heat exchanger including a tank and at least one flue, and a secondary heat exchanger including a core and a flue gas flow path. The water heater is operable in a heating mode in which a combustor produces hot flue gas and a water pump flows water through the core of the secondary heat exchanger and into the tank, and in a non-heating mode in which the combustor and the water pump are inoperative. The flue gas flows from the combustor through the at least one flue to heat the water in the tank and then through the flue gas flow path to heat water in the core before being exhausted.