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. 21, 2007
Filed:
Sep. 08, 2005
Ozzie Missoum, Pike Road, AL (US);
Gregory M. Welk, Prattville, AL (US);
Phillip W. Stephens, Millbrook, AL (US);
Qian Zhang, Montgomery, AL (US);
Jeffrey M. Haney, Montgomery, AL (US);
Ozzie Missoum, Pike Road, AL (US);
Gregory M. Welk, Prattville, AL (US);
Phillip W. Stephens, Millbrook, AL (US);
Qian Zhang, Montgomery, AL (US);
Jeffrey M. Haney, Montgomery, AL (US);
Rheem Manufacturing Company, Atlanta, GA (US);
Abstract
A fuel-fired commercial water heater has upper and lower communicated tank portions which are separated by a plenum forming a vertically intermediate portion of a dual pass condensing type heat exchanger. A lower portion of the heat exchanger is defined by a series of vertical flue tubes extending through the lower tank and intercommunicating the plenum with a combustion chamber disposed beneath the lower tank and having a fuel burner with a discharge portion communicated therewith. An upper portion of the heat exchanger is defined by a vertical flue pipe, disposed in the upper tank, that extends upwardly from the plenum and then coils downwardly around itself and horizontally exits the upper tank. During firing of water heater the burner flows flue gases sequentially through the lower tank flue tubes, the plenum, and the upper tank coiled flue pipe structure.