King & Spalding LLP
Pre-mix fuel-fired appliance with improved heat exchanger interface
A fuel-fired heating appliance comprises a burner and a first housing adjacent the burner so that an interior of the first housing receives combustion gasses from combustion at the burner. A heat exchanger defines a second housing with an inlet proximate an outlet of the first housing so that the inlet of the second housing receives combustion gasses from the outlet of the first housing, and wherein the first and second housings attach at an interface. A barrier extends within, and across an interface between, the outlet of the first housing and the inlet of the second housing and defines a thermal resistance that inhibits heat transfer from the combustion gasses to the interface.
RHEEM MANUFACTURING COMPANY
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Qian Divakar Darryl J. Mickey E. Timothy J. Reza Nathan T. Shawn A. Tyson J.
Zhang Mantha Farley Batson Shellenberger Khatami Whalen Reed Cogburn