Pre-mix fuel-fired appliance with improved heat exchanger interface

US10281143B2 · kind B2 · utility

Assignee

• Rheem Manufacturing Company · US

Inventors

• Mickey E. Batson · Barling, US
• Darryl Farley · Fayetteville, US
• Reza Khatami · Centerville, US
• Divakar Mantha · Montgomery, US
• Tyson J. Cogburn · Roland, US
• Nathan T. Whalen · Dean Springs, US
• Qian Zhang · Cypress, US
• Shawn A. Reed · Ursula, US
• Timothy J. Shellenberger · Tyrone, US

Key dates

• Filing date: Jan 13, 2017
• Grant date: May 7, 2019
• Expiry date: Jul 2, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/30
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

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.