Patent ID: 6196164
Filing Date: 2001-03-06
Classification: F23D,F24H

Abstract:
A water heater comprising:a water container;a combustion chamber located adjacent said container;a burner located inside said combustion chamber;a flame trap positioned at an opening in said combustion chamber, said flame trap permitting ingress of air and/or extraneous gases into said combustion chamber and prevent egress of flames from said water heater;a flame trap duct extending into said combustion chamber, said flame trap duct having one end portion connected to said opening and another end portion connected to said flame trap; anda flame arrestor positioned at said opening in said combustion chamber to block ingress of combustion air and/or extraneous gases when the temperature in said combustion chamber adjacent said flame trap exceeds a predetermined temperature,wherein said flame arrestor has a longitudinally extending body slidably positioned interiorly of said duct and a temperature sensitive material positioned on said body to maintain said body in non-sliding engagement with said duct until the temperature in said combustion chamber adjacent said flame trap exceeds said predetermined temperature.