| 摘要 |
A vent damper for limiting the flow of ambient air in a hot water heater including a main burner, a pilot light burner and a central core for evacuation of exhaust gases from the main burner and pilot light burner. The vent damper comprises an inner shell having legs that extend downwardly and attach to a central baffle which directs the flow stream of exhaust gases passing through the exhaust port, a closure element slidably engaged about the inner shell which is movable between an open position and a closed position, a deflector attached to the upper end of the inner shell for deflecting downdrafts and limiting the upward travel of the seal ring, and an outer shell attached to the deflector that houses the aforementioned components.
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