Patent ID: 6035812
Filing Date: 2000-03-14
Classification: F23D,F23L,F23N,Y10S

Abstract:
A water heater comprising:a tank adapted to hold a quantity of water;a combustion chamber disposed beneath said tank and having a bottom side wall structure with a spaced series of air inlet openings therein;a fuel burner operative to receive fuel from a source thereof and deliver the received fuel into said combustion chamber;a hollow cylindrical skirt structure extending downwardly beyond said bottom side wall structure and having a vertical side wall portion with a spaced series of inlet openings formed therein for permitting a combustion air inflow therethrough into the interior of said hollow skirt structure for delivery therefrom into said combustion chamber, via said spaced series of combustion air inlet openings in said bottom side wall structure, for combustion with burner-delivered fuel therein; anda combustion air shutoff system operative to sense a temperature indicative of an undesirably high operating temperature within said combustion chamber and responsively terminate essentially all further combustion air inflow to said combustion chamber by blocking air flow to said combustion chamber via the interior of said skirt structure.