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US 5,511,516 AGranted
Water heater with low NO.sub.x ceramic burner
AssigneeSABH (U.S.) Water Heater Group, Inc.
InventorsH. Jack Moore, Jr., Martin Abalos
Life of this patent
Estimating the term…
Abstract
A water heater having improved operating characteristics and lower costs of manufacturing is described. The water heater has an unified combustion chamber and burner construction with a ceramic fiber matrix burner.
Claims24
A water heater comprising:
- a tank adapted to contain a body of water, said tank having a water inlet, a water outlet and a bottom;
- a chamber defined by said tank bottom, a side wall substantially gas tightly sealed to said tank bottom and a bottom pan substantially gas tightly sealed to said side wall;
- a flue passing through said tank having an inlet in said tank bottom;
- a ceramic burner substantially gas tightly sealed substantially directly to said side wall and adapted to contain combustion above said burner;
- a fuel and air proportioner extending into said chamber and adapted to admit ambient air and fuel to said chamber;
- said chamber being substantially gas tight except for said proportioner and said flue.
3 more elements
A water heater comprising:
- a tank adapted to contain a body of water, said tank having a water inlet, a water outlet and a bottom;
- a flue passing through said tank having an inlet in said tank bottom;
- a skirt substantially gas tightly fixed to said tank bottom;
- a burner shelf having a central opening fixed substantially directed to said skirt;
- a ceramic fiber matrix burner fixed to said burner shelf whereby a combustion chamber is defined within said skirt between said tank bottom and said burner;
- a burner bottom pan fixed to said skirt whereby a burner chamber is defined within said skirt between said burner, said burner shelf and said burner bottom pan;
- and
- a fuel and air proportioner adapted to admit fuel and ambient air into said burner chamber.
5 more elements
A water heater comprising:
- a rank adapted to contain a body of water, said hank having a water inlet, a water outlet and a bottom;
- a combustion chamber defined by said tank bottom and located interiorly of a side wall substantially gas tightly sealed to said tank bottom;
- a flue passing through said tank and connecting to said combustion chamber;
- a ceramic burner located inwardly of and fixed substantially directly to said side wall to form a bottom portion of said combustion chamber and adapted contain combustion above said burner;
- a fuel and air proportioner extending through and substantially gas tightly sealed to said side wall and adapted to channel ambient air and fuel to a burner chamber formed by said burner, said side wail and a bottom pan;
- said combustion chamber being substantially gas tight except for said burner and said flue and said burner chamber being substantially gas tight except for said burner and said proportioner.
3 more elements
Dependencies are inferred from the claim text.