Combustion chamber with high temperature protective coating

Details Combustion chamber with high temperature protective coating Combustion chamber with high temperature protective coating

F - Mech Eng,Light,Heat,Weapons

23

M

F23M 5/00 (2006.01) F22B 5/04 (2006.01)

Patent

CA 2442450

A combustion chamber for a gas-fired hot water heater comprises a top wall which is defined by a bottom wall of an inner tank. A flue extends through the inner tank bottom wall. A circumferential skirt is disposed about the combustion chamber. The combustion chamber is supported elevated from a support surface by a bottom pan assembly of a hot water heater housing. A combustion air inlet means leads to the combustion chamber. A floor shield is supported above the bottom wall and spaced below a gas burner assembly. The circumferential skirt and/or the floor shield are coated on at least one surface thereof with refractory paint to reflect radiant heat inwardly in the combustion chamber whereby to maximize heat transferred to the inner tank and to minimize heat loss through the skirt and floor shield.

L'invention concerne une chambre de combustion pour chauffe-eau au gaz formée d'une paroi supérieure définie par la paroi inférieure d'un réservoir interne. Un conduit de fumée traverse la paroi inférieure du réservoir interne. Une jupe entoure la chambre de combustion. Cette dernière repose sur un support surélevé, au fond de la cuve du chauffe-eau. Un orifice d'admission d'air comburant mène à la chambre de combustion. Un bouclier thermique est monté au dessus du fond de la cuve, sous le brûleur. La jupe et le bouclier sont enduits, sur au moins une surface, d'une couche de peinture réfractaire qui reflète la chaleur irradiée à l'intérieur de la chambre de combustion pour maximiser le transfert calorique vers le réservoir interne, tout en réduisant à un minimum les pertes, côté jupe et bouclier.

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