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US 5,409,375 AGranted
Radiant burner
AssigneeSelee Corporation
InventorKenneth R. Butcher
Life of this patent
Estimating the term…
Abstract
There is provided an improved radiant burner formed from a reticulated ceramic substrate. The porosity of the substrate is such as to permit combustible gas to pass therethrough. The substrate includes a plurality of intersecting grooves extending into one of its surfaces, thereby substantially eliminating cold spots on the radiant burner.
Claims11
A radiant burner comprising:
- a reticulated ceramic substrate;
- said substrate having a porosity so as to permit combustible gas to pass therethrough;
- said substrate having first and second major surfaces;
- said first surface adapted to be in initial contact with the gas;
- said second surface adapted to radiate after the gas has been ignited;
- a plurality of grooves received in said substrate on said second surface;
- said grooves including a first set of grooves and a second set of grooves;
- said first set of grooves being parallel and spaced apart from one another and said second set of grooves being parallel and spaced apart from one another;
- said second set of grooves intersecting with said first set of grooves;
- said grooves are substantially V-shaped;
- the depth of said grooves being between 0.125" and 0.5";
- the density of said reticulated ceramic substrate is between 10% and 25% of the density of a solid ceramic block of the same outer dimensions.
9 more elements
A radiant burner comprising:
- a reticulated ceramic plate;
- said plate having a pore density between 10 pores per inch and 100 pores per inch so as to permit combustible gas to pass therethrough;
- said substrate having first and second major surfaces;
- said first major surface adapted to have initial contact with the combustible gas;
- said second major surface adapted to radiate after said gas has been ignited;
- a first set of spaced apart parallel grooves extending into said second surface;
- a second set of spaced apart parallel grooves extending into said second surface;
- said first set of grooves intersecting with said second set of grooves;
- said grooves being at least 0.125" deep;
- adjacent parallel grooves being spaced apart no more than 2";
- said grooves being substantially V-shaped;
- the density of said reticulated ceramic plate is between 10% and 25% of the density of a solid ceramic block of the same outer dimensions.
9 more elements
A method for producing a radiant burner comprising the steps of:
- cutting a piece of polyurethane foam in the desired shape;
- cutting a plurality of spaced apart grooves in said polyurethane foam;
- forming a ceramic slurry;
- impregnating said polyurethane foam with said ceramic slurry;
- drying said slurry;
- firing said impregnated polyurethane foam thereby forming a reticulated ceramic radiant burner;
- said grooves including a first set of grooves and a second set of grooves;
- said first set of grooves being parallel and spaced apart from one another;
- said second set of grooves being parallel and spaced apart from one another;
- said second set of grooves intersecting with said first set of grooves;
- said grooves being substantially V-shaped;
- the depth of said grooves is between 0.125" and 0.5";
- the density of said radiant burner being between 10% and 25% of the density of a solid ceramic block of the same outer dimensions.
10 more elements
A method for forming a radiant burner comprising the steps of:
- cutting a piece of polyurethane foam in the desired shape;
- preparing a ceramic slurry;
- impregnating said polyurethane foam with said ceramic slurry;
- drying said slurry;
- firing said impregnated polyurethane foam thereby forming a reticulated ceramic substrate;
- cutting a plurality of spaced apart parallel grooves in one surface of said reticulated ceramic substrate;
- said grooves including a first set of grooves and a second set of grooves;
- said first set of grooves being parallel and spaced apart from one another;
- said second set of grooves being parallel and spaced apart from one another;
- said second set of grooves intersecting with said first set of grooves;
- said grooves being substantially V-shaped;
- the depth of said grooves being between 0.125" and 0.5";
- the density of said reticulated ceramic substrate being between 10% and 25% of the density of a solid ceramic block of the same outer dimension.
10 more elements
Dependencies are inferred from the claim text.