Combustion chamber burner throat construction

Claim 2

In a combustion chamber bounded by refractory walls through one of which extends a throat opening between the outer and inner surfaces of the one wall to admit fuel and air into the combustion chamber, the improvement comprising a plurality of sectorial refractory outer bricks so disposed that the totality of said outer bricks form at least a portion of the throat adjacent the outer surface of the one combustion chamber wall, each said outer brick having a flame shaping surface thereon, the flame shaping surfaces being disposed in circumferentially spaced relation to one another so that the totality of the surfaces form at least the outer portion of the throat opening, said outer brick flame shaping surfaces diverging toward the inner surface of the one wall, the flame shaping surfaces of bricks at differing circumferential locations about the throat opening diverging at differing degrees.

Claim 3

The invention of claim 1, wherein the degree of divergence of each said brick flame shaping surface is proportional to the distance from said brick surface to the boundary of the combustion chamber, said distance being measured radially with respect to said throat.

Claim 4

The invention of claim 1, wherein the flame shaping surfaces of bricks adjacent the walls of said combustion chamber diverge to a lesser degree than the flame shaping surfaces of bricks remote from the walls of said combustion chamber.

Claim 5

The invention of claim 1 in combination with a plurality of sectorial refractory inner bricks disposed in said throat opening between the inner surface of said one wall and said plurality of outer bricks, the totality of said inner bricks forming the inner portion of said throat and diverging toward the inner surface of the one wall.

Claim 6

The invention of claim 6 wherein said inner bricks at differing circumferential locations about the throat opening diverge at differing degrees.

Claim 7

In a combustion chamber of the type including a generally vertical front wall that has an outer surface and an inner surface, and side, bottom, and top walls receding generally perpendicularly from the inner surface of said front wall, an improved throat construction forming a throat opening along an axis extending from said outer surface to said inner surface comprising means forming a generally cylindrical opening in said front wall extending between said inner and outer surfaces, said opening being symmetrical with respect to said axis, a plurality of sEctorial refractory outer bricks disposed in said cylindrical opening extending from said outer surface to a plane intermediate the outer and inner surfaces of said front wall, said bricks diverging from said outer surface toward said plane, means disposed in said cylindrical opening for defining an outwardly diverging inner portion of said throat, said outer bricks diverging to form a shape at said plane that is generally geometrically similar to the internal shape of the combustion chamber as established by the relative position of said side, bottom, and top walls.

Claim 8

In a combustion chamber of the type including a generally vertical front wall that has an outer surface and an inner surface, and side, bottom, and top walls receding generally perpendicularly from the inner surface of said front wall, an improved throat construction forming a throat opening along an axis extending from said outer surface to said inner surface comprising means forming a generally cylindrical opening in said front wall extending between said inner and outer surfaces, said opening being symmetrical with respect to said axis, a plurality of sEctorial refractory outer bricks disposed in said cylindrical opening extending from said outer surface to a plane intermediate the outer and inner surfaces of said front wall, said bricks diverging from said outer surface toward said plane, means disposed in said cylindrical opening for defining an outwardly diverging inner portion of said throat, said outer bricks diverging to form a shape at said plane that is generally geometrically similar to the internal shape of the combustion chamber as established by the relative position of said side, bottom, and top walls.

Claim 9

The invention of claim 6 wherein said inner portion throat opening defining means includes a plurality of sectorial refractory inner bricks disposed in said cylindrical opening adjacent said inner wall surface.

Claim 10

In a combustion chamber bounded by refractory walls through one of which extends a throat opening between the outer and inner surfaces of the one wall to admit fuel and air into the combustion chamber, the improvement comprising a plurality of sectorial refractory outer bricks so disposed that the totality of said outer bricks form the outer portion of said throat defined between the outer surface of said one wall and a plane intermediate the outer and inner surfaces of said one wall, each said outer brick having a flame shaping surface thereon, the flame shaping surfaces being disposed in circumferentially spaced relation to one another so that the totality of the surfaces form the outer portion of said throat opening, said outer brick flame shaping surfaces diverging toward said plane, a plurality of sectorial refractory inner bricks so disposed that the totality of said inner bricks form the inner portion of said throat defined by said plane and the inner surface of said one wall, each said brick having a flame shaping surface thereon, the flame shaping surfaces being disposed in circumferentially spaced relation to one another so that the totality of the surfaces form the inner portion of the throat opening, said inner brick flame shaping surfaces diverging toward the inner surface of the one wall, the flame shaping surfaces of bricks at differing circumferential locations about the throat opening diverging at differing degrees.

Claim 11

In a combustion chamber bounded by refractory walls through one of which extends a throat opening between the outer and inner surfaces of the one wall to admit fuel and air into the combustion chamber, the improvement comprising a plurality of sectorial refractory outer bricks so disposed that the totality of said outer bricks form the outer portion of said throat defined between the outer surface of said one wall and a plane intermediate the outer and inner surfaces of said one wall, each said outer brick having a flame shaping surface thereon, the flame shaping surfaces being disposed in circumferentially spaced relation to one another so that the totality of the surfaces form the outer portion of said throat opening, said outer brick flame shaping surfaces diverging toward said plane, a plurality of sectorial refractory inner bricks so disposed that the totality of said inner bricks form the inner portion of said throat defined by said plane and the inner surface of said one wall, each said brick having a flame shaping surface thereon, the flame shaping surfaces being disposed in circumferentially spaced relation to one another so that the totality of the surfaces form the inner portion of the throat opening, said inner brick flame shaping surfaces diverging toward the inner surface of the one wall, the flame shaping surfaces of bricks at differing circumferential locations about the throat opening diverging at differing degrees.

Claim 12

The invention of claim 8, wherein the degree of divergence of each said brick flame shaping surface is proportional to the distance from said brick surface to the boundary of the combustion chamber, said distance being measured radially with respect to said throat.

Claim 13

The invention of claim 8, wherein the flame shaping surfaces of bricks adjacent the walls of said combustion chamber diverge to a lesser degree than the flame shaping surfaces of bricks remote from the walls of said combustion chamber.