Abstract: A gas-fired burner of the radiant type includes a boardlike heating element constituted by a porous matrix of refractory fibers, the periphery of one side of the heating element being bonded to and in fluidtight engagement with an open end of a sheet metal box functioning as a gas plenum. A combustible gas mixture is fed into the plenum and forced through the porous heating element for burning at the outer face thereof. The boardlike heating element is retained in position by a strip of perforated metal fixed to the outer surface of the sheet metal box and extending about the edge of the heating element, the strip being bent over to hold the edge of the heating element against the box. A multilayer blanket of thermal insulating material wrapped around the sheet metal box is held in position by bent metal tabs and by the bent strip of perforated metal retaining the heating element. A low cost diffuser assembly ensures optimum gas mixture flow within the plenum.

Abstract: A gas-fired burner of the radiant type includes a boardlike heating element constituted by a porous matrix of refractory fibers, the periphery of one side of the heating element being bonded to and in fluidtight engagement with an open end of a sheet metal box functioning as a gas plenum. A combustible gas mixture is fed into the plenum and forced through the porous heating element for burning at the outer face thereof. The boardlike heating element is retained in position by a strip of perforated metal fixed to the outer surface of the sheet metal box and extending about the edge of the heating element, the strip being bent over to hold the edge of the heating element against the box. A multilayer blanket of thermal insulating material wrapped around the sheet metal box is held in position by bent metal tabs and by the bent strip of perforated metal retaining the heating element. A low cost diffuser assembly ensures optimum gas mixture flow within the plenum.

Abstract: A single-wall sheet metal box functioning as a gas plenum has an open face closed by a porous matrix of refractory fibers bonded together to form a rigid, boardlike heating element. A combustible gas mixture is fed into the box, forced through the porous heating element, and burned at the outer face thereof to provide a continuous infrared radiant surface. The outer surface of the sheet metal box is completely covered by a blanket of flexible insulation material having an edge portion stuffed between the periphery of the heating element and an adjacent flangelike edge of the box. A first type of snap-on clip maintains the heating element in position, while a second type of snap-on clip retains the stuffed edge of the insulation blanket between the heating element periphery and the adjacent edge of the box.

Abstract: There is disclosed a furnace which is particularly suitable for domestic use, having means to generate infra-red radiation in a sealed combustion chamber to thereby rapidly heat the same and in turn impart that heat to air ciculated therearound, and ultimately directed to the area to be heated, the combustion arrangement including a fibrous pervious burner member to and through which an air/gas mixture under pressure is directed and caused to burn over the surface thereof to effect the infra-red heat generation, the same effecting greatly improved heating efficiency, reduction in air pollution and a decreased demand for fuel to provide for heating of given area.

Abstract: A radiant burner having a porous, refractory board matrix through which a combustion mixture is blown and at the outside surface of which it burns, characterized by retaining means to hold the matrix on a shelf without a heat absorbing retaining rim for the matrix and air cooling of the burner frame through such retaining means.

Abstract: There is disclosed a furnace which is particularly suitable for domestic use, having means to generate infra-red radiation in a sealed combustion chamber to thereby rapidly heat the same and in turn impart that heat to air circulated therearound, and ultimately directed to the area to be heated, the combustion arrangement including a fibrous pervious burner member to and through which an air/gas mixture under pressure is directed and caused to burn over the surface thereof to effect the infra-red heat generation, the same effecting greatly improved heating efficiency, reduction in air pollution and a decreased demand for fuel to provide for heating of given area.

Abstract: There is disclosed infra-red burner construction which includes the use of a burner face comprising a mat or matrix of fibrous felt refractory composition, required to be positioned at the open side of a plenum through which a combustible medium is supplied to the face, the means to maintain the matrix in position being insulated from the surface at which infra-red generation takes place, and the plenum being positioned within a second plenum, in a manner to provide passageways for a non-combustible medium to be directed outwardly beyond the face of the matrix at the periphery thereof, to prevent undesired heating of either plenum or ignition and burning of combustible mixture beyond the edges of the matrix.