Cooking range burner head assembly

Abstract

A burner assembly includes a substantially annular two-piece burner head having a base and a top. A plate is located in a central opening of the burner head and includes a slot for holding a pilot burner. Burner head annular channels incorporate one or more air dams to provide a backpressure feature within the burner head for more even flame height and stability.

1 . A gaseous fuel burner assembly comprising:
 a venturi;   an annular burner head associated with said venture for the combustion of gaseous fuel received in said burner head from said venturi, said annular burner head having a center opening therethrough for flow of ambient secondary combustion air;   said burner head including a base defining a substantially annular channel between an inner wall and an outer wall, said annular channel having an open top, said burner head including a removable cover on said annular channel, said cover having outwardly facing, upwardly facing and inwardly facing surfaces;   said burner head defining gas-emitting orifices;   a plate disposed in said center opening and including a slot for holding a pilot light burner head.   
   
   
       2 . The burner assembly of  claim 1 , said upwardly facing surfaces including a top surface, said inwardly facing surfaces including a first inner angled surface extending downwardly and inwardly from the top surface to a second inwardly angled surface that extends downwardly and inwardly from the first inner angled surface. 
   
   
       3 . The burner assembly of  claim 2 , said orifices defined in at least each of said top surface, said first inner angled surface and said second inner angled surface. 
   
   
       4 . The burner assembly of  claim 3 , said outwardly facing surfaces including a first outer angled surface extending downward and outward from the top surface to a second outer angled surface that extends downward and outward to a substantially vertical outermost surface, said orifices are located only in each of said top surface, said first inner angled surface, said second inner angled surface and said first outer angled surface, such that said second outer angled surface and said outermost surface lack any orifices. 
   
   
       5 . The burner assembly of  claim 1 , said cover having an outer edge defining an outer lip engaging said base and an inner edge defining an inner lip engaging said base. 
   
   
       6 . The burner assembly of  claim 5 , said inner lip and said outer lip lying in a common plane. 
   
   
       7 . The burner assembly of  claim 1 , including a monolithic body forming first and second gas receivers, first and second venturis and first and second burner head bases; and said burner assembly having first and second burner head covers removably engaged on said first and second burner head bases. 
   
   
       8 . The burner assembly of  claim 9 , said first burner head base and said second burner head base configured with said first and second venturis, respectively, for developing gas flows through said first and second burner head bases directed oppositely with respect to each other. 
   
   
       9 . The burner assembly of  claim 1  wherein said annular channel of said base is defined by inner and outer walls, and an air dam extends across the annular channel between the inner wall and the outer wall. 
   
   
       10 . The burner assembly of  claim 9  wherein the air dam is located proximate a gaseous fuel inlet to the annular channel such that gaseous fuel entering the annular channel travels around the annular channel toward the air dam. 
   
   
       11 . The burner assembly of  claim 10  wherein the air dam is a first air dam having a full channel height, the assembly further includes a second air dam extending between the inner wall and the outer wall. 
   
   
       12 . The burner assembly of  claim 11  wherein the second air dam is located upstream of the first air dam by between forty and sixty degrees, the second air dam having a partial channel height. 
   
   
       13 . A gaseous fuel burner assembly comprising:
 a venturi;   an annular burner head associated with said venture for the combustion of gaseous fuel received in said burner head from said venturi, said annular burner head having a center opening therethrough for flow of ambient secondary combustion air;   said burner head including a base defining a substantially annular channel between an inner wall and an outer wall, said annular channel having an open top, said burner head including a removable cover on said annular channel, said cover having gas emitting orifices therein, said annular channel including an air dam extending between inner and outer walls that form the annular channel.   
   
   
       14 . The burner assembly of  claim 13  wherein the air dam is located proximate a gaseous fuel inlet to the annular channel and downstream of a flow direction of gaseous fuel into the annular channel. 
   
   
       15 . The burner assembly of  claim 14  wherein the air dam is a first air dam having a full channel height, the assembly further includes a second air dam. 
   
   
       16 . The burner assembly of  claim 15  wherein the second air dam is located upstream of the first air dam by between thirty and ninety degrees. 
   
   
       17 . The burner assembly of  claim 16  wherein the second air dam has a height that is less than the full channel height. 
   
   
       18 . The burner assembly of  claim 14 , further comprising:
 a plate disposed in said center opening and including a slot for holding a pilot light burner head.