Oxygen-gas fuel burner and glass forehearth containing the oxygen-gas fuel burner

A glass forehearth for thermally conditioning glass, the glass forehearth comprising;

• a) an elongated channel having refractory sidewalls;
• and
• b) a plurality of burners positioned within refractory burner blocks forming a portion of the sidewalls of the glass forehearth, each burner comprising;
• a burner housing, said burner housing having a gas fuel conduit extending to a central fuel outlet of an inner fuel nozzle, an outer nozzle of a conical shape having an outer and inner surface;
• said inner nozzle having an outer surface and a central fuel outlet in communication with said gas fuel conduit, said inner nozzle having a forward conforming to said inner surface of said outer nozzle, said inner nozzle having a plurality of grooves circumferentially spaced in said forward face, said grooves and said inner surface define a plurality of passages having an upstream end communicating with an annular oxygen conduit defined by the inner wall of the outer nozzle and an outer wall of an inner tubular member of said fuel conduit;
• said outlet of said inner nozzle and downstream end of said passages communicate with a burner tip chamber defined by a portion of said outer nozzle and the surface of said inner nozzle in communication with said outer nozzle outlet.