Burner nozzle

A burner assembly comprising:

• a combustion tube formed of sheet metal surrounding an interior region, said combustion tube comprising opposing sections each with a peripheral rib, the peripheral rib of one of said sections being constructed and arranged so as to overlie the peripheral rib of the other of said sections, said combustion tube being adapted to engage a heat receiving member;
• a burner nozzle formed of sheet metal disposed in said interior region, said burner nozzle including wings which are trapped between each said peripheral rib, one said peripheral rib being folded over the other said peripheral rib, said burner nozzle comprising:
• a burner tube that extends along a central axis and has an inlet end for receiving a combustible mixture of gas and air,
• a body having a passageway in communication with said burner tube and having an elongated end portion, said body increasing in size from said burner tube toward said elongated end portion,
• at least one flame shaping opening disposed near said end portion for releasing a mixture of said gas and air, and
• at least one surface that is angled or curved relative to said central axis, wherein the at least one said flame shaping opening is disposed near the at least one said surface, said central axis being generally perpendicular with and centrally located relative to the at least one said surface, and
• an igniter element fastened to said combustion tube and positioned so as to extend from an exterior of one of said sections to near said gas flow path,
• wherein the at least one said flame-shaping opening and the at least one said surface are constructed and arranged effective to elongate flame resulting from combustion of said mixture transverse to said central axis to produce efficient heat transfer between said flame and air inside said heat-receiving member.

A burner nozzle comprising:

• a burner tube that extends along a central axis and has an inlet end for receiving a combustible mixture of gas and air and a width transverse to said central axis,
• a body having a passageway in communication with said burner tube and terminating in a generally rectangular outlet end portion that includes two generally parallel elongated edges that extend transverse to said central axis, said body increasing in size from said burner tube toward said outlet end portion, said outlet end portion comprising at least one surface that is angled or curved, wherein the at least one said surface includes a central imperforate region extending across said width of said burner tube near a midpoint between said elongated edges and generally parallel to said elongated edges, and;
• at least one flame shaping opening disposed near the at least one said surface for releasing said combustible mixture of said gas and air;
• wherein the at least one said flame-shaping operand and the at least one said surface are constructed and arranged effective to produce an elongated flame across an extent of said outlet and portion resulting from combustion of said mixture transverse to said central axis.