Patent ID: 6793483
Filing Date: 2004-09-21
Classification: F23D,F23G

Abstract:
Combustion burner comprising:an air supply plenum, having a cylindrical shape with a front tip end and a rear end, and an elongate hollow section therebetween; an air supply inlet, on said air supply plenum, between its said front tip end and its said rear end, and in fluid communication therewith; a cylindrical nozzle body, attached to and in fluid communication with, said front tip end of said air supply plenum; an outlet jet hole, in said nozzle body; an air nozzle, having an elongate, hollow cylindrical shape, with a frustoconical front end, and a flat planar rear end, said air nozzle being in said front tip end of said air supply plenum, towards an outer periphery thereof, coaxially oriented with a longitudinal axis of said air supply plenum, and extending into said cylindrical nozzle body, for supplying air from said air supply plenum to said jet hole in said cylindrical nozzle body; a plurality of air guides in each of said at least one air nozzle, each said air guide comprising: an air inlet hole in a rear end of said frusto-conical front end of each of said at least one air nozzle, for accepting an air stream from said air supply plenum, such that an opening of said air inlet hole is oriented coaxially with a longitudinal axis of said air nozzle, and is positioned towards an outer periphery of said air guide adjacent to said air nozzle; and a corresponding air guide channel, in fluid communication with said air inlet hole, such that said air guide channel is transverse to said longitudinal axis of said air nozzle, so as to change a direction of flow of air flowing into said air inlet hole to a direction perpendicular to said longitudinal axis of said air nozzle, such that a stream of air exits from each air guide channel in a spiral vortex pattern; a fuel supply header, centrally positioned in said front tip end of said air supply plenum, extending into said cylindrical nozzle body, at a central part thereof, concentric with said air nozzle, and having a frusto-conical front end, a circurlarly planar rear end, and a hollow cylindrically shaped elongated portion therebetween; a plurality of fuel supply inlet pipes, centrally positioned in said air supply plenum, extending longitudinally through said rear end thereof, towards said front tip end thereof, for delivering at least one of a combustible fuel and additives thereto to said combustion burner; a plurality of fuel supply inlet holes in said planar rear end of said fuel supply header, for accepting front ends of said plurality of fuel supply inlet pipes, and in fluid communication therewith; a plurality of fuel guide grooves, corresponding in number to a number of said plurality of fuel supply inlet holes, in said frusto-conical front end of said fuel supply header, open at at least one direction of coaxial with a longitudinal axis of said fuel supply pipes and transverse thereto, for distributing said at least one of said combustible fuel and said additives thereto from said fuel supply header in a spiral vortex pattern of opposite direction to said spiral vortex pattern of said air exiting from said air outlet nozzle.