Liquid fuel burner

Claim 2

A liquid fuel burner assembly comprising, a tubular barrel, an inner tube disposed within said barrel to form therebetween an annular flow passage, means for supplying liquid fuel to be atomized to the inner tube, means for supplying atomizing fluid to the annular passage, an atomizing head connected to the discharge ends of the inner tube and annular passage, said atomizing head inclUding, a mixing portion having a center bore communicating with the discharge end of the inner tube, a plurality of conduits communicating with said annular passage, a plurality of ports connecting the center bore to the conduits and extending normal to the axis of the burner barrel, said ports directing all of the liquid fuel into mixing relation with the atomizing fluid to atomize the fuel, and a plurality of peripheral openings each being axially aligned with the corresponding port, a flow-diverting portion associated with and receiving outflow from the mixing portion and arranged for converging the flow of atomized flow therethrough, said diverting portion having a passage of frustoconical form with its large and small ends defining the inlet and outlet of said passage respectively, a spraying portion associated with and receiving outflow from the diverting portion and having a discharge face formed with openings arranged for discharge of atomized fuel in diverging paths, said openings extending at an acute angle relative to the axis of the burner barrel, and a sleeve means adapted to engage with the discharge end of the barrel and supportingly enclose the mixing and diverting portions, said sleeve means defining a seal for the peripheral openings and being adapted at its forward end to engage with the spraying portion.

Claim 3

A liquid fuel burner assembly comprising, a tubular barrel, an inner tube disposed within said barrel to form therebetween an annular flow passage, means for supplying liquid fuel to be atomized to the inner tube, means for supplying atomizing fluid to the annular passage, an atomizing head connected to the discharge ends of the inner tube and annular passage, said atomizing head including, a mixing portion having a center bore communicating with the discharge end of the inner tube, a plurality of conduits communicating with said annular passage, a plurality of ports connecting the center bore to the conduits and extending normal to the axis of the burner barrel, said ports directing all of the liquid fuel into mixing relation with the atomizing fluid to atomize the fuel, and a plurality of peripheral openings each being axially aligned with the corresponding port, each of said conduits including an inlet and an outlet segment, each outlet segment communicating with the discharge of one of said ports and having a greater cross-sectional area than the inlet segment, each of said conduits including a divergent transition section connecting the inlet and outlet segments and each of said ports communicating with its corresponding outlet segment at the junction thereof with said transition section, a flow-diverting portion associated with and receiving outflow from the mixing portion and arranged for converging the flow of atomized flow therethrough, said diverting portion having a passage of frustoconical form with its large and small ends defining the inlet and outlet of said passage respectively, a spraying portion associated with and receiving outflow from the diverting portion and having a discharge face formed with openings arranged for discharge of atomized fuel in diverging paths, said openings extending at an acute angle relative to the axis of the burner barrel.

Claim 4

A liquid fuel burner assembly comprising, a tubular barrel, an inner tube disposed within said barrel to form therebetween an annular flow passage, means for supplying liquid fuel to be atomized to the inner tube, means for supplying atomizing fluid to the annular passage, an atomizing head connected to the discharge ends of the inner tube and annular passage, said atomizing head including, a mixing portion having a center bore communicating with the discharge end of the inner tube, a plurality of conduits communicating with said annular passage, a plurality of ports connecting the center bore to the conduits and extending normal to the axis of the burner barrel, said ports directing all of the liquid fuel into mixing relation with the atomizing fluid to atomize the fuel, and a plurality of peripheral openings each being axially aligned with the corresponding port, each of said conduits including an inlet and an outlet segment, each outlet segment communicating with the discharge of one of said ports and having a greater cross-sectional area than the inlet segment, each of said conduits including a divergent transition section connecting the inlet and outlet segments and each of said ports communicating with its corresponding outlet segment at the junction thereof with said transition section, a flow-diverting portion associated with and receiving outflow from the mixing portion and arranged for converging the flow of atomized flow therethrough, said diverting portion having a passage of frustoconical form with its large and small ends defining the inlet and outlet of said passage respectively, a spraying portion associated with and receiving outflow from the diverting portion and having a discharge face formed with openings arranged for discharge of atomized fuel in diverging paths, said openings extending at an acute angle relative to the axis of the burner barrel.