Swirl gas burner

Claim 2

An improved vortex-type burner for use in the burning of gaseous fuel comprising, in combination, an air swirl chamber for producing an airflow; a cylindrical combustion chamber lined with refractory material being disposed in operable relation relative to said air swirl chamber, said combustion chamber having an outlet at one end for discharging combustion products therefrom, and an inlet having a first diameter formed at the end of said combustion chamber opposite the outlet end for the induction of gaseous fuel and said airflow; a first divergent portion of said combustion chamber having a second diameter greater than said first diameter and being situated adjacent said inlet so that said airflow has maXimum expansion in the area of said combustion chamber defined by said first portion; means for introducing fuel into said combustion chamber and containing ports arrayed in annular fashion substantially adjacent the periphery of said inlet for exhausting the fuel directly into said first portion of said combustion chamber; the inlet end of said combustion chamber including a second divergent portion means for seating the fuel introducing means out of the direct line of radiation produced as a result of combustion.

Claim 3

An improved vortex-type burner according to claim 1 wherein said combustion chamber includes a third convergent portion located adjacent said outlet end.

Claim 4

An improved vortex-type burner for use in the burning of gaseous fuel comprising, in combination, a refractory-lined combustion chamber, said combustion chamber having a circular outlet at one end for discharging combustion products therefrom and a circular inlet of a first diameter at the end of said chamber opposite said outlet end for the induction of gaseous fuel and an airflow, air induction means in operable communication with said combustion chamber circular inlet for introducing a swirling annulus of air into said combustion chamber at said circular inlet, said combustion chamber including annular angular fillet means adjacent said circular inlet, said fillet means including a first internal exposed wall sloping outwardly from said inlet into said combustion to define an area within said combustion chamber adjacent to and having a diameter greater than that of said circular inlet to provide for turbulent expansion of said swirling annulus of air, fuel introduction means mounted concentrically with said circular inlet for receiving and exhausting gaseous fuel into said area of turbulent expansion, said fuel introduction means including an annular member having a pair of adjacent walls disposed to form an apex formed with orifice means substantially located at the periphery of said circular inlet, said fillet means further including on its opposite side from said internal wall a rear wall extending rearwardly outward from the periphery of said circular inlet at a slope complemental to that of an adjacent one of said walls of said fuel introduction means such that said fuel introduction means is maintained out of the direct line of radiation produced as a result of combustion, whereby said fuel is exhausted into said combustion chamber as close as possible to said area having maximum airflow turbulence.

Claim 5

An improved vortex-type burner for use in the burning of gaseous fuel comprising, in combination, a refractory-lined combustion chamber, said combustion chamber having a circular outlet at one end for discharging combustion products therefrom and a circular inlet of a first diameter at the end of said chamber opposite said outlet end for the induction of gaseous fuel and an airflow, air induction means in operable communication with said combustion chamber circular inlet for introducing a swirling annulus of air into said combustion chamber at said circular inlet, said combustion chamber including annular angular fillet means adjacent said circular inlet, said fillet means including a first internal exposed wall sloping outwardly from said inlet into said combustion to define an area within said combustion chamber adjacent to and having a diameter greater than that of said circular inlet to provide for turbulent expansion of said swirling annulus of air, fuel introduction means mounted concentrically with said circular inlet for receiving and exhausting gaseous fuel into said area of turbulent expansion, said fuel introduction means including an annular member having a pair of adjacent walls disposed to form an apex formed with orifice means substantially located at the periphery of said circular inlet, said fillet means further including on its opposite side from said internal wall a rear wall extending rearwardly outward from the periphery of said circular inlet at a slope complemental to that of an adjacent one of said walls of said fuel introduction means such that said fuel introduction means is maintained out of the direct line of radiation produced as a result of combustion, whereby said fuel is exhausted into said combustion chamber as close as possible to said area having maximum airflow turbulence.

Claim 6

An improved vortex-type burner according to claim 3 wherein said fuel introducing means comprises a burner ring having a delta configuration.

Claim 7

An improved vortex-type burner according to claim 3 wherein said air induction means includes a cylindrical member having a substantially uniform diameter that substantially corresponds to said first diameter.

Claim 8

An improved vortex-type burner according to claim 5 wherein said cylindrical member is provided with a plurality of nozzles tangentially arranged about the periphery thereof for producing an inlet for the air.

Claim 9

An improved vortex-type burner according to claim 3 wherein said rear wall comprises a continuous annular outer surface formed at the inlet end of said combustion chamber, said rear wall being spaced in predetermined distance from said fuel introduction means thereby to define an annular passageway for the entry of said swirling annulus of air into said combustion chamber.

Claim 10

An improved vortex-type burner according to claim 7 wherein spacing members are provided between said rear wall and said fuel introduction means for locating the latter in spaced relation relative to said rear wall.

Claim 11

An improved vortex-type burner according to claim 3 wherein said combustion chamber is cylindrical in shape and has a longitudinal axis, said first exposed internal wall being divergent relative to said longitudinal axis of said combustion chamber and said combustion chamber including a second exposed internal wall located betWeen said first exposed internal wall and said outlet end converging toward said longitudinal axis as the second exposed internal wall extends away from said inlet end.