Patent ID: 8468833
Filing Date: 2013-06-25
Classification: F23C,F23D,F23R

Abstract:
1. A burner arrangement comprising: a tubular mixing tube extending along an axis and configured to mix fuel and air, the mixing tube opening into a combustion chamber in a direction of flow; and a film air ring disposed in the mixing tube and arranged concentrically to the axis, the film air ring configured to prevent a backfiring of the fuel disposed in the mixing tube and to generate or reinforce an air film near the wall, wherein the film air ring includes: a plurality of annular gaps concentric to the axis, disposed in series, and configured to inject air, and a plurality of ring elements disposed in series in the axial direction, each ring element extending circumferentially around the mixing tube, wherein a plurality of support elements are distributed around a circumference of the burner arrangement and configured to hold the plurality of ring elements apart.