Patent ID: 7721545
Filing Date: 2010-05-25
Classification: F23R,Y02T

Abstract:
1. A device for injecting a mixture of air and fuel into a combustion chamber of a turbomachine, the injection device having symmetry of revolution about an axis and comprising, arranged from upstream to downstream in the direction in which the gases flow, a sliding bushing of axis of revolution Y connected to radial swirl inducers by a dish, an aerodynamic bowl spaced axially from the radial swirl inducers, the sliding bushing comprising a convergent conical upstream wall continuing into a cylindrical wall of axis X and a downstream flange extending radially at the downstream end of the cylindrical wall, the downstream flange being equipped with pressurized-air supply holes also known as purge holes, wherein the convergent upstream wall of the sliding bushing is equipped with at least one row of circumferentially-spaced additional pressurized-air supply orifices.