Patent ID: 7908865
Filing Date: 2011-03-22
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 a symmetry of revolution about an axis and comprising, arranged from upstream to downstream in the gas flow direction: a sliding bushing including, arranged from upstream to downstream, a cylindrical upstream part, a convergent conical intermediate part, and an annular flange extending radially outward; an injector positioned at a center of the sliding bushing which injects the mixture into the combustion chamber; an annular cup which retains the sliding bushing axially, the annular cup including, arranged upstream to downstream, a profiled upstream fairing and an annular flange extending radially inward; at least one radial swirler comprising a venturi and a bowl connected to a downstream end of the radial swirler, wherein the cylindrical upstream part includes a first radially outer cylindrical portion, a second radially inner cylindrical portion, and a beveled upstream face inclined radially inward which connects the first radially outer cylindrical portion and the second radially inner cylindrical portion, and wherein the injector is positioned within the second radially inner cylindrical portion.