Patent ID: 7707832

Claim:
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, comprising: radial swirl inducers of outside diameter D 2 ; a bowl spaced axially downstream in a gas flow direction from the radial swirl inducers, the bowl including a cylindrical wall extended by a flared wall, the flared wall being provided with air intake holes; and a support ring configured to support the injection device, which support ring is arranged around the bowl, wherein the support ring comprises a first cylindrical portion of outside diameter D 3 , and a second cylindrical portion of outside diameter D 4 spaced axially downstream in the gas flow direction from the first cylindrical portion, the first cylindrical portion being connected to the cylindrical wall of the bowl by a plurality of support tabs, and wherein an outer circumference of the first cylindrical portion of the support ring directly contacts a chamber endwall.