Patent ID: 9003802
Filing Date: 2015-04-14
Classification: F23D,F23R

Abstract:
1. A fuel injector device for an annular combustion chamber of a turbine engine, the device comprising: a pilot circuit continuously feeding an injector leading into a first venturi; a multipoint circuit intermittently feeding injection orifices formed in a downstream face of an annular ring mounted in an annular chamber formed at the upstream end of a second venturi coaxially surrounding the first venturi; and thermal insulation means for insulating the downstream face of the annular ring, the thermal insulation means comprising an annular cavity formed around the injection orifices between the downstream face of the annular ring and a downstream wall of the annular chamber and configured to be filled in operation with air or with coked fuel, the downstream face of the annular ring and the downstream wall of the annular chamber extending at least partially in a radial direction.