Multipoint injector for a turbine engine combustion chamber

摘要

A fuel injector device for an annular combustion chamber including a pilot circuit feeding an injector and a multipoint circuit feeding injection orifices formed in a front face of an annular chamber, an annular ring being mounted in the annular chamber to define therein a fuel feed circuit for the injection orifices and a cooling circuit operating by passing the fuel feeding the injector and extending over the front face of the chamber in immediate vicinity of the injection orifices.

主权项

1. A fuel injector device for an annular combustion chamber of a turbine engine, comprising:
a pilot circuit that continuously feeds an injector leading into a first venturi; a multipoint circuit intermittently feeding injection orifices opened downstream and formed in a front face of an upstream annular chamber of a second venturi coaxial about the first venturi; an annular ring mounted in the annular chamber to define therein a fuel feed circuit that feeds the injection orifices and a cooling circuit that operates by passing fuel that feeds the injector of the pilot circuit, wherein the cooling circuit includes a groove formed in a downstream face of the annular ring in immediate vicinity of the injection orifices, the downstream face of the annular ring being pressed against the front face of the annular chamber.