Patent ID: 8590312
Filing Date: 2013-11-26
Classification: F23C,F23D,F23R

Abstract:
1. A device for injecting a mixture of air and fuel into a turbomachine combustion chamber, the device comprising: a centering ring for centering a fuel injector, the centering ring including an axial orifice receiving the fuel injector; a Venturi situated downstream from the fuel injector and coaxially therewith; and a primary swirler situated between the centering ring and the Venturi, the swirler including substantially radial vanes defining curved air-passing channels between one another, and the ring including substantially axial air-passing orifices opening out radially inside the swirler, wherein a number of air-passing orifices in the ring is no greater than a number of vanes in the swirler, and downstream outlets of the air-passing orifices in the ring are situated between the channels of the swirler so that air streams leaving the air-passing orifices in the ring do not disturb air streams delivered by the swirler; wherein each of the air-passing orifices opens out into a zone defined by a first plane tangential to a pressure side of the vane of the swirler and a second plane tangential to a suction side of the vane of the swirler.