Diffuser with a varying circumferential supply.

摘要

The invention relates to a diffuser (5) for a turbojet engine, the latter comprising a compressor intended to deliver compressed air F and an annular combustion chamber (6) comprising an external shell (4) and an internal shell (3), connected by a chamber bottom (8) and by a cap (10) equipped with orifices (11) for feeding air to the chamber bottom (8), said diffuser (5) being interposed between said compressor and said chamber (6), at a distance from the latter, said cap (10) separating the air flow F delivered by said diffuser (5) into a flow Fo feeding the chamber bottom (8), a bypass flow Fe on the external shell (4) and a bypass flow Fi on the internal shell (3), characterised in that said diffuser (5) comprises a non-circular outlet, in which a plurality of conduits (18) separated by radial partitions (17) open, said conduits (18) being distributed radially in three groups of conduits (18i, 18a, 18e) delivering the elementary flows of air, distributed circumferentially and directed towards the zones to be fed (11, 12, 13) of the combustion chamber (6). <IMAGE>