DEVICE FOR INJECTING A FUEL OR A FUEL/OXIDISER PRE-MIXTURE, COMPRISING MEANS FOR PASSIVE CONTROL OF THE COMBUSTION INSTABILITIES

摘要

The invention relates to a multi-point device for injecting a fuel or a fuel/oxidiser pre-mixture into a combustion zone (3) arranged downstream of the device in such a way as to form flames, said device comprising at least one conduit for the flow of the fuel or the pre-mixture towards the combustion zone (3), and means for controlling the flow of the fuel or the pre-mixture into the combustion zone. Said device is characterised in that the control means are arranged in such a way as to define at least two control openings in the flow conduit, having a non-null determined longitudinal offset ?X so that, in response to an acoustic load formed upstream of the control means, the flames formed in the combustion zone (3), respectively at the outlet of each control opening, oscillate out of phase.