BURNER DEVICE Russian patent published in 2004 - IPC

FIELD: combustion chambers of gas-turbine engines. SUBSTANCE: burner device includes external cylindrical housing, cylindrical bushing with fuel supply line forming circular conduit for air passage, axial blade vortex generator, system feeding fuel for preliminary mixing in circular conduit with possible addition of another fuel line, straightening vane and pinch as continuation of external cylindrical housing. Cylindrical bushing with fuel supply line houses muffler in the form of hollow cylinder which open end faces burning zone. In this case distance l₂ from end section of external cylindrical housing to section of fuel feed for preliminary mixing comes as (n-0,3)*U/f<l₂<(n+0,3)*U/f, where n=0, 1, 2, 3, etc; U is mean axial velocity of air in burner device; f is frequency of pressure pulsations emerging in combustion chamber. Distance L₃ from end section downstream of external cylindrical bushing to end section downstream of cylindrical bushing with fuel supply line lies in interval l₃/D≥0,25,, where D is inner diameter of external cylindrical housing. Relation of outer diameter d of cylindrical bushing with fuel supply line to inner diameter D of external cylindrical housing is implemented in interval d/D=0.35-0.65. EFFECT: improved ecological characteristics and widened range of stable, pulsation-free operation of burner device. 2 cl, 1 dwg