MULTIMODE FUEL SPRAY DEVICE, COMBUSTION CHAMBER AND JET TURBINE ENGINE Russian patent published in 2011 - IPC F23R3/28 

FIELD: power industry.

SUBSTANCE: multimode fuel spray device for combustion chamber includes two coaxial fuel spraying systems fed from two circuits, primary circuit with constant flow rate and secondary circuit with variable flow rate. Multimode fuel spray device includes spraying head. Secondary circuit is interconnected with annular distributing chamber containing many outlet fuel holes uniformly distributed in circumferential direction. Primary circuit includes at least some part of the channel passing near distributing chamber and intended for its cooling. The above part of channel includes outer radial annular section provided on the outer side in relation to distributing chamber, and inner radial annular section provided on inner side in relation to distributing chamber.

EFFECT: reducing coking by cooling the fuel supplied from secondary circuit owing to continuous circulation of fuel supplied from primary circuit.

11 cl, 7 dwg