TANGENTIAL AND FLAMELESS ANNULAR COMBUSTION CHAMBER FOR GAS TURBINE ENGINES Russian patent published in 2017 - IPC F23R3/06 F23R3/46 

FIELD: engines and pumps.

SUBSTANCE: method of reactive substances injection into the gas turbine engine combustion chamber is performed in a combustion chamber, comprising an outer shell, a perforated front wall, an annular opening, the first and the second nozzles; the procedure is performed in the following sequence. A premixed fuel-air mixture is injected into the annular volume of the combustion chamber through the first nozzles distributed over the circumference and located in the first plane in a direction forming an angle with a tangent to the outer shell, creating a flow field through the annular volume, rotating around the combustion chamber axial line. The specified flow field passes through the annular volume in the direction away from the perforated front wall to the annular opening. Only fuel is injected into the said flow field through the second nozzles distributed over the circumference, and located in the second plane in a direction forming an angle with a tangent to the outer shell. The air coming out of the compressor through the perforated front wall is injected into the said flow field.

EFFECT: invention provides a step-by-step air-fuel effect to improve combustion and reduce emissions of NO_x and CO, optimum mixing of fuel and air, and also creates combustion conditions that reduce the amount of polluting emissions, thereby reducing the need for expensive pollution control devices, as well as improves ignition and flame stability and reduces control problems, reduces vibration.

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