FIELD: machine building.
SUBSTANCE: combustion chamber is intended for use under method of gradual change of fuel delivery, at that fuel parts delivered to multiple points of fuel supply to the combustion chamber vary according to the required power. The combustion chamber contains multiple combustion cavities in the trapped vortex, pre-mixing device in combination with multiple combustion cavities in the trapped vortex. The pre-mixing device contains input pre-mixing device and multiple pre-mixing vortex devices. The premixing input device has main inlet hole, being start point of the main flow passing through the combustion chamber, and multiple concentric having aerodynamic shape rings located before the said multiple combustion cavities in the trapped vortex. Each ring has internal channel, and additionally has multiple holes for fuel injection, so fuel flows from the internal channel to the input fluid flow near the said ring. Each pair of rings creates ring channel between them. The pre-mixing vortex device is connected with the combustion cavity in the trapped vortex, and contains the inlet hole for fuel, the inlet hole for air, chamber mixing fuel and air, and output hole for air-fuel mixture. The inlet hole for fuel contains fuel header with diffusion plate located in it. The air-fuel mixture in injected directly in the combustion cavity in the trapped vortex in the direction tangential relatively to the recirculating flow inside the combustion cavity in the trapped vortex. The fuel flow passing through each of multiple vortex devices can be changed independently. Directly after pre-mixing input device and before the said multiple combustion cavities in the trapped vortex the cone fairing is located, it is made with possibility of nozzle creation and acceleration of the pre-mixed mixture leaving the pre0mixing input device.
EFFECT: enhanced operation characteristics.
19 cl, 15 dwg
