WATER-HEATING BOILER AND METHOD OF ITS OPERATION Russian patent published in 2012 - IPC F24H1/08 

FIELD: power engineering.

SUBSTANCE: boiler comprises a vessel made of two coaxial shells, in a circular space between which there are flue pipes of a convective bundle and a circuit of coolant heating, a combustion chamber formed by a cavity of an internal shell, a working thermostat, a recirculation pump, a fuel hopper and a burner with a cone-shaped element. In the lower part of the circular space of coaxial shells the boiler comprises a vertical shell, which communicates with the combustion chamber on top, a vortex combustion chamber placed in the vertical shell, where the specified burner is installed, a flame reflector, an automatic unit for supply of a fuel-air mixture, a vacuum-vortex gateway, an air gate. During boiler operation air from a supercharging fan is supplied to the vacuum-vortex gateway and through it into a pneumatic drive cavity, and the other part of air from the vacuum-vortex gateway under pressure arrives into a pneumatic conveyor, tangentially via a channel arranged at the angle of 45 degrees, fuel is supplied into a created zone of pneumatic conveyor evacuation, where fuel and air are mixed, and the fuel and air mixture is supplied under pressure into the burner.

EFFECT: invention provides for more efficient operation of a boiler.

6 cl, 8 dwg