FURNACE Russian patent published in 2001 - IPC

FIELD: heat supply of municipal buildings, uses wood waste of various fractional composition, flax boon, sunflower shell and other poor-quality low-ash fuel. SUBSTANCE: in the furnace including the furnace shaft lines by refractory brick, loading hopper, device for control of air supply, fire grate, ash bin and flame tube, according to the innovation, the loading hopper is made expansible downwards, a gas-suction ring is installed between the hopper and the furnace shaft, and a device for supply of water steam is mounted under the fire grate. EFFECT: enhanced efficiency. 6 cl, 2 dwg