HEAT GENERATOR - WOOD WASTE RECOVERY UNIT Russian patent published in 2001 - IPC

FIELD: wood-working industry; heat-power engineering for heating living and industrial houses. SUBSTANCE: heat generator has fuel bin, furnace with combustion chamber and ash receiver, unit for delivery of fuel from bin to furnace, unit for motion of fuel inside furnace and fuel delivery control unit. Unit for delivery of fuel from bin to furnace is made in form of screw feeder having two sections: one section is located inside bin and other section is located between bin and furnace; both sections have similar screw, either right-hand or left-hand. Unit for motion of fuel inside furnace is made in form of third section of screw feeder; direction of screw of this section is opposite to first and second sections. Fuel delivery control unit includes two time relays DELIVERY and PAUSE connected to electric motor of drive of fuel delivery unit. Connected to outlet hole of furnace is heat exchanger; combustion product outlet of this heat exchanger is connected with inertial ash trap and outlet of this ash trap is connected in its turn with smoke exhauster. Secured immovably on inertial ash trap is additional heat recovery unit made in form of water jacket. EFFECT: enhanced efficiency. 3 cl, 6 dwg