FURNACE Russian patent published in 1994 - IPC

FIELD: heat power engineering. SUBSTANCE: furnace has combustion chamber 1 with fire grate 2 and perforated partition 3, after-burner chamber 4 which is brought in communication with combustion chamber 1 by means of ports 5 and 6 and gate 7. Partition 3 divides combustion chamber 1 in height. When small amount of fuel is charged, partition 3 divides chamber 1 in height and is locked with dowel pin 13. Gate 7 is used to regulate passage area of chamber 4 and port 4 depending on mode of operation of furnace. EFFECT: enhanced efficiency. 14 cl, 2 dwg