HEATING BOILER Russian patent published in 1998 - IPC

FIELD: heating houses, garages, hangers and industrial buildings. SUBSTANCE: front and rear walls of furnace are inclined relative to each other and are provided with supply and exhaust ports located one above other. Ports are also inclined. Ports are used to connect cavity of furnace with surrounding medium through air duct on front side and with smoke flue on rear side. Smoke and gas afterburning chamber is provided between air duct and smoke flue. Upper roof of afterburning chamber is located above upper edge of ports. Air duct is mounted on the outside of front wall of furnace and is provided with opening damper in its lower portion to reduce losses of heat and enhanced completeness of combustion. EFFECT: enhanced efficiency. 7 cl, 3 dwg