HOUSEHOLD FURNACE Russian patent published in 1996 - IPC

FIELD: household boilers for local heating systems, hot water supply systems and preparation of food. SUBSTANCE: household furnace has furnace chamber guarded by heat exchange walls cooled with water, gas duct whose upper horizontal wall is made in form of plating, oven, thermal cabinet, expansion tank-accumulator with water heater mounted on risers and offtake. Located in gas duct perpendicularly to gas flow are horizontal heat exchange tubes brought in communication with water volume of boiler. Located in gas duct under plate in spaced relation to furnace chamber and smokebox is horizontal partition made of two non-cooled metal sheets which divides gas duct into upper and lower gas passages. Fitted between sheets 13 before oven is three-leaved gate. Guard plates are secured on risers. Boiler is provided with branch pipes for feeding water to water volume, water heater and discharging hot water to consumer and connecting to local heating system. EFFECT: enhanced efficiency. 5 dwg