HEATING DEVICE Russian patent published in 1999 - IPC

FIELD: domestic ovens for hard fuel. SUBSTANCE: heating device has body formed by front wall with fuel charging door and branch pipe with adjustable air supply to heating chamber, rear wall with branch pipe of adjustable smoke offtake, by lower horizontal surface (bottom), and upper and side walls. Body also includes heating chamber arch made as horizontal partition which divides internal volume of body into two communicating cavities, namely, heating chamber and gas conducting chamber. Arch has hatch, air heat-exchange tubes with open ends communicating with surrounding air, crossing above heating chamber arch, staggered along side walls, and in holes on opposite side walls. Body also contains air ducts with holes, grate and ash pit with door. Hatch of heating chamber arch is positioned on side of rear wall and provided with box arranged above it. Box has open end face and forms auxiliary cavity, fuel gas afterburner, communicating with heating chamber cavity from one side and with gas- conducting chamber on side of front wall, from the other. Air ducts are positioned n heating chamber cavity, vertically along rear wall with holes at entry into fuel gas afterburner. Every air duct is secured with its open end in hole on lower bottom. Internal cavity of air ducts communicate with surrounding air. Box is provided with axle and may be turned towards front wall. Partition of heating chamber arch divides internal space of body in half. Every air duct is provided with ring positioned from underside of holes. Air ducts have threaded open ends, each end being fitted with union nut and changeable washers of different internal diameter. Partition of heating chamber arch, grate and box with axle are manufactured of heat-resistant steel. Front wall of body is inclined, and it is provided with inspection window made of fireproof glass. EFFECT: improved operating parameters. 6 cl, 2 dwg