HOT-WATER CAST-IRON MULTIPURPOSE BOILER Russian patent published in 2001 - IPC

FIELD: heating of dwellings. SUBSTANCE: boiler has a furnace of round section turning into square section in its upper part. Surface of furnace carries water-heating section where two auxiliary sections with cover are positioned. Sections are provided with hollow partitions and hand-holes designed for cleaning of partition surfaces. Hand-holes are closed with covers and screens in process of operation, Water channel of furnace is coupled to water channel of sections. Hole coupled to heating system is located at bottom of furnace. Auxiliary branch pipe coupled to smoke flue is mounted in upper section. Other branch pipe coupled to smoke flue is installed in lower section. Both branch pipes are provided with throttle valves. EFFECT: improved convective heat exchange of gases. 4 cl, 4 dwg