WATER HEATING BOILER Russian patent published in 1995 - IPC

FIELD: heat power engineering. SUBSTANCE: combustion products, which occur due to burning out of fuel in furnace 3, heat the wall of inner housing 2 and set of heat exchanging tanks 4 wherein a gravitation movement of the heat carrier occurs. Heated heat carrier is fed from tank 4 to the top part of the water jacket through L-shaped pipes 6. Further, partially cooled combustion products enter U-shaped circulating pipes 7. EFFECT: enhanced efficiency. 1 dwg