SHELL-TYPE BOILER Russian patent published in 1999 - IPC

FIELD: water heating systems and hot water supply systems; individual heating systems. SUBSTANCE: shell-type boiler includes combustion chamber 1 with built-in burners 2 connected with flue tube 3 formed by ring-shaped cavity 4 consisting of smoke stack 5 and tube 6 of larger diameter; flue tube 3 is provided with turbulators 7 mounted inside it, expansion tank 8 with straight pipe line 9 being mounted in top portion. Combustion chamber 1 is provided with return pipe line 10 in its lower portion. Shell-type boiler is heat-insulated and is protected against weather by means of heat and hydraulic insulation 11. Combustion chamber 1 is provided with opening doors 12 protected with heat and hydraulic insulation for maintenance of burners 2 where registers 13 are mounted. EFFECT: low cost of thermal energy; reduced capital outlays for building of boiler houses; high safety of burning. 1 dwg