EXTERNAL BOILER Russian patent published in 2016 - IPC F24H1/22 

FIELD: machine building.

SUBSTANCE: invention relates to hot water boilers production, particularly, to external accommodation boilers, and can be used in independent heating systems for heat insulation of equipment. External boiler consists of heat and waterproof housing 1, inside which three-way heat exchanger 2 with furnace (not shown) is installed, with reverse and straight lines 3 and 4, respectively, blasting burner 5 arranged coaxially with furnace, turbulence promoters 6, branch pipe 7 with chimney 8 and grate 9 for ambient air ingress, wherein three-way heat exchanger 2 third flue gas passage outer surface 10 is made without heat insulation, which enables additional heating of cold air supplied for combustion through grate 9.

EFFECT: technical result consists in additional heating of air supplied for combustion, better gas combustion with heated air, reducing gas consumption.

1 cl, 1 dwg