HEATING BOILER Russian patent published in 2015 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: furnace volume enveloped by a U-shaped housing includes a gas burner device, a secondary air supply control, heat exchange elements made in the form of hollow plates tightly attached to internal sides of side walls of the boiler housing and adjacent in turn to the front or rear wall and with that interconnected through hollow space to a heat exchange element made as hollow and U-shaped and tightly fixed on the outside of the housing wall, as well as a draft stabiliser installed in the upper part and including hatches in its lower and upper walls for passage of fuel combustion products, a gate installed above the hatch of the lower wall and preventing emergency extinction of burners, a hinged curtain stabilising the draft in a flue pass, and a temperature sensor switching off combustible gas supply at blow-out of flame in the boiler.

EFFECT: improving operating efficiency of the device.

14 cl, 1 tbl, 2 dwg