OUTDOOR-TYPE BOILER Russian patent published in 2017 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: outdoor-type boiler contains heat moistureproof housing 1, inside which the following is installed: three-way heat exchanger 2 with the outer surface 7 of the third stroke performed without thermal insulation, the blow torch 3, coaxially positioned with the three-way heat exchanger 2, fume collection tube 4, on which the chimney 5 is mounted. The heat moistureproof housing 1 also contains the air intake grid 6. At least one gas hose 8, made of flexible thin-walled corrugated pipe is wound on the uninsulated outer surface of the heat exchanger 7 along the helix.

EFFECT: gas extra heating, supplied to the combustion, gas flow rate decrease.

2 cl, 2 dwg