CONDENSATION BOILER OF EXTERNAL INSTALLATION Russian patent published in 2012 - IPC F24H1/00 

FIELD: power engineering.

SUBSTANCE: condensation boiler of external installation comprises a hydraulically and thermally insulated body, inside of which there is a gas burner device, a heat-tube heat exchanger with direction and reverse lines, a coaxial flue connected to a stack. Additionally the boiler comprises a condensation heat exchanger and a centrifugal fan, at the same time the coaxial flue with the condensation heat exchanger are installed downstream the heat-tube heat exchanger in the stack base, and in the upper part of the hydraulically and thermally insulated body, downstream the hest-tube heat exchangers there is a centrifugal fan capable of overcoming additional resistance of smoke fumes movement in the coaxial flue.

EFFECT: reduced boiler dimensions, cheaper production of boilers and preservation of boiler operability in case of power loss.

2 dwg