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

FIELD: power industry.

SUBSTANCE: external boiler installed on external part of the building contains the gas burner device, the heat exchanger with one direct and two return lines, a funnel in the lower internal part of which the heat exchanger of condensate part is installed inside which the cap is installed, and at the funnel base the hatch for soot cleaning and the condensate discharge tube are installed. The direct line of the boiler is connected to the direct line of heating system of the building, the boiler also contains the circulation pump with the suction and supply lines, and between the boiler return line and the return line of heating system of the building the automatic through passage valve is installed, between the supply line of the circulation pump and the direct line of heating system of the building the automatic through passage valve is installed, the heating system of the building contains the deaerating and expansion tank.

EFFECT: decrease of costs of heat production and increase of overall performance.

1 dwg