EXTERNAL BOILER Russian patent published in 2016 - IPC F24H1/00 

FIELD: heating.

SUBSTANCE: invention relates to production of hot water boilers, particularly, to recovery of external accommodation, and can be used in independent heating systems with forced and natural circulation of heat carrier. External boiler consists of one thermal-hydro-insulated body, inside of which there are arranged one above the other two-upper and lower tube heat exchangers, each being provided with reverse and straight lines of three-way design, each heat-tube heat exchanger is equipped with its blow burner, lower heat-tube heat exchanger comprises one branch pipe of flue gases, and upper heat-tube heat exchanger includes two branch pipes of flue gases of different diameter installed with possibility of combining with the help of gas duct in one pipe, lower heat-tube heat exchanger includes carbon dust collector and on branch pipe of flue gases of the upper heat exchanger there is mounted smoke stack, herewith said pipes has larger cross-section equal to the cross-section of chimney.

EFFECT: technical result provides increase of boiler performance and reduction of costs for heat production.

1 cl, 1 dwg