FIRE-TUBE BOILER WITH REVERSE FLOW OF FLUE GASES AND WATER-COOLED BOTTOM OF FURNACE CHAMBER Russian patent published in 2025 - IPC F24H1/00 F22B7/12 

FIELD: industrial power engineering.

SUBSTANCE: invention relates to the field of industrial power engineering, namely to designs of fire-tube boilers with reverse flow of flue gases. Fire-tube boiler with reverse flow of flue gases and water-cooled bottom of furnace chamber contains combustion chamber, furnace chamber bottom, water-cooled bracket connected by one side with furnace chamber bottom outer surface, and an outwardly bent spherical element connected to the other side of the water-cooled bracket. Along the entire length of the bracket circumference there are holes. Furnace chamber bottom is spherical. Bending radius of spherical element repeats radius of bending of spherical bottom of furnace chamber, and external surface of furnace chamber bottom, water-cooled bracket and spherical element, which are connected to each other, form zone of boiler water passage.

EFFECT: increasing reliability and service life of the boiler and providing effective cooling of the bottom of the furnace chamber.

4 cl, 3 dwg