WATER-HEATING BOILER Russian patent published in 2013 - IPC F23B40/00 F24H1/46 

FIELD: power engineering.

SUBSTANCE: water-heating boiler comprises a unit of fuel supply, comprising a hopper and a feeder, a heat exchanger, a furnace with a fire grate, where the first air duct channel is connected, stretching via the bottom part of the heat exchanger, an afterburning unit communicated with the furnace and made of fireproof bricks, arranged in the cavity of the heat exchanger and comprising a hollow body, where an afterburner is placed with holes for gases arrival, and communicated with the second air duct channel stretching via the lower part of the heat exchanger, the feeder comprises three open hollow coaxially installed cylinders with longitudinal cuts, geometric dimensions of which correspond to geometric dimensions of the hopper outlet, at the same time the second and second cylinders are installed with the possibility of rotation.

EFFECT: invention makes it possible to increase calorific value and duration of boiler operation.

20 cl, 4 dwg