AIR HEATING UNIT Russian patent published in 2020 - IPC F24H3/00 F23B10/00 

FIELD: heating.

SUBSTANCE: air heating unit (AHU) relates to heating systems of various objects and is intended mainly for use in heating of ventilation air supplied to the shaft. AHU comprises air heater consisting of three stages arranged in series in flue gas duct. In a furnace under a combustion chamber of vortex type with gas outlet openings and secondary blowing nozzles, which are oriented tangentially to the conditional body of rotation of the formed vortex with the horizontal axis passing through the gas outlet openings, a layer furnace device is installed. Intake blowers of the furnace are connected to air intakes and to the channel of cooled flue gases, and thus low-temperature combustion mode is provided.

EFFECT: technical result consists in providing reliability, environmental friendliness and efficiency of AHU with possibility of burning various coals and carbon-containing wastes.

10 cl, 2 dwg