Boiler for combustion of solid fuels, has outlet through which secondary air is added from outside in the region of swirl generating unit

摘要

The boiler has main structure, filling chamber for fuel with upper or lateral filling opening, and cooking grill with ash box. An annular secondary air supply device (9) provided in downstream of vortex chamber (7) has swirl generating unit (10) for axially directed flow of combustion gases (V) and/or the radially incoming secondary air (S). The secondary air is added from outside in the region of swirl generating unit through outlet.