SMOKE REMOVING AXIAL FLOW FAN Russian patent published in 2002 - IPC

FIELD: mechanical engineering; ventilators and fans. SUBSTANCE: can be used in designing of fans operating in hot gas media. Proposed fan has additional impeller - blade wheel 10 installed in hub of working impeller and housing to feed atmospheric air to input of said wheel which directs air into space between housing and perforated ejecting screen 15. Air is ejected by hot gas through holes 16 with conical lips 17. Velocity of hot gas exceeds air velocity at outlet of blade wheel 10. EFFECT: increased heat resistance of fan. 1 dwg