POWERFUL MULTI-FUNCTION COUNTERFLOW SUCTION-FAN Russian patent published in 2008 - IPC F04D29/44 

FIELD: engineering industry; air cleaning section.

SUBSTANCE: unit represents powerful multi-function counter flow suction-fan which includes as follows: frame (1), impeller (2), impeller blades (3), intake port (4) counter-flow, air outlet (5) on the side wall. Its main feature is that the intake port (4) counter-flow, organized in the axial side panel of the frame is found on the opposite side of axial side of the impeller surface. Impeller blade edges (3) are provided with parting side plates (6).

EFFECT: high capacity of pollutants removal; powerful air circulation; energy saving; high performance; low noise level; multiple functions; damage and corrosion risk decreasing of the wetted parts inside the frame.

7 cl, 16 dwg, 10 ex