HIGHER FLOW AXIAL IMPELLER Russian patent published in 2009 - IPC F04D29/38 

FIELD: engines and pumps.

SUBSTANCE: invention relates to axial higher-flow impeller (1) running in plane (XY) around axis (2) and comprising central hub (3) with its diametre smaller than that of driving motor (3a), multiple vanes (4) with base (5) and apex (6). Note here that vanes (4) features concave front (7) and convex rear (8) edges, projections of each edge onto impeller revolution plane being formed by segments of circle. Note also that vanes (4) consists of sections with aerodynamic profile decreasing length and bend shape increasing from the edge located opposite the hub. Mind that each vane (4) features, opposite the hub, a box-like section (20) that forms wide seat to receive motor (3a) with diametre equal, in facto, to that of aforesaid seat.

EFFECT: reduced noise, higher efficiency.

21 cl, 12 dwg