AXIAL-BLOW BLOWER Russian patent published in 2009 - IPC F04D19/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to mechanical engineering, particularly to structures of axial-blow blower's blades. Specified technical result is achieved in axial-blow blower, blade of which is described by that front and back edges are formed by intersection of two parabolas, tangent to the circumference at a sharp angle at front and back edges, joined on back edge with half-rounds, herewith blade end is forward-curved at angle β≥45°; and adjacent blades are connected to each other by damping device.

EFFECT: provides at its application of coefficient of efficiency increasing of blower and noise reduction during its operation.

2 dwg