Miniature axial-flow blower

摘要

In applications of very small axial-flow blowers, there is an increasing demand for a low noise level with a sufficient air flow. According to the invention, this is achieved by designing the blades (7) of the impeller (2) so that they have a large angle of incidence ( alpha ) at the trailing edge. The curvature of the blade (7) is modest at the leading edge (E), increasing to a greater curvature at the trailing edge. <IMAGE>