Rotary electrical machines

摘要

A rotary electrical machine comprising a rotor having a plurality of equi-angularly spaced magnets is disclosed. The rotor further comprises fan blades, which are advantageously arranged in pairs between adjacent magnets. Air that enters the rotor through the center thereof is impelled radially outwards by the fan blades cooling the magnets. In a further embodiment, a rotary electrical machine in accordance with the present teachings includes at least one concentrically mounted diffuser disc having a plurality of circumferentially disposed equi-angularly spaced diffuser fins. The diffuser fins convert velocity energy into pressure, improving pumping efficiency.