ELECTRIC MACHINE OPERATING IN CONDITION OF HIGH DUST CONTENT Russian patent published in 2004 - IPC

FIELD: electrical engineering, possibly development of electric machines for ground transport vehicles.

SUBSTANCE: electric machine includes fan and dust separator arranged in zone of bearing assembly boards provided with annular protrusions with radial ducts. Dust separator is in the form of inner annular protrusion having in addition annular turning normal relative to axes of radial ducts and designed for separating pure air. Annular protrusion is arranged in zone of shaft with central cavity having in wall radial ducts for passing contaminated air. Annular protrusion in zone of which fan is mounted is arranged at outer side of second bearing assembly board.

EFFECT: improved design due to cooling armature not only with use of pure air but also with use of contaminated air.

5 cl, 1 dwg