Patent ID: 7994667
Filing Date: 2011-08-09
Classification: H02K

Abstract:
1. An air cooling arrangement for an electric engine, the electric engine comprising: a rotor; a stator disposed co-axially to the rotor; a partition disposed between the rotor and the stator and extending along a complete axial length of the rotor and mounted on the rotor so as to be in co-rotational communication with the rotor, the partition providing a segregated cooling air flow so as to prevent a radial flow of cooling air from the rotor to the stator; and at least one fan configured to provide cooling air to the rotor and the stator, wherein the partition partitions and segregates the at least one fan into an inner fan and an outer fan by extending between the inner fan and the outer fan, wherein the inner fan is disposed between the partition and the rotor and configured to produce a cooling air to cool the rotor, and wherein the outer fan is disposed between the partition and the stator and configured to produce a cooling air to cool the stator.