Patent ID: 8860265

Claim:
An electric motor apparatus comprising: a first compartment housing an electric motor mounted on a rotating shaft; a second compartment housing an electric circuit adapted to connect said electric motor to a power supply source; and a cooling system adapted to dissipate heat generated by said electric motor apparatus, comprising a fan mounted on said rotating shaft in a position adjacent to said second compartment and on an opposite side of the shaft with respect to said first compartment; at least one finned heat exchanger adapted to dissipate heat generated by said electric circuit inside said second compartment; an additional heat exchanger comprising a pipe bundle connected to a wall of said first compartment so as to extend along a longitudinal extension of said rotating shaft; and an air conveyor operatively associated with said fan at a conveyor inlet, and forming a ventilation channel enclosing air in operative contact with the finned heat exchanger between the conveyor inlet and inlet of the additional heat exchanger.