Cooling System for a Motor and Associated Electronics

A cooling system for a motor having control circuitry and including a motor housing surrounding the motor, the motor driving at least one radial fan at one end thereof for directing airflow across the motor housing, the cooling system comprising:

• a fan housing mountable to the motor housing at the one end of the motor, said fan housing defining a cavity surrounding the radial fan and configured to direct airflow from the fan axially across the motor housing, said fan housing further defining a diverter chamber radially outboard of the fan, sized to divert a portion of the airflow away from the motor housing;
• and
• a base having a heat sink for contacting the control circuitry, said base defining a plenum in communication with said diverter chamber and a channel in communication with said plenum and said heat sink to direct the diverted airflow across the heat sink.