Patent ID: 8525375
Filing Date: 2013-09-03
Classification: H02K

Abstract:
1. An electric machine comprising: a stator having an outer circumference; spaced apart first walls arranged about the outer circumference providing generally parallel first channels, and a second wall adjoining the first walls and arranged about the outer circumference providing a second channel in fluid communication with the first channels and providing a tortuous fluid flow path about the circumference, the first and second channels having an inner surface; a structure provided within at least one of the first and second channels and having an outer surface spaced radially outward from the inner surface and at least partially defining the tortuous fluid flow path between the outer and inner surfaces; and at least one orifice plate spaced from the second wall and including multiple exits, the stator including an end turn extending from a main stack of the stator, the exits provided near the end turns and configured to spray the cooling fluid onto the end turns.