ELECTRICAL MACHINE STATOR COOLING SYSTEM Russian patent published in 2005 - IPC

FIELD: electrical and electromechanical engineering; cooling systems for electrical machine stator.

SUBSTANCE: proposed cooling system has stator core 1 whose slots 3 accommodate winding 2 and cooling ducts formed by means of distance pieces 5 and arranged for communication with space between stator back and frame. Novelty is that slots 3 are provided with sub-slot ducts 4 communicating with space behind butt-end parts of stator core 1; installed in cooling ducts are U-shaped distance pieces 6 whose side surfaces are facing stator bore; there distance pieces enclose sub-slot ducts 4.

EFFECT: enhanced cooling efficiency for all active parts of stator thereby reducing material input and cost of machine.

1 cl, 2 dwg