ELECTRICAL MACHINE STATOR Russian patent published in 2009 - IPC H02K1/20 H02K9/04 

FIELD: electricity; motors and pumps.

SUBSTANCE: turbo generator stator with effective coil and teeth gas cooling contains housing (1) where core (2) with winding (3) is situated. The core consists of laminated packs (5) and vent ducks (7) formed by ventilation spacers (8) and closed from the side of stator core bore. The high pressure chamber (9) is located between the housing and core. The air ducts (10) are situated in the high pressure chamber, on the external side of the core along the whole its length. The distance between ducts is one tooth division. At one side, the air ducts are connected with ventilation ducts and with low pressure chamber from the other side. The above low pressure chamber is located within the head part of stator winding. The ventilation spacers are installed in the tooth area in order to ensure cooling gas direction shifting in axial direction to the adjacent ventilation duct through the open-end openings (6). The yoke area has ventilation spacers installed. They are installed so that to allow cooling gas flowing through the even ventilation ducts from high pressure chamber to the tooth area. The cooling gas flows though the odd ventilation ducts from the tooth area to the air ducts.

EFFECT: improved cooling of teeth and winding along whole length and circle of stator core due to heat transfer intensification.

4 cl, 4 dwg