CLOSED ELECTRICAL MACHINE AND COOLING SYSTEM OF CLOSED ELECTRICAL MACHINE Russian patent published in 2016 - IPC H02K9/19 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, electrical machine building. Machine comprises a stator mounted in crankcase, within which rotor is mounted to a shaft rotatably supported by bearings and two oil distributor ring rotor U-shaped cross section with radial and axial holes and two oil distributor stator washers, which are made on perimeter of sectorial slots, two fittings oil supply and two nozzles discharge oil. In stator core along its perimeter there are through holes parallel to axis of electrical machine. In rotor shaft along its axis there is a dead-end axial hole and radial holes on journals of shaft, open to blind axial hole of rotor. Oil distributor ring fixed to rotor shaft journals to communicate with cavities of rings on radial openings of shaft journals. Oil distributor stator washer fixed to ends of stator to communicate with sector slots through holes on perimeter of stator, offset by an angle equal to half angle of groove sector. One oil supply nozzle is connected to input of blind axial hole in rotor shaft and other - to crankcase.

EFFECT: technical result consists in improvement of specific power and service life due to use of efficient cooling system.

7 cl, 1 tbl, 7 dwg