ELECTRIC MACHINE WITH SYSTEM OF AIR COOLING Russian patent published in 2011 - IPC H02K1/20 H02K5/20 H02K9/06 

FIELD: electricity.

SUBSTANCE: invention refers to the field of electric engineering, namely to cooling system of electric machines of cylindrical design. Proposed electric machine comprises stator, including winding of stator, body for stator location, rotor and air gap, having, in general, a cylindrical configuration. Multiple radial first channels of cooling gas arranged along circumference is provided in the stator core. Jets of cooling gas are directed in the area of front part of winding, which is relatively distanced from stator core in order to provide for its forced cooling. Flows of cooling gas are directed to sections of front part of winding, which is located between areas with forced cooling of front part of winding and according front surface of stator core. At the same time electric machine comprises at least one of injection and suction fans, and in specified body for stator location there are the first, second, third and fourth openings. Besides, injection fan is connected along flow of cooling gas with specified first channels of cooling gas, and also to specified first, second, third and fourth openings of specified body; and suction fan is located in connection along flow of cooling gas with those spaces in electric machine, which receive cooling gas, released from air gap and specified first, second, third and fourth holes. At the same time specified first and second holes have smaller diametre than specified third and fourth specified holes of body for stator location.

EFFECT: provides for intense cooling of front part of electric machine stator winding and elimination of damage of insulation of winding wires, and also low consumption of power in proposed design of cooling system suitable for electric machines with high speeds of rotation.

19 cl, 1 dwg