FIELD: electricity.
SUBSTANCE: invention is related to the field of electric machines. The electric machine has at least one radial cooling groove (16) and axial cooling channels. The first cooling channels (18) with their central axis pass at another radial height in regard to a rotor axis (11) in comparison with the second cooling channels (19). In at least one radial cooling groove (16) there is a spacer (29) by which the first coolant flow (28) from the first cooling channels (18) can be directed to one of the second cooling channels (19). Due to that the second partial packet (T2) in the flow direction can be supplied with colder air when it passes through the first partial packet (T1) in the cold area, for example, close to the shaft.
EFFECT: provision of even cooling for the electric machine rotor.
13 cl, 4 dwg
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