Surface-cooled enclosed electrical machine has short-circuit ring providing closed annular chamber for reversal of cooling medium flow direction at one end of rotor

摘要

The electrical machine has a rotor body provided with cooling medium channels (7a,7b) with opposing cooling medium flow directions (V,R) arranged around the rotor axis, with the cooling medium circuit coupled to a supply and distribution device provided by an adapter (8a,8b). The cooling medium flow direction is reversed at the rotor end without an adapter within a closed annular chamber provided by the short-circuit ring (9).