Dynamoelectric machine having air/liquid cooling

A wind generator, comprising:

• a housing having an outer jacket and an inner jacket which together form a cooling jacket defined by an axial extension, said inner jacket facing the stator and having at least one section arranged at a distance from the outer jacket;
• a shaft;
• a bearing assembly supporting the shaft, said bearing assembly having bearing shields and bearings arranged in the bearing shields, said bearing shields disposed in spaced apart relationship to define an axial distance which equals the axial extension of the cooling jacket, said bearing shields forming together with the housing a closed interior having at least one closed inner cooling circuit;
• a stator arranged in the housing and having a laminated core and a winding system, said winding system having winding heads arranged on end faces of the stator, said laminated core of the stator having an outer circumference to define a yoke rear for support of support points of the inner jacket, with the inner jacket comprising radially inward-facing substantially axially extending cooling fins sized shy of the yoke rear;
• and
• a rotor arranged in the housing and having a laminated core, said rotor being connected in fixed rotative engagement with the shaft,
• wherein the laminated core of at least one member selected from the group consisting of the stator and the rotor has axial cooling channels.