Attachment cooler of a dynamo-electric machine with plate coolers

An attachment cooler of a dynamo-electric machine, said attachment cooler being embodied as a heat exchanger and comprising:

• a primary circuit for flow of a medium;
• a secondary circuit separate from the primary circuit for flow of a medium, said secondary circuit including a central channel and a waste air channel;
• a casing including receiving openings and designed to accommodate the central channel and the waste channel of the secondary circuit, with the waste channel leading out to a side of the casing;
• and
• exchangeable modules embodied as plate heat exchangers and insertable in the receiving openings of the casing, each of the modules designed for individual removal, without a flow bypass being created by unoccupied ones of the receiving openings.

A dynamo-electric machine, comprising:

• a stator including a winding system;
• a rotor interacting with the stator to cause the rotor to rotate about an axis;
• an attachment cooler embodied as a heat exchanger for cooling the stator and the rotor, said attachment cooler comprising a primary circuit for flow of a medium, a secondary circuit separate from the primary circuit for flow of a medium, said secondary circuit including a central channel and a waste air channel, a casing including receiving openings and designed to accommodate the central channel and the waste channel of the secondary circuit, with the waste channel leading out to a side of the casing, and exchangeable modules embodied as plate heat exchangers and insertable in the receiving openings of the casing, each of the modules designed for individual removal, without a flow bypass being created by unoccupied ones of the receiving openings;
• and
• a casing including openings, which correspond to supply air and waste air openings of the attachment cooler such as to set up the primary circuit such that the primary circuit is able to be cooled back down via a cooling airflow of the secondary circuit.