Patent ID: 9748821
Date: 2017-08-29
CPC Classifications: H02K

Claim:
1. A cooling arrangement for a hollow internal stator of an electric machine, the stator including an internal surface, the cooling arrangement comprising: at least two cooling plates each provided with a contact surface so configured as to be applied to the internal surface of the stator and with a generally U-shaped tube receiving channel; pressure-applying means configured to bias the at least two cooling plates onto the internal surface of the stator, the pressure-applying means including a dovetail key inserted in a dovetail keyway provided in the internal surface of the stator; a pressure-applying plate being configured to be mounted to the dovetail key to apply pressure onto adjacent cooling plates; a cooling tube configured and sized as to be inserted in the tube receiving channel of the at least two cooling plates; wherein the cooling tube includes an inlet and an outlet allowing cooling fluid therein to thereby cool the stator.