Impeller drive for variable-speed drives, especially in the case of inertia-mass drives

摘要

The invention relates to the cooling of an electrical drive motor (1) for centrifuges (2). The impeller (3) is coupled to the motor shaft (5) via a freewheel device (4). If the rotation speed falls, the impeller can continue to run at a high rotation speed (nL) by means of its inertia energy, and ensure adequate cooling. <IMAGE>