Electric motor has motor shaft and fan, where fan has base, and base is made from material, which is magnetically conductive material

摘要

The electric motor (1) has a motor shaft (3) and a fan (4), where the fan has a base (13). The base is made from a material, which is a magnetically conductive material. The open recesses (15,16) are formed at the base for a sensor unit (6). The electric motor has floor plates (17,18) and internal walls (19,20). A permanent magnetic area (5) of the internal walls and the floor plates of the base are arranged at a distance.