| 摘要 |
<p>Electronically commutated DC motors for driving rotary pumps, including centrifugal pumps, and having reduced structural volume as a result of the axial arrangement of the magnets and giving rise to radial forces acting on the bearings on the pumps and an unbalance at the bearing, resulting in a shortened working life; other designs result in increased overall structural depth. Theses drawbacks give rise to designs in which the part-windings (7a,7b) of the stator winding are arranged, with reference to the impeller (1), in front of and behind the permanent magnets located in or on the rotor (5).</p> |
