| 摘要 |
PURPOSE:To supply a magnetic fluid equally to both pole rings by making pipe resistance to one pole ring which is apart from a supply source, equal to pipe resistance to the other. CONSTITUTION:Pole rings 21, 21A each having an annular gap 22 are fitted over a rotary shaft 20 leaving a space between them in the axial direction. A housing 27 made of a non-magnetic material is provided on the outer periphery of the pole rings 21, 21A. And, an annular magnetic-fluid storage tank 28 to which supply ports 26, 26A are connected at an equal distribution rate, is provided in this housing 27, and a liquid feeding means 30 is connected to the storage tank 28. By this structure, a magnetic fluid can be supplied equally to both the pole rings 21, 21A. |
