| 摘要 |
A magnetic filter including a tubular case which has a filter region divided along a flow passage into two smaller-dimensioned spaces in each of which a filter element of magnetic material is located. A magnetic means is also provided in one of the two spaces. In the smaller-dimensioned space including the magnetic means, only a portion of the lines of magnetic force produced by an electromagnetic coil connected to the tubular case is allowed to magnetize the filter element disposed in the same space, while the remaining lines pass through the magnetic means, so that the filter element is magnetized to a lesser degree. However, the filter element located in the other smaller-dimensioned space is magnetized by all the lines of magnetic force so that the same space has a higher capacity for attracting magnetic particles. Therefore, different types of magnetic particles contained in a fluid are attracted by the lowly-magnetized filter element and the highly-magnetized one, respectively. |
