| 摘要 |
<p>PURPOSE:To provide a filter which is structurally stable and excellent in electrical independence by mounting a conductive filtering plate on the mounting portion of an insulative support while leaving part of an opening uncovered, and attaching electrodes to the conductive filtering plate, and stacking these members inside an outer tube. CONSTITUTION:An insulative support 31 is molded into e.g. a rectangular shape and has an opening 33 formed at its center portion as seen from the direction of circulation of exhaust gas, with a mounting portion 32 of a prescribed width formed around the opening. A conductive filtering plate 34 is mounted on the mounting portion 32 of the insulative support 31 with part of the opening 33 left uncovered. Electrodes 35 are disposed in two portions, each with an overlap with the conductive filtering plate 34, and are integrally secured to the insulative support 31. A number of such assemblies are rotated by e.g. 180 degrees without making the openings 33 overlap one another, and are stacked one atop another inside an outer tube 41 made by e.g. a steel pipe. A filter is thus obtained which is structurally stable and excellent in the electrical independence of its conductive filtering plate 34.</p> |
