| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a filter device capable of obtaining higher cleaning effect to a filter.SOLUTION: A filter device includes a filter rotatable so that a filtration surface is moved in the circumferential direction, and a flow straightening part having a plurality of regions having mutually each different distance to the filtration surface on a facing surface facing to at least a part of the filtration surface.</p> |
