| 摘要 |
<p>PROBLEM TO BE SOLVED: To clean an air filter without producing waste such as a core material upon exchange of the air filter and without performing removal work, etc., for the air filter. SOLUTION: The present apparatus is adapted such that a long air filter 17 is provided so as to cover substantially the entire region of an air intake hole 16, which filter 17 is formed freely to be wound from one side edge to the other side edge. Herein, there is provided demountably a filter container 41 for demountably housing the long air filter 17 wound around the one side edge under conditions without any core material wound around the one side edge, and the other side edge of the air filter 17 is formed to be freely rewound.</p> |
