| 摘要 |
PROBLEM TO BE SOLVED: To simplify a structure for removing dust and the like accumulated on a dust collection surface of a filter element. SOLUTION: The dust filter is provided with a filter element 50 for filtering air and a case 42 for storing the filter element 50. The filter element 50 has liquid repellency for repelling liquid and liquid introducing passages 441, 44m, 445 for introducing external liquid to a side of the dust collection surface 57 of the filter element 50 and a discharge passage 49h for discharging the liquid flowing on the dust collection surface 57 of the filter element 50 to outside of the case 42 are formed in the case 42. COPYRIGHT: (C)2009,JPO&INPIT
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