| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration of a filtering function of a filter element.SOLUTION: A plated filter element 27 is stored in a housing 23. Holding pieces 34, each of which is used to maintain a space between an inner wall surface of the housing 23 and a pleat of an end part of the filter element 27, are provided between the inner wall surface and the pleats. Each holding piece 34 is integrally formed with an inner surface of the housing 23.SELECTED DRAWING: Figure 4 |
