| 摘要 |
PURPOSE:To improve the operability by making a part of frame of filter to be unwelded on a filter net part, constructing the unwelded part in such a way that a part is separable from the other part of frame, and inserting an electrically charged filter, etc., between the unwelded frame and the net part. CONSTITUTION:The air filter 6 consists of the net part and the frame part 7, and the frame part 7 is constituted of welded parts 7a and unwelded parts 7b, 7c, and one end part of the unwelded part is separable from the other part of frame, and another filter 8 different from the net part of the air filter 6 is inserted between the unwelded frame parts 7b and the net part. As a result, the air filter of high collective efficiency is obtained, which is easily and surely assembled and exchanged. |
