| 摘要 |
The present invention relates to a filtering device for chimneys for purifying flue gases, comprising an outer housing (1, 3) having a lower opening allowing the housing to be applied on the chimney from above, and an upper opening (6) for emitting purified flue gases, a filter (9) positioned internally of the housing so as to screen off a considerable part of the flue glas route between said two openings, and a fan (12) positioned between said filter (9) and the upper opening. In addition, said housing is arranged to be opened to allow easy changes of filter (9). |
