| 摘要 |
The invention relates to a filter system for cleaning the air of an enclosure to be ventilated, especially for fiber-optic equipment, the enclosure (3) including a ventilation opening (20) and being associated with an insertion shaft (18) located proximate to the ventilation opening (20), the filter system (15) including an insertion part (25) including a filter housing (27) for accommodating at least one filter element (33) and further including a handle (37) for inserting the insertion part (25) into the insertion shaft, the filter housing (3) being configured so as to cover the ventilation opening (20) when the filter housing (27) is in a working position within the insertion shaft (18); and further including an insertion means (16) provided at a first end portion of the insertion shaft (18) for inserting the insertion part (25) into the insertion shaft (18). According to the invention the insertion means (16) define an insertion opening (53) for inserting the insertion part (25) into the insertion shaft (18) in a given insertion direction, the insertion opening (53) being stationary with respect to the enclosure (3), and the shape of the cross-section of the insertion opening (53) in planes perpendicular to the insertion direction being configured such that the filter housing (3) of the insertion part (25) can be inserted into the insertion shaft (18) in a predefined first azimuthal insertion position, only, and that the filter housing (27) can be rotated from the first azimuthal insertion position into a second azimuthal position corresponding to the azimuthal orientation of the working position after the filter housing (27) of the insertion part (25) has been fully inserted through the insertion opening (53). Further, the invention relates to an enclosure (3) comprising such a filter system (15). |
