| 摘要 |
The invention relates to a filter sequence constituting part of an air filtration system, where the filter sequence comprises an active carbon filter (AC, AC 1-2), and further an odour suppressing filter (S). Odours that arise from the active carbon filter are suppressed by the odour suppressing filter. In one embodiment, the filter sequence further comprises at least a Zeolite filter Z, where the Zeolite filter Z is arranged after all the active carbon filters AC, AC 1-2 in the filter sequence. With the Zeolite filter arranged in thios way, it efficiently eliminates remaining substances in the purified air The odour suppressing filter (S) has as its main active substance a hygroscopic substance, and this hygroscopic substance may be a hygroscopic salt. In one embodiment the odour suppressing filter (S) has as its main active substance sodium chloride. |
