| 摘要 |
A device for adsorbing pollutants, such as volatile solvents, in a gas flow, comprises an adsorption element (1) having a through path for the gas flow which contains an adsorbent, such as active carbon. A perforated resistance plate (6) is arranged in the path of gas flow so as to affect the flow resistance therein. The resistance plate (6) has perforations (7, 8), of which at least some are designed each to offer different flow resistance in the two directions of flow. The perforations (7, 8) are so arranged in relation to one another that the plate (6) offers a flow resistance varying across the plate in both directions of flow. |
