| 摘要 |
<p>The filter according to the invention for purifying air fits substantially any portable fan (1) and comprises a casing (24) containing one or more activated charcoal fittings (46) and possibly filtration elements with a purely mechanical action (44, 48). The air sucked in by the fan passes at least partially through the filter and will be purified. Such a filter is simple, relatively cheap, and can be recycled. It may be used with an ordinary table fan. <IMAGE></p> |
