| 摘要 |
<p>The fine dust filter of the vacuum cleaner is in the form of a container (1) filled at least partly with a surface active material (8) pref. small balls of foamed plastics. When the dust-charged air is drawn in, the dust is deposited on this material and not on the filter surface. The container (1) can be made of a material which remains stable in shape and can be provided with two connecting pipes (4, 5) connected up to the suction pipe attach-to the machine. A coarse-meshed filter (6, 7) and/or sieve can be mounted between the surface-active material (8) and the connecting pipes (4, 5).</p> |
