Through this technique, only the particles which belong there enter the filter: Fine dust. Paper and other larger particles enter directly into the coarse dirt container and thus cannot clog the filter.
The fine dust is hence not whirled-up and does not return to the surfaces to be cleaned. The vacuum mechanism is both in electric sweepers as well as in sweepers with an internal combustion engine. The drive of the smallest vacuum sweeper already provides more than 200 m³ / h.
In some vacuum sweepers, this engine simultaneously serves as the pre-drive. An unrivaled and comfortable ease of cleaning operation is the result.