Arrangement for detecting filter, for example dust filter bags or fine dust filter in vacuum cleaner, has electrical resonant circuit formed in vacuum cleaner, and coupling coil is provided

摘要

The arrangement has an electrical resonant circuit formed in the vacuum cleaner (1). A coupling coil is provided, which works contactlessly with a resonance compatible induction circuit formed in the filter (4). The absorption developed in the induction circuit with coupling of the induction circuit in the resonant circuit provides an electrical characteristic, which identifies the presence of the filter.