| 摘要 |
A vacuum cleaner comprising a main separating unit (35), typically a cyclone (13), a vacuum source (31) for creating a negative air pressure, and a downstream filter (33). The vacuum cleaner is switchable from a vacuum cleaning mode to a filter cleaning mode, where the vacuum source is connected to the downstream filter to force an airstream (57) therethrough in a reverse direction in order to remove dust from the downstream filter, and has an auxiliary separating unit (49). In the vacuum cleaning mode, the auxiliary separating unit is bypassed, and in the filter cleaning mode, the auxiliary separating unit is connected between the downstream filter and the vacuum source to separate dust, released by the downstream filter, from the airstream. This allows the downstream filter to be automatically cleaned. |
