Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.

Abstract: The invention relates to apparatus and a method for separating solid particles from fluids and particularly gas flows. The apparatus is particularly for use in conjunction with an internal combustion engine or vacuum cleaner. The apparatus includes cyclone separator means which comprise at least two axial common cyclone separator elements, an inner and outer element, in conjunction with a two-stage electrostatic precipitator. The apparatus allows the filtration of fluid effectively, even if the flow varies over time.