Abstract: A sweeping machine includes a sweeping brush capable of being driven in rotation, a debris container, a suction fan and at least one filter arranged in the flow path between the sweeping brush and the suction fan, in flow communication with the suction fan via a suction conduit, in flow communication with a pressure vessel via an external air conduit and at least one external air valve and, for filter cleaning, is capable of having external air stored in the pressure vessel applied thereto. In order for the filter to be capable of being cleaned effectively with as little external air as possible and with the external air being at as low a positive pressure as possible, the external air conduit includes a hood which covers the filter on a clean side thereof and forms a first section of the suction conduit which adjoins the clean side of the filter.

Abstract: A sweeping machine includes a sweeping brush capable of being driven in rotation, a debris container, a suction fan and at least one filter arranged in the flow path between the sweeping brush and the suction fan, in flow communication with the suction fan via a suction conduit, in flow communication with a pressure vessel via an external air conduit and at least one external air valve and, for filter cleaning, is capable of having external air stored in the pressure vessel applied thereto. In order for the filter to be capable of being cleaned effectively with as little external air as possible and with the external air being at as low a positive pressure as possible, the external air conduit includes a hood which covers the filter on a clean side thereof and forms a first section of the suction conduit which adjoins the clean side of the filter.