FILTER CLEANING SYSTEM FOR A VACUUM CLEANER

摘要

A vacuum cleaner dust separation unit having a cyclone chamber (113) and a dust collection chamber (115). The cyclone chamber (113) extends along a longitudinal axis (398), and has an air inlet (183), an air outlet (408), an inlet wall (396) between the air inlet (183) and the air outlet (408), and one or more air passages (404) through the inlet wall (396). The dust collection chamber (115) is adapted to receive dirt from the cyclone chamber (113). In one aspect, the inlet wall (396) comprises an elliptical wall that is located adjacent the air inlet (182) and angled relative to the longitudinal axis (398). In another aspect, the cyclone chamber (113) has an end wall (432) located opposite the inlet wall (396), and a dirt outlet (114) to the dust collection chamber (115) located adjacent the end wall (432), and the end wall (432) has a recessed portion (438) surrounding an extended portion (436) that protrudes into the cyclone chamber (113).