Abstract: A vacuum cleaner assembly including a vacuum cleaner housing (10) and an air filtration unit removably installed in the housing. The unit includes a coarse separator (25), a cyclone with a cyclone chamber (26), a collecting container (27), and a releasable cover plate (37). The coarse separator (25) receives dirt-laden air. Air is tangentially introduced into the cyclone chamber (26), which is downstream the coarse separator (25). The collecting chamber (27) receives particles separated from the air stream in the cyclone chamber (26). The cover plate (37) serves as a wall part for each of the coarse separator, cyclone, and collecting container whereby, after the unit (14) has been removed from the housing (10), the cover plate is removed to simultaneously reveal the coarse separator, cyclone, and collecting container to permit emptying thereof.

Abstract: A vacuum cleaner cyclone separator having a cyclone with a first end wall, a second opposite end wall (35,36,135), and an intermediate part (38,130), which has the shape of either a cylinder or, at least partly, an up-side-down truncated cone. The intermediate part has an outlet opening (39,131) for particles through which particles separated by the cyclone leave from the intermediate part toward the second end wall. The cyclone is, close to the first end wall, provided with a generally tangentially-directed air inlet (33,129) for dust laden air and also has a tube shaped air outlet (50,142) extending from the first end wall (35) toward the intermediate part and communicating with a vacuum source (15,111).