Vacuum cleaner

A vacuum cleaner, comprising:

• a cleaner body;
• and
• a dust collector detachably mounted in the cleaner body, wherein the dust collector includes:
• a first cyclone provided by an inner case and an outer case to filter foreign matter and dust from air introduced into the dust collector;
• a second cyclone having a plurality of hollow bodies in the inner case to separate second foreign matter from the air filtered from the first cyclone;
• and
• a rotatable shell provided at a lower side of the first cyclone so as to define a first storage chamber configured to collect the first foreign matter filtered by the first cyclone between the rotatable shell and the outer case, wherein the rotatable shell includes a skirt including a plurality of first portions extending gradually away from the rotatable shell and a plurality of second portions connecting a first side of one first portion to a second side of an adjacent first portion along a rotational direction of the rotatable shell, wherein the plurality of first and second portions are repeatedly arranged along a circumference of the rotatable shell.