Vacuum cleaner

A vacuum cleaner, comprising:

• a cleaner body having a guide rail;
• a dust separating apparatus fixed to the cleaner body;
• a first dust receptacle detachably attached to the cleaner body, the first dust receptacle being disposed on a bottom portion of the dust separating apparatus to collect large particle dust from the dust separating apparatus, the first dust receptacle having a supporting portion for optional engagement with the guide rail;
• a second dust receptacle detachably attached to the cleaner body, the second dust receptacle being disposed on a bottom portion of the first dust receptacle to collect fine particle dust from the dust separating apparatus;
• and
• a locking device movable between a first position in which the second dust receptacle presses the first dust receptacle toward the dust separating apparatus, disengaging the supporting portion from the guide rail, to provide a seal between the dust separating apparatus and the first and second dust receptacles, and a second position in which the first dust receptacle is spaced apart from the second dust receptacle at a predetermined interval and is suspended from the cleaner body as the guide rail is engaged with the supporting portion.