Cyclone dust-collecting apparatus and a vacuum cleaner having the same

A vacuum cleaner comprising:

• a vacuum cleaner body having a vacuum suction member installed therein;
• a suction brush connected to the vacuum cleaner body and movable along a cleaning surface;
• and
• a cyclone dust-collecting apparatus removably mounted in the vacuum cleaner body,
• wherein the cyclone dust-collecting apparatus comprises:
• a cyclone body having a suction part through which dirt-laden air is drawn in and a discharge part through which filtered air is discharged;
• a grill connected to the discharge part for filtering the dirt-laden air;
• a dirt receptacle connected to the cyclone body for collecting dirt separated from the dirt-laden air;
• and
• a downstream guide part for preventing dirt collected in the dirt receptacle from being scattered and for guiding a dirt item in the dirt-laden air that has at least one of a predetermined weight and a predetermined size in a downward spiral direction to the dirt receptacle,
• wherein the downstream guide part comprises a first guide member disposed under the grill and formed in a spiral shape to downward guide the dirt item, and a second guide member formed on the cyclone body opposite to the first guide member to guide the dirt item to flow into the first guide member.