Patent ID: 7819933

Claim:
A cyclone dust collector, comprising: a cyclone unit having a first cyclone unit and a second cyclone unit, the first cyclone unit comprising a cyclone chamber to separate dust from dust-laden air, the second cyclone unit comprising a plurality of cones to separate fine dust, and the second cyclone unit being mounted in the first cyclone unit; and a cover unit formed on the cyclone unit to gather air discharged from the second cyclone unit and guide the air outside the cyclone dust collector, wherein the first cyclone unit comprises a blocking plate at a lower part of the first cyclone unit, the blocking plate comprising a plurality of holes in fluid communication with the plurality of cones, and wherein the blocking plate comprises a plurality of protrusion pipes, each of the plurality of protrusion pipes protruding from the plurality of holes toward an inside of the first cyclone unit, and each of the plurality of cones having a lower part inserted into each of the plurality of protrusion pipes wherein the cover unit comprises: a first cover elastically sealed with the second cyclone unit through a gasket formed on an upper part of the second cyclone unit; and a second cover sealed with an upper part of the first cover by a surface contact, wherein the first cover comprises: a plurality of discharge pipes that discharge air from the plurality of cones of the second cyclone unit; and a sealing protrusion formed on an upper surface of the first cover in a looped curve shape to comprise holes of the plurality of discharge pipes and which corresponds to an outline of a space of the second cover where air discharged by the plurality of discharge pipes joins.