Patent ID: 6968596

Claim:
A cyclone-type dust-collecting apparatus for a vacuum cleaner, comprising: a cyclone body comprising an air inflow port and an air outflow port for forming an air vortex of dust-laden air drawn into the air inflow port; a dust-collecting receptacle removably connected to the cyclone body for separating dust and dirt from the air vortex of dust-laden air and for collecting the separated dust and dirt therein; and a grill assembly disposed at the air outflow port of the cyclone body for preventing reverse flow of dust and dirt into the air outflow port of the cyclone body, the grill assembly further comprising: a conically shaped first grill member having a first end and a second end that is smaller than said first end, said second end of said first grill member having a first connection groove, said first end coupled to the outflow port of the cyclone body; a second grill member coupled to the second end of the first grill member, said second grill member having a grill portion that comprises a plurality of fine passage holes to provide fluid communication to the air outflow port and further having a second connection groove formed in an outer surface of the connection end of the second grill member; and a connection member having a first connection protrusion shaped to accommodate the first connection groove and having a second connection protrusion shaped to accommodate the second connection groove by which the first grill member and the second grill member are separably connected to each other.