Patent ID: 7563297
Filing Date: 2009-07-21
Classification: A47L,B04C,Y10S

Abstract:
1. A multi-cyclone dust separating apparatus, comprising: a primary cyclone for centrifugally separating impurities from the sucked air; a plurality of secondary cyclones for centrifugally separating impurities from the air supplied from the primary cyclone; inflow guide paths for guiding the air discharged from the primary cyclone to the plurality of secondary cyclones; and discharge guide tubes partially inserted into the plurality of secondary cyclones, for externally discharging the air from the plurality of secondary cyclones, wherein the discharge guide tubes comprise cylindrical portions and intercepting portions extending from bottom ends of the cylindrical portions for preventing the air supplied to the plurality of secondary cyclones from being directly discharged to the discharge guide tubes, wherein the primary cyclone comprises a cylindrical grill member installed on an air outflow hole through which the air is discharged, the cylindrical grill member preventing backflow of impurities, and wherein the grill member comprises an air guide member protruded from the bottom of the grill member, the air guide member guiding the air passing through the grill member to the air outflow hole.