Patent ID: 7429284
Filing Date: 2008-09-30
Classification: A47L,B04C,Y10S

Abstract:
1. A cyclone dust collecting apparatus comprising: a first cyclone unit, and at least one second cyclone unit having an air passage for guiding air discharged via the first cyclone unit into the at least one second cyclone unit and a discharge pipe, wherein the discharge pipe comprises a passage guide member for guiding air discharged from the second cyclone unit, wherein the passage guide member comprises a plurality of guide ribs formed in an inner circumference of the discharge pipe, wherein the guide ribs are protruded from the inner circumference of the discharge pipe in a direction toward a center of the discharge pipe, wherein the guide ribs leave an air passage in the center of the discharge pipe, wherein the guide ribs are spaced apart from an inlet end of the discharge pipe in a direction of air movement, wherein the guide ribs comprise a bent part and a linear part, wherein the bent part is disposed at an inlet end of the discharge pipe, wherein the linear part is disposed at an outlet end of the discharge pipe, wherein the bent part and the linear part are integrally formed with each other, wherein the bent part comprises a round part to prevent contaminants in air from blocking the discharge pipe, and wherein the bent part is twisted.