Patent ID: 8282697

Claim:
A dust collecting apparatus for a vacuum cleaner, comprising: a dust separating chamber separating dust from dust-laden air, the dust separating chamber comprises a primary dust separating chamber and at least one secondary dust separating chamber, the primary dust separating chamber and the at least one secondary dust separating chamber being cyclone separating chambers; a dust collecting chamber storing dust separated from the dust-laden air by the dust separating chamber; and an air discharge guide duct guiding the air discharged from the dust separating chamber to an air outlet at a lower end of the dust collecting apparatus, the primary dust separating chamber having a primary air spinning axis and the secondary dust separating chamber having a secondary air spinning axis, the secondary air spinning axis being vertically above the primary air spinning axis, wherein the air discharge guide duct comprises: a first duct formed on a rear surface of the dust collecting apparatus so as to guide the air discharged from the dust separating chamber downwards; a second duct being connected to the first duct and extending into the dust separating chamber; and a third duct formed in the dust separating chamber so as to connect the second duct with the air outlet.