摘要 |
A dust collecting apparatus for a vacuum cleaner, which includes, a cyclonic chamber with an air inlet and a first outlet being formed therein, the cyclonic chamber causing air from the air inlet to spin therein, a dust receptacle connected to the cyclonic chamber, a grill assembly in the cyclonic chamber and on the upstream side of the air outlet to prevent dust and contaminants separated from the air from backflowing through the first air outlet, a main filter assembly connected to the grill assembly for filtering out dust and contaminants from the air backflowing from the grill assembly, and a supplementary filter assembly on the outside of the cyclonic chamber to re-filter the fine dust and contaminants incoming from the first air outlet. While conventional cyclone type vacuum cleaners are limited by the amount of contaminants that can be separated from the air, the disclosed vacuum cleaner can more effectively separate dust and contaminants.
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