DUST TRAP DEVICE OF VACUUM CLEANER (VARIANTS) Russian patent published in 2007 - IPC A47L9/16 

FIELD: vacuum cleaners, namely new compact design of dust trap device for accumulating foreign objects at effective dust trapping.

SUBSTANCE: dust trap device includes first cylindrical filtering chamber for filtering air laden foreign objects with use of cyclone flow of air; large number of second filtering chambers formed along outer perimeter of first cylindrical filtering chamber and used for receiving air passed through first cylindrical filtering chamber; formed under first cylindrical filtering chamber first accumulation chamber for accumulating foreign objects filtered in first filtering chamber; second accumulation chamber for accumulating foreign objects filtered in second filtering chambers; connection plate connecting opposite ends of second accumulation chamber for forming first filtering chamber. Connection plate has low end arranged higher than low end of second accumulation chamber. In variant of invention dust trap device includes filter made of plastics and arranged in first filtering chamber creating first cyclone flow of air and having relatively large diameter. Along outer perimeter of first filtering chamber large number of discrete second filtering chambers are arranged for receiving air passed through first filtering chamber. Device includes first accumulation chamber for accumulating foreign objects filtered in first filtering chamber; arc-shaped second accumulation chamber for accumulating foreign objects filtered in second filtering chambers; connection plate connecting opposite ends of second accumulation chamber for forming first filtering chamber; discharge member guiding air passed through second filtering chambers in desired direction. Low end of connection plate is arranged higher than low end of second accumulation chamber. In other variant device includes in addition locking member selectively connected with low part of filter and having diameter increased downwards.

EFFECT: enhanced efficiency of dust trapping in small-size dust trap device having relatively large space for accumulating foreign objects.

19 cl, 8 dwg