DUST-COLLECTING APPARATUS FOR VACUUM CLEANER (VERSIONS) Russian patent published in 2008 - IPC A47L9/16 

FIELD: mechanical engineering.

SUBSTANCE: dust-collecting apparatus has dust-collecting chamber comprising first and second dust-collecting sections arranged in succession and adapted for collecting of foreign objects, filter positioned in first dust-collecting section and adapted for primary filtering of foreign objects during passage of cyclone air flow through first section, air flow guiding unit positioned on upper side of said chamber and adapted for guiding of air flow between said sections, said unit having small cyclones formed integral with said unit and adapted for secondary filtering out of foreign objects contained in air, and discharge guiding unit spaced upward by predetermined distance from air flow guiding unit and adapted for guiding of air flow exiting from dust-collecting chamber. Discharge guiding unit has discharge openings for passage of air filtered out in small cyclones. Upper cover is positioned on discharge guiding unit. Dust-collecting chamber and air flow guiding unit are formed integral with one another. According to one version, dust-collecting apparatus has dust-collecting chamber comprising separated dust-collecting sections adapted for collecting of foreign objects filtered by cyclone air flow, air flow guiding unit positioned at upper end of said chamber and adapted for guiding of air flow between said sections, said air flow guiding unit being formed integral with said chamber, and guiding discharge unit spaced by predetermined distance above air flow guiding unit and adapted for guiding of clean air exiting from air flow guiding unit. Cover is provided for closing upper side of air flow guiding unit. According to another version, dust-collecting apparatus has dust-collecting chamber comprising first dust-collecting section for collecting of relatively large foreign particles, and second dust-collecting section for collecting of small particles, air flow guiding unit positioned at upper end of said chamber and adapted for guiding of air flow between said sections, said unit being formed integral with said chamber, cyclones extending from lower surface of said unit into second section, and discharge guiding unit spaced by certain distance above air flow guiding unit to define therewith space for air flow. Discharge guiding unit has openings for guiding of air free of foreign objects from air flow guiding unit. Upper cover is provided on upper side of discharge guiding unit.

EFFECT: increased efficiency and simplified construction.

20 cl, 5 dwg