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Vacuum cleaner

  • US 10,638,902 B2
  • Filed: 12/21/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 12/22/2016
  • Status: Active Grant
First Claim
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1. A vacuum cleaner, comprising:

  • a working air path comprising a dirty air inlet and a clean air outlet;

    a motor/fan assembly in fluid communication with the dirty air inlet for generating a working airstream through the working air path; and

    a debris removal assembly for removing and collecting debris from the working airstream for later disposal, the debris removal assembly having a central axis and comprising;

    a debris removal assembly body having an air inlet in fluid communication with the dirt air inlet and an air outlet fluidly upstream of the clean air outlet; and

    a multi-layer filtration stage provided within the debris removal assembly body, and comprising;

    a louvered exhaust grill comprising a generally cylindrical body having a plurality of louvers extending longitudinally relative to the central axis between upper and lower ends of the generally cylindrical body and forming air flow openings therebetween;

    a mesh screen disposed radially outwardly about a radial perimeter of the louvered exhaust grill; and

    a multi-layer filter including a plurality of layers of filtration material, the multi-layer filter mounted radially interior within the louvered exhaust grill, fluidly downstream of the air flow openings.

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