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Fan Impeller with Multiple Blades Shaped and Disposed to Provide High Air-Power Efficiency

  • US 20140233178A1
  • Filed: 10/28/2011
  • Published: 08/21/2014
  • Est. Priority Date: 10/28/2011
  • Status: Abandoned Application
First Claim
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1. A fan impeller with multiple blades shaped and disposed to provide high air-power efficiency, said fan impeller comprising:

  • a hub;

    a first plurality of primary blades coupled to said hub;

    a second plurality of secondary blades coupled to said hub; and

    wherein a first primary blade is disposed closer to a top of said hub than a first secondary blade, a leading edge of said first secondary blade is disposed proximately to a trailing edge of said first primary blade, a leading edge portion of said first secondary blade is disposed in an inter-blade space between said first primary blade and a second primary blade, and a trailing edge portion of said first secondary blade is disposed outside of said inter-blade space and towards a bottom of said hub.

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