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Impeller and a pressure support system and method using such a method

  • US 20040071552A1
  • Filed: 07/18/2003
  • Published: 04/15/2004
  • Est. Priority Date: 06/19/2000
  • Status: Active Grant
First Claim
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1. A radial impeller comprising:

  • a hub attachable to a rotating shaft;

    an impeller body attached to the hub and extending radially from the hub to a perimeter of the impeller and having opposed radial faces; and

    a plurality of impeller blades disposed on one face of the impeller body, each impeller blade extending from a leading end of the blade generally adjacent the hub toward a trailing end of the blade generally at the perimeter of the impeller, wherein an inlet area is defined between each pair of adjacent blades generally adjacent the hub, with each inlet area being defined as the area at the radius of the leading end of the adjacent blades bounded by a height of the leading end of the adjacent blades and the one face of the impeller body, and wherein an outlet area is defined between each pair of adjacent blades generally adjacent the perimeter of the impeller, with each outlet area being defined as the area at the radius of the trailing end of the adjacent blades bounded by the height of the trailing end of the adjacent blades and the one face of the impeller body, wherein each inlet area is substantially equal to each corresponding outlet area for each pair of adjacent blades.

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