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Centrifugal blower system and fuel cell incorporating same

  • US 9,593,686 B2
  • Filed: 03/24/2015
  • Issued: 03/14/2017
  • Est. Priority Date: 06/24/2011
  • Status: Active Grant
First Claim
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1. A centrifugal blower system comprising:

  • a) a series of blower units, each blower unit in the series of blower units comprising a casing having an axial inlet and a radial outlet, a substantially tangential wall of the casing extending to the outlet, an impeller disposed within the casing for drawing a gaseous medium at a first pressure into the axial inlet and expelling gaseous medium at a second higher pressure through the radial outlet along a trajectory inclined to the substantially tangential wall, and a motor for driving the impeller;

    b) a duct directly connecting the radial outlet of at least one upstream blower unit in the series of blower units with the axial inlet of at least one successive downstream blower unit in the series of blower units; and

    c) a microprocessor in communication with the blower units of the series of blower units and configured to control independently the operation of the blower units in the series of blower units.

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