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Multizone variable damper for use in an air passageway

  • US 10,058,012 B2
  • Filed: 12/17/2010
  • Issued: 08/21/2018
  • Est. Priority Date: 12/17/2010
  • Status: Active Grant
First Claim
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1. A cooling system for a vertical IT rack comprising:

  • an array of access floor panels positioned edge-to-edge and spaced above a subfloor such that there is an air plenum between the subfloor and the array of access floor panels;

    the vertical IT rack is positioned on the array of access floor panels and has a plurality of vertical zones;

    the array of access floor panels including at least one grate panel positioned adjacent the vertical IT rack, the at least one grate panel having a length and a width, the length being substantially parallel to the vertical IT rack and the width being substantially perpendicular to the vertical IT rack, the at least one grate panel having a set of fixed-angled vanes that extend lengthwise of the at least one grate panel and are spaced along the width of the at least one grate panel;

    the set of fixed-angled vanes of the at least one grate panel directing air passing through the at least one grate panel such that the air is directed at the vertical IT rack;

    a multizone damper located immediately below the at least one grate panel;

    the multizone damper having multiple air passageway zones, each of the multiple air passageway zones extends the length of the at least one grate panel, the air passageway zones are arranged serially along the width of the at least one grate panel;

    the multizone damper has a movable member in each of the multiple air passageway zones which regulates the air flow volume through the air passageway zone;

    wherein the air passing through each of the multiple air passageway zones is directed to a different one of the plurality of vertical zones by the set of fixed-angled vanes of the at least one grate panel;

    wherein each of the movable members is movable independent of the other movable members, such that the air flow volume directed through the multizone damper and the at least one grate panel can vary among the multiple air passageway zones and among the plurality of vertical zones.

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