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Quieting means for a fluid flow control device using vortical flow patterns

  • US 3,941,350 A
  • Filed: 03/04/1974
  • Issued: 03/02/1976
  • Est. Priority Date: 03/04/1974
  • Status: Expired due to Term
First Claim
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1. In a flow path including an entry opening to said flow path:

  • a valve means for closing said opening in variable degrees;

    a means for controlling the flow through said opening comprising a stack of laminar members across said opening having abutting faces, including a first group of members having elongated passageways therethrough each of said passageways defining a substantially cylindrical chamber and a radially directed passage intersecting said cylindrical chamber tangentially, with adjacent pairs of said first group being positioned radially such that the cylindrical chambers in said adjacent members are axially aligned and vortical flow patterns are produced in said chambers, but with the said radially directed passages being connected oppositely to said chambers to produce reversals in direction of flow near the exit of each of said pairs of cylindrical chambers; and

    a second group of laminar members which have no communication with said chambers and passages and which abut against the opposite faces of said first group of members to confine flow to a plurality of generally serpentine paths across said stack.

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