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Fluid pressure reduction device

  • US 6,935,370 B2
  • Filed: 03/08/2004
  • Issued: 08/30/2005
  • Est. Priority Date: 08/16/2001
  • Status: Expired due to Term
First Claim
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1. A fluid pressure reduction device comprising:

  • a plurality of stacked disks having a perimeter and a hollow center aligned along a longitudinal axis; and

    each disk having at least a first and a second flow path, each flow path having a generally spiral shape and continuously extending between the hollow center and the perimeter wherein at least the first and second flow paths spiral in generally opposite directions and the opposing walls of each flow path gradually diverge, each flow path being further comprised of an inlet section, an outlet section, and an intermediate section extending between the inlet and outlet sections;

    wherein each flow path crosses at least one other flow path at at least one intersection; and

    wherein each of the flow path intermediate sections includes a recovery zone downstream of the intersection.

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