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Capillary condenser/evaporator

  • US 7,775,261 B2
  • Filed: 03/08/2005
  • Issued: 08/17/2010
  • Est. Priority Date: 02/26/2002
  • Status: Active Grant
First Claim
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1. A heat transfer device for transferring heat to or from a fluid that is undergoing a phase change, the heat transfer device comprising:

  • a) an inlet adapted to receive a supply of working liquid;

    b) a capillary structure spaced from the inlet and adapted to move the fluid by capillary action;

    c) a heat transfer interface in thermal communication with the capillary structure;

    d) a liquid-vapor manifold constructed and arranged to deliver liquid from the inlet to the capillary structure, the liquid-vapor manifold being further constructed and arranged to direct vapor dispersed by the capillary structure in a direction away from the capillary structure, the liquid-vapor manifold including;

    at least a first layer proximal to the capillary structure and at least a second, distal layer, each of the layers including a plurality of conduits, the conduits in adjacent layers being in fluid communication with each other, the conduits of the first, proximal layer being in fluid communication with the capillary structure, each of the conduits being constructed and arranged to transport liquid in a direction from the inlet toward the capillary structure, each of the layers also including one or more openings configured and dimensioned to transport the vapor dispersed by the capillary structure in the direction away from the capillary structure; and

    a plurality of discrete liquid delivery sites so as to disperse the liquid over the capillary structure;

    e) a housing constructed and arranged to enclose at least the liquid-vapor manifold so as to contain the vapor; and

    wherein adjacent layers have an increasing number of conduits when moving in a first direction toward the proximal layer and capillary structure, and wherein a cross-sectional area of each of the conduits decreases between adjacent layers in the first direction toward the proximal layer and capillary structure.

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