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US 11,454,462 B2Granted
Heat dissipating fin with thermosiphon
AssigneeAavid Thermalloy, LLC
InventorsBradley R. Whitney, Chad Turmelle, Randolph H. Cook
Life of this patent
Estimating the term…
Abstract
A heat transfer device such as a heat sink includes one or more fins for dissipating heat received from a heat source, such as an integrated circuit or other electronic component. A thermosiphon component including a tube that defines a closed, continuous loop and contains a working fluid is attached to a face of a corresponding fin and is arranged to operate as a two-phase thermosiphon to transfer heat across areas of the fin. The heat transfer may equalize temperatures across the fin, enhancing efficiency.
Claims23
A heat transfer device comprising:
- a planar fin having first and second opposed faces and a heat receiving portion at an edge of the planar fin;
- and
- at least one tube forming a continuous, closed loop and containing a working fluid, the at least one tube being physically and thermally connected to the first face of the planar fin, and the at least one tube and working fluid adapted to operate as a two-phase thermo siphon in which working fluid is evaporated in an evaporation portion of the at least one tube adjacent the heat receiving portion of the planar fin, and working fluid vapor flows in the at least one tube away from the evaporation portion for condensing, the at least one tube including a multiport tube having multiple flow channels forming the continuous closed loop, the multiport tube including a sleeve-type coupling that joins ends of the multiport tube to each other, the sleeve-type coupling including a sealable fill port for evacuating and/or providing the working fluid to the continuous, closed loop,
- wherein the sealable fill port includes a tubular element attached to an opening in the sleeve-type coupling, and
- wherein the tubular element provides a stop for tube ends received into the sleeve-type coupling.
2 more elements
A heat transfer device comprising:
- a planar fin having first and second opposed faces, a rectangular shape with a first edge opposite a second edge and a third edge opposite a fourth edge, and a heat receiving portion at the first edge of the rectangular shape;
- and
- at least one tube forming a continuous, closed loop and containing a working fluid, the at least one tube being physically and thermally connected to the first face of the planar fin, and the at least one tube and working fluid adapted to operate as a two-phase thermo siphon in which working fluid is evaporated in an evaporation portion of the at least one tube adjacent the heat receiving portion of the planar fin, and working fluid vapor flows in the at least one tube away from the evaporation portion for condensing,
- wherein the at least one tube has a first portion that extends outwardly along the first edge toward the third and fourth edges, third and fourth portions that respectively extend along the third and fourth edges toward the second edge, and a second portion extends inwardly along the second edge,
- wherein the third and fourth portions each have at least one twist bend and the third and fourth portions are located away from the plane of the first face.
2 more elements
A heat transfer device comprising:
- a planar fin having first and second opposed faces and a heat receiving portion at an edge of the planar fin;
- and
- at least one tube forming a continuous, closed loop and containing a working fluid, the at least one tube being physically and thermally connected to the first face of the planar fin, and the at least one tube and working fluid adapted to operate as a two-phase thermo siphon in which working fluid is evaporated in an evaporation portion of the at least one tube adjacent the heat receiving portion of the planar fin, and working fluid vapor flows in the at least one tube away from the evaporation portion for condensing, the at least one tube including a multiport tube having multiple flow channels forming the continuous closed loop, the multiport tube including a sleeve-type coupling that joins ends of the multiport tube to each other, the sleeve-type coupling including a sealable fill port for evacuating and/or providing the working fluid to the continuous, closed loop,
- wherein the sealable fill port includes a tubular element attached to an opening in the sleeve-type coupling, and
- wherein the tubular element has a leg that defines a channel at an end of the tubular element, the leg being positioned against an inner wall of the sleeve-type coupling.
2 more elements
Dependencies are inferred from the claim text.