Apparatus and method for passive phase change thermal management
AssigneeIntel Corporation
InventorsDamion T. Searls, Terrance J. Dishongh, David Pullen
Life of this patent
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Abstract
A heat sink includes a heat sink body including a number of fins and a cavity for holding a phase change material and a number of particles to enhance the mixing of the phase change material during the operation of the heat sink. In operation, the body of the heat sink conducts thermal energy to the phase change material. The energy is absorbed during the phase change of the phase change material. After absorbing energy and changing to a liquid state, the phase change material continues to dissipate energy by convection. The convection currents in the cavity are directed by the shape of the cavity surfaces and enhanced by the particles intermixed with the phase change material.
Claims9
An apparatus comprising:
- a phase change material;
- a plurality of particles intermixed with the phase change material;
- and
- a conductive structure encapsulating the phase change material and the plurality of particles, the conductive structure including a cavity having a first sloping surface, wherein the first sloping surface slopes upward from a first low area positioned above a hot spot of an integrated circuit die.
The apparatus of claiom 1, wherein the phase change material congeals on the plurality of particles in cooler regions of the phase change material.
Dependencies are inferred from the claim text.