Heat sink
First Claim
1. A heat sink, comprising:
- a body of solid-phase elemental material defining at least one contact face adapted for direct contact with a heat source requiring cooling, the body of solid-phase material having a plurality of sealed cavities defined therein, wherein the body of solid-phase material has a thickness between the at least one contact face and the cavities defining an interface region of melted solid-phase material extending from the at least one contact face toward the cavities when the heat source is placed in direct contact with the at least one contact face, the interface region leaving the cavities intact; and
unencapsulated phase change material having a higher specific heat capacity than the solid-phase material and being disposed in the cavities and being in direct contact with the body of solid-phase elemental material.
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Accused Products
Abstract
The heat sink is a body or block of solid-phase gallium having a plurality of sealed cavities defined therein containing an unencapsulated phase change material (other than gallium). The solid-phase gallium may be disposed in a container having at least one open face (contact face) adapted for direct contact with the heat source requiring cooling so that the interface between the heat source and the heat sink includes a region of melted gallium for improved heat transfer. Heat from the heat source is rapidly conducted through the region of melted gallium, then through solid-phase gallium, and is absorbed by the phase change material in the cavities without significant change in temperature, maintaining viability of the heat sink. The heat sink may include inclined tubes through the solid-phase body of gallium, the tubes being open at opposite ends for passage of a cooling medium, such as air or cold water.
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Citations
20 Claims
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1. A heat sink, comprising:
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a body of solid-phase elemental material defining at least one contact face adapted for direct contact with a heat source requiring cooling, the body of solid-phase material having a plurality of sealed cavities defined therein, wherein the body of solid-phase material has a thickness between the at least one contact face and the cavities defining an interface region of melted solid-phase material extending from the at least one contact face toward the cavities when the heat source is placed in direct contact with the at least one contact face, the interface region leaving the cavities intact; and unencapsulated phase change material having a higher specific heat capacity than the solid-phase material and being disposed in the cavities and being in direct contact with the body of solid-phase elemental material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification