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Heat pipe with non-metallic type wick structure

a non-metallic type, heat pipe technology, applied in the direction of heat transfer modification, indirect heat exchangers, lighting and heating apparatus, etc., can solve the problems of difficult control of heat pipe quality, inability to enhance the heat transfer efficiency of the heat pipe to a satisfied level, and generally inability to provide low cost of metal-type capillary wicks. achieve the effect of low cos

Inactive Publication Date: 2007-11-01
HON HAI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]A heat pipe in accordance with a preferred embodiment of the present invention includes a metal casing and a capillary wick arranged on an inner surface of the casing. The casing has an evaporating section, a condensing section and a central section between the evaporating and condensing sections. The capillary wick arranged at the central section is made of non-metallic material. The capillary wick at the central section of the casing provides a low cost and a lightweight to the heat pipe.

Problems solved by technology

These metallic-type capillary wicks generally cannot provide a low cost and a lightweight advantage to the heat pipes.
Besides, the oxidation problem of the metal material may change surface tension of the metallic-type capillary wick, whereby quality of the heat pipes is difficult to control.
Moreover, porosity of the metallic-type capillary wick is limited during manufacturing of the metallic-type capillary wick and, accordingly, the heat transfer efficiency of the heat pipe cannot be enhanced to a satisfied level.

Method used

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  • Heat pipe with non-metallic type wick structure
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  • Heat pipe with non-metallic type wick structure

Examples

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Embodiment Construction

[0014]FIG. 1 illustrates a heat pipe in accordance with a first embodiment of the present invention. The heat pipe comprises a metallic casing 100 and a capillary wick 200 arranged on an inner wall of the casing 100. A column-shaped vapor passage 300 is enclosed by an inner surface of the capillary wick 200 in a center of the casing 100. The casing 100 comprises an evaporating section 400 at one end, a condensing section 600 at an opposite end thereof, and a central section (i.e., adiabatic section) 500 located between the evaporating section 400 and the condensing section 600. The casing 100 is made of highly thermally conductive materials such as copper or copper alloys and filled with a working fluid (not shown) therein, which acts as a heat carrier for carrying thermal energy from the evaporating section 400 to the condensing section 600. Heat that needs to be dissipated is first transferred to the evaporating section 400 of the casing 100 to cause the working fluid therein to e...

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Abstract

A heat pipe includes a casing (100) and a capillary wick (200) received in the casing. The casing has an evaporating section (400), a condensing section (600) and a central section (500) between the evaporating section and the condensing section. The capillary wick arranged at the central section is made of non-metallic material. The capillary wick at the central section of the casing provides a low cost and a lightweight to the heat pipe.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to a heat transfer apparatus, and more particularly to a heat pipe having a capillary wick made of non-metallic material.DESCRIPTION OF RELATED ART[0002]As a heat transfer apparatus, heat pipes can transfer heat rapidly and therefore are widely used in various fields for heat dissipation purposes. For example, in the electronics field, heat pipes are commonly used to transfer heat from heat-generating electronic components, such as central processing units (CPUs), to heat dissipating devices, such as heat sinks. A heat pipe in accordance with the related art generally includes a sealed casing made of thermally conductive material with a working fluid contained in the casing. The working fluid is employed to carry heat from one end of the casing, typically called the “evaporating section”, to the other end of the casing, typically called the “condensing section”. Specifically, when the evaporating section of a heat p...

Claims

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Application Information

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IPC IPC(8): F28D15/00
CPCF28D15/046
Inventor HOU, CHUEN-SHUTUNG, CHAO-NIENLIU, TAY-JIAN
Owner HON HAI PRECISION IND CO LTD