Flexible heat pipe

a heat pipe and flexible technology, applied in the field of flexible heat pipes, can solve the problem of further reducing heat transfer through the flexible heat pip

Inactive Publication Date: 2008-05-01
HON HAI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]In ordinary use, the adiabatic section of the flexible heat pipe needs to be bent to achieve miniaturization of the electronic products. However, the wick structure may separate from the inner surface of the casing since the wick structure has a different flexibility coefficient to that of the casing. This decreases heat exchange between the casing and the wick structure and liquid transportation capability of the wick structure, which further decreases heat transfer through the flexible heat pipe. Therefore, there is a need for a flexible heat pipe which can be bent without overly decreasing its heat transfer capability.

Problems solved by technology

This decreases heat exchange between the casing and the wick structure and liquid transportation capability of the wick structure, which further decreases heat transfer through the flexible heat pipe.

Method used

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Examples

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Embodiment Construction

[0016]Referring to FIGS. 1 and 2, a flexible heat pipe 10 according to a first embodiment of the present invention is shown. The heat pipe 10 includes a casing 12, and a wick structure 20 disposed in the casing 12. The wick structure 20 contains working medium (not shown).

[0017]The casing 12 includes an evaporation section 122 for connecting with a heat generating electronic component (not shown) such as a CPU, a condensation section 126 for connecting with a heat dissipating apparatus (not shown) such as a heat sink, and an adiabatic section 124 connecting the evaporation section 122 with the condensation section 126 for transferring heat therebetween. The adiabatic section 124 connects with the evaporation and the condensation sections 122, 126 via two connecting members 127. Both the evaporation and the condensation sections 122, 126 of the casing 12 are made of high thermally conductive material such as copper, stainless steel or aluminum. The adiabatic section 124 is made of fl...

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Abstract

A flexible heat pipe (10) includes a casing (12), a wick structure (20) arranged in the casing, and a working medium saturated in the wick structure. The casing includes an evaporation section (122), a condensation section (126), and a flexible adiabatic section (124) connecting the evaporation section with the condensation section. The wick structure includes a first portion (21), a second portion (23) and a third portion respectively disposed in the evaporation, the condensation and the adiabatic sections of the casing. The adiabatic section of the casing further accommodates a supporting member (30) therein for supporting the third portion of the wick structure to have an intimate contact with an inner surface of the adiabatic section.

Description

BACKGROUND OF THE INVENTION [0001]1. Field of the Invention[0002]The present invention relates to a heat pipe, and more particularly to a flexible heat pipe having a high heat transfer capability when it is bent.[0003]2. Description of Related Art[0004]Flexible heat pipes are traditionally used in micro-electronics to help transfer heat from heat producing products. The typical flexible heat pipe includes a casing and a wick structure contacting with an inner surface of the casing. The wick structure contains a working medium. The casing includes an evaporation section connected with a heat generating electronic component such as a CPU, a condensation section connected with a heat dissipating apparatus such as a heat sink, and a flexible adiabatic section connecting the evaporation section with the condensation section for transferring heat. The wick structure is selected from mesh wick, or fibrous wick which provides capillary force to help circulation of the working medium between...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F28D15/00
CPCF28D15/0241F28D15/0266F28D15/046H01L2924/0002H01L2924/00
Inventor YU, FANG-XIANGLIN, YEU-LIH
Owner HON HAI PRECISION IND CO LTD
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