Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick

a technology of mesh wick and heat pipe, which is applied in the direction of cooling/ventilation/heating modification, semiconductor/solid-state device details, semiconductor devices, etc., can solve the problems of shortened life time deterioration of electric or electronic parts, and remarkably small electronic devices represented by personal computers or the lik

Inactive Publication Date: 2001-06-28
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The function of the electric or electronic parts deteriorates and the life time thereof is shortened, when the electric or electronic parts are excessively heated.
Lately, the electronic devices represented by the personal computer or the like are remarkably downsized, and the development of the method for cooling the electric or electronic parts mounted in the electric devices becomes an important technical issue.
However, when the heat absorbing side is positioned above the heat dissipating side (this type is called as a "top heat mode"), the working fluid is not effectively circulated back to the heat absorbing side, thus the so-called dry out phenomenon often occurs.
However, the size of the computer or the like becomes remarkably smaller.
More specifically, since the mesh per se has no rigid body, it is difficult to fix the mesh wick placed in layers in both lengthwise and widthwise directions.
As a result, it is difficult to have the mesh wick contacted with the specific inner wall of the container, thus the mesh wick contacts with the various inner walls so as to deteriorate the function of the heat pipe.
When the gaps exist in the width direction of the mesh wick placed in layers, the capillary power is lowered so as to cause the heat resistance to rise, thus deteriorating the function of the heat pipe.
Accordingly, when the mesh wick is formed to be a prescribed shape, the end portion thereof is not sharply cut, thus the remaining fine wires at the end portion contact with various inner walls of the container, thus deteriorating the function of the heat pipe.

Method used

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  • Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick
  • Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick
  • Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick

Examples

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example

Example 1

[0099] As shown in FIG. 1(a), ten sheets of band type mesh wire, each of which sheet has a thickness of 110 micron meter, a width of 100 mm, a length of 663 mm and 100 meshes were layered. Then, the end of thus layered sheets were aligned with a metal plate having a width of about 48 mm. Then, as shown in FIG. 1(b), the layered sheets of the band type mesh wire were wound around the metal plate. Then, the metal plate was removed from the wound mesh body, and as shown in FIG. 1(c), the force of 150 to 200 kgf / cm2 was applied so as to press the wound mesh body. Thus, the compressed mesh wick of about 51 mm.times.100 mm was prepared. The thickness of the compressed mesh wick was up to about 1.5 mm. The end portion of the wound mesh wick was prepared in such manner that the length of the end portion was about 5 mm from the tip of the side portion of the compressed mesh wick, as shown in FIG. 1(d). As a result, it was possible to remarkably reduce the gap between the layers of t...

example 2

[0101] As shown in FIG. 2A(a), ten sheets of band type mesh wire, each of which sheet has a thickness of 110 micron meter, a width of 100 mm, a length of 663 mm and 100 meshes were layered. Then, as shown in FIG. 2A(b), a corrugated bent layered mesh body was prepared by bending the band type mesh wire in a corrugated form. Then, as shown in FIG. 2A(c), the force of 150 to 200 kgf / cm2 was applied to the corrugated bent layered mesh body so as to press same. Thus, the compressed mesh wick of about 51 mm.times.100 mm was prepared. The thickness of the compressed mesh wick was up to about 1.5 mm. As a result, it was possible to remarkably reduce the gap between the layers of the mesh wire. In addition, fine wires were not protrude outward and scattered.

[0102] Thus prepared compressed mesh wick was press-attached to the inner wall of the heat dissipating side and the side wall of the heat transfer block by the spot welding, as shown in FIG. 6. As a result, the heat pipe having excellent...

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Abstract

A compressed mesh wick prepared by bending for plurality of times at least one sheet of band type mesh wire to form a prescribed shape, thus preparing a bent layered mesh body, and pressing the bent layered mesh body.

Description

[0001] 1. Field of the Invention[0002] The present invention relates to a plate type heat pipe for cooling various electronic components such as semiconductor chips or the like, a mesh wick used for a plate type heat pipe, and in particular, relates to a mesh wick comprising multiple mesh wire sheets, a method for manufacturing same, and a plate type heat pipe using same in which the container is light weighted, is not deformed by a vapor pressure of a working fluid, and has a low heat transfer resistance.[0003] 2. Description of the Related Art[0004] Electric or electronic parts such as semiconductor chips or the like generate heat to some extent, when used, which are mounted on various devices such as personal computers and electric or electronic devices such as power equipment. The function of the electric or electronic parts deteriorates and the life time thereof is shortened, when the electric or electronic parts are excessively heated. Lately, the electronic devices represente...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F28D15/02F28D15/04H01L21/48H01L23/427H05K7/20
CPCF28D15/0233F28D15/046H01L21/4878H01L23/427H01L2924/0002H01L2924/00
Inventor YAMAMOTO, MASAAKIUEKI, TATSUHIKOIKEDA, MASAMI
Owner FURUKAWA ELECTRIC CO LTD
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