JP3195576U - Heat pipe structure - Google Patents

Abstract

A heat pipe structure having flexibility and a very thin thickness is provided. A heat pipe structure includes a main body, and the main body includes a first plate body, a second plate body, a capillary structure, and a working fluid. The first plate 1a and the second plate 1b face each other and overlap each other, and the capillary structure 11 is sandwiched between the first plate 1a and the second plate 1b. At least one groove 111 is formed in the capillary structure 11. At least one convex portion 12 projects from the first plate body 1 a or the second plate body 1 b toward the capillary structure 11. The convex portion 12 is bonded to the capillary structure 11 and is adjacent to the groove portion 111. [Selection] Figure 1

Description

The present invention relates to a heat pipe structure, and more particularly to a heat pipe structure having a very small thickness.

  Conventional mobile electronic devices are becoming lighter and thinner. New mobile electronic devices are lighter and thinner, and their computing power has been improved. However, as computing capacity improves and the overall thickness decreases, the space of electronic parts accommodated therein is limited, and when computing capacity is improved, it is relatively caused by computing electronic parts. The amount of heat increased, and it was necessary to dissipate each electronic component by installing a heat dissipation member. However, with the thinning of mobile electronic devices, the internal space is very narrow, and it is very difficult to install heat dissipation parts such as fans, and the heat dissipation area has been increased by installing copper plates or aluminum plates. However, the heat dissipation effect was limited.

  When the heat pipe or the plate type heat pipe is thinned in the prior art, since the whole is thin, it is difficult to fill and sinter the powder after thinning the thin heat pipe. It is difficult to form a mold structure or press and flatten it after filling and sintering the powder, and the sintered powder inside the heat pipe or other capillary structure (mesh body or fiber body) There was a risk of being lost due to being pressed and destroyed.

  In addition, since the internal support structure is omitted in the conventional plate heat pipe for further thinning, when the plate heat pipe is exhausted and closed, the internal chamber is deformed and the conventional thin heat pipe is deformed. The steam flow path inside the heat pipe or plate type heat pipe is compressed and shrinks, and in the worst case, the steam flow path is completely lost, which may adversely affect the efficiency of gas-liquid circulation in the entire interior. Improvement has been demanded for the plate-type heat pipe and the gas-liquid circulation structure inside the heat pipe.

JP2013-242111A

  An object of the present invention is to provide a heat pipe structure having flexibility and a very thin thickness.

In order to solve the above problems, according to a first embodiment of the present invention, a heat pipe structure including a main body, the main body includes a first plate body, a second plate body, a capillary structure, and a working fluid. The first plate body and the second plate body overlap each other, a capillary structure is sandwiched between the first plate body and the second plate body, The capillary structure has at least one groove, and the first plate or the second plate has at least one protrusion protruding toward the capillary structure, and the protrusion A heat pipe structure is provided that is bonded to the capillary structure and adjacent to the groove.

  The capillary structure is preferably a mesh body, a fiber body, a linear weave body, or a powder sintered body.

  It is preferable that convex portions adjacent to each other are formed on both sides of the groove portion.

  It is preferable that the said convex part is a protrusion, a continuous convex point, or a discontinuous convex body.

  It is preferable that the thickness of the first plate body and the second plate body is 0.01 to 0.15 mm, and the thickness of the capillary structure is 0.01 to 0.2 mm.

It is preferable to further include an evaporation region and a condensation region that are formed at both ends of the main body and are respectively connected to both ends of the groove portion.

  An evaporation region formed at a location close to the central portion of the main body; and a condensation region formed at both ends of the evaporation region. The evaporation region and the condensation region are respectively connected to both ends of the groove portion. It is preferable that

  It is preferable that the convex part protrudes from a central part of the capillary structure, and the groove part is formed on both right and left sides.

  The heat pipe structure of the present invention maintains the internal gas-liquid circulation space even when the heat pipe is thinned. When generating the working fluid inside the main body and circulating the gas and liquid, it is possible to reduce the generation of pressure resistance by separating the gas and liquid in the radial direction or axial direction of the main body, and to reduce the thickness of the entire heat pipe, It can be used in a narrow space and can be bent freely by applying external force.

FIG. 1 is an exploded perspective view showing a heat pipe structure according to a first embodiment of the present invention. FIG. 2 is a cross-sectional perspective view showing the heat pipe structure according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view showing a heat pipe structure according to a second embodiment of the present invention. FIG. 4 is a cross-sectional view showing a heat pipe structure according to a third embodiment of the present invention. FIG. 5 is a cross-sectional view showing a heat pipe structure according to a fourth embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

(First embodiment)
Please refer to FIG. 1 and FIG. FIG. 1 is an exploded perspective view showing a heat pipe structure according to a first embodiment of the present invention. FIG. 2 is a cross-sectional perspective view showing the heat pipe structure according to the first embodiment of the present invention.

  As shown in FIGS. 1 and 2, the main body 1 of the heat pipe structure according to the first embodiment of the present invention includes at least a first plate body 1 a, a second plate body 1 b, a capillary structure 11, and a working fluid 2. Consists of. The first plate body 1a and the second plate body 1b overlap each other, and the capillary structure 11 is sandwiched between the first plate body 1a and the second plate body 1b. The capillary structure 11 is formed with at least one groove 111 extending in the axial direction X of the main body 1. The groove part 111 is penetrated in the upper and lower sides of the capillary structure 11 in the radial direction Y of the main body 1.

  At least one convex portion 12 projects from the first plate body 1 a or the second plate body 1 b toward the capillary structure 11. The convex portion 12 is adjacent to the groove portion 111 and connected (contacted) with the capillary structure 11.

  The main body 1 described above has an evaporation region 13 and a condensation region 14. The evaporation region 13 and the condensation region 14 are respectively formed at both ends of the main body 1, and the evaporation region 13 and the condensation region 14 are connected to both ends of the groove 111.

(Second Embodiment)
Please refer to FIG. FIG. 3 is a cross-sectional view showing a heat pipe structure according to a second embodiment of the present invention. Parts having the same structure as in the first embodiment will not be repeated here. Unlike the first embodiment, the second embodiment includes the convex portions 12 formed by arranging a plurality of convex bodies 121 at intervals, and at least one flow path 122 is provided between the plurality of convex bodies 121. Is formed. The gas working fluid 21 diffuses and circulates in the groove 111 along the axial direction X of the main body 1 by the plurality of convex portions 121, and the liquid working fluid 22 described above receives the action of the capillary force of the capillary structure 11, 1 circulates in the radial direction of the main body 1 through the flow path 122 between the convex bodies 121 in the direction opposite to the gas working fluid 21 along the axial direction X.

(Third embodiment)
Please refer to FIG. FIG. 4 is a cross-sectional view showing a heat pipe structure according to a third embodiment of the present invention. Parts having the same structure as in the first embodiment will not be repeated here. Unlike the first embodiment, the main body 1 of the fourth embodiment has an evaporation region 13 and a condensation region 14, and the evaporation region 13 is formed at a location (middle stage location) close to the central portion of the main body 1 to condense. The region 14 is formed on both end sides of the evaporation region 13. Both ends of the groove 111 are connected to the evaporation region 13 and the condensation region 14, respectively. The convex portion 12 may be provided on one side or both sides of the groove portion 111 in the axial direction.

(Fourth embodiment)
Please refer to FIG. FIG. 5 is a cross-sectional view showing a heat pipe structure according to a fourth embodiment of the present invention. Parts having the same structure as in the first embodiment will not be repeated here. In the fifth embodiment, unlike the first embodiment, the above-described convex portion 12 protrudes from the central portion of the capillary structure 11, and the above-mentioned groove portion 111 is formed along both sides of the convex portion 12. The evaporation region 13 and the condensation region 14 are respectively formed at both ends of the capillary structure 11.

  The capillary structure 11 of the first to fourth embodiments described above may be a mesh body, a fiber body, a linear weave body, or a powder sintered body. The thicknesses of the first plate 1a and the second plate 1b are 0.01 to 0.15 mm. The thickness of the aforementioned capillary structure 11 is 0.01 to 0.2 mm.

  Although the convex part 12 of this invention is a protrusion body, a protrusion body, a continuous convex point, or a discontinuous convex body may be sufficient. However, the convex portion 12 of the present invention is not limited to these.

  As can be seen from the above description, the heat pipe structure of the present invention uses the groove portion 111 formed on the capillary structure 11 as a steam flow path, and the convex portion 12 formed in the groove portion 111 includes the gas working fluid 21 and a liquid. It is a structure used for gas-liquid separation from the working fluid 22 or a structure for condensing the liquid working fluid 22, and the gas working fluid 21 is circulated in the axial direction X of the main body 1 in the groove portion 111 to form the capillary structure 11. The liquid working fluid 22 is circulated between the radial direction Y of the main body 1 and the direction opposite to the axial direction X of the gas working fluid 21 in the drawing to reduce the thickness of the heat pipe structure. It is possible to maintain a steam flow path for performing the above and a space in which the working fluid 2 circulates.

The preferred embodiments of the present invention have been disclosed as described above so that those skilled in the art can understand them, but these do not limit the present invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the utility model registration claim of the present invention should be broadly interpreted including such changes and modifications.

DESCRIPTION OF SYMBOLS 1 Main body 1a 1st board 1b 2nd board 2 Working fluid 11 Capillary structure 12 Convex part 13 Evaporating area 14 Condensing area 21 Gas working fluid 22 Liquid working fluid 111 Groove part 121 Convex body 122 Flow path X Axial direction Y Diameter direction

Claims (8)

A heat pipe structure comprising a body for containing a working fluid,
The main body comprises a first plate, a second plate, and a capillary structure,
The first plate body and the second plate body overlap each other relative to each other, and a capillary structure is sandwiched between the first plate body and the second plate body. In the capillary structure, At least one groove is formed,
In the first plate body or the second plate body, at least one convex portion protrudes adjacent to the groove portion toward the capillary structure and is bonded to the capillary structure. Characteristic heat pipe structure.   The heat pipe structure according to claim 1, wherein the capillary structure is a mesh body, a fiber body, a linear weaving body, or a powder sintered body.   2. The heat pipe structure according to claim 1, wherein the convex portions are convex bodies arranged adjacent to each other along both sides of the groove portion.   The heat pipe structure according to claim 3, wherein the convex body of the convex portion is a ridge, a continuous convex point, or a discontinuous convex body. The thickness of the first plate and the second plate is 0.01 to 0.15 mm,
The heat pipe structure according to claim 1, wherein the capillary structure has a thickness of 0.01 to 0.2 mm. The heat pipe structure according to claim 1, wherein both ends of the main body are used as an evaporation region and a condensation region, respectively, and an evaporation region and a condensation region are respectively connected to both ends of the groove portion. 2. The evaporation region and the condensation region are connected to both ends of the groove portion, respectively, with a portion close to the central portion of the main body as an evaporation region and both ends of the evaporation region as condensation regions. The described heat pipe structure. The convex portion is formed to protrude from the central portion of the capillary structure,
The heat pipe structure according to claim 1, wherein the groove portion is formed along both left and right sides of the convex portion.

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