CN215177144U - Vapor chamber and electronic apparatus - Google Patents
Vapor chamber and electronic apparatus Download PDFInfo
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- CN215177144U CN215177144U CN202120522925.8U CN202120522925U CN215177144U CN 215177144 U CN215177144 U CN 215177144U CN 202120522925 U CN202120522925 U CN 202120522925U CN 215177144 U CN215177144 U CN 215177144U
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Abstract
The utility model provides a soaking board and electronic equipment. When the soaking plate is bent, a sufficient space to be a vapor passage can be secured in the bent portion. The vapor chamber is characterized by comprising: a case having a first region, a second region distant from the first region, and a bending portion bendable at a boundary between the first region and the second region; a working fluid sealed in the internal space of the housing; a core disposed in the inner space of the housing; and a reinforcing member that is disposed in an internal space of the case located in the bent portion and extends from the first region toward the second region, the reinforcing member including a core material and a reinforcing member core, the reinforcing member core being disposed in at least a part of an outer periphery of the core material, the reinforcing member core being in contact with the core material present in the first region and the core material present in the second region.
Description
Technical Field
The utility model relates to a soaking plate. The utility model discloses still relate to the electronic equipment who possesses above-mentioned soaking board.
Background
In recent years, high integration and high performance of elements have been advanced in electronic devices. Along with this, the amount of heat generated from the electronic device increases. Therefore, a heat dissipation countermeasure becomes important. This situation is particularly significant in the field of mobile terminals such as smart phones, tablet computers, and the like. Though a graphite sheet or the like is often used as the heat countermeasure component, the amount of heat transport is not sufficient, and therefore, the use of various heat countermeasure components has been studied. Among them, a vapor chamber, which is a planar heat pipe, is used in order to diffuse heat very efficiently.
The soaking plate is a member in which an appropriate amount of working fluid that is easily volatilized is sealed in a flat plate-shaped closed container. The working fluid is vaporized by heat from the heat source, moves in the internal space, and then releases heat to the outside and returns to the liquid. The working fluid returned to the liquid is again transported to the vicinity of the heat source through a capillary structure called a wick, and is vaporized again. By repeating this process, the soaking plate can autonomously operate without external power, and the heat dissipation amount can be two-dimensionally and high-speed expanded by the latent heat of evaporation and the latent heat of condensation of the working fluid.
In recent years, miniaturization of electronic devices has been progressing. As the size of electronic equipment is reduced, the space inside the case of the electronic equipment becomes smaller, and it is therefore difficult to secure a sufficient space for disposing the heat spreader.
As a method of disposing the soaking plate in such a narrow space, there are a method of making the soaking plate thin, and a method of deforming the soaking plate in accordance with the shape of the space.
Patent document 1 discloses a sheet-shaped heat pipe (i.e., a vapor chamber) which is thin and flexible, and has stable cooling performance without narrowing a vapor passage, the sheet-shaped heat pipe including: a sheet container in which sheet members are opposed to each other and peripheral portions are bonded to each other to seal the container; a core layer formed on an inner wall surface of the container and exerting a capillary force; a plurality of spacers fixedly arranged at predetermined positions on the core layer such that cut surfaces of the substantially cylindrical small pieces obtained by cutting the metal wire rod are perpendicular to an inner wall surface of the container; and a working fluid sealed inside the container.
Further, patent document 2 discloses a thin flexible heat pipe (i.e., a vapor chamber) that can be easily bent while securing a vapor passage and has a high degree of freedom in design, the thin flexible heat pipe including: a closed container formed by joining peripheral portions of two foil-like sheets having different thicknesses; a core body housed in the container in a movable state; and a working fluid sealed in the container.
Patent document 1: japanese patent laid-open No. 2007 and 183021
Patent document 2: japanese patent laid-open publication No. 2004-12001
The vapor chamber described in patent document 1 and patent document 2 has a problem that the vapor chamber can be bent to some extent, but the space of the vapor passage cannot be sufficiently secured in the bent portion.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above problems, and an object of the present invention is to provide a vapor chamber that can ensure a sufficient space to become a vapor passage in a curved portion when the vapor chamber is curved.
The utility model discloses a soaking board's characterized in that possesses: a case having a first region, a second region located apart from the first region, and a bendable portion bendable at a boundary between the first region and the second region; a working fluid sealed in the internal space of the housing; a core disposed in the inner space of the housing; and a reinforcing member that is disposed in an internal space of the case at the bend portion and extends from the first region toward the second region, the reinforcing member including a core material and a reinforcing member core, the reinforcing member core being disposed at least in part of an outer periphery of the core material, the reinforcing member core being in contact with the core material present in the first region and the core material present in the second region.
The electronic device of the utility model is characterized in that the soaking plate of the utility model is provided.
The utility model discloses a soaking plate is even crooked, also can ensure sufficient space that becomes the steam route at the flexion.
Drawings
Fig. 1A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a first embodiment of the present invention. FIG. 1B is a cross-sectional view taken along line A-A of FIG. 1A. FIG. 1C is a line sectional view of B-B of FIG. 1A.
Fig. 2 is a perspective view schematically showing an example of a state in which the soaking plate according to the first embodiment of the present invention is bent.
Fig. 3 is a process diagram schematically showing an example of the core arrangement step in the method of manufacturing a soaking plate according to the first embodiment of the present invention.
Fig. 4 is a process diagram schematically showing an example of the reinforcing member arranging step in the method of manufacturing a soaking plate according to the first embodiment of the present invention.
Fig. 5A and 5B are process diagrams schematically showing an example of a case joining step in the method for manufacturing a soaking plate according to the first embodiment of the present invention.
Fig. 6 is a process diagram schematically showing an example of the working fluid sealing step in the method for manufacturing a soaking plate according to the first embodiment of the present invention.
Fig. 7A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a second embodiment of the present invention, and fig. 7B is a cross-sectional view taken along line C-C of fig. 7A.
Fig. 8A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a third embodiment of the present invention, and fig. 8B is a cross-sectional view taken along line D-D of fig. 8A.
Fig. 9A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a fourth embodiment of the present invention, and fig. 9B is a cross-sectional view taken along line E-E of fig. 9A.
Fig. 10 is a partially cut-away perspective view schematically illustrating an example of a soaking plate according to a fifth embodiment of the present invention.
Description of the reference numerals
1. 101, 201, 301, 401 … soaking plate, 10, 410 … shell, 11, 411 … first sheet, 12, 412 … second sheet, 13, 413 … first area, 14, 414 … second area, 15, 415, 418 … bending part, 16, 416 … pillar, 20, 420 … inner space, 30, 430 … working fluid, 40, 340 … core, 41, 441 … first core, 42, 442 … second core, 50, 150, 250, 450, 456 … reinforcing component, 51, 151, 251, 457 … core, 52, 252, 452, 458 … reinforcing component core, 55 … reinforcing component group, 60 … sealing port, 417 … third area, 443 … third core.
Detailed Description
The vapor chamber of the present invention will be described below.
However, the present invention is not limited to the following configuration, and can be applied with appropriate modifications within the scope not changing the gist of the present invention. In addition, a combination of two or more preferred configurations of the present invention described below is also the present invention.
The embodiments described below are merely exemplary, and it is needless to say that partial replacement or combination of the configurations described in the different embodiments can be performed. In the second and subsequent embodiments, descriptions of common matters with the first embodiment will be omitted, and only different points will be described. In particular, the same operational effects due to the same configurations are not mentioned in turn for each embodiment.
In the following description, the embodiments will be referred to as "vapor chamber of the present invention" without particularly distinguishing them.
[ first embodiment ]
Fig. 1A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a first embodiment of the present invention. FIG. 1B is a cross-sectional view taken along line A-A of FIG. 1A. FIG. 1C is a line sectional view of B-B of FIG. 1A.
The vapor chamber 1 shown in fig. 1A includes a case 10, and the case 10 is composed of a first sheet 11 and a second sheet 12 facing each other with their outer edges joined, and has an internal space 20.
The housing 10 has a first region 13, a second region 14 remote from the first region 13, and a bendable portion 15 bendable at a boundary of the first region 13 and the second region 14.
The soaking plate 1 shown in fig. 1A includes: a working fluid 30 enclosed in the internal space 20 of the casing 10; a core 40 disposed in the internal space 20 of the housing 10; and a reinforcing member 50 disposed in the internal space 20 of the case 10 at the bent portion 15 and extending from the first region 13 toward the second region 14.
In the soaking plate 1, the core 40 and the reinforcing member 50 are disposed on the inner wall surface of the second sheet 12.
As shown in fig. 1A and 1B, in the soaking plate 1, the core 40 is independently composed of a first core 41 existing in the first region 13 and a second core 42 existing in the second region 14, and a gap is present between the first core 41 and the second core 42.
As shown in fig. 1B and 1C, in the soaking plate 1, the reinforcing member 50 includes a core 51 and a reinforcing member core 52 disposed on the outer periphery of the core 51. The reinforcing member core 52 may be disposed on at least a part of the outer periphery of the core 51.
In the soaking plate 1 shown in fig. 1B, the core 51 extends from the first region 13 toward the second region 14, and the reinforcing member core 52 is disposed on the entire outer periphery of the core 51. Therefore, the reinforcing member core 52 is in contact with the first core 41 and the second core 42.
As shown in fig. 1C, in the soaking plate 1, a plurality of reinforcing member groups 55 are arranged in the internal space 20 located in the bent portion 15, and the reinforcing member groups 55 include two adjacent reinforcing members 50 spaced apart by the first distance a.
The adjacent reinforcing member sets 55 are arranged apart from each other by a second interval b larger than the first interval a.
The first interval a is a minimum distance between two adjacent reinforcing members 50 arranged in the same reinforcing member group 55 in a state where the soaking plate 1 is not bent.
In addition, the starting position of the first interval a is a starting position at an end of the core 51 when the core 51 is exposed, and is a starting position at an end of the reinforcing member core 52 when the core 51 is covered with the reinforcing member core 52.
The second interval b is a minimum distance from the reinforcing member 50 of one reinforcing member group 55 disposed closest to the other reinforcing member group 55 to the reinforcing member 50 of the other reinforcing member group 55 disposed closest to the one reinforcing member group 55 in the adjacent reinforcing member groups 55 in a state where the soaking plate is not bent.
In the starting position of the second interval b, when the core 51 is exposed, the end of the core 51 is the starting position, and when the core 51 is covered with the reinforcing member core 52, the end of the reinforcing member core 52 is the starting position.
As shown in fig. 1A and 1B, in the soaking plate 1, a plurality of support columns 16 are preferably disposed between the first sheet 11 and the second sheet 12 in the internal space 20 of the casing 10 so as to support the first sheet 11 and the second sheet 12 from inside.
The soaking plate 1 of the present invention may be formed by bending the case 10 at the bending portion 15. The vapor chamber 1 in such a state will be described below with reference to the drawings. Fig. 2 is a perspective view schematically showing an example of a state in which the soaking plate according to the first embodiment of the present invention is bent.
The soaking plate 1 shown in fig. 2 is a soaking plate in which the case 10 of the soaking plate 1 shown in fig. 1A is bent at the bent portion 15 so as to protrude toward the second sheet 12.
When the heat spreader does not have the reinforcing member, if the case is bent, the case is crushed by stress, and the internal space in the bent portion is narrowed. As a result, the working fluid becomes less likely to move. Therefore, the vapor chamber cannot exert a sufficient heat radiation function.
On the other hand, in the soaking plate 1, when the case 10 is bent at the bent portion 15, the case 10 can be prevented from being crushed due to the presence of the reinforcing member 50, and the vapor of the working fluid 30 can move in the internal space 20 of the bent portion 15.
In the soaking plate 1, the reinforcing member core 52 is in contact with the first core 41 and the second core 42, so that the liquid working fluid 30 can move through the reinforcing member core 52 in the first core 41 and the second core 42.
Therefore, the heat uniformity is maintained, and the heat transport amount is not easily reduced. That is, the heat radiation function of the vapor chamber 1 can be maintained.
Preferably, the area of the reinforcing member core 52 in contact with the first core 41 and the area of the reinforcing member core 52 in contact with the second core 42 are 1.0mm2Above and 1000mm2The following.
In addition, the direction of bending of the soaking plate 1 may be reversed. That is, the soaking plate 1 may be a soaking plate in which the case 10 is bent at the bent portion 15 so as to protrude toward the first sheet 11.
In the soaking plate 1, the adjacent reinforcing members 50 arranged in one reinforcing member group 55 are arranged with the first interval a therebetween. That is, a gap exists between adjacent reinforcing members 50 arranged in one reinforcing member group 55.
When the first interval a is small, the gap between adjacent reinforcing members 50 can be used as a passage for the liquid working fluid 30. Therefore, the heat radiation function can be further improved.
In the soaking plate 1, the first interval a is preferably 0.01mm or more and 0.50mm or less, more preferably 0.02mm or more and 0.20mm or less.
In the soaking plate 1, a plurality of reinforcing member groups 55 are arranged.
By arranging the plurality of reinforcing member sets 55 in this manner, stress generated when the case 10 is bent can be dispersed. Therefore, the housing 10 is less likely to be crushed.
In the soaking plate 1, the reinforcing member group 55 is disposed with the second interval b set apart. By disposing the reinforcing member set 55 at such intervals, a space that serves as a passage for the vapor of the working fluid 30 can be sufficiently secured.
In the soaking plate 1, the second interval b is preferably 0.50mm or more and 20mm or less, more preferably 1.0mm or more and 5.0mm or less.
In the soaking plate 1, when the second interval b is smaller than the first interval a, the liquid working fluid 30 easily flows into the gap forming the second interval b, and the passage of the vapor of the working fluid 30 is not easily formed.
In the soaking plate 1, the second interval b is preferably 1.5 times or more the first interval a.
In the soaking plate 1, it is preferable that the relationship of a < c ≦ b is satisfied when c is a height of the inner space 20 where the reinforcing member 50 is not disposed in the bent portion 15 of the case 10.
In such a range, the internal space 20 of the bending portion 15 is sufficiently large, and the passage of the vapor of the working fluid 30 and the passage of the liquid of the working fluid 30 can be sufficiently ensured. As a result, the heat uniformity can be maintained, the heat transport amount is increased, and the heat radiation function of the heat spreader 1 is improved.
The height c of the internal space 20 is preferably 0.02mm or more and 1.00mm or less.
In the soaking plate 1, the first interval a, the second interval b, and the height c of the internal space 20 are values in a state where the case 10 is not bent.
Next, preferred materials, structures, and the like of the respective configurations of the soaking plate 1 will be described.
In the soaking plate 1, the material of the case 10 is not particularly limited, but is preferably copper, a copper alloy, stainless steel, titanium, a titanium alloy, or aluminum. These materials have excellent thermal conductivity and moldability, and are therefore suitable as materials for the case of the vapor chamber.
When the soaking plate 1 includes a support, the material of the support 16 is not particularly limited, but is preferably copper, a copper alloy, stainless steel, titanium, a titanium alloy, or aluminum.
The shape of the support column 16 is not particularly limited as long as it can support the first sheet 11 and the second sheet to form the internal space 20, and examples thereof include a cylindrical shape, a prismatic shape, a truncated conical shape, and a truncated pyramidal shape.
The arrangement position of the pillars 16 is not particularly limited, but is preferably arranged uniformly, for example, preferably arranged in a lattice shape so that the distance between the pillars 16 is constant. By arranging the support columns 16 uniformly, uniform strength can be ensured throughout the soaking plate 1
In the soaking plate 1, the first wick 41 and the second wick 42 may have any structure as long as they have a capillary structure that can move the liquid working fluid 30 by capillary action. Examples of the capillary structure include a microstructure having irregularities such as pores, grooves, and projections, and examples thereof include a porous structure, a fibrous structure, a groove structure, and a mesh structure.
The material of the first core 41 and the second core 42 is not particularly limited, but may be, for example, a metal porous film, a mesh, a nonwoven fabric, a sintered body, a porous body, or the like formed by etching or metal working. The mesh which becomes the material of the core may be formed of, for example, a metal mesh, a resin mesh, or a surface-coated mesh thereof, and is preferably formed of a copper mesh, a stainless steel (SUS) mesh, or a polyester mesh. The sintered body of the material to be the core may be made of, for example, a porous sintered metal body or a porous sintered ceramic body, and is preferably made of a porous sintered copper or nickel body. The porous body to be a material of the core may be, for example, a porous body composed of a metal porous body, a ceramic porous body, a resin porous body, or the like.
Among them, a stainless steel (SUS) screen having high heat resistance and capable of plastic deformation is preferable.
The first core 41 and the second core 42 may be made of the same material or different materials.
As described above, the case 10 of the soaking plate 1 can be bent at the bent portion 15. With this bending, the first core 41 and the second core 42 are also bent.
In the case where the first core 41 and the second core 42 are of a mesh structure, the density of the cores is graded as the first core 41 and the second core 42 bend. In other words, the density of the core on the inner side becomes high due to the difference between the inner and outer peripheries, and the density of the core on the outer side becomes low.
Therefore, a gradient may be provided in advance for the density of the first core 41 and the second core so that the density of the cores is uniform when the shell 10 is bent.
In the soaking plate 1, the working fluid 30 is not particularly limited as long as it can cause a gas-liquid phase change in the environment inside the case, and for example, water, alcohols, alternative freon, or the like can be used. The working fluid 30 is preferably an aqueous compound, and more preferably water.
In the vapor chamber 1, the material of the core 51 is not particularly limited, but is preferably copper, a copper alloy, stainless steel, titanium, a titanium alloy, or aluminum.
The yield strength of the core material 51 is preferably higher than the yield strength of the case 10.
In the present specification, "yield strength" means a tensile strength based on JIS Z2241: 2011 measured 0.2% yield strength.
The core material 51 preferably has a 0.2% yield strength of 300MPa or more.
The yield strength of the core material 51 is preferably 1.5 times or more the yield strength of the case 10.
The shape of the core member 51 is not particularly limited, but may be a plate shape, or a columnar shape such as a cylinder or a quadrangular prism.
In the soaking plate 1, the preferable material of the reinforcing member core 52 is the same as the preferable material of the first core 41 and the second core 42.
As described above, in the soaking plate 1, in the reinforcing member 50, the reinforcing member core 52 may be disposed on the entire outer periphery of the core 51, or may be disposed only on a part of the core 51. That is, the core member 51 may be partially exposed.
In the soaking plate 1, the length of the reinforcing member 50 (indicated by L in fig. 1B) in the extending direction of the reinforcing member 50 from the first region 13 toward the second region 141The length shown) is not particularly limited, but is preferably 0.1mm or more and 50mm or less.
Further, it is preferable that the length L of the reinforcing member 50 in the extending direction of the reinforcing member 50 from the first region toward the second region1Length relative to the inner space 20 (in fig. 1B, by L)sLength shown) is 1/2 times less.
Within this range, the heat radiation function of the vapor chamber 1 can be sufficiently maintained.
If the length L of the reinforcing member 50 is long1Length L relative to the inner space 20sWhen the heat dissipation function of the soaking plate 1 is more than 1/2 times, the heat dissipation function is easily lowered, and the case 10 is not easily bent.
In the soaking plate 1, the length of the reinforcing member 50 (indicated by L in fig. 1C) in the direction perpendicular to the extending direction of the reinforcing member 50 from the first region 13 toward the second region 142The length shown) is not particularly limited, but is preferably 0.1mm or more and 10mm or less.
In the soaking plate 1, the height of the reinforcing member 50 (in fig. 1C, from H)1The length shown) is not particularly limited, but is preferably 0.1mm or more and 0.5m or less.
Preferably, the height H of the reinforcing member 501And the thickness of the core 40 is greater than the height c of the internal space 20.
When manufacturing the soaking plate 1, the reinforcing member 50 is disposed on the inner wall surface of the second sheet 12, and the first sheet 11 is pressed from above and fixed to the soaking plate 1, but at the height H of the reinforcing member 501And when the added length of the thickness of the core 40 is greater than the height c of the internal space 20, the first sheet 11 can be plastically deformed in accordance with the shape of the reinforcing member 50 to fix the reinforcing member 50. Therefore, the reinforcing member 50 is less likely to shift when the soaking plate 1 is bent or when the soaking plate 1 is used.
Next, a method for manufacturing a vapor chamber according to a first embodiment of the present invention will be described.
The method for manufacturing a vapor chamber according to a first embodiment of the present invention includes, for example, a core body disposing step, a reinforcing member disposing step, a case joining step, and a working fluid sealing step.
The respective steps will be described below with reference to the drawings.
(core body disposing step)
Fig. 3 is a process diagram schematically showing an example of the core arrangement step in the method of manufacturing a soaking plate according to the first embodiment of the present invention.
As shown in fig. 3, in this step, a second sheet 12 is prepared. Then, the positions of the first region 13, the second region 14, and the bent portion 15 are determined, and the first core 41 is disposed on the inner wall surface of the second sheet 12 in the first region 13, and the second core 42 is disposed on the inner wall surface of the second sheet in the second region 14.
(reinforcing-member disposing step)
Fig. 4 is a process diagram schematically showing an example of the reinforcing member arranging step in the method of manufacturing a soaking plate according to the first embodiment of the present invention.
In this step, first, the reinforcing member 50 in which the reinforcing member core 52 is wound around the core 51 is prepared. Thereafter, as shown in fig. 4, the reinforcing member 50 is disposed at the bent portion 15 of the second sheet 12 in which the first core 41 and the second core 42 are disposed after the core disposing step. At this time, the reinforcing member core 52 is in contact with the first core 41 and the second core 42.
The reinforcing member 50 may be bonded to the joint portion 15 of the second sheet 12, or may be bonded to an inner wall surface of the first sheet 11 described later. When the reinforcing member 50 is bonded to the inner wall surface of the first sheet 11, the reinforcing member disposing step and the case joining step described later are performed simultaneously.
The method of bonding is not particularly limited, but examples thereof include laser welding, resistance welding, diffusion bonding, brazing, TIG welding (tungsten-inert gas welding), ultrasonic bonding, and resin sealing. Among these methods, laser welding, resistance welding or brazing is preferable.
(case joining step)
Fig. 5A and 5B are process diagrams schematically showing an example of a case joining step in the method for manufacturing a soaking plate according to the first embodiment of the present invention.
As shown in fig. 5A, in this step, first, the first sheet 11 is prepared. At this time, the pillars 16 may be formed on the inner wall surface of the first sheet 11. As a method for forming the support column 16, an etching method and the like can be mentioned. The support column 16 may not be formed at the position where the reinforcing member 50 is disposed.
Next, as shown in fig. 5B, the first sheet 11 and the second sheet 12 are joined at the outer edges so that the inner wall surface of the first sheet 11 faces the inner wall surface of the second sheet 12 after the reinforcing member arranging step. At this time, a sealing port 60 for sealing the working fluid 30 is formed. Thereby, the case 10 forming the inner space 20 can be manufactured.
The method of joining the first sheet 11 and the second sheet 12 is not particularly limited, but examples thereof include laser welding, resistance welding, diffusion joining, brazing, TIG welding (tungsten inert gas welding), ultrasonic joining, and resin sealing. Among these methods, laser welding, resistance welding, or brazing is preferable.
Further, the height H of the reinforcing member 501And when the added length of the thickness of the core 40 is longer than the height c of the internal space 20, the first sheet 11 may be deformed by pressing to form a recess for accommodating the reinforcing member 50. Further, the first sheet 11 having a recess capable of accommodating the reinforcing member 50 may be prepared.
In addition, the height H of the member 50 may be reinforced1And the thickness of the core 40 is shorter than the height c of the internal space 20.
(working fluid sealing working procedure)
Fig. 6 is a process diagram schematically showing an example of the working fluid sealing step in the method for manufacturing a soaking plate according to the first embodiment of the present invention.
As shown in fig. 6, in this step, the working fluid 30 is injected from the sealing port 60 of the case 10 to close the sealing port 60.
Through the above steps, the soaking plate 1 according to the first embodiment of the present invention can be manufactured.
[ second embodiment ]
Fig. 7A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a second embodiment of the present invention, and fig. 7B is a cross-sectional view taken along line C-C of fig. 7A.
The soaking plate 101 shown in fig. 7A and 7B has the same structure as the soaking plate 1 shown in fig. 1A except that the core 151 of the reinforcing member 150 is hollow.
If the core 151 of the reinforcing member 150 is hollow, the weight of the reinforcing member 150 is reduced, and therefore the weight of the soaking plate 101 can be reduced.
The core member 151 of the reinforcing member 150 may have a structure in which a hollow portion inside is closed, or may have a tubular structure in which a hollow portion is connected to the outside.
The ratio of the volume of the internal space of the core material 151 to the entire core material 151 is not particularly limited, but it is preferable that the volume of the internal space of the core material 151 is 0.1 or more when the volume of the entire core material 151 is 1.
Further, the volume of the inner space of the core material 151 is preferably 0.1mm3Above and 100mm3The following.
[ third embodiment ]
Fig. 8A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a third embodiment of the present invention, and fig. 8B is a cross-sectional view taken along line D-D of fig. 8A.
The soaking plate 201 shown in fig. 8A and 8B has the same configuration as the soaking plate 1 shown in fig. 1A except that the sectional shape of the core 251 of the reinforcing member 250 as viewed in the direction extending from the first region 13 to the second region 14 is an ellipse.
The cross-sectional shape of the core 251 may be circular or oval.
With such a structure of the core member 251, the core member 251 does not have a corner portion, and therefore the pressure is not easily concentrated at one point of the reinforcing member core 252. Therefore, the reinforcing member core 252 can be prevented from being broken by pressure applied to one point.
[ fourth embodiment ]
Fig. 9A is a partially cut-away perspective view schematically showing an example of a soaking plate according to a fourth embodiment of the present invention, and fig. 9B is a cross-sectional view taken along line E-E of fig. 9A.
As shown in fig. 9A and 9B, the soaking plate 301 has the same configuration as the soaking plate 1 shown in fig. 1A except that the integrated core 340 is disposed in the internal space 20 of the casing 10 so as to be present in the first region 13, the bent portion 15, and the second region 14.
In this way, if the cores 340 are integrally formed, the movement of the liquid working fluid 30 between the cores 340 in the first region 13 and the cores 340 in the second region 14 is facilitated. Therefore, the working fluid 30 is less likely to be deflected.
[ fifth embodiment ]
Fig. 10 is a partially cut-away perspective view schematically illustrating an example of a soaking plate according to a fifth embodiment of the present invention.
The soaking plate 401 shown in fig. 10 includes a case 410, and the case 410 is configured by a first sheet 411 and a second sheet 412 facing each other with their outer edges joined, and has an internal space 420.
The case 410 further includes a second region 414 distant from the first region 413, and a bent portion 415 bendable at a boundary between the first region 413 and the second region 414, and a reinforcing member 450 extending from the first region 413 toward the second region 414 is disposed in an internal space 420 of the case 410 located at the bent portion 415. The reinforcing member 450 includes a core 451 and a reinforcing member core 452 disposed on the outer periphery of the core 51.
In the soaking plate 401, the first core 441 is disposed in the first region 413 of the internal space 420 of the case 410, and the second core 442 is disposed in the second region 414.
The reinforcing member core 452 of the reinforcing member 450 is in contact with the first core 441 and the second core 442.
Further, the case 410 includes a third region 417 which is further apart from the first region 413, and a bent portion 418 which is bendable at a boundary between the first region 413 and the third region 417, and a reinforcing member 456 which extends from the first region 413 toward the third region 417 is disposed in the internal space 420 of the case 410 which is located at the bent portion 418. The reinforcing member 456 includes a core member 457 and a reinforcing member core 458 disposed on the outer periphery of the core member 457.
In the soaking plate 401, a third core 443 is disposed in the third region 417 of the internal space 420 of the case 410.
The reinforcing member core 458 of the reinforcing member 456 is in contact with the first core 441 and the third core 443.
In other words, the soaking plate 401 shown in fig. 10 has the same structure as the soaking plate 1 shown in fig. 1A except that it can be bent at two bent portions.
In the soaking plate 401 having such a configuration, when the case 410 is bent at the bent portion 418, the case 410 can be prevented from being crushed due to the reinforcing member 456, and the vapor of the working fluid 430 can be moved in the internal space 420 at the bent portion 418.
Therefore, the heat uniformity is maintained, and the heat transport amount is not easily decreased. That is, the heat radiation function of the soaking plate 401 can be maintained.
In the soaking plate 401, the reinforcing member 450 and the reinforcing member 456 may have the same shape or different shapes. The reinforcing members 450 and 456 may be made of the same material or different materials.
In the soaking plate 401, it is preferable that the positions of the bent portion 415 and the bent portion 418 be appropriately set according to the shape of the electronic device to be mounted.
In the soaking plate of the present invention, the soaking plate may further include another region such as a fourth region via another bent portion, and the reinforcing member may be disposed in the other bent portion.
[ other embodiments ]
The vapor chamber of the present invention is not limited to the above embodiments, and various applications and modifications can be made to the configuration, manufacturing conditions, and the like of the vapor chamber within the scope of the present invention.
In the vapor chamber of the present invention, the shape of the case is not particularly limited. For example, the planar shape of the case (the shape viewed from the upper side of the drawing in fig. 1A) may be a polygon such as a triangle or a rectangle, a circle, an ellipse, a combination of these shapes, or the like.
In the vapor chamber of the present invention, when the case is formed of the first sheet and the second sheet, the end portions of the first sheet and the second sheet may be overlapped to be the same, or the end portions may be overlapped to be offset.
In the vapor chamber of the present invention, the material constituting the first sheet and the second sheet is not particularly limited as long as it has properties suitable for use as a vapor chamber, for example, thermal conductivity, strength, flexibility, and the like. The material constituting the first sheet and the second sheet is preferably a metal, and examples thereof include copper, nickel, aluminum, magnesium, titanium, iron, and the like, or an alloy containing these as a main component. The material constituting the first sheet and the second sheet is particularly preferably copper or a copper alloy.
In the vapor chamber of the present invention, the material constituting the first sheet may be different from the material constituting the second sheet. For example, by using a material having high strength for the first sheet, stress applied to the case can be dispersed. Further, by making the materials of the two different, one function can be obtained by one sheet and the other function can be obtained by the other sheet. The above-mentioned function is not particularly limited, but examples thereof include a heat conduction function and an electromagnetic wave shielding function.
In the vapor chamber of the present invention, the thickness of the first sheet and the second sheet is not particularly limited, but if the first sheet and the second sheet are too thin, the strength of the case is reduced and deformation is likely to occur. Therefore, the thicknesses of the first sheet and the second sheet are preferably 20 μm or more, and more preferably 30 μm or more, respectively. On the other hand, if the first sheet and the second sheet are too thick, it becomes difficult to make the entire soaking plate thinner. Therefore, the thickness of each of the first sheet and the second sheet is preferably 200 μm or less, more preferably 150 μm or less, and still more preferably 100 μm or less. The thicknesses of the first sheet and the second sheet may be the same or different.
In the vapor chamber of the present invention, the thickness of the first sheet may be constant, or there may be a thick portion and a thin portion. Likewise, the thickness of the second sheet may be constant, or there may be thicker and thinner portions.
In the vapor chamber according to the first embodiment of the present invention, a plurality of reinforcing members are disposed in the bent portion, but in the vapor chamber of the present invention, one reinforcing member may be disposed in the bent portion.
In the soaking plate according to the first embodiment of the present invention, the shape of each reinforcing member is the same, but in the soaking plate of the present invention, the shape of each reinforcing member may be different.
In the soaking plate according to the first embodiment of the present invention, the reinforcing members are arranged so that the ends in the extending direction are aligned, but in the soaking plate according to the present invention, the reinforcing members may be arranged so that the ends in the extending direction are offset.
In the soaking plate according to the first embodiment of the present invention, two reinforcing members form the reinforcing member group, but in the soaking plate of the present invention, three or more reinforcing members may form the reinforcing member group.
When a plurality of reinforcing member groups are arranged, the number and shape of the reinforcing members included in each reinforcing member group may be the same or different.
In the soaking plate according to the first embodiment of the present invention, a plurality of reinforcing member groups are arranged, but in the soaking plate of the present invention, a plurality of reinforcing members may be arranged at uniform intervals without forming the reinforcing member groups.
In the soaking plate according to the first embodiment of the present invention, the extending direction of the reinforcing member is orthogonal to the straight line along the bent portion, but in the soaking plate according to the present invention, the extending direction of the reinforcing member may not be orthogonal as long as it intersects the straight line along the bent portion.
In the soaking plate according to the first embodiment of the present invention, the end portion of the core for the reinforcing member is aligned with the end portion of the core in the extending direction of the reinforcing member, but in the soaking plate according to the present invention, the end portion of the core for the reinforcing member may not be aligned with the end portion of the core. That is, in the vapor chamber of the present invention, the end portion of the reinforcing member core may protrude from the end portion of the core or may be located inside the end portion of the core in the extending direction of the reinforcing member.
In the vapor chamber of the present invention, the reinforcing-member core may be disposed so as to cover an end portion of the core in the extending direction of the reinforcing member.
In the vapor chamber according to the first embodiment of the present invention, the support is disposed between the first sheet and the second sheet, but the support may not be disposed in the vapor chamber of the present invention.
The vapor chamber of the present invention can be installed in an electronic device with heat dissipation as a purpose. Therefore, the electronic device having the vapor chamber of the present invention is also one of the present invention. As the electronic device of the present invention, for example, a smartphone, a tablet terminal, a notebook computer, a game device, a wearable device, and the like can be cited. The soaking plate of the present invention can operate autonomously without external power as described above, and can two-dimensionally expand the heat dissipation by utilizing the latent heat of evaporation and condensation of the working fluid. Therefore, through possessing the utility model discloses a soaking plate or heat radiation equipment's electronic equipment can realize the heat dissipation effectively in the inside limited space of electronic equipment.
Claims (12)
1. A vapor chamber is characterized by comprising:
a case having a first region, a second region located apart from the first region, and a bendable portion bendable at a boundary between the first region and the second region;
a working fluid sealed in the internal space of the housing;
a core disposed in the inner space of the housing; and
a reinforcing member disposed in an inner space of the case at the bent portion and extending from the first region toward the second region,
the reinforcing member includes a core material and a reinforcing member core material, the reinforcing member core material is disposed on at least a part of an outer periphery of the core material,
the reinforcing member core is in contact with the core existing in the first region and the core existing in the second region.
2. The soaking plate according to claim 1,
the yield strength of the core material is greater than the yield strength of the shell.
3. The soaking plate according to claim 1 or 2,
a reinforcing member group including two or more adjacent reinforcing members separated by a first distance a is disposed in an internal space of the case at the bent portion.
4. The soaking plate according to claim 3,
the plurality of reinforcing member sets are arranged in the inner space of the case at the bent portion at a second interval b larger than the first interval a.
5. The soaking plate according to claim 4,
in the bent portion of the case, a relation of a < c ≦ b is satisfied where c is a height of the internal space where the reinforcing member is not disposed.
6. The soaking plate according to any one of claims 1 to 5, wherein,
the core material is hollow.
7. The soaking plate according to any one of claims 1 to 6, wherein,
the cross-sectional shape of the core material as viewed in a direction extending from the first region toward the second region is circular, elliptical, or oblong.
8. The soaking plate according to any one of claims 1 to 7, wherein,
the core present in the first region and the core present in the second region are independently configured.
9. The soaking plate according to any one of claims 1 to 7, wherein,
the core is also disposed in an internal space of the case located at the bent portion,
the core present in the first region and the core present in the second region are integrally formed.
10. The soaking plate according to any one of claims 1 to 9, wherein,
the case further includes a third region located apart from the first region and another bendable portion bendable at a boundary between the first region and the third region,
another reinforcing member extending from the first region toward the third region is disposed in an internal space of the case located in the other bent portion,
the reinforcing member core of the other reinforcing member is in contact with the core existing in the first region and the core existing in the third region.
11. The soaking plate according to any one of claims 1 to 10, wherein,
the case is bent at the bent portion.
12. An electronic device, characterized in that,
a vapor chamber comprising the vapor chamber according to any one of claims 1 to 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-044339 | 2020-03-13 | ||
| JP2020044339A JP2021143809A (en) | 2020-03-13 | 2020-03-13 | Vapor chamber and electronic device |
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| Publication Number | Publication Date |
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| CN215177144U true CN215177144U (en) | 2021-12-14 |
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| CN202120522925.8U Active CN215177144U (en) | 2020-03-13 | 2021-03-12 | Vapor chamber and electronic apparatus |
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| JP (1) | JP2021143809A (en) |
| CN (1) | CN215177144U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7315121B1 (en) * | 2021-09-30 | 2023-07-26 | 大日本印刷株式会社 | Vapor chamber, electronics and method of making vapor chamber |
| CN115102014B (en) * | 2022-07-11 | 2024-11-19 | 中国工程物理研究院激光聚变研究中心 | Optical fiber laser |
| CN218784044U (en) * | 2022-10-18 | 2023-03-31 | 广东畅能达科技发展有限公司 | A bendable vapor chamber |
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- 2020-03-13 JP JP2020044339A patent/JP2021143809A/en active Pending
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