WO2022244628A1 - ヒートシンク構造 - Google Patents
ヒートシンク構造 Download PDFInfo
- Publication number
- WO2022244628A1 WO2022244628A1 PCT/JP2022/019594 JP2022019594W WO2022244628A1 WO 2022244628 A1 WO2022244628 A1 WO 2022244628A1 JP 2022019594 W JP2022019594 W JP 2022019594W WO 2022244628 A1 WO2022244628 A1 WO 2022244628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- corrugated
- fins
- fluid
- holes
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 239000012809 cooling fluid Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 description 9
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
- F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0366—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by spaced plates with inserted elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
Definitions
- the present invention relates to a heat sink structure that is suitable for cooling a heating element made up of an electronic circuit device that generates a large amount of heat, such as a CPU (Central Processing Unit) of a computer or a chipset.
- a CPU Central Processing Unit
- this type of heat sink structure includes a base on which a heating element is placed, and a plurality of plate-like fins supported on the base in parallel with each other at intervals. direction), the cooling fluid flows in the direction in which the plate-like fins are arranged, and the heat is dissipated into the cooling fluid in the process of sequentially passing through the through holes of each fin.
- Patent Documents 1 and 2 for example.
- the heat sink structure configured such that a cooling fluid such as air flows through the plate-like fins having many through holes, heat transfer is achieved according to the contact area between the cooling fluid and the through holes. performance is obtained. That is, in the heat sink structure as described above, there is a tendency that the smaller the diameter of the through-holes and the larger the number of through-holes, the better the cooling performance.
- the plate-like fins installed on the base of the heat sink structure It is also conceivable to increase the width dimension (installation height).
- the heat sink cannot be installed in a place where space is limited, and the range of application is limited.
- the present invention aims to solve the problem by improving the cooling performance while suppressing the pressure loss of the cooling fluid even when the flow passage area is limited.
- the point is to provide a heat sink structure.
- the present invention includes the following inventions.
- Metal corrugated fins having a corrugated cross-sectional shape and having a plurality of through-holes opening in the plate surface, absorb the heat of the object to be cooled, and transfer the heat to the corrugated plate and a fluid passage for supplying a cooling fluid toward the plate surface of the corrugated fins and causing the fluid to flow along the through holes, wherein the heat absorbing portion a heat sink structure in which the heat transferred from to the corrugated fins is dissipated into the fluid passing through the through holes.
- the heat absorption part is a heat pipe
- the mountain-shaped part and the valley-shaped part have a curvature radius corresponding to the heat pipe
- the heat pipe is at least one of the mountain-shaped part or the valley-shaped part
- a plurality of the corrugated fins are arranged with the plate surfaces facing each other at intervals, and the fluid is sequentially supplied toward the plate surfaces of the corrugated fins.
- a heat sink structure according to any one of (1) to (4).
- the cross-sectional shape of the corrugated fins having the through holes for heat dissipation is formed in a corrugated shape, the total circumferential length of the corrugated fins per the same cross-sectional area of the flow path is Since the fins are longer than the flat fins, the contact area between the cooling fluid and the corrugated fins is increased compared to the flat fins. As the contact area between the cooling fluid and the corrugated fins increases, the number of through-holes also increases. The flow velocity of the fluid is suppressed, and the pressure loss of the fluid can be suppressed. Therefore, it is possible to sufficiently improve the cooling performance of the heat sink without providing a powerful fan in the fluid flow path, and to avoid the problems of increased power consumption and noise.
- the cooling efficiency is lower than that of flat fins. Since the contact area between the fluid and the corrugated fins can be increased by about 57%, there is an advantage that a simpler structure can provide a better heat exchange capacity.
- the heat absorbing portion is a heat pipe
- the mountain-shaped portion and the valley-shaped portion have a radius of curvature corresponding to the heat pipe
- the heat pipe has at least one of the mountain-shaped portion and the valley-shaped portion.
- the through holes are formed to extend in the plate thickness direction of the corrugated fins, the circulation resistance of the cooling fluid passing through the through holes is reduced, and the pressure loss is suppressed. Since heat can be efficiently dissipated, the cooling performance of the heat sink can be further improved.
- a plurality of corrugated fins are arranged with their plate surfaces facing each other at intervals, and the fluid is sequentially supplied toward the plate surfaces of the respective corrugated fins.
- each of the corrugated fins is formed by bending a cut piece of a lotus-type porous metal molded body having a plurality of pores extending in one direction and formed by a metal solidification method
- each of the corrugated fins It can be easily manufactured at a lower cost than when the through hole is machined by drilling or the like.
- the contact area with the cooling fluid can be doubled, so a higher heat exchange capacity can be obtained, and pressure loss in the cooling fluid can be suppressed. , has the advantage of providing a low-noise heat sink.
- FIG. 4 is a partial cross-sectional view showing a flow state of cooling fluid
- FIG. 11 is a perspective view showing a main part of a modification of the heat sink structure of the present invention.
- FIG. 10 is a cross-sectional plan view showing another modification of the heat sink structure of the present invention.
- FIG. 11 is a plan cross-sectional view showing still another modification of the heat sink structure of the present invention;
- FIG. A heat sink structure 1 according to a representative embodiment of the present invention has a wavy cross-sectional shape made of a metal material such as aluminum, iron, or copper, and is provided with a plurality of through holes 21 opening in a plate surface 20 thereof.
- the heat absorbing parts 3 and 4 are formed in a rectangular plate shape from a metal material such as aluminum, iron, or copper.
- An object to be cooled (not shown) such as a CPU on a computer board is placed in close contact with the upper surface of the heat absorbing portion 3 or the like, and heat from the object to be cooled is transferred to the heat absorbing portion 3. configured to absorb heat.
- the shape of the heat absorbing portions 3 and 4 is not limited to a rectangular plate shape, and one of the heat absorbing portions 3 and 4 may be omitted.
- these heat absorbing portions 3 and 4 may be conventional plate-like heat radiation fins of a heat sink, and corrugated plate-like fins 2 may be provided between these heat radiation fins.
- the object to be cooled according to the present invention is not limited to a CPU, but may be a chipset or the like, which is an electronic circuit device that generates a large amount of heat, or other heat-generating bodies.
- a plurality of corrugated fins 2 are arranged parallel to each other with the plate surfaces facing each other at a constant interval.
- the heat absorbing portions 3 and 4 are integrally joined by brazing or the like.
- Fluid such as air blown between the heat absorbing portions 3 and 4 by an unillustrated blower fan or the like provided in the fluid flow path 5 is sequentially supplied toward the plate surface 20 of each corrugated fin 2. is configured as As a result, the cooling fluid flows along the through holes 21 of the corrugated fins 2, and the heat transferred to the corrugated fins 2 is dissipated into the fluid.
- the corrugated fins 2 are formed by cutting a lotus-type porous metal molded body having a large number of pores extending in one direction and formed by a metal solidification method, for example, in a direction intersecting with the direction in which the pores extend. It is formed using the material 2a (see FIG. 2) or the like.
- the above-mentioned lotus-type porous metal compact is formed by a known method such as a pressurized gas method (for example, the method disclosed in Japanese Patent No. 4235813 (JP)) or a thermal decomposition method. be.
- the plate-shaped material 2a cut out from the lotus-type porous metal compact has through-holes formed of the pores, that is, openings on the plate surface of the plate-shaped material 2a.
- a plurality of through holes 21 extending in the plate thickness direction are formed.
- a skin region 23 having no pores is formed on the periphery of the plate-shaped material 2a by the inner wall of the mold used for molding.
- a plurality of through-holes 21 are formed to form a continuum of a semi-circular mountain-shaped portion 24 and a semi-circular valley-shaped portion 25. are formed.
- the portion protruding in the direction along the fluid flow is defined as the mountain-shaped portion 24, and the portion recessed in the direction opposite to the fluid flow is defined as the valley-shaped portion 25. Define.
- the number of through holes 21 provided in the fluid flow path 5 increases.
- the flow velocity of the fluid passing through each through-hole 21 is suppressed, and the pressure loss of the fluid can be suppressed. Therefore, the cooling performance of the heat sink can be fully exhibited without using a powerful fan, and the problems of increased power consumption and noise can be avoided.
- the cross-sectional shape is curved in a sine curve or an elliptical shape.
- a corrugated fin having a cross-sectional shape consisting of a continuum of ridges and valleys or a continuum of triangular ridges and valleys may be used.
- the through holes 21 are formed to extend in the thickness direction of the corrugated fins 2
- the through holes 21 are inclined at a constant angle with respect to the thickness direction of the corrugated fins 2. It is also possible to have a structure in which a plurality of through holes are provided.
- the cooling fluid is supplied to each of the through holes 21... It can be made to flow evenly and smoothly along the As a result, the flow resistance of the cooling fluid passing through the through-holes 21 can be reduced, the pressure loss can be suppressed, and heat can be efficiently dissipated in the fluid.
- the plurality of corrugated fins 2 are arranged with their plate surfaces opposed to each other at intervals, and the plate surface 20 of each corrugated plate fin 2 is directed toward the plate surface 20 for cooling. are sequentially supplied and flow along the respective through-holes 21 .
- the heat transferred from the heat absorbing portion 3 to each corrugated fin 2 is sequentially dissipated into the fluid passing through the through-holes 21 of each corrugated fin 2, thereby cooling in stages. Therefore, the cooling performance of the heat sink can be sufficiently ensured without taking measures such as increasing the width dimension (installation height) of the corrugated plate-like fins 2 . Therefore, it is possible to install the heat sink even in a place with a narrow space, and there are advantages such as being able to be made thinner and more compact than the conventional heat sink structure.
- the plurality of corrugated fins 2 are arranged in parallel at regular intervals, that is, as shown in FIG. 24 and 24 and valley portions 25 and 25 are arranged in the same direction, the peak portions 24 and valley portions of the corrugated fins 2 and 2 adjacent to each other are arranged in the same direction.
- the corrugated fins 2 can be arranged at appropriate intervals while preventing contact with the portion 25 .
- the lotus-type porous metal molded body having a plurality of pores extending in one direction which is molded by a metal solidification method, is cut in a direction intersecting with the direction in which the pores extend, thereby forming a plate-like material.
- the plate-shaped material 2a is bent into a corrugated shape to form the corrugated fins 2. Therefore, the corrugated plate can be manufactured at a lower cost than the case where a plurality of through-holes are machined by drilling or the like.
- the shaped fins 2 can be easily manufactured.
- the skin regions 23 are formed around the corrugated fins 2 as described above, the bonding areas between the heat absorbing portions 3 and 4 and the respective corrugated fins 2 are secured, and sufficient bonding strength is maintained.
- FIG. 4 shows a modification of the heat sink structure according to the present invention.
- the heat sink structure 1a according to this modification is configured to transfer heat by vacuum-sealing a working fluid in a copper tube, generating convection according to the temperature difference between both ends, and circulating the working fluid.
- a plurality of corrugated fins 2 each comprising a heat absorbing portion composed of a heat pipe 30 and a continuum of semicircular peak portions 24 and semicircular valley portions 25 having a radius of curvature corresponding to the heat pipe 30. It has
- Each corrugated plate-like fin 2 is arranged in parallel with an interval corresponding to the diameter of the heat pipe 30, and the heat pipe 30 is arranged between the corrugated plate-like fins 2, 2 facing each other.
- a half peripheral portion of the heat pipe 30 located on one side portion side is joined to the inner peripheral surface of the mountain portion 24 , and the other side portion of the heat pipe 30 is joined to the outer peripheral surface of the valley portion 25 . It is As a result, the heat of the working fluid moving inside the heat pipe 30 is transferred from the heat pipe 30 to the corrugated fins 2 .
- the fluid blown through the fluid flow passages 5 is sequentially supplied toward the plate surface 20 of each corrugated fin 2, and the fluid flows along the through holes 21 of each corrugated fin 2. Then, the heat of the corrugated fins 2 is radiated in this fluid, so that the cooling effect of the heat sink is exhibited.
- the corrugated plate-like fin 2 is formed by a continuous body of the circular mountain-shaped portion 24 and the semi-circular valley-shaped portion 25, and the radius of curvature of the mountain-shaped portion 24 and the valley-shaped portion 25 is adjusted to the heat pipe 30.
- the heat pipe 30 and the corrugated fins 2 are brazed or the like in a state in which the peripheral surface of the heat pipe 30 is closely aligned with the inner peripheral surface of the chevron portion 24 so as to be firmly fixed. While being able to join, heat can be efficiently transmitted from the heat pipe 30 to the corrugated fins 2 .
- the half peripheral portion of the heat pipe 30 located on one side portion is joined along the inner peripheral surface of the chevron portion 24, and the other side portion of the heat pipe 30 is
- the valley portions 25 are brought into contact with the outer peripheral surface
- the peak portions 24 and the valley portions 25 of the pair of corrugated fins 2, 2 adjacent to each other are connected to each other. They may be arranged so as to face each other, and the heat pipe 30 may be arranged between the mountain-shaped portion 24 and the valley-shaped portion 25 to join them.
- the contact area between the heat pipe 30 and the corrugated fins 2 is increased, and the heat pipes 30 and the corrugated fins 2 can be joined more firmly.
- the mountain-shaped portions 24 and the valley-shaped portions 25 respectively provided on the pair of corrugated plate-like fins 2, 2 adjacent to each other are arranged so as to face each other, and the mountain-shaped portions 24
- a plurality of heat sink units 10, in which the heat pipes 30 are arranged and joined between the heat sinks 10 and the trough portions 25, may be formed and stacked on top of each other.
- the heat sink structure 1c configured in this way the number of the corrugated fins 2 can be easily increased as necessary, so that the heat flows along the through holes 21 of the corrugated fins 2.
- the amount of heat dissipated in the flowing fluid can be significantly increased.
- the present invention is not limited to such embodiments.
- it may be implemented in various forms without departing from the scope of the present invention, such as a water-cooling/liquid-cooling system that circulates a cooling fluid composed of a cooling liquid.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
2 波板状フィン
2a 板状素材
3,4 吸熱部
5 流体流路
10 ヒートシンクユニット
8 電子基板
9 冷却対象物
20 板面
21 貫通孔
23 スキン領域
24 山形部
25 谷形部
30 ヒートパイプ
Claims (6)
- 断面形状が波形に形成されるとともに、その板面に開口する複数の貫通孔が設けられた金属製の波板状フィンと、
冷却対象物の熱を吸熱して、該熱を前記波板状フィンに伝達する吸熱部と、
前記波板状フィンの板面に向けて冷却用の流体を供給することにより、該流体を前記貫通孔に沿って流動させる流体流路とを備え、
前記吸熱部から前記波板状フィンに伝達された熱が、前記貫通孔を通過する流体中に放散されるヒートシンク構造。 - 前記波板状フィンは、断面形状が半円形状の山形部と、半円形状の谷形部との連続体からなる請求項1記載のヒートシンク構造。
- 前記吸熱部は、ヒートパイプであり、
前記山形部及び前記谷形部が、前記ヒートパイプに対応した曲率半径を有し、
前記ヒートパイプは前記山形部もしくは前記谷形部の少なくとも一方の内周面に沿って接合されている請求項2記載のヒートシンク構造。 - 前記貫通孔が、前記波板状フィンの板厚方向に延びる孔である請求項1~3の何れか1項にヒートシンク構造。
- 複数枚の前記波板状フィンが、板面同士を対向させた状態に間隔を置いて配設され、
前記流体が、前記各波板状フィンの板面に向けて順次、供給される請求項1~4の何れか1項に記載のヒートシンク構造。 - 前記波板状フィンが、金属凝固法で成形された一方向に伸びた複数の気孔を有するロータス型ポーラス金属成形体の切断片の曲げ加工品である請求項1~5の何れか1項に記載のヒートシンク構造。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112022002737.1T DE112022002737T5 (de) | 2021-05-20 | 2022-05-06 | Kühlkörperstruktur |
CN202280035789.7A CN117337618A (zh) | 2021-05-20 | 2022-05-06 | 热沉结构 |
US18/290,231 US20240237290A1 (en) | 2021-05-20 | 2022-05-06 | Heat sink structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-085286 | 2021-05-20 | ||
JP2021085286A JP2022178467A (ja) | 2021-05-20 | 2021-05-20 | ヒートシンク構造 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022244628A1 true WO2022244628A1 (ja) | 2022-11-24 |
Family
ID=84140647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2022/019594 WO2022244628A1 (ja) | 2021-05-20 | 2022-05-06 | ヒートシンク構造 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240237290A1 (ja) |
JP (1) | JP2022178467A (ja) |
CN (1) | CN117337618A (ja) |
DE (1) | DE112022002737T5 (ja) |
TW (1) | TW202303073A (ja) |
WO (1) | WO2022244628A1 (ja) |
Citations (6)
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JPH08320194A (ja) * | 1994-10-03 | 1996-12-03 | Sumitomo Metal Ind Ltd | Lsiパッケージ冷却用コルゲート型放熱フィン |
JPH10200278A (ja) * | 1997-01-13 | 1998-07-31 | Yaskawa Electric Corp | 冷却装置 |
JP2005317884A (ja) * | 2004-04-26 | 2005-11-10 | Atago Seisakusho:Kk | 半導体チップの冷却装置 |
WO2007017945A1 (ja) * | 2005-08-11 | 2007-02-15 | Mitsubishi Denki Kabushiki Kaisha | ヒートシンクおよびその製造方法 |
JP3175160U (ja) * | 2012-01-11 | 2012-04-26 | 順一郎 竹田 | ヒートシンク |
WO2020235217A1 (ja) * | 2019-05-21 | 2020-11-26 | 株式会社ロータス・サーマル・ソリューション | 冷却装置における冷却液の熱を取り出す熱交換構造、及び該熱交換構造を備える冷却装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3669569B2 (ja) | 2000-06-14 | 2005-07-06 | 三菱電機株式会社 | 冷却装置 |
JP4458872B2 (ja) | 2004-02-13 | 2010-04-28 | 三菱電機株式会社 | ヒートシンク |
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2021
- 2021-05-20 JP JP2021085286A patent/JP2022178467A/ja active Pending
-
2022
- 2022-05-06 WO PCT/JP2022/019594 patent/WO2022244628A1/ja active Application Filing
- 2022-05-06 US US18/290,231 patent/US20240237290A1/en active Pending
- 2022-05-06 DE DE112022002737.1T patent/DE112022002737T5/de active Pending
- 2022-05-06 CN CN202280035789.7A patent/CN117337618A/zh active Pending
- 2022-05-10 TW TW111117431A patent/TW202303073A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08320194A (ja) * | 1994-10-03 | 1996-12-03 | Sumitomo Metal Ind Ltd | Lsiパッケージ冷却用コルゲート型放熱フィン |
JPH10200278A (ja) * | 1997-01-13 | 1998-07-31 | Yaskawa Electric Corp | 冷却装置 |
JP2005317884A (ja) * | 2004-04-26 | 2005-11-10 | Atago Seisakusho:Kk | 半導体チップの冷却装置 |
WO2007017945A1 (ja) * | 2005-08-11 | 2007-02-15 | Mitsubishi Denki Kabushiki Kaisha | ヒートシンクおよびその製造方法 |
JP3175160U (ja) * | 2012-01-11 | 2012-04-26 | 順一郎 竹田 | ヒートシンク |
WO2020235217A1 (ja) * | 2019-05-21 | 2020-11-26 | 株式会社ロータス・サーマル・ソリューション | 冷却装置における冷却液の熱を取り出す熱交換構造、及び該熱交換構造を備える冷却装置 |
Also Published As
Publication number | Publication date |
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JP2022178467A (ja) | 2022-12-02 |
US20240237290A1 (en) | 2024-07-11 |
DE112022002737T5 (de) | 2024-04-04 |
CN117337618A (zh) | 2024-01-02 |
TW202303073A (zh) | 2023-01-16 |
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