TWI813873B - Flexible wick structure and deformable heat-dissipating unit using the same - Google Patents
Flexible wick structure and deformable heat-dissipating unit using the same Download PDFInfo
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- TWI813873B TWI813873B TW109112820A TW109112820A TWI813873B TW I813873 B TWI813873 B TW I813873B TW 109112820 A TW109112820 A TW 109112820A TW 109112820 A TW109112820 A TW 109112820A TW I813873 B TWI813873 B TW I813873B
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 89
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
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- 238000001704 evaporation Methods 0.000 description 22
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Abstract
本發明提供一種柔性毛細結構及具彈性變形的散熱單元，該散熱單元包括一散熱本體及一柔性毛細結構，該散熱本體具有一上板、一腔室及一下板，該柔性毛細結構設於該腔室內，其包含一毛細主體及複數可受壓彈性變形的延伸部係從該毛細主體的一側向外延伸構成，以撐起該毛細主體，且該複數延伸部與該毛細主體共同界定一軸向位移空間，該毛細主體及該複數延伸部其中一者係接觸該上板或該下板內側。 The invention provides a flexible capillary structure and an elastically deformable heat dissipation unit. The heat dissipation unit includes a heat dissipation body and a flexible capillary structure. The heat dissipation body has an upper plate, a chamber and a lower plate. The flexible capillary structure is located on the In the chamber, it includes a capillary body and a plurality of compression-elastically deformable extension parts extending outward from one side of the capillary body to support the capillary body, and the plurality of extension parts and the capillary body jointly define a In the axial displacement space, one of the capillary body and the plurality of extensions contacts the inside of the upper plate or the lower plate.
Description
本發明有關於一種柔性毛細結構及具彈性變形的散熱單元，尤指一種具有可受壓變形之功能的柔性毛細結構及具彈性變形的散熱單元。 The present invention relates to a flexible capillary structure and an elastically deformable heat dissipation unit, and in particular, to a flexible capillary structure and an elastically deformable heat dissipation unit that can be deformed under pressure.
現有均溫板是由上、下兩片金屬板件直接焊接(結合)組成一真空腔體，該腔體(即腔室)內壁設有毛細結構(如燒結粉末體、網格體、纖維體或溝槽等)與工作流體等，使均溫板可將熱源之熱量快速傳導到大面積均溫進行冷卻，以讓均溫板成為一種高性能散熱裝置。 The existing vapor chamber is composed of upper and lower metal plates that are directly welded (joined) to form a vacuum cavity. The inner wall of the cavity (i.e., chamber) is provided with a capillary structure (such as sintered powder body, mesh body, fiber body, etc.) body or groove, etc.) and working fluid, etc., so that the vapor chamber can quickly conduct the heat from the heat source to a large area for uniform cooling, making the vapor chamber a high-performance heat dissipation device.
然，現有均溫板的整體結構是固定並沒有辦法依需求做變化，例如該均溫板的腔室內的高度是被固定的無法軸向位移變化，以及毛細結構係同樣水平直接形成固定在腔室之內壁上，無法產生軸向位移變形。當均溫板被固定貼設在一電子裝置(如電腦、筆記型電腦、3C電子產品或通訊裝置)內的一電路板(如主機板)上的一發熱元件(如處理器、圖形處理器)時，因該電路板的發熱元件周圍還佈設有複數其他電子元件(包含被動電子元件)，使該均溫板組裝貼在該發熱元件上的一安裝空間範圍大小會受到限制，且該發熱元件與周圍其他電子元件有一定高度差，所以在組裝上常常發生該均溫板的整體體積大於該發熱元件的安裝空間而無法組裝使用，或是受到周圍其他電子元件阻礙而造成均溫板無法組裝使用的問題，以及無法提供一具彈性之高度變化差的均溫板以應付各種需求者。 However, the overall structure of the existing vapor chamber is fixed and cannot be changed according to needs. For example, the height of the chamber of the vapor chamber is fixed and cannot be changed by axial displacement, and the capillary structure is formed directly at the same level and fixed in the chamber. There is no axial displacement deformation on the inner wall of the chamber. When the vapor chamber is fixedly attached to a heating element (such as a processor, graphics processor) on a circuit board (such as a motherboard) in an electronic device (such as a computer, laptop, 3C electronic product or communication device) ), because there are a plurality of other electronic components (including passive electronic components) arranged around the heating element of the circuit board, the size of the installation space where the vapor chamber assembly is attached to the heating element will be limited, and the heating element There is a certain height difference between the component and other surrounding electronic components. Therefore, during assembly, it often happens that the overall volume of the vapor chamber is larger than the installation space of the heating element and cannot be assembled and used, or it is blocked by other surrounding electronic components, causing the vapor chamber to fail. There are problems with assembly and use, as well as the inability to provide a flexible vapor chamber with varying heights to meet various needs.
本發明之一目的在提供一種具有受壓變形功能的柔性毛細結構。 One object of the present invention is to provide a flexible capillary structure with a function of deformation under pressure.
本發明之另一目的在提供一種可達到增加結構彈性度的柔性毛細結構。 Another object of the present invention is to provide a flexible capillary structure that can increase the elasticity of the structure.
本發明之另一目的在提供一種具有受壓變形功能的具彈性變形的散熱單元。 Another object of the present invention is to provide an elastically deformable heat dissipation unit with a compressive deformation function.
本發明之另一目的在提供一種可達到增加結構彈性度的具彈性變形的散熱單元。 Another object of the present invention is to provide an elastically deformable heat dissipation unit that can increase structural elasticity.
為達上述目的，本發明係提供一種柔性毛細結構，係應用於一散熱單元，該柔性毛細結構包括一毛細主體及複數可受壓彈性變形的延伸部，該複數延伸部從該毛細主體的一側向外延伸構成，以撐起該毛細主體，且該複數延伸部與該毛細主體共同界定一軸向位移空間。 In order to achieve the above object, the present invention provides a flexible capillary structure, which is applied to a heat dissipation unit. The flexible capillary structure includes a capillary body and a plurality of extension parts that can be elastically deformed under pressure. The plurality of extension parts are formed from a part of the capillary body. Laterally extending outwardly is formed to support the capillary body, and the plurality of extensions and the capillary body jointly define an axial displacement space.
本發明另一提供一種具彈性變形的散熱單元，包括一散熱本體及一柔性毛細結構體，該散熱本體具有一上板、一腔室及一與該上板相蓋合的下板，該腔室內填充有一工作流體，該柔性毛細結構設於該腔室內，該柔性毛細結構包含一毛細主體及複數可受壓彈性變形的延伸部，該複數延伸部從該毛細主體的一側向外延伸構成，以撐起該毛細主體，且該複數延伸部與該毛細主體共同界定一軸向位移空間，該毛細主體及該複數延伸部其中一者係接觸該上板或下板內側。 Another aspect of the present invention provides an elastically deformable heat dissipation unit, which includes a heat dissipation body and a flexible capillary structure. The heat dissipation body has an upper plate, a chamber, and a lower plate covering the upper plate. The chamber The chamber is filled with a working fluid, and the flexible capillary structure is located in the chamber. The flexible capillary structure includes a capillary body and a plurality of extension parts that can be elastically deformed under pressure. The plurality of extension parts extend outward from one side of the capillary body. , to support the capillary body, and the plurality of extension parts and the capillary body jointly define an axial displacement space, and one of the capillary body and the plurality of extension parts is in contact with the inside of the upper plate or the lower plate.
所以透過上述本發明的設計，使得可達到兼具有可受壓變形及毛細力的功能，且還有效達到增加結構彈性度的效果。 Therefore, through the above-mentioned design of the present invention, it is possible to achieve both the functions of pressure deformation and capillary force, and also effectively achieve the effect of increasing the elasticity of the structure.
11、13:柔性毛細結構 11, 13: Flexible capillary structure
111、131:毛細主體 111, 131: Capillary body
112、132:延伸部 112, 132: Extension part
1121、1321:固定端 1121, 1321: fixed end
1123、1323:自由端 1123, 1323: Free end
11231、13231:抵接部 11231, 13231: Contact part
114:軸向位移空間 114: Axial displacement space
H1、H2:第一、二高度 H1, H2: first and second height
2:散熱單元 2: Cooling unit
20:散熱本體 20: Cooling body
201:蒸發部 201: Evaporation department
202:冷凝部 202:Condensation part
21:上板 21:On the board
211:基部 211:Base
212:側部 212: Side
22:下板 22: Lower board
23:腔室 23: Chamber
24:毛細結構 24: Capillary structure
25:彈性支撐件 25: Elastic support
251:支撐頂部 251: Support top
252:支撐底部 252: Support bottom
第1A圖係本發明之第一實施例之柔性毛細結構立體示意圖。 Figure 1A is a schematic three-dimensional view of the flexible capillary structure according to the first embodiment of the present invention.
第1B圖係本發明之圖1A之柔性毛細結構俯視示意圖。 Figure 1B is a schematic top view of the flexible capillary structure of Figure 1A of the present invention.
第2圖係本發明之第二實施例之散熱單元之分解立體示意圖。 Figure 2 is an exploded perspective view of the heat dissipation unit according to the second embodiment of the present invention.
第3圖係本發明之第二實施例之彈性變形的散熱單元之組合立體示意圖。 Figure 3 is a schematic perspective view of the assembly of an elastically deformed heat dissipation unit according to the second embodiment of the present invention.
第4A圖係本發明之第二實施例之散熱單元呈恢復原先(未受壓變形)狀態示意圖。 Figure 4A is a schematic diagram of the heat dissipation unit in the second embodiment of the present invention restored to its original state (not deformed under pressure).
第4B圖係本發明之第二實施例之散熱單元呈受壓變形狀態示意圖。 Figure 4B is a schematic diagram of the heat dissipation unit in a compressed deformation state according to the second embodiment of the present invention.
第4C圖係本發明之第二實施例之在另一替代實施例之散熱單元組合剖面示意圖。 Figure 4C is a schematic cross-sectional view of the heat dissipation unit assembly in another alternative embodiment of the second embodiment of the present invention.
第5A圖係本發明之第二實施例之在另一替代實施例之散熱單元組合剖面示意圖。 Figure 5A is a schematic cross-sectional view of the heat dissipation unit assembly in another alternative embodiment of the second embodiment of the present invention.
第5B圖係本發明之圖5A之散熱單元之分解立體示意圖。 Figure 5B is an exploded perspective view of the heat dissipation unit of Figure 5A according to the present invention.
第6A圖係本發明之第二實施例之在另一替代實施例之散熱單元之分解立體示意圖。 Figure 6A is an exploded perspective view of a heat dissipation unit in another alternative embodiment of the second embodiment of the present invention.
第6B圖係本發明之第二實施例之在另一替代實施例之散熱單元呈恢復原先(未受壓變形)狀態示意圖。 Figure 6B is a schematic diagram of the heat dissipation unit in another alternative embodiment of the second embodiment of the present invention restored to its original (not deformed under pressure) state.
第6C圖係本發明之第二實施例之在另一替代實施例之散熱單元呈受壓變形狀態示意圖。 Figure 6C is a schematic diagram of the heat dissipation unit in another alternative embodiment of the second embodiment of the present invention in a compressed deformation state.
第7圖係本發明之第三實施例之散熱單元之分解立體示意圖。 Figure 7 is an exploded perspective view of the heat dissipation unit according to the third embodiment of the present invention.
第8圖係本發明之第三實施例之散熱單元之剖面示意圖。 Figure 8 is a schematic cross-sectional view of the heat dissipation unit according to the third embodiment of the present invention.
本發明之上述目的及其結構與功能上的特性，將依據所附圖式之較佳實施例予以說明。 The above objects and structural and functional characteristics of the present invention will be explained based on the preferred embodiments of the accompanying drawings.
本發明提供一種柔性毛細結構，請參閱第1A圖係本發明之第一實施例之柔性毛細結構立體示意圖；第1B圖係本發明之圖1之柔性毛細結構俯視示意圖。該柔性毛細結構11係應用於一散熱單元(如均溫板或熱板，圖中未示)內，該柔性毛細結構11可係為燒結粉末或網格體或編織體或纖維體，其材質可為金屬、非金 屬或塑料材質，本實施例中係選擇編織體來做說明，其藉由複數金屬絲線編織構成一多孔吸液毛細結構，該金屬絲線為銅絲線、不銹鋼絲線、鋁絲線、鎳絲線、鈦絲線、合金線或及其組合；或塑膠成型的多孔毛細結構體，且於本實施例的柔性毛細結構11的外觀形狀為呈一花朵狀體，且從圖1A俯視可看出如同仿菊花狀，但並不侷限於此，於具體實施時，該柔性毛細結構11的形狀也可為一爪狀體或一拱狀體或為其他形狀。並該柔性毛細結構11具有一毛細主體111及複數可受壓彈性變形的延伸部112，該毛細主體111與該延伸部112於本實施例分別表示為呈一圓形花心盤狀(如仿菊花的花心狀)與一花瓣狀(如仿菊花的花瓣狀)。其中該毛細主體111與複數延伸部112係一體成形。當然在其他實施例，該毛細主體111與延伸部112可為兩個獨立分開的元件，且透過連接方式(如黏接、焊接或嵌接)將毛細主體111與延伸部112結合為一體構成前述柔性毛細結構11，此外該毛細主體111及該複數延伸部112因非一體成形故其材質(金屬、非金屬、塑料)及毛細種類(燒結粉末或網格體或編織體或纖維體)可選為相同及或不相同任意搭配。 The present invention provides a flexible capillary structure. Please refer to Figure 1A, which is a three-dimensional schematic diagram of the flexible capillary structure of the first embodiment of the present invention; Figure 1B is a top view of the flexible capillary structure in Figure 1 of the present invention. The flexible capillary structure 11 is applied in a heat dissipation unit (such as a uniform temperature plate or a hot plate, not shown in the figure). The flexible capillary structure 11 can be a sintered powder or mesh body or braided body or fiber body, and its material Can be metal or non-gold metal or plastic material. In this embodiment, a braid is selected for illustration. It is woven with a plurality of metal wires to form a porous liquid-absorbing capillary structure. The metal wires are copper wires, stainless steel wires, aluminum wires, nickel wires, and titanium wires. Silk threads, alloy threads, or combinations thereof; or plastic-molded porous capillary structures. In this embodiment, the flexible capillary structure 11 has a flower-like appearance, and it can be seen from the top view of Figure 1A that it looks like an imitation chrysanthemum. , but is not limited to this. During specific implementation, the shape of the flexible capillary structure 11 may also be a claw-shaped body, an arch-shaped body, or other shapes. The flexible capillary structure 11 has a capillary main body 111 and a plurality of extension parts 112 that can be elastically deformed under pressure. In this embodiment, the capillary main body 111 and the extension parts 112 are respectively represented as a round flower-centered disk (such as imitation chrysanthemum). (like a flower center) and a petal shape (such as imitating the petals of a chrysanthemum). The capillary main body 111 and the plurality of extension parts 112 are integrally formed. Of course, in other embodiments, the capillary body 111 and the extension part 112 can be two independent and separate components, and the capillary body 111 and the extension part 112 are integrated through a connection method (such as bonding, welding or embedding) to form the aforementioned Flexible capillary structure 11. In addition, since the capillary main body 111 and the plurality of extension parts 112 are not formed in one piece, their materials (metal, non-metal, plastic) and capillary type (sintered powder or mesh or braid or fiber) can be selected. Any combination of the same or different.
又在另一實施例，該毛細主體111與該延伸部112分別為呈一多邊形狀(如三角形、五角形或矩形狀或不規則形狀)。 In yet another embodiment, the capillary body 111 and the extension portion 112 are each in a polygonal shape (such as a triangle, a pentagon, a rectangle or an irregular shape).
該複數延伸部112從該毛細主體111的一側向外往下方向延伸構成，亦即該複數延伸部112呈等距或不等距間隔環設形成在該毛細主體111的一底側上，以撐起該毛細主體111，且該複數延伸部112設有一固定端1121及一自由端1123，該複數延伸部112的該固定端1121連接對應的毛細主體111的底側，該自由端1123向外水平延伸有一抵接部11231，該抵接部11231具有增加接觸面積(包括毛細力的增加)和增加穩固性的功效。並該複數延伸部112與該毛細主體111共同界定一軸向位移 空間(高度)114，該軸向位移空間114係用以供該毛細主體111與該複數延伸部112跟毛細主體111連接的部分於該軸向位移空間114內軸向位移(如向上位移或向下位移或往復位移)。 The plurality of extending portions 112 extend outward and downward from one side of the capillary body 111, that is, the plurality of extending portions 112 are formed in an equidistant or unequal spaced ring on a bottom side of the capillary body 111. To support the capillary body 111, and the plurality of extension parts 112 are provided with a fixed end 1121 and a free end 1123. The fixed end 1121 of the plurality of extension parts 112 is connected to the bottom side of the corresponding capillary body 111, and the free end 1123 is directed toward A contact portion 11231 extends horizontally from the outside, and the contact portion 11231 has the effect of increasing the contact area (including the increase of capillary force) and increasing the stability. And the plurality of extension parts 112 and the capillary body 111 jointly define an axial displacement. Space (height) 114. The axial displacement space 114 is used for axial displacement (such as upward displacement or upward displacement) of the capillary body 111 and the plural extension portion 112 connected to the capillary body 111 in the axial displacement space 114. downward displacement or reciprocating displacement).
所以當該柔性毛細結構11的毛細主體111的一頂側上受到一軸向外力(如向下外力)施力時，該毛細主體111受到向下外力施力(如碰撞或與一散熱器組接的緊密力)而於該軸向位移空間114內向下位移，同時該複數延伸部112也會接收到該毛細主體111上傳來的軸向外力，使該複數延伸部112的自由端1123因受壓彈性變形而向外位移(即朝遠離該軸向位移空間114方向位移)，此時該柔性毛細結構11呈受壓變形狀態，待該毛細主體111的頂側上沒有受到軸向外力施力時，該複數延伸部112藉由其本身的彈性回復力朝該軸向位移空間114內方向位移，同時該複數延伸部112帶動其上該毛細主體111朝該軸向位移空間114向上位移，使該柔性毛細結構11恢復到原先狀態(即柔性毛細結構11呈未被受壓變形狀態)，所以透過本發明該柔性毛細結構11具有可受壓變形的功能可在受壓變形或未受壓變形時，皆可藉由該柔性毛細結構11的毛細主體111及延伸部112的毛細力將該散熱單元的一冷凝部(圖中未示)內冷凝後的工作液體快速回流到該散熱單元的一蒸發部(圖中未示)。 Therefore, when a top side of the capillary body 111 of the flexible capillary structure 11 is subjected to an axial external force (such as a downward external force), the capillary body 111 is subjected to a downward external force (such as a collision or contact with a radiator group). (connected tight force) and displaces downward in the axial displacement space 114. At the same time, the plurality of extension portions 112 will also receive the axial external force from the capillary body 111, so that the free end 1123 of the plurality of extension portions 112 will be affected by the force. The flexible capillary structure 11 is in a compressive deformation state until the top side of the capillary body 111 is not subjected to an axial external force. When , the plurality of extending portions 112 displaces toward the inner direction of the axial displacement space 114 by its own elastic restoring force, and at the same time, the plurality of extending portions 112 drives the capillary body 111 thereon to displace upward toward the axial displacement space 114 , so that The flexible capillary structure 11 is restored to its original state (that is, the flexible capillary structure 11 is not deformed under pressure), so through the present invention, the flexible capillary structure 11 has the function of being deformable under pressure and can be deformed under pressure or not. At any time, the condensed working liquid in a condensation part (not shown in the figure) of the heat dissipation unit can be quickly returned to a part of the heat dissipation unit by the capillary force of the capillary body 111 and the extension part 112 of the flexible capillary structure 11. Evaporation part (not shown in the figure).
因此，透過本發明此柔性毛細結構11的設計，使得可達到兼具有可受壓變形及毛細力的功能，且還有效達到增加結構彈性度的效果。 Therefore, through the design of the flexible capillary structure 11 of the present invention, it is possible to achieve both the functions of pressure deformation and capillary force, and also effectively achieves the effect of increasing the elasticity of the structure.
請參閱第2圖係本發明之第二實施例之散熱單元之分解立體示意圖；第3圖係本發明之第二實施例之散熱單元之組合立體示意圖；第4A圖係本發明之第二實施例之散熱單元呈恢復原先(未受壓變形)狀態示意圖；第4B圖係本發明之第二實施例之散熱單元呈受壓變形狀態示意圖；第4C圖係本發明之第二實施例之在另 一替代實施例之散熱單元組合剖面示意圖；第5A圖係本發明之第二實施例之在另一替代實施例之散熱單元組合剖面示意圖；第5B圖係本發明之圖5A之散熱單元之分解立體示意圖；第6A圖係本發明之第二實施例之在另一替代實施例之散熱單元之分解立體示意圖；第6B圖係本發明之第二實施例之在另一替代實施例之散熱單元呈恢復原先(未受壓變形)狀態示意圖；第6C圖係本發明之第二實施例之在另一替代實施例之散熱單元呈受壓變形狀態示意圖。如圖2、3、4A、4B所示中，並輔以參閱第1A、1B圖，該本實施例主要是將上述各實施例的柔性毛細結構11設於一具彈性變形的散熱單元2內，該散熱單元2於本實施例表示為一可受壓變形的均溫板，但不侷限於此，於具體實施時，該散熱單元2為一可受壓變形的熱板。並該散熱單元2包括一散熱本體20及一柔性毛細結構11，並於本實施例的柔性毛細結構11的結構及其功效與上述第一實施例的柔性毛細結構11的結構及其功效相同，故不再重新贅述。 Please refer to Figure 2, which is an exploded perspective view of the heat dissipation unit according to the second embodiment of the present invention; Figure 3, which is an assembled perspective view of the heat dissipation unit according to the second embodiment of the present invention; Figure 4A, which is the second embodiment of the present invention. Figure 4B is a schematic diagram of the heat dissipation unit in a compressed and deformed state according to the second embodiment of the present invention; Figure 4C is a schematic diagram of the second embodiment of the present invention. Other Figure 5A is a schematic cross-sectional view of the heat dissipation unit assembly in an alternative embodiment; Figure 5A is a schematic cross-sectional view of the heat dissipation unit assembly in another alternative embodiment of the second embodiment of the present invention; Figure 5B is an exploded view of the heat dissipation unit in Figure 5A of the present invention Three-dimensional schematic view; Figure 6A is an exploded three-dimensional schematic view of the heat dissipation unit of the second embodiment of the present invention in another alternative embodiment; Figure 6B is the heat dissipation unit of the second embodiment of the present invention in another alternative embodiment. It is a schematic diagram of the heat dissipation unit in the second embodiment of the present invention in another alternative embodiment of the present invention, which is a schematic diagram of the original (not deformed under pressure) state. As shown in Figures 2, 3, 4A, and 4B, with reference to Figures 1A and 1B, this embodiment mainly disposes the flexible capillary structure 11 of the above embodiments in an elastically deformed heat dissipation unit 2. , the heat dissipation unit 2 is represented as a pressure-deformable vapor chamber in this embodiment, but is not limited to this. In specific implementation, the heat-dissipation unit 2 is a pressure-deformable hot plate. The heat dissipation unit 2 includes a heat dissipation body 20 and a flexible capillary structure 11, and the structure and function of the flexible capillary structure 11 in this embodiment are the same as the structure and function of the flexible capillary structure 11 in the first embodiment. Therefore, it will not be repeated again.
該散熱本體20具有一上板21、一腔室23、一與該上板21相蓋合的下板22、一蒸發部201及一冷凝部202，其中該上板21與下板22為一金屬材質或陶瓷其中任一所構成，該金屬材質為金、銀、銅、鐵、鋁、不銹鋼、鈦或合金，並該散熱本體20的蒸發部201與冷凝部202分別位於該下板22與上板21，該蒸發部201(即下板22)係與一發熱元件(如中央處理器、圖形處理器或南北橋晶片或其他發熱源；圖中未示)相貼設，並該發熱元件是接觸貼設在對應該柔性毛細結構11的毛細主體111的該蒸發部201外側上。該上板21設有一基部211及一可受壓彈性變形的側部212，前述帶有彈性的側部212係從該基部211一側向外延伸構成，用以可被軸向受壓或彈性恢復，且於本實施例的該側部212從該基部211外周側向外且往下方傾 斜延伸構成，該側部212的底端係與對應該下板22的一內側相貼設密合，使該散熱本體20的腔室23形成真空狀態。 The heat dissipation body 20 has an upper plate 21, a chamber 23, a lower plate 22 covering the upper plate 21, an evaporation part 201 and a condensation part 202, wherein the upper plate 21 and the lower plate 22 are one It is made of any metal material or ceramic, and the metal material is gold, silver, copper, iron, aluminum, stainless steel, titanium or alloy, and the evaporation part 201 and the condensation part 202 of the heat dissipation body 20 are respectively located on the lower plate 22 and On the upper plate 21, the evaporation part 201 (i.e., the lower plate 22) is attached to a heating element (such as a central processing unit, a graphics processor, a north-south bridge chip, or other heating sources; not shown in the figure), and the heating element It is attached in contact with the outer side of the evaporation part 201 of the capillary body 111 corresponding to the flexible capillary structure 11 . The upper plate 21 is provided with a base portion 211 and a side portion 212 that can be elastically deformed under pressure. The elastic side portion 212 extends outward from one side of the base portion 211 to be axially compressed or elastically deformed. Recovery, and in this embodiment, the side portion 212 is inclined outward and downward from the outer peripheral side of the base portion 211 The bottom end of the side portion 212 is in close contact with an inner side of the lower plate 22 to form a vacuum state in the cavity 23 of the heat dissipation body 20 .
該腔室23內填充有一工作流體(如純水或甲醇或冷媒)，且於本實施例位於該蒸發部201與冷凝部202的腔室23之內壁(即該上、下板21、22的內側面)是沒有設置毛細結構(如金屬燒結粉末體或編織網)。該柔性毛細結構11設於該腔室23內，該柔性毛細結構11的毛細主體111與該複數延伸部112其中一者接觸該上板21或下板22內側，於本實施例的毛細主體111的一頂側直接接觸連接該下板22內側，該複數延伸部112的自由端1123與該抵接部11231直接接觸該上板21的基部211內側，透過具有大接觸面的抵接部11231接觸該上板21內側可有效增加兩者接觸面積且進而增加毛細力及增加兩者接觸的穩固性。所以藉由該柔性毛細結構11的毛細主體111來作為該散熱本體20的蒸發部201內的毛細結構，使該蒸發部201內的該毛細主體111上的工作液體吸收到該發熱元件上的熱量而轉變成蒸發的工作液體(或汽態的工作液體)後，直到該冷凝部202上經冷凝後的工作液體(或液態的工作液體)則藉由該複數延伸部112與其上抵接部11231的毛細力將冷凝後的工作液體快速回流到下方的該蒸發部201內的毛細主體111上，且在冷凝部202上的些許部分的工作液體可以利用重力方式滴回流到該蒸發部201上，故藉由多重回流路徑供冷凝後的工作液體迅速回流，以有效避免蒸發部201乾燒及達到提升散熱循環的效果。此外，本發明藉由該上、下板21、22的內側面上沒有設置毛細結構可有效增加腔室內蒸氣空間，以有效提升汽液循環的效果。在一實施例，該柔性毛細結構11的毛細主體111的頂側直接接觸連接該上板21內側，該複數延伸部112的自由端1123直接連接接觸該下板22內側。 The chamber 23 is filled with a working fluid (such as pure water or methanol or refrigerant), and in this embodiment is located on the inner wall of the chamber 23 of the evaporation part 201 and the condensation part 202 (ie, the upper and lower plates 21 and 22 There is no capillary structure (such as metal sintered powder or braided mesh) on the inner side. The flexible capillary structure 11 is disposed in the chamber 23. The capillary body 111 of the flexible capillary structure 11 and one of the plurality of extending portions 112 contact the inside of the upper plate 21 or the lower plate 22. In this embodiment, the capillary body 111 A top side of the lower plate 22 is directly connected to the inner side of the lower plate 22. The free end 1123 of the plurality of extensions 112 and the abutment portion 11231 are in direct contact with the inner side of the base portion 211 of the upper plate 21 through the abutment portion 11231 with a large contact surface. The inner side of the upper plate 21 can effectively increase the contact area between the two, thereby increasing the capillary force and increasing the stability of the contact between the two. Therefore, the capillary body 111 of the flexible capillary structure 11 serves as the capillary structure in the evaporation part 201 of the heat dissipation body 20, so that the working liquid on the capillary body 111 in the evaporation part 201 absorbs the heat on the heating element. After being converted into evaporated working liquid (or vapor working liquid), the condensed working liquid (or liquid working liquid) on the condensation part 202 passes through the plurality of extension parts 112 and the upper contact part 11231 The capillary force will quickly return the condensed working liquid to the capillary body 111 in the evaporation part 201 below, and some part of the working liquid in the condensation part 202 can drip back to the evaporation part 201 by gravity. Therefore, multiple return paths are used to quickly return the condensed working liquid to effectively prevent the evaporation part 201 from dry burning and achieve the effect of improving the heat dissipation cycle. In addition, the present invention can effectively increase the vapor space in the chamber by not providing capillary structures on the inner surfaces of the upper and lower plates 21 and 22, thereby effectively improving the vapor-liquid circulation effect. In one embodiment, the top side of the capillary body 111 of the flexible capillary structure 11 is directly connected to the inside of the upper plate 21 , and the free ends 1123 of the plurality of extensions 112 are directly connected to the inside of the lower plate 22 .
當該散熱本體20的上板21的基部211外側表面受到一軸向外力(如向下外力)施力時，該上板21的基部211受到向下外力施力(如碰撞或與散熱器組接的緊密力)而於該腔室23內朝下板22方向向下位移，此時帶有彈性的側部212也會接收到該基部211傳來的軸向外力，使該側部212隨著該基部211於該腔室23內向下彈性變形位移，同時於該腔室23內的該複數延伸部112的自由端1123會接收到該基部211上傳來的向下外力，使該複數延伸部112的自由端1123與該抵接部11231因受壓彈性變形而由該基部211內側朝該側部212方向位移，且該複數延伸部112的自由端1123與該抵接部11231接觸該側部212內側，此時該散熱本體20從該軸向位移空間114的一第一高度H1下降至一第二高度H2而呈受壓變形狀態(如第4B圖)，待該上板21的基部211沒有受到軸向外力施力時，藉由該側部212的彈性回復力將該散熱本體20恢復到原先狀態(即該散熱本體20的上板21呈未被受壓變形狀態(如第4A圖)，且腔室23的該柔性毛細結構11則透過該複數延伸部112返回到未被受壓變形狀態(如第4A圖)，也就是該散熱本體20從該軸向位移空間114的該第二高度H2上升恢復至該第一高度H1。 When the outer surface of the base 211 of the upper plate 21 of the heat dissipation body 20 is subjected to an axial external force (such as a downward external force), the base 211 of the upper plate 21 is exerted a downward external force (such as a collision or contact with the radiator assembly). The elastic side part 212 will also receive the axial external force from the base part 211, so that the side part 212 will follow the direction of the lower plate 22. As the base 211 elastically deforms downward in the cavity 23, the free ends 1123 of the extensions 112 in the cavity 23 will receive a downward external force from the base 211, causing the extensions 112 to The free end 1123 of the extension part 112 and the contact part 11231 are elastically deformed under pressure and are displaced from the inside of the base part 211 toward the side part 212, and the free end 1123 of the plural extension part 112 and the contact part 11231 contact the side part. 212 inside, at this time, the heat dissipation body 20 drops from a first height H1 of the axial displacement space 114 to a second height H2 and is in a compressed deformation state (as shown in Figure 4B). When the base 211 of the upper plate 21 When no axial external force is applied, the elastic restoring force of the side portion 212 restores the heat dissipation body 20 to its original state (that is, the upper plate 21 of the heat dissipation body 20 is not compressed and deformed (as shown in Figure 4A ), and the flexible capillary structure 11 of the chamber 23 returns to the uncompressed deformation state through the plurality of extension parts 112 (as shown in FIG. 4A), that is, the heat dissipation body 20 moves from the third position of the axial displacement space 114. The second height H2 rises and returns to the first height H1.
在一替代實施例，該柔性毛細結構11的毛細主體111的周側具有一水平延伸毛細部(圖中未示)，該水平延伸毛細部從該毛細主體111相鄰該固定端1121的周側向外水平延伸至該蒸發部201內側(即下板22內側)上，透過該毛細主體111與該水平延伸毛細部佔滿整個該腔室23的蒸發部201內側，以藉由該水平延伸毛細部的毛細力能將冷凝後的工作液體快速回流到蒸發部201上。 In an alternative embodiment, the flexible capillary structure 11 has a horizontally extending capillary portion (not shown) on the circumferential side of the capillary body 111 adjacent to the fixed end 1121 . Extend horizontally outward to the inside of the evaporation part 201 (ie, the inside of the lower plate 22), and occupy the entire inside of the evaporation part 201 of the chamber 23 through the capillary body 111 and the horizontally extending capillary part, so that through the horizontally extending capillary part The capillary force of the evaporation part 201 can quickly return the condensed working liquid to the evaporation part 201.
在另一替代實施例，該腔室23內設有一毛細結構24，該毛細結構24為一金屬燒結粉末體、編織網、纖維體、溝槽或前述任一複數組合，且該毛細結構24設於該腔室23的該上板21內側或該下板22內側上或該上、下板21、22內側(即佈置 整個腔室23內側)上，該毛細結構24接觸連接該複數延伸部112或該毛細主體111，例如該毛細結構24設於該腔室23的該上板21內側，且該複數延伸部112的自由端1123與其上該抵接部11231接觸連接該上板21的該毛細結構24，或是該毛細結構24設於該腔室23的該上、下板21、22內側(如參閱第4C圖)，該毛細主體111的頂側直接接觸連接該下板22的該毛細結構24，以及該複數延伸部112的自由端1123與其上該抵接部11231直接接觸連接該上板21的該毛細結構24，以有效供冷凝後的工作液體迅速回流，使得能避免蒸發部201乾燒及達到快速散熱循環的效果。 In another alternative embodiment, the chamber 23 is provided with a capillary structure 24, the capillary structure 24 is a metal sintered powder body, a braided mesh, a fiber body, a groove, or any plural combination of the foregoing, and the capillary structure 24 is provided with Inside the upper plate 21 or the lower plate 22 of the chamber 23 or the upper and lower plates 21 and 22 (that is, arranged (the entire inside of the chamber 23), the capillary structure 24 is in contact with the plurality of extension portions 112 or the capillary body 111. For example, the capillary structure 24 is provided inside the upper plate 21 of the chamber 23, and the plurality of extension portions 112 are The free end 1123 and the contact portion 11231 are in contact with the capillary structure 24 of the upper plate 21 , or the capillary structure 24 is provided inside the upper and lower plates 21 and 22 of the chamber 23 (see Figure 4C ), the top side of the capillary body 111 is in direct contact with the capillary structure 24 connected to the lower plate 22, and the free end 1123 of the plurality of extensions 112 and the abutment portion 11231 thereon are in direct contact with the capillary structure connected to the upper plate 21 24, to effectively provide the condensed working liquid with rapid return flow, so as to avoid dry burning of the evaporation part 201 and achieve the effect of rapid heat dissipation cycle.
在另一替代實施例，參閱5A、5B圖，該散熱單元2更包含另一柔性毛細結構13，該另一柔性毛細結構13與該柔性毛細結構11呈相互或交錯或對應或間隔設置，且該另一柔性毛細結構13的結構(包含另一毛細主體131，及複數另一延伸部132具有的固定端1321、自由端1323和抵接部13231)、外觀形狀及功效與前述柔性毛細結構11的結構(即包含有毛細主體111與延伸部132)、外觀形狀及功效相同，在此不重新贅述，主要是該另一毛細主體131接觸該冷凝部內側(即上板21內側)，該複數另一延伸部132接觸該蒸發部201內側(即下板22內側)，且該另一柔性毛細結構13與該柔性毛細結構11共同界定並使用該軸向位移空間114，所以透過兩柔性毛細結構11、13來作為該散熱本體20的蒸發部201與冷凝部202內的毛細結構，讓冷凝後的工作液體能迅速回流，以有效達到提升散熱循環的效果。 In another alternative embodiment, referring to Figures 5A and 5B, the heat dissipation unit 2 further includes another flexible capillary structure 13. The other flexible capillary structure 13 and the flexible capillary structure 11 are arranged in a staggered, corresponding or spaced manner, and The structure, appearance, shape and function of the other flexible capillary structure 13 (including the other capillary body 131 and the fixed end 1321, the free end 1323 and the contact portion 13231 of the plurality of other extension parts 132) are the same as those of the aforementioned flexible capillary structure 11 The structure (that is, including the capillary body 111 and the extension part 132), the appearance shape and the function are the same, which will not be repeated here. The main thing is that the other capillary body 131 contacts the inside of the condensation part (that is, the inside of the upper plate 21), and the plurality of The other extension 132 contacts the inside of the evaporation part 201 (ie, the inside of the lower plate 22), and the other flexible wick structure 13 and the flexible wick structure 11 jointly define and use the axial displacement space 114, so through the two flexible wick structures 11 and 13 serve as capillary structures in the evaporation part 201 and the condensation part 202 of the heat dissipation body 20 so that the condensed working liquid can quickly flow back to effectively improve the heat dissipation cycle.
在另一替代實施例，參閱第6A、6B、6C圖，該具彈性變形的散熱單元2更包含一彈性支撐件25，該彈性支撐件25設於該軸向位移空間114內，用以支撐該柔性毛細結構11與該基部211，且該彈性支撐件25設有一支撐頂部251與一支撐底部252，該支撐頂部251與面對該基部211內側相貼設接觸，該支撐底部252抵接在該 毛細主體111的底側上，透過該彈性支撐件25可增加該散熱本體20的結構彈性度及緩衝的效果，且還可藉由該彈性支撐件25的彈性回復力輔助該柔性毛細結構11與該上板21的基部211向上位移而快速恢復到原先狀態(即該散熱本體20的上板21與該柔性毛細結構11皆呈未被受壓變形狀態，如第6B圖)。 In another alternative embodiment, referring to Figures 6A, 6B, and 6C, the elastically deformable heat dissipation unit 2 further includes an elastic support member 25 disposed in the axial displacement space 114 for supporting The flexible capillary structure 11 and the base 211, and the elastic support member 25 is provided with a support top 251 and a support bottom 252. The support top 251 is in contact with the inner side facing the base 211, and the support bottom 252 is in contact with the On the bottom side of the capillary body 111, the elastic support member 25 can increase the structural elasticity and buffering effect of the heat dissipation body 20, and the elastic restoring force of the elastic support member 25 can also assist the flexible capillary structure 11 and The base 211 of the upper plate 21 is displaced upward and quickly returns to its original state (that is, both the upper plate 21 of the heat dissipation body 20 and the flexible capillary structure 11 are not compressed and deformed, as shown in Figure 6B).
因此，透過本發明此具彈性變形的散熱單元2內設有柔性毛細結構11的設計，使得可達到兼具有可受壓變形及毛細力的功能，且還有效達到增加該散熱本體20整體的結構彈性度的效果外，該散熱單元2於組裝時只要在第一、二高度H1、H2之間的高度差範圍內都可使用，以能應付多種需求。此外，該散熱單元2可適用於一電子裝置(如智慧型手機或電腦)、伺服器或通訊設備或工業設備上，且在該散熱單元2的上板21之基部211與一具有複數鰭片的散熱器組裝時，會透過一扣具(圖中未示)扣設在該散熱器(圖中未示)上，以對該散熱器上施一向下緊密力，此時該散熱單元2透過該基部211會接收前述向下緊密力而於該腔室23內向下受壓位移，及該側部212也會接收到該基部211上傳來的前向下緊密力而於該腔室23內向下彈性變形位移，直到該扣具固定在散熱器上後，使該散熱器的底面與該散熱單元2的上板21之基部211外側表面相緊密平貼設，故使得本發明該具彈性變形的散熱單元2可達到承壓、抗壓的效果。 Therefore, through the design of the flexible capillary structure 11 inside the elastically deformable heat dissipation unit 2 of the present invention, it is possible to achieve both the functions of pressure deformation and capillary force, and also effectively increases the overall strength of the heat dissipation body 20 In addition to the effect of structural flexibility, the heat dissipation unit 2 can be used within the height difference range between the first and second heights H1 and H2 during assembly, so as to meet various needs. In addition, the heat dissipation unit 2 can be applied to an electronic device (such as a smart phone or computer), a server or a communication equipment or an industrial equipment, and the base 211 of the upper plate 21 of the heat dissipation unit 2 and a heat dissipation unit 2 have a plurality of fins. When the radiator is assembled, a buckle (not shown in the figure) will be fastened to the radiator (not shown in the figure) to exert a downward tightening force on the radiator. At this time, the heat dissipation unit 2 passes through The base portion 211 will receive the aforementioned downward tightening force and move downward under pressure in the chamber 23 , and the side portion 212 will also receive the forward and downward tightening force from the base portion 211 and move downward in the chamber 23 . The elastic deformation displaces until the buckle is fixed on the radiator, so that the bottom surface of the radiator is in close contact with the outer surface of the base 211 of the upper plate 21 of the heat dissipation unit 2. Therefore, the elastically deformable elastic deformation device of the present invention is The heat dissipation unit 2 can achieve the effects of pressure bearing and pressure resistance.
請參閱第7圖係本發明之第三實施例之散熱單元之分解立體示意圖；第8圖係本發明之第三實施例之散熱單元之剖面示意圖，並輔以參閱第1、2圖。該本實施例的散熱單元2(包含散熱本體20與柔性毛細結構11)的結構、連結關係、未受壓變形(或受壓變形)狀態及其功效大致與前述第二實施例的具彈性變形的散熱單元2(包含散熱本體20與柔性毛細結構11)的結構、連結關係、未受壓變形(或受壓變形)狀態及其功效相同，在此不重新贅述。該本實施例主要是將前述第二實 施例的圖2中該柔性毛細結構11設置方向改變為如圖7中該柔性毛細結構11的毛細主體111接觸該冷凝部202內側(即上板21內側)，該複數延伸部112接觸該蒸發部201內側(即下板22內側)的毛細結構24。所以透過該毛細主體111和該複數延伸部112與其上水平延伸的抵接部11231的毛細力將冷凝後的工作液體快速回流到下方的該蒸發部201內的毛細結構24上，一直不斷汽液循環散熱。 Please refer to Figure 7, which is an exploded perspective view of the heat dissipation unit according to the third embodiment of the present invention; Figure 8, which is a cross-sectional schematic view of the heat dissipation unit according to the third embodiment of the present invention, is supplemented by referring to Figures 1 and 2. The structure, connection relationship, uncompressed deformation (or compressive deformation) state and function of the heat dissipation unit 2 (including the heat dissipation body 20 and the flexible capillary structure 11) of this embodiment are basically the same as those of the elastically deformed heat dissipation unit 2 of the second embodiment. The heat dissipation unit 2 (including the heat dissipation body 20 and the flexible capillary structure 11) has the same structure, connection relationship, non-pressure deformation (or pressure deformation) state and its functions, and will not be repeated here. This embodiment mainly combines the aforementioned second implementation In Figure 2 of the embodiment, the arrangement direction of the flexible capillary structure 11 is changed so that as shown in Figure 7, the capillary body 111 of the flexible capillary structure 11 contacts the inside of the condensation part 202 (ie, the inside of the upper plate 21), and the plurality of extension parts 112 contacts the evaporation part. The capillary structure 24 inside the part 201 (that is, the inside of the lower plate 22). Therefore, the condensed working liquid quickly flows back to the capillary structure 24 in the evaporation part 201 below through the capillary force of the capillary main body 111 and the plurality of extension parts 112 and the horizontally extending abutment part 11231, and the vapor and liquid are continuously separated. Circulation heat dissipation.
因此，透過本發明此具彈性變形的散熱單元2內設有柔性毛細結構11的設計，使得可達到兼具有可受壓變形及毛細力的功能，且還有效達到增加該散熱本體20整體的結構彈性度的效果。 Therefore, through the design of the flexible capillary structure 11 inside the elastically deformable heat dissipation unit 2 of the present invention, it is possible to achieve both the functions of pressure deformation and capillary force, and also effectively increases the overall strength of the heat dissipation body 20 The effect of structural elasticity.
11:柔性毛細結構 11: Flexible capillary structure
111:毛細主體 111: Capillary body
112:延伸部 112:Extension
1123:自由端 1123: Free end
11231:抵接部 11231:Butt part
2:散熱單元 2: Cooling unit
20:散熱本體 20: Cooling body
201:蒸發部 201: Evaporation department
202:冷凝部 202:Condensation part
21:上板 21:On the board
211:基部 211:Base
212:側部 212: Side
22:下板 22: Lower board
Claims (13)
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