,1284728 九、發明說明： •【發明所屬之技術領域】 •本發明係關於-種熱傳導裝置，尤其係一種敎总 【先前技術】 熱管具有超靜音、快速傳熱、高熱傳導率、重 尺寸小、無可動件、結構簡單及多用途等特性，且熱: 在溫度幾乎保持不變的狀況下扮演快速傳輸大量熱能二 籲導體角色而被廣泛的應用；其基本構造係在密閉管材= 襯以易吸收作動流體的毛細結構層，而其中央的空 空洞狀態，並在抽真空的密閉管材内注入相當於毛細結構 層孔隙總容積的作動流體，依吸收與散出熱量的相關^置 :分為蒸發段、冷凝段以及其間的絕熱段；其工作原理是 糟由工作流體之液、汽兩相變化的潛熱來傳遞熱量：包2 在蒸發段藉蒸發潛熱自熱源帶走大量熱量，使工作流體蒸 驗發並使蒸汽快速通過管内空間，到達冷凝段冷卻凝結成液 體且釋放出熱能，上述工作液體則藉由貼於管内壁的毛細 結構層所提供的毛細力回流至蒸發段，達到持續相變化的 熱能循環來傳輸熱量。 唯習知熱管技術仍有許多待克服的缺點，包括·· (1)蒸汽與回流液體於同一管中以相反方向流動，阻 礙液體藉毛細力的回流，進而發生乾化導致急速升溫，限 制其最大散熱能力。 (2 )冷凝段中凝結液體回流通道係利用與蒸發段相同 .1284728 的毛細結構，雖然毛細力隨其中的孔隙直徑減少而增加， ，但流體的磨擦阻力亦隨之增加，不利於工作液體的回流而 ，易發生乾化，限制其最大散熱能力。 (3 )採用燒結金屬粉末、金屬網、金屬絲或微小溝槽 的熱管毛細結構不易在量產製程中獲得一致性的結構特性 與品質，因此無法有效控制主導傳熱性能的孔隙率，造成 熱管產品在傳熱性能的變異性增加。 • (4)採用燒結金屬粉末、金屬網、金屬絲或微小溝槽 的，管毛細結構其孔隙率偈限於一小範圍，難以作大幅^ 的&升’使熱阻值偏高且使最大散熱能力受限。 為避免上述第（1) (2)項缺點，乃有迴路式熱管（1〇〇p — pipe)的開發，其構成包括—具有毛細結構的蒸發部、 =汽、液分流的蒸汽導管及回流導管、以及設於上述兩導 B之間使蒸 >飞冷凝成液體的冷凝部。其工作原理亦是藉由 工作流體之液、汽兩相變化的潛熱來傳遞熱量，卫作流體 的作動亦王罪内部毛細結構提供的毛細力，但優於傳統熱 管之處主要在於工作流體之液、汽兩相分別以不同的流道 進出蒸發部，使兩相的流動不互相干擾而將熱量傳至冷凝 部散出，且蒸發部與冷凝部可以採用不同的結構作適當的 搭配；唯在實務上仍無法解決第（3) (4)項缺點。 因此，業界需要綜合傳統熱管與迴路式熱管的優點並 有效克服上述習知技術的缺點，提出一種熱管，其具有傳 統熱管外形及具有汽、液分流的迴路式熱管優點，以及在 1284728 製程中可有效控制孔隙率的大小，並使孔隙率大幅提昇的 .蜂巢式熱管，達到方便應用、大幅降低熱阻、及提昇熱管 最大散熱能力的功效。 【發明内容】 有鐘於此，有必要提供一種可有效控制其毛細結構一 致性及孔隙率之具有高效熱導性能的熱管。 一種熱管，包括··一管狀殼體，其内具有一密封腔室； 適里工作流體，其封入於該密封腔室内；及至少一毛細结 構層，設置於該密封腔室内，該毛細結構層包括至少一橫 截面呈波浪狀的薄片，該薄片對應管狀殼體兩端的部位分 別設有複數透孔，從而形成蜂巢狀毛細結構。 所述熱管與習知技術相比具有如下優點：由於該熱管 毛細結構係由金屬薄片形成並呈蜂巢狀，在量產製程中對 毛細結構的一致性可實現有效的控制，並且通過金屬薄片 的結構可有效控制毛細結構的孔隙率，有利於提昇熱管性 月b及品質穩定性〇 【實施方式】 以下參閱圖1至圖5就本發明之較佳實施例詳加說明， 俾利完全瞭解。 圖1為本發明熱管一實施例之縱向截面示意圖；圖2(a) 為圖1中熱管A-A截面的放大圖，圖2⑴為圖i中敎管bb 截面的放大圖；圖3(a)及圖3⑴分別為第一薄片及第 二薄片的結構示意圖。該熱管包括一密封腔體1〇、腔體ι〇 1284728 内設置的毛細結構20、腔體10内封入的適量工作流體（圖 _未示）。其中，該密封腔體10由内壁為平滑的金屬管狀殼 '體或内壁有微小溝槽的管狀殼體構成。 ' 本實施例中之熱管還可以包括一汽液隔離層30，其係 由金屬薄片或薄管構成，主要設置於對應熱管絕熱段50的 毛細結構20表面，使該部位的毛細結構20界面與蒸汽流道 70隔絕，以便解決習知技術的蒸汽與回流液體於共同連通 I 介面的通道中以相反方向流動，阻礙液體藉毛細力的回 流，進而發生乾化導致急速升溫。該汽液隔離層30亦可以 分別向熱管蒸發段40及冷凝段60方向適當延伸設置。 該毛細結構20包括貼設於腔體10内壁之三角型波浪狀 第一薄片210及該第一薄片210内側（本實施例中由熱管内 壁面至熱管中心軸線的方向稱為内方向，反則稱為外方向） 貼設的平板狀第二薄片220。 如圖3(a)及圖3(b)所示，該第一薄片210及該第二 • 薄片220上分別設有複數透孔212及222，從而該第一薄片 210與第二薄片220組合形成供冷凝液回流的多微流通道蜂 巢式毛細結構層，而沿熱管中心轴線形成供蒸汽流動的空 洞蒸汽通道。如圖2所示，本發明的毛細結構20可以在熱管 内方向上緊疊置形成兩層或兩層以上的毛細結構層，本實 施例中的毛細結構20為多層毛細結構為例。 可以理解地，本實施例中的多層毛細結構20藉由多數 波浪狀第一薄片210疊置而成，其中相鄰第一薄片210的波 1284728 請參閱圖5，本發明熱管的毛細結構的第一薄片23〇上 -的透孔邊緣設有向一侧翻出的折邊而形成凸孔232。 .f述各實施例中皆以圓管為例進行說明，然而本發明 的熱管亦可以根據需求經彎折或打扁過程形成U型、s型等 各種形狀並蒸發段為扁平狀或整體皆為爲平狀的熱管。由 於本發明熱管毛細結構由薄片片大金屬整體方式緊疊置構 成，其強度高，在上述弯折或打扁過程中受損度相對習知 φ技術小，最終獲得的熱管與原圓管型熱管相比依然 較好性能。 —本發明蜂巢式熱管的製造方法之—係首先將—定長度 的汽液隔離層套設於芯棒外並予峰向定位，再將蜂= 細結構㈣於其外，然後將其由—端插人熱管殼體内，並 以經過縮口及縮管的蒸發段尾端予以同以位；繼之，將 上^插入熱^殼體内的芯棒組合件送人高溫爐中使蜂巢毛, 1284728 IX, invention description: • [Technical field to which the invention belongs] • The present invention relates to a kind of heat conduction device, in particular to a 敎 total [Prior Art] The heat pipe has ultra-quiet, fast heat transfer, high thermal conductivity, small size and small size , no moving parts, simple structure and multi-purpose characteristics, and heat: It is widely used in the role of fast transmission of a large amount of thermal energy in the condition of almost constant temperature; its basic structure is in closed pipe = lining It is easy to absorb the capillary structure layer of the actuating fluid, and in the central hollow state, and injecting the actuating fluid corresponding to the total volume of the pores of the capillary structure layer in the vacuum-tight closed pipe, according to the correlation between absorption and heat dissipation: The evaporation section, the condensation section and the adiabatic section therebetween; the working principle is that the latent heat of the liquid and vapor phases of the working fluid transfers heat: the package 2 takes a large amount of heat from the heat source by the latent heat of evaporation in the evaporation section, so that the work The fluid is vaporized and the steam is quickly passed through the inner space of the tube, and reaches the condensation section to cool and condense into a liquid and release the heat energy. Affixed to the capillary forces of wick layer provided to the inner wall reflux to evaporator section, a phase change thermal energy to achieve continuous circulation transports heat. There are still many shortcomings to be overcome, including: (1) steam and reflux liquid flow in the opposite direction in the same tube, hindering the backflow of liquid by capillary force, and then drying causes rapid heating, limiting it Maximum heat dissipation. (2) The condensed liquid return channel in the condensation section utilizes the capillary structure of the same as the evaporation section. 1284728, although the capillary force increases with the decrease of the pore diameter therein, the frictional resistance of the fluid also increases, which is not conducive to the working liquid. When it is reflowed, it is easy to dry and limit its maximum heat dissipation capacity. (3) The heat pipe capillary structure using sintered metal powder, metal mesh, wire or micro groove is not easy to obtain consistent structural characteristics and quality in the mass production process, so the porosity of the leading heat transfer performance cannot be effectively controlled, resulting in a heat pipe The variability in heat transfer performance of the product increases. • (4) Using sintered metal powder, metal mesh, wire or micro-trench, the capillary structure of the capillary structure is limited to a small range, and it is difficult to make a large thermal resistance value and make it maximum. Limited heat dissipation. In order to avoid the above shortcomings of (1) and (2), there is a development of a loop heat pipe (1〇〇p—pipe), which consists of an evaporation section with a capillary structure, a steam conduit with a steam and liquid split, and a return flow. The conduit and the condensation portion provided between the two guides B to condense the vapor into a liquid. The working principle is also to transfer heat by the latent heat of liquid and vapor changes of the working fluid. The action of the fluid is also the capillary force provided by the internal capillary structure, but the advantage of the traditional heat pipe is mainly the working fluid. The liquid and vapor phases enter and exit the evaporation portion with different flow channels, so that the flow of the two phases does not interfere with each other, and the heat is transmitted to the condensation portion, and the evaporation portion and the condensation portion can be appropriately matched with different structures; In practice, the shortcomings of sub-paragraphs (3) and (4) cannot be resolved. Therefore, the industry needs to combine the advantages of conventional heat pipe and loop heat pipe and effectively overcome the shortcomings of the above-mentioned prior art, and proposes a heat pipe which has the advantages of a conventional heat pipe shape and a loop heat pipe with steam and liquid splitting, and can be processed in the 1284728 process. Effectively control the porosity and make the porosity greatly increase. The honeycomb heat pipe can achieve convenient application, greatly reduce the thermal resistance, and improve the heat dissipation capacity of the heat pipe. SUMMARY OF THE INVENTION In view of this, it is necessary to provide a heat pipe having high heat conductivity which can effectively control the capillary structure uniformity and porosity. A heat pipe comprising: a tubular casing having a sealed chamber therein; a working fluid filled in the sealed chamber; and at least one capillary structure disposed in the sealed chamber, the capillary structure layer The invention comprises at least one wavy sheet having a cross section, and the sheet is respectively provided with a plurality of through holes corresponding to the ends of the tubular casing to form a honeycomb-like capillary structure. Compared with the prior art, the heat pipe has the following advantages: since the heat pipe capillary structure is formed of a metal foil and is honeycomb-shaped, the consistency of the capillary structure can be effectively controlled in the mass production process, and the metal foil is passed through the metal foil. The structure can effectively control the porosity of the capillary structure, and is beneficial to improve the heat pipe performance b and the quality stability. [Embodiment] Hereinafter, the preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5, and the profit is fully understood. 1 is a longitudinal cross-sectional view of an embodiment of a heat pipe of the present invention; FIG. 2(a) is an enlarged view of a cross section of the heat pipe AA of FIG. 1, and FIG. 2(1) is an enlarged view of a cross section of the bb tube of FIG. Fig. 3 (1) is a schematic structural view of the first sheet and the second sheet, respectively. The heat pipe comprises a sealed cavity 1 , a capillary structure 20 disposed in the cavity ι〇 1284728, and an appropriate amount of working fluid enclosed in the cavity 10 (not shown). The sealed cavity 10 is composed of a tubular housing having a smooth inner metal tubular shell or an inner wall having minute grooves. The heat pipe in this embodiment may further include a vapor-liquid barrier layer 30, which is composed of a metal foil or a thin tube, and is mainly disposed on the surface of the capillary structure 20 corresponding to the heat pipe section 50, so that the capillary structure 20 interface and steam of the portion are The flow path 70 is isolated so as to solve the problem that the steam and the return liquid of the prior art flow in opposite directions in the passage communicating with the I interface, hindering the backflow of the liquid by the capillary force, and the drying causes the rapid temperature rise. The vapor-liquid barrier layer 30 may also be appropriately extended in the direction of the heat pipe evaporation section 40 and the condensation section 60, respectively. The capillary structure 20 includes a triangular-shaped wavy first sheet 210 attached to the inner wall of the cavity 10 and the inside of the first sheet 210 (in the present embodiment, the direction from the inner wall surface of the heat pipe to the central axis of the heat pipe is referred to as the inner direction, and the reverse direction is called The flat second sheet 220 is attached to the outer direction. As shown in FIG. 3(a) and FIG. 3(b), the first sheet 210 and the second sheet 220 are respectively provided with a plurality of through holes 212 and 222, so that the first sheet 210 and the second sheet 220 are combined. A multi-micro flow channel honeycomb structure layer for refluxing the condensate is formed, and a hollow steam channel for steam flow is formed along the central axis of the heat pipe. As shown in Fig. 2, the capillary structure 20 of the present invention may be formed by laminating two or more layers of the capillary structure layer in the direction of the heat pipe. The capillary structure 20 in the present embodiment is a multilayer capillary structure. It can be understood that the multi-layered capillary structure 20 in this embodiment is formed by stacking a plurality of wavy first sheets 210, wherein the waves of the first first sheet 210 are 1284728. Referring to FIG. 5, the capillary structure of the heat pipe of the present invention is The edge of the through hole of a sheet 23 is provided with a flange which is turned out to one side to form a convex hole 232. In the various embodiments, the circular tube is taken as an example for illustration. However, the heat pipe of the present invention can also be formed into various shapes such as U-shaped and s-shaped shapes by bending or flattening according to requirements, and the evaporation section is flat or overall. It is a flat heat pipe. Since the capillary structure of the heat pipe of the present invention is composed of a large piece of large metal sheet, the strength thereof is high, and the damage is relatively small in the process of bending or flattening, and the heat pipe and the original round pipe type are finally obtained. The heat pipe is still better than the heat pipe. - The method for manufacturing the honeycomb heat pipe of the present invention - firstly, a vapor-liquid isolating layer of a predetermined length is sleeved outside the mandrel and positioned in a peak direction, and then the bee = fine structure (4) is outside, and then the The end is inserted into the heat pipe casing, and is disposed in the same position as the end of the evaporation section through the shrinkage and shrinkage pipe; then, the mandrel assembly inserted into the heat casing is sent to the high temperature furnace to make the honeycomb hair
細、U冓、熱管殼體及汽液隔離層燒結成為一體，然後 芯棒並將底部熔焊密封· f接， …、 出 端充入適量的工作流體並抽真空發㊁尾 管切斷、溶焊封口等製程而完成一蜂巢式= ==細結構的孔隙枝主導熱管傳熱性 數，由於本發明蜂巢式熱管結構係藉由複數 實堆疊成形，其呈蜂巢狀排列的多微 毛;=緊 成:孔隙率大小可藉選用成型薄片的不同形== 程:獲得精確的控制，達到有效克服目前習知心= 程技術不易獲得—致性好的結構特性與—致㈣傳品2 1284728 變異性及大幅 ，點，進而大幅縮小熱管產品在傳熱性能的 提升熱管產品的良率。 “另1照熱管最大熱傳量的理論計算，直徑6咖的熱 二母升=1%的孔隙率可使最大熱傳量增加約娜，以目前 ，知的里產技術所生產的熱管毛細結構：例如粉末燒結 2絲網式、溝槽式、以及將上述單—毛細結構組合的複 （hybrid)毛細結構，其孔隙率很難超過4〇%，但本發Fine, U冓, heat pipe shell and vapor-liquid barrier layer are sintered into one body, then the core rod is welded and sealed to the bottom, f, ..., the outlet is filled with an appropriate amount of working fluid and the vacuum tube is cut off, Solvent welding and other processes to complete a honeycomb type = = = fine structure of the pore branch dominates the heat pipe heat transfer number, because the honeycomb heat pipe structure of the present invention is formed by a plurality of solid stacked, which is a honeycomb-like arrangement of micro-hairs; = Tightening: The porosity can be selected by different shapes of the formed sheet == Cheng: Obtain precise control to effectively overcome the current well-known heart = Cheng technology is not easy to obtain - good structural characteristics and - (4) Chuanpin 2 1284728 The variability and the sharpness of the point, and thus the heat pipe products in the heat transfer performance of the heat pipe products are greatly reduced. "The other one is based on the theoretical calculation of the maximum heat transfer capacity of the heat pipe. The porosity of the heat of the two coffees of the diameter of 6 coffee = 1% increases the maximum heat transfer amount of the heat. At present, the heat pipe produced by the knowing technology is Structure: for example, powder sintering 2 wire mesh type, groove type, and composite capillary structure combining the above-mentioned single-capillary structure, the porosity is difficult to exceed 4%, but the hair
明蜂巢式熱官的毛細結構不但易於製造，且可很容易將孔 隙率大幅提昇並超祕％以上，達到降低熱阻及提昇最大散 熱能力的功棘。 又，本發明藉由複數金屬薄片成形且緊實堆疊的蜂巢 狀毛細結構的排列’以及在成形薄片上的複數細孔，使蜂 巢狀毛細結構中回流的冷凝液互通，毛細結構中毛細孔之 間難有堵塞情況’達到進—步提昇孔隙率及降低流體摩擦 阻力及熱阻的功效。 再，原本在傳統熱管的毛細界面呈反向流動而彼此干 擾且相互牽制的蒸汽流與回流冷凝液，造成熱管的最大散 熱能f受到限制；由於本發明蜂巢式熱管的毛細結構中已 包含汽液隔離層，使狀況轉變為在同—熱管中的蒸汽流通 過該汽液隔離層内的流道’以及與之完全隔離的回流冷凝 液則通過蜂巢狀毛細結構，因此本發明已將汽、液流道分 離的迴路式熱管優異特性融入傳統式熱管中，達到進一步 降低熱阻及大幅提昇熱管最大散熱能力的功效。 12 1284728 综上所述，本發明確已符合發明專利之要件，遂依法 、提出專利申請。惟，以上所述者僅為本發明之較佳實施例， ，自不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝 ' 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明熱管之一實施例縱向剖面示意圖。 • 圖2 (a)係圖1中A-A截面放大圖，圖2 (b)係圖1 中B-B截面放大圖。 圖3 ( a )係圖2中之第一薄片的結構示意圖。 圖3 ( b )係圖2中之第二薄片的結構示意圖。 圖3 (c)係本發明熱管毛細結構之第一薄片的另一結 構示意圖。 圖3 (d)係本發明熱管毛細結構之第二薄片的另一結 | 構示意圖。 圖4 (a)係本發明熱管毛細結構之第一薄片的再一結 構右視圖。 … 圖4 (b)係本發明熱管毛細結構之第一薄片的又一結 構右視圖。 ，圖5係本發明熱管毛細結構之第_薄片的再另一結構 右視圖。 【主要元件符號說明】 岔封腔體10 毛細結構20 13The capillary structure of the honeycomb honeycomb is not only easy to manufacture, but also can easily increase the porosity and increase the porosity by more than %, achieving the power to reduce the thermal resistance and increase the maximum heat dissipation. Moreover, the present invention allows the condensate flowing back in the honeycomb-like capillary structure to communicate with each other by the arrangement of the plurality of metal foils and the tightly stacked arrangement of the honeycomb-like capillary structures and the plurality of fine pores on the formed sheet, and the capillary pores in the capillary structure It is difficult to have a blockage situation' to achieve the effect of increasing the porosity and reducing the frictional resistance and thermal resistance of the fluid. Moreover, the steam flow and the reflux condensate which originally flow in the reverse flow of the conventional heat pipe and interfere with each other and are mutually restrained, the maximum heat dissipation energy f of the heat pipe is limited; since the capillary structure of the honeycomb heat pipe of the present invention already contains steam The liquid separation layer converts the condition into a flow passage in the same heat pipe through the flow passage in the vapor-liquid insulation layer and a reflux condensate completely isolated therefrom passes through the honeycomb-like capillary structure, so the present invention has The excellent characteristics of the circuit-type heat pipe for liquid channel separation are integrated into the traditional heat pipe to further reduce the thermal resistance and greatly improve the heat dissipation capacity of the heat pipe. 12 1284728 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art of the present invention in light of the spirit of the present invention are intended to be included in the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal cross-sectional view showing an embodiment of a heat pipe of the present invention. • Figure 2 (a) is an enlarged view of the A-A section in Figure 1, and Figure 2 (b) is an enlarged view of the B-B section in Figure 1. Figure 3 (a) is a schematic view showing the structure of the first sheet in Figure 2. Figure 3 (b) is a schematic view showing the structure of the second sheet in Figure 2. Fig. 3 (c) is a schematic view showing another structure of the first sheet of the heat pipe capillary structure of the present invention. Fig. 3 (d) is a schematic view showing another structure of the second sheet of the heat pipe capillary structure of the present invention. Fig. 4 (a) is a right side elevational view showing still another structure of the first sheet of the heat pipe capillary structure of the present invention. Fig. 4 (b) is a right side elevational view showing still another structure of the first sheet of the heat pipe capillary structure of the present invention. Fig. 5 is a right side elevational view showing still another structure of the first sheet of the heat pipe capillary structure of the present invention. [Main component symbol description] 岔 sealing cavity 10 capillary structure 20 13