1260387 九、發明說明： 【發明所屬之技術領域】 種用於傳遞熱量的燒結式熱管 本發明涉及散熱領域，特別係關於一 及其製造方法。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of heat dissipation, and more particularly to a method of manufacturing the same. [Prior Art]
#隨著大型積«路技術之不斷進步及廣泛顧，資訊產業之發展 突飛猛進，高頻高ϋ處職销料。咏高躺賴行使得處理哭 早位時間產生大量歸，如从時排輯些熱魏引起處理器自身溫 度之升^對紐之安全及性能造歧大影響，目前散熱問題已經成 為新一代南速處理器推出時必需解決之問題。 由於對散熱需求不斷提高，新式散熱裝置不斷出現。將熱管應用 於電子元件散熱就是其中-種，其係_液體在氣、液兩態間轉變時 ，度保持不變而可吸«放出大量歸之顧工作，—改傳統散熱器 ，純以金賴傳導方式散熱而效率有限之狀況。熱管係於—賴低壓 管形殼體喊裝適量汽化熱高、流紐好、化學性質穩定、義較低 之液怨物質’如水、乙醇、丙g轉，彻該液態物質受熱和冷卻而在 氣、液兩態間轉變時，吸收或放出大量熱量而使熱量由管體_端迅速 傳到另一端。 為便於冷凝後的液體回流，熱管内壁面上一般設置有多孔毛細結 構，藉由該多孔毛細結構產生毛細作用力驅動冷凝後之液體回流，習 知熱管的多孔毛細結構一般採用單一均勻孔隙的多孔構造，如單一燒 結式金屬粉末構造。由於毛細作用力與多孔毛細結構孔隙大小成反 比，即孔隙之直徑越小毛細作用力越大，因此為達到較大之毛細作用 力而便於液體回流，所使用之多孔材料孔隙之孔徑越小越好。然，由 於流體在流動過程中通過流道之孔徑越小，流體所受之摩擦阻力及黏 滞力也越大’因此使得液體回流之阻力亦隨之增加、流速變小。當熱 1260387 官吸收熱量之端部吸收熱量增加時，蒸發加快，而液體由於回流阻力 而^度減小，無法迅賴充吸熱端之»雜，容肖造成乾燒，損壞 熱:。因此熱官多孔毛細結構之孔隙大小及孔隙分佈錢影響熱管之 11'故希望錢供具錢化孔隙之多孔毛細結構，利用孔隙變化提 【發明内容】#With the continuous improvement and extensive consideration of the large-scale product technology, the development of the information industry has advanced by leaps and bounds, and high-frequency sorghum has been used for sales.咏 躺 躺 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得 使得The problem that must be solved when the speed processor is introduced. As heat demand continues to increase, new heat sinks continue to emerge. The application of heat pipes to the heat dissipation of electronic components is one of them. The system _ liquid changes between gas and liquid states, the degree remains unchanged and can be sucked «release a large amount of work, - change the traditional radiator, pure gold Depending on the conduction mode, heat dissipation and limited efficiency. The heat pipe is attached to the low-pressure tubular shell and shouts a proper amount of liquid vaporization heat, good flow, stable chemical properties, low liquidity, such as water, ethanol, and propane, and the liquid substance is heated and cooled. When the gas and liquid transitions between the two states, a large amount of heat is absorbed or released, so that the heat is rapidly transferred from the tube body to the other end. In order to facilitate the reflux of the liquid after condensation, a porous capillary structure is generally disposed on the inner wall surface of the heat pipe, and the porous capillary structure generates capillary force to drive the liquid after condensation to recirculate. It is conventional that the porous capillary structure of the heat pipe generally adopts a single uniform pore. Construction, such as a single sintered metal powder construction. Since the capillary force is inversely proportional to the pore size of the porous capillary structure, that is, the smaller the diameter of the pore is, the larger the capillary force is. Therefore, in order to achieve a larger capillary force and facilitate liquid reflux, the pore diameter of the porous material used is smaller. it is good. However, since the smaller the pore diameter of the fluid passing through the flow path during the flow, the frictional resistance and the viscous force of the fluid are also increased. Thus, the resistance of the liquid reflux is also increased, and the flow velocity is reduced. When the heat absorbed by the end of the heat absorption of the 1260387 is increased, the evaporation is accelerated, and the liquid is reduced due to the reflux resistance, so that the heat absorption end cannot be quickly caused, and the heat is caused by the heat. Therefore, the pore size and pore distribution of the porous capillary structure of the thermal officer affect the heat pipe. Therefore, it is hoped that the porous capillary structure of the porous pores can be provided by the pores.
/改善歸内多孔結構層之構造，有必要提供—種具有較高毛細力 與較低回雜力之鮮，以及提供—觀鮮的製造方法。 該k結式熱官包括金屬管體，該管體内壁上設有燒結粉末構成的多 孔毛、^構’ $多孔毛細結構沿熱管之徑向形成多層式結構，且每一層 沿熱管之軸向形成多段式結構。 曰 ⑽該燒結式熱管之製造方法包括以下步驟：準備步驟，即提供一金屬 二及具有多種尺寸大小的粉末顆粒；填粉步驟，即以一芯棒作為結構 層厚f的控制，將上述粉末雜分批次填人至#_，以在管體之轴向 形成夕4結構並作快速燒結，重複該倾致使沿該管體的徑向形成多 層…構層，整體燒結及後續處理步驟，即麵有粉末均填人管體内後作 正體燒結，燒結完成後將最後―次插人的芯棒抽出，並㈣體空腔 入工作液體後密閉該管體。 r库上述燒結式熱管通過製成多層多段式燒結躲纽結構，形成立體 隙文化，孔_父大的多孔結構對流體阻力小，而孔隙較小的多孔 流體的毛細作用力大，可同時達到提供較低回流阻力 作用力，從吨昇絲性能。 ^ 【實施方式】 下面參照附圖，結合實施例對本發明作進—步說明。 士第圖所不’本發明熱管10包括—管體12以及設於該管體η 面的多孔毛細結構。其中，該管體12由導熱性能良好之金屬材料 1260387 士銅等製成，圖中所不管體u之橫載面呈圓形，可以理解地，管體u 之域面也可為其它形狀’如方形’多邊形，概圓形等。另外，管體 12内還填充紅作液體(圖未示），該卫作液體—般採祕沸點之液體， 如水、酒精等。 。。玄熱s 10 -端形成洛發段A ’另—端形成冷凝段c，且根據應用 Ϊ要可在兩段巾間錄段B，雜發段A麟賊外界熱源的熱 =主X且^熱里傳遞給官内的卫作液體，使其蒸發，親熱段B主要是 μ貝，輸H亚擔負著與外界隔熱的糊，該冷凝段c的作用是使氣 恕的蒸氣冷凝，並把熱量通過管壁傳到管外。 該熱管10内的多孔毛細結構由三層厚度大致相等且相互緊密接觸 之燒結粉末層構成’沿歸1G之徑向由管體12 _向軸砂向依次為 ^層U、中間層16、外層18，各層燒結粉末可由陶曼粉末或者金屬粉 ^如銅粉輪由燒結製誠軸。其巾，每—層燒結粉末沿碰12的 轴向(長度方向)對應»段A、賴段B及冷赌c職三段式結構， 且各段之粉末顆粒大小不同，從而在各段粉末顆粒中形成的孔隙大小也 ^ ’另外，各層燒結粉末在管體12 __壯也不相_致，使得 认A、絕熱段冷凝段C的任意—段沿管體12的徑向看，各 j結粉末之間亦相互層疊形祕隙大小不同的梯度結構，從而上述各 ^7末化熱吕之軸向及控向均形成梯度變化之立體孔隙結構，當熱 作〗_ 口玄夕孔毛細結構之孔隙呈立體梯度變化來調整教管 =玉孔隨大的纽結構對越阻力小，而孔隙較小的多孔結構對流 U)之力大，從錢觀餘及高毛崎力差之功效，提昇熱管 之整體性能。 上述實關巾纽毛細結狀各層厚辆勻，且每—層之各段的長 ς二與熱官10的»段Α、絕熱段Β或冷凝段〇的長度相匹配，當 ^霄際巾’可根據f要設計多孔毛細結構層各層之厚度絲—層各段 、度，如第二圖所示之本發明第二較佳實施例所揭示之熱管扣曰中广 1260387 其多孔毛細結構之外層28厚度最小，中間層％厚度最大’心以厚 度居中’又如第三圖所示之本發明第三較佳實施例所揭示之熱管3〇 中，其多孔毛細結構每-層之各段設計成長度不等之三段式結構，並且 使相鄰兩層的各段之間呈部分錯開型態。 柄明之上述實施例中，所採用的多孔毛細結構均沿熱管徑向形成 三層結構，骑-層沿熱管軸向形成三段式結構，當，然，根據實際需要， 該多孔毛細結構亦可以沿鮮徑向形成兩層或者三層以上的結構，而每 -層沿熱管軸向亦可以兩段或者三段以上的結構，且每―層的各段中， 非相鄰段之間所採關粉末顆粒大小可以不相同，但也可以相同。 第四圖(A)至第四圖(C)為本發明燒結式熱管之上述第一實施例的 製造方法過穌，大致包括三個步驟，分別騎備步驟、填粉步驟 及整體燒結及後續處理步驟，以下詳述之。 f先，通過!·帛選等方式準備純尺寸大小_:級末顆粒或者金屬 粉末顆粒如銅粉等，以供分梯次形成在管體12内；然後，在預先取得的 金屬官體12中插入一芯棒40a如銅柱，並於芯棒4〇a與管體12内壁所形成 的空間内分多批次填入尺寸大小不同的粉末顆粒，並作快速初步燒結， 以使所填入之粉末顆粒在管體12的軸向上成多段式排佈之内層14，如第 四圖(A)所示，该快速燒結的目的在於使金屬粉末顆粒暫時連接在管體 12上，當芯棒4〇a抽出後不致沿管體12上散脫下來，以金屬銅粉末為例， 該快速燒結溫度一般為630°C左右；之後，抽出芯棒4〇a並替換另一尺寸 較小的芯棒40b，如第四圖(B)所示，此時接著於芯棒4〇b與上述内層之 間再分批次填入顆粒大小不同的粉末，並作快速初步燒結，以在上述内 層之基礎上再形成沿管體12軸向呈多段式排佈的中間層丨6 ;接著，抽出 芯棒40b並替換另一尺寸較小的芯棒4〇c，並於於芯棒4〇c與上述中間層 之間分批次填入顆粒大小不同的粉末，以在上述中間層之基礎上再形成 沿管體12軸向呈多段式排佈的外層18，如第四圖所示，此時，粉末 顆粒填充完畢，即可對所填入之粉末進行整體燒結，針對金屬銅粉末而 1260387 言’該整體燒結溫度奶耽左右，燒結完祕將最後—次插人的芯棒 C抽出’最後’財體12空腔喊人工作液體，抽成真空後並 體=行_，、即製縣發㈣-實關所述之燒結式熱管。。 田然’上述製造方法亦同樣適用本發明所述之其他實施例，比如 ，用芯棒對結構層進行厚度控制時，合理選擇各次所使用芯棒的 :可使上衫層結構層形成如上述第二實施财所示之厚度非均勾結 長度ΓΓΐΐϊΐ叙各段在填麟進行姉，射以使其各段形成 錯ί型態。° ^二貫施财所示，且使相鄰兩層的各段之間呈部分 可以理解地，針對每一層之各段進行填粉 :::r:==r;r= 但是r雖然上述實施例中僅針對_熱管進行說明’ 解地’本發明亦可以採用橫截面為其他 =形：圓:及:r，因一 應該，體=者由管體觸體内壁的方向，而、向” 以上所述者僅為二::::二專:,]要:’ _提出專利申請。惟’ 依本發明精神所作之料= 本案技藝之人士，在爰 内。 纽修飾或變化，魏涵蓋_下之巾請專利範圍 【圖式簡單說明】 意圖 第圖係本發明熱管第_較佳實施例沿轴向之剖面示 10 1260387 第二圖係本發明熱管第二較佳實施例沿軸向之剖面示意圖。 第三圖係本發明熱管第三較佳實施例沿軸向之剖面示意圖。 第四圖(A)至第四圖(C)係本發明熱管第一較佳實施例的製造方法 過程示意圖。 【主要元件符號說明】 軌管 i、、、 ty 10、20、30 管體 12 内層 14、24 中間層 16、26 外層 18、28 蒸發段 A 絕熱段 B 冷凝段 C 芯棒 40a、40b、40c/ Improving the structure of the inner porous structural layer, it is necessary to provide a method of manufacturing a high capillary force and a low back-up force, and providing a fresh look. The k-junction heat official comprises a metal pipe body, the inner wall of the pipe is provided with porous wool composed of sintered powder, and the porous capillary structure forms a multi-layer structure along the radial direction of the heat pipe, and each layer is along the axial direction of the heat pipe. Form a multi-segment structure.曰(10) The method for manufacturing the sintered heat pipe comprises the steps of: preparing a metal two and powder particles having various sizes; and filling the powder, that is, controlling the powder by using a core rod as a control layer thickness f The miscellaneous batch is filled into #_ to form a 44 structure in the axial direction of the pipe body and is rapidly sintered, and the pour is repeated to form a plurality of layers along the radial direction of the pipe body, the overall sintering and subsequent processing steps, Immediately after the powder is filled into the tube body, it is subjected to normal body sintering. After the sintering is completed, the last-inserted mandrel is extracted, and (4) the body cavity is sealed into the working liquid, and the tube body is sealed. The above-mentioned sintered heat pipe of r library is formed into a multi-layer multi-segment sintered dowel structure to form a three-dimensional gap culture, and the pore structure of the pore-parent has a small fluid resistance, and the capillary fluid with a small pore size has a large capillary force and can simultaneously reach Provides a lower return resistance force from tons of wire lift performance. [Embodiment] Hereinafter, the present invention will be further described with reference to the accompanying drawings. The heat pipe 10 of the present invention includes a pipe body 12 and a porous capillary structure provided on the n-face of the pipe body. Wherein, the pipe body 12 is made of a metal material 1260387, such as copper, which has good thermal conductivity. In the figure, the cross-sectional surface of the body u is circular, and it can be understood that the surface of the pipe body u can also be other shapes. Such as square 'polygon, round shape and so on. In addition, the tube body 12 is also filled with a red liquid (not shown), which is a liquid such as water or alcohol. . . The heat-sinking s 10-end forms the Luofa section A 'the other end forms the condensation section c, and according to the application, the section B can be recorded between the two sections of the towel, and the heat of the external heat source of the lion thief is the main X and ^ The heat is transferred to the official liquid in the official to evaporate. The intimate section B is mainly μ shell, and the H sub-load is negatively insulated with the outside. The function of the condensation section c is to condense the vapor of the gas, and Transfer heat through the tube wall to the outside of the tube. The porous capillary structure in the heat pipe 10 is composed of three layers of sintered powder having substantially equal thicknesses and in close contact with each other. 'The radial direction of the 1G is from the tube body 12 to the axis sand to the layer U, the intermediate layer 16, and the outer layer. 18, each layer of sintered powder can be sintered from Taoman powder or metal powder such as copper powder wheel. The towel, each layer of sintered powder along the axial direction (length direction) of the touch 12 corresponds to the three-stage structure of the section A, the section B and the cold gambling c, and the powder particles of each section are different in size, so that the powders in each section The size of the pores formed in the particles is also 'in addition, the sintered powder of each layer is not in the tube body 12, so that any part of the condensation section C of the A and the adiabatic sections is seen along the radial direction of the tube body 12, each The j-junction powders are also stacked with each other to form a gradient structure with different size of the secret gap, so that the axial and the control directions of the above-mentioned respective finalized heats are formed into a gradient-changing three-dimensional pore structure, and when the heat is made _ mouth Xuanxi hole The pores of the capillary structure are adjusted in a three-dimensional gradient to adjust the teaching tube = the smaller the resistance of the jade hole with the large new structure, and the greater the convection of the porous structure with smaller pores, the greater the force from the money and the high Efficacy, improve the overall performance of the heat pipe. The above-mentioned solid towel has a thin layer of thick and uniform layers, and the length of each section of the layer is matched with the length of the section of the heat officer 10, the length of the adiabatic section or the length of the condensation section. 'The thickness of each layer of the porous capillary structure layer can be designed according to f. The length and degree of the layer of the porous capillary structure layer, as shown in the second figure, the heat pipe buckle disclosed in the second preferred embodiment of the present invention, 1260387, its porous capillary structure The outer layer 28 has the smallest thickness, the middle layer has the largest % thickness, and the center is centered by the thickness. In the heat pipe 3〇 disclosed in the third preferred embodiment of the present invention as shown in the third figure, the perforated capillary structure is each layer of each layer. It is designed as a three-stage structure of unequal length, and the sections of the adjacent two layers are partially staggered. In the above embodiment of the handle, the porous capillary structure is formed into a three-layer structure along the radial direction of the heat pipe, and the ride-layer forms a three-stage structure along the axial direction of the heat pipe. When, according to actual needs, the porous capillary structure is also Two or more layers may be formed in the fresh radial direction, and each layer may have two or more stages along the heat pipe axial direction, and each of the layers is separated from the non-adjacent segments. The particle size of the powder can be different, but it can be the same. The fourth (A) to the fourth (C) are the manufacturing methods of the first embodiment of the sintered heat pipe of the present invention, and generally comprise three steps, respectively, a riding step, a powder filling step, and an overall sintering and subsequent Processing steps, as detailed below. f First, the pure size _: the final particle or the metal powder particle such as copper powder is prepared by the method of selection, etc., for forming the step in the tube body 12; then, in the metal body 12 obtained in advance Inserting a mandrel 40a such as a copper column, and filling a plurality of batches of powder particles of different sizes in a space formed by the mandrel 4〇a and the inner wall of the pipe body 12, and performing rapid preliminary sintering to fill in The powder particles are arranged in a plurality of stages in the axial direction of the tubular body 12, as shown in the fourth diagram (A). The purpose of the rapid sintering is to temporarily attach the metal powder particles to the tubular body 12 as a mandrel. After 4抽a is taken out, it will not be scattered along the tube body 12. Taking the metal copper powder as an example, the rapid sintering temperature is generally about 630 ° C; after that, the mandrel 4 〇 a is taken out and replaced with another small-sized core. The rod 40b, as shown in the fourth figure (B), is then filled with a powder having a different particle size between the core rod 4〇b and the inner layer, and is rapidly pre-sintered to be in the inner layer. Further forming an intermediate layer 丨6 arranged in a plurality of stages along the axial direction of the pipe body 12; The core rod 40b is taken out and replaced with another small-sized core rod 4〇c, and a powder having a different particle size is filled in batches between the core rod 4〇c and the intermediate layer to form a base on the intermediate layer Further, an outer layer 18 is arranged in a plurality of stages along the axial direction of the tube body 12, as shown in the fourth figure. At this time, after the powder particles are filled, the powder to be filled can be integrally sintered, and the metal copper powder is used. 1260387 言 'The whole sintering temperature is about the milk thistle, the last time the sintering is finished, the last time the mandrel C is pulled out, the 'final' financial body 12 cavity calls the working liquid, and after vacuuming, the body = line _, ie The sintering heat pipe described in the county (4)-Shiguan. . Tian Ran's other manufacturing methods are also applicable to other embodiments of the present invention. For example, when the thickness of the structural layer is controlled by a mandrel, it is reasonable to select the mandrel used for each time: the upper layer structure layer can be formed as The thickness of the non-uniform collusion length shown in the second implementation of the above-mentioned implementation is described in the lining of the lining, and the segments are formed so that the segments are formed in a wrong state. ° ^ 贯 施 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , In the embodiment, only the _heat pipe is described as 'solving the ground'. The invention may also adopt a cross section of other shape: circle: and: r, because one should, the body = the direction in which the pipe body touches the inner wall, and The above mentioned are only two::::two special:,] to: ' _ file a patent application. Only 'in accordance with the spirit of the invention made = the person skilled in the case, in the 。. New decoration or change, Wei专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利 专利BRIEF DESCRIPTION OF THE DRAWINGS The third drawing is a schematic cross-sectional view of a third preferred embodiment of the heat pipe of the present invention in the axial direction. The fourth drawing (A) to the fourth drawing (C) are the manufacturing of the first preferred embodiment of the heat pipe of the present invention. Schematic diagram of the method process [Description of main component symbols] Rails i,, ty 10, 20, 30 Body 12 Inner layers 14, 24 Outer layers 18, 28, 16, 26, adiabatic section evaporating section A B C condensing section mandrel 40a, 40b, 40c