201035511 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種熱導管，特別涉及一種扁平薄型 熱導管。 / 【先前技術】201035511 VI. Description of the Invention: [Technical Field] The present invention relates to a heat pipe, and more particularly to a flat thin heat pipe. / [Prior technology]
現階段，熱導管因其具有較高傳熱量的優點，已 被廣泛應用於具較大發熱量的電子元件中，而對於 内部空間狹小的電子設備如筆記型電腦中，因安裝 空間的限制，使得扁平型熱導管的應用較為普遍。 習知的扁平型熱導管大多整個殼體的内壁都設 有毛細結構，該毛細結構一般為溝槽型或燒結型。 =殼體具有相互平行且上下相對的上板和下板，貼 又；μ上板内壁的毛細結構和下板内壁的毛細結構 之=需間隔—定距離以形成蒸汽通道供蒸汽通過。 田刖4平型熱導管正朝超薄型化方向發展’當該 各:知熱導管的殼體很薄時，即該上板與下板之間的 f曰距很小時’由於該毛細結構自身具有—定厚度， ^寻該上板内壁和下板内壁的毛細結構易貼合於-=塞熱導管内部的蒸汽通道’導致蒸汽無法順 該熱導管的内部流動，從而影響熱導管的性 月&。 【發明内容】 鑒於此’有必要提供一種具高性能的扁平薄型熱 3 201035511 導管。 ί平薄型熱導管，包括一中空爲平管體及 °又、s體内壁的毛細結構，該管體沿其縱向包括一 一冷凝段’該毛細結構從該管體的蒸發段 ^申至冷凝段，該管體沿橫向上由第—區域和第二 區域組成’該毛細結構僅鋪設於該第一區域的内壁。 ΟAt this stage, the heat pipe has been widely used in electronic components with a large amount of heat due to its high heat transfer capacity, and for electronic devices with a small internal space such as a notebook computer, due to limitations of installation space, The application of flat heat pipes is common. Conventional flat heat pipes are mostly provided with a capillary structure on the inner wall of the entire casing, and the capillary structure is generally a groove type or a sintered type. = The housing has upper and lower plates which are parallel to each other and are opposed to each other, and are attached; the capillary structure of the inner wall of the upper plate and the capillary structure of the inner wall of the lower plate are spaced apart to form a steam passage for the passage of steam. The Tianyi 4 flat heat pipe is developing towards ultra-thinization. 'When each: the heat pipe casing is thin, that is, the distance between the upper plate and the lower plate is very small' due to the capillary structure It has a certain thickness, and the capillary structure of the inner wall of the upper plate and the inner wall of the lower plate is easy to adhere to the steam passage inside the -= heat pipe, which causes the steam to flow along the inside of the heat pipe, thereby affecting the heat pipe. Month & SUMMARY OF THE INVENTION In view of this, it is necessary to provide a flat thin heat 3 201035511 catheter with high performance. The thin flat heat pipe comprises a hollow flat tube body and a capillary structure of the inner wall of the s body, the tube body including a condensation section along the longitudinal direction thereof. The capillary structure is applied from the evaporation section of the tube body to the condensation In the section, the tubular body is composed of the first region and the second region in the lateral direction. The capillary structure is laid only on the inner wall of the first region. Ο
,該爲平薄型熱導管中，其毛細結構僅鋪設於該管 2㊣域的内壁’而第二區域内壁並未覆蓋毛細 ::’從而在第二區域内由内壁圍成一較寬的氣流 n。因此，當該扁平薄型熱導管具有極薄的厚度 時’其f㈣仍具有較寬的氣流通道而保障該扁平 薄型熱導管的性能，與f知整個内壁都設有毛細结 構的熱導管相比，該扁平薄型熱導管可加工至更 薄，更能適應電子設備小型化的發展趨勢。 【實施方式】 請一併參關1和圖2，該扁平薄型熱導管10 I括中工扁平官體12、設於該管體12内壁的一毛 細結構14及注入該管體12内的適量工作液體。 該管體12由銅等具良好導熱性的材料製成，可 將其外部的熱量傳遞至其内部。 该管體12呈縱長狀，沿其縱向包括一蒸發段i2i 及一冷凝段122。該管體12為一中空密封腔體，其 由一中空圓官壓扁而成，包括一頂板124、一底板126 4 201035511 及兩側板125。該頂板124與底板126相互平行且上 下相對，該兩側板125呈弧形，分別位於管體12的 •兩側並與頂板124和底板126相連，從而使該管體 - 12在與縱向垂直的橫向的截面上形成類似跑道型的 輪扉。 該管體12沿橫向上由一第一區域和—第二區域 組成，該第一區域和第二區域都呈橫置的U形結構' 〇 該第一區域和第二區域左右相對且鏡面對稱。該第一 區域和第二區域均包括上下間隔相對的兩部分管 壁，該毛細結構14僅貼設於該第一區域的整個内 壁，未覆蓋第二區域，因此該第二區域内由内壁圍成 一較寬的第一氣流通道120。 該毛細結構14是由一張長方形的網狀結構卷設 而成的。該網狀結構可由銅、不銹鋼、纖維等材料製 ❹成的絲線編織而成。該毛細結構14上形成複數細小 的孔隙，這些孔隙可產生毛細力，從而為工作介質的 回流提供動力。 s亥毛細結構14呈縱長狀，在管體12的縱向上， 該毛細結構14從該管體12的蒸發段121延伸至冷凝 段122。該毛細結構14沿橫向的截面上的輪廓也呈u 形，與管體12的第一區域内壁的輪廓相配合。整個 s亥毛細結構14鋪設於該第一區域的内壁，並且該毛 細結構14的整個外周面貼設於管體12的内壁。該毛 5 201035511 細結構14包括上下相對且對稱的第一部分i4i和第 二部分142，該第—部分141和第二部分142相對間 ，隔貼設於該管體12第一區域的上下兩部分的内壁， •從而於其間形成一較窄的第二氣流通道140。 田」4毛細結構14也可鋪設於該管體12的第 二區域的内壁’從而於第一區域内由内壁圍成一較寬 :第-氣流通道120’而設置於第二區域内的毛細結 〇 f 14的第一部分141和第二部分142間隔形成一較 乍的第二氣流通道140。In the flat-type heat pipe, the capillary structure is only laid on the inner wall of the positive direction of the tube 2 and the inner wall of the second region is not covered with the capillary:: 'so that the inner wall encloses a wider airflow in the second region n. Therefore, when the flat thin heat pipe has an extremely thin thickness, the f (four) still has a wide air flow passage to ensure the performance of the flat thin heat pipe, compared with a heat pipe in which the entire inner wall is provided with a capillary structure. The flat and thin heat pipe can be processed to a thinner size and is more suitable for the development trend of miniaturization of electronic equipment. [Embodiment] Referring to FIG. 1 and FIG. 2 together, the flat thin heat pipe 10I includes a flattened flat body 12, a capillary structure 14 disposed on the inner wall of the pipe body 12, and an appropriate amount injected into the pipe body 12. Working liquid. The tube body 12 is made of a material having good thermal conductivity such as copper, and heat from the outside thereof can be transmitted to the inside thereof. The tubular body 12 is elongated and includes an evaporation section i2i and a condensation section 122 along its longitudinal direction. The tubular body 12 is a hollow sealed cavity which is formed by flattening a hollow circular body, and includes a top plate 124, a bottom plate 126 4 201035511 and two side plates 125. The top plate 124 and the bottom plate 126 are parallel to each other and face up and down. The two side plates 125 are curved and are respectively located on both sides of the pipe body 12 and connected to the top plate 124 and the bottom plate 126, so that the pipe body 12 is perpendicular to the longitudinal direction. A racetrack-like rim is formed on the transverse section. The tube body 12 is composed of a first region and a second region in the lateral direction, and the first region and the second region both have a transverse U-shaped structure 〇 the first region and the second region are opposite to each other and mirror symmetrical . The first region and the second region each include a two-part pipe wall that is spaced apart from each other. The capillary structure 14 is only attached to the entire inner wall of the first region, and does not cover the second region. Therefore, the second region is surrounded by the inner wall. A wider first air flow passage 120 is formed. The capillary structure 14 is formed by winding a rectangular mesh structure. The mesh structure can be woven from a wire made of copper, stainless steel, fiber or the like. A plurality of fine pores are formed in the capillary structure 14, which generate capillary forces to power the backflow of the working medium. The shoal capillary structure 14 is elongated, and in the longitudinal direction of the tubular body 12, the capillary structure 14 extends from the evaporation section 121 of the tubular body 12 to the condensation section 122. The profile of the capillary structure 14 in the transverse cross section is also u-shaped, matching the contour of the inner wall of the first region of the tubular body 12. The entire shoal capillary structure 14 is laid on the inner wall of the first region, and the entire outer peripheral surface of the capillary structure 14 is attached to the inner wall of the tubular body 12. The hair 5 201035511 fine structure 14 includes a first portion i4i and a second portion 142 which are vertically opposite and symmetrical. The first portion 141 and the second portion 142 are oppositely disposed on the upper and lower portions of the first region of the tubular body 12. The inner wall, thereby forming a narrower second air flow passage 140 therebetween. The "4" capillary structure 14 can also be laid on the inner wall ' of the second region of the tubular body 12 so as to be surrounded by the inner wall in the first region: the first airflow passage 120' and the capillary disposed in the second region The first portion 141 and the second portion 142 of the crucible f 14 are spaced apart to form a relatively thin second air flow passage 140.
Μ Ϊ工作介f為水、躐、酒精、f料具較低沸點 的物質。當管體12的蒸發段m與熱源接觸時，該 #作"貝從蒸發段121處吸熱蒸發，帶著熱量從第一 氣抓通道12〇和第二氣流通冑⑽運動至冷凝段 122 ’在冷凝& 122纟熱後凝結成液體，絲量釋放 =，完成對發熱元件（圖未示）的散熱。該毛細結 k供毛細力使在管體12的冷凝段i 2 2凝結形成 的工作介質回流至蒸發段121，實現工作介f在管艘 2内的循環運動’以完成對發熱元件的持續散熱。 楚一 f於該熱導管10内形成有第-氣流通道120和 -氣流通道⑽，而第—氣流通道⑽由第二區域 里内壁圍成’該第一氣流通道12〇的外 =構u，從而使該第一氣流通道12。丄 、 堵塞。因此即使當管體12發生變形使該第 6 201035511 二氣流通道140堵塞而阻礙蒸汽通過時，該第一氣流Μ Ϊ Work is a substance with a lower boiling point for water, hydrazine, alcohol, and f. When the evaporation section m of the pipe body 12 is in contact with the heat source, the ##"&"; the shell absorbs heat from the evaporation section 121, and carries heat from the first gas grabbing passage 12 and the second airflow passage (10) to the condensation section 122. 'Condensation into liquid after condensation & 122 heat, silk release = complete the heat dissipation of the heating element (not shown). The capillary knot k is supplied with capillary force to return the working medium formed by condensation in the condensation section i 2 2 of the pipe body 12 to the evaporation section 121, so as to realize the circulation movement of the working medium f in the vessel 2 to complete the continuous heat dissipation of the heating element. . The first air flow channel 120 and the air flow channel (10) are formed in the heat pipe 10, and the first air flow channel (10) is surrounded by the inner wall of the second region to form the outer air structure of the first air flow channel 12, Thereby the first air flow channel 12 is made.丄, blocked. Therefore, even when the pipe body 12 is deformed to block the sixth 201035511 air flow passage 140 and block the passage of steam, the first air flow
通道120仍保持暢通供蒸汽通過，從而保障該熱導= • 10的性能。 B 同理，當需要具有更薄的厚度的熱導管時，可將 熱導官10壓至更薄，即使當該毛細結構14的第一部 分141和第二部分142相互貼合時，也即該毛細結構 14將第一區域的上下兩部分内壁之間的間隙填滿 ❹ 時，只要該第二區域的上下兩部分管壁之間形成一間 隙，該第二區域内便由内壁圍成一第一氣流通道 保證蒸汽的順利流通，進而保持熱導管1〇性能的穩 疋，因此，該熱導管10可加工至很薄，其厚度（也 即該熱導管10的頂板124外表面與底板126外表面 之間的距離h)可達到i.2mm以下，甚至當熱導管 10厚度為1.0mm、〇.8mm時，該熱導管1〇仍能保證 〇 良好的性能。相較習知的整個殼體内壁都設有毛細結 構的扁平型熱導管，本實施方式的熱導管可做得 更薄，更適用於内部空間狹小的電子設備如筆記型電 腦等。 本實施例中，由於該第一區域和第二區域是對稱 的，而该毛細結構14僅覆蓋該第一區域的整個内 壁，因此該毛細結構14覆蓋了該管體12整個内壁的 1/2。當然，該毛細結構14不僅限於覆蓋該管體12 内壁的一半，經反復試驗證明，在其他實施例中，該 7 201035511 毛、、田、、Ό構14可覆蓋該管體12整個内壁的1/3以上3/4 以1，但需要保證該毛細結構14僅設於該管體12 内橫向的一側，即設於管體12第一區域（或第二區域、 的内壁’從而使得該管體12的第二區域(或第一區域、 2成較寬的第—氣流通道12()以保障蒸汽的順利 Ο ❹ 請一併參閱圖3至圖弘所述熱導管1〇可 下步驟制得：提供一中空圓形金屬管體仏；提供一 長度與寬度比大的長方形網狀毛細結構Ua;將毛細 =構14a卷設L為半圓料縱長結構，置入該 吕體12a内，使該管體12a的縱向上從管體的二 端延伸至另-端，並且該毛細結構14a的整個外周面 貼叹於該管體12a的内壁，在管體i2a的橫向截 該毛細結構14a覆蓋該㈣12a整個内壁^ 、’對已置入毛細結構14a的管體仏進行加溫，使 该毛細結構！4a局部熔融，從而使該毛細結構ua固 疋於該管體！2a的内壁上不易脫落；注液、抽真空後 密封管體！2a;屢扁該管體仏’使該管體12沿其橫 向的截面上形成呈U形的第一區域和第二區域，並 使該毛細結構14位於該管體12的第一區域内壁’最 後得到所需熱導管10。相對於習知溝槽型或燒結型 的薄型熱導管，該熱導㈣的制程簡單，便於量產。 請參閱圖6’圖示為本發明第二實施方式的爲平 8 201035511 薄型熱導管60，該妖道其^ 熱導官60包括一中空的扁 體62及設於管I# 〇免辟t π廊十狀e 體62内壁的-毛細結構64。在管體 62的縱向上，兮玉4从μ 你e遐 4毛細結構64從該管體 延伸至管體62的A、錄讲—盘 4 Μ数π 該實施方式與第一實施方 式的熱導官10的不回夕步 不门之處在於.该官體02的第一區 域為底板626所在的輯，該管體6 該頂板024所在的區竹1域為 ♦ 吓仕的區域，该毛細結構04為一長度與The passage 120 remains unobstructed for steam to pass, thereby ensuring the performance of the thermal conductivity = 10 . B. Similarly, when a heat pipe having a thinner thickness is required, the heat guide 10 can be pressed to be thinner even when the first portion 141 and the second portion 142 of the capillary structure 14 are attached to each other. When the capillary structure 14 fills the gap between the inner walls of the upper and lower portions of the first region, as long as a gap is formed between the upper and lower portions of the second region, the second region is surrounded by the inner wall. An air flow passage ensures smooth circulation of the steam, thereby maintaining the stability of the heat pipe 1 . Therefore, the heat pipe 10 can be processed to a very thin thickness (i.e., the outer surface of the top plate 124 of the heat pipe 10 and the bottom plate 126). The distance h) between the surfaces can reach below i. 2 mm, and even when the thickness of the heat pipe 10 is 1.0 mm, 〇.8 mm, the heat pipe 1 〇 can still ensure good performance. Compared with the conventional flat heat pipe having a capillary structure on the inner wall of the entire casing, the heat pipe of the present embodiment can be made thinner, and is more suitable for an electronic device having a small internal space such as a notebook computer. In this embodiment, since the first region and the second region are symmetrical, and the capillary structure 14 covers only the entire inner wall of the first region, the capillary structure 14 covers 1/2 of the entire inner wall of the tubular body 12. . Of course, the capillary structure 14 is not limited to covering half of the inner wall of the tubular body 12. It has been proved through trial and error that in other embodiments, the 7 201035511 hair, the field, and the structure 14 can cover the entire inner wall of the tubular body 12 /3 or more 3/4 is 1, but it is necessary to ensure that the capillary structure 14 is provided only on the lateral side of the tubular body 12, that is, in the first region of the tubular body 12 (or the inner wall of the second region) so that the The second area of the tube body 12 (or the first area, 2 into the wider first air flow passage 12 () to ensure the smooth flow of steam. Please refer to Figure 3 to Figure 5 for the heat pipe 1 step. The invention provides: providing a hollow circular metal tubular body; providing a rectangular mesh capillary structure Ua having a large length to width ratio; and winding the capillary = 14a to form a semicircular longitudinal structure, and inserting into the compact 12a The longitudinal direction of the tubular body 12a extends from the two ends of the tubular body to the other end, and the entire outer peripheral surface of the capillary structure 14a is inspected against the inner wall of the tubular body 12a, and the capillary structure is cut in the transverse direction of the tubular body i2a. 14a covers the entire inner wall of the (four) 12a ^, 'heats the tube body that has been placed into the capillary structure 14a The capillary structure !4a is partially melted, so that the capillary structure ua is fixed on the inner wall of the tube body 2a; it is not easy to fall off; after injecting liquid, vacuuming, sealing the tube body! 2a; repeatedly flattening the tube body 仏' The tubular body 12 forms a U-shaped first region and a second region along a transverse cross section thereof, and the capillary structure 14 is located at the inner wall of the first region of the tubular body 12 to finally obtain the desired heat pipe 10. The thin heat pipe of the groove type or the sintering type is simple, and the process of the heat guide (4) is simple and convenient for mass production. Please refer to FIG. 6 ′ for the second embodiment of the present invention for the flat 8 201035511 thin heat pipe 60, the demon The heat guide 60 includes a hollow flat body 62 and a capillary structure 64 disposed on the inner wall of the tube I# 〇 t t 十 。 。 e e body 62. In the longitudinal direction of the tube body 62, 兮玉4 from μ 你 遐 遐 毛 毛 毛 毛 毛 毛 毛 毛 毛 毛 毛 毛 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你 你The first area of the official body 02 is the set of the bottom plate 626, and the tube body 6 is located in the area where the top plate 024 is located. Region, the capillary structure 04 and a length
寬度比大的長方形網狀結構，該毛細結構64平鋪於 底板626的内壁，並與頂板624的内壁間隔相對。該 ，細結構64與項板624之間形成一可供蒸汽通過的 氣流通道620。由於該毛細結構64僅覆蓋該管體62 的底板626的内壁，而頂板624的内壁並未設置毛細 結構64,與習知的殼體的整個㈣均設有毛細結構 的熱導管相比，在相同厚度的管體62内，該熱導管 60具有較寬的氣流通道62〇而不易發生堵塞而保障 熱導管60的性能。因此對於超薄的管體62，該熱導 管60因具有較寬的氣流通道62〇而具有優良的性 能。當然，上述毛細結構64也可設於該管體62的頂 板624的内壁並與底板626的内壁相間隔。 綜上所述，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 佳貫施方式’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。 9 201035511 【圖式簡單說明】 圖1為本發明扁平 侧視圖。 圖2為圖1所示总 扁千薄型熱導管的橫向剖面 薄型熱導管第一實施方式的 圖 示意 圖3為圖1所示扁平薄型熱導一 流程圖。 製造方法的 Ο 圖4為圖2所示毛& @ ¥ λ α & 圖。 L田結才冓置入管體前的平面示意 Ο 圖5為圖3所示製造太、、土由 管體壓扁前熱導管的橫向剖面示意入圖細結構之後將 横向平薄賴導管第二實施方式的 【主要元件符號說明】 ί導管 1〇、6〇 ^ 12、12a、62 冷通道=蒸發段瓜 側板 .' 頂板 124、624 毛細結構.洳、64底板 126、必 第 氣流通道 140 第二部分 142 第一部分 氣流通道 141 620A rectangular mesh structure having a large width ratio, the capillary structure 64 is laid flat on the inner wall of the bottom plate 626 and spaced apart from the inner wall of the top plate 624. The fine structure 64 and the item plate 624 form an air flow passage 620 through which steam can pass. Since the capillary structure 64 covers only the inner wall of the bottom plate 626 of the tubular body 62, and the inner wall of the top plate 624 is not provided with the capillary structure 64, compared with the heat pipe of the conventional housing in which the entire (four) is provided with a capillary structure, Within the tube 62 of the same thickness, the heat pipe 60 has a wider air flow passage 62 and is less susceptible to clogging to ensure the performance of the heat pipe 60. Therefore, for the ultra-thin tube body 62, the heat-guiding tube 60 has excellent performance due to its wide air flow passage 62. Of course, the capillary structure 64 may also be disposed on the inner wall of the top plate 624 of the tubular body 62 and spaced from the inner wall of the bottom plate 626. 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, which is not intended to limit the scope of the patent application in this case. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. 9 201035511 [Simplified illustration of the drawings] Fig. 1 is a flat side view of the present invention. Fig. 2 is a cross-sectional view of the first embodiment of the first embodiment of the present invention. Fig. 3 is a flow chart showing the first embodiment of the thin profile heat pipe of the first embodiment.制造 Manufacturing method Ο Figure 4 is the hair & @ ¥ λ α & Figure 5 shows the transverse section of the heat pipe shown in Figure 3, which is shown in Figure 3, and the second section of the heat pipe is flattened by the pipe. [Main component symbol description] ί conduit 1〇, 6〇^ 12, 12a, 62 cold passage = evaporation section melon side plate. 'Top plate 124, 624 capillary structure. 洳, 64 bottom plate 126, must flow channel 140 Two parts 142 The first part of the air flow channel 141 620