200528679200528679
200528679 五、發明說明（2) (1 )熱量1 5從熱源通過熱管管殼1 1和充滿工作流體1 3 之吸液芯1 2傳遞給工作流體1 3 ; (2 )工作液體1 3在蒸發段1 〇 a内液-氣分介面上蒸發； (3)蒸氣14從蒸發段i〇a流到冷凝段l〇b ; (4 )蒸氣1 4在冷凝段1 〇 b内氣-液分介面上凝結； (5 )熱量1 5從氣-液分介面通過吸液芯1 2、工作液體1 3 及管殼1 1傳給冷源； (6 )在吸液芯1 2内由於毛細作用使冷凝後工作流體1 3 回流到蒸發段1 0 a。 從上产過程（1 )及過程（5 )看出，管殼11在導熱過程中 起到重要）乍用。 先前技術中熱管管殼材質通常為銅、错、鋼、妓鋼、 不錄鋼、鐵、錄、鈦或其合金。 而電子技術之迅速發展，要求熱管導熱效率盡可能提 高，從而要求熱管管殼熱阻盡可能降低，以利於熱管能迅 ，將電子元件散發之熱量傳導至空氣中，確保電子元件正 惟200528679 V. Description of the invention (2) (1) The heat 1 5 is transferred from the heat source to the working fluid 1 3 through the heat pipe shell 11 and the liquid wick 12 filled with the working fluid 1 3; (2) the working liquid 1 3 is evaporating Evaporation on the liquid-gas interface in section 10a; (3) The vapor 14 flows from the evaporation section 10a to the condensation section 10b; (4) The vapor 14 is on the gas-liquid interface in the condensation section 10b (5) The heat 1 5 is transmitted from the gas-liquid interface through the liquid wick 1 2, the working liquid 1 3 and the tube shell 1 1 to the cold source; (6) due to the capillary effect in the liquid wick 12 The condensed working fluid 1 3 flows back to the evaporation section 10 a. It can be seen from the production process (1) and process (5) that the shell 11 plays an important role in the heat conduction process. In the prior art, the material of the heat pipe shell is usually copper, copper, steel, stainless steel, stainless steel, iron, stainless steel, titanium, or alloys thereof. The rapid development of electronic technology requires that the heat pipe's heat conduction efficiency be as high as possible, so that the heat resistance of the heat pipe shell is reduced as much as possible, so that the heat pipe can quickly transfer the heat emitted by the electronic components to the air, ensuring that the electronic components are correct.
一 ，「 次合金熱阻減~、〈芏間較小，不利方 =導熱效率進一步提升，普通金屬直接作為熱管管私和First, "The thermal resistance of the sub-alloy is reduced, and the difference is smaller. The disadvantage is that the thermal conductivity is further improved. Ordinary metals are directly used as heat pipes.
4成之熱管，不能滿足近年來電子元件散熱之㊉二^ 有鑑如此，提供—種管殼熱阻小、•熱效“二 非常必要。 干回之劳 【内容】 為解決先前技術中熱管管殼熱阻減小之空間較小，40% of the heat pipes can not meet the heat dissipation of electronic components in recent years ^ It is learned from this, to provide-a kind of small thermal resistance of the shell, "heat efficiency" is very necessary. The space for reducing the thermal resistance of the case is small,
第6頁 200528679 五、發明說明（3) 利於熱管導熱效率進一步提升之技術問題，本發明之目的 在於提供一種管殼熱阻小、導熱效率高之熱管。 本發明所提供之熱管包括一中空之管殼、緊貼管殼内 壁之毛細吸液芯以及充滿毛細吸液芯並密封於管殼内之工 作流體，其中該管殼包括一普通材質層以及一奈米碳材 層，該奈米碳材層形成於該普通材質層之外表面。 與先前技術相較，本發明所提供之熱管有以下優點： 熱管之管殼包括奈米碳材層，由於奈米碳材之高表面積及 其高導熱性，可降低管殼之熱阻，提高管殼之導熱性能， 從而提高 > 管導熱效率。 【實施方式】 下面結合圖示來說明本發明所提供之熱管實施方式： 請參閱第二圖，本發明所提供之熱管20包括管殼21、 毛細結構吸液芯2 2以及工作流體（未標示），該管殼2 1包括 普通材質層2 1 1以及奈米碳材層2 1 2，該奈米碳材層2 1 2形 成於普通材質層211之外表面。 管殼2 1之普通材質層2 1 1 —般為銅，亦可根據不同需 要采用不同材料，如銘、鋼、碳鋼、不錄鋼、鐵、錄、鈦 等及其合金或導熱性高分子材料（柔韌性較好）。 管殼2 1之奈米碳材層2 1 2中奈米碳材包括中空奈米碳 管、中空奈米碳球以及内包覆高熱傳導材料之奈米碳管或 奈米碳球中任意一種或多種之組合，其中該高熱傳導材料 包括銅、銘、金、銀或其合金。 普通材質層2 1 1成型之後，毛細結構吸液芯2 2形成於Page 6 200528679 V. Description of the invention (3) Technical problems that are conducive to the further improvement of the heat transfer efficiency of the heat pipe. The object of the present invention is to provide a heat pipe with a small heat resistance of the shell and a high heat transfer efficiency. The heat pipe provided by the present invention includes a hollow tube shell, a capillary liquid wick close to the inner wall of the tube shell, and a working fluid filled with the capillary liquid wick and sealed in the tube shell, wherein the tube shell includes a layer of ordinary material and a A nano carbon material layer formed on an outer surface of the ordinary material layer. Compared with the prior art, the heat pipe provided by the present invention has the following advantages: The shell of the heat pipe includes a nano-carbon material layer. Due to the high surface area and high thermal conductivity of the nano-carbon material, the heat resistance of the shell can be reduced and the heat resistance can be improved. Thermal conductivity of the tube shell, thereby improving > tube thermal conductivity. [Embodiment] The following describes the embodiment of the heat pipe provided by the present invention with reference to the drawings: Please refer to the second figure. The heat pipe 20 provided by the present invention includes a shell 21, a capillary structure wick 22, and a working fluid (not labeled). ), The tube housing 21 includes a common material layer 2 1 1 and a nano carbon material layer 2 1 2, and the nano carbon material layer 2 1 2 is formed on an outer surface of the common material layer 211. The common material layer 2 1 1 of the shell 2 1 is generally copper, and different materials can be used according to different needs, such as Ming, steel, carbon steel, non-steel, iron, titanium, titanium, etc. or their alloys or high thermal conductivity. Molecular materials (good flexibility). Nano carbon layer 2 1 2 of the shell 2 1 The middle carbon material includes any one of a hollow nano carbon tube, a hollow nano carbon ball, and a nano carbon tube or a nano carbon ball coated with a high thermal conductive material. Or a combination thereof, wherein the highly thermally conductive material includes copper, copper, gold, silver, or an alloy thereof. After the ordinary material layer 2 1 1 is formed, the capillary structure wick 2 2 is formed on the
第7頁 200528679 五、發明說明（4) 其内壁表面，奈 碳材可添加於陶 合後塗覆於該普 奈米碳材比 強之金屬，故， 以及提高管殼21 管殼21徑向 橢圓形、正方形 米，管長可從幾 本實&施方式 為圓柱形¥，管 為中空奈米碳管 吸液芯2 2可 絲網型吸液 之絲網，其材料 工作流體之相容 處理後卷製成所 壁非常重要，特 壁不均勻，將出 溝槽型吸液 通過擠壓和拉削 紋型。 燒結型吸液 金屬粉末粒子燒 米碳材層2 1 瓷或高分子 通材質層2 1 表面積大， 奈米碳材層 之導熱能力 截面可以為 、矩形、三 毫米至數十 熱管管殼21 徑為4毫米 層，塗覆於 以為絲網型 芯比較容易 一般為銅、 性來選定。 需要之形狀 別在蒸發段 現局部過熱 芯為轴向 >冓 而成；環向 2形成於其外壁表面。該奈米 材料等粘結劑或穩固劑中，混 1之外壁表面。 導熱性能遠高於銅等導熱性能 212可增大管殼21之傳熱面積 ，從而提高熱管導熱效率。 標準圓形，亦可以為異型，如 角形等。管徑為2毫米〜2 0 0毫 米。 之普通材質層211為銅，成型 ，長50毫米，其奈米碳材層212 銅管外壁表面 、溝槽型或燒結型。 製作，在市場購置定型網目數 不銹鋼、鐵絲網，可根據熱管 絲網買來後經過清洗及必要之 插入熱管。吸液芯緊貼管殼内 ，如果出現吸液芯貼合管殼内 〇 槽或環向溝槽形式。轴向溝槽 溝槽一般為加工方便而刻成螺 芯孔隙率一般為4 0〜5 0 %，係將大量填充用 結而成。適當選擇金屬粉末粒子粒度，燒Page 7 200528679 V. Description of the invention (4) On the inner wall surface, carbon nano material can be added to the metal after coating and coated with this carbon nano material with strong specific ratio. Therefore, the shell 21 and the radial direction of the shell 21 are improved. Oval, square meter, tube length can be changed from a few books & the application method is cylindrical ¥, the tube is a hollow nano carbon tube liquid wicking core 2 2 wire mesh type liquid absorption screen, its material is compatible with working fluid It is very important to roll the wall after processing. The special wall is uneven, and the grooved liquid absorption will pass through the extrusion and broaching pattern. Sintered liquid-absorbing metal powder particle burnt carbon material layer 2 1 Porcelain or polymer material layer 2 1 has a large surface area, and the thermal conductivity section of the nanometer carbon material layer can be rectangular, three millimeters to dozens of heat pipe shells 21 diameter It is a 4 mm layer, and it is easier to choose a copper core for coating a wire mesh core. The required shape is not in the evaporation section. The local overheating core is formed by the axial >冓; the hoop 2 is formed on the outer wall surface. This nano material is mixed with an outer wall surface in a binder or a stabilizer. The thermal conductivity is much higher than that of copper and other thermal properties. 212 can increase the heat transfer area of the shell 21, thereby improving the heat transfer efficiency of the heat pipe. Standard circles can also be shaped, such as angles. The pipe diameter is 2mm ~ 200mm. The common material layer 211 is made of copper, and has a length of 50 mm. The nano-carbon layer 212 of the outer wall surface of the copper tube is grooved or sintered. Manufacture and purchase the number of shaped meshes in the market. Stainless steel and barbed wire can be cleaned according to the heat pipe after the wire mesh is purchased and inserted into the heat pipe if necessary. The wick fits tightly inside the tube housing. If the wick fits inside the tube housing, a groove or annular groove is provided. Axial grooves Generally, grooves are engraved with a core porosity of 40 to 50% for easy processing. They are formed by filling a large number of holes. Appropriate selection of metal powder particle size, burning
200528679 五、發明說明（5) 結後可得到不同空隙尺寸之吸液芯。燒結溫度一般比燒結 材料溶點低1 0 0〜2 0 0 °c。 本實施方式采用銅粉末燒結吸液芯，燒結的大致方法 為於銅管中央插入一根芯棒（可用不銹鋼芯棒），棒粗細代 表將來蒸氣腔内徑大小，然後在芯棒和管壁所形成之環型 空間中填入待燒結之金屬銅粉末，將芯棒用支架固定後送 入加熱爐，在氫氣保護下燒結約半小時，燒結溫度為 8 1 0 °C〜8 8 0 °C。將管子從爐中取出，待冷卻後抽出芯棒， 並再次放入爐中燒結約一小時。 熱管可采用純水、氨水、甲醇、丙酮或庚烷等液體作 為工作流 '體，亦可在液體中添加導熱材料之微粒，如銅 粉、奈米碳材等，以增加工作流體之導熱性能。本實施方 式採用純水作為工作流體。 與先前技術相較，本發明所提供之熱管有以下優點： 熱管之管殼包括奈米碳材層，由於奈米碳材之高表面積及 其高導熱性，可降低管殼之熱阻，提高管殼之導熱性能， 從而提高熱管導熱效率。 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實施方 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。200528679 V. Description of the invention (5) Liquid wicks with different void sizes can be obtained after knotting. The sintering temperature is generally 100 ° C to 200 ° C lower than the melting point of the sintering material. In this embodiment, a copper powder is used to sinter the liquid wick. The approximate method for sintering is to insert a core rod (a stainless steel core rod can be used) in the center of the copper tube. The thickness of the rod represents the inner diameter of the vapor cavity in the future. The formed ring-shaped space is filled with metal copper powder to be sintered, the core rod is fixed with a bracket and sent to a heating furnace, and sintered under hydrogen protection for about half an hour. The sintering temperature is 8 1 0 ° C ~ 8 8 0 ° C . Take the tube out of the furnace, pull out the core rod after cooling, and put it in the furnace again for about one hour. The heat pipe can use liquids such as pure water, ammonia, methanol, acetone, or heptane as the working fluid. It can also add particles of heat-conducting materials, such as copper powder and carbon nano-materials, to increase the heat-conducting performance of the working fluid. . This embodiment uses pure water as the working fluid. Compared with the prior art, the heat pipe provided by the present invention has the following advantages: The shell of the heat pipe includes a nano-carbon material layer. Due to the high surface area and high thermal conductivity of the nano-carbon material, the heat resistance of the shell can be reduced and the heat resistance can be improved. The heat conduction performance of the tube shell improves the heat conduction efficiency of the heat pipe. In summary, the present invention has indeed met the requirements for an invention patent, and a patent application was filed in accordance with the law. However, the above are only the preferred embodiments of the present invention, and cannot be used to limit the scope of patent application in this case. All equivalent modifications or changes made by those skilled in the art of the case with the aid of the spirit of the present invention shall be covered by the scope of the following patent applications.
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