201202648 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種熱管加工方法。 [先前技術3 [0002] 熱管是一種高效的傳熱部件，在電腦等電子產品中已經 ' 得到了廣泛的應用。熱管一般包括一個兩端封閉且内部 - 被抽成真空的管殼、位於管殼内緊貼管壁的吸液芯、和 充填入管殼内的適量的工作液體。熱管的一端為蒸發端 ，另一端為冷凝端。當蒸發端受熱時，工作液體蒸發成 0 氣體，在氣壓壓力差作用下流動到冷凝端，釋放出熱量 並重新凝結成液體，然後在毛細作用下沿著吸液芯流動 回蒸發端，如此迴圈以實現熱量傳遞。 [0003] 充填入熱管的工作液體必須適量。如果工作液體過多， 則會阻礙氣體流動，從而影響傳熱效率；如果工作液體 過少，則工作液體全部氣化後，會由於沒有傳熱介質而 導致熱管無法再傳遞熱量。_ Ο [〇〇〇4] 目前往熱管中充填工作液體的方法是在一個包括管殼及 吸熱芯的熱管半成品中充填入一定量的液體，然後對管 殼抽真空並封口，從而得到熱管成品。這種方法存在的 問題是在對管殼抽真空時，部分液體會由於負壓而蒸發 ，從而無法精確的控制熱管成品中工作液體的數量。 【發明内容】 [0005] 有鑒於此，有必要提供一種可精確控制工作液體數量的 熱管加工方法。 099123171 表單編號A0101 第3頁/共13頁 0992040827-0 201202648 [0006] 一種熱管加工方法，包括步驟：提供一至少一端開口的 熱管半成品；向一中間管中充入一定量的工作液體；施 加低溫使得所述中間管中的所述工作液體凝結為固態； 保持低溫，將凝固後的所述工作液體充填入所述熱管半 成品；及保持低溫，對所述熱管半成品抽真空並封口。 [0007] 本發明的熱管加工方法由於是將工作液體凝固後再充填 入熱管半成品中，防止了由於抽真空時工作液體蒸發所 造成的熱管成品中工作液體的數量不能精確控制的問題 〇 【實施方式】 [0008] 下面將結合附圖，對本發明作進一步的詳細說明。 [0009] 請參閱圖1至圖4所示，本發明實施方式的熱管加工方法 包括如下步驟： [0010] 步驟S01 :提供一至少一端開口的熱管半成品。所述熱管 半成品10包括一管殼11和一吸熱芯12。所述管殼11的材 料一般為銅或鋁，也可根據需要採用其他材料，如不銹 鋼、合金鋼等。管殼11一般為一端開口、一端封閉，其 徑向截面一般呈圓形，管徑範圍為2毫米至200毫米，管 長範圍為幾毫米至數十釐米。所述吸熱芯12緊貼所述管 殼11的内壁，根據不同的需要可採用絲網型、燒結型、 或溝槽型吸熱芯。在本實施方式中，採用圓形的管殼11 ，管徑為10毫米，長150毫米。 [0011] 步驟S02 :向一中間管中充入一定量的工作液體。該中間 管20可以為硬質或軟質材料，中間管20兩端具有可打開 099123171 表單編號A0101 第4頁/共13頁 0992040827-0 201202648 [0012]201202648 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a heat pipe processing method. [Prior Art 3 [0002] A heat pipe is an efficient heat transfer component that has been widely used in electronic products such as computers. The heat pipe generally comprises a casing closed at both ends and internally - evacuated, a wick located in the casing against the wall, and an appropriate amount of working liquid filled into the casing. One end of the heat pipe is an evaporation end, and the other end is a condensation end. When the evaporation end is heated, the working liquid evaporates into 0 gas, flows to the condensation end under the pressure difference of the air pressure, releases the heat and recondenses into a liquid, and then flows back to the evaporation end along the wick under capillary action, so Circle to achieve heat transfer. [0003] The working fluid filled into the heat pipe must be in an appropriate amount. If there is too much working liquid, it will hinder the gas flow and affect the heat transfer efficiency. If the working liquid is too small, the working liquid will be completely vaporized, and the heat pipe will not transfer heat due to the absence of the heat transfer medium. _ Ο [〇〇〇4] At present, the method of filling the working fluid into the heat pipe is to fill a certain amount of liquid in a heat pipe semi-finished product including the shell and the heat absorbing core, and then vacuum and seal the shell to obtain the finished heat pipe. . The problem with this method is that when the casing is evacuated, part of the liquid evaporates due to the negative pressure, so that the amount of working liquid in the finished heat pipe cannot be accurately controlled. SUMMARY OF THE INVENTION [0005] In view of the above, it is necessary to provide a heat pipe processing method capable of accurately controlling the amount of working liquid. 099123171 Form No. A0101 Page 3 of 13 0992040827-0 201202648 [0006] A heat pipe processing method comprising the steps of: providing a heat pipe semi-finished product having at least one end open; filling a middle pipe with a certain amount of working liquid; applying low temperature The working liquid in the intermediate tube is condensed into a solid state; the low temperature is maintained, the solidified working liquid is filled into the heat pipe semi-finished product; and the low temperature is maintained, and the heat pipe semi-finished product is evacuated and sealed. [0007] The heat pipe processing method of the present invention is to solidify the working liquid and then fill it into the heat pipe semi-finished product, thereby preventing the problem that the amount of the working liquid in the heat pipe finished product cannot be accurately controlled due to evaporation of the working liquid during vacuuming. Modes [0008] The present invention will be further described in detail below with reference to the accompanying drawings. Referring to FIG. 1 to FIG. 4, a heat pipe processing method according to an embodiment of the present invention includes the following steps: [0010] Step S01: providing a heat pipe semi-finished product having at least one end open. The heat pipe semi-finished product 10 includes a casing 11 and a heat absorbing core 12. The material of the envelope 11 is generally copper or aluminum, and other materials such as stainless steel, alloy steel, etc. may be used as needed. The envelope 11 is generally open at one end and closed at one end, and has a generally circular cross section with a diameter ranging from 2 mm to 200 mm and a tube length ranging from several millimeters to tens of centimeters. The heat absorbing core 12 is in close contact with the inner wall of the casing 11, and a wire mesh type, sintered type, or groove type heat absorbing core may be used according to different needs. In the present embodiment, a circular envelope 11 having a diameter of 10 mm and a length of 150 mm is used. [0011] Step S02: charging a middle tube with a certain amount of working liquid. The intermediate tube 20 can be a hard or soft material, and the intermediate tube 20 can be opened at both ends. 099123171 Form No. A0101 Page 4 / Total 13 Page 0992040827-0 201202648 [0012]
[0013] 099123171 的密封蓋21之類的密封裝置，以保證充入的工作液體30 不會從中間管20流失。中間管20的形狀及大小必須確保 工作液體30凝固後，其可被充填入所述管殼11。在本實 施方式中，中間管20徑向的截面形狀與所述管殼11的徑 向截面形狀一致，即同樣呈圓形，所述中間管2 0的内徑 比所述管殼11的内徑小1毫米。 所述工作液體30根據需要可以選擇純水、氨水、曱醇等 ，也可在工作液體30中加入導熱材料微粒，如銅粉、納 米材料碳球，以增加工作液體30的導熱性能，由於純水 的凝固溫度較其他液體高，因此工作液體30優先選擇純 水。工作液體30充填的數量是預先確定的使得熱管傳熱 效率最高的數量。在本實施方式中，採用灌裝機23對中 間管20進行灌裝，在灌裝時蓋上中間管20—端的密封蓋 21，在灌裝完成後蓋上中間管20另一端的密封蓋21以密 封中間管20，從而防止中間管20内的工作液體30蒸發。 如果在灌裝後馬上會進行步驟S03，則也可不對中間管20 採取密封措施。 步驟S03 :施加低溫使得中間管中的工作液體凝結為固態 。所述低溫是使得工作液體凝固的溫度，例如，當工作 液體為純水時，在常壓下，施加的溫度必須低於零度。 在本實施方式中，採用將上述灌裝好的中間管20轉移至 一低溫車間的方法，來給中間管20中的工作液體30降溫 使其凝固。 必須說明的是，上述步驟S03和步驟S02作為一個整體， 和步驟S01之間並無一定的先後順序。即：既可以先準備 表單編號A0101 第5頁/共13頁 0992040827-0 [0014] 201202648 熱管半成品再往中間管中充填工作液體並使工作液體凝 固，也可先往中間管中充填工作液體並使工作液體凝固 後再準備熱管半成品，或二者同時進行。 [0015] 步驟S04 :將凝固後的工作液體充填入熱管半成品。請一 併參考圖4，將中間管20和熱管半成品10置於一工作臺40 上，中間管20置於熱管半成品10上方，中間管20和熱管 半成品10管口相對，打開中間管20的密封蓋21，可採用 各種已知的方法，例如活塞推動（當中間管20為硬質材 料時），或擠壓（當中間管20為軟質材料時），將凝固 後的工作液體充填入熱管半成品10中。 [0016] 步驟S05 :對熱管半成品抽真空並封口，從而獲得熱管成 品。 [0017] 必須說明的是，在進行上述步驟S04和步驟S05的過程中 同樣必須保持低溫，以防止凝固後的工作液體由於液化 或昇華而流失，因此，上述步驟最好同樣在上述低溫車 間進行。 [0018] 另外，本領域技術人員可在本發明精神内做其他變化， 然，凡依據本發明精神實質所做的變化，都應包含在本 發明所要求保護的範圍之内。 【圖式簡單說明】 [0019] 圖1為本發明實施方式的熱管加工方法的流程圖。 [0020] 圖2為熱管半成品的軸向載面示意圖。 [0021] 圖3為向一中間管充入工作液體的示意圖。 099123171 表單編號A0101 第6頁/共13頁 0992040827-0 201202648 [0022] 圖4為將凝固後的工作液體充入熱管半成品的示意圖。 [0023] 【主要元件符號說明】 提供至少一端開口的熱管半成品 S01 [0024] 向一中間管中充入一定量的工作液體 S02 [0025] 施加低溫使得中間管中的工作液體 [0026] 凝結為固態 S03 [0027] 將凝固後的工作液體充填入熱管半成品 S04 》 [0028] 對熱管半成品抽真空並封口 S05 [0029] 熱管半成品 10 [0030] 管殼 11 [0031] 吸熱芯 12 [0032] 中間管 20 [0033] 密封蓋 21 ) [0034] 工作液體 30 [0035] 工作臺 40 099123171 表單編號A0101 第7頁/共13頁 0992040827-0[0013] A sealing device such as a sealing cover 21 of 099123171 to ensure that the charged working fluid 30 is not lost from the intermediate tube 20. The shape and size of the intermediate tube 20 must ensure that the working liquid 30 can be filled into the envelope 11 after it has solidified. In the present embodiment, the cross-sectional shape of the intermediate tube 20 in the radial direction coincides with the radial cross-sectional shape of the envelope 11, that is, the same circular shape, and the inner diameter of the intermediate tube 20 is larger than the inner diameter of the envelope 11 The diameter is 1 mm smaller. The working liquid 30 may select pure water, ammonia water, decyl alcohol or the like as needed, or may add heat conductive material particles, such as copper powder and nano material carbon balls, to the working liquid 30 to increase the thermal conductivity of the working liquid 30, due to pure The solidification temperature of water is higher than that of other liquids, so the working liquid 30 preferentially selects pure water. The amount of working fluid 30 to be filled is a predetermined amount that maximizes the heat transfer efficiency of the heat pipe. In the present embodiment, the intermediate tube 20 is filled by the filling machine 23, and the sealing cover 21 of the intermediate tube 20 is closed at the time of filling, and the sealing cover 21 at the other end of the intermediate tube 20 is covered after the filling is completed. The intermediate tube 20 is sealed to prevent evaporation of the working fluid 30 in the intermediate tube 20. If step S03 is performed immediately after filling, the intermediate tube 20 may not be sealed. Step S03: applying a low temperature causes the working liquid in the intermediate tube to condense into a solid state. The low temperature is a temperature at which the working liquid solidifies. For example, when the working liquid is pure water, the applied temperature must be lower than zero at normal pressure. In the present embodiment, the working fluid 30 in the intermediate pipe 20 is cooled and solidified by a method of transferring the above-described filled intermediate pipe 20 to a low temperature plant. It should be noted that the above steps S03 and S02 are a whole, and there is no certain order between the steps S01 and S01. That is: you can prepare the form number A0101, page 5 / 13 pages 0992040827-0 [0014] 201202648 The heat pipe semi-finished product is filled into the middle pipe and the working liquid is solidified, or the working pipe can be filled into the middle pipe first. After the working liquid is solidified, the heat pipe semi-finished product is prepared, or both. [0015] Step S04: filling the solidified working liquid into the heat pipe semi-finished product. Referring to FIG. 4 together, the intermediate tube 20 and the heat pipe semi-finished product 10 are placed on a work table 40, and the intermediate tube 20 is placed above the heat pipe semi-finished product 10, and the intermediate tube 20 and the heat pipe semi-finished product 10 are opposite to each other, and the middle tube 20 is sealed. The cover 21 may be subjected to various known methods such as piston pushing (when the intermediate tube 20 is a hard material), or extrusion (when the intermediate tube 20 is a soft material), filling the solidified working liquid into the heat pipe semi-finished product 10 in. [0016] Step S05: vacuuming and sealing the heat pipe semi-finished product to obtain a heat pipe product. [0017] It should be noted that in the process of performing the above steps S04 and S05, it is also necessary to keep the low temperature to prevent the working liquid after solidification from being lost due to liquefaction or sublimation. Therefore, the above steps are preferably performed in the above-mentioned low temperature workshop. . In addition, those skilled in the art can make other changes in the spirit of the invention, and all changes that are made according to the spirit of the invention should be included in the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [0019] FIG. 1 is a flow chart of a heat pipe processing method according to an embodiment of the present invention. 2 is a schematic view of an axial load surface of a heat pipe semi-finished product. [0021] FIG. 3 is a schematic view of charging a middle tube with a working fluid. 099123171 Form No. A0101 Page 6 of 13 0992040827-0 201202648 [0022] FIG. 4 is a schematic view of charging a solidified working liquid into a heat pipe semi-finished product. [Main component symbol description] A heat pipe semi-finished product S01 provided with at least one end opening [0024] An intermediate pipe is filled with a certain amount of working liquid S02 [0025] A low temperature is applied so that the working liquid [0026] in the intermediate pipe is condensed into Solid S03 [0027] Filling the solidified working liquid into the heat pipe semi-finished product S04 》 [0028] Vacuuming and sealing the heat pipe semi-finished product S05 [0029] Heat pipe semi-finished product 10 [0030] Shell 11 [0031] Heat absorbing core 12 [0032] Middle Tube 20 [0033] Sealing Cap 21) [0034] Working Liquid 30 [0035] Table 40 099123171 Form No. A0101 Page 7 of 13 0992040827-0