200815725 九、發明說明： ^ 【發明所屬之技術領域】 * 本發明係涉及一種傳熱元件，尤係涉及一種迴路 熱管。 【先前技術】 隨著中央處理器（CPU)等電子元件功率之不斷 提而’散熱問題越來越受到人們之重視。迴路熱管 # (looP heatpipe，LHP)由於其高效之熱傳導性能而被 作爲一種有效之傳熱元件應用於散熱領域中。 目前，迴路熱管通常包括一蒸發部（evap〇rat〇r )、 一冷凝部（condenser)、一蒸氣管線（vap〇r Une)及 一液體管線（liquid line ) ’該蒸發部内設有毛細結構， 其與-發熱電子元件熱連接，該冷凝部與一散熱元件 結合，該蒸氣管線與液體管線設於蒸發部與冷凝部之 帛謂料發部與冷凝部連接成—·，該㈣㈣ 攀 A有工作流體，該液體管線與該蒸發部内之毛細結構 之間設有補償室（compensation chamber)。當迴路熱 管之蒸發部受熱時，其内之工作流體吸收熱量蒸發膨 服’經由該蒸氣管線流向該迴路熱管之冷凝部，並於 該冷凝部放熱冷凝收縮，冷凝後之工作流體經由該液 體營線返回至補償室與蒸發部，而完成一循環。藉由 這種方式，工作流體反復蒸發、冷凝，不斷地吸熱、 放熱，從而達到熱交換之目的。 由於習知迴路熱管之液體管線一般採用平滑圓 6 200815725 管，管内壁並無額外之毛細結構，從而使迴路熱管内 之工作流體之流動僅靠蒸發部内之毛細結構提供之 毛細驅動力而驅動，導致其抗重能力不甚理想。 【發明内容】 有鑒於此，有必要提供一種抗重能力較強之迴路 熱管。 一種迴路熱管，包括蒸發部、冷凝部、蒸氣管線 及液體管線，該蒸發部内設有毛細結構，該蒸氣管線 與液體管線設於蒸發部與冷凝部之間且將該蒸發部 與冷凝部連接成一迴路，該迴路内填充有工作流體， 該液體管線内設有可撓性編織脈管。 一種迴路熱管，包括蒸發部、冷凝部、連接蒸發 部與冷凝部之蒸氣管線及連接冷凝部與蒸發部之液 體管線，該蒸發部内設置有毛細結構，該毛細結構包 括形成爲封閉端之基部及從該基部之外周緣延伸形 成具有開放端之外圍壁部，該液體管線内設有由複數 細線編織形成之脈管，該脈管與上述毛細結構之基部 連接。 與習知之迴路熱管相比，上述迴路熱管中之脈管 産生之毛細力可驅使工作流體在迴路熱管内流動，以 使該迴路熱管之抗重力能力較強。 【實施方式】 圖1所示爲本發明迴路熱管10之一較佳實施例， 該迴路熱管10包括一蒸發部11、一冷凝部12、一蒸氣 200815725 件液體官線14 ’該蒸發部11與-發熱電子元 一 PU專（圖未示）熱連接，該冷凝部u爲一散熱 〜該放熱7L件所能採取之型式與結構多樣，例如 Y爲複數牙&在液體管線14上之散熱鰭片，該蒸氣管 、液體g線Η设於蒸發部^與冷凝部U之間且將 該蒸發部11與冷凝和連接成一迴路，該迴路内填充 有工作流體16 (如圖4所示），該卫作流體16可爲水、200815725 IX. Description of the invention: ^ [Technical field to which the invention pertains] * The present invention relates to a heat transfer element, and more particularly to a loop heat pipe. [Prior Art] With the continuous improvement of the power of electronic components such as a central processing unit (CPU), the problem of heat dissipation has been receiving more and more attention. Loop heat pipe # (looP heatpipe, LHP) is used as an effective heat transfer element in the field of heat dissipation due to its high heat transfer performance. At present, the loop heat pipe usually includes an evaporation portion (evap〇rat〇r), a condenser, a vapor line (vap〇r Une), and a liquid line. The evaporation portion is provided with a capillary structure. The condensing portion is thermally coupled to a heat-dissipating component, and the condensing portion is coupled to a heat-dissipating component, and the vapor line and the liquid line are disposed between the evaporation portion and the condensing portion, and the condensing portion is connected to the condensing portion, and the (four) (four) climbing A has A working fluid is provided with a compensation chamber between the liquid line and the capillary structure in the evaporation portion. When the evaporation portion of the loop heat pipe is heated, the working fluid therein absorbs heat and evaporates and expands to flow through the vapor line to the condensation portion of the loop heat pipe, and exothermic condensation shrinkage in the condensation portion, and the condensed working fluid passes through the liquid camp The line is returned to the compensation chamber and the evaporation portion to complete a cycle. In this way, the working fluid is repeatedly evaporated, condensed, and continuously absorbs heat and exotherms, thereby achieving the purpose of heat exchange. Since the liquid pipeline of the conventional loop heat pipe generally adopts a smooth round 6 200815725 pipe, the inner wall of the pipe has no extra capillary structure, so that the flow of the working fluid in the loop heat pipe is driven only by the capillary driving force provided by the capillary structure in the evaporation portion, As a result, its resistance to weight is not ideal. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a loop heat pipe with high resistance to heavy loads. A loop heat pipe includes an evaporation portion, a condensation portion, a vapor line and a liquid line, wherein the evaporation portion is provided with a capillary structure, the vapor line and the liquid line are disposed between the evaporation portion and the condensation portion, and the evaporation portion and the condensation portion are connected into one A circuit is filled with a working fluid, and a flexible braided vessel is disposed in the liquid line. A loop heat pipe includes an evaporation portion, a condensation portion, a vapor line connecting the evaporation portion and the condensation portion, and a liquid line connecting the condensation portion and the evaporation portion, wherein the evaporation portion is provided with a capillary structure, and the capillary structure includes a base portion formed as a closed end and A peripheral wall portion having an open end is formed extending from a periphery of the base portion, and a vessel formed by knitting a plurality of thin wires is disposed in the liquid line, and the vessel is connected to a base portion of the capillary structure. Compared with the conventional loop heat pipe, the capillary force generated by the vessel in the loop heat pipe can drive the working fluid to flow in the loop heat pipe, so that the loop heat pipe has strong anti-gravity ability. [Embodiment] FIG. 1 shows a preferred embodiment of a loop heat pipe 10 according to the present invention. The loop heat pipe 10 includes an evaporation portion 11, a condensation portion 12, a vapor 200815725 liquid guide line 14', and the evaporation portion 11 and - The heating element is a PU (not shown) thermal connection, the condensation part u is a heat dissipation ~ the type and structure of the exothermic 7L piece can be adopted, for example, Y is a plurality of teeth & heat dissipation on the liquid line 14 a fin, the vapor tube, the liquid g line is disposed between the evaporation portion and the condensation portion U, and the evaporation portion 11 is condensed and connected in a circuit, the circuit is filled with a working fluid 16 (as shown in FIG. 4) The working fluid 16 can be water,
/酉精等，通常係在迴路内抽成適當真空後注入至迴路 中’該液體官線14與冷凝部12内設有可撓性編織脈管 15 〇 請同時參照圖2至圖3，該蒸發部11在本實施例中 形成爲一中空管體，該蒸發部^一端與液體管線14之 液體回流口連接，另一端與蒸氣管線13之蒸氣入口相 連’該蒸發部11内設有沿其轴向延伸之毛細結構H2， 該毛細結構112爲多孔狀結構，其可爲燒結粉末 (sintered powder)、微細溝槽（fine grooves)、編織 網目（mesh)、纖維（fiber)或上述型式之複合式毛 細結構，該毛細結構112呈管筒狀，其縱向截面大致呈 U型，包括與液體管線14鄰接之一基部114及從該基部 114之外周緣垂直延伸形成之一環柱狀之外圍壁部 115,該基部Π4形成爲該毛細結構112之封閉端並與液 體管線14相連接，該壁部115貼附於蒸發部11之整個内 壁上，該壁部115於遠離該毛細結構112之基部114之一 端形成爲開放端。從而在蒸發部11之中部形成沿毛細 200815725 結構112之轴向延伸之一圓柱狀之蒸氣通道116，該蒸 氣通道116與蒸氣管線13之蒸氣入口連通，且其直徑大 於蒸氣管線13之内徑，以便於工作流體蒸發後産生 之蒸氣進入該蒸氣管線13内。/酉精精, etc., is usually injected into the circuit after drawing a suitable vacuum in the circuit. 'The liquid official line 14 and the condensing part 12 are provided with a flexible braided vessel 15 〇Please refer to FIG. 2 to FIG. 3 at the same time, The evaporation portion 11 is formed as a hollow tubular body in the present embodiment, and the evaporation portion 1 is connected to the liquid return port of the liquid line 14 and the other end is connected to the vapor inlet of the vapor line 13. An axially extending capillary structure H2, which is a porous structure, which may be a sintered powder, fine grooves, a mesh, a fiber, or the like. The composite capillary structure has a tubular shape and a substantially U-shaped longitudinal section, and includes a base portion 114 adjacent to the liquid line 14 and a peripheral wall extending from the outer periphery of the base portion 114 to form a ring-shaped peripheral wall. The portion 形成4 is formed as a closed end of the capillary structure 112 and is connected to the liquid line 14 attached to the entire inner wall of the evaporation portion 11, the wall portion 115 being away from the base of the capillary structure 112. One end of 114 An open end. Thus, a cylindrical vapor passage 116 extending along the axial direction of the capillary 200815725 structure 112 is formed in the middle of the evaporation portion 11, and the vapor passage 116 communicates with the vapor inlet of the vapor line 13 and has a diameter larger than the inner diameter of the vapor line 13, The vapor generated after the evaporation of the working fluid is introduced into the vapor line 13.
該蒸氣管線13與液體管線14可由與工作流體16 相容之可撓性材料製成，如銘、不鎮鋼、塑膠等。該 工作流體16填充至蒸發部n、冷凝部12、蒸氣管線13 及液體管線14所形成之迴路内，該工作流體16可爲蒸 顧水、甲醇、酒精或其混合物，該等物質沸點較低且 能與該脈管15相容，該液體管線14亦同時伸入至冷凝 部12内’因此當迴路熱管1〇之蒸發部1：[吸收熱量時， 其内之工作流體16可較易地蒸發並流向冷凝部12，且 可於該冷凝部12冷凝。冷凝後之工作流體16在液體管 線14内之脈管15及蒸發部1;1内之毛細結構112之毛細 力之共同作用下，回到蒸發部打進行下一循環。 請參照圖4至圖7，該脈管15爲一細長管，其外徑 小於液體官線14之内徑，該脈管15貼附於液體管線14 之内壁，並設於液體管線14之整個長度上（如圖丄所 示）。該脈管15由複數可撓性細線151 (如圖6所示） 編織而成，該細線151可爲纖維、纖維束、銅絲或不 鎮鋼絲等，該脈管15爲中空狀，其具有_環敎構 面，以於脈管15内部形成一中空通道152，同時，該 脈管15之管壁與液體管射做㈣之_成供工= 流體滅動之液體通道⑸，該巾”如2與液體通 9 200815725 道153可供工作流體16之儲存與輸送。該脈管15之編 織管壁形成毛細結構，並産生毛細力以促使工作流體 16往蒸發部11方向輸送。 操作時，迴路熱管10之蒸發部11内之工作流體16 從發熱電子元件吸熱蒸發成蒸氣，産生之蒸氣匯聚於 蒸發部11中央之蒸氣通道116内，並經蒸氣管線13向冷 凝部12流動，在冷凝部12放熱後冷凝爲液體，由於液 _ 體管線14内之脈管15及蒸發部11内之毛細結構112之 共同作用，促使冷凝後之工作流體16及時回流至蒸發 部11。在上述過程中，該工作流體16從蒸發部u吸收 熱量到冷凝部12釋放熱量，完成了發熱電子元件與散 熱元件間之熱量交換。藉由這種方式’工作流體16反 復蒸發、冷凝，不斷地吸熱、放熱，從而達到良好之 熱交換之目的。 與習知之迴路熱管相比，上述迴路熱管10中，脈 • 管15之管壁産生之毛細力可抽吸冷凝後之工作流體 16回流至蒸發部1]L進行下次循環，以使該迴路熱管 之抗重力能力較強，可搭配不同之應用條件，解決目 刚迴路熱管抗重力不甚理想之問題。同時，該脈管15 可供工作流體16之儲液與輸送，可提供現有迴路熱管 之補償室之功能，因此可捨棄習知迴路熱管之補償室 結構’從而縮小迴路熱管1〇之體積，節省成本，同時 結構更加簡單。另外，蒸發部11内設置之管筒狀毛細 結構112之基部114與壁部115均與蒸發部11之内壁接 200815725 觸’使蒸發部11内儲存在毛細結構m内之工作流體托 之受熱面積增A ’可有效降低迴路熱管10之熱阻， 另 錢乇細結構112結構簡單，易於量産。 綜上所述’本發明符合發明專利之要件，爰依法 提出專利t請。惟μ所述者僅林發明The vapor line 13 and the liquid line 14 may be made of a flexible material compatible with the working fluid 16, such as Ming, non-steel, plastic, and the like. The working fluid 16 is filled into a circuit formed by the evaporation portion n, the condensation portion 12, the vapor line 13 and the liquid line 14, and the working fluid 16 may be distilled water, methanol, alcohol or a mixture thereof, and the substances have a lower boiling point. And compatible with the vascular tube 15, the liquid line 14 also extends into the condensing portion 12 at the same time. Therefore, when the evaporation portion 1 of the loop heat pipe 1: [absorbs heat, the working fluid 16 therein can be easily It evaporates and flows to the condensation portion 12, and is condensed at the condensation portion 12. The condensed working fluid 16 is returned to the evaporation section for the next cycle by the combined action of the capillary 15 in the liquid line 14 and the capillary structure 112 in the evaporation section 1; Referring to FIG. 4 to FIG. 7 , the vessel 15 is an elongated tube having an outer diameter smaller than the inner diameter of the liquid official line 14 . The vessel 15 is attached to the inner wall of the liquid line 14 and is disposed in the entire liquid line 14 . In length (as shown in Figure )). The vascular tube 15 is woven by a plurality of flexible thin wires 151 (shown in FIG. 6), and the thin wires 151 may be fibers, fiber bundles, copper wires or stainless steel wires, etc., and the blood vessels 15 are hollow, and have _ 敎 敎 敎 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , For example, 2 and liquid pass 9 200815725 channel 153 is available for storage and delivery of working fluid 16. The braided tube wall of the vessel 15 forms a capillary structure and generates capillary forces to urge the working fluid 16 to the direction of the evaporation portion 11. The working fluid 16 in the evaporation portion 11 of the loop heat pipe 10 is evaporated from the heat-generating electronic component into vapor, and the generated vapor is concentrated in the vapor passage 116 in the center of the evaporation portion 11, and flows to the condensation portion 12 through the vapor line 13 in the condensation portion. 12 is condensed into a liquid after exothermic, and the condensed working fluid 16 is caused to flow back to the evaporation portion 11 in time due to the cooperation of the vascular tube 15 in the liquid-body line 14 and the capillary structure 112 in the evaporation portion 11. The working fluid 16 is evaporated u absorbs heat to the condensing portion 12 to release heat, and completes heat exchange between the heat-generating electronic component and the heat-dissipating component. In this way, the working fluid 16 repeatedly evaporates and condenses, continuously absorbs heat and releases heat, thereby achieving good heat exchange. The capillary force generated by the wall of the pulse tube 15 in the above-mentioned loop heat pipe 10 can be sucked and condensed, and the working fluid 16 is returned to the evaporation portion 1]L for the next cycle, so as to make the next cycle. The loop heat pipe has strong anti-gravity capability, and can be used with different application conditions to solve the problem that the heat pipe of the eye circuit is not ideal for gravity. At the same time, the vessel 15 can be used for liquid storage and transportation of the working fluid 16, and can provide existing The function of the compensation chamber of the loop heat pipe can therefore discard the compensation chamber structure of the conventional loop heat pipe, thereby reducing the volume of the loop heat pipe, saving cost, and the structure is simpler. In addition, the tubular capillary structure disposed in the evaporation portion 11 The base portion 114 and the wall portion 115 of the 112 are connected to the inner wall of the evaporation portion 11 to contact the working fluid of the capillary structure m in the evaporation portion 11 Increasing the heat-receiving area A ' can effectively reduce the thermal resistance of the loop heat pipe 10, and the structure of the thin-structured structure 112 is simple and easy to mass-produce. In summary, the invention conforms to the requirements of the invention patent, and the patent is filed according to law. Narrative
Π凡熟悉本案技藝之人士，在爱依本發明精L 作之4效修飾或變化，皆應涵蓋於以下之申請專利範Anyone who is familiar with the craftsmanship of this project should be covered or modified in the following four aspects of the invention.
圍内。 【圖式簡單說明】 圖圖1爲本發明迴路熱管一較佳實施方式之示意 圖2爲圖1所示迴路熱管沿ΙΙ-ΙΙ線之剖視圖。 圖3爲圖1所不迴路熱管沿ΙΙΙ-ΙΙΙ線之剖视圖。 圖4爲圖1所示迴路熱管中圈IV之放大示意圖 圖5爲圖1所不壇路熱管沿V-V線之剖視圖。 圖6爲圖1所示迴路熱管中脈管之主視圖。 圖7爲圖6所示脈管沿νιι_νπ線之剖視圖。 【主要元件符號說明】 蒸發部 11 基部 114 蒸氣通道 116 蒸氣管線 13 脈管 15 中空通道 152 迴路熱管 10 毛細結構 112 壁部 115 冷凝部 12 液體管線 14 細線 151 11 200815725 16 液體通道 153 工作流體Inside. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a preferred embodiment of a loop heat pipe of the present invention. FIG. 2 is a cross-sectional view of the loop heat pipe of FIG. 1 taken along a ΙΙ-ΙΙ line. Figure 3 is a cross-sectional view of the non-circuit heat pipe of Figure 1 taken along the ΙΙΙ-ΙΙΙ line. Figure 4 is an enlarged schematic view of the loop IV of the loop heat pipe shown in Figure 1. Figure 5 is a cross-sectional view of the heat pipe of Figure 1 taken along line V-V. Figure 6 is a front elevational view of the vessel in the loop heat pipe of Figure 1. Figure 7 is a cross-sectional view of the vessel of Figure 6 taken along the line νιι_νπ. [Explanation of main components] Evaporation section 11 Base 114 Vapor channel 116 Vapor line 13 Vessel 15 Hollow channel 152 Loop heat pipe 10 Capillary structure 112 Wall 115 Condensate 12 Liquid line 14 Thin line 151 11 200815725 16 Liquid channel 153 Working fluid
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