TWI510752B - Heat pipe - Google Patents
Heat pipe Download PDFInfo
- Publication number
- TWI510752B TWI510752B TW102131877A TW102131877A TWI510752B TW I510752 B TWI510752 B TW I510752B TW 102131877 A TW102131877 A TW 102131877A TW 102131877 A TW102131877 A TW 102131877A TW I510752 B TWI510752 B TW I510752B
- Authority
- TW
- Taiwan
- Prior art keywords
- wick
- heat pipe
- condensate
- heat
- gap
- Prior art date
Links
- 238000001704 evaporation Methods 0.000 claims description 42
- 230000008020 evaporation Effects 0.000 claims description 42
- 238000009833 condensation Methods 0.000 claims description 22
- 230000005494 condensation Effects 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 21
- 239000011148 porous material Substances 0.000 claims description 11
- 238000009835 boiling Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000012447 hatching Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
本發明係有關於一種散熱器，尤其有關於一種熱管。The present invention relates to a heat sink, and more particularly to a heat pipe.
近代的電子產品運算速度不斷提昇，其所產生的熱量也越來越高，故以往由鋁擠型散熱器及風扇所組成的散熱裝置已不能應付目前運算器的使用需求。尤其現今電子產品的趨勢是把產品越做越小，但也因此限制了散熱的空間。在這兩個重要的因素影響之下，散熱的技術面臨嚴峻的考驗，因此開發出具有更高導熱效能的熱管，以有效地解決現階段的散熱問題，是目前的當務之急。In modern times, the computing speed of electronic products is increasing, and the heat generated by them is getting higher and higher. Therefore, the heat dissipating device composed of aluminum extruded radiators and fans has been unable to cope with the current use of the computing device. In particular, the trend of today's electronic products is to make the products smaller and smaller, but it also limits the space for heat dissipation. Under the influence of these two important factors, the technology of heat dissipation is facing severe challenges. Therefore, it is a top priority to develop a heat pipe with higher thermal conductivity to effectively solve the heat dissipation problem at this stage.
習知的熱管包括一管殼與一吸液芯，其中吸液芯是設置在銅管的內部側壁上，管殼包含一蒸發端與一冷凝端。此外，於管殼內部還包括有冷凝液，此冷凝液例如為水。當管殼用以散熱時，管殼的蒸發端連接一熱源，故位於其中的冷凝液吸收此處的熱量而蒸發為氣體。此時，由於壓力差的關係，冷凝液會流往冷凝端。冷凝液於冷凝端冷卻凝結後進入吸液芯的孔隙中，之後再藉由吸液芯的毛細力而回流至蒸發端。A conventional heat pipe includes a casing and a wick, wherein the wick is disposed on an inner side wall of the copper pipe, and the casing includes an evaporation end and a condensation end. In addition, a condensate is included inside the envelope, such as water. When the envelope is used for heat dissipation, the evaporation end of the envelope is connected to a heat source, so that the condensate located therein absorbs the heat therein and evaporates into a gas. At this time, the condensate flows to the condensation end due to the pressure difference. The condensate is cooled and condensed at the condensation end and then enters the pores of the wick, and then is returned to the evaporation end by the capillary force of the wick.
然而習知的熱管傳熱能力會受到蒸發段徑向傳熱 能力的限制，如果蒸發段徑向熱流密度過大，則吸液芯中冷凝液的迴圈可能受到阻礙，傳熱能力受到限制。當蒸發段熱流密度過大時，吸液芯內液體沸騰，若沸騰產生的氣泡能順利地排出管芯，則傳熱可以增強；否則氣泡將堵塞毛細孔，吸液芯中液體工質迴圈受到破壞，從而吸液芯局部乾涸，使傳熱能力下降。However, the heat transfer capacity of the known heat pipe is subject to radial heat transfer in the evaporation section. The limitation of capacity, if the radial heat flux density of the evaporation section is too large, the circulation of the condensate in the wick may be hindered, and the heat transfer capability is limited. When the heat flux density in the evaporation section is too large, the liquid in the wick will boil. If the bubble generated by boiling can smoothly discharge the die, the heat transfer can be enhanced; otherwise, the bubble will block the capillary pores, and the liquid working fluid circulation in the wick is affected. Destruction, so that the wick is partially dried, reducing the heat transfer capacity.
因此本發明的目的就是在提供一種一種熱管，其包含一管殼、一吸液芯、以及一彈性層。管殼形成一封閉腔體且包含一蒸發端以及一冷凝端。吸液芯緊密貼合於管殼的內表面，其中位於蒸發端內的吸液芯之部份外側與管殼形成至少一間隙。彈性層緊密包覆位於間隙的吸液芯外側，用以阻隔冷凝液穿透至間隙，且當冷凝液冷凝後，帶動吸液芯恢復原狀。當管殼中的冷凝液於蒸發端沸騰時，封閉腔體與至少一間隙形成一壓差，壓差作用下吸液芯向間隙拉伸，吸液芯的毛細孔變大，冷凝液沸騰產生的氣泡從毛細孔排出強化了蒸發端與冷凝端傳熱性，氣泡流向冷凝端放出熱量冷凝為冷凝液，吸液芯在彈性層作用下恢復原狀。It is therefore an object of the present invention to provide a heat pipe comprising a casing, a wick, and an elastomeric layer. The envelope forms a closed cavity and includes an evaporation end and a condensation end. The wick is closely attached to the inner surface of the envelope, wherein at least a portion of the outer side of the wick located in the evaporation end forms at least one gap with the envelope. The elastic layer is tightly wrapped outside the wick of the gap to block the penetration of the condensate into the gap, and when the condensate condenses, the wick is returned to its original state. When the condensate in the shell boils at the evaporation end, the closed cavity forms a pressure difference with at least one gap, and the wick is stretched toward the gap under the pressure difference, the capillary pores of the wick become larger, and the condensate boils. The bubble is discharged from the capillary hole to enhance the heat transfer between the evaporation end and the condensation end, and the bubble flow discharges heat to the condensation end to condense into a condensate, and the wick is restored to the original state under the action of the elastic layer.
依據本發明另一實施例，蒸發端截面積大於冷凝端的截面積。According to another embodiment of the invention, the cross-sectional area of the evaporation end is larger than the cross-sectional area of the condensation end.
依據本發明另一實施例，蒸發端大於管殼其他部分的截面積。According to another embodiment of the invention, the evaporation end is larger than the cross-sectional area of other portions of the envelope.
依據本發明另一實施例，彈性層為水氣阻絕層。According to another embodiment of the invention, the elastic layer is a moisture barrier layer.
依據本發明另一實施例，位於蒸發端內的吸液芯之不與熱源接觸的部份外側與管殼形成至少一間隙。According to another embodiment of the present invention, the outer portion of the wick located in the evaporation end that is not in contact with the heat source forms at least one gap with the envelope.
依據本發明另一實施例，管殼的材質包含銅或鋁。According to another embodiment of the invention, the material of the envelope comprises copper or aluminum.
依據本發明另一實施例，封閉腔體及至少一間隙為真空腔。According to another embodiment of the invention, the enclosed cavity and the at least one gap are vacuum chambers.
依據本發明另一實施例，管殼截面形狀為圓形、長方形或其他多邊形。According to another embodiment of the invention, the cross-sectional shape of the envelope is circular, rectangular or other polygonal shape.
依據本發明另一實施例，冷凝液包含氨、甲醇、乙醇或水。According to another embodiment of the invention, the condensate comprises ammonia, methanol, ethanol or water.
依據本發明另一實施例，吸液芯為一金屬粉末燒結結構。According to another embodiment of the invention, the wick is a metal powder sintered structure.
習知熱管的吸液芯內冷凝液沸騰時，氣泡產生過快而無法從吸液芯的毛細孔順暢排出，從而使熱管傳熱能力下降的問題。本發明為了改善此一現象，設計的熱管能有效改善毛細孔堵塞的問題。本發明之熱管其冷凝液沸騰形成氣態時，吸液芯向間隙拉伸，於是內部之毛細孔就變大。因此，吸液芯內的氣泡得以順利被排除，從而改善了氣泡堵塞毛細孔與熱管傳熱能力下降的問題。When the condensate in the wick of the conventional heat pipe boils, the bubbles are generated too quickly to be smoothly discharged from the capillary holes of the wick, thereby causing a problem that the heat transfer capacity of the heat pipe is lowered. In order to improve this phenomenon, the designed heat pipe can effectively improve the problem of capillary clogging. In the heat pipe of the present invention, when the condensate is boiled to form a gaseous state, the wick is stretched toward the gap, and the internal capillary pores become large. Therefore, the bubbles in the wick are smoothly removed, thereby improving the problem that the bubble clogging capillary and the heat transfer capacity of the heat pipe are lowered.
100‧‧‧熱管100‧‧‧ heat pipe
102‧‧‧管殼102‧‧‧ shell
102’‧‧‧管殼102'‧‧‧ shell
104‧‧‧蒸發端104‧‧‧Evaporation end
108‧‧‧冷凝端108‧‧‧condensing end
110‧‧‧吸液芯110‧‧‧ wick
120‧‧‧封閉腔體120‧‧‧Closed cavity
130‧‧‧間隙130‧‧‧ gap
140‧‧‧彈性層140‧‧‧elastic layer
150‧‧‧方向150‧‧‧ Direction
160‧‧‧方向160‧‧‧ Direction
210‧‧‧方向210‧‧‧ Direction
220‧‧‧方向220‧‧‧ Direction
500‧‧‧熱源500‧‧‧heat source
600‧‧‧散熱器600‧‧‧heatsink
2-2’‧‧‧剖面線2-2’‧‧‧ hatching
3-3’‧‧‧剖面線3-3’‧‧‧ hatching
R‧‧‧不與熱源接觸的部份R‧‧‧Parts not in contact with heat sources
R’‧‧‧不與熱源接觸的部份R’‧‧‧Parts that are not in contact with heat sources
第1圖係繪示本發明之熱管示意圖。Figure 1 is a schematic view of a heat pipe of the present invention.
第2圖係繪示沿第1圖之熱管的剖面線2-2’的剖面圖。Fig. 2 is a cross-sectional view taken along line 2-2' of the heat pipe of Fig. 1.
第3圖係繪示沿第2圖之熱管的剖面線3-3’的剖面圖。Fig. 3 is a cross-sectional view showing a section line 3-3' of the heat pipe taken along the second drawing.
第4圖係繪示本發明之熱管另一實施例剖面圖。Figure 4 is a cross-sectional view showing another embodiment of the heat pipe of the present invention.
以下將以圖式及詳細說明清楚說明本發明之精神，任何所屬技術領域中具有通常知識者在瞭解本發明之較佳實施例後，當可由本發明所教示之技術，加以改變及修飾，其並不脫離本發明之精神與範圍。The spirit and scope of the present invention will be apparent from the following description of the preferred embodiments of the invention. The spirit and scope of the invention are not departed.
為解決習知熱管的吸液芯內液體沸騰時，液體氣泡產生過快而無法從吸液芯的毛細孔順暢排出，從而使熱管傳熱能力下降的問題。本發明之熱管能有效改善上述毛細孔堵塞液體氣泡的問題。請參照第1圖，其係繪示本發明之熱管示意圖。本發明之熱管100具有一管殼102。管殼102包含一蒸發端104以及一冷凝端108。蒸發端104連接一熱源500，用以吸收熱源500之熱量。冷凝端108連接一散熱器600，用以將蒸發端104傳來的熱能排除。管殼102的材質一般為銅或者是鋁，使用銅材質的原因是銅具有較佳傳熱效果，而使用鋁則能降低成本。In order to solve the boiling of the liquid in the wick of the conventional heat pipe, the liquid bubble is generated too fast to be smoothly discharged from the capillary hole of the wick, thereby reducing the heat transfer capability of the heat pipe. The heat pipe of the present invention can effectively improve the problem that the above-mentioned capillary pores block liquid bubbles. Please refer to FIG. 1 , which is a schematic view of a heat pipe of the present invention. The heat pipe 100 of the present invention has a casing 102. The envelope 102 includes an evaporation end 104 and a condensation end 108. The evaporation end 104 is connected to a heat source 500 for absorbing the heat of the heat source 500. The condensing end 108 is connected to a heat sink 600 for removing thermal energy from the evaporation end 104. The material of the bulb 102 is generally copper or aluminum. The reason for using copper is that copper has a better heat transfer effect, and the use of aluminum can reduce the cost.
應注意的是，以上列舉之管殼102的材質選用僅為例示，非用以限定本發明，本發明所屬技術領域中具有通常知識者應視實際需要，選用適當之材質。It should be noted that the materials of the above-mentioned package 102 are merely exemplified and are not intended to limit the present invention. Those having ordinary knowledge in the technical field of the present invention should select appropriate materials according to actual needs.
請參照第2圖，其繪示沿第1圖之熱管的剖面線2-2’的剖面圖。本發明之熱管100包含一管殼102、一吸液芯110、以及一彈性層140。管殼102形成一封閉腔體120且包含一蒸發端104以及一冷凝端108。吸液芯110緊密貼 合於管殼102的內表面，其中位於蒸發端104內的吸液芯110之部份外側與管殼102形成至少一間隙130。彈性層140緊密包覆位於間隙130的吸液芯110外側，用以阻隔冷凝液穿透至間隙130，且當冷凝液冷凝後，帶動吸液芯110恢復原狀。當管殼102中的冷凝液於蒸發端104沸騰時，封閉腔體120與至少一間隙130形成一壓差，壓差作用下吸液芯110向間隙130拉伸，吸液芯110的毛細孔變大，冷凝液沸騰產生的氣泡從毛細孔排出強化了蒸發端104(見第1圖)與冷凝端108(見第1圖)傳熱性，氣泡流向冷凝端108放出熱量冷凝為冷凝液，吸液芯110在彈性層140作用下恢復原狀。在本案之一實施例中，蒸發端104的截面積大於冷凝端108的截面積。在本案之另一實施例中，蒸發端104的截面積大於管殼102其他部分的截面積。管殼102的封閉腔體120內置入一冷凝液。吸液芯110位於封閉腔體120之內側，藉以吸收及傳遞冷凝液。冷凝液藉其氣液相變化以吸收或釋放熱能，將熱能從蒸發端104傳遞至冷凝端108，並在冷凝後回流至蒸發端104再次吸收熱能。有關於散熱機制，之後會有更加詳細的說明。冷凝液可以是氨、甲醇、乙醇或水，因其容易取得，且兼具成本低、流動性佳、散熱能力好等優點，固列舉以上材質，非用以限定本發明。Referring to Figure 2, there is shown a cross-sectional view taken along section line 2-2' of the heat pipe of Figure 1. The heat pipe 100 of the present invention comprises a casing 102, a wick 110, and an elastic layer 140. The bulb 102 forms a closed cavity 120 and includes an evaporation end 104 and a condensation end 108. The wick 110 is closely attached The inner surface of the envelope 102 is integrated, and a portion of the outer side of the wick 110 located in the evaporation end 104 forms at least one gap 130 with the envelope 102. The elastic layer 140 is tightly wrapped outside the wick 110 of the gap 130 to block the penetration of the condensate into the gap 130, and when the condensate is condensed, the wick 110 is brought back to its original state. When the condensate in the envelope 102 boils at the evaporation end 104, the closed cavity 120 forms a pressure difference with the at least one gap 130, and the wick 110 is stretched toward the gap 130 by the differential pressure, and the capillary of the wick 110 When it becomes larger, the bubbles generated by the boiling of the condensate are discharged from the capillary pores to enhance the heat transfer of the evaporation end 104 (see Fig. 1) and the condensation end 108 (see Fig. 1), and the bubble flow to the condensation end 108 to release heat and condense into condensate. The wick 110 is restored to its original shape by the elastic layer 140. In one embodiment of the present invention, the cross-sectional area of the evaporation end 104 is greater than the cross-sectional area of the condensation end 108. In another embodiment of the present invention, the cross-sectional area of the evaporation end 104 is greater than the cross-sectional area of other portions of the envelope 102. The closed cavity 120 of the envelope 102 incorporates a condensate. The wick 110 is located inside the closed cavity 120 to absorb and transfer condensate. The condensate is changed by its gas-liquid phase to absorb or release heat energy, and the heat energy is transferred from the evaporation end 104 to the condensation end 108, and after condensation, it is refluxed to the evaporation end 104 to absorb the heat energy again. For a more detailed explanation of the heat dissipation mechanism. The condensate may be ammonia, methanol, ethanol or water, and is easy to obtain, and has the advantages of low cost, good fluidity, and good heat dissipation capability. The above materials are not listed to limit the present invention.
請同時參考第1圖及第2圖。當本發明之熱管100的蒸發端104，接觸一熱源500時，熱能會由熱源500傳導進入蒸發端104，再由蒸發端104傳導進入位於蒸發端104 的液態冷凝液，液態冷凝液吸收熱量之後，進行相變化，由液態變為氣態，形成氣態冷凝液。Please refer to both Figure 1 and Figure 2. When the evaporation end 104 of the heat pipe 100 of the present invention contacts a heat source 500, heat energy is conducted from the heat source 500 into the evaporation end 104, and then conducted from the evaporation end 104 to the evaporation end 104. The liquid condensate, after the liquid condensate absorbs heat, undergoes a phase change from a liquid state to a gaseous state to form a gaseous condensate.
請參考第2圖。蒸發端104在吸收熱量之後，液態冷凝液沸騰形成氣態冷凝液，並在吸液芯110產生液態氣泡。由於沸騰現象造成封閉腔體120壓力增加，吸液芯110循方向210向間隙130拉伸，毛細孔就變大，於是氣泡得以較順利的排除。當沸騰產生的氣泡順利排出，不存在壓差時，彈性層140以及吸液芯110便恢復之前的形狀。彈性層140為水氣阻絕層，因此液態冷凝液無法穿越到間隙130。在習知的熱管結構中，吸液芯的毛細孔的體積無法變大，因此氣泡產生過快時常無法順利排出，影響導熱能力。蒸發端104與冷凝端108之間具有微小的壓力差，使得氣態冷凝液會沿著方向150流動，將熱量帶至冷凝端108受到冷凝，再沿著方向160回到蒸發端104再進行吸熱，形成熱循環。Please refer to Figure 2. After the evaporation end 104 absorbs heat, the liquid condensate boils to form a gaseous condensate, and a liquid bubble is generated in the wick 110. As the pressure of the closed cavity 120 increases due to the boiling phenomenon, the wick 110 is stretched toward the gap 130 in the direction 210, and the capillary pores become larger, so that the bubbles can be smoothly eliminated. When the bubbles generated by boiling are smoothly discharged, and there is no pressure difference, the elastic layer 140 and the wick 110 are restored to the previous shape. The elastic layer 140 is a water vapor barrier so that the liquid condensate cannot pass through the gap 130. In the conventional heat pipe structure, the volume of the capillary hole of the wick cannot be increased, and therefore, when the bubble is generated too quickly, the bubble cannot be smoothly discharged, which affects the heat conductivity. There is a slight pressure difference between the evaporation end 104 and the condensation end 108, so that the gaseous condensate will flow in the direction 150, bring the heat to the condensation end 108 to be condensed, and then return to the evaporation end 104 in the direction 160 to absorb the heat. A thermal cycle is formed.
管殼102內的封閉腔體120及間隙130為一真空腔室，因此不但可以降低冷凝液的氣化點，使其容易進行相變化，加速整個散熱機制。另外，還能避免其他氣體干擾氣態冷凝液對流以及散佈的現象，使氣態冷凝液能快速散佈至冷凝端108。上述真空腔室一般指的是粗略真空，壓力在760~1托爾(Torr)的範圍，所屬技術領域中具有通常知識者亦可視實際需要抽成所需的真空程度。The closed cavity 120 and the gap 130 in the bulb 102 are a vacuum chamber, so that not only the vaporization point of the condensate can be reduced, but also the phase change is facilitated, and the entire heat dissipation mechanism is accelerated. In addition, other gases can be prevented from interfering with the convection and dispersion of the gaseous condensate, so that the gaseous condensate can be quickly dispersed to the condensation end 108. The vacuum chamber generally refers to a rough vacuum, and the pressure is in the range of 760 to 1 Torr. Those skilled in the art can also draw the required degree of vacuum according to actual needs.
請參考第3圖，其繪示沿第2圖之熱管的剖面線3-3’的剖面圖。由圖上可看到管殼102截面形狀為圓形。一 般圓形之管殼102係以吹製法製成，其成本低廉，製造快速，因此廣受業界使用。本實施例中吸液芯110為金屬粉末燒結結構，因其製作良率高且穩定，因此被業界所接受。由本圖可以看出，位於蒸發端104的管殼102之不與熱源接觸的部份R與吸液芯110之間形成至少一間隙130。因此與熱源500所接觸之管殼102，其內部的吸液芯110與管殼102直接接觸，使得吸液芯110內部之液態冷凝液得以有效地吸收來自熱源500的熱量。當液態冷凝液沸騰形成氣態冷凝液，並在吸液芯110產生液態氣泡。由於沸騰現象造成封閉腔體120壓力增加，吸液芯110循方向210向間隙130拉伸，毛細孔就變大，於是氣泡得以較順利的排除。當沸騰產生的氣泡順利排出，不存在壓差時，彈性層140以及吸液芯110便恢復之前的形狀。彈性層140為水氣阻絕層，因此液態冷凝液無法穿越到間隙130。Please refer to Fig. 3, which is a cross-sectional view taken along line 3-3' of the heat pipe of Fig. 2. It can be seen from the figure that the cross-sectional shape of the envelope 102 is circular. One The generally circular envelope 102 is made by a blow molding method, and is widely used in the industry because of its low cost and rapid manufacturing. In the present embodiment, the wick 110 is a metal powder sintered structure, which is accepted by the industry because of its high yield and stability. As can be seen from the figure, at least one gap 130 is formed between the portion R of the envelope 102 at the evaporation end 104 that is not in contact with the heat source and the wick 110. Therefore, the inner wick 110 of the package 102 in contact with the heat source 500 is in direct contact with the package 102, so that the liquid condensate inside the wick 110 can effectively absorb the heat from the heat source 500. When the liquid condensate boils to form a gaseous condensate, liquid bubbles are generated in the wick 110. As the pressure of the closed cavity 120 increases due to the boiling phenomenon, the wick 110 is stretched toward the gap 130 in the direction 210, and the capillary pores become larger, so that the bubbles can be smoothly eliminated. When the bubbles generated by boiling are smoothly discharged, and there is no pressure difference, the elastic layer 140 and the wick 110 are restored to the previous shape. The elastic layer 140 is a water vapor barrier so that the liquid condensate cannot pass through the gap 130.
應注意的是，以上列舉管殼102截面形狀為圓形之設計僅為例示，非用以限定本發明，本發明所屬技術領域中具有通常知識者應視實際需要，選用適當之設計安排。It should be noted that the above-mentioned design of the cross-sectional shape of the package 102 is circular, and is not intended to limit the present invention. Those having ordinary knowledge in the technical field of the present invention should select an appropriate design arrangement according to actual needs.
請參考第4圖，第4圖係繪示本發明之熱管另一實施例剖面圖。由圖上可看到管殼102’截面形狀為長方形，一般長方形之管殼102’截面，係為了能與方形之熱源500做緊密接觸，以達到最佳的傳熱效果。其管殼102’亦可視需求製成多邊形。位於蒸發端104的管殼102之不與熱源接觸的部份R’內側與吸液芯110之間形成至少一間隙130。吸液芯110內部之液態冷凝液吸收來自熱源500的熱 量之後，液態冷凝液沸騰形成氣態冷凝液，並在吸液芯110產生液態氣泡。由於沸騰現象造成封閉腔體120壓力增加，吸液芯110循方向220向間隙130拉伸，毛細孔就變大，於是氣泡得以較順利的排除。當沸騰產生的氣泡順利排出，不存在壓差時，彈性層140以及吸液芯110便恢復之前的形狀。彈性層140為水氣阻絕層，因此液態冷凝液無法穿越到間隙130。Please refer to FIG. 4, which is a cross-sectional view showing another embodiment of the heat pipe of the present invention. It can be seen from the figure that the cross-sectional shape of the envelope 102' is a rectangle, and the generally rectangular shell 102' section is in close contact with the square heat source 500 for optimum heat transfer. The envelope 102' can also be made into a polygon as desired. At least one gap 130 is formed between the inside of the portion R' of the envelope 102 of the evaporation end 104 that is not in contact with the heat source and the wick 110. The liquid condensate inside the wick 110 absorbs heat from the heat source 500 After the amount, the liquid condensate boils to form a gaseous condensate, and liquid bubbles are generated in the wick 110. As the pressure of the closed cavity 120 increases due to boiling, the wick 110 is stretched toward the gap 130 in the direction 220, and the capillary pores become larger, so that the bubbles can be smoothly eliminated. When the bubbles generated by boiling are smoothly discharged, and there is no pressure difference, the elastic layer 140 and the wick 110 are restored to the previous shape. The elastic layer 140 is a water vapor barrier so that the liquid condensate cannot pass through the gap 130.
習知熱管的吸液芯內冷凝液沸騰時，氣泡產生過快而無法從吸液芯的毛細孔順暢排出，從而使熱管傳熱能力下降的問題。本發明為了改善此一現象，設計的熱管能有效改善毛細孔堵塞的問題。本發明之熱管其冷凝液沸騰形成氣態時，吸液芯向間隙拉伸，於是內部之毛細孔就變大。因此，吸液芯內的氣泡得以順利被排除，從而改善了氣泡堵塞毛細孔與熱管傳熱能力下降的問題。When the condensate in the wick of the conventional heat pipe boils, the bubbles are generated too quickly to be smoothly discharged from the capillary holes of the wick, thereby causing a problem that the heat transfer capacity of the heat pipe is lowered. In order to improve this phenomenon, the designed heat pipe can effectively improve the problem of capillary clogging. In the heat pipe of the present invention, when the condensate is boiled to form a gaseous state, the wick is stretched toward the gap, and the internal capillary pores become large. Therefore, the bubbles in the wick are smoothly removed, thereby improving the problem that the bubble clogging capillary and the heat transfer capacity of the heat pipe are lowered.
100‧‧‧熱管100‧‧‧ heat pipe
102‧‧‧管殼102‧‧‧ shell
104‧‧‧冷凝端104‧‧‧condensing end
108‧‧‧蒸發端108‧‧‧Evaporation end
110‧‧‧吸液芯110‧‧‧ wick
120‧‧‧封閉腔體120‧‧‧Closed cavity
130‧‧‧間隙130‧‧‧ gap
140‧‧‧彈性層140‧‧‧elastic layer
150‧‧‧方向150‧‧‧ Direction
160‧‧‧方向160‧‧‧ Direction
210‧‧‧方向210‧‧‧ Direction
3-3’‧‧‧剖面線3-3’‧‧‧ hatching
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102131877A TWI510752B (en) | 2013-09-04 | 2013-09-04 | Heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102131877A TWI510752B (en) | 2013-09-04 | 2013-09-04 | Heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201510458A TW201510458A (en) | 2015-03-16 |
| TWI510752B true TWI510752B (en) | 2015-12-01 |
Family
ID=53186673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102131877A TWI510752B (en) | 2013-09-04 | 2013-09-04 | Heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI510752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114440678B (en) * | 2022-02-17 | 2025-07-25 | 郭鹏杰 | Multi-dimensional heat pipe, preparation method and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063197A1 (en) * | 2000-02-21 | 2001-08-30 | Yoo-O T & C Corporation Limited | Heat-exchange pipe |
| JP2007101079A (en) * | 2005-10-05 | 2007-04-19 | Fuji Electric Holdings Co Ltd | Heat pipe type cooling system |
| TW201314161A (en) * | 2011-09-30 | 2013-04-01 | Foxconn Tech Co Ltd | Heat pipe |
-
2013
- 2013-09-04 TW TW102131877A patent/TWI510752B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063197A1 (en) * | 2000-02-21 | 2001-08-30 | Yoo-O T & C Corporation Limited | Heat-exchange pipe |
| JP2007101079A (en) * | 2005-10-05 | 2007-04-19 | Fuji Electric Holdings Co Ltd | Heat pipe type cooling system |
| TW201314161A (en) * | 2011-09-30 | 2013-04-01 | Foxconn Tech Co Ltd | Heat pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201510458A (en) | 2015-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103398613B (en) | Vapor chamber and manufacturing method thereof | |
| US7293601B2 (en) | Thermoduct | |
| CN104422320B (en) | Heat pipe | |
| CN201844724U (en) | Flat-plate soaking plate | |
| CN101762194A (en) | Evaporator and loop type heat pipe applying same | |
| CN203454875U (en) | Vapor chamber | |
| CN104713395B (en) | High resistance to pressure flat-plate heat pipe and processing method thereof | |
| CN105716461A (en) | Temperature equalizing plate with gradient porous capillary cores in plane direction and manufacturing method for temperature equalizing plate | |
| WO2008101384A1 (en) | Heat transfer device and manufacturing method thereof | |
| CN102202488A (en) | Heat-pipe heat radiation apparatus | |
| CN110537067A (en) | High-performance electronic cooling system | |
| CN101566748A (en) | Radiating module and backlight module adopting same | |
| CN102345991A (en) | Heat pipe type radiator | |
| CN201828175U (en) | heat pipe radiator | |
| CN201892459U (en) | Thermal conduction device with capillary microstructure | |
| TWI530655B (en) | Plate type heat pipe | |
| TWI510752B (en) | Heat pipe | |
| CN205425915U (en) | Flat plate heat pipe radiator | |
| US20190154352A1 (en) | Loop heat pipe structure | |
| US9476652B2 (en) | Thin heat pipe structure having enlarged condensing section | |
| TWI427255B (en) | Evaporator and loop type heat pipe employing it | |
| CN103185478B (en) | Flat hot pipe | |
| CN202127010U (en) | Heat pipe | |
| CN202024639U (en) | Heat pipe | |
| CN2814669Y (en) | heat sink |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |