技术领域technical field
本发明涉及微电子器件或智能手机的散热冷却技术领域，具体为一种无吸液芯超薄热管装置。The invention relates to the technical field of heat dissipation and cooling of microelectronic devices or smart phones, in particular to an ultra-thin heat pipe device without a liquid-absorbing core.
背景技术Background technique
近年来，随着技术的快速发展，各种信息通讯产品正以前所未有的速度实现高度集成化和微小型化，直接导致其工作热负荷和单位面积发热量的显著增加，严重影响整个系统的安全可靠性，缩短产品使用寿命，并成为制约其发展的重要瓶颈。以智能手机为例，相对于电脑散热而言，其散热空间尺寸大幅减小，散热条件更加困难，且对散热装置的便携性也有更大的要求。而超薄热管具有体积小、重量轻和导热率高的特点，为现代电子元件设备(特别是空间结构高度紧凑的智能手机)的散热提供了一种有效的手段。但是，如何在降低热管厚度的同时维持其高导热性能，是目前超薄热管研究中一个亟待解决的难题。在传统的超薄热管中，吸液芯结构是其关键的组成部分，是实现热管有效工作的重要前提。如公开号为103940274A的专利提出了一种腔内含有沟槽部和粉末烧结部的超薄热管，轴向延伸的沟槽与其上附着的金属网通过烧结结合成一体，不仅热管尺寸能够大幅减小，同时亦能够保证良好的导热效率及稳定性。但是，该种复合吸液芯结构也将提高超薄热管制造工艺的复杂性和成本，而且吸液芯结构不允许热管本身产生一定的形变，因此限制了其应用领域和尺寸的进一步减小。Lewis等在《Science Bulletin》(2015，60(7)∶701-706)上发表的“Microfabricated Ultra-thin All-polymer Thermal Ground Planes”一文提出了一种使用高分子材料制作的柔性超薄热管，并通过光刻技术在其表面制作出柱状阵列实现了吸液芯结构的功能，所制作的热管厚度仅为0.3mm,并具有良好的传热性能和烧干特性。但考虑工艺成本和传热性能的更大提升，寻找或采用其它更加简易实用的方法来实现吸液芯结构的功能，在推广超薄热管技术方面具有很高的潜在应用价值。In recent years, with the rapid development of technology, various information and communication products are becoming highly integrated and miniaturized at an unprecedented speed, which directly leads to a significant increase in their working heat load and heat generation per unit area, seriously affecting the safety of the entire system Reliability shortens the service life of products and becomes an important bottleneck restricting its development. Taking smartphones as an example, compared with computer cooling, the size of the cooling space is greatly reduced, the cooling conditions are more difficult, and there are greater requirements for the portability of the cooling device. The ultra-thin heat pipe has the characteristics of small size, light weight and high thermal conductivity, which provides an effective means for the heat dissipation of modern electronic components and equipment (especially smart phones with highly compact space structure). However, how to reduce the thickness of the heat pipe while maintaining its high thermal conductivity is an urgent problem to be solved in the current research on ultra-thin heat pipes. In the traditional ultra-thin heat pipe, the liquid-absorbing core structure is its key component and an important prerequisite for the effective work of the heat pipe. For example, the patent with the publication number of 103940274A proposes an ultra-thin heat pipe with a groove part and a powder sintered part in the cavity. The axially extending groove and the metal mesh attached to it are integrated by sintering. Small, but also can ensure good thermal efficiency and stability. However, this kind of composite liquid-absorbing core structure will also increase the complexity and cost of the ultra-thin heat pipe manufacturing process, and the liquid-absorbing core structure does not allow certain deformation of the heat pipe itself, thus limiting its application field and further reducing its size. The article "Microfabricated Ultra-thin All-polymer Thermal Ground Planes" published by Lewis et al. in "Science Bulletin" (2015, 60(7): 701-706) proposes a flexible ultra-thin heat pipe made of polymer materials. And the columnar array is made on its surface by photolithography technology to realize the function of the liquid-absorbing core structure. The thickness of the manufactured heat pipe is only 0.3mm, and it has good heat transfer performance and drying characteristics. However, considering the greater improvement of process cost and heat transfer performance, finding or adopting other simpler and more practical methods to realize the function of the liquid-absorbing core structure has high potential application value in promoting ultra-thin heat pipe technology.
发明内容Contents of the invention
针对现有技术中存在的不足，本发明提供了一种无吸液芯超薄热管装置，通过自润湿工质在超薄热管内独特的相变循环运动实现热管的有效运行，克服了传统超薄热管需复杂吸液芯结构的限制，使其能更好的应用于对智能手机、智能手表等微电子器件的散热冷却。Aiming at the deficiencies in the prior art, the present invention provides an ultra-thin heat pipe device without a liquid-absorbing core, which realizes the effective operation of the heat pipe through the unique phase-change cycle motion of the self-wetting working fluid in the ultra-thin heat pipe, overcoming the traditional Ultra-thin heat pipes require complex liquid-absorbing core structures, so that they can be better applied to heat dissipation and cooling of microelectronic devices such as smartphones and smart watches.
本发明是通过以下技术手段实现上述技术目的。The present invention realizes the above-mentioned technical purpose through the following technical means.
一种无吸液芯超薄热管装置,其特征在于，包括热管管壳，工质，An ultra-thin heat pipe device without a liquid-absorbing core, characterized in that it includes a heat pipe shell, a working fluid,
所述热管管壳为封闭壳体，包括蒸发段，绝热段，冷凝段；The heat pipe shell is a closed shell, including an evaporation section, an adiabatic section, and a condensation section;
所述热管管壳在冷凝段的侧表面开有抽真空/充注液孔；The heat pipe shell has a vacuum/fill liquid hole on the side surface of the condensation section;
所述蒸发段和冷凝段，包括亲水通道；所述绝热段包括亲水通道，疏水通道；The evaporating section and the condensing section include a hydrophilic channel; the adiabatic section includes a hydrophilic channel and a hydrophobic channel;
所述蒸发段、绝热段和冷凝段的交界处存在亲水表面区域向疏水表面区域的过渡区，过渡区内热管管壳的内壁面为亲疏水梯度能表面，即工质在热管管壳的内壁面上的接触角由小变大呈梯度变化，热管管壳内壁面由亲水表面区域变成疏水亲水表面区域。There is a transition zone from the hydrophilic surface area to the hydrophobic surface area at the junction of the evaporation section, the heat insulation section and the condensation section. The contact angle on the inner wall surface changes gradually from small to large, and the inner wall surface of the heat pipe shell changes from a hydrophilic surface area to a hydrophobic and hydrophilic surface area.
所述绝热段分为三个通道，左右对称两侧通道均为亲水通道，中间通道为单个疏水通道或为若干个间隔分布的亲水通道和疏水通道的组合；The heat insulation section is divided into three channels, the left and right symmetrical channels are all hydrophilic channels, and the middle channel is a single hydrophobic channel or a combination of several hydrophilic channels and hydrophobic channels distributed at intervals;
所述绝热段的亲水通道、疏水通道沿长度方向贯穿绝热段；The hydrophilic channel and the hydrophobic channel of the thermal insulation section run through the thermal insulation section along the length direction;
所述亲水通道通过蒸发段、绝热段、冷凝段相互连通。The hydrophilic channel communicates with each other through the evaporation section, the heat insulation section and the condensation section.
所述热管管壳的材料为易加工塑形、导热性能强、耐热性和气密性好的金属材料或高分子材料。The material of the heat pipe shell is a metal material or polymer material that is easy to process and shape, has strong thermal conductivity, good heat resistance and air tightness.
所述热管管壳，在为金属材料的热管管壳的上下表面上制作相互对应的亲水表面区域、疏水表面区域从而获得亲水通道、疏水通道；或在热管管壳内部的上下表面上添加涂层制作相互对应的亲水表面区域、疏水表面区域从而获得亲水通道、疏水通道；其中，疏水通道作为热管管内工质的气相输运空间，亲水通道则是工质的液相回流空间。In the heat pipe shell, on the upper and lower surfaces of the heat pipe shell made of metal materials, corresponding hydrophilic surface areas and hydrophobic surface areas are made to obtain hydrophilic channels and hydrophobic channels; or on the upper and lower surfaces inside the heat pipe shell, add The coating is made of hydrophilic surface area and hydrophobic surface area corresponding to each other to obtain hydrophilic channel and hydrophobic channel; among them, the hydrophobic channel is used as the gas phase transport space of the working medium in the heat pipe, and the hydrophilic channel is the liquid phase return space of the working medium .
所述工质为自润湿工质，自润湿工质具有的逆Marangani效应可使其自发的从热管的冷凝段回流到蒸发段，完成工质的相变循环运动。亲疏水通道的构建和自润湿工质的使用，使超薄热管在无需吸液芯结构的情况下即可实现有效运行；The working fluid is a self-wetting working fluid, and the reverse Marangani effect of the self-wetting working fluid can make it spontaneously flow back from the condensation section of the heat pipe to the evaporating section, completing the phase change cycle movement of the working fluid. The construction of hydrophilic and hydrophobic channels and the use of self-wetting working fluid enable the ultra-thin heat pipe to operate effectively without the need for a liquid-absorbing core structure;
所述涂层，在亲水表面区域使用纳米SiO2亲水涂层材料，在疏水表面区域，使用石墨膜或有自洁特性的有机硅树脂类纳米涂料或氟碳型纳米涂料。The coating uses nano-SiO2 hydrophilic coating material in the hydrophilic surface area, and uses graphite film or self-cleaning silicone resin nano-coating or fluorocarbon nano-coating in the hydrophobic surface area.
所述绝热段中间通道，亲水通道和疏水通道依次间隔的通道宽度比为1∶1或1∶2。In the middle channel of the thermal insulation section, the channel width ratio between the hydrophilic channel and the hydrophobic channel is 1:1 or 1:2.
所述热管管壳的横截面形状为梯形、矩形或三角形。The cross-sectional shape of the heat pipe shell is trapezoidal, rectangular or triangular.
在制作无吸液芯超薄热管装置时，将带有间隔分布的亲水表面区域和疏水表面区域的两块金属薄板或高分子材料薄膜，通过银焊、胶结或其他相关工艺将对称的两块薄板在接合连接为一体。或者在封闭的热管管壳内壁面上直接制作出亲水表面区域和疏水表面区域，并通过压扁工艺将其制作为超薄热管。When making an ultra-thin heat pipe device without a liquid-absorbing core, two metal sheets or polymer material films with a hydrophilic surface area and a hydrophobic surface area distributed at intervals are symmetrically connected by silver welding, bonding or other related processes. The thin plates are joined together as a whole. Alternatively, the hydrophilic surface area and the hydrophobic surface area are directly manufactured on the inner wall of the closed heat pipe shell, and are manufactured into an ultra-thin heat pipe through a flattening process.
本发明相对于现有技术，具有如下优点和效果：Compared with the prior art, the present invention has the following advantages and effects:
通过使用自润湿液体和在热管管壳内壁面上构建亲水表面区域和疏水表面区域，所制作的超薄热管装置在无需吸液芯结构的情况下就可以实现有效工作，可极大地优化生产工艺并有效的降低成本。该装置由于没有吸液芯结构，不仅可以使热管的整体厚度更薄，且较传统超薄热管具有更大的汽相输运空间，从而提高管内工质的蒸汽流动极限，降低沿热管长度方向的温度梯度。同时，所用自润湿工质能够自发的从冷凝段回流到蒸发段，该特性可以显著提高超薄热管的烧干极限，弥补微小型热管作为高效传热器件时在工作性能方面的不足。所制作的无吸液芯超薄热管可以由金属或高分子材料加工制作，能够更好的满足智能手表、智能手机或其它移动设备等多种应用需求，并有效保障高功率微电子器件的使用温度维持在安全范围内。因此，本发明在降低超薄热管厚度的同时可有效保证其工作性能，装置整体结构更加简单，具有可靠性强、制作成本低、应用范围广等优点。By using a self-wetting liquid and constructing a hydrophilic surface area and a hydrophobic surface area on the inner wall of the heat pipe shell, the fabricated ultra-thin heat pipe device can work effectively without a wick structure, which can be greatly optimized production process and effectively reduce costs. Since the device does not have a liquid-absorbing core structure, it can not only make the overall thickness of the heat pipe thinner, but also has a larger space for vapor phase transport than traditional ultra-thin heat pipes, thereby increasing the vapor flow limit of the working medium in the tube and reducing the temperature along the length of the heat pipe. temperature gradient. At the same time, the self-wetting working fluid used can spontaneously flow back from the condensation section to the evaporation section. This feature can significantly improve the dry-out limit of the ultra-thin heat pipe, and make up for the lack of working performance of the micro-miniature heat pipe as an efficient heat transfer device. The produced ultra-thin heat pipe without a liquid-absorbing core can be processed by metal or polymer materials, which can better meet the needs of various applications such as smart watches, smart phones or other mobile devices, and effectively guarantee the use of high-power microelectronic devices The temperature is maintained within a safe range. Therefore, the present invention can effectively ensure its working performance while reducing the thickness of the ultra-thin heat pipe.
附图说明Description of drawings
图1为本发明一种无吸液芯超薄热管装置的结构剖面示意图。FIG. 1 is a schematic cross-sectional view of an ultra-thin heat pipe device without a liquid-absorbing core according to the present invention.
图2为本发明一种无吸液芯超薄热管装置的绝热段的结构示意图。Fig. 2 is a structural schematic diagram of an adiabatic section of an ultra-thin heat pipe device without a liquid-absorbent core according to the present invention.
图3为本发明中间通道亲疏水通道宽度比为1∶1的绝热段结构示意图。Fig. 3 is a schematic diagram of the structure of the heat insulation section in the middle channel of the present invention with a width ratio of hydrophilic and hydrophobic channels of 1:1.
图4为本发明中间通道亲疏水通道宽度比为1∶2的绝热段结构示意图。Fig. 4 is a schematic diagram of the structure of the heat insulation section in the middle channel of the present invention with a width ratio of hydrophilic and hydrophobic channels of 1:2.
其中，1、蒸发段，2、绝热段，3、冷凝段，4、抽真空/充注液孔，5、疏水表面区域，6、亲水表面区域，7、亲水通道，8、疏水通道，9、热管管壳。Among them, 1. Evaporation section, 2. Adiabatic section, 3. Condensation section, 4. Vacuumizing/filling liquid hole, 5. Hydrophobic surface area, 6. Hydrophilic surface area, 7. Hydrophilic channel, 8. Hydrophobic channel , 9, heat pipe shell.
具体实施方式detailed description
下面结合具体实施方式及附图对本发明作进一步详细的描述，但本发明的实施方式不限于此。The present invention will be described in further detail below in conjunction with specific embodiments and drawings, but the embodiments of the present invention are not limited thereto.
一种无吸液芯超薄热管,其特征在于，包括热管管壳9，工质，An ultra-thin heat pipe without a liquid-absorbing core is characterized in that it includes a heat pipe shell 9, a working fluid,
所述热管管壳9为封闭壳体，包括，蒸发段1，绝热段2，冷凝段3；The heat pipe shell 9 is a closed shell, including an evaporation section 1, an adiabatic section 2, and a condensation section 3;
所述热管管壳9在冷凝段3的侧表面开有抽真空/充注液孔4；The heat pipe shell 9 has a vacuum/fill liquid hole 4 on the side surface of the condensation section 3;
所述蒸发段1和冷凝段3，包括亲水通道7；绝热段2包括亲水通道7，疏水通道8；The evaporation section 1 and the condensation section 3 include a hydrophilic channel 7; the adiabatic section 2 includes a hydrophilic channel 7 and a hydrophobic channel 8;
所述蒸发段1、绝热段2和冷凝段3的交界处存在亲水表面区域6向疏水表面区域5的过渡区，过渡区内热管管壳9的内壁面为亲疏水梯度能表面，即工质在热管管壳9的内壁面上的接触角由小变大呈梯度变化，热管管壳9内壁面由亲水表面区域6变成疏水亲水表面区域5。There is a transition zone from the hydrophilic surface area 6 to the hydrophobic surface area 5 at the junction of the evaporation section 1, the adiabatic section 2, and the condensation section 3, and the inner wall surface of the heat pipe shell 9 in the transition zone is a hydrophilic-hydrophobic gradient energy surface, i.e. The contact angle of the substance on the inner wall surface of the heat pipe shell 9 changes gradually from small to large, and the inner wall surface of the heat pipe shell 9 changes from the hydrophilic surface area 6 to the hydrophobic and hydrophilic surface area 5 .
所述绝热段2分为三个通道，左右对称两侧通道均为亲水通道7，中间通道为单个疏水通道8或若干个间隔分布的亲水通道7和疏水通道8；The heat insulation section 2 is divided into three channels, the left and right symmetrical channels are all hydrophilic channels 7, and the middle channel is a single hydrophobic channel 8 or several hydrophilic channels 7 and hydrophobic channels 8 distributed at intervals;
所述绝热段2的亲水通道7、疏水通道8沿长度方向贯穿绝热段2；The hydrophilic channel 7 and the hydrophobic channel 8 of the thermal insulation section 2 run through the thermal insulation section 2 along the length direction;
所述亲水通道7通过蒸发段1、绝热段2、冷凝段3相互连通。The hydrophilic channel 7 communicates with each other through the evaporating section 1 , the adiabatic section 2 and the condensing section 3 .
所述热管管壳9的材料为易加工塑形、导热性能强、耐热性和气密性好的金属材料或高分子材料。The material of the heat pipe shell 9 is a metal material or polymer material that is easy to process and shape, has strong thermal conductivity, good heat resistance and air tightness.
所述热管管壳9，通过化学方法在为金属材料的热管管壳9的上下表面上制作相互对应的亲水表面区域6、疏水表面区域5从而获得亲水通道7、疏水通道8；所述热管管壳9，通过物理方法在热管管壳9的上下表面上添加涂层制作相互对应的亲水表面区域6、疏水表面区域5从而获得亲水通道7、疏水通道8，其中，疏水通道8作为热管管内工质的气相输运空间，亲水通道7则是工质的液相回流空间。The heat pipe shell 9 is made of a hydrophilic surface area 6 and a hydrophobic surface area 5 corresponding to each other on the upper and lower surfaces of the heat pipe shell 9 made of a metal material by a chemical method to obtain a hydrophilic channel 7 and a hydrophobic channel 8; The heat pipe shell 9, by adding a coating on the upper and lower surfaces of the heat pipe shell 9 by physical means to make the hydrophilic surface area 6 and the hydrophobic surface area 5 corresponding to each other, so as to obtain the hydrophilic channel 7 and the hydrophobic channel 8, wherein the hydrophobic channel 8 As the gas-phase transport space of the working medium in the heat pipe, the hydrophilic channel 7 is the liquid-phase return space of the working medium.
所述工质为自润湿工质，自润湿工质具有的逆Marangani效应可使其自发的从热管的冷凝段3回流到蒸发段1，完成工质的相变循环运动；亲水通道7、疏水通道8的构建和自润湿工质的使用，使超薄热管在无需吸液芯结构的情况下即可实现有效运行。The working fluid is a self-wetting working fluid, and the reverse Marangani effect of the self-wetting working fluid can make it spontaneously flow back from the condensation section 3 of the heat pipe to the evaporation section 1 to complete the phase change cycle of the working fluid; the hydrophilic channel 7. The construction of the hydrophobic channel 8 and the use of self-wetting working medium enable the ultra-thin heat pipe to operate effectively without the need for a liquid-absorbing core structure.
本发明的无吸液芯结构超薄热管的工作原理如下:The operating principle of the ultra-thin heat pipe without liquid-absorbing core structure of the present invention is as follows:
首先在热管的蒸发段1，管内的自润湿工质受热蒸发，在压强作用下沿疏水通道8将热量传递至冷凝段3完成换热，由于热管蒸发段1和冷凝段3存在温差，凝结形成的自润湿液体会在表面张力梯度的作用下自发从冷凝段3向蒸发段1回流，从而完成自润湿工质的相变循环运动和热量传递交换。同时，对于热管内壁面两侧的亲水通道7，热管本身的扁平结构所形成的边角处可为自润湿液体的回流提供额外的毛细力，有利于提高热管的启动和传热性能。First, in the evaporation section 1 of the heat pipe, the self-wetting working medium in the tube is heated and evaporated, and the heat is transferred to the condensation section 3 along the hydrophobic channel 8 under the action of pressure to complete the heat exchange. Due to the temperature difference between the evaporation section 1 and the condensation section 3 of the heat pipe, condensation The formed self-wetting liquid will spontaneously flow back from the condensing section 3 to the evaporating section 1 under the action of the surface tension gradient, thereby completing the phase change cycle motion and heat transfer and exchange of the self-wetting working fluid. At the same time, for the hydrophilic channels 7 on both sides of the inner wall of the heat pipe, the corners formed by the flat structure of the heat pipe itself can provide additional capillary force for the backflow of the self-wetting liquid, which is conducive to improving the start-up and heat transfer performance of the heat pipe.
实施例1Example 1
如图1和图2所示，本发明实施例的一种无吸液芯超薄热管装置主要由热管管壳9内壁面制作有间隔分布的亲水表面区域6和疏水表面区域5的上下两块铜薄片构成，该实施例中蒸发段1、绝热段2和冷凝段3沿热管轴向的长度分别为20mm、70mm和30mm。As shown in Figures 1 and 2, an ultra-thin heat pipe device without a liquid-absorbent core according to an embodiment of the present invention is mainly composed of the upper and lower sides of the heat pipe shell 9 with the hydrophilic surface area 6 and the hydrophobic surface area 5 distributed at intervals. In this embodiment, the lengths of the evaporating section 1, the adiabatic section 2 and the condensing section 3 along the axial direction of the heat pipe are 20mm, 70mm and 30mm respectively.
在制作无吸液芯超薄热管装置的亲水表面区域6、疏水表面区域5时，首先，将热管管壳9通过稀硫酸和清洗剂对表面进行清洗，干燥后放入由2.5mol/L氢氧化钾和0.065mol/L过硫酸钾混合而成的腐蚀液中，腐蚀温度为70℃，腐蚀30分钟,在热管管壳9的表面形成一层氧化铜涂层；When making the hydrophilic surface area 6 and the hydrophobic surface area 5 of the ultra-thin heat pipe device without a liquid-absorbing core, at first, the heat pipe shell 9 is cleaned by dilute sulfuric acid and a cleaning agent, and after drying, put it into a 2.5mol/L In the corrosion solution mixed with potassium hydroxide and 0.065mol/L potassium persulfate, the corrosion temperature is 70°C, and the corrosion is carried out for 30 minutes to form a layer of copper oxide coating on the surface of the heat pipe shell 9;
进一步的，将材料为铜薄片的热管管壳9整个浸入熔融的蜡中，使蜡覆盖在热管管壳9的表面形成防腐蚀保护层，取出，待冷却后，除去需要制做成亲水表面区域6的蜡；Further, immerse the heat pipe shell 9 made of copper flakes into molten wax, so that the wax covers the surface of the heat pipe shell 9 to form an anti-corrosion protective layer, take it out, and after cooling, remove the surface that needs to be made into a hydrophilic surface. Zone 6 wax;
进一步的，用去离子水冲洗氧化铜涂层，并在烘箱中180℃加热30分钟，在氧化铜涂层表面得到超亲水表面；Further, rinse the copper oxide coating with deionized water, and heat it in an oven at 180° C. for 30 minutes to obtain a super-hydrophilic surface on the surface of the copper oxide coating;
进一步的，将超亲水表面在稀硫酸中浸泡20分钟，待氧化铜涂层消失后表面留下腐蚀微结构，形成亲水表面区域6；Further, the super-hydrophilic surface is soaked in dilute sulfuric acid for 20 minutes, and the corrosion microstructure is left on the surface after the copper oxide coating disappears, forming a hydrophilic surface area 6;
进一步的，重新将热管管壳9浸入熔融的石蜡中，除去要制做成疏水表面区域5的蜡，清洗风干后将热管管壳9在0.0025mol/L的十八烧基硫醇溶液中浸泡30分钟，浸泡温度为70℃，形成腐蚀表面；Further, re-immerse the heat pipe shell 9 in molten paraffin, remove the wax to be made into the hydrophobic surface area 5, and soak the heat pipe shell 9 in 0.0025mol/L octadecyl mercaptan solution after cleaning and air drying For 30 minutes, the immersion temperature is 70°C to form a corroded surface;
最后，取出热管管壳9，用乙醇对腐蚀表面进行清洗，制备得到疏水表面区域5。Finally, the heat pipe shell 9 is taken out, and the corroded surface is cleaned with ethanol to prepare the hydrophobic surface area 5 .
上下两块铜薄片制备的亲水表面区域6、疏水表面区域5所组成的亲水通道7和疏水通道8的宽度比为1：2。The width ratio of the hydrophilic channel 7 and the hydrophobic channel 8 composed of the hydrophilic surface area 6 and the hydrophobic surface area 5 prepared by the upper and lower copper sheets is 1:2.
实施例2Example 2
如图1和图2所示，同实施例1不同之处在于所用热管管壳材料为石墨膜或高分子材料PI薄膜，并采用添加涂层的物理方法直接在薄膜上构建亲水表面区域6、疏水表面区域5。对亲水通道7，选择使用纳米SiO2亲水涂层材料；对于疏水通道8，可直接利用石墨膜等材料本身的疏水特性，为增强疏水性，也可选择使用有机硅树脂类纳米涂料或氟碳型纳米涂料等自洁涂料。As shown in Figure 1 and Figure 2, the difference from Example 1 is that the heat pipe shell material used is a graphite film or a polymer material PI film, and the physical method of adding a coating is used to directly construct a hydrophilic surface area on the film 6 , Hydrophobic surface area 5. For the hydrophilic channel 7, choose to use nano-SiO2 hydrophilic coating material; for the hydrophobic channel 8, you can directly use the hydrophobic properties of the materials such as graphite film, in order to enhance hydrophobicity, you can also choose to use silicone resin nano-coating or Self-cleaning coatings such as fluorocarbon nano coatings.
实施例3Example 3
如图3，同实施例1、实施例2，所不同的是热管绝热段2横截面内，除管壁两侧均为亲水通道7外，中间部分为若干个间隔分布的亲水通道7和疏水通道8，且相邻的单个亲水通道7和疏水通道8宽度相等。As shown in Figure 3, it is the same as Embodiment 1 and Embodiment 2, except that in the cross section of the heat pipe insulation section 2, except that both sides of the pipe wall are hydrophilic channels 7, the middle part is a number of hydrophilic channels 7 distributed at intervals. and the hydrophobic channel 8, and the adjacent single hydrophilic channel 7 and the hydrophobic channel 8 have the same width.
实施例4Example 4
如图4同实施例1、实施例2，所不同的是热管绝热段2横截面内，除管壁两侧均为亲水通道外，中间部分为若干个间隔分布的亲水通道7和疏水通道8，且相邻的单个亲水通道7和疏水通道8宽度比为1：2。Figure 4 is the same as in Embodiment 1 and Embodiment 2, except that in the cross section of the heat pipe insulation section 2, except that both sides of the pipe wall are hydrophilic channels, the middle part is a plurality of hydrophilic channels 7 and hydrophobic channels distributed at intervals. channel 8, and the adjacent single hydrophilic channel 7 and hydrophobic channel 8 have a width ratio of 1:2.
实施例5Example 5
同实施例1、实施例2，所不同的是热管的工质为质量浓度分别为0.5％、1.0％或1.5％的正戊醇水溶液或质量浓度分别为0.05％、0.10％或0.15％的正庚醇水溶液。Same as Example 1 and Example 2, the difference is that the working medium of the heat pipe is respectively 0.5%, 1.0% or 1.5% n-amyl alcohol aqueous solution or 0.05%, 0.10% or 0.15% n-amyl alcohol solution. Aqueous solution of heptanol.
实施例6Example 6
同实施例1、实施例2，所不同的是热管管壳9的横截面形状为梯形、矩形或三角形。Similar to Embodiment 1 and Embodiment 2, the difference is that the cross-sectional shape of the heat pipe shell 9 is trapezoidal, rectangular or triangular.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050154.7ACN106604607B (en) | 2016-11-25 | 2016-11-25 | A kind of no liquid-sucking core ultrathin heat pipe device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050154.7ACN106604607B (en) | 2016-11-25 | 2016-11-25 | A kind of no liquid-sucking core ultrathin heat pipe device |
| Publication Number | Publication Date |
|---|---|
| CN106604607Atrue CN106604607A (en) | 2017-04-26 |
| CN106604607B CN106604607B (en) | 2019-01-08 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050154.7AActiveCN106604607B (en) | 2016-11-25 | 2016-11-25 | A kind of no liquid-sucking core ultrathin heat pipe device |
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