CN105300149A - Pulsating heat pipe heat transfer system realizing one-way circular flowing and heat transfer method of pulsating heat pipe heat transfer system - Google Patents
Pulsating heat pipe heat transfer system realizing one-way circular flowing and heat transfer method of pulsating heat pipe heat transfer system Download PDFInfo
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Abstract
本发明公开了一种单向循环流动的脉动热管传热系统及其传热方法，包括直流电源、离子牵引定向管、中空闭环脉动热管回路、离子牵引定向管包括多个发射极和集电极，发射极与集电极之间交错依次排列并以密封绝缘的方式连接；发射极连接直流电源的正极，集电极连接直流电源的负极。发射极与集电极之间形成强电场，气态工质和工质液态在强电场作用下，受电流体动力拖动，沿离子牵引定向管的轴向方向作定向移动，并推动气态工质和工质液态，在中空闭环脉动热管回路内作单向循环流动；从而完成气态工质和工质液态在蒸发区与冷凝区之间不断流动、交换，完成传热。本系统技术手段简便易行，应用领域广，具有积极地技术效果和推广应用价值。
The invention discloses a pulsating heat pipe heat transfer system with unidirectional circulating flow and a heat transfer method thereof. The emitter and the collector are arranged alternately and connected in a sealed and insulated manner; the emitter is connected to the positive pole of the DC power supply, and the collector is connected to the negative pole of the DC power supply. A strong electric field is formed between the emitter and the collector. Under the action of the strong electric field, the gaseous working medium and the liquid working medium are dragged by electric hydrodynamic force, and move directionally along the axial direction of the ion traction directional tube, and push the gaseous working medium and The liquid working medium flows in one direction in the hollow closed-loop pulsating heat pipe circuit; thereby completing the continuous flow and exchange of the gaseous working medium and the liquid working medium between the evaporation zone and the condensation zone to complete heat transfer. The technical means of the system is simple and easy to implement, has a wide application field, and has positive technical effects and popularization and application value.
Description
技术领域technical field
本发明涉及强化传热领域，尤其涉及一种单向循环流动的脉动热管传热系统及其传热方法。The invention relates to the field of enhanced heat transfer, in particular to a pulsating heat pipe heat transfer system with unidirectional circulation flow and a heat transfer method thereof.
背景技术Background technique
随着电子制造技术的微型化、集成化的不断提高，单位容积内发热量急剧增大，由此引发的“热阻”问题已成为制约电子制造技术发展的重要因素。一方面，电子元器件的高度集成化不可避免的导致单位容积的发热量急剧增加，以计算机CPU为例，其运行过程中产生的热流密度已经达到60～100W/cm2，而在半导体激光器中热流密度甚至达到103W/cm2数量级。另一方面，电子器件工作的可靠性对温度十分敏感，器件温度在70～80℃水平上每增加1℃，可靠性就会下降5％，较高的温度水平已日益成为制约电子器件性能的瓶颈。因此，如何高效的散热对电子技术的发展尤为重要，研究开发新型强化传热元件具有重要的应用价值。With the continuous improvement of miniaturization and integration of electronic manufacturing technology, the calorific value per unit volume has increased sharply, and the resulting "thermal resistance" problem has become an important factor restricting the development of electronic manufacturing technology. On the one hand, the high integration of electronic components inevitably leads to a sharp increase in heat generation per unit volume. Taking computer CPU as an example, the heat flux generated during its operation has reached 60-100W/cm 2 , while semiconductor lasers The heat flux even reaches the order of 10 3 W/cm 2 . On the other hand, the reliability of electronic devices is very sensitive to temperature. For every 1°C increase in device temperature between 70 and 80°C, the reliability will drop by 5%. Higher temperature levels have increasingly become a factor restricting the performance of electronic devices. bottleneck. Therefore, how to efficiently dissipate heat is particularly important to the development of electronic technology, and the research and development of new enhanced heat transfer elements has important application value.
目前传统脉动热管传热装置，工质很难在脉动热管环路中形成稳定的单向循环流动，大大降低了蒸发区和冷凝区之间工质的交换效率，导致脉动热管工作时传热性能不稳定且传热效率不够优异；此外，在低功率下，由于脉动热管中气态、液态工质分布的随机性，使得蒸发区和冷凝区的工质循环很难建立，导致脉动热管的启动输入功率较大，在低功率条件下应用受限。At present, in the traditional pulsating heat pipe heat transfer device, it is difficult for the working medium to form a stable unidirectional circulation flow in the pulsating heat pipe loop, which greatly reduces the exchange efficiency of the working medium between the evaporation zone and the condensation zone, resulting in poor heat transfer performance of the pulsating heat pipe. Unstable and the heat transfer efficiency is not excellent; in addition, at low power, due to the randomness of the distribution of gaseous and liquid working fluids in the pulsating heat pipe, it is difficult to establish the circulation of the working fluid in the evaporation zone and the condensation zone, resulting in the start-up input of the pulsating heat pipe High power, limited application under low power conditions.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点和不足，提供一种结构简单，传热效率高的单向循环流动的脉动热管传热系统及其传热方法。The object of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, and provide a pulsating heat pipe heat transfer system and heat transfer method thereof with simple structure and high heat transfer efficiency.
本发明通过下述技术方案实现：The present invention realizes through following technical scheme:
一种单向循环流动的脉动热管传热系统，包括直流电源7、由金属毛细管3及串接在金属毛细管3上的离子牵引定向管4组成的中空闭环脉动热管回路、充装在中空闭环脉动热管回路内的工质；所述中空闭环脉动热管回路分为蒸发区、绝热区和冷凝区；所述离子牵引定向管4包括多个发射极6和集电极5，发射极6与集电极5之间交错依次排列并以密封绝缘的方式连接；发射极6连接直流电源7的正极，集电极5连接直流电源7的负极。A pulsating heat pipe heat transfer system with one-way circulating flow, including a DC power supply 7, a hollow closed-loop pulsating heat pipe circuit composed of a metal capillary 3 and an ion traction directional tube 4 connected in series to the metal capillary 3, and a hollow closed-loop pulsating heat pipe circuit filled in a hollow closed-loop pulsating heat pipe The working medium in the heat pipe circuit; the hollow closed-loop pulsating heat pipe circuit is divided into an evaporation zone, an adiabatic zone and a condensation zone; the ion traction directional tube 4 includes a plurality of emitters 6 and collectors 5, and the emitter 6 and collector 5 They are alternately arranged in sequence and connected in a sealed and insulated manner; the emitter 6 is connected to the positive pole of the DC power supply 7 , and the collector 5 is connected to the negative pole of the DC power supply 7 .
所述工质呈气态工质2和液态工质1间隔分布于中空闭环脉动热管回路内。The working medium is distributed in the form of gaseous working medium 2 and liquid working medium 1 in the hollow closed-loop pulsating heat pipe circuit at intervals.
所述离子牵引定向管4可分为一段或多段，并串接在蒸发区、绝热区和/或冷凝区。The ion traction orienting tube 4 can be divided into one or more sections, and connected in series in the evaporation zone, heat insulation zone and/or condensation zone.
所述发射极6和集电极5的电极采用薄璧管，薄璧管的内壁为光滑表面或粗糙表面。The electrodes of the emitter 6 and the collector 5 are thin-wall tubes, and the inner walls of the thin-wall tubes are smooth or rough.
发射极6与集电极5之间设有绝缘垫圈8，其击穿电压大于10000V。An insulating gasket 8 is provided between the emitter 6 and the collector 5, and its breakdown voltage is greater than 10000V.
所述发射极6、集电极5的为金属材料或导电非金属材料。The emitter 6 and the collector 5 are made of metal material or conductive non-metal material.
所述工质为电导率范围为10-12～10-16S/cm的传热介质。The working fluid is a heat transfer medium with an electrical conductivity ranging from 10 -12 to 10 -16 S/cm.
所述工质为甲醇、乙醇、丙酮、制冷剂FC-72、氟利昂或者去离子水。The working medium is methanol, ethanol, acetone, refrigerant FC-72, Freon or deionized water.
所述直流电源7的输出电压为100V～10000V。The output voltage of the DC power supply 7 is 100V-10000V.
上述单向循环流动的脉动热管传热系统的传热方法：The heat transfer method of the pulsating heat pipe heat transfer system of the above-mentioned unidirectional circulation flow:
步骤一：中空闭环脉动热管回路内为真空环境；由于表面张力的作用，气态工质2和液态工质1相互间隔分布在中空闭环脉动热管回路内；Step 1: The hollow closed-loop pulsating heat pipe circuit is in a vacuum environment; due to the effect of surface tension, the gaseous working medium 2 and the liquid working medium 1 are distributed in the hollow closed-loop pulsating heat pipe circuit at intervals;
步骤二：打开直流电源7，调节至所需电压值；Step 2: Turn on the DC power supply 7 and adjust to the required voltage value;
步骤三：离子牵引定向管4开始工作，发射极6与集电极5之间形成强电场，气态工质2和液态工质1在强电场作用下，受电流体动力拖动，沿离子牵引定向管4的轴向方向作定向移动，并推动气态工质2和液态工质1，在中空闭环脉动热管回路内作单向循环流动；从而完成气态工质2和液态工质1在蒸发区与冷凝区之间不断流动、交换，完成传热。Step 3: The ion traction orienting tube 4 starts to work, and a strong electric field is formed between the emitter 6 and the collector 5. Under the action of the strong electric field, the gaseous working medium 2 and the liquid working medium 1 are dragged by electric hydrodynamic force, and are oriented along the ion traction The axial direction of the tube 4 moves directionally, and pushes the gaseous working medium 2 and the liquid working medium 1 to perform unidirectional circulation in the hollow closed-loop pulsating heat pipe circuit; thereby completing the gaseous working medium 2 and the liquid working medium 1 in the evaporation zone and Continuous flow and exchange between condensation areas complete heat transfer.
本发明相对于现有技术，具有如下的优点及效果：Compared with the prior art, the present invention has the following advantages and effects:
本发明通过发射极和集电极之间外加直流高电压，产生强电场，对离子牵引定向管4中的工质产生电流体动力，使其定向运动，从而推动整个中空闭环脉动热管回路中工质的单向循环运动，不仅可大大提高工质在蒸发区和冷凝区的交换效率，极大提高脉动热管的传热效率和热稳定性，而且还可极大降低脉动热管的启动输入功率，从而解除脉动热管在低功率应用的受限。In the present invention, a high DC voltage is applied between the emitter and the collector to generate a strong electric field, which generates electrohydrodynamic force for the working medium in the ion traction directional tube 4, and makes it move directionally, thereby pushing the working medium in the entire hollow closed-loop pulsating heat pipe circuit The unidirectional circulation movement can not only greatly improve the exchange efficiency of working fluid in the evaporation zone and condensation zone, greatly improve the heat transfer efficiency and thermal stability of the pulsating heat pipe, but also greatly reduce the starting input power of the pulsating heat pipe, thus Relieves limitations of pulsating heat pipes in low power applications.
本发明技术手段简便易行，应用领域广，具有积极地技术效果和推广应用价值。The technical means of the invention is simple and easy to implement, has wide application fields, and has positive technical effects and popularization and application value.
附图说明Description of drawings
图1为本发明单向循环流动的脉动热管传热系统结构示意图。Fig. 1 is a structural schematic diagram of a pulsating heat pipe heat transfer system with unidirectional circulation flow in the present invention.
图2为图1离子牵引定向管结构示意图。Fig. 2 is a schematic diagram of the structure of the ion traction directional tube in Fig. 1 .
图3为图1离子牵引定向管内壁示意图，粗糙结构(电场强化)示意图。Fig. 3 is a schematic diagram of the inner wall of the ion traction orienting tube in Fig. 1, and a schematic diagram of the rough structure (electric field strengthening).
具体实施方式detailed description
下面结合具体实施例对本发明作进一步具体详细描述。The present invention will be described in further detail below in conjunction with specific embodiments.
实施例Example
如图1至3所示。本发明单向循环流动的脉动热管传热系统，包括直流电源7、由金属毛细管3及串接在金属毛细管3上的离子牵引定向管4组成的中空闭环脉动热管回路、充装在中空闭环脉动热管回路内的工质(正离子9、分子10、负离子11)；所述中空闭环脉动热管回路分为蒸发区、绝热区和冷凝区；所述离子牵引定向管4包括多个发射极6和集电极5，发射极6与集电极5之间交错依次排列并以密封绝缘的方式连接；发射极6连接直流电源7的正极，集电极5连接直流电源7的负极。As shown in Figures 1 to 3. The pulsating heat pipe heat transfer system with one-way circulating flow of the present invention includes a DC power supply 7, a hollow closed-loop pulsating heat pipe circuit composed of a metal capillary 3 and an ion traction directional tube 4 connected in series on the metal capillary 3, and a hollow closed-loop pulsating heat pipe circuit filled in a hollow closed-loop pulsating The working medium (positive ions 9, molecules 10, negative ions 11) in the heat pipe loop; the hollow closed-loop pulsating heat pipe loop is divided into an evaporation zone, an adiabatic zone and a condensation zone; the ion traction directional tube 4 includes a plurality of emitters 6 and The collector electrode 5, the emitter electrode 6 and the collector electrode 5 are alternately arranged and connected in a sealed and insulated manner; the emitter electrode 6 is connected to the positive pole of the DC power supply 7, and the collector electrode 5 is connected to the negative pole of the DC power supply 7.
所述工质呈气态工质2和液态工质1间隔分布于中空闭环脉动热管回路内。The working medium is distributed in the form of gaseous working medium 2 and liquid working medium 1 in the hollow closed-loop pulsating heat pipe circuit at intervals.
所述离子牵引定向管4可分为一段或多段，并串接在蒸发区、绝热区和/或冷凝区。离子牵引定向管4与金属毛细管3的连接，可采用有机高分子粘剂(聚醋酸乙烯胶粘剂)粘合。粘合后，离子牵引定向管4与金属毛细管3之间相互绝缘，且密封性良好。发射极6和集电极5的连接与The ion traction orienting tube 4 can be divided into one or more sections, and connected in series in the evaporation zone, heat insulation zone and/or condensation zone. The connection between the ion traction directional tube 4 and the metal capillary 3 can be bonded with an organic polymer adhesive (polyvinyl acetate adhesive). After bonding, the ion traction orientation tube 4 and the metal capillary 3 are insulated from each other, and the sealing performance is good. Emitter 6 and Collector 5 are connected with
所述发射极6和集电极5的电极采用薄璧管，薄璧管的内壁为光滑表面或粗糙表面。The electrodes of the emitter 6 and the collector 5 are thin-wall tubes, and the inner walls of the thin-wall tubes are smooth or rough.
所述发射极6与集电极5之间设有绝缘垫圈8(硅胶垫圈)，其击穿电压大于10000V。其粘结与离子牵引定向管4和金属毛细管3的粘合方式相同。An insulating gasket 8 (silica gel gasket) is provided between the emitter 6 and the collector 5, and its breakdown voltage is greater than 10000V. Its bonding method is the same as that of the ion traction orientation tube 4 and the metal capillary 3 .
所述发射极6、集电极5的为金属材料或导电非金属材料。The emitter 6 and the collector 5 are made of metal material or conductive non-metal material.
所述工质为电导率范围为10-12～10-16S/cm的传热介质，如甲醇、乙醇、丙酮、制冷剂FC-72、氟利昂或者去离子水。The working medium is a heat transfer medium with an electrical conductivity ranging from 10 -12 to 10 -16 S/cm, such as methanol, ethanol, acetone, refrigerant FC-72, Freon or deionized water.
所述直流电源7的输出电压为100V～10000V。The output voltage of the DC power supply 7 is 100V-10000V.
上述单向循环流动的脉动热管传热系统的传热方法，可通过如下步骤实现：The heat transfer method of the pulsating heat pipe heat transfer system with unidirectional circulation flow can be realized through the following steps:
步骤一：中空闭环脉动热管回路内为真空环境；由于表面张力的作用，气态工质2和液态工质1相互间隔分布在中空闭环脉动热管回路内；Step 1: The hollow closed-loop pulsating heat pipe circuit is in a vacuum environment; due to the effect of surface tension, the gaseous working medium 2 and the liquid working medium 1 are distributed in the hollow closed-loop pulsating heat pipe circuit at intervals;
步骤二：打开直流电源7，调节至所需电压值；Step 2: Turn on the DC power supply 7 and adjust to the required voltage value;
步骤三：离子牵引定向管4开始工作，发射极6与集电极5之间形成强电场，气态工质2和液态工质1在强电场作用下，受电流体动力拖动，沿离子牵引定向管4的轴向方向作定向移动，并推动气态工质2和液态工质1，在中空闭环脉动热管回路内作单向循环流动；从而完成气态工质2和液态工质1在蒸发区与冷凝区之间不断流动、交换，完成传热。Step 3: The ion traction orienting tube 4 starts to work, and a strong electric field is formed between the emitter 6 and the collector 5. Under the action of the strong electric field, the gaseous working medium 2 and the liquid working medium 1 are dragged by electric hydrodynamic force, and are oriented along the ion traction The axial direction of the tube 4 moves directionally, and pushes the gaseous working medium 2 and the liquid working medium 1 to perform unidirectional circulation in the hollow closed-loop pulsating heat pipe circuit; thereby completing the gaseous working medium 2 and the liquid working medium 1 in the evaporation zone and Continuous flow and exchange between condensation areas complete heat transfer.
如上所述，便可较好地实现本发明。As described above, the present invention can be preferably carried out.
本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The implementation of the present invention is not limited by the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods, and are all included in within the protection scope of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225073A (en) * | 2018-02-26 | 2018-06-29 | 华南理工大学 | The pulsating heat pipe and its operation method of a kind of integrated check valve |
| CN110701930A (en) * | 2019-10-18 | 2020-01-17 | 天津商业大学 | High-efficiency heat pipe for enhancing condensation heat exchange of liquid drops by electric field |
| CN113048820A (en) * | 2021-05-07 | 2021-06-29 | 大连海事大学 | Controllable tubular pulsating heat pipe heat transfer system with external oscillation source |
-
2015
- 2015-10-13 CN CN201510656725.0A patent/CN105300149A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225073A (en) * | 2018-02-26 | 2018-06-29 | 华南理工大学 | The pulsating heat pipe and its operation method of a kind of integrated check valve |
| CN110701930A (en) * | 2019-10-18 | 2020-01-17 | 天津商业大学 | High-efficiency heat pipe for enhancing condensation heat exchange of liquid drops by electric field |
| CN113048820A (en) * | 2021-05-07 | 2021-06-29 | 大连海事大学 | Controllable tubular pulsating heat pipe heat transfer system with external oscillation source |
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