扩散焊吸液芯结构对热管传热性能的影响

doi:10.3969/j.issn.0438-1157.2014.04.011

化工学报 ›› 2014, Vol. 65 ›› Issue (4): 1229-1235.DOI: 10.3969/j.issn.0438-1157.2014.04.011

扩散焊吸液芯结构对热管传热性能的影响

何艳丽^1,2, 李京龙², 孙福², 张赋升², 魏艳妮²

1 西北工业大学凝固技术国家重点实验室, 陕西西安 710072;
2 西北工业大学摩擦焊接陕西省重点实验室, 陕西西安 710072

收稿日期:2013-07-22 修回日期:2013-12-01 出版日期:2014-04-05 发布日期:2013-12-10
通讯作者: 李京龙
作者简介:何艳丽（1987—），女，硕士研究生。
基金资助:
国家自然科学基金项目（51071123，51101126）。

Effect of diffusion bonded wick structure on thermal performance of heat pipe

HE Yanli^1,2, LI Jinglong², SUN Fu², ZHANG Fusheng², WEI Yanni²

1 State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China;
2 Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China

Received:2013-07-22 Revised:2013-12-01 Online:2014-04-05 Published:2013-12-10
Supported by:
supported by the National Natural Science Foundation of China(51071123, 51101126).

摘要/Abstract

摘要： 利用扩散焊分层实体制造技术对蚀刻紫铜薄片进行焊接，完成吸液芯结构（微通道）的制造以及平板热管整体结构的装配。通过系统研究分析了槽道宽度、加热功率以及冷却方式对热管性能的影响。结果表明，该方法能较好地实现热管吸液芯结构以及整体结构的制造；试验过程中槽道宽度为0.4 mm的热管性能最优，在加热功率为40 W、水平放置、加热过程伴随风冷的试验条件下，其最大当量热导率能达2552.2 W·m^-1·K^-1，为紫铜的6.7倍。采用扩散焊分层实体制造的方法可以在槽道中形成很多小槽道，有利于液体工质的回流，从而提高热管的导热性能。

关键词: 扩散焊, 制造, 吸液芯, 微通道, 平板热管, 传热, 当量热导率

Abstract: Copper foils with etched axial grooves were diffusion bonded to carry out laminated object manufacturing (LOM) of a wick and integral structure for flat heat pipe. The influences of groove width, heating power and cooling mode on thermal performance of the heat pipe were studied experimentally. The results indicate that LOM structure by diffusion bonding is applicable in manufacturing flat heat pipe. Heat pipe with the groove width of 0.4 mm worked well during the whole experiments, and the best performance was presented under the heating power of 40 W, put horizontally, forced air cooling during heating, with the equivalent thermal conductivity reaching 2552.2 W·m^-1·K^-1, which is 6.7 times that of copper. Smaller grooves formed during diffusion bonding can help liquid reflow, which enhances the thermal performance of the heat pipe.

Key words: diffusion bonding, manufacture, wick, micro channel, flat heat pipe, heat transfer, equivalent thermal conductivity

中图分类号:

TK124

何艳丽, 李京龙, 孙福, 张赋升, 魏艳妮. 扩散焊吸液芯结构对热管传热性能的影响[J]. 化工学报, 2014, 65(4): 1229-1235.

HE Yanli, LI Jinglong, SUN Fu, ZHANG Fusheng, WEI Yanni. Effect of diffusion bonded wick structure on thermal performance of heat pipe[J]. CIESC Journal, 2014, 65(4): 1229-1235.

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扩散焊吸液芯结构对热管传热性能的影响

Effect of diffusion bonded wick structure on thermal performance of heat pipe

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