自然对流下LED集成芯片整体式热管散热器性能实验研究

周驰; 左敦稳; 孙玉利

doi:10.3788/fgxb20143511.1394

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自然对流下LED集成芯片整体式热管散热器性能实验研究

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 自然对流下LED集成芯片整体式热管散热器性能实验研究
- Experimental Investigation of Integrated Heat Pipe Heat Sink for Multi-chip LED Module in Natural Convection
- 发光学报 2014年35卷第11期页码：1394-1400
- 作者机构：
  
  南京航空航天大学机电学院,江苏南京,210016
- 作者简介：
- 基金信息：
  
  国家自然科学基金面上项目(51375237)();江苏省自然科学基金面上项目(BK2012796)资助()
- DOI：10.3788/fgxb20143511.1394
  中图分类号： TN312.8;TK172.4
- 纸质出版日期：2014-11-3，
  
  网络出版日期：2014-7-11，
  
  收稿日期：2014-7-7，
  
  修回日期：2014-8-26，
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周驰, 左敦稳, 孙玉利. 自然对流下LED集成芯片整体式热管散热器性能实验研究[J]. 发光学报, 2014,35(11): 1394-1400

ZHOU Chi, ZUO Dun-wen, SUN Yu-li. Experimental Investigation of Integrated Heat Pipe Heat Sink for Multi-chip LED Module in Natural Convection[J]. Chinese Journal of Luminescence, 2014,35(11): 1394-1400
周驰, 左敦稳, 孙玉利. 自然对流下LED集成芯片整体式热管散热器性能实验研究[J]. 发光学报, 2014,35(11): 1394-1400 DOI： 10.3788/fgxb20143511.1394.

ZHOU Chi, ZUO Dun-wen, SUN Yu-li. Experimental Investigation of Integrated Heat Pipe Heat Sink for Multi-chip LED Module in Natural Convection[J]. Chinese Journal of Luminescence, 2014,35(11): 1394-1400 DOI： 10.3788/fgxb20143511.1394.

摘要

为解决LED集成芯片光源的散热问题

提出一种整体式热管散热器

并在不同的热源功率、充液率、倾角下进行了自然对流散热实验研究。结果表明:散热器的热管最佳充液率为30%。热功率较小时

0~50倾角对热管传热影响不大;倾角达到75时

各功率下的热管传热及散热器热阻都明显恶化。散热器启动时间约为30 min

且几乎不受功率大小影响;但75倾角下

需要更多时间达到稳定。相比于常见的平行板和太阳花翅片散热器

采用整体式热管散热器散热的芯片结温可得到更有效控制。

Abstract

In order to solve the problem of cooling LED multi-chip LED module

an integrated heat pipe heat sink was designed and fabricated. Heat dissipation experiments were conducted to study effects on heat load

filling ratio and inclination angle on the thermal performance of the heat sink in nature convection. The results show that the efficient heat transfer of the heat pipe can reduce the thermal resistance of the heat sink effectively and the optimum filling ratio is 30% in this research. Inclination angle in the range of 0-50 has little effect on heat transfer capability of heat pipe at lower heat load. When the angle reaches 75

heat transfer of heat pipe and thermal resistance of heat sink are all subject to a significant deterioration. The time heat sink enters stable state is about 30 min and is not affected by the magnitude of the power. However

the heat sink works stably after 40 min when angle is 75. Compared to traditional parallel plate fins and sunflower fins heat sink

the chip junction temperature with integrated heat pipe heat sink is smallest.

关键词

LED热管散热器热阻结温

Keywords

LEDheat pipeheat sinkthermal resistancejunction temperature

references

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