大功率集成式LED热管散热器的研究

发布时间：2018-05-27 20:11

本文选题：大功率集成式LED + 热管散热器　；参考：《浙江工业大学》2012年硕士论文

【摘要】：大功率LED特别是集成式大功率LED越来越多的应用于照明行业，作为发光元件，具有发光效率高，寿命长的特点。由于LED芯片对温度的要求严格，在使用过程如何有效的散热是LED发展的关键问题，传统集成大功率LED散热器由于质量大，散热效率不高，在使用过程有很大的局限性。本文基于散热器的设计方法，引入新型的热管技术，结合传统的散热器，设计了一种新型的热管散热器，并对改进后的热管散热器翅片部分进行优化，具体工作如下： 1.通过研究热管的结构，分析热管的散热过程，提出把热管复杂的换热过程用简单的热传导来代替，用分段式的当量导热系数定义热管各个部分的导热效果，大大简化热管散热器数值计算，为散热器的数值优化计算提供了理论基础。 2.在原有散热器的基础上，对散热器进行结构改进，在冷凝段增加翅片以加大冷凝段的热交换面积，提高热管冷凝段的散热能力，并对冷凝段的翅片进行正交优化，分析翅片各个尺寸对散热器质量和散热效果的影响，最后得到比较好的优化结果。 3.对试制的样品进行试验，结果证明简化模型能够比较准确的反映热管散热器的散热过程；通过对改进后散热器的测点温度测定，，表明了优化后的散热器质量较轻，散热器效果较好，达到了优化的目的。
[Abstract]:The high power LED, especially the integrated high-power LED, is more and more used in the lighting industry. As a light emitting element, it has the characteristics of high luminous efficiency and long life. Because of the strict requirements for the temperature, the effective heat dissipation of the LED chip is the key problem of the development of the LED. The traditional integrated high-power LED radiator is of large quality and heat dissipation. The efficiency is not high, and there is a great limitation in the use process.
In this paper, based on the design method of radiator, a new type heat pipe radiator is designed with the new heat pipe technology and the traditional radiator, and the fin parts of the improved heat pipe radiator are optimized. The specific work is as follows:
1. by studying the structure of the heat pipe and analyzing the heat transfer process of the heat pipe, it is proposed that the heat transfer process is replaced by a simple heat transfer process. The heat conduction effect of each part of the heat pipe is defined by the sectional equivalent thermal conductivity, and the numerical calculation of the heat pipe radiator is simplified, which provides the theoretical basis for the numerical optimization calculation of the heat exchanger.
2. on the basis of the original radiator, the structure of the radiator is improved. The heat exchange area of the fins is added in the condensing section to increase the heat exchange area of the large cold condensing section, and the heat dissipation capacity of the condensing section of the heat pipe is improved. The fins of the condensing section are optimized orthogonal, and the influence of the size of the fins on the quality of the radiator and the heat dissipation is analyzed. Finally, the better advantages are obtained. Turn the result.
3. the test samples are tested. The results show that the simplified model can accurately reflect the heat dissipation process of the heat pipe radiator. Through the measurement of the measured point temperature of the improved radiator, the optimized radiator is lighter and the effect of the radiator is better, and the aim of the optimization is achieved.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH122;TN312.8

【参考文献】