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研发了一系列将发光二极管(LED)散热与热管传热相结合的用于大功率LED冷却的热管散热器,并对其传热性能进行了实验研究。结果表明,该系列热管散热器具有良好的散热能力,能将节点温度控制在70℃以下,满足了大功率LED对结点温度的控制要求;实验结果还表明,翅片结构不同,换热器散热能力明显不同,所研发系列异形翅片热管换热器的散热能力明显高于目前常用的普通矩形翅片热管换热器,其中以外翻形翅片热管换热器散热能力最好;还研究了热管换热器工作倾角对其散热能力的影响,并给出了热管排布数量、翅片材质及结构对换热器散热性能、换热装置体积、成本及质量的影响。
Developed a series of heat pipe heat sinks for cooling high-power LEDs that combine the heat dissipation of LEDs with heat pipe heat transfer, and conducted experimental studies on the heat transfer performance. The results show that this series of heat pipe radiators have good heat dissipation capability and can control the node temperature below 70 ℃, which meets the control requirements of high power LED on the junction temperature. The experimental results also show that the structure of the fins is different, The heat dissipation ability is obviously different. The heat dissipation capability of the series of special-shaped finned heat pipe heat exchangers developed is obviously higher than that of the common rectangular fin heat pipe heat exchanger currently used, of which the outer finned finned heat pipe heat exchanger has the best heat dissipation capability. The influence of the working dip angle of heat pipe heat exchanger on the heat dissipation capacity is also analyzed. The influence of heat pipe arrangement, fin material and structure on the heat dissipation performance, heat exchange device volume, cost and quality is also given.