LED灯两相散热器PPT课件.ppt

LED灯两相散热器目录：  原理：热管是一种有着高导热性能的传热元件，它通过在全封闭的真空管腔内工质的蒸发与凝结来传递热量，具有极高的导热性、良好的等温性 工作特性原理：外部热源的热量，通过蒸发段使工质液体温度上升，温度上升液面蒸发，直至达到饱和蒸气压，此时热量以潜热的方式传给蒸气，在压差的作用下，蒸气流向低压且温度低的冷段，并在冷凝段的气液界面上冷凝，放出潜热放出的热量通过腔壁传给外冷源冷凝的工质液体通过毛细吸液芯回流到蒸发段，完成一个循环如此往复，不断的蒸发与冷凝，实现极速的热传导热管原理简介：发展概念： 这是一个散热片和热管的巧妙结合体具有散热能力好，重量轻的优点是大 LED灯散热器的最佳方案 两相均热板散热系统的工作方式：在真空腔体中，加入一定量的工作液体，在遇热时，工作液体吸收大量的热量转化成蒸气，蒸气携带大量的热量并快速在均热板腔体内均匀扩散，从而使热量快速均匀传导到与均热板连接（或一体）的鳍片之上，通过鳍片将热量散发到空气中经过鳍片的吸热散热后，水蒸气迅速凝结成液体，并通过腔体中的吸液芯回流到加热点，如此循环而起到高效的散热作用两相转热技术热管的传热效率比铜高1000倍平板热管：由点向面传热的传统热管径向热管 类型及结构：泡沫铜技术泡沫铜技术 新型吸液芯的应用：l类似于泡沫状的多孔金属l毛细结构，具有良好的亲水性散热片平板热管：由点向面传热的平板热管：由点向面传热的均热板散热系统：传热与散热的巧妙结合 两相散热器：两相散热器是我们自己研发的一种新型散热器之一。

它的设计是将散热片和平面热管巧妙结合为一体节省材料，提高散热功能均热板主体多孔金属吸液芯蒸发腔室导热蒸发模块散热模块蒸汽流分体回路式散热系统：分体回路式散热系统：蒸发腔室多孔金属吸液芯 分体回路式散热器：兼顾了两相散热器的优点，更提供了更为灵活多样的散热安装方式导热蒸发块散热模块蒸汽流重力式散热系统：重力式散热系统：蒸发腔室多孔金属吸液芯测试及性能：测试及性能： 应用实际的LED，通过温度检测仪，测试LED基板的最高温度30W 两相散热器：产品规格测试功率（W）风速（m/s)结温Tj(℃)120x90x23.5重量236克　30　---　69.5　30　0.5　53.1　24　---　55.4　24　0.5　47.560W 两相散热器： 60W 散热器测试结果：产品规格测试功率（W）风速（m/s)结温Tj(℃)250x120x23.5 　重量：1074克　60　---　62.5　600.5　　43.5　40　---　54.8　40　0.5　40.4100W 重力散热器：注意：此散热器使用时加热面必须向下倾斜角度不能大于30度4.1. 100W 散热器测试结果产品规格测试功率（W）风速（m/s)结温Tj(℃)218x138x58重量1240克 　　120　0　69　100　0.5　62测试示意图：散热器Tj(℃)5.温度测试：6.模拟风洞测试： THE 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