【摘要】：為了提高發(fā)光二極管(LED)的散熱能力,基于煙囪效應(yīng),在傳統(tǒng)太陽(yáng)花散熱器外側(cè)加裝圓筒壁,形成特殊的煙囪結(jié)構(gòu)。運(yùn)用Solidworks軟件構(gòu)建三維模型,用其插件Flow Simulation進(jìn)行熱仿真,并以散熱器翅片數(shù)12個(gè)、最大直徑70mm、高度40mm為基礎(chǔ)模型參數(shù),進(jìn)行優(yōu)化研究。研究表明,在翅片數(shù)為20個(gè)、最大直徑為85mm、高度為65mm時(shí),LED圓筒太陽(yáng)花散熱器的散熱效果最好。此時(shí),LED的最高溫度為48.98℃,比優(yōu)化前降低了13.05℃。當(dāng)功率為8,12,16,19W時(shí),LED芯片的最高溫度都滿足LED工作的安全要求。對(duì)功率為8W的LED散熱器樣品的實(shí)驗(yàn)測(cè)試結(jié)果表明,4個(gè)監(jiān)測(cè)點(diǎn)的實(shí)際溫度與仿真所得溫度的平均誤差為4.8%,在允許范圍內(nèi),驗(yàn)證了研究的正確性。在功率為32 W時(shí),配備圓筒太陽(yáng)花散熱器的芯片最高溫度仍滿足低于125℃的技術(shù)要求,并比配備傳統(tǒng)太陽(yáng)花散熱器的芯片溫度低6.44℃。所設(shè)計(jì)的LED圓筒太陽(yáng)花散熱器為解決大功率LED散熱問(wèn)題提供了一個(gè)新的途徑。
[Abstract]:In order to improve the heat dissipation capacity of light emitting diode (LED), a special chimney structure is formed by installing cylinder wall on the outside of traditional sunflower radiator based on chimney effect. The three-dimensional model is constructed by Solidworks software, and the thermal simulation is carried out with its plug-in Flow Simulation, and the optimization research is carried out based on the number of radiator wings, maximum diameter 70mm, height 40mm as the basic model parameters. The results show that when the number of wings is 20, the maximum diameter is 85mm and the height is 65mm, the heat dissipation effect of LED cylinder sunflower radiator is the best. At this time, the maximum temperature of LED is 48.98 鈩，

本文編號(hào)：2506404