发光学报
髮光學報
발광학보
Chinese Journal of Luminescence
2015年
10期
1195-1200
,共6页
李小华%包伟伟%王静%蔡忆昔%李慧霞
李小華%包偉偉%王靜%蔡憶昔%李慧霞
리소화%포위위%왕정%채억석%리혜하
大功率LED%电晕放电%离子风%针-网电极%强化传热
大功率LED%電暈放電%離子風%針-網電極%彊化傳熱
대공솔LED%전훈방전%리자풍%침-망전겁%강화전열
high power LED%corona discharge%ionic wind%needle-mesh electrodes%forced heat transfer
针对大功率LED芯片的散热问题,提出了一种基于电晕放电原理的离子风散热方案。通过试验,研究了电晕放电的电学性能,同时探寻了放电电压对制冷效果的影响以及温降随电晕放电功率的变化规律。结果表明,放电间距相同时,对发生器施加负电晕能够在较低的电压下产生离子风,降温效果显著。电晕电流平方根与放电电压呈线性关系。电晕放电功率为1.5 W、放电间距为10 mm时,散热效果最好。
針對大功率LED芯片的散熱問題,提齣瞭一種基于電暈放電原理的離子風散熱方案。通過試驗,研究瞭電暈放電的電學性能,同時探尋瞭放電電壓對製冷效果的影響以及溫降隨電暈放電功率的變化規律。結果錶明,放電間距相同時,對髮生器施加負電暈能夠在較低的電壓下產生離子風,降溫效果顯著。電暈電流平方根與放電電壓呈線性關繫。電暈放電功率為1.5 W、放電間距為10 mm時,散熱效果最好。
침대대공솔LED심편적산열문제,제출료일충기우전훈방전원리적리자풍산열방안。통과시험,연구료전훈방전적전학성능,동시탐심료방전전압대제랭효과적영향이급온강수전훈방전공솔적변화규률。결과표명,방전간거상동시,대발생기시가부전훈능구재교저적전압하산생리자풍,강온효과현저。전훈전류평방근여방전전압정선성관계。전훈방전공솔위1.5 W、방전간거위10 mm시,산열효과최호。
An ionic wind cooling method based on corona discharge theory was presented to meet the thermal demand of high power LED. The electrical properties of corona discharge were studied through experimental measurement. The effect of discharge voltage on the refrigerating performance was researched, as well as the change laws of temperature drops with discharge power. The experi-mental results indicate that the negative corona can generate ionic wind at lower voltage and result in siganificant cooling at the same electrode gap comparing with positive corona. The corona current square root displays a good linear relationship to the applied voltage. The optimal refrigerating per-formance is attained at 1. 5 W power and 10 mm electrode gap.