Simple Synthetic Jet Actuators for Cooling Applications Using Soft or Rigid Magnets

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• 作者：Gerda Buchberger^a ; ^c ; ^{gerda.buchberger@jku.at} ; Bernhard Jakoby^a ; J&uuml ; rgen Schö ; ftner^b ; Andreas Sch&uuml ; tzenberger^a ; Bianca Wiesmayr^a ; Werner Baumgartner^c ; Stefan Puttinger^d ; Andreas Brandl^b ; Wolfgang Hilber^a
• 关键词：synthetic jet ; actuator ; electronics cooling ; soft magnet ; composite membrane ; poly(dimethyl siloxane)
• 刊名：Procedia Engineering
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：168
• 期：Complete
• 页码：1541-1546
• 全文大小：376 K
• 卷排序：168

文摘

Consumer electronics are getting both smaller and more powerful. Hence, there is a need for small, scalable, silent, reliable and low-cost cooling systems. In order to meet these requirements, we designed simple synthetic jet (SynJet) actuators using silicone elastomer membranes together with either soft composite or rigid neodymium magnets. The SynJet actuators were electromechanically driven near their mechanical resonance frequency in the low-frequency range between 5 Hz and 120 Hz. In order to compare both configurations, we characterized the SynJet actuators thoroughly by measuring the air pressure in the SynJet housing, the magnet's deflection and the electric current and voltage at the driving electromagnet. In test configurations, the fabricated SynJet actuators reduced the thermal resistance by about 60% compared to natural convection, which proves their feasibility for active cooling solutions.