Piezoelectric Fan
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Uploader Comments (MideTech)
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.A deceptively simple design. A flexible transducer is fixed to end of a metal strip which is clamped in a fixture. AC current causes the transducer to vibrate powerfully, and because it is fixed on one end, the energy travels down the strip like a wave, causing it to oscillate. The effect is similar to that of a whip.
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A perfect example of a project that was intended for a different use, like energy harvesting, but it turns out that it was easier to use it as a fan ... and sell it! gotta love marketing.
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I work at the company that makes this :-) This fan is running on AC directly from a US wall outlet (120V / 60Hz ). The fan contains a piezoelectric crystal material that deflects when a voltage is applied; the 60Hz oscillation of the wall power causes the fan to oscillate.
The piezo fan is more expensive than the sleeve-bearing fans usually found in PCs and other consumer gear; its main use is in places where extremely long life, low power and maintenance-free operation are required.
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no i mean how can you turn a direct current into the linear arc shown here?
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The Piezo Fan combines all the characteristics of a QuickPack (low profile, low power etc) piezoelectric transducer with the cooling capabilities of a fan. The Piezo Fan runs from line voltage straight from a regular wall outlet.
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that looks sick but how does it work?
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we do not convert DC to AC, the fan operates using AC directly from a wall outlet.
MideTech 2 years ago
Compare to a fan of same size, this device does not displace a lot of air, does it?
nofumble62 2 years ago
compared to a rotary fan the air moved by this piezofan is less. however design changes can increase/decrease the amount of airflow from the fan.
MideTech 2 years ago