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First successful test of the piezo buzzer pump

posted Oct 7, 2014, 5:03 PM by Tiberius Brastaviceanu   [ updated Nov 19, 2014, 12:19 PM ]

Today we had the first positive results with the Piezo Buzzer Pump. The volume pushed by the pump is small, but at least we have something to optimize. The valve doesn't work very well. The valve is made of a 500um thick flexible silicon skin placed on top of 1mm holes. Perhaps the silicon skin is too thick and has a slower reaction.  

3D model




  1. Air bubbles are compressible and kill the pump, because they absorb the pressure created by the piezo membranes. 
  2. There are resonance frequencies at which the pump works better. 

Next steps

  1. Increase the volume by placing many membranes in parallel. 
  2. Increase the pressure by placing many membranes in series. 

R&D doc

Piezo buzzer pump - main doc