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Announcements - Piezo pump

Piezo buzzer pump V3

posted Nov 20, 2014, 9:39 PM by Tiberius Brastaviceanu   [ updated Dec 3, 2014, 8:39 PM ]

This is a new prototype of piezo buzzer pump with no valve. It uses very precise water channels and relies on fluid dynamics. See more in this paper


Model

Design by Tibi, Abran, Tibi

Pictures

 pump parts out of the 3D printer
 cleaned pump 3D printed parts. 

Comments

Piezo buzzer pump prototype V2

posted Oct 20, 2014, 11:37 AM by Tiberius Brastaviceanu   [ updated Oct 21, 2014, 9:48 AM ]

A modular and stackable piezo pump was designed and prototyped. It uses piezo buzzer membranes and 3D printed support. This pump should be very energy efficient. The flow can be increased by stacking more modules or by increasing the frequency of operation. We still need to characterize it in terms of flow and pressure, as well as durability. 
Open main doc


 3D model of one module


 Prototype of one module


 Multiple modules stacked






First tests of the piezo pump prototype

Dry testing of the Piezo pump prototype


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

Videos

 
 

Observations

  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



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