Functional Principle Micro Pump mp6

 

The functional principle of piezo membrane micropumps is easily explained.
A piezo ceramic is mounted on a brass membrane and deforms that membrane when a voltage is applied. With the resulting downstroke the medium is squeezed out of the pump chamber below. Check valves on both sides of the chamber define the flow direction.

When the voltage is decreased, the piezo's correspondent deformation causes an upstroke of the membrane. The medium is sucked in and the chamber is filled. The pump can operate at up to several hundred pumping cycles per second. The pumping characteristics can be optimized by adjusting three parameters: amplitude, frequency and wave form of the electric control signal.