FIELD: engine devices and pumps.
SUBSTANCE: by using traveling wave of closed-volume deformation due to wave-type motion formed from compression and extension of piezoelements. In this case, an alternating three-phase excitation voltage is supplied. The fluid is displaced by changing the total volume of the stack of piezoelements consisting of three modules made of washers.
EFFECT: increased pump pressure, improved efficiency.
5 cl, 6 dwg
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