An acoustic micropump device using piezoelectric transducers to create a directional fluid flow.

The present disclosure relates to a micropump device for creating a net fluid flow along a flow direction. The device comprises a fluid channel and a plurality of piezoelectric transducers arranged adjacent to the fluid channel. The piezoelectric transducers are organized into a set of at least three groups, the groups being consecutively arranged along the flow direction, and each comprising at least one piezoelectric transducer. A controller of the device is configured to actuate the piezoelectric transducers using at least three periodic electrical control signals, each electrical control signal being associated with one group of the set. The controller is configured to consecutively delay the at least three electrical control signals to another, in accordance with the consecutively arranged groups of the set, to create the net flow of fluid along the flow direction.

Patent Publication Number: EP4656877

Source: EPO

Year publication: 2025

Status: Requested

Technology domains: undefined