Affiliations: [a] Precision Driving Laboratory, Nanjing University of
Aeronautics and Astronautics, Nanjing 210016, China | [b] College of Mechanical and Electronic Engineer, Beijing
Union University, Beijing 100020, China
Abstract: Traditional valveless piezoelectric pumps are difficult to be
minimized for its special tubes installed outside the chamber. Moreover, the
effect of mixing different kinds of liquid is not good. In order to improve the
configuration and performance of the pump, a novel valveless piezoelectric
pump – valveless piezoelectric pump with unsymmetrical slopes elements (USE)
is developed. It is designed aimed at intensing the vortex field in the chamber
during pumping. The intense vortex field is helpful to stir and mix different
liquids in the chamber to produce solution, homogeneous emulsion or turbid
liquid. Firstly, pumping principle of the proposed pump is analyzed. Then,
numerical models are established, and simulation and numerical calculation on
the flow fields in the chambers are carried out.Finally, experiments are
implemented to verify the validity and reliability of numerical analysis.
Keywords: Piezoelectricity, valveless, pump, flow field, unsymmetric slopes element
