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Updated: Oct 6, 2025
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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
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Design and Fabrication of Pneumatically Actuated Valveless Pumps
1Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung City 84001, Taiwan.
Micromachines
|January 21, 2022
Summary
A novel valveless pump was developed using a unique membrane design, eliminating the need for traditional check valves. This innovative pump achieved a maximum flow rate exceeding 12.47 mL/min for efficient medium transportation.
Area of Science:
- Mechanical Engineering
- Fluid Dynamics
- Biomedical Devices
Background:
- Traditional pumps often rely on check valves, which can be prone to wear and failure.
- Integrating valve functionality into the pumping mechanism offers a more compact and potentially reliable solution.
Purpose of the Study:
- To design and fabricate a novel valveless pump for effective medium transportation.
- To utilize an actuated or deflected membrane to simultaneously perform pumping and check valve functions.
Main Methods:
- Theoretical analysis and numerical simulations were employed to study membrane deformation and optimize port placement.
- A prototype valveless pump was fabricated based on the design parameters.
Main Results:
- The study successfully designed and fabricated a functional valveless pump.
- Experimental results demonstrated a maximum flow rate of 12.47 mL/min at 5.0 Hz and 68.95 kPa driving pressure.
Conclusions:
- The developed valveless pump, with its integrated membrane check valve, is a viable alternative for medium transportation.
- The design shows promise for applications requiring efficient and reliable fluid handling.
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