Research on a large opening and high flow rate piezoelectric pump with straight arm wheeled check valve

He, Lipeng; Yi, Hong-Xun; Hu, Dianbin; Hu, Renhui; Zhang, Zheng; Cheng, Guangming

doi:10.1063/5.0076649

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…When the piezoelectric actuator is at the extreme positions of vibration, the maximum value of the volume change quantity,

, in the pump chamber can be regarded as the volume of a fusiform body composed of two curved surfaces, both above and below. By leading into

, which is the deformation curve equation of the piezoelectric actuator,

can be integrated as follows [ 43 ]:

…”

Section: Design and Operating Principlementioning

confidence: 99%

A Dual-Inlet Pump with a Simple Valves System

Wang,

Liu,

Wang

et al. 2023

Micromachines

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To ameliorate the deficient output flow performance of the piezoelectric pumps with cantilever valves, a dual-inlet pump with a simple valves system is proposed. On the basis of explaining the structure design of the prototype, the working principle of the prototype is explained, and the output flow is theoretically analyzed. Then, the manufacturing process of the prototype is introduced. The general operating frequency of the pump was obtained by combining the finite element analysis of the piezoelectric actuator under dry and wet modes with the mechanical vibration test, and a series of measured flow rates were compared and improved through valve stiffness optimization and pump chamber height adjustment in the subsequent control experiment. The proposed piezoelectric pump achieves a maximum flow rate of 33.18 mL/min at a 180 Vp-p voltage with the driving frequency of 100 Hz, which may bring new inspiration for the application of small intelligent pumps in the field of microfluidics.

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“…When the piezoelectric actuator is at the extreme positions of vibration, the maximum value of the volume change quantity,

, in the pump chamber can be regarded as the volume of a fusiform body composed of two curved surfaces, both above and below. By leading into

, which is the deformation curve equation of the piezoelectric actuator,

can be integrated as follows [ 43 ]:

…”

Section: Design and Operating Principlementioning

confidence: 99%

A Dual-Inlet Pump with a Simple Valves System

Wang,

Liu,

Wang

et al. 2023

Micromachines

View full text Add to dashboard Cite

show abstract

“…The pump achieved a maximum flow rate of 58.6 mL/min and a maximum pressure of 28.7 kPa. Lipeng He et al [25]designed a piezoelectric pump with a straight-arm wheel-type one-way valve. The flow rate within a high-frequency range can be enhanced by reducing the number of valves, thickness, and width of valve arms.…”

Section: Introductionmentioning

confidence: 99%

Novel miniature valve-based piezoelectric liquid pump

liu,

wang

et al. 2024

Preprint

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Piezoelectric pumps are an important aspect of microfluidics due to their small size, low noise, and lack of electromagnetic interference, which makes them highly versatile. As technology advances, the field of microfluidics requires higher standards for miniaturization, flow rate, and pressure of piezoelectric pumps. This paper introduces two novel miniature valve-based piezoelectric liquid pump with distinct structures: the Mono-port valved piezoelectric micropump (MPVPM) and the Bi-port valved piezoelectric micropump (BPVPM). The primary distinguishing factor between the two is the number of cantilever beam valves at the outlet, with the former featuring one set and the latter featuring two sets. Firstly, simulation software is employed to analyze the inlet/outlet valves, the surrounding flow field, microchannels, and the overall operation process. Secondly, the key structural parameters of the piezoelectric pump are optimized through experiments. Finally, prototypes are fabricated, and the output performance indicators of the proposed two piezoelectric pumps are tested and compared. According to the simulation and experimental results, it appears that BPVPM is capable of discharging the fluid in the chamber at a faster rate than MPVPM; The arc-shaped channel in BPVPM, which has been found to have better energy transfer efficiency; it has been observed that the flow rate and pressure of the piezoelectric pump initially increase with the driving frequency, followed by a decrease, while they increase linearly with the voltage. Under the optimal operating conditions, the flow rate and pressure of MPVPM are 4.4 mL/min and 21 kPa, respectively, while those of BPVPM reach 5.1 mL/min and 25.7 kPa. This suggests that BPVPM has a superior output performance compared to MPVPM. Additionally, both proposed piezoelectric pumps have the same dimensions of 7mm x 7mm x 1.5mm, making them compact and efficient. This piezoelectric pump exhibits good comprehensive output performance in a small size and holds potential practical value in fields such as biomedical, cooling systems, fuel supply, and chemical engineering.

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