Performance study of external Laval tube diffusion/nozzle piezoelectric pump

Hu, Renhui; He, Lipeng; Wang, Chensheng; Wang, Hongxin; Sun, Li; Li, Xiaotao; Lin, Jian

doi:10.1016/j.sna.2023.114566

Cited by 9 publications

(2 citation statements)

References 27 publications

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“…Piezoelectric sheet pumps are most typically constructed with the piezoelectric sheet affixed to the pump chamber [13,14], and the advantages of this structure are simple and easy to miniaturize. However, piezoelectric sheets with fixed borders generally work in the quasi-static state with low output displacement and driving force; as a result, piezoelectric sheet pumps have low flow rate, backpressure, and load capacity.…”

Section: Introductionmentioning

confidence: 99%

Development of an inertia-driven resonant piezoelectric stack pump based on the flexible support structure

Chen,

Jin,

Gao

et al. 2024

Smart Mater. Struct.

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This paper proposes an inertia-driven resonant piezoelectric stack pump based on a flexible support structure to solve the problem that the piezoelectric stack cannot effectively drive the diaphragm pump to transport liquid due to too small output displacement and too high resonant frequency when one end is fixed. Under the inertial force generated by the vibration of the piezoelectric stack’s mass center during its deformation, the whole piezoelectric stack will vibrate with the flexible support structure; and a large displacement and inertial force can be achieved to drive the pump at the resonant frequency. Piezoelectric pumps are designed with a diaphragm pump and a piezoelectric stack based on the flexible support structure. The piezoelectric vibrator includes a piezoelectric stack, a preloading component and a flexible support plate. A fixed support plate and three flexible support plates with different stiffnesses were fabricated and assembled with the same piezoelectric stack and diaphragm pump respectively to construct four piezoelectric pump prototypes with different resonant frequencies. The temperature rise characteristics of the piezoelectric stack were experimentally studied to determine the safe range of the driving voltage and frequency. Then the output performances of the piezoelectric pumps were tested. Under a sinusoidal driving voltage of 100 Vpp, the piezoelectric pump based on the fixed support structure cannot pump water, while the piezoelectric pumps based on the flexible support structure achieved the maximum flow rates of 89.0 ml/min, 123.4 ml/min and 197.4 ml/min at the resonant frequencies of 262 Hz, 297 Hz and 354 Hz, and the maximum backpressures of 4.4 kPa, 7.5 kPa and 11.0 kPa at 266 Hz, 309 Hz and 365 Hz.

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Section: Introductionmentioning

confidence: 99%

Development of an inertia-driven resonant piezoelectric stack pump based on the flexible support structure

Chen,

Jin,

Gao

et al. 2024

Smart Mater. Struct.

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show abstract

“…They can quickly switch between different operating states and achieve instantaneous fluid control. This characteristic is crucial in applications requiring rapid response and real-time adjustment, with broad prospects in microfluidic transport fields such as medical microinfusion [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ], fuel cells [ 19 , 20 , 21 , 22 , 23 , 24 ], cooling systems [ 25 , 26 , 27 , 28 , 29 ], micromanipulation [ 30 , 31 ], and surface coating of fan blades [ 32 ]. In recent decades, researchers have extensively studied piezoelectric pumps and incorporated them into their products.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Cardioid Flow Tube Valveless Piezoelectric Pump for Medical Applications

Wang,

Zhang,

Gui

et al. 2023

Sensors

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Piezoelectric pumps play an important role in modern medical technology. To improve the flow rate of valveless piezoelectric pumps with flow tube structures and promote the miniaturization and integration of their designs, a cardioid flow tube valveless piezoelectric pump (CFTVPP) is proposed in this study. The symmetric dual-bend tube design of CFTVPP holds great potential in applications such as fluid mixing and heat dissipation systems. The structure and working principle of the CFTVPP are analyzed, and flow resistance and velocity equations are established. Furthermore, the flow characteristics of the cardioid flow tube (CFT) are investigated through computational fluid dynamics, and the output performance of valveless piezoelectric pumps with different bend radii is studied. Experimental results demonstrate that CFTVPP exhibits the pumping effect, with a maximum vibration amplitude of 182.5 μm (at 22 Hz, 100 V) and a maximum output flow rate of 5.69 mL/min (at 25 Hz, 100 V). The results indicate that a smaller bend radius of the converging bend leads to a higher output flow rate, while the performance of valveless piezoelectric pumps with different diverging bends shows insignificant differences. The CFTVPP offers advantages such as a high output flow rate, low cost, small size for easy integration, and ease of manufacturing.

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Asymmetric Ba0.7Sr0.3CoO3-δ/MXene solar evaporators for enhanced treatment of high salinity organic wastewater: Improving salt deposition control and pollutant removal

Luo,

Jiang,

et al. 2024

Desalination

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Performance study of external Laval tube diffusion/nozzle piezoelectric pump

Cited by 9 publications

References 27 publications

Development of an inertia-driven resonant piezoelectric stack pump based on the flexible support structure

Development of an inertia-driven resonant piezoelectric stack pump based on the flexible support structure

Design and Analysis of a Cardioid Flow Tube Valveless Piezoelectric Pump for Medical Applications

Asymmetric Ba0.7Sr0.3CoO3-δ/MXene solar evaporators for enhanced treatment of high salinity organic wastewater: Improving salt deposition control and pollutant removal

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