Simulation and experimental study of direct spray type piezoelectric air pumps based on synthetic jet

Liu, Cheng; Zhu, Yuchuan

doi:10.1007/s00542-019-04417-z

Cited by 17 publications

(7 citation statements)

References 19 publications

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“…To achieve a greater flow rate and pressure of the pump, one solution is to optimize the cavity design, combining the flowing medium characteristics such as vortex, laminar flow, and flow field theory to reduce the resistance in positive direction and increase it in negative direction. The optimized design can promote the pump function and diminish the backflow by using diffuser/nozzle as inlet and outlet, specially shaped flow tube, bluffbodies inside the cavity, and innovative structure such as screw pump [83] and multi-cavity tandem structure [84]. This design thinking has given rise to many different structures, and the performance of the valveless piezoelectric pump has been greatly improved, also, the demand for different applications and the need for special medium delivery is satisfied [85].…”

Section: Comparison Of Different Valve and Working Principles Of Valv...mentioning

confidence: 99%

“…In 2017, Wang et al [149] promoted a piezoelectric nozzle for microfluidic chips as the schematic in figure 12(c). Later in 2019, Liu et al [150] optimized the structure with a significant improvement by setting the inlet and outlet on the same side of the pump, also, a pump with double cavities was suggested and the performance was further improved [83].…”

Section: Pump With Innovative Structurementioning

confidence: 99%

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Recent trends in structures and applications of valveless piezoelectric pump—a review

et al. 2022

J. Micromech. Microeng.

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Piezoelectric actuator-driven valveless pump has been studied for a long time in theory and structure for the features of high precision, fast response, low power consumption, compact size, reliability for long-term use and high performance. The pump has a remarkable significance for drug delivery, biological application, chemical analysis, high precision gluing, solder paste, lubrication system and electronic chip cooling system, etc. However, a higher requirement on the control circuit and power supply for the pump is raised, also, the driving voltage of the pump should be further reduced. In this review, the piezoelectric pump with and without valve is analysed in working principle. Then, the recent trends of valveless pump in different structures are discussed. The representative structural designs in different thinking are introduced in the working media, driven voltage, frequency, flow rate, pressure, and the efficiency of the pump, the performance of different pumps are also compared. Afterwards, the application of the pump for different purposes with featured structures are presented. Next are the limitations and the outlook of the pump, which provides some potential research points for subsequent studies, and ended with a summary. This review concludes the recent trends of valveless piezoelectric pump in structural and application, attempts to guide the researchers with different professional backgrounds that can solve current problems through cross-disciplinary approaches.

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Section: Comparison Of Different Valve and Working Principles Of Valv...mentioning

confidence: 99%

Section: Pump With Innovative Structurementioning

confidence: 99%

Recent trends in structures and applications of valveless piezoelectric pump—a review

et al. 2022

J. Micromech. Microeng.

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show abstract

“…Therefore, it is necessary to modify the design of existing piezoelectric pumps to improve their performance. To this end, researchers are actively seeking to optimize the structure of the piezoelectric pump to improve the output performance of the piezoelectric pump by studying the pump cavity and other structural parameters that affect the performance of piezoelectric pumps [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis and Performance Test of a Compressible Piezoelectric Pump Fluid Cavity

Liu

Wang

et al. 2022

Micromachines

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The large load loss of piezoelectricity pumps leads to fluid energy in the fluid chamber during fluid transportation. In this paper, the output performance of a piezoelectricity pump is improved by changing the structure parameters of the fluid chamber to reduce the fluid load. The mechanism of fluid flow energy loss in the body cavity of hydraulic pumps is simulated and analyzed, and the influence of the dimensions of the inlet and outlet valves and the height of the cavity on fluid energy loss is obtained. The flow rate and pressure of inlet and outlet valves with different cavity heights and different driving frequencies are obtained. The results show that the flow rate and output pressure of the hydraulic pump are optimized when the cavity height is 3 mm, and the inlet and outlet valve diameters are 2.5 mm.

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“…Therefore, increasing the input energy density and energy conversion efficiency of the piezoelectric pump is of great significance to improving the output performance of the small piezoelectric gas drivers. In recent years, the research on piezoelectric gas pumps based on the principle of synthetic jet has been increasing (Chovet et al, 2016; Liu and Zhu, 2019; Liu et al, 2020). This type of piezoelectric pump does not require check valves and can work efficiently under high-frequency voltage signals.…”

Section: Introductionmentioning

confidence: 99%

Design and investigation on an ultrasonic-excited piezoelectric gas jet pump

Wang

Dong

Gao

et al. 2022

Journal of Intelligent Material Systems and Structures

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To improve the gas driving performance of the piezoelectric gas driver, this paper proposes a piezoelectric gas jet pump that uses the ultrasonic near sound field of the piezoelectric transducer to excite the gas mass points to oscillate and form a gas jet. The working characteristics of the pump are studied theoretically and experimentally. The distribution law of the sound field excited by the transducer in the sixth-order vibration mode is obtained through simulation analysis. Then the prototypes are designed through calculating the Reynolds number and Stokes number of the gas jet excited by ultrasonic near sound field. And the calculation results show that there is a direct relationship between the gas driving ability of the jet pump and the radiated sound pressure of the transducer. On this basis, the experiments are conducted and the results show that the gas driving performance is significantly affected by the position of the jet hole. When the jet hole is arranged in the central area of the piezoelectric transducer, the gas driving performance of the jet pump is the best. When the driving voltage is 80 Vpp and the driving frequency is 20.4 kHz, the gas flow rate reaches 0.39 L/min.

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Simulation and experimental study of direct spray type piezoelectric air pumps based on synthetic jet

Cited by 17 publications

References 19 publications

Recent trends in structures and applications of valveless piezoelectric pump—a review

Recent trends in structures and applications of valveless piezoelectric pump—a review

Simulation Analysis and Performance Test of a Compressible Piezoelectric Pump Fluid Cavity

Design and investigation on an ultrasonic-excited piezoelectric gas jet pump

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