Simulation Analysis on Sucking Process Outflow Phenomenon in Piezoelectric Pump

2012 ◽  
Vol 443-444 ◽  
pp. 1096-1100
Author(s):  
Yong Liu ◽  
Zhi Gang Yang ◽  
Yue Wu
Keyword(s):  
Simulation Analysis ◽  
Interaction Model ◽  
Check Valve ◽  
Chamber Pressure ◽  
Piezoelectric Pump ◽  
Root Cause ◽  
Piezoelectric Vibrator ◽  
Output Flow ◽  
Inertial Flow ◽  
Flow Inertia

: The author has found the sucking process outflow phenomenon existing in piezoelectric pump during the outflow experiment. To explain the reason of outflow in sucking process, the fluid-structure interaction model of piezoelectric vibrator, fluid and check valve is founded. The simulation analysis turns out that the pump chamber pressure increases sharply in the later of sucking process because of the flow inertia, which is the root cause of sucking process outflow. The output flow should include two part, bulk flow and inertial flow, which will provide theoretical reference to piezoelectric pump outflow control.

Inertial Flow Phenomenon Analysis on Piezoelectric Pump

2011 ◽  
Vol 110-116 ◽  
pp. 920-926
Author(s):  
Yong Liu ◽  
Zhi Gang Yang ◽  
Yue Wu
Keyword(s):  
Dynamic Model ◽  
Mechanical Vibration ◽  
Driving Frequency ◽  
Piezoelectric Pump ◽  
Flow Phenomenon ◽  
Output Flow ◽  
Pump Output ◽  
Inertial Flow ◽  
Outlet Valve ◽  
Flow Inertia

The author finds that there is outflow during piezoelectric pump sucking process, and a dynamic model combined with hydrodynamics and mechanical vibration is presented for the anlysis of piezoelectric pump sucking process phenomenon. The model is utilized to study the reason of sucking process outflow and the effect of the driving frequency, outlet valve rigidity, the load in inlet and outlet on the sucking process outflow. The result turns out that the flow inertia is the cause of sucking process outflow; the inertial flow also exists during draining process as the sucking process; increasing driving frequency, or outlet valve rigidity, the inertial flow decreases, increasing the load in inlet and outlet has the same effect. The research makes it clear that the pump output flow should include two parts, bulk flow and inertial flow, which will provide theory reference for the precise flow control of piezoelectric pump.

scholarly journals Performance of single piezoelectric vibrator micropump with check valve

2019 ◽  
Vol 31 (1) ◽  
pp. 117-126 ◽  
Author(s):  
Jingshi Dong ◽  
Yi Cao ◽  
Quanqu Chen ◽  
Yue Wu ◽  
Rui Gang Liu ◽  
...  
Keyword(s):  
Check Valve ◽  
Maximum Flow ◽  
Mass Separation ◽  
Dominant Factor ◽  
Inertia Force ◽  
Maximum Output ◽  
Sinusoidal Voltage ◽  
Piezoelectric Pump ◽  
Opening Displacement ◽  
Piezoelectric Vibrator

A new single vibrator piezoelectric micropump which integrated the check valve and the piezoelectric oscillator is designed in this research. The micropump mainly consists of a circular piezoelectric vibrator, a polyethylene terephthalate check valve, two rubber sealing rings, upper pump cover, and lower pump cover. In this research, in order to study output performance of the single vibrator piezoelectric pump, theoretical analysis and experimental verification of the piezoelectric pump check valve have been carried out by exploiting the method of check valves and vibrator mass separation. Experimental results show that the opening of the check valve is mainly caused by the pressure difference and the inertia force. The dominant factor of check valve opening is different under different drive frequencies. A maximum opening displacement of 19.625 μm of the check valve is obtained when the micropump is driven by a sinusoidal voltage of 60 V at 300 Hz. In addition, the maximum flow rate of 2034.7 mL min−1 is obtained when the micropump is driven by a sinusoidal voltage of 60 V at 320 Hz, and a maximum output pressure of 0.82 kPa is obtained when the micropump is driven by a sinusoidal voltage of 60 V at 140 Hz.

Experiment analysis of high output pressure piezoelectric pump with straight arm wheeled check valve

2021 ◽  
pp. 1045389X2098700
Author(s):  
Lipeng He ◽  
Xiaoqiang Wu ◽  
Zheng Zhang ◽  
Zhe Wang ◽  
Bangcheng Zhang ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Energy Loss ◽  
Check Valve ◽  
Experimental Results ◽  
Piezoelectric Pump ◽  
Output Pressure ◽  
Pressure Characteristic ◽  
Analysis System ◽  
Experiment Analysis ◽  
High Output

Piezoelectric pumps are applied in many fields, such as chemical analysis system and fluid pumping systems. Piezoelectric pumps with high output pressure can meet the needs of more fields. This article introduces the design and fabrication of a high output pressure piezoelectric pump with straight arm wheeled check valve. In this paper, the influence of straight arm wheeled check valve on the output pressure of piezoelectric pump is deeply discussed from the aspect of energy loss. This study investigated the effect of valve arm number ( N = 2, 3,4, and 5), the valve arm width ( W = 0.8, 1.0, and 1.2 mm), and the valve arm length ( L = 1.92, 2.02, and 2.12 mm) on the output pressure of piezoelectric pump. The output pressure characteristic of straight arm wheeled check valve piezoelectric pump with different valve parameters is obtained by experiment. Experimental results show that when N = 4, W = 1.0 mm, L = 2.02 mm, the output pressure of the straight arm wheeled check valve piezoelectric pump has the best output pressure of 27.41 kPa at 220 V and 85 Hz. This study provides a reference for the further application of piezoelectric pumps in fluid pumping field.

Passive Control Shuttle-Type Check Valve – a New Nuclear-Class Fluid Control Component

2011 ◽  
Vol 317-319 ◽  
pp. 1474-1477
Author(s):  
Kun Chen ◽  
Xiang Wei Zeng ◽  
Xiao Ping Qiu ◽  
Xiao Ge Zeng
Keyword(s):  
Flow Resistance ◽  
Passive Control ◽  
Simulation Analysis ◽  
Check Valve ◽  
Resistance Coefficient ◽  
Structural Principle ◽  
Symmetric Structure ◽  
Stop Time ◽  
Fluid Control ◽  
Type Check

A novel check valve - passive control shuttle-type check valve is introduced in this paper based on the comparison of the existing swing check valves including the liquid, structural principle, flow resistance coefficient, airproof and start-stop performances. The experimental and simulation analysis validated that shuttle-type check valve has the advantages of symmetric structure along the pipeline axis, balance circle flow, low coefficient streamline, adjustable start-stop time, multi-airproof, zero leakage and less noise.

Development of a piezoelectric pump with ball valve structure

2021 ◽  
pp. 1045389X2199417
Author(s):  
Qiaosheng Pan ◽  
Haiyang Jiang ◽  
Ziliang Huang ◽  
Bin Huang ◽  
Ruijun Li ◽  
...  
Keyword(s):  
Flow Rate ◽  
Check Valve ◽  
Experimental Tests ◽  
Vertical Displacement ◽  
Ball Valve ◽  
Piezoelectric Pump ◽  
Analogue Circuit ◽  
Current Design ◽  
Study Designs ◽  
Rate Pulsation

This study designs, fabricates and tests a piezoelectric pump with the structure of a polystyrene ball check valve. The structure of the check valve consists of three layers of specially designed polymethylmethacrylate plates and six polystyrene balls, which forms a particular three-layer constraint mechanism to limit the lateral and vertical displacement of the balls. The assembly of the ball valve can be completed with a simple placing operation, which simplifies the assembly process of the entire pump. The balls are lightweight, which is beneficial for working at high frequencies. The current design adopts two compressible spaces, and the equivalent analogue circuit of compressible spaces is established and analysed. Experimental results indicate that compressible spaces can alleviate the burden in the actuator and smoothen the flow rate pulsation in the long flow channel. The theoretical analysis and experimental tests reveal that this new piezoelectric pump is self-priming. A high flow rate of 99.6 mL/min and the maximum back pressure of 15.3 kPa are obtained when the pump is driven with a sinusoidal voltage of 448 Vpp at the resonant frequency of 790 Hz.

Theoretical Analysis and Experimental Study on the Vibration of the Bimorph Piezoelectric Vibrator for Piezoelectric Pump

2014 ◽  
Vol 551 ◽  
pp. 164-169 ◽  
Author(s):  
Wei Zheng ◽  
Bai Song Lin ◽  
Jing Shi Dong ◽  
Jing Yuan Shi ◽  
Bo Da Wu
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Vibration Mode ◽  
Test Results ◽  
Piezoelectric Pump ◽  
Bending Vibration ◽  
Piezoelectric Vibrator ◽  
Element Simulation ◽  
Support Conditions ◽  
The Relationship

This paper studied the characteristics of the bimorph piezoelectric vibrator for piezoelectric pump. By simulating the working conditions of the vibration in the pump, we constructed a dynamic model and derived the bending vibration equations of the piezoelectric vibrator under different support conditions. Then the analysis of finite element simulation is carried out for the equations, through which the vibration mode of the multi-order modal of the piezoelectric vibrator was acquired, and the relationship between the deformation deflection and peripheral support stiffness of the piezoelectric vibrator was analyzed. Finally, the deformation of the piezoelectric vibrator was tested. It is found that the test results are consistent with the conclusions of the finite element simulation, which provides a theoretical basis for the optimal design of the bimorph piezoelectric vibrator.

639 Development of a Piezoelectric Pump : Vibration Characteristics of the Piezoelectric Vibrator

2004 ◽  
Vol 2004 (0) ◽  
pp. _639-1_-_639-5_
Author(s):  
Katsuyoshi SUZUKI ◽  
Hideharu ISAKA ◽  
Kenichi SUZUKI ◽  
Tomokazu NITTA
Keyword(s):  
Vibration Characteristics ◽  
Piezoelectric Pump ◽  
Piezoelectric Vibrator
Sign in / Sign up

Export Citation Format

Share Document