【摘要】 设计了一种单腔大振子被动阀压电泵,压电振子直径为70 mm,厚度0.6 mm,采用伞形橡胶阀厚度为0.3 mm,直径为10 mm。在理论分析的基础上,验证了结构输出流量的合理性。利用浓度90%的甘油水溶液模拟黏度234.6 mPa·s血液介质,测试了不同工作频率下单腔大振子压电泵输出流量及压力。试验结果表明:在输入电压为110 V正弦交流电压,当电源信号频率为210 Hz时,得到流量最大值为412.5 mL/min,在当电源信号频率为110 Hz时,得到压力最大值为1.729×104Pa。试验结果为单腔大振子压电泵血液输送研究提供了参考。更多还原

【Abstract】 A style of the piezoelectric pumps driven by single lumen large vibrators passive valve is designed. Among them,the diameter of the piezoelectric vibrator was 70 mm,the thickness of 0. 6 mm,and the umbrella the thickness of the rubber valve was 0. 3 mm,and 10 mm in diameter. On the basis of theoretical analysis,the rationality of the piezoelectric pump output flow was validated.Concentration of 90% glycerol water solution was used in simulation for 234. 6 mPa·s blood viscosity medium,and the output flow and pressure of the piezoelectric pumps driven by single lumen large vibrators under different working frequencies were tested. The experimental results show that in the input voltage is 110 V sine alternating current( AC) voltage,power signal frequency is 210 Hz,the maximum flow rate of 412. 5 mL/min,the power signal frequency is 110 Hz,maximum pressure of 1. 729×104 Pa is obtained. Test results provide the reference for research of the piezoelectric pumps driven by single lumen large vibrators.更多还原