声控微型无阀压电喷流泵

摘要：提出了一种声控微型无阀压电喷流泵，利用声控电路控制无阀压电泵开启、关闭和喷流状态，实现了无需信号发生器直接驱动压电泵工作。阐述了声控电路设计结构和工作机理，设计并加工了声控振荡电路和声控开关电路板，并与无阀压电喷流泵匹配进行了系统调试，实验结果表明：压电泵喷流状态随外界声音频率、振幅变化而变化，声音频率越高、振幅越大，压电泵喷流高度增高，出水量增大；当声音频率与压电泵基频产生共振时，压电泵达到最佳喷流效果。

Non-valve piezoelectric fountain micro-pump by sound control circuit

Abstract: The article presented a kind of non-valve piezoelectric fountain micro-pump by sound control circuit. The sound control circuit controlled the non-valve piezoelectric pump to open, close and fountain state. Without the signal generating device, the sound control circuit could drive directly the piezoelectric pump to work. The article expounded the working principle and design structure about the sound control circuit. The sound control oscillating and switching circuit board is designed and manufactured. It combined with the non-valve piezoelectric fountain pump to carry on the system debugging. The experimental result indicated that the fountain state of piezoelectric pump changed along with the outside sound frequency and oscillation amplitude. When the frequency and the oscillation amplitude were higher, the non-valve piezoelectric pump cascaded to increase on the height and the output flow rate. The piezoelectric pump attained the best spraying result when the sound frequency and the basic frequency of piezoelectric pump created a resonance.