Research Article | OPEN ACCESS
High Frequency Character of Piezoelectric Pump Valve
Yue Wu, Zhigang Yang and Yong Liu
College of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
Research Journal of Applied Sciences, Engineering and Technology 2013 24:5521-5526
Received: September 15, 2012 | Accepted: October 24, 2012 | Published: May 30, 2013
Abstract
In order to improve the performance of piezoelectric pump, research its check valve, find the interpretation of the incomplete closure of piezoelectric pump check valve in high frequency, analysis the characteristic of the pump in these conditions; give the judgment basis and theoretical demonstration of the existence for the phenomenon. Frequency response of the check valve in water is obtained from its dynamic model. Sufficient condition for the check valve incomplete closure was obtained which is amplitude amplification less than 0.25. Amplitude amplification factor in different frequency was calculated. The results showed that check valve can close completely operating at 80Hz, the incomplete closure phenomenon was observed at 140Hz. With further increasing of the frequency, amplitude amplification factor decreases, the phenomenon is more obvious under the condition of low amplitude amplification factor, the minimum clearance between the check valve and valve seat more than 30μm at 160Hz. The theoretical analysis results are verified, that the critical frequency can be used as the yardstick for working state of check valve in piezoelectric pump.
Keywords:
Check valve, dynamic mode, kinetic pressure, piezoelectric pump, working principle,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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