Journal
CHINESE SCIENCE BULLETIN
Volume 59, Issue 16, Pages 1885-1889Publisher
SCIENCE PRESS
DOI: 10.1007/s11434-014-0214-9
Keywords
Gyroscope; Spiral; Valveless; Piezoelectric; Pump
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Funding
- National Natural Science Foundation of China [51075201, 51205193]
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The valveless piezoelectric pump integrates driving and transmitting into one operating element, and characterizes easy micro-miniaturization. But, there is the original sin of low pressure and low flow. Thus, it must avoid weakness to choose applications field. This paper analyzes the flow characteristics in the rotary spiral-tube, which will cause the Coriolis force, and subsequently influence the fluid moving. The principle of the pump is deduced, and the spiral-tube-type valveless piezoelectric pump is invented. The angular velocity variation can be obtained when the pump attitude changes, which theoretically verifies the gyroscopic effect of the pump. A pump is fabricated for experimental testing. Experiments has shown that when Archimedes spiral is selected for the tube design, and the rotation speed of the plate is 70 r/min, the pressure differential is 9 mm H2O, which is 1.5 times that of 0 r/min rotation speed. If introduced the low-cost and miniaturized gyroscope, then this may promise potential application in these areas such as smart cars, robots, and home health care.
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