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The concept of piezoelectric pump Piezo pump is a new type of fluid drive. It does not need additional drive motor, but the use of the piezoelectric ceramic piezoelectric effect of the piezoelectric deformation, and then by the deformation of the pump chamber volume change to achieve the fluid output or the use of piezoelectric vibrators to produce fluctuations in the transmission of liquid due to piezoelectric Pump has the characteristics of traditional pumps do not have to, if the traditional pump drive source part, the transmission part and the pump body of three integrated, enabling simple structure, small size, light weight, low energy consumption, no noise, no Electromagnetic interference, according to the applied voltage or frequency control the output of small flow. Although its invention and development of only 20 years of history, but in the aerospace, robotics, automotive, medical equipment, bio-genetic engineering, micro-machinery and other fields have been successfully applied.
The application of piezoelectric pump Piezoelectric pump is a revolutionary product of micro-pump manufacturing technology, it will drive and affect the development and progress of basic industries. In view of the wide application prospect of piezoelectric pump, many countries in the world (USA, Japan, Germany, Sweden, Netherlands, Singapore, etc.) are doing research in this area now. In China, the piezoelectric pump 863 project and the National Natural Science Foundation project. China's first piezoelectric pump enterprise standards and in May 2007 by the Asia-Pump Co., Ltd. for the first time enacted. Piezoelectric pumps are a new generation of industrial base products that are widely used in small mobile devices, CPUs and video cards, game consoles, notebook computers, blade servers, photovoltaic cells, LED lights, appliances, medical devices, petrochemical equipment , Biomedicine, automotive and avionics equipment, etc. It is efficient, energy-saving and environmental friendly. It will effectively promote the technological revolution in related industries, enhance the supporting capability of products, and actively promote the formation and development of industrial chain. The social and Economic benefits are extremely significant.
The working principle of piezoelectric pump Piezoelectric pump consists of piezoelectric vibrator, pump valve and pump body. In the work, when the AC power U is applied to both ends of the piezoelectric vibrator, the piezoelectric vibrator is radially compressed under the action of an electric field to generate tensile stress internally, thereby bending and deforming the piezoelectric vibrator. When the piezoelectric vibrator forward bending, the piezoelectric vibrator elongation, the pump chamber volume increases, the cavity fluid pressure decreases, the pump valve opens, the liquid into the pump chamber; when the piezoelectric vibrator to the reverse bending, the piezoelectric vibrator Shrinkage, reducing the volume of the pump chamber, cavity fluid pressure increases, the valve is closed, the pump cavity liquid is squeezed out, forming a smooth continuous flow.
The characteristics of piezoelectric pump technology innovation The use of electro-acoustic ceramic materials derived improved production of high-performance piezoelectric vibrator. Has the advantages of strong thermal stability, high strength, good toughness, good fracture resistance, large elastic modulus and strong oxidation resistance. The electrical parameters of the material have the advantages of large Kp, high electromechanical conversion rate, large AC capacitance, High dielectric constant and large radial vibration. The product has the advantages of simple structure, fast response, small volume, no noise, high pressure, high lift, no pressure loss, no pollution and convenient installation and use.
Piezoelectric pump background technology and development In the 1970s Sandin National Laboratory Dr. NJSpenser began on the piezoelectric pump research, 1993 Jilin University visiting scholar Dr. Yang Zhigang and others from Japan to introduce the technology, set up laboratories in Jilin University Research on Piezoelectric Film Pumps. So far this technology has been listed as six 863 programs, and eight NSFC and Innovation Fund-funded projects. Asia-pass pump industry is the first in the application of precision piezoelectric pump technology research and development and production and sales units, with a number of piezoelectric pump in the field of patented technology. Its products fully comply with the safety standards of China's household appliances, CE certification has been made, the product can enter the European market.
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