Micro Piezo Air Pump is becoming an important force in promoting the technological innovation and progress of medical equipment with their advantages of precise control, low noise, high reliability and low energy consumption in blood pressure measurement equipment and other medical equipment. With the continuous development of medical technology, the application prospect of miniature piezoelectric air pumps will be broader, and make greater contribution to the improvement of people's health and quality of life.
Micro Piezo Air Pump: the source of accurate power for portable blood pressure measurement equipment
In the development of modern medical equipment, the miniature piezoelectric air pump is gradually developing into an indispensable core component in blood pressure measurement equipment and other medical equipment with its excellent performance and application advantages. It achieves precise control of fluid through advanced Micro Fluid Control technology, thus playing a crucial role in blood pressure measurement.
AUDIOWELL, which has been dedicated to ultrasonic technology for more than 20 years, has long had rich experience in mass production of the first generation of Micro Piezo Air Pump and miniature piezoelectric fans and other related technologies. Through technological innovation, the company has successfully developed a new generation of Micro Piezo Air Pump integrating ultrasonic frequency band, high flow output and high pressure load.
Working principle of Micro Piezo Air Pump
Micro Piezo Air Pump consists of piezoelectric vibrator, pump valve and pump body, there is no motor, no rotating parts, piezoelectric vibrator for its power drive source, driven by AC power, piezoelectric vibrator radial shortening or lengthening under the action of the electric field, and at the same time drive the elasticity of the substrate bending and deformation, so as to change the volume of the pump cavity. Piezoelectric vibrator positive bending (that is, piezoelectric vibrator elongation), the pump cavity volume increases, the pressure inside the cavity decreases, the gas flows into the pump cavity; when the piezoelectric vibrator reverse bending (that is, the piezoelectric vibrator contraction), the pump cavity volume decreases, the pressure inside the cavity increases, the gas is squeezed out of the pump cavity, thus forming a gentle continuous gas flow direction.
Integrated design, high precision flow control
Micro Piezo Air Pump has a simple structural design and operates efficiently. By integrating the drive source, transmission part and pump body into one compact unit, the integrated design not only makes the pump body lighter, but also has a fast response speed, which can precisely control the output of tiny flow and precise air pressure according to the applied voltage or frequency. If the driving voltage is increased and the air pressure is high, the flow rate will be high and vice versa. As can be seen from the following P-Q characteristic chart, influenced by the large radial vibration characteristics of the piezoelectric vibrator, the product has a large output flow rate, and the gas flow rate can still maintain a positive output under a pressure load of 40 kPa.
This is particularly true in blood pressure measurement equipment applications, where Micro Piezo Air Pump provides a steady and continuous flow of gas to ensure the accuracy and reliability of blood pressure measurements.
In other medical device applications, the Micro Piezo Air Pump also demonstrates its unique advantages. For example, in drug delivery systems, its ability to precisely control the release of minute amounts of slow-release agents makes it more reliable, which is essential for the precise delivery of drugs such as insulin or cancer analgesia.
"Silent" operation, stable performance
As there is no motor and rotating parts inside the Micro Piezo Air Pump, the resonant frequency is 24.5±2KHz (>20 kHz), which belongs to the ultrasonic frequency band and is beyond the range of human ear hearing, the noise is as low as below 40dB and is not easy to be subjected to electromagnetic interference, and the piezoelectric oscillator inside the product is of good toughness, good resistance to rupture, strong antioxidant performance, and high reliability, which makes it an ideal choice in the need for a quiet environment and stable performance in the medical scenarios as an ideal choice.
Low power consumption, which helps to improve the whole machine's endurance
It is worth mentioning that the low power consumption of the Micro Piezo Air Pump also provides a possibility for its application in smart wearable devices. Compared with traditional air pumps, the micro piezoelectric air pump has a high efficiency of conversion of electrical and mechanical energy, low driving voltage, and power consumption of only 1.5w, which will help improve the endurance of the whole device.
Small size and light weight
For portable blood pressure measurement seeking small size and lightness, the Micro Piezo Air Pump's compact dimensions (21x19x3.2mm, excluding nozzle) and light weight (3.5g) are perfectly in line with this technological trend.
Fast pressure reduction for a more comfortable experience
In real-world application tests, the Micro Piezo Air Pump demonstrated excellent performance. When connected to a 100cc container, it was able to reduce the pressure from 260mmHg to 15mmHg in 10 seconds, a rapid response capability that greatly enhances the user experience. Users are able to quickly release the pressure constraints and enjoy a more comfortable and convenient testing process after using a wearable device fitted with the pump for blood pressure testing.
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