The magnetic levitation fan manufacturer will explain to you the working principle and structure of magnetic levitation fans.
Release date:
2021-08-12
The magnetic levitation fan manufacturer would like to explain the working principle and structure of magnetic levitation fans to everyone. The working principle of a magnetic levitation centrifugal blower is that it integrates magnetic levitation bearing technology and high-speed motor technology into a conventional blower, resulting in a highly efficient, environmentally friendly, energy-saving, and new-type blower.
Magnetic levitation fan The manufacturer will explain the working principle and structure of magnetic levitation fans.
Magnetic levitation fan The working principle of the magnetic levitation centrifugal blower is to integrate magnetic levitation bearing technology and high-speed motor technology into a conventional blower, thereby creating a highly efficient, environmentally friendly, energy-saving, and novel type of blower.
A magnetic bearing controlled by an internal magnetic levitation bearing uses an electromagnetic field generated by electric current to create an attractive force, thereby achieving suspension of the rotating shaft. A high-speed motor is a synchronous permanent-magnet motor that converts the controllable-frequency alternating current produced by an inverter into an alternating magnetic field in the motor stator, causing the rotating shaft to spin at high speed. Air enters through the intake port of the vortex, driven by the impeller of a blower that rotates at high speed along with the rotating shaft. Under the guidance and pressurization of the vortex, the air accelerates to a certain flow rate and pressure, and finally exits through the vortex’s exhaust port.
Magnetic levitation fan The main components of the structure include a high-efficiency centrifugal impeller, magnetic levitation bearings, a permanent-magnet synchronous motor, and a dedicated variable-frequency drive. This fan features an integrated design, with its high-speed motor, variable-frequency drive, magnetic levitation bearings, and microprocessor control cabinet all designed and integrated as a single unit. At the heart of this design are magnetic levitation bearing technology and permanent-magnet motor technology.
1. The high-speed centrifugal impeller is designed and its parameters optimized based on the three-dimensional flow theory, maximizing impeller efficiency and broadening its operating range. Its material—high-strength aluminum forging or titanium alloy—offers excellent resistance to deformation. Manufactured with precision using CNC machining centers, this impeller boasts superior corrosion resistance. According to measurements by experts at the National Fluid Laboratory, the impeller’s operating point can achieve an efficiency as high as 85%.
2. A high-speed permanent-magnet synchronous motor features permanent magnets mounted on the motor’s main shaft to ensure its magnetic properties. Coils wound around the silicon steel laminations of the motor stator generate a vibrating magnetic field. During operation, the rotor speed and the vibrating magnetic field remain synchronized. This permanent-magnet motor employs magnetic levitation bearings, which offer advantages such as zero mechanical friction, low noise, low vibration, and long service life. It can achieve high rotational speeds of up to 50,000 rpm.
3. Magnetic levitation bearings use controllable electromagnetic attraction to stably levitate the rotating shaft. During rotation, the shaft experiences no mechanical friction whatsoever, resulting in high efficiency, zero wear, no maintenance required, and no need for lubricants. The air contained in the lubricant-free system is oil-free.
4. Magnetic levitation blowers in motor intelligent control systems typically employ vectorless variable-frequency control. By adjusting the frequency, the rotation of the permanent-magnet motor is controlled, thereby regulating the airflow of the blower to meet the requirements of various operating conditions. The intelligent control system can predict surge phenomena and achieve on-site control. Additionally, installing a GPRS system on the equipment enables remote monitoring and data transmission.
Magnetic levitation fan That’s all for the introduction from the manufacturer. I’m sure that after watching the presentation above, you now have a fresh understanding of the topic. If you still have any questions or areas you’re unclear about, feel free to reach out to us anytime! Well then, I wish you all a happy life!
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