Compared with traditional large fans, what are t […]
Compared with traditional large fans, what are the advantages of permanent magnet industrial large fans?
A fan is an electrical appliance that every household needs to configure. Although some families with good conditions are now equipped with air conditioners, the fan still plays a very important role. Not only in family life, but also in industrial production, fans are also widely used. Large industrial fans play a very important role in ventilation and cooling, and many new varieties have been born in the development. The permanent magnet industrial fan is one of the new industrial fans. In addition to the advantages of traditional industrial large fans, this type of industrial large fan has better performance and a wider application range. So, compared with traditional industrial fans, what are the advantages of permanent magnet industrial fans? NorthGlass editor will share relevant content for you.
1. Strong torque
Torque is a special moment that makes an object rotate. The greater the torque, the stronger the power to drive the fan blades, the faster the fan speed and the higher the work efficiency. The permanent magnet direct drive industrial large fan uses a permanent magnet synchronous external rotor direct drive motor as the power core. Generally speaking, a torque of about 300N.m can be achieved to directly drive the operation of the industrial large fan, while the traditional industrial large fan can only achieve The starting torque of 30-50N.m must be amplified by the reducer to reach about 270N.m in order to drive the fan blades.
"NorthGlass Rhyme" series permanent magnet direct-drive industrial large fan motor torque is as high as 285N.m, and the actual input power of the motor is at least 15% lower than that of a traditional geared motor. The power density is high, the torque fluctuation is small, and the fan output air volume is large and stable.
2. Less loss
In the process of traditional large industrial fans using reducers to increase torque, the kinetic energy of the motor will lose energy through the reducer, and the loss is about 3-5%. Moreover, the effective power of a traditional industrial large fan can only reach about 78%, while the effective power of a permanent magnet direct-drive industrial large fan motor can easily reach 95% or even higher.
3. High efficiency and energy saving
The power of traditional industrial large fans with a blade diameter of 7.3 meters on the market is generally 1.5Kw. For the operation of the same diameter fan blades, the permanent magnet direct-drive industrial large fan only needs 1.2-1.3KW to meet the requirements. Therefore, the permanent magnet direct-drive industrial large fan has lower power consumption, saves energy and electricity costs, and is more cost-effective.
The advantages of permanent magnet industrial fans
4. Safe and reliable
Due to the use of reducers in traditional industrial large fans, once the power is cut off, the belt reducer will stop suddenly (just like a car suddenly stalls at high speed, the gearbox locks up), and the blades of large-diameter fans still have kinetic energy , This kinetic energy will cause the fan blades to run continuously, causing the fan blades to fall.
Permanent magnet direct drive large industrial fans do not have this problem. If the power is cut off, the coil of the motor will lose its magnetism, and the blades of the fan will slowly stop without shearing the joints of the blades, thus effectively avoiding the blades of the large fan of the traditional acceleration and deceleration machine due to power failure. Risk of falling.
5. Life extension
The noise of the geared motor of the traditional industrial large fan is more from the gear friction of the reducer part and the excitation noise of the motor itself, which not only produces noise pollution, but also weakens the performance of the motor and reduces the service life of the large industrial fan.
The permanent magnet direct-drive industrial fan motor successfully avoided the noise part of the geared motor, the noise standard is less than 40dB, and the magnetic steel is specially selected for low-speed high-torque motors with low temperature coefficient and magnetically stable rare-earth permanent magnet materials , The motor temperature rise is low, and the service life is more than 20 years.
The gearbox in the traditional industrial large fan AC gearbox needs to be regularly checked for lubrication, and there may be oil leakage. The direct-drive motor structure adopted by the "NorthGlass Rhyme" series of permanent magnet industrial large fans does not require a gearbox, and its synchronous wheel adopts a gapless taper fit, seamlessly docking with the synchronous belt, and the protection level can reach IP55, which is true. Maintenance-free.