Large industrial ceiling fans of different series, differences between different large industrial fans.
1. Different motors
The coverage area of industrial large fan can reach 1400 m2. This is to be seen by the specific air volume according to different types of industrial fans. But the electricity needed is 1.5 hours, some only 1.3 degrees, all of which are from the heart motor of industrial fans. There are three main motors for industrial fans, three-phase asynchronous motor and permanent magnet direct drive motor. While the permanent magnet direct drive motor is divided into external rotor permanent magnet direct drive motor and inner rotor permanent magnet direct drive motor. Due to the different composition and performance, the effect of participating in the work of large industrial fans will be different.
2. Different service life
Different large industrial fans have different service life because of different motors. For example, the service life of three-phase asynchronous motor is usually 1-3 years. Because the three-phase asynchronous motor drives the transmission shaft to rotate through reducer, there is gear in the middle, which will cause friction and friction will have a loss, so the service life is very short. Some large industrial fans have a longer service life, because the rotor motor in permanent magnet direct drive does not need reducer and drive shaft, and drives the rotor to rotate directly through magnetic field, without friction and loss. Therefore, the service life of the rotor motor in the permanent magnet direct drive can reach 15 years or more normally.
Industrial fan
3. Different energy efficiency
Energy efficiency is the efficiency of large industrial fans, and the working efficiency of large industrial fans is also the standard to judge the quality of large industrial fans. Because everyone wants to use less energy consumption to obtain higher efficiency, however, different large industrial fans work efficiency is different. Some industrial fans are driven by reducer and drive the drive shaft. In this process, friction will consume a part of power, so the energy efficiency of such large industrial fans is relatively low. Some industrial fans can achieve more than 95% energy efficiency under the same conditions. Therefore, reducing the energy consumption of large industrial fans and improving the energy efficiency of large industrial fans become the trend of the development of large industrial fans.
4. Noise size is different
Noise is a very big problem. The noise is mainly caused by friction effect of large industrial fans. Some fans will have a relatively large noise due to the working principle. Moreover, the longer they are used, the greater the noise will be. There are some industrial fans, because the motor has no friction, so it has very little noise, which belongs to sleep level, very quiet. This can maintain a quiet working environment, will not affect the physical and mental health and work efficiency of employees, nor affect the image of an enterprise.
5. Different protection levels
The protection level is also an important factor determining the quality of a large industrial fan. Some large industrial fans have heat dissipation holes in their shell. Although it can be well cooled, it also increases the chances of dust and water entering. Such dust enters the motor, which needs to be maintained frequently, otherwise the service life of industrial fans will be reduced. Some large industrial fans are designed to insulate dust from entering the motor and avoid the impact on the motor. And waterproof can reach water splashing on the above will not enter the motor, very safe. Therefore, the permanent magnet direct drive rotor motor can do without maintenance, can save a large amount of maintenance costs.
6. Different security
Some industrial fans, if they encounter sudden power failure or power failure, the reducer will suddenly lock up, but the wind blade is still rotating, and the speed of blade tip can reach 17-19 M / s. This results in shear forces between the blades and petioles. The bolts connecting the petiole and the air vane will be loose, which will cause the wind blade to fall off or break seriously. This is very dangerous. Obviously, the safety of the fan is not high. Some industrial fans are rotating by magnetic field. If it is in case of sudden power failure or power failure, the rotor inside will rotate slowly and stop slowly, so that the connection between the wind blade and the petiole will not be loose and the risk of falling off and breaking of the wind blade will occur.