Why the Axial-Flow Fan should be modified by Frequency conversion and Common Air Volume and noise

1. FRP axial flow fan, what is the reference standard? What's the noise?

FRP axial-flow fan is a kind of axial flow fan, and is a common fan. The reference standard is GB1236-2000<<General Fan performance Test Standard>>. The test efficiency of the fan is 80-83%. But in actual use, it is lower, is 70-75%.

2. In the wall type axial flow fan, why to set up the fire proof louver tuyere?

The wall axial fan is installed by fixing the axial fan to the wall and opening the hole in the wall, so that the air can be sent out. Therefore, this kind of axial flow fan is called the wall axial fan. The aim is to isolate when a fire occurs to prevent fire and smoke from spreading, resulting in casualties or economic losses.

3. Why should the axial flow fan be reformed with frequency conversion?

The main purpose of the conversion transformation of axial flow fan is to realize the soft start of the motor and to realize the speed regulation. And provide protection from overcurrent, overvoltage, overload, etc. Because the starting current of axial fan will be higher than the rated current when starting, it will damage the motor and shorten its service life, so the fan should be reformed with frequency conversion to avoid these problems.http://www.jnblower.com/