English
The noise level of industrial factory fans varies significantly depending on the product type, installation method, and usage conditions. Overall, they can be divided into two tiers: traditional industrial fans and new generation energy-saving industrial fans：
Traditional industrial fans, such as axial fans and floor standing industrial fans, typically have high power, high speed, and relatively noticeable noise. The noise level during operation is generally around 70-95 decibels (dB). The main sources of noise are high-speed rotating fan blades and air friction, motor operation vibration, and resonance noise caused by unstable installation. In a large factory building, if multiple machines are turned on at the same time, the noise accumulation will cause certain interference to the on-site operators.
The new generation of large industrial ceiling fans (permanent magnet synchronous motor model) is currently the mainstream upgraded product for factory ventilation, with the core advantage of low noise. It adopts large diameter fan blades (up to 7.3 meters in diameter), low-speed design, combined with permanent magnet synchronous motor and shock-absorbing installation structure. The noise during operation is usually controlled at 45-65 decibels (dB), which is equivalent to the sound of normal conversation and will not interfere with worker operation and equipment inspection. Some silent models can even be close to the fan without obvious abnormal noise.
In addition, the noise level is closely related to the installation quality: unstable fixed brackets and unbalanced blade dynamic balance can cause additional resonance noise during operation; Standardized installation and regular maintenance (such as cleaning dust from fan blades and tightening screws) can effectively reduce noise.
