How to control the noise level of diagonal flow duct fans?

Inclined flow duct fans are often required to control noise levels in industrial applications to meet environmental noise standards and provide a comfortable working environment. Noise control is particularly important for various industrial sites, including but not limited to office buildings, hospitals, schools, factories, etc. The following are common methods for controlling noise levels from diagonal flow duct fans:

Optimize fan design: First, noise levels can be reduced by optimizing the design of diagonal flow duct fans. Adopting streamlined impeller design, reducing the gap between the impeller and the air inlet, and smoothing the inner wall of the air duct can reduce the turbulent noise of the air flow and the noise caused by mechanical vibration.

Reduce the rotor speed: Controlling the rotor speed of the diagonal flow duct fan is one of the effective ways to reduce noise. Reducing the rotor speed reduces the friction between the blades and the air, thereby reducing noise levels. However, it should be noted that too low a rotational speed may affect the performance of the fan, so the rotational speed needs to be appropriately reduced while ensuring performance.

Use sound-insulating materials: Installing sound-absorbing materials or soundproof enclosures around the fan can effectively reduce the transmission and spread of noise. Sound-absorbing materials can absorb noise energy, and soundproof covers can block the propagation path of noise, thereby reducing noise levels in the external environment.

Reduce air circulation noise: The noise generated during air circulation is one of the main sources of fan noise in diagonal flow ducts. Noise generated during air circulation can be reduced by optimizing pipeline design, reducing bends and branches of pipelines, and using mufflers.

Regular maintenance: Regular maintenance of diagonal flow duct fans is one of the important means to reduce noise. Keeping the fan clean, regularly inspecting and replacing worn parts, adjusting and lubricating bearings, etc. can reduce mechanical vibration and operating noise.

Choose a low-noise fan: When choosing a diagonal flow duct fan, consider a specially designed low-noise fan model. These fans often use advanced design and manufacturing techniques, as well as high-quality materials, to reduce noise while maintaining good performance.

Through various measures such as optimizing design, reducing rotation speed, using sound insulation materials, reducing air circulation noise, regular maintenance and selecting low-noise fans, the noise level of diagonal flow duct fans can be effectively controlled and a quiet and comfortable working environment can be provided.