How to minimize the noise of double inlet radial centrifugal fans?

- Jan 03, 2018-

Double inlet radial centrifugal fan noise will not only affect the performance of its own play, but also affect the site's operating environment. So, is there any way to reduce the operating noise of double inlet radial centrifugal fan as much as possible?


In fact, there are many aspects to the source of noise of a dual-inlet radial centrifugal fan, so we need to take targeted measures according to the actual situation. For example, if the noise from the chassis and motor, then you can install noise enclosures to solve. In other words, the fan unit alone placed in the sound insulation room, so as to achieve the purpose of noise reduction.


Second, before using dual inlet radial centrifugal fans, it is imperative to perform rigorous static and dynamic balancing of rotating parts such as impellers, crankshafts, pulleys and couplings. Confirm that it can be assembled after passing the certification and be allowed to leave the factory. Also pay attention to select the appropriate motor cooling fan, and pay attention to adjust the gap between the blade and the air guide ring, effectively reducing the motor cooling fan blade rotation noise.


Thirdly, during daily use, the user needs to arrange for the staff to regularly check whether the coupling bolts and anchor bolts of each component of the double-inlet centrifugal centrifugal fan are loose; whether the bearing is abnormally worn or poorly lubricated; whether the transmission belt is tight or not. If found unusual circumstances, it should immediately stop the car.


The fourth point, in the process of installation, but also need to pay attention to do a good job of double import radial centrifugal fan and the foundation of the fixed. Minimize the vibrations generated by the foundation.


In addition, it is also possible to install a section of rubber hose at the inlet and outlet of the double-inlet radial centrifugal fan to maximize the vibration of the double-inlet radial centrifugal fan to the air duct at the rubber hose Weakened or eliminated.