The noise of the casing and the motor can be solved by adding a sound insulation cover, placing the blower in an independent blower sound isolation room, and carrying out sound-absorbing and sound-isolating treatments in the blower room.
The louvers outside the ground floor use anechoic louvers as much as possible.
Fan impeller, fan shaft, pulley and coupling and other rotating parts shall be strictly static balance and dynamic balance correction, qualified before assembling into a table. Permitted to leave the factory, but also should be a reasonable choice of motor cooling fan blade and the gap between the wind guide ring, effectively reducing the motor cooling fan blade rotation noise.
Regularly check whether the fan parts of the coupling bolts and ground bolts are loose, whether the bearing is abnormal wear or poor lubrication. Whether the transmission belt is tensioned, etc.. If abnormalities are found, stop immediately to remove.
Installation, the fan and reinforced concrete foundation should be padded rubber, cork board or felt board and other soft materials. So that the centrifugal fan transmitted to the reinforced concrete foundation vibration is minimized or eliminated.
In the fan inlet and outlet installation of a section of rubber hose, centrifugal fan can be transmitted to the air duct vibration in the rubber hose at the maximum weakened or eliminated
Reasonable selection of motor cooling fan blade shape and diameter and other parameters. Effectively reduce the motor cooling fan eddy current noise.
Fan air inlet and exhaust port installation muffler muffler is the use of porous
Installed outside the fan exhaust muffler, built-in muffler inserts, so that the noise in the special structure of the muffler cut. Muffler is to reduce the aerodynamic equipment inlet and outlet radiation or along the pipe to pass the effective measures of noise.
The fan hangs with damping spring hanger damper.
Targeted design according to the sound source object, noise characteristics, noise reduction requirements, process conditions and installation location and other factors to ensure that a good muffling and noise reduction effect.
There are many eddy currents in the arc section. Vortex will be with the fan worm shell and air inlet parts to produce many frequent collision and the formation of aerodynamic noise. Can be located in the fan inlet fan snail shell inside the periphery of the design and production that is the addition of fairing ring and baffle, can effectively prevent the formation of vortex airflow in the fan inlet, thereby reducing the centrifugal fan generated aerodynamic noise.