Reasonable selection of motor cooling fan blade shape and diameter and other parameters. Effectively reduce the eddy current noise of the motor cooling fan.
Fan air inlet and exhaust outlet 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 construction of the muffler through the 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. I hope to help you.
(The above is organized by the first Pu electromechanical provided)