A cooling fan noise of main three sources
bearing friction, the vibration of the blade, the wind cutting noise.
1, the bearing friction and vibration, noise, not only shorten device life and impact performance, reduce energy use efficiency.
2, blade vibration: generally USES plastic fan blade has a certain toughness, can withstand a degree of physical deformation, also in promoting in vibration due to external forces in the air, but generally small, another serious vibration is as uneven distribution quality of blades, the center of mass and is caused by eccentric axis core, when the door leaf area ( Quality) Or eccentricity larger cases, may drive the fan vibration radiator, even then spread to the whole case, if there is such a ten-day now, should doubt fan quality and working condition. Wenling city tong chi auto air conditioning manufacturing co. , LTD is specialized in the cooling fan.
3, the wind cut: interference with each other between the air flow around an object, friction, leaf blade, and the points of turbulence of the air, periodic supply air pulse power, etc. , will produce noise, the faster the air flow velocity, turbulence, the more often wind noise is bigger, and will increase with the increase of wind speed was accelerated, ordinary will be the effects on the air. The morning a cooling fan air volume, low noise, long service life.