[Car cooling fan] Introduction of two major characteristics

1. The automobile heat dissipation fan works with a long cylindrical air duct (the diameter of the fan blades of the air duct is relatively large), because the diameter is large, it can be protected u003cbru003eUse a lower speed based on the overall air circulation, thereby reducing the noise caused by high-speed operation; u003cbru003e2. The impellers of automobile cooling fans are carefully calculated, and the distance between the fan blades is deliberately disordered, presenting a state of 'unequal distance': why is it not like a DC fan blade? Isometric? This is because the audio generated by the rotating wind wheel and the air is 'irregularThere are two types of noise, narrow-band noise and broadband noise. Regular narrow-band noise is easy to attract people’s attention and annoys people; while broadband noise is relatively close to the noise situation in nature, although it cannot be eliminated, it is relatively 'hard to hear' and makes people Not that upset. u003cbru003e u003cbru003eRelated links: u003cbru003eHigh temperature resistant AC fan http:///products-detail.asp?cpidu003d80 u003cbru003eCar AC Fan http:///products-detail.asp?cpidu003d81