The cross flow fan has the following characteristics:
1. The cross flow fan uses the long rotor of the cylindrical fan to work. This cylindrical fan blade has a relatively large diameter. Due to the large diameter, on the basis of ensuring the overall air circulation, relatively low speed can be used to reduce the noise generated by high-speed operation.
2. The rotor of the fan has been dynamically balanced: just as the wheel must be dynamically balanced, the wheel of the transverse fan must also be dynamically balanced. In short, it is to maintain the balance of the wind turbine under working conditions, reduce noise and extend the life of the fan. Dynamic balancing is a time-consuming task. In fact, the effect may be to add counterweights to wind turbine components. But where? How big is it? This directly affects the service life of the transverse fan.
3. After accurate calculation of fan blades, the distance between fan blades is intentionally disordered, presenting a situation of "uneven distance": it is also very simple, that is, efforts are made to make the sound generated by rotating wind wheels and air "irregular", become "a wind sound", rather than the sound of wind on a specific frequency band in the scene. There are two types of noise: narrowband noise and broadband noise. Conventional narrowband noise often attracts people's attention and annoys them; Broadband noise is similar to natural noise. Although it cannot be eliminated, it is relatively "persistent", which makes people less nervous.
4. Fan blade production material: the fan rotor in the fan is very long. If the bucket fan blades are made of inferior materials, a large amount of costs can be saved. However, it will deform soon after rotation. The whole fan blade is no longer a straight line, but falls in the middle. You can imagine how loud the falling sound is when the fan blade rotates, which will drive the whole fan curtain to vibrate!
5. Engine: the wind wheel depends on the motor. If the engine quality is poor, it will not work properly or will not start without power. If the engine quality is poor, you will hear the "noise" of the engine, which is more painful.
Cross flow fan is widely used in air purifier, air curtain, wine cooler, fireplace, freezer, solarium, instrument, combine and other equipment.
DC fan, EC fan, CPU heat sink