Characteristics and application field of cross - flow fan

A cross-flow fan, also called a cross-flow fan, has a motor shaft that is perpendicular to the air entering the fan. The cross-flow fan has the following characteristics: 1, the cross-flow fan is to use a long cylindrical fan impeller to work, the diameter of the cylindrical fan blade is relatively large, because the diameter is large, in order to ensure the overall air circulation based on the use of low speed, so as to reduce the noise caused by high-speed operation. 2, the impeller of the fan to do dynamic balance: just like the car wheel to do dynamic balance, the wind wheel of the cross-flow fan also need to do this work, in short, is to maintain the balance of the wind wheel in the running state, reduce noise, and extend the life of the fan. Dynamic balancing is a time-consuming job. In fact, the end result may be to add a counterweight to some part of the wheel. But where exactly? How big is it? All these directly affect the service life of cross - flow fan. 3. The blades of the fan are carefully calculated, and the distance between the blades is deliberately disorganized, presenting a situation of "unequal distance" : this is also very simple, which is to try to make the audio generated by the rotating wind wheel and the air "irregular", becoming a "piece" of wind, rather than the wind concentrated on a certain frequency band. There are two kinds of noise, narrow band noise and wide band noise. The regular narrow band noise is easy to attract people's attention and make people upset. The broadband noise is close to the noise of nature, although it can not be eliminated, but relatively "listening" a little, let a person is not so upset. 4, fan blade manufacturing materials: The fan impeller in the fan is very long, such a bar-shaped fan blade if the use of inferior materials, can save a lot of costs, but not for long, will occur deformation, the whole fan blade is no longer in a straight line, but in the middle of the pendulous, you can imagine, such a pendulous fan blade in turn up, is what kind of high noise, And will drive the whole curtain machine vibration! 5, motor: the wind wheel is to rely on the motor to run, if the quality of the motor is poor, can not operate normally or start weak, it is not ok, if the quality of the motor is poor, it will also hear the motor issued by the "buzz" sound, is a torture. Cross-flow fans are widely used in air purifiers, air curtains, wine coolers, fireplaces, freezers, solariums, subways, harvesters and other equipment.