Use and characteristics of cross flow fan

The so-called cross flow fan is when the air enters the fan, it is perpendicular to the moter shaft. It has these characteristics:

1) The cross flow fan uses a relatively long barrel-shaped fan impeller to work. The diameter of the barrel-shaped fan blade is relatively large. Because of the large diameter, it can use a relatively low speed on the basis of ensuring the overall air ciculation. Therefore, the noise caused by high-speed operation is reduced; the impeller of th cross flow fan is cylindrical, and the impeller of the same diameter can be arbitrarily selected according to different needs in the axial length of the impeller,without affctiong the gas flow state.

2) The air flow of the cross flow fan flows in from one side of the outer edge of the impeller and flows out on the other side. The air flow is affected by the two forces of the blades, so the air flow can reach a long distance, the air flow is large, and the noise is relatively low;

3) The cross-flow fan has a narrow and ong air outlet section, and the air is evenly dicsharged over the entire length of the impeller. It is suitable for in stallation in various flat electrical equipment; the fan blades are carefully calculated and deliberately The distance between the two is disorderly and presents a state of "unequal distance": this is also very simple, it is to try to make the audio generated by the rotating wind wheel and the air "irregular", become "a piece of wind"instead of focusing on a certain The wind on the frequency band. There 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 and broadband noise. Regular narrow-band noise is eas to attract people' s attention and annoys people; while broadband noise is relatively close to the noise situation in nature, although is cannot be eliminated, it is relativel "soundproof" and makes people Not that upset.

4) The cross flow fan is forced to bend in the impeller due to the airflow, so the head loss is relatively large and the efficiency is low; a high-qualit moter should be used: the wind wheel is operated by the moter. If the moter is of poor quality, it will not work properly. It' s impossible to run or start weakly. If the quality of the moter is poor, the humming sound of the moter will be heard, which is even more toture.