PMSM Direct Drive Turbo Blower supplier china introduces the air volume adjustment method of Low price Centrifugal Fan?

[Abstract]:
Sometimes due to the special needs of the work, it is necessary to adjust the air volume of the Low price Centrifugal Fan so that the air volume meets the required conditions.

Sometimes due to the special needs of the work, it is necessary to adjust the air volume of the Low price Centrifugal Fan so that the air volume meets the required conditions. So do you know what its air volume adjustment method is? Let’s follow the editor of PMSM Direct Drive Turbo Blower supplier china to have a simple understanding!
At present, there are two ways to adjust the air volume of a fan, one is air valve adjustment, and the other is air inlet blade adjustment. Each adjustment method has a different adjustment effect, such as: air valve adjustment and outlet air valve adjustment: change the characteristics of the pipe network instead of the characteristics of the Low price Centrifugal Fan. The air volume adjustment range is usually under all conditions of the fan's rated performance curve. Because the method of artificially increasing the resistance of the pipe network is used to change the characteristics of the pipe network, the additional resistance generated by the closing of the small air valve consumes the pressure drop, and the adjustment economy is poor. Air inlet valve adjustment: When the pipeline is set on the suction side of the fan, the adjustment principle is the same as that of the outlet valve; when the pipeline is set on the discharge side of the fan, the performance curve of the fan is changed by changing the inlet pressure of the fan. Fans, so tuning is economical. The adjustment of the spiral air valve changes the characteristics of the fan by changing the outlet area of ​​the fan. Compared with reducing the air volume, the power change is small, and the energy saving effect is not significant.


In principle, these two adjustment methods can be used under all conditions under the rated curve to move the surge point in the direction of small flow. Therefore, it is widely used in fixed speed Low price Centrifugal Fan. The inlet blade adjustment is to adjust the blades to change the flow direction of the suction impeller and change the performance curve of the fan. Low price Centrifugal Fan's positive winding adjustment of intake air flow can reach all operating conditions below the performance curve when the intake blade angle is zero. The negative winding adjustment of the intake air flow can increase the pressure and flow of the fan, but the adjustment range is limited.
The editor of PMSM Direct Drive Turbo Blower supplier china reminds everyone that when you need to adjust the air volume of the Low price Centrifugal Fan, you can choose a more suitable method according to the structure and use requirements of the fan, so that the fan can reach the target without damaging the fan body. Good operating condition. Increase the air volume to meet the requirements of its working conditions.