A fan is a mechanical device used for transporting gas, which can convert electric machinery into gas energy. This type of fan can be divided into axial flow fans, centrifugal fans, boiler fans, industrial furnace fans, coal powder fans, diagonal flow fans, etc. However, it is difficult to calculate the resistance of the pipeline network when designing various types of fans, and various problems that may be encountered in long-term work need to be considered during design. Therefore, manufacturers generally use the maximum air volume and air pressure margin of the system as the basis for selection.
During the operation of the fan, we can meet the production process's requirements for air volume by adjusting the opening of the air damper and air duct baffle. This method is called throttling regulation. In the process of throttling regulation, the stable characteristics of the fan remain unchanged, mainly by reducing the opening of the air damper and baffle to increase the suction force of the pipeline. However, this method has a high power loss, which will increase our losses and result in higher operating costs.
If we use a frequency converter when renovating the fan, it can calculate and output the actual active power based on the variable torque characteristics of the fan, which can achieve automatic energy-saving operation. Unlike the above methods, its energy-saving effect is better. Moreover, using a frequency converter can reduce the impact of the motor on the power grid during operation, and can also adjust the carrier frequency online to change the working noise of the motor, which can improve the reliability and service life of the system.
The use of a frequency converter in fan renovation will not cause tripping even when there is a load during operation, and it will provide protection against undervoltage, overload, overcurrent, overvoltage, and overheating, making it safer to use. If you need any fan modification, please feel free to contact us.
