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Application technique and expansion process of centrifugal fan.

Jun 29, 2019

According to the principle of converting kinetic energy into potential energy, centrifugal fan accelerates the gas by using a high-speed rotating impeller, then slows down, changes the flow direction, and converts kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, and then changes into a radial direction when the gas flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the flow direction and the cross section area of the pipeline increases and slows down the airflow, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, followed by the pressure expansion process. In the multistage centrifugal fan, the air flow is used to enter the next impeller, resulting in higher pressure.


Application skills of centrifugal Fan


When starting the centrifugal fan, there are many reasons if the start-up failure or the start-up time is too long. If the motor cannot be dragged, check the set value of the safety mechanism; If the rated power of the motor is too low, replace the motor, if the starting procedure is incorrect, adjust the starting equipment, if the power consumption is too large when starting, verify whether the gas flow control mechanism is in the closed position when starting, if the rotor is stuck, use the hand disk fan to check and investigate the cause of the jam (friction, obstacles, etc.), if the voltage is too low at the junction of the motor, Check the power cord voltage if the loss is too large, increase the power cord. In addition, if the centrifugal fan is used, one of the common problems is the vibration of the fan. If you want to solve this problem fundamentally, the speed of the fan can be reduced. www.jnblower.com