Friction Inside High-Temperature Axial Fans and Proper Usage Methods

Friction Inside High-Temperature Axial Fans and Proper Usage Methods

The first use of a high-temperature axial fan marks the beginning. If startup fails, the startup time may be prolonged. There are many reasons for this. If the high-temperature axial fan cannot drive the motor, check the settings of the safety mechanism. If the motor’s rated power is too low, replace the motor. If the startup procedure is incorrect, adjust the startup If power consumption is excessively high during startup, verify that the gas flow control mechanism is in the closed position. If the rotor does not move, manually rotate the high-temperature axial fan to identify the cause of the immobility (friction, obstructions, etc.). If the motor supply voltage is too low, check the power line voltage; if voltage drop is excessive, increase the power line capacity. In most cases, users will notice that the impeller is constantly wasting energy. Gas circulates due to leakage between the front cover and the collector assembly. Between the front cover and the collector of the high-temperature axial fan, this phenomenon can be significantly reduced to ensure the reliability of the fan’s rotation. A common issue with high-temperature axial fans is vibration. Fundamentally resolving this problem is not a simple task, but reducing the fan speed is an effective method, and the results of this approach are significant. However, users must determine the appropriate method based on specific conditions. Observation of the high-temperature axial fan’s operational state reveals varying degrees of internal friction, direct component damage, and a decline in performance. The reasons for this are being investigated. There are numerous potential causes of internal friction in high-temperature axial fans. One factor may relate to the impeller. When the impeller makes oblique contact with the housing or the housing lacks sufficient rigidity, the impeller wobbles from side to side, causing friction. Additionally, it could result from the propeller’s front plate colliding with the collector. Properly adjusting the clearance between the propeller’s front plate and the collector can mitigate this issue. Friction also occurs when the propeller is distorted or uneven. The seal ring of the high-temperature axial fan may also collide with the sealing groove. Simply replacing the seal ring can adjust the clearance between the seal ring and the sealing groove.