Causes and Solutions for Overheating in Multi-Blade Centrifugal Fans

Causes and Solutions for Overheating in Multi-Blade Centrifugal Fans

Multi-blade centrifugal fans are used for ventilation, dust removal, and the discharge of hot air in environments such as factories, mines, tunnels, and cooling towers. Excessive equipment temperature can cause pipe joints to age prematurely and shorten the service life of the equipment due to thermal stress. Multi-blade centrifugal fans require stability in both intake and discharge. If the inlet and outlet diameters are too small, heating becomes uneven, causing temperatures to rise. Prolonged operation of the fan leads to increased motor temperature. Naturally, the surrounding air heats up, resulting in excessively high ambient temperatures. When multi-wing centrifugal fans and high-pressure vortex pumps are in operation, temperatures typically do not rise significantly. However, if the fan’s temperature exceeds the specified operating pressure range, temperatures will rise more rapidly. The compressed air generated by the high-pressure vortex pump creates high pressure during operation, producing additional heat. The outlet temperature is higher than that of the surrounding air. The higher the air pressure of the high-pressure vortex pump, the greater the heat generated. As heat increases, the motor’s output rises, leading to higher temperatures. To prevent overheating of multi-blade centrifugal fans, it is essential to strengthen operational management rather than subjecting them to excessive strain. Strict adherence to operating procedures is required during the startup and operation of multi-blade centrifugal fans, particularly in high-temperature environments such as boiler systems. The impeller blades feature a reinforced surface to enhance wear resistance. To improve durability and reduce wear, surface treatment is necessary for working surfaces or components subject to significant blade wear.