Minor Abnormalities in Backward-Curved Centrifugal Fans That Should Not Be Overlooked

Minor Abnormalities in Backward-Curved Centrifugal Fans That Should Not Be Overlooked

Although it is understood that minor malfunctions in backward-curved centrifugal fans do not threaten the overall operational status of the equipment, users may overlook these minor issues because they are unaware that they can be the root cause of major problems. This applies equally to critical equipment such as backward-curved centrifugal fans—please do not underestimate these seemingly minor abnormalities. If not addressed promptly, the problems will only become more severe. Upon closer inspection, high-pressure fans still exhibit numerous performance anomalies, such as the following two scenarios. 1. Abnormalities in the bearings of backward-curved centrifugal fans, such as overheating, warping of the upper cover, distortion, or angular misalignment, can lead to bearing failure. Therefore, if such issues are detected, the best solution is to use self-aligning spherical roller bearings to resolve the problem. Secondly, in addition to the aforementioned phenomena, there is another issue that is difficult to detect. Specifically, the bearing clearance does not meet specifications. The internal clearance of the bearing is closely related to its tightness. As the temperature rises, if the bearing clearance gradually decreases, the heat generated by the bearing will exceed the heat dissipated, leading to a series of severe consequences. Both of the above situations require special attention. The failure rate of backward-curved centrifugal fans varies depending on the degree of attention paid to these issues.