The characteristics of cross-flow fans and their impellers are characterized by a multi-blade and long cylindrical shape. Considering that the airflow inside the impeller is relatively complex, and the airflow velocity is in an unstable state, there are also vortices inside it. It is the presence of these vortices that results in a circulating flow at the output end of the impeller, causing the airflow lines inside the impeller to take on an arc shape. Next, let's briefly analyze the characteristics of this type of fan:
Cross-flow fan blades are carefully designed to effectively reduce noise.
After careful calculation, the spacing between the fan blades is irregular, which results in irregular sound generated by the impeller and the air. This creates a broadband noise rather than concentrated noise in a specific frequency range. This type of broadband noise is relatively close to the natural environment and is less likely to be annoying.
High-quality fan impellers have a longer lifespan.
If low-quality materials are used to manufacture cross-flow fan blades, it may reduce costs for businesses, but the lifespan is not long. Deformation can occur relatively quickly. Since the entire blade is not in a straight line but sags in the middle, it's easy to imagine the terrifying noise and pronounced vibration that can occur when these sagging blades rotate at high speeds. In addition, if the motor quality is poor, it may not operate properly and may even exhibit signs of weakness during operation. In summary, the importance of materials has a significant impact on the lifespan of the equipment.
