The 11-62 centrifugal fan adopts a multi-objective optimization design method based on noise, efficiency, and various aerodynamic parameters during the design process, achieving optimal performance matching of the entire machine and having good aerodynamic performance. The impeller undergoes strict dynamic balance correction, resulting in smooth operation, low noise, minimal vibration, and long service life. Widely used for kitchen exhaust, smoke extraction or ventilation in public places such as unit canteens, hotels, restaurants, and food shops, and suitable for use in production equipment such as grain machinery, chemical machinery, plastic machinery, etc.