The demand for multi-wing low-noise centrifugal fans continues to grow.

The demand for multi-wing low-noise centrifugal fans continues to grow.

Multi-wing low-noise centrifugal fans are energy-efficient ventilation devices widely used in major industrial production processes. As environmental protection requirements in industrial production continue to improve, the demand for multi-wing low-noise centrifugal fans is also increasing. While most users are familiar with the operation of multi-wing low-noise centrifugal fans, they may not be aware of their specific characteristics. Therefore, to aid in understanding the machinery, I briefly outline the relevant fundamentals. During operation, the working medium flows axially into the impeller of the multi-blade low-noise centrifugal fan. Upon entering the impeller, it transforms into radial motion perpendicular to the fan shaft. Through the action of the blades, the medium gains increased energy, thereby enhancing both static pressure and kinetic energy. When this increased energy sufficiently overcomes resistance, the medium can be transported smoothly. Multi-blade low-noise centrifugal fans essentially accelerate gas using a high-speed rotating impeller, then decelerate it while altering flow direction to convert kinetic energy into potential pressure energy. Within this device, gas enters the diffuser axially from the collector. As it flows through the diffuser, its direction changes to radial, then enters the plenum (volume). Within the diffuser, the gas changes flow direction and decelerates, converting kinetic energy into pressure energy. Pressure increase primarily occurs in the impeller, after which the diffusion process continues. Additionally, the outlet direction of a multi-blade low-noise centrifugal fan is determined by standing at the motor side facing the fan. When the impeller rotates clockwise, the outlet direction is correct. When the exhaust port is horizontal left: With right at 0°, the angle changes clockwise. When the propeller rotates counterclockwise, the outlet direction of the multi-blade low-noise centrifugal fan is left. The outlet moves horizontally to the right, 0 moves to the left, and the angle changes counterclockwise.