Inlet Rings of the Backward Centrifugal Fan (also known as inlet nozzle or shroud) is a component installed at the fan inlet, it has the following functions:

1.Guided air flow: The inlet ring can guide the air flow direction at the inlet of the centrifugal fan, which helps to improve the air intake efficiency of the fan.

2.Increase wind pressure: The inlet ring can increase the pressure of the wind flow, and by changing the flow path and speed of the wind flow, it can generate higher pressure at the outlet. This helps overcome drag and pressure loss in the system, providing stronger wind power.

3.Reduce noise: The inlet ring can reduce the noise caused by the collision between the wind flow and the surrounding environment. Guides the air flow into the fan inlet in a smoother manner, reducing the generation of eddies and turbulence, thereby reducing noise levels.

4.Increased Efficiency: By optimizing the direction and speed of air flow, inlet ring increases the efficiency of wind turbines. It reduces energy loss and unnecessary turbulence, making the energy conversion of fans more efficient.

Generally speaking, the inlet ring plays the role of guiding, boosting, noise reduction and improving efficiency in the backward centrifugal fan, which is of great significance for optimizing the performance and application effect of the fan.

Suggestions to my friends: The backward centrifugal fan must be used with the inlet ring, otherwise the pressure and flow loss will be very large.

There are also certain requirements for the specifications and installation clearance of the inlet ring. Please follow me on how to choose and install a suitable inlet ring and more real stuff about fans.