Centrifugal fan is based on the principle of kinetic energy conversion to potential energy, the use of high-speed rotation of the impeller to accelerate the gas, and then slow down, change the flow, the kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, and the gas flows into the radial direction through the impeller and then enters the diffuser.

In the diffuser, the gas changes the flow direction to cause deceleration, which slows the kinetic energy into pressure energy. The increase in pressure mainly occurs in the impeller, followed by the expansion process. In a multistage centrifugal fan, the flow is introduced into the next impeller with a reflux, resulting in a higher pressure. I believe that non-professionals on the centrifugal fan or do not know, then the following Xiaobian first to take you to understand the structure under it.

Centrifugal fan from the chassis, spindle, impeller, bearing transmission and electrical components.

1, the chassis: made of steel from the solid and reliable, for the sub-type and semi-open, semi-open to facilitate maintenance.

2, impeller: from the leaves, curved front plate and plate composition.

3, the rotor: should be done static balance and dynamic balance, to ensure smooth rotation, good performance.

4, the transmission part: a spindle, bearing box, rolling bearing and pulley (or coupling) composition.

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