Operating Principle:

Common medium-pressure fans are centrifugal fans, with the impeller covered by a mechanical casing, and the center of the impeller being the intake. When the medium-pressure fan operates, the power equipment drives the impeller to rotate, drawing air into the intake. During the rotation of the centrifugal fan blades, they exert dynamic force on the gas, increasing its pressure and velocity, and the gas is discharged along the impeller channels from the exhaust port under the action of centrifugal force.

During operation, although the rotation of the impeller increases the pressure and velocity of the gas, the various change amounts are relatively small. Therefore, in the design and use of centrifugal fans, the gas is usually treated as an incompressible fluid. The gas processing of medium-pressure fans is all completed within the same radial plane, hence the medium-pressure fans are also known as radial flow centrifugal fans.

Technical Specifications: In the technical parameters of medium-pressure fans, the most important factors include gas flow rate, pressure, power transmission, efficiency, and impeller speed, all of which are crucial to consider during the selection process. The gas flow rate parameter of a medium-pressure fan represents the volume of gas that the fan can handle within a unit of time, while the pressure of a medium-pressure fan refers to the internal gas pressure during its operation.

The efficiency of a medium-pressure fan refers to the ratio between the shaft power of the fan and the effective power of the actual gas being handled. The full pressure efficiency of centrifugal fans is generally around 90%, and in the future development of centrifugal fans, efficiency values will be one of the goals researchers continue to pursue.

Centrifugal fans are widely used for dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; for ventilation and exhaust in boilers and industrial furnaces; for cooling and ventilation in air conditioning equipment and household appliances; for drying and selection of grains; and for air tunnel air sources and the inflation and propulsion of hovercrafts.