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 in through the intake. As the blades of the centrifugal fan rotate, they exert dynamic force on the gas, increasing its pressure and speed. The gas is then expelled from the exhaust outlet along the blade channels due to 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 typically treated as an incompressible fluid. The gas treatment process of medium-pressure fans is completed within the same radial plane, hence the term "axial flow centrifugal fan" is also used for medium-pressure fans.

Technical Parameters: Among the technical specifications of medium-pressure fans, the most important factors include gas flow rate, pressure, power transmission, efficiency, and impeller speed, all of which are crucial considerations during the selection process. The gas flow rate of a medium-pressure fan represents the volume of gas that the fan can process in a unit of time, while the pressure of a medium-pressure fan refers to the internal gas pressure during its operation.

The efficiency of medium-pressure fans refers to the ratio between the shaft power of the fan and the effective power of the actual gas being processed. The total pressure efficiency of centrifugal fans is approximately 90%, and in the future development of centrifugal fans, efficiency values will be one of the goals that researchers further pursue.

Medium-pressure 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; for wind tunnel air sources and air cushion ship inflation and propulsion, etc.