Operating Principle:

Common medium-pressure fans are centrifugal fans, with the impeller covered by a mechanical housing and the center of the impeller being the inlet. When the medium-pressure fan operates, the power equipment drives the impeller to rotate, drawing air in through the inlet. During rotation, the blades of the centrifugal fan impart dynamic force to the gas, increasing its pressure and speed, and the gas is ejected from the outlet along the blade channel 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, gases are typically treated as incompressible fluids. The gas treatment process of medium-pressure fans is always completed within the same radial plane, hence they are also known as radial flow centrifugal fans.

Technical Parameters: In the technical specifications of medium-pressure fans, the most important factors to consider include gas flow rate, pressure, power output, efficiency, and impeller speed, all of which are crucial during the selection process. The gas flow rate parameter of a medium-pressure fan represents the volume of gas the fan can process in a unit of time, while the pressure refers to the internal gas pressure within the fan during 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 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 researchers will further pursue.

Medium-pressure fans are widely used for dust extraction and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; ventilation and exhaust in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and conveying of grains; wind tunnel air supply and air cushion ship inflation and propulsion, etc.