Adjustable moving blade axial flow fan:
The adjustable blade axial flow fan uses a hydraulic cylinder to adjust the angle of the blades when the fan is running, thereby changing the load of the fan.
The main features of the adjustable blade axial flow fan:
- Large efficient area
- Adjusted by a hydraulic cylinder, the action is accurate and rapid.
- The fan has a compact structure, small in size, and is lightweight.
- high degree of automation
Stator blade adjustable axial flow fan:
The adjustable stator blade axial flow fan is a mixed flow fan. The fan combines the characteristics of axial flow and centrifugal fans. When the airflow flows through the hub of the mixed flow fan, the gas is not only accelerated by the axial acceleration of the impeller but also affected by the centrifugal direction of the impeller force.
The main features of adjustable stator blade axial flow fans:
- The high-efficiency area is small.
- Relying on the actuator to adjust the stator vane to change the load, the adjustment accuracy is low.
- The structure is relatively simple.
- For applications with severe wear and tear
- high degree of automation
Fixed blade axial flow fan:
Fixed blade axial flow fans, whose blades cannot be adjusted, are mainly used in places where the wind pressure and air volume are not large, such as subway tunnel fans.
Because the fixed blade axial flow fan is smaller, the impeller is usually hung directly on the motor shaft.
When fans are classified according to pressure, those with a pressure lower than 15kPa are called ventilators, those with a pressure between 15kPa and 350kPa are called blowers, and those with a pressure higher than 350kPa are called compressors.
