The small editor of centrifugal fan manufacturer introduces what is industrial centrifugal fan
Working principle of industrial centrifugal fan:
According to the principle of converting kinetic energy into potential energy, the industrial centrifugal fan uses the high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes into the radial direction when it flows through the impeller, and then enters the diffuser. In the diffuser, the gas changes the flow direction and the increase of the pipe section area slows down the gas flow, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, followed by the expansion process. In the multistage centrifugal fan, a reflux device is used to make the air flow into the next impeller, resulting in higher pressure.
Effect characteristics of industrial centrifugal fan:
Industrial centrifugal fan is essentially a variable flow and constant pressure device. When the rotating speed is constant, the pressure-flow theoretical curve of the centrifugal fan should be a straight line. Due to internal loss, the actual characteristic curve is curved. The pressure generated in the centrifugal fan is greatly affected by the change of inlet temperature or density. For a given intake volume, the pressure generated by higher intake temperature (low air density) is lower. For a given pressure and flow characteristic curve, there is a power and flow characteristic curve. When the blower operates at a constant speed, for a given flow rate, the required power increases with the decrease of inlet air temperature.