HTFC fire cabinet centrifugal fan
Centrifugal fan is a machine that relies on the input mechanical energy
Keywords: centrifugal fan supplier | general fan manufacturer
Classification:
Civilian general purpose fan
Hotline:
HTFC fire cabinet centrifugal fan
Centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas, and it is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced air in boilers and industrial furnaces; cooling and ventilation in air-conditioning equipment and household appliances; drying and selection of grains; Wind tunnel wind source and hovercraft inflation and propulsion, etc.
According to the principle of converting kinetic energy into potential energy, the centrifugal fan uses a high-speed rotating impeller to accelerate the gas, then decelerates and changes 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 to radial as it flows through the impeller, and then enters the diffuser. In a diffuser, the gas changes the direction of flow and the pipe cross-sectional area increases to slow down the air flow, and this deceleration converts kinetic energy into pressure energy. The increase in pressure occurs mainly in the impeller and to a lesser extent in the expansion process. In a multistage centrifugal fan, a reflux is used to bring the air to the next impeller, creating a higher pressure.
The working principle of centrifugal fan is basically the same as that of turbine compressor, because the gas flow rate is low and the pressure changes little, and generally does not need to consider the change of gas specific volume, that is, the gas is treated as an incompressible fluid.
The centrifugal fan can be made into two types: right-hand and left-hand. From the side of the motor: the impeller rotates clockwise, which is called the right-hand rotating fan; The impeller rotates counterclockwise and is called a left-hand rotating fan.
The centrifugal fan is composed of a casing, a spindle, an impeller, a bearing transmission mechanism and a motor.
Chassis: made of steel plates, strong and reliable, can be divided into integral and semi-open, semi-open for easy access.
Impeller: It is composed of blades, curved front disc and flat rear disc.
Rotor: Static balance and dynamic balance should be done to ensure stable rotation and good performance.
Transmission part: It is composed of spindle, bearing box, rolling bearing and pulley (or coupling).
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