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Centrifugal Fan Clean State

Wuxi JN Fan Co.,Ltd | Updated: Oct 10, 2017

The fan adopts the single suction d type transmission structure, Centrifugal Fan which is connected with the fan and the motor by the coupling. Fan body mainly by the casing, inlet, rotor group (impeller and spindle), bearing box, coupling and other components. (F-type transmission It is a double support two bearing box, single suction has a intake chamber, double suction has two into the wind room.) C, Centrifugal Fan B-type transmission has the active wheel and the passive wheel.

Units in addition to the fan body, according to user needs, can also be equipped with a variety of external support, Common has: motor, adjustment door, the whole bracket, electric actuator, muffler and so on.

At the beginning of the operation of the impeller and all regular inspection, as long as a chance, must check whether the impeller cracks, wear, Centrifugal Fan dust and other defects.

As long as it is possible, the impeller must keep clean state, and regularly with wire brush to the above dust and rust skin, and so on, because with the increase in running time, these dust because it is not possible to attach to the impeller evenly, and caused the impeller balance damage, causing the rotor vibration.

If the impeller is repaired, Centrifugal Fan it needs to be balanced again. If you have the condition, you can use the Portable test balance instrument to balance the scene. Before moving the balance, you must check whether all the fastening bolts are tightened. Because the impeller has been running in an unbalanced state for some time, these bolts may have been loose.

In addition to regular inspection of the casing and the inside of the intake chamber has serious wear, removal of serious dust accumulation, these parts do not carry out other special maintenance.

The regular inspection of all the fastening bolts are fastened, to the pressure of the bolt part of the fan, the bottom of the foot of the butterfly spring pressure to the installation height specified in the drawing.

Centrifugal fan is based on kinetic energy conversion to the principle of potential energy, the use of high-speed rotating impeller to accelerate the gas, then deceleration, change the flow, Centrifugal Fan so that kinetic energy into potential energy (pressure). In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, and the gas flows through the impeller into a radial direction and then into the diffuser.

In the diffuser, Centrifugal Fan the gas changes the flow direction and causes the deceleration, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller, secondly occurs in the expansion process. In multi-stage centrifugal fan, the flow of air into the next impeller with a backflow, resulting in higher pressure.

Centrifugal fan working principle and turbine compressor are basically the same, because the gas flow rate is low, the pressure changes little, Centrifugal Fan generally do not need to consider the gas ratio changes, that is, the gas as incompressible fluid treatment.

The centrifugal fan can be made into two types-right and left. From the side of the motor face, impeller clockwise rotation, known as the right rotating fan, impeller counterclockwise rotation, known as the left rotating fan.


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