The Centrifugal fan is the machinery what will improve the pressure side by side to send gas. It is a kind of driven fluid machinery. Centrifugal fan is widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and the structure of the ventilation, dust and cooling; The ventilation of the boilers and industrial furnaces and induced wind; Air conditioning equipment; Household appliances in cooling and ventilation; Grain drying and submitted; Wind tunnel and become a hovercraft inflatable and propulsion, etc.

  Working principle

Centrifugal fan is according to the principle of kinetic energy converted to potential energy. To use of high-speed rotation of the impeller speed, The gas will speed up and then slow down. To change the gas flow direction, the kinetic energy is converted into potential energy (pressure). In single stage centrifugal fan, the gas from the axial impeller, changed into radial gas flows through the impeller, and then into the diffuser. In the diffuser, gas changed direction of flow and caused slowdown, the deceleration function converts kinetic energy into pressure. The impeller will increase pressure in first. And then, the diffusion process will increase the pressure again. In multistage centrifugal fan, air burning into the next impeller, with reflux device make higher pressure.

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