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The principle and characteristic of more wing type centrifugal cooling fan

by:TOCH     2021-01-27
More commonly used vane have CY series centrifugal cooling fan, DE series, FLJ series, all kinds of different size parameters of the series, but the working principle and function is the same.
how the role of the wing type centrifugal cooling fan
much wind vane centrifuge depend on the input mechanical energy, improve the pressure side by side to send gas machinery, it is a kind of driven fluid machinery.
much wind vane centrifuge is widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and the structure of the ventilation, dust and cooling; Boiler and auto furnaces of ventilation and air; Air conditioning equipment and household appliances in cooling and ventilation; Grain drying and submitted; Wind tunnel and become a hovercraft inflatable and propulsion, etc.
much wind vane centrifugal principle and turbine compressor basic same, but due to the low gas flow rate, pressure changes small, generally does not need to consider the change of the gas volume, namely the gas as incompressible fluid handling.
much wind vane centrifuge can be made into right-handed and left-handed two types. Clockwise from motor side face, impeller, turn the cooling fan, called right counterclockwise, called left-handed.

much wind vane centrifuge working principle of centrifugal cooling fan is according to the kinetic energy is converted to potential energy principle, the use of high-speed rotation of the impeller speed, the gas and then slow down, change flow direction, the kinetic energy is converted into potential energy ( Pressure) 。 In single stage centrifugal cooling fan, the gas from the axial impeller, change into light when the gas flows through the impeller to, and then into the diffuser. In the diffuser, gas caused slowdown, changed the direction of flow can this deceleration function converts kinetic energy into pressure. Increased pressure occurs mainly in the impeller, the second happened in the diffusion process. In the multistage centrifugal cooling fan, air burning into the next round, with reflux device has higher pressure.
more wing type centrifugal cooling fan performance characteristics characteristics:
more wing type centrifugal cooling fan is actually a kind of variable flow constant pressure device. When the rotating speed is constant, centrifugal cooling fan pressure Flow theory curve should be a straight line. Due to internal losses, the actual characteristic curve is curved. The pressure produced in centrifugal cooling fan is affected by the large inlet temperature or density change. For a given air inflow, the highest inlet temperature ( Air density minimum) When the minimum pressure. For a given pressure and the flow characteristic curve, there is a power and flow characteristic curve. When the cooling fan drum run at constant speed, for a given flow rate, the required power of inlet temperature, the higher.
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