Working of Rotary Vane Air Compressor Explain with Animation.

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Working of Rotary Vane Air Compressor Explain with Animation

Rotary vane compressors have been around for a long time and are used for many things other than just compressed air.  The first known description of a sliding vane pump was in a book by an Italian engineer, Agostino Ramelli, written in 1588.  The rotary vane pump was patented in 1876 by Charles C. Barnes, a Canadian engineer, and he is generally credited with inventing the modern design.

You have a cylindrical rotor inside of a housing, and this rotor has slots where the vanes are. The vanes can slide in and out.

The rotor is set eccentrically (off-center) in the housing so that on one side it almost touches.  As the rotor spins, the vanes are thrown out by centrifugal force, until they touch the housing.  If the pump is oil-lubricated, there will be a thin film of oil in between the vane and housing.

As air enters through the inlet, it’s trapped between the vanes.  As the rotor turns, the volume of the trapped air is gradually reduced.

Again, the reduction in volume raises the pressure.

The vanes are often small pieces of carbon fiber or graphite composite, but they may be made of different materials, depending on the application.

They are mostly rectangular.  They sometimes have an angle cut on one of the long edges.

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