Separation characteristics of particles in a self-rotating type centrifugal oil purifier
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초록
The centrifugal oil purifier is used in an engine for lubrication and to remove impurities. The momentumneeded for the rotation of the cylindrical chamber is obtained by jet injections. An impure particle inthe oil is separated by the centrifugal forces moving to the inner wall of the rotating cylindrical chamberbody. The dust particles are eliminated when the particles are absorbed onto the surface of the inner wall ofthe chamber body. The flow characteristics and the physical behaviors of particles in this centrifugal oil purifierwere investigated numerically and the filtration efficiencies was evaluated. For calculations, a commercialcode is used and the SST (Shear Stress Transport) turbulence model has been adopted. The MFR (MultiFrames of Reference) method is introduced to consider the rotating effect of the flows. Under various variables,such as particle size, particle density and rotating speed, the filtration efficiencies are evaluated. It hasbeen verified that the filtration efficiency is increased with the increments in the particle size, the particledensity and the rotating speed of the cylindrical chamber.
Abstract
The centrifugal oil purifier is used in an engine for lubrication and to remove impurities. The momentumneeded for the rotation of the cylindrical chamber is obtained by jet injections. An impure particle inthe oil is separated by the centrifugal forces moving to the inner wall of the rotating cylindrical chamberbody. The dust particles are eliminated when the particles are absorbed onto the surface of the inner wall ofthe chamber body. The flow characteristics and the physical behaviors of particles in this centrifugal oil purifierwere investigated numerically and the filtration efficiencies was evaluated. For calculations, a commercialcode is used and the SST (Shear Stress Transport) turbulence model has been adopted. The MFR (MultiFrames of Reference) method is introduced to consider the rotating effect of the flows. Under various variables,such as particle size, particle density and rotating speed, the filtration efficiencies are evaluated. It hasbeen verified that the filtration efficiency is increased with the increments in the particle size, the particledensity and the rotating speed of the cylindrical chamber.
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