Oil mist eliminator

An oil mist eliminator for removing oil mist form a contaminated air and discharge a clean air, said eliminator comprising:

• a casing having an inlet for drawing the contaminated air and an outlet for discharging the clean air,
• an impeller being accommodated within said casing, said impeller having a rotation axis around which it is driven to rotate to draw in the contaminated air from said inlet and venting the clean air removed of the oil mist out through said outlet;
• said impeller comprising:
• a rear disc provided at its center with a hub for receiving a rotating shaft in registration with said rotation axis,
• a front disc spaced forwardly of said rear disc in a coaxial relation thereto, said front disc having a center front opening in registration with said inlet,
• a plurality of blades spaced circumferentially around said impeller and being secured between said rear disc and said front disc,
• each of said blades being of a generally L-shaped configuration having an inner fin extending generally in a radial direction of said impeller and an outer fin which is bent from said inner fin in a rotating direction of said impeller,
• said outer fin projecting radially outwardly of said rear and front discs to deflect an radial air flow proceeding between the adjacent inner fins so as to deposit the oil mist carried on the contaminated air on said outer fin by collision with the outer fin, while permitting the clean air removed of the oil mist to flow in a deflected direction,
• said outer fin being twisted with respect to a tangential direction on the circumference of said impeller forwardly of said rotation axis so that the outer fin has its inside surface facing forwardly of said rotation axis, thereby directing said clean air axially forwardly to discharge the same out through said outlet.