Centrifugal oil filter with particle collector
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorMichel G. Hugues
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Abstract
A centrifugal oil filter comprises a bowl which is rotatable about a vertical axis within a fixed casing and which is open at its upper and lower ends, the inner wall of the bowl being provided with grooves which trap particles in the polluted oil fed into the bowl as the bowl is rotated and the oil flows upwards along the wall under centrifugal action and which allow the particles to fall therefrom under gravity to a particle collector positioned below the open lower end of the bowl when the bowl stops rotating. The inner wall of the bowl is also formed with an annular recess above the particle trapping grooves. This recess fills with oil when the bowl is rotated, and this oil flows out and downwards along the wall under gravity when the bowl stops, thereby cleaning the filter wall.
Claims6
A centrifugal oil filter, comprising:
- a rotatable bowl,
- means for mounting said bowl for rotation about a substantially vertical axis,
- oil inlet means opening into the lower portion of said bowl,
- means for permitting an overflow of oil from an upper portion of said bowl when said bowl is rotating, and
- a fixed particle collector situated beneath said bowl, said bowl having an open bottom portion, an inner wall, particle trapping means located on said inner wall, and an annular recess forming an oil reservoir situated above said particle trapping means wherein said particle trapping means comprises a plurality of grooves formed on said inner wall such that particles are trapped in said grooves due to centrifugal force when said bowl is rotating and fall due to a force of gravity into said particle collector when said blow stops rotating.
Dependencies are inferred from the claim text.