FIELD: motors and pumps.
SUBSTANCE: invention relates to the field of aircraft engine building, in particular to the elements of the oil system of an aviation gas turbine engine. Box of drive units contains a cogwheel, a branch pipe, bearings, a centrifugal impeller with blades. Centrifugal impeller with blades includes a shell with the possibility of forming internal cavities, a window for gas-oil mixture inlet and air outlet, oil relief, blades are of different lengths and are located at angles α and β to the axis of rotation of the gear wheel. In addition, the centrifugal impeller may comprise curved blades. In addition, the centrifugal impeller may comprise at least two successive oil and air separation stages.
EFFECT: implementation of the proposed invention makes it possible to improve the assembly technology, reduce the overall dimensions and weight of the drive unit box, and improve the efficiency of oil separation.
3 cl, 5 dwg
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