CENTRIFUGAL GEAR-TYPE PUMP Russian patent published in 2015 - IPC F04D13/12 F04C11/00 

FIELD: machine building.

SUBSTANCE: invention relates to pumps used in oil systems of aircraft gas turbine engines for oil supply and return. Centrifugal gear-type pump contains gears located in the casing bores and engaged, one of them is pinion, and is connected with drive shaft, and made in gear hubs channels for liquid supply to depressions between teeth are connected with suction cavity connected to the intake branch. The intake branch is made in casing at the drive shaft side, against the idler, and is connected with suction cavity via the through channel made on the shaft and hub of the idler.

EFFECT: invention implements oil flow at section from oil cavity crankcase to pump input along the shortest trajectory and with minimum number of points of direction change, thus abruptly reduces the hydraulic resistance at the input channel of the oil pump, and increases operation reliability of oil system of aircraft gas turbine engine.

2 cl, 2 dwg