Patent ID: 11918934
Assignee: RTX CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  F  Y | IPC B  F

Claim 0:
1. A gas turbine engine comprising:
a fan section;
a compressor section;
a turbine section;
an oil source;
one or more bearings;
an oil filtration system that filters oil from the oil source prior to it being supplied to the one or more bearings, the oil filtration system including:
an oil chamber inlet defined on a first face of a housing;
a first screen disposed within the housing and defining a first chamber volume that receives an oil flow from the oil chamber inlet in a first axial direction;
a second screen disposed within the housing and surrounding the first screen to define a second chamber volume surrounding the first chamber volume; and
a bypass valve disposed within the housing and moveable between a closed position and an open position, the bypass valve disposed in the closed position up to a first threshold pressure of the first chamber volume, the bypass valve disposed in the open position when the first chamber volume has a pressure above the first threshold pressure to route the oil flow through a bypass opening fluidly coupling the first chamber volume and the second chamber volume and to route the oil flow through at least one exit nozzle located on a second face of the housing, the second face being angularly oriented with respect to the first face such that the at least one exit nozzle is aligned with a filtered oil flow that flows radially from the first axial direction through the first screen and the second screen, wherein the oil flow must pass through the second screen prior to it flowing to the at least one exit nozzle such that there is no bypass path around the second screen.