Patent ID: 8826637
Filing Date: 2014-09-09
Classification: F01D,F01M,F02C,F05D,Y02T

Abstract:
1. An arrangement for discharging oil-venting air separated by a lubricating oil de-aeration system of a gas-turbine engine, comprising: a diffuser having an oil-air inlet opening for connecting to a venting line of the lubricating oil de-aeration system, the diffuser converting kinetic energy of the oil-venting air from the venting line to a static pressure energy which exceeds a pressure of exhaust gas flow through an exhaust flow duct of the gas-turbine engine, the diffuser positioned within an exhaust cone of the gas-turbine engine, the exhaust cone positioned within the exhaust flow duct to provide an internal confinement of the exhaust flow duct, the diffuser also having an oil-air outlet opening in communication with the exhaust gas flow for discharging the oil-venting air into the exhaust gas flow; the diffuser having an internal passage connecting the oil-air inlet opening with the oil-air outlet opening for passage of the oil-venting air from the oil-air inlet opening to the oil-air outlet opening, the internal passage having a cross-sectional area increasing from the oil-air inlet opening to the oil-air outlet opening.