A lube system is provided and includes an air-oil tank including a deaerator configured to remove a first quantity of oil from a first air-oil supply to generate a second air-oil supply having a second quantity of oil, which is smaller than the first quantity of oil, the air oil tank being configure
A lube system is provided and includes an air-oil tank including a deaerator configured to remove a first quantity of oil from a first air-oil supply to generate a second air-oil supply having a second quantity of oil, which is smaller than the first quantity of oil, the air oil tank being configured to output the second air-oil supply to an air vent line, a de-oiler disposed along the air vent line and configured to remove from the second air-oil supply oil mist including oil droplets of a minimum size and a pressure regulating valve (PRV) disposed along the air vent line between the air-oil tank and the de-oiler to regulate fluid pressures within the air-oil tank, the PRV being configured to encourage formation of the oil droplets of at least the minimum size.
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1. A lube system, comprising: an air-oil tank including a deaerator configured to remove a first quantity of oil from a first air-oil supply to generate a second air-oil supply having a second quantity of oil, which is smaller than the first quantity of oil, the air oil tank being configured to outp
1. A lube system, comprising: an air-oil tank including a deaerator configured to remove a first quantity of oil from a first air-oil supply to generate a second air-oil supply having a second quantity of oil, which is smaller than the first quantity of oil, the air oil tank being configured to output the second air-oil supply to an air vent line;a de-oiler disposed along the air vent line and configured to remove from the second air-oil supply oil mist including oil droplets of a minimum size; anda pressure regulating valve (PRV) disposed along the air vent line between the air-oil tank and the de-oiler to regulate fluid pressures within the air-oil tank,the PRV being configured to encourage formation of the oil droplets of at least the minimum size by flowing the second air-oil supply through a valve seat area defined by a movable poppet and a valve seat,the valve seat defining serially discrete, axially arranged recesses all of which have randomly variable cross-sectional shapes and randomly variable sizes and each recess having radial surfaces and an axial surface extending between angular corners respectively formed by the axial surface with the radial surfaces. 2. The lube system according to claim 1, further comprising a scavenge pump unit configured to pump the first air-oil supply to the air-oil tank. 3. The lube system according to claim 1, further comprising a lube pump section configured to pump at least a portion of the quantity of oil removed from the first air-oil supply from the air-oil tank. 4. The lube system according to claim 1, wherein the valve seat area comprises: an inlet, at which the second air-oil supply flows at a first velocity; andan outlet downstream from the inlet, at which the second air-oil supply flows at a second velocity, which is throttled back from the first velocity. 5. The lube system according to claim 1, wherein the PRV comprises an elastic element configured to bias the poppet toward a closed position. 6. The lube system according to claim 5, wherein at least one of the valve seat and the poppet is configured to form a series of axially arranged recesses. 7. The lube system according to claim 5, wherein a forward portion of the poppet abuts the valve seat when the poppet occupies the closed position and has an axial length that extends beyond a rear portion of the valve seat. 8. A lube system, comprising: an air-oil tank configured to output a processed air-oil supply to an air vent line;a de-oiler disposed along the air vent line and configured to remove from the processed air-oil supply oil droplets of a minimum size; anda pressure regulating valve (PRV) disposed along the air vent line between the air-oil tank and the de-oiler to regulate fluid pressures within the air-oil tank,the PRV being configured to encourage formation of the oil droplets of at least the minimum size by flowing the processed air-oil supply through a valve seat area including serially discrete, axially arranged recesses all of which have randomly variable cross-sectional shapes and randomly variable sizes, each recess having radial surfaces and an axial surface extending between angular corners respectively formed by the axial surface with the radial surfaces. 9. The lube system according to claim 8, further comprising: a scavenge pump unit configured to pump an initial air-oil supply to the air-oil tank; anda lube pump section configured to pump from the air-oil tank at least a portion of a quantity of oil, which is removed from the initial air-oil supply in the air-oil tank. 10. A method of operating a lube system, the method comprising: removing within an air-oil tank a first quantity of oil from a first air-oil supply to generate a second air-oil supply having a second quantity of oil, which is smaller than the first quantity of oil;removing from the second air-oil supply oil mist including oil droplets of a minimum size; and,prior to the removing of the oil mist, encouraging formation of the oil droplets of at least the minimum size while regulating fluid pressures within the air-oil tank by flowing the second air-oil supply through a valve seat area including serially discrete, axially arranged recesses all of which have randomly variable cross-sectional shapes and randomly variable sizes, each recess having radial surfaces and an axial surface extending between angular corners respectively formed by the axial surface with the radial surfaces. 11. The method according to claim 10, further comprising: pumping the first air-oil supply to an air-oil tank in which the removing occurs; andpumping at least a portion of the first quantity of oil removed from the first air-oil supply from the air-oil tank.
Giersdorf Rodney L. (Port St. Lucie FL) Peduzzi Alfred (Juno Isles FL) Krul Allan D. (Jupiter FL) Jones Stephen R. (Jupiter FL) Chetta Gregory E. (Palm Beach Gardens FL), Deoiler for jet engine.
Allmon Barry L. (Maineville OH) Tongeman Kevin B. (Cincinnati OH), Low pressure drop radial inflow air-oil separating arrangement and separator employed therein.
Bunn Stuart E. (6412 Carter Ave. Shawnee Mission KS 66203) Owsley Herbert B. (6412 Carter Ave. Shawnee Mission KS 66203), Valve assembly with relief groove.
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