US 11,795,841 B2
Sump auxiliary vent system
Joseph Black, Brownsburg, IN (US); Joseph A. Swift, Indianapolis, IN (US); Daniel Feinstein, Zionsville, IN (US); and Jared Isamu Taketa, Avon, IN (US)
Assigned to ROLLS-ROYCE CORPORATION, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Apr. 18, 2022, as Appl. No. 17/723,161.
Application 17/723,161 is a continuation of application No. 16/151,995, filed on Oct. 4, 2018, granted, now 11,306,614.
Prior Publication US 2022/0403756 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F01D 25/18 (2006.01); F01D 25/12 (2006.01); F01D 25/16 (2006.01); F02K 3/06 (2006.01)
CPC F01D 25/183 (2013.01) [F01D 25/125 (2013.01); F01D 25/162 (2013.01); F02K 3/06 (2013.01); F05D 2220/323 (2013.01); F05D 2240/54 (2013.01); F05D 2240/55 (2013.01); F05D 2260/213 (2013.01); F05D 2260/605 (2013.01); F05D 2260/98 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an air chamber comprising an inlet to receive pressurized air from a gas turbine engine;
an oil capture cavity positioned between the air chamber and an oil sump supplying lubricating oil to the gas turbine engine;
the oil capture cavity including an auxiliary vent formed in a base of the oil capture cavity;
a seal separating the oil capture cavity from fluid communication with the oil sump; and
a nozzle providing fluid communication between the oil capture cavity and the air chamber, the nozzle configured and positioned to regulate and direct a stream of the pressurized air into the oil capture cavity and against an opposite wall of the oil capture cavity, the opposite wall positioned and formed such that a flow of the stream of the pressurized air is directed to flow parallel to the opposite wall and circulate in the oil capture cavity back to the nozzle to form a cyclonic air flow in a non-rotational portion of the oil capture cavity and create a quiescent zone at the auxiliary vent.