GEARBOX DEOILER WITH SYCHNRONIZER

• US 20130042760A1
• Filed: 08/17/2011
• Published: 02/21/2013
• Est. Priority Date: 08/17/2011
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Original Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Inventors: Short, Keith E., Blewett, Michael R.
• Granted Patent: US 8,657,931 B2
• Time in Patent Office: Days
• US Class Current: 95/270
• CPC Class Codes: F01M 13/04 having means for purifying air before leaving crankcase, e.g. removing oil
• CPC Class Codes: F01M 2013/0422 Separating oil and gas with a centrifuge device
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A gearbox that includes an inlet configured to receive a mixture of air and oil from an external source and a deoiler. The deoiler includes a shaft including an outlet passage formed on an inner portion of the shaft, a separator unit coupled to and surrounding a portion of the shaft and including an inlet port, and a synchronizer including one or more blades and that is coupled to the shaft proximate the inlet port.

Claims

1. A gearbox comprising:

an inlet configured to receive a mixture of air and oil from an external source; and

a deoiler, the deoiler comprising;

a shaft including an outlet passage formed on an inner portion of the shaft;

a separator unit coupled to and surrounding a portion of the shaft and including an inlet port; and

a synchronizer including one or more blades and that is coupled to the shaft proximate the inlet port.

2. The gearbox of claim 1, wherein the shaft includes one or more inner passages that fluidly connect an external portion of the shaft to the inner portion.

3. The gearbox of claim 2, wherein the separator unit surrounds the one or more inner passages and serves to remove oil from air that enters it before and to direct the air to the one more inner passages.

4. The gearbox of claim 1, wherein the separator includes an inner ring and an outer ring and the blades connect the inner and outer rings.

5. The gearbox of claim 4, wherein the blades are canted.

6. The gearbox of claim 1, wherein the external source is a bearing compartment of a turbine engine.

7. The gearbox of claim 1, further comprising:

a drive shaft coupled to a shaft of the turbine engine and to the shaft of the gearbox, the drive shaft transferring rotational power from the shaft of the turbine engine to the shaft of the gearbox thereby causing the separator unit and the synchronizer to rotate.

8. A method for removing oil from a mixture of air and oil, the method comprising:

passing the mixture through a rotating separator unit coupled to a shaft to remove the oil from the air to create exhaust air; and

before passing, accelerating the mixture in a rotational direction with a synchronizer coupled to the shaft and located proximate an inlet to the rotating separator unit.

9. The method of claim 8, further comprising:

passing the exhaust air to an interior portion of the shaft where it is exhausted to the atmosphere.

10. The method of claim 8, further comprising:

receiving the mixture from a bearing compartment of a turbine engine.