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US 8,770,918 B1Granted
Non-contacting seals for geared gas turbine engine bearing compartments
AssigneeUnited Technologies Corporation
InventorsM. Rifat Ullah, Robert E. Peters
Life of this patent
Estimating the term…
Abstract
A rotating element is associated with at least one bearing compartment that includes a bearing to support the rotating element. A seal resists leakage of lubricant outwardly of the bearing compartment and allows air to flow from a chamber across the seal and into the bearing compartment. The seal has a seal face facing a rotating face rotating with the rotating element. The seal is a non-contact seal. A gas turbine engine is also disclosed.
Claims22
A section for a gas turbine engine comprising:
- a rotating element and at least one bearing compartment including a bearing for supporting said rotating element, a seal for resisting leakage of lubricant outwardly of said bearing compartment and for allowing air to flow from a chamber across the seal and into the bearing compartment;
- said seal having a seal face facing a rotating face rotating with said rotating element, and said seal being a non-contact seal;
- and
- said seal is a circumferentially segmented carbon seal.
1 more element
A section for a gas turbine engine comprising:
- a rotating element and at least one bearing compartment including a bearing for supporting said rotating element, a seal for resisting leakage of lubricant outwardly of said bearing compartment and for allowing air to flow from a chamber across the seal and into the bearing compartment;
- said seal having a seal face facing a rotating face rotating with said rotating element, and said seal being a non-contact seal;
- and
- said seal is a controlled gap carbon seal having a full hoop seal and a metal band shrunk fit onto the seal, and positioned in a seal carrier.
1 more element
A gas turbine engine comprising:
- a fan, a compressor section, a combustor, and a turbine section with a fan drive turbine driving said fan through a gear reduction;
- a rotating element and at least one bearing compartment including a bearing for supporting said rotating element, a seal for resisting leakage of lubricant outwardly of said bearing compartment and for allowing pressurized air to flow from a chamber across said seal into the bearing compartment;
- said seal having a seal face facing a rotating face rotating with said rotating element, and said seal being a non-contact seal;
- and
- the rotating element being driven by the fan drive turbine, and said at least one bearing compartment being associated with said gear reduction.
2 more elements
A gas turbine engine comprising:
- a fan, a compressor section, a combustor, and a turbine section with a fan drive turbine driving said fan through a gear reduction;
- a rotating element and at least one bearing compartment including a bearing for supporting said rotating element, a seal for resisting leakage of lubricant outwardly of said bearing compartment and for allowing pressurized air to flow from a chamber across said seal into the bearing compartment;
- said seal having a seal face facing a rotating face rotating with said rotating element, and said seal being a non-contact seal;
- and
- said seal is a circumferentially segmented carbon seal.
2 more elements
A gas turbine engine comprising:
- a fan, a compressor section, a combustor, and a turbine section with a fan drive turbine driving said fan through a gear reduction;
- a rotating element and at least one bearing compartment including a bearing for supporting said rotating element, a seal for resisting leakage of lubricant outwardly of said bearing compartment and for allowing pressurized air to flow from a chamber across said seal into the bearing compartment:
- said seal having a seal face facing a rotating face rotating with said rotating element, and said seal being a non-contact seal;
- and
- said seal is a controlled gap carbon seal having a full hoop seal and a metal band shrunk fit onto the seal, and positioned in a seal carrier.
2 more elements
Dependencies are inferred from the claim text.