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US 2021/0079802 A1Published application
Labyrinth seal with angled fins
AssigneePratt & Whitney Canada Corp.
InventorsAlexander SMITH, Pierre-Yves LEGARE
Life of this patent
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AssigneePratt & Whitney Canada Corp.
InventorsAlexander SMITH, Pierre-Yves LEGARE
Estimating the term…
An aircraft engine having a shaft, an engine casing, at least one bearing located between the shaft and the engine casing, the engine casing defining a bearing cavity containing the at least one bearing, an air distribution system configured to inject compressed air to the bearing cavity to in use provide a sealing air flow entering the bearing cavity, and a labyrinth seal having a seal rotor and a seal stator, fins extending from one of the seal rotor and the seal stator toward the other of the seal rotor and the seal stator, at least one of the fins extending in an angled upstream direction relative to a direction of the sealing air flow.
An aircraft engine comprising a shaft, an engine casing, at least one bearing located between the shaft and the engine casing, the engine casing defining a bearing cavity containing the at least one bearing, an air distribution system configured to inject compressed air to the bearing cavity to in use provide a sealing air flow entering the bearing cavity, and a labyrinth seal having a seal rotor and a seal stator, fins extending from one of the seal rotor and the seal stator toward the other of the seal rotor and the seal stator, at least one of the fins extending in an angled upstream direction relative to a direction of the sealing air flow.
A labyrinth seal assembly for sealing a bearing cavity, comprising:
A labyrinth seal assembly for sealing a bearing cavity, comprising:
Dependencies are inferred from the claim text.