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US 11,143,049 B2Granted
Labyrinth seal comprising a lip provided with a deflector
AssigneeSafran Helicopter Engines
InventorsBertrand Guillaume Robin Pellaton, Lucas Benassis
Life of this patent
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Abstract
A labyrinth seal lip (5) comprises, standing on one of its lateral faces (7), a deflector (13) which channels the flow of gas tangent to the lip (5) towards the facing seal (4) so as to disturb the leakage flow (22) through the gap and decrease the flow rate.
Claims7
A labyrinth seal of a turbomachine, the seal comprising:
- a lip (5) projecting above a base (6) of a rotor (1) of the turbomachine, the lip (5) being circular and extending along a tangential direction (T),
- wherein the lip (5) comprises two lateral faces (7, 8), each lateral face (7, 8) being connected to the base (6) and, at an end opposite the base (6), a face at a tip (9) of the lip (5) at which, and
- wherein at least one of the lateral faces (7, 8) supports at least one deflector (13) comprising a deflecting face (14) intersecting with said lateral face (7, 8) and with an inclination relative to the tangential direction (T), wherein the inclination of the deflecting face (14) relative to the tangential direction (T) increases with decreasing distance from the face at the tip (9), the deflecting face (14) thus being concave.
Dependencies are inferred from the claim text.