EP 3953617 A1 20220216 - LABYRINTH SEAL COMPRISING AN ABRADABLE ELEMENT WITH VARIABLE CELL DENSITY
Title (en)
LABYRINTH SEAL COMPRISING AN ABRADABLE ELEMENT WITH VARIABLE CELL DENSITY
Title (de)
LABYRINTHDICHTUNG MIT EINEM ABREIBBAREN ELEMENT MIT VARIABLER ZELLDICHTE
Title (fr)
JOINT D'ETANCHEITE A LABYRINTHE COMPORTANT UN ELEMENT ABRADABLE A DENSITE VARIABLE DE CELLULES
Publication
Application
Priority
- FR 1903956 A 20190412
- EP 2020060312 W 20200410
Abstract (en)
[origin: WO2020208224A1] The present invention relates to a labyrinth seal for a turbine engine, in particular of an aircraft, comprising a rotor element and a stator element extending around the rotor element, the rotor element being suitable for rotating relative to the stator element about an axis of rotation having an axial direction (DA), the rotor element comprising an annular lip having an outer radial end extending towards an abradable element (57) carried by the stator element, the outer radial end of the annular lip having a corrugation in the axial direction (DA) and a non-zero axial expanse (E5) associated with the corrugation, the abradable element (57) comprising a plurality of cells (50a, 50b) arranged adjacent to one another along the axial direction (DA) and an ortho-radial direction (O), the cells (50a, 50b) comprising walls which extend in an essentially radial direction, the cells being distributed with a first cell density in a first densified annular zone (Z51) of the abradable element, said densified annular zone (Z51) being located opposite the radial end of the lip, said densified annular zone having an axial expanse less than or equal to the axial expanse of the outer radial end of the lip, the cells being distributed according to a reference density of cells outside said first zone, the first density being greater than the reference density.
IPC 8 full level
F16J 15/447 (2006.01); F01D 11/12 (2006.01); F16J 15/44 (2006.01)
CPC (source: EP US)
F01D 11/02 (2013.01 - US); F01D 11/122 (2013.01 - US); F01D 11/127 (2013.01 - EP US); F16J 15/44 (2013.01 - EP); F16J 15/444 (2013.01 - EP); F16J 15/4472 (2013.01 - EP US); F01D 11/02 (2013.01 - EP); F05D 2230/50 (2013.01 - US); F05D 2240/55 (2013.01 - US); F05D 2250/11 (2013.01 - EP US); F05D 2250/121 (2013.01 - EP US); F05D 2250/132 (2013.01 - EP); F05D 2250/141 (2013.01 - EP); F05D 2250/184 (2013.01 - EP); F05D 2250/283 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020208224 A1 20201015; CN 113811706 A 20211217; CN 113811706 B 20240705; EP 3953617 A1 20220216; FR 3095025 A1 20201016; FR 3095025 B1 20210305; US 2022186627 A1 20220616
DOCDB simple family (application)
EP 2020060312 W 20200410; CN 202080035474 A 20200410; EP 20717668 A 20200410; FR 1903956 A 20190412; US 202017603109 A 20200410