US 11,982,204 B2
Turbomachine part or assembly of parts
William Henri Joseph Riera, Moissy-Cramayel (FR); and Gabriel Jacques Victor Mondin, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/794,077
Filed by SAFRAN, Paris (FR)
PCT Filed Jan. 19, 2021, PCT No. PCT/FR2021/050093
§ 371(c)(1), (2) Date Jul. 20, 2022,
PCT Pub. No. WO2021/148751, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2000668 (FR), filed on Jan. 23, 2020.
Prior Publication US 2023/0138043 A1, May 4, 2023
Int. Cl. F01D 5/14 (2006.01)
CPC F01D 5/141 (2013.01) [F05D 2220/30 (2013.01); F05D 2240/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A turbomachine part or assembly of parts comprising:
a first blade and a second blade; and
a platform from which the first blade and the second blade extend;
wherein the platform has, between a pressure side of the first blade and a suction side of the second blade, a non-axisymmetric surface defining at least one fin, and
wherein a transverse section of the fin is asymmetric, said transverse section comprises first and second oblique faces joining at a dorsal edge, the first oblique face is oriented toward the pressure side of the first blade, the second oblique face is oriented toward the suction side of the second blade, the first oblique face has a steeper slope than the second oblique face, a longitudinal section of the fin comprising:
a first portion wherein a distance between the dorsal edge and the surface is increasing and
a second portion wherein said distance is decreasing,
a tangent to the longitudinal section of the fin at a mid-height point of the first portion and the surface intersect while forming a fourth angle comprised between 90° and 160°; and
a tangent to the longitudinal section of the fin at a mid-height point of the second portion and the surface intersect while forming a fifth angle comprised between 90° and 160°.