US 12,188,361 B2
Blade comprising a shield having a defrosting air passage duct
Guillaume Pascal Jean-Charles Gondre, Moissy-Cramayel (FR); Morgane Astrid Leger, Moissy-Cramayel (FR); Stéphane Roger Mahias, Moissy-Cramayel (FR); and Romuald Bernard Mauvais, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/037,872
Filed by Safran Aircraft Engines, Paris (FR)
PCT Filed Nov. 10, 2021, PCT No. PCT/FR2021/051995
§ 371(c)(1), (2) Date May 19, 2023,
PCT Pub. No. WO2022/106772, PCT Pub. Date May 27, 2022.
Claims priority of application No. FR2011930 (FR), filed on Nov. 20, 2020.
Prior Publication US 2024/0003265 A1, Jan. 4, 2024
Int. Cl. F01D 25/02 (2006.01); F01D 5/14 (2006.01)
CPC F01D 25/02 (2013.01) [F01D 5/147 (2013.01); F05D 2220/36 (2013.01); F05D 2240/301 (2013.01); F05D 2240/303 (2013.01); F05D 2240/306 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A blade comprising a body, the body including, in a direction of flow of an air stream, an upstream end and a downstream end, a radially outer tip, a radially inner root, the blade comprising between the radially outer tip and the radially inner root a vane intended to work aerodynamically in the air stream, a support connected to the radially inner root, the radially inner root being intended to be fixed in a cell of a rotor disk of a bladed wheel of a turbomachine fan,
the blade including a shield attached to the upstream end of the body, the shield including an upstream end forming a leading edge of the blade, the shield further including a nose upstream of which the leading edge is located, a pressure-face fin and a suction-face fin laterally attached onto the vane, the pressure-face fin and suction-face fin extending from the nose, the blade comprising a de-icing air passage duct disposed inside the nose and extending radially inside the nose, the de-icing air passage duct having an inner end forming an air inlet for the de-icing air passage duct, the air inlet opening out opposite the support and a radially outer end forming an air outlet, the air outlet opening out from the nose between the leading edge and a junction of the leading edge with the pressure-face fin, the de-icing air passage duct having a first rectilinear portion and a second bent portion extending from the end of the first rectilinear portion.