Airfoil assembly with platform film holes

Patent metadata

Field	Value
Publication number	US-12497896-B2
Application number	US-202318326684-A
Country	US
Kind code	B2
Filing date	May 31, 2023
Priority date	May 31, 2023
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

An airfoil assembly for a turbine engine which generates a hot fluid flow and provides a cooling fluid flow. The airfoil assembly includes a platform with radially spaced upper and lower walls, the platform extending between a platform leading edge and a platform trailing edge to define an axial direction and extending between a pair of slash faces, an airfoil having an airfoil wall extending radially between a root and a tip to define a span length, the platform wall extending from the airfoil wall proximate the root. A fillet extends between the heated surface and the airfoil wall and defines at least a portion of the root. The airfoil assembly further includes a set of film holes.

First claim

What is claimed is:

1 . An airfoil assembly for a turbine engine, the airfoil assembly comprising:
a platform including an upper wall and a lower wall radially spaced from each other to define at least a portion of a set of platform chambers, at least the upper wall defining an exterior surface, the platform axially extending between a platform leading edge and a platform trailing edge and circumferentially extending between a pair of slash faces, an airfoil having an airfoil wall and extending radially between a root and a tip to define a span length, the platform extending from the airfoil wall proximate the root; a fillet extending between the exterior surface and the airfoil wall and defining at least a portion of the root; and a set of film holes comprising at least one film hole having a passage extending between an inlet and an outlet, the passage defining a centerline, the inlet fluidly coupled to at least one platform chamber in the set of platform chambers and the outlet fluidly coupled to a heated surface of the platform, the centerline angled toward the airfoil; wherein at least one of the pair of slash faces further comprises at least one opening; and wherein the centerline passes through the at least one opening.

2 . The airfoil assembly of claim 1 , wherein at least one platform chamber in the set of platform chambers is sealed at the at least one opening by a cover plate.

3 . The airfoil assembly of claim 1 , wherein the set of film holes comprises multiple film holes.

4 . The airfoil assembly of claim 1 , wherein the outlet intersects with at least a portion of the fillet.

5 . The airfoil assembly of claim 1 , wherein the outlet is located within the exterior surface at a proximate location where the fillet meets the exterior surface of the platform.

6 . The airfoil assembly of claim 1 , wherein the set of film holes further comprises a third film hole angled away from the fillet.

7 . The airfoil assembly of claim 6 , wherein the centerline of the third film hole is angled toward at least one of the pair of slash faces with respect to the upper wall.

8 . The airfoil assembly of claim 1 , wherein the at least one film hole is located proximate at least one of the pair of slash faces.

9 . The airfoil assembly of claim 1 , wherein the set of film holes further comprise a fifth film hole located in at least one of the pair of slash faces.

10 . The airfoil assembly of claim 1 , wherein the lower wall further comprises at least one opening.

11 . The airfoil assembly of claim 1 , wherein an outlet of the second film hole is located at a lowered region of the plurality of lowered regions.

12 . The airfoil assembly of claim 1 , wherein the platform includes surface contouring comprising a plurality of raised regions and a plurality of lowered regions, wherein the at least one film hole comprises a first film hole, and
wherein the set of film holes further comprises a second film hole provided at the surface contouring.

Assignees

• Gen Electric

Inventors

• Gallier Kirk Douglas
• Webster Zachary Daniel
• Corsetti Brian Kenneth

Classifications

• F05D2230/21

  by casting · CPC title

• F05D2230/10

  by removing material · CPC title

• F01D5/187

  Convection cooling · CPC title

• F05D2240/81

  Cooled platforms · CPC title

• F01D5/147

  Construction, i.e. structural features, e.g. of weight-saving hollow blades (F01D5/148, F01D5/16 and F01D5/20 take precedence; blade shape F01D5/141; blades with cooling or heating channels or cavities F01D5/18; heating, heat-insulating or cooling means on blades F01D5/18) · CPC title