Turbine engine with a blade

Patent metadata

Field	Value
Publication number	US-12421855-B2
Application number	US-202418599470-A
Country	US
Kind code	B2
Filing date	Mar 8, 2024
Priority date	Jun 9, 2022
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A blade for a turbine engine with a wall separating a cooling fluid flow and a hot gas fluid flow and having a heated surface along which the hot gas fluid flow flows and a cooled surface facing the cooling fluid flow. A plurality of cooling holes each having a passage extending between an inlet at the cooled surface and an outlet at the heated surface. The outlet extending between an upstream end and a downstream end with respect to the hot gas fluid flow to define a distance, the passage defining a centerline forming a first angle (θ) with the heated surface.

First claim

The invention claimed is:

1. A component for a turbine engine which generates a hot gas fluid flow, and provides a cooling fluid flow, comprising:
a wall separating the hot gas fluid flow from the cooling fluid flow and having a heated surface along which the hot gas fluid flow flows and a cooled surface facing the cooling fluid flow; and
at least one cooling hole comprising a passage extending between an inlet at the cooled surface and an outlet at the heated surface, the passage defining a centerline forming a first angle (θ) with the heated surface, the passage having a top wall and a bottom wall each extending from the inlet toward the outlet, and a layback surface defining at least a portion of the outlet, extending from the bottom wall to the heated surface, the layback surface forming a second angle (β) with the bottom wall and a third angle (Δ) with the heated surface;
wherein for any range of angle values (α):

(

α
low

≤
α
≤

α
hi

)

:

If
⁢

⁢
αhi

+

α

low

≤
θ

,

then
⁢

α
low

≤
Δ
≤

α
hi

;

and

If
⁢

⁢
αhi

+

α

low

≥
θ

,

then
⁢

α
low

≤
β
≤

α
hi

.

wherein the sum of the low and high angle values is equal to a switch value (θ s ):

α
hi

+

α
low

=

θ
s

.

2. The component of claim 1 , wherein the range of angle values is 5°≤α≤40°.

3. The component of claim 1 , wherein a low second angle (β low ) is greater than a low third angle (Δ low ):

β
low

>

Δ
low

.

4. The component of claim 1 , wherein a high second angle (β hi ) is greater than a high third angle (Δ hi ):

β

h
⁢
i

>

Δ

h
⁢
i

.

5. The component of claim 1 , wherein as the first angle (θ) increases to the switch value (θ s ), one of the second angle (β) or the third angle (Δ) increases at a first rate while the other of the second angle (β) or the third angle (Δ) remains constant within a range.

6. The component of claim 5 , wherein as the first angle (θ) increases above the switch value (θ s ), the other of the second angle (β) and the third angle (Δ) increases at the first rate while the other of the second angle (β) and the third angle (Δ) remains constant within a range.

7. The component of claim 1 , wherein the layback surface intersects the heated surface at a downstream end of the outlet, the top wall intersects the heated surface at an upstream end of the outlet and a straight-line distance measured from the downstream end to the upstream end defines a first dimension of the outlet.

8. The component of claim 7 , wherein the at least one cooling hole includes multiple cooling holes with each cooling hole having first dimensions within 5% of each other cooling hole.

9. The component of claim 8 , wherein the layback surface intersects the bottom wall at a junction and a length (L β ) measured along the first angle (θ) from the junction to the straight-line distance increases when the second angle (β) increases.

10. The component of claim 9 , wherein the passage further defines a hydraulic diameter (D h ) and for any constant distance (d const ), first, second, and third angles satisfy the following expression:

d
const

=

D
h

sin
⁢
θ

+

L
β

·
sin

⁢
β

sin
⁢
Δ

.

Assignees

• Gen Electric

Inventors

• Rausch Jonathan Michael
• Webster Zachary Daniel
• Feldmann Kevin Robert
• Perry Andrew David
• Gallier Kirk Douglas
• Osgood Daniel Endecott

Classifications

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F05D2240/30

  Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor · CPC title

• F05D2260/202

  by film cooling · CPC title

• F01D25/12

  Cooling · CPC title