# US 12,215,602 B2 · Component for a turbine engine with a cooling hole

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- Number: US 12,215,602 B2
- Document ID: US12215602B2
- Status: Granted
- Kind: B2
- Application number: 18/599,486
- Filed: 2024-03-08
- Published: 2024-07-25
- Granted: 2025-02-04
- Earliest claimed: 2017-09-07
- Assignees: General Electric Company
- Applicants: General Electric Company
- Inventors: Zachary Daniel Webster; Aaron Ezekiel Smith; Gregory Terrence Garay; Kirk D. Gallier
- Web page: https://patentgrep.com/patent/US12215602B2

## CPC

- F01D 5/186: {Film cooling (F01D5/187 takes precedence)}
- F01D 5/187: {Convection cooling}
- F01D 9/02: Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D9/047)}
- F01D 9/065: {Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids (see also F01D25/16, F01D25/24 and F01D25/26)}
- F05D 2230/10: by removing material
- F05D 2260/202: by film cooling
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A component for a turbine engine comprises a wall having a first wall surface and a second wall surface; and a cooling hole comprising a connecting passage extending between an inlet at the first wall surface and an outlet located at the second wall surface. The connecting passage includes: a metering section extending from the inlet toward the outlet and defining a centerline, and a diffusing section at the outlet defining first and second side walls, a first junction between the first side wall and the metering section and a second junction between the second side wall the metering section, the first side wall extending between the first junction and the outlet, and the second side wall extending between the second junction and the outlet. A metering section distance is measured between the centerline and a metering section wall of the metering section.

## Claims

### Claim 1

A component for a turbine engine, comprising:
a wall having a first wall surface and a second wall surface; and
a cooling hole comprising a connecting passage extending between an inlet at the first wall surface and an outlet located at the second wall surface, wherein the connecting passage includes:
a metering section extending from the inlet toward the outlet and defining a centerline, and
a diffusing section at the outlet defining first and second side walls, a first junction between the first side wall and the metering section and a second junction between the second side wall the metering section, the first side wall extending between the first junction and the outlet, and the second side wall extending between the second junction and the outlet;
wherein a metering section distance is measured between the centerline and a metering section wall of the metering section;
wherein the metering section distance is measured in a first direction perpendicular to the centerline;
wherein a first distance is measured downstream of the first junction between the centerline and the first side wall, wherein the first distance is measured in a second direction perpendicular to the centerline, wherein the first distance is greater than the metering section distance and increases moving in a third direction from the first junction to the outlet;
wherein a second distance is measured downstream of the second junction between the centerline and a second side wall, wherein the second distance is measured in a fourth direction perpendicular to the centerline, where the second distance is greater than the metering section distance and increases moving in a downstream direction from the second junction to the outlet; and
wherein the first junction is offset from the second junction in the downstream direction along the centerline.

### Claim 2 (depends on 1)

The component of claim 1, wherein the first side wall and the second side wall continuously diverge from the centerline as they extend toward the outlet.

### Claim 3 (depends on 1)

The component of claim 1, wherein the connecting passage includes an upper surface located on an upstream side of the connecting passage with respect to a flow of hot gas along the second wall surface and a lower surface on a downstream side of the connecting passage with respect to the flow of hot gas; and
wherein the diffusing section includes portions of the upper surface and the lower surface.

### Claim 4 (depends on 3)

The component of claim 3, wherein at least a portion of the upper surface diverges from the centerline as the portion extends toward the outlet.

### Claim 5 (depends on 1)

The component of claim 1, wherein the first junction includes an edge of the connecting passage lying substantially within a first plane perpendicular to the centerline; and
wherein the second junction includes a second edge of the connecting passage lying substantially within a second plane perpendicular to the centerline.

### Claim 6 (depends on 1)

The component of claim 1, wherein a first side wall angle is defined between the first side wall and the centerline; and
a second side wall angle is defined between the second side wall and the centerline.

### Claim 7 (depends on 6)

The component of claim 6, wherein the first side wall angle is equal to the second side wall angle.

### Claim 8 (depends on 6)

The component of claim 6, wherein the first side wall angle is different than the second side wall angle.

### Claim 9 (depends on 1)

The component of claim 1, wherein at least a point of the first junction is in a first plane perpendicular to the centerline;
wherein at least a point of the second junction is in a second plane perpendicular to the centerline; and
wherein there is a depth distance between the first plane and the second plane, wherein the depth distance is measured parallel to the centerline.

### Claim 10 (depends on 1)

The component of claim 1, wherein the centerline extends through a center of the inlet to a center of the connecting passage at the first junction.

### Claim 11 (depends on 1)

The component of claim 1, wherein a metering section depth of the metering section measured along the centerline is less than at least one of a first depth of the first side wall measured along the centerline or a second depth of the second side wall measured along the centerline.

### Claim 12 (depends on 1)

The component of claim 1, wherein a cross-sectional area of the diffusing section increases moving in the downstream direction.

### Claim 13 (depends on 1)

The component of claim 1, wherein the diffusing section defines an asymmetrical shape.

### Claim 14 (depends on 1)

The component of claim 1, wherein the inlet defines a first inlet dimension and a second inlet dimension, and the outlet defines a first outlet dimension greater than the first inlet dimension and a second outlet dimension less than the second inlet dimension;
wherein the first inlet dimension and the second inlet dimension are measured along a first plane, intersecting an upstream edge of the inlet at the first wall surface, and perpendicular to the centerline;
wherein the first outlet dimension and the second outlet dimension are measured along a second plane parallel to the first plane, intersecting a downstream edge of the outlet at the second wall surface, and perpendicular to the centerline;
wherein the outlet defines a first bound area and the inlet defines a second bound area; and
wherein first bound area is larger than the second bound area.

### Claim 15 (depends on 14)

The component of claim 14, wherein the first bound area is a rounded rectangle.

### Claim 16 (depends on 15)

The component of claim 15, wherein the second bound area is circular.

### Claim 17 (depends on 1)

The component of claim 1, wherein the component is an airfoil.

### Claim 18 (depends on 17)

The component of claim 17, wherein the wall is disposed at a suction side of the airfoil.

### Claim 19 (depends on 18)

The component of claim 18, wherein the wall is curved.

### Claim 20 (depends on 1)

A turbine engine comprising the component of claim 1.