IP Library Granted Patent US 11,274,559
Granted Patent B2
US 11,274,559 · App. 16/743,435 · Granted Mar 15, 2022

Turbine blade tip dirt removal feature

Inventors: Robin Prenter (Avon, CT); Timothy J. Jennings (New Britain, CT); Carey Clum (East Hartford, CT)
Assignee: Raytheon Technologies Corporation
F01D5/18F02C7/30F05D2260/607
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,274,559
App. No.
16/743,435
Granted
Mar 15, 2022
Kind
B2
Abstract

A gaspath component for a gas turbine engine includes a platform. A body extends outward from the platform and includes at least one internal cooling passage. The internal cooling passage includes at least one particulate redirection feature defined at an end of the body opposite the platform. The at least one particulate redirection feature includes a first face oblique to and facing an expected flow of fluid through the internal cooling passage and defines at least one corresponding opening.

Claims (24)

1. A gaspath component for a gas turbine engine comprising:

a platform;

a body extending outward from the platform and including at least one internal cooling passage, the at least one internal cooling passage includes at least one particulate redirection feature defined at an end of the body opposite the platform;

the at least one particulate redirection feature having a chevron cross section including a first face oblique to and facing an expected flow of fluid through the at least one internal cooling passage and a second face oblique to and facing the expected flow of fluid through the at least one internal cooling passage, the first and second faces joining at a point and defining at least one corresponding opening;

wherein the point is the upstream most position of the particulate redirection feature relative to the expected flow of fluid through the at least one internal cooling passage; and

wherein the at least one corresponding opening includes an opening to a squealer tip pocket of the body or an opening to a tip shelf of the body.

2. The gaspath component of claim 1 , wherein the first face defines an angle of at least 15 degrees relative to the expected flow of fluid.

3. The gaspath component of claim 1 , wherein the at least one particulate redirection feature is integral to the body.

4. The gaspath component of claim 1 , wherein the first face is a planar surface.

5. The gaspath component of claim 1 , wherein the at least one corresponding opening includes the opening to the squealer tip pocket of the body.

6. The gaspath component of claim 1 , wherein the at least one corresponding opening includes the opening to the tip shelf of the body.

7. The gaspath component of claim 1 , wherein the second face is configured to redirect particulate to a second opening of the at least one corresponding opening.

8. The gaspath component of claim 1 , wherein the particulate redirection feature is disposed at a radially outermost tip of the body.

9. The gaspath component of claim 1 , wherein the particulate redirection feature is inset from a radially outermost tip of the body.

10. The gas turbine engine of claim 1 , wherein the body is a rotor blade.

11. A gas turbine engine comprising:

a compressor section;

a combustor section fluidly connected to the compressor section;

a turbine section fluidly connected to the compressor section and including a plurality of turbine stages; and

a rotor body disposed in one of said turbine stages, the rotor body including at least one internal cooling passage, the at least one internal cooling passage includes at least one particulate redirection feature defined at an end of the body opposite a platform and the at least one particulate redirection feature having a chevron cross section including a first face oblique to and facing an expected fluid flow direction through the at least one internal cooling passage and a second face oblique to and facing the expected fluid flow direction, the first and second faces joining at a point and defining at least one corresponding opening;

wherein the point is the upstream most position of the particulate redirection feature relative to the expected flow of fluid through the at least one internal cooling passage; and

%wherein the at least one corresponding opening includes an opening to a squealer tip pocket of the body or an opening to a tip shelf of the body.

12. The gas turbine engine of claim 11 , wherein the rotor body is a turbine blade of a high pressure turbine in said turbine section.

13. The gas turbine engine of claim 12 , wherein the rotor body is a first stage turbine blade of the high pressure turbine in said turbine section.

Assignments (4)
CHANGE OF NAME Recorded Jul 27, 2023
From: RAYTHEON TECHNOLOGIES CORPORATION
To: RTX CORPORATION
Reel/Frame 064714/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE SPELLING ON THE ADDRESS 10 FARM SPRINGD ROAD FARMINGTONCONNECTICUT 06032 PREVIOUSLY RECORDED ON REEL 057190 FRAME 0719. ASSIGNOR(S) HEREBY CONFIRMS THE CORRECT SPELLING OF THE ADDRESS 10 FARM SPRINGS ROAD FARMINGTON CONNECTICUT 06032. Recorded Aug 19, 2021
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 057226/0390 →
CHANGE OF NAME Recorded Aug 16, 2021
From: UNITED TECHNOLOGIES CORPORATION
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 057190/0719 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 15, 2020
From: PRENTER, ROBIN; JENNINGS, TIMOTHY J.; CLUM, CAREY
To: UNITED TECHNOLOGIES CORPORATION
Reel/Frame 051523/0593 →