Thermal management article and method of forming the same, and method of thermal management of a substrate

Patent metadata

Field	Value
Publication number	US-9624779-B2
Application number	US-201314053758-A
Country	US
Kind code	B2
Filing date	Oct 15, 2013
Priority date	Oct 15, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A thermal management article, a method for forming a thermal management article and a thermal management method are disclosed. Forming a thermal management article includes forming a duct adapted to be inserted into a groove on the surface of a substrate, and attaching the duct to the groove so that the top outer surface of the duct is substantially flush with the surface of the substrate. Thermal management of a substrate includes transporting a fluid through the duct of a thermal management article to alter the temperature of the substrate.

First claim

What is claimed is:

1. A method for forming a thermal management article comprising the steps of:
providing a substrate, wherein the substrate includes a surface, and wherein the surface includes at least one groove formed therein, the at least one groove including a groove geometry;
forming at least one duct adapted to be inserted into the at least one groove, forming the at least one duct including forming the at least one duct to have a duct geometry, wherein the at least one duct includes:
a length;
at least one inner surface defining at least one fluid pathway through the at least one duct;
an outer surface including a top portion and a bottom portion, the duct geometry at the bottom portion conforming to the groove geometry and the duct geometry at the top portion conformed to be substantially flush with the surface of the substrate; and
a wall thickness between the at least one inner surface and the outer surface, wherein the wall thickness includes a top wall thickness between the top portion of the outer surface and the at least one inner surface; and

then inserting the at least one duct into the at least one groove and attaching the at least one duct to the at least one groove, wherein the bottom portion of the outer surface of the at least one duct is within the at least one groove and the top portion of the outer surface of the at least one duct is substantially flush with the surface of the substrate.

2. The method of claim 1 , wherein the top wall thickness is less than about 0.02 inches.

3. The method of claim 1 , wherein the at least one fluid pathway has a fluid pathway geometry, and wherein the fluid pathway geometry changes along the length of the at least one duct.

4. The method of claim 1 , wherein the at least one inner surface of the at least one duct comprises at least one feature to disrupt laminar flow of a fluid both prior to and following inserting the at least one duct into the at least one groove.

5. The method of claim 1 , wherein the substrate is a turbine component selected from the group consisting of a turbine shroud, a turbine bucket, turbine nozzle, or combinations thereof.

6. The method of claim 1 , wherein attaching the at least one duct to the at least one groove comprises welding or brazing the at least one duct to the at least one groove.

7. The method of claim 1 , wherein the at least one duct is formed by a three-dimensional printing process.

8. The method of claim 7 , wherein the three-dimensional printing process comprises distributing a material to a selected region and selectively melting the material with a laser or electron beam.

9. A method for thermal management of a substrate comprising the steps of:
providing a substrate, wherein the substrate includes a surface, and wherein the surface includes at least one groove formed therein, the at least one groove including a groove geometry;
forming at least one duct adapted to be inserted into the at least one groove, forming the at least one duct including forming the at least one duct to have a duct geometry, wherein the at least one duct includes:
a length;
at least one inner surface defining at least one fluid pathway through the at least one duct;
an outer surface including a top portion and a bottom portion, the duct geometry at the bottom portion conforming to the groove geometry and the duct geometry at the top portion conformed to be substantially flush with the surface of the substrate; and
a wall thickness between the at least one inner surface and the outer surface, wherein the wall thickness includes a top wall thickness between the top portion of the outer surface and the at least one inner surface;

then inserting the at least one duct into the at least one groove and attaching the at least one duct to the at least one groove, wherein the bottom portion of the outer surface of the at least one duct is within the at least one groove and the top portion of the outer surface of the at least one duct is substantially flush with the surface of the substrate; and
transporting a fluid through the at least one fluid pathway within the at least one inner surface of the at least one duct to alter the temperature of the substrate.

10. The method of claim 9 , wherein the top wall thickness is less than about 0.02 inches.

11. The method of claim 9 , wherein the at least one fluid pathway has a fluid pathway geometry, and wherein the fluid pathway geometry changes along the length of the at least one duct.

12. The method of claim 9 , wherein the at least one inner surface of the at least one duct comprises at least one feature to disrupt laminar flow of a fluid both prior to and following inserting the at least one duct into the at least one groove.

13. The method of claim 9 , wherein the substrate is a turbine component selected from the group consisting of a turbine shroud, a turbine bucket, turbine nozzle, or combinations thereof.

14. The method of claim 9 , wherein attaching the at least one duct to the at least one groove comprises welding or brazing the at least one duct to the at least one groove.

15. The method of claim 9 , wherein the at least one duct is formed by a three-dimensional printing process.

16. The method of claim 15 , wherein the three-dimensional printing process comprises distributing a material to a selected region and selectively melting the material with a laser or electron beam.

17. A thermal management article, comprising:
a substrate, wherein the substrate includes a surface, and wherein the surface includes at least one groove formed therein; and
at least one duct inserted into the at least one groove, wherein the at least one duct is a single homogenous piece including:
a length;
at least one inner surface defining at least one fluid pathway through the at least one duct;
an outer surface including a top portion and a bottom portion, wherein:
the bottom portion is within the at least one groove; and
the top portion is substantially flush with the surface of the substrate; and

a wall thickness between the at least one inner surface and the outer surface, wherein the wall thickness includes a top wall thickness between the top portion of the outer surface and the at least one inner surface,

wherein the thermal management article is a turbine component.

18. The article of claim 17 , wherein the top wall thickness is less than about 0.02 inches.

19. The article of claim 17 , wherein the at least one fluid pathway has a fluid pathway geometry, and wherein the fluid pathway geometry changes along the length of the at least one duct.

20. The article of claim 17 , wherein the at least one inner surface of the at least one duct comprises a feature to disrupt laminar flow of a fluid.

21. The article of claim 17 , wherein the at least one duct is attached to the substrate by at least one of a braze layer and a weld zone.

22. The article of claim 17 , wherein the at least one duct includes a material composition selected from the group consisting of nickel-based superalloys, cobalt-based superalloys, stainless steels, alloy steels, titanium alloys, aluminum alloys, vanadium alloys, and combinations thereof.

23. The article of claim 22 , wherein the at least one duct is attached to the substrate by at least one of a braze layer and a weld zone.

Assignees

• Gen Electric

Inventors

• Schick David Edward
• Kottilingam Srikanth Chandrudu
• Lacy Benjamin Paul
• Cui Yan
• Tollison Brian Lee

Classifications

• F05D2250/294

  grooved · CPC title

• F05D2230/51

  in a modular way, e.g. using several identical or complementary parts or features · CPC title

• F05D2230/232

  by welding · CPC title

• F05D2240/12

  Fluid guiding means, e.g. vanes · CPC title

• F05D2260/2212

  by creating turbulence · CPC title