Additively manufactured hollow body component with interior curved supports

Patent metadata

Field	Value
Publication number	US-10844724-B2
Application number	US-201715632656-A
Country	US
Kind code	B2
Filing date	Jun 26, 2017
Priority date	Jun 26, 2017
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

A hollowed body component made by additive manufacturing is disclosed. The hollow body has a longitudinal extent, an exterior surface and an interior surface, the interior surface having a first side and an opposing, second side. A first set of curved supports are curved along lengths thereof and extend between the first side and the opposing, second side to support the hollow body at least during the additive manufacturing thereof. Some embodiments include cooling passages open to the interior surface. Here, the curved supports extend between opposing pairs of passage-free spaces on the interior surface to support the hollow body at least during the additive manufacturing thereof. In one example, the component is an impingement insert for a hot gas path component.

First claim

What is claimed is:

1. A component made by additive manufacturing, the component comprising:
a hollow body having a longitudinal extent, an exterior surface and an interior surface, the interior surface having a first side and an opposing, second side;
a first set of curved supports curved along lengths thereof and extending between the first side and the opposing, second side to support the hollow body, wherein the first set of curved supports includes a cross-bar arrangement, wherein the first set of curved supports is formed in a double curve from two of an axial direction, a circumferential direction, and a radial direction, and wherein the first set of curved supports form a lattice support, and wherein the first set of curved supports are formed in an open-cell format; and
a plurality of cooling passages open to the interior surface, the plurality of cooling passages arranged on the interior surface to have a first opposing pair of a first passage-free space extending along a first portion of the longitudinal extent on the first side and a second, opposing passage-free space extending along a second portion of the longitudinal extent on the opposing, second side, wherein each passage-free space forms a connection area for one of the curved supports, and wherein the curved supports couple to the first side or the second side;
wherein the first set of curved supports each extend between the first opposing pair of the first passage-free space and the second, opposing passage-free space to support the hollow body, and wherein each passage-free space includes a fin extending therefrom, each of the first set of curved supports coupled at opposing ends thereof to a respective fin.

2. The component of claim 1 , wherein at least one of the first and second passage-free spaces extend in a non-linear layout, and each of the first set of curved supports curve to accommodate the non-linear layout.

3. The component of claim 2 , wherein the first set of curved supports collectively are arranged in a twisted plane.

4. The component of claim 1 , wherein the first plurality of cooling passages are arranged on the interior surface to have at least one second opposing pair of the first passage-free space extending along the first portion of the longitudinal extent on the first side and the second, opposing passage-free space extending along the second portion of the longitudinal extent on the opposing, second side; and
further comprising a second set of curved supports curved along lengths thereof and extending between each of the at least one second opposing pair of the first passage-free space and the second, opposing passage-free space to support the hollow body.

5. The component of claim 1 , wherein the component is an impingement insert for a hot gas path component, and further comprising a plurality of seating fins extending from the exterior surface for positioning the component inside the hot gas path component.

6. The component of claim 1 , wherein the first set of curved supports have different spacing along at least one of the first and second portions of the longitudinal extent.

7. An impingement insert for a hot gas path component, the impingement insert made by additive manufacturing, the impingement insert comprising:
a hollow body having a longitudinal extent, an exterior surface and an interior surface, the interior surface having a first side and an opposing, second side;
a plurality of cooling passages passing between the exterior surface and the interior surface, the plurality of cooling passages arranged on the interior surface to have a first opposing pair of a first passage-free space extending along a first portion of the longitudinal extent on the first side and a second, opposing passage-free space extending along a second portion of the longitudinal extent on the opposing, second side; and
a first set of curved supports extending between the first opposing pair of the first passage-free space and the second, opposing passage-free space to support the hollow body, wherein the first set of curved supports includes a cross-bar arrangement, wherein the first set of curved supports is formed in a double curve from two of an axial direction, a circumferential direction, and a radial direction, wherein the first set of curved supports form a lattice support, and wherein the first set of curved supports are formed in an open-cell format, wherein each passage-free space forms a connection area for one of the curved supports, wherein the curved supports couple to the first side or the second side, and wherein the curved supports couple to the first side or the second side and wherein each passage-free space includes a fin extending therefrom, each of the first set of curved supports coupled at opposing ends thereof to a respective fin.

8. The impingement insert of claim 7 , wherein at least one of the first and second passage-free spaces extend in a non-linear layout, and the first set of curved supports curve to accommodate the non-linear layout.

9. The impingement insert of claim 8 , wherein each of the first set of curved supports curve to accommodate the non-linear layout.

10. The impingement insert of claim 9 , wherein the first set of curved supports collectively are arranged in a twisted plane.

11. The impingement insert of claim 7 , wherein the plurality of cooling passages are arranged on the interior surface to have at least one second opposing pair of the first passage-free space extending along the first portion of the longitudinal extent on the first side and the second, opposing passage-free space extending along the second portion of the longitudinal extent on the opposing, second side; and
further comprising a second set of curved supports extending between each of the at least one second opposing pair of the first passage-free space and the second, opposing passage-free space to support the hollow body.

12. The impingement insert of claim 7 , wherein the first set of curved supports have different spacing along at least one of the first and second portions of the longitudinal extent.

13. A non-transitory computer readable storage medium storing code representative of an impingement insert for a hot gas path component, the impingement insert physically generated upon execution of the code by a computerized additive manufacturing system, the code comprising:
code representing the impingement insert, the impingement insert including:
a hollow body having a longitudinal extent, an exterior surface and an interior surface, the interior surface having a first side and an opposing, second side;
a plurality of cooling passages passing between the exterior surface and the interior surface, the plurality of cooling passages arranged on the interior surface to have a first opposing pair of a first passage-free space extending along a first portion of the longitudinal extent on the first side and a second, opposing passage-free space extending along a second portion of the longitudinal extent on the opposing, second side; and
a first set of curved supports extending between the first opposing pair of the first passage-free space and the second, opposing passage-free space to support the hollow body, wherein the first set of curved supports includes a cross-bar arrangement, wherein the first set of curved supports is formed in a double curve from two of an axial direction, a circumferential direction, and a radial direction, wherein the first set of curved supports form a lattice support, and wherein the first set of curved supports are formed in an open-cell format, wherein each passage-free space forms a connection area for one of the curved supports,

Assignees

• Gen Electric

Inventors

• Packer Travis J
• Black Elisabeth Kraus
• Davidoff Robert William
• Snider Zachary John

Classifications

• F01D5/189 Primary

  the insert having a tubular cross-section, e.g. airfoil shape · CPC title

• B22F12/45

  Two or more · CPC title

• B22F10/47

  characterised by structural features · CPC title

• B22F10/32

  of the atmosphere, e.g. composition or pressure in a building chamber · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title