Shell and tiled liner arrangement for a combustor

Patent metadata

Field	Value
Publication number	US-9423129-B2
Application number	US-201314135350-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Mar 15, 2013
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A combustor adapted for use in a gas turbine engine is disclosed. The combustor includes a metallic shell forming a cavity and a ceramic liner arranged in the cavity of the metallic shell. The ceramic liner defines a combustion chamber in which fuel is burned during operation of a gas turbine engine. The ceramic liner includes a plurality of ceramic tiles mounted to the metallic shell and arranged to shield the metallic shell from heat generated in the combustion chamber.

First claim

What is claimed is:

1. A combustor for use in a gas turbine engine, the combustor comprising
an annular metallic shell forming an annular cavity, the annular metallic shell including an outer shell member and an inner shell member nested concentrically inside the outer shell member, and
an annular liner arranged in the annular cavity of the annular metallic shell and defining an annular combustion chamber, the annular liner including a plurality of ceramic tiles arranged to shield the annular metallic shell from combustion in the combustion chamber,
wherein one of the outer shell member and the inner shell member of the annular metallic shell includes a wall and a plurality of dimples extending from the wall toward the annular liner and each of the plurality of ceramic tiles is formed to include a hollow sized and arranged to receive at least a portion of one of the dimples included in the annular metallic shell.

2. The combustor of claim 1 , wherein each of the plurality of ceramic tiles includes a body and a tab, the body arranged around the combustion chamber and formed to include the hollow sized to receive at least a portion of one of the dimples, and the tab coupled to a wall included in the annular metallic shell.

3. The combustor of claim 2 , wherein the tab of a first ceramic tile is coupled to one of the walls included in the metallic shell by a fastener that extends through the tab of the first ceramic tile and a second ceramic tile is arranged between the tab of the first ceramic tile and the combustion chamber so that the fastener is shielded by the second ceramic tile from heat generated in the combustion chamber.

4. The combustor of claim 2 , wherein the body of each of the plurality of ceramic tiles is arranged around the combustion chamber to define the combustion chamber and the tab of each ceramic tile is spaced in a radial direction from the combustion chamber.

5. The combustor of claim 2 , wherein the hollow is sized so that a substantially uniform distance is maintained between the body of a first ceramic tile and a dimple received in the body of the first ceramic tile.

6. The combustor of claim 1 , wherein both of the outer shell member and the inner shell member of the annular metallic shell includes a wall and a plurality of dimples extending from the wall toward the annular liner.

7. The combustor of claim 6 , wherein a plurality of cooling holes are formed through the dimples of the outer shell member and a plurality of cooling holes are formed through the dimples of the inner shell member to allow cooling air to be directed onto the plurality of ceramic tiles.

8. The combustor of claim 1 , wherein a first ceramic tile included in the annular line is coupled to the annular metallic shell by a fastener and a portion of a second ceramic tile is arranged between the fastener and the combustion chamber to shield the fastener from heat generated in the combustion chamber.

Assignees

• Rolls Royce Corp

Inventors

• Graves Charles B
• Cummings Iii William G
• Bennett Russell N
• Shi Jun

Classifications

• F05D2260/201

  by impingement of a fluid · CPC title

• Y10T29/49229

  Prime mover or fluid pump making · CPC title

• F23R3/002 Primary

  Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title

• F23R3/007

  constructed mainly of ceramic components · CPC title

• F23R2900/00017

  Assembling combustion chamber liners or subparts · CPC title