Combustor heat-shield cooling via integrated channel
US-2015096302-A1 · Apr 9, 2015 · US
Heat shield labyrinth seal
US9534785B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9534785-B2 |
| Application number | US-201414468776-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 26, 2014 |
| Priority date | Aug 26, 2014 |
| Publication date | Jan 3, 2017 |
| Grant date | Jan 3, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A seal for sealing a combustor heat shield against an interior surface of a combustor shell, the seal comprising: a first sealing surface on the interior surface of the combustor shell; and a second sealing surface on a rail on an edge of a heat shield, wherein each of the first and second sealing surfaces include first and second projections defining a non-linear leakage path between the projections.
First claim
Opening claim text (preview).
We claim: 1. A seal for sealing a gap between a combustor heat shield and an interior surface of a combustor shell, the seal comprising: a first sealing surface on the interior surface of the combustor shell; and a second sealing surface on a rail extending from the combustor heat shield, wherein the first and second sealing surfaces respectively include first and second projections, which jointly define a non-linear leakage path between the projections, and wherein the first and second projections each comprise a serrated series of mating triangular ridges. 2. The seal according to claim 1 wherein the first projections are manufactured using a direct metal laser sintering (DMLS) process. 3. The seal according to claim 1 wherein the second projections are manufactured using a metal injection molding (MIM) process. 4. A gas turbine engine combustor comprising: a combustor shell, a heat shield having a back face positioned in spaced-apart facing relationship with an interior surface of the combustor shell to define an air gap between the heat shield and the combustor shell, a first sealing surface on the interior surface of the combustor shell; and a second sealing surface on a rail extending from the back face of the combustor heat shield, the first and second sealing surfaces respectively having first and second projections, which jointly define a non-linear leakage path between the projections, wherein the first and second projections comprise a serrated series of mating triangular ridges.
Assignees
Inventors
Classifications
Effusion cooled combustion chamber walls or domes · CPC title
constructed mainly of ceramic components · CPC title
- F23R3/005Primary
Combined with pressure or heat exchangers · CPC title
- F02C7/18Primary
the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} · CPC title
Arrangement of apertures along the flame tube · CPC title
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- What does patent US9534785B2 cover?
- A seal for sealing a combustor heat shield against an interior surface of a combustor shell, the seal comprising: a first sealing surface on the interior surface of the combustor shell; and a second sealing surface on a rail on an edge of a heat shield, wherein each of the first and second sealing surfaces include first and second projections defining a non-linear leakage path between …
- Who is the assignee on this patent?
- Pratt & Whitney Canada
- What technology area does this patent fall under?
- Primary CPC classification F23R3/005. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 03 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).