Internal heat exchanger system to cool gas turbine engine components

Patent metadata

Field	Value
Publication number	US-10823069-B2
Application number	US-201816185565-A
Country	US
Kind code	B2
Filing date	Nov 9, 2018
Priority date	Nov 9, 2018
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A high pressure compressor section of a gas turbine engine including: an inner case separating a core flow path of the gas turbine engine and a plenum formed between the inner case and an outer case; a bleed port located on an inner surface of the inner case, the inner surface being proximate the core flow path; an outlet located on an outer surface of the inner case, the outer surface being proximate the plenum; and a bleed air passageway passing through the inner case to fluidly connect the bleed port to the outlet, wherein the bleed air passageway is fluidly connected to the core flow path through the bleed port and the bleed air passageway is fluidly connected to the plenum through the outlet.

First claim

What is claimed is:

1. A high pressure compressor section of a gas turbine engine, the high pressure compressor section comprising:
an inner case separating a core flow path of the gas turbine engine and a plenum formed between the inner case and an outer case;
a bleed port located on an inner surface of the inner case, the inner surface being proximate the core flow path;
an outlet located on an outer surface of the inner case, the outer surface being proximate the plenum; and
a bleed air passageway passing through the inner case to fluidly connect the bleed port to the outlet, wherein the bleed air passageway is fluidly connected to the core flow path through the bleed port and the bleed air passageway is fluidly connected to the plenum through the outlet;
wherein the bleed air passageway passes radially outward of a first vane and a second vane.

2. The high pressure compressor section of claim 1 , wherein the outlet is located radially outward of the second vane.

3. The high pressure compressor section of claim 1 , wherein an outer diameter end of the first vane is located within a first vane slot within the inner case, the first vane being secured to the first vane slot through the outer diameter end of the first vane, wherein the bleed air passageway further comprises the first vane slot.

4. The high pressure compressor section of claim 1 , wherein an outer diameter end of the second vane is located within a second vane slot within the inner case, the second vane being secured to the second vane slot through the outer diameter end of the second vane, wherein the bleed air passageway further comprises the second vane slot.

5. The high pressure compressor section of claim 3 , further comprising:
a seal wrapped around the outer diameter end of the first vane within the first vane slot, the seal being configured to fluidly separate the bleed air passageway from the core flow path within the first vane slot.

6. The high pressure compressor section of claim 1 , further comprising:
a first mounting flange including a first interrupted snap;
a second mounting flange secures to the inner case, the inner case including a second interrupted snap, wherein the bleed air passage passes through the first interrupted snap and the second interrupted snap.

7. The high pressure compressor section of claim 6 , further comprising:
a first fluid passageway within the inner case, the first fluid passageway fluidly connecting the bleed port to the first interrupted snap.

8. The high pressure compressor section of claim 7 , further comprising:
a first vane slot configured to receive an outer diameter end of a first vane, wherein the first vane slot is fluidly connected to the first fluid passageway through the first interrupted snap.

9. The high pressure compressor section of claim 8 , further comprising:
a second fluid passageway within the inner case, the second fluid passageway being fluidly connected to the second vane slot through the second interrupted snap.

10. The high pressure compressor section of claim 9 , wherein the second fluid passageway is fluidly connected to the outlet.

11. The high pressure compressor section of claim 10 , further comprising:
a second vane slot configured to receive an outer diameter end of a second vane, wherein the second fluid passageway is fluidly connected to the outlet through the second vane slot.

12. The high pressure compressor section of claim 11 , wherein the second vane slot is fluidly connected to the outlet through a third fluid passage within the inner case.

13. The high pressure compressor section of claim 1 , wherein the bleed air passageway further comprises:
a second vane slot configured to receive an outer diameter end of a second vane.

14. The high pressure compressor section of claim 1 , wherein the bleed air passageway further comprises:
a first fluid passageway within the inner case, the first fluid passageway being fluidly connected to the bleed port;
a first vane slot configured to receive an outer diameter end of a first vane, the first vane slot being fluidly connected to the first fluid passageway;
a second fluid passageway within the inner case, the second fluid passageway fluidly connected the first vane slot;
a second vane slot configured to receive an outer diameter end of a second vane, the second vane slot being fluidly connected to the second fluid passageway; and
a third fluid passageway within the inner case, the third fluid passageway fluidly connecting the second vane slot to the outlet.

15. The high pressure compressor section of claim 14 , further comprising:
a first mounting flange including a first interrupted snap;
a second mounting flange secures to the inner case, the inner case including a second interrupted snap, wherein the first vane slot is fluidly connected to the first fluid passageway through the first interrupted snap, and wherein the second vane slot is fluidly connected to the second fluid passageway through the second interrupted snap.

16. The high pressure compressor section of claim 15 , wherein the second vane is an exit guide vane for directing compressed inlet air from the core flow path into a combustor of the gas turbine engine.

17. The high pressure compressor section of claim 15 , further comprising:
a heat shield interposed between the first mounting flange and the bleed air passageway.

18. A method of cooling a high pressure compressor section of a gas turbine engine, the method comprising
siphoning compressed inlet air from a high pressure compressor section of a gas turbine engine;
directing siphoned compressed inlet air through a bleed air passageway passing through an inner case of the high pressure compressor section, the inner case separating a core flow path of the gas turbine engine and a plenum formed between the inner case and an outer case; and
expelling the siphoned compressed inlet air into the plenum,
wherein the bleed air passageway passes radially outward of a first vane and a second vane.

19. A gas turbine engine, comprising:
a high pressure compressor section comprising:
an inner case separating a core flow path of the gas turbine engine and a plenum formed between the inner case and an outer case;
a bleed port located on an inner surface of the inner case, the inner surface being proximate the core flow path;
an outlet located on an outer surface of the inner case, the outer surface being proximate the plenum; and
a bleed air passageway passing through the inner case to fluidly connect the bleed port to the outlet, wherein the bleed air passageway is fluidly connected to the core flow path through the bleed port and the bleed air passageway is fluidly connected to the plenum through the outlet,
wherein the bleed air passageway passes radially outward of a first vane and a second vane.

Assignees

• United Technologies Corp
• Raytheon Tech Corp

Inventors

• Dibenedetto Enzo
• Bintz Matthew E

Classifications

• F05D2220/323

  for aircraft propulsion, e.g. jet engines · CPC title

• F01D25/12

  Cooling · CPC title

• F05D2260/232

  characterized by the cooling medium · CPC title

• F05D2260/606

  Bypassing the fluid · CPC title

• F02C7/141

  of working fluid · CPC title