Structure ensuring attenuation of acoustic waves and thermal exchange

Patent metadata

Field	Value
Publication number	US-10480412-B2
Application number	US-201715583902-A
Country	US
Kind code	B2
Filing date	May 1, 2017
Priority date	May 3, 2016
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A structure ensuring acoustic attenuation of a flow of a first fluid and heat exchange between a first fluid and a second fluid. The structure includes a first wall which is perforated, a second wall, and a plurality of intermediate walls extending between the first wall and the second wall. For each intermediate wall, there is a pipe intended to receive the second fluid and inscribed within the intermediate wall. Such a structure makes it possible to optimally integrate the acoustic wave attenuation function and the heat exchange function.

First claim

The invention claimed is:

1. A structure for providing acoustic attenuation of a flow of a first fluid flowing along the structure, the structure comprising:
a first wall, which is perforated by a plurality of holes;
a second wall;
a plurality of intermediate walls extending between the first wall and the second wall;
a plurality of corridors defined between adjacent intermediate walls, the corridors being bounded by the first and second walls; and
a pipe configured to receive a second fluid, wherein each pipe is oriented along a length of, and inscribed within, one of the plurality of intermediate walls, and wherein the pipe is located a distance from both the first wall and the second wall;
wherein the structure is configured for a portion of the first flow to penetrate, via the holes formed in the first wall, into the corridors for heat exchange between the portion of the first fluid in the corridors and the second fluid in a corresponding pipe in one of the intermediate walls defining the corridor.

2. The structure according to claim 1 , wherein the first fluid is air and the second fluid is oil.

3. The structure according to claim 1 , wherein the first flow penetrates directly into each of the corridors via the holes formed in the first wall.

4. The structure according to claim 1 , wherein each pipe has an elliptical profile.

5. The structure according to claim 1 , comprising a partition wall integral with one or more of the plurality of intermediate walls and extending inside of the pipe and separating the pipe into two sub-pipes.

6. The structure according to claim 5 , wherein the partition wall is a corrugated plate.

7. The structure according to claim 5 , wherein the partition wall has through holes connecting both sides of the partition wall.

8. An aircraft having a pod, the pod having an inner wall that defines an air duct, an inner wall thereof comprising at least one structure according to claim 1 , wherein the first wall is oriented toward an inside of the air duct.

9. A structure for providing acoustic attenuation of a flow of a first fluid flowing along the structure, the structure comprising:
a first wall, which is perforated by a plurality of holes;
a second wall;
a plurality of intermediate walls extending between the first wall and the second wall, wherein one or more of the plurality of intermediate walls is in a form of a double wall comprising two parallel walls that extend between the first wall and the second wall and are separated by a free space forming a pipe configured to receive a second fluid; and
a plurality of corridors defined between adjacent intermediate walls, the corridors being bounded by the first and second walls;
wherein each pipe is oriented along a length of, and inscribed within, a corresponding one of the one or more of the plurality of intermediate walls in which the pipe is formed; and
wherein the structure is configured such for a portion of the first flow to penetrate, via the holes formed in the first wall, into the corridors for heat exchange between the portion of the first fluid in the corridors and the second fluid in a corresponding pipe in one of the intermediate walls defining the corridor.

10. The structure according to claim 9 , wherein the intermediate wall has a dividing wall which extends between the two parallel walls of the intermediate wall and which defines, at a level of the first wall, a chamber separated from the pipe by the dividing wall.

11. A structure according to claim 9 , comprising a partition wall integral with the one or more intermediate walls, the partition wall extending inside of the pipe and separating the pipe into two sub-pipes.

12. The structure according to claim 11 , wherein the partition wall is a corrugated plate.

13. The structure according to claim 11 , wherein the partition wall has through holes connecting both sides of the partition wall.

14. The structure according to claim 11 , wherein each partition wall has a part that extends beyond the first wall.

15. The structure according to claim 9 , wherein each intermediate wall has a part that extends beyond the first wall.

16. The structure according to claim 9 , comprising fins that extend along the first wall on a side thereof that is opposite the pipe, wherein each fin extends perpendicularly to the one or more intermediate walls and is integral with the first wall.

17. An aircraft having a pod, the pod having an inner wall that defines an air duct, an inner wall thereof comprising at least one structure according to claim 9 , wherein the first wall is oriented toward an inside of the air duct.

18. A structure providing acoustic attenuation of a flow of a first fluid flowing along the structure, the structure comprising:
a first wall, which is perforated by a plurality of holes;
a second wall;
a plurality of intermediate walls extending between the first wall and the second wall, wherein one or more of the plurality of intermediate walls is in a form of a double wall comprising two parallel walls that extend between the first wall and the second wall and are separated by a free space forming a pipe configured to receive a second fluid;
a plurality of corridors defined between adjacent intermediate walls, the corridors being bounded by the first and second walls;
a partition wall integral with one or more of the plurality of intermediate walls and extending inside of the pipe and separating the pipe into two sub-pipes; and
fins that extend along the first wall on a side thereof that is opposite the pipe, wherein each fin extends perpendicularly to the one or more intermediate walls and is integral with the first wall,
wherein each pipe is oriented along a length of, and inscribed within, a corresponding one of the one or more of the plurality of intermediate walls in which the pipe is formed,
wherein each pipe is located a distance from both the first wall and the second wall.

Assignees

• Airbus Operations Sas

Inventors

• Zebian Maxime

Classifications

• F02K1/827

  Sound absorbing structures or liners · CPC title

• F05D2260/213

  by the provision of a heat exchanger within the cooling circuit · CPC title

• F02C7/18

  the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} · CPC title

• F02K3/115

  by means of indirect heat exchange · CPC title

• B64C2230/14

  achieving noise reductions · CPC title