Overhead flow distribution assembly for aircraft cabin

Patent metadata

Field	Value
Publication number	US-2020385129-A1
Application number	US-201816772508-A
Country	US
Kind code	A1
Filing date	Dec 13, 2018
Priority date	Dec 18, 2017
Publication date	Dec 10, 2020
Grant date	—

Abstract

An overhead flow distribution assembly for an aircraft cabin, including a conduit defining a plenum having an inlet, upper outlets and lower outlets, the upper outlets spaced apart from each other along a longitudinal direction of the aircraft, the lower outlets spaced apart from each other along the longitudinal direction, the inlet being located between the upper outlets and the lower outlets, and a baffle extending within the plenum along the longitudinal direction, the baffle being located between the upper outlets and at least part of the inlet along a transverse direction normal to the longitudinal direction, the baffle having openings defined therethrough, the baffle configured to restrict airflow from the at least part of the inlet toward the upper outlets. A method of balancing a flow in an overhead flow distribution assembly for an aircraft cabin is also discussed.

First claim

1 . An overhead flow distribution assembly for an aircraft cabin, the assembly comprising:
a conduit defining a plenum having an inlet, upper outlets and lower outlets, the upper outlets spaced apart from each other along a longitudinal direction of the aircraft, the lower outlets spaced apart from each other along the longitudinal direction, the inlet being located between the upper outlets and the lower outlets; and a baffle extending within the plenum along the longitudinal direction, the baffle being located between the upper outlets and at least part of the inlet along a transverse direction normal to the longitudinal direction, the baffle having openings defined therethrough, the baffle configured to restrict airflow from the at least part of the inlet toward the upper outlets.

2 . The assembly as defined in claim 1 , wherein the upper outlets are defined by a first array of slots through a first wall extending along the longitudinal direction, and the lower outlets are defined by a second array of slots through a second wall extending along the longitudinal direction.

3 . The assembly as defined in claim 1 , wherein the plenum includes a first portion adjacent the upper outlets and a second portion extending from the first portion to the lower outlets, the second portion defining a flow restriction with respect to the first portion, the baffle extending within the first portion.

4 . The assembly as defined in claim 3 , wherein the inlet is defined by at least one opening through a wall of the conduit, the wall extending along the longitudinal direction, the inlet in direct fluid communication with the second portion.

5 . The assembly as defined in claim 1 , wherein the conduit has two opposed ends spaced apart along the longitudinal direction, one of the opposed ends including the inlet.

6 . The assembly as defined in claim 5 , wherein a first distance measured along the transverse direction between the upper outlets and the inlet is smaller than a second distance measured along the transverse direction between the lower outlets and the inlet.

7 . The assembly as defined in claim 5 , wherein the baffle has an end extending across the inlet.

8 . The assembly as defined in claim 7 , further comprising an end wall extending transversely to the longitudinal direction and connected to the end of the baffle, the end wall obstructing part of the inlet.

9 . The assembly as defined in claim 1 , wherein the conduit is a first conduit, the inlet defined by at least one opening through a wall of the first conduit, the wall extending along the longitudinal direction, the first baffle located between the upper outlets and the inlet, the assembly further comprising:
a second conduit extending adjacent the first conduit along the longitudinal direction, the second conduit defining a second plenum having a second inlet, second upper outlets and second lower outlets, the second upper outlets spaced apart from each other along the longitudinal direction, the second lower outlets spaced apart from each other along the longitudinal direction, the second inlet being located between the second upper outlets and the second lower outlets, the second inlet located in an end of the second conduit adjacent the first conduit and defining a fluid communication between the plenum of the first conduit and the second plenum; and a second baffle extending along the longitudinal direction within the second plenum, the second baffle being located between the second upper outlets and at least part of the second inlet along the transverse direction, the second baffle having openings defined therethrough and being configured to restrict airflow from the second inlet toward the second upper outlets.

10 . The assembly as defined in claim 9 , wherein the second baffle has an end extending across the second inlet, the second baffle further comprising an end wall extending transversely to the longitudinal direction and connected to the end of the second baffle, the end wall obstructing part of the second inlet.

11 . The assembly as defined in claim 9 , further comprising:
a third conduit, the first conduit being located between the second and third conduits along the longitudinal direction, the third conduit defining a third plenum having a third inlet, third upper outlets and third lower outlets, the third upper outlets spaced apart from each other along the longitudinal direction, the third lower outlets spaced apart from each other, the third inlet being located between the third upper outlets and the third lower outlets along the transverse direction, the third inlet being located in an end of the third conduit adjacent the first conduit and defining a fluid communication between the plenum of the first conduit and the third plenum; and a third baffle extending along the longitudinal direction within the third plenum, the third baffle being located between the third upper outlets and at least part of the third inlet along the transverse direction, the third baffle having openings defined therethrough and being configured to restrict an airflow from the third inlet toward the third upper outlets.

12 . An overhead flow distribution assembly for an aircraft cabin, the assembly comprising:
a conduit having a plurality of interconnected walls including longitudinal walls configured to extend along a longitudinal direction of the aircraft and opposed end walls spaced apart along the longitudinal direction, the interconnected walls cooperating to define a plenum, one of the interconnected walls having an inlet defined therethrough in fluid communication with the plenum, the longitudinal walls including first and second longitudinal walls spaced apart from each other along a transverse direction normal to the longitudinal direction, the inlet being located between the first and second longitudinal walls, the first longitudinal wall having a first plurality of slots defined therethrough defining upper outlets in fluid communication with the plenum, the second longitudinal wall having a second plurality of slots defined therethrough defining lower outlets in fluid communication with the plenum; and a baffle defining a longitudinally extending partition in the plenum, the upper outlets being located on one side of the partition, the lower outlets and at least part of the inlet being located on an opposed side of the partition, the baffle having openings defined therethrough, the baffle configured to restrict an airflow from the at least part of the inlet toward the upper outlets.

13 . The assembly as defined in claim 12 , wherein the baffle is connected to the first longitudinal wall and to a third one of the longitudinal walls located between the first and second longitudinal wall.

14 . The assembly as defined in claim 13 , wherein the inlet is defined by at least one opening through the third longitudinal wall.

15 . The assembly as defined in claim 12 , wherein the inlet is defined by at least one opening through one of the opposed end walls.

16 . The assembly as defined in claim 15 , wherein the baffle has an end extending across the inlet.

17 . The assembly as defined in claim 16 , further comprising a baffle end wall extending transversely to the longitudinal direction and connected to the end of the baffle, the baffle end wall obstructing part of the inlet.

18 . The assembly as defined in claim 12 , wherein the plenum includes a first portion adjacent the upper outlets and a second portion extending from the first portion to the lower outlets, the second portion defining a flow restr

Assignees

• Bombardier Inc

Inventors

• Wang Hongzhi

Classifications

• B64D13/00 Primary

  Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space · CPC title

• F24F13/072

  of elongated shape, e.g. between ceiling panels · CPC title

• F24F7/04

  with ducting systems {, e.g. by double walls; with natural circulation (F24F7/02 takes precedence)} · CPC title

• B64D2013/0625

  comprising means for distribution effusion of conditioned air in the cabin · CPC title

• B64D2013/003

  Cabin ventilation nozzles · CPC title