Ventilation device comprising at least one automatically closing flap, aircraft comprising at least one such ventilation device

Patent metadata

Field	Value
Publication number	US-2024391297-A1
Application number	US-202418673949-A
Country	US
Kind code	A1
Filing date	May 24, 2024
Priority date	May 26, 2023
Publication date	Nov 28, 2024
Grant date	—

Abstract

A ventilation device comprising a ventilation grille comprising a frame delimiting at least one opening, at least one flap designed to be in an open state in which the flap at least partially opens the opening and a closed state in which the flap blocks the opening, at least one articulation connecting the flap and the frame, a closed position holding system that is elastically deformable and designed to push and hold the flap in the closed state, an open position holding system that is fusible and designed to hold the flap in the open state against the closed position holding system, enabling the flap to be closed automatically. Also an aircraft having at least one such ventilation device.

First claim

Claimed is:

1 . A ventilation device including a ventilation grille that separates an inner zone and an outer zone and comprises a frame as well as at least one opening delimited by the frame and designed to enable an air flow to flow between the inner and outer zones, wherein the ventilation device comprises:
at least one flap configured to be in an open state in which the at least one flap at least partially opens the at least one opening and a closed state in which the at least one flap blocks the at least one opening, at least one articulation connecting the at least one flap and the frame, a closed position holding system that is elastically deformable and configured to push and hold the at least one flap in the closed state, and an open position holding system that is fusible and configured to hold the at least one flap in the open state against the closed position holding system, wherein the articulation and the closed position holding system are the same thing.

2 . The ventilation device as claimed in claim 1 , wherein the at least one flap is positioned in the inner zone.

3 . The ventilation device as claimed in claim 1 , wherein the articulation is located upstream of the at least one opening in an upstream/downstream direction,
wherein the at least one flap has a first edge connected to the articulation as well as a second edge remote from the first edge, said second edge being separated from the frame when the at least one flap is in the open state and immediately beside the frame when the at least one flap is in the closed state.

4 . The ventilation device as claimed in claim 1 , wherein the articulation comprises a first flange rigidly connected to the frame, a second flange rigidly connected to the at least one flap, and an intermediate zone connecting the first and second flanges and designed to move the second flange toward the frame by elastic deformation.

5 . The ventilation device as claimed in claim 4 , wherein the flap comprises a curved extension that is pressed against the second flange of the articulation and connected to the articulation.

6 . The ventilation device as claimed in claim 1 , wherein the open position holding system comprises at least one fusible spacer interposed between the at least one flap and the ventilation grille, positioned at least partially level with the at least one opening, and configured to hold the at least one flap away from the ventilation grille against the forces exerted by the closed position holding system.

7 . The ventilation device as claimed in claim 6 , wherein each fusible spacer is a strip of material having a length in an order of 125 mm, a width between 10 and 45 mm, and a thickness between 1 and 6 mm.

8 . The ventilation device as claimed in claim 6 , wherein each fusible spacer is made of plastic or composite having a melting temperature between 100° C. and 400° C.

9 . The ventilation device as claimed in claim 6 , wherein the frame has front and rear sides parallel to each other, and right- and left-hand sides parallel to each other, the at least one flap being connected to the front side by the articulation, and
wherein the open position holding system comprises first and second fusible spacers, the first fusible spacer connecting the flap and the right-hand side of the frame, the second fusible spacer connecting the flap and the left-hand side of the frame.

10 . The ventilation device as claimed in claim 9 , wherein each fusible spacer comprises a first end connected to the at least one flap by a first connection, and a second end connected to the frame by a second connection, the first and second fusible spacers being connected to the at least one flap by a first shared connection.

11 . The ventilation device as claimed in claim 9 , wherein the first connection comprises a folded lug positioned equidistantly from the right- and left-hand sides, having a first flange fastened to the at least one flap and a second flange to which the first ends of the first and second fusible spacers are fastened.

12 . The ventilation device as claimed in claim 10 , wherein, for each of the first and second spacers, the second connection comprises a folded lug positioned on the right- or left-hand side of the frame, having a first flange fastened to the right- or left-hand side of the frame and a second flange to which the second end of the first or second fusible spacer is fastened.

13 . An aircraft comprising:
the ventilation device as claimed in claim 1 .

Assignees

• Airbus Operations Sas
• Airbus Operations Gmbh

Inventors

• Furiasse Passalacqua Nicolas
• Casse Christophe

Classifications

• B64D2045/009

  Fire detection or protection; Erosion protection, e.g. from airborne particles · CPC title

• B64D45/00

  Aircraft indicators or protectors not otherwise provided for · CPC title

• B64D29/00

  Power-plant nacelles, fairings or cowlings · CPC title

• B64C1/0009 Primary

  Aerodynamic aspects · CPC title

• B64D25/00

  Emergency apparatus or devices, not otherwise provided for · CPC title