DEVICE FOR VENTING AIR FROM OR SUPPLYING AIR TO A ROOM

Abstract

The invention relates to a device for venting or supplying air to a room, said room being delimited by walls. The room is completely surrounded by the walls and has a ventilation system for supplying an airflow in order to exchange the air in the room with the air outside of the room. For this purpose, the closed room is interrupted by an opening through which the airflow can enter or exit the room. The opening is then covered by at least three perforated plates, wherein the perforated plates are arranged in a layered manner relative to one another, and the perforated plates have two different degrees of hardness.

Claims

1. A device for removing air from, or supplying air to, a space that is surrounded by walls, the device comprising: a ventilation system for generating an air flow; an opening in at least one of the walls at which the air flow begins or ends; at least three perforated plates covering the opening, the perforated plates being arranged in layers relative to one another, the perforated plates having two different hardnesses.

2. The device as claimed in claim 1, wherein two outer perforated plates exhibit a greater hardness by comparison with a perforated plate located therebetween.

3. The device as claimed in claim 1, wherein the perforated plates have perpendicularly running holes (4).

4. The device as claimed in claim 1, wherein the perforated plates have obliquely running holes.

5. The device as claimed in claim 1, wherein the perforated plates with a greater hardness are produced from reinforced steel.

6. The device as claimed in claim 1, wherein the perforated plates with a lower hardness are produced from aluminum.

7. The device as claimed in claim 1, wherein the perforated plates are fitted in an installation frame that is insertable into the opening.

8. The device as claimed in claim 1, wherein the perforated plates are arranged such that the holes in the perforated plates are offset relative to one another.

9. The device as claimed in claim 1, wherein the perforated plates are arranged such that the holes in the perforated plates are in the same position.

10. The device as claimed in claim 1, wherein the holes in the perforated plates are round.

11. The device as claimed in claim 1, wherein the holes in the perforated plates are polygonal.

12. The device as claimed in claim 1, wherein the perforated plates are arranged parallel to one another.

13. The device as claimed in claim 1, wherein the perforated plates are arranged layered via a receiver.

14. The device as claimed in claim 1, wherein the space is arranged in a vehicle.

15. The device as claimed in claim 1, wherein the device with the wall in which the opening is introduced runs in a plane.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0026] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein the sole FIGURE illustrates a perspective layout of the device according to an exemplary embodiment of the invention.

DETAILED DESCRIPTION

[0027] The FIGURE shows the device according to an exemplary embodiment of the invention for removing air from, or supplying air to, a space, wherein the space itself is not shown. The device comprises three perforated plates 1, 2, 3 for this purpose which are arranged in a frame 6. The perforated plates 1, 2, 3 are oriented parallel to one another and are fitted in the frame 6 in layers. The receivers 5 are provided to assemble the perforated plates 1, 2, 3. These ensure that the perforated plates 1, 2, 3 are mounted fixedly to one another.

[0028] The perforated plates 1, 2, 3 have holes 4. In FIG. 1 the holes 4 are distributed regularly and uniformly on the perforated plates 1, 2, 3 and ensure an adequate air flow for the ventilation system which connects the space to the device.

[0029] The holes 4 may be arranged obliquely or, as in the present exemplary FIGURE, perpendicularly. The possible air flow can be controlled through this possible arrangement and also the overlapping of the holes 4 relative to one another. Likewise, this arrangement means that the protection which results for the opening on account of the device is influenced. The device protects the opening from external impacts, in particular ballistic impact.

[0030] In order to achieve this protective effect, the perforated plates are made of different hardnesses, wherein the perforated plates 1, 3 exhibit the greater hardness compared with the perforated plate 2.

[0031] This sandwich-like structure means that in case of ballistic impact, fragments are firstly trapped between and/or in the individual perforated plates 1, 2, 3 and cannot reach the ventilation system or the space. Secondly, the soft material of the perforated plate 2 ensures that fragments deform the soft material and energy can thereby be absorbed from the fragments before they are able to have an impact on the ventilation system or the space.

[0032] The installation frame 6 in which the perforated plates 1, 2, 3 are arranged is fitted in the opening by simple assembly means. This may involve screw-fastening, welding, soldering or latching.

[0033] The present invention is not limited to the aforementioned features, but further embodiments are also conceivable. Hence, the perforated plates may also adopt any other shape apart from a rectangle, for example a circle or oval. In this way, the device can be adapted to the corresponding opening being protected. Other materials are also likewise conceivable for the perforated plates, such as high-grade steel and plastic, for example. The only thing that is important in this case is that the plates with the greater hardness are suitable for resisting external impacts, which is why hard metals have proved effective. On the other hand, the plate with the lower hardness must be suitable for being able to absorb energy, for example by deformation. Aluminum, plastics, but also rubber or laminated paper, can be used for this purpose.

[0034] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims: