GB2355736A

GB2355736A - Ventilation device

Info

Publication number: GB2355736A
Application number: GB0026493A
Authority: GB
Inventors: Luc Louis Renson
Original assignee: CVA ALUPROCO
Current assignee: CVA ALUPROCO
Priority date: 1999-10-29
Filing date: 2000-10-30
Publication date: 2001-05-02
Anticipated expiration: 2020-10-30
Also published as: NL1013431C2; GB0026493D0; GB2355736B

Abstract

A ventilation device for installation between the top wall of a frame 2 and the adjoining construction 5, 6, of a building comprises a housing having a bottom wall 11 that can be fitted on the frame, a top wall 12 that can be fitted to the construction 5,6, openings 50, 46 on the outside and inside respectively between which a ventilation passage extends, a flap 22 operable to open or close the ventilator, and stops 33, 28 on bottom wall 11, the outer stop 28 being adjustably fixed to the bottom wall of the housing. Stop 28 may have a serrated tongue 26 that slides into a channel 25 with serrated lower wall 23 so that outward movement is inhibited. Flap 22 pivots about 35 between the closed position shown and an open position in which hook 41 abuts stop 45.

Description

2355736 Vegtilation device for installaon between frame and wall The

invention relates to a ventilation device for installation between the top of a frame and the adjoining constraction of a building, comprising a housing having a bottom wall that can be fitted on the frame, a top wall that can be connected to an adjoining construction, an opening located on the outside and an opening located on the inside, between which openings a ventilation passage extends, as well as a flap by means of which the ventilation passage can be closed off, which bottom wall has stops located opposite one another, between which the top of the frame can be accommodated.

A ventilation device of this type is disclosed in EP-B 612 369. 11is known ventilation device is made up of a fairly large number of individual sections and plates which are fixed to one another by means of snap-fit conriections or clamp connections. It is true that the ventilation device can be adjusted to the width of the frame concerned by varying the width of the plates, but as a consequence of the numerous different components the cost price is fairly high.

Furthermore, the known ventilation device has a sliding flap by means of which it can be opened or closed. Partly as a consequence of the high positioning of the ventilation device, that is to say on top of the frame and consequently directly below the ceiting of the room to be ventilated, this flap provides a flow of air directed downwards after it has been opened. Such a flow of air is usually experienced as an unpleasant draught.

Ile aim of the invention is to provide a ventilation device of the abovementioned type which does not have these disadvantages. Said aim is achieved in that the outermost stop is adjustably fixed to the bottom wall of the housing.

By means of the adjustable stop on the outside, the ventuation device according to the invention can be directly adapted in a simple manner to the width of the frame. It is not necessary to saw off some components, such as plates, to the correct width, or to keep in stock a series of plates with predetermined, different widths; the adjustable stop can simply be slid along until it makes contact and the desired width of the ventilation device has been achieved.

The outermost stop is preferably constructed as a stop section which has a limb that is accommodated in a corresponding slot in the housing, and a stop edge that can be brought into seating interaction with the external surface of the frame, By means of such a section a robust and sealing join can be obtained over the entire length of the ventilation 2 device and the frame.

In order to fix the stop section in position once it has been adjusted, the limb of the stop section and the slat in the housing can have coupling means which allow the limb to be pushed into the slot and prevent movement in the opposite direction. The coupling means can comprise asymmetrically shaped teeth which interact with one another like a ratchet The desired sealing of the ventilation device with respect to the frame can be further improved if the stop edge has a flexible sealing lip, formed by means of co-extusion, which can be brought into sealing interaction with the external surface of the frame.

A further improvement of the invention relates to the functioning of the flap for closing or opening the ventilation device. This flap is a hinged flap, the hinge of which is located on the innermost stop.

Since the innermost stop extends downwards, the binge of the flap can be placed in a fairly low position. This low position offers the possibility of selecting the open position of the flap in such a way that the incoming strewn of air is guided upwards over the ceiling.

Since such a stream continues to flow along the ceiling for a certain distance it is barely noticed and is certainly not experienced as a draught Consequently a high degree of comfort can be achieved with the ventilation device according to the invention.

The innermost stop on the bottom wall has a bottom strip directed away from the top wall, a lowered wall portion that bears the hinge projecting at the outer edge of said strip, In a corresponding manner the top wall can now also have a top strip, pointing towards the bottom wall, which is located essentially opposite the innermost stop, a lowered wall portion, that defines the flap seat, projecting at the outer edge of said top strip.

The stepped progression of the bottom and top walls provides an outflow opening that is positioned relatively low, whilst the total surface area of the ventilation channel nevertheless still remains large enough for the required capacity. The finishing layer of the ceiling, which, for example, can consist of boards, on now continue into the recess which has been produced between the lowered wall portion of the top wall and said ceiling. If separate ceiling boards are not used, the recess can be filled with a further auxiliary section, which results in a smooth appearance of the inside of the ventilation device.

According to a preferred embodiment, the housing comprises two sections, the bottom section of which defines the bottorn wall and the top section the top wall.

3 Both sections have a partition that is directed towards the other section and is provided with passages, each of said partitions being fixed to said other section, The ventilation device according to the invention in this case has only four separate sections (including the adjustable stop an4 the flap), which results in a low cost price. The top section can optionally have a cover on the outside.

The flap can also support an insect grating. In particular, the flap can comprise a section, which section has a perforated flange.

The perforated flange can itself form the insect grating, but the flange can also support a separate insect grating that covers the perforations in the Range. Such a grating can easily be removed for cleaning.

Preferably, the flange is concentrically curved with respect to the hinge axis of the hinge, such that there is always one descriptive that essentially comes into contact with the top wall. In this embodiment the insect grating is effective in any open position of the flap.

Nevertheless, as an alternative, the flange can have a free end that comes into contact with the top lowered wall when the flap is in the fully open position.

The invention will be explained in more detail below with reference to an illustrative embodiment shown in the figures.

Figure 1 shows a cross-sectional yiew of the ventilation device according to the invention in the fitted position, the flap being closed.

Figure 2 shows a partial view of the ventilation device with the flap open.

Figure 3 shows a detail.

Figure 4 shows a variant.

The ventilation device I shown in Figure I has been fitted between a frwne 2 and the adjoining construction of a wall 3. Part of the cavity 4 of this wall is shown, with the adjoining ceiling 5 and the part of the external cladding 6, The cavity 4 is closed off by means of a strip 7.

The frame 2 comprises a plastic section 8, known per se, with a metal tube 9 accommodated therein.

The ventilation device I according to the invention comprises a bottom section 10, the bottom wall I I of which bears on the frame 2. The ventilation device I fiather comprises a top section 12, the top wall 13 of which is fixed to the ceiling 5 by means of bracket5l.

The bottom section 10 has an 4pright partition 14 with coarse perforation 15 and the 4 top section 12 has a partition 16 which extends downwards and likewise has a coarse perforation 15, Said perforations 15 leave a ventilation passage 17 free between the opening 50 located on the o-4tside and opening 46 of the ventilation device 1, which opening 46 is located on the inside.

Since the partitions 14, 16 project freely they are readily accessible with a punching tool and openings 15 can be punched therein without many problems.

The two partitions 14, 16 each have a moulded-on strip 18 at their ends, which strip 18 is pushed into and clamped in a correspondingly positioned foot 19 of each of the sections 10, 12. The sections 10, 12 fixed to one another in this way together define the housing 20 of the ventilation device 1, which housing 20 has a protective cover 21 on the outside and on the inside can be closed by means of the flap 22 to be described in more detail.

Me bottom section 10 has two parallel wall portions 23, 24, which enclose a slot 25 in which the limb 26 of the outermost stop, indicated in its entirety by 27, is slidably accommodated. Said outermost stop 27 furthermore has a stop edge 28 which has a moulded-on, flexible sealing strip 29.

As shown in the detail in Figure 3, both the limb 26 and the wall portions 23, 24 have asymmetric serrations 30, 3 1. These serrations allow the limb 26 to be pushed inwards into the slot 25 but block, or counteract, the opposite movement.

As shown in Figure 1, the outermost stop 27 can be pushed until it comes into contact with the extenial surface of the frame 2.

The bottom section 10 also has an innermost stop, indicated in its entirety by 32, which has a downward-pointing strip 33 to which a lowered wall portion 34 of the bottom wall I I is fixed, This lowered edge portion 34 bears the hinge 35 of the flap body 36 of the flap 22.

Correspondingly, the top wall 20 of the top section 12 has a strip 37 to which a lowered wall portion 38 is attached. This lowered wall portion 38 forms the flap seat for the flap body 36. The two strips 33, 37 and the lowered wall portions 34, 38 form a ventilation passage diverted downwards, the capacity of which must be adequate for ventilation of the area behind it As a consequence of Us lowering in the ventilation passage, the hinge 35 of the flap 22 can be positioned so low that when the flap is in the open position it guides the air stream upwards, in the direction of the ceiling 5, as shown in Figpre 2. The advantage of this embodiment is that the incoming air is not experienced as a troublesome draught, which is beneficW for comfort.

An infill. section 51 can be fitted above the lowered waR portion 38 if the space concerned is not used. A finishing strip 52, ceiling board and walls can be fitted in contact with said infill section 51. As an alternative, the ceiling board can also be pushed directly into said space above the wall portion 3 8.

According to the invention, a flange 39, which forms the insect grating with passages 40, can have been formed on the flap body 36 of the flap 22. When the flap is in the open position the free edge 41 of Us flange 39 is in contact with the ridge 45 on the lowered wall portion 38 of the top section 12 in such a way that insects are effectively held back when the flap is in the f4lly open position.

The free edge 41 and the ridge 45 each have a hook so that the fully open position of the flap 22 is clearly defina In connection with the removal of the flap, the flange 39 can be pressed downwards, such that the hooks move over one another and the flap 22 can be lifted out of the hinge.

The flap body 36 also has a ridge 42 by which the flap can be gripped and opened and closed, The flap body 36 also has a locking component 43 that can be made to interact with the locking component 44 of the bottom section 11, such that the flap can be held in its closed position.

In the variant in Figure 4 the flap 49 is provided with a partially curved flange 48 which is closely adjacent to the ridge 45 in every position of the flap 49, The origin of the associated radius of curvature is in the hinge 35. In this way it is always ensured that insects are effectively kept out.

Claims

6 Claims

1. Ventilation device (1) for installation between the top of a frame (2) and the adjoining construction (3) of a building, comprising a housing (20) having a bottom wall (11) that can be fitted on the frame (2), a top wall (13) that can be connected to an adjoining construction (3), an opening (50) located on the outside and an opening (46) located on the inside, between which openings (46, 50) a ventilation passage (17) extends, as well as a flap (22) by means of which the ventilation passage (17) can be closed off, which bottom wall (11) has stops (27, 3 2) located opposite one another, between which the top of the frame (2) can be accommodated, ebaracterised in that the outermost stop (27) is adjustably fixed to the bottom wall (11) of the housing (20).

2. Ventilation device according to Claim 1, wherein the bottom stop (27) comprises a stop section which has a limb (26) that is accommodated in a corresponding slot (2S) in the 15housing (20), and a stop edge (28, 29) that can be brought into sealing interaction with the external surface of the frame (2).

3. Ventilation device according to Claim 2, wherein the limb (26) of the stop section (27) and the slot (25) in the housing (20) comprise coupling means (30, 31) which allow the limb (26) to be pushed into the slot (25) and attempt to prevent movement in the opposite direction.

4. Ventilation device according to Claim 3, wherein the coupling means comprise syrnrnetrically or asymmetrically shaped teeth (30, 3 1) which interact with one another like a ratchet.

5. Ventilation device according to Claim 2, 3 or 4, wherein the stop edge (28) has a flexible sealing lip (29), formed by means of co-extrusion, which can be brought into sealing interaction with the external surface of the fi-ame (2).

6. Ventilation device according to one of the preceding claims, wherein the flap (22) is a hinged flap, the hinge (35) of which is located on the innermost stop (32).

7 7. Ventilation device according to Claim 6, wherein the innermost stop (32) on the bottom wall (11) has a bottom strip (3 3) directed away from the top wall (13), a lowered wall portion (34) that bears the hinge (35) projecting at the outer edge of said strip.

8. Ventilation device according to Claim 7, wherein the top wall (13) has a top strip (37), pointing towards the bottom wall (11), which is located essentially opposite the, innermost stop (32), a lowered wall portion (38), that defines the flap seat, projecting at the outer edge of said top strip (37),

9. Ventilation device according to one of the preceding claims, wherein the housing (20) comprises two sections (10, 12), the bottom section (10) of which defines the bottom wall (11) and the top section (12) the top wall (13).

10, Ventilation device according to Claim 9, wherein both sections (10, 12) have a 15 partition (14, 16) that is directed towards the other section and is provided with passages (15) and each partition (14, 16) is fixed to said other section (10, 12).

11. Ventilation device according to Claim 10, wherein the passages (15) in at least one of the partitions (14, 16) gre covered by a gating.

12. Ventilation device according to Claim 10 or 11, wherein the top section (12) has a cover (21) on the oi4tside.

13. Ventilation device according to one of the preceding claims, wherein the flap (22) 25 supports an insect grating (40),

14. Ventilation device according to Claim 13, wherein the flap comprises a section that has a perforated flange (39).

15. Ventilation device according to Claim 14, wherein the perforated flange (39) forms an insect grating.

16. Ventilation device according to Claim 14, wherein the flange supports a separate 8 strip, wl-dch may or may not be perforated, which covers the perforations in the flange.

17, Ventilation device according to one of Claims 13 - 16, wherein the flange (49) is concentrically curved with respect to the hinge axis of the hinge and by means of one descriptive is always essentially in contact with the top wall (13) or a ridge (45) present thereon.

18, Ventilation device according to one of Claims 13 - 16, wherein the flange (39) has a free end (4 1) that comes into contact with the top lowered wall (3 8), or a ridge (45) present thereon, when the flap is in the fully open position.

19. Ventilation device according to one of the preceding claims, wherein all sections (10, 12, 27, 36) are made of a plastic, such as PVC, or a metal.

20. A ventilation device substantially as herein described with reference to the accompanying drawings.