GB2116694A

GB2116694A - Ventilators

Info

Publication number: GB2116694A
Application number: GB08306634A
Authority: GB
Inventors: Eckhard Kucharczyk
Original assignee: Siegenia Frank KG
Current assignee: Siegenia Aubi KG
Priority date: 1982-03-11
Filing date: 1983-03-10
Publication date: 1983-09-28
Also published as: ATA65183A; GB8306634D0; FR2523200A1; AT391550B; GB2116694B; DE8206788U1; CH658900A5; FR2523200B1

Abstract

A ventilator (1) is adapted to fit an opening in a window, door and/or any suitable opening in a wall of a building, the ventilator comprising a casing (2) that has an outer long wall (7), an inner long wall (3), a base (4), a top (5) and two end walls (45, not shown). The outer wall and inner wall are formed with air passage openings (19, 28), and a weather strip (6) which has air passages (30) formed therein is associated with the outer air passage opening. The section member which forms the outer long wall has edge webs (9) to which the weather strip (6) can be connected by way of retaining means (10, 11), the weather strip having bearing webs (36', 36'') on its longitudinal edges which extend rearwardly relative to a coupling plane that contains the retaining means and the edge webs of the outer long wall, the bearing webs terminating at abutment surfaces (37, 38) that are adapted to abut wall, frame and/or glass surfaces. <IMAGE>

Description

SPECIFICATION Improvements in or relating to a ventilator The invention relates to a ventilator adapted to fit in a opening in a window, door and/or any available opening in a wall of a building.

Examples of prior art ventilators are described in German Offenlegungsschrift 2919682 and in German Utility Model 8 026 006.

Such prior art ventilators combined the advantages of an inobtrusive construction and relative compactness with reasonable sound insulation and outstanding heat insulation, even though the casing enclosing the air flow passages is made mainly of metal - i.e., a material which is a relatively good heat conductor. Yet another advantage of these known ventilators is that the ventilator is easy to install and once installed can readily be operated, serviced and cleaned from inside the room.

However, such known ventilators suffer from disadvantages when the casing has to be so fitted as to project outside of the opening in the wall or window, in that it has been found to be difficult to secure the casing in such instances.

In addition a disadvantage of ventilators whose casing top and base are made of metal is that relatively large metal surfaces are exposed to the external atmosphere, so that unwanted cold bridges extending to the building interior are formed, with the inevitable result of condensation and possibly frost and ice formation on the casing parts inside the building.

It is an object of the invention at least to mitigate these disadvantages.

Thus, the present invention provides a ventilator adapted to fit an opening in a window, door and/or any suitable opening in a wall of a building, the ventilator comprising a casing that has an outer long wall, an inner long wall, a base, a top and two end walls; the outer wall and innerwall being formed with air passage openings; and a weather strip which has air passages formed therein and is associated with the outer air passage opening, a section member which forms the outer long wall having edge webs to which the weather strip can be connected by way of retaining means, the weather strip having bearing webs on its longitudinal edges which extend rearwardly relative to a coupling plane that contains the retaining means and the edge webs of the outer long wall, the bearing webs terminating at abutment surfaces that are adapted to abut the wall, frame and/or glass surfaces.

In this arrangement the bearing webs form a kind of collar which extends from the weather strip, around the heat-insulating outer long wall and the adjoining heat-conductive zones of the casing top and casing base and act as a support and heatinsulating member.

Advantageously, the bearing webs extend at least in zones at an inclination to the horizontal and co-operate with the weather strip to define a sustantially trapezoidal outer contour.

The abutment surfaces of the bearing webs may be formed with longitudinal grooves that are adapted to receive sealing elements and may be spaced apart laterally from the top and base of the casing such that when the ventilator is mounted in an opening in a window, door or the like, a hollow chamber is enclosed by the bearing webs, the outer long wall and the base and top of the casing towards the surfaces of the wall, frame and/or glass of the window, door or the like.

To enable a static and therefore heat-insulating air cushion to form in the hollow chamber, each end of the hollow chamber may be closed off by a resilient cap.

According to another feature of the invention, the abutment surfaces of the bearing webs may be disposed on different abutment planes relative to the depth of the casing, so that they can be brought into contact, for instance, with the outside surface of a window frame on the one hand and with the outside surface of the window pane on the other.

In orderthatthe invention may be more readily understood and so that further features thereof may be appreciated, embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a vertical section through a first embodiment of a ventilator according to the invention; and Figure 2 is a vertical section through a second embodiment of a ventilator according to the invention.

Referring to the drawings, Figure 1 shows a ventilator 1 that is adapted to be fitted into an opening in the wall of a building, more particularly to be disposed between the frame of a window or door and its surrounds. The ventilator 1 has a casing 2 which is positioned to extend parallel to the plane of the wall. The casing 2 has an inner long wall 3, a base 4 and a top 5 and is bounded on its outer long side by a weather strip 6. An outer long wall 7 is disposed between the weather strip 6 and the base 4 and top 5. As can best be seen in Figure 2, two end walls 45, that have a contour corresponding to the casing cross-section, are provided to close the ends of the casing.

The inner wall 3, base 4, top 5 and weather strip 6 are metal sections, more particularly light metal extruded sections, whereas the outer long wall 7, and the end walls 45 are made of a heat-insulating but dimensionally stable material, more particularly a plastics material. The outer long wall 7, is in the form of an extruded plastics section, and can readily be cut to any required length, whereas the two plastics end walls 45 are injection mouldings and therefore matched exactly to the cross-section of the casing 2.

The outer long wall 7 extends over the whole length of the casing 2 and has two edge webs 8 which extend perpendicularly to the casing plane to form outwardly extending flanges 9 and which are such that the wall 7 and webs 8 together make up a substantially shaped cross-section. The weather strip 6 is connected by the outwardly directed flanges 9 of the webs 8 to the wall 7, a cut-back longitudinal bead 10 of each flange 9 being pushed or snap fitted into a matching cut-back longitudinal groove 11 in the weather strip 6.

The casing base 4 and casing top 5 are connected by way of the inwardly directed flanges 12 of the webs 8 to the wall 7. To facilitate this, the flanges 12 have cut-back longitudinal beads 13 engageable axially in matching cut-back longitudinal grooves 14 of the casing base 4 and casing top 5.

A section member in the form of a slider 15, that is also made of a dimensionally stable plastics material, is disposed between the two inwardly directed flanges 12 of the edge webs 8. The edges of the slider 15 are formed with longitudinal grooves 16 which are adapted guidably to engage longitudinal members 17 that are formed on inner sides of the flanges 12; the slider 15 is formed with on or more apertures 18 which can selectively be brought into registration with corresponding apertures 19 in the wall 7 of moved laterally out of registration with the apertures 19.

Air flow passages 20 are formed with the casing 2 between the slider 15, the inner long wall 3 and the casing base 4 and casing top 5; the passages 20 extend lengthwise of the casing 2 and are bounded by a substantially U-section moulding 21 and a plate-like moulding 22. The two mouldings 21,22 are made of a sound-insulating substance such as a foam plastics material; the moulding 21 is formed with air passage apertures, indicated at 23, which are in permanent registration with the air passage apertures 19 in the outer long wall 7 and which can be opened or closed by appropriate adjustment of the slider 15. The moulding 22 is formed with air passage apertures 24 so offset from the apertures 23 in the moulding 21 that the air passage 20 is confined to follow a lengthwise pathway over relatively long distances.The apertures 24 are in flow communication with a chamber 25 disposed in the casing 2 behind the inner long wall 3 and a baffle plate 27, that is secured in chamber 25 by way of suitable clips 26 and is disposed at a distance before air flow apertures 28 formed in the inner long wall 3 of the casing 2.

A chamber 29 is formed between the weather strip 6 and the outer wall 7 and communicates, by way of air passages 30 in the weather strip 6, with the outside atmosphere. In the embodiment of Figure 1 the passages 30 are in the form of longitudinal slots punched out of a front plate 31 of the weather strip 6, the material punched out of the plate 31 being shaped to form scoops 32 that extend downwardly over the passages 30 to screen the same.

In the embodiment illustrated in Figure 2 the passages 30 are also in the form of punched-out longitudinal slots, but in this case the passages 30 are disposed in the end plate 31 above projections 33 over which integrally formed downwardly extending flanges 34 of section members 35 extend. The shape of the members 35 in combination with the projections 33 and flanges 34 ensures that moisture and rainwater cannot penetrate into the chamber 29 even in strong winds.

Referring now to both Figure 1 and Figure 2, a pair of flange-like bearing webs 36', 36" are so formed on the longitudinal edges of the weather strip 6 as to extend from the weather strip 6 rearwardly to a plane which includes the grooves 11 of the strip 6 and the beads 10 of the wall 7, as can be clearly seen in Figures 1 and 2. The top web 3-6' has along its free end an abutment suface 37 that is adapted to abut the outside surface of a wall or a frame, whereas the bottom web 36" has an abutment suface 38 that is adapted to abut a panel element, such as a glass pane or a door panel. A longitudinal groove 39 in the abutment surface 37 and a longitudinal groove 40 in the abutment surface 38 can be used to receive sealing elements where required.

As can also be gathered from Figures 1 and 2, the webs 36', 36" extend at least in zones at an inclination to the horizontal and co-operate with the strip 6 to form a substantially trapezoidal outside contour. As will also be apparent, the abutment surfaces 37,38 of the webs 36', 36" are each spaced apart laterally from the casing top 5 and casing base 4. The webs 36', 36", the abutment surfaces 37, 38, the outer long wall 7 and the casing base 4 and top 5 co-operate to form chambers adjacent the wall or frame or glass surfaces. These chambers are preferably closed, by caps 41,42 adapted to be pushed on at both ends and made, for instance, of a resilient substance, and thus bound a static air buffer or cushion. The latter chambers can of course be given a heat-insulating infill, for example by filling with a plastics foam.The webs 36', 36" are formed to protect the exposed parts of the metal casing base 4 and metal casing top 5 from contact with the external atmosphere and thus inhibit the formation of cold bridges to the inside of the building.

When fitting the ventilators 1 in elements comprising a frame with panels therein, it is important for the abutment surfaces 37,38 of the webs 36' and 36" to be disposed in different abutment planes in relation to casing depth, to ensure that in such cases the ouwardly projecting metal parts of the casing are provided with heat insulation.

The casing 2 of the ventilator 1 is secured to internal surfaces of the wall or frame and/or panels or glass panes by way of pressing strips 44 adapted to snap into suitable section members 43 formed on or screwed to the casing 2. In Figures 1 and 2 a corresponding arrangement is shown in the fitting zone for insulated glazing.

The invention has been found to provide a ventilator which, even when so intalled that the casing projects to some extent out of the wall opening can be reliably secured and obviates the formation of unwanted cold bridges.

Claims

1. A ventilator adapted to fit an opening in a window, door and/or any suitable opening in a wall of a building, the ventilator comprising a casing that has an outer long wall, an inner long wall, a base, a top and two end walls; the outer wall and inner wall being formed with air passage openings; and a weather strip which has air passages formed therein and is associated with the outer air passage opening, a section member which forms the outer long wall having edge webs to which the weather strip can be connected by way of retaining means, the weather strip having bearing webs on its longitudinal edges which extend rearwardly relative to a coupling plane that contains the retaining means and the edge webs of the outer long wall, the bearing webs terminating at abutment surfaces that are adapted to abut the wall, frame and/or glass surfaces.

2. A ventilator according to claim 1, wherein the bearing webs extend at least in zones at an inclination to the horizontal and co-operate with the weather strip to define a substantially trapezoidal outer contour.

3. A ventilator according to claim 1 or claim 2, wherein the abutment surfaces of the bearing webs are formed with longitudinal grooves that are adapted to receive sealing elements.

4. A ventilator according to claim 1, claim 2 or claim 3, wherein the abutment surfaces of the bearing webs are spaced apart laterally from the top and base of the casing such that when the ventilator is mounted in an opening in a window, door or the like, a hollow chamber is enclosed by the bearing webs, the outer long wall and the base and top of the casing towards the surfaces of the wall, frame and/or glass of the window, door or the like.

5. A ventilator according to claim 4, wherein each end of the hollow chamber is closed off by a resilient cap.

6. A ventilator according to claim 4 or claim 5, wherein said hollow chamber is filled with a heat insulating material.

7. A ventilator according to any of claims 1 to 6, wherein the abutment surfaces of the bearing webs are disposed on different abutment planes relative to the depth of the casing.

8. A ventilator according to any of claims 1 to 7, wherein the air passages in the weather strip are in the form of slots in an end plate of the weather strip over which scoops stamped out of end plate extend.

9. A ventilator according to any of claims 1 to 7, wherein the air passages in the weather strip are in the form of slots disposed in an end plate of the weather strip in zones over which shaped section elements extend.

10. A ventilator according to any one of claims 1 to 9, wherein at least said outer long wall is formed from a laminate made of dimensionally stable material.

11. A ventilator according to any one of claims 1 to 10, further incorporating a closure device, at least the outer long wall being formed from a dimensionally stable material which is a poor heat conductor, the outer long wall having guides for receiving the closure device that is also made of a dimensionally stable material.

12. A ventilator according to claim 11,wherein said closure means is in the form of a slider or the like.

13. Aventilatorsubstantially as herein described, with reference to, and as shown in, Figure 1 of the accompanying drawings.

14. A ventilator substantially as herein described with reference to, and as shown in Figure 2 of the accompanying drawings.

15. Any novel feature or combination of features disclosed herein.