EP2634501B1 - Ventilation device, in particular for buildings - Google Patents

Description

The invention relates to a ventilation device which is used in particular in the building sector.

Ventilation devices are used in buildings to allow the exchange of room air with fresh air. Typically, a wall box is inserted into a wall to establish a connection between the interior and the exterior of a building. The wall box is completed in the sequence by a preferably flush with the outer wall subsequent venting device, which allows the exchange of air and fulfills other functions. Wall boxes are provided, for example, in the kitchen to convey the exhaust air collected from an extractor hood from the range of the cooker to the outside, or to supply fresh air from the outside. Venting devices are also commonly used in public buildings as well as commercial and industrial buildings or installations. For example, in railway construction, it is often necessary to remove air from tunnel systems and replace it with fresh air. In electrical systems, electrical machines that are located within buildings or larger enclosures, often fresh air supplied to dissipate heat loss.

In addition to the described basic functions of the venting devices other functions are to be met individually or in combination.

The venting device should allow the exchange of air as unhindered as possible and at the same time prevent rainwater or snow from entering the associated building.

From [1], DE2625575A1 , is the below in FIG. 1 Ventilation device for building known, which comprises a housing with at least one channel for a passage of exhaust air. The channel has an air inlet opening and an opposite air outlet opening and laterally delimiting, mutually parallel channel wall segments and flat channel end walls, which at the same time form the longitudinal walls of the housing. The channel wall segments, which consist of two interconnected profile limbs, have a V-shaped basic shape with an angle peak which extends approximately at half the channel height and with respect to the base edges of the profile legs at least the clear width of the air inlet and the air outlet opening of each channel in the transverse direction is offset. As a result of this dimensioning of the channel wall segments, air can not pass directly through the channel, but passes through the V-shaped channel, thereby losing rainwater entrained. When there is strong air flow, however, it is likely that some of the rainwater can pass through the channel if it is not long enough.

Another disadvantage is the complex construction of this ventilation device, wherein the channel wall segments composed of two profile parts and are inserted into the housing. In order to achieve the desired effect, correspondingly large dimensions of this venting device are required.

Furthermore, since the channel openings are open, protective grids are required which prevent objects from being introduced into the channels, which could obstruct the function of the ventilation device or even get into the space to be ventilated.

Overall, thus result in a high space requirement and a high production cost for this venting device.

From [2], DE2653056A1 , a ventilation device for buildings with a high security requirement is known. The ventilation device comprises a frame formed of plates, which can be fixed in a respective air passage into which at least two perforated plate or net-like transverse walls are drawn with approximately parallel distance from each other, which laterally delimit at least two rows of horizontally superimposed cross members attached to the frame sides and those on the outside in superposition also attached to the frame sides, transversely directed, oppositely inclined steel plates are upstream.

These venting device is designed extremely complex. Furthermore, even with this device, it is possible for vandals to push objects between the slats into the interior of the building.

In the event of damage, the devices described above can be maintained and repaired only with considerable effort. If some of the duct wall segments or fins are damaged, it is to be expected that the entire ventilation device must be replaced.

Further, it should be noted that venting devices are typically exposed to weathering and environmental factors, and because of the complexity of the devices, there are numerous attack surfaces for corresponding damage, such as oxidation and contamination, and corresponding maintenance expenditures are therefore required.

Due to the complexity of the known ventilation devices, these are in fixed sizes produced and can be delivered only with considerable expenditure and appropriate costs with dimensions, which are desired by the users individually.

The DE19727438C1 discloses a built-in fan element with an insertable into a building wall mounting frame and U-shaped inner and outer plates, which are horizontally aligned and fixedly disposed on two guide frames which are relative to each other and relative to the surrounding mounting frame between two functional positions movable. Water that drips from higher-lying inner and outer plates, gets in this device in each case in the air flow, which is guided between deeper inner and outer fins, which is why moisture in this device can get into the interior of the building. Furthermore, in this device, the inner and outer disks are produced individually and connect to the guide frame, which is associated with considerable effort.

The CH507483A discloses a weather vent for ventilation openings, which has a cover plate which is manufactured in one piece from an extruded profile. The process of extruding and reworking the extruded profile require appropriate facilities and tools and cause a corresponding expense.

The present invention is therefore based on the object to provide an improved ventilation device.

The venting device should only take up little space and cost-effectively with dimensions to be produced, which are selected by the user individually.

In particular, the venting device should provide increased protection against the passage of rainwater and against manipulation of vandals.

Furthermore, the ventilation device should be installable with little effort or repaired or serviced in the event of damage even with little effort and cost of materials.

Furthermore, the ventilation device should be customizable with little additional effort to individual aesthetic and qualitative requirements.

This object is achieved with a ventilation device having the features specified in claim 1. Advantageous embodiments of the invention are specified in further claims.

The ventilation device, which can be advantageously installed in a partition wall of a building or in machinery and installations, comprises at least one channel which extends from at least one inner channel opening to at least one outer channel opening so that no direct connection between the inner and the outer channel opening results ,

The processing of the mounting plates is done by bending and / or cutting operations that can be performed quickly by machine. By appropriate programming and design of the tools plates can be processed with almost any size and provided with channel openings or channel wall segments of any size and shape. Using laser technology, the mounting plates are particularly easy to customize. If high safety requirements for the building are given, metal plates with the appropriate material thickness are selected. A desired quality of the ventilation device can Furthermore, be easily achieved by appropriate choice of material and nature of the mounting plates.

The channel wall segments, which are not continuous from the inside to the outside channel opening, direct the airflow and trap heavier parts within the airflow, such as water and solids. In this way, an improved effect can be achieved compared to known venting devices with less material, since material is only used where it is necessary to catch the water and the solids. At the same time, smaller dimensions result.

The venting device can be optimized so that the lowest possible resistance to passage of air or a maximum removal of water and moisture results. However, it is particularly advantageous in the solution according to the invention that both functions are well fulfilled even in the elementary embodiments.

In preferred embodiments, two provided mounting plates can be thermally insulated from each other so that they can have different temperatures. The heat of the exhaust air can therefore be detected by the inner mounting plate and returned. In particularly preferred embodiments, a ventilation device for the supply of fresh air and a ventilation device for the removal of the exhaust air is used. The thermal connection of the mutually corresponding mounting plates of the two venting devices, a heat exchanger is provided which detects the heat energy of the exhaust air and impresses in the fresh air flow. If, as described below, filter elements are used, then multi-stage filters can be realized. The one with Mounting plate connected filters each form a filter stage.

With a few machine operations, not only the channel wall segments provided for forming the channels but also other functional elements can be manufactured. Particularly simple additional flange elements can be provided on the two mounting plates, which form after bending against each other by 90 ° a common frame structure. This frame structure and the mutually parallel parts of the mounting plates form a housing which can be assembled with little effort. From the mounting plates further provided with mounting holes flange elements can be cut out, which can be attached by means of mounting screws to a mounting body, for example a wall, a wall box, a machine housing or another installation body.

By simple shaping of the channel wall segments can be realized in both variants of the venting device, an advantageous course of the channels. For example, an S-shaped extending channel can be realized, through which the air from the inner channel opening is guided against the outer mounting plate and back to the inner mounting plate and only then to the outer channel opening. In this way it is possible to reliably detect and remove rainwater and snow by means of the channel wall segments. Due to the internal channel opening entering rainwater is therefore collected after entering the housing already in a channel wall segment on the opposite mounting plate. Any residual rainwater remaining in the air stream is returned to the inner mounting plate and collected there at the latest. The Channel wall segments are preferably oriented vertically, so that the collected water is discharged directly downwards. If the channel wall segments are aligned horizontally or horizontally inclined, the water is discharged to the side.

The surfaces of the mutually facing sides of the two mounting plates are preferably structured such that liquid or objects impinge on obstacles and are held. For example, mounting plates are used, which have on at least one side ribs or parallel edges, which prevent a laminar flow of solids and water droplets and thereby remove the solids and water droplets from the air stream.

Particularly easily, the front-side zones of the channel wall segments can also be provided with filter openings, such as slots, holes or the like. These front-side zones may be bent separately from the remainder of the channel wall segments to form a filter zone interconnecting opposing channel wall segments of the two metal plates. In this way, solids can be detected and liquids swirled and caught. The filter function can thus be realized practically without additional effort by appropriate processing of the front sides of the channel wall segments.

The filter function can be realized in a particularly simple manner if the wing elements of the channel wall segments are connected to one another and provided with perforations.

The filter openings and perforation are preferably designed such that air, but not solids and liquid, can happen. For example, drill holes and / or slots formed in the metal plate to realize the perforation. Preferably, openings are made not perpendicular but inclined in the metal plate, so that the air is deflected at one edge and separated from water or solids.

To realize the described functions, in particular the filter function, the channel wall segments are designed accordingly. In this case, channel wall segments can be provided which form a symmetrical or asymmetrical V or U profile. Further, an elongated and, for example, apertured, front piece of a wing member may be bent so as to contact an opposite channel wall segment. In this case, the air flow must pass through the openings in the front piece of the wing element and is thereby filtered and freed of solids or liquid.

By appropriate design of the flange of the wing elements and a turbulence of the air flow can be effected, whereby liquid is excreted locally and not transported.

Due to the simple construction of the venting device, in which the channel wall segments and the front sides of the mounting plates form a unit result in further significant advantages.

It is not only significant that the channel wall segments are not to be mounted separately, but that corresponding mounting material is eliminated, which would inevitably weather and make maintenance difficult. For maintenance of the ventilation device in the second variant, the two mounting plates are detached from each other. Subsequently, the maintenance personnel have free access to the channel wall segments Both mounting plates and can rid them of foreign matter. In this regard, it may be advantageous that only one of the mounting plates is connected to an installation body. As a result, only the outer mounting plate must be solved in order to carry out the maintenance work.

It is also particularly advantageous that the unprocessed mounting plates can be designed aesthetically at least on one side with minimal effort, so that automatically results in a desired appearance after editing the mounting plates.

The mounting plates can also be provided with a finishing layer, which protects the mounting plates and makes aesthetically beneficial appearance. For example, cold-rolled sheet metal is used which, for example, is protected against corrosion by the "Zenzimir" method with zinc.

The inventive ventilation device may advantageously be composed of two identical or only slightly different mounting plates. This reduces the production costs considerably.

Fig. 1

die eingangs beschriebene Entlüftungsvorrichtung 1000, die aus [1], DE2625575A1 , bekannt ist;

Fig. 2

in einer Schnittdarstellung eine erfindungsgemässe Entlüftungsvorrichtung 1, die eine innenliegende und eine aussenliegende Montageplatte 11 bzw. 12 umfasst, aus denen Kanalwandsegmente 111, 121 ausgeschnitten sind;

Fig. 3

die aussenliegende Montageplatte 12 nach teilweiser Bearbeitung;

Fig. 4

eine Entlüftungsvorrichtung 1, die nicht Teil der Erfindung ist, und die aus nur einer Montageplatte besteht, in die die Kanalwandsegmente 111, 121 der Ausgestaltung von Figur 2 eingearbeitet sind;

Fig. 5

die Entlüftungsvorrichtung 1 von Figur 4 in dreidimensionaler Darstellung;

Fig. 6

die Entlüftungsvorrichtung 1 von Figur 4 in einer prinzipiellen Darstellung;

Fig. 7

die Entlüftungsvorrichtung 1 von Figur 4 in einer modifizierten Darstellung;

Fig. 8

die beiden Montageplatten 11, 12 von Figur 2 mit Filterelementen 6, welche die benachbarten Frontseiten 1111 von Kanalwandsegmenten 111 miteinander verbinden; und

Fig. 9

die Entlüftungsvorrichtung 1 von Figur 2, welche die beiden bearbeiteten Montageplatten 11, 12 umfasst.

The invention will be explained in more detail with reference to drawings. Showing:

Fig. 1

the ventilation device 1000 described at the outset, which is known from [1], DE2625575A1 , is known;

Fig. 2

in a sectional view of an inventive venting device 1, which comprises an inner and an outer mounting plate 11 and 12, from which channel wall segments 111, 121 are cut out;

Fig. 3

the outer mounting plate 12 after partial processing;

Fig. 4

a ventilation device 1, which is not part of the invention, and which consists of only one mounting plate into which the channel wall segments 111, 121 of the embodiment of FIG. 2 are incorporated;

Fig. 5

the venting device 1 of FIG. 4 in three-dimensional representation;

Fig. 6

the venting device 1 of FIG. 4 in a schematic representation;

Fig. 7

the venting device 1 of FIG. 4 in a modified representation;

Fig. 8

the two mounting plates 11, 12 of FIG. 2 with filter elements 6 interconnecting the adjacent front sides 1111 of channel wall segments 111; and

Fig. 9

the venting device 1 of FIG. 2 which comprises the two machined mounting plates 11, 12.

FIG. 1 shows a sectional view of [1], DE2625575A1 known venting device 1000, which includes a housing with multiple channels through which fresh air entering a building or exhaust air can be removed therefrom. Each channel has an air inlet opening and an opposite air outlet opening and laterally delimiting, mutually parallel channel wall segments 1010 and flat channel end walls 1023, 1024, which also form the longitudinal walls of the housing. The channel wall segments 1010, which consist of two interconnected profile legs 1011, 1012, have a V-shaped Basic form with an angle vertex, which extends approximately at half the channel height and offset from the base edges of the profile legs 1011, 1012 by at least the clear width of the air inlet and the air outlet opening of each channel in the transverse direction. As a result of this dimensioning of the channel wall segments, air can not pass directly through the channel, but passes through the V-shaped channel, thereby losing rainwater entrained. This venting device is composed of several parts, which take up a relatively large amount of space. As mentioned above, the channel openings should be closed by an additional grid, so that no objects can be introduced into the channels.

FIG. 2 shows a venting device 1 according to the invention, which consists only of two mounting plates 11, 12, which have been processed according to the invention and can be connected by screws. The two practically identical mounting plates 11 and 12 each have five channel openings 110 and 120, which were created by cutting and bending channel wall segments 111 and 121, respectively.

The channel wall segments 111 and 121 are cut out of the mounting plates 11 and 12 in such a way that a respective back element 1110 remains, which has on each side a wing element 1111 or 1211, which is bent against the adjacent mounting plate 12 or 11. The wing elements 1111 and 1211 cut out of the mounting plate 11 and 12 are thus opened in the manner of a window, whereby the window or channel openings 110 and 120 are exposed.

In the present embodiment, four channel wall segments 11 and 12 are each provided, each having a back element 1110 or 1210 and two wing elements 1111th bzw.1211 and thereby form a V-profile. In addition, each additional wing element 112 or 122 is provided, which forms an additional channel wall segment. Each two adjacent wing elements 1111 of two V-shaped channel wall segments 111 of the inner mounting plate 11 each engage in an opposite V-shaped channel wall segment 121 and vice versa. The wing elements 1111 and 1211 therefore partially overlap, which is why S-shaped symmetrical channels K result.

The air flows for both sides are indicated by arrows. It can be seen that the air flow emerging from the building of the inner channel opening 110 along the outer sides of two adjacent wing elements 1111 of the inner mounting plate 11 penetrates into the venting device 1 and first between the wing members 1211 of an opposite V-shaped channel wall segment 121 of the outer mounting plate 12th to be led. There, the air flow is guided in two parts further along the inner sides of the same wing elements 1111 in the associated V-shaped channel wall segments 111 of the inner mounting plate 11 and only passes from there between two adjacent wing elements 1211 of the outer mounting plate 12 through to the outer channel opening 120th Die Weg des Air flow from the outside to the inside of the venting device 1 is analogous. While the air leaving the building is normally dry, the incoming air is humid and wet when the weather is appropriate. However, the entering through the outer channel opening 120 in the outer mounting plate 12 water is always detected by the channel opening 120 opposite channel wall segment 111, collected and discharged down. Water remaining in the air stream is returned to the outer mounting plate 12 in adjacent V-shaped Channel wall segments 121 out and there again recorded, collected and discharged down. The dewatered air flow is then routed back to inner channel openings 110 of the inner mounting plate 11. Even with strong air currents entrained water is always guided along continuous channel wall segments 111, 121 and trapped within the housing. That is, wet air would continue along the channel wall segment 121 into the next opposite channel wall segment 111 and not to the inner channel opening 110. Dried air, however, can pass through the housing largely unhindered after an S-shaped course, so that the main function of the ventilation device 1, namely the transfer of air, is optimally fulfilled. Schematically, it is shown that an airflow LN filled with rainwater is converted into two dry air flows LT1, LT2, which can be led into the building as fresh air, for example through a wall box.

In order to further improve the function of removing liquids from the air stream, the surfaces of the mutually facing sides of the two mounting plates 11, 12 are preferably structured such that liquid or objects impinge on obstacles and are held. For example, mounting plates 11, 12 are used, which on at least one side ribs, corners or eg parallel edges 150 (in FIG. 2 shown by way of example).

In FIG. 2 two of the opposing channel wall segments 111, 121 are shown in three-dimensional representation. The channel wall segments 111, 121, 112, 122 are cut approximately in the middle. The view on the other side shows a mirror image. The channel wall segments 111, 121 are therefore connected on both sides in one piece with the mounting plate 11 and 12 and completely framed by this and kept stable.

In a further preferred embodiment, however, it can be provided that the channel wall segments 111, 121 are held only on one side and form comb fingers in the manner which are held on one side by a frame element of the mounting plate 11 or 12, which forms a comb back. This embodiment is chosen, for example, when thicker mounting plates 11 and 12 are used, which can keep the channel wall segments 111, 121 stable. The comb backs can be opposite each other or arranged in opposite directions. A ventilation device 1 according to the invention can thus also form an independent partition wall, which protect passers-by, for example, in the area of a portal of a public building, such as a train station or shopping center, and should appear aesthetically advantageous on account of the simple structure.

FIG. 3 shows a machined outer mounting plate 12 which has been cut out of a metal sheet. It can be seen that the outer channel openings 120 were exposed by cutting out and deflecting wing members 1211 inwardly. The wing elements 1211 together with a respective web, which forms a channel back 1210, a channel wall segment 121. Each web or channel back 1210 is integrally connected on both sides with the outer mounting plate 12 and thus integrally integrated into this. The wing elements 1211 are, for example, in a range of 30 ° to 60 °, preferably 45 °, relative to the outer mounting plate 12 bent inwards. there For example, the two wing elements 1211 of a wall element 121 may have different bending angles.

Before the wing members 1211 are cut out, they can be advantageously provided with any perforations 10, such as slots and bores or peripheral teeth, as shown in FIG FIG. 5 is shown by an example. There it is also shown that the mutually facing wing elements 1211L, 1211R can be designed asymmetrically. The right wing member 1211R is slightly longer so that it can abut the opposite channel wall segment 111. In FIG. 2 For example, one of the channel wall segments 121 in the area of the front side of the wing elements 1211 is provided with perforations 10. The front sides of the perforated wing members 1211 can therefore be bent inwardly against the wing members 1111 of the adjacent sidewalls 111 to filter the airflow entering the building from outside within the channel K. Air entering the housing is thus filtered through the perforations 10 so that no solids can pass through the venting device 1. This filter device can be incorporated in the pre-processing of the metal plates in a simple manner. The execution according to the FIGS. 4 to 7 is not part of the claimed invention. Starting from this embodiment of the ventilation device 1 of the channel wall segments 111, 112 provided with perforations, a further development step leads to the in FIG. 4 shown embodiment of the venting device 1, wherein the inner and outer channel wall segments 111, 121 are interconnected. In this embodiment, therefore, only one mounting plate is required, which carries the interconnected channel wall segments 111, 121 and in which the inner and outer channel wall segments 111, 121st are formed. So that the air flow can pass from the inner to the outer channel opening 110, 120, the interconnected wing elements 1111, 1211 of the channel wall segments 111, 121 are provided with a perforation 10 or a perforated zone, which is preferably at about 45 ° with respect to the wing elements 1111, 1211 is inclined. In this way, the S-shaped extending air channel K results.

FIG. 5 shows the venting device 1 of FIG. 4 in three-dimensional representation. The mounting plate provided with the channel wall segments 111, 121 has flange elements 150 on both sides, by means of which the ventilation device 1 can be mounted. The device can be mounted with channel wall segments 111, 121 oriented horizontally (arrow A at the top) or vertically (arrow B at the top).

FIG. 6 shows the venting device 1 of FIG. 4 in a schematic representation. In this embodiment, the mounting plate has a rectangular shape with a duty cycle of 50%. In order for this form, the separation of water from the air flow optimally succeed, the openings of the perforation 10, such as slots and holes are inclined in the wing elements 1111; 1211 incorporated that the openings of the perforation 10 of the inner and outer channel opening 110; 120 are turned away and the air flow preferably passes through an edge in the perforation 10.

In order to force a virtually vertical entry of the air flow from the outside into the outer channel openings 120, separating plates 8 are preferably aligned aligned with the outer channel openings 120 in this. In this way, it is ensured that the air flow first reaches the opposite channel wall segment 111, before it passes through the openings of the perforation 10 can pass through. In this way, the water separation is further secured.

Another diversion of the air flow is at the in FIG. 7 achieved venting device 1, wherein the provided with the perforation 10 wing members 1111; 1211 in addition by about 15 ° (105 ° in total), for example, 10 ° to 30 ° (100 ° to 120 ° in total) are inclined outwards.

The advantageous construction of the inventive ventilation device 1 of FIG. 2 also makes it possible to connect the wing elements 1111 of adjacent channel wall segments 111 of a metal plate 11 by suitably manufactured filter 6 with each other.

FIG. 8 shows filter 6, each having a filter element 61 which is provided on both sides with coupling elements 62 which are coupled to front pieces of adjacent wing elements 1111 of the inner mounting plate 11. The filter elements 61 are protected by the channel wall segments 121 of the outer mounting plate 12. Vandals thus have no access to the filter elements 61, so that they can reliably fulfill their functions. From the outside, only a metal structure is visible, which shows no attack surface for vandals.

The function of the simply constructed filter 6 can be freely selected by the user. It can be provided that the filter elements 61 is impermeable only for coarse solid parts or for small parts, as well as insects. The filter element 61 is designed, for example, as a grid and consists for example of plastic or metal.

The coupling elements 62 may be formed, for example, as terminals, wires or hooks, for example, in holes in the wing members 1111; 1211 are insertable.

The wing elements 1111, 1112 can therefore be prepared for receiving the filter 6, so that they can be easily configured and inexpensively manufactured.

Like this in FIG. 8 is shown, the inner and the outer mounting plate 11, 12 can be supplemented by at least one third mounting plate 13. It is particularly easy to combine two pairs of mounting plates. As a result, a further improvement in the function of the ventilation device 1 can still be achieved with a small space requirement.

In FIG. 3 It is further shown that the outer mounting plate 12 is cut to form first and second flange members 128, 129 which, after being bent about the bend lines B1 and B2 by 90 °, form half of a housing frame connected to the corresponding flange members 118, 119 of the inner mounting plate 11 is added to a housing frame with a rectangular cross-section.

On the second flange 119, 129 a mounting flange 1291 is further provided, which is bent by a further bending line B3 by 90 °. The mounting flange 1291 is provided with openings 114, 124, can be guided through the mounting screws 9 and inserted into openings 115, 125 in the opposite mounting plate 11 and 12 respectively. Unless self-winding screws 9 are used, which thread into the openings 115, 125 incorporated, it is preferably provided a connection with screws and nuts. Furthermore, it may be provided that the mounting flange 1291 is inserted into slot-like configured openings 115, 125, before it is angled. The connection between the mounting plates 11 and 12 can therefore be done in various ways.

FIG. 9 shows a composite venting device 1 with a mounting plate 12 which has on the underside another wing member 127 which is rotated about a bending line B4 by about 75 ° outwards and so forms a Traufblech. The inner and / or outer mounting plate 11; 12 can therefore be further supplemented if necessary, for example, to form a Traufblech, a cover plate, an apron, a cover plate or a connecting plate, for example, for the heat exchange. Like this in FIG. 5 is shown, at least one of the mounting plates 11, 12 can be peripherally provided with a mounting flange 126, which serves to attach the venting device 1 to an installation body.

As mentioned, the ventilation device 1 fulfills various functions, which is why it can also be used in a variety of ways. Particularly advantageously, the ventilation device 1 can be used to provide objects with fresh air, which may possibly carry rainwater. However, due to the advantageous construction, the ventilation device 1 can also be used advantageously within buildings in order to allow the exchange of dry air. In principle, however, a venting device can also be used as a separating device which divides or closes off spaces. For example, the ventilation device can be realized as an air-permeable sliding door, which provides access protection to a room. Depending on the needs of the user, the channel wall segments can be vertical, horizontal or inclined.

The simple preferably one-piece or two-piece construction of the venting device makes it possible to meet the wishes of the user with minimal effort.

Claims (7)

1. Ventilation device (1) mounted in a building wall, with at least one channel (K), which extends from at least one internal channel opening (110) to at least one external channel opening (120) such that no direct connection between the internal and the external channel opening (110, 120) results, whereby
   internal and external channel wall segments (111; 121) are provided each with a back element (1110; 1210), which are provided on both sides with wing elements (1111; 1211) that are inclined to the same side;
   the internal channel wall segments (111) lie with the back elements (1110) in an internal plane and the external channel wall segments (121) lie with the back elements (1210) in an external plane;
   between the internal channel wall segments (111) the internal channel openings (110) and between the external channel wall segments (121) the external channel openings (120) are provided;
   the external channel openings (120) each lie opposite to a back element (1110) of the internal channel wall segments (111) and the internal channel openings (110) each lie opposite to a back element (1210) of the external channel wall segments (121); and
   the wing elements (1111, 1211) of the internal and external channel wall segments (111, 121) that are facing one another and that correspond to one another overlap one another separated and delimit a channel gap (100), characterised in,
   that the internal channel wall segments (111) are connected in one part with an internal mounting plate (11), preferably a sheet metal, and are partially cut out therefrom and are bent, so that the at least one internal channel opening (110) results,
   that the external channel wall segments (121) are connected in one part with an external mounting plate (12), preferably a sheet metal, and are partially cut out therefrom and are bent, so that the at least one external channel opening (120) results,
   that the internal and the external mounting plate (11, 12) are aligned in parallel to one another, so that the internal and external channel wall segments (111, 121), which are bent towards one another, overlapping form the at least one channel (K), and
   that the internal and the external channel wall segments (111, 121) are vertically aligned.
2. Ventilation device (1) according to claim 1, characterised in that the wing elements (1111, 1211) of the internal and external channel wall segments (111, 121) are cut out each from the internal and external mounting plate (11, 12) in the shape of a window and that the back elements (1110; 1210) are connected on top and/or below with the mounting plate (11; 12), preferably with a remaining frame.
3. Ventilation device (1) according to claim 1 or 2, characterised in that the internal and the external channel wall segments (111, 121) are engaged into one another or that the wing elements (1111, 1211), which are connected with one another, are bent such, that the at least one channel (K) extending from the external channel opening (110; 120) of the internal or external mounting plate (11; 12) in part extends inclined back again towards the internal or external mounting plate (11; 12), before it reaches the internal channel opening (120, 110) of the external or internal mounting plate (12; 11).
4. Ventilation device (1) according to claim 3, characterised in that the channel (K) extends from the internal channel opening (110) to the external mounting plate (12) and back again to the internal mounting plate (11), before it reaches the external channel opening (120) .
5. Ventilation device (1) according to one of the claims 1 - 4, characterised in that neighbouring front sides of the internal and/or external wing elements (1111; 1211) are connected with one another by a filter (6), which comprises a filter element (61), preferably consisting of scrim made of plastic or metal, which on both sides preferably is connected with coupling elements (62) that are connectable with the wing elements (1111; 1211).
6. Ventilation device (1) according to one of the claims 1 - 5, characterised in that at least one the mounting plates (11, 12) comprises a wing element (127), which forms an eaves flashing or a cover metal sheet and/or that at least one of the mounting plates (11, 12) peripherally exhibits a mounting flange (126), which serves for mounting the ventilation device (1) at an installation body.
7. Ventilation device (1) according to one of the claims 1 - 6, characterised in that the preferably identical mounting plates (11, 12) are punched out of sheet metal and/or that the mounting plates (11, 12) consist of aluminium or sheet-metal and preferably are provided with a refined, optionally galvanized surface, and/or, that the mounting plates (11, 12) at least on the sides facing one another are provided with a surface structure (150) with ribs, edges or corners.

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