WINDOW WITH A VENTILATION DUCT

Description

[0001] The invention relates to a window with a ventilation duct according to the preamble of claim 1.

[0002] A window of this type, which allows sound-insulated ventilation in a tilted or turned sash position, is known per se, for example from DE 10 2016 115 422. However, the generic design has a relatively complex structure and should therefore be further optimized in this respect, as well as with regard to various other properties. A problem arises because the ventilation channel formed in the frame is very difficult to clean and maintain. Furthermore, the known design requires relatively high operating forces to close the sash. A particular disadvantage is that the center seal of the frame slides rather poorly on the insulating web of the sash frame. Another disadvantage is the relatively small opening width in the ventilation position. This opening width is limited, among other things, by the (short) insulating web of the sash frame acting as a sliding surface.

[0003] The invention should therefore take a different approach and create an optimized window with a ventilation channel.

[0004] The invention achieves this objective through the subject matter of claim 1. Furthermore, it provides an advantageous method according to claim 18.

[0005] According to claim 1, a window is created which has at least the following features: a frame composed of several frame profiles, a sash frame composed of several frame profiles, which preferably has at least one surface element and which is movable relative to the frame at least between a closed position and a ventilation position, wherein a circumferential frame rebate space is formed between the frame profiles of the frame and the frame profiles of the sash frame, at least one ventilation channel formed in at least one of the frame profiles of the frame or in at least one of the frame profiles of the sash frame, which has a first ventilation channel opening and a second ventilation channel opening, wherein the sash frame and the frame are designed to close at least one of the ventilation channel openings in their interaction in the first closed position,and in the second position – a ventilation position – to release both ventilation channel openings of the at least one ventilation channel. This window – which is hereinafter also referred to as a ventilation window – is further characterized according to the characterizing feature of claim 1 in that the one or more ventilation channels are each formed in at least one ventilation cassette or several ventilation cassettes, which are inserted into the frame or sash or into the respective frame profile or sash profile.

[0006] This significantly simplifies the installation of the ventilation duct, as it no longer needs to be laboriously integrated directly into the hollow chamber profiles. Instead, it is sufficient to provide or create a recess and then insert the pre-assembled ventilation cassette into the recess, for example, by snapping or clamping it into place. This makes installing a ventilation duct in a ventilation window simple and straightforward.

[0007] The respective ventilation cassette can be inserted in a simple manner, preferably in the closed position and not visible to the outside, into a recess of the respective frame profile or sash profile facing the frame rebate space.

[0008] It is preferable that the ventilation cassette has an insert that is placed in a base element of the ventilation cassette, which is particularly trough-shaped. It is especially preferred that the insert of the ventilation cassette installed in the window be replaceable, which simplifies the maintenance of the ventilation window.

[0009] EP 1 795 691 A1 discloses a ventilation cassette that is a fixed part of a window and provides a type of continuous ventilation function.

[0010] In one design variant, the insert of the ventilation cassette built into the window can be replaced without having to remove the main unit. This means that only the insert needs to be replaced during maintenance, which is particularly straightforward.

[0011] The term "window" should not be defined too narrowly. It encompasses elements with a frame and a sash that is movable relative to it. The frame can be continuous or, as with a door, not continuous. For the purposes of this document, a door is therefore also a window. A window can be installed in an opening in a wall or partition of a building. It can also be part of a facade or be integrated into one. The frame itself can thus also form part of a facade structure.

[0012] For particularly easy maintenance, the ventilation cassette may be provided with a cover to cover the base element and, if applicable, the insert, and the cover may be detachably attached to the base element with a removable fastener.

[0013] It can be advantageous and simple to provide a sealing groove on the ventilation cassette, especially on the cover.

[0014] It is particularly easy if the insert and the cover form a structurally replaceable unit.

[0015] The insert can consist of one or more materials. For example, the insert can contain a filter material. It can also be designed to contain a film, particularly a heavy-duty film.

[0016] It can be advantageously designed so that, when inserted into the base element, the device causes one or more deflections of the airflow and / or a division of the airflow into several partial airflows. In this way, the sound insulation properties can be optimized in particular.

[0017] It may be provided that at least one ventilation duct runs in an L-shape or a U-shape.

[0018] It may be designed so that the respective ventilation cassette is inserted into a recess in the respective frame profile or sash profile facing the frame rebate. This makes installation and maintenance particularly straightforward.

[0019] It is also possible to install several ventilation cassettes in recesses facing the frame rebate of the respective frame profile or sash profile. In this way, each ventilation cassette can have compact dimensions and maintenance remains simple.

[0020] Preferably - but not necessarily - the ventilation cassette(s) may be provided only on the upper side of the frame when installed.

[0021] The respective ventilation cassette also makes the maintenance of a ventilation window particularly easy.

[0022] It can be advantageously designed that each ventilation cassette has ventilation channel openings oriented towards the frame rebate. It can be particularly advantageous that, when closed, the ventilation channel openings lie completely within the frame rebate between the stop seals. This does not alter the external appearance of the window, preserving the preferred design. Furthermore, the ventilation cassettes can be replaced very easily. This is necessary approximately annually to meet cleanliness requirements (dust, insects, etc.). No professional is required for replacement.

[0023] It is structurally advantageous and simple if the center seal is located on the ventilation cassette, especially on the groove of the ventilation cassette.

[0024] It may also be provided that the sash, when moving from the closed position to the ventilation position, can be moved by 50 to 80 mm relative to the frame at at least one point.

[0025] Overall, advantageously high sound insulation values ​​can be achieved. The air exchange rate can exceed 12 m³ / h (preferably >14) at 2 Pa (Pascal air pressure) and >25 m³ / h (preferably >28) at 10 Pa (air pressure difference between inside and outside, e.g., caused by wind pressure or static pressure difference). Synthetic microfibers capable of filtering pollen are preferably arranged in the ventilation cassettes. This is particularly beneficial for allergy sufferers.

[0026] After a predetermined interval, this cassette can be easily cleaned and / or replaced after opening the window, for example, after one or more years. The ventilation cassette can be attached to the frame in various ways, such as by clamping or preferably with a fastener like at least one screw. It is also possible to replace the filter material inside the ventilation cassette if the cassette is equipped with such a material.

[0027] The ventilation cassette may have one or more of the additional features directed to the ventilation cassette in the preceding claims relating to the ventilation window.

[0028] Finally, according to claim 18, a method for forming the ventilation duct in a window with the features of claim 2 is also created, characterized in that a frame profile is provided, that a recess facing the frame rebate space is then formed in the respective frame profile in which the ventilation duct is to be formed, and that the ventilation cassette is inserted into this recess facing the frame rebate space of the respective frame profile or the respective sash frame profile, which has the replaceable insert.

[0029] According to a further optional embodiment, it is advantageous if at least one sealing plane is formed between the frame and the sash frame in the area of ​​the frame rebate space in the open state, which is formed by at least one seal which, at least in the ventilation position, rests against the frame or the sash frame with a sliding contact section.

[0030] In a further optional configuration, the sliding section can be designed so that, in the ventilation position, it rests against a sliding guide rail on the sash or frame. This guide rail is formed, and in particular attached, to the sash or frame and projects with a free end into the rebate. A particular advantage of this configuration is that the sliding guide rail provides a component adapted to one or more seals. The sliding guide rail can be matched to the one or more seals in terms of shape, surface, and material, thus achieving optimal sliding and / or rolling action. This minimizes the operating forces required on the window.

[0031] It is preferably intended that the guide rail is solely for the purpose of bearing against the (sliding) seal arranged on the opposite frame and does not perform any other static function of the sash frame. It is therefore not an integral strip of the sash frame or frame that significantly contributes to or influences its statics, as is the case with an insulating strip that connects two metal shells. While the guide rail does influence the closing and opening forces when the sash is opened and closed, since a corresponding sliding seal can preferably bear against it and, if necessary, slide during the opening and closing movement, this is also one of its functions and one of its advantages, to which it can be specifically adapted, unlike strips or profiles that primarily serve other purposes.

[0032] According to one embodiment, the sliding guide rail can extend to the sash frame in sections, in particular in sections substantially parallel to it, especially such that the sliding guide rail extends in sections parallel to an insulating web of the sash frame, which connects two metal shells of the sash frame and forms a section of the rebate space.

[0033] Furthermore, according to a further advantageous embodiment of the invention, the seal, which comes into contact with the window in the open / ventilation position and optionally also in the closed position, can be designed as a central seal. This central seal can, in turn, be advantageously designed to divide the frame rebate space into at least two frame rebate space sections, so that in the ventilation position, air can be exchanged between the two frame rebate space sections essentially only through the ventilation channel. The central seal has a sealing base and at least one sealing section pivotably attached to the sealing base, which is articulated to the sealing base. In the ventilation position, the sealing section, at least in the area(s) where a respective ventilation channel is formed, rests at its free end against the contact guide rail with its contact sliding section.Two or more such center seals may also be provided.

[0034] It can then be provided that at least two or at least three sealing planes are formed around the perimeter of the frame rebate between the frame and the sash in the closed position. One or two of these sealing planes can also be formed by one or more stop seals between the frame and the sash. These sealing planes exist only when the sash is closed. When the sash is opened, the window is moved into its ventilation position, allowing air to be exchanged through these open sealing planes and the ventilation channel between the rooms, which the window, in its installed state, typically allows for the exchange of air between the interior and exterior.

[0035] According to one variant, it is advantageously provided that the center seal is attached to the frame and is located in the ventilation position in contact with the sash frame.

[0036] Preferably, the center seal is attached to the frame and the guide rail to the sash. It may be advantageous for the guide rail to be mounted laterally on and / or in a corner area of ​​the corresponding sash profile. For example, one end of the guide rail may be fixed to a metal shell of the sash profile, laterally to an insulating web of the sash profile. This otherwise generally unused area of ​​the sash provides a suitable space for the means of securing the guide rail, such as a groove or similar feature.

[0037] Another option allows for the advantageous provision that at least one center seal rests against the system's guide rail in both the ventilation and closed positions. If two center seals are provided, it is expedient to design one of them and the other so that it rests against the system's guide rail only in the closed position, while in the ventilation position it is spaced away from it, thus allowing access to the ventilation duct.

[0038] It can be advantageously designed that one or at least one of the center seals is a lip seal with one or more sealing lips, each of which is flexible. This allows the flexible sealing lips to be used to rest against the guide rail, thus minimizing or preventing any obstruction of the opening or closing movement of the sash.

[0039] In one variant, it may be advantageously provided that all of the multi-chamber profiles of the frame and / or the sash are made entirely or substantially entirely of plastic. However, they can also consist of several materials such as metal and plastic. Preferably, the frame and sash are each formed from profiles that have one or more metal shells and an insulating spacer on one of the metal shells or between two metal shells. Other constructions, such as sash frames and / or frames with three metal shells and two insulating spacer zones between each of the metal shells, are also conceivable.

[0040] Another option allows for one or more of the multi-chamber hollow plastic profiles of the frame and / or sash, which according to one variant are essentially made of plastic, to have at least one reinforcing insert. This reinforcing insert can be a metal profile, for example, a tube. It is advantageous if steel tubes, e.g., square tubes, are simply inserted into the PVC profiles and screwed in place as reinforcing inserts.

[0041] It may also be provided that, as a reinforcement, a reinforcing layer, e.g. made of metal, is manufactured in co-extrusion with the multi-chamber hollow profile made of plastic.

[0042] Preferably, the stop seals and / or the center seal are each seals that are inserted into and held in retaining grooves. Such seals are relatively inexpensive and, above all, easy to install. They can be laid all around without having to be cut at the corners. The arrangement in retaining grooves allows the seals to be easily replaced. Preferably, the seals can also be welded together.

[0043] Small, thin-walled seals offer minimal resistance against the sealing stops. Furthermore, they are less susceptible to tolerances. This advantageously minimizes the operating forces required for the element.

[0044] The relatively small opening width (barely noticeable when operated) in the aforementioned prior art results from the sealing element, the insulating bar. This bar has only a limited length. In the design according to the invention, the sliding sealing lip closes the gap between the frame and the sash profile right up to the outer edge of the sash profile. This achieves a larger opening width ("W"). Depending on the profile width ("B"), a width of 50 to 80 mm is preferably achieved. The geometry of the sliding seal, in particular the length of the sealing lip, is also crucial. Overall, even larger widths are possible. A width of 55 to 65 mm is particularly preferred. A formula for a maximum opening width for sound-insulated ventilation could be assumed to be Wmax. = B - 25 mm.

[0045] It is advantageous if the central seal has a sealing base and a sealing section pivotably attached to the sealing base. This sealing section is preferably designed as a pivotable sealing lip. The sealing section – in particular the sealing lip – can be articulated to the sealing base.

[0046] Advantageous embodiments of the invention can be found in the remaining dependent claims.

[0047] The invention is described in more detail below with reference to exemplary embodiments and the drawings. The invention is not limited to these exemplary embodiments but can also be realized in other ways, either literally or equivalently. The drawings show: Fig. 1 in a) and b) each shows a section through an upper horizontally extending section of a first window according to the invention, for example in the installed state, wherein the window is shown in a) in a closed position and in b) in a ventilation position; Fig. 2 in a) and b) each shows a section through an upper horizontally extending section of a second window according to the invention, for example in the installed state, wherein the window is shown in a) in a closed position and in b) in a ventilation position;Fig. 3 in a) a section through, for example, an upper horizontally extending section of a third window according to the invention, wherein the window is shown in a closed position; in b) and c) a first section through, for example, an upper horizontally extending section of a fourth window according to the invention similar to the window from a), wherein the window in b) is shown in a closed position and in c) in a ventilation position outside the area of ​​a ventilation cassette; and in d) and e) a second section through, for example, another upper horizontally extending section of the fourth window according to the invention from b) and c) in the area of ​​a ventilation cassette, wherein the window in d) is shown in a closed position and in e) in a ventilation position;Fig. 4 in a) and b) a side view and a perspective view of a frame for a further ventilation window; Fig. 5 a perspective view of a first ventilation cassette; Fig. 6 a perspective view of the first ventilation cassette made of ; Fig. 5 with an insert that can be used in these; Fig. 7 a section from Fig. 6 , which essentially shows the application; Fig. 8 a top view of a section of the ventilation cassette made of Fig. 6 Fig. 9 a side view of another ventilation window; Fig. 10 a perspective view of a section of the ventilation window made of Fig. 9 ; Fig. 11 a perspective view of a section of the ventilation window made of Fig. 9 and 10 when installing an add-on profile; Fig. 12 a side view of the ventilation window made of Fig. 10 and 11 during the insertion of an insert; Fig. 13 a perspective view of a section of the ventilation window made of Fig. 11after the insertion of the insert; and Fig. 14 in a) to h) cross-sections of ventilation cassettes with different inserts.

[0048] The following description of the figures describes various embodiments. The individual features of these embodiments can advantageously be used in combination with the respective further features of the embodiments. However, they can also be combined with other embodiments shown or not shown and are also suitable as advantageous embodiments of the objects described in one or more of the main and dependent claims.

[0049] Fig. 1 Figure 1 shows a section of a window. This window has a surrounding frame 1. This frame is composed of several frame profiles 1' to form a frame shape, in particular a rectangular shape.

[0050] A sash movable relative to the frame 1 is arranged on the frame 1. The sash preferably has a circumferentially closed frame 2 and a surface element 3, such as a pane, inserted into and received by the frame 2. The frame 2 is assembled from several frame profiles 2' to form a frame shape, in particular a rectangular shape.

[0051] The frame profiles 1' and / or the sash frame profiles 2' can be designed as multi-chamber hollow profiles.

[0052] The frame profiles can be made of plastic. However, they can also be made of so-called composite profiles ( Fig. 3They then typically consist of one or more metal profiles – also referred to synonymously as metal shells – and one or more insulating strips. A preferred design involves connecting two metal profile levels via an insulating strip, usually made of plastic. However, other designs are also conceivable, in particular designs with one metal profile level and one insulating profile level made of plastic, as well as designs with three metal profile levels and two insulating profile levels.

[0053] In the respective embodiments, a preferably circumferential frame rebate F is formed between the frame 1 and the sash 2 or their frame profiles 1', 2'. This frame rebate F essentially extends between the outer circumference of the sash 2 and the inner circumference of the frame 1.

[0054] The respective window of the Fig. 1 or 3It serves to close and open a room opening of a building (not shown here), whereby a room I (e.g. an surrounding room of a building) is separated from a room II (e.g. an interior of the building).

[0055] The terms "frame profile 1'" and "frame 1" as well as "sash frame profile 2'" and "sash frame 2" are used interchangeably below. This is because the means and configurations discussed below can each preferably be formed circumferentially or sectionally on the frame 1 or on the sash frame 2. They can be formed on only one of the corresponding frame profiles of the sash frame 2 and the frame 1 (e.g., on the frame profiles opposite a hinge axis) or on several of the corresponding frame profiles of the sash frame 2 and the frame 1. On the profiles perpendicular to the Fig. 1bIn the ventilation position, corresponding gaps also form on the running sides of the window frame, but these gaps do not have a constant width when the window is tilted open. Nevertheless, to further improve ventilation, ventilation channels 8 can also be installed on these sides, in accordance with the following principles: Fig. 1a and 1b also be trained.

[0056] The sash frame 2 can – preferably on one side or towards an adjacent space II – have a contact web 4, with which it abuts the frame 1 directly or via a stop seal 5 attached to the sash frame 2 when closed. Similarly, – preferably on the other side or towards the other adjacent space I – the frame 1 can have a contact web 6, with which it abuts the frame 1 directly or via a stop seal 7 attached to the contact web 6 when closed. In this way, a gap SII and a gap SI between the frame rebate space F and space I or II are tightly sealed.

[0057] It is provided that at least in the frame 1 or in the sash frame 2 – here in the frame 1 – a ventilation duct 8 (shown as a dashed line) is formed, which has a first ventilation duct opening 9 and a second ventilation duct opening 10. It is preferably provided that ventilation duct openings 9 and 10 open into the frame rebate space F. The ventilation duct 8 can have a U-shape.

[0058] After Fig. 1 It is further provided that at least the hollow profile(s) of the frame 1 or of the sash frame 2, in which the ventilation channel 8 is formed, are designed as multi-chamber hollow profiles made of plastic.

[0059] These multi-chamber hollow profiles made of plastic preferably have three or more hollow chambers H1, H2, ... between the space side I and the space II. According to the exemplary embodiment of the Fig. 1Seven hollow chambers, H1 to H7, are provided between chamber I and chamber II (from inside to outside). Additional hollow chambers can also be formed perpendicular to the direction I-II, particularly in the area of ​​the mounting webs. These measures, individually and in combination, ensure very good thermal insulation properties. The partition walls between the hollow chambers inside the profiles are preferably thinner than the outer walls, especially those facing chamber I and chamber II.

[0060] One or more additional hollow chambers H8, H9, H10, H11 may be provided. One or more of these additional hollow chambers H8, H9 may be advantageously located in the respective web 4 or 6. These measures, individually or in combination, further improve sound insulation and thermal insulation.

[0061] It may be advantageous to provide that all hollow profiles of the frame 1 or the sash frame 2 are designed as multi-chamber hollow profiles made of plastic.

[0062] Various plastics are suitable as materials. PVC is particularly preferred. Furthermore, it may be provided that one or more of the multi-chamber hollow plastic profiles of the frame 1 and / or one or more of the multi-chamber hollow plastic profiles of the sash 2 have at least one reinforcing layer 11, 12.

[0063] The respective reinforcing reinforcement 11, 12 can be made of a different material than the multi-chamber hollow plastic profile, for example, a metal, in particular steel, and designed as a metal profile, for example, as a metal strip or metal plate or the like. However, it can also be designed as reinforcing reinforcement made of a different plastic, for example, a glass fiber reinforced plastic.

[0064] The multi-chamber profiles then preferably have a continuous plastic outer wall towards a first room side I and preferably have a continuous plastic outer wall towards a second room side II.

[0065] It is further preferred that the ventilation duct 8 is formed in a recess 13, in particular in a milled recess formed in the frame 1 or the sash frame 2 starting from the frame rebate space.

[0066] It can be advantageously further provided that the ventilation duct 8 is formed in a ventilation cassette 14, which is inserted into the recess 13, in particular into the milled-out section, in the frame 1 or the sash 2. Several of these ventilation cassettes 14 can also be provided per frame profile or on several sides of the frame (not shown). The ventilation duct 8 can thus be formed simply in one or in several of the profiles of the surrounding frame 1 or the sash 2.

[0067] It may preferably be provided that the respective ventilation cassette 14 has a trough- or basin-like base element 15. It may further be provided that the respective ventilation cassette 14 has a cover 16.

[0068] Preferably, the cover 16 is aligned towards the frame rebate space F.

[0069] A central seal 18 is preferably formed on the frame profile, extending into the frame rebate space F. The central seal 18 can be attached to the ventilation cassette 14, in particular to the cover 16. For this purpose, a fastening means, in particular an undercut groove 17, for the central seal 18 can be provided on the ventilation cassette 14, in particular on the cover 16.

[0070] The central seal 18 can have a sealing base 20 with a sealing foot 21 that is inserted into the groove. The seal 18 can further have a sealing section 22 pivotably attached to the sealing base 20. This section can be designed as a single sealing lip ( Fig. 1a and 1 b ) or as a combination of two or more sealing lips ( Fig. 2a and b). The sealing section 22 can in particular have a sealing lip which is curved in itself and / or has a further hinged section, so that it is divided into two lip areas which are movable relative to each other and which connect to form a longer lip.

[0071] It is particularly advantageous if the sealing section 22 is pivotable relative to the sealing base 21 and is long enough to be in contact with the sash frame 2. It preferably rests there with an end section. This end section can be arc-shaped.

[0072] The sealing section 22 can have an end section with a sliding contact section 23, which rests on the corresponding frame profile, here the sash frame profile, and can slide smoothly during relative movements between the frame 1 and the sash frame 2. This results in a smooth, easy opening movement that is not significantly impeded by the adjacent sealing surface.

[0073] Preferably, the sliding contact section 23 is provided at the center seal where a ventilation channel 8 is also provided in the respective frame profile. This can be on one side of the frame 1 or sash 2, or on several sides, preferably on three sides. If it is a tilt window, preferably no ventilation channel is provided on the side where the tilt axis is located. In this case, the sliding contact section 23 can be omitted.

[0074] It is particularly advantageous that the sealing section 22 is preferably so long that, when the sash is opened, it initially remains in contact with the sash frame 2 over a certain opening angle, or at least in a ventilation position to be explained, it is in contact with or comes into contact with the sash frame 2, so that it divides the frame rebate space F into two areas in the ventilation position, between which air exchange takes place essentially only via the ventilation channel 8.

[0075] The central seal 18 thus divides the frame rebate space F into a first and a second area FI, FII (corresponding to the orientation to the rooms I and II), between which air exchange is only possible via the ventilation channel 8 formed in the frame 1.

[0076] Alternatively, if the ventilation duct 8 is arranged in the frame 1, the central seal can be attached to the sash frame 2 and extend to the frame 1. In this case, too, the sealing section 22 should preferably be long enough that, when the sash is opened, it initially rests against the frame 1 beyond a certain opening angle and then remains in contact with it, or at least in a ventilation position to be explained later, it rests against the frame 1, so that it divides the frame rebate space F into two areas in the ventilation position, between which air exchange occurs essentially only via the ventilation duct 8.

[0077] It should be noted again at this point that the arrangement can also be "completely" reversed, in which case the ventilation duct is located in the sash frame 2. The arrangement of the center seal 18 can then be from the sash frame 2 to the frame 1 or vice versa.

[0078] In ventilation position L of the Fig. 1b The sash was moved relative to the frame 1 into an open position, in particular by pivoting and / or sliding it. This open position is a ventilation position. It may – but this is not mandatory – correspond to the maximum achievable position when tilting or turning, or the like.

[0079] In this position, columns SI and SII are open because the stop seals 5 and 7 are no longer in contact with frame 1 and sash 2, respectively. The center seal 18 is still in contact with sash 2. The sash is still partially within the perimeter defined by frame 2. Since the center seal 18 blocks the direct passage between rooms FI and FII, air exchange between these rooms, and thus also between rooms I and II, can only occur through the ventilation duct. This provides a very advantageous combination of ventilation and sound insulation.

[0080] If, for example, room I is the surrounding space of a building and room II is an interior space II of the building, air can flow into interior space I through the gap SI, the frame rebate space section FI, the ventilation duct 8, the frame rebate space section FII, and the gap SII. The sound is thereby advantageously dampened, particularly by the redirection of the ventilation duct.

[0081] The air flowing through the ventilation duct should therefore preferably change direction once or several times. This has a beneficial effect on sound insulation.

[0082] The ventilation duct 8 has the first ventilation duct opening 9 and the second ventilation duct opening 10. These two ventilation duct openings 9, 10 can be formed in the ventilation cassette 14. Preferably, the two ventilation duct openings 9, 10 are formed in the cover 16.

[0083] It may further be advantageously provided that one or, particularly preferably, both ventilation duct openings 9, 10 are oriented towards the frame rebate space F.

[0084] Within the ventilation cassette 14, at least one wall 19 can be formed, which divides the interior of the ventilation cassette into sections. This wall 19 can have at least one opening 19a. In each of the sections, one of the ventilation duct openings 9, 10 is located.

[0085] In a preferred embodiment, the ventilation duct 8 runs within the ventilation cassette 14 (or even without a ventilation cassette) in an approximately U-shaped configuration. It extends from the first ventilation duct opening 9 into the ventilation cassette 14, roughly parallel to the surface element 3, then runs approximately perpendicular to the surface element 3, extends through the opening 19a in the wall 19, and again runs roughly parallel to the surface element to the ventilation duct opening 10. In this way, the direction of the airflow changes several times. This dampens or prevents the transmission of sound from room I to room II and vice versa. Nevertheless, an airflow for ventilation can still pass from room I to room II.

[0086] The ventilation cassette 15 can also be used in the embodiment of the Fig. 3 be provided for (See e.g. Fig. 3b ( ) to d), will be explained in more detail below). It can Figure 3 then analogously to Fig. 1The ventilation duct can be inserted into a chamber, in particular a milled recess in the frame, and / or it can completely replace one or more otherwise provided insulating bars within its area. However, the ventilation duct can also be formed directly as a channel-like milled recess in the frame, or it can be bounded by channel-like elements that are inserted into these recesses.

[0087] It can also be provided that a guide rail 24 is arranged on the sash frame 2 or on its sash frame profiles 2'. The center seal 18 can then rest against this guide rail in the ventilation position L. Alternatively, the guide rail 24 can also be designed so that the center seal 18 rests against the guide rail even in the closed position.

[0088] It can be advantageous for the guide rail 24 to be positioned relatively far laterally and / or in a corner area of ​​the respective sash frame profile 2'. This corner area is preferably the corner area that, in the open and ventilation position, is closest to the corresponding frame profile 1'. For example, the guide rail can be located laterally outside an area defined by the inner and outer edge planes of the insulating glass unit. This is advantageous, for example, in the case of Fig. 1 the case. In Fig. 3 This is also the case, except that here the sliding rail is preferably attached to one of the metal profiles, in particular to one of the aluminum profiles of this construction.

[0089] The sliding rail 24 can extend so far in the rebate area that the central seal 18 rests against it even when closed.

[0090] In this way, a relatively large opening width can be achieved to a particular advantage, in which air between room I and room II can essentially only be exchanged via the ventilation duct 8.

[0091] The sliding rail 24 can be made of metal or another material such as plastic. It must also have at least one hollow chamber.

[0092] The system sliding strip 24 can also be advantageously designed as a base strip, which is fixed to the respective wing frame profile 2' by means of a fastening, for example a tongue and groove connection.

[0093] The frame profiles, in particular the outer walls to rooms I and II, are designed according to the exemplary embodiment of the Fig. 1They are made of a plastic material, preferably PVC. Preferably, they consist entirely of plastic – possibly with the exception of internal reinforcing profiles or reinforcements. They can be formed in one piece, particularly insofar as they consist of plastic.

[0094] The outer walls of the hollow chamber profiles made of plastic preferably have a thickness of 2 - 4 mm, while the thickness of the partition walls forming the hollow chambers H1 - H7 can be 1 - 2 mm.

[0095] In a preferred embodiment, additional reinforcing reinforcements 10, 11 made of metal are optionally arranged in the hollow chambers for static reinforcement and further subdivide them.

[0096] Frame profiles 1', 2' are particularly preferred if they have embedded reinforcement profiles manufactured by a co-extrusion process, the reinforcements being made of aluminum or fiber-reinforced plastic.

[0097] It is preferably provided that the stop seals (inner / outer) 5, 7 and the center seal 18 are formed around the perimeter, i.e. running along four sides of the frame, while the sealing section is not provided on all sides of the frame.

[0098] In the design according to the invention, the sliding contact section 23 closes the frame rebate space or gap between the frame and sash up to the outer profile edge of the sash frame 2. This results in a larger opening width ("W") compared to the prior art. Depending on the profile width ("B" between space I and space II), a width of 50 to 80 mm is preferably achieved. The geometry of the sliding seal, in particular the length of the sealing lip, is also advantageous. Overall, relatively large opening widths can be achieved in the ventilation position. A width of 55 to 65 mm is particularly preferred. The following formula can be used for a maximum opening width for sound-insulated ventilation: Wmax. = B - 25 mm.

[0099] A significantly larger number of hollow chambers compared to an aluminum composite construction has a beneficial effect with regard to sound insulation.

[0100] By using the sliding guide rail 24, the friction of the sliding seal on the sash frame can be reduced to a minimum. This means that the material and surface structure are matched. Preferably, the sliding seal has a roughened surface structure on the sliding side. The sliding guide rail is preferably characterized by a sliding coating. The surface structure can, of course, also be designed differently.

[0101] The inner chamber H7 is preferably not used directly as a ventilation duct, as this is not advantageous for sound insulation reasons. Instead, two chambers can form between the ventilation cassette wall and the outer surface, which are particularly preferably separated from each other by an aluminum wall.

[0102] After Fig. 2a and b is in addition to the construction of the Fig. 1a and bIt is provided that a further sealing lip 25 is formed on the central seal 18 at the sealing base 20, which rests against the sash frame 2 in the closed state, so that even four sealing levels are advantageously formed in the frame rebate space between the frame and the sash frame in sections.

[0103] A particular advantage of the sliding guide rail 24 is that it provides a component adapted to the one or more corresponding seal(s) against which it rests. The sliding guide rail 24 can be adjusted to the seals in terms of shape, surface, and material, ensuring optimal sliding and / or rolling action. This minimizes the operating forces required on the window. The seals "slide / roll" on the sliding guide rail 24 until they no longer make contact with the frame profile.

[0104] Optimal friction is achieved with a slightly rough surface. Insulating webs are generally very smooth, so seals adhere more readily to them. For the mounting guide rails 24, however, a metal, particularly aluminum, is preferably used. In one advantageous variant, the rough surface can be achieved through deep-pore anodizing. Special coatings that form a slightly rough surface after drying can also be used to create a slightly rough surface. Finally, plastics can also be applied or overmolded, thus providing suitable surfaces for the mounting guide rail.

[0105] Overmolding can be achieved, for example, using an extrusion process. It is important that the system's sliding rail can be optimally adjusted to the seals. This is not possible with system insulating bars.

[0106] The ventilation window functions correctly until the seal lifts off the insulating strip. This point limits the opening width. The inventive sliding guide rail maintains contact with the seal for significantly longer than in the prior art, thus enabling a greater opening width. A particularly advantageous feature is that the sliding guide rail extends to the edge of the frame profile, thereby allowing for a greater opening width.

[0107] The guide rail 24 is connected to the side of the frame profile facing the rebate, to which it is to be attached. Known connection methods such as screws, rivets, clips, adhesives, etc., are suitable for this purpose. It is preferred to attach the guide rail to the rebate side of the sash frame profile 102 close to an edge, particularly the edge facing the interior or exterior, as this allows a relatively large opening width to be achieved easily in the ventilation position.

[0108] Figure 3 Figures a) and b) to e) each show a section through two different aluminum composite profile constructions, consisting of a frame profile 101 and a sash profile 102. As exemplified in Fig. 3a As shown in 3b) to e), the outer edge of the sash frame profile, to which the guide rail is to be attached, can thus be formed by an outer aluminum profile shell. The advantage is that the guide rails can be used in different frame profile systems as needed. The rails can also be easily replaced in case of repair or wear.

[0109] The frame profile 101 can - as in Fig. 3aFigures ) to e) show that in this variant, the sash frame profile 102 has a first metal shell 101a and a second metal shell 101b. These two metal shells 101a and 101b can be connected to each other via an insulating spacer 101c (or several insulating spacers). The sash frame profile 102 can also have a first metal shell 102a and a second metal shell 102b. These two metal shells 102a and 102b are connected to each other via an insulating spacer 102c (or several insulating spacers). When installed, the first metal shells 101a, 102a can face an exterior side I of a building, and the second metal shells can face an interior side II of a building. An insulating glass unit 103 is inserted into the sash frame.

[0110] In the rebate F between the frame profiles, a center seal 104 and a sliding seal 105 are arranged. They can be attached to the frame. The sliding seal 105 also functionally acts as a kind of center seal, and the center seal 104 as a kind of contact seal, the latter lifting away from the sash when opened, which is not the case with the center and contact seals or the sliding seal 105.

[0111] In contrast to the seals 104 and 105, a variant of a mounting guide rail 124 is provided in the rebate F. This mounting guide rail 124 is attached to the sash frame profile 102 in the area of ​​the outer side I. It has a mounting end 124a (which can also be called a mounting base 124a or mounting foot). The mounting foot can be designed as a projection that engages in the groove 102d. Alternatively or additionally, it can also be clamped and / or snapped into place there.

[0112] The mounting base 124a can thus engage in the groove 102d of the sash frame profile, in particular in the first metal shell 102a (preferably towards the outside I). Additionally and / or alternatively, the mounting end 124a can be fastened there with a fastener, for example, screwed in place.

[0113] Starting from the fastening end 124a, the mounting sliding strip 124 projects slightly into the rebate F in the direction of the frame profile 101 and then extends, spaced apart from the insulating web 102c of the sash frame profile, next to it in the direction of the second metal shell 102b of the sash frame 102, but does not touch it.

[0114] The sliding rail of the system features Fig. 3b ) to e) at their end a cable receptacle 134 into which a cable 135, for example a cable 135 with one or more electrical and / or optical conductor(s), can be held, for example by locking.

[0115] The cable groove can be formed on the insulating web 102 c) of the sash frame profile 102. In this way, the cable 135 is securely held in the cable groove 134 and protected from damage towards the rebate by the guide rail 124. The guide rail thus also acts as a cable retainer, which significantly simplifies cable routing on the sash frame. Conversely, with a guide rail on the frame, cable routing on the frame is similarly simplified (not shown).

[0116] In the Fig. 3a In the closed position shown, the two seals 104 and 105 - i.e., the center seal 104 and the sliding seal 105 - are both in contact with the sliding guide rail 124.

[0117] The sliding rail 124 projects in the rebate over the insulating web of the sash frame, but is thermally advantageous not to lie on the insulating web, so that preferably even a gap X can form towards the insulating web in sections.

[0118] This advantageous design allows the guide rail 24 to deform resiliently in order to evade acting forces, particularly when opening and closing the sash. This advantageously reduces the operating forces required when opening and closing the sash. In composite constructions, the guide rail 124 can, in preferred embodiments, extend to approximately the middle of the insulating web 102c. However, it can also be longer. Preferably, it is designed such that, in the open position of the sash, at least one of the two seals 104, 105, in particular the sliding seal 105, bears against it (similar to or analogous to...). Fig. 1b ).

[0119] Further ventilation windows are described below, each of which is provided with one or more ventilation cassettes 14. The windows themselves can be categorized according to the type of Fig. 1 , 2 or 3a or 3b) to e) They can be structured in different ways. However, they can also have a structure that differs in details.

[0120] The following description relates in particular to preferred features and variants relating to the ventilation cassettes 14 or to the window construction, insofar as this relates to the integration of the ventilation cassettes 14 into the construction of the respective ventilation windows. The features of the ventilation cassettes 14 described below can be considered advantageous options for the windows described in the following. Figs. 1 to 3 This can be implemented on specially designed windows or on differently constructed windows. In the case of the Fig. 3In the window shown, the cassette would preferably replace the ventilation duct that is only partially inserted directly into the frame profile.

[0121] This shows Fig. 4 a) and b) show a side view and a perspective view of another ventilation window designed for the installation of one (or more) ventilation cassettes, such as those found, for example, in Fig. 3 is shown.

[0122] Each ventilation cassette 14 in turn has a trough- or tray-like base element 15. This base element 15 is also designed in a box-like form. The base element 15 can be closed on one base side and on four sides, and open on one side facing the rebate when installed.

[0123] It can further be provided that the respective ventilation cassette 14 – particularly on this open side – has the cover 16. One or more openings 16a can be provided in this cover 16. Together with the cover 16, the basic element 14 forms a box that is completely closed except for the openings 16. Preferably, at least two of the openings 16a, 16b are provided. Then, more preferably, the first opening 16a forms the first ventilation duct opening 9 and the second opening 9b forms the second ventilation duct opening 10.

[0124] However, several first penetrations 16a can also jointly form the first ventilation duct opening 9, and several second penetrations 9b can each form the second ventilation duct opening 10. In this case, the first and second ventilation duct openings can each be interrupted by first and second webs 16c, 16d.

[0125] The base element 15 can then have a partially or fully circumferential flange 151. The cover 16 preferably has at least one web 161, an angled section, or a corresponding flange with which the cover 16 rests on the edge or the flange 151 of the base element 15 in the mounted position. In this way, a defined position of the cover 16 on the base element 15 is easily established. In addition, the flange 151 of the base element 15 can serve as an advantageous insertion limit when the base element 15 is inserted into the recess 13 of the frame—here, the cover frame—so that it is easily and correctly fitted into the recess 14 during assembly (see, among others, [reference]). Fig. 6 and 13 ).

[0126] The interior of the ventilation cassette 14 may or may not be adapted to these first and second openings 16a, b.

[0127] In the latter case, the interior of the ventilation cassette is not filled, but empty. This ensures good ventilation.

[0128] However, it may also be stipulated that – as already mentioned – Fig. 1a For example, the interior of the ventilation cassette 14 is partially filled. This allows for further optimization of sound insulation. Additionally, optional measures can be taken to purify the airflow.

[0129] An insert 141 can be installed in the ventilation cassette to achieve this subdivision. The insert 141 is particularly advantageous—but not necessarily—as a replaceable insert. The insert can consist entirely or partially of a filter material 142. As the air flows through the ventilation cassette 14, particles from the passing air are deposited on and within this material. In this way, the airflow is advantageously filtered and cleaned as it passes through the ventilation cassette 14 (see Fig. 14 ).

[0130] The ventilation duct 8, insofar as it extends within the ventilation cassette 14, can form a single channel or it can be further subdivided into several sub-ducts 8a, 8b, 8c, etc. This allows for increased filter efficiency and precise control of the ventilation effect. Furthermore, sound insulation can be varied in many ways, particularly depending on the specific conditions at the installation site and the external environment. For example, a ventilation window installed in a building opening facing a busy street may require more sound insulation than a window oriented towards a quieter side of the building.

[0131] To optimize sound insulation, the insert 141 can be designed to consist of two or more materials, rather than just a single material – for example, the filter material 142 already mentioned. The additional material can then be designed to further optimize sound insulation. For instance, it can be advantageous to coat one side of the filter material 141 with a film 143, such as a heavy-duty film.

[0132] Preferably, the cover 16 is aligned with the frame rebate space F.

[0133] It is advantageous if the cover is detachably attached to the ventilation cassette 14, particularly if a replaceable insert 141 is inserted into the ventilation cassette. It can also form a structural unit with the insert 141.

[0134] It can then be optionally advantageous to provide that the cover 16 is attached to the ventilation cassette 14 in such a way that it can be completely or almost completely removed and reattached without tools. For this purpose, for example, a type of quick-release fastener 143 with a fastening lever 144 can be provided, which is rotatable and can be locked and / or clamped under an edge of a projection 144 of the base element 15 or the like. In this way, changing the insert 141 can be done easily and quickly. However, it is also conceivable that a tool is used to change the insert, for example, to loosen a screw that holds the cover to the ventilation cassette 14.

[0135] The center seal 18 can also be attached to the cover 16. In particular, it has a groove 17 on its side facing the rebate, in which the sealing base 21 of the corresponding (here: center) seal 18 can be anchored. This groove can align with a corresponding groove in the rebate of the frame. In this way, the groove of the frame is advantageously not interrupted on this side of the frame, and the corresponding seal can also be securely mounted in the area of ​​the ventilation cassette 14.

[0136] A particular advantage of the ventilation cassette 14 with the replaceable insert 141 is that the insert 141 of the cassette 14 can be easily changed during operation, and therefore by the end user. This insert change is comparable to changing the filter of a vacuum cleaner. Overall, the ventilation cassette 14 itself is also easy to install. The ventilation cassette 14 can preferably be positioned invisibly in the rebate, which is particularly advantageous for the Fig. 4a and b show.

[0137] This shows Fig. 4a also that an additional profile 110 is added to the upper frame profile 1 ( Fig. 4 , Fig. 11 ) can be attached. This additional profile 110 can be provided to increase the height of the frame 1 (according to the designations of the directions in Fig. 10, su) to increase. This is advantageous because correspondingly taller ventilation cassettes 14 can then be integrated into the frame 1. This is particularly evident from the following examples. Figs. 9 to 13 , in particular Fig. 10 Then both the frame profile 101 and the additional profile, which is placed on the outside of the upper frame profile 101 in the installation position, have the corresponding recesses 13 for inserting the respective ventilation cassette.

[0138] The ventilation cassettes 4 are preferably mounted in the frame and preferably exclusively in an insulating spacer zone formed from insulating spacers - i.e., in particular from plastic spacers (see Fig. 3a Regarding the insulating bars, a cassette 14 is not shown here; it would be provided in the area of ​​the insulating bars 101c, which (and preferably only these) would then have the recess 13.

[0139] After Fig. 3b) to e) in this embodiment the ventilation duct 8 is also formed in one or more ventilation cassettes 14, each of which is inserted into a recess 13, in particular into a milled recess which is formed in the frame 1 (or the sash frame 2) e.g. continuously or starting from the frame rebate space, wherein a ventilation cassette 14 is preferably inserted into this milled recess.

[0140] Preferably, in this area of ​​the ventilation cassette 14, the recesses 13 are designed such that the insulating webs 101c in this area are completely removed – possibly except for the base areas in the receiving grooves 101d of the metal shells. If necessary, parts of the receiving grooves 101d are milled away without damaging the hollow chamber plane of the hollow chamber(s) 101e.

[0141] This makes machining the milled recesses 13 simple. The ventilation cassette 14 provides thermal insulation instead of the insulating strips.

[0142] On the respective side of the frame where a ventilation duct 8 is formed, this must also extend according to Fig. 3b ) to e) do not extend over the entire length of the respective frame section / frame beam. For example, one, two, or more ventilation cassettes may be provided on one side of the frame, spaced apart from each other so that the sections of the Fig. 3b ) and c) on the one hand and 3d) and e) on the other. Several exceptions 103c must then be provided.

[0143] This does not further complicate the processing of the frame profiles despite the need to provide a ventilation cassette 14, because the one or more necessary recesses 13 (the after) can be easily made in metal shells and / or, in particular, in the insulating profiles 101c made of plastic. Fig. 3b) to e) may also be openings) for inserting the ventilation cassette 14. The ventilation cassette 14 is preferably attached there by clamping and / or snapping or with fasteners such as one or more screws or adhesive.

[0144] To enable the ventilation cassette 14 to be used even in very narrow frame profiles, the frame – here the cover frame 1 – can be made taller in the area of ​​the ventilation cassettes 14. Cassettes that protrude (through the profile) can also extend into recesses in the surrounding masonry (not shown here).

[0145] In Fig. 9Three of the ventilation cassettes 14 are shown, for example, formed in or inserted into the upper mullion or the upper frame profile 101 of the frame 1. Correspondingly, this frame profile 101 can have three recesses 13, in this case, three. The left and right ventilation cassettes have already been installed. The middle ventilation cassette 14 is shown in a position before installation, close to the recess 13 of the frame 1 into which it will be inserted.

[0146] The cassettes are preferably mounted on the upper side of a vertically oriented window when installed. The preferred mounting direction is from the inside out, or in this case, from bottom to top into the recess within the rebate. There, they can, for example, be locked in place with a locking edge behind a corresponding locking edge of the recess 13 (not shown here).

[0147] However, it has also been shown that external mounting, i.e., from the side opposite the rebate, is possible. This mounting of the ventilation cassette 14 can be done once during initial installation if a replaceable insert 141 is provided. Alternatively, the entire ventilation cassette can be designed to be replaceable. Other options for inserting the ventilation cassette are conceivable. For example, it can also have a replaceable insert 141 accessible from the side, or it can be mounted entirely from the side, although this is less preferred for aesthetic reasons.

[0148] The number and position of the ventilation cassettes 14 are particularly advantageous in the manner shown in the figures, but are otherwise freely selectable or adaptable to the circumstances and requirements.

[0149] The individual cassettes preferably consist of the base element 14, the cover 16 and the insert 141, the latter two elements also being able to form an interchangeable unit.

[0150] Preferably - but not necessarily - the width b of the ventilation cassette is 14 ( Fig. 10 ) between 30 and 70 mm. This is advantageous because it allows for easy integration into standard insulating bars of corresponding width. Particularly on a plastic window, they can also be wider. Their length is essentially arbitrary. It is advantageous to design them to be between 150 mm and 250 mm long (length I) so that their installation, and especially the replacement of the insert 141, remains easy. A length I = 200 mm is particularly preferred.

[0151] The depth or height h of the ventilation cassette 14 (see Fig. 10The height h is arbitrarily selectable. Preferably, it lies between 50 and 150 mm, particularly between 60 and 120 mm. A height h of 90 mm is especially preferred.

[0152] The ventilation cassettes 14 can be mounted flush in the profile rebate. Common fasteners and methods such as screwing, clamping, clipping, or similar are suitable for this purpose. T-nuts can also be used. A fastening device for the cover can preferably be provided on the box. Figure 8 This is a quarter-circle lever. Clip levers are also possible.

[0153] The cover 16 has a groove 17 or a corresponding groove contour for receiving a center seal. Further grooves or contours that replicate the folded surface of the profiles are possible.

[0154] Box 141 can preferably be made of a plastic, in particular manufactured by injection molding. Other known manufacturing methods are also possible, e.g., bonding or welding several wall sections together. Other materials are also possible, e.g., aluminum. However, plastic is preferred due to its poor thermal conductivity.

[0155] As discussed, the cover 16 preferably has two or more openings 16a, b. These are preferably approximately 20 mm long and 10 mm wide, and are preferably subdivided by 20 mm wide webs 16c, d. This results, by way of example, in a comb-like configuration on both sides of a central longitudinal web, which here has the groove 17.

[0156] The cover 16 preferably follows the rebate contour, in particular with the receiving groove 17 for the central seal 18, which here also forms a "grinding seal" that seals the gap between the frame and the sash frame when the sash is partially open. Alternatively, the seal can also be an integral part of the cover.

[0157] The groove or seal is located between the inlet and outlet openings or penetrations 16a, b of duct 8. Advantageously, one opening can be provided for each opening; however, multiple openings and separate ventilation ducts per cassette are also possible for sound insulation and high air volume (depending on requirements). On the other hand, the openings must not be too small, otherwise sufficient air volume / airflow will not be achieved. One opening each for the inlet and outlet has proven to be optimal. A single U-shaped ventilation duct has proven particularly advantageous.

[0158] Channels 8a, b, c, ... are preferably separated from each other. By changing the channel cross-section, different frequency ranges can be attenuated to varying degrees. For example, different covers with sound-absorbing material can be used to dampen road noise than to dampen wind turbine noise or playground noise. The cassette system is therefore easily adaptable to customer needs. The system can also be easily modified later.

[0159] The cover 16 is preferably mounted and dismounted from the box using a screw, clip, or lever mechanism for easy operation. This simplifies and facilitates maintenance work.

[0160] For practical handling, cover 16 and insert 14 can form a single structural unit. They can then be replaced together during maintenance, for example, when a replacement interval has expired after which it is recommended to replace the filter material 141 or then the entire insert 141.

[0161] The insert 141 can be glued, welded or otherwise mechanically connected to the cover 16.

[0162] Suitable sound insulation material 142 includes well-known foam materials. Alternatively or additionally, the previously mentioned heavy foils 143 can also be used. Materials such as EVA and bitumen can also be used.

[0163] Key performance indicators include sound insulation values ​​(dB), air pressure (PA), and airflow rate (m³ / h). Since these parameters are directly related, improving one will negatively impact another. However, overall performance can be improved through design modifications and the selection of optimal materials. Cassettes according to the invention—such as those used, for example, in Figs. 9 to 14 The following values ​​are shown, for example: air flow rate of 12.7 m³ / h at 2 PA and 28.7 m³ / h at 10 PA; pressure difference between inside and outside and sound insulation with tilted window = 32 dB (closed = 47 dB)

[0164] Fig. 14 Figure 1 shows various inserts 141, which are used in otherwise identically constructed ventilation cassettes with base element 15 and cover 16. The cover 16 can be adapted to the insert 141 with regard to the position of the openings 16a, b.

[0165] Shown are U-shaped ventilation channels as well as inserts with filter material 142 and optional heavy foil 143.

[0166] The ventilation ducts 8 of the Fig. 14 e) to h) exhibit a shallower depth than that of the Fig. 14 a) to d) The ventilation channels 8 can be formed from the interaction between the walls of the insert 141 and the base element 15 and the cover 16. Reference sign Frame 1 sash frame 2 Surface element 3 jetty 4 Stop seal 5 jetty 6 Stop seal 7 ventilation duct 8, 8a, 8b, ..... first ventilation duct opening 9 second ventilation duct opening 10 Reinforcement 11, 12 recess 13 ventilation cassette 14 basic element 15 cover 16 Breakthroughs 16a, 16b footbridges 16c, 16d Nut 17 Center seal 18 Wall 19 passage 19a Seal base 20 Sealing foot 21 Sealing section 22 Plant sliding section 23 Attachment sliding rail 24 Sealing lip 25 sliding surface 26 Mounting area 27 Frame profile 101 first metal bowl 101a second metal bowl 101b Insulating strip 101c Recording slots 101d Hollow chambers 101e sash frame profile 102 first metal bowl 102a second metal bowl 102b Insulating strip 102c Nut 1β2d Insulating glass pane 103 Center seal 104 Sliding seal 105 Attachment sliding rail 124 areas 124', 124" fastening end 124a sliding surface 126, 126' grooves 127 Hollow chamber 128 Corner pieces 130 leg 131, 132 Noses 133 cable receptacles 134 Cable 135 Mission 141 Filter material 141 Heavy foil 142 flange 151 footbridges 161 gap X Hollow chambers H1, H2, .... Folding space F Folding area section FI, FII gap SI, SII Opening width W

Claims

1. Window, comprising at least the following features: a. a window frame (1) composed of a plurality of frame profiles (1'), b. a sash frame (2) which is composed of a plurality of frame profiles (2'), preferably has at least one surface element (3) and is movable relative to the window frame (1) at least between a closed position and a ventilation position, c. wherein a continuous frame rebate space (F) is formed between the frame profiles (1', 2') of the window frame (1) and the frame profiles (1', 2') of the sash frame (2), d. at least one ventilation duct (8) formed in at least one of the frame profiles (1') of the window frame (1) or in at least one of the frame profiles (2') of the sash frame (2), which has a first ventilation duct opening (9) and a second ventilation duct opening (10), e. wherein the sash frame (2) and the window frame (1) are designed to close at least one of the ventilation duct openings (9, 10) in the closed position and to open both ventilation duct openings (9, 10) of the at least one ventilation duct (8) in the ventilation position, characterized in that f. the one or more ventilation ducts (8) are each formed in at least one ventilation cassette (14) or a plurality of ventilation cassettes, which are inserted into the window frame or the sash frame or into the respective window frame profile (1') or the respective sash frame profile (2').

2. Window according to claim 1, characterized in that the ventilation cassette has an insert (141) which is inserted into an especially trough-like base element (15) of the ventilation cassette.

3. Window according to claim 2, characterized in that the insert (141) of the ventilation cassette (14) installed in the window is replaceable.

4. Window according to claim 3, characterized in that the insert (141) of the ventilation cassette (14) installed in the window is replaceable without having to remove the base element (15).

5. Window according to claim 4, characterized in that the ventilation cassette has a cover (16) for covering the base element (15) and, optionally, the insert (141).

6. Window according to one of the preceding claims, characterized in that the respective ventilation cassette (14) is inserted in the closed position in such a way that it is not visible from the outside into a recess (13) of the respective frame profile or the respective sash frame profile facing the frame rebate space.

7. Window according to claim 5 or 6, insofar as this refers back to claim 5, characterized in that the insert (141) and the cover (16) form a structurally interchangeable unit.

8. Window according to one of claims 2 to 7, characterized in that the insert (141), when inserted into the base element (15), causes one or more deflections of an air flow and / or a division of the air flow into several partial air flows.

9. Window according to one of the preceding claims, characterized in that the window frame profile (101) and / or the sash frame profile has / have a first metal shell (101a) and a second metal shell (101b) and an insulating web plane arranged between them, wherein the two metal shells further each have at least one hollow chamber plane.

10. Window according to claim 6 and 9, characterized in that, in the area of the ventilation cassette (14), the recess (13) is designed such that the insulating webs (101c) in this area - except, optionally, for the foot areas in the receiving grooves (101d) of the metal shells (101a, 101b) - are removed completely and in that parts of the receiving grooves (101d) for the ends of the insulating webs are milled away without the milling extending into the respective hollow chamber plane of the metal shells.

11. Window according to one of the preceding claims, characterized in that the ventilation cassette(s) (14) is / are provided in recess(es) (13) of the window frame profile (101) of the upper side of the window frame when installed.

12. Window according to one of the preceding claims, characterized in that the ventilation cassette(s) (14) is / are higher than the window frame profile (101) and in that an additional profile (110) is placed on the window frame profile, into which the ventilation cassette(s) (14) protrude(s).

13. Window according to one of the preceding claims, characterized in that the air flowing through the ventilation duct must change direction once or several times.

14. Window according to claim 5 or one of claims 6 to 13, insofar as the same refers back to claim 5, characterized in that the respective ventilation cassette on the cover (16) has the ventilation duct openings and in that these are aligned with the frame rebate space (F).

15. Window according to one of the preceding claims, characterized in that at least one sealing plane is formed in the opening state between the window frame (1) and the sash frame (2) in the area of the frame rebate.

16. Window according to claim 15, characterized in that the sealing plane has at least one center seal which rests against a contact slide strip (24, 124) both in the ventilation state and in the closed state.

17. Window according to claim 16, characterized in that two center seals are provided, wherein at least one of these center seals abuts against the contact slide strip (24, 124) both in the ventilation state and in the closed state, and wherein the other abuts against the contact slide strip (24, 124) only in the closed state.

18. Method for forming the at least one ventilation duct (8) in a window according to claim 2 or according to one of claims 3 to 17, insofar as these refer back to claim 2, characterized in that a window frame profile is provided, in that a recess facing the frame rebate space is then formed in the respective window frame profile, in which the ventilation duct is to be formed, and in that the ventilation cassette is inserted into this recess facing the frame rebate space of the respective frame profile (1') or the respective sash frame profile (2'), which comprises the replaceable insert (141).