DE102010018515A1 - Wall element for thermal insulation of building facades, and for use in product line, and hence has outer layer facing outer chamber, where surface is designed to face towards building facade - Google Patents

Abstract

The wall element (10) has an outer layer (31) facing an outer chamber, where a surface (32a) is designed to face towards a building facade. Vacuum insulating elements are formed as vacuum insulating plate (40). The vacuum insulating plate is provided with through holes or recesses, which are surrounded completely by welding edges. An assembly device (21) is provided, which extends through an outer layer. The outer layer is made of polystyrene. Independent claims are also included for the following: (1) a product line; and (2) a method for manufacturing a wall element for thermal insulation of building facades.

Description

The The invention relates to a wall element for thermal insulation of building facades, with one facing the exterior Layer and with a building facade facing surface, with a recess between the outer space facing Layer and the building façade facing surface, with mounting devices for attachment to the building wall, with vacuum insulation elements, which are inserted into the recess are. It also relates to a process for the preparation of a such wall element and an assortment of several wall elements.

wall elements for the cladding of facades of buildings have been known for a long time. These wall elements must be one Sufficient variety of demands.

For example, the DE 35 03 543 C2 a widely used and proven construction for the cladding of facades or the like. Here are embedded in a hard foam layer small ceramic plates in the manner of a masonry, which are also referred to as Klinkerriemchen. House walls that are clad in such a way have the appearance of a fully bricked clinker wall and thus meet the highest optical demands. Nevertheless, these are rapidly mountable walls that can be used for prefabricated house construction as well as for retrofitting façade cladding. The hard foam layer also forms a very good thermal insulation for the resulting building wall.

In such wall elements are already prepared mounting devices provided with which the wall elements then on the building can be attached. For this purpose, through holes the hard foam layers are guided in the Joints of the brickwork forming Klinkerriemchen be arranged and plastered after completion.

For such mounting devices, for example, fastening systems can be used from dowels with screws or plastic nails, as for example from the WO 2008/017347 A8 are known.

The integrated production of mounting sleeves for such wall elements is in an example in the DE 195 38 277 C2 described.

In order to improve such wall elements in their properties and to be able to take into account, for example, a ventilation on the back and a compensation emerging voltage, there are proposals for appropriate versions, which inter alia in the DE 100 34 551 B4 or the EP 1 496 171 B1 are described. The structure and structure of these prefabricated wall elements is quite complex and demanding. Grooves, various projections and recesses, mounting devices, etc. are used for various mechanical, thermal and optical purposes. However, since all these features are already integrated in the manufacturing process, they do not pose a problem during actual assembly at the construction site and the wall elements can be assembled quickly and properly.

such Wall elements not only have the highest optical Meet requirements and mechanical loads At any time, you must also at the Be wall to mount and have good thermal insulation properties feature.

Especially the thermal insulation properties are of particular importance in view of the increasing interest in energy savings. This is taken into account by the fact that a material with very low thermal conductivity is used for the hard foam layers usually used, preferably polystyrene. In a heat insulation from the inside are used as a material such as in the DE 102 43 299 B4 and the DE 10 2007 025 303 A1 proposed, also plate-shaped components made of cork used in combination with clay-containing materials.

In addition, there are various attempts to increase the wall thickness of the wall elements. From the DE 20 2005 016 942 U1 For example, the idea is known to provide such wall elements in skilful form with additional backing plates and so inexpensive to assemble depending on the requirement of different thickness wall elements.

The Increase in wall thickness abuts however, to practical limits and the resulting space requirements When remodeling the building is also not in every respect desired, for example, by complicating it considering effective window and door openings. A Further optimization of available as rigid foam layers However, standing materials is difficult, but it would be desirable to find opportunities here.

Another form of wall elements with good thermal insulation properties, for example, in the EP 1 544 367 B1 proposed. There composite thermal insulation panels are described, which are constructed of vacuum insulation panels, which are surrounded on both sides by plastic foam. The plastic foam is then replaced by an aluminum foil lie covered and added another plate as protection.

such Vacuum insulation panels consist of an evacuated, porous Core material of low thermal conductivity and a vacuum-tight envelope, in particular a metallized high-barrier film made of plastic. The evacuable, porous core is approximately made of microporous silica powder or porous Foams made of polyurethane or polystyrene. The gas pressures inside these vacuum insulation panels are at 0.1 hPa to 10 hPa. The thermal insulation properties of such Vacuum insulation board are excellent, their thermal conductivity is very low. However, these vacuum insulation panels are extremely sensitive, among other things, they must not be longer Time to be exposed to increased humidity and the sensitive films can easily be destroyed become. If the film is destroyed, the positive properties of the Vacuum insulation panels destroyed.

However, an installation of such vacuum insulation panels in construction is difficult and the EP 1 544 367 B1 Therefore, proposes a series of processing steps to allow the use of such vacuum insulation panels by a foam with pressure-resistant elements, high barrier films and the like still on the construction.

In spite of However, it is the good thermal insulation properties unchanged difficult, vacuum insulation panels too to use in the tough demands of construction. Problematic in particular, the attachment of the wall elements with the vacuum insulation panels on vertical walls, because there is still the difficulty of a mechanically stable and durable even in climatic conditions Attachment to make. Despite the good thermal insulation properties The vacuum insulation panels are the previously envisaged Concepts unsatisfactory, on the one hand in terms of durability, on the other hand, in terms of ease of assembly and finally also with regard to the cost issues that are also relevant in the construction sector.

From the DE 101 15 669 A1 is a thermal insulation for houses known among other things, which should lead to a reduction in energy consumption of these houses. For this purpose, components are used which contain a very large number of relatively small-shaped vacuum bodies. These Vakuumdämmkörperpartikel are embedded in conventional thermal insulation material and each have a kind of cone or cylindrical shape. These vacuum bodies are separated from each other by hollow cylinders, which allow predefined openings for mechanical attachment of the plate by means of dowels.

The Thermal insulation is here largely by the conventional Thermal insulation material made and partially improved by the small vacuum body.

From the motor vehicle is a proposal from about EP 1 045 079 B1 or the DE 600 36 572 T2 known, in which for refrigerated vehicles, an improvement in the thermal insulation is provided by inserting vacuum insulation and Füllstoffdämmelementen between two plate-shaped thermal barrier coatings.

These for the wall of refrigerated vehicles possibly suitable conception is for the thermal insulation totally unsuitable for supporting walls and for that also not intended.

task The invention is therefore to propose wall elements that are outstanding Have thermal insulation properties better than those are made with conventional wall elements Hard foam layers of polystyrene can be achieved without the Wall thickness increase too much must and without the practicability of the proven To dispense with wall elements made of hard foam layers.

A Another object is to provide a method for producing a to propose such wall element.

The The first object is achieved with the invention in a generic Wall element for the thermal insulation of Building facades solved by the vacuum insulation elements are formed in the form of a vacuum insulation board that the vacuum insulation board is provided with openings or recesses that completely surrounded by welding edges or of these are at least limited, and that these openings associated Mounting devices without the first when attached to the building wall inserted parts only through the outer layer and / or the building facade facing surface and do not protrude through the recess.

at In one method, the object is achieved by a method for producing a wall element for the thermal insulation of building facades, with the following steps: forms of Layers of a foam material, providing the shaped layers with assembly facilities and the outside architecturally structuring elements, inserting a vacuum insulation panel in a recess formed inside the layers, and sealing the vacuum insulation board by placing the second layers.

With such a solution it becomes possible to use the excellent thermal insulation properties of vacuum insulation panels, without having to give up the advantages of the well-proven and already widely used wall elements of the prior art.

It becomes the previous wall element with all its additional elements, Connecting grooves and joints, with skip-over edges and corner connectors for the clinker straps and especially with the proven and existing assembly equipment, such as dowels, through holes and the like used. These wall elements are often already by the competent Authorities admitted for use in construction, which results in a considerable cost advantage.

In These wall elements, which are made of rigid foam such as polystyrene or cork with integrated thermal insulation clay or other elements with good thermal insulation properties are constructed inside, according to the invention recesses created. These recesses leave those areas free, which are needed by the mounting equipment, ie for example, from the bores for the dowels, and By the way, they also release those areas which needed to other functional goals, such as Introductions of corner elements to consider.

In these recesses, which are flat within the wall element are located, then the vacuum insulation panels are inserted.

There the vacuum insulation panels in a flat, however can be manufactured almost arbitrarily predetermined shape, can also deviate from the usual square shape Design of the surface of the vacuum insulation board are taken into account, to leave about assembly facilities free. One is preferred From perforations and undercuts refrain to the simplest possible Ensure production and reliable design to be able to.

To the insertion of the vacuum insulation panel then becomes the recess closed again from the rear, so that the outer shape of the complete wall element unchanged; only the manufactured recess in the The interior with its filling by a vacuum insulation panel changes it Layout.

Indeed is the vacuum insulation board exactly to this outer Adapt shape with their functional elements.

The resulting wall element has in the vast area its extensive extension now the excellent Thermal insulation properties of the vacuum insulation panel. Not in the relatively few surface areas occupied by the vacuum insulation panel, around the assembly facilities and in the peripheral edge areas of the wall element, it remains with the good thermal insulation properties hard foam layers and cork boards or other layers, which are used there.

While at design from the DE 101 15 669 A1 Passing a variety of bridges of conventional material between the individual vacuum insulation bodies and thus can not properly show the excellent thermal insulation properties of the vacuum body, according to the invention, only a very few areas on the outer edge and immediately formed around the mounting devices as material bridges. In accordance with the invention, large-scale areas of virtually continuous vacuum insulation panels with the dimensions of, for example, standard formats and only a few penetrations in the area of the assembly facilities are produced.

This has the consequence that compared to conventional wall elements and also to wall elements according to the conception of the DE 101 15 669 A1 a significantly increased thermal insulation property occurs and consequently the wall thickness of the wall elements can be significantly lowered.

There Incidentally, the mechanical properties of the wall elements but compared to the conventional or not only change slightly, the existing ones can change Approvals continue to be used and the outstanding properties in terms mechanical stability, in terms of ventilation the underlying masonry of the building wall and also in terms of the formation of corner elements can continue be used.

There the vacuum insulation panels with thermal conductivities can be used, which is 5 to 10 times lower than polystyrene and related insulation materials are the wall thicknesses are comparatively low. The Layer thicknesses, which according to the current regulations now up to can rise above 50 cm to practicable orders of magnitude by 5 cm to 20 cm are limited.

The Wall elements according to the invention can unchanged with clinker straps for the outer cladding provided by facades, but it is also possible to do an internal insulation.

Not only in the construction of new buildings, but also in the renovation already existing buildings can be both a space-as also energy-saving conception are made possible.

With regard to the efficient and unchanged usable assembly facilities with their mounting options such as DE 35 03 543 C2 can be achieved with the wall elements according to the invention useful lives of considerable length, in particular of several decades, even in significant weather fluctuations with wind and moisture. Due to the design according to the invention also a long-lasting moisture exposure to the entire wall element by about a continuous rain or standing over several weeks snowdrift is no problem for the life, despite the use of sensitive vacuum insulation panels.

By the use of the otherwise proven vacuum insulation panels and the frequently used wall elements with their mounting devices and hard foam layers arise reliable, cost-effective, functional and also easily assembled and therefore reasonable labor costs causing wall elements.

Damage to the vacuum insulation panels during production can be easily avoided, since this production is not carried out at the construction site but at the factory in advance. In addition, an approximately faulty vacuum insulation panel can be determined by the use of test systems before or during installation, which test systems, for example, in the EP 1 493 007 B1 are described.

Even at later times, a functional test of the vacuum tightness of the vacuum insulation panels is fundamentally possible when using special verification devices. For this either offers, one in the DE 10 2006 042 426 A1 to use described device for non-contact control of vacuum insulation panels by means of RFID technology or to create in the wall elements from the outset an access to the vacuum insulation panels from the outside. It should be noted that due to the prefabrication in the factory, the relative position of the vacuum insulation panels within the recesses in the interior of the wall elements are precisely known and only from the outside a plasterable and isolable access for such, comparatively rarely required accesses would have to be provided.

There the contour shape of the required vacuum insulation panels can be quite complicated and a series of bulges and Indentations from a convex, and only in a first approximation about Square or rectangular blank may be required is, would be the production of a single vacuum insulation board possibly costly with this complicated cut; there However, the number of required wall elements is very large and each of these wall elements one or more insulation boards the same, prior art blank requires is total Also for this cost-effective production possible.

As These vacuum insulation panels are discussed with openings fitted. The surface of the vacuum insulation panel is therefore provided with holes. These holes will be not pierced later, but from the outset the production of vacuum insulation panels integrated. This breakthrough is therefore completely surrounded by a weld-in edge, which Welding edge the vacuum inside the vacuum insulation board secures and connects the two outer sides. Similar Welded edges run around the outside of the Vacuum insulation panels around.

at Such vacuum insulation panels, the mounting devices through the vacuum insulation panels inside the wall elements protrude. When inserting the vacuum insulation panel would be However, it is a hindrance if there is a through the recess protruding mounting device is located, such as a dowel over then the vacuum insulation panel placed suitably would have to be. One would prefer here the mounting equipment so that they only through the outer and inner layers of the wall element protrude, but not by the recess. Only at the place of use, so in a fortification on the building wall, for example, would Screws or similar elements through the mounting devices and then only through the recesses and in it passed vacuum insulation panels passed be provided whose openings are suitable at these locations.

On this way can from the outset of the static point of view certain arrangement of the mounting devices within a wall element considered for attachment to a building facade when the vacuum insulation panels are manufactured.

Alternatively, it can be provided in a preferred procedure that the mounting devices, such as dowels and screws, the vacuum insulation panels not pierced, but come prefabricated next to these. This can be realized by the fact that the vacuum insulation panels so far have indentations, which in a sense the area of Monta spare outlets. These indentations are edged by the welding edges. Then the treatment at the construction site is also very simple and it must only be noted that the provided wall elements may only be used completely and completely and not cuts or divisions may be made for small areas on the site.

A immediate integration of a vacuum insulation panel during the conventional manufacturing process of the wall elements, ie during foaming, the introduction of the Klinkerriemchen or the provision of the mounting devices is very problematic. Since the vacuum insulation panels are mechanically very sensitive and even with slight damage to the outer Envelopes endanger the tightness of the vacuum could be, the mechanical stresses should be be kept away from them, in the usual for the production of wall elements and required operations on the vacuum insulation panels would affect, for example, the rolling and conveying operations, the overmolding and foaming with foams elevated temperature values, etc. To be considered also that in the production of hard foam layers chemical Substances such as pentane or other gases are present during the the production become volatile, but the outer Condition of a vacuum insulation plate acted upon can attack.

According to the Invention accounts for all these loads. The wall element is initially without the vacuum insulation panel, however with all other functional elements, mounting devices, clinker straps or Wärmedämmlehmbestandteilen completed and the vacuum insulation panel only needs to be in or one of the recess (s) are inserted.

These Recess can either after complete production the wall element by the way by mechanical shaping or it will be produced during the manufacturing process of the wall element is molded with the same.

This does not necessarily have to be done by an undercut; the recess can completely from the back of the wall element provided there and that to cover the recess or the then in the recess located vacuum insulation panel the back of the wall element forming part made separately and shaped and placed after introduction of the vacuum insulation panel become.

It So it is possible that for the cover of the vacuum insulation board in their recess inward towards the building facade another layer of the same material is used, which also forms the outer space facing layer.

alternative but it is also possible, here instead a Bautenschutzfolie use.

In certain applications it is even possible leave this area completely and then the wall element with the freely accessible vacuum insulation panel directly from outside to attach to the building facade, so that the building facade closes the recess.

To the Protection of the vacuum insulation panel is preferred but the recess cover at least with a Bautenschutzfolie.

by virtue of the sheathing of the vacuum insulation board from all sides There are areas where the wall element with its hard foam area or the existing cork board areas without interposition a section of a vacuum insulation panel directly from the Building wall extends to the exterior space. These too However, material composition is not a heat or cold bridge, but already highly insulating, in particular when closed-cell polystyrene is used as rigid foam material is used, no ventilation and no heat conduction allows.

The Use of polystyrene instead of, for example, a plastic foam As polyurethane has a number of significant benefits. Because polystyrene is closed-cell, it can be of any kind dowelled by already existing building walls or glued and there for the thermal renovation of buildings serve. It is not necessary open cells such as polyurethane to protect against gas exchange. polystyrene foam is firm and at the same time elastic and can therefore very well as protection serve against mechanical impairments, as well in the conventional wall elements, without the in the Recesses inside the polystyrene arranged vacuum insulation panels disturbing this or vice versa; on the contrary, the sheathing with the polystyrene just serves as special suitable protection for the sensitive vacuum insulation panels.

About that In addition, this material also contributes to the prevention of Heat conduction at, leads itself already to a high-quality insulation and also to a moisture protection.

The vacuum insulation panels have circumferential narrow welding edges, which arise due to the design. This very shallow one Weld edges serve to connect the two outer foils of the vacuum insulation panels and thus to seal the vacuum in the area between these two outer foils. So they lead to an encapsulation or welding or bonding of the vacuum and arise in the production by connecting the outer foils of the vacuum insulation panels.

According to one preferred embodiment of the present invention these are in themselves in the plane of vacuum insulation panels located welding edges within the recesses bent by 90 ° and raised to a certain extent. You then avoid cold spots within the Element inside the recesses.

These Folds are preferably provided only at the edge of the recesses, so not for the edges of the penetrations for the assembly facilities. There they are not needed.

at the same time is also ensured by the unfolding of the edges, that the vacuum insulation panels with the unfolded edges fit exactly in the recesses, as the insertion significantly easier becomes. Nevertheless, this avoids that air-filled cavities in the area between the vacuum insulation panels and the edge the recesses arise.

For the management of special insulation problems at indoor and outside corners of the wall elements could be the vacuum insulation panels protected inside the polystyrene foam around corners become.

Of the Protection of the vacuum insulation panels inside, ie in the recesses The wall elements, not only against heat, but also against exposure to ultraviolet and infrared Rays, such as solar radiation. Also complete the penetration of weather moisture is avoided.

There the wall elements with snap closures or as overfolding or fold and cover strip can be executed, there is the possibility of measuring and control lines to lead in it.

The in the wall elements with foamed-in mounting devices, for example, the sleeves of the element for penetration and to accommodate the fasteners are insulating and take the mounting equipment, such as the screws and dowels, non-positively, so that there is no heat convection can occur.

Next the already mentioned possibilities are possible also other architectural exterior designs as a finished part already in the factory. These include besides those mentioned foamed clinker bricks also other foamed brick elements, Metals, plastics and the like.

The Wall elements are completely factory-made under precise definition all statically required boundary conditions and the exact matching Vacuum insulation panels manufactured as a standard part, so no cutting process is required at the construction site. The Vacuum insulation panels must therefore be at the construction site neither handled nor even touched or contacted become. It remains at the construction site so with the very short assembly times, which are needed for the wall elements.

With a particular embodiment of the invention may even yet another problem to be taken into account. So may turn out at the construction site, that contrary to a previous one Calculation but sections of wall elements needed become. Possibly also spontaneous pieces of wall surfaces needed for repair work or even at to be carried out in a hurry and not to be prepared accordingly Construction work.

Also In such cases, of course, a wall element may not simply cut with inserted vacuum insulation panels while damaging the vacuum insulation panels. As discussed leads to damage an inserted vacuum insulation board that these unusable becomes, since the insulating effect of the vacuum then no more entry.

For but this case can be considered from the outset, that an assortment of wall elements, that for a construction measure is prepared, in addition to a variety of standard provided in the same size wall elements also contains some differently designed wall elements.

These Although differently shaped wall elements have the same outer Manifestation, the same size and the same Appearance like the standard wall elements, located in the interior However, recess is a much smaller copy of a vacuum insulation panel that inserted only half or even less than one Third of the area occupies. This vacuum insulation board is also located adjacent to one of the edges and not about center.

The remaining space of the recess can be filled by an insert, which consists in particular of a heat insulating material, for example of the same material, from the the other layers also exist, in particular the layer facing the outer space. In the first place hard foams made of polystyrene, phenolic resin or polyurethane are considered.

Becomes now requires a wall element whose size less than the size of a standard wall element is, so can from these specially prepared wall elements with the smaller vacuum insulation panel easily cut off so much As for the occupancy of the wall surface of the Building facade is required. It is only on it to make sure that not the area is cut in which the smaller one Vacuum insulation is located. A cut through the insert and the other layers is for their thermal insulation properties irrelevant and therefore can be just as optimal for occupying the Building facade desired to be guided.

is the still to be occupied wall surface so small that even one reduced size of a special wall element with the vacuum insulation board located therein no longer non-destructive, then the other side This thermal insulation board used in the just the vacuum insulation panel is not located. Also in this Trap is therefore a cut easily possible.

The concept according to the invention becomes particularly variable if one combines the inventive idea with the thoughts of, say, the DE 20 2005 016 942 U1 , Thus, on the one hand, a form of a wall element containing the vacuum insulation panel in a recess is created, the exterior surface of which facing the exterior space is not provided with architecturally structuring elements. Instead, another layer is provided with such architecturally structuring elements that does not contain vacuum insulation panels, but fits exactly on the outside of the aforementioned wall elements.

On This way, the wall elements for thermal insulation of building facades with the inserted vacuum insulation panels combined with a variety of outer panels very different appearance. At the architecturally structuring Elements, for example, think of clinker strips, which in a variety of colors or sizes and forms can be provided.

On This way, the cost of warehousing significantly reduced the wall elements of the invention be, not for anyone, possibly from the builder of a property desired form of a Klinkerriemchens complete wall elements provided with vacuum insulation panels Need to become. Instead, only always the same shaped Wall elements with integrated vacuum insulation panels needed and a suitably prepared plurality of different elements with the outer desired structures.

in the The following is an exemplary embodiment with reference to the drawing the invention described in more detail. It shows:

1 a schematic section through an inventive wall element and

2 a plan view of the building wall element 1 ,

An Indian 1 schematically illustrated wall element 10 has a wall thickness 11 and a flat extension with a length 12 and a width 13 (see 2 ). When the wall element 10 attached to a building wall, for example, is the length 12 the dimension in the horizontal direction and the width 13 the dimension in the vertical direction.

The wall element 10 serves, for example, to disguise a building wall to the outside. The thickness of the building wall then increases with increasing wall thickness 11 also too.

The wall element 10 can for example (see 2 ) with mounting devices 21 be provided. These mounting devices 21 may have dowels and screws and nails protruding through the dowels, washers, spreading elements and others. The assembly facilities 21 are in the wall element 10 already provided and integrated before it is attached to the building wall.

In addition, the wall element has 10 other functional elements, for example, clinker straps embedded on the outside 25 which, when attached to a building wall, give the impression of a wall made of complete clinker bricks.

The wall element 10 has on its outside, ie the side that is later in the field of view of an observer, an outer layer 31 , This outer layer 31 For example, it may be a rigid foam layer, for example a layer of polystyrene. In this layer, the mentioned Klinkerriemchen 25 be embedded.

This outer layer 31 can be very complex and have various stages and the like, in particular in the edge region, for example, an intermeshing of mutually adjacent wall elements 10 to allow on a building wall, for example by means of constructions with tongue and groove. To consider is yes that between adjacent wall elements 10 also no moisture penetrate and no cold bridges should arise.

The outer layer 31 can also be up to the building wall adjacent the inner side of the wall element 10 Pass through in sections, so here one-piece sections of the wall element 10 form.

The wall element is on its side adjacent to the building wall by a surface 32a completed. The area 32a is attached to the building facade after installation.

In the in 1 illustrated embodiment is provided that one of the same material as the outer layer 31 formed inner layer 32 facing the building wall. This not lying in the field of view of the observer, because later lying inside the clad wall layer 32 may be provided, inter alia, with the rear ventilation or the relaxation or dehumidifying grooves, projections or other formations. Also those sections of the outer layer 31 which extend to this inner side can be designed accordingly.

Between the outer layer 31 and the inner layer 32 There is a recess in the interior 33 around the outer and inner layers 31 . 32 surrounded, also peripherally encircling, where the two layers 31 . 32 abut each other or are formed so that they intermesh.

In this recess 33 is a vacuum insulation panel 40 arranged. It is also possible in embodiments (not shown) to arrange a plurality of such vacuum insulation panels next to one another or else stepped to one another, if this makes sense for certain reasons.

The core of the vacuum insulation panel 40 may consist in a preferred embodiment of a fumed silica powder and a clouding agent, which are surrounded with a polyester fleece as dust protection. This core is then sealed under vacuum in a high barrier film of multi-metallized film laminate. The high barrier film is laminated on the outside with a protective fabric. Such vacuum insulation panels have an extremely low thermal conductivity. This leads to the fact that a thermal insulation can occur even at a relatively small thickness of the vacuum insulation panel.

As in particular in the 2 sees, is the vacuum insulation board 40 in this embodiment, in a first approximation square or rectangular. Its outline corresponds to the outline of the recess 33 into which she fits exactly. For this purpose has the vacuum insulation board 40 also indentations 41 or also projections or similar deviations from the square or rectangular shape. These indentations 41 or other projections and recesses may take into account that for the assembly facilities 21 or other functional elements of the wall element 10 There is a need for space, the presence of vacuum insulation panels 40 in this area of wall elements 10 with the layers 31 and 32 can be undesirable. Because the vacuum insulation panels 40 in this embodiment are not pierced, making them easier in the recesses 33 can be inserted, their shape can be chosen from the outset so that they are projections and recesses in the form of indentations 41 has, but no undercuts and in particular no perforations.

In another embodiment, not shown, the vacuum insulation panel 40 equipped with through holes in the surface area. These holes can correspond to approximately circular holes. The vacuum insulation panel 40 itself is not affected in terms of the vacuum, because even these holes would be provided all around with Einschweißrändern that keep the vacuum tight.

Both indentations and through holes are perforations of the usually rectangular outer shape of a vacuum insulation board 40 , The vacuum insulation panel 40 is thus not impaired in spite of these breakthroughs in their heat-insulating, created by the vacuum located inside properties.

The wall elements described are therefore multi-layer insulation elements. They are, for example, about 80 mm thick and can be outside with a 14 mm hard burned clinker brick, for example be mechanically welded. The vacuum insulation panel is about 20 mm thick and is thus in a kind of protective body for example, polystyrene.

In order to provide waste elements for non-prepared installation of such wall elements on the construction, you can provide from the outset special wall elements in which the size of the vacuum insulation panel is smaller than in the standard provided wall elements. In tests, it has been found that it is sufficient if in a range of wall elements, only a relatively small number is specially designed so that only about a third of the surface of the wall element occupying vacuum insulation panel adjacent to an edge and to a corner of Wandele Mentes is inserted into the recess and the remaining surface area of the recess is filled by an insert of thermal insulation material, which is easy to cut.

It will also only be required, a single such size to provide for waste elements, as these elements only relatively rarely needed.

at a blank of such a special wall element only needs Be careful not to put in the vacuum insulation board is cut in, the size of these Trim elements from the outside expedient is recorded. Be cutting elements of such small area dimensions needs a blank taking into account the vacuum insulation board is no longer possible, can not occupied by the vacuum insulation panel, so on the opposite side of the wall element lying Area can be used.

Thereby In any case, the vacuum in the vacuum insulation panel non-interfering cutting possibility.

Not shown, but in the 1 and 2 It is easy to imagine another embodiment of the invention. The corresponding wall elements could be provided in two parts. To do this, imagine the layer 31 with the elements that make up the architectural structure, such as the clinker brick 25 , flat or divided into two matching layers before, which can be removed from each other.

you would then be an outer area of the wall element create with the clinker straps, in any number, coloring and variety can be prepared separately and foamed. The entire remaining area of the wall element is on the size matched and to the outer areas suitable uniformly provided. This makes it possible the inner Halves without regard to the color of any Klinkerriemchen in series in large numbers to produce with the vacuum insulation panels while on the other hand, the outer areas each with the clinker brick without consideration for the vacuum insulation panels can be produced. For a given Construction contract are then put together the two halves.

10

wall element

11

Wall thickness

12

length

13

width

21

mounter

25

Thin brick

31

outer layer

32

inner layer

32a

Area, facing the building facade

33

recess

40

vacuum insulating

41

indentation

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3503543 C2 [0003, 0038]
• - WO 2008/017347 A8 [0005]
• - DE 19538277 C2 [0006]
• - DE 10034551 B4 [0007]
• - EP 1496171 B1 [0007]
• - DE 10243299 B4 [0009]
• DE 102007025303 A1 [0009]
• - DE 202005016942 U1 [0010, 0075]
• - EP 1544367 B1 [0012, 0014]
• - DE 10115669 A1 [0016, 0032, 0033]
• - EP 1045079 B1 [0018]
• - DE 60036572 T2 [0018]
• - EP 1493007 B1 [0040]
• DE 102006042426 A1 [0041]

Claims (12)

Wall element for the thermal insulation of building facades, with a layer facing the exterior ( 31 ) and with one of the building facade facing surface ( 32a ), with a recess ( 33 ) between the outer-facing layer ( 31 ) and the building facades facing surface ( 32a ), with mounting devices ( 21 ) for attachment to the building wall, with vacuum insulation elements, in the recess ( 33 ) are inserted, characterized in that the vacuum insulation elements in the form of a vacuum insulation ( 40 ) are formed such that the vacuum insulation panel ( 40 ) is provided with openings or recesses which are completely surrounded by welding edges or at least limited by these, and that these openings associated mounting devices ( 21 ) without the parts used only when attached to the building wall only by the outer layer ( 31 ) and / or the building facade facing surface ( 32a ) and not through the recess ( 33 ) protrude. Wall element according to claim 1, characterized in that also the building facade facing surface ( 32a ) of a layer ( 32 ) is formed of material and the recess ( 33 ) with the inserted vacuum insulation board ( 40 ) between the two layers ( 31 . 32 ) is arranged. Wall element according to claim 1 or 2, characterized in that one or both layers ( 31 . 32 ) consist of polystyrene. Wall element according to claim 2 or 3, characterized in that the building facade facing layer ( 32 ) consists of a Bautenschutzfolie. Wall element according to one of the preceding claims, characterized in that the recess ( 33 ) and the vacuum insulation board ( 40 ) have mutually consistent outlines. Wall element according to claim 5, characterized in that the mounting devices ( 21 ) outside the recess ( 33 ) through the layers ( 31 . 32 ) from the outside of the wall element ( 10 ) to the building facade. Wall element according to claim 6, characterized in that the recess ( 33 ) and the vacuum insulation board ( 40 ) Indentations ( 41 ) or projections or recesses, in order to carry out the mounting devices ( 21 ) through the layers ( 31 . 32 ). Wall element according to one of the preceding claims, characterized in that the vacuum insulation panels ( 40 ) have circumferential flat weld-in edges, and that the vacuum insulation panels ( 40 ) surrounding welding edges from the plane of the vacuum insulation panels ( 40 ) are folded up by 90 ° and at the edges of the recesses ( 33 ) issue. Wall element according to one of the preceding claims, characterized in that the layer facing the outer space ( 31 ) on its outside with architecturally structuring elements ( 25 ), in particular with Klinkerriemchen. Wall element according to claim 9, characterized in that the orientation of the outer space to the recess ( 33 ) adjacent layer ( 32 ) is followed by another layer, which further layer of the layer ( 32 ) is removable and the exterior architecturally structuring elements ( 25 ) wearing. Assortment of several wall elements according to one of the preceding claims, characterized in that a predominant number of the wall elements of the range with recesses ( 33 ) and therein vacuum insulation panels ( 40 ), which occupy more than half, in particular more than three quarters, in particular more than seven-eighths of the surface of the wall element, and that some wall elements of the range with vacuum insulation panels ( 40 ) in the recesses ( 33 ), which occupy less than half, in particular less than one third of the area of the wall element and are arranged eccentrically adjacent to an edge of the wall elements, wherein the recess ( 33 ) adapted thereto is smaller or wherein inserts are provided from a heat-insulating material, in particular from the material of the layer ( 32 ), which does not depend on the vacuum insulation panel ( 40 ) occupied space in the recess ( 33 ) fill out. Method for producing a wall element for the thermal insulation of building facades according to one of the preceding claims, comprising the following steps: molding of one or more layers ( 31 . 32 ) of a foam material, providing the shaped layers ( 33 . 32 ) with mounting devices ( 21 ) and the exterior architecturally structuring elements ( 25 ), Inserting a vacuum insulation panel ( 40 ) with the mounting devices ( 21 ) adapted Durchbre into one between the layers and / or inside the layers ( 31 . 32 ) shaped recess ( 33 ), and closing the vacuum insulation panel ( 40 ) by placing a second layer ( 32 ), a Bautenschutzfolie or by attaching to a building facade.