EP0849420A1 - Thermal insulated curtain wall - Google Patents

Abstract

The cladding (17) of a building shell is attached to a sub-structure (11) e.g. of steel sections or brick by fastenings and the space between the cladding and the sub-structure is filled by thermal insulation (15) in a single layer which covers both the space between the fastening strips(25,27) and the strips themselves. The fastening strip may be formed by flanging the cladding to form a sheet cassette (13). The flanges may be shaped, e.g. with a corrugation, so that cassettes fit precisely to each other. The insulation panel may have a pressure distribution layer (49) on its outside.

Description

The present invention relates to a building envelope a substructure, with it arranged Sheet metal profiles, at a selectable distance from Substructure and spaced apart Fastening bars for clothing, with a room behind the fastening webs and one Fastening bars covering thermal insulation, and with a through the covering thermal insulation Fasteners attached to the mounting bars Clothing. The invention also relates to a kit, at least consisting of a sheet profile with a Fastening web and one matched to the sheet metal profile Insulation board.

Building envelopes of the type mentioned above can be used as Substructure closed walls or walls or in Support elements arranged at a distance from one another, e.g. Steel supports. Depending on this, Z profiles are used or sheet metal cassettes, which fastening webs for have clothing. Often there are also different ones such building envelopes applied side by side to the same building, expediently substructure and sheet metal profile different, but the insulation and the clothing are the same.

Cassette walls of the type mentioned above, for example So far insulated as follows: In the depth of the Metal cassettes become soft mineral fiber insulation boards filled. These clamp behind the fastening webs. It is then pressure-resistant using special fastening elements Mineral fiber insulation panels installed. These fasteners through the outer layer of insulation into the inner Insulation layer rotated and hold these two layers together. The clothing is mounted over and with Fasteners screwed to the fastening webs or riveted. When using Z profiles on one the insulation boards are closed filled between the Z-profiles and mostly in between attached to the wall. Then the pressure-resistant insulation panels also laid over the fastening webs and on the insulation panels arranged underneath.

A disadvantage of such a building envelope is that outer, pressure-resistant insulation panels in a separate Work step attached with special fasteners must be and also e.g. when attaching the clothing or be detached from the ground by the wind. The surface must also be made of thicker plates than for the Insulation necessary exist so that the Fasteners find some hold in it. To comes that the joints between the outer, mostly thin Insulation boards when using non-qualified personnel like to be encountered with insufficient accuracy.

It is therefore an object of the invention to provide a building envelope To create genus in which neither different Insulation layers must be connected to each other, still the outermost insulation layer due to loads from the weather or Construction work from the subsoil, and the butt joints between the insulation boards even when not using trained workers are clean.

According to the invention this is achieved in that the Thermal insulation is formed by a single layer of insulation, which both fills the space behind the mounting bars as well as the fastening webs covered. Accordingly thermal insulation does not consist of two layers of Insulation boards, making neither two layers together one layer from the other still has to be connected can solve. The fastening web is expedient by a flank of a Z-profile or by a bevel formed on a cassette. Introducing the Thermal insulation panels in the cassette or between the Z profiles is very easy because the cassettes or the Z-profiles determine the position of the insulation boards. Although basically any type of insulation, e.g. Foam plastic, Wood fiber boards, coconut mats or wool mats etc. for one insulation layer according to the invention can be used mineral fiber insulation, especially one Rock wool insulation board preferred. This shows excellent Processing, insulation, recycling, fire protection and Noise protection properties, is to a suitable extent can be pressed and can be proportionate with a low density absorb high pressures. She is especially with one Two-layer characteristics can be produced.

The fingers between two neighboring insulation boards in the same cassette or between the same Z-profiles can during assembly by colliding the panels to be pushed cleanly. The tightness of the joint between two neighboring insulation boards in different However, a cassette or a Z-profile on both sides is dependent on the mounting accuracy of the sheet metal profiles. So the fingers between adjacent insulation boards in two different Cassettes with a through a fold in the cassette formed fastening web are tight, has the fold advantageous a formation on which after precise assembly Adjacent cartridges are engaged with the adjacent one Cassette is. To get the cassettes right on the This form is to be able to mount the substructure to engage with the adjacent cassette. Thereby the cassettes are consistently precisely assembled and the Spacing between the mounting bars is certain constant. Therefore, when using such cartridges, the Butt joints of insulation boards matched to the cassettes not leaking. If the fastening web by folding a first cassette and one with this fold cooperating fold a second adjacent cassette is formed, advantageously have both Bends each have an inward bead, whereby the bead in the one edge engages with the bead in the other edge is. Thanks to these beads Precision when joining the cassettes can be checked easily. The fasteners in the bead are advantageous moored, which stiffened the fastening web. Since the Beading facing inwards will be a drill or one Screw passed through the edge of the bead into the bead what vertical drilling or screwing makes it easier and easier Slipping largely prevented.

For example, by cutting out corresponding profiles the insulation layer can be made from a wide panel forming insulation board are shaped such that on a Side of the plate covering the fastening web Plate part and on the other side the space behind the Fastening web filling plate part protrudes. However, an insulation board is preferred, which one Has incision to accommodate the mounting web. This means that the outer edges are flush and therefore less vulnerable. In addition, the manufacture of such Plate very simple.

In the case of a building envelope with one on the thermal insulation layer overlying clothing or clothing holder has the Insulation layer on the outside advantageously one Pressure distribution layer on. This ensures that the over the fasteners exerted local force in the Insulation distributed and smaller in the soft part of the insulation local forces occur which are absorbed by the insulation can be.

The insulation layer is advantageous in the area of Fasteners between clothing or Garment holder and fastening web pressure-resistant to the Main part of the forces occurring on the fastening web to deliver. This can be achieved, for example, by that a pressure-resistant sub-layer in the area of Fasteners in a recess in the insulation board is introduced or that a pressure-resistant strip with a Incision for the fastening web on the side with a soft insulation board is connected. However, the Insulation board a soft inner and a pressure-resistant outer Layer on, the pressure-resistant outer layer being so thick is that they have the space between the inside of the clothing or clothing holder and the fastening web. Such a plate can be in on a corresponding machine be made from rock wool in one operation, so that the pressure-resistant outer layer and the soft inner one Partial layer are matted together. This matting resists strong attacks by wind and rain without that parts of the plate would come off.

The insulation layer advantageously only points in the areas around the fasteners and is a pressure-resistant layer between these areas soft in all their strength educated. For example, since only every third web or every third flank serves to fasten the clothing only with every third cassette an insulation board pressure-resistant outer partial layer can be used. Therefore can, for example, two thirds cheaper soft Plates are used.

The fasteners advantageously have for clothing or clothing holder on a shaft, which in its Length to the thickness of those covering the fastening webs Insulation layer is matched so that the covering Insulation in one by the length of the shaft Fasteners are pressed to a certain extent. Thereby the insulation layer becomes uniform and can be predetermined Dimensionally pressed, i.e. the on the fastener or the Garment element and the fastening web acting force determinable.

If also rivets for fastening the clothing application can find, so are the fasteners advantageous self-drilling screws with a Screw-in depth limiting termination of the thread. Self-drilling screws have the advantage that they don't must be pre-drilled and the screw depth limiting thread closure prevents overtightening and thereby pulling out the screw or deforming the Clothing.

In the construction kit according to the invention, which is at least one Sheet metal profile with a fastening web, and one on the The strength is the matching insulation board the insulation board is greater than the distance between Fastening web and a surface of the profile to rest on the substructure, so that the insulation board after the Assembly covered the fastening web. Hence the Layer part, which covers the fastening web, in same operation with the the room behind the Fastening web filling layer part introduced. Compared to the prior art mentioned above this saves both labor and precision the butt joints increased. The precise pushing of the joints works beneficial to heat and noise protection and, especially during the construction phase, on the wind and Rainproofness of the insulation layer.

Although the insulation board also on one edge of the outer Layer a recess and on the opposite edge the outer layer the dimensions of the cutout could have a corresponding projection, so that the Projection over the fastening web into the recess of the neighboring insulation board would grip, becomes an insulation board preferred, which has a lateral incision to to take up the fastening bridge. Such an incision is very easy to manufacture, the plate has the smaller ones Dimensions on and the side buttocks and edges the plate are less vulnerable.

Advantageously, the insulation board also has one in the modular system softer inner layer and a firmer outer layer. The firmer outer layer can be a Pressure distribution layer with a smaller thickness than the cover the fastening webs, the entire thickness of the covering make up to the fastening webs or even thicker be.

Part of the insulation boards advantageously has a firmer one outer layer, leaving the other insulation boards soft are. As a result, some of the insulation boards can lose weight be saved, which is reflected in the price.

In the case of cassettes which have a bend to form a Have fastening web, this fold has Advantageously, a shape to order after precise assembly Adjacent cartridges are engaged with the adjacent one Cassette to be. If the cassette two when assembling several cassettes with the folds of the neighboring ones Cassette has cooperating bends, these have advantageously one bead each, the bead in one Bend in the bead in the other fold of a precise adjoining adjacent cassette fits.

Such a kit is also advantageous Fasteners for clothing or Garment holder from which fasteners one in its length to the strength of the mounting bars have a matching shaft, so that when attaching the fasteners the covering insulation layer part in one by the length of the shaft the fastening means is pressed to a certain extent. These fasteners are advantageously self-drilling Screws with a screw-in depth limit Completion of the screw thread.

Fig. 1

einen Vertikalschnitt durch eine erfindungsgemässe Kassettenwand mit herkömmlicher Kassette und einer Dämmschicht mit einem bis auf die Befestigungsstege reichenden druckfesten äusseren Schichtteil,

Fig. 2

einen Vertikalschnitt durch eine Kassettenwand mit verbesserten Kassetten und einer Dämmschicht mit Druckverteilschicht und Schrauben mit einem auf die die Befestigungsstege überdeckende Dämmschichtstärke abgestimmten Schaftlänge,

Fig. 3

einen Vertikalschnitt durch eine erfindngsgemässe Gebäudehülle mit Z-Profilen.

An exemplary embodiment of the invention is described below with reference to the figures. It shows:

Fig. 1

3 shows a vertical section through a cassette wall according to the invention with a conventional cassette and an insulation layer with a pressure-resistant outer layer part extending to the fastening webs,

Fig. 2

a vertical section through a cassette wall with improved cassettes and an insulation layer with pressure distribution layer and screws with a shaft length matched to the insulation layer thickness covering the fastening webs,

Fig. 3

a vertical section through an inventive building envelope with Z-profiles.

The cassette wall in FIG. 1 consists of a substructure 11, to which the conventional cassettes 13 are attached, the the cassettes 13 filling insulation 15 and one to the Cassettes 13 attached outer skin or clothing 17. The Substructure 11 is in the example shown Steel profile stand. There are also other substructures applicable, e.g. Wooden stand and brick or cast Walls.

The cassettes 13 are C-shaped, i.e. they own one Back 19, which rests on the base 11, a lower and an upper shelf 21, or 23 and parallel to each to the back 19 a flank or a bevel 25 or 27. The back 19 is made at different heights, so that the distance between the flanges 21 and 23 is smaller or bigger. Depending on the height of the back 19 is like marked a single bead 29 parallel to the Flares 21, 23 or are two or three beads The plate is stiffened. The conventional heights the cassettes are 333, 500 and 600 millimeters. Also the Borders 21 and 23 have beads 31 and 33, respectively. These beads 31,33 are not only for stiffening the Tins. Since they are both shaped downwards, they grip when stacking the cassettes into each other and thereby stabilize the two adjacent cassettes 13 and align them with each other.

The rims 21, 23 determine the depth of the cassette 13 and are in depending on the desired thickness of the insulation different depths. The upper shelf 23 is shorter by the sheet thickness than the lower flange 21, so that the lower 21 can reach over the upper 23 and the backs 19 of adjacent cassettes 13 are flush.

The bevels 25 and 27 are both directed downwards. As a result, rainwater accumulates during construction Cassettes out and does not stay in a gutter. At the assembly of the outer skin 17, the two bevels 25, 27 at the fastening points 35 of the outer skin 17 connected with each other.

The cassette 13 is with an insulation board 15 made of rock wool filled. The insulation board 15 fills the space between the back 19 and innermost surface 37 of the outer skin 17. It covers with the outer layer part 39, the fastening webs 25, 27. The inner layer portion 41 has one of the depth of the cassette 13 appropriate strength and is behind the folds 25,27 clamped, which together a fastening web form. The two layer parts 41 and 39 are by one Notch 43 separated. In the incision 43 takes place the fastening web or find the two bevels 25, 27 place. During assembly, the plates 15 are inclined inserted into the bottom of the cassette and the inner layer part 41 pushed behind the bends 25,27. The Bends 25, 27 in the incision 43 and the exterior Layer part 39 covers the folds 25, 27. The joints 45 matted and are between the outer layer parts 39 thereby tight. Since the mineral fiber insulation boards 15 are compressible, the inner layer part 41 adapts Cassette 13 very well and fills it. The necessary Differences in dimensions of the insulation inside 41 and outside Layer part 39 due to the overlays 21, 23, which are only in the are present, the plate 15 easily takes on. The insulation board 15 has a two-layer characteristic on. The inner layer 47, which is not exactly the inner Layer part 41 must correspond to the insulation layer 15 light and soft. The pressure-resistant outer layer 49 can be thicker (or thinner as shown in Figure 2) than the outer Layer part 39 of the insulation layer 15.

The clothing, roof or outer skin 17 is from the outside Stainless steel screws 51 with washer through the outside Layer part 39 through the fastening web 25, 27 screwed tight. Are in another version Clothing mounts attached in this way and the Clothing attached to this. The flameproof Outer layer 49 takes those that occur during screwing Pressure forces and gives them to the two as a fastening web cooperating folds 25,27 further. The outer skin 17 consists of vertically or diagonally laid sheet metal sheets. It is also possible, the cassettes 13, vertical and the Arrange clothing 17 horizontally. There is also the Possibility of intermediate battens for rear ventilation of the Clothing or outer skin 17.

In Figure 2, the cassettes 13 'in contrast to the Cassettes 13 in Figure 1 in the borders 21 ', 23' none Beads on. This simplifies production. In contrast, in the folds 25 'and 27', which together form the Form fastening web, beads 53 and 55 arranged. This Beads 53.55 grip when the cassettes 13 'are correctly installed into each other. This ensures a constant mounting distance of Cassette to cassette ensured. The beads 53 and 55 are sunk inwards so that the screw 51 'through the bead edges 56 is centered. The thread 57 of the Screw 51 'forms a counter thread when screwing in the sheet of the bends 25 ', 27' and at most in the Bead edges 56.

The thread 57 of the stainless steel screw 51 'ends before one Shaft 59, which has a diameter that is not is larger than the diameter of the thread core. It is also possible that only one connecting to the thread 57 Area has this diameter and the shaft 59 itself is thicker. This limits the screw-in depth and the Screw 51 'turns empty as soon as the thread 57 through the Sheet of the folds 25 ', 27' is screwed through. The Thread 57 holds at the opening edge behind that around the shaft 59 subsequent opening in the sheet. The shaft 59 widens the Do not open the opening in the sheet any further. One screwed in like this Screw 51 'loosens through the movements and Shocks to clothing no longer work automatically because the external thread 57 of the screw 51 'no longer in through it shaped internal thread sits in the sheet. Under tension on the However, screw 51 'can be unscrewed again. A Torque limitation for the screwdrivers for tightening the Such a limitation of screws 51 ' Screw-in depth is no longer necessary. The screws 51 'are constantly tightened equally and the insulation 15 'constant equally pressed.

The insulation 15 'in turn has a pressure-resistant layer 49' which, in contrast to the insulation 15 in FIG. 1, is thinner is the one covering the fastening webs (25 ', 27') Insulation layer part 39 '. The soft inner layer 47 'is correspondingly thicker than the depth of the cassettes 13 '. This is possible because the tensile force of screw 51 ' built pressure force on the thermal insulation 15 'thanks to the firmer pressure distribution layer 49 'in the insulation layer 15' is distributed so that the resulting pressures from the softer inner layer 47 'can be added.

In Figure 3, a wall is shown in vertical section, at which the substructure 61 consists of concrete. Thereon Z profiles 63 are attached. One edge 65 of the Z profiles 63 is attached to the wall 61, the other flank 67 serves as fastening bridge 67 for clothing 17. For the Attachment of the clothing 17 are stainless steel screws 51 ' with sealing washers inserted with a screw-in depth limiting thread termination and a shaft 59, the Length to the thickness of the fastening webs 67 covering insulating layer part is coordinated. alternative to The examples in Figures 1 and 2 are not in Figure 3 same insulation boards used throughout. Because the Z profiles 63 are only provided at intervals at which one Attachment of clothing 17 is necessary (on the construction usually between 150 and 200 cm) in between several plates. In the field of Fastening webs 67, an insulation board 69 is arranged, which is denser and heavier than the insulation boards 71 between. The insulation board 69 has a slot 43 Inclusion of the fastening web 67 and is pressure-resistant trained, i.e. it transfers the pressure forces from the Clothing 17 on the mounting web 67 and thus on the Z-profile 63. The insulation boards 71 therefore do not have to pressure can record and are therefore as light as possible educated.

So that the insulation boards 69.71 in the construction phase until assembly the clothing 17 remain in place, they are with glue 73 glued to the wall 61.

Claims (19)

Building envelope with a substructure, with it arranged sheet metal profiles, which in a selectable Distance to the substructure and a distance from each other arranged fastening webs for clothing have a space behind the Filling webs filling and one of the Fastening webs covering thermal insulation, and with one through the overlapping thermal insulation Fasteners attached to the mounting bars Clothing, characterized in that the thermal insulation formed by a single layer of insulation (15; 15 '; 69.71) which is both the space behind the mounting bars (25,27; 25'27 '; 67) also fills in the fastening webs (25,27; 25'27 '; 67) covered. Building envelope according to claim 1, characterized in that that the fastening web by a flank (67) of a Z-profile (63) is formed. Building envelope according to claim 1, characterized in that that the fastening web by a bend (25,27; 25'27 ') of a sheet metal cassette (13,13') is formed. Building envelope according to claim 3, characterized in that the fold (25 ', 27') is a formation (53,55) which, after precise assembly of neighboring Cassettes (13 ') engage the adjacent cassette (13 '). Building envelope according to claim 4, wherein the Fastening web by a fold (25 ') of a first Cassette (13 ') and one with this bevel (25') interacting fold (27 ') of a second adjacent cassette (13 ') is formed, thereby characterized in that both folds (25 ', 27') each one have inwardly directed bead (53, 55), the Bead (53) in the one bend (25 ') in engagement with the bead (55) in the other fold (27 '). Building envelope according to one of claims 1 to 5, characterized characterized in that a layer forming the insulation Insulation board (15, 15 ') has an incision (43) to to accommodate the fastening web (25, 27; 25 ', 27') in it. Building envelope according to one of claims 1 to 6 with a clothing lying on the thermal insulation layer or Garment holder, characterized in that a the insulation layer forming the insulation layer (15, 15 ') on her Has a pressure distribution layer (49, 49 ') on the outside. Building envelope according to one of claims 1 to 7, characterized characterized in that the insulation layer (15, 69) in the area the fastening means (51, 51 ') between clothing (17) or clothing holder and fastening web (25, 27; 67) is pressure-resistant. Building envelope according to claim 7 or 8, characterized characterized in that the insulation layer (71,69) only in the areas around the fastening means (51 ') has pressure-resistant shaft (69) and between them Areas in their entire strength is soft. Building envelope according to one of claims 1 to 9, characterized characterized in that the fastening means (51 ') for the Clothing (17) or clothing holder one in his Length on the strength of the attachment bars covering insulating layer (39 ', 39' ') coordinated shaft (59), so that the covering insulation layer (39 ', 39' ') in one by the shaft length of the Fastening means (51, 51 ') of certain dimensions are pressed is. Building envelope according to claim 10, characterized in that the fasteners are self-drilling screws (51 ') with a screw-in depth limit Completion of the thread (57). Construction kit, at least consisting of a metal profile (13; 13 '; 63) with a fastening web (25,27; 25', 27 '; 67) and one matched to the metal profile (13; 13 '; 63) Insulation board (15; 15 '; 69.71), characterized in that the thickness of the insulation board (15; 15 '; 69.71) greater than that Distance between the fastening web (25, 27; 25 ', 27'; 67) and an area (19; 65) to rest on the Substructure (11; 11 '; 61), so that the insulation board (15; 15 '; 69.71) after mounting the fastening web (25,27; 25 ', 27'; 67) covered. Construction kit according to claim 12, characterized in that the insulation board (15; 15 '; 69) has a side incision (43) around the fastening web (25, 27; 25 ', 27'; 67) to record. Construction kit according to claim 12 or 13, characterized characterized in that the insulation board (15; 15 ') a soft inner layer (47; 47 ') and a firmer outer layer (49; 49 '). Construction kit according to one of claims 12 to 14, characterized characterized in that part of the insulation boards (69) a has a firmer outer layer, and the others Insulation boards (71) are soft. Kit according to one of claims 12 to 15 with Cassettes, which are folded to form a Have fastening web, characterized, that the fold (25, 27; 25 ', 27') is a formation (53.55) to adjacent after precise assembly Cassettes (13, 13 ') engage the neighboring one Cassette (13, 13 '). Construction kit according to claim 16, wherein the cassette two at Assembling multiple cartridges interacting Has bends (25 ', 27'), characterized in that that the folds (25 ', 27') each have a bead (53,55) have, the bead (53) in the one bend (25 ') in the bead (55) in the other bend (27') a precisely fitted adjacent cassette (13 '). Construction kit according to claim 12 to 17, characterized by Fastening means (51 ') for clothing (17) or Garment holder, which fasteners (51 ') one in length to the strength of the Fastening webs (25 ', 27', 67) covering Insulated layer part (39 ', 39' ') matched shaft (59) have so that when attaching the fasteners (51 ') the covering insulating layer part (39', 39 '') in one due to the shaft length of the fastening means (51 ') certain extent is pressed. Construction kit according to claim 18, characterized in that the fastening means self-drilling screws (51 ') a termination of the Screw thread (57) are.

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