EP2766535B1 - Device for producing thick insulation - Google Patents

Description

The method described applies to the realization of insulation from the outside of works generally for housing, offices & industrial buildings that must be maintained at an approximately constant temperature. In the environmental context of the New Thermal Regulations 2020 which impose the construction of "passive" buildings, and the cost of energy in the future, it is essential that buildings that are operated with the constraint of a practically constant temperature are d on the one hand perfectly isolated and on the other hand enjoy a high thermal inertia.

• le prix de la construction est sensiblement proportionnel à la surface projetée sur un plan horizontal du bâtiment à construire (SHON).
• Le prix de vente est proportionnel à la surface habitable (ou surface balayable).
• La marge se caractérise par la différence entre ces 2 prix.

To achieve an insulation of high thermal resistance under a minimum thickness, there is no alternative to reporting on the structure an insulator whose thickness will be a function of the λ (thermal conductivity in W / m ° C) of the chosen insulation and the thermal resistance targeted for the structure. The insulation can be placed either inside the housing or outside and sometimes on both sides (inside & outside). In contrast to the solution of the external insulation, the insulation placed inside deprives the building of its thermal inertia, presents difficulties to annihilate the harmful effects of the thermal bridges at the level of the junctions floors & splits with the external walls, and leads to a significant hold on the living space. With regard to this last drawback, it is important to remark economically that:

• the price of construction is substantially proportional to the projected area on a horizontal plane of the building to be constructed (SHON).
• The selling price is proportional to the living area (or sweeping area).
• The margin is characterized by the difference between these two prices.

In the case of an insulation reported inside the housing the sweeping surface is equal to the SHON deduction made of the perimeter that multiplies the thickness of the external structural walls to which it is necessary to add the thickness of the insulation.

The person skilled in the art thus easily understands that with an equal thickness of insulation, the solution of the insulation placed on the outside leads either to an increase in the margin or to a margin equal to a reduction in the price.

To achieve an external thermal insulation that meets the NRT 2020, it is necessary to install on the structure a thermal insulation of 20 to 30 cm minimum. This insulating complex must generally be covered by a finishing layer (varnish thickness, stone or wood). The weight of this facing (between 75 and 125 kg / m ² ) must be transmitted to the supporting structure. It is very easily understood that the greater the thickness of the insulation, the higher the moment, and therefore this connection is difficult to achieve. For insulations smaller than 10 cm it is traditionally possible to directly fix the insulation on the structure by means of pegged nails which have a bridge breaking device. On the other hand, for insulations greater than this value of 10 cm, the value of the moment, and therefore of the forces to be resumed, is high, which leads to expensive and unsustainable implementations because of the increased risks of creep of the fastenings under forces. high.

Traditionally, to meet these requirements, companies perform this function after the construction of the outer sails. Following this procedure, the workers proceed on site to the laying of brackets (5 / m ² ) pegged (4 pegs / square) on the outer sails. The dimension of the wings of these fasteners is much greater than the thickness of the insulation. The said brackets perforate the insulation which is itself locked by a device, wood or metal, itself fixed on the brackets. The siding (cladding, plaster or stone) is then attached to these locks.

These traditional technologies built on site are long and expensive. Furthermore, the reported fasteners are not durable because subject to creep phenomenon which leads in time to disorders due to the stalling of the facings. Traditional devices for forming an insulating volume are known from US 3,407,560 A1 and FR 2 800 112 A1 . A prefabrication technology is known in the wood industry. Between stiffeners that connect the outer and inner faces of walls in contact with the outside, companies have a thermal insulation of a thickness of 20 to 30 cm. This provision perfectly meets the regulations on the thermal resistance of the outer walls, but with no or very little thermal inertia, it only affects the temperature of the indoor air and therefore does not meet the basic concept comfort. In addition, it leads to the transport of large volumes that induce excessive consumption of gray energy.

Finally, there is another drawback related to the lifetime (30 years on average) of insulation traditionally used. Whether installed outdoors, and especially indoors, their replacement leads to work affecting not only the insulation but also the decorative siding. These works represent a significant cost and inconvenience for the occupants.

• Pas de mise en oeuvre sur le chantier grâce à un système de préfabrication dont le transport est assuré replié afin de limiter au maximum le volume des vides transportés,
• Inertie thermique interne à l'enveloppe habitable,
• Assurer la possibilité de remplacement des isolants sans destruction des parements.

The device below claimed makes it possible to overcome particularly the following drawbacks:

• No implementation on site thanks to a prefabrication system whose transport is ensured folded in order to limit as much as possible the volume of the transported voids,
• Thermal inertia internal to the habitable envelope,
• Ensure the possibility of replacement of insulation without destruction of siding.

• Les figures 1a, 1b, 1c de la planche 1 sont des représentations schématiques du dispositif replié, en cours de déploiement et déplié ;
• Les figures 2a à 2d de la planche 2 sont des représentations schématiques du dispositif monté sur un mur existant (neuf ou ancien) :
  • Les figures 2a, 2b, représentent le dispositif en position repliée respectivement sur une vue en coupe et en perspective ;
  • Les figures 2c & 2d représentent le dispositif en position dépliée respectivement sur une vue en coupe et en perspective.
• Les figures 3a à 3g de la planche 3 représentent schématiquement les sous-ensembles qui assemblés constitueront le dispositif revendiqué
  • La figure 3a est une représentation schématique du dispositif de rotation extérieur {1}
  • La figure 3b représente en perspective le dit dispositif {1}
  • La figure 3c est une représentation schématique de la suspente à rupture de joint repliable {2}
  • La figure 3d est une représentation schématique de la suspente tridimensionnelle 3
  • La figure 3e est un détail qui définit le profil des suspentes
  • La figure 3f est une représentation schématique de la suspente tridimensionnelle articulée 4
  • La figure 3g est une représentation schématique des sous-ensembles assemblés sur la barre de liaison au mur à isoler
• Les figures 4a à 4c représentent schématiquement le dispositif sur un voile neuf réalisé selon la technologie de coffrage filtrant objet du brevet FR 2 800 112 B1 inventeur DURAND.
• Les figures 5a à 5f représentent les différentes phases de mise en oeuvre du dispositif revendiqué.
• Les figures 6a & 6b montrent le principe de remplacement de l'isolant ancien.

The device according to the invention, defined by claims 1 to 8, will be better understood by the descriptions supported in the following figures. It is obviously that the technological descriptions are given as a non-limiting example. These descriptions are given with reference to the appended drawings in which:

• The Figures 1a, 1b, 1c of the plate 1 are schematic representations of the folded device, being deployed and unfolded;
• The Figures 2a to 2d of plate 2 are schematic representations of the device mounted on an existing wall (new or old):
  • The Figures 2a, 2b , represent the device in the folded position respectively in a sectional view and in perspective;
  • The Figures 2c & 2d represent the device in unfolded position respectively in a sectional view and in perspective.
• The Figures 3a to 3g of plate 3 schematically represent the assembling sub-assemblies will constitute the claimed device
  • The figure 3a is a schematic representation of the external rotation device {1}
  • The figure 3b represents in perspective the said device {1}
  • The figure 3c is a diagrammatic representation of the folding joint suspension line {2}
  • The figure 3d is a schematic representation of the three-dimensional hanger 3
  • The figure 3e is a detail that defines the profile of the lines
  • The figure 3f is a schematic representation of the articulated three-dimensional hanger 4
  • The figure 3g is a schematic representation of the subsets assembled on the wall connecting bar to be insulated
• The Figures 4a to 4c schematically represent the device on a new veil made according to the filtering formwork technology object of the patent FR 2 800 112 B1 inventor DURAND.
• The Figures 5a to 5f represent the different phases of implementation of the claimed device.
• The Figures 6a & 6b show the principle of replacing the old insulation.

In what follows, for simplification, the description made from a thick insulation according to the claimed principle is described arranged on a previously patented process (patent FR 2 800 112 B1 inventor DURAND). It is common ground that the claimed device is applicable to other traditional methods for constructing new buildings or insulating old structures.

• Figure 1a en position fermée qui est la position de stockage et de transport.
• Figure 1b en position en cours d'ouverture
• Figure 1c en position totalement ouverte.

Plate 1 represents a basic example of the principle of the device in the different positions:

• Figure 1a in the closed position which is the storage and transport position.
• Figure 1b in position during opening
• Figure 1c in fully open position.

• les sous-ensembles {1}, dont la description sera effectuée plus amplement pour la planche 3a. Le sous-ensemble {1} comporte deux alésages parallèles dont les axes sont coïncidents avec ceux des axes de rotation 3a & 4a des suspentes tridimensionnelles 3 et suspentes tridimensionnelles articulées 4.
• Les suspentes 3 & 4 possèdent des axes de rotation 3b & 4b parallèles aux axes 3a & 4a précités.
• Une suspente articulée à rupture de pont {2}, qui possède 2 axes de rotation parallèles 2a & 2b. L'axe 2a est coïncident avec l'axe 4b.
• Un support d'accrochage 5 muni d'alésages à axes 5a & 5b parallèles et coïncidents avec les axes 3b & 2b précités
• Le mur 6 devant recevoir l'isolation de grande épaisseur par fixation rigide des pièces 5

In the above figures and particularly in the figure 1c we distinguish :

• subsets {1}, the description of which will be made more fully for Plate 3a. The subassembly {1} comprises two parallel bores whose axes are coincident with those of the axes of rotation 3a & 4a of the three-dimensional hoists 3 and articulated three-dimensional hoists 4.
• The lines 3 & 4 have rotation axes 3b and 4b parallel to the aforementioned axes 3a & 4a.
• An articulated suspension link {2}, which has 2 parallel axes of rotation 2a & 2b. The axis 2a is coincident with the axis 4b.
• An attachment support 5 provided with bores 5a and 5b axes parallel and coincident with the aforementioned axes 3b & 2b
• The wall 6 to receive the insulation of great thickness by rigid fixing of the pieces 5

• les distances entre les axes 2a-2b des pièces 2 & les axes 4a- 4b des pièces 4 sont identiques ;
• Cette distance est par ailleurs égale à la moitié de la distance entre les axes 3a-3b;
• La distance entre les axes 5a-5b est au moins inférieure à la somme des distances des axes 3a-3b augmentée de la longueur « L1 » (distance de 3a à 4a) de la pièce {1} ;
• Préférentiellement, afin que l'effet tridimensionnel soit optimum, les suspentes 2, 4 & 3 dépliées présenteront un angle aussi proche que possible de 45° avec le plan horizontal. Cette condition complémentaire souhaitable fixe la distance optimale des axes 5a-5b.

In order to allow the folding of the whole, a certain number of relations are imperative:

• the distances between the axes 2a-2b of the parts 2 & the axes 4a-4b of the parts 4 are identical;
• This distance is also equal to half the distance between the axes 3a-3b;
• The distance between the axes 5a-5b is at least less than the sum of the distances of the axes 3a-3b increased by the length "L1" (distance 3a to 4a) of the workpiece {1};
• Preferably, so that the three-dimensional effect is optimum, the lines 2, 4 & 3 unfolded will have an angle as close as possible to 45 ° with the horizontal plane. This desirable additional condition sets the optimum distance from the axes 5a-5b.

• Bien que pouvant dégager un volume de grande épaisseur destiné à recevoir un isolant non lié voire pulvérulent, le volume stocké et transporté est minimum ;
• En position dépliée, la structure constituée par les suspentes {3} & {4} d'une part et {2} d'autre part, situé dans des plans sécants et préférentiellement inclinés approximativement à 45° par rapport à l'horizontal, réalise une structure tridimensionnelle.

This collapsible layout has 2 main advantages:

• Although able to release a large volume intended to receive an unbound insulation or powder, the volume stored and transported is minimum;
• In unfolded position, the structure constituted by the lines {3} & {4} on the one hand and {2} on the other hand, located in secant planes and preferably inclined approximately at 45 ° with respect to the horizontal, realizes a three-dimensional structure.

In the example shown on plate 2, the device {0} described above is disposed on a structure to be insulated from the outside with a large thickness. In the case of a wall or wall 6 already made, the fixing is done by known means of the hanger bracket 5 on the wall 6. In the case of wall 6 nine made by the system object of the patent FR 2 800 112 B1 , fixing is, as will be described and shown in plate 4, through the latches 7 arranged in the loops of the hoops. On the Figures 2a in section and 2b in perspective, the device is shown in the closed position. This position corresponds to the first phase of installation.

On the Figures 2c in section and 2d in perspective, the device is shown in the open position. This position corresponds to the second phase of installation. Once filled with insulation, volume 16 protects the entire structure including thermal bridges at exterior wall connections 6, upper floor 6a, lower floor 6b and shear 6c

• Sur la figure 3a le sous-ensemble bloc extérieur {1} est schématisé. Le dit sous-ensemble est constitué de :
  • ∘ Un bloc de serrage extérieur 8a en matière isolante (par exemple Polyuréthane) muni de deux alésages à axes parallèles la & 1b qui sont coïncidents respectivement avec les axes 3a & 4a. Le bloc de serrage extérieur 8a comprend un pied préférentiellement cylindrique sur lequel est disposé un trou d'axe 8g disposé parallèlement aux axes la &1b. le dit bloc de serrage extérieur 8a comporte également un logement 8f destiné à recevoir un joint d'étanchéité 8h. Afin de répondre aux règlements incendie, le bloc de serrage extérieur 8a est préférentiellement armé par un crochet de sécurité 8c en matière résistant au feu (par exemple acier) ;
  • ∘ Une entretoise lame d'air 8b coaxiale avec l'axe principal du bloc de serrage extérieur 8a. Cette pièce 8b est préférentiellement en matière qui présente une résistance thermique élevée (PVC ou autre par exemple). Enfin sur la face d'appui extérieure la pièce 8b comporte des rainures destinées à renforcer l'étanchéité au niveau de l'appui sur le film d'étanchéité 10. La hauteur de l'entretoise 8b sera choisie de façon à maintenir une distance entre le film d'étanchéité de l'isolant 19 et le film d'étanchéité 10 extérieur de valeur au moins égale à l'épaisseur de la lame d'air réglementaire 14 (en général 2 cm) ;
  • ∘ Un crochet de sécurité 8c incorporé à la fabrication, en général injecté. Le dit crochet 8c entoure les axes des alésages la & 1b. Cette disposition permet d'assurer une fixation de sécurité du parement extérieur en cas de destruction des parties sensibles au feu par exemple de la pièce {8} et sécurise l'intervention du personnel d'incendie ;
  • ∘ Bien que facultatif mais préférable, un joint d'étanchéité 8d extérieur à la lame d'air. Ce joint est serré entre la pièce {8} et le film d'étanchéité extérieur 10. Le rôle du dit joint 8d est d'éviter toute pénétration d'eau à l'intérieur de la lame d'air ;
  • ∘ Un organe de serrage 8e. La fonction de serrage de cet organe 8e peut par exemple être réalisée comme représenté par un excentrique dont l'axe de rotation est coïncident avec l'axe 8g. Cet axe d'excentrique sera en matière qui présente une résistance au feu élevée. Ainsi, en cas d'incendie, le parement sera relié à la structure par des éléments présentant une résistance au feu qui laissera aux services de sécurité le temps d'intervention sans risque de chute du parement ;
  • ∘ Une paroi coffrante d'isolant 9. La dite paroi 9 est destinée à confiner l'isolant à l'intérieur du volume isolant 16. La paroi 9 est filtrante et autorise sans dégradation le passage des condensats du volume isolant 16 dans la lame d'air 14.
  • ∘ Un film extérieur d'étanchéité 10. Les rôles du dit film sont :
    • ▪ d'interdire, ou pour le moins de limiter la pénétration des eaux de ruissellement sur le parement extérieur
    • ▪ Servir de support de projection en cas de parement extérieur projeté.
  • ∘ Une grille 11 qui constituera une armature (en acier galvanisé ou composite) pour les parements extérieurs projetés.
• La figure 3b représente un exemple de réalisation de l'excentrique 8e. Le dit excentrique a son axe de rotation coïncident avec l'alésage 8g de la pièce de serrage 8a
• Sur la figure 3c est schématisé un sous-ensemble {2} qui constitue la suspente à rupture de joint. Le dit sous-ensemble se compose de :
  • ∘ Une pièce 2c suspente de rupture thermique. La dite pièce 2c en matière (composite) présente une résistance thermique élevée. Sa section sera suffisante afin de supporter les contraintes de traction engendrées par le poids du parement extérieur (par exemple 150kg/m²). La pièce 2c comporte deux alésages dont les axes 2a & 2b sont parallèles. L'alésage d'axe 2b est destiné à recevoir un verrou intérieur 7 lié au mur (neuf ou ancien) 6 à isoler. L'alésage d'axe 2a est destiné à recevoir une bague 13, décrite ci après. Avantageusement, la pièce {2} possède un clips 2d qui confirme le verrouillage des pièces {4} & {2} lorsque leurs axes principaux sont confondus (c'est-à-dire en position totalement ouverte)
  • ∘ Une bague à rupture 13 en matériau élastique (caoutchouc par exemple). La dite bague 13 est préférentiellement cylindrique et de diamètre sensiblement égal à celui de l'alésage d'axe 2a de la pièce 2c. Elle est munie d'un trou 13a coaxial avec l'axe 2a. Ce trou 13a est destiné à recevoir la forme droite 4c de la suspente tridimensionnelle articulée {4}. Une fente 13b qui relie le trou intérieur au cylindre extérieur, permet le passage de la tige droite 4c de la suspente articulée {4}. Ce dispositif 13 constitue un amortisseur qui découple les masses du parement extérieur et la Masse de la structure. Cette technologie particulière qui respecte la loi « masse-ressort-MASSE » répond aux conditions d'affaiblissement acoustique.
• Sur la figure 3d est schématisée la suspente articulée 4. La dite pièce est constituée par un fil dont le profil a une forme en Vé et une section préférentiellement circulaire. Les parties droites 4c & 4c' ont des axes 4a & 4b sensiblement parallèles. Les parties droites 4c & 4c' sont situées dans un même plan mais leurs médiatrices ne sont pas coïncidentes. Par ailleurs la distance normale entre les axes 4c-4c' est sensiblement égale à celle entre les axes 2a-2b de la pièce {2}
• La figure 3e est une vue de détail qui représente le profil de la pièce 4 dont le pas est identique à celui de la pièce 3 mais de hauteur différente
• Sur la figure 3f est schématisée la suspente tridimensionnelle de compression 3. La dite suspente a un profil et une section de même nature que ceux décrits pour la suspente articulée 4. Toutefois, pour des raisons de résistance mécanique, les dimensions de la section peuvent être différentes. De même, pour respecter le principe dont il est fait mention dans la description attachée à la figure 1, la distance entre les axes 3a-3b est double de celle entre les axes 4a-4b
• La figure 3g est l'assemblage schématique des pièces {2}, {3} & {4}. Le dit assemblage réalise le principe décrit en planche du dispositif articulé revendiqué.

In the example on plate 3 we represent:

• On the figure 3a the outer block subset {1} is schematized. The said subset consists of:
  • ∘ An outer clamping block 8a of insulating material (for example polyurethane) provided with two parallel axis bores la 1b which are respectively coincident with the axes 3a & 4a. The outer clamping block 8a comprises a preferably cylindrical foot on which is disposed a hole of axis 8g disposed parallel to the axes 1a and 1b. said outer clamping block 8a also has a housing 8f for receiving a seal 8h. In order to meet the fire regulations, the outer clamping block 8a is preferably reinforced by a safety hook 8c of fire-resistant material (for example steel);
  • ∘ An air knife spacer 8b coaxial with the main axis of the outer clamping block 8a. This part 8b is preferably made of a material that has a high thermal resistance (PVC or other example). Finally, on the outer support face, the part 8b has grooves intended to reinforce the seal at the level of the support on the sealing film 10. The height of the spacer 8b will be chosen so as to maintain a distance between the sealing film of the insulator 19 and the outer sealing film of value at least equal to the thickness of the regulatory air gap 14 (generally 2 cm);
  • ∘ A safety hook 8c incorporated in the manufacture, usually injected. Said hook 8c surrounds the axes of the bores la 1b. This provision makes it possible to ensure a security fastening of the outer facing in the event of destruction of the parts sensitive to fire by example of part {8} and secures the intervention of the fire personnel;
  • ∘ Although optional but preferable, a gasket 8d outside the air gap. This seal is clamped between the part {8} and the outer sealing film 10. The role of said seal 8d is to prevent any water penetration inside the air gap;
  • ∘ A clamping member 8e. The clamping function of this member 8e can for example be carried out as represented by an eccentric whose axis of rotation is coincident with the axis 8g. This eccentric axis will be made of a material that has a high fire resistance. Thus, in case of fire, the facing will be connected to the structure by elements with a fire resistance that will leave the security services the intervention time without risk of falling of the facing;
  • ∘ A shuttering wall of insulation 9. The said wall 9 is intended to confine the insulation inside the insulating volume 16. The wall 9 is filtering and allows without degradation the passage of the condensates of the insulating volume 16 in the blade. air 14.
  • ∘ An outer sealing film 10. The roles of the said film are:
    • ▪ to prohibit, or at least limit, the penetration of runoff water on the exterior facing
    • ▪ Serve as a projection support for projected exterior siding.
  • ∘ A grid 11 which will constitute a reinforcement (made of galvanized steel or composite) for projected exterior siding.
• The figure 3b represents an exemplary embodiment of the eccentric 8e. The said eccentric has its axis of rotation coincide with the bore 8g of the clamping piece 8a
• On the figure 3c is schematized a subset {2} which constitutes the line with joint failure. The said subset consists of:
  • ∘ A 2c piece with thermal break. The said piece 2c of (composite) material has a high thermal resistance. Its section will be sufficient to withstand the tensile stresses caused by the weight of the outer facing (for example 150kg / m ² ). The part 2c has two bores whose axes 2a & 2b are parallel. The axis bore 2b is intended to receive an inner lock 7 connected to the wall (new or old) 6 to isolate. The axis bore 2a is intended to receive a ring 13, described below. Advantageously, the part {2} has a clip 2d which confirms the locking of the pieces {4} & {2} when their main axes are merged (that is to say in the fully open position)
  • ∘ A rupture ring 13 made of elastic material (rubber for example). Said ring 13 is preferably cylindrical and of diameter substantially equal to that of the axis bore 2a of the part 2c. It is provided with a hole 13a coaxial with the axis 2a. This hole 13a is intended to receive the straight form 4c of the articulated three-dimensional suspension {4}. A slot 13b which connects the inner hole to the outer cylinder, allows the passage of the right rod 4c of the articulated hanger {4}. This device 13 constitutes a damper which decouples the masses of the outer face and the mass of the structure. This particular technology which respects the law "mass-spring-MASS" answers the conditions of weakening sound.
• On the figure 3d is schematically articulated hanger 4. The said piece is constituted by a wire whose profile has a shape Vee and a preferably circular section. The straight portions 4c & 4c 'have axes 4a & 4b substantially parallel. The straight parts 4c & 4c 'are located in the same plane but their mediators are not coincident. Moreover, the normal distance between the axes 4c-4c 'is substantially equal to that between the axes 2a-2b of the part {2}
• The figure 3e is a detail view that represents the profile of the piece 4 whose pitch is identical to that of the piece 3 but of different height
• On the figure 3f is schematized the three-dimensional compression line 3. The said hanger has a profile and a section of the same nature as those described for the articulated hanger 4. However, for reasons of mechanical strength, the dimensions of the section may be different. In the same way, to respect the principle mentioned in the description attached to the figure 1 , the distance between the axes 3a-3b is twice that between the axes 4a-4b
• The figure 3g is the schematic assembly of parts {2}, {3} & {4}. Said assembly realizes the principle described in the plate of the articulated device claimed.

In the example shown in the figures of the board 4 (view 4a in section, 4b in perspective and 4c detail in section of the attachment), the claimed device is shown mounted on a veil to be made using the principle of the patent FR 2 800 112 B1 . These various figures show schematically the connection between the device and the formwork reinforcement cage {18} intended to receive the structural filling material (concrete in general). Said connection is advantageously achieved by the introduction of the inner latches 7 in the loop ladders 18a of the cage {18}. By this arrangement the outer face, for example coated or stapled stones, is positively related to the structure. Thus, there is no longer any risk of separation of the heavy part of the facing (stone for example) with the structure. This uncoupling is a consequence of the creep of the fixing pins used in the traditional system.

On Plate 5, the Figures 5a to 5f schematically according to sections the implementation phases of the claimed device.

The figure 5a represents an example of the structural structure to be insulated according to the principle of the patent FR 2 800 112 B1 ; The figure 5b schematizes the phase 1 of the laying of the device {1} in the folded state;
The figure 5c shows the phase 2 of the laying of the said device {1} unfolded;
The figure 5d represents phase 3 which corresponds to the generally concrete filling 20 of the structural volumes of the outer walls 6, upper floor 6a, lower floor 6b & 6c.

The figure 5e schematizes the phase 4 which shows the filling by an insulator 17 of pulverulent nature of the insulating volume. Said insulation is implemented by insufflation in the upper mouths 22.

The figure 5f represents the final phase 5 which corresponds to the laying of the outer facing 23. Said facing extends both on the outer and inner face of the reinforced grid 11. The outer face 23 is also integral with the structure thanks to the chain 8c eccentric clamping piece, safety hook 8c, articulated hanger 4 & compression hanger 3. The part 2 which can also be armed may preferentially be composite only. Indeed, given its thickness, the insulation 17 is for this part {2} sufficient protection against the disorders following a disaster (fire for example).

In Plate 6, the writer shows how the insulation that has lost its insulation capabilities over time can be replaced.

the figure 6a , is a perspective view that shows the isolated wall being dumped from its old insulation. This emptying is performed by sucking, in the direction of the arrow "F", by the lower nozzle 21 the old insulation. Said nozzle 21 is equipped with a shutter or shutter valve not shown which will be placed in the open position before performing this suction, and closed when the complete suction of the old insulation is completed.

the figure 6b , is a perspective view that shows the insulated wall being filled after having completely drained its old insulation. This emptying is carried out by blowing, in the direction of the arrow "F", by the upper nozzle 22 the new insulation. Said nozzle 22 is equipped with a shutter or not shown valve which will be placed in the open position before performing this insufflation.

Claims (8)

1. Device {0} intended to form an insulating volume (16) behind a forming wall (9) to produce highly thick insulation (17) integrated into new concrete works or produced on old works (6),
   characterised in that it comprises:

   - said forming wall (9);

   - a support (5) to fasten said device to said work;

   - a mechanism to connect said wall (9) and said support to each other, said mechanism being able to be in a folded position and in an unfolded position;

   said mechanism being formed from subassemblies comprising:

   - a first V-shaped hanger (3) formulated, on the one hand, with said support (5) and, on the other hand, with said forming wall (9); and,

   - a second hanger (4) and a third hanger (2) formulated between each other;

   the second V-shaped hanger (4), being formulated with said forming wall (9) by the ends (4a) of the "V" opposite the tip (4b) of said "V", and, the third hanger {2} being formulated by a first end (2b) with said support (5) and by a second end (2a) with the end (4d) in the form of a tip of said second hanger (4);
   so that, in the folded position, said hangers (2, 3, 4) are substantially folded up against said wall (9); and so that, in the unfolded position:

   - the first hanger belongs to a first plane; and,

   - the second and third hangers together belong to a second plane;

   said first and second planes crossing, in order to produce a three-dimensional structure,
   said subassemblies together defining a cylinder with an isosceles triangle base, of which a first side is held by said first plane, and a second side is held by said second plane, the first and second sides being of the same size, and of which the third side (5a-5b) is of a slightly shorter length to the first and second sides.
2. Device according to claim 1,
   characterised in that in order to enable it to be folded, the device is formulated in rotation around parallel axes (la, 2a, 2b, 3a, 3b, 4a, 4b, 5a & 5b) located in the subassemblies {1}, {2}, 3, 4 & 5.
3. Device according to claim 1,
   characterised in that the device's external part is formulated on the subassembly {1} whereon is produced, after the implementation of a sealed film (10), a reinforced grid (11) intended to reinforce an exterior cladding (23).
4. Device according to any one of the claims 1 to 3,
   characterised in that the above-mentioned subassemblies which connect the wall (6) to the exterior subassembly (1) which receives the exterior cladding (23), comprise bodies (8c, 8e, 3 & 4) that have an increased fire resistance.
5. Device according to any one of the preceding claims,
   characterised in that the above-mentioned subassemblies ({1}, {2}, 3 & 4) connecting the exterior cladding (23) to the structure (6), integrate bodies (13, 2c) which form a rupture of thermal and acoustic bridges.
6. Device according to any one of the preceding claims,
   characterised in that the above-mentioned device is, advantageously, connected to a filtering casing, the fastening of said device being achieved by locks (7) positioned in the loops of ladders (18) with binding effect.
7. Device according to any one of the preceding claims,
   characterised in that the device in a folded position clears a high volume of thickness (16) wherein an insulating material (17) can be inserted by blasting or filling.
8. Device according to any one of the preceding claims,
   characterised in that the above-mentioned device has, on its exterior face, two nozzles, one on the bottom part (21) which enables the emptying of insulators which have lost their insulating quality, the other on the top part (22) which enables filling with a new insulator.

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