FR3042803A1 - THERMAL BRIDGE BREAKAGE ANCHOR ELEMENT AND METHOD OF ASSEMBLY - Google Patents

Abstract

The present invention relates to a gutter element (1) intended to be abutted with at least one second gutter element (10) by means of a flange (2), said gutter element (1) consisting of assembly of two metal skins (3, 4) enclosing a core (5) of insulating material, namely a first upper skin (3), to collect the water to be discharged, and a second lower skin (4), said two skins (3, 4) being U-shaped The gutter element (1) according to the invention is characterized in that each of the longitudinal end edges of said upper skin (3) and each of the longitudinal end edges of said lower skin (4) are bent at right angles to form a longitudinal flange extending respectively outward (31, 32) and inwardly (41, 42) of the U, so that when clasping said core (5), each of the flanges (31, 32) of a skin (3) comes opposite a flange (41, 42) of the other skin (4), while a double-sided adhesive elastomer seal (81, 82) is interposed between said facing flanges for assembly.

Description

The present invention relates to the field of building and, more particularly, preferably, the field of industrial building. The invention relates more specifically to a gutter, or gutter, generally metal, ie a conduit, positioned for example at the base of a roof, whose bottom is sloped, and intended for the collection of rainwater to to allow their evacuation. The invention is more particularly related to a gutter element with thermal break, intended to be assembled with at least one other gutter element to form a gutter which will equip, preferably, an industrial building. The invention also relates to a method of assembling said gutter.

Traditionally, with regard to industrial buildings, gutters are fixed on poles, for example metal, and are in contact with the roof, itself metallic. Generally, the roof is formed of sandwich panels for insulation of the frame from the outside of the building.

The usual gutters consist of a simple metal chute. Therefore, the association of these gutters with the roof is likely to cause the presence of thermal bridges. In other words, the presence of gutters at the base of the roof of a building creates an area which, in the envelope of said building, exhibits a variation of the thermal resistance and where the insulating barrier is potentially broken.

In the state of the art, it has been sought to propose improvements to existing gutters and gutters, generally consisting of an assembly of metal elements nested by overlap.

Thus, for example, GB 1 130 844 discloses a gutter conqposée two thin metal sheets: an outer sheet, intended to be in contact with rainwater, and an inner sheet, positioned below said outer sheet. It is also intended to interpose, between said two sheets, internal and external, a rigid expanded plastic material.

In addition, an impermeable coating is provided at the outer metal sheet which is in contact with the rainwater.

Also known from European Patent Document EP 0 080 850, a gutter reinforcing two elements connected by a connecting means. Each of the gutter members includes a lower skin and a top skin, made of fiberglass reinforced plastic material, and the space between said skins is filled with a thermally insulating expansive foam. The respective edges of the upper and lower skins are in contact at their ends.

In the state of the art, patent GB 2 388 851 still discloses a solution of positioning a first flexible PVC layer and a second metal layer of appropriate shape, and then filling the gap between the two layers of foaming material, polyurethane foam type. The flexible PVC layer is thus forced, due to the pressure exerted by the expansive foam, to take the shape of the mold.

A protective intermediate layer of polar textile is also provided at the entire inner face of the flexible PVC layer.

However, such a solution is tedious and uneconomical to implement.

In general, the solutions proposed in the state of the art do not allow an effective rupture of the thermal bridges likely to be put in place between the gutter, or the gutter, and the structure, including the roof, of the building.

Indeed, in particular, the cavities between the inner and outer layers or skins of the gutter or gutter may not be satisfactorily filled, this filling can, moreover, be tedious.

In addition, the existing solutions generally have, inevitably, a rupture of the insulating barrier at one point or another of the assembly. The invention offers the possibility of overcoming the various drawbacks of the state of the art by proposing a gutter element, intended to be assembled with at least one other gutter element, the assembly being easy and thermal break. To this end, the present invention relates to a gutter element intended to be abutted with at least one second gutter element by means of a flange, said gutter element consisting of the assembly of two metal skins enclosing a core of insulating material, namely a first upper skin, to collect the water to be discharged, and a second lower skin, said two skins being shaped in a U-shape.

Said gutter element of the invention is particular in that each of the longitudinal end edges of said upper skin and each of the longitudinal end edges of said lower skin are bent, at right angles, to form a longitudinal flange, extending respectively outwardly and inwardly of the ü, so that, when the said soul is squeezed, each of the edges of one skin comes opposite a rim of the other skin, while a seal double-sided adhesive elastomer is interposed between said facing flanges for assembly.

The presence of a double-sided adhesive elastomer seal makes it possible, on the one hand, to prevent the flanges of the lower and upper skins from coming into contact with each other. On the other hand, there are no other points of connection between the two skins in the gutter element. This avoids the formation of thermal bridges between the building equipped with a gutter formed by the assembly of elements according to the invention. Thus, the energy losses from the roof of the building, to the gutters, are substantially reduced by the invention.

Advantageously, said core consists of the juxtaposition of blocks which are linked by the injection of an expansive foam. The soul is thus particularly insulating.

According to another feature of the invention, said gutter element comprises at least one orifice for injecting an expansive foam between the upper and lower metal skins after assembly of two abutting gut elements.

Preferably, the gutter element according to the invention further comprises, at the end, at the level of at least one abutment edge with a second gutter element, at least one portion of hole intended to form, with another portion of hole of the abutting gutter element, an injection port for simultaneous injection of expansive foam into said two gutter elements.

More preferably, said hole portions are positioned at at least one edge between the transverse portion and the two lateral sides of the U.

By means of at least this cylindrical orifice, the injection of the expansive foam is particularly easy.

Interestingly, the end of the rim of the lower skin is maintained at a distance d of between 4 and 6 mm from the upper skin, preferably at a distance d of 5 mm.

As regards the core of insulating material, it is advantageously positioned in a recess of 2 to 3 cm with respect to each end of said gutter element to facilitate the injection of foam expansive.

As regards the blocks of the insulating core, these are preferably made of expanded polystyrene.

The present invention also relates to a method of assembling and filling, by means of an expansive foam, gutter elements according to the invention. Other features and advantages of the invention will emerge from the following detailed description of non-limiting embodiments of the invention, with reference to the appended figures in which: FIG. 1 schematically represents a cross-sectional view of FIG. a particular embodiment of a gutter element according to the invention; - Figure 2 shows an enlargement of a portion of a gutter element according to the invention, the enlarged portion being framed in Figure 1; - Figure 3 illustrates, schematically, a perspective view of an end of a gutter element according to the invention;

Figure 4 is a perspective illustration of the assembly of two gutter elements according to the invention, and also shows an enlargement of a portion of the abutment zone between said two gutter elements.

As shown in Figure 1, the present invention relates to a gutter element 1 intended to be abutted with at least a second gutter element 10, as shown in Figure 4, to equip a building, including a building industrial.

On industrial buildings, the gutters are generally positioned at the base of the roof, so as to allow a collection of rainwater from said roof and their evacuation to a suitable means, type sewer. The gutter element 1 according to the invention comprises in particular a flange 2 at each of its ends. Each of the flanges 2 of a gutter element 1 has the function of allowing the assembly of a first gutter element 1 to a second gutter element 10, for example by bolting between the respective flanges 2, 20 of said two elements 1 , 10 butted.

Advantageously, illustrated in Figure 1, a flange 2 may be shaped U-shaped, as the whole gutter element 1.

However, such an embodiment should not be considered as being limiting, and the flange 2 can also be shaped, for example, in the manner illustrated in the attached FIG. 3, namely only in the form of a rectilinear portion positioned under the gutter element 1.

A gutter element 1 according to the invention more precisely consists of the assembly of two metal skins 3, 4 enclosing a central core 5 of insulating material, the latter being advantageously conposed at least by the juxtaposition of a plurality of blocks 50, 51, 52, 53, preferably of expanded polystyrene, and bonded through an expansive foam.

Thus, said element 1 comprises, on the one hand, a first upper skin 3, intended to receive the rainwater with a view to its evacuation, and, on the other hand, a second lower skin 4, positioned under said upper skin 3.

As can be seen in the accompanying figures, said upper and lower skins 3 are both U-shaped. For this purpose, said two skins 3, 4 each advantageously have a transverse portion 6 and two lateral sides 71, 72, the latter each extending at right angles from the longitudinal ends of said transverse portion 6. The gutter element 1 of the invention is particular in that each of the longitudinal end edges of the upper metal skin 3 is folded at right angles , towards the outside of the U, to form, on each side of the U of the element 1, a longitudinal flange 31, 32.

Likewise, each of the longitudinal end edges of the lower metal skin 4 is bent at right angles, this time towards the inside of the U. Thus, two longitudinal edges 41 and 42 extending on either side of the element are formed. of gutter 1, towards the interior of the U.

Therefore, when the central core 5 of insulating material is gripped, each longitudinal flange 31, 32 of the upper skin 3, for example, comes opposite, respectively, longitudinal flanges 41, 42 of the metallic skin. lower 4.

Between the upper flange 31 and the lower flange 41 opposite is interposed at least one double-sided adhesive elastomer seal 81.

It is the same on the other side of the gutter element 1, between the upper flange 32 and the lower flange 42 opposite. Indeed, as illustrated in the accompanying figures, and more particularly in Figures 1 and 2, a double-sided adhesive elastomer seal 82 is also interposed.

The presence of a double-sided adhesive elastomer seal 81, 82 interposed on each side of the gutter element 1 between the flanges 31 and 41, respectively between the flanges 32 and 42, enables the two metal skins 3 and 4 to be bonded together. by preventing any contact between the upper metallic skin 3 and the lower metallic skin 4.

Thus, the energy losses from the roof of the building, to the gutters supporting the gutter elements 1 according to the invention, are substantially reduced, thanks to the features of the invention.

On the exemplary embodiments shown in the accompanying figures, the longitudinal flanges 31, 32 of the upper metal skin 3, extending towards the outside of the U, are positioned above and opposite the longitudinal flanges, respectively 41, 42, of the lower skin 4.

However, it is also conceivable for said longitudinal flanges 41, 42 of the lower skin 4, extending towards the inside of the U, to be positioned above the longitudinal flanges 31, 32 of the upper skin 3.

It is understood that, in all cases, a double-sided adhesive elastomer seal 81, 82 is interposed on each side of the element 1 of the invention, between the edges of the upper and lower skins 4.

Referring now to Figure 2, and in order to avoid contact between the upper skin 3 and the lower skin 4, the end of the longitudinal flange 42 of the latter is stopped at a distance d from said upper skin 3.

It is the same on the other side of the gutter element 1, not shown in FIG. 2, the end of the longitudinal rim 41 of the lower skin 4 being also set back a certain distance d with respect to the upper skin 3 in order to prevent said two skins 3, 4 from coming into contact with each other.

Typically, this distance d is between 4 and 6 mm and, even more preferably, said distance d is substantially equal to or equal to 5 mm.

It will be understood that, when the longitudinal flanges 41, 42 of the lower skin 4 are positioned above the longitudinal flanges 31, 32 respectively of the upper skin 3, it is the latter which are positioned back by a distance d by compared to the lower skin 4, to avoid contact between the skins 3, 4.

In an advantageous embodiment of the invention, a gutter element 1 according to the invention comprises at least one orifice for the injection of an expansive foam between the upper skin 3 and the lower skin 4, so as to bind the blocks 50, 51, 52, 53, preferably of expanded polystyrene, which make up the central insulating core 5 of said element 1.

It is also quite conceivable that each gutter element 1 comprises a plurality of injection orifices.

More specifically, and with reference to FIG. 4, each gutter element 1 of the invention may comprise, at the end, at least one of its edges intended to be abutted with an adjacent gutter element, at least a hole portion 91 intended to form, with another hole portion 910, on said adjacent gutter element 10, the injection orifice 9 of the expansive foam.

To do this, the two hole portions 91 and 910 may each have, for example, a semicircle shape, and be positioned at at least one edge between the transverse portion 6 and the two lateral sides 71, 72 from U.

More preferably still, each of the abutting gutter elements 1, 10 has two hole portions at the two edges, between the transverse portion 6 and each of the two lateral sides 71, 72 of the U, so as to form, when the edge-to-edge assembly of the two gutters 1, 10, two expansive foam injection ports.

This makes it possible, and facilitates, the injection of foam foam simultaneously into the two gutter elements 1, 10 butted, more particularly between the two skins 3, 4, in the central insulating core 5 of said elements 1, 10.

This results, on the one hand, a significant gain of tenqps and a very good connection between said two gutter elements 1, 10, by their respective central cores. As such, and with reference to FIG. 3, it is also provided, in the gutter element 1 of the invention, that the central core 5 thereof is positioned in a recess, preferably of a distance between between 2 and 3 cm, with respect to each of the two ends of the ü, and this in order to facilitate the injection of expansive foam and the connection of two gutter elements 1, 10 butted.

Referring now to Figure 4, the present invention also relates to a method of assembling gutter elements 1, 10 and filling them with an expansive foam.

The method according to the present invention comprises at least the following steps, taken in order: - at least two gutter elements 1.10 are abutted; said gutter elements 1, 10 are bonded together and fastened to their respective flanges 2, 20, for example by bolting the flanges 2, 20 together; an expansive foam is injected simultaneously into said two abutting gutter elements 1, 10; 2 to 10 h according to the preceding step, the excess expansive foam is removed, for example by cutting it with a cutter.

Of course, it is conceivable to abut, edge to edge, more than two gutter elements according to the invention, depending on the final size of the gutter that one wishes to obtain to equip a building, including an industrial building.

In a preferred example, the abutment of two gutter elements 1, 10 makes it possible to define, between said two elements 1, 10, at least one injection orifice 9 facilitating the expansive foam injection simultaneously in said two abutting elements 1 , 10.

According to a particular embodiment, the method of the invention also comprises an advantageous additional step, following the elimination of excess foam, during which a self-adhesive bituminous sealing strip is applied at the level of the the entire joint between the two gutter elements 1, 10 butted.

This advantageous step avoids degradation of the central insulating core 5, and more particularly the expansive foam, over time.

The present invention also relates to a gutter 100, visible in FIG. 4, and comprising at least two gutter elements 1, 10 according to the invention, said gutter 100 being capable of being obtained by the implementation of the steps of FIG. assembly method previously described. The gutter element 1, the method of joining by abutment and filling of several gutter elements 1, 10 and the gutter 100 obtained are particularly interesting and advantageous.

In particular, they make it possible to substantially reduce, or even to avoid, the formation of thermal bridges between the roof of the building and the guteau conposed with gutter elements according to the invention and obtained by the implementation of the steps of the method .

Claims (11)

A gutter element (1), intended to be abutted with at least one second gutter element (10) via a flange (2), said gutter element (1) consisting of the assembly of two metal skins (3, 4) enclosing a core (5) of insulating material, namely a first upper skin (3), to collect the water to be discharged, and a second lower skin (4), said two skins (3). 4) being U-shaped, said gutter element (1) being characterized in that each of the longitudinal end edges of said upper skin (3) and each of the longitudinal end edges of said lower skin (4) are folded over at right angles to form a longitudinal flange extending respectively outward (31, 32) and inwardly (41, 42) of the U, so that, when the said web (5) is restrained (5) , each of the flanges (31, 32) of one skin (3) comes opposite a flange (41, 42) of the other skin (4), tan say a double-sided adhesive elastomer seal (81, 82) is interposed between said facing flanges for assembly. 2. gutter element (1) according to the preceding claim characterized in that said core (5) consists of the juxtaposition of blocks (50, 51, 52, 53) which are connected by the injection of an expansive foam. 3. element gutter (1) according to any one of the preceding claims characterized in that it comprises at least one orifice for injecting an expansive foam between the upper skins (3) and lower (4) metal after assembly of two abutting gutter elements (1, 10). 4. A gutter element (1) according to any preceding claim characterized in that it comprises, at the end, at least one abutment edge with a second gutter element (10), at least a hole portion (91) for forming, with another hole portion (910) of the abutting trough (10), an injection port (9) for simultaneous injection of expansive foam into said two trench elements (1); , 10). 5. gutter element (1) according to the preceding claim characterized in that said hole portions () are positioned at at least one edge between the transverse portion (6) and the two lateral sides (71, 72) of the U. 6. gutter element (1) according to any one of the preceding claims characterized in that the end of the flange (41, 42) of the lower skin (4) is maintained at a distance (d) between 4 and 6 mm of the upper skin (3), preferably at a distance of 5mm. 7. gutter element (1) according to any one of the preceding claims characterized in that the core of insulating material (5) is positioned recessed from 2 to 3 cm with respect to each end of said gutter element (1). to facilitate the injection of expansive foam. 8. gutter element (1) according to any one of claims 2 to 7 characterized in that the blocks (50, 51, 52, 53) of the insulating core (5) are expanded polystyrene. 9. A method of assembling and filling gutter elements (1, 10) according to the preceding claim, comprising the following steps taken in order: - at least two gutter elements (1.10) are abutted; said gutter elements (1, 10) are bonded by assembling and fastening their respective flanges (2, 20); an expansive foam is injected simultaneously into said two abutting gutter elements (1, 10); 2 to 10 hours following the preceding step, the excess foam is cut. 10. Method according to the preceding claim comprising an additional step in which a self-adhesive bituminous sealing strip is applied between the abutting gutter elements (1, 10). 11. Gutter (100) comprising at least two gutter elements (1, 10) according to any one of claims 1 to 8 and obtainable by implementing the method according to claims 9 or 10.