Apparatus for preparing insulation products made from wool, especially mineral wool

Abstract

An apparatus for preparing insulation products made from wool is provided. [Solution] An apparatus for preparing insulation products made from wool, the apparatus comprising a housing having an inlet opening into which a carrier gas flow and wool in the form of nodules or flakes are introduced, at least one means capable of generating a turbulent gas flow within the housing, and an outlet opening from which the flakes mixed with the outlet gas flow are released, the apparatus further comprising at least one deflection element disposed within the housing, the deflection element creating turbulence that aerates the wool in the form of nodules or flakes.

Description

[Technical Field]

[0001] prior art The present invention relates to a device for venting an insulation product. [Background technology]

[0002] Mineral wool is a very good heat and sound insulator because it contains intertwined mineral fibers that give it a porous and elastic structure. Such a structure allows it to trap air and absorb or attenuate noise. Furthermore, mineral wool is mainly produced from mineral materials, in particular natural materials or recycled products (recycled glass), and is therefore attractive from the standpoint of environmental balance. And, since mineral wool is based on materials that are inherently non-flammable, it does not ignite or spread flames. Preferably, the mineral wool is selected from glass wool or rock wool.

[0003] There are loose-packed products that take the form of small bundles of entangled fibers forming centimeter-scale particles, with no binder ensuring the cohesion of the fibers in the bundles.

[0004] The production of loose mineral wool comprises at least the following steps: - melting raw materials such as glass in a melting furnace; - fiberization, - forming a mineral wool mat; - Nodulation process using grinding.

[0005] The production of loose mineral wool may further include the following steps: - coating with agents such as antistatic agents and / or binders before, simultaneously with or after nodule formation; and / or - Bagging process.

[0006] At the end of the nodule formation process, the mineral wool is in the form of nodules or flakes. The mineral wool can therefore be used as a bulk insulation product, bulk insulation, or the like, by spreading it, spraying it, or using it to fill cavities. Bulk insulation represents a variety of materials in the construction field that come in the form of small particles, the texture of which can vary from granular to flaky.

[0007] Mineral wool is advantageously used in nodule or flake form as the primary component of a bulk insulation product for difficult to access spaces, such as the floor of an undeveloped or difficult to access attic space.

[0008] These loose insulation products are typically applied by mechanical spraying using a spray machine that can spray the insulation product onto a surface or inject it into a cavity from an outlet tube.

[0009] Thus, bulk insulation products are primarily installed by spraying them directly into the space to be insulated, such as an attic space, or by injecting them into wall cavities.

[0010] Bulk insulation products are also known as spray-on insulation products.

[0011] The sprayed insulation product needs to be as homogeneous as possible to avoid thermal bridges and thereby improve thermal performance. However, when the insulation product is sprayed, the mineral wool, in the form of nodules or flakes, is not completely homogeneous, regardless of the diameter of the outlet pipe. The thermal conductivity of the resulting insulation product is not optimized.

[0012] In this regard, as shown in Figure 1, there is a chamber 1 with an inlet opening 2 and an outlet opening 3, in which flakes 4 are vented for a predetermined time before exiting the chamber.

[0013] However, these wool ventilation chambers have the drawback of being large to allow good ventilation of the wool flakes, but the large chambers are bulky and heavy, making them difficult to use. Summary of the Invention

[0014] Summary of the Invention The present invention seeks to solve the problems of vent chambers known from the prior art by providing a chamber in which turbulence is created for better aeration of the flakes.

[0015] To this end, the present invention relates to an apparatus for preparing a wool-based insulation product, said apparatus comprising a chamber comprising an inlet opening through which a carrier gas flow and wool in the form of nodules or flakes are introduced, and an outlet opening through which the flakes mixed with an outlet gas flow are released, the gas flow being subjected to turbulence in said chamber, said apparatus further comprising means for deflecting the gas flow, said means making it possible to increase the residence time of the wool in the chamber and creating turbulence that aerates the wool in the form of nodules or flakes.

[0016] The present invention advantageously makes it possible to increase the turbulence created in the chamber by the deflector element. This increase in turbulence makes it possible to better ventilate the insulating wool flakes so that they have better performance. However, this also makes it possible to reduce the size of the chamber while maintaining the same performance. A more compact chamber therefore makes it easier to handle.

[0017] According to one example, the deflection means comprises at least one deflector element.

[0018] According to one example, the deflector element includes a deflection surface extending from an inner wall of the chamber.

[0019] According to one example, the deflector element includes a deflection surface and at least one arm connecting the deflection surface to an inner wall of the chamber.

[0020] According to one example, the deflection surface is a two-dimensional flat plate.

[0021] According to one example, the deflection surface is a three-dimensional part.

[0022] According to one example, the deflector element includes a cross member arranged between two inner walls of the chamber.

[0023] According to one example, the cross members include irregularities and / or openings.

[0024] According to one example, the chamber includes at least two randomly selected deflector elements.

[0025] According to one example, the deflection means comprises at least one partial deviation of the main direction of the gas flow entering the chamber through the inlet opening from the outlet opening.

[0026] According to one example, the main direction of gas flow entering the chamber through the inlet opening is completely offset from the outlet opening.

[0027] According to one example, the deflection means comprises at least one obstacle created by an inner wall of the chamber.

[0028] In one example, the chamber has a diameter of 5 to 90 dm 3 It has a volume of

[0029] According to one example, the chamber is such that at least the area of ​​the inlet opening is different from the area of ​​the inlet face.

[0030] The present invention further relates to an insulation spray system comprising a means P for generating a gas flow connected to an apparatus according to the present invention for preparing a wool-based insulation product, wherein said means P for generating a gas flow is capable of providing a gas flow mixed with wool flakes.

[0031] According to one example, the chamber is designed so that a second pipe can be connected to the outlet opening.

[0032] According to one example, the density of the insulation product is about 5 to 15 kg / m for glass wool based products. 3 and for rock wool-based products, it is about 15-50 kg / m 3 is. [Brief explanation of the drawings]

[0033] DESCRIPTION OF THE DRAWINGS Further particular features and advantages will become clearly apparent from the following description, given entirely as a non-limiting indication, with reference to the accompanying drawings, in which: [Figure 1] FIG. 1 is a schematic diagram of an apparatus for preparing a prior art wool-based insulation product. [Figure 2] 2, 3 and 5 are schematic diagrams of apparatus for preparing wool-based insulation products according to the present invention. [Figure 3] 3 and 14 are schematic diagrams of a barrier spray system in accordance with the present invention. [Figure 4] Figures 4a, 4b and 4c are schematic diagrams of alternative configurations of chambers of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 5] 2, 3 and 5 are schematic diagrams of apparatus for preparing wool-based insulation products according to the present invention. [Figure 6] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 7] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 8a] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 8b] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 8c] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 8d] 6a, 6b, 7, 8a-8d are schematic diagrams of a first embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 9] Figures 9a, 9b and 10 are schematic diagrams of a second embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 10] Figures 9a, 9b and 10 are schematic diagrams of a second embodiment of an apparatus for preparing wool-based insulation products according to the present invention. [Figure 11] 11a and 11b are schematic diagrams of variants of embodiments of apparatus for preparing wool-based insulation products according to the present invention. [Figure 12] 12a, 12b and 13 are schematic diagrams of embodiments of apparatus for preparing wool-based insulation products according to the present invention. [Figure 13] 12a, 12b and 13 are schematic diagrams of embodiments of apparatus for preparing wool-based insulation products according to the present invention. [Figure 14] 3 and 14 are schematic diagrams of a barrier spray system in accordance with the present invention. [Figure 15] Figures 15a, 15b, 15c and 15d are schematic illustrations of further means for increasing the residence time of wool type material according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0034] Detailed Description of the Invention 2 and 3 show an apparatus 10 for preparing a wool-based insulation product according to the present invention. The apparatus 10 comprises a chamber 100 including an inlet opening 101 and an outlet opening 103. A gas flow f is introduced into the chamber 100 via the inlet opening, and this gas flow f is produced by a gas flow generating means P. The inlet opening 101 also allows for the introduction of wool L in the form of flakes or nodules into the chamber via a means for introducing wool in the form of flakes or nodules into the chamber. The wool in the form of flakes or nodules can be rock wool, glass wool, or cellulose wool. The lengths of these mineral wool nodules or flakes are between 0.05 and 5 cm, in particular between 0.1 and 1 cm. These flakes or nodules are formed from entangled fibers in the form of small bundles, small rovings, or "pillings." Thus, the wool and gas flow are introduced into the chamber 100 via a pipe t which is itself connected to a means P for generating a gas flow (a compressor of the spray machine), thereby forming an insulation spray system. The wool can be introduced beforehand into the gas flow. The chamber 100 optionally comprises means for creating entrainment of wool in one direction, direction A, and in a counter direction, B, opposite to direction A, within the chamber, so that there is at least one plane, perpendicular to direction A, within which wool entrained in direction A intersects with wool entrained in the counter direction, B. The means for creating entrainment of wool in one direction, direction A, and in a counter direction, B, opposite to direction A, within the chamber depend, for example, on the shape and size of the chamber.

[0035] In either case, the gas flow is subject to turbulence within the chamber 100 .

[0036] Regarding the chamber 100, the latter is designed so that the inlet opening 101 and the outlet opening 103 are arranged on opposite sides of the chamber. Thus, the inlet opening is arranged on the inlet face 100a, while the outlet opening is arranged on the outlet face 100b. Preferably, the inlet opening 101 and the outlet opening 103 face each other. The chamber is such that at least the area of ​​the inlet opening is different from the area of ​​the inlet face, meaning that the area of ​​the inlet opening is smaller than the area of ​​the inlet face. Preferably, the area of ​​the inlet opening is equal to half the area of ​​the inlet face, preferably equal to one-third, one-quarter or one-fifth the area of ​​the inlet face. Preferably, the area of ​​the outlet opening is also different from the area of ​​the outlet face. This chamber structure makes it possible to disturb the gas flow circulating therein. In the case of a chamber in which the inlet opening has the same area as the inlet face and the outlet opening has the same area as the outlet face, the entering gas flow is not subjected to turbulence to aerate the wool flakes; the flow enters and then leaves without any residence time in the chamber.

[0037] In a first configuration, which can be seen in Figure 4a, the chamber 100 further includes at least two side surfaces 100c, a top surface 100d, and a bottom surface 100e. Thus, in this first configuration, when viewed from the side, the chamber may have a square, rectangular, or trapezoidal longitudinal cross section.

[0038] In the second configuration, which can be seen in FIG. 4b, the chamber 100 includes at least two side surfaces 100c and an upper surface 100d and a lower surface 100e. The outlet surface has been omitted in consideration of the upper and lower surfaces. This is understood to mean that the upper and lower surfaces 100d and 100e are arranged so that an outlet surface is unnecessary. For this purpose, the upper and lower surfaces are arranged so that the chamber has a triangular longitudinal cross section when viewed from the side. For this purpose, the upper and lower surfaces converge toward each other. Such a triangular longitudinal cross section makes it possible to arrange an outlet opening at the intersection between the upper and lower surfaces.

[0039] In a third configuration, which can be seen in Figure 4c, the chamber 100 includes at least two side surfaces 100c, an upper surface 100d, and a lower surface 100e. The outlet surface 100b is divided into two portions 100b' that converge to create a locally / partially triangular longitudinal cross-section. Such a triangular longitudinal cross-section allows for the placement of an outlet opening 103 at the intersection between the two portions forming the outlet surface.

[0040] The chamber is preferably 5 to 90 dm 3 The dimensions allow it to have a volume of .

[0041] The outlet opening 103 may have any shape, such as a circle 103a. Preferably, the outlet opening is in the form of a slot 103b. The slot extends horizontally relative to the plane of the floor. The slot may extend across a portion of the width of the chamber or across the entire width of the chamber. The height of the slot is between 0.1 and 1 cm, preferably between 0.2 and 0.5 cm.

[0042] An advantage of slot 103b is that it allows the flakes to be emitted over a larger width, thereby allowing a larger area to be coated. The exit flow of the flakes is such that the spray velocity is at least 15 m / s, for example about 20 m / s.

[0043] Cleverly, the chamber 100 includes means for deflecting the flow entering said chamber, and these deflecting means are therefore capable of deflecting the gas flow entering said chamber, and are therefore means for increasing the residence time of wool in flake or nodule form in said chamber.

[0044] According to a first solution, these deflection means making it possible to increase the residence time of the wool in the chamber comprise at least one deflector element 200 which serves as a means for generating a turbulent gas flow. This deflector element 200 extends into said chamber 100. This means that said deflector element 200 extends from any internal wall of said chamber 100.

[0045] The deflector element 200 advantageously deflects the incoming gas flow, creating turbulence in the gas flow circulating within the chamber 100. These turbulences result in recirculation points that create instabilities that increase the level of turbulence, creating recirculation motion. These recirculation points are therefore locations where shear forces exist. These shear forces subject insulation materials, such as wool flakes, to high mechanical stresses that contribute to "aerating" the fibers. By passing through the recirculation zone, the time the mineral wool is exposed to high stresses can be significantly increased. This aeration of the insulation material flakes significantly reduces the density of wool or cellulose in the form of nodules or flakes, and in particular, homogenizes its structure. Surprisingly, the expansion and / or homogenization of wool subjected to the aeration process of the present invention is far better than that obtainable by known homogenization processes.

[0046] Compared to non-aerated mineral wool, the improvement in thermal performance is due in particular to a decrease in thermal conductivity at the same density, or a decrease in density at the same thermal conductivity. Furthermore, the resulting insulation product has a much higher air resistance at the same density and thickness. The insulation product obtained after the aeration step has a resistance of about 5 to 15 kg / m², especially for glass wool-based products. 3 , about 15-50 kg / m for rock wool based products 3 It has a low density.

[0047] A second advantage of the chamber according to the invention is that it makes it possible to optimize the size of the chamber. In particular, the turbulence in the gas flow that leads to the aeration of the wool flakes made of the insulating material can be obtained by the chamber itself. This means that the shape and dimensions of the chamber are such that recirculation points are generated. However, the dimensions of the chamber dictate its volume or mass. Therefore, the fact that it is possible to create turbulence in the chamber including the deflector element makes it possible to design a chamber with smaller dimensions and therefore a smaller volume, while having the same performance in terms of aeration of the wool.

[0048] 5, the deflector element 200 includes a deflecting surface 210 extending from the inner wall of the chamber 100. The deflecting surface 210 is used to oppose the gas flow entering the chamber 100, thereby creating turbulence. The deflecting surface may take a variety of forms.

[0049] In a first form, the deflection surface 210 is a flat, two-dimensional plate 211, or plate extending from a wall, as can be seen in Figures 6a and 6b. This plate may have a variety of shapes, such as circular, oval, square, rectangular, parallelepiped, etc.

[0050] In a second form, which can be seen in Figure 7, the deflection surface 210 is a three-dimensional part 212. This three-dimensional part 212 is chamfered or not, solid or partially hollow, conical, pyramidal, parallelepiped, i.e. a part with any shape that makes it possible to deflect / disturb the gas flow.

[0051] For these two configurations, the deflection surface may extend directly from the interior wall of the chamber 100 .

[0052] 8a and 8b, the deflector element 200 further comprises at least one arm 213, one of whose ends is arranged fixed to the inner wall of the chamber 100. This fixing can be achieved by gluing, welding or screwing, or the arm is substantially integral with the chamber. The second end of the arm is used to support the deflection surface 210.

[0053] In a first embodiment, the arm 213 supporting the deflection surface 211 is preferably fixed to the deflection surface 211 via its end.

[0054] In the second configuration, an arm 213 supporting the three-dimensional part 212 extends from one of the faces of the three-dimensional part 212 .

[0055] Having arms 213 provides more options for positioning the deflecting surface 210 relative to the gas flow, and therefore the deflecting surface 210 can be positioned more centrally in the chamber 100.

[0056] In an alternative to the first variant, which can be seen in Figures 8c and 8d, the deflector element 200 includes a second arm 213. This second arm can be arranged in various ways. It is therefore understood that the second arm 213 can extend from the deflection surface 210 parallel to the first arm or from the opposite side. Using an arm 213 extending in the opposite direction has the advantage of reducing the risk of its deformation under the effect of the gas flow, which would lead to changes in turbulence.

[0057] In a second embodiment, which can be seen in Figures 9a and 9b, the deflector element 210 includes a cross member 220 disposed between two walls of the chamber. Figure 9a shows the cross member 210 from the inlet or outlet face.

[0058] This cross member 220 may be in the form of a solid or hollow cylinder, a partially hollowed or unhollowed semi-cylinder, an L-shaped or V-shaped longitudinal section, etc. Thus, as can be seen in Figure 10, the cross member 220 may have any shape that allows it to disrupt the gas flow.

[0059] In two embodiment variants that can be seen in Figures 11a and 11b, irregularities 222, such as through cavities or blind cavities or protrusions, are arranged on the deflector element 210. These irregularities advantageously make it possible to disturb the gas flow.

[0060] In the embodiment visible in Figures 12a and 12b, the chamber comprises a deflector element 200. Figure 12a shows the view from the top wall. This deflector element as described in the two embodiments is positioned facing the inlet opening of the chamber.

[0061] Cleverly, the type of deflector element 210 used depends on the inlet opening 101. In particular, if the inlet opening 101 has a circular shape or the like, a deflector element as described in the first embodiment is used. In the case of an opening 101 in the form of a slot, a deflector element 210 according to the second embodiment is used.

[0062] Specifically, this ingenuity makes it possible to use deflector elements whose shape most closely resembles that of the inlet opening: for an inlet opening in the form of a slot, a deflector element in the form of a cross member. A deflector whose shape is a homothetic transformation of the shape of the inlet opening is therefore used. This means that the apparent area of ​​the deflector, i.e. the area of ​​the deflector projected onto a plane parallel to the plane of the inlet face, is substantially identical, preferably identical, to the area of ​​the inlet opening.

[0063] In this case, the deflector element is positioned facing the inlet opening to maximize its performance. Nevertheless, even if the deflector element does not have a shape that is a homothetic transformation of the inlet opening, it is advantageous to position it facing the inlet opening.

[0064] In a variant of this embodiment, the chamber 100 comprises at least two deflector elements 210. This increase in deflector elements makes it possible to ensure a turbulent gas flow in said chamber.

[0065] In this variant it is therefore possible to combine deflector elements of different kinds, as can be seen in FIG.

[0066] According to a second solution, the deflection means for increasing the residence time of the wool in the chamber is a specific configuration of the chamber. In this second solution, the increase in residence time of the wool is achieved by the chamber itself. In particular, it is possible to increase the residence time of the flakes by disturbing the flow entering it. This disturbance of the flow is the result of the presence of one or more obstacles in the path of the gas flow entering said chamber. This or these obstacles can have various origins.

[0067] According to a first origin, the obstacle to the incoming gas flow comes from the shape of the chamber, which can be seen in Figures 15a and 15d. The chamber has a shape such that at least one wall of said chamber partially faces the incoming gas flow. This wall partially facing the incoming gas flow makes it possible to at least partially deflect the gas flow in a different direction, thereby disturbing the flow.

[0068] According to a second origin, the obstacles to increasing the residence time of the flakes in the chamber are the result of the misalignment of the inlet and outlet openings in Figures 15b and 15d. Such misalignment allows for the creation of a natural obstacle for the incoming gas flow carrying the flakes, which impinges on the inner wall of the chamber. This causes the gas flow to disperse and thus become turbulent.

[0069] The offset necessary to allow for the generation of turbulence to increase the residence time of the flakes in the chamber is at least such that the outlet opening needs not to be completely opposite the incoming gas flow through the inlet opening. This means that the incoming gas flow is propelled in a primary direction in which it is strong and in a secondary direction of lesser strength. Thus, the outlet opening is positioned so that it is not completely opposite the primary direction of the incoming gas flow, although partial overlap is possible. Preferably, the outlet opening is positioned so that there is no overlap between the inlet and outlet openings.

[0070] As can be seen in Figure 15c, the difference in size between the outlet and inlet openings (the outlet opening is smaller than the inlet opening) can result in deflection and increased residence time of material in the chamber. Specifically, having a smaller outlet opening results in the entering flow coming into at least partial contact with the interior walls of the chamber, causing diversion and therefore turbulence of this flow.

[0071] In a variant of the invention, the chamber according to the invention is not used as an end fitting, i.e., the element through which the insulation product is sprayed towards the area to be insulated. In this respect, the chamber may be used as an intermediate element in an insulation spray system. For this purpose, the outlet opening 103 is designed and equipped to have a second pipe t' connected to it. This variant advantageously allows the chamber to be placed on the ground and the operator to handle only the pipe t', as can be seen in Figure 14.

[0072] Naturally, the invention is not limited to the examples shown, but can be varied and modified in various ways that will be apparent to those skilled in the art. The present disclosure includes the following aspects. <Aspect 1> An apparatus (10) for preparing a wool-based insulation product, said apparatus comprising a chamber (100), said chamber comprising: an inlet opening (101) through which a carrier gas flow and wool in the form of nodules or flakes are introduced, said gas flow being subjected to turbulence in said chamber (100); an exit opening (103) through which the flakes are discharged mixed with the exit gas stream; Including, The device (10) further comprises means for deflecting the gas flow, which means make it possible to increase the residence time of the wool in the chamber and create turbulence that aerates wool in the form of nodules or flakes. <Aspect 2> 2. The apparatus of embodiment 1, wherein the deflecting means comprises at least one deflector element (200) disposed within the chamber. <Aspect 3> 3. The apparatus of embodiment 2, wherein the deflector element comprises a deflection surface (210) extending from an inner wall of the chamber. <Aspect 4> 3. The apparatus of embodiment 2, wherein the deflector element comprises a deflection surface and at least one arm (213) connecting the deflection surface to an inner wall of the chamber. <Aspect 5> 5. The apparatus of claim 3 or 4, wherein the deflection surface is a two-dimensional flat plate (211). <Aspect 6> 5. The apparatus of claim 3 or 4, wherein the deflection surface is a three-dimensional part (212). <Aspect 7> 3. The apparatus of embodiment 2, wherein the deflector element comprises a cross member (220) disposed between two interior walls of the chamber. <Aspect 8> 8. The apparatus of any one of aspects 7, wherein the cross members comprise irregularities (222) and / or openings. <Aspect 9> An apparatus according to any one of embodiments 3 to 8, wherein the chamber comprises at least two randomly selected deflector elements (210). <Aspect 10> 2. The apparatus of claim 1, wherein the deflection means comprises at least one partial misalignment of a main direction of the gas flow entering the chamber through the inlet opening (101) with the outlet opening (103). <Aspect 11> 11. The apparatus of claim 10, wherein the main direction of the gas flow entering the chamber through the inlet opening is completely offset from the outlet opening. <Aspect 12> 2. The apparatus of embodiment 1, wherein the deflecting means comprises at least one obstacle created by an inner wall of the chamber. <Aspect 13> 13. The device of any one of aspects 1 to 12, wherein the chamber comprises an inlet face (100a) for the inlet opening, an outlet face (100b) for the outlet opening, two side faces (100c), a top face (100d), and a bottom face (100e). <Aspect 14> 13. The apparatus of any one of aspects 1 to 12, wherein the chamber comprises an inlet face (100a), two side faces (100c), a top face (100d), and a bottom face (100e) for the inlet opening, the top face and the bottom face being designed to converge towards each other while leaving a space that serves as the outlet opening. <Aspect 15> The chamber is 5 to 90 dm 3 15. The device of any one of embodiments 1 to 14, having a volume of <Aspect 16> 15. The apparatus of any one of aspects 13 to 14, wherein the chamber is such that at least the area of ​​the inlet opening differs from the area of ​​the inlet face. <Aspect 17> 17. An insulation spray system comprising: a means for generating a gas stream P connected to an apparatus for preparing a wool-based insulation product according to any one of the preceding embodiments, wherein the means for generating a gas stream P is capable of providing a gas stream mixed with wool flakes. <Aspect 18> 18. The system of embodiment 17, wherein the chamber is designed to allow a second pipe to be connected to the outlet opening. <Aspect 19> The density of the insulating product (L) is about 5 to 15 kg / m for glass wool-based products. 3 and for rock wool-based products, it is about 15-50 kg / m 3 19. The insulation material spray system of claim 17 or 18, wherein

Claims

1. An apparatus (10) for preparing a wool-based heat and sound insulation product, said apparatus comprising a chamber (100), said chamber comprising: an inlet opening (101) through which a carrier gas flow subject to turbulence in the chamber (100) and wool in the form of nodules or flakes are introduced; an outlet opening (103) through which the flakes are discharged mixed with the outlet gas stream; Including, the apparatus further comprises deflection means for deflecting the carrier gas flow, which deflection means makes it possible to increase the residence time of the wool in the chamber and creates turbulence that aerates wool in the form of nodules or flakes; the deflection means comprises at least one deflector element (200) disposed within the chamber, the deflector element (200) extending from an inner wall of the chamber (100); The device (10), wherein the chamber comprises an inlet face (100a) for the inlet opening, an outlet face (100b) for the outlet opening, two side faces (100c), a top face (100d), and a bottom face (100e).

2. An apparatus (10) for preparing a wool-based heat and sound insulation product, said apparatus comprising a chamber (100), said chamber comprising: an inlet opening (101) through which a carrier gas flow subject to turbulence in the chamber (100) and wool in the form of nodules or flakes are introduced; an outlet opening (103) through which the flakes are discharged mixed with the outlet gas stream; Including, the apparatus further comprises deflection means for deflecting the carrier gas flow, which deflection means makes it possible to increase the residence time of the wool in the chamber and creates turbulence that aerates wool in the form of nodules or flakes; the deflection means comprises at least one deflector element (200) disposed within the chamber, the deflector element (200) extending from an inner wall of the chamber (100); The device (10), wherein the chamber comprises an inlet face (100a), two side faces (100c), a top face (100d), and a bottom face (100e) for the inlet opening, the top face and the bottom face being designed to converge towards each other while leaving a space that serves as the outlet opening.

3. 3. The apparatus of claim 1, wherein the chamber has at least an area of ​​the inlet opening that is different from an area of ​​the inlet face.

4. The apparatus of any one of claims 1 to 3, wherein the deflector element comprises a deflection surface (210) extending from an inner wall of the chamber.

5. The apparatus of any one of claims 1 to 3, wherein the deflector element comprises a deflection surface and at least one arm (213) connecting the deflection surface to an inner wall of the chamber.

6. 6. Apparatus according to claim 4 or 5, wherein the deflecting surface is a two-dimensional flat plate (211).

7. 6. The device according to claim 4 or 5, wherein the deflection surface is a three-dimensional part (212).

8. The device according to any one of claims 1 to 3, wherein the deflector element comprises a cross member (220) arranged between two inner walls of the chamber.

9. The device of claim 8 , wherein the cross member includes irregularities (222) and / or openings.

10. Apparatus according to any one of claims 4 to 9, wherein the chamber comprises at least two deflector elements (210).

11. 4. The apparatus according to claim 1, wherein the deflection means is such that the inlet opening (101) is at least partially offset from the outlet opening (103) when viewed in the main direction of the carrier gas flow entering the chamber through the inlet opening (101).

12. 12. The apparatus of claim 11, wherein the inlet opening (101) is completely offset from the outlet opening when viewed in the main direction of the carrier gas flow entering the chamber through the inlet opening.

13. Apparatus according to any one of claims 1 to 3, wherein the deflecting means comprises at least one obstacle created by an inner wall of the chamber.

14. The chamber is 5 to 90 dm ３ 14. The device according to any one of claims 1 to 13, having a volume of

15. 15. An insulation spray system comprising a means P for generating a carrier gas flow connected to an apparatus for preparing a wool-based insulation product according to any one of claims 1 to 14, wherein the means P for generating a carrier gas flow is capable of supplying a carrier gas flow mixed with wool flakes.

16. 16. The system of claim 15, wherein the chamber is designed to allow a second pipe to be connected to the outlet opening.

17. The density of the insulating product (L) is about 5 to 15 kg / m for glass wool based products. ３ and for rock wool based products it is about 15-50 kg / m ３ 17. The insulation spray system of claim 15 or 16, wherein:

Images