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JP-7854934-B2 - A device for spraying a barrier.

JP7854934B2JP 7854934 B2JP7854934 B2JP 7854934B2JP-7854934-B2

Inventors

  • アレクシア ミシェル
  • ダビド ルイ

Assignees

  • サン－ゴバン イゾベール

Dates

Publication Date
20260507
Application Date
20201218
Priority Date
20191220

Claims (19)

  1. An apparatus (10) for preparing a wool-based barrier product, wherein the apparatus (10) comprises a chamber (100) into which a flow of carrier gas and wool in the form of lumps or flakes are introduced, at least one means capable of generating a turbulent gas flow in the chamber, and an outlet opening (103) for releasing flakes mixed with the outlet gas flow. The apparatus (10) further comprises a system (200) for adjusting the outlet opening, which enables the area of the outlet opening to be controlled from 0 to 100%, wherein the outlet opening can be 100% open, closed, or in one of the positions between 0% and 100%.
  2. The apparatus according to claim 1, wherein the outlet opening (103) has a larger area than the inlet opening (101).
  3. The apparatus according to claim 1 or 2, wherein the system for adjusting the exit opening includes at least one shutter (201) disposed on one of the surfaces of the chamber, and means (230) for positioning the shutter.
  4. The apparatus according to claim 3, wherein the means for positioning the shutter includes a plurality of holes (211) arranged in at least one line on the surface of the chamber, and at least one set of studs (213) positioned on the shutter to fit two blind holes.
  5. The apparatus according to claim 3, wherein the means for positioning the shutter includes a rail system (220) comprising two receiving rails (223) arranged on the chamber (100) and two sliding rails (224) arranged on the shutter (201), wherein the arrangement of the sliding rails is such that the sliding rails conform to the receiving rails so as to slide.
  6. The apparatus according to claim 5, wherein the means for positioning the shutter includes an indexing means (205) for fixing the position of the shutter relative to the receiving rail.
  7. The apparatus according to claim 5, wherein the means for positioning the shutter includes a driving means (230) comprising at least one motor (231), at least one sawtooth-shaped engaging element (232) disposed on the shutter, and at least one gear element (233) for creating a mechanical connection between the motor and the sawtooth-shaped engaging element.
  8. The apparatus according to any one of claims 1 to 7, wherein the system for adjusting the outlet opening includes two shutters (201) each positioned on one of the surfaces of the chamber, and means for positioning the shutters.
  9. The apparatus according to claim 8, wherein the means for positioning the shutters includes, for each shutter, a driving means (230) comprising a motor, at least one sawtooth-shaped engaging element disposed on the shutter, and at least one gear element for creating a mechanical connection between the motor and the sawtooth-shaped engaging element.
  10. The apparatus according to claim 8, wherein the means for positioning the shutters includes a drive means (230) comprising a motor, at least one sawtooth-shaped engaging element disposed on each shutter, and at least one gear element for creating a mechanical connection between the motor and the sawtooth-shaped engaging element of each shutter.
  11. The apparatus according to claim 1, wherein the system for adjusting the outlet opening includes at least one diaphragm positioned in the outlet opening (103), the diaphragm being circular .
  12. The apparatus according to any one of claims 1 to 11, wherein the chamber includes an inlet surface (100a) for the inlet opening (101), an outlet surface (100b) for the outlet opening (103), two side surfaces (100c), a top surface (100d), and a bottom surface (100e), and the system (200) for adjusting the outlet opening is located on the outlet surface.
  13. The apparatus according to any one of claims 3 to 7, wherein the chamber has an inlet surface for the inlet opening, two sides, and two walls converging toward each other while leaving space to function as the outlet opening, and the at least one shutter is positioned on one of the converging walls, and the movement of the at least one shutter allows for the direction of a portion of the flow of clumps or flakes.
  14. The apparatus according to any one of claims 3 to 7, wherein the chamber includes an inlet surface for the inlet opening, two side surfaces, a top surface, and a bottom surface, the top surface and the bottom surface being designed to converge toward each other while leaving space to function as the outlet opening, and the at least one shutter being located on the top surface or the bottom surface.
  15. The apparatus according to any one of claims 3 to 7, wherein the chamber includes an inlet surface for the inlet opening, an outlet surface for the outlet opening, two side surfaces, a top surface, and a bottom surface, the outlet surface including two portions designed to converge toward each other while leaving space to function as the outlet opening, and the at least one shutter is positioned on one of the portions of the outlet surface.
  16. The apparatus according to any one of claims 1 to 15, wherein the chamber has a volume of 5 to 90 dm³ .
  17. The apparatus according to claim 1, wherein the chamber has an inlet surface for the inlet opening, and at least the area of the inlet opening is different from the area of the inlet surface.
  18. A barrier spray system comprising means P for generating a gas flow, connected to an apparatus according to any one of claims 1 to 17 for preparing a barrier product based on mineral wool or cellulose, wherein the means P for generating the gas flow can supply a gas flow mixed with wool flakes.
  19. The barrier spray system according to claim 18, wherein the density of material (L) is a certain value between approximately 5 and 15 kg/ m³ for glass wool-based products, and a certain value between approximately 15 and 50 kg/ m³ for rock wool-based products.

Description

This invention relates to a ventilation device for spraying barrier products. Mineral wool is an excellent heat and sound insulator due to its interwoven mineral fibers, which give it a porous and elastic structure. Such a structure allows it to trap air and absorb or reduce noise. Furthermore, mineral wool is primarily manufactured from mineral materials, particularly natural materials or recycled materials (recycled glass), and is therefore attractive from an environmental balance standpoint. Moreover, because mineral wool is based on inherently non-combustible materials, it does not ignite or spread flames. Preferably, mineral wool is selected from glass wool or rock wool. There are bulk-packed products that take the form of small bundles of intertwined fibers forming centimeter-scale particles, without any binders to secure the fibers in the bundles. The manufacture of bulk mineral wool involves at least the following steps: - The process of melting raw materials such as glass in a melting furnace. - The process of fiberization, - The process of forming a mineral wool mat, - A process of forming small lumps (nodulation) using grinding. The production of bulk mineral wool may further include the following steps: - A step of coating with an antistatic agent and/or a binding agent before, simultaneously with, or after the formation of small clumps, and/or - a step of packaging. At the end of the clumping process, the mineral wool is in the form of clumps or flakes. Therefore, the mineral wool can be used as a bulk-packed barrier product or bulk-packed barrier material by spreading it, spraying it, or using it to fill cavities. Bulk-packed barrier materials correspond to various materials provided in the construction field in the form of small particles, with textures ranging from granular to flaky. Mineral wool is advantageously used in the form of small lumps or flakes, as a primary component of bulk-packed insulation products, for hard-to-access spaces such as attic floors where development has not been carried out or access is difficult. These bulk-packed sealing products are generally applied by mechanical spraying using a sprayer that can spray the sealing product onto the surface from the outlet pipe or inject it into the cavity. Therefore, bulk-packed insulation products are primarily installed by spraying them directly into spaces to be insulated, such as attic spaces, or by injecting them into wall cavities. Bulk-packed containment products are also known as spray-on containment products. The sprayed insulation material needs to be as homogeneous as possible to avoid thermal bridging and thereby improve thermal performance. However, when the insulation material is sprayed, regardless of the diameter of the outlet pipe, the mineral wool, in the form of small lumps or flakes, is not perfectly homogeneous. The thermal conductivity of the resulting insulation material is not optimized. In this regard, as shown in Figure 1, there exists a chamber 1 with an inlet opening 2 and an outlet opening 3, and its structure allows the flakes 4 to be aerated under the effect of turbulent gas flow, which enables the flakes to move randomly within the chamber for a predetermined time before leaving the chamber. However, these chambers for aerating wool cannot solve all the problems operators may encounter in the field. This is because, while the chambers allow flakes to aerate to improve their thermal properties, their bulkiness and unwieldy nature prevent a good quality spray. This bulkiness is even more problematic when the operator needs to move around with the ventilation chamber to spray wool across the entire surface of the space to be sealed. Summary of the Invention: The present invention aims to solve the problems of ventilation chambers known in the prior art by providing a chamber that enables homogenization of the amount of particles/clumps over its operating range. For this purpose, the present invention relates to an apparatus for preparing a wool-based barrier product, wherein the apparatus comprises a chamber, the chamber including an inlet opening into which a flow of carrier gas and wool in the form of lumps or flakes are introduced, at least one means capable of generating a turbulent gas flow in the chamber, and an outlet opening for releasing flakes mixed with the outlet gas flow, and the apparatus further comprises a system for adjusting the outlet opening, which enables the area of the outlet opening to be controlled from 0 to 100%. Advantageously, the present invention involves varying the intensity and pressure of the outlet gas flow from the chamber, thereby increasing the radius of operation of the apparatus for preparing wool-based barrier products. According to one example, a system for adjusting an exit opening includes at least one shutter positioned on one of the chamber's surfaces and means for positioning the shutter. In one example, the means for positioning the shutter includes a