Device for preparing an insulation product made from wool, in particular mineral wool

Patent metadata

Field	Value
Publication number	US-12442201-B2
Application number	US-202017787167-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 20, 2019
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

A device for preparing an insulation product based on wool, includes a chamber including an inlet opening through which a stream of carrier gas and a wool in the form of nodules or flakes are introduced, at least one system for generating a turbulent gas flow in the chamber, and an outlet opening through which flakes mixed with an outlet gas stream are expelled, wherein the device also includes at least one deflector element arranged in the chamber, creating a disruption that aerates the wool in the form of nodules or flakes.

First claim

The invention claimed is:

1. A device for preparing an insulation product based on wool, comprising a chamber comprising an inlet opening through which a stream of carrier gas and a wool in the form of nodules or flakes are introduced, the gas stream being subjected to turbulent flow in said chamber, and an outlet opening through which flakes mixed with an outlet gas stream are expelled, and a deflection system configured to deflect the gas stream thereby enabling an increase in a residence time of the wool in the chamber, creating a disruption that aerates the wool in the form of nodules or flakes, said deflection means comprising at least one deflector element arranged in said chamber, the at least one deflector element extending from an interior wall of the chamber wherein said at least one deflector element comprises a deflection surface and at least one arm connecting said deflection surface to an interior wall of the chamber.

2. The device as claimed in claim 1 , wherein said at least one deflector element comprises a deflection surface extending from an interior wall of the chamber.

3. The device as claimed in claim 2 , wherein said deflection surface is a two-dimensional plate.

4. The device as claimed in claim 2 , wherein said deflection surface is a three-dimensional part.

5. The device as claimed in claim 1 , wherein said at least one deflector element comprises a cross member arranged between two internal walls of said chamber.

6. The device as claimed in claim 5 , wherein said cross member comprises irregularities and/or openings.

7. The device as claimed in claim 1 , wherein said deflection system comprises at least one partial misalignment of the main direction of the gas stream entering the chamber through the inlet opening and the outlet opening.

8. The device as claimed in claim 7 , wherein the at least one partial misalignment between the main direction of the gas stream entering the chamber through the inlet opening and the outlet opening is total.

9. The device as claimed in claim 1 , wherein said deflection system comprises at least one obstacle created by an internal wall of said chamber.

10. The device as claimed in claim 1 , wherein the chamber comprises an inlet face for the inlet opening, an outlet face for the outlet opening, two side faces, an upper face and a lower face.

11. The device as claimed in claim 10 , wherein the chamber is such that at least an area of the inlet opening differs from an area of the inlet face.

12. The device as claimed in claim 1 , wherein the chamber comprises an inlet face for the inlet opening, two side faces, an upper face and a lower face, said upper face and said lower face being designed to converge toward one another while leaving a space acting as the outlet opening.

13. The device as claimed in claim 1 , wherein said chamber has a volume of between 5 and 90 dm3.

14. A spray insulation system, comprising a gas generator for generating a gas stream connected to the device for preparing an insulation product based on wool as claimed in claim 1 , said gas generator for generating a gas stream being able to supply a gas stream in which flakes of wool are mixed.

15. The system as claimed in claim 14 , wherein said chamber is designed such that a second pipe is connectable to the outlet opening.

16. The spray insulation system as claimed in claim 14 , wherein the insulation product has a density of around 5 to 15 kg/m3 for products based on glass wool and of around 15 to 50 kg/m3 for products based on rock wool.

17. A device for preparing an insulation product based on wool, comprising a chamber comprising an inlet opening through which a stream of carrier gas and a wool in the form of nodules or flakes are introduced, the gas stream being subjected to turbulent flow in said chamber, and an outlet opening through which flakes mixed with an outlet gas stream are expelled, and a deflection system comprising a deflector element arranged in said chamber and configured to deflect the gas stream thereby enabling an increase in a residence time of the wool in the chamber, creating a disruption that aerates the wool in the form of nodules or flakes wherein said deflector element comprises a deflection surface and at least one arm connecting said deflection surface to an interior wall of the chamber.

18. A device for preparing an insulation product based on wool, comprising a chamber comprising an inlet opening through which a stream of carrier gas and a wool in the form of nodules or flakes are introduced, the gas stream being subjected to turbulent flow in said chamber, and an outlet opening through which flakes mixed with an outlet gas stream are expelled, and a deflection system configured to deflect the gas stream thereby enabling an increase in a residence time of the wool in the chamber, creating a disruption that aerates the wool in the form of nodules or flakes wherein said chamber comprises at least two deflector elements chosen at random.

19. A device for preparing an insulation product based on wool, comprising a chamber comprising an inlet opening through which a stream of carrier gas and a wool in the form of nodules or flakes are introduced, the gas stream being subjected to turbulent flow in said chamber, and an outlet opening through which flakes mixed with an outlet gas stream are expelled, and a deflection system configured to deflect the gas stream thereby enabling an increase in a residence time of the wool in the chamber, creating a disruption that aerates the wool in the form of nodules or flakes, said deflection system comprising at least one deflector element arranged in said chamber, the deflector element comprising a deflection surface extending from an interior wall of the chamber, and said chamber comprising at least two deflector elements chosen at random.

Assignees

• Saint Gobain Isover

Inventors

• Michel Alexia
• Luis David

Classifications

• B05B7/1404

  Arrangements for supplying particulate material · CPC title

• E04F21/12 Primary

  acting by gas pressure, e.g. steam pressure · CPC title

• E04F21/085

  for filling building cavity walls with insulating materials · CPC title

• B05B7/145

  specially adapted for short fibres or chips · CPC title

• D01G9/08 Primary

  by means of air draught arrangements · CPC title