Insulation process and appliance obtained

Patent metadata

Field	Value
Publication number	US-12007059-B2
Application number	US-201716318914-A
Country	US
Kind code	B2
Filing date	Jul 18, 2017
Priority date	Aug 1, 2016
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

A process is for insulating an appliance, in particular a three-dimensional appliance likely in particular to be exposed to high temperatures, such as a domestic oven. The appliance has one or more internal spaces to be insulated. Flakes and/or nodules of wool(s) and/or fibers, in particular mineral wool(s) and/or fibers, are blown into the space(s) to be insulated without adding binder or water.

First claim

The invention claimed is:

1. A process for insulating an oven, the oven having one or more internal spaces, to be insulated, the process comprising:
blowing flakes and/or nodules of wool(s) and/or fibers into the space(s) to be insulated without adding binder or water,
wherein at least 50 wt. % of the flakes have a largest dimension in a range of from 5 to 25 mm,
wherein the flakes and/or nodules are made of glass or carbon or ceramic wool(s) or fibers, with a micronaire of less than 25 L/min, and/or are made of rock wool(s) or fibers, with a fasonaire of greater than 150 mmwc,
wherein the blowing gas pressure is in a range of from 12 to 45 kPa and/or in that the blowing flow rate is in a range of from 40 to 90 g/s,
wherein the flakes from an insulating layer with a density in a range of from 40 to 120 kg/m 3 , and
wherein the insulating layer takes a final shape without requiring a subsequent shaping.

2. The process of claim 1 , wherein the flakes and/or nodules have a size of less than 50 mm.

3. The process of claim 1 , wherein the flow of blown material comprises, besides the flakes and/or nodules of wool(s) and/or fibers:
less than 2% by weight of moisture; and
less than 8% of binder already polymerized or crosslinked or cured or hardened or that has already reacted.

4. The process of claim 1 , wherein the flakes and/or nodules comprise a content of organic compounds of less than 8 wt. %,
wherein the flakes and/or nodules have less than 8 wt. % of binder, and
wherein the content of anti-dusting agents in the blown material is less than 1 wt. %.

5. The process of claim 1 , wherein the blown material also comprises an aerogel.

6. The process of claim 1 , wherein the blowing gas pressure is in the range of from 12 to 45 kPa.

7. The process of claim 1 , wherein the blowing gas stream is oriented substantially parallel to the mid-plane of the space to be insulated, with an angle of incidence of the blowing stream with the plan of between +5° and −5°.

8. The process of claim 1 , wherein the blowing is carried out simultaneously in several spaces to be insulated.

9. The process of claim 1 , wherein the oven is a domestic oven.

10. The process of claim 1 , wherein the flakes and/or nodules of wool(s) and/or fibers comprise mineral wool(s) and/or fibers.

11. The process of claim 1 , wherein
the blowing flow rate is in the range of from 40 to 90 g/s.

12. The process of claim 6 , wherein the blowing flow rate is in the range of from 40 to 90 g/s.

Assignees

• Saint Gobain Isover

Inventors

• Bareyt Christophe
• Gogeon David

Classifications

• F24C15/34

  Elements and arrangements for heat storage or insulation · CPC title

• F24C15/08

  Foundations or supports plates; Legs or pillars; Casings; Wheels (tops, e.g. hot plates F24C15/10) · CPC title

• F16L59/04 Primary

  Arrangements using dry fillers, e.g. using slag wool · CPC title