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US 2022/0119304 A1Published application
Insulation materials for a vacuum insulated structure and methods of forming
AssigneeWhirlpool Corporation
InventorDevidas B. Raskar
Life of this patent
Estimating the term…
Abstract
A vacuum insulated structure for use in an appliance includes an inner liner and an outer wrapper coupled to the inner liner. A vacuum insulated cavity is defined therebetween. An insulation material is disposed in the vacuum insulated cavity. The insulation material includes porous glass flakes.
Claims20
A vacuum insulated structure for use in an appliance, comprising:
- an inner liner;
- an outer wrapper coupled to the inner liner and defining a vacuum insulated cavity therebetween;
- and
- an insulation material disposed in the vacuum insulated cavity, wherein the insulation material comprises porous glass flakes.
1 more element
A method of forming an insulation material for a vacuum insulated structure, comprising:
- heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass flakes into an acid insoluble silica phase and an acid soluble phase, wherein the glass flakes are derived from a glass composition comprising (by weight):
- SiO2 from about 40% to about 80%,
- B2O3 from about 10% to about 40%,
- Na2O from about 1% to about 10%,
- Li2O from about 0% to about 3%,
- CaO from about 0% to about 10%,
- ZnO from about 0% to about 5%,
- P2O5 from about 0% to about 10%, and
- Al2O3 from about 0% to about 10%;
- and
- etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
8 more elements
An insulation material for a vacuum insulated structure, comprising:
- porous glass flakes comprising an acid insoluble silica phase;
- at least one opacifier;
- and
- at least one filler material.
1 more element
Dependencies are inferred from the claim text.