Insulation for refrigerators and freezers
AssigneeElectrolux Research & Innovation Aktiebolag
InventorRutger A. Roseen
Life of this patent
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Abstract
Heat insulation is provided for a refrigerator or freezer. The insulation includes a closed cell material, which is placed in a hermetically closed space (13) surrounded by a diffusion-tight shell. The space communicates with a vacuum source, and a gas diffuses through the cells five times faster than air gasses. The material does not achieve its full insulating properties until the refrigerator has been used.
Claims11
Heat insulation for refrigerator or freezer comprising a material placed in a hermetically sealed space (13) and surrounded by a diffusion-tight shell, characterized in that the material in the space (13) communicates with a vacuum source (18), and the material comprises closed cells with a gas which can diffuse through the cell structure with a velocity which is at least five times faster than air gasses whereby said insulation does not achieve its full insulating properties until the refrigerator has been used.
Dependencies are inferred from the claim text.