Vacuum insulation material and manufacturing method thereof
AssigneeMitsubishi Electric Corporation
InventorsToshio Shinoki, Shunkei Suzuki
Life of this patent
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Abstract
A vacuum insulation material includes a plurality of convex protrusions provided on a surface of a core material that is present inside of the bent vacuum insulation material when it is used in a bent state, and so that the core material on which the convex protrusions are provided in advance is inserted into an outer covering material and vacuum-sealed with the outer covering material. By reducing a contact area between the convex protrusions and an inner side surface of the outer covering material in contact with the surface on which the convex protrusions are provided, it is possible to reduce a frictional force between the core material and the outer covering material.
Claims17
A vacuum insulation material comprising:
- a core material comprising a stack of a plurality of fiber sheets, the stack including a first fiber sheet having one surface on which a plurality of convex protrusions are formed, wherein the stack is arranged such that the one surface of the first fiber sheet is an outer surface of the core material;
- and
- a flexible outer covering material, wherein the core material is inserted in the outer covering material and is vacuum-sealed in the outer covering material,
- wherein the vacuum insulation material is bent so that the one surface of the first fiber sheet on which the convex protrusions are formed is located at a radial inside side of the bend.
A vacuum insulation material comprising:
- a core material comprising a stack of a plurality of fiber sheets, the stack including a first fiber sheet having one surface on which a plurality of convex protrusions are formed, wherein the stack is arranged such that the one surface of the first fiber sheet is an outer surface of the core material;
- and
- a flexible outer covering material, wherein the core material is inserted in the outer covering material and is vacuum-sealed in the outer covering material, wherein
- the fiber sheets include a second fiber sheet including a plurality of convex protrusions formed on one surface, in addition to the first fiber sheet, and
- one surface of the second fiber sheet becomes an another outside surface of the core material.
A vacuum insulation material comprising:
- a core material comprising a stack of a plurality of fiber sheets, the stack including a first fiber sheet having one surface on which a plurality of convex protrusions are formed, wherein the stack is arranged such that the one surface of the first fiber sheet is an outer surface of the core material;
- and
- a flexible outer covering material, wherein the core material is inserted in the outer covering material and is vacuum-sealed in the outer covering material,
- wherein all of the fiber sheets are fiber sheets on one surface of each of which the convex protrusions are formed,
- wherein the fiber sheets are stacked so that the one surface of the fiber sheet on which the convex protrusions are formed is faced in an opposite direction halfway in a stacking direction, and is reversely stacked.
A vacuum insulation material comprising:
- a core material comprising a stack of a plurality of fiber sheets, the stack including a first fiber sheet having one surface on which a plurality of convex protrusions are formed, wherein the stack is arranged such that the one surface of the first fiber sheet is an outer surface of the core material;
- and
- a flexible outer covering material, wherein the core material is inserted in the outer covering material and is vacuum-sealed in the outer covering material,
- wherein
- the fiber sheets include a configuration of stacking fiber sheets on the one surface of which the convex protrusions are formed to be adjacent to each other, and
- the adjacent fiber sheets are stacked so that the convex protrusions do not overlap one another.
A vacuum insulation material comprising:
- a core material comprising a stack of a plurality of fiber sheets, the stack including a first fiber sheet having one surface on which a plurality of convex protrusions are formed, wherein the stack is arranged such that the one surface of the first fiber sheet is an outer surface of the core material;
- and
- a flexible outer covering material, wherein the core material is inserted in the outer covering material and is vacuum-sealed in the outer covering material,
- further comprising a slip film between the one surface of the core material and the flexible outer covering material.
Dependencies are inferred from the claim text.