Vacuum heat insulating material and refrigerating apparatus including the same
AssigneePanasonic Corporation
InventorsAkiko Yuasa, Yasuaki Tanimoto
Life of this patent
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Abstract
Vacuum heat insulating material having core material consisting of inorganic fibers and exterior covering material for storing the core material. The inorganic fibers include silicon oxide as a main component. The surface of the inorganic fibers has Si—OH/Si—O ratio equal to or higher than 0.1 and equal to or lower than 20. The vacuum heat insulating material has intersecting points at which the fibers are adhered to one another by an intermolecular interaction due to Si—OH groups.
Claims13
Vacuum heat insulating material comprising:
- a core material containing inorganic fibers, wherein the inorganic fibers include silicon oxide as a main component, a Si—OH/Si—O ratio of a surface of the inorganic fibers being made equal to or higher than 0.1 and equal to or lower than 1.0 by treating the inorganic fibers with moisture, and the core material being a formed body of the inorganic fibers provided by an adhesion of the inorganic fibers to one another by an intermolecular interaction of Si—OH groups existing at the surface of the inorganic fibers;
- and
- an exterior covering material having gas barrier performance, the vacuum heat insulating material being provided by depressurizing interior of the exterior covering material.
A refrigeration equipment having a refrigerating box at least including a vacuum heat insulating material, wherein:
- the vacuum heat insulating material comprises
- a core material containing inorganic fibers, wherein the inorganic fibers include silicon oxide as a main component, a Si—OH/Si—O ratio of a surface of the inorganic fibers being made equal to or higher than 0.1 and equal to or lower than 1.0 by treating the inorganic fibers with moisture, and the core material being a formed body of the inorganic fibers provided by an adhesion of the inorganic fibers to one another by an intermolecular interaction of Si—OH groups existing at the surface of the inorganic fibers;
- and
- an exterior covering material having gas barrier performance in which interior of the exterior covering material is depressurized.
Dependencies are inferred from the claim text.