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    • 2. 发明专利
    • Vacuum insulating structure
    • GB2451614A
    • 2009-02-11
    • GB0812583
    • 2008-07-09
    • MITSUBISHI ELECTRIC CORP
    • NOMURA KYOKOIWATA SYUICHITAKAGI TSUKASAHANAOKA SHOTSUJIHARA MASANORI
    • F16L59/065B32B5/12B32B5/26F17C3/08
    • A vacuum thermal insulating structure for a thermal insulating case comprises a gas barrier container (outer jacket) having air-impermeability and a core material 5 and optionally a gas adsorbent 6, which are enclosed in the outer jacket under a pressure reduced to a predetermined vacuum level. The core material 5 has a layered structure in which a plurality of sheet-like organic fiber assemblies (fiber assemblies) 1 are laminated. The fiber assemblies may be composed of a first set of organic fibers arranged at a predetermined interval and a second set of organic fibers arranged perpendicularly to the first set and at a predetermined interval. The organic fibers assembly may be formed in a sheet by pressing and welding continuous organic fibers together. The core may be formed by folded first and second organic fibers assemblies (1x and 1y) laminated so as to cross each other. The organic fibers may be polyester, polypropylene, polylactic, aramid and LCP (liquid crystal polymer). A thermal insulation wall 12 for a refrigerator comprises the thermal insulation structure 7, spacer 8 and polyurethane foam 11. The thermal insulation structure has improved handling and thermal insulation properties and recyclability.