Abstract:
By using vacuum heat insulator comprising a core made of laminated sheets of an inorganic fiber having a particular shape and composition as a vacuum heat insulator for a heat insulation box, a heat insulation box excellent in long-term heat insulating property and productivity can be provided. The vacuum heat insulator can be shaped easily. Therefore, a vacuum heat insulator suitable for a required heat insulation portion can be produced easily and applied to a heat insulation box. This property can increase coverage of the vacuum heat insulator on the heat insulation box, thus improving the heat insulating property of the heat insulation box. This can improve the heat insulating property and productivity of a refrigerator, thermal storage box, cold storage box, or vending machine, and contribute to an energy saving.
Abstract:
Vacuum heat insulator comprising a laminated core made of a plurality of sheets of inorganic fibers having 10 mu m or smaller in diameter and a certain composition including SiO2 as a main component, Al2O3, CaO, and MgO, a gas barrier enveloping member, and an absorbent. The vacuum heat insulator is characterized by having at least one groove formed therein after fabrication of the vacuum heat insulator. Further, the vacuum heat insulator is characterized by using inorganic fiber core of which a peak of distribution in fiber diameter lies between 1 mu m or smaller and 0.1 mu m or larger, and not containing binding material for binding the fiber material. Electronic apparatuses of the present invention use the vacuum heat insulator. With use of the vacuum heat insulator, electronic and electric apparatuses superior in energy saving and not to present uncomfortable feeling to the user can be provided.
Abstract:
By using vacuum heat insulator comprising a core made of laminated sheets of an inorganic fiber having a particular shape and composition as a vacuum heat insulator for a heat insulation box, a heat insulation box excellent in long-term heat insulating property and productivity can be provided. The vacuum heat insulator can be shaped easily. Therefore, a vacuum heat insulator suitable for a required heat insulation portion can be produced easily and applied to a heat insulation box. This property can increase coverage of the vacuum heat insulator on the heat insulation box, thus improving the heat insulating property of the heat insulation box. This can improve the heat insulating property and productivity of a refrigerator, thermal storage box, cold storage box, or vending machine, and contribute to an energy saving.
Abstract:
By using vacuum heat insulator comprising a core made of laminated sheets of an inorganic fiber having a particular shape and composition as a vacuum heat insulator for a heat insulation box, a heat insulation box excellent in long-term heat insulating property and productivity can be provided. The vacuum heat insulator can be shaped easily. Therefore, a vacuum heat insulator suitable for a required heat insulation portion can be produced easily and applied to a heat insulation box. This property can increase coverage of the vacuum heat insulator on the heat insulation box, thus improving the heat insulating property of the heat insulation box. This can improve the heat insulating property and productivity of a refrigerator, thermal storage box, cold storage box, or vending machine, and contribute to an energy saving.
Abstract:
A heat insulation box comprising: an inner box having an opening at least a part thereof; an outer box; a lid for closing the opening; and a vacuum heat insulator disposed between said inner box and said outer box, said vacuum heat insulator comprising: a core made of a fibrous laminate of at least two layers of sheets containing at least SiO2 ,opposing faces of said sheets in contact with each other; and a laminated film sandwiching said core.
Abstract:
A method of producing an open cell rigid polyurethane foam which comprises reacting a polyol with a polymethylene polyphenyl polyisocyanate prepolymer with a monool exemplified by diethylene glycol monomethyl ether by use of a substitute such as 1,1-dichloro-1-fluoroethane or methylene chloride as a volatile blowing agent, or a mixture of the volatile blowing agent with water, for trichlorofluoromethane as a blowing agent in the presence of a catalyst, a foam stabilizer and a cell opening agent. The resultant open cell rigid polyurethane foam has a cell size of about 200-250 microns, and is suitable for use, for example, as a core material in a vacuum heat insulating material. The foam may be enclosed in a container under a vacuum of 0.1-0.01 mmHg readily attainable to provide a vacuum heat insulating material of a high heat insulating performance.
Abstract:
A portable information appliance such as notebook computers, provided with a high-performance insulating material able to cut off heat transfer between an internal heating unit and a device's case and restricting a rise in the device surface temperature. A portable information appliance provided with a high-performance insulating material able to cut off heat transfer between a heating unit and an add-on unit attaching case, restricting a rise in external add-on unit temperature, and preventing erroneous operations. This information appliance is provided with an insulating material for cutting off an internal heating unit from a device case, an insulating material for cutting off a heating unit from an add-on unit attaching case, and a radiating sheet, the insulating material being a vacuum insulating material with inorganic fibers used as a core material.
Abstract:
The use of a vacuum heat insulation material using a core material formed by laminating inorganic fiber sheets of particular shape and composition provides a heat insulation box which is superior in time-varying heat insulation performance and in productivity. A vacuum heat insulation material which is easy to pattern; therefore, a vacuum heat insulation material which is suitable for portions requiring heat insulation can be easily prepared and applied to a heat insulation box. This property improves the covering ratio of the vacuum heat insulation material to the heat insulation box and also improves the heat insulation performance of the heat insulation box. For this reason, it is possible to improve the heat insulation property of refrigerators, heat insulation appliances, cold insulation appliances, vending machines, etc. and to improve productivity, and contributes to energy saving.