Method of manufacturing vacuum heat insulator and vacuum heat insulator
AssigneeYazaki Energy System Corporation
InventorTakuju NAKAMURA
Life of this patent
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Abstract
A method of manufacturing a vacuum heat insulator includes preparing a hollow body that has heat resistance equal to or higher than a level to withstand a flame of 781° C. for 20 minutes and that has a hollow portion in the hollow body, introducing, into the hollow portion of the hollow body, an inorganic foaming agent that has the heat resistance and foaming the foaming agent to form a foam having open cells, or introducing an inorganic foam having the heat resistance and open cells, and then solidifying the foam, and evacuating the hollow portion after the foam is solidified or during the solidification of the foam.
Claims10
A method of manufacturing a vacuum heat insulator comprising:
- preparing a hollow body that has heat resistance equal to or higher than a level to withstand a flame of 781° C. for 20 minutes and that has a hollow portion in the hollow body;
- introducing, into the hollow portion of the hollow body, an inorganic foaming agent that has the heat resistance and foaming the foaming agent to form a foam having open cells, or introducing an inorganic foam having the heat resistance and open cells, and then solidifying the foam;
- and
- evacuating the hollow portion after the foam is solidified or during the solidification of the foam.
A vacuum heat insulator comprising:
- a hollow body that has heat resistance equal to or higher than heat resistance to withstand a flame of 781° C. for 20 minutes and that has a hollow portion formed in the hollow body;
- and
- an inorganic foam that spreads in the hollow portion of the hollow body, is formed with open cells, is foamed and solidified, and has the heat resistance,
- wherein the hollow portion is evacuated.
Dependencies are inferred from the claim text.