Method of vacuum insulation and a vacuum heat insulator used therein
AssigneeDaidousanso Co., Ltd.
InventorAkira Yoshino
Life of this patent
Estimating the term…
Abstract
The invention is composed of a non-aluminium metallic foil with a ceramic particle dotted layer formed on one side thereof is used and the non-aluminium metallic foil is wound on the peripheral surface of an inner shell of a duplex shell body in a state that the ceramic particle dotted layer is faced inwardly, wherein the circumference of the multi-layeredly wound layer is covered with an outer shell of the duplex shell body, and a space between the inner shell and the outer shell is sealed and evacuated.
Claims6
A method of high vacuum heat insulation comprising steps of winding non-aluminum metallic foil multi-layerdly on a peripheral surface of an inner shell, the non-aluminum metallic foil being provided with a ceramic particle dotted layer formed on one side thereof, such that the ceramic particle dotted layer is faced inwardly during the step of winding, and an interval between each ceramic-particle of the ceramic particle dotted layer is set at about 50 to 500 .mu.m, providing an outer shell around the circumference of the multi-layeredly wound layer, sealing a space between the outer shell and the inner shell and evacuating the space in that state at a temperature tip to 350.degree. to 400.degree. C.
Dependencies are inferred from the claim text.