Patent ID: 9157230
Filing Date: 2015-10-13
Classification: B23K,E04B,F25D,Y02A,Y02B,Y10T

Abstract:
1. A method for making a vacuum insulated panel for decreasing heat leakage from a structure, comprising: enclosing a core of the vacuum insulation panel between two thin sheet metal foils, each thin sheet metal foil is thinner than 0.003 inch, has a thermal conductivity lower than 26 W/(m×K), the thin sheet metal foil material selected from the group consisting of stainless steel, titanium, and other low thermal conductivity metals; welding said two metal foils directly together continuously on three sides adjacent the edges of said metal foils, forming an enclosure between said metal foils, said enclosure having at least one opening communicating with an interior of said enclosure; clamping the remaining open side of said two metal foils together; evacuating gas from the enclosure through said opening; and welding the remaining open side of said two metal foils together after the enclosure formed by said two metal foils has been evacuated of gas.