Insulating wall unit

Abstract

A wall unit comprising panels lying at opposite faces of said unit, a seal arranged between the margins of said panels, and an insulation occupying the cavity between said panels, wherein the improvement comprises at least one insulating group extending parallel to said panels and comprising two foils capable of reflecting thermal radiation and chambers lying between said foils, the walls of which consist of insulating material. The cavity between said panels may be evacuated or it may be filled with dry air or a dry gas.

I claim: 
     
       1. In a wall unit comprising panels laying at opposite faces of said unit, a seal arranged between the margins of said panels to air-tightly seal the wall unit, and an insulation occupying the cavity between said panels, the improvement which consists in additionally providing the wall unit at its one side with an additional panel, spaced from the wall unit and forming therewith an associated cavity, said additional panel being permeable to condensed moisture, air, and vapors and allowing the condensed moisture deposited thereon to pass therethrough into said associated cavity, said associated cavity serving to eliminate moisture condensed on said additional panel. 
     
     
       2. The wall unit of claim 1, in which the additional panel is a gypsum panel. 
     
     
       3. The wall unit of claim 1, in which spacing means are provided in the associated cavity. 
     
     
       4. The wall unit of claim 1, in which the associated cavity is air-tightly sealed toward the wall unit. 
     
     
       5. The wall unit of claim 4, in which means are provided to reduce the vapor pressure in the associated cavity sufficiently to prevent condensation of water vapor therein. 
     
     
       6. The wall unit of claim 4, in which said means is means to evacuate the associated cavity. 
     
     
       7. The wall unit of claim 4, in which said means comprises a dry gas atmosphere in said associated cavity. 
     
     
       8. The wall unit of claim 4, in which said means comprises dry air in said associated cavity. 
     
     
       9. The wall unit of claim 1, in which the walls of the associated cavity are provided with foils capable of reflecting thermal radiation, the reflecting foil adjacent the additional panel being permeable to condensed moisture. 
     
     
       10. The wall unit of claim 9, in which at least the surface of the additional panel opposite the one panel of the wall unit is provided with a perforated reflecting foil. 
     
     
       11. In a wall unit comprising panels lying at opposite faces of said unit, a seal arranged between the margins of said panels to air-tightly seal the wall unit, and an insulation occupying the cavity between said panels, said panels, seal, and insulation forming the primary wall element, the improvement which consists in additionally providing the wall unit at its one side with an additional panel, said panel being directly attached to the one panel of the wall unit, said additional panel being permeable to moisture and thus permitting transfer of the water condensed on said additional panel to pass through said additional panel and said panel of the wall unit into the adjacent cavity of the primary wall unit, said cavity being provided with means to eliminate the moisture condensed on the additional panel and introduced thereinto through the additional panel and the one panel of the wall unit, said additional panel being permeable to condensed moisture, air, and vapors.