Composite wall element for thermal and acoustic insulation

Claim 1

In a composite wall element for thermal and acoustic insulation of walls, ceilings, floors and the like, comprising: a. an outer wall element, said outer wall element being pressure resistant and imparting to the composite wall element the requisite structural strength and integrity, b. an inner insulating wall element positioned within and enclosed by said outer wall element, said inner insulating wall element including 1. an outer continuous covering fitting tightly within said outer wall element, said covering being provided on its inner surface with means for vapor-tight sealing said covering, 2. first spacer means lining the interior of said covering and said sealing means to impart the desired shape and rigidity to said covering, the inwardly facing surfaces of said spacing means being provided with reflecting means which reflect toward the inner cavity formed by said spacer means, 3. a reflective foil positioned within said cavity and spaced from said reflecting means, 4. a plurality of spaced, second spacer means positioned on either side of said reflective foil and extending between said foil and said reflecting means, said second spacer means forming radiation chambers, and c. passage means communicating the interior of said composite element with the exterior thereof whereby a supply of air may be admitted to and exhausted from said radiation chambers.