Vacuum insulated panel and method of making a vacuum insulated p

Details Vacuum insulated panel and method of making a vacuum insulated p Vacuum insulated panel and method of making a vacuum insulated p

1994-08-16

1996-03-19

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428624, 428634, 428 69, 428 76, 428920, 527881, 2989732, 29DIG44, B32B 106, B32B 1504, B32B 1516

Patent

active

055003052

ABSTRACT:
A vacuum insulated panel having high thermal insulating value and long vacuum life, and a method of making such a panel are disclosed. The panel is formed of peripherally welded metal wall members which define a cavity within which, in one embodiment, a compressed block of particulate material is disposed. The particulate material, in this embodiment, serves as a barrier to radiant thermal transmission through the panel, acts as a getter to maintain the vacuum in the panel, and supports the walls of the panel against collapse when the cavity is evacuated. The vacuum insulated panel can be covered with a polyurethane foam insulating material. According to a further embodiment of the invention, the filler within the cavity is a sandwich comprising a compressed layer of particulate material suspended between two layers of fiberglass. In such further embodiment, the layer of particulate material, which can be compressed in situ, serves as a getter and a barrier to radiant thermal transmission, while the fiberglass, making up the overall majority of the filler of the cavity, provides support for the panel members defining the cavity upon evacuation.

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