| 摘要 |
A vacuum insulation panel having flexible gas impermeable walls (30,32) formed in multiple substantially adjacent compartments (35,39). A thermal break may advantageously be provided around the perimeter to prevent conduction of heat from a warmer side of the panel to a colder side, which thermal break can be easily constructed by utilizing webs of gas impermeable material with the foil carried thereon such that the foil has a width somewhat less than the width of the film and with two separate pieces of the film rotated at 90 DEG to one another to provide a continuous area void of the foil. Multiple compartments (35,39) are utilized to enhance the long term thermal characteristics of the panel by "protecting" the vacuum characteristics of at least one of the compartments (35,39) by surrounding it with additional evacuated compartments. This results in a very minimal gas pressure gradient across the internal walls (31) forming the internal compartment to minimize gas and vapor permeation into it thus greatly enhancing the lifetime of the panel. Further, this permits strategic placing of gettering materials (34) such that gettering materials absorbing certain gases can be placed in the outer compartments and other gettering materials absorbing different gases can be placed in the internal compartments to enhance the lifetime of the panel. <IMAGE> |
