Multi-compartment vacuum insulation panels
US5018328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1989 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Dec 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/237
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum insulation panel having flexible gas impermeable walls formed in multiple substantially adjacent compartments. 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 firm rotated at 90.degree. to one another to provide a continuous area void of the foil. Multiple compartments are utilized to enhance the long term thermal characteristics of the panel by "protecting" the vacuum characteristics of at least one of the compartments by surrounding it with additional evacuated compartments. This results in a very minimal gas pressure gradient across the internal walls 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 such that gettering materials absorbing certain gases can be placed in the outer compartments and other gette…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.