Integrated vacuum panel insulation for thermal cabinet structures
US6109712A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2201/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A cabinet structure is thermally insulated by placing a first insulation material directly upon a surface of the cabinet structure and then covering the insulation material with a barrier sheet that is affixed along an annular edge portion thereof to the cabinet structure. In this manner, the insulation material is retained within a chamber defined between the barrier sheet and the cabinet structure. This chamber is then evacuated to a low pressure, generally in the order of 0.1-10 mm Hg, and sealed. This integrated vacuum panel insulation arrangement is particularly advantageous for use in constructing entire thermal cabinets by providing a blank that defines multiple walls of the cabinet; arranging the insulation on the inner surfaces of the blank; placing one or more barrier sheets over the insulation; attaching edges of the barrier sheet(s) to the inner surfaces of the walls so as to define respective chambers between the barrier sheet(s) and the respective inner wall surfaces; evacuating each of the chambers; and sealing the chambers. When used with a cabinet that includes an additional liner, this insulation arrangement is preferably used on the shell of the cabinet and, foll…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.