| 摘要 |
The invention relates to a thermal insulation panel, comprising: a housing with: a first main wall (1) and a second main wall (2) which each extend perpendicularly of a temperature gradient, and auxiliary walls (3) connecting both main walls and extending parallel to the temperature gradient, wherein the auxiliary walls connect with ribs to the main walls, and a filling (4) placed in the housing and able to withstand pressure forces, wherein the pressure within the housing is reduced to a value at which no heat transfer of any significance takes place, and wherein the housing is manufactured from metal, wherein a strip of the auxiliary wall contacting a rib is welded to the main wall, and that a welding strip is welded onto the weld. <??>With mere welding of a sufficiently thin metal foil it is practically impossible to obtain a weld of sufficient quality. With a sandwich weld it is possible to obtain a sufficiently strong and reliable welded connection, even when a very thin metal foil is used as auxiliary wall. <IMAGE> |
