The invention provides an edge insulation piece (1) comprising a thin sheet of material (2) which is manipulated by bending, rolling or other forming to effect a long conductive path within a small cross-sectional area. In a preferred embodiment, a thin layer of insulation material (3) is interleave
The invention provides an edge insulation piece (1) comprising a thin sheet of material (2) which is manipulated by bending, rolling or other forming to effect a long conductive path within a small cross-sectional area. In a preferred embodiment, a thin layer of insulation material (3) is interleaved between two layers of the thin sheet of material (2), which is folded around the insulation layer (3) during forming of the edge piece (1). A further layer of insulation material (4) may be rolled within the edge piece (1) as it is. This interleaving of thin layers of insulation material (3, 4) prevents the surfaces of the thin sheet of material (2) from touching each other and also insulates the material (2) from the top and bottom panels (5, 6) of a vacuum insulation panel (7) when the edge piece (1) is inserted around the edge of the panel (7). The edge piece (1) may be further coated over part or all of its length with a low emissivity material (13) to minimise radiative losses. Alternatively or additionally the coating (13) may comprise a gas impermeable layer to form a gas impermeable barrier.
대표청구항▼
The invention claimed is: 1. An edge insulation piece for an insulation article, the edge insulation piece fitted between a first panel and a second panel of an insulation article, wherein said first panel and said second panel are opposite one another and parallel to one another, wherein a first p
The invention claimed is: 1. An edge insulation piece for an insulation article, the edge insulation piece fitted between a first panel and a second panel of an insulation article, wherein said first panel and said second panel are opposite one another and parallel to one another, wherein a first perpendicular direction comprises a direction extending perpendicularly from said first panel to said second panel, wherein a second perpendicular direction comprises a direction extending perpendicularly from said second panel to said first panel, and wherein a planar direction comprises a direction that extends parallel with the plane of said first and second panels, the edge insulation piece comprising a sheet of material having two end portions, wherein a first end portion is joined to an outer side portion of the first panel and wherein a second end portion is joined to an outer side portion of the second panel, wherein the outer side portion of the first panel and the outer side portion of the second panel are perpendicular to the planar direction, wherein the sheet of material is shaped in a long conductive path from said first panel to said second panel within a small cross-sectional area between the two end portions, wherein the path of the sheet in cross-section comprises at least in part a spiral path wherein small portions of the sheet are folded to extend in said planar direction, at least one portion of the sheet is folded to extend in said first perpendicular direction, and at least one further portion of the sheet is folded to extend in said second perpendicular direction, the spiral path comprising portions of the sheet folded in at least the first and second perpendicular directions to form an inward spiral path in towards the centre of the edge insulation piece and the folding of the portions then being reversed to form an outward spiral path, portions of the sheet forming the outward spiral path being adjacent but not contacting portions of the sheet forming the inward spiral path and wherein the folded sheet does not contact the panels at any point other than at its end portions. 2. The edge insulation piece according to claim 1, wherein part or all of the surfaces of the sheet of material are coated with a low emissivity material. 3. The edge insulation piece according to claim 1, wherein part or all of the surfaces of the sheet of material are coated with a gas-impermeable layer. 4. The edge insulation piece according to claim 1, further comprising a layer of insulation material sandwiched between layers of the sheet of material to improve insulation between each layer and to prevent contact of any part of the sheet of material with adjacent layers. 5. The edge insulation piece according to claim 4, wherein the insulation is variable in thickness depending upon its relationship to hot and cold surfaces of the insulation article. 6. The edge insulation piece according to claim 1, wherein the edge insulation piece is formed by folding or rolling the sheet of material. 7. The edge insulation piece according to claim 6, wherein the sheet is folded to form two adjacent layers connected at a fold end. 8. The edge insulation piece according to claim 7, wherein the further folded sheet is folded or rolled to form the edge insulation piece. 9. The edge insulation piece according to claim 8, further comprising a layer of insulation material sandwiched between the two layers of the folded sheet. 10. The edge insulation piece according to claim 9, further comprising a further layer of insulation material positioned adjacent to one of the layers of the folded sheet and folded or rolled within the layers of the folded or rolled edge insulation piece. 11. The edge insulation piece according to claim 9, wherein the edge insulation piece has means to join it to separated parts of an article, the means to join the edge insulation piece to an article comprising extending end portions that can be attached to respective separated parts of such an article by welding or an adhesive. 12. The edge insulation piece according to claim 11, wherein the extending end portions are covered with an inverted ‘V’ or ‘top hat’ shaped sealing means. 13. The edge insulation piece according to claim 1, wherein the edge insulation piece comprises a corner portion, the edge insulation piece comprising a sheet of material with extending portions corresponding to the corner portion. 14. The edge insulation piece according to claim 13, wherein the extending portions are triangular in shape. 15. The edge insulation piece according to claim 13, wherein the corner portion comprises a radiused rolled corner. 16. A vacuum insulation panel comprising an edge insulation piece in accordance with claim 13. 17. An edge insulation piece for an insulation article, the edge insulation piece fitted between a first panel and a second panel of an insulation article, wherein said first panel and said second panel are opposite one another and parallel to one another, wherein a first perpendicular direction comprises a direction extending perpendicularly from said first panel to said second panel, wherein a second perpendicular direction comprises a direction extending perpendicularly from said second panel to said first panel, and wherein a planar direction comprises a direction that extends parallel with the plane of said first and second panels, the edge insulation piece comprising a sheet of material having two end portions, wherein a first end portion is joined to an outer side portion of the first panel and wherein a second end portion is joined to an outer side portion of the second panel, wherein the outer side portion of the first panel and the outer side portion of the second panel are perpendicular to the planar direction, wherein the sheet of material is shaped in a long conductive path from said first panel to said second panel within a small cross-sectional area between the two end portions, wherein the path of the sheet in cross-section comprises a path wherein a small portion of the sheet is folded to extend in said planar direction, a portion of the sheet is folded to extend in said first perpendicular direction, and a plurality of further portions of the sheet comprises a bellows arrangement, wherein the sheet is folded into a wave or zig-zag path arranged perpendicularly with respect to said planar direction and, wherein each further portion in said bellows arrangement comprises a portion folded to extend in said second perpendicular direction and a portion folded to extend back again in the first perpendicular direction, and wherein the folded sheet does not contact the panels at any point other than at its end portions. 18. The edge insulation piece according to claim 17, wherein part or all of the surfaces of the sheet of material are coated with a low emissivity material. 19. The edge insulation piece according to claim 17, further comprising a layer of insulation material sandwiched between layers of the sheet of material to improve insulation between each layer and to prevent contact of any part of the sheet of material with adjacent layers. 20. A vacuum insulation panel according to claim 17, wherein the edge insulation piece comprises a corner portion, the edge insulation piece comprising a sheet of material with extending portions corresponding to the corner portion.
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이 특허에 인용된 특허 (2)
Taylor Donald M. (R.R. #1 Orangeville ; Ontario CAX L9W 2Y8), Insulative spacer/seal system.
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