초록 ▼

The invention concerns a multi-layered heat insulating window panel for constructing wall and/or roof surfaces of a greenhouse, comprising: a frame structure, a first pane (12), particularly a customary glass pane which has an edge that is framed and attached in the frame structure and which is kept

The invention concerns a multi-layered heat insulating window panel for constructing wall and/or roof surfaces of a greenhouse, comprising: a frame structure, a first pane (12), particularly a customary glass pane which has an edge that is framed and attached in the frame structure and which is kept in position by the frame structure, and a supplementary pane, for example, deep drawn from plastic material, a supplementary pane on at least one surface of the first glass pane, forming a double-glazing arrangement, wherein the supplementary pane has a tray-like shape and the circumferential edge region is glued hermetically to the first pane and wherein the cavity is evacuated and in the interior the supplementary pane is supported by means of a number of supporting elements in order to prevent the pane from collapsing because of the external atmospheric pressure.

대표청구항 ▼

1. A multi-layered heat insulating window panel (10), comprising: a first pane (12) anda supplementary pane (14) on at least one surface of the first pane (12), forming at least one double-glazing arrangement,wherein the double-glazing arrangement comprises an assembly edge (53) which can be framed

1. A multi-layered heat insulating window panel (10), comprising: a first pane (12) anda supplementary pane (14) on at least one surface of the first pane (12), forming at least one double-glazing arrangement,wherein the double-glazing arrangement comprises an assembly edge (53) which can be framed and attached in the frame structure (36) and which is kept in position by the frame structure (36) after being installed, wherein the supplementary pane (14) has a tray-like shape with an inner window area (16) and an edge region (18) surrounding the window area, wherein the edge region (18) has a sealing frame (43) with a circumferential sealing surface (44) and a connecting frame (48) which connects the sealing frame (43) with the window area (16), wherein the connecting frame (48) extends vertically or transverse to the window plane (E) so that the window area (16) and the sealing surface (44) are offset in parallel in relation to the window plane (E) and the window area (16) is mostly spaced apart from the first pane, forming a sandwich-like cavity (34) in the window area between the first pane (12) and the supplementary pane (14), wherein the sealing surface (44) forms a complete circumferential hermetic connection with the first pane (12) and the cavity (34) between the first pane (12) and the supplementary pane (14) is closed in vacuum-tight manner, wherein the window area (16) comprises a number of supporting elements (26, 26′, 26″, 26′″) protruding from the plane (F) of the window area, and wherein the supplementary pane (14) is designed in the form of a plastic molding, and the supporting elements in the direction of the first pane (12) are formed as an integral part of the supplementary pane (14) and form a supporting grid (28) with a pre-defined maximum spacing between the supporting elements, wherein the cavity (34) is evacuated and the supporting grid (28) of the supplementary pane (14) firmly supports the supplementary pane (14) and the first pane (12) against each other in order to prevent collapsing due to the external atmospheric pressure. 2. A window panel (10) according to claim 1, wherein the first pane (12) includes a planar float glass pane or a planar translucent plastic sheet. 3. A window panel (10) according to claim 1 or 2, wherein the supplementary pane (14) is installed on the surface (10a) of the first pane (12) facing away from the sun. 4. A window panel (10) according to claim 1, wherein the supplementary pane (14) with the supporting elements (26, 26′, 26″, 26′″) and the edge region (18) is deep drawn or integrally molded from a plastic sheet. 5. A window panel (10) according to claim 1, wherein the supplementary pane (14) consists of PMMA, PVC, PETG, polycarbonate, epoxy, polyester or fiber glass plastic material. 6. A window panel (10) according to claim 1, wherein the supplementary pane (14) is glued with an adhesive (46) to the first pane (12) between the sealing surface (44) and the first pane (12). 7. A window panel (10) according to claim 6, wherein the supporting elements (26, 26′, 26″, 26′″) are spaced from the first pane (12) in glued but not yet evacuated condition and only rest on the first pane (12) through the external atmosphere resulting from evacuation. 8. A window panel (10) according to claim 1, wherein in the window area (16) integral stabilizing ribs (24) are molded in the supplementary pane (14) which extend parallel to the plane of the window area (F) and form a two-dimensional crossed line grid (22) and divide the window area in several fields (20), wherein even in evacuated condition the line grid (22) does not completely rest against the first pane (12) pane so that the cavity cells of the respective fields (20) are connected to one another. 9. A window panel (10) according to claim 8, wherein the supporting elements (26, 26′, 26″, 26′″) are arranged at the intersections of the line grid (22), forming a two-dimensional crossed bridge structure, wherein the supporting elements (26, 26′, 26″, 26′″) are acting as bridge pillars and the stabilizing ribs (24) as arches between the bridge pillars. 10. A window panel (10) according to claim 8 or 9, wherein each field (20) in the supplementary pane (14) is warped. 11. A window panel (10) according to claim 1, wherein a sheet or foil is applied to the surface (10a) of the supplementary pane (14) facing away from the first pane (12). 12. A window panel (10) according to claim 11, wherein the complete circumference of the sheet or foil (30) is hermetically connected with a ridge of the edge region (18) of the supplementary pane (14) and the space (40) between the supplementary pane (14) and the sheet or foil (30) is evacuated. 13. A window panel (10) according to I claim 1, comprising a further molded supplementary pane (14a), which is attached to the supplementary pane (14) and in which the cavity (34a) between the first and second supplementary pane can be evacuated.