Window or door leaf and window or door comprising same

Abstract

The present invention relates to a window or door sash (1) comprising (a) a sash frame (2) formed from sections of a window or door sash profile (3), which has a rebate base (8) and an outer overlap (6), (b) a glazing bead (10) anchored in a glazing bead groove (9) of the window or door sash profile (3), which together with the rebate base (8) and the outer overlap (6) forms a rebate space (11) that is at least partially open on one side, wherein the glazing bead (10) comprises at least one glazing seal (15, 15'); and (c) an insulating glazing unit (12) received at the end face of the rebate space (11), which comprises at least two glass panes (13, 13') whose space between them is pressurized and which has a glass edge (14) facing the rebate base (8);comprising, wherein the at least one glass seal (15, 15') bears at least partially against the glass pane (13') facing it, wherein the window or door sash (1) is characterized according to the invention in that, viewed in cross-section of the window or door sash (1), the distance between the glass edge (14) and the rebate base (8) is at most 15 mm, preferably at most 10 mm. Furthermore, the present invention also relates to a window (100) or a door comprising a frame (4) or a jamb and such a window or door sash (1) received therein in the closed state of the window (100) or the door.

Description

[0001] The present invention relates to a window or door sash comprising (a) a sash frame formed from sections of a window or door sash profile, which has a rebate base and an outer overlap, (b) a glazing bead anchored in a glazing bead groove of the window or door sash profile, which glazing bead together with the rebate base and the outer overlap forms a rebate space which is at least partially open on one side, wherein the glazing bead comprises at least one glass seal; and (c) an insulating glazing unit received in the rebate space at the end face, which comprises at least two glass panes, the space between which is subjected to a negative pressure and which has a glass edge directed towards the rebate base, wherein the at least one glass seal rests at least partially against the glass pane facing it.Furthermore, the present invention also relates to a window or a door comprising a frame or casing and such a window or door sash received therein.

[0002] Due to their outstanding thermal insulation properties, vacuum glazing is increasingly being used as a panel element in doors and windows. Such vacuum glazing has Ug values ​​below 1.0 W / (m2K), often even in the range of 0.4 W / (m2K) to 0.5 W / (m2K). However, the use of such vacuum glazing in doors and windows poses the problem that, when there are large differences between the outside temperature and the room temperature, there is a risk of condensation forming in this area due to the low surface temperature at the transition from the vacuum glazing to the glazing bead. This risk is accompanied by the corresponding risk of mold growth.

[0003] To solve this problem, WO 2020 / 187977 A1 proposes arranging a thermal coupling element or heat-conducting element with a high thermal conductivity compared to the frame material in the area of ​​the edge seal on the room side, spaced from the vacuum insulating glazing. This element has a high thermal conductivity compared to the frame material. This transfers heat energy from the warmer side of the room to the edge seal, increasing the surface temperature in the area of ​​the edge seal and thus reducing the risk of condensation. The problem with the solution according to WO 2020 / 187977 A1 is that the heat transfer to the edge seal area via the thermal coupling element may not be sufficient, particularly at low outside temperatures, to largely prevent the risk of condensation in this area of ​​the transition from the vacuum insulating glazing to the glazing bead.

[0004] A window or door sash according to the preamble of claim 1 is known from DE 10 2019 107 996 A1. Another window or door sash with vacuum insulating glazing is disclosed in WO 2014 / 008018 A1.

[0005] This is where the present invention comes in. Its objective is to provide a window or door sash that overcomes the disadvantages of the prior art. In particular, the risk of condensation forming in the area of ​​the transition from the vacuum insulating glazing to the glazing bead is effectively reduced. Furthermore, the present invention provides a window or door comprising such a window or door sash.

[0006] These and other objects are achieved by a window or door sash having the features of claim 1 or by a window or door having the features of claim 7. Preferred embodiments of the present invention are specified in the dependent claims.

[0007] According to the present invention, it was recognized that the formation of condensation in the region of the transition from the vacuum insulating glazing to the glazing bead is effectively prevented by shifting the course of the isotherms important for condensation formation in a temperature range of + 10°C to + 13°C at a small distance of no more than 15 mm between the glass edge of the vacuum insulating glazing and the rebate base in such a way that these isotherms, particularly in the region of the transition from the vacuum insulating glazing to the glazing bead, no longer run along the room-side surface of the vacuum insulating glazing, nor through the vacuum insulating glazing and the sash profile, nor through the volume occupied by the window sash. This significantly reduces the risk of condensation and thus the formation of mold.

[0008] Accordingly, the present invention consists in providing a window or door sash comprising (a) a sash frame formed from sections of a window or door sash profile, which has a rebate base and an outer overlap, (b) a glazing bead anchored in a glazing bead groove of the window or door sash profile, which, together with the rebate base and the outer overlap, forms a rebate space that is at least partially open on one side, wherein the glazing bead comprises at least one glass seal; and (c) an insulating glazing unit received in the rebate space at the end face, which comprises at least two glass panes, the space between which is subjected to a negative pressure and which has a glass edge directed towards the rebate base, wherein the at least one glass seal rests at least partially against the glass pane facing it,wherein a heat-conducting element is arranged between the glazing bead and the rebate base, and the heat-conducting element rests at least partially against the insulating glazing, wherein the heat-conducting element comprises at least one support part with which the heat element rests on the rebate base, wherein the window or door sash is characterized according to the invention in that, viewed in the cross-section of the window or door sash, the distance between the glass edge and the rebate base is at most 15 mm, preferably at most 10 mm, and the at least one support part of the heat element is designed as a profile. Furthermore, the present invention also relates to a window or door comprising a frame or casing and a window or door sash received therein when the window or door is closed.

[0009] In alternative embodiments of the window or door sash according to the invention, the distance between the glass edges, viewed in the cross-section of the window or door sash, can be at most 14 mm, at most 13 mm, at most 12 mm, at most 11 mm, at most 9 mm, at most 8 mm, at most 7 mm, at most 6 mm, at most 5 mm, at most 4 mm, at most 3 mm, at most 2 mm, or at most 1 mm. Particularly preferably, the glass edge of the vacuum insulating glazing rests at least partially directly or at least via a glazing element on the rebate base. In this way, the deep glass recess has a maximum effect on the shift of the relevant isotherms.

[0010] As used herein, the terms "window or door sash" and "frame" preferably refer to a sash or frame of a plastic window or plastic door. However, wooden windows or wooden doors, as well as composite windows and composite doors, are also contemplated. If the sash is a plastic window or plastic door, the preferred main material for the sash profile of the window or door sash according to the invention is polyvinyl chloride (PVC), in particular rigid PVC (PVC-U) or glass fiber-reinforced PVC, to which additives such as stabilizers, plasticizers, pigments, and the like are added. PVC can be easily dyed or colored and hardly absorbs water.

[0011] With regard to the window or door sash according to the invention, it can be helpful if, viewed from the outside, at least the glass seal of the glazing bead furthest from the rebate base in the cross-section of the sash projects beyond the upper dimension of the outer overlap of the window or door sash profile. This measure also contributes to ensuring that the isotherms important for condensation formation in a temperature range of +10°C to +13°C do not run along the room-side surface of the vacuum insulating glazing, so that the risk of condensation formation in this area is further reduced. The feature of at least the glass seal of the glazing bead furthest from the rebate base projecting beyond the outer overlap can also function as a characterizing feature of an independent claim, even independently of the feature of the distance between the glass edge and the rebate base of a maximum of 15 mm.

[0012] According to the present invention, a heat-conducting element is arranged between the glazing bead and the rebate base. Such a heat-conducting element transports heat energy from the interior of the room to the surface of the vacuum insulating glazing, thus helping to prevent condensation in this area. According to the present invention, the heat-conducting element rests against the insulating glazing at least in sections.

[0013] It can also be useful if the heat-conducting element comprises a material with a thermal conductivity of over 15 W / mK, preferably over 150 W / mK. A material with high conductivity promotes heat transfer to the areas on the surface of the vacuum insulating glazing that are relevant for condensation formation. To this end, the heat-conducting element comprises a metallic material at least in some areas. For example, metals such as stainless steel with a thermal conductivity of approximately 15 W / mK, unalloyed steel with a thermal conductivity of approximately 50 W / mK, aluminum with a thermal conductivity of approximately 160 W / mK, and copper with a thermal conductivity of approximately 400 W / mK can be used. In general, aluminum has proven to be a particularly suitable conductive material for the heat-conducting element due to its high thermal conductivity and low environmental impact.By using aluminum, the area on the surface of the vacuum insulating glazing that is relevant for condensation can be linked to the room temperature in a particularly effective manner.

[0014] This connection to the room temperature can be promoted in preferred embodiments of the window or door sash according to the invention in that the distance between the heat-conducting element and the side of the glazing bead facing the rebate base is at most 2 mm, preferably at most 1.5 mm, particularly preferably at most 1 mm, and in particular at most 0.7 mm. In particularly preferred embodiments of the present invention, the heat-conducting element rests at least partially against the glazing bead. Accordingly, the heat-conducting element can, for example, be an aluminum foil or an applied aluminum layer arranged on the side of the glazing bead facing the rebate base. Glazing beads made entirely of aluminum can also be used as heat-conducting elements.

[0015] It can also be beneficial if the heat-conducting element extends over at least 85% of the distance between the insulating glazing and the glazing bead groove, preferably over at least 90% of the distance between the insulating glazing and the glazing bead groove, viewed in the cross-section of the window or door sash. This measure ensures that the isotherms in the temperature range of +10°C to +13°C, which are important for condensation, run in sections in the area of ​​the glazing bead almost parallel to the heat transfer direction and thus extend into the volume enclosed by the vacuum insulating glazing and the sash profile, as well as through the window sash. This further reduces the risk of condensation.

[0016] According to the present invention, the heat-conducting element comprises at least one support part, with which the heat-conducting element rests on the rebate base. The heat-conducting material can then be applied to the support part, or the support part can consist entirely of the heat-conducting material. In this way, the heat-conducting element can be easily inserted into the rebate area of ​​the window or door sash according to the invention. According to the invention, such a support part is a profile, in particular a plastic profile or a profile made of the heat-conducting material.

[0017] It may prove advantageous if the glass seal is made of a plastic material, particularly a soft plastic material. Thermoplastic elastomers based on PVC (polyvinyl chloride), especially soft PVC, PP / EPDM (polypropylene / ethylene-propylene-diene rubber), EPDM, PREN, TPS (styrene block copolymers), and SBS (styrene-butadiene-styrene block copolymer), as well as blends of the aforementioned plastic materials, are particularly preferred. Such materials possess sufficient long-term stability. As used herein, the term "soft plastic material" refers to plastic materials with a Shore hardness (Shore A) in the range of 50 Shore A to 80 Shore A, with thermoplastic polymer materials with a Shore hardness (Shore A) in the range of 60 Shore A to 80 Shore A, and particularly in the range of 65 Shore A to 75 Shore A, being preferred.A particularly preferred plastic material has a hardness of approximately 70 Shore A (in the range of 68 Shore A to 72 Shore A). The specified Shore hardness values ​​refer to the standards DIN 53505:2000-08 and DIN 7868-1:1982-10. Thermoplastic elastomers, preferably with a Shore hardness in these ranges, have proven particularly suitable.

[0018] The frame profiles for both the sash frame and the outer frame or casing are preferably a hollow chamber profile comprising several hollow chambers, in particular a plastic hollow chamber profile comprising several hollow chambers or an aluminum hollow chamber profile comprising several hollow chambers, with plastic hollow chamber profiles being particularly preferred in each case. Alternatively, wood profiles, aluminum-wood composite profiles, plastic-wood composite profiles, and aluminum-plastic composite profiles can also be used.

[0019] However, the window or door sash, frame, casing, and window or door according to the invention are particularly preferably constructed as corresponding plastic elements. The hollow chamber profiles used therein are then preferably made of polyvinyl chloride (PVC), in particular rigid PVC (PVC-U) or glass fiber-reinforced PVC, which may also contain post-chlorinated PVC (PVC-C). Such hollow chamber profiles can particularly preferably be produced in a conventional manner by extrusion or coextrusion.

[0020] The sash, frame, and casing profiles can be covered with facing panels. Preferred materials for such facing panels include, in particular, metallic materials such as steel, stainless steel, aluminum, or other alloys containing these, but also polymeric materials such as polyvinyl chloride (PVC), especially rigid PVC (PVC-U) or post-chlorinated PVC, polyamides, polyphenylsulfone (PPSU), polyvinylidene fluoride (PVDF), polyethersulfone (PES), polysulfone (PSU), polyphenylene sulfide (PPS), acrylonitrile-butadiene-styrene copolymer (ABS), polyoxymethylene (POM), polyester carbonate (PESC), and ASA (acrylonitrile-styrene-acrylate terpolymer), as well as copolymers and blends of these polymers. These polymer materials can also be fiber-reinforced, particularly glass fiber-reinforced, and composite materials made from these materials.

[0021] When using such facing panels, it is preferred to have a thermal insulation element arranged between the facing panel and the sash or frame profile. Such a thermal insulation element is preferably a profile made of a foamed plastic material, such as foamed PVC (polyvinyl chloride), especially soft PVC, PP / EPDM (polypropylene / ethylene propylene diene rubber), and foamed polyurethane.

[0022] By welding mitered pieces of such a hollow-chamber profile together, a window or door frame can be created. The resulting window or door frame is intended for installation in an opening in the wall of a building or can be installed in the opening in the wall of a building.

[0023] Such hollow chamber profiles preferably have a main hollow chamber or reinforcement chamber, into which, in preferred embodiments, a corresponding reinforcement element is inserted. It can also be helpful if the reinforcement element is made of a metallic material, in particular aluminum, steel, or iron, of a fiber-reinforced polymer material, in particular a glass-fiber-reinforced polymer material, or, in sections, of a combination of the aforementioned materials. Such materials have proven particularly suitable in practice.

[0024] The window or door sash according to the invention, the frame according to the invention, the window according to the invention and the door according to the invention as well as individual parts thereof can also be manufactured line by line or layer by layer using a line-building or layer-building manufacturing process (e.g. 3D printing), but production by extrusion or coextrusion is preferred.

[0025] In the following, the present invention will be explained in detail using the example of window sashes and a window comprising such a sash, with reference to the embodiments shown in the figures. In the figures: Fig. 1 a section of a cross-sectional view of a window sash according to an embodiment of the present invention; Fig. 2 a section of a cross-sectional view of a window sash according to a further embodiment of the present invention; Fig. 3 a section of a cross-sectional view of a window sash according to a further embodiment of the present invention; and Fig. 4 a section of a cross-sectional view of a window according to the invention, which Fig. 3 shown window sash according to the invention.

[0026] In Fig. 1 A section of a cross-sectional view of an embodiment of the sash 1 according to the invention is shown, using the example of a window sash with a sash frame 2 constructed from a plastic hollow profile frame, which is formed from mitered and welded sections of a window or door sash profile 3. The sash frame 2 of the sash 1 according to the invention is made of a thermoplastic polymer material, preferably polyvinyl chloride (PVC), in particular rigid PVC (PVC-U) or glass fiber reinforced PVC, to which additives such as stabilizers, plasticizers, pigments, and the like are additionally added. It is constructed from a plurality of hollow chambers, each of which is surrounded by webs of the sash frame 2. The profile of the sash frame 2 comprises a main hollow chamber 4 in the center, in which a reinforcing element (not shown), in particular a steel reinforcement, can be accommodated.The upper web 5 of the main hollow chamber 4, together with an outer overlap 6, forms a glazing rebate 7 with a rebate base 8. On the side opposite the outer overlap 6, the profile 3 of the sash frame 2 has a glazing bead groove 9 in which a glazing bead 10 is anchored. The outer overlap 6, the rebate base 8 and the glazing bead 10 form a rebate space 11 that is at least partially open on one side. An insulating glazing unit 12 is accommodated at the front end of the rebate space 11. In the embodiment shown in . Fig. 1 In the illustrated embodiment of the present invention, the insulating glazing 12 comprises two glass panes 13, 13', in the space between which a negative pressure exists. Thus, the insulating glazing 12 is a vacuum insulating glazing 12. The vacuum insulating glazing 12 has a glass edge 14 directed toward the rebate base 8.

[0027] In the illustrated embodiment, the glazing bead 10 comprises two glass seals 15, 15', namely an upper glass seal 15 located further away from the rebate base 8 and a lower glass seal 15' located closer to the rebate base 8. The two glass seals 15, 15' rest against the pane 13' of the vacuum insulating glazing 12 facing the glazing bead 10. In the illustrated embodiment of the present invention, the two glass seals 15, 15' are extruded onto the glazing bead 10.

[0028] How good Fig. 1 As can be seen, the glazing bead 10 is of a high design in the illustrated embodiment. Thus, the main body of the 10 and in particular the Fig. 1 In the illustrated installation position, the upper glass seal 15' extends beyond the outer overlap 6 of the casement profile 3. In the illustrated embodiment, the glazing bead 10 even projects beyond the overlap seal arranged on the outer overlap 6. As a result, the isotherms important for the formation of condensation in a temperature range of +10°C and +13°C do not run along the room-side surface of the glass pane 13' of the vacuum insulating glazing 12, but rather in the volume enclosed by the window sash 1 according to the invention. This significantly reduces the risk of condensation forming in this area.

[0029] In addition, the glass recess of the vacuum insulating glazing 12 is in the Fig. 1 illustrated embodiment is chosen to be as large as possible. In this embodiment, the glass edge 14 of the vacuum insulating glazing 12 partially rests on the rebate base 8. This also contributes to allowing the course of the isotherms important for the formation of condensation in a temperature range of + 10°C and + 13°C to run away from the room-side surface of the vacuum insulating glazing 12 through the vacuum insulating glazing 12 and the window sash profile 3 as well as through the volume occupied by the window sash 1 according to the invention. This also reduces the risk of condensation and thus the formation of mold. In alternative embodiments of the present invention, it may also be sufficient to choose the glass recess such that a slight distance, in particular a few millimeters, remains between the glass edge 14 and the rebate base 8.

[0030] Based on Fig. 2 bis Fig. 4 The present invention will be further explained with reference to further embodiments of the present invention using a window sash 1 according to the invention or a window 100 according to the invention. To avoid repetition, the following will therefore primarily refer to differences from the embodiment of the invention according to Fig. 1 The information relating to Fig. 1 The versions shown apply to the embodiments according to Fig. 2 bis Fig. 4 accordingly. Like reference symbols represent like elements.

[0031] In Fig. 2 a section of a cross-sectional view of a further embodiment of the window sash 1 according to the invention is shown, the sash frame 2 of which is in turn formed from cut and welded sections of a window sash profile 3 in the form of a plastic hollow chamber profile.

[0032] In the Fig. 2 In the embodiment of the window sash 1 according to the invention shown in FIG. 1, the glazing bead 10 is, in comparison to the embodiment shown in FIG. Fig. 1 The height of the glass seal 15' is no longer as high in the embodiment shown. However, in the installation situation shown, the upper glass seal 15' still protrudes above the upper edge of the outer overlap 6. Furthermore, the glass edge 14 of the vacuum insulating glazing 12 partially rests on the rebate base 8 of the sash profile 3. As explained, both measures contribute to reducing the risk of condensation and thus mold formation on the room-side surface of the glass pane 13' of the vacuum insulating glazing 12.

[0033] As a further measure to reduce the risk of condensation, the window sash 1 according to the invention is provided with Fig. 2 A heat conducting element 16 is arranged between the glazing bead 10 and the rebate base 8. In the Fig. 2 In the embodiment shown, the heat-conducting element 16 comprises a sheet 17 made of a metal with high thermal conductivity, in particular an aluminum sheet, and a support element 18, which in the embodiment shown is designed as a plastic profile made of polyvinyl chloride (PVC) and by means of which the heat-conducting element 16 stands on the rebate base 8. The aluminum sheet 17 lies against the room-side glass pane 13' of the vacuum insulating glazing 12. In addition, the aluminum sheet 17 extends approximately over the entire length between the glass pane 13' and the glazing bead 10. In addition, the aluminum sheet 17 is arranged in the rebate space 11 by the support element 18 such that the distance between the aluminum sheet 17 and the in the installation situation according to Fig. 2 lower side of the glazing bead 10 is approximately 0.5 mm. In alternative embodiments, the aluminum sheet 17 can also lie directly against the glazing bead 10.

[0034] Through the aluminum sheet 17 of the heat conducting element 16, heat energy from the interior of the room is transported directly to the surface of the glass pane 13' of the vacuum insulating glazing 12, which also contributes to reduced condensation on the surface of the vacuum insulating glazing 12.

[0035] A further embodiment of the window sash 1 according to the invention is shown in Fig. 3 shown as a section of a cross-sectional view. The sash frame 2 of the window sash according to the invention is also formed according to this embodiment from mitred and welded sections of a window sash profile 3 in the form of a plastic hollow chamber profile. Also according to this embodiment, the window sash frame 2 in the installation situation according to Fig. 3 upper glass seal 15' the upper edge of the outer overlap 6 and the glass edge 14 of the vacuum insulating glazing 12 partially rests on the rebate base 8 of the sash profile 3, which in turn contributes to a less likely formation of condensation on the room-side surface of the glass pane 13' of the vacuum insulating glazing 12.

[0036] Also the Fig. 3 The window sash 1 according to the invention shown in FIG. 1 again comprises a heat-conducting element 16 as a further measure to reduce the risk of condensation. According to this embodiment, the heat-conducting element 16 is made entirely of a metal with high thermal conductivity, in particular aluminum. For this purpose, the heat-conducting element 16 comprises an aluminum sheet 17 folded over at one end, wherein the aluminum sheet 17 rests with the folded end against the room-side glass pane 13' of the vacuum insulating glazing 12. From the room-side surface of the glass pane 13', the aluminum sheet 17 extends approximately over the entire distance between the glass pane 13' and the groove-side profile wall of the glazing bead 10. In addition, the Fig. 3 shown heat conducting element 16 has two support elements 18, 18', with which the heat conducting element 16 stands on the rebate base 8. In addition, the aluminum sheet 17 is arranged in the rebate space 11 by the support elements 18, 18' such that the distance between the aluminum sheet 17 and the in the installation situation according to Fig. 2 lower side of the glazing bead 10 is approximately 0.4 mm.

[0037] Through the heat conducting element 16, heat energy from the interior of the room reaches the surface of the room-side glass pane 13' of the vacuum insulating glazing 12 directly. The above-mentioned measures largely reduce the probability of condensation forming on the surface of the glass pane 13' and the associated formation of mold.

[0038] In Fig. 4 Finally, a section of a cross-sectional view of a window 100 according to the invention is shown, which has the Fig. 3illustrated window sash 1 according to the invention. In addition, the window 100 according to the invention comprises a frame 19, which in the illustrated embodiment is formed from mitered and welded sections of a frame profile 20 made of a plastic material, in particular PVC. In the window 100 according to the invention, the sash 1 according to the invention rests on the frame 19 via a frame seal 21 and a stop seal 22 on the sash frame 3 when the window 100 according to the invention is closed. The sash 1 according to the invention is rotatably mounted on the frame 19 via fittings (not shown).

[0039] The present invention has been described in detail by way of example with reference to the embodiments of a window sash and a window according to the present invention shown in the figures. It is understood that the present invention is not limited to the embodiment shown in the figures, but the scope of the present invention is derived from the appended claims.

Claims

1. Window or door leaf (1), comprising (a) a leaf frame (2), which is formed from portions of a window or door leaf profile (3) and which has a rebate base (8) and an outer overlap (6), (b) a glazing bead (10), which is anchored in a glazing bead groove (9) of the window or door leaf profile (3) and which, together with the rebate base (8) and the outer overlap (6), forms a rebate space (11) which is at least partially open on one side, wherein the glazing bead (10) comprises at least one glazing seal (15, 15'); and (c) an insulating glazing unit (12) which is received at the end face in the rebate space (11) and which comprises at least two glass panes (13, 13'), the intermediate space of which is subjected to a negative pressure and which has a glass edge (14) directed towards the rebate base (8); wherein the at least one glazing seal (15, 15') bears at least in portions against the glass pane (13') facing it, wherein a heat-conducting element (16) is arranged between the glazing bead (10) and the rebate base (8) and the heat-conducting element (16) bears at least in portions against the insulating glazing unit (12), wherein the heat-conducting element (16) comprises at least one supporting part (18, 18'), with which the heat-conducting element (16) bears against the rebate base (8), characterised in that the distance between the glass edge (14) and the rebate base (8) is at most 15 mm, preferably at most 10 mm, when viewed in cross-section of the window or door leaf (1), and the at least one supporting part (18, 18') of the heat-conducting element (16) is formed as a profile.

2. Window or door leaf (1) according to claim 1, characterised in that, viewed in cross-section of the window or door leaf (1), the distance between the glass edge (14) and the point of the at least one glazing seal (15') furthest away from the glass edge (14) is greater than the distance between the glass edge (14) and the point of the outer overlap (6) furthest away from the glass edge (14).

3. Window or door leaf (1) according to any one of claims 1 or 2, characterised in that the heat-conducting element (16) comprises a material which has a thermal conductivity of more than 15 W / mK, preferably a thermal conductivity of more than 150 W / mK.

4. Window or door leaf (1) according to any one of claims 1 to 3, characterised in that the distance between the heat-conducting element (16) and the side of the glazing bead (10) facing the rebate base (8) is at most 2 mm.

5. Window or door leaf (1) according to claim 4, characterised in that the heat-conducting element (46) abuts the glazing bead (10) at least in portions.

6. Window or door leaf (1) according to any one of claims 1 to 5, characterised in that, viewed in cross-section of the window or door leaf (1), the heat-conducting element (16) extends over at least 85% of the distance between the vacuum insulating glazing unit (12) and the glazing bead groove (9), preferably over at least 90% of the distance between the vacuum insulating glazing unit (10) and the glazing bead groove (9).

7. Window (100) or door, comprising a jamb set (4) or a frame and a window or door leaf (1) according to any one of claims 1 to 6 received therein in the closed state of the window (100) or the door.

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