EP4118285A1

EP4118285A1 - Window

Info

Publication number: EP4118285A1
Application number: EP21712076.5A
Authority: EP
Inventors: Harald Schulz
Original assignee: Schueco International KG
Current assignee: Schueco International KG
Priority date: 2020-03-13
Filing date: 2021-03-10
Publication date: 2023-01-18
Also published as: WO2021180785A1

Abstract

The invention relates to a window (1) with a trim frame (2) comprising an inner casement (20) and an outer casement (10) which are movably retained, wherein the inner casement (20) has an inner glass element (9, 9', 9''), which is retained on an inner casement frame (8), and the outer casement (10) has an outer glass element (4), which is retained on an outer casement frame (3), wherein the outer casement frame (3) comprises a plastic frame profile (32, 33, 35) on the inner side of the outer glass element (4). This allows improvement in the thermal insulation in the area of the window (1).

Description

window

The present invention relates to a window with a frame on which an inner sash and an outer sash are movably held, the inner sash having an inner glass element which is held on an inner sash frame, and the outer sash has an outer glass element, which is held on an outer sash.

EP 3029257 A1 discloses a window arrangement with an outer frame element part with an outer glazing and an inner frame part with an In nenverglasung, which are held independently of one another on a frame. In an intermediate space between the outer glazing and the inner glazing, a shading device is held such that it can be moved by means of a drive unit. In such a composite window, the external glazing serves to protect against rain or wind loads and enables a protected arrangement of the sun protection. In addition, the sound insulation is improved by the multi-layer structure. The outer glazing is designed as a single pane of glass and has only a low level of thermal insulation. In such composite windows, it is assumed that thermal insulation can only be carried out sensibly on the interior glazing, which is why the interior glazing is formed by an insulating glass pane.

It is therefore the object of the present invention to create a window which has improved thermal insulation.

This object is achieved with a window with the features of claim 1.

In the window according to the invention, an outer sash has an outer glass element and an inner sash has an inner glass element, both of which are movably held in a frame. The outer casement comprises a frame profile made of plastic on the inner side of the outer glass element, so that improved thermal insulation is achieved on the outer glass element compared with a metallic frame profile. The frame profile made of plastic preferably has a thermal conductivity of less than 0.5 W / mK, in particular less than 0.35 W / mK, so that a high level of thermal insulation is also ensured in the area of the outer sash frame.

The outer casement can be the outer glass element U-shaped einfas sen. The glass inset on the outer sash is preferably between 10mm to 35mm, particularly preferably between 10mm to 20mm, so that the edge area of the outer glass element is also surrounded by the sash with high thermal insulation.

The outer sash frame is preferably composed of frame profiles which are formed as composite profiles with an outer profile made of metal and the inner frame profile made of plastic. The frame profile made of plastic can be designed with one or more flea chambers and surround the edge of the outer glass element in an L-shape. On the outside, the outer sash frame can also have a wooden profile or a wider plastic profile instead of a metal profile. As an alternative, the outer sash frame can also be formed entirely from a plastic profile.

A glass retaining strip, preferably made of plastic, on which a seal is held, can also be mounted on the inside of the outer frame profile. Optionally, the outer glass element can be glued to the edge of the frame profile on the inside instead of being pressed against it. An overlap of the outer glass element transversely to the longitudinal direction of the frame profile is preferably at least 30 mm in order to ensure stable fixing of the frame profile.

The outer glass element preferably comprises a vacuum insulating glass element in which a negative pressure, in particular a vacuum, is applied between two glass panes. The distance between the two glass panes can be less than 1 mm, so that the outer glass element can be provided with a small thickness, for example less than 13 mm, preferably less than 11 mm. The negative pressure in the space between the two glass panes is preferably less than 0.3 mbar, for example less than 0.1 mbar, preferably less than 0.001 mbar, so that particularly good thermal insulation is provided in the area of the insulating glass pane. The distance between the inner and the outer glass element perpendicular to the plane of the plate-shaped glass elements is preferably at least 30 mm, in particular more than 40 mm. As a result, the gap can lead to an improvement in terms of both thermal insulation and soundproofing. Due to the wide design of the window frame and the sash frame, particularly high soundproofing values can also be achieved in the area of the window frame.

The heat transfer coefficient Uf of the frame made of the outer frame, the neren sash frame and the outer sash frame according to EN ISO 10077-2 is preferably less than 1.5W / m ² K, in particular less than 1.2W / m ² K, for example between 0.8 and 1.1W / m ² K.

The outer glass element preferably has an equal or lower heat transfer coefficient U _g according to DIN EN 673: 2011-04 or DIN EN 674: 2011-09 or DIN EN 675: 2011-09 than the inner glass element. As a result, the thermal insulation of the window can be significantly improved, since the space between the two glass elements can have a temperature close to the interior temperature in the cold season. Thanks to the high level of thermal insulation on the outer glass element and the outer sash frame, the thermal insulation of the entire window can be improved.

In a variant according to the invention, the outer glass element has a lower heat transfer coefficient U _g according to DIN EN 673: 2011-04 or DIN EN 674: 2011-09 or DIN EN 675: 2011-09 than the inner glass element. This measure is based on the knowledge that the thermal insulation of the window can be significantly improved if the outer glass element already has a high heat transfer coefficient, so that the space between the two glass elements has a higher temperature in the cold season than in previously known comparable windows. The combination of a high level of thermal insulation on the outer glass element and the outer sash frame allows the total energy transmission rate to be reduced on the window.

The heat transfer coefficient U _{g of} the outer glass element is preferably at least 20% lower than that of the inner glass element. As a result, an isotherm, for example the 10 ° isotherm, is moved as far to the outside as possible at the window when the outside temperature is low, which makes a further complex heat insulating glazing on the inner wing unnecessary, in particular triple glazing on the inner wing can be dispensed with. The terms “inner sash” and “outer sash” relate to the installation situation at a building opening, regardless of whether the sashes are opened and closed manually using fittings or a drive unit.

The heat transfer coefficient Uw of the outer glass element is preferably less than 1.1 W / m ² K, in particular between 0.3 to 0.7 W / m ² K. The difference in the heat transfer coefficient Uw between the outer glass element and the inner glass element can at least 0.4 W / m ² K, so that the inner glass element can be formed with lower thermal insulation.

The values for the heat transfer coefficient U _g each refer to the DIN EN 673: 2011-04 standard, provided this is applicable. If this is not applicable, the calculations are made according to DIN EN 674: 2011-09 or DIN EN 675: 2011-09 EN ISO 10077-1: 2017, depending on which standard is applicable.

The values for the heat transfer coefficient Uw each refer to the standard EN ISO 10077-1: 2017.

The heat transfer coefficient of a frame, i.e. the window profile, Uf is determined in accordance with EN ISO 10077-2: 2018-01. The length-related heat transfer coefficient Y ₉ is determined in accordance with EN ISO 10077-2: 2018-01. The heat transfer coefficient of the frame Uf according to EN ISO 10077-2 is preferably less than 1.5W / m ² K, in particular less 1.2W / m ² K, for example between 0.8 and 1.1W / m ² K.

The frame is preferably made as a composite profile. This United composite profile preferably has a middle metal profile between an outer metal profile and an in neren metal profile. In this case, at least one outer insulating web made of plastic is provided between the outer metal profile and the central metal profile, and at least one inner insulating web made of plastic is provided between the inner metal profile and the central metal profile. As a result, a spaced arrangement of two insulating planes is formed in the composite profile via the arrangement of at least one inner insulating web and at least one outer insulating web, which is a special one high thermal insulation is advantageous, the composite profile having a high stability due to the three metallic profiles. The at least one inner insulating bar can be seen in the area of the inner glass element and the at least one outer insulating bar can be seen in the area of the outer glass element, the planes being defined by the entire width of the glass elements.

In a preferred embodiment, a movable sun protection is provided in a space between the inner glass element and the outer glass element. The sun protection can be formed by slats, a Be hang, or other materials suitable for sun protection.

An intermediate space between the inner glass element and the outer glass element is preferably ventilated by a ventilation device. The ventilation device can be achieved passively through openings in the frame profiles of the inner and / or outer sash frame and / or frame profile, or alternatively by a motor-driven ventilation device, which is optionally also controllable.

The inner glass element is preferably formed by single glazing with a thickness between 2 mm to 15 mm, in particular 4 mm to 10 mm. This allows the window to be produced with a low dead weight. As an alternative, multi-pane insulating glass, in particular double-pane insulating glass, can optionally be used as an alternative for the inner glass element. The use of three-pane insulating glass is not necessary due to the high level of thermal insulation provided by the outer glass element. The inner multi-pane insulating glass can have a heat transfer coefficient U _g of less than 3 W / m ² K, in particular between 1.1 to 1.8 W / m ² K.

As a result of these measures, the total energy transmittance of the outer glass element is preferably less than 0.45, in particular less than 0.3. The total energy transmittance g is calculated according to DIN EN 410: 2011-04 and EN ISO 52022-3: 2017.

The invention is explained in more detail below using several exemplary embodiments with reference to the accompanying drawings. Show it: Figure 1 is a perspective view of a window according to the invention in an open position;

FIG. 2 shows a perspective view of the window of FIG. 1 with the sun protection lowered;

FIG. 3 shows a sectional view through the window according to FIG. 1 in a first embodiment;

FIG. 4 shows a sectional view through the window of FIG. 1 in a second embodiment, and

FIG. 5 shows a sectional view through the window of FIG. 1 in a third embodiment.

A window 1 comprises a frame 2 on which an inner sash 20 and an outer sash 10 are pivotably held, the inner sash 20 being movable independently of the outer sash 10 so that the user can also only open the inner sash 20. Fittings are not provided for this purpose, in order to keep the inner wing 20 and the outer wing 10 movable on the frame 2. Via suitable fittings, the outer wing 10 can alternatively be mounted on the inner wing 20 or vice versa, the inner wing 20 on the outer wing 10 so as to be movable.

The outer wing 10 comprises a circumferential wing frame 3 on which an outer plate-shaped glass element 4 is held. The inner wing 20 comprises an inner plate-shaped glass element 9 which is held on an inner wing frame 8. On the inner sash 8, a support bar 7 is also provided, on which a sunshade 6 is provided in the form of a Lamellenbe hang, which can be moved between a raised position and a lowered position, as can also be seen in FIG. Instead of the slat curtain, another sun protection 6 in the inter mediate space between the outer glass element 4 and the inner Glasele element 9 can be provided. On the inner wing 20, a handle element 5 is provided on the Flügelrah men 8, by means of which the inner wing 20 can be opened and closed. FIG. 3 shows a section through the window 1 in a closed position. The inner wing 20 surrounds the inner glass element 9, which is designed as a single glazing, optionally with a coating to reduce the thermal conductivity. The glass element 9 is held on a wing frame formed from profiles 8, which has an inner metal profile 80 and an outer metal profile 83, between which one or more insulating webs 82 made of plastic are arranged, on which insulating bodies are optionally also fixed. A glass retaining bead 86 is mounted on the outer metal profile 43, on which an insulating block 87 is held, by means of which the glass element 9 is fixed in a clamping manner against a sealing profile 81 on the inner metal profile 80. The glass inset of the inner glass element 9 is preferably less than 30 mm, optionally also less than 20 mm.

On the inner wing 20, a clamping profile 85 is also fixed to the outer metal profile 83, by means of which the sun protection 6 shown schematically is stretched over ropes or other guide means. Furthermore, a strip-shaped sealing profile 84 is provided on the outer metal profile 83, which is located on a contact surface on the outer sash 10 in the area of the sash 3.

The outer wing 10 comprises a glass element 4 which has a first glass pane 40 and a second glass pane 41 which are separated from one another by a gap 42. A negative pressure, in particular a vacuum, is applied in the gap 42, the glass panes 40 and 41 being held at a predetermined distance, for example a distance less than 1 mm, in particular less than 0.5 mm, via a plurality of spacers. Such a vacuum misolierglaselement is clamped on the sash 3 in the outer edge area between two sealing profiles 31 and 34.

The casement 3 comprises an outer metal profile 30, on which the up device profile 31 is held, and an inner frame profile 32 made of plastic, on which a glass retaining bead 33 made of plastic is provided. The plastic of the frame profile 32 preferably has a thermal conductivity of less than 0.5 W / m ² K. For a high level of thermal insulation, the frame profile 32 has at least one flea chamber. The glass inset of the glass element 4 on the outer sash 3 can also be less than 30 mm, preferably we niger than 20 mm. The frame 2 is formed from frame profiles which comprise an inner metal profile 50, a central metal profile 51 and an outer metal profile 52. Between tween the inner metal profile 50 and the middle metal profile 51, one or more insulating webs 53 made of plastic are provided, on which insulating bodies can optionally be fixed. The middle metal profile 51 is also connected to the outer metal profile 52 via an insulating web 54, on which an insulating body can also optionally be provided. In a direction perpendicular to the plane of the outer glass element 4, two spaced apart insulating bars 53 and 54 are thus provided, which ensure improved heat insulation.

Two elastic sealing elements 55 and 56 are fixed on the inside of the frame 2. The sealing element 55 has a sealing lip which cooperates with a contact surface on the inner sash 8, in particular on a projection of an insulating web 82. The sealing element 56 has a protruding elastic sealing lip which cooperates with a projection on the plastic profile 32 to to form a sealing plane within the blend frame. On the frame 2, a further sealing plane is also formed on the inside by a sealing profile 88 which is held on the inner sash 8 and cooperates with a contact surface on the inner metal profile 50. Furthermore, a white teres sealing profile can be drawn in on the outer metal profile 52, which cooperates with the outer sash 3 in the loading area of the metal profile 30. As a result, four spaced-apart sealing planes are formed by sealing elements on the frame in the illustrated embodiment, which guarantees a high degree of sealing and thermal insulation. The sealing elements 55 and 56 are designed as strip-shaped flea bodies with a multiplicity of flea chambers, so that heat conduction from the outside to the inside is reduced.

FIG. 4 shows a modified exemplary embodiment of a window in which a glass element 9 'is inserted on the inner sash 20, which is designed as a multi-pane insulating glass with two glass panes 90 and 91 which are held apart by a spacer 92. The glass panes 90 and 91 can, for example, be spaced between 4 mm and 16 mm apart. Such a multi-pane insulating glass has, for example, a heat transfer coefficient of less than 3 W / m ² K, in particular between 1.1 to 1.8 W / m ² K. The glass element 9 'is held on the casement 8, which is designed as in the first embodiment, except for the design of the insulating block 87, which has a smaller thickness. The frame 2 is also designed as in the first exemplary embodiment.

As in the previous embodiment, the outer wing 10 comprises, as the glass element 4, a vacuum insulating glass element with high thermal insulation, for example a heat transfer coefficient U _g between 0.3 to 1.1 W / m ² K, in particular 0.4 to 1.0 W / m ² K.

The outer glass element 4 is held in this embodiment via a wing frame which is glued to the inner glass pane 40 of the glass element 4. For this purpose, a frame profile 35 made of plastic with an adhesive layer 37 is fixed on the edge side of the glass element 4, an elastic sealing material 36 being provided between the frame profile 35 and the inner glass pane 40 for sealing on an inner side. The frame composed of frame profiles 35 can, as in the previous exemplary embodiment, be connected to the frame 2 or the inner sash frame 8 via fittings in order to keep the sash frame 3 movable. The frame profile 35 interacts with the sealing profile 84 on the inner sash frame 8 in order to seal a gap between the inner sash 20 and the outer sash 10.

In Figure 5, a further embodiment of a window is shown in which the outer sash 10 and the frame 2 are formed as in the first embodiment of Figure 3, for example. The inner wing 20 comprises a modified glass element 9 ″, which is designed as a vacuum insulating glass element and comprises a first glass pane 90 and a second glass pane 91, between which a gap 93 is provided with spacers, the gap 93 being covered with negative pressure, in particular with a Vacuum. The glass element 9 ″ is fixed to the inner casement 8 between the inner metal profile 80 and the glass retaining strip 86 via the insulating body 87 and the seal 81. The glass element 9 ″ has a higher thermal conductivity than the outer glass element 4, for example due to an additional coating on the outer glass element 4, which is missing from the inner glass element 9 ″.

The preceding exemplary embodiments can be combined with one another or modified. For example, the outer sash can with the glued frame profile 35 made of plastic can also be used in one of the exemplary embodiments of FIGS. 3 or 5.

In addition, the geometry of the individual profiles can be modified depending on the requirements, for example the composite profile of the Blendrah mens can also be made from fewer individual profiles.

In the exemplary embodiment shown, the frame includes a composite profile. But it is also possible to manufacture the frame profiles as plastic profiles in order to obtain a high level of thermal insulation.

List of reference symbols

1 window

2 frames

3 casement frames

4 outer glass element

5 handle element

6 sun protection

7 support strip

8 inner casement

9, 9 ', 9 "inner glass element 10 outer wing 20 inner wing

30 metal profile

31 sealing profile

32 frame profile

33 Glass retaining bead

34 Seal

35 frame profile

36 sealing material

37 adhesive layer

40 pane of glass

41 pane of glass

42 gap

43 outer metal profile

50 inner metal profile

51 middle metal profile

52 outer metal profile

53 insulating bar

54 insulating bar

55 sealing element

56 sealing element 80 inner metal profile 81 sealing profile 82 insulating bar

83 outer metal profile

84 sealing profile

85 tension profile

86 glazing bead Insulation block

Sealing profile

Pane of glass

Spacers

gap

Claims

Expectations

1. Window (1) with a frame (2) on which an inner sash (20) and an outer sash (10) are movably held, the inner sash (20) having an inner glass element (9, 9 ', 9 " ), which is held on an inner sash (8), and the outer wing (10) has an outer Gla selement (4) which is held on an outer sash (3), characterized in that the outer sash (3 ) comprises a frame profile made of plastic (32, 33, 35) on the inner side of the outer glass element (4).

2. Window according to claim 1, characterized in that the frame profile (32, 33, 35) made of plastic has a thermal conductivity of less than 0.5 W / mK, in particular less than 0.35 W / mK.

3. Window according to claim 1 or 2, characterized in that the outer sash frame (3) encloses the outer glass element (4) in a U-shape and the glass inset on the outer sash frame (3) is less than 30mm, in particular between 10mm to 20 mm , amounts to.

4. Window according to claim 3, characterized in that the outer sash frame (3) is composed of frame profiles which are formed as composite profiles with an outer profile made of metal and the inner frame profile made of plastic.

5. Window according to one of the preceding claims, characterized in that the outer glass element (4) is glued on the inside edge side with a frame profile (35).

6. Window according to claim 5, characterized in that the covering of the outer glass element (4) transversely to the longitudinal direction of the frame profile is at least 30 mm.

7. Window according to one of the preceding claims, characterized in that the outer glass element (4) comprises a vacuum insulating glass element, in which a negative pressure, in particular a vacuum, is applied between two glass panes.

8. Window according to one of the preceding claims, characterized in that a distance between the inner glass element (9, 9 ', 9 ") and the outer glass element (4) in a direction perpendicular to the plane of the plate-shaped glass elements (4, 9, 9 ', 9 ") is at least 30 mm, preferably more than 40 mm.

9. Window according to one of the preceding claims, characterized in that the heat transfer coefficient Uf of the frame made of the frame (2), the inner sash frame (8) and the outer sash frame (3) according to EN ISO 10077-2 is less than 1.5W / m ² K, in particular less than 1.2 W / m ² K, for example between 0.8 and 1.1 W / m ² K.

10. Window according to one of the preceding claims or according to the preamble of claim 1, characterized in that the heat transfer coefficient Ug according to DIN EN 673: 2011-04 or DIN EN 674: 2011-09 or DIN EN 675: 2011- 09 of the outer glass element (4) is at least 20% lower than that of the inner glass element (9).

11. Window according to one of the preceding claims, characterized in that the frame (2) is designed as a composite profile which has a central metal profile (51) between an outer metal profile (52) and an inner metal profile (50) and between the outer Me tallprofil (52) and the central metal profile (51) at least one outer insulating web (54) made of plastic and between the inner metal profile (50) and the central metal profile (51) at least one inner insulating web (53) made of plastic.

12. Window according to one of the preceding claims, characterized in that a movable sun protection (6) is provided in a space between the inner glass element (9, 9 ‘, 9 ″) and the outer glass element (4).

13. Window according to one of the preceding claims, characterized in that an intermediate space between the inner glass element (9, 9 ', 9 ″) and the outer glass element (4) is ventilated by a ventilation device.

14. Window according to one of the preceding claims, characterized in that the heat transfer coefficient U _g according to DIN EN 673: 2011-04 or DIN EN 674: 2011-09 or DIN EN 675: 2011-09 of the outer glass element (4) less than 1.1 W / m ² K, in particular between 0.3 and 0.7 W / m ² K.

15. Window according to one of the preceding claims, characterized in that the inner glass element (9) is formed by single glazing with a thickness between 2 mm to 15 mm, in particular 4 mm to 10 mm.

16. Window according to one of claims 1 to 13, characterized in that the inner glass element (9 ') is a multi- _{pane insulating glass with a heat transfer coefficient U g} of less than 3 W / m ² K, in particular between 1.1 and 1.8 W. / m ² K.

17. Window according to one of the preceding claims, characterized in that the total energy transmittance of the outer glass element (4) according to DIN EN 410: 2011-04 and EN ISO 52022-3: 2017 is less than 0.45, in particular less than 0.3 .

18. Window according to one of the preceding claims, characterized in that the difference in the heat transfer coefficient U _g according to DIN EN 673: 2011-04 or DIN EN 674: 2011-09 or DIN EN 675: 2011-09 between the outer glass element ( 4) and the inner glass element (9, 9 ', 9 “) is at least 0.4 W / m ² K.

19. Window according to one of the preceding claims, characterized in that the outer sash frame (3) surrounds the outer glass element (4) in a U-shape and the glass inset on the outer sash frame (3) is preferably less than 30 mm, in particular between 10 mm 20mm.