Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
  • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
  • E06B3/6617—Units comprising two or more parallel glass or like panes permanently secured together one of the panes being larger than another
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
  • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
  • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
  • E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
  • E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
  • E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
  • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
  • E06B3/6612—Evacuated glazing units

Definitions

• the present disclosure relates to a roof window.
• Building roof windows provides several advantages related to, e.g., inflow of sunlight to the interior of the building. Also it may provide ventilation advantages. It is however desired that the roof window provides good heat insulation in order to, e.g., reduce energy waste.
• Various roof window solutions have this been developed to obtain this. For example, it is known to provide insulation in the roof window frame in order to increase heat insulation performance. Also, an insulating glass unit comprising multiple gas insulated gaps may be used in order to increase heat insulation performance.
• patent document EP4242396 A1 discloses an exterior VIG unit and a smaller interior glass sheet.
• Patent document EP1835120 A1 discloses a roof window with an adjustable rabbet and a VIG unit.
• Patent document WO2020147909 A1 discloses a solution where a VIG unit comprises an overlapping part so that an evacuated gap overlaps an elongated, structural bottom member of a sash.
• the present disclosure may provide a solution which obtains advantages in relation to, e.g., reducing carbon footprint, providing an aesthetically appealing solution, providing improved heat insulation and/or providing a more mechanically simple and/or robust roof window.
• the present disclosure relates to a roof window for installation in a roof structure of a building.
• the roof window comprises a frame and a vacuum insulated glass unit supported by the frame.
• the frame comprises a top frame profile at the top of the roof window, a bottom frame profile at the bottom of the roof window, and side frame profiles extending between the top profile and the bottom profile.
• the vacuum insulated glass unit comprises a first glass sheet and a second glass sheet, wherein an insulating, evacuated gap is placed between the first glass sheet and the second glass sheet.
• a plurality of support structures are distributed in the evacuated gap so as to maintain a distance between a first major surface of the first glass sheet facing towards the evacuated gap and a first major surface of the second glass sheet facing towards the evacuated gap.
• An edge seal encloses the evacuated gap.
• the solution according to embodiments of the present disclosure may, e.g., provide a roof window solution, which may be space saving and or provide good heat insulation performance, e.g., when compared to material use.
• the vacuum insulated glass unit moreover comprises a further insulating gap arranged between a first major surface of a third glass sheet facing the further insulating gap and a major surface of a glass sheet of the vacuum insulated glass unit, which faces the further insulating gap.
• a further edge seal encloses the further insulating gap.
• the third glass sheet is configured to be the exterior glass sheet of the roof window and comprises an exterior major surface configured to face towards the exterior of the building when the roof wind is installed in the roof structure.
• the further insulating gap is configured to be arranged between the evacuated gap and the exterior glass sheet when the roof window is installed in the roof structure. This may, e.g., provide a roof window with improved insulation performance.
• the glass sheet adjacent to the exterior glass sheet comprises a projecting glass sheet portion, which projects beyond the edge of the exterior glass sheet.
• a solution according to embodiments of the present disclosure may, e.g., result in a solution with an advantageous geometry at one or more edges of the vacuum insulated glass unit at the roof window. Additionally or alternatively, it may providing one or more of mechanical advantages.
• a solution according to the present disclosure may enable providing an aesthetically desirable solution.
• a glass unit comprising two insulating gaps may enable providing a roof window with enhanced heat insulating properties.
• insulated gap and vacuum gap provides good rain noise reduction which may be advantageous in homes, office spaces and/or the like of buildings where human individuals stays.
• a VIG unit differs from a regular insulated glass unit (IGU) due to the atmospheric pressure of 10 tons/m2 affecting the VIG unit.
• a VIG hermetic edge seal i.e. the first edge seal, such as a rigid solder edge seal, does not have the flexible toughness of regular IGU seals.
• a VIG hermetic edge seal does not have the warm spacer insulation properties of a regular IGU edge seal. These among other factors require different design considerations to make a reliable roof window.
• the further edge seal may function similar to a warm/heat insulating spacer. This may, e.g., provide improved insulation at or near the VIG edge and reducing the thermal bridge. Additionally the projecting glass sheet portion enables a larger evacuated gap thereby increasing the good insulation provided by vacuum.
• the evacuated gap may partly or fully overlap the further edge seal which encloses the further insulating gap.
• the evacuated gap partly or fully overlaps the further edge seal, which encloses the further insulating gap at one or more of the top, bottom and/or sides of the roof window.
• Providing a solution where the evacuated gap partly or fully overlaps the edge seal, which encloses the further insulating gap may provide advantages in relation to reduce heat transfer at the glass unit edge(s).
• the frame comprises a movable frame and a fixation frame, wherein the movable frame is configured to move, such as pivot, relative to the fixation frame by means of one or more hinges, wherein the vacuum insulated glass unit is attached to the movable frame and is configured to move together with the movable frame.
• the roof window is a roof window of the centre hung type.
• This may, e.g., provide enhanced ventilation options since the movable frame can be opened from a closed position to an open position. It may moreover provide emergency escape possibilities.
• Roof windows of the centre hung type may, e.g., provide the advantage of enabling rotation of the movable frame so that the exterior surface of the glass unit at least partly faces the building interior during window wash and thereby is more easy to clean from the inside of the building.
• the exterior glass sheet comprises a projecting glass sheet portion that projects beyond the first and/or second glass sheet at the bottom of the roof window.
• a projecting glass sheet portion that projects beyond the first and/or second glass sheet at the bottom of the roof window may enable providing increased overlap at the bottom of the frame with the exterior glass sheet. This enables providing a larger, visible exterior glass sheet surface. It may additionally enable providing a reduced carbon foot print and/or water tightening advantages.
• the projecting glass sheet portion of the exterior glass sheet partly or fully overlaps a bottom profile of the fixation frame.
• At least one of the first and second glass sheets comprises a projecting glass sheet portion which projects beyond a side edge of the exterior glass sheet at one or both sides of the roof window.
• This may be advantageous in relation to, e.g., obtain a more space saving and/or environmentally friendly solution. It may additionally or alternatively be advantageous in relation to handing of water. It may additionally or alternatively be advantageous in relation to handing of cold bridge issues caused by properties of the edge seal enclosing the evacuated gap.
• At least one of the first and second glass sheets comprises a projecting glass sheet portion which projects beyond a top edge of the exterior glass sheet at the top of the roof window.
• This may be advantageous in relation to, e.g., obtain a more space saving and/or environmentally friendly solution. It may additionally or alternatively be advantageous in relation to handing of water. It may additionally or alternatively be advantageous in relation to handing of cold bridge issues caused by properties of the edge seal enclosing the evacuated gap.
• the further insulating gap is a gas filled gap, such as a gap containing argon gas.
• This may provide a solution that may provide various advantages, such as manufacturing advantages and/or space saving advantages. Additionally or alternatively it may reduce stress issues at the glass unit caused by, e.g., temperature differences between glass sheets of the glass unit.
• the vacuum insulated glass unit comprises a protection sealing, wherein the protection sealing covers the edge seal, such as a solder edge seal, such as a glass solder edge seal or metal solder edge seal, which encloses the evacuated gap.
• the protection sealing is a water tightening sealing such as a resilient sealing.
• the protection sealing may help to protect the edge seal, such as a solder edge seal, such as a glass solder edge seal or metal solder edge seal that enclosed the evacuated gap.
• the edge seal provides hermetic seal of the evacuated gap.
• the edge seal may be rigid and may not be sufficiently able to withstand the environmental conditions subjected at a roof window over the expected window lifetime. For example, water may cause increased wear of the edge seal. For example, phase transition of water, e.g., between solid state and liquid state, may cause increased wear.
• Providing a protection sealing, such as, e.g., an adhesive protection sealing and/or a water tight protection sealing, and providing further protection of this protection sealing by means of the overlapping first glass sheet, may help to provide more weather resistant and/or longer lasting solution.
• one or both of the first and second glass sheets overlaps the protection sealing, and/or the protection sealing extends in between surfaces of the first and second glass sheet. This may provide improve edge seal protection.
• a utility space is provided opposite to a surface of the further edge seal that faces away from the further insulating gap. Furthermore, said utility space is arranged opposite to, such as above, the projecting glass sheet portion, which projects beyond the edge of the exterior glass sheet.
• the utility space may be used for one or more purposes at the roof window. This may, e.g., help to provide a space and/or aesthetically pleasing saving solution.
• a gripping part for fixating the vacuum insulated glass unit to the frame is arranged at said utility space.
• This may, e.g., enable for advantages, such as a space saving, safe and/or aesthetically advantageous, glass unit fixation at the frame.
• a water drainage channel arranged between walls is arranged at said utility space.
• the water drainage channel may provide an improved water handing during drainage of water from the roof window to the building roof surface. It may also be provided in a space saving and/or aesthetically advantageous way.
• edge insulation material is arranged at said utility space.
• the edge seal enclosing the evacuated gap may cause a cold bridge.
• the edge insulation material such as an insulating encapsulation, may reduce or remove such issues.
• the vacuum insulated glass unit comprises a lamination layer.
• the lamination layer comprises a lamination interlayer and a lamination glass sheet.
• the lamination interlayer comprises or consist of one or more of the following:
• PVB, EVA or TPU may be used for the lamination interlayer.
• the lamination interlayer may overlap the movable frame and be attached thereto. This may help to carry glass sheet fractions if a glass sheet is broken.
• the further glass sheet may be a lamination glass sheet that may, e.g., provide mechanical protection.
• the lamination layer provides strength and stiffness to the vacuum insulated glass unit which may be exposed to the atmospheric pressure of 10 tons/m2 and undergoes lateral gravity pull since it is a roof window. Even more so when it snows. Further, the lamination layer can reduce the number of falling parts in case of glass unit breakage and/or extend the time (e.g. during fire) before the unit fails.
• the lamination layer comprises a lamination interlayer, wherein the lamination interlayer has a thickness above 0.5 mm, such as above 0.7 mm, such as above 1 mm or above 1.4 mm.
• the lamination interlayer has a thickness above 0.5 mm, such as above 0.7 mm, such as above 1 mm or above 1.4 mm.
• the inventors have found that a thicker lamination layer having a thickness above 0.5 mm, such as above 0.7 mm, such as above 1 mm or above 1.4 mm may provide a stronger unit.
• This lamination interlayer thickness may additionally or alternatively be advantageous if it is used for adhering to a thermally tempered glass sheet, due to, e.g., surface unevenness, such as so called roller waves, of the thermally tempered glass sheet
• the lamination interlayer with such a thickness may, e.g., also help to reduce rain noise which may be especially relevant in roof windows.
• VIG units have shown signs of being rather loud/ less noise damping within certain frequencies detectable by humans when subjected to rain, such as heavy rain.
• the lamination interlayer thickness may help to reduce such noise.
• the lamination interlayer has a thickness between 0.5 mm and 4 mm, such as between 0.6 mm and 3 mm, such as between 0.7 mm and 2 mm..
• one or more glass sheets arranged between the exterior glass sheet and the lamination layer comprises a projecting glass sheet portion, which projects beyond an edge of the lamination layer.
• the lamination layer such as the lamination interlayer and/or the lamination glass sheet, overlaps a frame profile of the frame at one or more of the side, top and/or bottom of the roof window.
• This may, e.g., help to provide reduced carbon footprint and/or provide more space for, e.g., sealing gaskets, it may provide deflection space due to thermal expansion, it may provide space for heat insulation at the area of the edge seal enclosing the evacuated gap, and/or the like.
• an extension is arranged in continuation of the bottom of the exterior glass sheet and extends with an extension distance. In some of these embodiments, the extension is arranged opposite to the bottom edge of the exterior glass sheet.
• the extension may allow for providing a shorter first projecting glass sheet portion thereby, e.g., reducing the risk of damage on the first projecting glass sheet portion doe to, e.g., exterior forces, while providing an aesthetically desirable solution.
• a heat insulation such as an edge heat insulation, is arranged to cover one or more exterior surfaces of the vacuum insulated glass unit around and/or proximate the edge seal, which encloses the evacuated gap.
• the edge seal enclosing the evacuated gap may cause a cold bridge.
• the heat insulation material at the edge such as an insulating encapsulation, may reduce or remove such issues.
• the heat insulation may be arranged to cover one or more surfaces of the vacuum insulated glass unit opposite to the edge seal which encloses the evacuated gap.
• said heat insulation such as an edge heat insulation
• said heat insulation may be arranged between the frame profile and the glass unit.
• the edge heat insulation may or may not be clamped between the vacuum insulated glass unit and an exterior surface of the frame profile.
• said heat insulation is arranged at said utility space. This may, e.g., provide a space saving solution and/or an improved heat insulation.
• the edge of the vacuum insulated glass unit is encapsulated by, such as overmoulded by, a heat insulation.
• This may provide good heat insulation and/or a solution that is advantageous to manufacture
• the edge heat insulation comprises a heat insulating material having a thermal conductivity below 0.1 W mK , such as below 0.05 W mK , such as below 0.02 W mK .
• the edge heat insulation comprises a heat insulating material having a thermal conductivity between 0.009 W mK and 0.1 W mK , such as between 0.01 W mK and 0.05 W mK , such as between 0.015 W mK and 0.04 W mK .
• the heat insulation overlaps an edge surface of one or more glass sheets, wherein said edge surface extends between major surfaces of the respective glass sheet.
• the heat insulation extends to overlap one or more major exterior glass sheet surfaces to a position opposite the evacuated gap, so that the evacuated gap overlaps the heat insulation. This may help to further reduce cold bridge issues.
• the heat insulation extends to a position between a frame profile of the movable frame and the vacuum insulated glass unit.
• the heat insulation is configured to reduce heat transfer at the area of the edge seal enclosing the evacuated gap when compared to a scenario where the heat insulation is omitted.
• the heat insulation extends from an edge seal, which encloses the further insulating gap, and to a frame profile of the frame. This may provide improved heat insulation.
• the heat insulation abuts the edge seal, which encloses the further insulating gap and/or the frame profile of the frame.
• the heat insulation abuts a further heat insulating member arranged at the frame profile of the frame.
• said vacuum insulated glass unit comprises said heat insulation and/or the heat insulation is attached to the vacuum insulated glass unit.
• the heat insulation adheres to and/or abuts one or more surfaces of the vacuum insulated glass unit. This may provide a solution that is easy to install at a frame and/or a solution, which is long lasting. It may additionally or alternatively enable providing a solution that is cost efficient.
• the heat insulation extends so as to overlap the edge seal, which encloses the evacuated gap, and the heat insulation overlaps the full width of the edge seal material, which encloses the evacuated gap. This may reduce cold bridge issues caused by the edge seal material.
• the heat insulation at the glass unit edge extends to overlap parts of oppositely directed major surfaces of glass sheets, such as different glass sheets, of the vacuum insulated glass unit.
• the heat insulation at the glass unit edge is made from the same material as the further edge seal, such as is unitary with the further edge seal. This may provide cost efficiency and/or more easy manufacturing.
• the heat insulation at the glass unit edge may be different from, and/or non-unitary with, the further edge seal.
• the vacuum insulated glass unit comprises an enamel layer, such as an enamel layer, which is substantially opaque to at least visible light.
• the enamel layer covers, such as is applied to, a surface of the exterior glass sheet. Said covered surface is part of the major surface of the exterior glass sheet configured to face towards the interior of the building when the roof window is installed in a building roof structure.
• one of the glass sheets of the vacuum insulated glass unit has a thickness that is larger than the thickness of one or more other glass sheets of the vacuum insulated glass unit.
• the exterior glass sheet is a tempered glass sheet, such as a thermally tempered glass sheet.
• the first and second glass sheets are tempered glass sheets, such as thermally tempered glass sheets.
• the mutual distance between glass sheet surfaces that are arranged at opposite sides of the further insulating gap is at least 20 times larger, such as at least 50 times larger, such as at least 80 times larger, than the mutual distance between the surfaces glass sheets that are arranged at opposite sides of the evacuated gap.
• one or more low-e coatings is/are arranged at a major surface of a glass sheet facing towards the exterior glass sheet. This may, e.g., provide a solution that may provide enhanced insulation features.
• a low-e coating is arranged at the major surface of the glass sheet that is adjacent to the exterior glass sheet, which major surface faces the exterior glass sheet.
• a low-e coating is arranged at the major surface of the second glass sheet, which faces the exterior glass sheet and the evacuated gap.
• the first glass sheet is arranged between the exterior glass sheet and the second glass sheet.
• the second glass sheet is arranged between the first glass sheet and a lamination layer.
• the exterior glass sheet comprises a projecting glass sheet portion at the bottom of the roof window, wherein said projecting glass sheet portion at the bottom of the roof window projects beyond the first and/or second glass sheet, wherein one or more step supports are configured to support the first projecting glass sheet portion.
• the projecting glass sheet portion may tend to be fragile to exterior forces, such as, e.g., hails.
• the support may help to support and take up forces, such as impact forces.
• the support may be configured to transfer impact forces to the frame. Hence, e.g., a more resistant solution may be obtained.
• This transfer of forces may be provided directly from the first projecting glass sheet portion and to the frame, through the step support.
• the support may act as a reinforcement/protection of the first projecting glass sheet portion.
• the one or more step supports may be attached to the frame, such as by means of a connection member, such as a bracket.
• one or more of the one or more step supports is/are attached to a bottom profile of the movable frame.
• the movable frame may provide the supporting of the first projecting glass sheet portion, and forces, such as impact forces from for example hails or other objects, acting on the first projecting glass sheet portion may be transferred to the frame, such as the bottom profile of the movable frame, directly and not through other parts of the glass unit.
• one or more of the one or more step supports comprises a body part which extends to, and/or is placed opposite to, a position opposite a surface of a bottom profile of the fixation frame. This surface faces said projecting glass sheet portion at the bottom of the roof window. This may, e.g., provide a more safe solution.
• one or more of the one or more step supports is placed between the projecting glass sheet portion at the bottom of the roof window and a surface of one or more bottom profiles facing said projecting glass sheet portion at the bottom of the roof window.
• the one or more step supports support the projecting glass sheet portion at the bottom of the roof window at one or more locations. These locations are arranged with a distance of at least 10%, such as at least 40%, such as at least 60% of the projecting distance of the projecting glass sheet portion at the bottom of the roof window, from the bottom edge of the first and/or second glass sheet in a direction that is parallel to the exterior major surface of the exterior glass sheet.
• one or more of the one or more step supports may be configured to support the first projecting glass sheet portion at least when the movable frame is in a closed position.
• one or more of the one or more step supports is attached to said projecting glass sheet portion at the bottom of the roof window, such as by means of one or more an adhesives.
• Said adhesive may comprises an adhesive tape and/or a glue. This may, e.g., provide a safe solution as the support may hence both support the glass sheet so as to reduce the risk of breakage of the first projecting glass sheet portion, and moreover may retain the broken parts of the first projecting glass sheet portion in case it breaks.
• Using an adhesive may provide a safe solution.
• Providing a combination of using a tape and a glue may provide advantageous manufacturing options as a glue having a longer curing time may be used as the tape provides initial sufficient attachment.
• an extension is arranged in continuation of the bottom of the exterior glass sheet and extends with an extension distance.
• the extension comprises an exterior surface, such as a surface of an extension body, which is configured to be visible from the exterior of the building.
• said exterior surface is substantially flush with the exterior major surface of the exterior glass sheet, which is configured to face away from the interior of the building.
• the exterior surface of the extension varies with on more than ⁇ 5 mm, such as no more than ⁇ 3 mm, such as no more than ⁇ 1 mm from the plane comprising the exterior surface of the exterior glass sheet over at distance of at least 1 cm, such as at least 3 cm or at least 5 cm from the exterior glass sheet bottom edge. This may provide a resistant and aesthetically appealing solution that is less prone to breakage of the first projecting glass sheet portion.
• the extension may comprise one or more of a glass sheet, a metal sheet and/or a polymer sheet.
• the extension comprises an extension body, which is supported by, such as carried by, an extension body support.
• the extension body is attached to the extension body support, and the extension body comprises an exterior, visible surface configured to face the exterior of the building. This may, e.g., provide an aesthetically appealing and strong solution. It may additionally provide a solution where the extension, such as the extension body, may be exchanged.
• the extension may comprise an extension member provided by a plate/sheet, such as a polymer sheet/plate and/or a metal sheet/plate, e.g., comprising one or more of aluminium, iron or steel.
• the extension member may here be arranged in continuation of the external glass sheet bottom edge and provides the visible extension surface facing away from the building interior and which is subjected to weather such as rain and sunlight. This surface may or may not be applied with a coating, such as a paint or an enamel.
• an extension body such as a replaceable body, may be omitted.
• the extension comprises an elongated, structural profile, such as a metal profile, providing the structural integrity of the extension.
• the elongated, structural profile of the extension comprises a metal sheet having a thickness between 0.5 mm and 2 mm, such as between 0.5 mm and 1.3 mm, such as between 0.7 mm and 1.0 mm.
• the extension body comprises one or more functional parts.
• the one or more functional parts may, e.g., provide advantages in relation to, e.g., obtaining recharging a battery of an actuator or the like of the roof window, providing sensor information, such as weather information, such as, e.g., temperature information rain information, air humidity information, air pressure information and/or the like.
• the extension body comprises one or more electric circuitries and/or electric components
• the extension body is supported by, such as carried by, a member providing a cladding of the roof window.
• a member providing a cladding of the roof window This may, e.g., provide a mechanically simple and/or space saving solution while obtaining enhanced water tightness at the roof window bottom.
• the cladding member may comprise a covering part ensuring increased water tightness at the roof window bottom.
• an exterior surface of the extension may be substantially identical and/or substantially visually identical to the exterior surface of the exterior surface of the first projecting glass sheet portion. This may, e.g., enable providing an aesthetically pleasing solution.
• the extension body may comprise a glass sheet and/or an exterior glass sheet surface. This may, e.g., enable providing an aesthetically pleasing solution.
• the extension is supported by the movable frame, such as carried by the movable frame.
• the extension is attached to a profile of the movable frame by means of one or more mechanical fasteners, such as by means of attaching an attachment part, such as a bracket, to the profile. This may provide a stronger and/or more safe solution where the risk of breakage or damage of the first projecting glass sheet portion is reduced.
• the extension may be attached to the profile of the movable frame at a surface of the profile that faces a profile of the fixation frame when the movable frame is in a closed position.
• the first major surface of the first glass sheet and the first major surface of the second glass sheet may cover the full width of the first edge seal. This may or may not be the case for the entire vacuum insulated glass unit. This may, e.g., provide a cost efficient and/or a more robust solution.
• the extension is supported by, such as mainly carried by, the vacuum insulated glass unit. In other embodiments, the extension may be unsupported by the vacuum insulated glass unit.
• the roof window is of the centre hung type.
• the roof window is of the top hung type.
• the roof window is of the non-centre hung type.
• the roof window is of the type configured to be installed in a roof structure having a roof pitch above 17°, such as above 30° relative to horizontal.
• the further edge seal overlaps, such as abuts, the protection sealing.
• a lamination glass of a lamination layer of the vacuum insulating glass unit overlaps the protection sealing.
• it relates to a building comprising one or more roof windows as described above installed in a roof structure of the building.
• Fig. 1 illustrates schematically a cross section of a roof window 1 for installation in a roof structure of a building (not illustrated in fig 1 ).
• the roof window 1 comprises a frame 2 and a vacuum insulated glass unit 3.
• the frame 2 comprises a movable frame 2a (also called movable unit in the present document) and a fixation frame 2a.
• the movable frame 2a is configured to move, such as pivot, relative to the fixation frame 2b by means of one or more hinges (not illustrated in fig. 1 ) between an open position and a closed position.
• the window 1 can open and close.
• the vacuum insulated glass unit 3 (may also be referred to as glass unit 3 in the below) is attached to the movable frame 2a and is configured to move together with the movable frame 2a.
• the movable frame 2a comprises a first frame opening FO1 that is enclosed by structural frame profiles 2a_to, 2a_bo, at the top TO and bottom BO of the roof window respectively.
• the movable frame 2a moreover comprises two structural side frame profiles 2a_si (one is visible in fig. 1 ) extending between the top profile 2a_to and bottom profile 2a-bo.
• the frame profiles of the movable frame 2a together encloses the first frame opening FO1, which may be a rectangular frame opening, through which sunlight can pass from the vacuum insulated glass unit 3.
• the roof window 1 in fig. 1 is a roof window of the centre hung type.
• the movable frame 2a is enclosed by a fixation frame 2b which provides a second frame opening FO2.
• a bottom profile surface 2a_S1 (See also figs 2A-2B ) of the movable frame 2a faces the first frame opening FO1 whereas an oppositely directed surface 2a_S2 (See also figs 2A-2B ) of that bottom profile 2a_bo faces the fixation frame 2b.
• the fixation frame 2b encloses the second frame opening FO2.
• the second frame opening FO is arranged between structural top 2b_to and bottom 2b_bo profiles, as well as between structural side profiles 2b_si (one is visible in fig.
• the fixation frame 2b is configured to be fixed to, such as build into, a building roof structure.
• the roof window 1 comprises water tightening covers comprising a top cover 24 and a cladding member 13.
• the roof window 1 may also comprise side water covers 21a, 21b (not illustrated in fig. 1 ). These covers are described in more details further below.
• the frame profiles 2a_bo, 2a_to, 2a_si of the movable frame 2a and/or the frame profiles 2b_bo, 2b_to, 2b_si of the fixation frame 2b may be substantially solid, e.g., made partly or fully from a wood material or a combination of materials.
• one, more than one, or all, of the frame profiles 2a_bo, 2a_to, 2a_si, 2b_bo, 2b_to, 2b_si may comprise an outer shell provided by exterior profile walls providing the outer profile boundary.
• the exterior walls may be structural.
• the exterior walls may in some embodiments comprise or consist of a polymer wall such as comprising a Polyvinyl Chloride (PVC) walls such as Chlorinated Polyvinyl Chloride (CPVC).
• PVC Polyvinyl Chloride
• CPVC Chlorinated Polyvinyl Chloride
• the polymer wall material of the exterior walls may be reinforced by means of reinforcements, such as fibres, such as glass fibres or carbon fibres, intermixed with the polymer wall material.
• the polymer wall material may comprise between 15% and 35% fibre reinforcement by WT profile wall material, such as between 20% and 30% fibre reinforcement by weight profile wall material.
• the exterior profile walls may not comprise fibre reinforcement.
• the fibre reinforcement content by WT profile wall material may be less than 3%, such as less than 1% or less than 0.5% by weight.
• the exterior walls of the frame profiles may enclose a frame profile interior comprising one or more interior chambers. This/these chambers may provide heat insulation.
• one or more of the one or more interior chambers may be filled with an insulation material such as comprising an expanded foam, mineral wool, glass wool, natural fibre based insulation and/or the like.
• one or more reinforcements such as metal reinforcements, such as aluminium, iron or steel reinforcements, may be arranged in or at the frame profiles 2a_bo, 2a_to, 2a_si, 2b_bo, 2b_to, 2b_si to increase the structural strength.
• the frame profiles 2a_bo, 2a_to, 2a_si, 2b_bo, 2b_to, 2b_si are elongated, and in fig. 1 , a schematic cross section of profiles 2a_bo, 2a_to, 2b_bo, 2b_to is illustrated where the cross section plane is substantially perpendicular to the longitudinal direction of these profiles 2a_bo, 2a_to, 2b_bo, 2b_to.
• the cross section plane is substantially parallel with the longitudinal direction of the side profiles.
• the movable frame may or may not comprise a handle 27 for manually operating the movable frame between a closed and open position/state.
• the handle may be directly or indirectly connected to a locking mechanism (not illustrated) that enables locking the movable frame 2a relative to the fixation frame 2b in at least the closed position of the movable unit.
• the vacuum insulated glass unit 3 comprises a first glass sheet 3a comprising a first major surface 3a1, and a second glass sheet 3b comprising a second major surface 3b1. These major glass sheet surfaces 3a1, 3b1 faces each other and an evacuated gap 4 paced between the major surfaces 3a1, 3b1.
• the glass sheet surfaces 3a1, 3b1 are substantially parallel.
• the glass sheets also comprises oppositely directed, major surface 3a2. 3b2 facing away from the evacuated gap 4.
• a plurality of support structures 5 are arranged between the glass sheet surfaces 3a1, 3b1 with a mutual distance to the neighbouring support structures. These support structures 5 are distributed inside the evacuated gap 4 according to a predetermined pattern, e.g., in rows and columns. The support structures 5 maintains the gap 4 between the major glass sheet surfaces 3a1, 3b1 of the vacuum insulated glass (VIG) unit when the gap 4 has been evacuated and sealed.
• VIP vacuum insulated glass
• the glass sheets 3a, 3b are sealed together at the periphery of the glass sheets 3a, 3b with the plurality of support structures 5 arranged between the major surfaces 3a1, 3b1 in the evacuated gap 4.
• the sealing together of the first and second glass sheets 3a, 3b may comprise use of an edge seal 9 material such as a solder glass edge seal material or a solder metal edge seal material.
• the edge seal 9 material may comprise solder material such as a glass solder material, for example a glass solder frit material, such as a low melting point glass solder frit material.
• the vacuum insulated glass unit 3 may in some embodiments comprise more than 300 support structures 5, such as more than 1000 or more than 2000 support structures 5 arranged in the evacuated gap 4.
• the vacuum insulated glass unit 3 may in some embodiments comprise between 500 and 10000 support structures 5, such as between 1000 and 600 support structures in the evacuated gap 4.
• the low melting point glass solder frit material may have a rated melting temperature Tm below 500 °C, such as below 450 °C, such as below 410 °C. In some embodiments of the present disclosure, the low melting point glass solder frit material may have a rated melting temperature Tm above 300 °C, such as above 340 °C.
• the sealing together of the glass sheet 3a, 3b at the edges by the edge seal 9 may provide a fused, rigid edge seal.
• the edge seal encloses the evacuated gap around the periphery of the evacuated gap 4.
• One or both glass sheets 3a, 3b may have a thickness between 1 mm and 6 mm, such as between 2 mm and 4 mm, for example between 2.5 mm and 3.5 mm including both end points.
• the glass sheets 3a, 3b may be of the same or different thickness.
• one or both glass sheets 3a, 3b has a thickness of between 2.5 mm and 5 mm, such as between 3 mm and 4.5 mm, such as 3 mm or 4 mm.
• the glass sheets 3a 3b may be annealed glass sheets or tempered glass sheets, such as thermally tempered glass sheets.
• Thermally tempered glass sheets 3a, 3b may, e.g., allow providing a VIG unit with larger mutual distance between adjacent support structures 5 and/or may allow use of thinner glass sheets 3a, 3b than if using annealed glass sheets.
• the distance between neighbouring support structures 5 in the gap 4 may in embodiments of the present disclosure be between 20 mm and 70 mm, such as between 25 mm and 65 mm, such as between 35 mm and 45 mm.
• the major surfaces 3a1, 3a2, 3b1, 3b2 of these may be uneven due to, e.g., a plurality of so-called roller waves, bending and/or due to global edge kink. These characteristics may originate from the manufacturing process of the thermally tempered glass sheets.
• the evacuated gap 4 has been evacuated to a reduced pressure (e.g. provided at an evacuation and sealing station.
• the pressure in the evacuated gap 4 may be below 0.05 mbar, such as below 0.005 mbar, such as 0.003 or 0.001 mbar or below. This may be obtained by means of an evacuation pump before sealing the gap 4.
• a pump may have been connected directly or indirectly to an evacuation hole of the VIG unit assembly, and after the evacuation, the evacuation hole is sealed by a gap sealing, such as at least partly by means of a solder material and/or another sealing solution, such as a permanent sealing solution.
• the evacuation hole sealing solution may comprise a solder material and/or a glass pipe to be sealed by heating when the gap 4 has been finally evacuated to provide a VIG unit.
• the evacuation of the gap 4 may be provided by means of a suction cup (not illustrated) arranged to cover an evacuation hole. In other embodiments, the evacuation may be provided inside an evacuation chamber.
• the support structures 2 maintains a distance between the glass sheet surfaces 3a1, 3b1 across the evacuated gap when the gap 4 has been evacuated and sealed to provide the final VIG unit.
• the distance between the major glass sheet surfaces 3a1, 3b1 facing the gap may in embodiments of the present disclosure be 0.5 mm or below, such as 0.3 mm or below, for example 0.2 mm or below.
• the distance between the major glass sheet surfaces 3a1, 3b1 facing the evacuated gap 4 may in embodiments of the present disclosure be between 0.05 mm and 0.6 mm, such as between 0.1 mm and 0.4 mm, such as between 0.15 and 0.25 mm. It is understood that the support structures 5 may have a height substantially matching such a gap height / distance between the glass sheet surfaces 3a1, 3b1.
• Both major surfaces 3a1, 3b1 of the first and second glass sheet 3a, 3b which face the evacuated gap 4 may, in embodiments of the present disclosure, extend so as to cover the full, maximum width of the edge seal 9. This may be the case for the full extent of the edge seal 9 around the evacuated gap 4.
• the edge seal 9 may be arranged so as to substantially not extend beyond the glass sheet edges of the first 3a and second 3b glass sheets arranged proximate the edge seal 9. This may in some embodiments be the case for the entire edge seal of the glass unit 3.
• one or both glass sheets 3a, 3b may extend beyond the side 9a of the edge seal 9 facing away from the evacuated gap.
• the side 9a of the edge seal 9 facing away from the evacuated gap may be arranged between the major surfaces 3a1, 3b1 of the glass sheets 3a, 3b.
• the final VIG unit 3 may, e.g., be transparent to at least visible light, i.e. light in the spectrum that is visible to the human eye.
• the vacuum insulated glass unit 3 moreover comprises a third glass sheet 3d.
• a further insulating gap 7 is placed between a first major surface 3d1 of the third glass sheet 3d facing the further insulating gap 7 and a major surface 3a2 of the glass sheet 3a of the vacuum insulated glass unit 3 that faces the further insulating gap 7.
• this major surface 3a2 is the major surface if the first glass sheet 3a that faces away from the evacuated gap 4.
• the further insulating gap 7 is placed closer to the building exterior EXT than the evacuated gap.
• the evacuated gap 4 is the innermost gap placed nearest to the interior INT of the building.
• the first glass sheet 3a is placed between the evacuated gap 4 and the further insulating gap 7.
• Major oppositely directed surfaces of the first glass sheet 3a may thus face and, e.g., abut (including low-e coating if present) the further insulating gap 7 and the evacuated gap 4, respectively.
• An edge seal 7a encloses the further insulating gap 7.
• the further edge seal 7a may be of the warm spacer type.
• the further edge seal 7a may or may not comprise a primary seal and a secondary seal (not illustrated).
• the primary seal may be placed more proximate the gap 7 than the secondary seal.
• the edge seal 7a enclosing the further insulating gap 7 may comprise one or more of (not illustrated):
• the edge seal 7a may in embodiments of the present disclosure comprise one or more materials and/or a design providing a thermal conductivity of the edge seal 7a below 0.6 W mK , such as below 0.4 W mK .
• the edge seal 7a may in embodiments of the present disclosure comprise one or more materials and/or a design providing a thermal conductivity of the edge seal 7a below 0.1 W mK , such as below 0.05 W mK , such as below 0.02 W mK .
• the edge seal 7a may in embodiments of the present disclosure comprise one or more materials and/or a design providing a thermal conductivity of the edge seal 7a between 0,009 W mK and 0.6 W mK , such as between 0.05 W mK and 0.4 W mK .
• the evacuated gap 4 is placed between a lamination layer 6, 3c and the further insulating gap 4.
• the further insulating gap 7 may be a gas filled gap 7, such as a gap 7 comprising argon gas.
• Other gas types may alternatively be used in the gap 7.
• the mutual distance between the surfaces 3d1, 3a2 of the glass sheets 3d, 3a that is arranged at opposite sides of, and faces, the further insulating gap 7 may be larger than the distance between the glass sheet 3a, 3b surfaces 3a1, 3b1 that is arranged at opposite sides of the evacuated gap 4. Said distance may be determined in a direction perpendicular to said surfaces.
• the mutual distance between the surfaces 3d1, 3a2 that is arranged at opposite sides of the further insulating gap 7 may be at least 10 times larger, such as at least 20 times larger or at least 40 times larger than the mutual distance between the glass sheets 3a, 3b that is arranged at opposite sides of the evacuated gap 4.
• the mutual distance between the surfaces 3d1, 3a2 that is arranged at opposite sides of the further insulating gap 7 may be between 10 and 120 times, such as between at least 20 times and 90 times, such as between 40 times and larger 70 times larger, than the mutual distance between the glass sheet 3a, 3b surfaces 3a1, 3b1 that is arranged at opposite sides of the evacuated gap 4.
• the mutual distance between the surfaces 3d1, 3a2 that is arranged at opposite sides of the further insulating gap 7 may be between 10 mm and 22 mm, such as between 11 mm - 15 mm, such as between 12 and 14 mm.
• the second glass sheet 3b is arranged between the first glass sheet 3a and a lamination layer 6, 3c, such as comprising an interlayer 6, of the lamination layer 6, 3c.
• the lamination interlayer 6 attaches to the major surface 3b2 of the second glass sheet 3b and a major surface of a lamination glass sheet 3c, respectively.
• the vacuum insulated glass unit 3 comprises the lamination layer 3c, 6.
• the lamination layer 6, 3 in fig. 1 comprises a lamination interlayer 6.
• the lamination interlayer 6 may in embodiments comprise or consist of one or more of the following: ethylene vinyl acetate (EVA),
• PVB, EVA or TPU may be preferred for the lamination interlayer.
• the lamination interlayer 6 may have a thickness (extending between the adjacent glass sheet surfaces) above 0.5 mm, such as above 0.7 mm, such as above 1 mm or above 1.4 mm. In some embodiments, the lamination interlayer 6 has a thickness between 0.5 mm and 4 mm, such as between 0.6 mm and 3 mm, such as between 0.7 mm and 2 mm or between 1 mm and 3 mm.
• the lamination layer also, in fig. 1 , comprises a further glass sheet 3c attached to said lamination interlayer 6.
• the further glass sheet 3c may be tempered, such as thermally tempered, or annealed.
• the further glass sheet 3c also called a lamination glass sheet 3c in this document, may have the same thickness, a lower thickness or a larger thickness, than the glass sheet thickness of the first and second glass sheets 3a, 3b.
• the lamination layer 3c, 6 provides safety and may, e.g., carry broken parts of the glass unit 3 in case of breakage thereof, thereby reducing the number of falling parts.
• the roof window 1 is configured to be installed in a building roof structure so that the first glass sheet 3a of the vacuum insulated glass unit 3 is configured to be placed closer to the exterior EXT of the building than the second glass sheet 3b.
• the vacuum insulated glass unit 3 comprises an exterior glass sheet EGS.
• the exterior glass sheet is the first glass sheet 3d.
• the exterior glass sheet is configured to be the outermost glass sheet arranged proximate the building exterior EXT and which may act as a weather shield when the movable frame 2a is in a closed position as, e.g., illustrated in fig. 1 .
• the exterior glass sheet EGS comprises the outer major surface 3su1 of the glass unit 3 that faces towards the building exterior EXT and may abut the building exterior.
• the exterior glass sheet EGS, 3d comprises a projecting glass sheet portion 3p1, also referred to as first projecting glass sheet portion 3p1 below. In other embodiments, this projecting portion 3p1 may be omitted.
• This first projecting glass sheet portion 3p1 projects beyond a bottom edge 3b_be of the second glass sheet 3b and also beyond the bottom edge 3a_be of the first glass sheet 3a, with a first projecting distance DIS1.
• the bottom edge of the glass sheets 3b, 3a is configured to be the bottom edge of the glass sheet 3b, 3a that is arranged at the roof window bottom BO when the roof window is installed in the roof structure.
• the further insulating gap 7 of the glass unit 3 is arranged between the major surface 3d1 of the exterior glass sheet 3d, EGS and the major surface 3a1 of the first glass sheet 3a.
• the first glass sheet 3a is adjacent to the exterior glass sheet EGS, 3d.
• the first projecting glass sheet portion 3p1 of the exterior glass sheet 3d, EGS projects with the first projecting distance DIS1 beyond the bottom edges 3b_be, 3a_be of the glass sheets 3b, 3a of the vacuum insulated glass unit 3, and the first glass sheet 3a is adjacent to the exterior glass sheet 3d, EGS of the vacuum insulated glass unit 3.
• the roof window 1 is configured to be installed so that the window top TO is arranged at a higher vertical level than the window bottom BO.
• the top part of the movable frame 2a is configured to move into the building, see dashed arrow AR1 whereas the bottom part of the movable frame 2a is configured to move towards the exterior of the building, see dashed arrow AR2.
• the rotation point for the movable frame 2a may be arranged between the top and bottom profiles 2a_bo, 2a_to, for example around the centre portion of the side profiles 2a_si.
• Roof windows of the centre hung type may, e.g., allow rotation of the movable frame so that the exterior surface 3su1 of the glass unit may at least partly face the building interior INT during window cleaning/wash of the surface 3su1.
• the roof window 1 may be of the type configured to be installed in a roof structure having a roof pitch above 17°, such as above 30° relative to horizontal.
• the first projecting glass sheet portion 3p1 may in embodiments of the present disclosure overlap one or more structural bottom profiles 2a_bo, 2b_bo of the frame 2, 2a, 2b. This is provided so that the exterior glass sheet overlap the bottom profile 2a_bo of the movable frame and the bottom profile 2b_bo of the fixation frame.
• the second glass sheet 3b and a part of the evacuated gap 4 also overlaps a part of the bottom frame 3a_bo profile. This may help to move the edge seal 9 further away from the first frame opening FO1, which may be advantageous as the edge seal 9 material may act as a cold bridge.
• the evacuated gap 4 may overlap the full width W1 bottom frame profile 3a_bo of the movable frame 3a. In fig. 1 , the gap 4 overlaps a part, but not the whole, width W1 of the bottom frame profile 3a_bo of the movable frame 3a.
• the further insulating gap 7 overlaps a part of the bottom frame profile 3a_bo of the movable frame 3a. In other embodiments, the further insulating gap 7 may fully overlap the bottom frame profile 3a_bo of the movable frame 3a.
• the first projecting distance DIS1 may in embodiments of the present disclosure be at least 6 mm such as 10 mm, such as at least 25 mm, such as at least 40 mm.
• the evacuated gap 4 and/or further gap 7 may overlap at least 30%, such as at least 60% or at least 90% of the profile 2a_bo width W1.
• the first projecting distance DIS1 may in embodiments of the present disclosure be at least 40 mm, such as at least 50 mm, such as at least 80 mm, such as at least 100 mm.
• the first projecting distance DIS1 may be no more than 30 mm, such as no more than 25 mm. In some embodiments of the present disclosure, the first projecting distance DIS1 may be no more than 100 mm, such as no more than 80 mm, such as no more than 60 mm.
• the first projecting distance DIS1 may be between 10 mm and 120 mm, such as between 25 mm and 80 mm, such as between 40 mm and 60 mm.
• the first projecting distance DIS1 may be larger than the glass unit 3 thickness, such as wherein said glass unit 3 thickness substantially corresponds to the distance between the exterior major surfaces 3su1, 3su2 of glass unit in a direction perpendicular to a major surface of the exterior glass sheet EGS.
• the major exterior surface 3su2 of the glass unit 3 is configured to abut the interior INT of the building.
• the oppositely directed exterior major surface 3su2 is configured to abut the building exterior EXT.
• the exterior glass sheet EGS, 3d overlaps the full width W1 of the structural bottom profile 2a_bo of the movable frame. This is obtained by a part of the exterior glass sheet EGS placed opposite to the further gap 7, and a further part of the glass sheet EGS that is part of the first projecting glass sheet portion 3p1.
• the exterior glass sheet EGS may not overlap the full width W1 of the structural bottom profile 2a_bo of the movable frame, but may instead only partly overlap the full width W1 of the structural bottom profile 2a_bo.
• the bottom edges 3b_be, 3a_be of the first 3a and second 3b glass sheet, and the bottom edge of the lamination layer are terminated at a location above a surface 2a_S3 of the bottom frame profile 2a_bo that faces the glass unit 3.
• the first 3a and second 3b glass sheet, and the lamination layer does not overlap the full with W1 of the bottom frame profile 3a_bo.
• one or more of the first 3a and/or second 3b glass sheet, and/or the lamination layer 3c, 6 may overlap the full with W1 of the bottom frame profile 3a_bo.
• the bottom frame profile 2a_bo comprises an exterior profile surface 2a_S1 that faces and abut/borders the first frame opening FO1 and a second exterior surface 2a_S2 that faces away from the first frame opening FO1 and faces towards the bottom profile 2b_b1 of the fixation frame 2b.
• the profile surface 2a_S1 comprises an outer extremity 2a_S1e which faces the first frame opening FO1.
• a gasket 26, such as a resilient gasket 26 is placed between the frame profile 2a surface 2a_S3 and the glass unit 3. This gasket may abut the outer major surface 3su2 of the glass unit 3 that faces towards the interior INT of the building, In the example of fig. 1 , the further glass sheet 3c comprises this glass sheet surface 3su2.
• the frame profile 2a surface 2a_S3 extends between the profile surfaces 2a_S1 and 2a_S2 and may comprise one or more recesses and/or protrusions for receiving, e.g., gaskets, for holding members 13, covers, supports 15, 19 and/or the like.
• the first projecting glass sheet portion 3p1 overlaps the width W2 of the further structural bottom profile 2b_bo.
• the first projecting glass sheet portion 3p1 may partly or fully overlap the further structural bottom profile 2b_bo. In other embodiments, the first projecting glass sheet portion 3p1 may stop/be terminated at a location so that it does not overlap the width W2 of the further structural bottom profile 2b_bo.
• the roof window may comprise a cladding member 13 for water tightening at the roof window bottom.
• the cladding member 13 comprises a covering part 13b which is configured to provide water tightening at the bottom BO part of the roof window 1.
• the covering part 13b extends in a direction away from a plane PL1 which comprises a major exterior surface 3su1 of a glass sheet EGS of the vacuum insulated glass unit to a position opposite the exterior of the fixation frame 2b so as to overlap a part of the fixation frame 2b profile 2b_bo.
• the covering part guides water towards the roof structure and/or a flashing (not illustrated in fig. 1 ).
• the cladding member 13 comprises a connection part 13a for fixation of the cladding member at the glass unit and/or the movable frame 2a.
• the covering part 13b is in some embodiments visible from the outside EXT of the window 1 when the movable frame 2a is in a closed position.
• connection part 13a overlaps the first projecting glass sheet portion 3p1.
• connection part 13a may additionally or alternatively overlap an extension 18 (the extension 18 is not illustrated in fig. 1 , see figures described further below).
• connection part 13a extends in between the fixation frame 2b and the first projecting glass sheet portion 3p1.
• connection part 13a may be attached to the glass unit 3 and/or the movable frame 2a, e.g., by means of an adhesive and/or by means of one or more mechanical fasteners.
• the covering part 13b moves together (see figs. 2A-2B ) with the movable frame 2a when it is opened.
• connection part 13a is unitary with the covering part 13b.
• the cladding member 13, such as the connection part 13a and/or covering part 13b may comprise or consist of a sheet material, such as a metal sheet material, such as comprising aluminium, iron or steel, or a polymer sheet material.
• the sheet material may comprise one or more bends, welds, soldering and/or the like to shape the cladding member.
• the sheet material may be structurally hard so as to not deform if subjected to outer forces such as, e.g., wind, rain, snow or the like.
• the sheet material comprising the cladding member 13 may have a thickness between 0.5 mm and 2 mm, such as between 0.5 mm and 1.3 mm, such as between 0.7 mm and 1.0 mm.
• the top cover 24 overlaps the movable frame 2a and/or the glass unit 3 at the roof window top TO. In fig. 1 , the top cover 24 overlap both the movable frame 2a profile 2a_to and a top part of the exterior major surface 3su1 of the vacuum insulated glass unit 3.
• the top cover may, e.g., comprise a sheet material, such as a metal sheet material, such as comprising aluminium, iron or steel, or a polymer sheet material.
• the sheet material of the top cover may comprise one or more bends, welding and/or solder provided in order to shape the top cover.
• the top cover 24 is attached to the fixation frame 2b by means of an adhesive and/or one or more mechanical fasteners such as comprising screws, clamps, pop rivets, soldering or welding and/or the like.
• the upper part of the movable frame 2a may move away from the top cover 24 (see also fig. 2B ) when the movable frame 2a is moved to an open position.
• the movable frame 2a may additionally be connected to the fixation frame by means of a hinge (not illustrated) arranged at the top TO, so as to provide a window where the movable frame 2a is both centre hung and top hung.
• This hinge may be arranged at the top hinge area THA indicated by a dotted circle in fig. 1 .
• Fig. 1 also illustrates (see also figs 2A-2B ) that the movable frame 2a comprises a water protection gasket member 14 that may extend from a position between the cladding member 13 and the exterior glass sheet EGS, and to a position at the bottom profile 2a_bo of the movable frame 2a.
• this gasket 14 extends in between the second outer surface 3su2 of the glass unit 3 and the surface 2a_S3 facing the second outer surface 3su2.
• the gasket 26 that is placed between the glass unit and the frame profile 2a_bo is integrated with the gasket member 14 between the first projecting glass sheet portion and the fixation frame 2b profile 2b_bo.
• the gasket 26 may or may not extend over substantially the full width W1 of the movable frame 2a bottom profile 2a_bo and may moreover extend over a part of or the full width W2 of the fixation frame where it provides gasket member 14.
• the gasket 26 and the gasket member 14 may also be separate gaskets in other embodiments of the present disclosure.
• Figs. 2A-2B illustrates schematically a cross section of a bottom part BO of a roof window 1, such as a centre hung roof window type and/or a top hung roof window type, according to embodiments of the present disclosure.
• the glass unit comprises an evacuated gap 4 and a further insulating gap 7 as, e.g., explained previously.
• the cladding covering part 13b extends in a direction away from a plane PL1 which comprises a major exterior surface 3su1 of a glass sheet of the vacuum insulated glass unit 3, to a position opposite the exterior of the fixation frame so as to overlap a part of the fixation frame 2b. This is when the movable frame 2a is in a closed position POS1. This provides water tightening at the window bottom BO.
• the roof window 1 may comprise a water tightening gasket 28 at the bottom BO, and the covering member 13b may comprise this 28 or engage with it 28 in the closed position POS1.
• This gasket solution 28 may, e.g., be arranged between the covering part of the movable frame/unit 2a, and a fixed cladding member 29 that is attached to the fixation frame 2b. See also fig. 37.
• covering part 13b extends in a direction away from a plane PL1 which comprises a major exterior surface 3su1 of a glass sheet of the vacuum insulated glass unit 3.
• a plane PL1 which comprises a major exterior surface 3su1 of a glass sheet of the vacuum insulated glass unit 3.
• the covering part 13b of the cladding member 13 does not longer extend to a position opposite the exterior of the fixation frame 2b.
• the exterior surface 3su1 of the vacuum insulated glass unit 3 may in some embodiments be configured to be arranged above an exterior second plane PL2 defined by a flashing 22 of the roof window 1 and/or defined by the roof structure 50, such as a roofing material 51 (see, e.g., fig. 3 ), when the roof window 1 is installed in a roof structure 50 of the building and the movable frame/unit 2a is in a closed position POS1.
• the angle between the second plane PL2 and the first plane PL1 may change when the movable frame 3a is opened.
• the gasket member 14 also extends in between the cladding member 13 of the movable frame 2a and the fixed cladding member 29 of the fixation frame 2b.
• the water protection gasket member in figs. 1-2B also comprises the resilient gasket 26.
• the gasket(s) 14 and/or 26 may be resilient gaskets, such as rubber gaskets, e.g., made from natural and/or synthetic rubber, silicone and/or the like.
• the roof window 1 may or may not comprise a step support 15 configured to support the first projecting glass sheet portion 3p1.
• the step support 15 may be placed between the first projecting glass sheet portion 3p1 and the frame profile 2a.
• the step support 15 is attached to a bottom profile 2a_bo of the movable frame 2a. This attachment of the step support 15 may be obtained by means of one or more adhesives and/or by means of one or more mechanical fasteners 34 such as pop rivets, clamps, hooks, screws and/or the like (not illustrated in fig. 2A-2B ).
• a step 3p1 support 15 is placed between the first projecting glass sheet portion 3p1 and a surface 2a_boa of one or both bottom profiles 2a_bo, 2b_bo facing the first projecting glass sheet portion 3p1.
• the step support 15 is configured to support the first projecting glass sheet portion 3p1 at least when the movable frame 2a is in a closed position.
• the step support 15 may be configured to support the first projecting glass sheet portion 3p1 also when the movable frame 2a is in an open position, e.g., if it 15 is attached to the movable frame 2a.
• the step support 15 transfers impacts acting on the first projecting glass sheet portion to the frame 2a and may hence provide a solution that is less likely to break, e.g., in case of hail storms or if other foreign objects strikes the first projecting glass sheet portion 1b.
• the step support 15 or supports may be attached to the first projecting glass sheet portion 3p1, such as by means of one or more an adhesives and/or mechanical fasteners. This attachment may be provided directly between the step support 15 and the glass sheet portion 3p1, or through one or more intermediate members, such as comprising, e.g., an extension support (extension is described in more details later on), a connection part 13a of a cladding member 13 and/or the like.
• the step support 15 may be attached to the projecting glass sheet portion 3p1 by means of adhesive 17, for example comprising glue and/or adhesive tape.
• a resilient member 17 may be arranged between a step support body and the glass sheet portion 3p1, e.g., for acting as a damper. In some embodiments, the resilient member 17 may or may not comprise the adhesive.
• connection member 13a and the step support 15 may be different parts.
• the connection member 13a extends in between the step support 15 and the projecting glass sheet part 3p1. These parts 13a, 15 may be attached to each other.
• the cladding member 13 and the support or support(s) 15 for supporting the projecting glass sheet portion 3p1 may be integrated in the same part/member. In some embodiments, the cladding member 13 and the step support or supports 15 for supporting the projecting glass sheet portion 3p1 may be a unitary part.
• Fig. 3 illustrates schematically a roof window according to embodiments of the present disclosure, installed in a building roof structure 50, seen from the outside.
• the building roof structure 50 comprises a roofing 51.
• the roofing 51 may comprise one or more of roof shingles, roof tiles, roofing felt/asphalt roofing, metal plates, fibre plates corrugated plates and/or the like.
• the roofing/ roofing material 51 acts as the primary, exterior weather shield at the building roof and is subjected to rain, snow, sunlight, hails, wind and/or the like.
• the roofing material 51 may, e.g., be attached to a structural roof structure such as roof battens or the like.
• the first projecting glass sheet portion 3p1 here overlaps, in this embodiment, both the bottom profile 2a_bo of the movable frame 2a, and the bottom profile 2b_bo of the fixation frame.
• These bottom profiles 2b_bo, 2a_bo are dashed and may not be visible from the outside through the glass unit 3, e.g., due to an enamel (embodiments hereof are described in more details further below) configured to hide frame 2 components/parts, edge sealings 9, 7a of the glass unit 3 and/or the like so that they are not visible through the glass unit 3 from the outside.
• the roof window 1 has a width direction WD extending between roof window sides SI1, SI2, and a height direction HD, where the height direction extends perpendicular to the width direction WD between window top TO and window bottom BO.
• the width direction WD may extend substantially horizontal.
• the roof window 1 may comprise water tightening elongated side water covers 21a, 21b which overlap the major exterior glass sheet EGS surface 3su1 of the vacuum insulated glass unit.
• the roof window in fig. 3 is of the centre hung type.
• the side water covers 21a, 21b in this example therefore comprises first side water covers 21b, comprising lower side water covers, attached to the movable frame 2a and/or insulating glass unit 3.
• first side water covers 21b moves together with it.
• the roof window 1 moreover comprises second side water covers 21a, comprising upper side water covers, attached to a fixation frame 2b of the roof window 1.
• the second side water covers 21a may be fixed to and unmovable relative to, the fixation frame 2b when the movable unit 2a is opened.
• the first and second side water covers 21a, 21b may be arranged in continuation of each other.
• the elongated side water covers 21a, 21b are longitudinal and extends in the height direction HD.
• the elongated side water covers 21a, 21b may overlap a side frame profile 2b_s of the fixation frame 2b.
• the elongated side water covers 21a, 21b may also overlap a side frame profile 2a_si of the movable frame 2a.
• the elongated side water covers 21a, 21b may, e.g., be made from or comprise a metal plate, a polymer plate and/or the like that acts as a water cover and may also be resistant in order to act as a shield against outer forces.
• the roof window flashing 22 is arranged to guide, e.g., rainwater onto the roofing material 51 of the building roof structure 50.
• Fig. 4 illustrates schematically a vacuum insulated glass unit 3 according to embodiments of the present disclosure, seen towards the major exterior surface 3su1, see surface 3su1 of figs 1-3 .
• the glass sheet 3a adjacent to the exterior glass sheet/third glass sheet 3d comprises projecting glass sheet portions 3p3, 3p4 which projects beyond the edge 3d_se, 3d_te of the exterior glass sheet 3d.
• At least one of the first glass sheets 3a and second glass sheets 3b ( 3b not illustrated) comprises a projecting glass sheet portion 3p3 which is configured to project beyond a side edge 3d_si of the exterior glass sheet EGS at one or both sides SI1, SI2 of the roof window 1.
• the roof window sides are however not illustrated in the figure in order to improve understanding and figure simplicity.
• Fig. 4 illustrates schematically a further embodiment of the present disclosure, wherein at least one of the first glass sheet 3a and second glass sheet 3b comprises a projecting glass sheet portion 3p4 which projects beyond a top edge 3d_to of the exterior glass sheet EGS.
• the projecting glass sheet portion 3p4 will projects beyond a top edge 3d_to of the exterior glass sheet EGS at the top (TO) of the roof window 1.
• the projecting distance of one or both projecting glass sheet portions 3p4, 3p3 may in some embodiments be more than 5 mm, such as more than 10 cm, such as more than 20 mm or more than 30 mm.
• the projecting distance of one or both projecting glass sheet portions 3p4, 3p3 may in some embodiments be between 5 mm and 100 mm, such as between 10 mm and 80 mm, such as between 15 mm and 50 mm.
• the projecting portions 3p3 may be omitted so that only projecting portion 3p4 is present.
• the projecting portion1 3p4 may be omitted so that only one or both projecting portion(s) 3p3 is/are present.
• the projecting portion 3p1 may be omitted.
• Fig. 4 moreover illustrates an embodiment of the present disclosure, where the exterior glass sheet 3d comprises a projecting glass sheet portion 3p1 that projects beyond a bottom edge 3a_be of one or more of the first and second glass sheets 3a, 3b (glass sheet 3b is however not illustrated in the figure) at the bottom. Also various embodiments of the projecting glass sheet portion 3p1 described above and/or below.
• the exterior glass sheet 3d extends beyond the bottom edge 3a_be of the adjacent glass sheet 3a.
• the exterior glass sheet 3d and the adjacent glass sheet 3a additionally or alternatively be arranged to extend beyond a bottom edge 3b_be (see, e.g., figs 1-2B ) of the second glass sheet 3b and/or a lamination glass sheet 3c.
• the exterior glass sheet 3d may not extend beyond the adjacent glass sheet 3a.
• the edge seal 7a enclosing the further insulating gap 7 is illustrated by dashed lines. It is understood that the further insulating gap 7 is proximate to the glass sheet 3d, and that the illustrated spacers/support structures 5 are seen through both the exterior, third glass sheet and the first glass sheet 3a, see, e.g., fig. 1 .
• Fig. 5 illustrates schematically a cross sectional view of a roof window 1 comprising a vacuum insulating glass unit 3 comprising projecting glass sheet portions 3p3 at the roof window side SI1, SI2.
• This vacuum insulating glass unit 3 may in some embodiments, e.g., be a vacuum insulating glass unit 3 as illustrated and/or described above in relation to fig. 4 .
• the first glass sheet projects 3p1 beyond the side edge 3d_se of the exterior glass sheet 3d, EGS.
• This provides a utility space 90 opposite to the edge seal 7a that encloses the further insulating gap 7.
• the utility space 90 is used for a water drainage channel along the glass unit side, and a U-shaped part, such as a profile, provides side walls 91 for the water drainage channel.
• the side water covers 21a guides water into that drainage channel.
• utility space 90 may be used for one or more of the following:
• the edge seal 9 may (as illustrated) or may not be arranged opposite the utility space and the projecting portion 3p3.
• the glass unit / vacuum insulated glass unit 3 may comprise the evacuated gap 4 and a further insulating gap such as a gas filled gap 7, such as a gap 7 containing argon.
• a vacuum insulated glass unit 3 comprising the gaps 7, 4 may have a U g ( U glazing ) value of below 0.5 W /( m 2 K ), such as below 0.4 W /( m 2 K ), such as below 0.3 W /( m 2 K ).
• the U g ( U glazing ) value of such a unit 3 may be between 0.2-0.5 W /( m 2 K ), such as between 0.25-0.4 W /( m 2 K ).
• the U g value may be determined at the centre portion of the glass unit 3.
• the centre portion of the glass unit 3 may be the location of the evacuated gap 4 arranged where two diagonally extending lines 49a, 49b, which extends between diagonally arranged corner portions of the edge seal 9, intersect.
• Fig. 5 also illustrates a further embodiment of the present disclosure, wherein the evacuated gap 4 overlaps (in this case fully overlaps) the edge seal 7a which encloses the further insulating gap 7.
• This is illustrated at the sides SI1, SI2 in fig. 5 , but it is understood that it may additionally or alternatively be provided at one or more of the top TO or bottom BO of the roof window 1.
• Fig. 5 illustrates a still further embodiment of the present disclosure, wherein the glass sheets 3a, 3b are arranged between the exterior glass sheet EGS and the lamination layer 3c, 6.
• Projecting glass sheet portions (also called second projecting glass sheet portion in this document) 3p2 of the first and second glass sheets 3a, 3b projects beyond the lamination layer 3c, 6.
• These portions 3p2 comprises the projecting glass sheet portions 3p3 that also projects beyond the side edge d3d_se of the exterior glass sheet EGS, 3d.
• the evacuated gap 4 is placed between the glass sheets 3a, 3b and comprises the surfaces 3a1, 3b1 on which support structures 5 support.
• the second projecting glass sheet portions 3p2 projects beyond the edge 6e of the lamination interlayer 6 and the lamination glass 3c at the roof window sides SI1, SI2.
• glass sheet 3a and/or 3b may additionally or alternatively project beyond a lamination interlayer 6 edge and lamination glass sheet 3c edge at the top TO of the roof window and/or the bottom BO of the roof window.
• the lamination layer interlayer 6 and/or the lamination glass sheet 3c may though still be configured to at least partly overlap a bottom frame profile 2a of the frame 2 as illustrated.
• the gasket 26 is placed between the frame profile 2a_bo and the lamination layer 6, 3c.
• the edge seal 9 may not be overlapped by the lamination layer 6, 3c.
• the exterior glass sheet 3d also projects beyond the edge 6e, 3c_be of the lamination layer 6, 3c. That may additionally or alternatively also be the case at the roof window top TO and/or bottom BO. In other embodiments of the present disclosure, the exterior glass sheet 3d may not project beyond the edge 6e, 3c_be of the lamination layer 6, 3c at sides SI1, SI2, top TO and/or bottom BO of the roof window.
• both insulating gaps 4, 7 overlaps the frame profile 2a of the movable frame. It is generally understood that one or both insulating gaps 4, 7 may overlap a frame profile at roof window bottom BO and/or top TO. See also figures described above and/or below.
• the evacuated gap 4 and/or further gap 7 may overlap at least 30%, such as at least 60% or at least 90% of a frame profile width W1 (see W1 of fig. 1 ) at one, more than one, or all, of roof window bottom BO, side(s) SI1, SI2 and/or top TO. See also figures described above and/or below.
• Fig. 5 illustrates moreover schematically an embodiment of the present disclosure, wherein the vacuum insulated glass unit 3 comprises a protection sealing 11.
• the protection sealing covers the edge seal 9, such as a solder edge seal, such as a glass solder edge seal or metal solder edge seal, enclosing the evacuated gap 4.
• both the first glass sheet 3a and second glass sheet 3b overlaps the protection sealing 11.
• the protection sealing 11 may be a resilient, water tightening sealing.
• the sealing may comprise a butyl sealing, a rubber sealing, a polymer sealing and/or the like.
• the protection sealing 11 may or may not adhere to one or more surfaces, such as the major surfaces 3a1, 3b of the glass sheets 3a, 3b that also faces the evacuated gap 4, a surface of the edge sealing 9 and/or the like.
• the protection sealing 11 protects the edge seal 9 from being exposed to water and may in some embodiment provide a substantially hermetic seal to protect the edge seal 9.
• the parts of the glass sheets 3a, 3b that projects beyond the protection sealing may help to provide further protection of the edge seal 9. Further embodiments of the protection sealing 11 according to various embodiments of the present disclosure are illustrated in figures described further below, see, e.g., figs. 11 and 12 .
• Fig. 6 illustrates schematically an embodiment of the present disclosure, wherein the exterior glass sheet EGS, 3d is smaller than the adjacent glass sheet 3a at the roof window top TO.
• the glass sheet 3a adjacent to the exterior glass sheet 3a EGS comprises a projecting glass sheet portion 3p4, also called fourth projecting glass sheet portion 3p4 in this document. See also, e.g., fig. 4 .
• This fourth projecting glass sheet portion 3p4 projects beyond the edge 3d_te of the exterior glass sheet 3a, EGS at the top TO of the roof window. This causes a step at the top of the glass sheet.
• a water channel 43 may in some embodiments be arranged at said step.
• such a water channel 43 may be omitted and the step may or may not be used for other purposes such as, e.g., exemplified above in relation to the side water channels 90 and/or below. It may in some embodiments be used for glass unit fixation, see, e.g., fig 17 .
• a protection sealing 11 may be arranged to cover the edge seal 9 enclosing the evacuated gap 4, e.g., as described above.
• the top cover 24 of the window 1 may overlap the exterior major surface 3su1 and comprise a covering part comprising a covering surface 24a for guiding water towards the exterior glass sheet surface 3su1.This covering part may extend towards the glass sheet surface 3su1.
• the top cover 24 may cover the channel/utility space 43.
• a top gasket 23, such as a resilient top gasket 23, may provide water tightening at the top TO between the top cover 24 and the glass unit 3.
• the top gasket 23, such as a rubber or silicone gasket, may be configured to deflect when the movable frame 2a is moved to the closed position (see, e.g., fig. 2A ). In fig. 19 , the movable frame 2a is in the closed position.
• the top gasket 23 comprises lips that abuts walls enclosing the water channel 43. In other embodiments, it 23 may comprise one or more lips or parts that abut a glass unit 3 surface such as the exterior surface 3su1.
• the gasket 23 may, e.g., be attached to/fixated to the top cover 24. See also fig. 25.
• the top cover 24 may comprise a sheet material, such as a metal or polymer sheet material for providing a hard exterior surface/shell of the roof window 1 for mechanical protection and water protection.
• the top cover 24 may be attached to or integrated in the top frame profile 2b_to of the fixation frame 2b.
• a handle 27 comprises a base part 27a extending between the top profile of the fixation frame 2b_to, and the top profile of the movable frame 2a_to. This 27a may be manipulated by means of the gripping part 27b of the handle 27, such as pivoted (not illustrated), to unlock the movable frame from the fixation frame 2b and/or to open the window.
• Fig. 7 illustrates schematically an embodiment of the present disclosure wherein the exterior glass sheet EGS is so to say displaced towards the bottom BO of the roof window 1 to provide the first projecting glass sheet portion 3p1.
• the glass sheets 3a, 3b projects beyond the top edge 3d_te of the exterior glass sheet EGS, e.g., as described in relation to fig. 6 .
• the exterior glass sheet EGS may be longer than the first and second glass sheets 3a, 3b and have a top edge 3d_te surface that either is substantially flush with the surface of top edge 3a_te and/or 3b_te of the glass sheets 3b and/or 3a ( see top TO in fig. 1 ) or the exterior glass sheet 3d,may extend/project beyond the top edge 3b_te and/or 3a_be of the first and/or second glass sheet.
• Fig. 8 illustrates a roof window 1 according to further, various embodiments of the present disclosure.
• a gripping member 8a extends in between the exterior glass sheet EGS, 3d, and the first glass sheet 3a, which is placed adjacent to the exterior glass sheet EGS.
• the further insulating gap 7 is placed between the exterior glass sheet 3d and the first glass sheet 3a.
• the first and second glass sheets 3a, 3b enclosing the evacuated gap 4, (and optionally also the lamination layer 6, 3c) may be placed between the gripping member 8a and the bottom profile 2a_bo of the movable frame 2a.
• the gripping member 8a may be a part, such as an integrated part, of a member 8 that is attached to the movable frame 2a by means of, e.g., one or more mechanical fasteners 34.
• the member 8 and/or the profile 2a_bo may also comprise a guide 36 (see fig. 9 ).
• the guide may comprise a recess and/or a protrusion in the frame profile that is configured to engage with a recess and/or a protrusion pf the member 8, so as to assure correct alignment and/or distance and/or the like between the glass unit 3 and the frame 2a.
• the guide may be omitted.
• one or more gripping members 8a may be arranged to hold the glass unit 3 at one or more locations at the side SI1, SI2, top TO and/or bottom BO of the roof window 1, see also fig. 17 .
• Fig. 8 illustrates schematically a further embodiment of the present disclosure, where an enamel layer 12 provides a hiding feature at the window bottom BO.
• the vacuum insulated glass unit 3 comprises an enamel layer 12, such as an enamel layer 12 which is substantially opaque to at least visible light.
• the enamel layer 12 covers, such as is applied to, a surface 3d1 of the exterior glass sheet EGS, 3d.
• the enamel layer 12 covers a major surface of the first projecting glass sheet portion 3p1.
• that covered surface is part of / comprised in the major surface 3d1 of the exterior glass sheet EGS configured to face towards the interior INT of the building when the roof window is installed in a building roof structure 50.
• the enamel may provide a masking.
• the enamel layer 12 may be visible through the exterior glass sheet 3d, EGS from the outside/exterior EXT of the roof window 1 but may hide further parts of the roof window as it is opaque.
• the enamel 12 may, in combination with the gasket 26, 14 described above, hide the frame and/or other parts of the roof window when looking though the exterior glass sheet from the exterior EXT of the building.
• the enamel 12 may not cover the full width W1 (see fig. 1 ) of the frame profile of the movable frame 3a, but the part of the frame profile 2a_bo that is not covered by the movable frame may be covered by the gasket 26.
• a part of the gasket 26 may be visible from the exterior EXT through the glass sheet.
• the enamel 12 and the gasket 26 may have the same colour, e.g., a dark colour such as grey or substantially black.
• the enamel layer 12 covers a major surface of the first projecting glass sheet portion 3p1 so as to hide one or more parts 13, 14, 15, 2a, 2b of the roof widow.
• the enamel layer 12 may cover substantially an entire major surface 3p1s of the first projecting glass sheet portion 3p1 in fig. 8 .
• the frame 2a, 2b and/or other parts 13, 15, 19 of the roof window may be hidden by means of a combination of the enamel layer 12 and a sealing gasket 26.
• the enamel layer 12 may in some embodiments comprise or be made from or comprise a glass material and/or a metal oxide layer. This may be applied during manufacturing of the glass sheet.
• a low-e coating may be removed from the glass sheet surface where the enamel layer is to be placed, prior to applying the enamel 12 material.
• This low-e coating may, e.g., be removed by means of laser.
• the enamel layer 12 may be attached to the glass sheet surface 3d1 already during hardening of the glass sheet if the glass sheet is a thermally tempered glass sheet. This enamel layer may be applied to the glass sheet and heated together with the glass sheet to a temperature above 500°C, such as above 600°C, in the hardening process of providing a thermally tempered glass sheet.
• the enamel layer 12 may have a thickness below 0.15 mm, such as below 0.1 mm, such as below 0.04 mm. in some embodiments, the thickness of the enamel layer may be between 0.001 mm and 0.1 mm, such as between 0.02 mm and 0.05 mm.
• the enamel layer 12 may in some embodiments be arranged along one or more of side, top and/or bottom of the glass unit 3.
• Fig. 8 moreover illustrates a still further embodiment of the present disclosure, wherein one or more low-e coatings 16a, 16b may be arranged at a glass sheet surface.
• low-e coatings 16a, 16b are illustrated by bold continuous lines at the surfaces 3a2, 3b1, respectively.
• a low-e coating 16a is applied on and covers major glass surface 3b1 of the second glass sheet 3b facing towards the evacuated insulating gap 4.
• a low-e coating 16b is applied to cover the major glass surface 3a2 of the first glass sheet 3a facing towards the further insulating gap 7.
• One or both of the low-e coatings 16a, 16b may in other embodiments be omitted.
• the low-e coating(s) 16a, 16b may e.g., in some embodiments, comprise one or more silver layers and/or one or more dielectric layers.
• the low-e coating 16a, 16b may be applied to the surface 3b1 and/or 3a2 that faces towards the exterior EXT of the building and faces away from the interior INT of the building when the movable frame 2a (if present) is in a closed position.
• the low-e coating 16a such as a low-e coating stack, may (as illustrated) be terminated before the edge seal 9 so as to not extend in between the edge seal 9 and the glass sheet 3b.
• the low-e coating 16a extends in between the support structures 5 and the glass surface 3b1.
• the low-e coating 16b such as a low-e coating stack, may not be terminated before the further edge seal 7a enclosing the gap 7, so that the low-e coating extends in between the edge seal 7a and the glass sheet 3a. In other embodiments, the low-e coating may be terminated before the edge seal 7a
• the low-e coating 16a may cover at least 90%, such as 95% or at least 98% of the surface 3b1 facing the gap 4.
• the low-e coating 16b may cover at least 95%, such as at least 98% of the surface 3a2 facing the gap 7.
• the low-e coating 16b may in some embodiments cover a larger percentage of the glass surface area of the surface 3a2 facing the gap 7 when compared to the percentage of the glass surface area of the surface 3b1 that faces the evacuated gap 4.
• Figs. 9-10 illustrates schematically various embodiments of the present disclosure, wherein an extension 18 is arranged in continuation of the bottom of the exterior glass sheet 3d, EGS and extends with an extension distance DIS2.
• the extension 18 is arranged opposite to the bottom edge 3d_be of the exterior glass sheet 3a, EGS, and is arranged in in continuation of the exterior glass sheet 3d.
• the exterior surface 18a of the extension 18 may help to provide an impression of a continuous, larger exterior surface 3su1 of the exterior glass sheet EGS surface 3su1.
• the extension 18 comprises an extension body 20.
• the extension body 20 provides and/or comprises the exterior surface 18a of the extension 18.
• the extension body 20 is supported by, such as carried by, an extension body support 19.
• the extension body 20 is attached to the extension body support 19.
• the extension body 20 may or may not be structural, such as may or may not contribute to the structural integrity of the extension 18 as such.
• an extension body 20 may comprises one or more functional parts.
• the one or more functional parts may comprise one or more electric circuitries and/or electric components.
• the one or more functional parts may be configured to provide an output such as an electric output, such as measurement and/or sensor output, an electric power supply output and/or the like.
• the extension body 20 may comprise or be a photovoltaic module.
• the photovoltaic module may be configured to charge a rechargeable battery of an actuator (not illustrated) such as a chain actuator or a piston actuator configured to open and/or close the movable frame.
• the actuator may comprise an electric motor for driving a window covering such as a blind or shutter and/or the like.
• the rechargeable battery may additionally supply, e.g., radio communication circuitry, data processors and/or the like arranged at the roof window, e.g., in relation to control of the actuator by means of radio signals or the like from a hand held remote control device and/or from a central controller.
• radio communication circuitry e.g., radio communication circuitry, data processors and/or the like arranged at the roof window, e.g., in relation to control of the actuator by means of radio signals or the like from a hand held remote control device and/or from a central controller.
• the extension body 20 may comprise one or more sensors such as comprising a rain sensor, a light sensor, a temperature sensor and/or a humidity sensor.
• the extension body support 19 may be an integrated part of a cladding member 13 as, e.g., previously described.
• the extension body support 19 may or may not be unitary with the cladding member 13.
• the extension body support 19 may be an integrated part of a step support 15 as, e.g., previously described.
• the extension 18 comprises the extension body support 19 which provides a structural, mechanical holding part for holding the extension body 20.
• an enamel layer 12 which is substantially opaque to at least visible light may cover, such as be applied to, a surface of the extension body 20. This is however not illustrated.
• the enamel may be substantially identical to the enamel layer 12 as previously described.
• the enamel layer 12 may be placed between the extension body 20 and an extension body support 19.
• the extension body 20 is supported by, such as carried by, a cladding member 13 of the roof window 1 which comprises the extension body support.
• the extension body support 19 is an integrated part of a member, such as a profile, comprising the cladding member 13 and also an integrated part of a step support 15. It is however understood that in some embodiments, one or both of the cladding member 13 and/or step support 15 may be separate to the extension body support 19.
• Fig. 9 moreover illustrates a further embodiment of the present disclosure where the extension body support 19 is attached to the bottom profile 2a_bo of the movable frame 2a so that the extension 18 is supported by the movable frame 2a, such as carried by the movable frame 2a.
• This is in fig. 9 provided by means of one or more fasteners 34 such as mechanical fasteners.
• the extension body support 19 comprises an attachment part 35.
• This attachment part 35 such as a plate and/or a bracket/mounting, is attached to the frame profile 2a_bo by means of the one or more mechanical fasteners 34.
• the one or more mechanical fasteners 34 may comprise one or more of screws, nails, clips, clamps and/or pop rivets.
• the fastener(s) 34 may be releasable so that the extension body support 19 may be detached from and attached to the movable frame 2a one or more times. In some embodiments, the mechanical fasteners(s) 34 may be reused in this process.
• One or more holes, recesses and/or protrusions may be provided in, such as integrated in, the attachment part 35 for receiving and/or providing one or more mechanical fasters.
• the extension body support 19 may comprise one or more installation guides 36.
• the installation guides may enable a user to faster and/or easier install the extension body support 19 precisely at the roof window, such as at the roof window profile.
• the installation guide 36 is integrated in the extension body support 19.
• the installation guide 36 comprises a protrusion for supporting on the bottom profile 2a_bo surface and thereby assure that the user attach the fastener(s) 34 at the correct location.
• Installation guide 36 may additionally or alternatively be provided in, such as be unitary with, cladding member and/or step support, if present.
• the installation guide 36 may in some embodiments also provide support for supporting the glass unit 3a. This is in fig. 9 provided as the extension body support 19 may also acts as step support 15 and may support a part of the first projecting glass sheet portion 3p1.
• Fig. 9 moreover illustrates a further embodiment wherein a sealing 37, such as a silicone material, a butyl material and/or the like is arranged between the bottom edge 3a_be surface of the exterior glass sheet EGS and the extension body 20. This may, e.g., prevent water from entering in between the glass sheet EGS and the body 20.
• the sealing 37 may or may not comprise an adhesive feature so as to adhere to the glass sheet EGS and/or the body 20.
• the sealing 37 may or may not abut the body 20 and glass sheet EGS. In fig. 13 , the sealing 37 abuts the extension body 20 and the glass sheet EGS
• Fig. 10 illustrates an embodiment of the present disclosure wherein the extension 18 is supported by, such as mainly carried by, the vacuum insulated glass unit 3.
• the extension 18 is supported by, such as mainly carried by, the first projecting glass sheet portion 3p1.
• This may, e.g., be provided by means of an adhesive which adheres a member 18b, such as a profile, of the extension 18 to the glass unit 3, - in fig. 9 it to the first projecting glass sheet portion 3p1, at a surface side of the glass unit facing towards the building interior INT.
• the support 19, (or a connection part of part of 18b of the extension - see fig. 10 ) may adhere to another glass sheet of the glass unit than the exterior glass sheet.
• the extension 18 may comprises a cladding member 13.
• This cladding member 13 is also described in more details above.
• the cladding member 13 comprises a covering part 13b which is configured to provide water tightening at the bottom BO part of the roof window 1.
• the cladding member 13 may comprise the extension, such as the extension body support 20, or vice versa. I.e. the same member of the roof window may provide several features such as one or more of the cladding member 13, step support 15 and/or a part 18, 19 of the extension 18.
• Fig. 10 moreover illustrates a further embodiment of the present disclosure wherein the extension body 20 is omitted and the extension 18 comprises an extension member 18b provided by a plate/sheet, such as a metal sheet/plate, e.g., comprising one or more of aluminium, iron or steel, and/or a polymer sheet/plate.
• the member 18b is arranged in continuation of the external glass sheet EGS bottom 3d_bo and provides/comprises the extension surface 18a.
• This surface 18a may or may not be substantially flush with the exterior glass sheet surface 3su1.
• This plate/sheet 18b comprises the exterior surface 18a of the extension.
• the exterior surface 18a may be provided by a painting layer, an enamel layer and/or the like applied at the plate/sheet.
• the exterior surface 18a of the extension may be substantially flush with the exterior major surface 3a2, 3su1 of the exterior glass sheet EGS which is configured to face away from the interior INT of the building.
• the extension surface 18a may be flush with the surface 3su1 over at least 1 cm, such as at least 3 cm or at least 5 cm from the exterior glass sheet bottom edge 3a_be.
• the extension surface 18a may vary with no more than ⁇ 5 mm, such as no more than ⁇ 3 mm, such as no more than ⁇ 1 mm from the plane PL1 over at least 1 cm, such as at least 3 cm or at least 5 cm from the exterior glass sheet bottom edge 3a_be surface.
• the exterior, visible surface 18a of the extension 18 may be arranged with a distance of less than 8 mm, such as less than 5 mm, such as less than 2 mm, from the plane PL1 comprising the exterior major surface 3su1 of the exterior glass sheet EGS of the vacuum insulated glass unit 3.
• the exterior, visible surface 18a of the extension 18 may be substantially flush with the exterior surface 3su1 of the exterior glass sheet EGS, 3a, 3d, at least proximate the bottom edge 3d_be of the exterior glass sheet EGS.
• the exterior, visible surface 18a of the extension 18 is arranged below the plane PL1 comprising the exterior major surface 3su1 of the exterior glass sheet EGS of the vacuum insulated glass unit 3, at least proximate a bottom edge 3d_be of the exterior glass sheet EGS, 3d. This may be provided in order to reduce or avoid water to be captured at the transition between the extension 18 and the exterior glass sheet.
• the surface 18a may be substantially parallel with the plane PL1. In some embodiments, the surface 18a may vary within ⁇ 5°, such as within ⁇ 3°, such as within ⁇ 1°, relative to the plane PL1 comprising the exterior surface 3su1 of the exterior glass sheet EGS.
• the surface 18a of the extension 18 may be substantially plane. Alternatively, it may comprise a slight, intended curvature, such as a convex curvature in the direction away from the bottom edge of the exterior glass sheet.
• the visible surface 18a of the extension 18 that can be seen from the outside of the building when the movable frame 2a is in a closed position may be provided by a glass sheet, a metal sheet and/or a polymer sheet.
• Fig. 11 illustrates an embodiment of the present disclosure wherein the first glass sheet 3a, that is arranged between the insulating gaps 4 and 7, projects beyond the edge 3b_se of the second glass sheet 3b that is placed opposite the evacuated gap 4.
• the second glass sheet 3b is between the lamination layer 6, 3c and the evacuated gap 4. This is illustrated at the roof window side SI1, but may additionally or alternatively be provided at the roof window top TO and/or bottom BO.
• the glass sheet 3a adjacent to the exterior glass sheet EGS, 3d comprises the projecting glass sheet portion 3p3 which projects beyond the edge 3d_se of the exterior glass sheet EGS at the roof window side.
• the same may or may not be provided at side SI2, see fig. 3 and/or 5.
• the exterior glass sheet EGS, 3d in fig. 11 projects beyond the edge 3b_se of the second glass sheet 3b.
• the edge 3d_se may be flush with the edge 3b_se or the edge 3b_se may extend beyond the edge 3d_se, (see, e.g., fig. 5 ).
• major surfaces of the first and second glass sheets 3a, 3b overlap the protection sealing 11.
• the protection sealing 11 extends beyond the edges of the glass sheet 3b. This may not be the case in other embodiments, see, e.g., fig. 5 .
• Fig. 12 illustrates an embodiment of the present disclosure wherein the second glass sheet 3b, is retracted relative to the glass sheet edges 3a_se and 3c_se of the first glass sheet 3a and second glass sheet 3b respectively.
• the second glass sheet 3b is arranged between the glass sheets 3a and 3c.
• the protection seal 11 in fig. 12 extends between the glass sheets 3c, 3a and overlap the surface of the second glass sheet 3b, and may attached to surfaces of the glass sheets 3a, 3c, 3b and/or the edge seal 9.
• the protection seal 11 protects the edge seal 9 as, e.g., previously described. This is illustrated at the roof window side SI1, but may additionally or alternatively be provided at the roof window top TO and/or bottom BO.
• the utility space 90 at the side SI1, SI2 (see, e.g., fig. 5 , 11 and/or 12 described above) and the utility space 43 at the top TO are disclosed to comprise a water channel for water drainage, the utility space 90 and/or 46 may as described previously be used for one or more additional or alternative other purposes.
• the water drainage may, e.g., be provided by providing a water channel above/opposite to the exterior surface 3su1, see fig. 17 .
• water side covers 21a, 21b may be arranged to guide water to that water channel instead.
• the gasket(s) 23 may support directly or indirectly on the surface 3su1.
• Fig. 13 illustrates schematically and in perspective a roof window 1 according to embodiments of the present disclosure.
• the roof window is of the centre hung type
• the movable frame 2a is configured to move, such as pivot, relative to the fixation frame 2b by means of one or more hinges 60
• the vacuum insulated glass unit 3 is attached to the movable frame 2a and is configured to move together with the movable frame 2a.
• Fig. 13 moreover illustrates a fixation frame according to embodiments of the present disclosure, comprising a longitudinal, structural top profile 2b_to, a longitudinal, structural bottom profile 2b_bo, and two longitudinal, structural side profiles 2b_si.
• the longitudinal directions of the top and bottom profiles are parallel.
• the longitudinal directions of the side profiles are parallel.
• the longitudinal direction of the side profiles of the fixation frame 2b are substantially perpendicular to the longitudinal directions of the top and bottom profiles of the fixation frame.
• Fig. 13 additionally illustrates a movable frame 2a according to embodiments of the present disclosure, comprising a longitudinal, structural top profile 2a_to, a longitudinal, structural bottom profile 2a_bo, and two longitudinal, structural side profiles 2a_si.
• the longitudinal directions of the top and bottom profiles are parallel.
• the longitudinal directions of the side profiles are parallel.
• the longitudinal direction of the side profiles of the movable frame 2a are substantially perpendicular to the longitudinal directions of the top and bottom profiles of the movable frame 2a.
• Hinges 60 interconnects the side profiles 2a_bo, 2b_bo and provides a rotation axis RAX that may be substantially horizontal.
• the rotation axis RAX is arranged between the top and bottom profiles and is substantially parallel to the longitudinal direction of these profiles.
• the centre hung roof window in fig. 37 may in some embodiments be top hung.
• the hinges 60 may comprise, or be connected, to arms extending to a top hinge (not illustrated) arranged at the roof window top TO.
• a separate top hinge may be provided. See, e.g., THA in fig. 1 .
• the centre hung roof window in fig. 13 may not be top hung.
• Fig. 14 illustrates schematically an embodiment of the present disclosure, where the roof window 1 comprises a glass unit 3 comprising the evacuated gap 4 and the further insulating gap 7.
• the further gap 7 overlaps the edge seal 9 enclosing the evacuated gap 4.
• the further gap 7 moreover extends beyond the bottom edge 3b_be of the second glass sheet 3b which comprises the surface 3b1 that faces the evacuated gap 4 and provides a part of the enclosing of the evacuated gap 4.
• the second glass sheet 3b is placed closer to the building interior INT than the first glass sheet 3a.
• the first glass sheet 3a is placed between the exterior glass sheet EGS and the second glass sheet 3b.
• the second glass sheet 3b is placed between the lamination layer 6, 3a and the evacuated gap 4.
• the evacuated gap 4 is placed between the first glass sheet 3a and the second glass sheet 3b.
• the exterior glass sheet EGS, 3d comprises the first projecting glass sheet portion 3p1 that projects beyond the bottom edge 3b_be of the second glass sheet 3b.
• the first glass sheet 3a also comprises a projecting glass sheet portion that projects beyond the bottom edge 3b_be of the second glass sheet 3b.
• the first glass sheet 3a may project beyond the bottom edge 3b_be of the second glass sheet 3b with a distance substantially corresponding to the distance DIS1 with which the exterior glass sheet EGS projects beyond the bottom edge 2b_bo of the second glass sheet.
• both the first glass sheet 3a and the exterior glass sheet EGS (third glass sheet) 3d extends beyond the bottom edge 3b_be of the second glass sheet 3b.
• the bottom edge of the second glass sheet 3b may project beyond the lamination layer 6, 3c.
• the further insulated (e.g. gas filled) gap 7 may project at least 5 mm, such as at least 10 mm, such as at least 20 mm, such as at least 30 mm or at least 40 mm beyond the bottom edge 3b_be of the second glass sheet 3b.
• the further insulated (e.g. gas filled) gap 7 may project beyond the bottom edge 3b_be of the second glass sheet 3b, at least with a distance corresponding to or larger than the edge seal 7a width.
• the second glass sheet 2b and/or edge seal 9 may partly overlap the edge seal 7a.
• the further insulated (e.g. gas filled) gap 7 may project between 10 mm and 200 mm, such as between 20 and 100 mm, such as between 25 mm and 50 mm beyond the bottom edge 3b_be of the second glass sheet 3b. In some embodiments, the further insulated (e.g. gas filled) gap 7 may project no more than 30 mm, such as no more than 25 mm beyond the bottom edge 3b_be of the second glass sheet.
• the evacuated gap 4 may as illustrated, in some embodiments of the present disclosure, overlap the movable frame bottom profile.
• the evacuated gap 4 may however in some embodiments not overlap the full width (see W1 in fig. 1 ) of the bottom profile 2a_bo. In other embodiments, the evacuated gap 4 may overlap the full width (see W1 in fig. 1 ) of the bottom profile 2a_bo.
• the further gap 7 overlaps the full width (see, e.g., W1 of fig. 1 ) of the bottom frame profile 2a_bo of the movable frame 2a, and projects beyond the surface side of the profile 2a_bo that faces away from the first frame opening FO1.
• the further insulating gap 7 may extend to a position opposite the fixation frame bottom profile 2b_bo. In other embodiments, the gap 7 may not extend to a position opposite the fixation frame bottom profile 2b_bo.
• the first projecting glass sheet portion 3p1 of the exterior glass sheet EGS which provides a part of the enclosing of the further insulating gap 7, does not project beyond the bottom edge 3a_be of the first glass sheet 3a.
• the first glass sheet provides both a part of the enclosing of both the evacuated gap 4 and the further insulating gap 7, and is placed between the further insulating gap 7 and the evacuated gap 4.
• the first projecting glass sheet portion 3p1 may however project beyond the bottom edge 3a_be of the first glass sheet 3a.
• Fig. 14 moreover illustrates an embodiment of the present disclosure, wherein an enamel layer 12 is arranged at the major surface of the exterior glass sheet EGS 3d which faces the further insulating gap 7.
• Fig. 14 moreover illustrates a further embodiment of the present disclosure, wherein a cladding member 13 comprising a covering part 13b is provided.
• the cladding member 13 may in embodiments be provided as, e.g., described above, e.g., in relation to various embodiments of the present disclosure.
• the cladding member 13 comprises a connection part 13a, which overlaps the exterior major surface 3su1 of the exterior glass sheet EGS that is configured to face away from the building interior INT and towards the exterior EXT of the building.
• the connection part 13a may be attached to the glass unit surface 3su1 by means of one or more adhesives 13c.
• Fig. 15 illustrates schematically a roof window according to embodiments of the present disclosure, installed in a building roof structure 50, seen from the outside. See also description above relating to, e.g., fig. 3 .
• the roof window comprises an extension 18 at the roof window 1 bottom BO as, e.g., described in relation to various embodiments described above.
• the extension comprises an extension body 20, but in other embodiments, an extension member 18b as, e.g., illustrated in fig. 10 may be provided instead.
• a hook part 19b and a holding wall 19a are visible in fig. 15 . See also embodiments of fig. 16 .
• the extension body support 19 described above may comprise the hook part 19b and holding wall 19a and/or the fastener 20a.
• two hook parts 19b are illustrated as being discretely arranged at the holding wall 19a along the width direction WD of the roof window 1. More or less than two hook parts 19b may be provided in other embodiments.
• a single elongated hook part 19b may be provided and extend along at least 80%, at least 90% or substantially along the full width of the glass unit 3, in the width direction WD.
• Dash-dotted line referred to as 2a indicates the surface of the bottom profile 2a_bo of the movable frame that faces and abuts the first frame opening
• dashed line referred to with 3b_be indicates the bottom edge of the second glass sheet 3b beyond which the first projecting glass sheet portion 3p1 projects.
• a mechanical holding member comprises the wall 19a which is placed opposite to the bottom edge 3d_be of the exterior glass sheet EGS - in the illustrated example glass sheet 3a.
• the mechanical holding member may in some further embodiments comprise the hook part 19b, such as a clamping part, extending from the wall 19a to a position opposite to the exterior major surface 3su1 of the exterior glass sheet EGS, 3d at the window bottom BO.
• the hook part 19b and/or wall 19a is configured to secure the exterior glass sheet 3a, EGS at the frame 2, in this case to the movable frame 2a.
• the hook part 19b may, e.g., provide securing of the glass unit to the frame.
• the hook part 19b and/or wall 19a may provide a safer solution in more extreme situations where wind or other forces provides that the vacuum insulated glass unit is pushed or pulled in a direction away from the exterior surface 3su1 of the vacuum insulated glass unit 3 which faces the exterior of the building, it may provide safety in case of fire and/or the like.
• the member such as a profile, comprising the wall 19a and/or hook 19b may be attached to the movable frame 2a, e.g., by means of one or more brackets 35 and/or one or more mechanical fasteners 34, see figs. 9 and 16 .
• Fig. 16 illustrates schematically an embodiment of a roof window, wherein the further insulating gap 7 is placed proximate the building exterior EXT.
• the third glass sheet 3d is the exterior glass sheet EGS and comprises the first projecting glass sheet portion 3p1 at the roof window bottom BO.
• the evacuated gap 4 is placed between the further insulating gap 7 and a lamination layer 6, 3c.
• the first projecting glass sheet portion 3p1 extends beyond both the bottom edge 3a_be of the first glass sheet 3a and the bottom edge 3b_be of the second glass sheet 3b.
• the first glass sheet 3a is placed between the exterior glass sheet EGS and the second glass sheet 3b.
• the second glass sheet 2a is placed between the lamination layer 6, 3a and the evacuated gap 4.
• the evacuated gap 4 is placed between the first glass sheet 3a and the second glass sheet 3b.
• Fig. 16 illustrates a further embodiment of the present disclosure, wherein an extension 18 provided.
• the extension 18 comprises an extension body 20 and an extension body support 19, e.g., as described according to various embodiments.
• the extension 18 may generally comprise one or more of the features as described above, for example as described in relation to one or more of figs. 9-10 and/or fig. 15 .
• the extension body 20 may be omitted. See, e.g., fig. 15 , 16 or 17 .
• the extension 18 is arranged in continuation of the exterior glass sheet EGS, 3d.
• the extension body 20 may, e.g., be replaceable.
• the extension 18 may comprise a part that extends to, and is attached to, the movable frame bottom profile 2a_bo. This may in some embodiments be provided at a location in between the bottom profile 3a_bo of the movable frame 2a and the fixation frame bottom profile, e.g., by means of bracket(s) 35 and one or more mechanical fastener(s) 34.
• Fig. 17 illustrates an embodiment of the present disclosure, wherein a gripping member extends to grab the projecting glass sheet portion 3p3 at a roof window side SI1, so as to fixate the glass unit 3 to the movable frame.
• the gripping member hence extends into the utility space provided by means of the projecting portion(s) of one or more of the glass sheets 3a, 3b, 3c.
• a water drainage channel is arranged above/opposite to the exterior surface 3su1.
• the side water cover extends to guide water into that channel.
• the channel is enclosed by walls 91.
• the member 8 comprising the gripping member 8a may comprise or be made from a metal, such as aluminium or steel. In other embodiments, another suitable material may be used.
• the gripping member 8a extends over a surface of the first glass sheet 3a that faces away from the frame 2a profile to which it is attached.
• the gripping member 8a may hold onto the second glass sheet 3b and/or the lamination glass 3c. This may, e.g., be the case if the lamination glass 3c projects beyond the second glass sheet 3b and/or the first glass sheet 3a, or if the second glass sheet 3b extend beyond the edge of the first glass sheet 3a.
• the member 8 comprising the gripping member 8a may be attached 34 to the respective profile of the movable frame 2a at a surface of that profile facing the fixation frame (as, e.g., illustrated in fig. 11 and 17 , and/or it may be attached at a surface of the profile of the movable frame 2a facing the glass unit 3.
• One or more mechanical fasteners 34 attach the member 8 to the profile 2a_si.
• the one or more mechanical fasteners 34 may comprise one or more of screws, nails, clips, clamps and/or pop rivets.
• the fastener(s) 34 may be releasable so that the attached member 19, 35, 8 may be detached from, and attached to, the movable frame 2a one or more times.
• the mechanical fasteners(s) 34 may be reused in this process.
• the same member such as an elongated profile, may comprise one, more than one, or all of:
• the same member may or may not comprise both the/a cladding member 13 comprising the covering part 13b and one or more or more step support(s) 15, 15a, 15b.
• the cladding member 13 and the step support 15 may or may not be unitary parts of the same member.
• the cladding 13 may be attached to the glass unit 3 at an exterior major surface 3su1 or an interior major surface of a glass sheet 3a, 3d, 3b, 3c, see, e.g., fig.
• the support(s) 15 may be attached to a profile 2a_bo of the movable frame, e.g., by means of an attachment part 35 and an adhesive and/or mechanical fastener(s) 34.
• the same member may comprise none of, or one or both of, the cladding member 13, 13b and one or more or more step support(s) 15. If the same member comprises the extension 18 and one or both of the covering part 13b of the cladding and the step support(s), one or both of these 13, 15 may or may not be unitary parts of the member.
• one or both of the cladding member 13 and/or step support 15 may be separate to the extension body support 19.
• a part such as a profile, comprising one or more of:
• Figs. 18-24 illustrates various embodiments of the present disclosure, wherein an edge of the vacuum insulated glass unit 3 is insulated by means of a heat insulation 95.
• the vacuum insulated glass unit 3 edge may be encapsulated by, such as overmoulded by, the edge heat insulation 95.
• the edge heat insulation 95 may also be referred to as heat insulation encapsulation below, but is understood that in various embodiments of the present disclosure, it 95 may, or may not, as such, constitute a full glass unit edge encapsulation. In other embodiments, however, the heat insulation 95 may substantially fully encapsulate the glass unit 3 edge.
• the edge heat insulation 95 extends so as to overlap the edge seal 9 which encloses the evacuated gap 4, at three sides. It 95 extends:
• the edge heat insulation 95 overlaps a part of the surface of the further edge seal 9a that faces away from the further insulating gap 7. Hence, a part of the utility space 90 provided due to the projecting portion 3p3 is used by a part of the heat insulation encapsulation 95.
• the heat insulation encapsulation 95 may extend over exterior surface 3su2 instead of 3b2.
• the edge heat insulation 95 may overlap the full width of the edge seal 9 material, and may as illustrated extend over a part of one or both of the major surfaces 3a2 and/or 3b2 (or 3su1) from the glass sheet edge, so as to overlap the evacuated gap 4. This may help to reduce cold bridge issues due to the edge seal 9 material that may, e.g., comprise a solder material.
• edge heat insulation 95 extends to overlap parts of oppositely directed major exterior surfaces 3a2, 3b2 of glass sheets 3a, 3b of the vacuum insulated glass unit 3.
• the heat insulation encapsulation 95 material may also provide a protection sealing 11 for protecting the edge seal 9, as, e.g., previously described.
• a separate protection sealing 11 may be provided between the edge seal 9 and the heat insulation encapsulation 95 material.
• the edge heat insulation 95 may adhere to and/or abut the glass unit 3. In some embodiments, it 95 may adhere to and/or abut said oppositely directed major exterior surfaces 3a2, 3b2 and/or one or more other surfaces of glass sheets of the glass unit. This adhesion may be obtained by the inherent properties of the insulation material, or may be obtained by means of an adhesive layer (not illustrated) arranged between the heat insulation material 95 material and glass sheets 3a, 3b and/or 3c of the glass unit 3.
• the heat insulation 95 may not adhere to the glass unit 3.
• the heat insulation encapsulation 95 comprises a heat insulating material having a thermal conductivity below 0.1 W mK , such as below 0.05 W mK , such as below 0.02 W mK .
• the heat insulation encapsulation 95 comprises a heat insulating material having a thermal conductivity between 0,009 W mK and 0.1 W mK , such as between 0.01 W mK and 0.05 W mK , such as between 0.015 W mK and 0.04 W mK
• the edge insulation 95 material may in some embodiments of the present disclosure comprise one or more of
• the vacuum insulated glass unit 3 comprises the heat insulation encapsulation 95.
• the heat insulation encapsulation 95 may be attached to the glass unit 3 (and possibly also a fixation profile member 8) already prior to glass unit 3 installation at the frame 2. Hence, if removing the glass unit 3 from the frame, the insulation material 95 will be removed from the frame too.
• the edge heat insulation 95 may be attached to the frame profile. In further embodiments, the edge heat insulation 95 may neither be attached to the frame profile nor to the glass unit 3 by adhesive.
• the edge heat insulation may or may not be clamped between the vacuum insulated glass unit and an exterior surface of the frame profile.
• the heat insulation encapsulation 95 overlaps edge surfaces of the glass sheets 3a, 3b which comprises the oppositely directed major exterior surfaces 3a2, 3b2.
• the heat insulation encapsulation 95 extends to a position between the exterior glass unit surface 3su2 and a surface of the movable frame 2a which faces towards the vacuum insulated glass unit 3.
• Fig. 19 (and some figures described further below) moreover illustrates further embodiments of the present disclosure, wherein the utility space 90 is used for multiple purposes.
• edge heat insulation 95 is provided at the glass unit 3 edge at the utility space 90. See, e.g., embodiments hereof described above and/or below.
• a profile member 8 such as a metal profile, comprises a gripping part 8a, see, e.g., also description above.
• the gripping part 8a extends over a glass sheet surface 3a2 facing away from the building interior INT.
• the gripping part 8a extends into the utility space 90.
• the gripping member 8a is part of the member 8, which is attached to the movable frame 2a profile by means of, e.g., one or more mechanical fasteners 34. In this case it 8 extends to a position between the frame profile of the movable frame 2a and the frame profile of the fixation frame 2b.
• a water drainage channel is moreover provided at the utility space 90 between walls 91.
• the profile member 8 provides the walls 91. It is understood that in some embodiments, the profile member 8 may provide one or both water drainage channel walls 91, or a separate member (not illustrated) may provide one or both water drainage walls 91. Side water cover 21a is configured to guide water from a surface thereof and into the water drainage channel arranged between the walls 91.
• the heat insulation encapsulation 95 material is placed between the profile member 8 and the glass unit 3. This may also provide mechanical protection and/or water protection of the heat insulation encapsulation 95.
• the edge insulation material 95 may extend between the edge seal 7a, over the edges of the glass sheets 3a, 3b (and possibly also 3c) and to the frame profile 2a or to an insulating material, such as a gasket (not illustrated in fig 19 ) arranged between the profile 2a_si and the edge insulation 95.
• the bottom of the drainage channel at the utility space 90 is provided by means of a part of the gripping member 8a.
• the gripping member 8a may provide a clamping force onto the heat insulation encapsulation 95 material. In other embodiments, it 8a may substantially not provide a clamping force onto the heat insulation encapsulation 95.
• the gripping member 8a may extend in between the heat insulation encapsulation 95 material and the glass unit 3. This may, e.g., depend on the structural integrity of the heat insulation encapsulation 95 material.
• the edge heat insulation 95 extends so as to overlap to three sides of the edge seal 9. These comprises the edge seal 9 configured to face the building exterior EXT, the edge seal side facing away from the evacuated gap 4, and the edge seal side configured to face the building interior INT.
• Figs. 20 and 21 illustrates various embodiments of the present disclosure, wherein insulation encapsulation 95 material is arranged in the utility space 90, but does not extend to an oppositely directed surface 3b2 of the glass unit 3.
• the insulation material 95 overlap the full height of the surface of the further edge seal 7a that faces away from the further insulating gap 7. This may however also be omitted (see fig. 21 ) as the further edge seal 7a in some embodiments may provide sufficient heat insulation on its own.
• the edge heat insulation 95 covers a surface of the projecting portion 3p3 which faces the utility space 90, and thereby it 95 overlaps the width of the edge seal and a part of the evacuated gap 4. Moreover, it 95 extend to cover glass sheet edge 3a_se, 3b_se surfaces that extends between major surfaces 3a1, 3a2 and 3b1, 3b2, respectively, of the respective glass sheets 3a, 3b. Also, it 95 overlaps the edge seal 9 between major surfaces 3a1, 3b1. It 95 does however not extend to exterior surface of the projecting portion 3p3 that is opposite to and faces away from the utility space.
• the edge insulation material 95 extends towards the frame profile 3a_si, and may abut the profile, or may abut a heat insulating member, such as a gasket (not illustrated in fig. 20 ) that is in that case placed between the profile 2a_si and the heat insulation material 95.
• a heat insulating member such as a gasket (not illustrated in fig. 20 ) that is in that case placed between the profile 2a_si and the heat insulation material 95.
• the edge heat insulation 95 extends so as to overlap to two sides of the edge seal 9. These comprises the edge seal 9 side configured to face the building exterior EXT, and the edge seal side facing away from the evacuated gap 4.
• the edge seal 9 side configured to face the building interior INT is un-overlapped by the edge heat insulation 95.
• the insulation material 95 overlaps and covers a surface of the projecting portion 3p3 which faces the utility space 91, and thereby it 95 overlaps the width of the edge seal 9 and a part of the evacuated gap 4.
• the insulation material 95 does however not extend to cover glass sheet edge 3a_se, 3b_se surfaces that extends between major surfaces 3a1, 3a2 ; 3b1, 3b2 of the respective glass sheets 3a, 3b, nor does it 95 extend to cover the surface 3b2 of the projecting portion 3p3 that is opposite to and faces away from the utility space 90. It 95 neither covers the full height/thickness of the further edge seal 7a.
• the edge heat insulation 95 extends so as to overlap one side of the edge seal 9. This is the side configured to face the building exterior and the utility space 9.
• the edge seal side facing away from the evacuated gap 4, and the and the edge seal side configured to face the building interior INT, are un-overlapped by the edge heat insulation 95.
• the member 8 may be arranged with a distance from the edges of the glass sheets 3a, 3b so as to reduce heat transfer between member 8 and glass sheets 3a, 3b.
• An air gap is in fig. 21 provided between glass unit member 8 opposite the edge surfaces of the glass sheets 3a, 3b, but edge insulation 95 may also in some embodiments be placed therebetween, see fig. 20 .
• Fig. 22 illustrates an embodiment of the present disclosure, where heat insulation encapsulation 95 material is arranged to cover the glass unit 3 edge at the roof window bottom BO, and overlaps the edge seal 9.
• the insulation 95 extend to cover and overlap the lamination glass sheet 3c.
• it may instead just encapsulate the glass sheets 3a, 3b, e.g., as illustrated in one or more of figs. 18-21 .
• the member 8 comprising gripping part 8a for glass unit 3 fixation may in embodiments be omitted from one or more of roof window top TO, bottom BO and/or sides SI1, SI2.
• the exterior glass sheet EGS, 3d and the adjacent glass sheet 3a projects beyond the surface of the further edge seal 7a that faces away from the further insulating gap 7. This provides a utility space 99 for, e.g., heat insulation 93 and/or gripping member.
• the gripping member 8a may instead engage the exterior glass sheet EGS (not illustrated in fig. 22 ).
• the gripping member 8a and profile 8 may comprise, such as be integrated with, the cladding 13, 13b.
• a solution comprising one or more of gripping member, 8a edge insulation 93 and/or water drainage channel as illustrated in one or more figs. 19-22 and/or described in relation thereto may additionally or alternatively be used at the glass unit at the top TO (see, e.g., utility space 43 in figs 6-7 ).
• a solution comprising one or more of gripping member 8a and/or edge insulation 93 as illustrated in one or more figs. 19-21 and/or described in relation thereto may additionally or alternatively be used at the glass unit at the bottom BO of the roof window, see also fig. 22 .
• the insulating material 93 may, e.g., be omitted due to, e.g., a larger frame overlap of the evacuated gap 4 and/or further insulating gap 7. see, e.g., fig. 1-2B and/or fig. 22 .
• the glass unit 3, such as including a part of one or both insulating gaps 7, 4 may even, at least partly, overlap the roof window bottom profile 2b_bo of the fixation frame 2b.
• the heat insulation 95 may be configured so as to reduce heat transfer at the area of the edge seal 9 enclosing the evacuated gap 4 when compared to a scenario where the heat insulation 95 is omitted.
• the edge heat insulation 95 substantially fully occupies the utility space 90 .
• the outer boundary 90a of the cross section of the utility space 90 is indicated by the dash-dotted, bold rectangle. This 90a is defined by/ enclosed by:
• Fig. 24 illustrates an embodiment of the present disclosure, wherein substantially the same material composition used for the edge seal 7a enclosing the further insulated gap 7, is used for the edge heat insulation 95.
• An example of a material 7a, 95 may comprise a silicone edge seal material, such as a silicone material comprising moisture absorbing particles.
• An example of a material 7a, 95 for the edge seal 7a and the edge heat insulation 95 may, e.g., in some embodiments comprise one or more of silicone, EPDM (ethylene propylene diene) rubber, EPDM (ethylene propylene diene monomer) rubber or an/another thermoplastic spacer.
• silicone e.g., silicone, EPDM (ethylene propylene diene) rubber, EPDM (ethylene propylene diene monomer) rubber or an/another thermoplastic spacer.
• the edge seal 7a and/or edge heat insulation 95 may in some embodiments comprise or consist of an extrudable edge seal material and/or a thermoplastic edge seal material such as a thermoplastic elastomer edge seal.
• edge seal 7a and/or edge heat insulation 95 in some embodiments may comprise or consist of an extrudable edge seal material.
• the edge seal 7a and the edge heat insulation 95 material may be unitary. In other embodiments, the edge seal 7a and the edge heat insulation 95 may not be unitary.
• the edge seal 7a and the edge heat insulation 95 may comprise different heat insulating materials.
• the edge seal 7a and the edge heat insulation 95 may abut.
• the evacuated gap 4 fully overlaps the edge seal 7a which encloses the further insulating gap 7. In other embodiments, the evacuated gap 4 may partly overlap the edge seal 7a which encloses the further insulating gap 7.
• the heat insulation fully overlap the width of the edge seal 9 at least one side, e.g., the side that faces the utility space.
• the heat insulation may only partly overlap the width of the edge seal 9, for example in an embodiment where the further edge seal 7a overlap a part of the edge seal 9 width.
• the frame 2 may comprise a movable frame 2a and a fixation frame 2b.
• the movable frame 2a may be omitted, and hence, the frame may alone comprise a fixation frame being attached to a building roof structure.
• the glass unit 3 may be unmovable when installed in the building roof structure.
• the glass unit comprises the first projecting glass sheet portion 3p1 at the roof window bottom. It is however understood that in some embodiments (not illustrated) that projecting portion 3p1 may be omitted. Instead, an extension 18 as, e.g., described above according to various embodiments of the present disclosure, may be provided.

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• 2024
  • 2024-03-14 EP EP24163488.0A patent/EP4617466A1/fr active Pending

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