DE202009000031U1 - Skylight unit for flat roofs or slightly inclined roofs - Google Patents

Abstract

Skylight unit (1) for flat roofs or slightly inclined roofs for installation in an opening (20) in the roof (2) with
- An over the opening (20) encircling skylight (10) having a bottom (11) on which the skylight support ring (10) on the outside of the roof (2) is placed around the opening (20), an inside (12), an outer side (13) and an upper side (14), and
- A on the top (14) of the skylight support ring (10) sealingly resting disc cover (15),
characterized in that the inner side (12) of the Oberlichtaufsetzkranzes (10) is formed circumferentially of the opening (20) inclined so that the light passage opening formed by the Oberlichtaufsetzkranz (10) widens upwardly funnel-shaped.

Description

The The invention relates to a skylight unit for flat roofs or slightly inclined roofs for installation in an opening in the roof with a skylight around the opening skylight, the one underside on which the skylight spreader on the outside is placed on the roof around the opening, an inside, has an outer side and an upper side, and one on the top of the skylight cap sit sealingly Disc cover.

Such a skylight unit is for example from the DE 295 19 937 U1 known. Therein is described a skylight curb which has a substantially horizontal foot flange, an inwardly inclined ascending wall portion and a connecting rail, wherein the connecting rail is formed in a special way to ensure a permanently tight connection of the dome lamp curb on the roof.

Furthermore, from the DE 198 30 324 A1 a Lichtkuppeleinheit known, which also has an inwardly inclined curb on which a light dome equipped with a curved disc element is hinged hinged.

To provide sufficient stability of the curb, this is often made of sheet metal profiles. In order to achieve a thermal decoupling of such a metal curb, is in the DE 203 05 342 U1 Described a thermal decoupling of the raised rim formed from the outer profile and inner profile.

nevertheless is the luminous efficacy and thermal insulation known Skylight units insufficient.

Starting from a skylight unit according to the DE 295 19 937 It is an object of the invention to improve the daylight yield for a given size of the opening in the roof, the heat input and thermal insulation.

Solved This object is achieved with a skylight unit according to claim 1.

By the upward funnel-shaped extended light passage opening, formed by the inclined formed inner sides of the skylight Aufsetzkranzes Be, emits a larger amount of light due the enlarged areas of the disc cover on the skylight unit. The light rays penetrate this largely undisturbed by the window cover in the building interior one. In addition, the sun is more the possibility given that sunbeams directly through the opening in the Roof penetrate into the interior of the building without shading can.

Corresponding is the energy input, ie the warm-up in an inventively designed Skylight unit enlarged. The inclination of the inside has an angle to the surface normal defined to the roof from 20 ° to 75 °, especially 30 ° to 60 °, more preferably 45 °.

If the skylight spreader out according to the geometry of the opening composite garland elements consists, in particular in rectangular openings from four wreath elements, the skylight can from the individual wreath elements are modularly assembled. It can thus skylight units for a variety of openings be put together individually. For example, you can also triangular, pentagonal, hexagonal and generally polygonal opening shapes be provided with a corresponding skylight unit.

Provided the rim elements have a substantially triangular cross-section have, with the outside and the bottom respectively a catheter of the triangular cross section and the inside the hypotenuse of the triangular cross-section, has the skylight a large footprint on the roof, so that the skylight unit directly without otherwise usual Reinforcement elements, such as wooden frame, on the insulation material of the flat roof can be placed. The loads the skylight unit will be evenly on the Dachdämmmaterial distributed. Accordingly, thermal bridges avoided at the opening for the skylight unit. The skylight unit can also be used on a large area the roof, the opening to be glued all around.

If the ring elements are self-supporting extruded profiles, can the profiles secure the loads acting on the skylight unit pick up and guide into the roof construction. When using of hollow bodies made of fiber-reinforced plastics becomes an excessively high thermal conductivity avoided.

Thereby, that the hollow body with a high heat insulating Material, in particular polyurethane structural foam, are filled, is the thermal insulation in the skylight unit further improved. With PUR-Strukturschaum becomes the self-supporting extruded profile completely foamed in the interior and thus stiffened and at the same time thermal insulation technology optimized. PUR structural foam has a thermal conductivity λ of 0.025 to 0.030 watts (m · K).

The modular structure of the skylight units can be achieved by the Kranzele Mente have at their ends miter cuts, where they are connected to the circulating around the opening skylight ring, in particular glued, are. In particular, the fiber-reinforced extruded profiles constructed as sandwich with PUR structural foam core can be glued permanently along their miter cuts with suitable adhesives. Thus, for example, pultrusion endlessly produced fiber-reinforced plastic profiles can be produced in the pultrusion, which can be tailored after foaming the cavity for the particular application either on site or custom made in a workshop.

alternative Corner elements are provided, which together with right-angled cut to length Wreath elements for the skylight around the opening connected, in particular glued, are. Corresponding to everyone Corner of the skylight unit to provide a corner element, so that at a quadrangular opening four corner elements and in between four or more inserted ring elements are provided. Accordingly, the number of splices of 4 to 8 or more compared to miter cuts.

If below the disc cover spaced from this a lower disc is provided, is virtually a double glazing of the skylight unit realized. This improves the thermal insulation. Preferably, the lower disc is located in a circumferential receptacle in Skylight set-up near its bottom. Further improved the thermal insulation effect is characterized by having a circumferential Seal is provided in the receptacle. It thus forms between the disc cover and the lower disc a thermal bridge-free Air chamber zone, for example, the two discs a distance of about 10 cm can have. Accordingly high is the Thermal insulation.

When opening means to open the window cover, if necessary together with the Lower pane are provided, the skylight unit can also be used for ventilation and / or for the discharge of flue gases and heat accordingly so-called RWA systems are used.

Prefers the opening means comprise a lifting device which the disc cover and possibly the lower disc substantially raises horizontally, leaving an all-sided lift off both the disc cover as well as the lower pane - if any - reached becomes. A horizontal take-off is an advantage, as it makes it more versatile an opening gap is created and thus a quick exchange of air is possible. Furthermore, it is advantageous that in a horizontal Raising the disc cover and the lower disc only small additional wind loads as opposed to swinging Skylights are to be considered. About that in addition, when the windscreen cover is raised horizontally largely avoided that rainfall inside the building can reach.

One horizontal lifting is technically easy realize four electric or pneumatic actuators, the in the corner areas of a rectangular window cover. at Using a bottom plate act below the disc cover the actuators on the lower disc, the lower disc with the disc cover connected by suitable fasteners are.

If below the window cover a fall protection, in particular in the form of a metal grid, is provided, will be personal injury in case of intentional or unintentional entry and breaching the disc cover avoided.

Thereby, that the opening in the roof provided with an inner frame is that with an upper section over the roof area protrudes, with the outside and the roof surface passing over the upper portion, a first sealant is provided, the risk of water damage by in the interior or in the insulation of the roof surface penetrating moisture avoided.

simultaneously can the inner frame for anchoring the skylight unit on the Roof be used, characterized in that the inner frame in the opening anchored in the roof and the skylight support ring at the top section the inner frame with fastening means, in particular by screws, is attached.

If the inner frame is made of fiber-reinforced plastic, the inner frame has sufficient stability at the same time low thermal conductivity. Preferably exists the inner frame made of glass fiber reinforced plastic.

additional or alternatively to the first sealant, the roof surface and bridging the outside of the skylight spreader a second sealing means are provided. This prevents that on the roof surface resting moisture, for example of precipitation, but also with snow loads, in the Interior of the building can penetrate. This should be the first and / or second sealing means a permanently elastic self-adhesive Be sealing gasket.

To further improve the luminous efficacy of the skylight unit, the inside of the upper are lichtaufsetzkranzes and possibly the inner frame provided with a light-reflecting surface layer. Hereinafter, an embodiment of the invention will be described in detail with reference to the accompanying drawings.

In this shows:

1 a skylight unit on a flat roof in a cross section.

In 1 is a skylight unit 1 on a flat roof 2 shown in a cross section. The flat roof 2 consists of a concrete floor or concrete slab 21 on which a thermal barrier coating 22 with a sealing foil resting thereon 23 rests. In this roof 2 is at the place provided for the skylight opening 20 provided in the desired dimension.

On the faces of the opening 20 In the roof 2 is an inner frame 4 , preferably made of glass fiber reinforced plastic attached. The inner frame 4 extends essentially over the entire strength of the roof 2 and is above, so on the weathering side, in the form of an upper section 41 over the through the sealing film 23 formed roof level over. Between the sealing foil 23 of the badger 2 and this upper section 41 of the inner frame 4 is a permanently elastic first sealant 24 , preferably glued in the form of a sealing sleeve, as in the sake of clarity in 1 is reproduced only on the right side in the cross-sectional view.

On the roof 2 , the opening 20 encircling, is a skylight spreader 10 intended. The skylight spreader 10 is composed of wreath elements 100 which have a substantially triangular cross-section. For rectangular and square openings 20 are at least four garland elements 100 one each along an extension of the opening 20 provided. The wreath elements 100 can be connected by miter cuts corner. Alternatively, the encircling Oberlichtaufsetzkranz 10 also from rectilinear and rectangular cut elements 100 and separate corner elements. In this case, in a rectangular Skylight Aufsetzkranz 10 to provide at least eight bridle lines.

The wreath element 100 is created as a hollow body of a fiber-reinforced plastic. The cavity is with a heat-insulating core 101 , For example, filled a polyurethane structural foam. Of course, other suitable insulation materials are conceivable as the core of the hollow body. Likewise, the garland may also be formed alone from a thermally insulating solid material. Also conceivable is a production as a one-piece skylight support ring in the appropriate size and shape.

However, the wreath element is preferred 100 as a glass fiber reinforced plastic element in the pultrusion process (pultrusion) produced endless and then provided with a PUR structural foam core. This sandwich element can then be cut on site or in a confectioning workshop to the desired length and to a complete skylight Aufsetzkranz 10 be joined together. Preferably, the joints are joined by means of suitable adhesive to the miter cuts or to the corner elements.

This skylight booth 10 will, the opening 20 circumferential and thus also the upper section 41 of the inner frame 4 backing up, on the roof 2 on the sealing foil 23 the roofing put on. The skylight support ring is preferred 10 on the roof 2 glued. Alternatively or additionally, the anchoring of the skylight installation ring 10 through the top section 41 guided screws 42 with the inner frame 4 and thus the roof 2 respectively.

That the skylight attachment wreath 10 forming garland element 100 with heat-insulating core 101 has a bottom 11 on top of that, on the roof 2 , especially on the sealing film 23 of the roof 2 rests. Furthermore, the garland element 100 a sloping inside 12 on, which is a funnel-shaped extension of the skylight unit 1 generated to the weathering side, as in 1 is shown with the slope N shown as an auxiliary line. The inclination N in this case has an angle α to the roof surface normal Z of 20 ° to 75 °, in particular 30 ° to 60 ° and in the embodiment shown here of 45 °. Furthermore, the insides 12 of the skylight installation wreath 10 as well as the inner frame 4 with a highly reflective surface layer 5 busy. This can be, for example, a highly reflective film or a corresponding coating or coating.

Next, each wreath element 100 an outside 13 on, in the illustrated embodiment, perpendicular to the bottom 11 and thus stands upright on the roof surface. Further, the upper "corner" of the substantially triangular cross-section of the ring element 100 in the form of a roof-parallel top 14 flattened. The sealing foil 23 and the outside 13 connecting is a second sealant 25 , also provided in the form of a permanently elastic cuff. This cuff is encircling the skylight rim 10 glued sealingly.

On the top 14 of the skylight installation wreath 10 is a disc cover 15 hung up. The window cover 15 is in a window frame 152 enclosed, which consists of a fully encircling L-profile. The downward pointing free leg of the L-profile of the window frame 152 covers the overlay of the window cover 15 on the top 14 of the skylight installation wreath 10 to reduce the direct weathering effect. Furthermore, between the disc cover 15 and top 14 a completely circumferential seal 151 intended.

In the skylight installation wreath 10 is in the area of the inside 12 , near the bottom 11 a recording 17 formed in the form of a section with a horizontal support surface on which a bottom plate 16 by means of an interposed circumferential seal 171 is tightly placed. Accordingly, forms between the disc cover 15 and the lower disk 16 an air chamber zone L, which forms a standing and highly insulating layer on both sides by the airtight seal.

To the skylight unit 1 To form openable, is an opening means 3 for lifting the window cover 15 and the lower disk 16 intended. The opening means 3 consists of a lifting device 30 , the inside of the inner frame 4 is arranged and at right-angled skylight units 1 Preferably at each corner, so four times is provided. To the 1 not to overload, is merely an opening means 3 shown. The actuator 31 the lifting device 30 allows lifting of the lower disk 16 , Between the lower pane 16 and the disc cover 15 are fasteners 32 provided, which preferably also at the four corner regions of the lower pane 16 and the disc cover 15 attack. The connecting elements are preferred 32 Made of a material of low heat conduction to avoid thermal bridges.

Upon actuation of the opening means 3 becomes the lifting device 30 , For example, an electric lifting device is activated, so that the actuator 31 extends and the lower disk 16 raises horizontally, so that a circumferential opening gap between the lower disc 16 and recording 17 or inside 12 of the skylight installation wreath 10 results. At the same time is about the fasteners 32 the window cover 15 also raised horizontally, so that here also results in a circumferential opening gap, which allows a free flow of air between the interior and the exterior.

Accordingly, such skylight units 1 that with opening means 3 are also used as smoke and heat exhaust ventilation (short: RWA) according to the legal requirements. Because the disc cover 15 and the lower disk 16 are lifted only horizonal, arise in the open state hardly additional wind loads on the raised disc elements, so that the mechanical design compared to the known opening systems can be formed considerably filigree with pivotable about a hinge axis skylights. This reduces the cost of the opening mechanism and leads to less shading by the filigree control elements. Because the opening means 3 alone on the inside of the window cover 15 attack, the opening means are not exposed to weathering and can therefore be produced more cheaply.

It should also be noted that by the horizontal raising of the window cover 15 and the lower disk 16 When opening the room door or an external window, a direct diagonal chimney effect is created in the room, which leads to a particularly rapid and effective ventilation above the RWA open Skylight unit creates a suction effect with vacuum effect.

In particular, by the formation of the skylight support ring with an inclined inclination N inside 12 is in conjunction with the over the entire funnel-shaped widened surface at the top 14 of the skylight installation wreath 10 through the large disc cover 15 provided a maximized light incidence for the skylight. The size of the opening 20 , mostly for constructive reasons, in particular to a sufficient strength of the roof panel 21 to obtain, has a limited size is, with the inventively designed skylight support ring 10 as far as possible supplied with daylight. In the case of sunbathing with the sun set lower, a significantly larger amount of light can be found in the roof under the roof compared to the previously known dome lights 2 get inside lying interior.

Due to the preferred embodiment of the inside 12 and also the inner frame 4 with a highly reflective coating 5 For example, a reflection foil, this is the over the large-area disc cover 15 incidental daylight unless it is directly through the opening 20 radiates into the interior, passed through possibly several reflections indirectly in the interior. Overall, therefore, a significantly higher light output at the same size of the opening 20 achieved in comparison to conventional skylight systems. Accordingly, the heat input, the elect During the heating period, the room heating can be supported. Excessive heating can be released to the environment as needed by the highly efficient ventilation system.

If the disc cover 15 is not itself sufficiently stable and / or if an additional fall protection is required, can below the disc cover 15 be provided in the air chamber gap L fall protection in the form of a metal grid. In this case, the fasteners engage 32 the opening means 3 free through the metal grid, so as not to restrict the openability of the skylight.

The horizontal liftability of the window cover 15 provides in particular with the L-shaped window frame 152 a good weathering protection, even during rainfall, as the downwardly directed leg of the L-shaped profile of the window frame 152 penetration of precipitation into the interior largely prevented.

1

Skylight unit

10

Oberlichtaufsetzkranz

100

A crown element, hollow body

101

Insulated Core, PUR structural foam

11

bottom

12

inside

13

outside

14

top

15

disc cover

151

poetry

152

window frame

16

lower pane

17

admission

171

poetry

2

top, roof

20

opening

21

concrete slab

22

thermal barrier

23

sealing film

24

first Sealant, cuff

25

second Sealant, cuff

3

opening means

30

lifting device

31

actuator

32

connecting element

4

inner frame

41

upper section

42

Fastening means, screw

5

highly reflective surface layer

α

angle

L

Air chamber zone

N

Tilt

Z

Roof surface normal

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 29519937 U1 [0002]
• - DE 19830324 A1 [0003]
• - DE 20305342 U1 [0004]
• - DE 29519937 [0006]

Claims (21)

Skylight unit ( 1 ) for flat roofs or slightly inclined roofs for installation in an opening ( 20 ) in the roof ( 2 ) with - one around the opening ( 20 ) encircling skylight ( 10 ), which has a bottom ( 11 ), on which the skylight ( 10 ) on the outside of the roof ( 2 ) around the opening ( 20 ), an inside ( 12 ), an outside ( 13 ) and a top ( 14 ), and - one on top ( 14 ) of the skylight ( 10 ) sealingly resting disc cover ( 15 ), characterized in that the inside ( 12 ) of the skylight ( 10 ) around the opening ( 20 ) is formed inclined so that the top of the skylight ( 10 ) formed light passage opening widened funnel-shaped upwards. Skylight unit according to claim 1, characterized in that the inclination (N) of the inner side ( 12 ) an angle (α) to the roof ( 2 ) defined surface normal (Z) of 20 ° to 75 °, in particular 30 ° to 60 °, particularly preferably 45 °. Skylight unit according to claim 1 or 2, characterized in that the skylight ( 10 ) according to the geometry of the opening ( 20 ) composite ring elements ( 100 ), in particular for rectangular openings ( 20 ) of four wreath elements ( 100 ). Skylight unit according to claim 3, characterized in that the ring elements ( 100 ) have substantially triangular cross-section. Skylight unit according to claim 3 or 4, characterized in that the ring elements ( 100 ) are self-supporting extruded profiles, preferably as a hollow body made of fiber-reinforced plastics. Skylight unit according to claim 5, characterized in that the hollow bodies ( 100 ) with a highly heat-insulating material ( 101 ), in particular PUR structural foam, are filled. Skylight unit according to one of claims 3 to 6, characterized in that the rim elements ( 100 ) have at their ends Miter cuts, where they around the opening ( 20 ) encircling skylight ( 10 ), in particular glued, are. Skylight unit according to one of claims 3 to 6, characterized in that corner elements are provided, which together with rectangular cut to length rim elements ( 100 ) to the opening ( 20 ) encircling skylight ( 10 ), in particular glued, are. Skylight unit according to one of the preceding claims, characterized in that below the disc cover ( 15 ) spaced to this a lower disk ( 16 ) is provided. Skylight unit according to claim 9, characterized in that the lower disc in a circumferential receptacle ( 17 ) in the skylight ( 10 ) near its bottom ( 11 ) rests. Skylight unit according to claim 10, characterized in that a circumferential seal ( 171 ) is provided in the receptacle. Skylight unit according to one of the preceding claims, characterized in that opening means ( 3 ) for opening the window cover ( 15 ) possibly together with the lower pane ( 16 ) are provided. Skylight unit according to claim 12, characterized in that the opening means ( 3 ) a lifting device ( 30 ) having the disc cover ( 15 ) and possibly the lower pane ( 16 ) raises substantially horizontally. Skylight unit according to claim 13, characterized in that the lifting device ( 30 ) four electric or pneumatic actuators ( 31 ) located in the corners of a rectangular pane cover ( 15 ). Skylight unit according to one of the preceding claims, characterized in that below the disc cover ( 15 ) a fall protection, in particular in the form of a metal grid, is provided. Skylight unit according to one of the preceding claims, characterized in that the opening ( 20 ) In the roof ( 2 ) with an inner frame ( 4 ) provided with an upper section ( 41 ) projects beyond the roof surface, wherein on the outside the roof surface and the upper section ( 41 ) passing a first sealant ( 24 ) is provided. Skylight unit according to claim 16, characterized in that the inner frame ( 4 ) in the opening ( 20 ) In the roof ( 2 ) and the skylight ( 10 ) at the upper section ( 41 ) of the inner frame ( 4 ) with fastening means ( 42 ), in particular by screws, is attached. Skylight unit according to claim 16 or 17, characterized in that the inner frame ( 4 ) consists of fiber-reinforced plastic. Skylight unit according to one of the preceding claims, characterized in that the Roof surface and the outside ( 13 ) of the skylight ( 10 ) bridging a second sealant ( 25 ) is provided. Skylight unit according to one of claims 16 to 19, characterized in that the first and / or second sealing means ( 24 . 25 ) is a permanently elastic self-adhesive gasket. Skylight unit according to one of the preceding claims, characterized in that the inner side ( 12 ) of the skylight ( 10 ) and possibly the inner frame ( 4 ) with a light-reflecting surface layer ( 5 ) are provided.