EP2694751A2

EP2694751A2 - Photovoltaic in-roof system

Info

Publication number: EP2694751A2
Application number: EP12728945.2A
Authority: EP
Inventors: Wolfgang Gerdemann
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-06
Filing date: 2012-04-04
Publication date: 2014-02-12
Also published as: DE112012001603A5; WO2012136194A2; DE102011016262A1; WO2012136194A3

Abstract

In the case of a photovoltaic in-roof system, having a multiplicity of photovoltaic thin-film modules (13-16) which very substantially and directly form a roof surface and are arranged in rows (9, 10, 19, 20), UK support purlins (4) are arranged under horizontally running extensions or between horizontally running extensions (18) of rows (19, 20) of thin-film modules (13, 16; 14, 15) and, at a butt joint (6) between two rows (9, 10) of thin-film modules (13, 14; 16, 15) extending from the eaves (7) to the ridge (8), rafter-like main ribs (5) supporting the thin-film modules (13-16) are arranged in a supporting manner on the UK support purlins, and the extensions (18) and the butt joints (6) are designed in a water-conducting manner.

Description

Photovoltaic in-roof Description:

The invention relates to a photovoltaic roof, having a large number of a roof surface as far as possible and

immediately forming, arranged in rows

Photovoltaic thin-film modules.

Photovoltaic systems now supply quite a significant proportion of renewable energy. On sloping roof surfaces are the stromladfernden

Thin-film modules usually in one on roof tiles

mounted frame. However, since the dimensions of the thin film modules dictate a grid, the appearance of roofs provided with thin film modules is not very satisfactory due to recesses for fireplaces, skylights or the like.

Furthermore, it appears in times of dwindling

Resources are not suitable to cover a roof covered with roof tiles again by water-conducting thin-film modules.

Against this technical background, the invention has the object to provide a photovoltaic in-roof system for

To provide that allows the complete training of roof areas, without compromising on conventional

Covering work with bricks, sheets or the like must be resorted to. In addition, that should

Photovoltaic in-roof resources must be carefully designed to a high degree environmentally friendly.

The technical problem is solved with a

Photovoltaic in-roof, having a variety of one

Confirm and sko Roof surface largely and immediately forming, arranged in rows photovoltaic thin-film modules, according to claim 1 by the measures that are arranged under approaches or between horizontally extending approaches of rows of thin film modules UK-Trägerpfetten and that under a shock two from the eaves toward the First extending rows of thin film modules have rafter-type main ribs supporting the thin film modules

UK support purlins are arranged supporting and that the lugs and bumps are designed to carry water.

The photovoltaic roof of the invention has a

Variety of advantages, in particular the abandonment of a custom roofing with tiles, Einblechungen or the like. Rather, the thin-film modules extend from the eaves to the ridge. It is likewise provided that rows of thin-film modules extend, for example, from verge to verge. Consequently, by the

waterproof interconnected thin-film modules, the precipitation-preventing and dissipating roof surface

educated. Accordingly, the substructure supporting the thin-film modules must be provided.

On a conventional roof construction, with rafters,

Insulation and overlying moisture barrier, usually a foil or a comparable skin, are over the entire roof width extending under or between the approaches such as overlaps or shocks

UK Carrier purlins set horizontally aligned. On these, the main ribs extend from the eaves to the ridge. In this case, the predetermined by the dimensions of the modules grid is picked up, the main ribs are arranged under a collision of two from the eaves towards the ridge extending rows of thin-film modules.

With appropriate width of the thin-film modules can be provided that between two such main ribs Intermediate rib is seconded for additional support of the thin-film modules.

These structural measures allow the

Photovoltaic in-roof according to the invention for care and maintenance accessible form.

It is of particular advantage that this

Substructure can be easily applied both in a renovation of a roof and in a new building.

In addition, the substructure of the

Photovoltaic Indachs invention preferred

environment-friendly, for example, from a renewable resource such as wood, for example, be Robinie.

The exact adherence of the dimensions of the

Thin-film modules predetermined grid in the laying of the main and intermediate ribs on the UK-Trägerpfetten can easily by predetermined entrances,

preferably by a Verblattung be sure.

However, the given by the dimensions of the thin-film modules grid due to skylights, chimneys or slanted roof slopes not continuous

are respected, corresponding recesses are in the

To provide substructure, which can be closed by resizable, eg sawable or cuttable, the thin film modules optically corresponding dummy modules, dummy's. This is a total of a roof tileless training of

Photovoltaic Indaches guaranteed according to the invention.

In a constructive embodiment of the photovoltaic roof according to the invention can be provided that the ridge-side module edges of the uppermost thin-film modules are spaced from each other and that between two UK ridge purlins a Firstrinne is arranged. Such a Firstrinne can be made in a conventional manner from a titanium zinc sheet or a film such as a PE film, which can be held here advantageously directly from the UK ridge purlins.

Such an open ridge allows in a simple way the

Ventilation of the thin-film modules. In addition, it provides access to, for example, a wiring or an implementation of the same in the house interior. The Firstrinne prevents the flow of rain on the

Moisture barrier to a UK ridge purlin, where the precipitation would accumulate. The in the Firstrinne

collected precipitates are preferably discharged from the firewater to the eaves through drainage channels. This prevents moisture from accumulating on the ridge of the ridge of the fens, however, regular recesses must be provided for the drainage channels in the ridge of the ridge purlin and the submarine rumps. Alternatively or additionally, it can be provided that the UK ridge purlin, a UK carrier purlin and / or the

Eaves bearing on their first-facing sides are each provided with a chamfer. Is the

UK ridge pelts, a UK carrier purlin and / or the

Eaves support in the moisture barrier of the

Roof substructure included, with sufficient slope, the water can then flow over this bevel and thus on the UK ridge purlin, a UK-carrier purlin and / or the eaves support. Thus, it is provided in particular that the eaves bearing is provided on its side facing the ridge with a chamfer and that on the other side of the eaves support a gutter is arranged, so that the water can flow directly through the eaves support in the gutter ,

In a first variant of the photovoltaic roof according to the invention, it is further provided that a joint and / or an approach formed as a joint with arranged underneath UK-Trägerpfette is closed by a H-profile that connects adjacent edged thin-film modules. This is the top of all thin film modules of the

Photovoltaic Indaches according to the invention in a common plane.

The H-profiles, preferably made of a rubber or a

Elastomer, while the thin-film modules enclose sealing over the edge. It is expedient if the free top of the H-profile is convex, so that a precipitate can run off easily. The resting on the main rib underside of the H-profile, however, is executed plan.

Grasping the thin-film modules in H-sections also has the advantage that at the corner points of the thin-film modules, the H-profiles can be screwed to a main rib, in particular in a mechanically very stable region of the substructure supporting the thin-film modules, if there are main ribs and U-profiles. Cross carrot purlins.

Alternatively it can be provided that a shock and / or designed as a shock approach with arranged underneath

UK-Trägerpfette is closed by a seal such as a silicone joint, the center of a preferred elastic filling tape on a main rib or a

Supported UK carrier purlin. It is then preferably the main rib or the UK-Trägerpfette be glued to thin-film modules, which is especially intended for a spaced bonding the underside of the edge of a thin film module over its entire length on the top of the main rib or over its entire support width on a UK Carrier purse.

Does this adhesive technology a high quality

1-component silicone adhesive such as used for glass facades, not only the wind and snow loads are safely intercepted, but is the

Photovoltaic in-roof according to the invention, moreover, theft-proof. In a preferred variant of the photovoltaic roof according to the invention it is provided that the approach is formed by an overlap, which is predetermined by a correspondingly dimensioned toothing in the top of the main rib. Prescribed in terms of production, as it were

kit-like, is thus a very accurate installation of

Thin-film modules. Accuracy can be further enhanced if it is designed for lamination with the UK carrier purlins arranged between or under the overlaps.

Are the UK carrier purlins between the overlaps

arranged, so these can be done in a conventional manner

be formed. A sealing of the overlapping modules is done by gluing, which is sufficient for larger roof pitches. If, for example, for the sake of stability, under the overlaps of UK carrier purlins, it has proved expedient to provide these with a corner recess, so that the overlapping ones are provided

Support photovoltaic thin-film modules each on one end face. A sealing bonding of the modules on such a UK-Trägerpfette is carried out according to the gluing on a main rib. The essence of the invention will be explained in more detail with reference to the drawing, in which only embodiments are shown schematically and not to scale. In the drawing shows: a gable-side view of a first

Embodiment of a photovoltaic Indachs according to the invention, an enlarged view of the ridge, the arrangement of main ribs and intermediate ribs between a UK-Trägerpfette and

Thin-film modules, Fig. 4: a plan view arranged in rows

Thin-film modules, Fig. 5: gable end of the eaves,

Fig. 6: the attachment of the thin-film modules

Main ribs and intermediate ribs, FIG. 7: the formation of a verge,

8 shows a holder for a snow grille or the like,

9 is a view of the holder according to arrow IX in Figure 8,

Fig. 10: the arrangement of main ribs and intermediate ribs between a UK-Trägerpfette and

Thin-film modules of a second

Embodiment of a photovoltaic Indachs according to the invention,

Fig. 11: a plan view arranged in rows

Thin-film modules, Fig. 12: a gable-side view of a second

Embodiment,

Fig. 13: in detail, the overlap of thin-film modules, Fig. 14: the determination of thin-film modules at main and

Intercostal,

Fig. 15: the formation of a verge, Fig. 16: a gable-side view of another

Embodiment, 17 shows an embodiment with offset in height UK Trägepfetten the two roof halves,

FIG. 18: another ridge-side conclusion,

Fig. 19: an embodiment with under overlaps

arranged UK-Trägerpfetten and

FIG. 20: an enlarged view of the UK carrier purlin according to FIG. Fig. 19.

With reference to the figures 1 to 9, a first

Embodiment of a pan-less photovoltaic Indaches explained according to the invention.

Figure 1 shows a gable-side view of a conventional roof substructure 1 with rafters and thermal insulation, resting on Hauptpfetten 2 and the upper side of a

Moisture barrier, here in the form of a water-impermeable PE film 3, completed.

On the substructure 1 are horizontally extending a UK ridge purlin 27, a eaves support 33 and

UK-Trägerpfetten 4 set, carry the rafter-like main ribs 5. The arrangement of the main ribs 5 is such that they are arranged under a joint 6 of two of the eaves 7 extending to the ridge 8 rows 9,10 of thin-film modules 11-16, see Figures 3 and 4. The UK-Trägerpfetten 4 extend below horizontal, trained in this embodiment as a joint approaches 17,18 two superimposed rows 19,20 of

Thin film modules 14, 15; 13.16.

Between the main ribs 5 intermediate ribs

Need to be provided, in addition to the

Support thin-film modules 11-16. FIG. 2 shows that the ridge 8 is designed to be open, since the ridge-side module edges 21, 22 of the uppermost ones

Thin film modules 14,23, the main ribs 5,24 above, are spaced from each other. This open design allows easy ventilation of the thin-film modules, wherein the end faces of the main ribs 5.24 arranged ventilation grille 25,26 the ingress of coarse dirt or birds

prevent. On the topmost UK ridge purlins 27,28 is also a

Fall protection 29 is set.

From the module edges 21,22 of the thin-film modules 14,23 dripping water and through the gap between the

Module edges 21,22 penetrating precipitation is in a located between the purlins Firstrinne 30 from

Titanium sheet or a PE film collected. The rainfall collected in the Firstrinne 30 is discharged towards the eaves 7 via drainage channels 31,32. For this purpose, the UK-Trägerpfetten 4 and the UK ridge purlins 27,28 with

corresponding recesses for the drainage channels 31,32 to provide.

A guided through the substructure 1 Sanitärentlüftung 53 or the like, ending below the thin-film module 14 is merely indicated.

The eaves-side formation of the photovoltaic roof according to the invention is shown in FIG. 5. In front of a lower one

Eaves bearing 33, which concludes with the substructure 1 and is included in the moisture barrier through the film 3, the drainage channel 31 ends. As a result flows on the film 3, the discharged from the Firstrinne 30 precipitation on a ridge-side slope 34 on the eaves support 33 and from there directly into a fixed to the eaves support 33 gutter 35. Here, the bevel 34 is to be formed such that a sufficient gradient of more as 2 ° from a horizontal for a safe

Drainage of the precipitate is given.

If a snow guards, lightning protection device or the like provided, can at the front sides of the ribs

5 holder 36 are fixed, compare Figures 8 and 9. The holder 36 has for this purpose a base plate 37 with holes for a screw connection to the ribs 5. In this embodiment of a photovoltaic Indachs the thin-film modules lie 14,15 in a plane, see Figure 6. The running of the eaves 7 to First 8 shocks

6 and the horizontally extending, here jerky lugs 18 are water-carrying by H-profiles 38,39

closed, wherein the thin-film modules 14,15 are bordered by their edges 40,41.

On the upper side, the H-profile is designed to be convex for a good water outlet, while it is fixed on the underside with a flat base plate 42 over the entire surface resting on the main rib 5. The H-profiles 38, 39 are fastened with screws 43 in the corner points 44 of the thin-film modules

13-16. First or eaves side such a screw 45 is offset according to a supernatant or the like.

FIG. 6 further shows the overlapping of an intermediate rib 92 with a U-profile 54, on which the thin-film module 15 can simply rest, optionally also by means of a

Bonding fixed.

Both the H-profiles 38,39 and the U-profiles 54 should have rubber-elastic properties, thereby eliminating the need for further measures for a seal in the H-profiles 38,39. Roofs should be completely formed with the photovoltaic in-roof system according to the invention. For the formation of a Ortgangs 46 gem. Fig. 7 is an above

explained H-profile 47 by means of screws 48 to a

Main rib 49 set. The H-profile 47 holds on one side a thin-film module 50 and opposite a dormant dummy module 51, a dummy, the

Main rib 49 and the base plate 52 of the H-profile 47 finally covered, whereby a clean completion of the roof is done.

Fig. 7 shows an example of the formation of a

However, such a connection to a support or the like can be done accordingly.

Due to the dimensions of the thin-film modules, a grid according to FIG. 4 is predetermined, which can not be safely maintained over an entire roof area due to cutouts for roof windows, chimneys or the like. In the

Size-adjustable dummy modules 51 or dummy's, which correspond in their appearance to the thin-film modules, then allow any connection to roof windows, chimneys or the like. With reference to the figures 10 to 15, a second

Embodiment of a photovoltaic in-roof system further explained.

FIGS. 10 and 11 again show the structural design of thin-film modules 55-59 on main ribs 60-63,

in turn, sitting on UK-Trägerpfetten 64. Between the main ribs 60-63 two intermediate ribs 65,66 are provided in this embodiment. The main ribs 61-63 are under impacts 67-69 of the

Eaves 70 are arranged toward the first 71 extending rows 72-74 of thin film modules, while the

UK Carrier Piles 64 below the overlapping, horizontally extending lugs 75 of the rows 93,94 of

Thin-film modules extend.

The overlapping projection 75 is formed by correspondingly dimensioned teeth 76 in the upper side 77 of the main rib 61

ensured, compare Figures 12 and 13. Accordingly, the other main ribs and intermediate ribs are to be provided with such teeth, for example. By milling or by feeding.

The projection 75 in the form of an overlap can, as shown in the exemplary embodiment according to FIG. 13, be water-sealed by a bond 78, wherein a fixing or adhesive tape 79 defines the distance between the upper thin-film module 55 and the lower thin-film module 59.

However, with sufficient roof pitch, such bonding 78 may be omitted.

The connection between the thin-film modules 55,56 and main ribs 61 and intermediate ribs 65 is carried out by a theft-proof, wind and snow loads sufficiently adhesive bonding, see Figure 14.

Two bonds 80, 81 are provided over the entire length of the adjacent modules 55, 56 on the main rib 61 and close fixing or adhesive tapes 82, 83 on the outer edge with the main rib 61 and provide an exact measure of the spacing for the bonds 80, 81 ,

Below the joint 67 is arranged in a flexible elastic filling belt 84 which seals the open shock 67 underside so far that the shock 67 water leading with a

Seal 85, preferably made of a silicone, can be closed. An adhesion 95 with the thin-film module 55 takes place only in sections on the intermediate rib 66, for example every 15 cm over a length of 5 cm. In the event of a disruption of the grid of thin film modules 55-59, instead of a thin film module 56, a size-adjustable dummy module may easily be used for connection to a fireplace, skylight, or the like. A verge 86 can be formed in accordance with Figure 15 in a simple manner by a projection 87 of the thin-film module 55, which protrudes freely of the main rib 60 right. Two bonds 88,89 in conjunction with two fixing or

Adhesive tapes 90,91 over each the entire length of a

Thin-film module 55 sufficiently deposit this thin-film module 55 on the roof edge-side main rib 60.

Figure 16 shows an embodiment with a single

First purlin 100. By type of counter battens

UK-Trägerpfetten 101 mounted on a battens 102. Provided with a toothing 103 main and possibly intermediate ribs 104 are with the UK-Trägerpfetten 101st

defaced and thus accurately positioned.

By the teeth 103 overlap the

Thin-film modules 104 and 104 are bonded to one another and to the main and intermediate ribs 104, as explained above.

/

In this embodiment, the UK-Trägerpfetten 101 with respect to the gable-side view between two bumps 106,107 of the thin-film modules 105, 108 are arranged. The ridge-side thin-film modules 105 protrude the main and intermediate ribs 104, and the free ends of the thin-film modules 105 are supported on a roof ridge 109 and bonded thereto. Depending on the design of the roof ridge 109, water-tight or latticed for a rear ventilation of the thin-film modules 105, 108, two channels U-shaped in a cross-section 110 can still be used for the removal of water

be provided, which are supported on the end faces of the main and intermediate ribs 104.

In the embodiment gem. Figure 17 corresponds to the arrangement of UK-Trägerpfetten 112,113 and main ribs 114, 115 and, if necessary, intermediate ribs the Ausführungsbeipie explained above with the difference that the

UK-Trägerpfetten 114,115 offset in height are arranged to each other and thus the teeth 116,117 of the main ribs 114,115. The offset is such that the free end 118 of the ridge-side thin-film module 119 is the

Covered at the end face of the main rib 115 and approximately in the plane of the on the main rib 115 ridge-side thin-film module 120 closes.

The free ends 118, 121 of the thin-film modules 119, 120 projecting from the end faces of the main ribs 114, 115 are interconnected by a substantially U-shaped profile 122

connected. If the U-profile 122 is permeable to air and water, a substantially U-shaped channel 123, arranged on the front side of the main rib 114, is expedient, whose drainage 124 is merely indicated.

In the embodiment gem. FIG. 18 are the

UK-Trägerpfetten 126,127 again arranged at the same height and thus also the teeth 128,129 of the main ribs 130, 131 and, if necessary. Provided intermediate ribs. The main ribs 130,131, if necessary. Also intermediate ribs, run on the ridge side under the enclosure of a stator 132 together, with a

Gable roof 133 is provided. The gable roof 133 is located

above the ridge-side thin-film profiles 134,135 and overlaps with these, so that a water inlet is not to get. The gap between the thin film profiles 134, 135 and the gabled roof 133 is closed by grids 136 so that birds, leaves or the like can not penetrate. Figure 19 shows a ridge-side conclusion, in which a gabled roof 138 of the free ends 139,140 of the

End faces of the main ribs 141,142 above

Thin-film modules 143,144 is overlapped. Here, the gabled roof 138 may be lattice-like, to allow ventilation of the thin-film modules 143,144 and then a gutter 145 for the discharge of rainwater or the like and a suitably formed sealing film 146 should be provided. In the embodiment gem. FIG. 19 is the toothing 147, 148 of the main ribs 141, 142 at the same height. Further, the overlap 149, 150 of the thin-film modules 143, 151, and 144, 152, respectively, of one UK carrier purlin 153, 154, respectively

Underrun, see also Figure 20.

For this purpose, the UK-Trägerpfette 153 has a Eckausnehmung 155, so that the end face 156 of the UK-Trägerpfette 153 and the end face 157 of the Eckausnehmung 155 engages each one of the overlapping thin-film modules 143,155.

Gluing the thin-film modules 143,155 with the

End faces 156,157 or with each other in the manner explained by means of fixing straps and adhesive. Also in this embodiment can be by

Height offset of the UK-Trägerpfetten 153,154 realize a wide variety of deadlines and eaves.

By the photovoltaic roof of the invention is

Architects and builders a modern and expressive design possibility of entire roof landscapes

Which, moreover, deals with the available resources extremely sustainably. The photovoltaic in-roof according to the invention is

- the green solution in photovoltaic for roof and roof

Facade systems,

- Relief of the environment by C0 ₂ saving

- Substructure of the natural product wood such as Robinie or equivalent

- Substructure can be applied immediately to the existing rafters or purlins during new construction and renovation,

- Arrangement of the horizontal grid system of the main bearing (outside) and intermediate support (inside) with the vertical grid system by dimensionally milled the

Substructure with each other,

internal arrangement of the fixing or adhesive tapes for support and support of the thin-film modules with the substructure,

- Circumferential outer bonding and sealing of the

Thin-film modules with a silicone adhesive,

- Mount, connections and connections to rising

Components by dimensionally prefabricated dummy modules, dummies,

- Thus complete training of a water-bearing layer from the ridge to the eaves and facades from the pedestal to the attic or eaves section

- Training a ridge and valley gutter made of PE film or titanium zinc sheet according to the appropriate roof shape for

Drainage and optimal ventilation of the modules,

- theft-proof by the adhesive technique,

- walkable for care and maintenance,

- modern and expressive architectural design.

Claims

Photovoltaic in-roof, comprising a plurality of a roof surface largely and directly forming, arranged in rows photovoltaic thin-film modules, characterized in that under horizontal

running approaches or between horizontal

extending lugs (18) of rows (19, 20) of

Thin-film modules (13, 16, 14, 15) are arranged UK-Trägerpfetten (4) and that under a shock (6) of two of the eaves (7) extending towards the ridge (8)

Rows (9, 10) of thin-film modules (13, 14; 16, 15) rafter-type main ribs (5) carrying the thin-film modules (13-16) are supported on the UK carrier purlins (4) and that the lugs (18) and the joints (6) are designed to carry water.

Photovoltaic roof according to claim 1, characterized

in that a joint (6) and / or a shoulder (18) designed as a joint are arranged underneath

UK-Trägerpfette (4) by an H-profile (38) is closed, the adjacent thin-film modules (14,15) bordered bordered.

Photovoltaic in-roof according to claim 2, characterized

characterized in that at vertices (44) of the

Thin-film modules (13-16), the H-profile (38) with a main rib (5) is screwed.

Photovoltaic roof according to claim 1, characterized

in that a joint (67) and / or a shoulder formed as a joint are arranged underneath

UK-Trägerpfette by a seal (85) is closed, the center of a filling belt (84) on a 2

Main rib (61) and / or a UK-Trägerpfette supported.

Photovoltaic roof according to claim 1, characterized

characterized in that the projection is formed by an overlap (75) formed by a correspondingly dimensioned toothing (76) in the upper side (77) of the

Main rib (61) is predetermined.

Photovoltaic in-roof according to claim 5, characterized

characterized in that an under one overlap (149) arranged UK-Trägerpfette (153) with a Eckausnehmung

(155), on whose end faces (156, 157) the overlapping photovoltaic thin-film modules are provided

(143,151) each support.

Photovoltaic in-roof after one or more of the

preceding claims, characterized in that between two main ribs (5,5) an intermediate rib (92) is arranged.

Photovoltaic in-roof after one or more of the

preceding claims, characterized in that main ribs (101), intermediate ribs and UK-Trägerpfetten (104) are leafled.

Photovoltaic in-roof after one or more of the

preceding claims, characterized in that a main rib (61) and / or a UK-Trägerpfette with thin-film modules (55,56) is bonded / are.

Photovoltaic in-roof after one or more of the

preceding claims, characterized by size-adaptable dummy modules (51).