Solar roof system

Abstract

The invention relates to a solar roof system (2) comprising: a roof surface (18) having solar panels (20); at least two base support elements (4) for retaining the roof surface (18), wherein each base support element (4) has a main support (6) which is formed by a closed hollow profile which is bent in a bending region (8) by less than 90 degrees and more than 60 degrees, and which has at least one straight first support section (10) connected to the bending region (8), wherein the first support section (10) serves to retain the roof surface (18); at least three framework elements (12, 14, 16, 42) by means of which the first support section (10) is secured down on a bend outer side (17) of the bending region (8) in the intended installed state of the solar roof system (2); and at least two mount adapters (24) assigned to the base support elements (4) for securing the base support elements (4) to a mount (26).

Claims

1. A solar roof system, having a roof surface comprising a predetermined number of solar panels, and at least two base support elements for retaining the roof surface, wherein each base support element has a main support which is formed from a closed hollow profile, which is bent within a bending plane in a bending region by less than 90 degrees and more than 60 degrees, and which has at least one straight support leg adjoining the bending region and on which the roof surface is borne, characterised in that the solar roof system further has: at least three framework elements by means of which the support leg is secured on a bend outer side of the bending region in the intended installed state of the solar roof system, at least two foundation adapters associated with the base support elements for fastening the base support elements to a foundation, and a support and sealing rail for retaining and for sealingly connecting the solar panels, said solar panels having edges which lie next to one another in parallel to the bending plane, and for guiding connection cables of the solar panels, wherein the solar roof system further comprises a sealing system with an elongated elastomer sealing profile for sealing edges of said solar panels against an attachment part, wherein the sealing system has two sealing legs which extend transversely with respect to a longitudinal direction of the elastomer sealing profile and are integrally connected to one another via a hinge section, which are arranged essentially in parallel to one another in an intended mounted state in order to embrace edges of the solar panels and abut against solar panels on top and bottom sides, and which are standing at least V-shaped with respect to one another in a pre-mounted state, wherein a labyrinth seal with at least one trough is formed on at least one of said two sealing legs on a bearing side towards the solar panels, wherein the labyrinth seal is formed by two sealing lips projecting obliquely, in the pre-mounted state, from the bearing side of the sealing legs, and by troughs formed these in the bearing side, wherein the sealing lips and the troughs being dimensioned in such a way that, in the intended mounted state, the sealing lips lie flush with one another and flat on the solar panels and span a major part of the corresponding trough in a web-like manner.

2. The solar roof system according to claim 1, characterised in that it has a transverse support for coupling of two respective base support elements of the at least two base support elements installed in parallel transversely to the bending plane of the respective main support.

3. The solar roof system according to claim 1, characterised in that one of the framework elements is arranged in parallel to the support leg and forms a support for the roof surface, wherein this framework element rests on the support leg and overhangs the bending region.

4. The solar roof system according to claim 1, characterised in that each base support element is formed from aluminium and has a total weight of 40 to 70 kg.

5. The solar roof system according to claim 1, characterised in that the main support has a bending radius of at least 2 metres in the bending region.

6. The solar roof system according to claim 1, characterised in that each base support element has a span width of less than 6 metres.

7. The solar roof system according to claim 1, characterised in that each base support element has a ridge height of at least 3 metres and an eaves height of at least 2.5 metres.

8. The solar roof system according to claim 1, characterised in that it comprises at least two ground screws of about 2 metres in length for forming the foundation for the at least two base support elements.

9. The solar roof system according to claim 1, characterised in that each of the at least two foundation adapters has a base plate for fastening to the foundation and a standpipe which is connected thereto and onto which, in the intended installed state of the solar roof system, a ground end of the main support facing away from the respective support leg is slipped and fixed.

10. The solar roof system according to claim 1, characterised in that the at least two base support elements are arranged in parallel to one another with the bending plane of the respective main supports, each of the support legs is arranged at an angle of at most 30 degrees to a horizontal line, and the respective main support having a ground end which is fastened to a foundation by means of one of the foundation adapters.

11. The solar roof system according to claim 1, characterised in that the at least two base support elements comprise at least four base support elements and that the solar roof system comprises two roof surfaces, wherein two of said at least four base support elements each are coupled to one another with their support legs pointing away from one another and by means of at least two of the at least three framework elements each, and wherein two of the at least four base support elements each support one of the roof surfaces each.

12. The solar roof system according to claim 1, characterised in that said solar roof system comprises at least four of said base support elements and two of said roof surfaces, wherein two of the four base support elements each are supported against one another with the respective support legs pointing towards one another at their free ends, and wherein two base support elements each support one of the roof surfaces each.

13. The solar roof system according to claim 12, characterised in that each of the support legs is secured to the ground by means of the at least three framework elements.

14. The solar roof system according to claim 1, characterised in that the support and sealing rail has a drip and guide tub running in a longitudinal direction, which serves for draining off dripping water and for concealedly guiding the connection cables.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following, example embodiments of the invention are illustrated in more detail by means of a drawing. Shown to scale are:

(2) FIG. 1 a schematic perspective view of a design of the solar roof system in the form of a carport,

(3) FIG. 2, 3 in a schematic side view, the solar roof system, in a partially installed state, in particular without roof surfaces, each in a different arrangement,

(4) FIG. 4 in a schematic side view, a foundation adapter of the solar roof system,

(5) FIG. 5 in a schematic sectional view, a seal for sealing solar panels of the solar roof system to one another,

(6) FIG. 6 in a schematic sectional view, a support and sealing rail for sealing and retaining the solar panels, and

(7) FIG. 7 in a schematic cross-sectional view, an elastomer sealing profile of a sealing system of the solar roof system.

(8) Parts corresponding to one another are always marked with the same reference signs in all figures.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(9) In FIG. 1, the solar roof system 2 which forms a carport is schematically depicted. The solar roof system 2 is mounted as a construction kit described in more detail below. In the example embodiment shown, the solar roof system 2 comprises six base support elements 4. These in turn have a main support 6 formed from a round aluminium tube, i.e. a closed hollow profile. The main support 6 is bent by an angle of 100 degrees in a bending region 8 (see FIG. 2). A support leg 10 of the main support 6 adjoining the bending region 8 is thus deflected by 80 degrees from a vertical line 11 in the depicted installation state. The base support elements 4 also have three framework elements 12, 14 and 16, which serve on a bend outer side 17 of the bending region 8 to specifically secure the support leg 10. The framework element 12 runs in parallel to the support leg 10 over its entire length and specifically overhangs the bend outer side 17 of the bending region 8. The framework element 12 forms a support for a roof surface 18 of the solar roof system 1. The roof surface 18 comprises fifteen solar panels 20 in the example embodiment shown. The respective base support elements 4 are each placed with a base end 22 of the respective main support 6 on a foundation adapter 24 (shown in more detail in FIG. 4) and connected to the latter. The foundation adapter 24 is in turn connected to a foundation 26. In the example embodiment shown in FIGS. 1-3, the foundation 26 is formed by a conventional concrete foundation.

(10) In an example embodiment not shown in more detail, the foundation 26 is formed by a ground screw screwed into the ground, the surface of which is indicated by a level line 27 exemplary of the ground level.

(11) In the example embodiment depicted in FIG. 1, the solar roof system 2 specifically has two roof surfaces 18, each being supported by three base support elements 4. The two (first and second) roof surfaces 18 herein form a butterfly roof. I.e., the two roof surfaces 18 meet at the so-called eaves. Thus, three base support elements 4 each are arranged with their support legs 10 pointing in the same direction and pointing away from the support legs 10 of the other three base support elements 4. The ridge of both roof surfaces 18 is thus located on an outer or front side of the base support elements 4 and thus of the solar roof system 1. On the bend outer side 17 of the main supports 6 of the respective base support elements 4, the framework elements 12, 14 and 16 of the base support elements 4, which are each arranged against one another (on their rears), are coupled to one another. As a result, in particular the respective support leg 10 of these two base support elements 4 is secured against the respective other base support element 4. The framework elements 12, 14 and 16 of these two base support elements 4 together form multiple “force triangles”. In FIG. 2, the solar roof system 2 is depicted without both roof surfaces 18.

(12) For further stabilisation of the solar roof system 2, the base support elements 4 adjacent to one another transversely to the bending plane of the respective main support 6 are braced together by means of two transverse supports 30.

(13) For retaining the respective roof surface 18, the solar roof system 2 has multiple mounting rails 31 (also referred to as “mounting profile” or “support rail”) fastened to the framework elements 12 and running transversely to them. The individual solar panels 20 are retained together in the direction of the framework elements 12 by means of the support and sealing rails 32 depicted in FIG. 6 and fastened to the mounting rails 31. Transverse to the direction of the framework elements 12, the individual solar panels 20 are sealed against one another with the interposition of a rubber seal 33 depicted in more detail in FIG. 5.

(14) In order to prevent rainwater from dripping down, in particular in the range of the eaves, the solar roof system 2 has a rain gutter 34 which is supported below both roof surfaces 18, running transversely to the direction of the framework elements 12, by the framework elements 12 and 14.

(15) In FIG. 3, an alternative example embodiment of the solar roof system 2 is depicted. For simplification, the roof surfaces 18 and the mounting rails 31 are not depicted here. In this example embodiment, the base support elements 4 are positioned with their support legs 10 pointing towards one another. I.e., the base support elements 4 meet with their respective ridge ends, so that the roof surfaces 18 supported by the mounting rails 12 form a saddle roof. In this case, the solar roof system 2 comprises a ridge seal 40. For purposes of securing, the base support elements 4 also each have a fourth framework element 42 which is arranged along the vertical line 11 and serves for securing the support leg 10 towards the ground by means of the framework elements 12, 14 and 16. In addition, the solar roof system 2 also has a tension strut 44 that connects the two base support elements 4 which are installed opposite to one another and meet at their respective ridge end. Two base support elements 4 each installed in parallel next to one another are also connected to one another here by means of the transverse support 30.

(16) The fourth framework element 42 in this example embodiment is formed as a U-profile and also serves as a mounting profile for an eaves-side wall or the like.

(17) In both example embodiments according to FIGS. 2 and 4, the base supports 4 have a span width of 5 metres, so that a total span width W of the solar roof system 2 is 10 metres. A distance between the base support elements 4 arranged in parallel (i.e. seen transversely to the support leg 10) is 2.5 metres in the present example embodiment.

(18) In an optional example embodiment, the distance between the base support elements 4 arranged in parallel is three metres.

(19) In FIG. 4, the foundation adapter 24 is depicted in more detail. This has a base plate 50 which serves for connecting to a head of the ground screw described above. In addition, the foundation adapter 24 has a standpipe 52, which is arranged normal to the base plate 50 and welded to it. Specifically, the standpipe 52 has a length of 500 millimetres. Accordingly, each main support 6 is also provided in the region of the base end 22 with a straight second (end-side) support leg arranged there. In the intended mounting state according to one of the FIGS. 1-3, the respective ground end 22 of the main support 6 is slipped onto the standpipe 52 and thus covers it.

(20) For mounting, specifically for levelling (i.e. adjusting the height) of all base support elements 4 in relation to one another, the solar roof system 2 comprises a mounting sleeve (not depicted in more detail), which forms a drilling template for forming fastening holes in the base ends 22 or the second support legs, respectively, of the each main support 6. For mounting, the respective base end 22 is first aligned in its height relative to the base plate 50 of the foundation adapter 24, in particular by means of spacers. Subsequently, the mounting sleeve (also called “quick mounting device”) is placed around the base end 22 of the respective main support 6 with contact to the base plate 50. The mounting collar has markings by means of which it can be unambiguously aligned in its rotational position around the standpipe 52. By means of the mounting sleeve, drilling points are then marked on the main support 6, which, due to the arrangement of the mounting sleeve in relation to the foundation adapter 24 described above, coincide with predetermined, specifically already existing drill holes 54 in the standpipe 52. The fastening drill holes are subsequently formed in the base ends 22 and the respective main support 6 is screwed to the standpipe 52. Specifically, two screws are used for each main support 6 for connection with the respective standpipe 52.

(21) In the example embodiment according to FIGS. 1 and 2 (i.e. when installed as butterfly roof), each base support element 4 is thus connected to the respective foundation adapter 24 with two screws. Both framework elements 12 of both base support elements 4 standing against one another at their rears as well as the rain gutter 34 are in turn connected to one another with a screw (“central screw”). The framework elements 14 and 16 are fastened to both main supports 6 of both base support elements 4 standing against one another at their rears by means of two further screws. This results in the two base support elements 4 standing against one another at their rears being fixed to one another and to the base adapters 24 by means of a total of seven screws.

(22) In FIG. 5, the rubber seal 33 is depicted, which is arranged between the individual solar panels 20 and is running transversely to the direction of the support legs 10. The rubber seal 33 has an approximately U- or V-shaped central section 56 which lies in a gap between the solar panels 20. Legs 58 of this central section 56 are adjoined by bearing wings 60, which abut against the lower side of the solar panels 20. Due to the roof pitch of the respective roof surface 18, the solar panels 20 “slide” towards the eaves and thus jam the central section 56 in the gap. During this, the legs 58 are pressed against one another. Furthermore, a sealing contour 62, which also lies in the gap, is moulded onto the upper side of the central section 56. In an optional variant, the gap is closed on the upper side with a sealing adhesive to form a surface that is as smooth as possible.

(23) In FIG. 6, an example embodiment of the support and sealing rail 32, which serves for retaining and connecting two solar panels 20 arranged adjacent to one another and transversely to the direction of the framework elements 12, is depicted in more detail. For this purpose, the support and sealing rail 32 is designed symmetrically to a symmetry plane 64 (aligned in parallel to the direction of the framework elements 12 in the intended mounting state of the solar roof system 2).

(24) The support and sealing rail 32 has a sealing profile 66 on both sides of the symmetry plane 64. This is elongated into the sheet plane (thus in the direction of the framework elements 12). The sealing profile 44 has a first sealing leg 68 and a second sealing leg 70, which are elastically coupled to one another via a hinge section 72 in a pivotable manner. Both sealing legs 68 and 70 as well as the hinge section 72 are monolithically formed from an elastomer, specifically a rubber. In the depicted mounting state, both sealing legs 68 and 70 are arranged in parallel to one another and embrace an edge 74 of one of the solar panels 20. In a pre-mounting state not depicted in greater detail, however, both sealing legs 68 and 70 are standing obliquely apart.

(25) In the intended mounting state, the first sealing leg 68 is arranged on an upper side 76, facing the sun, of the respective solar panel 20. The first sealing leg 68 has a labyrinth seal 78 on a bearing side facing the upper side 76 of the respective solar panel 20. By this, multiple troughs 80 are formed in the first sealing leg 68, succeeding one another from the outer rim in the direction of the edge 74, which troughs 80 run along the longitudinal extension of the sealing profile 66 and in which any liquid which has penetrated can drain off due to the inclination of the roof surface 18.

(26) At its outer rim, the first sealing leg 68 also has a sealing rim 82 which rests on the upper side 76 of the respective solar panel 20 while exerting a sealing force.

(27) The support and sealing rail 32 further also comprises a mounting rail 84. This mounting rail 84 comprises a double C-profile 86. Both C-legs 88 of each C-shaped part of the double C-profile 86 form a receiving groove 90 for the sealing profile 66 and the solar panel 20 received therein. In the depicted intended mounting state, the sealing profile 66 is thus folded around the respective solar panel 20 and inserted into the receiving groove 90. The sealing profile 66 is herein clamped against the solar panel 20 by the C-legs 88. Since each solar panel 20 is received in a support and sealing rail 32 on both sides transversely to the direction of the framework elements 12, any additional fastening of the solar panels 20, for example by means of screws, can be omitted since the frictional force applied by the sealing profiles 66 is sufficiently high for retaining the solar panels 20 in place.

(28) Since the sealing rim 82 projects from the receiving groove 90, it is coated with a UV-resistant plastic or formed from such a plastic.

(29) The mounting rail 84 further comprises a support rail 92 on which the double C-profile 86 is mounted. Also mounted to the support rail 92 is a drip and guide tub 94, which forms a drainage channel 96 for fluid passing between the sealing profile 66 and the respective solar panel 20. In addition, connection cables of the solar panels 20 retained by means of the support and sealing rail 32 are concealedly guided in the drainage channel 96.

(30) The mounting rail 84 is placed on the mounting rails 31 of the solar roof system 2 and fastened to them.

(31) In an alternative example embodiment for retaining and sealing the solar panels 20 in a rim-closing manner, which is not depicted in more detail, the support and sealing rail 32 has only one of the “halves” formed by the symmetry plane 64. I.e., the support and sealing rail 32 has only one receiving groove 90 formed by the C-legs 88 (thus only a “simple” C-profile) and a sealing profile 66.

(32) The subject matter of the invention is not limited to the example embodiments described above. Rather, further embodiments of the invention can be derived from the above description by the person skilled in the art. In particular, the individual features of the invention described by means of the various example embodiments and their design variants can also be combined with one another in other ways.

(33) In FIG. 7, a schematic sectional representation of an elastomer sealing profile is depicted in more detail. The elastomer sealing profile has a first sealing leg 68 and a second sealing leg 70. The first and the second sealing legs 68 and 70 are elastically coupled to one another via the hinge section 72 in a pivotable manner. Both sealing legs 68 and 70 as well as the hinge section 72 are herein monolithically formed from an elastomer, specifically a rubber. Both sealing legs 68 and 70 are arranged in parallel to one another in an intended mounting state depicted in FIG. 6 and embrace an edge 74 of one of the solar panels 20. In a pre-mounting state not depicted in more detail, however, both sealing legs 68 and 70 are standing obliquely apart.

(34) In the intended mounting state, the first sealing leg 68 is arranged on an upper side 76, facing the sun, of the respective solar panel 20, whereas the second sealing leg 70 is arranged on the lower side of the respective solar panel 20 in the intended mounting state.

(35) The first sealing leg 68 has the labyrinth seal 78 on a bearing side facing the upper side 76 of the respective solar panel 20. The labyrinth seal 78 is herein formed by two elongated sealing lips 79, each of which spans a trough 80 formed in the bearing side. The sealing lips 79 are herein designed in such a way that in the pre-mounting state they project from the bearing side in a V-shaped manner (indicated in FIG. 7 by a dashed line). In the intended mounting state, on the other hand, the sealing lips 79 are pressed back from the upper side 76 of the respective solar panel 20 and then lie flush with one another and planar on the upper side 76 (compare FIG. 6).

(36) At its outer rim, the first sealing leg 68 also has the sealing rim 82, which is also pressed back from the upper side 76 of the solar panel 20 in the intended mounting state (cf. dash line). The sealing lips 79 and the sealing rim 82 thus exert a sealing force on the upper side 76 of the solar panel 20.

(37) On its side facing the lower side of the solar panel 20, the second sealing leg 70 has the sealing surface 102, which is formed by a plurality of notches 104 running in the longitudinal direction.

(38) Since the sealing system in the example embodiment according to FIG. 7 runs along the direction of inclination of the solar roof system, the troughs 80 as well as a chamber 106 formed between the sealing legs 68 and 70 and the hinge region 72 each form drainage channels for water which penetrates through up to them despite sealing.

LIST OF REFERENCE NUMERALS

(39) 2 solar roof system 4 base support element 6 main support 8 bending region 10 support leg 11 vertical line 12 framework element 14 framework element 16 framework element 17 bend outer side 18 roof surface 22 solar panel 22 ground end 24 foundation adapter 26 foundation 27 level line 30 transverse support 31 mounting rail 32 support and sealing rail 33 rubber seal 34 rain gutter 40 ridge seal 42 framework element 44 tension strut 50 base plate 52 standpipe 54 hole 56 central section 58 leg 60 bearing wing 62 sealing contour 64 symmetry plane 66 sealing profile 68 sealing leg 70 sealing leg 72 hinge section 74 edge 76 upper side 78 labyrinth seal 79 sealing lip 80 trough 82 sealing rim 84 mounting rail 86 double C-profile 88 C-leg 90 receiving groove 92 support rail 94 drip and guide tub 96 drainage channel 98 protective body 100 heel 102 sealing surface 104 notch 106 chamber W total span width