DE202010007392U1 - Profile rail, in-roof frame for framed solar modules and solar module arrangement - Google Patents

Abstract

Profile rail (100) for the storage of framed solar modules,
- Which is designed as a stackable extrusion profile and has the following profile in a cross-sectional view:
a) on both sides of a central comb (102) extends on a gradation depending on a first support surface (104, 106) for each solar module frame or, in stacked storage, for another, identically formed rail (200),
b) to the bearing surfaces (104, 106) closes, with respect to the central comb to the outside, each a trough (108, 110).

Description

The The present invention relates to a rail for the Storage of framed solar modules, an in-frame frame for framed Solar modules, a solar module arrangement, as well as a pitched roof with a solar module arrangement.

From the German utility model DE 297 10 657 U1 is a solar module assembly with an in-frame for mounting unframed photovoltaic modules or solar panels on a pitched roof known. Photovoltaic modules and solar collectors are understood in the context of this description as embodiments of solar modules and sometimes referred to with the same meaning as modules for short. The term "solar module" is here so - unlike in the DE 297 10 657 U1 - to understand as a generic term for different types of energy converter modules for solar energy.

Solar module arrangements with roofing inlays form the roof covering at the place of their installation. They must therefore be in addition to energy conversion perform the usual functions of roofing, in particular at least as good a seal against rainfall and melt water.

The known in-roof frame contains rails for mounting the solar modules, in their longitudinal direction from the eaves to the Roof ridge run and with a lateral distance of approximately a module width at the underlying roof construction, so usually attached to a roof truss.

Water resistance is at the DE 297 10 657 U1 reached, inter alia, by a shingled storage of solar modules. Fastened to the rails module hooks serve in the overlapping region of the roof ridge to the eaves adjacent solar modules for holding the respective upper solar modules at their eaves end and transferred by their multi-curved, Z-like shape, the on and resting load at least partially in the roof structure. In this area, the solar module projects beyond the rail on which it is mounted in its longitudinal direction. The profiled rails have on both sides of an imaginary center plane two bearing surfaces for edge pieces of unframed solar modules. Between these bearing surfaces a recess is arranged, over which a gap remains free.

The from the DE 297 10 657 U1 known device is not suitable for mounting framed solar modules. By using frames, the height of the solar module system in the overlapping region of the modules would be greatly increased, which is undesirable, since it can lead to a shading of the solar modules with each other and thus the expected energy yield is significantly reduced

One from the DE 20 2007 006 154 U1 Known alternative constructions for framed solar modules provides a seal against water between the modules and the roof construction through a corrugated metal sheet. The modules do not form the water-bearing layer. The water is guided along the corrugated sheet under the modules. When removing a module, the tightness of the roof is ensured by the corrugated metal sheet. However, this solution requires a higher installation cost.

The technical problem underlying the present invention is to provide a rail, as in the in-roof system of DE 297 10 657 U1 is used, so on to form that it is better suited for the installation of framed solar modules.

One Another technical problem underlying the present invention is, is it, an in-frame frame for framed solar modules specify that a simple installation and at the same time a high density a mounted on it solar module system with low height comparable to a conventional tile roofing and without shading enabled by the arrangement of the modules entsteht-.

After all it is a technical basis of the present invention Problem to provide an easily assembled solar module assembly, which is designed as an in-roof system and a high density against Has melting and rainwater.

The Invention manifests itself in several related Aspects that are based on a common idea and explained below.

• a) beidseitig eines Mittelkamms erstreckt sich auf einer Abstufung je eine erste Auflagefläche für je einen Solarmodulrahmen beziehungsweise, bei gestapelter Lagerung, für eine andere, gleich ausgebildete Profilschiene;
• b) an die Auflageflächen schließt sich, bezüglich des Mittelkamms nach außen hin, jeweils eine Profilrinne an.

According to a first aspect of the invention, the problem is solved by a profiled rail which is designed as an extruded profile which can be stacked in one another and which has the following profile in a cross-sectional view:

• a) on both sides of a central comb extends on a gradation depending on a first support surface for each solar module frame or, in stacked storage, for another, identically formed rail;
• b) to the bearing surfaces closes, with respect to the central comb to the outside, in each case a trough profile.

The Profile rail of the present invention is characterized by a novel construction of its central part in the shape of a central crest out. The center comb allows in a solar module arrangement with framed modules using these rails high water resistance. Water coming from either the solar module frame flows into the rail or inside of the middle comb ago The profile rail flows downhill, is safe passed into the troughs and can due to the stackability drain the profile rails with shingled storage, without being able to penetrate into the underlying roof construction. Melting and rainwater that does not have the solar modules drains off so safely from the ridge to the eaves through derived the troughs.

The inventive rail allows a storage area due to its particularly space-saving stackability and thus storage costs reducing storage after their production and before their assembly. Also transport costs to the installation site will be reduced due to the space-saving stackability.

following Be exemplary embodiments of the invention Profile rail described. The additional features of different Embodiments can be used together to form further embodiments are combined.

The new construction of the profile rail in the area of the middle crest and the bearing surfaces is preferably designed that the middle crest considered in cross section in about one on the head Formed U-shape forms. Alternatively, a cross-sectional profile, which forms the shape of an inverted V, possible. However, the U-profile has static advantages. With stacked storage of profile rails can into each other, the ends of the vertical U-beams on the crest surface, ie on the horizontal Beams of the middle crest of the underlying, equally trained Resting rail.

The Troughs have in preferred embodiments stepped Gutter walls with stepped surfaces on each same Height above a gutter floor. These step surfaces form contact surfaces for a channel bottom of the corresponding trough of another, the same trained second Profile rail with stacked storage.

Around on the one hand an additional guidance of each other Stacked rails to achieve in their longitudinal direction and on the other hand, the overhead rail against a suction to protect against "taking off" when the wind blows are in one embodiment on the gutter inner walls in upper trough section above the step surfaces Guide projections arranged. Corresponding on the gutter outer wall of a lower trough section corresponding protrusions present to a meshing the different projections in a stacked arrangement allow the rails. It is enough, this Guide projections on one side of the trough to arrange. Preferably, with respect to the middle comb further outward channel wall used for this purpose.

For a particularly space-saving storage and a special liquid-tight frame construction is in the inventive Profile rail preferably an outer dimension of a lower trough section of the troughs smaller or equal an inner dimension of an upper trough section of the Tread grooves, a step height between a gutter bottom and a step bottom on an outside of the gutter wall approximately equal to a height difference between the Step surface on the gutter wall and the support surface for the solar module frame on an inside of the gutter wall.

Around to provide a suction protection of the mounted framed solar modules, the central comb has one or more openings in its comb surface on. In this example, threaded sleeves or other fasteners are introduced, what further will be explained in more detail below. Also the gutter floor the troughs preferably has openings with which the rails mounted on roof battens a roof construction can be.

a Another aspect of the present invention is an in-roof rack for framed solar modules, the shingled mounted rails according to the first aspect of the invention or one of its Embodiments includes. The rails of the in-roof frame Run on an underlying, but not to the roof frame belonging roof construction in one of a eaves to a First of the roof construction, pointing longitudinal direction, at a roof truss so typically parallel to the rafters. Transversely thereto, ie in the distance direction of adjacent rafters of the Roof truss, have the rails of the invention Indachgestells a distance from each other, the width of the corresponds to stored framed solar modules.

The in-roof frame according to the invention is characterized in that it allows a water discharge in the plane of the solar modules, namely in the profile channels of the rail without additional sealing measures between the in-roof frame and the roof truss must be provided. It is thus structurally very simple. Incidentally, the in-roof frame has the advantages already explained above in connection with the profiled rails according to the invention.

to Achieving an effective Sogsicherung has the invention Indachgestell preferably T-shaped Sogsicherungs elements. These are in a preferred embodiment of the middle comb attached to the rail. This can be done with help, for example an opening in the crest surface of the central crest be accomplished. In the opening can be a sleeve be introduced with an internal thread from the bottom the middle comb is attached against suction. This sleeve can have an internal thread into which a at the bottom of T-shaped suction fuse arranged bolt piece can be screwed.

a Another aspect of the present invention is a solar module assembly with a large number of framed solar modules on an in-roof frame according to the second aspect of the invention or a his embodiments are stored.

The Solar module arrangement according to the invention divides the Advantages of the in-roof frame and the profile rails, which above already described. In the inventive Solar module arrangement are in the longitudinal direction of the rails adjacent

The Solar modules are in the inventive arrangement preferably not shingled installed, but stepwise abutting assembled. Frame tops of the adjacent solar modules have it a small height distance from each other, the height distance corresponds to the bearing surfaces of the rails from each other, in the relevant longitudinal section on which the solar modules cling together, are shingled stored. To this Way, the construction height of the solar module assembly is low held.

at this form of installation of the solar modules resulting gaps between the adjacent in the longitudinal direction of the rails Solar modules are preferably by a seal against penetration protected by water. The seal can, for example through a sheet, a rubber or a combination of a sheet with be performed a rubber seal. Loads must be one not transfer such seal. Additional wind and snow loads as well as the loads of the framed solar modules solely on the mounting rails on the substructure passed the roof truss.

a Another aspect of the invention forms a pitched roof a roof truss and an in-roof frame according to the second aspect the invention or one of its embodiments, or with a solar module arrangement according to the third Aspect of the invention or one of its embodiments.

The Advantages of the pitched roof according to the invention result directly from the description of the above Aspects of the invention. The pitched roof according to the invention has a solar module construction without additional sealing between the solar panels and the roof truss and water discharges only in the plane of the solar modules or the rails.

following Be further embodiments of the invention based described in the accompanying figures. Show it:

1 a cross-sectional view of a rail according to an embodiment of the invention;

2 a cross-sectional view of two shingled mounted rails in a portion of their overlap

3 an embodiment of a solar module assembly on a roof of a pitched roof; and

4 a detail of the solar module assembly of 3 in a side view.

1 shows an example of a rail according to the invention 100 in a cross-sectional view. The cross-sectional view of 1 has a perspective view component, but limits the perspective view to a short piece of the rail 100 in their longitudinal direction, for the sake of clarity, without omitting essential structural features.

The profile rail 100 is mirror-symmetric with respect to a symmetry plane S constructed in 1 is characterized by a dashed line and in the longitudinal direction of the rail 100 continues. The plane of symmetry S passes through a central ridge 102 whose crest surface 102.1 on the top of the rail extends on both sides of the plane of symmetry. The middle comb 102 has the shape of an inverted "U". The mentioned comb surface 102.1 corresponds to the horizontal bar of the "U". Lateral walls 102.2 and 102.3 correspond to the vertical bars of the "U". The side walls 102.2 and 102.3 are approximately right or exactly perpendicular to the top of the central ridge 102 So, to the crest surface 102.1 , The middle crest is down open.

On the side walls 102.2 and 102.3 close on both sides of the middle crest parallel to the crest surface 102.1 lying contact surfaces 104 and 106 at. The bearing surfaces serve for the storage of frames laterally adjacent solar modules (not shown). On each side of the middle crest, an edge piece of a frame of a solar module is to be stored. The side walls 102.2 and 102.3 serve as a contact surface for the respective frame and prevent lateral slipping of the framed solar module.

To the bearing surfaces 104 and 106 close to the outside (with reference to the middle crest 102 or the symmetry plane S) troughs 108 and 110 at. The trough 108 on the left side of the symmetry plane S will be described in more detail below. The reference numerals used here 108.1 to 108.10 correspond to the reference numerals like parts of the trough profile 110 , with 110.1 to 110.10 Marked are. For a more detailed description of the structure of the right trough profile 110 can be dispensed with for the sake of scarcity. The clarity of the presentation in 1 Half are Maßbezeichnungen only in the right profile trough 110 located. It should be noted that the profile channels completely correspond in their respective dimensions due to the illustrated symmetry of the profile in the present embodiment.

The left trough 108 has stepped gutter walls 108.1 (outside) and 108.2 (Inside). Opposite a gutter floor 108.3 have the step surfaces 108.4 and 108.5 on the gutter walls 108.1 and 108.2 the same height h1. The step surfaces 108.4 and 108.5 form bearing surfaces for a groove bottom of a corresponding tread channel when two rails are mounted one above the other. This will be explained below using 2 explained in more detail. In order to enable this form of stackability, the dimensions of the troughs are suitably chosen. In particular, an outer dimension x1 of the lower trough section should 108.7 below the step surfaces 108.4 . 108.5 less than or equal to an inside dimension x2 and an upper profile trough portion 108.6 above the step surfaces 108.4 . 108.5 be. In the present embodiment, a difference of the lateral dimensions x1 and x2 is inter alia due to the fact that on the inside of the outer channel wall 108.1 a leadership advantage 108.8 is provided, under which up to the step surface 108.4 a clear space for receiving a corresponding guide projection 108.9 on the outside of the gutter wall 108.1 extends. Therefore, the left step surface falls 108.4 wider and is the inner dimension x2 of the upper profile section 108.6 in this case larger than the outer dimension of the lower profile section 108.7 ,

For the space-saving stacking of different troughs into each other in addition the step height h3 on the outside of the gutter walls is approximately equal to the height distance h4 between the closer to the central comb 102 lying step surface 108.5 and the overlying support surface 104 ,

The profile rail 100 is made of extruded aluminum. Their appropriate installation in an in-frame and their operation and advantages will be explained in more detail with reference to the description of the following figures.

2 shows a cross-sectional view of two shingled mounted rails in the portion of their overlap. The cross-sectional view thus shows the profile rail 100 in a longitudinal section, in which she with an overlying rail 200 stacked in each other. This shingled storage ensures a safe drainage of rainwater and melt water within the profile rails when mounted on a pitched roof as explained. The profile rail 200 is the same as the profile rail 100 much as possible. Therefore, corresponding reference numerals are used for the same parts of the two rails, which only by the imaginary digit 2 at the rail 200 instead of 1 in the profile rail 100 differ.

The upper profile rail 200 is with her troughs 208 and 210 into the troughs 108 and 110 the lower profile rail 100 introduced. The guide projections 108.8 and 208.9 engage each other and prevent due to their positive connection, that the upper rail 200 is lifted under suction from the lower rail in wind. In addition, there is a common attachment of the rails for Sogsicherung 100 and 200 with the help of screws 302 and 304 intended. The screws 302 and 304 extend through openings 108.10 and 208.10 in the gutter bottoms 108.3 and 208.3 through into a roof construction (not shown).

The upper profile rail 200 is based on numerous surfaces of the lower rail due to the special shape of their profile. This allows a particularly well-distributed passage of loads that exerts a framed solar module (not shown here) with any additional loads by snow or wind on the rails. So are the bearing surfaces 204 and 206 the rail on the one hand on the comb surface 102.1 the lower rail supported and on the other on the lower support surfaces 104 and 106 , Another support of the upper frame 200 takes place in the troughs 108 and 110 , on the step surfaces 108.4 . 108.5 respectively. 110.4 . 110.5 , Finally, the tops of the outward white also offer send gutter walls 108.1 and 110.1 a support surface for the upper rail 200 ,

In 2 is also a Sogicher 400 for a framed solar module. Suction fuses - also referred to below as module holders - are arranged on longitudinal sections of the profile rails, cf. 3 and 4 , The relevant specifications of the module manufacturer, who as a rule prescribe an attachment in each case to one quarter of the module length, are decisive for the positioning.

The module holder 400 is characterized by a cross-sectionally T-shaped upper part 402 in conjunction with a threaded bolt 404 formed at the bottom of the vertical T-bar. The threaded bolt 404 is in a threaded sleeve 406 screwed in, extending through the opening 212 in the crest area 202 the rail extends. The threaded sleeve is a rivet nut which, without any further fastenings, represents a stable and tight thread for fastening the module holder.

An alternative profile provides a fastening with a screw, as in DE 297 10 657 U1 is described.

A lateral slippage of the mounted on the rail solar modules is by support rubbers 502 and 504 prevented. These have on their top a grooved profile to reinforce the security of the solar module frame against lateral slipping. In addition serve the support rubbers 502 and 504 to and the corrugations in the surface profile of a padding of the solar module frame, which in particular when tightening the module holder 400 is advantageous during assembly and protects the solar module frame from damage.

3 shows a perspective view of an in-frame 700 a solar module assembly 800 in a mounted state on a pitched roof 600 , In the assembly stage shown are three framed solar modules 802 . 804 and 806 the solar module assembly 800 already assembled.

The pitched roof 600 is only partially shown in this illustration. The in-roof frame 700 is on either already existing or supplemented battens 602 the roof construction mounted. Horizontal roof battens 602.1 to 602.10 are in 3 shown. These are in turn on rafters 604 attached. Further details of the roof construction are not shown here. The pitched roof 600 has a slope that is typically at least 16 degrees, but this is not to be understood as limiting the applicability of the present embodiment. For other inclinations the system is equally suitable. The in-roof frame 700 is on the pitched roof 600 used for direct integration of framed solar modules in the roof, regardless of the type of other roofing. The retrofit frame replaces the retrofitting of the solar module arrangement 700 with the solar modules the previous roofing at the installation site. Side and top cover plates 702 and 704 and an upper cover plate 706 of the in-frame and a lower cover plate not visible in this illustration allow a watertight transition between the solar module assembly and the normal roof covering, which in the representation of 3 is not shown.

The rails of the roof rack 700 are stored shingled. This is in 3 based on the rails 708 and 710 shown in a circled longitudinal section (overlap area) 712 are introduced into each other, cf. also 2 , The rails are longer than the solar module frame mounted on them. The length by which the profile rails project beyond the solar module frame corresponds at least to the extent of the overlapping area 712 in the longitudinal direction of the rails. In order to be able to adapt the system to modules of different sizes, this length can also be selected larger than the specified minimum length.

The following is in addition to 4 Reference is made, which is a side view of the solar module assembly 800 in one area 808 shows, in which the two in the longitudinal direction of the rails adjacent solar modules 802 and 804 abut. Unlike the (in 3 concealed) profile rails 714 and 716 of the in-frame, which in the area 808 Shingled stored, the solar module frame 804 and 806 here without mutual overlapping each other. To seal the resulting gaps at the abutment surfaces is a seal 718 provided, which consists of a rubber material or a rubber-sheet combination.

A height difference between the top of the solar module frame 804 and the solar module frame 806 corresponds to the in 2 apparent height difference of the comb surfaces 102.1 and 202.1 from each other. This corresponds to the height distance that the bearing surfaces of the superposed in the respective longitudinal section of their shingled mounting rails of each other. In this way flows from the module 806 down on the module 804 running rain or melt water without being able to penetrate into the roof construction. The water drainage of the side of the solar modules running laterally from the eaves to the ridge takes place through the profile rails 714 and 716 ,

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 29710657 U1 [0002, 0002, 0005, 0006, 0008, 0047]
• - DE 202007006154 U1 [0007]

Claims (11)

Profile rail ( 100 ) for the storage of framed solar modules, - which is designed as a stackable extruded profile and in a cross-sectional view has the following profile: a) on both sides of a central comb ( 102 ) extends on a gradation depending on a first bearing surface ( 104 . 106 ) for each one solar module frame or, in stacked storage, for another, identically formed profile rail ( 200 ), b) to the bearing surfaces ( 104 . 106 ) closes, with respect to the central comb outward, each a trough ( 108 . 110 ) at. Profile rail according to claim 1, whose middle comb ( 102 ) forms in the cross-sectional view approximately an upside down U-shape. Profile rail according to one of the preceding claims, in which the troughs ( 108 . 110 ) stepped gutter walls ( 108.1 . 108.2 ) with step surfaces ( 108.4 . 108.5 ) at the same height above a channel bottom ( 108.3 ), the contact surfaces for a channel bottom ( 210.3 ) of the corresponding trough ( 210 ) of the other, identically formed profile rail ( 200 ) form. Profile rail according to claim 3, in which - an outer dimension (x1) of a lower profile channel section ( 110.7 ) of the troughs less than or equal to an inner dimension (x2) of an upper trough section ( 110.6 ) of the troughs and - a step height (h3) between a gutter bottom ( 110.3 ) and a step lower side on an outside of the gutter wall ( 110.1 ) approximately equal to a height distance (h4) between the step surface ( 110.5 ) on the gutter wall and the bearing surface ( 106 ) is for the solar module frame on an inner side of the channel wall. Profile rail according to one of the preceding claims, whose middle comb ( 102 ) in its crest surface ( 102.1 ) one or more openings ( 112 ) for receiving a module holder ( 400 ) for a framed solar module. In-roof frame ( 700 ) for framed solar modules ( 802 . 804 . 806 ), comprising: - shingled profiled rails ( 100 . 200 ) according to one of claims 1 to 5, on an underlying, not belonging to the in-frame roof truss in a pointing from a eaves to a ridge of the attic longitudinal direction extending at a distance from each other perpendicular thereto, which corresponds to a width of the framed solar modules to be stored, attachable or attached. An in-frame frame according to claim 6 with profiled rails according to claim 5, wherein in the openings of the comb surface of the central comb a T-shaped module holder ( 400 ) on the respective profile rail ( 100 . 200 ) is attached. Solar module arrangement ( 800 ) with a multiplicity of framed solar modules ( 802 . 804 . 806 ) mounted on an in-frame ( 700 ) are mounted according to claim 6 or 7. Solar module arrangement ( 800 ) according to claim 8, wherein in the longitudinal direction of the profile rails ( 100 . 200 ) adjacent solar modules ( 802 . 804 ) are mounted staggered abutting each other, wherein frame top sides of the adjacent solar modules have a height distance from each other, which corresponds to the height distance, the support surfaces ( 106 . 206 ) of the superposed in the relevant longitudinal portion of their geschindelter storage rails ( 100 . 200 ) to have. Solar module arrangement according to claim 9, wherein a gap between the solar modules adjacent in the longitudinal direction of the profile rails by a seal ( 718 ) is protected against ingress of water. Pitched roof ( 600 ) with an in-roof frame ( 700 ) according to claim 6 or 7 or with a solar module arrangement ( 800 ) according to one of claims 8 to 10, which or on a roof truss ( 602 . 604 ) of the pitched roof is attached.