The present invention relates to a carrier for a solar panel in slanted position, comprising: a base; and a support on the base for a low side of the solar panel, and an assembly of a carrier and a solar panel.
The invention can be applied together with photovoltaic and/or thermal solar panels.
The known carriers are designed and shaped substantially for positioning under a solar panel arranged thereon. Solar panels are mounted on and extending wholly above the carriers. This ensures that no parts of the carrier can cast a shadow on the solar panels arranged thereon, which would reduce the efficiency of this solar panel.
The known carriers do however also have drawbacks, particularly in respect of the resulting weight thereof in combination with a possible ballast or in respect of attachment to for instance a roof of a building. It must be ensured during mounting or unattached placing that an assembly of carrier and solar panel remains stable at a location, even in relatively extreme weather conditions. In order to meet this requirement carriers are known with holders for holding a ballast for the purpose of holding the carrier with the solar panel immobile. A roof or other part of a building has however a limited load-bearing capacity in terms of kilos per unit area. This load-bearing capacity is often insufficient for the carrier having a quantity of ballast required for immobilization purposes therein. Furthermore, the weight of the carrier with the solar panel and the ballast can increase further when rainwater accumulates in a holder for the ballast, so that the load-bearing capacity of the roof is still exceeded following a more less or heavy downpour of rain.
Nor does it usually suffice to rely on fastening means such as screws, bolts and nuts etc., since the forces acting hereon when wind exerts force on a panel are in the longer term almost impossible to withstand. It is only possible to come close to stationary placing using very heavy and robust mounting measures, and even here there is then the risk that the load-bearing capacity of the roof is not equal to such heavy constructions.
The invention has for its object to obviate or at least reduce the drawbacks of the known carriers and assemblies, for which purpose a carrier and an assembly with this carrier and a solar panel comprise all features of the corresponding appended independent claims.
The use of, in particular, the claimed vertically upright plate-like edge, extending in the area above the solar panel, runs counter to the wishes and preconceived notions of professionals working in this field.
However, the presence of the wing profile makes it possible according to the present invention that a gust of wind (or steady wind) exerts no force on the carrier or the panel and/or that on the contrary a downward pressure is created on the carrier or the panel. Thus made possible is that ballast can be reduced and/or a mounting construction can be given a lighter form, and the load-bearing capacity of a roof or other part of a building is thus not endangered.
In a possible preferred embodiment of the invention a carrier according to the invention comprises the additional feature that the rear side of the wing profile opposite the support comprises a bearing element for a high side of an adjacent solar panel. The carrier can thus bear a solar panel on either side, and each solar panel can be supported on opposite edges or sides. The carrier can have the feature here of at least one fixing element associated with the bearing element and acting on the solar panel during use. Simple clamps or hooks can for instance form fixing elements. Preferably envisaged are forms of fixing element which are also easy to release for the purpose of maintenance and/or replacement of solar panels and so on. Such “light” mounting means are only possible because the wing profile reduces or even eliminates a lifting force on the panels and/or carriers.
The carrier with the bearing element according to various embodiments has the further feature that on the upper side of the wing profile a diffuser is arranged which has the form of an edge protruding above the adjacent solar panel. This protruding and vertically upright plate-like edge achieves laminar airflow disruption so that lift can be reduced or, in determined embodiments, even almost wholly eliminated, and/or downward pressure can be generated.
In an embodiment in which carriers are stackable and nestable, transport can be simplified and the costs thereof reduced.
In a possible preferred embodiment of the invention a carrier according to the invention comprises the additional or alternative feature of at least two trestles at least substantially identical to each other. The trestles are or can be disposed adjacently of each other along an associated low (or high) side of the solar panel in order to provide in combination a support (or a bearing element), or can have been, or be disposed opposite each other relative to the solar panel in order to together provide both a support and a bearing element for the solar panel. When the carriers are identical to each other, mounting by workmen can be simplified as a result of smaller numbers of different elements and components.
In a possible preferred embodiment of the invention a carrier according to the invention comprises the additional or alternative feature that the trestles comprise coupling parts and can be coupled releasably to each other in a row. The coupling parts of adjacent trestles can here be complementary coupling parts and/or locking elements can be arranged between two adjacent trestles for the purpose of locking these latter to each other. Simple clamps or hooks can for instance form such locking elements. Preferably envisaged are forms of locking element which are also easy to release for the purpose of maintenance and/or replacement of solar panels, and so on.
In a possible preferred embodiment of the invention a carrier according to the invention has the additional or alternative feature of at least one arresting element associated with the support and acting on the solar panel during use. Simple clamps or hooks can for instance form such arresting elements. Preferably envisaged are forms of arresting element which are also easy to release for the purpose of maintenance and/or replacement of solar panels and so on.
In a possible preferred embodiment of the invention a carrier according to the invention comprises the additional or alternative feature that a passageway is defined between the support and the wing profile. Cleaning and/or maintenance operations can thus be performed from the passageway, this representing a considerable simplification compared to previous carriers wherein cleaning and/or maintenance staff had to manoeuvre between the carriers and panels while balancing with difficulty in order to get at a panel for cleaning or servicing. Tiles or paving can be laid on the passageway to form ballast for the purpose of immobilizing the carriers and the assembly thereof with solar panels.
As already noted, the present invention also relates to an assembly of at least one carrier, having the features stated above or to be further described or defined hereinbelow, in combination with a solar panel positioned in slanted position during use, wherein a low side of the solar panel rests on the support of the carrier.
As already noted, the present invention also relates to an assembly of at least one carrier, having the features stated above or to be further described or defined hereinbelow, in combination with a solar panel positioned in slanted position during use, wherein a high side of the solar panel rests on the bearing element of the carrier.
The carrier thus serves to support or bear a side (high or low) of the solar panel, wherein the wing profile prevents the wind exerting an upward force on the solar panel, or wherein a downward pressure even occurs.
In a possible preferred embodiment of the invention an assembly according to the invention has the additional feature of a first carrier on the high side of the solar panel and a second carrier on the low side of the solar panel, wherein an elongate connecting element is arranged between the first and the second carriers. Such a connecting element can be arranged during assembly in order to maintain the distance between the carriers. At least one of the first and second carriers can comprise a connection here for releasable connection, thereof to the connecting element. Additionally or alternatively, the assembly can comprise the feature that indicators are arranged in, on or at the connecting element, these indicators being related to the length of the solar panel between the first and second carriers and the desired angular position of the solar panel relative to the horizontal. The connecting element can thus have, even during assembly, an informative function for workmen who have to carry out the assembly. The carriers can be placed at a suitable distance and the solar panel then arranged thereon, the solar panel fitting in the slanted position thereof between and on the carriers owing to the presetting of the distance between the carriers on the basis of the indicators on, in or at the connecting element.
By way of example—and not by way of limiting or inappropriate explanation of the appended claims—a number of embodiments of a carrier and an assembly according to the present invention will be described hereinbelow with reference to the accompanying drawing, wherein the same or similar parts, components and aspects can be designated with the same reference numerals, and in which:
Shown in
Connecting element 4 comprises in, on or at the surface thereof a number of indicators 5 corresponding to the absolute length of solar panel 3 in combination with the slanted position thereof. The distances at which trestles 2 must be placed will thus be apparent to workmen when they are configuring the assembly 1, on the basis of prior knowledge of the absolute length of solar panels 3. Use is made here of Pythagoras' theorem as shown schematically with reference to
Solar panels 3 are preferably placed in a landscape orientation, since a larger solar panel 3 mainly requires support over the long side. The carrier according to the invention provides this support by placing solar panels 3 in a landscape orientation. In an alternative a coupling profile 35 can be provided which, in the case of placing in a portrait orientation, can be arranged on the long side(s) of a solar panel 3 as shown in
When coupling piece 35 is mounted on a final panel 3 in an array or row, the leaf spring or springs 38 on the outer side can be removed.
Clearly shown in the perspective view of
Clip 14 in
Clip 13 in
It will be apparent that clips 13, 14 can take very light forms while they have to hold solar panel 2 in place against supports 8 or bearing elements 9, this only being possible due to the stationary position of solar panel 3 achieved by reducing the chance of lift, or by even realizing downward pressure as a result of wing profile 7.
In the embodiment of
Clearly shown in the views of
Noted above is that, as also shown in enlarged view in
It is noted that the carriers or trestles 2, 15 in the embodiment of
It will thus he immediately apparent that a great many alternative and additional embodiments are possible within the scope of the present invention, the limits of which are defined solely in the appended independent claims and the dependent claims, just as the preferred embodiments drawn and described above should in no way be interpreted as wrongful limitation of the scope of protection for the present invention. The trestles as embodiment of carriers need not therefore per se be nestable or stackable, even though this provides evident advantages in transport and assembly. Nor does a compartment need to be provided for ballast when the material from which the trestles are manufactured is sufficiently heavy so that, in combination with the downward pressure or in any case the absence of lift in the case of wind, it is able to remain in place. Lift need not be wholly eliminated, although the wing profile should be designed and intended to reduce lift and possibly even generate a downward pressure in order to compensate lift. None of the fixing elements, connecting elements, arresting elements, coupling parts or other connection measures and members is described or shown here with the purpose indicating the sole option available for mounting panels on the trestles or for mutual connection of the trestles. Integrated claws with resilient engaging elements can also be implemented in the trestles, wherein solar panels need only to be placed in the claws so that arresting elements and fixing elements are integrated or at least need not be provided as separate measures. Such a variant, wherein solar panels drop or are placed into claws which engage round the solar panels along the edges thereof, is that the trestles can be pushed toward each other in adjacent rows along the connecting elements and panels 3 then drop automatically into the claws. If desired, guide tracks or strips can also be implemented for this purpose which carry relevant edges of solar panels to claws for engagement of the edges of the solar panels when the trestles have approached each other sufficiently closely in abutting rows. In yet another embodiment (not shown) the carrier has a two-part or multi-part configuration, wherein a first moulded part with wing profile 7 and passageway 17 and high bearing elements 9 for solar panel 3 can be mounted as releasable coupling part on a lower trestle forming a second moulded part. The lower trestle can also comprise (a part of) passageway 17, and then also comprises the support 8 for solar panel 3 and compartments 18 for receiving ballast therein.
Measures for placing and clamping of connecting element 4 could also be incorporated in the lower trestle.
Such an embodiment of a carrier can bring logistic advantages, although there may also be advantages in terms of production and assembly. In the case of a first row of carriers of assembled trestles, which first row will or can in general be disposed on the south-facing side, the mounting of the moulded part comprising wing profile 7 can moreover be dispensed with. When there is an airflow from this wind direction, a more favourable approach flow of the airflow is hereby realized, and as a result there is less grip on the whole construction.
An important property of the invention is that an array can consist of a plurality of rows of assembled trestles 2 and solar panels 3. Owing to the favourable guiding of airflows only the trestles 2 at outer ends of this array need be provided with ballast. The weight load on a roof construction—when such an array is arranged on a roof—hereby remains minimal.
In yet another embodiment (not shown) the carrier, the trestle part with all details as shown in the figures, is embodied such that the carrier row on the south-facing side of the whole structure can be rotated 180°. Wing profile 7 hereby also forms a more favourable guiding of the wind on this side in the case the approach flow is from southerly direction. Characteristic of this embodiment is that the carrier comprises a low support 8 on both sides.
The above description of alternative embodiments is in no way limitative of the present invention.
Number | Date | Country | Kind |
---|---|---|---|
2007228 | Aug 2011 | NL | national |
The present application is a U.S. National Phase filing of International Application No. PCT/NL2012/050542, filed on Jul. 31, 2012, designating the United States of America and claiming priority to and the benefit of NL 2007228, filed Aug. 5, 2011. The present application claims priority to and the benefit of the above-identified applications, and the above-identified applications are incorporated by reference herein in their entirety.
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/NL2012/050542 | 7/31/2012 | WO | 00 | 5/22/2014 |