FR2905751A1 - Solar sensor device for roof of construction, has case that is covered by cover made of translucent material e.g. glass, where cover is integrated with case by using peripheral assembly section - Google Patents

Abstract

The device has a case (2) that is covered by a cover (22) made of a translucent material e.g. glass. The cover is integrated with the case by using a peripheral assembly section (26). The section is embedded in periphery on the cover and comprises a fixation tab (28) that extends exterior to a peripheral edge (4) of the case. The tab defines a protection flap (25) that extends on a roof covering and adapts shape for stopping infiltration of dirt between the device and a roof, where the section has an embedding chute.

Description

The invention relates to a solar collector device in the form of a

  panel defined by a chest having a bottom and a peripheral rim, in the trunk being arranged exchange fluid heat recovery means and an absorber and / or reflector of light rays, the trunk is closed by a cover in translucent material, especially glass. The present invention owes its application in the field of solar collector devices in the form of panels, in particular for an exhibition on the roof of construction.

  Already known solar collector devices, very commonly called solar panels, as described above. Thus such panels are usually defined by a box having a bottom bordered by a peripheral rim, knowing that, in a usual manner, on this peripheral rim, comes to rest a plate of a translucent material, in particular glass, closing the trunk in the manner of a lid. The poor sealing of the connection between this plate and the trunk, often noted due to deformation phenomena under the effect of constraints, including temperature, is detrimental to the longevity and good performance of the solar collector. Inside the trunk take position of heat recovery fluid exchange means, generally in the form of a coil described by a tube containing a heat transfer fluid. The design of solar collector devices must meet the imperatives, low weight on the one hand to not unnecessarily solicit the framework of constructions on which they are located, of manufacture at the best cost, in large series, to make these competitive sources of energy. It is therefore constantly sought a decrease in the sections of material used, generally detrimental to the rigidity of the whole, and resulting in a warping. This phenomenon is further aggravated by the constraints related to external agents, the influence of temperature variations and degradation due to inclement weather. The coil, also called exchanger, is, as appropriate, implanted above a reflector whose function is to orient the light rays towards the tubes, knowing that it can, on the contrary, extend under an absorber , usually in the form of a black colored plate. One of the problems with this type of sensor device is their ease of assembly and, consequently, their cost. Precisely, for the implementation of the exchanger, in other words heat recovery means in the bottom of the trunk, it is necessary to use appropriate bracing and fixing means, on the one hand limiting the phenomena heat transfer by heat bridge, and secondly meet the specific constraints to which such panels are subject. In particular, under the effect of the significant variations in temperatures that can be experienced by the materials composing these panels, it is necessary to take into account the phenomena of expansion which are not negligible and which, moreover, come to pose, in the long run, sealing problems. These bracing and fastening means are also, very often, at the origin of a multiplication of parts constituting the panel and which must be ensured, as the case may be, the manufacture or supply, and, well, sure, the editing. The present invention is able to meet these disadvantages of solar panels of the state of the art.

To this end, the invention relates to a solar collector device in the form of a panel defined by a trunk comprising a bottom and a peripheral rim, in the trunk being arranged means for recovering heat exchange fluid and an absorber and / or reflector of light rays, the trunk 35 of which is closed by a cover made of translucent material, in particular glass, characterized in that the cover is made integral with the trunk by means of a profile of peripheral mounting. According to a particular characteristic, said mounting profile is designed, on the one hand, adapted to fit peripherally on said cover, and on the other hand, has at least one designed fastening tongue able to extend externally to said cover. peripheral edge of the trunk. According to another characteristic, this fastening tab of said mounting profile defines a protective flap. According to another characteristic of the invention, in the bottom of the trunk are provided, by deformation or molding, stiffening imprints designed to define at least a support plane to at least one of the elements that receives the trunk. According to another feature of the invention, the absorber is, in combination with the stiffening footprints in the bottom of the trunk, means for holding in the latter, means for recovering heat exchange fluid.

According to another particularity of the invention, the indentations form at least one support plane internal to the trunk. According to a preferred embodiment, the indentations define a first support plane by means of heat recovery and a second support plane, offset internally to the trunk with respect to the first for the absorber and / or reflector. According to the invention again, the trunk is dressed, externally, with an insulating protective coat. More particularly, this protective coat defines a reflector adapted to reflect the heat radiation at least towards the interior of the trunk. According to another advantageous embodiment, the trunk is dressed externally with an insulating and / or stiffening material.

Other features, such as the objects and advantages of the present invention, will become apparent from the following description relating to non-limiting exemplary embodiments. The understanding of this description will be facilitated with reference to the accompanying drawings in which: FIG. 1 is a schematic, partial and sectional representation of a solar collector device according to a first embodiment, FIG. 2 is a view similar to FIG. 1 corresponding to a second embodiment of the solar collector device; FIG. 3 schematically and in plan view shows the bottom of the trunk of the solar collector device according to the invention; - Figure 4 is a view similar to Figure 3 showing the installation of heat recovery means in the form of a heat exchanger in the bottom of the trunk. - Figure 5 is a schematic representation in longitudinal section of a sensor device, illustrating a preferred method of fixing the latter on the roof.

The present invention is in the field of outdoor solar panels or thermal solar panels of roofs. As can be seen in the figures of the accompanying drawings, it relates more particularly to a solar collector device 1 defined by a trunk 2 comprising a trunk floor 3 bordered by a peripheral rim 4. In the trunk 2 are arranged heat recovery means 5 likely, for example, to take the form of a copper coil traversed by a coolant, which may be water or any other liquid. The box 2 also contains an absorber 11 and / or reflector 11 of light rays, which, depending on the case, is placed between the solar radiation and the heat recovery means 5, or after them in the path of the solar radiation, towards the bottom 3 of the chest 2.

As can be seen in FIG. 2, the box 2 is closed by a cover 22 made of a transparent and / or translucent plate 22A. This cover 22 protects the contents of the solar collector device 1 against the elements, and forms a barrier to the thermal energy stored inside this collector. Its good mounting on the trunk 2 of the solar collector 1 is essential for the longevity and the good performance of it. For this purpose, the cover 22 is advantageously made integral with the trunk 2 by means of a peripheral mounting profile 26. Thus, this mounting profile 26, preferably of synthetic material, adopts a U-shaped structure so that adapted to fit peripherally on said plate 22A, at a groove 29. Its maintenance and sealing can be provided through a bead of adhesive 27 deposited at the bottom of section 26. The latter still comprises at least one fastening tab 28 extending perpendicularly to the groove 29 and therefore to the plate 22A. Thus, this fastening tab 28 extends outwardly to the peripheral rim 4 in a design according to a first embodiment as shown in FIG. 1, or it is applied to an external rim 24 in a second embodiment. embodiment corresponding to Figure 2.

Advantageously, the fastening tab 28 of this mounting profile 26 may define a protective flap 25 capable of extending widely at the level of the roof on which the sensor device 1 is resting, while following the coating of this device. roofing, including tiles.

This protective flap 25 is, in a preferred embodiment, sufficiently long and flexible to flush and / or cover tiles of any type, size and shape. Its length can, in particular, allow to marry the undulation of the roof so as to cover an overlap area between tiles or successive roof panels.

This makes it possible, in particular to make a dam and to prevent dirt from infiltrating under this sensor device 1 and the roof, dirt which, in the end could otherwise be the cause of water infiltration.

In the design according to FIG. 1, the mounting profile 26 comprises an interlocking chute 30 which defines, substantially, on the one hand, the fastening tongue 28 extending externally to the peripheral rim 4 of the trunk 2 and a wing internal 31 of the section 26, parallel to said fixing tongue 28 and which, it is provided capable of extending along the peripheral rim 4, inside the trunk 2, or along a rim 15 of the absorber 11 already extending, on the inner side of the peripheral rim 4 of this box 2.

Finally, according to another feature of the present invention, this mounting section 26 of the cover 22 constitutes substantially assembly means of the components of the sensor device 1, more particularly of the box 2, of the absorber and / or reflector 11 , heat recovery means 5, trapped between the bottom 3 of the box 2 and this absorber 11 and, finally, the cover 22. Thus, after assembly through this mounting profile 26, the mechanical fixing means 32, such as screws or rivets, passing right through, the interlocking channel 30, nested on the peripheral edges 4 and 15, respectively, of the box 2 and the absorber and / or reflector 11, stiffen the 'together. It will be appreciated, of course, that such mechanical fastening means 32 may be replaced by a gluing operation.

In particular, the design of the mounting profile 26 to make the cover 22 integral with the trunk 2 is made so as to avoid any thermal bridge detrimental to the efficiency of the installation. As can be seen from this FIG. 1, if the casing 2 is clad externally by means of a protective casing 18, this casing comes, in an original manner, preferably to extend externally to the peripheral flange 4 and the mounting channel 30 of the section 26 is advantageously dimensioned so as to fit on all. This insulation from the outside makes it possible to improve the industrialization and to lower the cost of producing a solar collector 1 according to the invention. Returning to the embodiment of FIG. 2, the assembly of the sensor device 1 essentially results from the mounting of the absorber 11, to which the heat recovery means 5 are associated, in the box 2, mounting essentially made by gluing, and then laying, on the trunk 2, the cover 22 pre-equipped with its peripheral mounting profile 26. Again, it can be glued or welded, by melting material, on a plane d support 21.

As already mentioned above, mechanical fixing means 32, in particular screws or rivets, can complete the assembly by providing a connection between the fastening tab 28 and the peripheral rim 4 of the box 2. To achieve the objectives of FIG. Low weight and cost-effective manufacturing, the structure of the solar collector according to the invention is made of thin materials. The peripheral seal 26 thus plays an important role in the stiffening of the entire structure of the solar collector device 1, whose cover 22 is often one of the most rigid elements. The design of this seal is made in such a way as to allow the relative movements, under the effect in particular of the expansions, of the various constituents of the solar collector, by ensuring the maintenance of the cover 22 to the trunk 2, and the sealing, in all circumstances. . The invention is particularly attached to the rigidity of the assembly, even in the case of the particularly economical execution of chests 2 stamped sheet metal, so as to prevent any warping.

According to the invention, in the bottom 3 of the box 2 are provided, by deformation or molding, stiffening impressions 6 designed to define at least one support plane 7, 8 on which will be able to rest one to less of the elements that receives the chest 2, in this case a coil corresponding to the heat recovery means 5.

Thus, as illustrated in FIGS. 3 and 4, these indentations 6 may be in the form of longitudinal ribs 9 and / or transverse ribs 10, which, in the case of a sheet metal box, will result, preferentially, from a stamping operation. It is obvious that such impressions can adopt other forms of realization than that of ribs. In particular, these fingerprints can be defined by pads, for example. However, the present invention is not limited to such an embodiment of a sheet metal box. Indeed, it is quite possible to design it in a synthetic or composite material and formed by stamping or molding. Preferably, these indentations 6 define one or more support planes 7, 8, which are internal to the trunk 2. In the embodiment corresponding to FIG. 1, in which there is more particularly the floor 3 of trunk 2 illustrated in FIGS. 3 and 4, the transverse ribs 10 define a first support plane 7 which is situated at a lower level than the support plane 8 designed by the longitudinal ribs 9, this being seen from the internal side of the trunk 2. Thus, if the coil corresponding to FIGS. heat recovery means 5 is capable of resting on said transverse ribs 10, between longitudinal tubes 5A of said coil advantageously extend the longitudinal ribs 9 higher. Thus, on the latter can come to rest an absorber 11 in the form of a black plate, at least on its upper face 12. Here again, it will be understood that the coil can adopt different embodiments and that the invention could be limited to the form as shown in the drawings.

Note in this connection that on its lower side 13, this plate may optionally define a reflector. Moreover, the bottom 3 of the trunk 2 can also be designed to define such a reflector capable of reflecting the thermal radiation towards the tubes 5A of the coil. Advantageously, said indentations 6 in the bottom 3 of the trunk 2 and the absorber 11, contribute to the maintenance of the heat recovery means 5 in said trunk 2. Thus, in the embodiment corresponding to FIG. 1 the serpentine sandwiched between the support plane 7 defined by the transverse ribs 10 and the plate of the absorber 11 resting on the top of the longitudinal ribs 9 defining the support plane 8 is clearly seen. In the embodiment corresponding to Figure 2, the heat recovery means 5 are directly associated with the absorber 11. As it is visible, the corresponding plate is provided with indentations 14 in which are housed, preferentially sealed, the tubes 5a of the coil . According to another feature of the invention, the absorber 11 is secured at its periphery, the peripheral rim 4 bordering the trunk 2. Thus, the absorber 11 may itself be extended by a peripheral rim 15 in such a way as to extend internally to the peripheral rim 4 of said box 2, this with a view to a mechanical connection by screwing, riveting, etc., as illustrated in FIG. 1, or by gluing, as represented in FIG. FIG. 2. It will be noted, moreover, in this FIG. 2, that the absorber 11 can rest on the top of the cavities 6 in the bottom 3 of the box 2 by means of a bead 30 16 in the form of a flexible mastic, similar to the peripheral bonding, so as to absorb the phenomena of expansion mentioned in the introductory part. According to another feature of the invention, the volume delimited by the bottom 3 of the trunk 2 and the absorber 11, volume inside which take place, preferably, the heat recovery means 5, can be filled with a material 17 thermal energy accumulator. This material 17 may be in various forms, in particular that of a gel of suitable composition. According to the invention, the box 2 receives, externally, a protective envelope 18 of an insulating material, preferably reflective so as to reflect, in the direction of the box 2, the heat transfer radiation. By way of example, this protective envelope 18 may be in the form of a rotproof, preferably impervious, honeycomb material and having at least on its side facing the trunk 2 a reflective layer 19. As illustrated in FIG. Figure 2 corresponding to a second embodiment, under the trunk 2 may be applied an insulating material and / or ridigification, preferably in the form of a polyurethane foam shell 20. Again the trunk 2, thus isolated and / or stiffened, can receive a protective envelope as described above. This ensures a real protection in time of said insulating material 20. According to an advantageous method of manufacture, the sandwich: • box 2; • insulating material and / or stiffening 20; • and protective envelope 18; 25 is designed by a molding process. More precisely in a matrix of suitable shape is implanted the envelope, as well as the trunk, before it is injected between them polyurethane foam, the latter ensuring the adhesion between the elements. Of course, it is still conceivable to design this molding operation of the polyurethane foam shell 20 on the container 2, independently of the protective envelope 18. This is then put in place during an operation of independent dressing. The mechanical fixing means 32 which ensure the connection between the fastening tab 28 of the mounting profile 2905751 11 26 and the peripheral rim 4 of the box 2 contribute, advantageously, to holding the protective casing 18 in position in the event that it was not put in place during the molding operation of the rigidification shell 20 of insulating material 20. In this embodiment corresponding to FIG. 2, it is also noted that the rim 4 which Border peripherally, the trunk 2, is folded at its upper end, so as to form a bearing plane 21 to a cover 22.

Finally, in this embodiment of FIG. 2, the peripheral flange 4 results from a peripheral stiffening impression 6A designed by deformation or molding of the bottom 3 of the sensor device 1, so as to define an additional support plane 21 for the reception of the cover 22 closing said chest 2. It is noted, again, that beyond this support plane 21, this peripheral recess 6A defines an outer rim 24 delimiting, with the inner rim 4, a groove coming from somehow capping the insulating material and / or stiffening 20 on the peripheral perimeter of the sensor device 1. Figure 5 illustrates more particularly an example of laying on the roof of such a sensor device 1 according to the invention.

Thus, this sensor device 1 can be provided, on its upper 33 and lower 34 edges, with retaining straps 37, which can extend under the tiles 35 of the roof to be fixed, in particular by nailing, at the battens 36.

According to the question of equipping such straps 37 with the upper edge 33 or the lower edge 34 of the sensor device 1, these straps 37 are located on the external side of the flap 25 or are interposed between the flap and the flap 25. 2. As can be seen from the foregoing description, the sensor device according to the invention is particularly simple in design, yet capable of meeting high performance criteria. Although the invention has been described with respect to a particular embodiment, it will be understood that it is in no way limited thereto and that various modifications of shapes, materials and combinations thereof may be made. these various elements without departing from the scope and spirit of the invention.

Claims (15)

  1. Solar collector device (1) in the form of a panel defined by a trunk (2) having a bottom (3) and a peripheral rim (4), in the trunk (2) being arranged recovery means of the heat exchange medium (5) and an absorber and / or reflector (11) of light rays, whose trunk (2) is closed by a cover (22) of translucent material, in particular glass, characterized in that the cover (22) is secured to the trunk (2) via a peripheral mounting profile (26).   2. solar collector device (1) according to claim 1, characterized in that said mounting profile (26) is designed, on the one hand, adapted to engage peripherally on said cover (22), and on the other hand, comprises at least one fastening tongue (28) designed to extend externally to said peripheral edge (4) of the box (2).   3. solar collector device (1) according to claim 2, characterized in that said fastening tab (28) of said mounting profile (26) defines a protective flap (25) designed to extend over the coating of a roof on which comes to rest the sensor device 1, in particular on tiles, and to marry the shape to block the infiltration of dirt between said sensor device 1 and said roof and prevent water infiltration.   4. solar collector device (1) according to one of claims 1 to 3, characterized in that said mounting profile (26) is provided with a nesting channel (30).   5. Solar collector device (1) according to one of claims 1 to 4, characterized in that the mounting profile (26) of the cover (22) constitutes substantially assembly means of the components of said sensor device (1). ), more particularly of said box (2), said absorber (11), said heat recovery means (5) and said cover (22). 2905751 14   6. solar collector device (1) according to one of claims 1 to 5, characterized in that in said bottom (3) of said trunk (2) are formed by deformation or molding, stiffening impressions (6,6A ) adapted to define at least one support plane (7,8,21) to at least one of the elements that the trunk (2) receives.   7. solar collector device (1) according to claim 6, characterized in that said indentations (6, 6A) form at least one support plane (7,8) internal to the trunk (2). 10   8. solar collector device (1) according to one of claims 6 or 7, characterized in that said indentations (6, 6A) define a first support plane (7) to said heat recovery means (5) to exchange fluid and a second support plane (8), internally offset to said trunk (2) with respect to said first support plane (7), to the absorber and / or reflector (11).   9. solar collector device (1) according to one of claims 6 to 8, characterized in that said indentations (6) of the bottom (3) of the trunk (2) take the form of at least two series of ribs (9,10), preferably perpendicular to each other for the definition of support planes of distinct levels.   10. solar collector device (1) according to one of claims 6 to 9, characterized in that the imprints 25 (6,6A) of the trunk and the absorber and / or reflector (11) constitute means for maintaining the heat recovery means (5) in the trunk (2).   11. Solar collector device (1) according to one of the preceding claims, characterized in that said absorber and / or reflector (11) is secured at its periphery (15), the peripheral rim (4) of chest (2).   12. solar collector device (1) according to one of the preceding claims, characterized in that the volume defined by the bottom (3) of the trunk (2) and the absorber and / or reflector (11) is filled with a material (17) accumulating thermal energy. 2905751 15   13. Solar collector device (1) according to one of the preceding claims, characterized in that the housing (2) externally receives a protective envelope (18) of an insulating material. 5   14. Solar collector device (1) according to one of the preceding claims, characterized in that the trunk (2) comprises a peripheral recess (6A) forming a bearing plane (21) to said cover (22) in the form of a transparent or translucent plate (22A). 10   15. Solar collector device (1) according to one of the preceding claims, characterized in that under the trunk (2) is applied an insulation material and / or ridigification (20), preferably in the form of a polyurethane foam shell.