• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An inflatable concentrator (1) for concentrating radiation, in particular solar radiation, in an absorber attachable thereto, or method for producing the concentrator, with a shell (2) which is substantially tubular in an inflated operating state and which has a light-transmitting entrance window (3) for coupling having the solar radiation, and a reflector film (4) which separates the envelope (2) into at least two hollow chambers (5) and has a mirror surface (4 ') reflecting the coupled-in solar radiation in the direction of the absorber, the envelope (2) consisting of individual, via joint connections (11, 11 ', 17) interconnected film elements (14) is composed, wherein the sheath (2) in the uninflated state in a roll-up transport position can be arranged.
    公开号:AT511007A1
    申请号:T2093/2010
    申请日:2010-12-20
    公开日:2012-08-15
    发明作者:
    申请人:Heliovis Ag；
    IPC主号:
    专利说明:

    1
    The invention relates to an inflatable concentrator for bundling radiation, in particular solar radiation, in an absorber attachable thereto, having a sleeve substantially tubular in an inflated operating state, which has a translucent entrance window for coupling in the radiation, and one separating the envelope into at least two hollow chambers Reflective foil, which has a mirror surface reflecting the coupled radiation in the direction of the absorber.
    The invention further relates to a method for producing at least one inflatable concentrator for bundling radiation, in particular solar radiation, in an absorber attachable thereto, with a shell substantially cylindrical in an inflated operating position, which has a light-transmitting entrance window for coupling in the radiation, and one Sheath in at least two hollow chambers separating reflector foil, which has a the reflected radiation in the direction of the absorber mirror surface.
    In AT 505 075 Bl an inflatable solar collector in the form of a cylindrical tube is described which is transparent above a tube dividing the tube into two chambers reflector membrane. The reflector membrane mirrored on its upper side extends essentially diametrically along the entire tube. For the conversion of the solar energy, a longitudinally arranged absorber is provided above the reflector membrane, which absorber can be designed, for example, as a medium-flowtube; Alternatively, the absorber may be formed by photovoltaic elements. For terrestrial energy generation, the solar collector is placed in a favorable position to the sun and tracking the sun's path. The solar radiation is reflected by the reflector membrane in the direction of the absorber, whereby the medium in the absorber is strongly heated, which is used for energy.
    In principle, inflatable solar panels represent a very promising technology for the utilization of solar energy and in future can make a significant contribution to the supply of renewable energy. In practice, however, the complex and cost-intensive production has proved to be a problematic concentrator, which precludes a greater spread of the inflatable concentrators. The concentrators were therefore usually made as individual pieces of large-scale films that are assembled with considerable effort to the finished cushion. As a result, it would be desirable to enable mass production of such concentrators, thereby reducing unit cost. Another disadvantage of the known embodiments of inflatable solar panels, but also conventional Paraboirinnenkraftwerke of mirror and steel structures, is that the structure is usually possible only at the place of use, since the dimensions of larger plants, which can reach a length of for example more than 50 m, complicate a transport; However, on-site assembly requires trained personnel who are not available at many locations. On the other hand, when transporting the finished concentrator, high transport costs are incurred due to the considerable space requirement - even in the deflated state - which keeps the unit price of the concentrators high.
    Accordingly, the object of the present invention is to provide a cost-manufacturable, reliably withstand the loads in continuous use inflatable concentrator of the type mentioned, which is transportable in a particularly space-saving arrangement.
    This object is achieved in the inflatable concentrator of the type mentioned in that the shell is composed of individual interconnected by joining joints foil elements, wherein the shell can be arranged in the uninflated state in a roll-up transport position.
    Accordingly, the concentrator shell of individual or separate. Foil elements constructed, which are interconnected via joint connections. The inventive structure of the concentrator sleeve of joined film elements has the advantage over a one-level version of the various films of the shell that comparatively small Foiestecke can be used, which is a production of the shell in basically known manufacturing equipment for the processing of 3 (plastic) film webs allow or make the manufacturing process at least much easier. In particular, mass production of the casing also enables the cost-efficient production of larger casings, which hitherto could only be produced in one-off production; at least the unit costs can be considerably reduced, which should favor the spread of the inflatable concentrators. The concentrators preferably have an overall length of more than 20 meters, in particular more than 50 meters, and a diameter of more than 3 meters, in particular more than 5 meters. The film elements of the shell are preferably made of suitable plastic materials. The use of joint connections between individual film elements of the casing also makes it possible to arrange the casing in the deflated or unfilled state in a substantially wrinkle-free (or turn-up or crease-free) transport position in which the various films of the casing are stacked as successive layers. Thus, the joint connections of the envelope can replace fold, fold or fold lines which would inevitably occur in the case of a one-piece embodiment of the foils, in particular at the longitudinal edges of the envelope. However, the fold lines could cause crumpling of the wrapper when attempting to wrap the wrapper. Thus, a space-saving, compact winding the envelope would not be possible. In contrast, the composite of joined film elements envelope for transport ln particularly space-saving manner from the substantially wrinkle-free transport position on a roll, sleeve or the like. Be rolled up. In the preferred use of joint connections to - based on the deflated state - longitudinal edges of the shell, a particularly compact arrangement of the shell when winding for transport can be achieved. In view of the low piecing requirement of the wrapped casing, the transport costs can be considerably reduced as a result, whereby the SLückkosten automatically decrease. In addition, individual joint connections can define the edges of the shell in the deflated state, whereby a positioning aid when winding the envelope is provided with a predetermined width. Finally, the joints can prevent damage caused by kinks, etc. damage to the shell. As will be explained in more detail in connection with the associated method, the joining compounds also have considerable advantages for the production process, since the individual film elements in the production line can be joined in a substantially planar position relative to the respective films, wherein a production-technically complex Turn over the film is not mandatory. After the space-saving transport of the shell in the rolled up state, the shell can be placed at the site; then the absorber, which is usually transported separately from the shell, can be used. To operate the concentrator, the hollow chambers of the shell are filled with air (or other suitable gas). The concentrator is thus designed self-supporting, so that can be dispensed with elaborate Tragagevorrichtun gene. This can be compared to a conventional solar concentrator achieve a much lower weight, which naturally has a favorable effect on the manufacturing or transport costs.
    In order to be able to arrange the envelope in a transport position which can be rolled up in a particularly space-saving manner, it is favorable if at least one joining connection extends substantially over the entire length of the envelope. Accordingly, the joint connection extending in the longitudinal direction of the concentrator in the deflated state of the shell can in particular define a longitudinal edge of the shell, on which two layers of foil elements arranged one above the other meet. Thus, the longitudinal-side joint in the. unexpanded condition of the shell to replace a wrinkle unfavorable in terms of crumpling of the shell when rolling, which would arise in a one-level execution of the slides by longitudinal folding the episode. The longitudinal joining compound also has the advantage that the shell can be opened quickly and easily, for example, to use the absorber in the shell.
    A preferred embodiment of the particularly generally cylindrical concentrator provides that the casing has a bottom film, which is connected at opposite longitudinal edges in each case via a joint connection with a lower side wall film. The bottom foil is preferably formed by a plastic film. In a particularly favorable embodiment, the longitudinal joining joints between the bottom foil which faces a bottom surface during operation and the bottom side wall foil in the deflated state of the shell define opposite longitudinal edges of the shell. The bottom foil and the lower side wall foil are therefore arranged one above the other in the transport position as substantially planar layers. The longitudinal joining joints replace the unfolded state of the shell longitudinal folding or Umschlaglinien which would necessarily exist in a one-piece design of the bottom foil with the lower side wall film. As already mentioned, the casing can thus be rolled up for transport substantially without crumpling to save space.
    In the case of the concentrator according to the invention, it is furthermore advantageous if the casing has an upper side wall film which adjoins the lower side wall film and which is connected at opposite longitudinal edges to a cover film via a joining connection. Accordingly, the lower and the upper side wall film relative to the inflated operating position of the concentrator form the side walls of the concentrator. The upper or lower side wall film is preferably made of a plastic. In the deflated state of the envelope, the joint connections extending in the longitudinal direction of the envelope define defined layers through the lower and upper side wall films, respectively, in order to replace folding lines at the longitudinal edges, which would hinder the rolling up of the concentrator.
    For coupling the solar radiation into the concentrator, it is favorable if the cover foil composed in particular of several, preferably four, foil elements has a recess closed with a transparent foil element for forming the entrance window. In order to couple the solar radiation into the envelope with high efficiency, it is favorable if the entrance window is formed by a highly transparent film element, in particular of ethylene-tetrafluoroethylene (ETFE). This material is characterized by its excellent weather resistance and a pronounced self-cleaning effect.
    In a particularly preferred embodiment, the cover sheet consists of four film elements. Consequently, the cover sheet has two film pieces elongated in the longitudinal direction of the sleeve, which are arranged at a distance from each other which defines the width of the entrance window; In addition, in this embodiment, two end portions of the elongated film at both end regions transverse connecting end portions are provided, whose distance from one another determines the length of the entrance window. As a result, the material waste produced during cutting of the recess can be avoided or at least considerably reduced in the production of the cover film.
    To form the mirror surface, which reflects the coupled-in solar radiation in the direction of the absorber during operation, it is advantageous if the lower side wall foil composed in each case in particular of several, preferably four, foil elements and the upper side wall foil each have a recess closed by the reflector foil. During operation of the concentrator, a curvature of the reflector film is set by way of a pressure difference between the hollow chambers, which causes a suitable focusing of the coupled-in solar radiation into the absorber. Thus, by changing the pressure difference, the focus of the focused beams can be adjusted accurately. The reflector film is preferably formed as a mirrored plastic film. According to the multi-part design of the cover film, it is preferable to avoid waste material when the upper or lower side wall film consists in particular of four film elements which define the recess closed by the reflector film.
    In order to be able to open the concentrator in a particularly simple manner when required, in particular for carrying out assembly or maintenance work, it is advantageous if at least one joint connection, in particular the joint connection between the bottom foil and the lower side wall foil or between the upper side wall foil and the cover sheet, is arranged on with respect to the outer shell connecting surfaces of the film elements. Accordingly, at least one of the extending in the longitudinal direction of the sheath joints is accessible from the outside; Thus, the external joint connection can be quickly and easily separated if necessary and then restored. In addition, arranged outside the Hohlkämmern connecting surfaces have the advantage that particularly stable joints can be attached, since the connecting surfaces on both sides, i. from above and below, are accessible.
    In order to be able to withstand the loads occurring during operation of the inflatable concentrator, it is expedient for the joint connection to have a sewing seam in the connecting region of the film elements. The sewing seam is preferably attached to the outer joining surfaces of the respective film elements to be joined.
    For the airtight sealing of the connection region, it is advantageous if the joint connection has at least one weld seam between meeting surfaces of the foil elements. Appropriately, a plurality of welds are provided on the individual connection surfaces, which are formed in particular by means of an ultrasonic welding process.
    In an alternative preferred embodiment, an adhesive-seam connection is provided as a joining connection between the Folieneiementen having an adhesive between the edge verb.i ndungsf the film elements arranged adhesive layer and guided through the film elements and the adhesive layer seam. In order to prevent a creeping leakage of air from the envelope of the concentrator, it is advantageous if the adhesive layer between the connecting surfaces of the foil elements is connected substantially airtight with a seam attached in the uncured state of the adhesive layer. The attachment of the seam in the uncured state of the adhesive layer has the advantage that the adhesive layer snugly fits snugly against the seam. Thus, the airtight closure of the ilüile can be ensured. Furthermore, the sewing seam can be sealed by means of a plastic strip attached in particular on the outside in the area of protruding sections of the sewing seam.
    As a further preferred joining connection between the film elements, an airtight zipper is provided. Air-tight zips are basically known in the art; On the other hand, in the case of the concentrator according to the invention, a particularly advantageous application results if the hermetic zipper is used as a longitudinal joining connection between external connecting points, since this considerably facilitates the opening of the concentrator.
    For closing the particular tubular concentrator, it is advantageous if the openings formed at the end-side end portions of the shell are hermetically sealed with matching end pieces.
    With regard to an expedient production of the concentrator, it is advantageous if the end pieces are formed by continuations of film elements of the envelope, which are connected to each other by means of at least one transverse to the longitudinal direction of the shell joint connection.
    In order to achieve a transport position which can be rolled up in the deflated state of the casing, it is advantageous if in each case a joint connection extending transversely to the longitudinal direction of the casing is provided between the upper side wall film and the cover film or between the lower side wall film and the bottom film. The transverse joining connections between the upper side wall foil and the cover foil or between the lower side wall foil and the bottom foil are preferably arranged substantially in the same horizontal plane as the joining connections extending in the longitudinal direction of the shell between the corresponding foil elements of the shell. As a result, caused by the tails stresses in the shell can be significantly reduced. Thus, the desired geometry of the shell in the inflated operating condition is hardly affected by the end pieces. In the deflated state of the envelope, the transverse joining connections, together with the associated 'substantially' arranged on the same plane, bound substantially planar layers, which advantageously have no or With. comparatively low).
    In order to improve the three-dimensional curvature of the end pieces in the inflated state of the shell, it is favorable if the end pieces are formed at least partially from an elastically deformable material. This embodiment makes it possible to keep the influence of the end pieces on the particular cylindrical geometry of the shell low.
    The problem underlying the invention is also achieved by a method of the initially mentioned type, in which individual film elements are produced from webs, which are assembled in a substantially planar position via joint connections to the finished shell, which can be rolled up in the uninflated state in a transport position.
    Accordingly, material webs are conveyed in the production plant, from which individual film elements are produced, which are joined in a substantially planar position. This has the manufacturing advantage that lateral folding of the foils to be joined can be avoided; the folding of the film along a fold line would not be possible or only with great effort, in particular in a thin-walled version of the joined films. To transport the concentrator, the envelope can be rolled up in the transport position to be transported in this space-saving arrangement to the place of use; the absorber or receiver, which usually consists of a stiff and therefore non-rollable material, is transported separately from the shell and connected only at the place of use with the concentrator shell.
    To transport the shell, it is particularly advantageous if the finished shell is rolled up in the transport position on a roll. When rolled up, the various films are in a layered, substantially non-jettable arrangement. Thus, advantageously, a "roll-to-roll" production can be made, in which the webs required to make the wrapper are supplied on roll and processed in the factory into the finished wrapper for transport to a suitable roll is wound up.
    In order to reduce the manufacturing costs of the concentrator, it is further favorable if, for the continuous production of a plurality of envelopes, individual film elements are produced from endless webs which are cut off at fixed intervals. Thus, the inflatable concentrators can be produced in a continuous continuous production, so that the unit costs significantly reduced compared to a one-off production or small series. The manufacturing plant used for the series production of concentrators in this case has in the prior art per se known conveying or processing devices which provide the continuous webs, together as required or apart and join together at appropriate locations. At predetermined time intervals, the finished envelope is severed to continue fabrication of the adjoining envelope.
    To avoid waste material, it is particularly advantageous if a film, in particular a lower side wall film, upper side wall film or cover film, the envelope is produced from two elongated material webs which are connected at a fixed distance via end portions, wherein a recess for the reflector film or a recess for the transparent film is formed. For the production of films with a central recess therefore individual film elements are produced, which are assembled in the plant, brought together and connected to each other. In contrast to an embodiment in which the recess for the reflector film is cut from a one-piece film element, thus hardly any material waste, since the elongated material webs are connected at suitable intervals over the end portions such that the recess with the desired shape for the subsequent inserted reflector foil is formed. In addition, this embodiment has the advantage that the comparatively narrow material webs can be handled much easier in the manufacturing plant, whereby the production costs can be further reduced.
    The invention will be further explained with reference to an embodiment shown in the drawings, to which it should not be limited, however.
    In detail, in the drawings:
    Figure 1 is a schaubiidliche view of a section of an inflatable concentrator for the bundling of solar radiation according to a first embodiment of the invention, with a cylindrical shell, which is composed of individual interconnected by joining joints foil elements.
    FIG. 2 shows detail A framed in FIG. 1 with a rectangle in the enlarged scale; FIG.
    FIG. 3 shows the detail B framed in FIG. 2 with a rectangle in the enlarged scale; FIG.
    FIG. 4 is an exploded view of the various foils of the inflatable concentrator of FIGS. 1 to 3; FIG.
    5a shows a schematic cross-sectional view of the concentrator pad according to FIGS. 1 to 4 for illustrating the joining connections between the individual foil elements;
    Fig. 5b is a cross-sectional view corresponding to Fig. 5a, but with individual foils being folded laterally;
    6a shows a section of a lower side wall film of the casing, which is composed of four film elements which delimit a recess for a reflector film;
    Fig. 6b is a view corresponding to Fig. 6a of an alternative embodiment of the lower side wall foil;
    Figure 7 is a side view of the concentrator, which is hermetically sealed at end-side end portions of the shell with end pieces.
    8 shows a diagrammatic overall view of the concentrator according to FIG. 7, wherein joining connections running transversely to the longitudinal direction of the envelope can be seen on the end pieces of the huides;
    9 schematically shows a preferred embodiment of the joint connection as a combined seam / weld joint;
    Fig. 10 is a view corresponding to Fig. 9, but with a glue-seam connection;
    11 schematically shows a detail of the production plant for producing the concentrator, wherein material webs are joined in a substantially planar position; and
    Fig. 12 shows schematically the series production of the films with central recess, which is formed by periodically inserting end portions.
    Fig. 1 shows an inflatable concentrator 1 for focusing the solar radiation in order to convert the radiation energy of the sun into usable energy. The concentrator 1 has an elongated, substantially cylindrical or tubular casing 2, which has a light-permeable inlet window 3 for coupling in the solar radiation. The sheath 2 is subdivided by a reflector film 4 into at least two separate hollow chambers 5, which are each hermetically sealed. The reflector film 4 has a mirror surface 4 ', which bundles the coupled-in solar radiation in the direction of an absorber (not shown in the figures). The absorber or the solar panel is located in the focus area of the mirror surface 4 'within the upper hollow chamber 5 of the shell 2. As the absorber, in particular, a medium-flow tube or a photovoltaic element may be provided. Concentrator 1 can thus be used both for concentrated photovoltaics (CPV = Concentrated Photovoltaics) and for concentrated solar thermal energy (CSP ^ Thermal Concentrated Solar Power). In operation of the concentrator 1, a pressure difference is formed in the hollow chambers 5, whereby the reflector film 4 is curved uniformly concave, so that the coupled solar radiation is focused by the mirror surface 4 'in the absorber. Since the shell 2 is designed self-supporting with compressed air in the Hohj-chambers 5, no elaborate carrying devices are necessary. Thus, a considerably lower weight can be achieved compared to a conventional solar concentrator.
    The shell 2 has a base film 6, which faces a bottom surface of the deployment site 13 during operation of the concentrator 1. In addition, a (not shown in the figures) tracking device may be provided to track the shell 2 the sun. The side walls of the shell 2 (based on the inflated operating position of the concentrator 1) are formed by a lower side wall film 7 and an upper side wall film 8. The lower side wall film 7 and the upper side wall film 8 have substantially congruent recesses 7 'and 8' (cf., Fig. 4), which are closed by the reflector film 4. The upper side wall film 8 is connected to a cover film 9, which has a recess 9 'which is closed by a transparent film element 10 to form the entrance window 3 (cf., FIG. 4).
    Such inflatable solar panels have been made only as individual pieces, as the processing of large-scale films for the formation of the shell 2 has proven to be very difficult. In addition, high transport costs, since the concentrators can have very large dimensions with a length of more than 20 m, in particular more than 50 m. Even when not filled with air state, the shell 2 of the concentrator 1 thus takes up a lot of space, so that the transport of known concentrators 1 of this type was previously possible only with great effort and high costs.
    In order to improve the concentrator 1 with respect to these problems, the casing 2 has individual film elements which are connected to one another via joining connections 11. The shell 2 is in the deflated state in a substantially falt.-Imienfrei layered, roll-up transport position can be arranged. The concentrator 1 can be rolled up or wound up in this transport position to save space, so that the transport to the place of use is simple and cost-effective. r d.
    Fig. 2 shows a detailed view of the shell 2 in the region of a side wall of the shell 2. The bottom sheet 6 is at its two longitudinal edges, which are located on the opposite sides of the shell 2, respectively over a longitudinal direction 2 '(see.
    Fig. 7) of the shell 2 extending joint connection 11 'connected to the lower side wall film 7. The bottom foil 6 and the bottom foil are the same as those of the bottom foil. "*" * * * * * * «« "K" · *% * ·· «» t «*« * · | t ·· * * * * · «« »- 14 * -...
    For this purpose, side wall foil 7 have connecting surfaces 12 which are formed by longitudinal edges of the bottom foil 6 or the lower side wall foil 7 that are angled outwards in the manner of a flange. The upper side wall foil 8 and the cover foil 9 are correspondingly connected to one another on both sides of the shell 2 via joining connections 11 'extending in the longitudinal direction 2' of the shell 2. As connecting surfaces 12 are here also flange outwardly angled longitudinal edges, in this case the upper side wall film 8 and cover sheet 9, provided. In this case, the joining connections 11 'extend essentially over the entire length of the concentrator 1. In order to carry out assembly or maintenance work, the outer joint connections 11' can be separated in a simple manner, since the connection surfaces 12 are accessible from outside; the reclosure of the sheath 2 is equally possible on the outer connecting surfaces 12. In addition, the externally arranged joint connections 11 'have the advantage that they are accessible from both sides, which allows the use of particularly stable joint connections 11.
    As can be seen from the detailed view according to FIG. 3, the lower side wall film 7, the upper side wall film 8 and the reflector folie 4 are connected to each other via a longitudinally extending 2 'of the shell 2 joining connection 11', which between randandsitigen, with respect to the shell inside connecting surfaces 12 is arranged. In the preferred embodiment shown, the longitudinal edges of the reflector sheet 4 are connected at both sides of the sleeve 2 to a flange-inwardly angled longitudinal edge of the upper side wall panel 8, which in turn adjoin a longitudinal flange-inwardly projecting longitudinally of the lower side wall sheet 7 is appropriate. Of course, another sequence would be conceivable here.
    Fig. 4 shows an exploded view of the various films of Hü.l 1 o 7, wherein from left to right, the cover sheet 9, the Lintri ttsfenster 3 ausbi.ldende transparent film 10, di.e upper side wall fo Iie 8, the mirror foil 4, the lower side wall foil 7 and the bottom foil 6 are visible. In addition, in Fig. 4 associated connection surfaces 12 of the joint connections 11 are marked. Specifically, in Fig. 4, " A " the connecting surfaces 12 shown in particular in FIG. 3 can be interposed between the connecting surfaces 12 between, for example, two. See top side wall foil 8, reflector foil 4 and bottom side wall foil 7 denoted; the connection of lower sidewall film 7 and bottom film 6 is indicated by " B "designated; &Quot; C " denotes the mating connecting surfaces 12 between the cover sheet 9 and the transparent film 10; Finally, " D " the corresponding connecting surfaces 12 of cover sheet 9 and upper side wall film. 8
    Fig. 5a shows a schematic cross-sectional view of the sheath 2 shown in FIGS. 1 to 4, from which the arrangement of the (only schematically drawn) joint connections 11 can be seen. The longitudinal joining connections 11 'between the base film 6 and the lower side wall film 7 or between the upper side wall film 8 and the cover film 9 replace folding or envelope lines, so that the shell 2 is in the deflated state as a sequence of substantially planar layers. This allows on the one hand a compact rolling up of the shell 2; In addition, significant advantages can be achieved in production, as will be explained in more detail below.
    For comparison, a less preferred embodiment of the Konzer.trator Hul.le 2 is shown in Fig. 5b, in which the lower half of the shell 2 at the longitudinal edges envelope or fold lines 13 is formed, which is a compact winding the shell 2 in prevent deflated condition or at least make it much more difficult.
    FIGS. 6a and 6b each show a preferred embodiment of the lower side wall film 7. In order to minimize the material waste in the production of the casing 2, the films are provided with a central recess for the reflector film 4 and for the transparent film 10, i. the cover sheet 9, the lower side wall film 7 and the upper Seitenwandfoiie 8, composed of several, suitably four, Folieneiementen. This is illustrated in Figures 6a, 6b using the example of the lower Seitenwar.dfolie 7; the cover sheet 9 and the upper Seitenwandf cl.i e 8 can be constructed accordingly.
    According to FIG. 6 a, the lower side wall film 7 has two elongate film pieces 14 extending essentially over the entire length of the casing 2, which are connected to one another at their two longitudinal end regions via end sections 15 arranged transversely thereto. The spacing of the elongate pieces of film 14 determines the width of the mirror surface 4 '. The length of the mirror surface 4 'is determined by the distance between the two end portions 15 in the longitudinal direction 2' of the shell 2. The inner edges of the end portions 15 have an arcuately curved course. Thus, the recess 7 'is not formed by cutting a one-piece film, but formed as a gap between the film pieces 14 and the end portions 15, whereby the material waste can be significantly reduced.
    FIG. 6 b shows a slightly modified embodiment of the lower side wall foil 7, in which the end sections 15 extend over the entire width of the lower side wall foil 7.
    7 and 8 each show an overall view of the tubular concentrator 1, which is hermetically sealed at front end portions of the shell 2 with matching end pieces 16. The end pieces 16 are formed by continuations of Fo Liene.Leinenten the shell 2, which are connected to each other at both ends of the shell 2 via two transversely to the longitudinal direction 2 'of the shell 2 extending joint 17. The transverse joint connections 17 are provided between the upper side wall film 8 and the cover film 9 or between the lower side wall film 7 and the bottom film 6. As can be seen in particular from FIG. 7, the transverse joint connections 17 are each arranged approximately in the center plane of the upper or lower half of the shell 2. Moreover, the transverse joining connections 17 are substantially in the same plane as the joining connections 11 'extending in the longitudinal direction 2' of the envelope between the corresponding foil elements, i. between upper side wall film 8 and cover film 9 and between lower side wall film 7 and bottom film 6, respectively. This version has the. Advantage that the end-side closure of the shell 2 with the end pieces 16 only slight influence on the geometry of the shell 2 takes in the inflated operating condition. As can be seen from FIG. 7, the shape of the sheath 17 2 in the region of the end pieces 16 differs only in a short section from the tubular or cylindrical geometry of the remaining sections of the sheath 2. Thus, a substantially constant curvature of the reflector film 4 along the sheath 2 can be achieved. This has the advantage that the focusing of the solar radiation in the absorber takes place essentially over the entire length of the sheath 2 in a precisely defined focal line.
    9 shows a particularly preferred embodiment of the joint connections 11, which is illustrated by way of example with reference to the connection between upper side wall film 8, lower side wall film 7 and reflector film 4. Accordingly, the joining connection 11 has a sewing seam 20 in the connecting region of the film elements. In the illustrated embodiment, the joint 11 further comprises two welds 21 between mating connecting surfaces 12 of the film elements. For the airtight closure of the shell 2, as shown in Fig. 9, the upper side wall film 8 is bent around the longitudinal edge of the lower side wall film 7. F.ig. 10 shows an alternative embodiment of the joint 11, which is designed as an adhesive-seam connection 22, which connects edge-side joining surfaces 12 of the film elements. The adhesive-seam connection 22 has adhesive layers 23 and a seam 11 threaded through the connection seam 20. For the airtight sealing of the connecting region, a plastic strip 24 is additionally provided on the outside in the region of projecting sections of the sewing seam 20. Alternatively, it may be provided in an embodiment (not shown in the figures) that the adhesive layer between the joining surfaces of the foil elements is connected substantially airtight to an adhesive layer in the uncured state of the adhesive layer, whereby the adhesive layer engages tightly the sewing seam 20 applies, and thus prevents a LulLaustritt.
    The method according to the invention for producing the concentrator 1 shown in FIGS. 1 to 10 is explained in more detail below, in which individual film elements are produced from material webs, which are assembled via joining connections 11 to the finished casing 2. An essential aspect of the method according to the invention is also that the film elements of the shell 2 are joined in a substantially planar position, whereby a production-technically complex lateral folding of the films can be avoided.
    For this purpose, the production plant for series production of the concentrators 1 has a wide variety of unwinding devices, conveying devices, pressure devices, control devices, etc., which are basically known in the prior art, and thus will be explained in more detail below only if they are of particular importance for the invention.
    Fig. 11 shows schematically that part of the manufacturing plant in which the bottom foil 6 is connected to the side wall foils 7, 8 or reflector foil 4 previously joined in another station of the plant. As can be seen from FIG. 11, a conveyor 30 is provided for conveying an endless web 31, from which base films 6 are produced in series for concentrators 1 produced in succession. Subsequent to the conveyor 30, a web edge control is provided, which serves for aligning the endless web 31 and for correcting any web running error. In this case, by means of an infrared sensor 32, the passing edge of the film is detected, compared with a desired value or reference value and accurately positioned again by means of a pivotable turning bar, which actuates the control element of the control. The endless web 31 is kwa t over a Um. ze 33 diverted. Subsequently, the endless web 31 is guided between two pressure rollers 34. In the station of the system shown an endless web 35 is also required, which consists of previously joined end] osbahnen, which form the side wall films 7, 8 and the re reflector film 4. The endless web 35 is in front of the. Reaching the nip rollers 34 via c.ine adhesive nozzle 36 with. an adhesive layer provided over the. Contact pressure of the Anpresswal-zen 34 between the Endiosbahnen to be joined 31, 35 is solidified. Subsequently, the bonded continuous webs 31, 35 of a sewing unit 37 is supplied, which operates according to a known technique with upper and lower thread. To complete the longitudinal joining connection 11 ', the sewing unit 37 generates a continuous longitudinal seam 20 between the endless web 31 and the
    Continuous web 35. In an alternative embodiment (not shown), a welding apparatus is provided instead of the adhesive nozzle 36, which generates suitable weld seams 21 between successive connecting surfaces 12 of the continuous webs 31, 35, which are then penetrated by a sewing seam 20. The arrangement of the welds is shown in FIG. 9 in connection with the connection of lower 7 and upper side wall foil 8 or mirror foil 4.
    As can be seen from FIG. 11, the continuous webs 31, 35 can be joined in a substantially planar, superposed position, so that no longitudinal folding of the endless webs 31, 35 is necessary. This represents, in particular for thin-walled embodiments of the plastic films - in which a handling would not or only with great difficulty possible - a considerable improvement of the production process. Another advantage is that the longitudinal joints 11 'are arranged outside along the casing 2 and thus Both sides are accessible, which allows the use of the described stable joint connections 11 with sewing seam 20.
    The production of the remaining joint connections 11 shown in FIGS. 1 to 10 follows-apart from certain adaptations to the different shaping of the respective film elements, etc.-to the example discussed above, so that reference may be made to the above explanations in order to avoid repetition ,
    12 schematically shows the continuous production of lower side wall film 7 (left), upper side wall film 8 (center) and cover film 9 (right), for two casings 2 produced in succession. The production direction is shown in FIG located. As schematically shown in Fig. 12, the lower side wall 7, upper side wall sheet 8 and cover 9 for forming the central recess 7 ', 8', 9 'are each composed of four foliate elements, two elongated film pieces 14 and two transverse thereto Hnd sections 15, joined together. To produce the elongated, longitudinal-side pieces of film 14 continuous webs 39 are continuously conveyed at a distance to each other, which the 20th
    Width of the recess 7 ', 8', 9 'determines. The continuous webs 39 may have previously been produced by dividing a single continuous webs. Depending on the desired length of the concentrator 1, the end portions 15 are used at appropriate intervals, which are manufactured in a secondary line. The end portions 15 are connected via suitable joining connections 11, in particular welded joints, with the film pieces 14. The welded joints can be produced, for example, in the ultrasonic welding method between an anvil and a sonotrode (not shown). The recesses 7 ', 8', 9 'are thus bounded on all sides by the respective film elements (pieces of film 14 and end portions 15) in order to achieve material savings in relation to a cutting out of the recesses 7', 8 ', 9'.
    To complete the shell 2, this is closed at the two ends and separated from the subsequent shell 2. For this purpose, in particular a separation welding method is suitable, with which the operations "separating the casings 2 "," closing the hollow chambers 5 " and "sealing the envelope 2 " can be performed in a single step. Due to the comparatively low loads which occur in the region of the end pieces 16 of the casing 2, a simple weld can be used as the joint 11. Alternatively, an adhesive-seam connection 22 could be used, for which, however, it would be necessary to separate the finished casing 2 from the subsequent casing 2 before the end pieces 16 can be sewn.
    权利要求:
    Claims (17)
    [1]


    · »« * ·· «· 41 4 4 4 t I« -4 · · · 4 # «* 4tl | 1. Inflatable concentrator (1) for bundling radiation, in particular solar radiation, in an absorber attachable thereto, with a shell (2) which is substantially tubular in an inflated operating state and which has a light-transmitting entrance window (3) for coupling in the Having radiation, and one of the shell (2) in at least two hollow chambers (5) separating the reflector film (4) having a the coupled radiation in the direction of the absorber reflecting mirror surface (4 '), characterized in that the sheath (2) individual, via joint connections (11, 11 ', 17) interconnected film elements is composed, wherein the sheath (2) can be arranged in the uninflated state in a roll-up transport position.
    [2]
    2. Inflatable concentrator (1) according to one of claims 2 to 5, characterized in that at least one joint connection (11 ') extends substantially over the entire length of the sheath (2).
    [3]
    3. Inflatable concentrator (1) according to claim 1, characterized in that the sheath (2) has a bottom foil (6), which is connected at opposite longitudinal edges in each case via a joint connection (11 ') with a lower side wall film (7).
    [4]
    4. Inflatable concentrator (1) according to claim 3, characterized in that the sheath (2) to the lower side wall film (7) adjoining upper side wall film (8), at opposite longitudinal edges in each case via a joint connection (11 ') with a Cover film (9) is connected.
    [5]
    5. Inflatable concentrator (1) according to claim 4, characterized in that the in particular of several, preferably four, foil elements composite cover sheet (9) for forming the entrance window (3) with a transparent Fo-lieneiement (10) closed recess (91 ) having.
    [6]
    6. Inflatable concentrator (1) according to claim 4 or 5, characterized in that the respectively composed in particular of a plurality, preferably four, foil elements lower (7) or upper side wall foil (8) each have a Having by the reflector film (4} closed recess (7 ') or (8')).
    [7]
    7. Inflatable concentrator (1) according to one of claims 1 to 6, characterized in that at least one joint connection (11; 11 ', 17), in particular the joint connection (11') between the bottom foil (6) and the lower side wall foil (7 ) or between the upper side wall film (8) and the cover film (9), with respect to the sheath (2) outer connecting surfaces (12) of the film elements is arranged.
    [8]
    8. Inflatable concentrator (1) according to one of claims 1 to 7, characterized in that the joint connection (11, 11 ', 17) has a sewing seam (20) in the connecting region of the film elements.
    [9]
    9. Inflatable concentrator (1) according to claim 8, characterized in that the joint connection (11, 11 ', 17) has at least one weld seam (21) between meeting surfaces (12) of the foil elements.
    [10]
    10. Inflatable concentrator (1) according to one of claims 1 to 7, characterized in that as the joint connection (11; 11 ', 17) between the Foiieneiementen an airtight zipper is provided.
    [11]
    11. Inflatable concentrator (1) according to one of claims 1 to 10, characterized in that d.i e e at the end-side end portions of the sheath (2) formed openings with matching end pieces (16) are hermetically sealed.
    [12]
    12. An inflatable concentrator (1) according to claim 11, characterized in that the end pieces (16) are formed by continuations of Foiieneiementen the sheath (2) by means of at least one transverse to the longitudinal direction (2 ') of the sheath (2) extending joint connection (17) are interconnected.
    [13]
    13. An inflatable concentrator (1) according to claim 12, characterized in that there is a joining connection (17) running transversely to the longitudinal direction (2 ') of the envelope (2) between the upper side wall film (8 ) and the cover film (9) or between the lower side wall film (7) and the bottom film (6) is provided
    [14]
    14. Inflatable concentrator (1) according to any one of claims 11 to 13, characterized in that the end pieces (16) are at least partially formed of an elastically deformable material.
    [15]
    15. A method for producing at least one inflatable concentrator (1) for bundling radiation, in particular solar radiation, in an absorber attachable thereto, with a substantially cylindrical shell in an inflated operating position (2) having a translucent entrance window (3) for coupling the Having radiation, and one the shell (2) in at least two hollow chambers (5) separating reflector film (4) having a coupled radiation in the direction of the absorber mirror surface (4 '), characterized in that individual film elements are produced from material webs which are assembled in a substantially planar position via joint connections (11, 11 ', 17) to the finished casing (2), which in the deflated state can be rolled up in a transport position.
    [16]
    16. The method according to claim 15, characterized in that the finished casing (2) is rolled up in the transport position on a roll.
    [17]
    17. The method according to claim 15 or 16, characterized in that for the continuous production of a plurality of envelopes (2) individual film elements of continuous webs (31, 35, 39) are generated, which are separated at predetermined intervals. J8. Method according to one of claims 15 to 17, characterized in that a film, in particular a bottom side wall foil (7), top side wall foil (8) or cover foil (9), the shell (2) is produced from two material webs, which in a recess (7 ', 8') for the reflector film (4) or - 24 - a recess (9 ') for the transparent film (10) is formed.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0220971A1|1985-09-20|1987-05-06|TOTAL ENERGIE DEVELOPPEMENT, Société Anonyme dite|Rollable solar energy collecting-storing unit|
    US20090260620A1|2008-04-17|2009-10-22|Winger Ian L|Inflatable solar energy collector apparatus|
    US4672389A|1985-05-28|1987-06-09|Ulry David N|Inflatable reflector apparatus and method of manufacture|
    US6295818B1|1999-06-29|2001-10-02|Powerlight Corporation|PV-thermal solar power assembly|
    US20020170555A1|2001-05-17|2002-11-21|Stoumen O?Apos;Malley O?Apos;Connor|Collapsible pop-open lightweight solar heating system|
    DE10320494B4|2003-05-08|2006-07-13|Brandenburgische Technische Universität Cottbus|Process for the production and installation of large-area solar panels|
    DE202005001488U1|2005-01-31|2005-06-09|Kocheshev, Victor|Solar collector completely made from flexible materials comprises a flexible plastic tubing for a working medium lying on a base material|
    AT505075B1|2007-03-30|2009-01-15|Hoefler Johannes|INFLATABLE SUN COLLECTOR|EP3015787A1|2014-10-31|2016-05-04|Heliovis AG|Device for the concentration of solar radiation with inflatable concentrator cushion|
    EP3015789A1|2014-10-31|2016-05-04|Heliovis AG|Device for the concentration of solar radiation with inflatable concentrator cushion|
    EP3015788A1|2014-10-31|2016-05-04|Heliovis AG|Device for the concentration of solar radiation with inflatable concentrator cushion|
    AT516019B1|2014-10-31|2016-02-15|Heliovis Ag|Device for holding an inflatable concentrator pad|
    CN104570176B|2015-02-10|2016-08-24|哈尔滨工业大学|A kind of inflated type film reflecting mirror and assembly tooling thereof and assembly method|
    CN105526719A|2016-02-18|2016-04-27|李俊娇|Inflation tank type solar collecting lens device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2093/2010A|AT511007B1|2010-12-20|2010-12-20|INFLATABLE CONCENTRATOR FOR BUNNING RADIATION AND METHOD FOR THE PRODUCTION THEREOF|ATA2093/2010A| AT511007B1|2010-12-20|2010-12-20|INFLATABLE CONCENTRATOR FOR BUNNING RADIATION AND METHOD FOR THE PRODUCTION THEREOF|
    EP11808559.6A| EP2655989B1|2010-12-20|2011-12-19|Inflatable concentrator for concentrating radiation|
    ES11808559T| ES2709771T3|2010-12-20|2011-12-19|Inflatable concentrator to concentrate radiation|
    CN201180061484.5A| CN103261813B|2010-12-20|2011-12-19|Inflatable optical collector for making radiation converge and manufacture method thereof|
    PCT/AT2011/000500| WO2012083321A1|2010-12-20|2011-12-19|Inflatable concentrator for concentrating radiation and method for producing same|
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