DE102007053375A1 - Solar technical collector - Google Patents

Abstract

The invention relates to a solar collector with a housing having at one open end a peripheral edge strips, and a transparent cover which is peripherally bonded to the edge strip of the housing, wherein the edge strip does not project laterally relative to the cover.

Description

object The invention is a solar collector.

Of the The subject matter of the invention may form part of a complex installation and fastening system for solar technology collectors (in particular hot water and photovoltaic panels), the For example, on a roof, in a roof, on or in one Building facade to be installed. A possible Fastening system in which integrates the object of the invention can be explained in more detail in the description of the figures.

The mentioned collectors often have a flat cuboid Housing with dimensions (width, length, height) of about 100 × 200 × 10 cm. They are called so-called Frame collectors or tub collectors known.

Previous Fastening systems are largely rigid and can do not take into account local design specifications. As a result, collectors are often skewed and optical insufficiently assembled. Another disadvantage is that known Fasteners can only be installed by means of tools. For the fitters this means additional difficulties especially for roof and façade installation.

task The invention is to provide a solar collector, which has a structurally simple design and with simple Means safely and without tools are mounted can. The design of the collector should be such that the collector during assembly as easy as possible in the desired Endposition can be adjusted.

From the EP 1 775 525 A1 is a solar collector in frame construction known, wherein the side walls are bent to receive a transparent cover L-shaped, which together with an integrally formed in extension of the side walls web a trough-shaped, circumferential channel for receiving an adhesive seam results.

apart there is the disadvantage of the relatively complicated edge training that the adhesive seam surrounds the transparent cover on all sides and so that not only the sunlight, but any weathering is exposed. Together with the mentioned channel is also the optics the collector on the visible side unsatisfactory.

• – einem Gehäuse, das an einem offenen Ende einen umlaufenden Randstreifen aufweist, und
• – einer transparenten Abdeckung, die umlaufend mit dem Randstreifen des Gehäuses verklebt ist, wobei
• – der Randstreifen seitlich nicht über die Abdeckung vorsteht.

In contrast, the subject of the invention is a solar collector with

• - A housing having an encircling edge strip at an open end, and
• - A transparent cover which is glued circumferentially with the edge strip of the housing, wherein
• - The edge strip does not protrude laterally beyond the cover.

The "open End "of the housing, which is in the mounting position of the housing facing the sun is closed by the collector cover.

It is therefore a frameless collector, the housing and cover are bonded directly to each other at the edge. Since the edge strip does not protrude laterally beyond the cover, results for the visible side of the collector an optimized Optics that are determined solely by the cover which is colored in the peripheral adhesive area can.

Thereby, that the bonding, in the direction of solar radiation, exclusively takes place behind the cover, omitted in the prior art above described disadvantages.

constructive the collector is clearly over the prior art reduced because edging, frame parts or channels for the adhesive seam is eliminated.

cover and edge strips can be flush with each other on the circumference to lock. An embodiment provides that the cover protrudes from the edge strip on all sides.

In In any case, the positive effect of a thin edge area of edge strip and cover, the easily from associated fasteners, as below can be described, can be applied.

Of the Edge strips can at least in sections parallel to the cover run. This is especially true for the perimeter free end of the border strip.

Of the Edge strips can also be profiled, for example form a bead-like circumferential recess, the recording the adhesive is used. Such an embodiment is in the following description of the figures also shown.

The transparent cover, through which the sun's rays on an absorber sheet fall, may have a flat or domed edge on the circumference exhibit. Due to the frameless design can be in both embodiments, adjacent flat plate collectors immediately together, once without and once with shadow gap.

at an embodiment with concave curved edge It is convenient if the edge strip is not in the area the arched edge protrudes.

Of the inventive collector can be used as a frame or Be shaped cup collector. In both cases that is Housing approximately cuboid. at the tub shape is the bottom and the four side walls and the edge strip in one piece.

A Another embodiment provides, the cover edge form with a circumferential bead pointing away from the housing. The bead has not only optical reasons, but also can serve to fix a retaining clip, which is part of a mounting bracket for the collector. A corresponding embodiment is shown in the figure description below.

This also applies to a collector whose housing in the floor area at least one outwardly projecting Support strip has. Usually, the case bottom flat. If the collector is placed on corresponding rails, he can slip on a pitched roof, in particular during assembly. To prevent this is the mentioned support bar intended. Is the support led behind the rail, the collector can not slip away anymore.

When this embodiment proves to be particularly advantageous in cooperation with a correspondingly designed rail, the support bar at the bottom of the collector interacts with a bar attached to a rail, which is also disclosed in more detail in the description of the figures.

Becomes the at least one support bar with an approximate formed triangular cross-sectional profile, the Collector on the rail or attached to the rail bar be deferred before the support bar behind the rail slips and sets the collector. With two mirror images in the Distance from each other arranged support strips results the possibility of the bar of the rail in the said Specify distance space exactly.

The corresponding thermo functional elements of the collector the prior art and will not be described here. This applies both to a solar collector for heating of water as well as a photovoltaic collector for power generation.

Further Features of the invention will become apparent from the features of the subclaims as well as the other application documents.

• – Mehrere Klammern, wobei jede Klammer zwei Funktionsabschnitte aufweist:
• – Einen ersten Abschnitt, mit dem die Klammer an einem feststehenden Körper, wie einer Dachschalung, befestigbar ist,
• – einen zweiten Abschnitt zur Aufnahme, Führung und Befestigung einer zugehörigen Schiene, wobei der zweite Abschnitt auf einem Dachelement wie einer Dachpfanne aufliegen kann,
• – entsprechend ihrer Funktion können erster und zweiter Abschnitt im Abstand zueinander, beispielsweise an gegenüberliegenden Endabschnitten einer Klammer angeordnet sein,
• – mehrere Schienen, die an den Klammern befestigt werden können, und auf denen die Kollektoren unmittelbar oder mittelbar aufgelegt und abgestützt werden,
• – mehrere Bügel, wobei jeder Bügel zwei Funktionsabschnitte aufweist: Einen ersten Abschnitt, der an einer zugehörigen Schiene befestigt wird,
• – einen zweiten Abschnitt, mit dem der Bügel einen korrespondierenden Kollektor fixiert,
• – entsprechend ihrer Funktion können erster und zweiter Abschnitt des Bügels im Abstand zueinander, beispielsweise an gegenüberliegenden Endabschnitten des Bügels angeordnet sein.

The subject of the invention can be used as part of a fastening system for solar thermal collectors, comprising the following components, wherein components can be used alone or in combination with other components within a fastening system:

• Multiple brackets, each bracket having two functional sections:
• A first section, with which the clip can be attached to a fixed body, such as a roof shuttering,
• A second section for receiving, guiding and fastening an associated rail, wherein the second section can rest on a roof element such as a roof tile,
• According to their function, the first and second sections can be arranged at a distance from one another, for example at opposite end sections of a bracket,
• A plurality of rails which can be fastened to the clamps and on which the collectors are placed or supported directly or indirectly,
• A plurality of stirrups, each stirrup having two functional sections: a first section which is fastened to an associated rail,
• A second section with which the bracket fixes a corresponding collector,
• - According to their function, the first and second portions of the bracket at a distance from each other, for example, be arranged at opposite end portions of the bracket.

Of the Structure and assignment of the individual components will be explained below the example of a flat cuboid hot water solar collector described and shown on a roof surface (with Clay tiles occupied) with 45 ° inclination to be mounted. There are also possible alternative embodiments called, without the idea of the invention and the field of application in this respect to restrict. This applies to the material selection as well as for sizing.

In the schematic and not to scale figures show:

1 : A side view of a clamp before assembly.

2 : A side view of the clip with inserted rail after assembly,

3 : A side view of the first embodiment of a clip in the region of the rail in a mounting position,

4 : A side view analog 3 for a second embodiment of a clip and Rail,

5 : A perspective view of a bracket attached to the rail and its connection to a collector,

6 : A side view of the component group after 5 .

7 : An enlarged view of a connecting element between two axially adjoining rails,

8th : A perspective view of a second embodiment of a bracket with associated collector,

9 : A side view of the component group after 8th .

10 : An enlarged view of the connection area between bracket and rail according to 8th . 9 .

11 : A section through an edge section of a collector,

12 : A perspective view of a mounting bracket (third embodiment).

1 shows a clamp with two staple parts: An L-shaped angle 10 (first bracket part) is with his long thigh 10l fastened on a roof formwork D, while its short leg 10k protrudes vertically from the roof formwork D. On its inside (in the figure, the left side) has the short leg 10k a profiling 10p on, which is sawtooth in the side view. The merging mountains and valleys of profiling 10p parallel to each other and parallel to the roof form D.

The second clamp part also consists of an L-shaped angle 12 , where the shorter leg 12k from two leg arms parallel spaced apart 12k1 and 12k2 consists. The distance of the leg arms 12k1 and 12k2 is so big that the thigh 10k of the angle 10 can be inserted between them in the direction of arrow P, as in the 1 shown.

The left leg arm in the figure 12k1 points to his thigh arm 12k2 facing side a profiling 12p Corresponding to the profiling 10p on, so that both form-fitting interlock and the angles 10 . 12 position exactly when the angles 10 . 12 be shifted against each other in the direction of arrow H, as in the 1b and 2 shown. In addition, the remaining space will be added 14 between the thigh arm 12k2 and the thigh 10k with a filler like a pen 16 (or a screw) filled. The toothing and connection of the angles 10 . 12 is known as such under the name "Voith-Hirth serration", but for other purposes.

It serves the angle 12 to assemble, but at the same time during the assembly process an adjustability of the angle 12 along the profiles (ie perpendicular to the plane) to allow to ensure an exact positioning and compensate for tolerances, etc. The Voith-Hirth gearing allows the angles 10 . 12 to align exactly. About the position in which the two profilings 10p . 12p In addition, the distance between the angles can be positively interlocked 12 Set to the roof formwork D. The thigh arm 121 lies on a roof tile Z, which is mounted on a battens L

This results in a defined and predeterminable position for a in the side view of the 1 . 2 groove-like profile 20 at the other end of the angle 12 , The groove-like profile is shown in the illustration 2 upwards, so opposite to the short leg arms 12k1 . 12k2 ,

As 2 shows describes the channel-like profile 20 an upwardly open circular ring section of about 190 °. The wrap angle should be> 180 ° to a rail 30 can record positive and non-positive. The rail 30 Here is an extruded hollow profile body and designed as follows ( 3 . 4 ): Two side surfaces running parallel to each other in the distance 30o and 30u are outside of two oppositely curved circular ring sections 30k connected, whose curvature of the curvature of the profile 20 equivalent. In a position offset approximately 90 ° to the illustrated installation position, the rail 30 in the profile 20 inserted and then turned clockwise until one on the side surface 30o projecting, designed as a lip stop surface 30l against a corresponding step-shaped stop surface 20a of the profile 20 strikes ( 4 ).

An alternative embodiment shows 3 , Each outer surface of each circular section 30k has a staircase-like step 30s , Every level 30s beats in the mounting position ( 3 ) against a corresponding stage 20s on the inner surface of the profile 20 at. The lifting gear is positioned at 09.00 h and 03.00 h.

For mounting the rail 30 this will be in at least two profiles 20 inserted by at least two brackets, which are arranged at a distance from each other on the roof. This position defines the mounting position of the rail in the profiles 20 , wherein the circular ring sections 30k each flat against corresponding inner surfaces of the profile 20 issue. As 3 shows form the upper side surface 20o every profile 20 and the upper side surface 30o the rail 30 a level.

On the rails 30 Furthermore, mounting brackets for a collector can be placed. The determination of the bracket on the rail, for example, analogous to the attachment of the clamp part 12 at the rail 30 respectively. The structure and function of the bracket is based on further embodiments in the 5 to 10 described in more detail.

In the illustrated embodiment extends from the side surface 30o a bar 32 to the top, which is a mounting rail for an associated collector 40 forms. The bar 32 has a rectangular cross-section.

In the 2 to 4 is the collector 40 with a part of its cuboid flat housing 40g to recognize. Along its bottom 44 run two support strips 46l . 46r each parallel to the bar 32 and at a distance from each other, the width of the bar 32 is equal or slightly larger. The strips 46l . 46r run parallel to narrow sides (not shown) and over the entire width of the collector 40 , While the opposite inner surfaces of the support strips 46l . 46r vertically from the bottom of the tub 44 stand out, the respective outer surfaces are inclined oppositely, so that for each support strip 46l . 46r in the side view of a triangular cross section and for the arrangement as a whole results in a trapezoidal cross-section.

strip 32 and support rails 46l . 46r serve the assembly of the collector 40 on a corresponding rail 30 wherein the rail, as is apparent from the above description, on at least two profiles 20 is fixed, which are arranged at a distance from each other. This is the collector 40 from left or right to the rail 30 postponed. Upon reaching the support strips 46r (or 46l ) becomes the collector 40 first along the corresponding inclined surface of the support strip 46r (or 46l ) something from the track 30 lifted off until it slides down under the influence of gravity, with the bar 32 in the gap 46z between the support strips 46r . 46l falls. Now is the collector 40 exactly to the rail 30 and exactly to the angle 12 arranged (mounting position to 2 ).

Basically, a collector would suffice 40 on a rail 30 to assemble. He would then but inclined to go to the roof formwork D. 2 shows a parallel arrangement of roof formwork D and collector 40 , from which it follows that the collector 40 still rests on a second, not shown, the rail analogous to the rail 30 is designed and assembled.

The 5 and 6 show a hanger 50 for fixing the collector 40 at the rail 30 , The coat hanger 50 has a first section 50u on top of the rail 30 encompasses and a second section 50o with a border 40r of the collector 40 is fixed.

The first paragraph 50u has on average approximately a horizontal U-shape with two parallel legs, the upper leg 52o with a step 52s is trained, the bar 32 the rail 30 surrounds flush. The coat hanger 50 gets sideways on the rail 30 deferred (parallel to the surface 30o ), until a concavely curved inner surface 52v of the connecting leg 52r against the corresponding curved outer surface of the circular ring section 30k the rail 30 is applied. ( 5 . 6 ). The designed as a molded plastic part bracket then stands with its middle housing section 50g vertically upwards from the rail 30 from. The housing section 50g is closed on three sides and on one side (in 6 forward). The two parallel side walls 50s of the housing section 50g are graduated at their free upper end (step 50t ) educated. Over the steps 50t is on the second section 50o a lid 54 to recognize its longitudinal direction parallel to the rail 30 lies and at the end 54l That's the end, the furthest from the collector 40 away, via a movie hinge 54f with the housing section 50g connected is.

The lid 54 is dimensioned so that it has an edge 40r of the collector 40 can be placed when the hanger 50 on the rails 30 towards the collector 40 is moved and the edge 40r of the collector 40 on the steps 50t runs. After that, a screw 56 perpendicular to the rail through the lid 54 guided and through the first section 50u to the lower leg 52u , This is the lid 54 towards the rail 30 pulled until he is on the edge 40r of the collector 40 rests. The screw 56 can then be tightened a bit further to the collector 40 against the rail 30 to tense and secure. At the same time, the position of the bracket 50 opposite the rail 30 fixed.

The coat hanger 50 can also according to 12 be designed. The first paragraph 50u ' again has a U-shape, but so that the hanger 50 perpendicular to the track on the rail 30 is put on. A U-thigh 50l is again U-shaped, but in a direction perpendicular to the U-shape of the section 50u ' , This results in a kind of bayonet closure to the temple 50 on the rails 30 to Fasten. After the described attachment of the bracket 50 on the rail 30 becomes the hanger 50 shifted by 90 ° in the illustrated mounting position (arrow D). Also his attachment end 50o ' is something different than in 6 . 7 , The lid 54 ' is approximately oval and forms the part of a screw 56 ' on a hanger body 50g is screwed on, the collector 40 between lids 54 ' and a spaced edge 55 is clamped.

It is clear that a collector has at least two stirrups 50 (on opposite longitudinal or broad sides) or better: over four brackets (two each on each longitudinal or broadside) is attached. Due to the rail system, the positions of the bracket can be 50 individually set up. The exact position of adjacent collectors 40 can also be done at the construction site. By the described embodiment, adjacent collectors can be 40 position accurately and tightly. As a result, a higher occupation density and improved appearance is achieved, which is important, for example, in a facade installation.

The illustrated collector 40 is characterized in that it is frameless. Its cuboid housing 40g is on its side facing the sun with the peripheral edge strip 40r formed on which a transparent cover 40a is glued (adhesive area K hatched in 11 shown), wherein the edge strip 40r in front of a convex arched edge 40s the cover 40a ends, that is not laterally opposite the cover 40a protrudes and other enclosures and / or seals are not available. As the 9 and 11 can show the edge strip 40r one opposite the cover 40a convex zone 40k have, which receives the inside of the adhesive. In 11 is also an absorber sheet 40b and an associated so-called register tube 40l to recognize the side of the housing 40g led out. Underneath is a thermal insulation made of mineral wool 40t to recognize. At the edge 40r the cover 40 Dashed is a circumferential bead 40w to recognize (possible further embodiment of a bracket of the type described below).

An alternative mounting bracket 60 show the 8th - 10 , The first end 60u of the temple 60 is U-shaped (open at the bottom) designed, however, in a plane perpendicular to the longitudinal axis of the rail 30 (relative to the illustrated mounting position). Both U-thighs 60r . 60l are bent inwards at their free end, whereby latching elements 60rr be formed. When placing the strap 60 on the rail 30 become the U-thighs 60r . 60l first bent outwards before passing the rail 30 spring back and with their locking elements 60rr engage in slots (not shown) on the lower face 30u the rail 30 are formed. When attaching the strap 60 becomes at the same time a two-part spring 62 looking forward, from a housing section 60g is formed. The housing section 60g represents the middle part of the mounting bracket 60 dar. The spring arms are with 62q and 62f referred to, between the two recognizable recess with 62a , The spring arms 62q . 62f lie in the illustrated mounting position under pretension on the rail 30 on ( 10 ). Nevertheless, the mounting bracket along the rail 30 be moved by pushing against the resistance of the spring 62 something against the rail 30 is pressed until the latching arms 60rr have solved something of the rail. So can the strap 60 be adapted exactly to the desired collector position. When pushed onto the collector 40 becomes a wave-shaped spring part 60w on the second section 60o over a bead-like edge 40w of the collector 40 guided. This is the collector 40 under tension against the rail 30 pulled and held. At an opposite edge portion of the collector 40 is analogous to a second bracket 60 attached. More hangers 60 can be analogous on other tracks 30 to be assembled.

The 7 and 9 show how two rails 30 can be connected to each other in the axial direction, namely via a tubular adapter A, which in corresponding, axially extending tubular receiving openings 30a a pipe profile 30p every rail 30 is inserted under positive engagement. According to 3 and 4 is the pipe profile 30p via radial webs 30r with the circumferential rail wall (the circular ring sections 30k ) connected.

With the described components, a complete assembly and fastening system for solar collectors (for example, collectors for hot water or electricity) can be created quickly, safely and almost without tools. A screwdriver is enough for the angle 10 on the roof formwork D and the screw 56 to fix. All other parts can be mounted without tools. All components can be made of metal or plastic, for example. Several of the fasteners described are variable in position, that is, they can be moved on site in different directions of the coordinate system to compensate for tolerances on site can.

By the thighs 10k . 12k1 along different tread grooves are interconnected mobility is perpendicular to the roof surface possible (z-direction). A shift parallel to the tread grooves creates an adaptability in ei ner second direction (x-direction). The arrangement of the angle 10l can be adjusted in the y direction.

The rail 30 can along the profiles 20 be moved in the axial direction (x-direction as before). This also applies to the position of the bracket 50 along the rail 30 ,

The collector 40 can be over the fasteners of the hanger 50 against the rail 30 tense.

The System can be expanded as required. It can be on flat roofs and roofs of any inclination, but also mounted on facades become.

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

• - EP 1775525 A1 [0006]

Claims (12)

Solar technical collector ( 40 ) with a housing ( 40g ) at an open end ( 40o ) a circumferential edge strip ( 40r ) and a transparent cover ( 40a ), which circumferentially with the edge strip ( 40r ) of the housing ( 40 ) is glued, wherein the edge strip ( 40r ) not laterally opposite the cover ( 40a ) protrudes. A collector according to claim 1, whose cover ( 40a ) opposite the edge strip ( 40r ) projects on all sides. Collector according to claim 1, whose edge strip ( 40r ) at least in sections parallel to the cover ( 40a ) runs. Collector according to claim 1, whose edge strip ( 40r ) at least one opposite the cover ( 40a ) convex zone ( 40k ) having. A collector according to claim 1, whose cover ( 40a ) circumferentially a curved edge ( 40s ) having. Collector according to claim 5, the edge strips ( 40r ) peripherally not in the area of the curved edge ( 40s ) protrudes. Collector according to claim 1, whose housing ( 40g ) is approximately cuboid. Collector according to claim 1, whose housing ( 40g ) from one on five sides except for connecting elements ( 40l ) closed tub exists. A collector according to claim 1, whose cover ( 40a ) at the edge one from the housing ( 40g ) groundbreaking circumferential bead ( 40w ) having. Collector according to claim 1, whose housing ( 40g ) in the floor area at least one outwardly projecting support strip ( 46l . 46r ) having. Collector according to Claim 10, in which the support strip ( 46l . 46r ) has an at least approximately triangular cross-sectional profile. Collector according to claim 11 with two mirror-image spaced apart support strips ( 46l . 46r ).