DE202009008630U1 - Requirements collector - Google Patents

Abstract

The BK is characterized in that the collector foil is rolled up in an opaque box on a central unwinding device.

Description

Description in general

At the Use of foil collectors has the problem that these collectors Although inexpensive very large area usable are the energy of these very large-scale collectors but not fully decreased in the summer months can be and thus it comes to overheating problems.

Farther the big problem is the too low durability of the Films due to UV decomposition. A third big problem are the possible weather loads and then needed more stable construction.

With Help of the demand collectors, these problems can be very elegant solve in one fell swoop. The demand collector is a foil air collector, which is extended only when needed. In case of overheating, strong wind, rain or snow becomes the collector of the automatic fuse retracted. Even in case of power failure, the collector is using a Battery retracted to avoid impending overheating.

Farther if the collector is only deployed in case of need, and in the summer after the demand cover again overtaken, whereby over a control and threshold circuit a constant on and Extension is prevented. Even summer and winter are from the Control automatically detected.

moreover is a partial extension possible to cover the base load, this more UV-stressed film area after several Years replaced separately via a clamp connection can be. Also a cut off after several years and one Stocking of extra film for multiple trimming operations is possible here.

One Another advantage of the system is that with the help of oversizing a very high peak performance is achieved, which is also lower Dimensioning of the heat storage allows.

by virtue of this measure and the massive oversizing of the collector, the films in the summer are always the sunlight exposed for only a few hours, reducing the life of the film around extended for several years.

on the other hand be in the colder months due to the large Surfaces better coverage in the heat supply achieved as well as a simultaneous thermal insulation effect for the roof.

One Another important point in the cost savings is that as a receptor - if possible - already thermally insulated Roof is used. This applies to both flat and Pitched roofs. Flat roofs are heating up in summer even without a collector up to 80 ° C. These Temperature is at the demand collectors due to the ongoing Ventilation for the removal of heat also not exceeded. Should it due to insufficient ventilation to a further increase in temperature, so is the demand collector automatically obtained gradually. Is the roof not yet thermally insulated, so is another thermal barrier coating and sealant in the collector area on the roof. Optional is too a design with retractable receptor foil possible.

self-cleaning

At the Retraction and extension of the collector in normal operation (not emergency power Collection), the foil on the top and bottom with the help cleaned rotating brush, which in normal operation the Efficiency of the plant keeps at a constant level.

technical description

The central element of the collector is the foil box, which contains the transparent collector foil on an automatic roll-off device. Furthermore, the heat exchanger, the blower and a motor with a changeover or change gear are mounted in the foil box. The film is rolled out, for example, by means of a cable which runs laterally over the two rails. Important here are the fixedly mounted on the roof poor thermal conductivity spacers, which prevent a support of the collector foil on the roof. The air is now sucked in through the heat exchanger and under the film via the fan. The Side rubber seals prevent the air from being drawn from the side of the collector. Elongated slanted spacers also ensure a swirling of the intake air. By regularly sucking in the air, overheating of the roof can also be avoided.

to Reaching higher temperatures or not thermally insulated Roofs there is an alternative construction, in which as well a black receptor foil to be extended with kenn. Spacers provide making sure that the receptor foil is not in contact with the roof comes. Further, by means of an intermediate bracing mounted spacers, ensure that the collector foil does not work with the Receptor foil in contact.

applications

The The following fields of application arise for demand collectors

Warmwasserversorgnung

With Help of a storage water tank can provide the hot water in the Summer and winter are optimally supported.

pool heating

One ideal supplementary case in addition to the hot water supply is the simultaneous use of the collector system as pool heating. by virtue of The massive oversizing in summer can be the bathing season thus be extended massively.

building air conditioning

The LTC chillers from Invensor (www.invensor.com) can already be operated from 65 ° C collector temperature become. Thus, in the summer with the foil collectors a solar powered air conditioning possible. If necessary, a few square meters of classic glass-air collectors are enough to the last temperature increase.

building ventilation

in the Winter is a heating support in the form of building ventilation possible. Ventilation is via preheated Fresh air from the collector, which improves the air quality and significantly reduce energy consumption.

In Combined with a pool heating is also a room air conditioning possible in the summer by feeding the collector, and with the help of the heat exchanger the fresh air for the building with the help of pool water cooled becomes.

Holiday house solar system

Also in southern countries is partially - straight in private holiday homes - because of the long vacancy periods and the resulting overheating problems Solar systems omitted. Here, too, there are demand collectors at.

Drying of fruits

to Drying of fruits will be temperatures from 40 to 70 Degree needed provided by the collector directly can be.

Current state of the art

• http://www.dbu.de/projekt_06295/_db_1036.html
• http://www.dbu.de/PDF-Files/A-06295.pdf
• http://www.patent-de.com/20061026/DE202005007474U1.html
• http://www.zae-bavern.de/deutsch/abteilung-1/projekte/
• http://www.zae-bayern.de/files/conergy_folienkollektor.pdf

We have found the following publications that go in a similar direction:

• http://www.dbu.de/projekt_06295/_db_1036.html
• http://www.dbu.de/PDF-Files/A-06295.pdf
• http://www.patent-de.com/20061026/DE202005007474U1.html
• http://www.zae-bavern.de/deutsch/abteilung-1/projekte/
• http://www.zae-bayern.de/files/conergy_folienkollektor.pdf

• DE 10 206 022 426 A1 ; DE 43 25 887 C2
• DE 41 03 344 A1 ; DE 37 08 196 A1
• DE 33 05 838 A1 ; DE 32 00 998 A1
• US 39 08 831 ; US 30 22 781
• EP 02 08 691 B1

Legende für Zeichnungen Nr Beschreibung 1 Lüftungsgitter, nach außen abfallend. Kann optional auch durch Lüftungsschlauch für Gebäudebelüftung ersetzt werden. 2 Lüfter, optional als Vertikallüfter 3 Optional Wärmetauscher 4 Gelenke/Scharniere 5 Locker aufliegende Lüftungsklappe. Stellung bei voll ausgefahrener Kollektorfolie. Dient als Rückschlagventil. 6 Gehäuse 7 Locker aufliegende Lüftungsklappe. Stellung bei voll eingerollter Kollektorfolie 8 Voll aufgerollte Kollektorfolie (gestrichelte Darstellung) 9 Metallrolle Motorbetrieben 10 Rohr zum Schutz vor Verletzung der Folie. 11 Ausgezogene Kollektorfolie (UV5 Gewächshausfolie) 12 UV5 Folie in voll eingerollten Zustand (gestrichelte Darstellung) 13 Austrittsöffnung für Folie 14 Folienabschlussstange, mit Folie verbunden; Größer als Austrittsöffnung; Stellung bei voll eingerollter Kollektorfolie (gestrichelte Darstellung) 15 Ablenkrolle 16 Seilzug zum Ausfahren der Kollektorbahn 17 Schiene die optional als seitlich geschlitztes Rohr ausgeprägt sein kann. 18 Folienbox 19 Zentrale Kabeltrommel und Motorbetriebener Seilzug (übereinanderliegend) 20 Kontakt für Endabschaltung des Aus- und Einrollvorgangs 21 Abstandshalter auf dem Dach 22 Schutzfolie, welche das Endstück der Kollektorfolie vor Sonnenlicht schützt. (weiß, dick, UV-beständig) On the subject of solar collectors, we have also researched the following patents:

• DE 10 206 022 426 A1 ; DE 43 25 887 C2
• DE 41 03 344 A1 ; DE 37 08 196 A1
• DE 33 05 838 A1 ; DE 32 00 998 A1
• US Pat. No. 3,908,831 ; US 3,022,781
• EP 02 08 691 B1

Legend for drawings No description 1 Ventilation grille, sloping outwards. Can also be optionally replaced with ventilation hose for building ventilation. 2 Fan, optionally as vertical fan 3 Optional heat exchanger 4 Joints / hinges 5 Loose ventilation flap. Position with fully extended collector foil. Serves as a check valve. 6 casing 7 Loose ventilation flap. Position with fully rolled-up collector foil 8th Fully rolled-up collector foil (dashed line) 9 Metal roller engine operated 10 Tube for protection against film damage. 11 Extracted collector foil (UV5 greenhouse foil) 12 UV5 film in full rolled up condition (dashed line) 13 Exit opening for foil 14 Foil termination bar, connected to foil; Larger than the outlet opening; Position with fully rolled-up collector foil (dashed line) 15 deflector roll 16 Cable pull for extending the collector track 17 Rail which can optionally be designed as a laterally slotted tube. 18 Foil dispenser 19 Central cable drum and motorized cable (one above the other) 20 Contact for limit switch-off and roll-out operation 21 Spacer on the roof 22 Protective film that protects the tail of the collector film from sunlight. (white, thick, UV-resistant)

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10206022426 A1 [0022]
• - DE 4325887 C2 [0022]
• - DE 4103344 A1 [0022]
• - DE 3708196 A1 [0022]
• DE 3305838 A1 [0022]
• - DE 3200998 A1 [0022]
• US 3908831 [0022]
• US 3,022,781 [0022]
• - EP 0208691 [0022]

Cited non-patent literature

• - http://www.dbu.de/projekt_06295/_db_1036.html [0021]
• - http://www.dbu.de/PDF-Files/A-06295.pdf [0021]
• - http://www.patent-de.com/20061026/EN202005007474U1.html [0021]
• - http://www.zae-bavern.de/deutsch/abteilung-1/projekte/ [0021]
• - http://www.zae-bayern.de/files/conergy_folienkollektor.pdf [0021]

Claims (39)

The BK is characterized in that the collector foil is rolled up in an opaque box on a central unwinding device. The BK is characterized in that the box open at full length to replace the collector foil can be. The BK is characterized in that at the top of the outlet opening ( 13 ) a rounded and optionally lined molded part is attached. The BK is characterized by being directly behind the outlet opening above and below the film full length two rotatable cleaning brushes are mounted during rolling up during normal operation. or be folded down and the film to be recovered in opposite directions clean off. The BK is characterized in that the collector foil from a transparent greenhouse film (eg UV5 / PE Foil). The BK is characterized in that the collector film is connected to the extendable end in full length with a rigid rod (Folienabschlusstange 14 ). A few centimeters of the film are also glued using a light protective film that protects this connector from the UV light. The BK is characterized in that the Folienabschlussstange ( 14 ) is wider than the exit opening ( 13 ) of the foil box ( 18 ). The BK is characterized in that the Folienabschlussstange ( 14 ) on the sides in the track ( 17 ) attacks. The BK is characterized in that parallel to the running rail in the side region of the collector foil on the roof two rubber seals are mounted. The rubber seals are the same height as the spacers ( 21 ). The rubber seals are parallel with a distance of a few inches to the track. The BK is characterized in that on the Roof in the area of the extendable collector foil several spacers at regular intervals and in rows be attached. The spacers are made of a bad heat-conducting and weather-resistant material and are kept in a light color. The BK is characterized in that the spacers are rounded at the top and form an acute angle to the roof. The spacers are glued on the roof. For example, with silicone. The BK is characterized in that the metal roller ( 9 ) on which the collector foil ( 11 ) is rolled up on the sides of the foil box ( 18 ) is suspended by means of a ball bearing. The BK is characterized in that the metal roller ( 9 ) can be rolled over a switchable transmission or changeover circuit or switched to idle. The BK is characterized in that a motor in the side region of the foil box ( 18 ) is housed, which can roll over the switchable gear either the film roll, or over the cable the Folienabschlusstange ( 14 ) on the running machine ( 17 ) can take off. The BK is characterized in that the extraction and the rolling process using the Endabschalter ( 20 ) is limited. The BK is characterized in that inside the foil box on the ceiling by means of hinges ( 4 ) a ventilation flap ( 5 ) is mounted, which always rests loosely and without full weight on the roll of film protruding. The ventilation flap is also padded on the friction surface by a flow. The BK is characterized by being behind the Film roll at full height of the foil box 1-3 Rows of air-water heat exchangers are attached. In the Mounting of several rows work the heat exchangers in opposite directions. The output always lies on the side of the collector foil. With a pure warm air / ventilation collector can be optional be dispensed with a heat exchanger. The or the Heat exchangers are centered and not mandatory on the full length of the foil box. The BK is characterized in that behind the Heat exchanger is a fan attached. The fan is centered and not necessarily on the full length of the Foil box attached. The fan can optionally also as Be designed axis fan. The BK is characterized in that on the back wall the foil box a ventilation grille is attached. The BK is characterized by being optional The ventilation grille is automatically folded up by a control can be. The BK is characterized in that a control when retracting the film in normal operation, the film using the Cleaning brushes clean and the fan airflow the fan reverses, allowing the air toward the collector foil is blown. The BK is characterized in that a control ensures that after the extension of the collector the Blower for a short period of time at maximum power on counterflow (air flow in the direction of collector foil) switches and thus cleans the collector. The BK is characterized in that a battery or solar collector fed emergency power supply the collector in the Emergency power can catch up. This request is from a Control bypasses the counter air and the cleaning function or temporarily deactivated. The BK is characterized in that optionally an over-tensioning with several thin wires between the foil box and an optional end bar at the end of the rails ( 17 ) can be attached. This overstrain can be lowered after extension of a control press. The BK is characterized in that the control can fuse the collector to a fixed one to secure a base load Length below half of the collector surface exit. The thus more heavily loaded collector foil can with the help of a clamping profile, which as two very thin flat rods is formed, prematurely replaced separately become. The clamping profile bars are thereby at the outer edges with connected to each other. A storage of several meters to the multiple premature replacement of the base load share can alternatively also be provided. The BK is characterized in that for the design on non-insulated roofs before extending the collector foil a few inches below the collector foil has a black non-reflective receptor foil can be pulled out. This receptor foil has its own and Aufrollstange, which also on the switchable Gear is controlled. The BK is characterized in that in the design with receptor foil the spanned receptor foil on a very thin roll is rolled up, which in the extended state a simultaneous air intake above and below the receptor film allows. The BK is characterized in that in the design with receptor film, an additional intermediate bracing, analogous to the already described upper bracing attached. The intermediate strain, always above and in a row with the spacers ( 21 ), also has its own inverted spacers which prevent the collector foil from resting on the receptor foil. However, when removing the receptor sheet, it can be pulled through between the spacers and the intermediate bracing spacers. The receptor sheet is pulled out above the intermediate bracing spacers. The BK is characterized in that mounting plates are mounted under the vertices of the foil box and the rails. The mounting plates are glued to the roof with silicone. The plates have a threaded pin in the middle at the top. With the help of this pin, the structure can be mounted several millimeters flexible on the roof. The foil box and rails point for it corresponding elongated mounting slots. The BK is characterized in that a control Emergency situations such as overheating of the collector surface, strong wind, rain, or snow recognizes and in this case the Collector feeds. In this form of emergency is the ventilation braked first and then to maximum recoil connected. The BK is characterized in that a minimal construction on pitched roofs is possible only consists of a permanently installed receptor foil and collector foil, which directly with the help of spacers between roof and receptor foil and receptor foil and collector foil is attached. The minimal construction exists furthermore from a centrally located unit in the upper area from heat exchanger and fan as well as fixed lateral and upper limits, which prevent the lateral intake of air. The BK is characterized in that a control the energy demand via sensors and adjustable thresholds detects and extends the collector accordingly as well as the associated ventilation and water circulation in the heat exchanger and connected water storage controls. The BK is characterized in that an electronics over several heat sensors on the roof the ventilation and water circulation regulated as needed. It is at lower temperatures the air circulation and water circulation correspondingly reduced or even stopped. The foil remains however in winter also at the fan shutdown as additional Roof thermal insulation extended. The BK is characterized in that a control ensures that when inserting and removing the collector foil the receptor film is always fully extended. The BK is characterized by being optional the spacers slanted as several inches long Air baffles may be pronounced which swirl the air drawn in by the fan. The BK is characterized in that the closing bar optional at the bottom over a coarse air filter extended to protect the collector from leaves and coarse dirt particles can be. This air filter can alternatively also to the possible Pull-out positions of the collector foil be firmly attached. The BK is characterized in that in the foil box the heat exchanger and fan centered attached are. The remaining distance between heat exchanger and Foil box is separated by a partition in such a way that the fan only air through the area of the drawn up Heat exchanger can suck. The BK is characterized in that in the design with additional receptor foil also the lateral rubber seals need an intermediate bracing. With the help of this intermediate bracing are here also provide more rubber seals that pull the prevent side air. The BK is characterized in that an obliquely projecting Sheet metal as rain protection for the outlet opening at the upper end of the foil box mounted above the outlet opening is.