EP2197263A1

EP2197263A1 - Greenhouse system

Info

Publication number: EP2197263A1
Application number: EP08802064A
Authority: EP
Inventors: Leonardus Henricus Wilhelmus Giesen; Gied Rutten; Volker Geyer; Valentino Villari
Original assignee: Scheuten Sarl
Current assignee: Scheuten Sarl
Priority date: 2007-09-28
Filing date: 2008-09-12
Publication date: 2010-06-23
Also published as: EP2042031A1; WO2009043433A1; DK2042031T3; US9003697B2; ES2342567T3; US20100257782A1; EP2042031B1; PL2042031T3; CA2700411A1; ATE462296T1; DE502007003330D1

Abstract

The system has a crop, and a glazing part provided with a functional layer (12) adapted to the crop. The functional layer affects transmission of the glazing in a specific wavelength range and/or to portion of diffuse transmitted light. The part of the glazing of the system has a metal and/or metal oxide layer with different thicknesses, a silver layer (3), and a translucent polymer film. The part of the glazing of the system has a laminated glass arrangement, and a poly vinyl butyral film (PVB) arranged between two glass panes.

Description

Greenhouse System

Description:

The present invention relates to a greenhouse system comprising at least one plant culture, wherein at least a part of the glazing of the greenhouse system comprises at least one functional layer adapted to this plant culture.

It is known to grow crops in greenhouses. For glazing of these greenhouses can be used, for example, glass, in particular silicate glass or Nörpelglas.

Nörpelglas is usually preferred because it protects the plants from burns due to direct sunlight due to its structure and provides diffused light for the plant culture.

However, the insulation of glazed greenhouses usually leaves something to be desired. This requires a lot of energy in the summer to cool these greenhouses and, in winter, requires a lot of energy to heat these greenhouses.

The use of insulating glass for glazing greenhouses is not very common, because in insulating glass, the light transmission is about 10% lower compared to simple glass. This is expected to yield less.

The transmission of the greenhouse or the glazing used in the entire Wejlenlängenbereich plays an important role, since 1% more transmission usually 1% more yield means in the plant culture. However, glazing of greenhouses has recently made more use of vitreous polymer materials.

These have the advantages that they are compared to glass light, unbreakable and usually provided as sandwich panels, hollow panels or as a so-called web double or even as web triple panels available.

However, these materials also have major disadvantages, since they may be transparent to UV light under certain circumstances, and may thus contribute to burns on the crops under high light irradiation. In addition, these materials are not very UV stable and therefore age under continuous light irradiation. In addition, the insulation in sandwich panels, hollow-wall panels or so-called web double or even as web triple plates inefficient compared to insulating glass.

By virtue of these advantages and disadvantages of the various materials used for glazing, it may therefore be difficult to provide the optimal conditions for a particular crop, adapted in each case to the cultivated plants.

The object of the present invention is to provide a greenhouse system which ensures optimal conditions for the respective plant culture.

The object is achieved by a greenhouse system with the features of claim 1.

Advantageous developments and embodiments will become apparent from the following description and the appended claims.

The present invention relates to a greenhouse system comprising at least one plant culture, wherein at least a part of the glazing of the Greenhouse system comprises at least one adapted to this plant culture functional layer.

For the purposes of the present invention, the term greenhouse system encompasses all types of translucent constructions, such as greenhouses, glasshouses, greenhouses, film tunnels, or combinations thereof, which permit the protected cultivation of plants, which preferably comprise at least one plant culture. In this case, the greenhouse system may comprise at least one, but also a plurality of different translucent structures, which are interconnected in some way, for example, through passageways, passageways, tunnels, doors, gates, locks. The individual translucent constructions that allow the protected cultivating of plants, for example, in single construction (each with four exposed walls), in mass production (with at least one common partition between two adjacent constructions) or in block construction (as contiguous blocks with outer walls, but without partitions between adjacent constructions).

For the purposes of the present invention, glazing or glass or glass pane or glass plate encompasses not only all types of glass but also transparent and / or glassy or amorphous polymer materials in the visible wavelength range, for example polycarbonate, polymethylmethacrylate, polyethylene, PVC, polystyrene. Transparent may mean that the transmission in the visible wavelength range is higher than 25%, preferably 50%.

A plant culture according to the invention comprises at least one plant, but preferably two or more preferably adjacent plants which are cultivated. In this case, a plant culture may also comprise several different or particularly preferably the same plants. In addition, the greenhouse system may also comprise several identical or, more preferably, different crops.

Part of the glazing of the greenhouse system according to the present invention means at least a portion of the glazing of the

Greenhouse, so for example at least one glass plate used for glazing. In this context, the terms "part of the glazing" in the sense of the present invention particularly preferably refer to the roof glazing of the greenhouse system or to a part thereof.

A portion of the glazing of the greenhouse system in the context of the present invention may preferably be at least 5%, preferably at least 10%, more preferably at least 15%, more preferably at least 20%, more preferably at least 25%, further preferably at least 30%, more preferably at least 35%, more preferably at least 40%, more preferably at least 45%, particularly preferably at least 50% of the glazing and in particular make the roof glazing of the greenhouse system.

A portion of the glazing of the greenhouse system in the sense of the present invention may be up to 55%, preferably up to 60%, more preferably up to 65%, more preferably up to 70%, more preferably up to 75%, further preferably up to 80% %, more preferably up to 85%, more preferably up to 90%, more preferably up to 95%, particularly preferably up to 100% of the glazing and in particular make the roof glazing of the greenhouse system.

Adapted to a plant culture in the sense of the present invention may mean that at least one property of a part of the glazing of the greenhouse system, thanks to at least one functional layer, is approximated to the respective optimum for this plant culture. In this case, in particular, for example, the proportion of diffused transmitted light or diffused transmitted light and / or the transmission of the glazing in at least one specific wavelength range thanks to at least one functional layer to the respective Optimum be approximated for this plant culture. The optimum for a particular plant culture may coincide with the optimum for the plant of this culture. If the plant culture comprises different plants, the optimum for the plant culture may also correspond to the mean value of the optima for the different plants, optionally taking into account their share of the plant culture.

The optimum with regard to the proportion of diffused transmitted light or diffuse transmitted light depends on the particular crop or on the respective plants. The proportion of diffused transmitted light or of diffused transmitted light or of transmitted scattered light in the sense of the present invention can be the proportion of irradiation light, in particular solar irradiation light, which, after having passed through the glazing (ie, transmitted), as scattered light or diffused light in which the individual light beams are substantially (not) aligned parallel to each other, enters the interior of the greenhouse system. The possibly original parallel alignment can be disturbed by scattering, in particular by volume scattering, for example by reflections, by refraction phenomena or by interference phenomena.

The optimum transmission in certain wavelength ranges depends on the particular crop or on the respective plants. Generally, however, one can say that high transmission is beneficial for plant growth.

However, for each plant, there is a fairly individual so-called PAR (Photosynthetic Active Radiation) region of the electromagnetic spectrum. The PAR region is the wavelength range that can contribute to the growth of the respective plant culture or of the respective plant, since it can be used for photosynthesis. The PAR region usually comprises, for example, a wavelength range from 300 nm to 800 nm, preferably from 400 nm to 700 nm. Within this range, certain wavelengths contribute in a particularly efficient manner to photosynthesis and thus to plant growth. The yellow / orange light in the wavelength range between approximately 550 nm and 600 nm, in particular between 600 nm and 650 nm, is particularly efficient. Also, red light in the wavelength range between about 650 nm and 700 nm is very efficient. Blue / green light in the wavelength range between about 400 nm and 475 nm is also efficient. However, green / yellow light in the wavelength range between about 475 nm and 550 nm is less efficient. Differences from plant culture to plant culture or from plant to plant should also be taken into account.

Nevertheless, plants still need a balanced spectrum of light. Too low a proportion of blue light causes the plant to 'shoot' (excessive stalk growth) or its leaves to turn yellow. The ratio red / deep red is also important for plant development. A low amount of deep red reduces stem growth. This sensitivity may vary from plant culture to plant culture or from plant to plant.

A functional layer may, for example, comprise any layer which alters and / or influences in any way the transmission of a glazing in at least one specific wavelength range or the proportion of diffused transmitted light or diffused transmitted light.

In a particularly preferred embodiment of the invention, for example, a functional layer may comprise at least one metal and / or metal oxide layer. Such a layer for adapting the transmission of at least a portion of the glazing of the greenhouse system according to the invention to the PAR area of the respective plant culture may be, for example, a low-E layer specially adapted to the respective plant culture, which normally only reflects and / or absorbs infrared rays and here, however, to adapt the Transmission to the PAR area of the respective crop or to influence the transmission, reflection and absorption in the entire wavelength range can be used. Such a layer may preferably comprise at least one metal and / or metal oxide layer.

The thickness of the metal and / or metal oxide layer may, for example, be between 1 nm and 65 nm, preferably between 3 nm and 50 nm, more preferably between 4 and 40 nm, more preferably between 5 nm and 30 nm, more preferably between 6 nm and 25 nm, more preferably between 7 nm and 20 nm, particularly preferably between 8 nm and 15 nm.

In a preferred embodiment of the present invention, a functional layer may comprise at least two metal and / or metal oxide layers. In a further preferred embodiment of the present invention, a functional layer may comprise at least two metal and / or metal oxide layers with different thicknesses. By varying the individual layer thicknesses, adaptation to the PAR region of the respective plant culture or a high transmission in the important wavelength ranges from 400 nm to 475 nm and from 600 nm to 700 nm, which are particularly efficient for the photosynthesis, can be achieved. The more layers are used, the more parameters can be changed and / or optionally matched to a particularly flexible and / or efficient and / or accurate adaptation to the PAR area of the respective crop or a high transmission in the important, since for the Photosynthesis particularly efficient wavelength ranges, from 400 nm to 475 nm and from 600 nm to 700 nm to enable.

In a preferred embodiment of the present invention, a functional layer may comprise at least one silver layer. This silver layer can influence the reflection and the transmission of at least a portion of the glazing of the greenhouse system according to the invention in the entire wavelength range. The thickness of the silver layer may be, for example, between 2.5 nm and 30 nm, preferably between 3 nm and 25 nm, more preferably between 3.5 and 20 nm, more preferably between 4 nm and 15 nm, more preferably between 4.5 nm and 14 nm, more preferably between 5 nm and 13 nm.

For a thin silver layer, the transmission of the silver layer is generally higher compared to a thicker silver layer. In addition, the transmission is higher, in particular in the wavelength range between 600 nm and 800 nm with a thin silver layer compared to a thicker silver layer.

By varying the thickness of the silver layer, the transmission of the glazing can be adapted to the PAR region of the respective crop or plant. In addition, high transmission can be achieved in the important wavelength ranges, which are particularly efficient for photosynthesis, from 400 nm to 475 nm and from 600 nm to 700 nm. In addition, the transmission of IR radiation through a silver layer can be reduced. As a result, heating of the greenhouse system can be reduced, for example, in strong light. However, it should be considered that the silver layer (s) according to the present invention for adapting the transmission of the glazing to the PAR region of the respective plant culture or the respective plant or to achieve a high transmission in the important, for photosynthesis particularly efficient wavelength ranges , from 400 nm to 475 nm and from 600 nm to 700 nm. Should this result in a higher transmission in the IR range or discoloration in comparison to a silver layer conventionally used as a low-E layer, this can be accepted in order to achieve a particularly good adaptation to the PAR range of the respective plant culture or each plant or a high transmission in the important, because _^ reach for dje _^ photosynthesis particularly efficient wavelength ranges from 400 nm to 475 nm and from 600 nm to 700 nm. In a particularly preferred embodiment of the greenhouse system according to the present invention, at least a part of the glazing of the greenhouse system may comprise an additional second silver layer.

By varying the thicknesses of the silver layers and by coordinating them with one another, the transmission of the glazing can be adapted particularly flexibly and / or efficiently and / or precisely to the PAR region of the respective plant culture or of the respective plant. In addition, a particularly flexible and / or efficient and / or exactly high transmission in the important, since for the photosynthesis particularly efficient wavelength ranges, from 400 nm to 475 nm and from 600 nm to 700 nm can be achieved. This is possible because if two silver layers are present, the thickness of both silver layers can be changed. Accordingly, there are more parameters which can be changed and / or adapted to one another in order to achieve a particularly flexible and / or efficient and / or exact adaptation to the PAR region of the respective plant culture or the respective plant or a high transmission in the important ones for the photosynthesis of particularly efficient wavelength ranges, from 400 nm to 475 nm and from 600 nm to 700 nm.

In addition, at least a portion of the glazing of the greenhouse system may comprise at least one tin oxide layer. The tin oxide layer can serve as an interference layer, which can influence the color, reflection and transmission of the layer system. For example, increasing the thickness of this layer can result in an increase in reflection and a reduction in transmission. In addition, this layer also affects the transmission in the blue region. The transmission in the blue region can be increased by a very small layer thickness.

In addition, at least a portion of the glazing of the greenhouse system may comprise at least one zinc oxide layer. The zinc oxide layer can likewise serve as an interference layer, which can influence the color, reflection and transmission of the layer system. For example, increasing the thickness of this layer can result in an increase in reflection and a reduction in transmission. In addition, a zinc oxide layer can also serve as a crystallization base for the silver layer. By using a zinc oxide layer as the crystallization base for a silver layer, a silver layer can be obtained which enables a particularly high transmission with at the same time particularly good isolation or low transmission in the IR range. In addition, zinc oxide layers can also be doped with aluminum. As a result, the resistance of the zinc oxide layer against corrosion or oxidation can be increased.

In addition, at least a portion of the glazing of the greenhouse system may comprise at least one NiCrOx layer. This is a substoichiometric oxide layer, where x may therefore preferably be <4. The NiCrOx layer can protect an adjacent silver layer from corrosion or oxidation. Thus, it can ensure that the silver layer can ensure its function over a very long period of time. A variation of the layer thickness can also influence the transmission, in particular in the wavelength range above 700 nm, since the NiCrOx layer absorbs part of the radiation, in particular in the wavelength range above 700 nm. A thicker NiCrOx layer leads to a reduced transmission.

In addition, at least a portion of the glazing of the greenhouse system may comprise at least one ZnSnAlOx layer. This is a substoichiometric oxide layer, where x may therefore preferably be <4. The ZnSnAlOx layer serves, for example, to protect the entire layer structure from corrosion or oxidation. In addition, however, this layer also affects the transmission and reflection. A thicker layer results ZnSnAJOx ^ _^ thereby to an increased reflection and in a reduced transmission. An exemplary functional layer could, for example, comprise the following structure:

a tin oxide layer,

a zinc oxide layer doped with aluminum,

- a silver layer,

a NrCrOx layer, a tin oxide layer,

a ZnSnAlOx layer,

a tin oxide layer,

a zinc oxide layer doped with aluminum,

a silver layer, an NrCrOx layer,

a tin oxide layer,

a ZnSnAlOx layer.

The layer structure which is arranged between the two silver layers and comprises a NrCrOx layer, a tin oxide layer, a ZnSnAlOx layer, a further tin oxide layer, a further aluminum-doped zinc oxide layer can serve as antireflection layer for antireflecting the silver layers. An increase in the thickness of this layer structure can lead to more reflection and less transmission.

In contrast, increasing the thickness of the layered structures respectively disposed above and below the two silver layers, respectively comprising a tin oxide layer and an aluminum-doped zinc oxide layer and a NrCrOx layer, a tin oxide layer and a ZnSnAlOx layer, would lead to less reflection and lead to more transmission. The thickness of each of these layers may be, for example, between 1 nm and 65 nm, preferably between 3 nm and 50 nm, more preferably between 4 and 40 nm, more preferably between 5 nm and 30 nm, more preferably between 6 nm and 25 nm, more preferably between 7 nm and 20 nm, more preferably between 8 nm and 15 nm.

The more layers are used, the more parameters can be changed and / or optionally matched to a particularly flexible and / or efficient and / or accurate adaptation to the PAR area of the respective crop or plant or a high transmission in the important, as for the photosynthesis particularly efficient wavelength ranges, from 400 nm to 475 nm and from 600 nm to 700 nm to enable. The effects of certain parameters can partially or completely compensate for the effects of other parameters.

The thickness of each of these individual layers can be changed in order to achieve a particularly flexible and / or efficient and / or exact adaptation to the PAR region of the respective plant culture or the respective plant or a high transmission in the important, since for the photosynthesis particularly efficient Wavelength ranges, from 400 nm to 475 nm and from 600 nm to 700 nm. In addition, each of these layers can be produced, for example, by sputtering or vapor deposition.

Furthermore, a functional layer may also comprise a layer which influences the proportion of diffused transmitted light or diffused transmitted light. By way of example, such a functional layer may comprise, for example, a roughened glass pane or a frosted glass pane, a translucent pane of glass with pigments, a pearled glass pane, a roughened polymer film or a translucent polymer film. The more roughened the glass pane or film, the higher the proportion of diffused transmitted light. In addition, the proportion of diffuse transmitted light can be varied based on the motif or the structure of the Nörgl glass. Alternatively, the proportion of diffuse Transmitted light can also be varied by using a different translucent polymer material or by changing the proportion or type of the pigments in and / or on the polymer material or in and / or on the glass pane. For example, a translucent PVB film can be used as a functional layer in order to increase the proportion of diffused transmitted light or diffused transmitted light.

In the context of the present invention, translucent can describe the partial translucency of a body with simultaneous scattering and, in particular, volume scattering of the translucent light beams. In contrast to transparency, one can describe translucency as translucency and transparency as visual or visual transparency. The volume scattering can arise, for example, in that translucent bodies are partially translucent. In contrast to opaque bodies, they do not only reflect incident light directly on their surface, but partly only after it has penetrated the body. In this case, the volume scattering results from the fact that the light is reflected not only at the entry point with an angle equal to the entrance angle in the opposite direction, but at any point in any direction with an arbitrary angle due to the reflection emerges, so that the possibly existing parallel orientation the light rays of the incoming light is disturbed.

The proportion of diffused transmitted light or diffused transmitted light may be between 0% and 100%, preferably between 5% and 95%, more preferably between 10% and 90%, more preferably between 15% and 85%, more preferably between 20% and 80%, more preferably between 25% and 75%, more preferably between 30% and 70%, more preferably between 35% and 65%, more preferably between 40% and 60%, particularly preferably between 45% and 55%.

Thanks to various materials and parameters, such as the roughness, the use of pigments and / or the type of pigments and / or the proportion of Pigments, the proportion of diffused transmitted light or diffused transmitted light can be very well approximated to the optimum for the respective crop or for the respective plant.

In a particular embodiment of the greenhouse system according to the invention, at least one functional layer, which influences the proportion of diffused transmitted light or diffused transmitted light, can be arranged within the laminated safety glass pane. This is possible because, for example, a translucent PVB film as a functional layer, which influences the proportion of diffused transmitted light or diffused transmitted light, can be used. In the process, this translucent PVB film bonds both glass panes of the laminated safety glass as tightly together as a transparent PVB film.

In a particular embodiment of the greenhouse system according to the invention, at least one functional layer can be applied to a glass pane of the glazing of the greenhouse system which is close to the outside of the greenhouse system and in particular to the inside of this glass pane. As a result, the insulation of the interior of the greenhouse system can optionally be improved or transmission in the IR range can be reduced. The special arrangement of the functional layer may optionally reduce the warming of the interior of the greenhouse system, for example, strong light radiation, since less IR radiation penetrates into the greenhouse system.

In a further particular embodiment of the invention

Greenhouse system, at least one functional layer can be applied to a pane of glass of the greenhouse system glazing, which is close to the interior of the greenhouse system, and in particular to the inside of this glass pane. As a result, the insulation of the interior of the greenhouse system can optionally be improved or transmission in the IR range can be reduced. Due to the special arrangement of the functional layer can optionally be the cooling of the interior of the greenhouse system for Example, low light irradiation and / or reduced at low outdoor temperatures, since less IR radiation leaves the greenhouse system.

In a further particular embodiment of the greenhouse system according to the invention, at least a part of the glazing of the

Greenhouse system at least two parallel and interconnected glass sheets, which form at least one closed space, and in particular comprise a glazing. In this case, at least two glass sheets arranged in parallel and interconnected, which form at least one closed intermediate space, are arranged at a distance from one another to form an insulating glazing. In this case, one of the glass panes can also be a VSG glass pane (laminated safety glass), which comprises two glass panes firmly joined together by a polymer film and in particular by a polyvinyl butyral film (PVB film). Furthermore, at least a part of the glazing of the greenhouse system according to the invention may also comprise at least three glass panes arranged in parallel and interconnected, which form at least two closed interspaces.

In the space between the spaced glass panes of insulating glazing can prevail, for example, a vacuum or a vacuum. Alternatively, the gap between the spaced apart glass panes of the insulating glazing with a gas or gas mixture such as air, Ar, Xe, Kr or mixtures thereof may be filled. The distance between two mutually parallel spaced and interconnected glass sheets to form a glazing can, for example, between 4 mm and 30 mm, preferably between 6 mm and 20 mm, more preferably between 7 mm and 18 mm, more preferably between 8 mm and 16 mm, more preferably between 10 mm and 14 mm, particularly preferably between 12 mm and 13 mm. Characterized in that at least a portion of the glazing of the greenhouse system at least two parallel and interconnected glass sheets, which at least one sealed Forming space, and in particular comprises a glazing, the insulation of the greenhouse system can be greatly improved. Therefore, the energy costs for heating or cooling of the greenhouse system decrease.

In a further particular embodiment of the greenhouse system according to the invention, at least a part of the glazing of the greenhouse system may comprise a shatterproof layer. Preferably, a shatter-proof layer may comprise at least one polymer film arranged between two glass panes, wherein the polymer foil preferably bonds the two glass panes firmly together. As a result, the breakage of the glazing and in particular the breakthrough through the glazing, for example when entering the glazing, for example during cleaning, can be largely prevented.

In a particularly preferred embodiment of the greenhouse system according to the invention, at least a part of the glazing of the greenhouse system can comprise at least one polyvinyl butyral foil arranged between two glass panes, which preferably connects the two glass panes firmly together, so that at least a part of the glazing of the glass pane

Greenhouse system comprises at least one VSG glass pane assembly. As a result, the breakage of the glazing and in particular the breakthrough through the glazing, for example when entering the glazing, for example during cleaning, can be largely prevented. In this case, the laminated safety glass can preferably be arranged close to the outside of the glazing of the greenhouse system according to the invention.

In a particularly preferred embodiment of the greenhouse system according to the invention, at least a part of the glazing of the greenhouse system can be at least one measure for reducing the greenhouse

Include light reflection. In this case, any layer or treatment which reduces the reflection of light and in particular of light in the PAR region, as a Measure to reduce the light reflection used. In particular, for example, the surface of a glass sheet can be easily roughened to reduce reflection, for example, by etching. Moreover, for example, a layer or a layer structure based on SiO 2 and TΪO2 and in particular a four-layer structure which comprises a layer of SiO _2, an overlying layer of TiO _2, a turn disposed above layer of SiO ₂ and a finally disposed above layer TiO ₂ , or a coating with SiO 2 nanoparticles or gels thereof for reducing the light reflection can be used. By a measure to reduce the light reflection, the transmission can generally be increased so that more light falls on the plant culture. It should be taken into account that more light also means a higher cultural yield. A measure for reducing the reflection of light can be made preferably on the outside of the glazing of the greenhouse system.

In addition, the transmission can also be influenced by the thickness of the glass panes used. Thinner glass panes enable a higher transmission. However, care should be taken when using thinner glass panes that sufficient mechanical stability of the glazing is maintained.

In a particularly preferred embodiment of the greenhouse system according to the invention, at least a part of the glazing of the greenhouse system may comprise at least one layer for reducing the formation of condensed water droplets. Such a layer may comprise, for example, any hydrophobic or superhydrophobic layer. Such a hydrophobic layer may comprise, for example, hydrophobic and in particular fluorinated silanes. Through a layer for reducing the formation of condensed water drops, which can be preferably mounted on the inside of the glazing of the greenhouse system, the damage (formation of brown spots) of the cultured plants by dripping condensed water can be largely prevented. In a particularly preferred embodiment of the greenhouse system according to the invention, at least a part of the glazing of the greenhouse system can be configured such that light sources and particularly preferably light-emitting diodes and / or OLED films, which preferably emit in the PAR region of the respective plant culture, are integrated either in the glazing itself (For example, as light emitting diodes within a double glazing, in particular distributed over the surface of this glazing) or on the edge of the glazing in particular within the frame of the glazing can be attached so that they the glazing and especially the underlying plant culture (s) can irradiate. As a result, the plant growth can be stimulated even at low light, especially at night. This results in faster plant growth and higher yield.

In a particularly preferred embodiment of the greenhouse system according to the invention, the greenhouse system may comprise at least two different zones. In this case, a zone may be any part of the greenhouse system which differs from at least one adjacent part by at least one property. In particular, a zone of the greenhouse system from at least one adjacent zone may be differentiated, for example, by temperature, humidity, plant culture present, logistical design and type of glazing. This allows several different crops to be grown in a single greenhouse system under optimal conditions.

In a particularly preferred embodiment of the greenhouse system according to the invention, the greenhouse system can comprise at least two different zones with different glazings, which, if appropriate, are adapted to the plant culture located in the respective zone, thanks to different inventive functional layers. This allows several different crops in a single

Greenhouse system under optimal conditions with a high yield to be cultivated. Brief description of the drawings:

1 represents the efficiency of an electromagnetic radiation for the photosynthesis as a function of the wavelength. The PAR region usually comprises, for example, a wavelength range from 300 nm to 800 nm, preferably from 400 nm to 700 nm. Within this range, certain wavelengths carry again in a particularly efficient way for photosynthesis and thus for plant growth. The yellow / orange light in the wavelength range between approximately 550 nm and 600 nm, in particular between 600 nm and 650 nm, is particularly efficient. Also, red light in the wavelength range between about 650 nm and 700 nm is very efficient. Blue / green light in the wavelength range between about 400 nm and 475 nm is also efficient. However, green / yellow light in the wavelength range between about 475 nm and 550 nm is less efficient. Differences from plant culture to plant culture or from plant to plant should also be taken into account.

2 shows an exemplary layer structure for a functional layer, which can influence the transmission of the glazing. The layer structure comprises the following layers:

a tin oxide layer (1),

a zinc oxide layer (2) doped with aluminum,

a silver layer (3),

a NrCrOx layer (4), a tin oxide layer (5),

a ZnSnAlOx layer (6),

a tin oxide layer (7),

a zinc oxide layer (8) doped with aluminum,

a silver layer (9), an NrCrOx layer (10),

a tin oxide layer (11),

a ZnSnAIOx layer (12). 3 shows two exemplary constructions which can be used for at least part of the glazing of a greenhouse system according to the invention.

3A shows a particular embodiment of the greenhouse system according to the invention, in which at least one functional layer (12) is mounted on the inside of a glass pane (16) of the glazing of the greenhouse system which is close to the outside of the greenhouse system.

FIG. 3B shows a further particular embodiment of the greenhouse system according to the invention, in which at least one functional layer (12) is mounted on the inside of a glass pane (17) of the glazing of the greenhouse system which is close to the interior of the greenhouse system.

LIST OF REFERENCE NUMBERS

13 PVB film

14 Closed space formed within the double glazing

15, 16 and 17 glass panes

EXAMPLES

1) greenhouse system comprising an orchid culture, wherein the roof glazing of the greenhouse system comprises at least one functional layer adapted to this orchid culture. A corresponding greenhouse system according to the invention comprises as a functional layer a translucent PVB film which increases the proportion of diffused transmitted light or diffused light to approximately 50%.

This film can be attached as a functional layer while, for example, on the inside of a glass pane near the interior of the greenhouse system (in this case, the pane of the glazing system lying towards the interior of the greenhouse system) or particularly preferably within the laminated safety glass, so that the translucent PVB film both glass panes of the

VSG pane firmly connects with each other. The resulting high proportion of diffuse transmitted light or diffused transmitted light is particularly important for orchid cultures, as they grow worse in direct sunlight.

Furthermore, a corresponding greenhouse system according to the invention may comprise, as a further functional layer, a layer structure which is designed, for example, as follows:

a 17.3 nm thick tin oxide layer,

a 6.5 nm thick aluminum-doped zinc oxide layer,

a 12.8 nm thick silver layer,

a 6 nm thick NrCr layer,

a 28.5 nm thick tin oxide layer, a 9.2 nm thick ZnSnAlOx layer,

a 22 nm thick tin oxide layer,

a 6.2 nm thick aluminum-doped zinc oxide layer, a 13.2 nm thick silver layer,

a 4.9 nm thick NrCr layer,

a 10.9 nm thick tin oxide layer,

a 7nm thick ZnSnAlOx layer.

This layer structure offers high transmission in the PAR range of 400 nm to 700 nm, which is relevant for orchids, and at the same time low transmission in the IR range. This is particularly important for orchid cultures, as they are difficult to grow when exposed to high levels of IR radiation.

In this case, this layer structure can preferably be applied to the inside of a pane of glass near the outside of the greenhouse system (ie in this case the laminated safety glass pane) of the glazing of the greenhouse system. This can be a heating of the greenhouse system, for example, in strong light, which is not desirable for orchids, reduced.

This ensures optimal cultivation of the orchids.

In addition, the glass pane facing the outside of the greenhouse can be designed as a laminated safety glass pane. As a result, a burglary or a breakthrough when accidentally entering the glazing, for example when cleaning the same can be avoided.

Finally, this can face the outside of the greenhouse

Glass pane as VSG pane, which comprises two glass panes fixedly connected by a PVB film, may also be part of an insulating glazing which is formed with a pane of glass located near the inside of the greenhouse. This can improve the insulation of the greenhouse system. Each of the three glass panes used is 4 mm thick. The distance between both panes of the insulating glazing is 16 mm. The gap formed thereby is filled with an Ar / air mixture comprising 90% Ar.

Especially in the PAR range, the transmission is particularly high. The proportion of diffused transmitted light or diffused transmitted light is 50%.

2) Greenhouse system comprising a tomato culture, wherein the roof glazing of the greenhouse system comprises at least one functional layer adapted to this orchid culture.

A corresponding greenhouse system according to the invention can be described as

Functional layer comprise a layer structure, which is designed for example as follows:

a 33 nm thick tin oxide layer, a 6 nm thick aluminum-doped zinc oxide layer,

a 5.1 nm thick silver layer,

a 6 nm thick NrCrOx layer,

a 28 nm thick tin oxide layer,

a 9.2 nm thick ZnSnAlOx layer, a 26 nm thick tin oxide layer,

a 6 nm thick aluminum-doped zinc oxide layer,

a 10 nm thick silver layer,

a 4.9 nm thick NrCrOx layer,

a tin oxide layer 21 nm thick, a ZnSnAlOx layer 7 nm thick. This layer structure offers a very high transmission in the tomato-relevant PAR range from 400 nm to 700 nm with simultaneously high transmission in the IR range (for example in the wavelength range from 700 nm to 800 nm). This is especially important for tomato crops, as they are difficult to grow with too little IR radiation and / or too little heat.

This layer structure may preferably be on the inside of a glass pane close to the interior of the greenhouse system (in this case, the pane of the greenhouse system facing towards the interior of the greenhouse system)

Insulating glazing) of the glazing of the greenhouse system. As a result, the cooling of the greenhouse system, for example, at low light irradiation, which is not desirable for the tomato culture can be reduced.

In addition, a small amount of diffused transmitted light or diffused transmitted light for tomatoes is desirable because they thrive better in direct sunlight.

This ensures optimal cultivation of the tomatoes.

In addition, the glass pane facing the outside of the greenhouse can be designed as a laminated safety glass pane. As a result, a burglary or a breakthrough when accidentally entering the glazing, for example when cleaning the same, can be avoided.

Finally, this glass pane facing the outside of the greenhouse as a VSG pane, which comprises two glass panes fixedly connected by a PVB film, may also be part of an insulating glazing which is located near the inside of the greenhouse

Glass pane is formed. Each of the three glass panes used is 4 mm thick. The distance between both panes of the insulating glazing is 16 mm. The gap formed thereby is filled with an Ar / air mixture comprising 90% Ar.

Especially in the PAR range, the transmission is particularly high. The proportion of diffused transmitted light or diffused transmitted light is 0%.

Claims

claims:

1) Greenhouse system, in that it comprises at least one crop, where at least part of the glazing of the greenhouse system comprises at least one functional layer adapted to that crop.

2) Greenhouse system according to claim 1, characterized in that the functional layer influences the transmission of the glazing in at least one specific wavelength range and / or the proportion of diffused transmitted light or diffused transmitted light.

3) greenhouse system according to one or both of claims 1 or 2, in that at least part of the glazing of the greenhouse system comprises at least one metal and / or metal oxide layer.

4) Greenhouse system according to one or more of claims 1 to 3, in that at least a part of the glazing of the greenhouse system comprises at least one silver layer.

5) greenhouse system according to one or more of claims 1 to 4, characterized in that at least part of the glazing of the greenhouse system comprises at least two silver layers. 6) greenhouse system according to one or more of claims 1 to 5, characterized in that at least a portion of the glazing of the greenhouse system at least two metal and / or metal oxide layers with different

Include thicknesses.

7) Greenhouse system according to one or more of claims 1 to 6, in that at least a part of the glazing of the greenhouse system comprises at least one translucent polymer film.

8) greenhouse system according to one or more of claims 1 to 7, d a d e r c h e c e n e c e in that at least one functional layer on one of the outside of the

Greenhouse system is mounted near glass pane of the glazing of the greenhouse system.

9) Greenhouse system according to one or more of claims 1 to 8, characterized in that at least one functional layer is applied to a glass pane of the greenhouse system glazing near the interior of the greenhouse system.

10) greenhouse system according to one or more of claims 1 to 9, characterized in that at least part of the glazing of the greenhouse system comprises at least two parallel arranged and interconnected glass sheets, which form at least one closed gap. 11) greenhouse system according to one or more of claims 1 to 10, characterized in that at least part of the Vergiesung of the greenhouse system comprises at least one shatter-proof layer.

12) Greenhouse system according to one or more of claims 1 to 11, in that at least part of the glazing of the greenhouse system comprises at least one polymer film arranged between two glass panes.

13) Greenhouse system according to one or more of claims 1 to 12, in that at least a part of the glazing of the greenhouse system comprises at least one PVB film arranged between two panes of glass.

14) Greenhouse system according to one or more of claims 1 to 13, in that at least part of the glazing of the greenhouse system comprises at least one VSG glass pane arrangement.

15) greenhouse system according to one or more of claims 1 to 14, in that at least a part of the glazing of the greenhouse system comprises at least one measure for reducing the light reflection.

16) greenhouse system according to one or more of claims 1 to 15, characterized in that at least a part of the glazing of the greenhouse system is designed so that _^ at least one light source either in the

The glazing itself is integrated or attached to the edge of the glazing so that it can irradiate the underlying plant culture (s). 17) greenhouse system, characterized in that the greenhouse system comprises at least two different zones.

18) Greenhouse system according to claim 17, characterized in that the greenhouse system is a greenhouse system according to one or more of claims 1 to 16.

19) greenhouse system according to one or both of claims 17 or 18, characterized in that the greenhouse system comprises at least two different zones with different glazings, which is adapted thanks to different functional layers to the plant culture located in the respective zone.