EP2816191A2 - Élément de protection solaire intérieur pour immeuble - Google Patents

Élément de protection solaire intérieur pour immeuble Download PDF

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Publication number
EP2816191A2
EP2816191A2 EP20140168914 EP14168914A EP2816191A2 EP 2816191 A2 EP2816191 A2 EP 2816191A2 EP 20140168914 EP20140168914 EP 20140168914 EP 14168914 A EP14168914 A EP 14168914A EP 2816191 A2 EP2816191 A2 EP 2816191A2
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EP
European Patent Office
Prior art keywords
substrate
sun protection
protection element
element according
solar radiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20140168914
Other languages
German (de)
English (en)
Other versions
EP2816191A3 (fr
Inventor
Andreas Georgii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
C-Con & Co KG GmbH
Original Assignee
C-Con & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by C-Con & Co KG GmbH filed Critical C-Con & Co KG GmbH
Publication of EP2816191A2 publication Critical patent/EP2816191A2/fr
Publication of EP2816191A3 publication Critical patent/EP2816191A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds

Definitions

  • the present invention relates to an internal solar shading element for buildings for the purpose of shielding against incoming solar radiation.
  • sun protection elements are mounted in the form of curtains, slats, sliding panels or blinds on the inside of windows in buildings to protect the interior from excessive solar radiation.
  • sun protection elements are used to ensure the requirements of glare-free work and to prevent excessive heating of the interior. They also serve to minimize the energy required for the air conditioning and cooling of building interiors.
  • About 46% of the energy contained in sunlight is transported with the infrared component. In contrast, the proportion of visible light (51%) is only marginally higher.
  • Such internal sun protection elements are characterized by a certain degree of permeability to the visible light, so that a sufficient lighting is still given even when closing the sun protection elements.
  • textile-based materials such as chemical fibers are used for such sun protection elements, which have a reflective property for the visible light components of solar radiation.
  • pearly-coated textile sunscreen systems in light colors have been used which ensure a high proportion of reflection from the visible light components of solar radiation and enable a long service life without yellowing.
  • a disadvantage of these previous internal sun protection elements is that while effective glare protection is made possible by the reflection of the visible light components of the sunlight, however, an excessive warming of the interior due to light fractions in the infrared range is still present.
  • the reason for this is that the materials used so far of internal sun protection elements, such as chemical fibers with a pearlescent coating, for the light components in the infrared range are largely permeable, so that the interior of the building despite the sunscreen closed element still warms up excessively. This leads to increased costs in terms of air conditioning and the necessary cooling, for example, in offices.
  • sun protection elements as, for example, curtains are known, which are vapor-deposited with a metallic material, such as aluminum.
  • a metallic material such as aluminum.
  • this material is susceptible to oxidation damage when in contact with moisture or weak alkalis.
  • such aluminum-coated curtains are comparatively sensitive to pressure and, as a rule, are not kink-resistant.
  • a solar shading element for the shielding of solar radiation in the interior of buildings is proposed with a base of a textile or textile-like material, wherein the base body against visible light, ie the light components of the solar radiation in the visible range, at least partially transparent and a predetermined Transmittance rate for visible light components of solar radiation, wherein the sun protection element characterized in that the base body is provided on its outer surface with a substrate which reflects light components in the visible region to a high proportion of at least 60% and in the interior has a material which additionally contains light of the sunlight in the infrared to a proportion of reflected at least 50% of the incident solar radiation.
  • the substrate on the outer surface of the textile base body according to the present invention is specifically selected and formed not only for reflection of visible light, but additionally has the functionality of reflection of light components in the infrared region, so that the incident solar heat radiation to a high proportion can be reflected by the sun protection element. An excessive heating of the interiors of buildings is thus effectively avoided. Nevertheless, the sun protection element as a whole is permeable to the visible solar radiation, so that enough light for the illumination of the rooms can penetrate while ensuring a glare-free workstations. With the sun protection element according to the invention, in particular, the solar near-infrared radiation (NIR) can be reflected to a high degree, so that overall the energy expenditure for space cooling and any artificial lighting can be significantly reduced.
  • NIR solar near-infrared radiation
  • sunscreen element of the invention has the further advantage that no adverse optical effects arise: The reflection of light in the infrared occurs in the interior of the substrate and thus avoids any reflections or a gloss impression, as it is given in externally coated with aluminum sunscreen elements.
  • An element specially adapted for the shielding of infrared light is off EP 1 941 996 A1 known.
  • a textile film composite is used, wherein on a film in advance pigments are applied for the reflection of light fractions in the infrared range. Due to the uniform distribution of the pigments thus applied to the film, a sufficient permeability for light components in the visible range is achieved.
  • the disadvantage here is that an additional element, namely an intermediate film, is required for this film composite.
  • the pigments for the shielding of infrared light are usually provided with negative optical properties, so that it can lead to unwanted reflections.
  • Such a textile film composite leads to a strong sparkle when the solar radiation impinges on such elements.
  • a further advantage of the sun protection element according to the invention is that the technical properties of the sun protection elements are essentially unaffected by the substrate on the outer surface and the sun protection element can meet the criteria, in particular with respect to a skew behavior, a bowl inclination or a yellowing behavior as required.
  • the transmission or transmission rate for the visible sunlight can be selectively changed as needed, for example to allow an individual adjustment of the permeability at different workstations in a large office or the like.
  • the substrate, which according to the present invention is applied to the outer surface of the base body made of textile material, has on its outside a reflection property for the visible light components of Solar radiation, in which case the light components are essentially transmitted in the infrared range.
  • the substrate can be selected such that no negative optical properties occur and the sunscreen element, for example, has a white outer appearance.
  • the substrate on the outside may consist of a titanium dioxide, so that the material of the main body of the sun protection element has an overall white appearance and reflects visible light on the outer surface.
  • the reflection of infrared rays according to the invention then takes place only subsequently in the interior of the substrate by means of corresponding materials or pigments which have the property according to the invention of a reflection of solar radiation in the infrared range.
  • the substrate on the surface of the sun protection element of coated metal particles which are applied to the textile material of the base body.
  • the method of applying the substrate may be, for example, padding (full bath impregnation), doctor blading, coating, laminating, spraying, printing or the like.
  • the sun protection element consists of a base body made of a textile material, for example a material made of chemical fibers, to which then the specific coated metal particles of the substrate are applied from the outside. Since the body consists of a textile material, is a total of a certain Permeability to visible light given because the textile material is quasi provided with passages or holes.
  • the textile material of the body itself may have a certain permeability to visible portions of solar radiation, so be virtually transparent to some extent.
  • the substrate on the surface of the main body of the sun protection element on the one hand, a reflection of the light components in the visible range and, on the other hand, a reflection of solar heat radiation is achieved due to the coated metal particles.
  • the mechanical properties of the sun protection element are substantially maintained, in particular as regards the resistance to pressure and the buckling stability.
  • the substrate comprises pigments of a metal or a metal oxide, which are coated.
  • These pigments of metal or metal oxide ensure a high degree of reflection for light radiation in the infrared region inside the substrate, so that a good radiation of incoming solar thermal energy is made possible with the sun protection element.
  • a further advantage of a substrate made of coated metallic pigments is that the application to the basic body made of textile material can be carried out comparatively easily with different methods. For example, the substrate may be sprayed, padded, or coated to provide a uniform, sufficient amount of substrate over the substrate entire surface of the sunscreen element can be applied across.
  • the substrate has infrared-reflecting pigments.
  • the substrate according to the invention pigments of titanium dioxide, silica or alumina, chromium, manganese, zinc, cobalt and nickel and / or their oxides. These pigments have no adverse optical effects on the sunscreen because they are coated on the outside of the substrate while still providing good reflection of infrared radiation.
  • the substrate is composed of at least two layers, of which the outer layer for light components in the infrared range is substantially transparent and for the visible light to a high degree, in particular at least 60%, reflective. From the incident solar radiation, which passes through the open textile structure of the body to a certain extent in the interior of the room, thus a high proportion of the heat radiation as well as the light in the visible range can be reflected. In this case, the infrared light is almost only reflected in the interior of the substrate by the specific structure and the use of specific materials, whereas the radiation in the visible region on the outside is reflected by the outer layer of the substrate.
  • the sun protection element means are provided for the targeted change of a transmission rate for visible light components of the solar radiation.
  • the transmission behavior for light of the sun protection element can be adjusted individually and as needed variable.
  • a pleasant room illumination can be adjusted as needed.
  • Such a means for changing a passage rate can for example be installed directly in the textile material of the base body, for example, by the size of the passages can be variably adjusted.
  • a change in the transmission can also be effected by separate means which effect an adjustment or structural change of the sun protection element.
  • the textile material of the base body is formed from chemical fibers, which are coated with the substrate at least on one side.
  • the textile material of the basic body forms, as it were, the basic structure which provides the mechanical properties of the sun protection element, for example the resistance to pressure and flexural strength, whereas the substrate applied to the synthetic fibers provides the effects according to the invention of a reflection of solar radiation in the visible range and additionally in the infrared light range ,
  • the textile material of the body consists of temperature-dependent changing material, such that the transmission rate for visible light changes automatically from a certain temperature.
  • the textile material of the body consists of temperature-dependent changing material, such that the transmission rate for visible light changes automatically from a certain temperature.
  • yarns are used which expand or contract at a certain temperature.
  • the substrate is shaped such that the base body has an at least partially retroreflective property.
  • the incoming solar radiation is not diffusely reflected, but quasi-reflected back to the radiation source back.
  • the strength of the shielding of the sunshade element in particular with respect to the heat radiation in the infrared range, can be further increased. A lateral radiation of heat radiation into the interior of the building is thereby prevented.
  • the substrate has substantially hemispherical pigments.
  • the sun protection element can be provided with a specific form of reflection: the direction of the reflection can hereby be changed in a targeted manner and, for example, a so-called retroreflection can be achieved.
  • the substrate is embossed in a specific surface shape.
  • the substrate is processed by means of an embossing process, as it were, after application to the base body, so that a special surface shape is formed on the outside of the sun protection element.
  • a specific surface shape truncated pyramidal shapes can be formed in the substrate, by which a good reflection of the incoming sunlight can be achieved even in a sun obliquely to the sun protection element, for example in the morning hours.
  • the figure shows in section a sun protection element 1, which is arranged in the vertical direction between the ceiling and floor of an interior.
  • projections 5 are designed so that when the sun is low (see the arrows 7), a relatively large proportion of the visible light passes through the sun protection element 1 and thus illuminates the interior.
  • the projections 5 reflect a relatively large proportion of the light and thereby reduce the heating of the interior.
  • the coating can also be attached to the interior of the room facing the interior of the sun protection element in the mounted state.
  • the sun protection elements can also be turned at the beginning and at the end of the heating season. Then it is effectively prevented, especially in the heating period, that IR light from the interior of the room gets into the environment. This leads to a reduction of the heating energy requirement.
  • the inner sun protection element according to the invention has a main body made of a textile material, which is made of chemical fibers.
  • the man-made fibers are interwoven into a stable basic body, which already offers a certain permeability to light due to its holey structure.
  • the sun protection element hereby ensures a certain shielding of the interior from incoming solar radiation without causing too much darkening.
  • the requirements of, for example, office space in terms of glare-free computer workstations are thus achieved without the need for additional artificial lighting.
  • On the body of the textile chemical fibers is a Substrate applied by padding, spraying, coating, printing or laminating.
  • the substrate is characterized by having a visible light reflectance of at least 60% and a reflectance of infrared light fractions of at least 50% due to the choice of materials and / or the structural configuration of the substrate.
  • the substrate is formed internally of pigments of a metal or metal oxide, such as alumina.
  • the pigments of metal or metal oxide are provided on their outside with a specific coating, which may for example consist of titanium dioxide.
  • a specific coating which may for example consist of titanium dioxide.
  • titanium dioxide By the titanium dioxide, a high degree of whiteness of the sunscreen element is achieved, and on the outside there is a high reflection of light in the visible range, for example, a reflection of at least 60%.
  • the solar thermal radiation of sunlight passes through the outer coating of titanium dioxide and is then reflected in the interior due to the pigments of metal or metal oxide. A reflection of the infrared component of the incident sunlight takes place according to the inventive sun protection element to a high percentage, at least 50%.
  • the pigments of metal oxide or metal are chosen and applied to the textile material of the base body, that in particular light in the range of 800 to 2500 mm, so-called near infrared light, can be effectively reflected. In this way it is prevented that the solar thermal radiation penetrates excessively into the interior of the room. An increased energy demand due to a necessary cooling and air conditioning of the rooms of a building is thus avoided.
  • the sunshade element according to the invention can be embodied in various forms: for example as a curtain, as lamellae, as sliding panels, stoppers, etc.
  • the sunscreen element of the invention provides sufficient permeability for light in the visible range, and only to a certain extent the visible light is reflected.
  • the incident solar radiation in the infrared range the so-called solar heat radiation, effectively shielded from the sunscreen.
  • the sun protection element is provided with means for selectively changing a transmission rate for the visible light components of the solar radiation.
  • the change in the transmission can be realized, for example, via specific chemical fibers, which either expand or contract depending on the temperature, so that in the case of strong solar radiation and thus increased temperature, the transmission rate for the light changes automatically.
  • specific chemical fibers which either expand or contract depending on the temperature, so that in the case of strong solar radiation and thus increased temperature, the transmission rate for the light changes automatically.
  • the openings in the textile material become more closed, thereby automatically reducing the transmission rate of light.
  • the sun protection element according to the invention as well as living rooms and offices can be equipped so that the requirements of shielding against solar radiation, which is particularly required in offices due to the absence of glare on screens, can be safely accomplished.
  • the sun protection element according to the invention has a high light and color fastness, and there are no negative optical effects, such as a reflection or glitter, as was the case in the prior art in so-called aluminum-coated sunscreen systems.
  • the sun protection element can be easily carried out in various forms, and the mechanical requirements for such sun protection elements as the compressive strength, the buckling stability, the skewing behavior, for example in blinds, etc. can be maintained.
  • an additional function is incorporated virtually in the interior of the substrate, namely the function of the reflection of incoming solar heat radiation due to the type of material and the structure of the substrate, for example of coated pigments of metal oxide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
EP14168914.1A 2013-06-19 2014-05-20 Élément de protection solaire intérieur pour immeuble Withdrawn EP2816191A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310211532 DE102013211532A1 (de) 2013-06-19 2013-06-19 Innenliegendes Sonnenschutzelement für Gebäude

Publications (2)

Publication Number Publication Date
EP2816191A2 true EP2816191A2 (fr) 2014-12-24
EP2816191A3 EP2816191A3 (fr) 2015-07-22

Family

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Family Applications (1)

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EP14168914.1A Withdrawn EP2816191A3 (fr) 2013-06-19 2014-05-20 Élément de protection solaire intérieur pour immeuble

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EP (1) EP2816191A3 (fr)
DE (1) DE102013211532A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016102363A1 (de) * 2016-02-11 2017-08-17 Wenko-Wenselaar Gmbh & Co. Kg Duschvorhang mit wechseldesign

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1941996A1 (fr) 2007-01-04 2008-07-09 Junkers & Müllers GmbH Film textile composite, en particulier destiné au recouvrement d'ouvertures architectoniques, et son procédé de fabrication

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011053C2 (de) * 2000-03-07 2002-06-20 Freudenberg Carl Kg Textiles Lichtschutzmaterial
JP6074128B2 (ja) * 2010-04-15 2017-02-01 デクセリアルズ株式会社 光学体およびその製造方法、日射遮蔽部材、窓材、内装部材ならびに建具
ES2730948T3 (es) * 2010-12-03 2019-11-13 3G Mermet Corp Composición reflectante del infrarrojo cercano y cubiertas para aberturas arquitectónicas que incorporan la misma
US9045933B2 (en) * 2011-06-06 2015-06-02 The Board Of Trustees Of The University Of Illinois Energy-efficient smart window system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1941996A1 (fr) 2007-01-04 2008-07-09 Junkers & Müllers GmbH Film textile composite, en particulier destiné au recouvrement d'ouvertures architectoniques, et son procédé de fabrication

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Publication number Publication date
EP2816191A3 (fr) 2015-07-22
DE102013211532A1 (de) 2014-12-24

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