WO2006125874A1 - Vitrage isolant, notamment pour ouvrant d'enceinte refrigeree - Google Patents
Vitrage isolant, notamment pour ouvrant d'enceinte refrigeree Download PDFInfo
- Publication number
- WO2006125874A1 WO2006125874A1 PCT/FR2005/050744 FR2005050744W WO2006125874A1 WO 2006125874 A1 WO2006125874 A1 WO 2006125874A1 FR 2005050744 W FR2005050744 W FR 2005050744W WO 2006125874 A1 WO2006125874 A1 WO 2006125874A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glazing
- coating
- gas
- substrates
- less
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0404—Cases or cabinets of the closed type
- A47F3/0426—Details
- A47F3/0434—Glass or transparent panels
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
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- 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
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
- Y10T428/1317—Multilayer [continuous layer]
- Y10T428/1321—Polymer or resin containing [i.e., natural or synthetic]
Definitions
- the invention relates to an insulating glass for the opening of a refrigerated enclosure, enclosure in which are exposed cold or frozen products, such as food products or drinks, or any other products requiring conservation in the cold, for example pharmaceuticals or even flowers.
- the insulating glazing consists of at least two glass substrates separated by a gas strip and provided for at least one of them with a low emissive coating.
- Another important problem is also the formation of steam, or even frost on the inside of the opening when opening the window to take the goods.
- the surface of the inner glass substrate which was found at a very low temperature, or even below 0 ° C, is then in contact with the ambient atmosphere, much more loaded with moisture, and at a temperature well higher ; the temperature of the inner substrate is then lower than the dew point temperature, which causes a condensation phenomenon on the substrate, or even frost when the temperature of this substrate is negative.
- the presence of fog or frost hinders the visibility of the goods, and it takes several minutes, or even tens of minutes, to obtain a total disappearance of fog or frost.
- insulating glazing with enhanced thermal insulation property namely double or triple glazing provided with one or more low emissive coatings, and whose substrate in contact with the inside of the enclosure is heating.
- This type of insulating glazing consists of a triple glazing comprising three glass substrates 3 mm thick, spaced by gas strips of the same thickness of 8 or 13 mm and consisting of air, argon or krypton, two low emissive coatings being disposed on the faces 2 and 5 of the glazing (counting from the outermost face of the glazing in the closed position on the enclosure).
- the glazing has according to this document a coefficient of heat transfer U less than or equal to 0.2 BTU / hr.sq.ft.F or 1.1 1 W / m 2 .K. It is recalled that 1.0 W / Km 2 corresponds to 0.18 BTU / hr.sq.ft.F.
- the improvement of the heat transfer coefficient U ensures, in the closed position of the opening, the outer surface to be relatively hot compared to the temperature it could present due to the existing cold environment at its opposite; this outer surface, store side, is thus at a temperature greater than the dew point which prevents fogging on this outer surface when the showcase is closed, not requiring a heating element on the outer substrate.
- the various functional layers used degrade in a known manner the light transmission of the glazings.
- lights that, in addition to the extra energy expended, necessarily lead to a release of heat may degrade the freezing quality of exposed products in the storefront and lead to additional energy consumption of the corresponding refrigeration unit.
- the object of the invention is therefore to provide an optimal solution of insulating glazing with enhanced thermal properties intended to be used for a refrigerated showcase, a solution which avoids any formation of mist or ice, even in difficult conditions of external and internal ambiences. and frequency and opening time of the showcase corresponding to the time required to use or replenish goods in the showcase, and which is effective in term energy saving and ensures quality and comfort of visibility of the products arranged in said showcase.
- interior and exterior we mean the qualifiers of the elements which are turned inwards or outwards respectively of the refrigerated enclosure when the opening is in the closed position.
- the insulating glazing unit intended in particular for a refrigerated enclosure opening comprises at least two glass substrates, at least one interlayer with a low thermal conductivity which keeps the two substrates spaced apart, a low emissive coating which is deposited at least in part on at least one of the substrates, characterized in that
- the interlayer has a thermal conductivity of less than 1 W / m ⁇ K, preferably less than 0.3 W / m ⁇ K, the space between at least two substrates is filled with at least one rare gas,
- the glazing is devoid of a heating element
- the glazing has a coefficient of thermal conductivity U of less than 1.2 W / m 2 .K, preferably less than 1.15 W / m 2 .K with a gas filling of at least 85%, the glazing present a light transmission of at least 67% and a light reflection of less than 18%,
- the glazing further comprises an anti-icing coating deposited on at least part of the outer face of a substrate.
- the gas is chosen from argon, krypton and xenon.
- a low-emissive coating is at least disposed on the face 2 and / or 3 and / or 4 of the glazing.
- the faces of a glazing of 1 to 4 are numbered for a double glazing or of 1 to 6 for a triple glazing, the faces of the glazing such as the face 1 corresponds to the outer surface of the glazing in contact with the ambient atmosphere, while the face 4 or 6 respectively corresponds to the surface in contact with the refrigerated enclosure.
- an antireflection coating is deposited on at least one of the substrates, preferably face 1 and / or face 3, and / or face 5 of the glazing.
- the insulating glazing is a triple glazing comprising three glass substrates, a first substrate whose outer face is intended to be in contact with the inside of the enclosure in the closed position of the opening, a second substrate or intermediate substrate, and a third substrate whose outer face is intended to be in contact with the external environment of the enclosure, and separated from each other by the interlayer with low thermal conductivity, - the thickness substrates being between 2 and 5 mm, and preferably equal to 3 or 4 mm,
- the thickness of the gas strips being at least 4 mm, a low emissivity coating being deposited on face 2 and / or 4 of the glazing,
- the anti-icing coating being deposited on at least part of the external face of the third substrate
- the glazing having a coefficient of thermal conductivity U of less than 1.1 W / m 2 .K, or even less than 0.95 or 0.80, with a gas filling of at least 85%;
- the glazing has a light transmission of at least 67% and an external light reflection of less than 18%.
- the triple glazing comprises a low emitting coating on the faces 2 and 4, and has a thermal transfer coefficient U of less than 1.0 W / m 2 .K.
- the low emissive coating is deposited on the face of the glazing unit associated with the thickest gas blade.
- At least one antireflection coating is deposited on one of the faces of the glazing, preferably on at least one of the faces, 1, 3 or 5.
- one of the blades of gas has a thickness of 8 mm, while the other gas strip has a thickness of at least 10 mm, the gas blades being argon.
- one of the gas strips is krypton and has a thickness of 8 mm, while the other gas strip is air and has a thickness of at least 10 mm.
- the insulating glazing is a double glazing comprising two glass substrates, a first substrate whose outer face is intended to be in contact with the inside of the enclosure in the closed position of the opening, a second substrate whose outer face is intended to be in contact with the external environment of the enclosure, separated from each other by the interlayer with low thermal conductivity, the space between the substrates being filled with a rare gas ,
- the thickness of the substrates being equal to 3 or 4 mm
- the space between the substrates being filled with at least one rare gas
- the thickness of the gas strip being at least 8 mm
- a low emissivity coating being deposited at least on face 2 of the glazing unit, the anti-icing coating being deposited on at least part of the external face of the first substrate,
- the glazing having a coefficient of thermal conductivity U of less than 1.15 W / m 2 .K with a gas filling of at least 85%;
- the glazing having a light transmission of at least 75% and an external light reflection of less than 12%.
- another low emissive coating is deposited in face 3 of the glazing according to this second embodiment.
- the gas blade is krypton.
- the gas strip is xenon with a thickness of 8 mm.
- the double glazing comprises in face 1 and / or 3 an anti-reflection coating, and has a light transmission of more than 80% and an external light reflection less than 10%.
- the anti-icing coating is such that, when the glazing provided with the anti-icing coating is brought into contact, on the coating side with a temperature environment falling down to at most -30 ° C., in particular -15 ° C, -18 ° C or -24 ° C, then set contact with an atmosphere with a temperature of at least 0, preferably between 10 and 35, especially 15 and 30 and in particular 23 and 27 ° C and with at least 25% residual moisture, no frost forms during 12 s at least, preferably at least 1 min, in particular at least 2 minutes, or as long as at least 3 minutes.
- This anti-icing coating comprises an antifreeze compound lowering the crystallization temperature such as a salt, in particular KCl, NaCl or equivalent in solution and / or an alcohol and / or a suitable hydrophilic polymer, copolymer, prepolymer or oligomer, optionally in water and optionally one or more surfactants, this compound possibly having a hydrophobic character on a part of its surface.
- an antifreeze compound lowering the crystallization temperature such as a salt, in particular KCl, NaCl or equivalent in solution and / or an alcohol and / or a suitable hydrophilic polymer, copolymer, prepolymer or oligomer, optionally in water and optionally one or more surfactants, this compound possibly having a hydrophobic character on a part of its surface.
- the antifreeze compound is associated with at least one other compound so as to obtain a physical or chemical interaction to ensure a mechanical reinforcement of the coating.
- This antifreeze is for example polyvinylpyrrolidone which is associated with a polyurethane so as to create a physical interaction, or it may be a polyol which is associated with at least one isocyanate function so as to create a chemical interaction.
- the interlayer disposed between the substrates comprises, according to one embodiment, a first sealing barrier consisting of a thermoplastic body, of the styrene acrylonitrile (SAN) or polypropylene type, mixed with fibers. reinforcement, glass type, and a metal sheet, of the aluminum or stainless steel type, partly covering the thermoplastic material, and a second liquid and vapor-proofing barrier of the polysulfide type.
- SAN styrene acrylonitrile
- the spacer is constituted on at least a portion of the periphery of the glazing of a substantially flat profile which is secured to the slices of the substrates and consists of stainless steel, aluminum or aluminum. plastic material reinforced with reinforcing fibers, and comprising on the face opposite to the gas strip a metal coating constituting a barrier against vapor, gases and liquids. Also, the interlayer has a linear buckling resistance of at least 400 N / m.
- At least the outer substrates of the insulating glazing unit of the invention are made of toughened glass.
- Such insulating glass above characterized is advantageously used as an opening, in particular for a refrigerated enclosure.
- the opening comprises, to support the glazing, a frame formed of aluminum thermal break, it advantageously has a coefficient U w of global heat transfer less than 1.25 W / m 2 .K for a gas filling at least 92%.
- the opening comprises a frame formed of PVC, it has an overall heat transfer coefficient U w less than 1.20 W / m 2 .K for a gas filling of 92%.
- U w the overall heat transfer coefficient
- the inventors have thus highlighted the type of combination of the various characteristics of the glazing that must be implemented to ensure an optimal solution as to the thermal insulation performance of the glazing, the light transmission of the glazing, and the non-fogging and frost, respectively, on the outer and inner faces of the glazing, when used as an opening in a refrigerated enclosure.
- the invention thus relates to the combination of a set of characteristics of the glazing that are, in particular, the thickness of the gas strip, the type of gas, the type of interlayer, the types of functional coating used and their location, and the heat transfer coefficient value of the glazing as well as the presence of an anti-icing layer.
- FIG. 1 illustrates, according to a first embodiment of the invention, an insulating triple glazing 10 filled with gas, devoid of a heating element and comprising at least one low-emission coating 30 and an anti-icing coating 40, exhibiting a heat transfer coefficient U less than 1.2 W / m 2 .K, preferably less than 1.15 W / m 2 .K with a gas filling rate of at least 85%, and a light transmission rate at least 67%, associated with a light reflection of less than 18%.
- the triple glazing 10 comprises three glass substrates, a first substrate or inner substrate 11 whose outer face January 1 is intended to be in contact with the interior of the enclosure in the closed position of the opening, a second substrate or intermediate substrate 12, and a third substrate or outer substrate 13 whose outer face 13a is intended to be in contact with the external environment to the enclosure.
- the first and third substrates 11 and 13 are preferably tempered glass.
- the faces of the substrates are denoted from 1 to 6 and referenced in the figures
- each of the substrates is between 2 and 5 mm, and it is preferably 3 or 4 mm in order to minimize the overall weight of the glazing and to optimize the light transmission.
- the substrates are separated from each other by an interlayer 50 with a low thermal conductivity, the interlayer possibly consisting of two distinct elements or of a single element straddling the intermediate substrate.
- This spacer has a coefficient of thermal conductivity of at most
- 1 W / m.K (or 1.88 BTU / hr.ft.F), preferably less than 0.7 W / m.K, and even less than 0.4 W / m.K. It is recalled that 0.534 W / m.K corresponds to 1 BTU / hr.ft.F.
- An example of a spacer comprises a base body which is made of a thermoplastic material, of the styrene acrylonitrile (SAN) or polypropylene type, and reinforcing fibers, of glass type, which are mixed with the thermoplastic material, as well as a metal sheet sealing the gases and water vapor which is adhered to a portion of the base body, part intended to be disposed opposite the interior space of the glazing.
- the base body further including a desiccant, is deposited at the periphery and in the separation space, between the substrates.
- An additional sealing barrier against liquids and steam ensuring the sealing of the interlayer and consisting for example of polysulfide, polyurethane, or silicone, is disposed on the side of the metal sheet of the interlayer.
- Such an interlayer which is based on SAN and glass fibers, is known for example under the trade name SWISSPACER ® from the company SAINT-GOBAIN GLASS when the metal sheet of the base body is aluminum, and under the name SWISSPACER V ® when the metal sheet of the base body is made of stainless steel, and which associated with a double polysulfide barrier, has a coefficient of thermal conductivity of 0.64 W / mK (or 1, 20 BTU / hr.ft.F) for the SWISSPACER ® and 0.25 W / mK (or 0.47 BTU / hr.ft.F) for the SWISSPACER V ® .
- interlayer the insert described in the application WO 01/79644 which consists of a substantially flat profile disposed not on the inside of the glazing but on the outside, integral with the slices of substrates.
- This profile can be based on stainless steel, or aluminum or plastic reinforced with reinforcing fibers, its linear resistance to buckling is at least 400 N / m.
- This type of interlayer has at least on one of its faces a sealing barrier against gases, dusts and liquids constituted by a metal coating or any other suitable material.
- the interlayer is for example made entirely of aluminum, 0.5 mm thick and has a coefficient of thermal conductivity of 0.25 W / m.K (or 0.47 BTU / hr.ft.F).
- the space between the inner substrate 11 and the intermediate substrate 12 is constituted by an inner gas slab 14, and the space between the outer substrate 13 and the intermediate substrate 12 is constituted by an outer gas slab 15, the thickness gas strips being at least 4 mm and adapted according to the desired performance of the heat transfer coefficient U, without however being greater than 16 mm.
- At least one of the gas slats consists of a rare gas which is selected from argon, krypton or xenon, with a fill ratio of at least 85%. For a still improved U coefficient, it will be preferred a filling with at least 92% krypton or xenon.
- one of them may be air, and in this case the thickness of the air gap is at least 10 mm.
- the glazing comprises a low-emissive coating 30 disposed on at least part of the face 13b of the outer substrate 13 facing the inside of the glazing
- Low-emissive coatings could also be provided on faces 2 and 3. And when a single coating is simply provided, it is preferably disposed on the surface associated with the thickest gas blade thickness.
- the low emissivity coatings are based on layers of metal and metal oxides which can be obtained by different processes: by vacuum processes (thermal evaporation, cathodic sputtering, magnetron sputtering) or by pyrolysis of organometallic compounds projected by a carrier gas in liquid, solid or gaseous form on the surface of the heated substrate.
- the metal layers are based on silver
- the metal oxide layers are based on compounds of zinc, tin, titanium, aluminum, nickel, chromium, antimony (Sb ), nitrides or a mixture of at least two of these compounds, and optionally blocking layers such as a blocking metal or a metal blocking alloy, of the Ti type, in an upper layer of silver.
- the type of coating allows a suitable compromise between the optical quality of the substrate, in particular concerning its light transmission in the visible, and its quality of reflection in the infrared.
- the low emissivity coating used in the glazing unit of the invention has an emissivity of less than or equal to 0.3, preferably less than or equal to 0.05, and a light transmission of greater than 75%, preferably greater than 85%.
- PLANITHERM ® FUTUR N product of the company SAINT-GOBAIN GLASS which has 4 mm thick glass with an emissivity of 0.04 and a light transmission of 88, 4%.
- Another product also suitable according to the invention is the PLANITHERM ULTRA ® of the company SAINT-GOBAIN GLASS having glass 4 mm thick an emissivity of 0.02 and a light transmission 86.7% - With such a product used for one or all substrates, the U coefficient may be even better in terms of insulation than the product PLANITHERM ® FUTUR N but the glazing will lose slightly in light transmission.
- At least one antireflection coating 32 may be provided on one or more substrates, preferably face 1 and / or 3 and / or 5, which has the advantage, in addition to its antireflection function, of to increase the light transmission of the glazing and to ensure even better visibility of the products in the showcase.
- the glazing comprises an anti-icing coating 40 associated with the outer face 11a of the inner substrate 1 1.
- This coating may be a layer deposited directly on the substrate or deposited on a plastic film secured to the substrate.
- this anti-icing coating makes it possible, when the glazing provided with the anti-icing coating is brought into contact, on the coating side, with a temperature ambience falling down to at most -30 ° C., in particular -15 ° C., -18 ° C. or 24 ° C, then brought into contact with an atmosphere at a temperature of at least 0, preferably between 10 and 35, especially 15 and 30 and in particular 23 and 27 ° C and with at least 25% residual moisture, no frost is formed for at least 12 s, preferably at least 1 min, in particular at least 2 min, or as long as at least 3 min.
- the anti-icing coating is adsorbent and absorbent.
- the coating is absorbent (hydrophilic) because the water molecules penetrate into it to be so absorbed.
- the coating comprises an antifreeze compound lowering the crystallization temperature such as a salt, in particular KCl, NaCl or equivalent in solution and / or an alcohol and / or a suitable hydrophilic polymer, copolymer, prepolymer or oligomer, optionally in water, and optionally one or more surfactants, this compound possibly having a hydrophobic character on part of its surface.
- an antifreeze compound lowering the crystallization temperature such as a salt, in particular KCl, NaCl or equivalent in solution and / or an alcohol and / or a suitable hydrophilic polymer, copolymer, prepolymer or oligomer, optionally in water, and optionally one or more surfactants, this compound possibly having a hydrophobic character on part of its surface.
- the antifreeze compound makes it possible to create bonds between said compound and the water molecules, preventing water molecules from binding together and forming water crystals constituting frost.
- alcohols in the antifreeze compound are especially used ethanol, isopropanol.
- the hydrophilic polymers, copolymers, prepolymers or oligomers constituting the solution are especially based on polyvinylpyrrolidone of the poly (n-vinyl-2-pyrrolidone) or poly (1-vinyl pyrrolidone) type, polyvinylpyrridine of the poly (n-vinyl-2 pyridine) type.
- the copolymers are based on at least one of the monomers constituting these polymers.
- the choice of hydrophilic polymer and porosity allows in particular to adjust the speed and the water absorption capacity.
- the porosity of the layer is advantageously between 0.1 and 100 cm 3 / g and preferably less than 20 cm 3 / g. Porosity defines the void volume of the pores per unit mass of the layer.
- surfactants there may be mentioned compounds comprising a lipophilic part Y, which may be a linear, branched or unsaturated aliphatic chain or an aromatic or alkylaromatic chain, and an ionic hydrophilic head or not.
- cationic surfactants Y - (R) n NH + (4 - n ), X " ; Y - R 4 N + , X " ; alkyltrimethylammonium; alkylbenzyldimethylammonium; imidazolinium salts; amine salts; - zwitterionic: Y - N + CO 2 " ; Y - N + SO 3 " ; betaines; sulfobetaines; imidazolium salts;
- Y - OR Y - OH; Y - CO 2 R; Y - CONHR; Y - (CH 2 " CH 2 - O) n - polyol, alcohol, acid, ester, polyethoxylated fatty alcohol
- a durability of the anti-icing functionality of the coating which may require improving the mechanical strength of the layer incorporating the antifreeze compound, in particular when it is likely to be subjected to occasional mechanical contact, or to a cleaning ...
- the antifreeze compound may be crosslinked and / or associated with at least one another compound so as to establish a physical interaction or a chemical interaction with it, and / or further dispersed in a solid matrix, organic or inorganic for example or mixed type ORMOCER (Organically Modified Ceramics), or solgel.
- ORMOCER Organic Metal Modified Ceramics
- physical interaction here is meant a hydrogen bond, a polar interaction of the Van der WaIs type or a hydrophobic interaction capable of achieving a mechanical reinforcement comparable to a crosslinking.
- This physical interaction is for example carried out by mixing polyvinylpyrrolidone as antifreeze compound and polyurethane as a matrix compound to said antifreeze compound.
- the chemical interaction is in turn created by the mixture of the antifreeze compound and at least one other compound so as to create a covalent bond between them, the mixture having undergone, in a known manner, a heat treatment, for example, or a UV crosslinking. , a crosslinking at room temperature, etc. It is thus possible to mix a polyol as antifreeze compound with another compound having isocyanate functions, to heat this mixture to obtain a polyurethane having the functionality of hydrophilicity by the compound antifreeze, and a mechanical strength by the chemical interaction between the hydroxyl functions of the polyol and the isocyanate functions.
- the overall thickness of the glazing the thicknesses of the glass substrates, the face or faces of the glazing including the low emissive coating, the thickness of the gas strips, the type of gas, the light transmission and the light reflection are indicated.
- the coefficient U of thermal transfer of the glazing obtained for the example with respect to the gas chosen and the gas filling rate (85% or 92%), as well as the coefficient U w of global heat transfer of the opening incorporating such glazings.
- the interlayer with low thermal conductivity 50 consists of two distinct elements for each of the two spaces of the glazing unit; it corresponds to the product SWISSPACER V ® from the company SAINT-GOBAIN
- the low-emissivity coatings 30 and 31 are deposited on glass substrates which correspond to the products PLANITHERM FUTURE ® N SAINT-GOBAIN GLASS, except for Example A1, which corresponds to Example A for which one of the substrates is replaced by
- PLANITHERM ® ULTRA from SAINT-GOBAIN GLASS whose specificities have been described above;
- the anti-icing coating 40 is deposited directly on the glass substrate; this is the coating EVERCLEAR ® sold by the company SAINT-GOBAIN GLASS;
- the anti-reflection coatings 32 are deposited on glass substrates and correspond to the Vision-Lite Plus ® products of SAINT-GOBAIN GLASS.
- the heat transfer coefficient U of the glazing was calculated at the center of the glazing and according to the standards prEN 673 and prEN 410; also, this calculation is independent of the type of interlayer.
- the overall heat transfer coefficient U w of the opening is calculated for the glazings incorporated, respectively, in an aluminum frame with a thermal break, conventional framing for enclosures chilled, and in a PVC frame.
- This calculation takes into account the dimensions of the opening, the glazing, and the frame, as well as the type of spacer and the type of frame.
- the opening is of format 1800 mm x 800 mm; the frame has a square section of 40 mm x 40 mm with a heat transfer coefficient U equal to 2.6 W / m 2 .K for aluminum and 1, 8 W / m 2 .K for PVC.
- the glazing is taken in rebate on a width of 25 mm.
- These windows thus have a thermal transfer coefficient U of less than 1.1 W / m 2 .K with a gas filling rate of at least 85%, and even less than 0.80 W / m 2 .K when argon is used at a thickness of 16 mm for one of the gas blades (Examples D and E), and preferably less than 0.65 W / m 2 .K with krypton for both blades. gas and at a filling rate of at least 92% (example B).
- the overall heat transfer coefficient U w of the opening in which such glazings are incorporated is thus less than or equal to 1.25 W / m 2 .K. with a gas filling rate of at least 92%.
- These glazings thus make it possible to obtain a light transmission of at least 67% and an external light reflection of less than 18%.
- the figures given take into account the presence of the anti-icing layer, which reduces the light transmission by only about 0.5%.
- the glazing loses slightly in optical quality while still retaining very acceptable values.
- an anti-reflection layer for example, in faces 1, 3 and 5 (example E) results in an overall transmission of 79.8% with a light reflection reduced to 7.2%, providing the glazing very comfortable optical qualities.
- Example C using only one krypton blade may be preferred in Example B for reasons of cost of glazing because krypton is an expensive gas.
- this example C also shows the case where a complete gas leak would occur for one of the two blades of Example B.
- FIG. 2 illustrates a second embodiment of the invention for which the opening 1 comprises an insulating double glazing 20 filled with xenon and / or krypton and / or argon, devoid of a heating element and comprising at least one low-emission coating 30 and an anti-icing coating 40.
- This double glazing has a U heat transfer coefficient of less than 1.2 W / m 2 .K, preferably less than 1.15 W / m 2 .K. and a light transmission of at least 75%.
- the double glazing 20 comprises two glass substrates 21 and 22, respectively intended to be in contact with the atmosphere of the refrigerated enclosure and the external environment. They are spaced apart by an interlayer 50 with a low thermal conductivity, such as that described in the first embodiment.
- the gas strip 23 between the two substrates has a thickness of between 4 and 16 mm, and preferably of at least 8 mm.
- a low-emissive coating 30 is disposed on at least one inner face of the glazing, facing 2 and / or facing 3.
- the coating is of the type described in the first embodiment, based on silver and silver. metal oxides.
- the anti-icing coating 40 is deposited on the outer face 21a of the inner substrate and corresponds to that described in the first embodiment.
- An anti-reflection coating 32 may be provided on at least one of the substrates, preferably on the face 1 and / or 3 of the glazing.
- Table II below illustrates three examples F, G and H of double glazing according to the invention.
- the coefficient U of thermal transfer was calculated at the center of the glazing and according to the standard prEN 673 and prEN 410; also, this calculation is independent of the type of interlayer.
- the low emitting coating corresponds to PLANITHERM ® FUTUR N of
- the anti-icing coating corresponds to SAINT-GOBAIN GLASS's EVERCLEAR ®
- the anti-reflective coating corresponds to SAINT-GOBAIN GLASS Vision-Lite Plus ® .
- These glazings suitable for openings requiring a small space because having a reduced total thickness, thus have a coefficient U of heat transfer less than 1, 15 W / m 2 .K at a gas rate of 85%, and less than 1 , 05 W / m 2 .K at a gas rate of at least 92%.
- the doors thus have a coefficient U w of global heat transfer less than
- the light transmission for Examples F and G is at least 78% and very advantageously passes to 81.5% when an anti-reflection coating is added, with a light reflection of 9.6% and 6.2%, respectively. .
- the glazings according to the first and second embodiments of the invention make it possible to respond to the ambient classes 2, 3, 4 and 5 given according to the EN441 standard, and listed in Table III below, and in particular to respond to Class 6 when the heat transfer coefficient U is below 0.8 as for Examples B, D and E. BOARD
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Joining Of Glass To Other Materials (AREA)
- Surface Treatment Of Glass (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Refrigerator Housings (AREA)
- Laminated Bodies (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Freezers Or Refrigerated Showcases (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2609444A CA2609444C (fr) | 2005-05-26 | 2005-09-15 | Vitrage isolant, notamment pour ouvrant d'enceinte refrigeree |
EP05800509.1A EP1890575B1 (fr) | 2005-05-26 | 2005-09-15 | Vitrage isolant, notamment pour ouvrant d'enceinte refrigeree |
DK05800509.1T DK1890575T3 (da) | 2005-05-26 | 2005-09-15 | Isolerende rudeindretning, navnlig til dør af nedkølet rum |
KR1020077026913A KR101293580B1 (ko) | 2005-05-26 | 2005-09-15 | 특히 냉장 챔버 문용 단열 창유리 |
JP2008512859A JP5329948B2 (ja) | 2005-05-26 | 2005-09-15 | 冷凍密閉容器の特に開口リーフ用断熱グレイジングユニット |
BRPI0520276-0A BRPI0520276B1 (pt) | 2005-05-26 | 2005-09-15 | vidraça isolante, folha de abertura, e, recinto refrigerado |
US11/914,980 US7870704B2 (en) | 2005-05-26 | 2005-09-15 | Insulating glazing unit for an opening leaf of a refrigerated enclosure |
CN200580049882.XA CN101222866B (zh) | 2005-05-26 | 2005-09-15 | 特别地用于加工致冷箱的隔热窗玻璃 |
ES05800509.1T ES2478628T3 (es) | 2005-05-26 | 2005-09-15 | Acristalamiento aislante, en particular para hoja de apertura de recinto refrigerado |
MX2007013634A MX2007013634A (es) | 2005-05-26 | 2005-09-15 | Vidriado aislante, en particular para puerta de camara de refrigeracion. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/137,373 | 2005-05-26 | ||
US11/137,373 US7976916B2 (en) | 1999-05-25 | 2005-05-26 | Refrigerated display case having a transparent insulating glazing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006125874A1 true WO2006125874A1 (fr) | 2006-11-30 |
Family
ID=35559410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/050744 WO2006125874A1 (fr) | 2005-05-26 | 2005-09-15 | Vitrage isolant, notamment pour ouvrant d'enceinte refrigeree |
Country Status (12)
Country | Link |
---|---|
US (2) | US7976916B2 (fr) |
EP (1) | EP1890575B1 (fr) |
JP (1) | JP5329948B2 (fr) |
KR (1) | KR101293580B1 (fr) |
CN (1) | CN101222866B (fr) |
BR (1) | BRPI0520276B1 (fr) |
CA (1) | CA2609444C (fr) |
DE (1) | DE202005022110U1 (fr) |
DK (1) | DK1890575T3 (fr) |
ES (1) | ES2478628T3 (fr) |
MX (1) | MX2007013634A (fr) |
WO (1) | WO2006125874A1 (fr) |
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- 2005-09-15 KR KR1020077026913A patent/KR101293580B1/ko active IP Right Grant
- 2005-09-15 ES ES05800509.1T patent/ES2478628T3/es active Active
- 2005-09-15 DE DE202005022110.4U patent/DE202005022110U1/de not_active Expired - Lifetime
- 2005-09-15 MX MX2007013634A patent/MX2007013634A/es active IP Right Grant
- 2005-09-15 CA CA2609444A patent/CA2609444C/fr active Active
- 2005-09-15 EP EP05800509.1A patent/EP1890575B1/fr active Active
- 2005-09-15 US US11/914,980 patent/US7870704B2/en active Active
- 2005-09-15 BR BRPI0520276-0A patent/BRPI0520276B1/pt active IP Right Grant
- 2005-09-15 DK DK05800509.1T patent/DK1890575T3/da active
- 2005-09-15 CN CN200580049882.XA patent/CN101222866B/zh active Active
- 2005-09-15 WO PCT/FR2005/050744 patent/WO2006125874A1/fr not_active Application Discontinuation
- 2005-09-15 JP JP2008512859A patent/JP5329948B2/ja active Active
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2910117A1 (fr) * | 2006-12-18 | 2008-06-20 | Saint Gobain | Procede de detection de dysfonctionnement d'une porte d'enceinte refrigeree |
WO2010010156A1 (fr) * | 2008-07-24 | 2010-01-28 | Agc Flat Glass Europe Sa | Vitrage isolant multiple |
JP2012505984A (ja) * | 2008-10-17 | 2012-03-08 | サン−ゴバン グラス フランス | 少なくとも1つの反射防止膜を組み込む多重窓ガラスユニット及び多重窓ガラスユニットにおける反射防止膜の使用 |
EP2194222A2 (fr) | 2008-12-02 | 2010-06-09 | Saint-Gobain Glass France | Ouvrant vitré pour enceinte climatique |
EP2675979B1 (fr) | 2011-02-17 | 2015-09-23 | Pilkington Group Limited | Vitrage à revêtement |
WO2016062970A1 (fr) | 2014-10-24 | 2016-04-28 | Saint-Gobain Glass France | Substrat transparent monolithique anti-condensation |
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Also Published As
Publication number | Publication date |
---|---|
BRPI0520276B1 (pt) | 2020-08-25 |
CA2609444A1 (fr) | 2006-11-30 |
CN101222866A (zh) | 2008-07-16 |
EP1890575A1 (fr) | 2008-02-27 |
US7870704B2 (en) | 2011-01-18 |
CN101222866B (zh) | 2014-07-30 |
JP2008545465A (ja) | 2008-12-18 |
US20080164788A1 (en) | 2008-07-10 |
KR101293580B1 (ko) | 2013-08-13 |
ES2478628T3 (es) | 2014-07-22 |
JP5329948B2 (ja) | 2013-10-30 |
BRPI0520276A2 (pt) | 2009-09-15 |
CA2609444C (fr) | 2012-11-13 |
EP1890575B1 (fr) | 2014-04-16 |
KR20080013916A (ko) | 2008-02-13 |
DE202005022110U1 (de) | 2014-03-14 |
US7976916B2 (en) | 2011-07-12 |
US20060005484A1 (en) | 2006-01-12 |
DK1890575T3 (da) | 2014-07-21 |
MX2007013634A (es) | 2008-04-07 |
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