EP3430225A1 - Insulating glazing unit, in particular for a climate chamber - Google Patents

Insulating glazing unit, in particular for a climate chamber

Info

Publication number
EP3430225A1
EP3430225A1 EP17709922.3A EP17709922A EP3430225A1 EP 3430225 A1 EP3430225 A1 EP 3430225A1 EP 17709922 A EP17709922 A EP 17709922A EP 3430225 A1 EP3430225 A1 EP 3430225A1
Authority
EP
European Patent Office
Prior art keywords
glazing
spacer
transparent
barrier
glass
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Withdrawn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
EP17709922.3A
Other languages
German (de)
French (fr)
Inventor
Erwan BAQUET
Romain Decourcelle
Edouard JONVILLE
Yoann Machizaud
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.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP3430225A1 publication Critical patent/EP3430225A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66333—Section members positioned at the edges of the glazing unit of unusual substances, e.g. wood or other fibrous materials, glass or other transparent materials
    • 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
    • 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
    • A47F3/005—Show cases or show cabinets with glass panels
    • 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
    • A47F3/043—Doors, covers
    • 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
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
    • 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
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66328—Section members positioned at the edges of the glazing unit of rubber, plastics or similar materials
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66342—Section members positioned at the edges of the glazing unit characterised by their sealed connection to the panes
    • E06B3/66352—Section members positioned at the edges of the glazing unit characterised by their sealed connection to the panes with separate sealing strips between the panes and the spacer
    • 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
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66333—Section members positioned at the edges of the glazing unit of unusual substances, e.g. wood or other fibrous materials, glass or other transparent materials
    • E06B2003/66338—Section members positioned at the edges of the glazing unit of unusual substances, e.g. wood or other fibrous materials, glass or other transparent materials of glass
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B2003/6638—Section members positioned at the edges of the glazing unit with coatings
    • 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
    • E06B3/663—Elements for spacing panes
    • 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
    • E06B3/663—Elements for spacing panes
    • E06B3/66309—Section members positioned at the edges of the glazing unit
    • E06B3/66342—Section members positioned at the edges of the glazing unit characterised by their sealed connection to the panes
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing

Definitions

  • the invention relates to an insulating glazing unit for an opening, in particular an enclosure / climatic unit, in particular a refrigerated one, comprising at least two sheets of glass spaced by at least one air or gas gap with the aid of at least one a spacer arranged at the periphery of the glass sheets, at least one transparent spacer being disposed on one of a sides of the glazing.
  • the invention will be more particularly described with regard to a refrigerated furniture / showcase application, without being limited thereto.
  • the glazing of the invention can be used in all building applications, exterior glazing, interior glazing, partition, etc.
  • a climatic chamber is more particularly intended to constitute a positive cold piece of furniture or a negative cold piece of furniture in which are exposed refrigerated or respectively frozen products, such as food products or beverages, or any other products requiring preservation in the cold, for example pharmaceuticals or flowers.
  • a double or triple glazing is framed on its entire periphery by means of a frame made of profiles, usually anodized aluminum for reasons of aesthetics, resistance to aging and ease of manufacture.
  • the frame is usually stuck directly on the periphery and on the outer faces of the glazing; he participates in the rigidity of the structure and makes it possible to hide in view the intermediate means (spacers) arranged at the periphery of the glazing and separating the glass sheets.
  • spacers intermediate means
  • the spacers are fixed with adhesives such as acrylic adhesives, which also perform a water-tight function, the adhesive being in interface between the spacer and the inner face of the glasses of the glazing.
  • adhesives such as acrylic adhesives, which also perform a water-tight function, the adhesive being in interface between the spacer and the inner face of the glasses of the glazing.
  • a transparent additional seal such as silicone seal disposed on the outer side of the air gap of the glazing, on the edge of the spacer and between the two sheets of glass.
  • a second sealing barrier in particular silicone, completes the watertightness by sealing not only water but also gas and water vapor tightness.
  • the object of the invention is therefore to provide an insulating glazing, in particular for a climatic chamber, which obviates the various disadvantages mentioned above, while ensuring watertightness but also by optimizing gas and water vapor tightness. while providing a field of vision as airy as possible through the glazing, the person facing a refrigerated enclosure with a plurality of vertical glazing laterally joined to each other to have the impression of a continuous glass surface without honest perception of vertical discontinuities.
  • the insulating glazing unit intended for an opening of a chamber / climatic unit, in particular refrigerated comprises at least two substantially parallel sheets of glass, spaced apart by at least one air or gas space, at least one spacer arranged at the periphery of the glass sheets and now spaced the two glass sheets, at least one spacer being transparent and disposed on one of a sides of the glazing, and a first watertight barrier, formed by at least one structural seal ⁇ having the structural fastening function of the spacer to the glass sheets) and whose material is waterproof, and a second barrier to seal gas and water vapor, the two sealing barriers associated with the transparent spacer being made of transparent material, and is characterized in that the second gas and water vapor barrier and of transparent material is arranged in interface between its glass sheets and the spacer on the inner side of the glazing, the structural joint also in interface being positioned abutted and aligned with the second barrier.
  • transparent spacer in the expression "transparent spacer” and “transparent material” means transparent means of sealing, which allows at least to see colors, shapes through, without necessarily being able to read a text behind the transparent spacer.
  • the second sealing barrier is positioned against the fixing faces of the spacer to the glass sheets.
  • the second sealing barrier stops at the edge of the spacer opposite the gas blade ⁇ it does not protrude inwardly of the gas strip relative to the spacer) ; it is also limited to a reduced thickness of the spacer.
  • the term "thickness” means the dimension parallel to the plane of the glass sheet and perpendicular to the longitudinal dimension of the spacer which extends over an entire side of the glazing. It is therefore the dimension parallel to the glass sheets and in a horizontal plane in the mounted position of the glazing.
  • the second sealing barrier and the structural seal extend over the thickness of the spacer for each face of the spacer vis-a-vis each glass sheet.
  • the second sealing barrier has a thickness equivalent to the thickness of the structural seal, in particular from a few micrometers to 2 mm.
  • the second sealing barrier thus positioned and with such reduced dimensions, strongly minimizes the visual impact.
  • the transparent gas and water vapor barrier material is preferably butyl or polyisobutene (PIB).
  • PIB polyisobutene
  • the first sealing barrier which opens on the side opposite to the gas strip (that is to say on the outside of the glazing) extends in interface between the glass sheets and the spacer being limited to the only faces of the spacer which are in contact with the glass sheets and strictly parallel to said glass sheets.
  • the structural seal is in a transparent adhesive and waterproof material, such as acrylic or silicone, crosslinkable or not under the action of ultraviolet.
  • the structural seal does not necessarily need to extend over the entire thickness of the spacer, thus leaving room for the positioning of the gas and water vapor barrier.
  • the thin interface thickness of the watertight structural joint abutting the gas and water vapor barrier provides an extremely compact double transparent barrier that becomes imperceptible when a person faces the refrigerated cabinet or is positioned angularly.
  • This double barrier extends strictly parallel to the glass sheets. It does not extend in any direction transverse to the glass sheets.
  • This double barrier has a linear form.
  • Each of the first and second parallelepiped-shaped sealing barriers preferably with a rectangular section to be as thin as possible.
  • the transparent spacer is made of glass.
  • the spacer when the spacer is made of glass, the spacer constitutes a bar of cut glass to present a rectangular section. In a rectangular section, the spacer has continuous straight faces perpendicular to each other. Thus, the spacer does not have chamfered faces, greatly simplifying the cutting process.
  • the transparent spacer is made of plastic, being solid or hollow, especially SAN (styrene-acrylonitrile) or PETg (polyethylene terephthalate glycolized) or PMA (polymethylmetacrylate), or polycarbonate, or polymethylpentene (TPX).
  • SAN styrene-acrylonitrile
  • PETg polyethylene terephthalate glycolized
  • PMA polymethylmetacrylate
  • TPX polymethylpentene
  • the transparent plastic spacer comprises on at least one of its inner and outer faces, the inner and outer faces being the opposite and opposite faces respectively opposite and to the opposite of the air gap, a transparent coating of gas and water vapor sealing.
  • the thin transparent gas and water vapor-proof coating has a thickness preferably of between 2 nm and 200 ⁇ m.
  • the thin coating is a film attached to the spacer or a deposited thin film. Its thickness is mainly related to the type of material used and its manufacturing process.
  • a thin layer deposited it is deposited by any technique, such as magnetron, evaporation, or liquid.
  • the thin transparent coating impervious to gas and water vapor is, as a preferred example, made of silicon oxide, aluminum oxide or polysilazane.
  • the thin coating may further cover the corners of the inner and / or outer faces and overflow onto adjacent faces that are parallel to the glass sheets (attachment faces of the spacer with the glass sheets).
  • the thin coating preferably covers the inner face of the spacer, which is facing the air gap, that is to say inside insulating glazing.
  • the thin coating can cover all the faces of the spacer.
  • the spacer and its coating preferably form a unitary assembly obtained during the manufacture of the spacer, that is to say that when the spacer is mounted in the glazing, it already includes its coating.
  • the coating is integral with the spacer.
  • this coating is positioned on the edge of the spacer, parallel to the edge of the glazing, its visual impact is zero by its thinness and transparency.
  • the plastic spacer combined with this thin coating ensures the function of sealing gas and water vapor without the need for thick cords of silicone as in the prior art on the edge / outer face of the spacer .
  • the positioning of the double interfacial sealing barrier according to the invention between the spacer and the glass sheets makes it possible to position the edge / outer face of the spacer copially with the edge of the glass sheets.
  • the spacer is in fact less retracted towards the interior of the glazing, providing a maximized transparency effect for the entire glazing unit.
  • the glazing is a double glazing or triple glazing.
  • the glazing may advantageously be provided on its glass sheets with one or more low-emissive coating (s) and / or with an anti-fog or anti-icing layer, thereby avoiding usual heating means, which contributes to saving energy.
  • s low-emissive coating
  • anti-fog or anti-icing layer an anti-fog or anti-icing layer
  • the invention relates firstly to an opening comprising a glazing unit according to the invention, and secondly to a climatic cabinet, of the refrigerated cabinet type, comprising at least one opening or a glazing unit of the invention, or a plurality of contiguous glazing joined to each other, the transparent spacers being arranged at least on the sides joined together glazing.
  • FIG. i illustrates a schematic perspective view of a facade of a refrigerated cabinet incorporating a plurality of glazing according to the invention
  • FIG. 2 is a partial diagrammatic view in section and from above of a glazing unit of the invention
  • FIG. 3 is a schematic sectional view of a glazing of the invention with a spacer variant, the spacer being hollow;
  • FIGS. 4a to 4d are schematic views of the positioning variants of the thin sealing liner of a spacer for a glazing unit of the invention, the spacer may be solid or hollow.
  • the climate cabinet 1 schematically illustrated in Figure 1 comprises a plurality of openings 2 each comprising an insulating glazing unit 3 according to the invention.
  • the piece of furniture is for example a cold refrigerated furniture positive intended to be installed along a store aisle.
  • the opening of the invention comprising the insulating glass of the invention does not need to understand vertical uprights frame and provided with thick joints at the junction of two openings / glazing abutments.
  • the glazing of the invention thus allows the transparency of its vertical edges to provide a continuous transparent surface when the windows are joined by their edge.
  • Each insulating glazing unit comprises at least two glass sheets held parallel spaced apart by a frame whose vertically opposed parts in the mounted position of the glazing are transparent.
  • the facade of the glazing and thus the furniture is thus purified of any structural frame and has a virtually smooth glass wall appearance. We gain in this way in vision space.
  • Figure 2 illustrates a top view and partial of the insulating glass 3 showing the transparent vertical interior portion 4 of the frame.
  • the insulating glazing shown is double glazed with two sheets of glass. In the case of triple glazing with three sheets of glass, the glazing would comprise two transparent portions 4 of the invention.
  • the glazing 3 comprises two sheets of glass 30 and 31 parallel and spaced apart by means of an intermediate element or spacer 5.
  • the glass sheets 30 and 31 are preferably tempered glass.
  • the thickness of each of the glass sheets is between 2 and 5 mm, and is preferably 3 or 4 mm in order to minimize the overall weight of the glazing and to optimize the light transmission.
  • the glass sheets are separated from each other by the spacer 5 to form between them a volume forming a gas blade 32.
  • the gas strip 32 has a thickness of at least 4 mm and is adapted according to the desired performance of the thermal transfer coefficient U, without however being greater than 16 mm, or even 20 mm.
  • the gas strip is made of air or preferably, to reinforce the insulation level of the glazing, a rare gas, chosen from argon, krypton, xenon, or a mixture of these different gases. , according to a filling rate of at least 85%. For a still improved U coefficient, it will be preferred a filling with at least 92% krypton or xenon.
  • the spacer 5 is preferably of low thermal conductivity, having a coefficient of thermal conductivity of at most 1 W / m.K, preferably less than 0.7 W / m.K, and even less than 0.4 W / m.K.
  • the spacer is entirely made of glass.
  • the spacer has a transparent plastic body, such as styrene acrylonitrile (SAN) or polypropylene.
  • SAN styrene acrylonitrile
  • polypropylene such as polypropylene
  • the spacer 5 is of generally parallelepipedal shape and comprises four faces, a so-called internal face 50 facing the gas strip, an opposite outer face 51 facing the outside of the glazing and two faces called attachment face 52 and 53 facing the respective glass sheets 30 and 31.
  • the spacer may have in particular at its inner face 50 a cut-off profile to the corners.
  • the spacer 5 extends in length, here not shown, along the entire length of each of the at least vertical sides of the glazing.
  • the spacer has a width, transverse dimension to the general faces of the glass sheets, equivalent to the desired spacing of the glass sheets.
  • the spacer has a thickness, a distance separating the internal 50 and outer 51 faces (between the edge of the glazing and the gas or air blade), which is equivalent to the width if the spacer has a square section, or which can be especially smaller.
  • the spacer has a thickness of between 4 and 20 mm (and preferably between 9 and 15 mm).
  • the spacer 5 is fixed by bonding via its attachment faces 52 and 53 against the respective inner faces 30A and 31A of the glass sheets 30 and 31, by means of a structural seal 6 which also ensures a watertight seal.
  • the material of the structural seal 6 is transparent and waterproof, for example silicone or acrylic.
  • the structural seal 6 is for example a double-sided adhesive tape.
  • the thickness of the structural seal 6 is between a few micrometers and 2 mm depending on the nature of the material as to its ability to bond in particular.
  • the structural seal 6 extends along the length of the spacer on one side of the glazing, and according to a limited width of each attachment face 52 and 53 of the spacer.
  • the structural seal 6 is positioned so as to open on the outside of the glazing.
  • the spacer 5 by its outer face 51 and each structural seal 6 in interface with each sheet of glass are coplanar with the edge of the glass sheets.
  • the glazing further comprises a transparent barrier and sealing gas and water vapor.
  • the gas and water vapor barrier consists of sealing means 7 arranged in interface with each glass sheet 30 and 31 and the fixing faces 52 and 53 of the spacer. .
  • the sealing means 7 extend on the one hand over the length of the spacer, and on the other hand according to the thickness of the spacer being abutted at each structural joint 6. According to the sectional view of the 2, the sealing means 7 are aligned with the structural seal 6, parallel to each attachment face 52 and 53 of the spacer.
  • the sealing means open on the inner side of the glazing facing the gas strip, preferably without exceeding the inner face 50 of the spacer.
  • the sealing means 7 are preferably butyl.
  • the sealing means 7 have a thickness equivalent to that of the structural seal 6.
  • the spacer is made of glass
  • the configuration of FIG. 2 is perfectly suitable for guaranteeing water and gas and vapor tightness. 'water. It is not necessary to add silicone on the outer face of the spacer and between the glass sheets, as in the prior art. Therefore, the transparent portion 4 of the frame thus created provides a seal while minimizing very strongly the visual impact, no thickness of sealing material being indeed present transversely to the glass sheets at the edge of the glazing.
  • spacer 5 when spacer 5 is made of transparent plastic material, it preferably comprises, according to the invention, a thin coating 54 made of a material that is impervious to gases and to water vapor integral with inner face 50 and or external 51 of said spacer.
  • the transparent plastic spacer may be solid or hollow as schematically illustrated in FIG.
  • the coating 54 may cover one of the inner or outer faces and the corners of the spacer may protrude over the attachment faces 52 and 53,
  • FIG. 4b illustrates the variant for which the coating 54 is on both the inner face 50 and outer face 51.
  • Figure 4c corresponds to Figure 4b, the coating 54 projecting over the attachment face.
  • Figure 4d illustrates a variant for which the coating covers all the faces of the spacer.
  • This coating is thin, preferably with a thickness of between 2 nm and 200 ⁇ .
  • the thin coating is a film attached to the spacer or a deposited thin film. Its thickness is mainly related to the type of material used and its manufacturing process.
  • a thin layer deposited it is deposited by any technique, such as magnetron, evaporation, or liquid.
  • the thin transparent coating impervious to gas and water vapor is, as a preferred example, made of silicon oxide, aluminum oxide or polysilazane.
  • the coating 54 although integral with the edge of the spacer, is imperceptible to the naked eye, which does not disturb the transparent visual impression that must be made of the all of the glazing, in particular at the joint of two glazing joined by their vertical sides comprising the transparent spacers.
  • the function of sealing against gases and water vapor is guaranteed on the entire edge of the glazing without visual disturbance on the one hand, the second barrier 7 positioned and limited between the spacer and the glass sheets, and on the other hand, either to the glass spacer or to the transparent plastic spacer having a transparent thin coating integral with the edge of the spacer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

Insulating glazing unit (3) comprising at least two glass sheets (30, 31) that are separated by at least one air or gas space (32), at least one spacer that is located at the periphery of the glass sheets and keeps the two glass sheets at a distance from each other, at least one spacer (5) being transparent and being located on one of the sides of the glazing unit, a first, water-tight barrier which is formed by at least one structural joint (6) and is made of a waterproof material, and a second, gas-tight and steam-tight barrier (7), the two barriers associated with the transparent spacer being made of transparent material, characterized in that the second, gas-tight and steam-tight barrier (7) that is made of transparent material is disposed between the glass sheets (30, 31) and the spacer (5) on the inside of the glazing unit, and the structural joint (6), which is also disposed therebetween, abuts, and is aligned with, the second barrier.

Description

VITRAGE ISOLANT NOTAMMENT POUR ENCEINTE CLIMATIQUE  INSULATING GLAZING, IN PARTICULAR FOR A CLIMATIC ENCLOSURE
L'invention concerne un vitrage isolant destiné à un ouvrant notamment d'enceinte/meuble climatique, en particulier réfrigéré, comportant au moins deux feuilles de verre espacées par au moins une lame d'air ou de gaz à l'aide d'au moins un espaceur agencé à la périphérie des feuilles de verre, au moins un espaceur transparent étant disposé sur l'un d'un côtés du vitrage. The invention relates to an insulating glazing unit for an opening, in particular an enclosure / climatic unit, in particular a refrigerated one, comprising at least two sheets of glass spaced by at least one air or gas gap with the aid of at least one a spacer arranged at the periphery of the glass sheets, at least one transparent spacer being disposed on one of a sides of the glazing.
L'invention sera plus particulièrement décrite en regard d'une application de meuble/vitrine réfrigéré, sans toutefois y être limitée. Le vitrage de l'invention peut être utilisé dans toutes applications de bâtiment, vitrage extérieur, vitrage d'intérieur, cloison, etc. The invention will be more particularly described with regard to a refrigerated furniture / showcase application, without being limited thereto. The glazing of the invention can be used in all building applications, exterior glazing, interior glazing, partition, etc.
Une enceinte climatique est plus particulièrement destinée à constituer un meuble à froid positif ou un meuble à froid négatif dans lequel sont exposés des produits réfrigérés ou respectivement surgelés, tels que des produits alimentaires ou boissons, ou tous autres produits nécessitant une conservation dans le froid, par exemple des produits pharmaceutiques ou des fleurs. A climatic chamber is more particularly intended to constitute a positive cold piece of furniture or a negative cold piece of furniture in which are exposed refrigerated or respectively frozen products, such as food products or beverages, or any other products requiring preservation in the cold, for example pharmaceuticals or flowers.
Si la commercialisation des produits congelés se fait de plus à plus à l'aide de meubles pourvus de portes, dites « froides », à vitrages isolants transparents, la commercialisation des produits alimentaires frais et ultrafrais en libre service se fait aujourd'hui essentiellement au moyen de meubles verticaux ouverts dans les magasins. Dotés d'un rideau d'air réfrigéré en face avant pour isoler les denrées alimentaires de l'ambiance chaude du magasin et les maintenir à la température de conservation optimale, ces meubles sont plutôt performants de ce point de vue et offrent un accès direct aux produits en l'absence de barrière physique, facilitant l'acte d'achat.  If the marketing of frozen products is more and more using furniture equipped with doors, called "cold", with transparent insulating glass, the marketing of fresh and ultra-fresh food products in self-service is today mainly medium of vertical furniture open in the shops. Equipped with a refrigerated air curtain on the front to isolate the foodstuffs from the warm atmosphere of the store and keep them at the optimum storage temperature, these furniture are rather efficient from this point of view and offer direct access to produced in the absence of a physical barrier, facilitating the act of purchase.
Cependant l'absence de barrière physique sur ces meubles verticaux à froid positif entraîne un échange thermique important entre l'ambiance du magasin et l'ambiance beaucoup plus froide générée à l'intérieur de ces meubles, ce qui engendre les conséquences suivantes:  However, the absence of a physical barrier on these positive cold vertical furniture causes a significant heat exchange between the atmosphere of the store and the much colder atmosphere generated inside the furniture, which has the following consequences:
- cet échange thermique doit être compensé par une production de froid plus importante afin de garantir les températures optimales pour la conservation des aliments dans le meuble, ce qui accroît de manière néfaste la consommation énergétique de ces meubles; l'ambiance du magasin est considérablement refroidie localement (phénomène d'allée froide), ce qui conduit les consommateurs à limiter leur passage dans ces rayons pour les achats essentiels en délaissant les achats d'impulsion. Ce refroidissement local des allées concernées est d'autant plus accentué depuis ces dernières années que le renforcement des règles sanitaires a conduit à baisser encore la température de conservation des aliments; - this heat exchange must be offset by increased cold production to ensure optimum temperatures for food storage in the furniture, which adversely increases the energy consumption of these furniture; the atmosphere of the store is considerably cooled locally (cold aisle phenomenon), which leads consumers to limit their passage in these departments for essential purchases while neglecting impulse purchases. This local cooling of the alleys concerned is all the more accentuated in recent years as the reinforcement of the sanitary rules has led to further lowering the temperature of food preservation;
- l'air humide de l'ambiance du magasin est drainé par le rideau d'air froid en face avant du meuble, ce qui conduit à une saturation rapide de l'échangeur de froid du meuble (appelé aussi évaporateur) qui se retrouve pris en glace, diminuant alors significativement l'efficacité de l'échange thermique. Il est donc nécessaire de procéder à des séquences de dégivrages fréquentes de l' évaporateur, typiquement deux fois par jour, ce qui entraîne une consommation énergétique accrue et engendre des frais.  - The humid atmosphere of the store atmosphere is drained by the cold air curtain in the front of the cabinet, which leads to a rapid saturation of the furniture cold exchanger (also called evaporator) which is found caught in ice, thus significantly reducing the efficiency of the heat exchange. It is therefore necessary to carry out frequent defrosting sequences of the evaporator, typically twice a day, which leads to increased energy consumption and generates costs.
Face à ces inconvénients, les constructeurs de meubles ont tenté d'apporter des réponses, en optimisant notamment les rideaux d'air et en réchauffant les allées par des cassettes rayonnantes ou soufflantes à air chaud. Ce progrès reste néanmoins limité quant au confort des clients, et cela au détriment de la consommation énergétique. En effet, l'énergie calorifique produite par ces systèmes de chauffage qui sont gourmands en énergie se retrouve en partie dans les meubles, ce qui conduit au final à une consommation énergétique encore plus importante pour réfrigérer ces meubles.  Faced with these disadvantages, furniture manufacturers have tried to provide answers, particularly by optimizing the air curtains and warming the aisles by radiating cassettes or blowers with hot air. However, this progress remains limited as regards the comfort of the customers, and this to the detriment of the energy consumption. Indeed, the heat energy produced by these energy-hungry heating systems is found partly in the furniture, which ultimately leads to an even greater energy consumption to refrigerate these pieces of furniture.
La mise en place de portes froides conventionnelles sur ces meubles ouverts permet de répondre efficacement à ces inconvénients. Ces solutions largement éprouvées en froid négatif pour des produits congelés, peinent cependant à se développer pour le froid positif. (1 est reproché à ces portes de mettre une barrière physique entre le consommateur et le produit en libre service, pouvant générer des conséquences négatives potentielles sur les ventes. The implementation of conventional cold doors on these open furniture can effectively address these disadvantages. These solutions largely tested in negative cold for frozen products, however, struggle to develop for the positive cold. (1 is criticized for these doors to put a physical barrier between the consumer and the self-service product, which can generate potential negative consequences on sales.
En outre, ces ouvrants sont réalisés suivant une conception proche des fenêtres pour le bâtiment : un double ou triple vitrage est encadré sur l'ensemble de sa périphérie au moyen d'un cadre fait de profilés, généralement en aluminium anodisé pour des raisons d'esthétique, de résistance au vieillissement et de facilité de fabrication. Le cadre est généralement collé directement sur la périphérie et sur les faces externes du vitrage ; il participe à la rigidité de la structure et permet de masquer à la vue les moyens intercalaires (espaceurs) disposés à la périphérie du vitrage et séparant les feuilles de verre. Cependant un tel cadre structurel réduit de façon significative le clair de vue au travers du vitrage. In addition, these openings are made in a design close to the windows for the building: a double or triple glazing is framed on its entire periphery by means of a frame made of profiles, usually anodized aluminum for reasons of aesthetics, resistance to aging and ease of manufacture. The frame is usually stuck directly on the periphery and on the outer faces of the glazing; he participates in the rigidity of the structure and makes it possible to hide in view the intermediate means (spacers) arranged at the periphery of the glazing and separating the glass sheets. However, such a structural frame significantly reduces the clarity of view through the glazing.
11 a alors été proposé pour améliorer le clair de vue au travers des vitrages, de fabriquer des vitrages isolants avec des espaceurs transparents au moins au niveau de leurs côtés verticaux, engendrant en outre une perception visuelle de continuité transparente de surface sur l'ensemble des vitrines réfrigérées accolées les unes aux autres. It was then proposed to improve the clarity of vision through glazing, to manufacture insulating glazings with transparent spacers at least at their vertical sides, generating further a visual perception of transparent surface continuity on all refrigerated display cases joined to each other.
Les espaceurs sont fixés avec des adhésifs tels que des adhésifs en acrylique, qui réalisent en outre une fonction d'étanchéité à l'eau, l'adhésif étant en interface entre l'espaceur et la face interne des verres du vitrage. Pour parfaire le scellement, il est parfois ajouté un joint supplémentaire transparent tel que du joint silicone disposé du côté externe de la lame d'air du vitrage, sur le chant de l'espaceur et entre les deux feuilles de verre. The spacers are fixed with adhesives such as acrylic adhesives, which also perform a water-tight function, the adhesive being in interface between the spacer and the inner face of the glasses of the glazing. To perfect the seal, it is sometimes added a transparent additional seal such as silicone seal disposed on the outer side of the air gap of the glazing, on the edge of the spacer and between the two sheets of glass.
L'ajout d'une deuxième barrière d'étanchéité en particulier en silicone complète l'étanchéité en assurant une étanchéité non seulement à l'eau mais aussi une étanchéité aux gaz et à la vapeur d'eau. The addition of a second sealing barrier, in particular silicone, completes the watertightness by sealing not only water but also gas and water vapor tightness.
Cependant ce joint additionnel sur le chant du vitrage, bien que transparent, engendre un impact visuel négatif pour le consommateur face à un enceinte réfrigérée avec un tel vitrage. L'invention a donc pour but de réaliser un vitrage isolant notamment pour enceinte climatique qui obvie aux différents inconvénients énoncés précédemment, en assurant l'étanchéité à l'eau mais également en optimisant l'étanchéité aux gaz et à la vapeur d'eau, tout en procurant un champ de vision le plus aéré possible au travers du vitrage, la personne face à une enceinte réfrigérée dotée d'une pluralité de vitrages verticaux accolés latéralement les uns aux autres devant avoir l'impression d'une surface en verre continue sans perception franche de discontinuités verticales.  However this additional seal on the edge of the glazing, although transparent, generates a negative visual impact for the consumer facing a refrigerated enclosure with such a glazing. The object of the invention is therefore to provide an insulating glazing, in particular for a climatic chamber, which obviates the various disadvantages mentioned above, while ensuring watertightness but also by optimizing gas and water vapor tightness. while providing a field of vision as airy as possible through the glazing, the person facing a refrigerated enclosure with a plurality of vertical glazing laterally joined to each other to have the impression of a continuous glass surface without honest perception of vertical discontinuities.
Selon l'invention, le vitrage isolant destiné à un ouvrant d'enceinte/meuble climatique, en particulier réfrigéré, comporte au moins deux feuilles de verre sensiblement parallèles, espacées par au moins une lame d'air ou de gaz, au moins un espaceur agencé à la périphérie des feuilles de verre et maintenant espacés les deux feuilles de verre, au moins un espaceur étant transparent et disposé sur l'un d'un côtés du vitrage, ainsi qu'une première barrière d'étanchéité à l'eau, formée par au moins un joint structural {possédant la fonction de fixation structurale de l'espaceur aux feuilles de verre) et dont le matériau est étanche à l'eau, et une seconde barrière d'étanchéité aux gaz et à la vapeur d'eau, les deux barrières d'étanchéité associées à l'espaceur transparent étant en matériau transparent, et est caractérisé en ce que la seconde barrière d'étanchéité aux gaz et à ia vapeur d'eau et en matériau transparent est agencée en interface entre Ses feuilles de verre et l'espaceur du côté intérieur du vitrage, le joint structural également en interface étant positionné abouté et aligné avec la seconde barrière. According to the invention, the insulating glazing unit intended for an opening of a chamber / climatic unit, in particular refrigerated, comprises at least two substantially parallel sheets of glass, spaced apart by at least one air or gas space, at least one spacer arranged at the periphery of the glass sheets and now spaced the two glass sheets, at least one spacer being transparent and disposed on one of a sides of the glazing, and a first watertight barrier, formed by at least one structural seal {having the structural fastening function of the spacer to the glass sheets) and whose material is waterproof, and a second barrier to seal gas and water vapor, the two sealing barriers associated with the transparent spacer being made of transparent material, and is characterized in that the second gas and water vapor barrier and of transparent material is arranged in interface between its glass sheets and the spacer on the inner side of the glazing, the structural joint also in interface being positioned abutted and aligned with the second barrier.
Ainsi, une étanchéité aux gaz et à la vapeur d'eau est garantie avec des moyens transparents d'étanchéité qui sont positionnés non pas sur la tranche du vitrage mais parallèlement aux feuilles de verre, minimisant grandement l'impact visuel.  Thus, a seal to gases and water vapor is guaranteed with transparent sealing means which are positioned not on the edge of the glazing but parallel to the glass sheets, greatly minimizing the visual impact.
On entend par « transparent » dans l'expression « espaceur transparent » et « matériau transparent » relatif aux moyens transparents d'étanchéité, qui permet au moins de voir des couleurs, des formes à travers, sans nécessairement pouvoir lire un texte derrière l'espaceur transparent.  The term "transparent" in the expression "transparent spacer" and "transparent material" means transparent means of sealing, which allows at least to see colors, shapes through, without necessarily being able to read a text behind the transparent spacer.
La seconde barrière d'étanchéité est positionnée contre les faces de fixation de l'espaceur aux feuilles de verre. The second sealing barrier is positioned against the fixing faces of the spacer to the glass sheets.
Selon une caractéristique, la seconde barrière d'étanchéité s'arrête au niveau du chant de l'espaceur en regard de la lame de gaz {elle ne fait pas saillie vers l'intérieur de la lame de gaz par rapport à l'espaceur) ; elle est par ailleurs limitée à une épaisseur réduite de l'espaceur. On entend par « épaisseur », la dimension parallèle au plan de la feuille de verre et perpendiculaire à la dimension longitudinale de l'espaceur qui s'étend sur tout un côté du vitrage. 11 s'agît donc de la dimension parallèle aux feuilles de verre et dans un plan horizontal en position montée du vitrage.  According to one characteristic, the second sealing barrier stops at the edge of the spacer opposite the gas blade {it does not protrude inwardly of the gas strip relative to the spacer) ; it is also limited to a reduced thickness of the spacer. The term "thickness" means the dimension parallel to the plane of the glass sheet and perpendicular to the longitudinal dimension of the spacer which extends over an entire side of the glazing. It is therefore the dimension parallel to the glass sheets and in a horizontal plane in the mounted position of the glazing.
La seconde barrière d'étanchéité et le joint structural s'étendent sur l'épaisseur de l'espaceur pour chaque face de l'espaceur en vis-à-vis de chaque feuille de verre.  The second sealing barrier and the structural seal extend over the thickness of the spacer for each face of the spacer vis-a-vis each glass sheet.
Selon une autre caractéristique, la seconde barrière d'étanchéité présente une épaisseur équivalente à l'épaisseur du joint structural, en particulier de quelques micromètres à 2 mm. According to another characteristic, the second sealing barrier has a thickness equivalent to the thickness of the structural seal, in particular from a few micrometers to 2 mm.
Par conséquent, la seconde barrière d'étanchéité ainsi positionnée et avec de telles dimensions réduites, minimise fortement l'impact visuel. Therefore, the second sealing barrier thus positioned and with such reduced dimensions, strongly minimizes the visual impact.
Le matériau transparent d'étanchéité aux gaz et à la vapeur d'eau est de préférence du butyle ou polyisobutene (PIB). L'étanchéité à l'eau est réalisée par la barrière faîte du joint structural qui réalise la fixation de l'espaceur aux feuilles de verre. Ce joint structural est disposé en interface entre chaque feuille de verre et la face en regard de l'espaceur. Si la barrière d'étanchéité aux gaz et à la vapeur d'eau est disposée selon l'invention du côté intérieur du vitrage, le joint structural abouté à ladite barrière débouche du côté extérieur du vitrage. The transparent gas and water vapor barrier material is preferably butyl or polyisobutene (PIB). The watertightness is achieved by the barrier made of the structural joint which realizes the fixing of the spacer to the glass sheets. This structural joint is disposed at the interface between each glass sheet and the opposite face of the spacer. If the gas and water vapor barrier is disposed according to the invention on the inner side of the glazing, the structural joint abutting said barrier opens on the outside of the glazing.
La première barrière d'étanchéité qui débouche du côté opposé à la lame de gaz (c'est-à- dire du côté extérieur du vitrage) s'étend en interface entre les feuilles de verre et l'espaceur en étant limitée aux seules faces de l'espaceur qui sont en contact avec les feuilles de verre et strictement parallèles auxdites feuilles de verre.  The first sealing barrier which opens on the side opposite to the gas strip (that is to say on the outside of the glazing) extends in interface between the glass sheets and the spacer being limited to the only faces of the spacer which are in contact with the glass sheets and strictly parallel to said glass sheets.
Le joint structural est dans un matériau transparent adhésif et étanche à l'eau, tel qu'en acrylique ou silicone, réticulable ou non sous l'action des ultraviolets. The structural seal is in a transparent adhesive and waterproof material, such as acrylic or silicone, crosslinkable or not under the action of ultraviolet.
Avantageusement, le joint structural n'a pas forcément besoin de s'étendre sur toute l'épaisseur de l'espaceur, laissant ainsi la place au positionnement de la barrière d'étanchéité aux gaz et à la vapeur d'eau.  Advantageously, the structural seal does not necessarily need to extend over the entire thickness of the spacer, thus leaving room for the positioning of the gas and water vapor barrier.
Ainsi, l'épaisseur mince d'interface du joint structural étanche à l'eau abouté à la barrière d'étanchéité aux gaz et à la vapeur d'eau procure une double barrière transparente extrêmement compacte qui devient imperceptible lorsqu'une personne fait face au meuble réfrigérée ou est positionnée angulairement. Thus, the thin interface thickness of the watertight structural joint abutting the gas and water vapor barrier provides an extremely compact double transparent barrier that becomes imperceptible when a person faces the refrigerated cabinet or is positioned angularly.
Cette double barrière s'étend strictement parallèlement aux feuilles de verre. Elle ne s'étend aucunement dans une direction transversale aux feuilles de verre.  This double barrier extends strictly parallel to the glass sheets. It does not extend in any direction transverse to the glass sheets.
Cette double barrière présente une forme linéaire. This double barrier has a linear form.
Chacune des première et seconde barrières d'étanchéité de forme parallélépipédique, de préférence avec une section rectangulaire pour être la plus mince possible.  Each of the first and second parallelepiped-shaped sealing barriers, preferably with a rectangular section to be as thin as possible.
Selon une autre caractéristique, l'espaceur transparent est en verre. According to another characteristic, the transparent spacer is made of glass.
En particulier, lorsque l'espaceur est en verre, l'espaceur constitue un barreau de verre découpé pour présenter une section rectangulaire. Selon une section rectangulaire, l'espaceur possède des faces droites continues et perpendiculaires entre elles. Ainsi, l'espaceur ne possède pas de faces chanfreinées, simplifiant grandement le procédé de découpe. In particular, when the spacer is made of glass, the spacer constitutes a bar of cut glass to present a rectangular section. In a rectangular section, the spacer has continuous straight faces perpendicular to each other. Thus, the spacer does not have chamfered faces, greatly simplifying the cutting process.
En variante, l'espaceur transparent est en matière plastique, en étant plein ou creux, notamment en SAN (styrène-acrylonitrile) ou en PETg (Polyéthylène téréphtalate glycolisé) ou en P MA (polyméthylmétacrylate), ou en polycarbonate, ou en polymethylpentene (TPX). Alternatively, the transparent spacer is made of plastic, being solid or hollow, especially SAN (styrene-acrylonitrile) or PETg (polyethylene terephthalate glycolized) or PMA (polymethylmetacrylate), or polycarbonate, or polymethylpentene (TPX).
Lorsque l'espaceur est en matière plastique, il se trouve que certains matériau plastiques utilisés sont perméables à la vapeur d'eau et aux gaz. Aussi, selon une caractéristique avantageuse de l'invention, l'espaceur en matière plastique transparente comporte sur au moins l'une de ses faces internes et externes, les faces internes et externes étant les faces parallèles et opposées respectivement en regard et à l'opposé de la lame d'air, un revêtement transparent d'étanchéité aux gaz et à la vapeur d'eau.  When the spacer is plastic, it happens that some plastic material used are permeable to water vapor and gases. Also, according to an advantageous characteristic of the invention, the transparent plastic spacer comprises on at least one of its inner and outer faces, the inner and outer faces being the opposite and opposite faces respectively opposite and to the opposite of the air gap, a transparent coating of gas and water vapor sealing.
Ce revêtement est mince. On entend par « mince », une épaisseur d'au plus 500 μηη. Le revêtement mince transparent d'étanchéité aux gaz et à la vapeur d'eau présente une épaisseur de préférence comprise en 2 nm et 200 μιη.  This coating is thin. The term "thin", a thickness of at most 500 μηη. The thin transparent gas and water vapor-proof coating has a thickness preferably of between 2 nm and 200 μm.
Le revêtement mince est un film rapporté sur l'espaceur ou une couche mince déposée. Son épaisseur est surtout liée au type de matériau utilisé et à son procédé de fabrication.  The thin coating is a film attached to the spacer or a deposited thin film. Its thickness is mainly related to the type of material used and its manufacturing process.
Dans le cas d'une couche mince déposée, celle-ci est déposée par toutes techniques, telles que par voie magnétron, évaporation, ou encore voie liquide.  In the case of a thin layer deposited, it is deposited by any technique, such as magnetron, evaporation, or liquid.
Le revêtement mince transparent étanche aux gaz et à la vapeur d'eau est à titre d'exemple préféré en oxyde de silicium, ou oxyde d'aluminium ou encore polysilazane.  The thin transparent coating impervious to gas and water vapor is, as a preferred example, made of silicon oxide, aluminum oxide or polysilazane.
Le revêtement mince peut recouvrir en outre les coins de la ou les faces interne et/externe et déborder sur les faces adjacentes qui sont parallèles aux feuilles de verre (faces de fixation de l'espaceur avec les feuilles de verre).  The thin coating may further cover the corners of the inner and / or outer faces and overflow onto adjacent faces that are parallel to the glass sheets (attachment faces of the spacer with the glass sheets).
Le revêtement mince recouvre de préférence la face interne de l'espaceur, qui est en regard de la lame d'air, c'est-à-dire à l'intérieur de vitrage isolant.  The thin coating preferably covers the inner face of the spacer, which is facing the air gap, that is to say inside insulating glazing.
Le revêtement mince peut recouvrir toutes les faces de l'espaceur.  The thin coating can cover all the faces of the spacer.
L'espaceur et son revêtement forment de préférence un ensemble unitaire obtenu lors de la fabrication de l'espaceur, c'est-à-dire que lorsque l'espaceur est monté dans le vitrage, il comprend déjà son revêtement. Le revêtement est solidaire de l'espaceur.  The spacer and its coating preferably form a unitary assembly obtained during the manufacture of the spacer, that is to say that when the spacer is mounted in the glazing, it already includes its coating. The coating is integral with the spacer.
Bien que ce revêtement soit positionné sur la tranche de l'espaceur, parallèlement au chant du vitrage, son impact visuel est nul par sa minceur et sa transparence. L'espaceur en matière plastique combiné à ce revêtement mince garantit la fonction d'étanchéité aux gaz et à la vapeur d'eau sans nécessiter de cordons épais de silicone comme dans l'art antérieur sur le chant/la face externe de l'espaceur. En outre, le positionnement de la double barrière d'étanchéité en interface selon l'invention entre l'espaceur et les feuilles de verre permet de positionner le chant/la face externe de l'espaceur copianairement avec la tranche des feuilles de verre, l'espaceur est de fait moins rentré vers l'intérieur du vitrage, procurant un effet de transparence maximisé pour l'ensemble du vitrage. Although this coating is positioned on the edge of the spacer, parallel to the edge of the glazing, its visual impact is zero by its thinness and transparency. The plastic spacer combined with this thin coating ensures the function of sealing gas and water vapor without the need for thick cords of silicone as in the prior art on the edge / outer face of the spacer . In addition, the positioning of the double interfacial sealing barrier according to the invention between the spacer and the glass sheets makes it possible to position the edge / outer face of the spacer copially with the edge of the glass sheets. The spacer is in fact less retracted towards the interior of the glazing, providing a maximized transparency effect for the entire glazing unit.
Selon une autre caractéristique, le vitrage est un double vitrage ou triple vitrage.  According to another characteristic, the glazing is a double glazing or triple glazing.
Le vitrage peut avantageusement être pourvu sur ses feuilles de verre d'un ou de plusieurs revêtement(s) bas-émissif(s) et/ou d'une couche anti-buée ou anti-givre, évitant ainsi des moyens de chauffage usuels, ce qui participe à une économie d'énergie. The glazing may advantageously be provided on its glass sheets with one or more low-emissive coating (s) and / or with an anti-fog or anti-icing layer, thereby avoiding usual heating means, which contributes to saving energy.
Enfin, l'invention est relative d'une part à un ouvrant comprenant un vitrage selon l'invention, et d'autre part à un meuble climatique, du type meuble réfrigéré, comportant au moins un ouvrant ou un vitrage de l'invention, ou une pluralité de vitrages accolés accolés les uns aux autres, les espaceurs transparents étant disposés au moins sur les côtés aboutés entre eux des vitrages. Finally, the invention relates firstly to an opening comprising a glazing unit according to the invention, and secondly to a climatic cabinet, of the refrigerated cabinet type, comprising at least one opening or a glazing unit of the invention, or a plurality of contiguous glazing joined to each other, the transparent spacers being arranged at least on the sides joined together glazing.
La présente invention est maintenant décrite à l'aide d'exemples uniquement illustratifs et nullement limitatifs de la portée de l'invention, et à partir des illustrations ci-jointes, dans lesquelles : The present invention is now described with the aid of examples which are only illustrative and in no way limit the scope of the invention, and from the attached illustrations, in which:
- La figure i illustre une vue schématique en perspective d'une façade d'un meuble réfrigéré intégrant une pluralité de vitrages selon l'invention ;  - Figure i illustrates a schematic perspective view of a facade of a refrigerated cabinet incorporating a plurality of glazing according to the invention;
- La figure 2 est une vue schématique partielle en coupe et de dessus d'un vitrage de l'invention ;  FIG. 2 is a partial diagrammatic view in section and from above of a glazing unit of the invention;
- La figure 3 est une vue en coupe schématique d'un vitrage de l'invention avec une variante d'espaceur, l'espaceur étant creux ;  - Figure 3 is a schematic sectional view of a glazing of the invention with a spacer variant, the spacer being hollow;
- Les figures 4a à 4d sont des vues schématiques de variantes de positionnement du revêtement mince d'étanchéité d'un espaceur pour un vitrage de l'invention, l'espaceur pouvant être plein ou creux.  - Figures 4a to 4d are schematic views of the positioning variants of the thin sealing liner of a spacer for a glazing unit of the invention, the spacer may be solid or hollow.
Les figures ne sont pas à l'échelle pour en faciliter la lecture. The figures are not scaled for easy reading.
Le meuble climatique 1 illustrée schématiquement sur la figure 1 comporte une pluralité d'ouvrants 2 comprenant chacun un vitrage isolant 3 conforme à l'invention.  The climate cabinet 1 schematically illustrated in Figure 1 comprises a plurality of openings 2 each comprising an insulating glazing unit 3 according to the invention.
Le meuble constitue par exemple un meuble réfrigéré à froid positif destiné à être installé le long d'une allée de magasin. On peut ainsi constituer selon l'invention un meuble avec toute une rangée d'ouvrants aboutés latéralement les uns aux autres verticalement selon leur tranche. The piece of furniture is for example a cold refrigerated furniture positive intended to be installed along a store aisle. One can thus constitute according to the invention a piece of furniture with any a row of openings abutting laterally to each other vertically according to their edge.
Dans le cas d'un meuble/d'une vitrine à froid positif, l'étanchéité étant moins critique que pour un meuble à froid négatif, l'ouvrant de l'invention comportant le vitrage isolant de l'invention n'a pas besoin de comprendre de montants verticaux formant cadre et pourvus de joints épais à la jonction de deux ouvrants/vitrages aboutés. Le vitrage de l'invention permet ainsi par la transparence de ses bords verticaux de procurer une surface transparente continue lorsque les vitrages sont accolés par leur tranche.  In the case of a piece of furniture / a positive cold showcase, the seal being less critical than for a negative cold cabinet, the opening of the invention comprising the insulating glass of the invention does not need to understand vertical uprights frame and provided with thick joints at the junction of two openings / glazing abutments. The glazing of the invention thus allows the transparency of its vertical edges to provide a continuous transparent surface when the windows are joined by their edge.
Chaque vitrage isolant comporte au moins deux feuilles de verre maintenues parallèlement espacées par un cadre dont les parties opposées verticales en position montée du vitrage sont transparentes. Each insulating glazing unit comprises at least two glass sheets held parallel spaced apart by a frame whose vertically opposed parts in the mounted position of the glazing are transparent.
La façade des vitrages et donc du meuble est ainsi épurée de tout cadre structurel et présente un aspect quasiment lisse de paroi de verre. On gagne de cette manière en espace de vision.  The facade of the glazing and thus the furniture is thus purified of any structural frame and has a virtually smooth glass wall appearance. We gain in this way in vision space.
Seul sera décrit ci-après la partie verticale transparente du cadre du vitrage et correspondant à l'invention, les parties horizontales étant généralement formées par des moyens usuels d'intercalaire et de moyens d'étanchéité qui ne sont pas transparents. De même, ne sera pas décrit l'ouvrant qui intègre le vitrage, les moyens d'articulation, les profilés de support et de cache de moyens d'articulation, le type de poignée. Only the transparent vertical part of the frame of the glazing and corresponding to the invention will be described below, the horizontal parts being generally formed by conventional means of spacer and sealing means which are not transparent. Similarly, will not be described the opening which incorporates the glazing, the hinge means, the support profiles and cache hinge means, the type of handle.
La figure 2 illustre une vue de dessus et partielle du vitrage isolant 3 montrant la partie intérieure verticale transparente 4 du cadre. Le vitrage isolant illustré est un double vitrage avec deux feuilles de verre. Dans le cas d'un triple vitrage avec trois feuilles de verre, le vitrage comprendrait deux parties transparente 4 de l'invention. Figure 2 illustrates a top view and partial of the insulating glass 3 showing the transparent vertical interior portion 4 of the frame. The insulating glazing shown is double glazed with two sheets of glass. In the case of triple glazing with three sheets of glass, the glazing would comprise two transparent portions 4 of the invention.
Le vitrage 3 comporte deux feuilles de verre 30 et 31 parallèles et espacées au moyen d'un élément intercalaire ou espaceur 5.  The glazing 3 comprises two sheets of glass 30 and 31 parallel and spaced apart by means of an intermediate element or spacer 5.
Les feuilles de verre 30 et 31 sont de préférence en verre trempé. L'épaisseur de chacune des feuilles de verre est comprise entre 2 et 5 mm, et est de préférence de 3 ou 4 mm afin de minimiser le poids global du vitrage et d'optimiser la transmission lumineuse.  The glass sheets 30 and 31 are preferably tempered glass. The thickness of each of the glass sheets is between 2 and 5 mm, and is preferably 3 or 4 mm in order to minimize the overall weight of the glazing and to optimize the light transmission.
Les feuilles de verre sont séparées entre elles par l'espaceur 5 pour ménager entre elles un volume formant une lame de gaz 32. La lame de gaz 32 présente une épaisseur d'au moins 4 mm et est adaptée en fonction des performances souhaitées du coefficient de transfert thermique U, sans être toutefois supérieure à 16 mm, voire 20 mm. The glass sheets are separated from each other by the spacer 5 to form between them a volume forming a gas blade 32. The gas strip 32 has a thickness of at least 4 mm and is adapted according to the desired performance of the thermal transfer coefficient U, without however being greater than 16 mm, or even 20 mm.
La lame de gaz est constituée d'air ou de préférence, pour renforcer le niveau d'isolation du vitrage, d'un gaz rare, choisi parmi l'argon, le krypton, le xénon, ou d'un mélange de ces différents gaz, selon un taux de remplissage d'au moins 85%. Pour un coefficient U encore amélioré, il sera préféré un remplissage avec au moins 92% de krypton ou de xénon.  The gas strip is made of air or preferably, to reinforce the insulation level of the glazing, a rare gas, chosen from argon, krypton, xenon, or a mixture of these different gases. , according to a filling rate of at least 85%. For a still improved U coefficient, it will be preferred a filling with at least 92% krypton or xenon.
L'espaceur 5 est de préférence à basse conductivité thermique, en présentant un coefficient de conductivité thermique d'au plus 1 W/m.K, de préférence inférieur à 0,7 W/m.K, et même inférieur à 0,4 W/m.K. The spacer 5 is preferably of low thermal conductivity, having a coefficient of thermal conductivity of at most 1 W / m.K, preferably less than 0.7 W / m.K, and even less than 0.4 W / m.K.
L'espaceur est entièrement en verre.  The spacer is entirely made of glass.
En variante, l'espaceur présente un corps en matière plastique transparente, du type styrène acrylonitrile (SAN) ou polypropylène par exemple.  Alternatively, the spacer has a transparent plastic body, such as styrene acrylonitrile (SAN) or polypropylene.
L'espaceur 5 est de forme générale parallélépipédique et comprend quatre faces, une face dite interne 50 en regard de la lame de gaz, une face opposée externe 51 en regard de l'extérieur du vitrage et deux faces dites face de fixation 52 et 53 en regard des feuilles de verre respectifs 30 et 31. L'espaceur peut présenter notamment au niveau de sa face interne 50 un profil à pans coupés vers les coins.  The spacer 5 is of generally parallelepipedal shape and comprises four faces, a so-called internal face 50 facing the gas strip, an opposite outer face 51 facing the outside of the glazing and two faces called attachment face 52 and 53 facing the respective glass sheets 30 and 31. The spacer may have in particular at its inner face 50 a cut-off profile to the corners.
L'espaceur 5 s'étend en longueur, ici de manière non représentée, sur toute la longueur de chacun des côtés au moins verticaux du vitrage.  The spacer 5 extends in length, here not shown, along the entire length of each of the at least vertical sides of the glazing.
L'espaceur présente une largeur, dimension transversale aux faces générales des feuilles de verre, équivalente à l'écartement souhaité des feuilles de verre.  The spacer has a width, transverse dimension to the general faces of the glass sheets, equivalent to the desired spacing of the glass sheets.
L'espaceur présente une épaisseur, distance séparant les faces interne 50 et externe 51 (entre le chant du vitrage et la lame de gaz ou d'air), qui est équivalente à la largeur si l'espaceur présente une section carrée, ou qui peut être notamment plus petite. De préférence, l'espaceur présente une épaisseur comprise entre 4 et 20 mm (et de préférence entre 9 et 15 mm).  The spacer has a thickness, a distance separating the internal 50 and outer 51 faces (between the edge of the glazing and the gas or air blade), which is equivalent to the width if the spacer has a square section, or which can be especially smaller. Preferably, the spacer has a thickness of between 4 and 20 mm (and preferably between 9 and 15 mm).
L'espaceur 5 est fixé par collage via ses faces de fixation 52 et 53 contre les faces internes respectives 30A et 31A des feuilles de verre 30 et 31, au moyen d'un joint structural 6 qui assure en outre une étanchéité à l'eau. Le matériau du joint structural 6 est transparent et étanche à l'eau, par exemple en silicone ou acrylique. The spacer 5 is fixed by bonding via its attachment faces 52 and 53 against the respective inner faces 30A and 31A of the glass sheets 30 and 31, by means of a structural seal 6 which also ensures a watertight seal. . The material of the structural seal 6 is transparent and waterproof, for example silicone or acrylic.
Le joint structural 6 est par exemple un ruban adhésif double-face.  The structural seal 6 is for example a double-sided adhesive tape.
L'épaisseur du joint structural 6 est comprise entre quelques micromètres et 2 mm selon la nature du matériau quant à son aptitude au collage notamment.  The thickness of the structural seal 6 is between a few micrometers and 2 mm depending on the nature of the material as to its ability to bond in particular.
Le joint structural 6 s'étend sur la longueur de l'espaceur d'un côté du vitrage, et selon une largeur limitée de chaque face de fixation 52 et 53 de l'espaceur.  The structural seal 6 extends along the length of the spacer on one side of the glazing, and according to a limited width of each attachment face 52 and 53 of the spacer.
Le joint structural 6 est positionné de sorte à déboucher du côté extérieur du vitrage. The structural seal 6 is positioned so as to open on the outside of the glazing.
De préférence, l'espaceur 5 par sa face externe 51 et chaque joint structural 6 en interface avec chaque feuille de verre sont coplanaires avec le chant des feuilles de verre. Preferably, the spacer 5 by its outer face 51 and each structural seal 6 in interface with each sheet of glass are coplanar with the edge of the glass sheets.
Le vitrage comporte en outre une barrière transparente et d'étanchéité aux gaz et à la vapeur d'eau.  The glazing further comprises a transparent barrier and sealing gas and water vapor.
Selon l'invention, la barrière d'étanchéité aux gaz et à la vapeur d'eau est constituée de moyens d'étanchéité 7 disposés en interface avec chaque feuille de verre 30 et 31 et les faces de fixation 52 et 53 de l'espaceur.  According to the invention, the gas and water vapor barrier consists of sealing means 7 arranged in interface with each glass sheet 30 and 31 and the fixing faces 52 and 53 of the spacer. .
Les moyens d'étanchéité 7 s'étendent d'une part sur la longueur de l'espaceur, et d'autre part selon l'épaisseur de l'espaceur en étant aboutés à chaque joint structural 6. Selon la vue en coupe de la figure 2, les moyens d'étanchéité 7 sont alignés avec le joint structural 6, parallèlement à chaque face de fixation 52 et 53 de l'espaceur.  The sealing means 7 extend on the one hand over the length of the spacer, and on the other hand according to the thickness of the spacer being abutted at each structural joint 6. According to the sectional view of the 2, the sealing means 7 are aligned with the structural seal 6, parallel to each attachment face 52 and 53 of the spacer.
Les moyens d'étanchéité débouchent du côté intérieur du vitrage en regard de la lame de gaz, de préférence sans dépasser de la face interne 50 de l'espaceur. The sealing means open on the inner side of the glazing facing the gas strip, preferably without exceeding the inner face 50 of the spacer.
Les moyens d'étanchéité 7 sont de préférence du butyle. The sealing means 7 are preferably butyl.
Les moyens d'étanchéité 7 présentent une épaisseur équivalente à celle du joint structurai 6. Lorsque l'espaceur est en verre, la configuration de la figure 2 convient parfaitement pour garantir l'étanchéité à l'eau et aux gaz et à la vapeur d'eau. Il n'est pas nécessaire d'ajouter du silicone sur la face externe de l'espaceur et entre les feuilles de verre, comme dans l'art antérieur. Par conséquent, la partie transparente 4 du cadre ainsi créée assure une étanchéité tout en minimisant très fortement l'impact visuel, aucune épaisseur de matériau de scellement n'étant en effet présente transversalement aux feuilles de verre, au niveau du chant du vitrage. En regard de la figure 3, lorsque l'espaceur 5 est en matière plastique transparente, il comporte de préférence selon l'invention un revêtement mince 54 en un matériau étanche aux gaz et à la vapeur d'eau solidaire de la face interne 50 et/ou externe 51 dudit espaceur. L'espaceur en matière plastique transparente peut être plein, ou bien creux comme schématiquement illustré sur la figure 3. The sealing means 7 have a thickness equivalent to that of the structural seal 6. When the spacer is made of glass, the configuration of FIG. 2 is perfectly suitable for guaranteeing water and gas and vapor tightness. 'water. It is not necessary to add silicone on the outer face of the spacer and between the glass sheets, as in the prior art. Therefore, the transparent portion 4 of the frame thus created provides a seal while minimizing very strongly the visual impact, no thickness of sealing material being indeed present transversely to the glass sheets at the edge of the glazing. With reference to FIG. 3, when spacer 5 is made of transparent plastic material, it preferably comprises, according to the invention, a thin coating 54 made of a material that is impervious to gases and to water vapor integral with inner face 50 and or external 51 of said spacer. The transparent plastic spacer may be solid or hollow as schematically illustrated in FIG.
En regard de la figure 4a, le revêtement 54 peut recouvrir l'une des faces interne ou externe et les coins de l'espaceur en débordant sur les faces de fixation 52 et 53,  With reference to FIG. 4a, the coating 54 may cover one of the inner or outer faces and the corners of the spacer may protrude over the attachment faces 52 and 53,
La figure 4b illustre la variante pour laquelle le revêtement 54 est à la fois sur les faces interne 50 et externe 51. FIG. 4b illustrates the variant for which the coating 54 is on both the inner face 50 and outer face 51.
La figure 4c correspond à la figure 4b, le revêtement 54 débordant sur la face de fixation.Figure 4c corresponds to Figure 4b, the coating 54 projecting over the attachment face.
La figure 4d illustre une variante pour laquelle le revêtement recouvre toutes les faces de l'espaceur. Figure 4d illustrates a variant for which the coating covers all the faces of the spacer.
Ce revêtement est mince avec de préférence une épaisseur comprise entre 2 nm et 200 μητί. Le revêtement mince est un film rapporté sur l'espaceur ou une couche mince déposée. Son épaisseur est surtout liée au type de matériau utilisé et à son procédé de fabrication.  This coating is thin, preferably with a thickness of between 2 nm and 200 μητί. The thin coating is a film attached to the spacer or a deposited thin film. Its thickness is mainly related to the type of material used and its manufacturing process.
Dans le cas d'une couche mince déposée, celle-ci est déposée par toutes techniques, telles que par voie magnétron, évaporation, ou encore voie liquide.  In the case of a thin layer deposited, it is deposited by any technique, such as magnetron, evaporation, or liquid.
Le revêtement mince transparent étanche aux gaz et à la vapeur d'eau est à titre d'exemple préféré en oxyde de silicium, ou oxyde d'aluminium ou encore polysilazane.  The thin transparent coating impervious to gas and water vapor is, as a preferred example, made of silicon oxide, aluminum oxide or polysilazane.
Du fait de la très fine épaisseur du revêtement 54, celui-ci bien que solidaire du chant de l'espaceur, est imperceptible à l'œil nu, ce qui ne perturbe pas l'impression visuelle transparente que l'on doit avoir de l'ensemble du vitrage, en particulier à la jointure de deux vitrages accolées par leurs côtés verticaux comprenant les espaceurs transparents. Due to the very thin thickness of the coating 54, the latter although integral with the edge of the spacer, is imperceptible to the naked eye, which does not disturb the transparent visual impression that must be made of the all of the glazing, in particular at the joint of two glazing joined by their vertical sides comprising the transparent spacers.
La fonction d'étanchéité aux gaz et à la vapeur d'eau est garantie sur toute la tranche du vitrage sans trouble visuel grâce d'une part, à la seconde barrière 7 positionnée et limitée entre l'espaceur et les feuilles de verre, et d'autre part, soit à l'espaceur en verre, soit à l'espaceur transparent en plastique possédant une revêtement mince transparente solidaire du chant de l'espaceur. The function of sealing against gases and water vapor is guaranteed on the entire edge of the glazing without visual disturbance on the one hand, the second barrier 7 positioned and limited between the spacer and the glass sheets, and on the other hand, either to the glass spacer or to the transparent plastic spacer having a transparent thin coating integral with the edge of the spacer.

Claims

REVENDICATIONS
1. Vitrage isolant (3) comportant au moins deux feuilles de verre (30, 31) espacées par au moins une lame d'air ou de gaz (32), au moins un espaceur agencé à la périphérie des feuilles de verre et maintenant espacés les deux feuilles de verre, au moins un espaceur (5) étant transparent et disposé sur l'un d'un côtés du vitrage, ainsi qu'une première barrière d'étanchéité à l'eau, formée par au moins un joint structural (6) et dont le matériau est étanche à l'eau, et une seconde barrière (7) d'étanchéité aux gaz et à la vapeur d'eau, les deux barrières d'étanchéité associées à l'intercalaire transparent étant en matériau transparent, caractérisé en ce que la seconde barrière d'étanchéité aux gaz et à la vapeur d'eau (7) et en matériau transparent est agencée en interface entre les feuilles de verre (30, 31) et l'espaceur (5) du côté intérieur du vitrage, le joint structural (6) également en interface étant positionné abouté et aligné avec la seconde barrière. An insulating glazing unit (3) comprising at least two sheets of glass (30, 31) spaced by at least one air or gas gap (32), at least one spacer arranged at the periphery of the glass sheets and now spaced apart the two sheets of glass, at least one spacer (5) being transparent and arranged on one side of the glazing, and a first water-proofing barrier formed by at least one structural seal ( 6) and whose material is waterproof, and a second barrier (7) for sealing against gas and water vapor, the two sealing barriers associated with the transparent interlayer being made of transparent material, characterized in that the second gas and water vapor barrier (7) and transparent material is arranged in an interface between the glass sheets (30, 31) and the spacer (5) on the inner side glazing, the structural joint (6) also in interface being positioned butted and aligned with c the second barrier.
2. Vitrage selon la revendication 1, caractérisé en ce que la seconde barrière d'étanchéité (7) s'arrête au niveau du chant de l'espaceur en regard de la lame de gaz. 2. Glazing according to claim 1, characterized in that the second sealing barrier (7) stops at the edge of the spacer facing the gas blade.
3. Vitrage selon la revendication 1 ou 2, caractérisé en ce que la seconde barrière d'étanchéité (7) et le joint structural (6) s'étendent sur l'épaisseur de l'espaceur pour chaque face de l'espaceur en vis-à-vis de chaque feuille de verre. 3. Glazing according to claim 1 or 2, characterized in that the second sealing barrier (7) and the structural seal (6) extend over the thickness of the spacer for each face of the screw spacer. to each sheet of glass.
4. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde barrière d'étanchéité (7) présente une épaisseur équivalente à l'épaisseur du joint structural, en particulier de quelques micromètres à 2 mm. 4. Glazing according to any one of the preceding claims, characterized in that the second sealing barrier (7) has a thickness equivalent to the thickness of the structural seal, in particular a few micrometers to 2 mm.
5. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau transparent d'étanchéité aux gaz et à la vapeur d'eau de la seconde barrière (7) est du PIB. 5. Glazing according to any one of the preceding claims, characterized in that the transparent material for sealing gas and water vapor of the second barrier (7) is PIB.
6. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le joint structural (6) est dans un matériau transparent adhésif et étanche à l'eau, tel qu'en acrylique ou silicone, réticulable ou non sous l'action des ultraviolets. 6. Glazing according to any one of the preceding claims, characterized in that the structural seal (6) is in a transparent adhesive and waterproof material, such as acrylic or silicone, crosslinkable or not under the action ultraviolet light.
7. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'espaceur transparent (5) est en verre. 7. Glazing according to any one of the preceding claims, characterized in that the transparent spacer (5) is glass.
8. Vitrage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'espaceur transparent (5) est en matière plastique, en étant plein ou creux, notamment est en SAN ou en PETg ou en PMMA, ou en polycarbonate ou en TPX. 8. Glazing according to any one of claims 1 to 6, characterized in that the transparent spacer (5) is plastic, being solid or hollow, in particular is SAN or PETg or PMMA, or polycarbonate or in TPX.
9. Vitrage selon la revendication précédente, caractérisé en ce que l'espaceur (5) en matière plastique transparente comporte sur au moins l'une de ses faces interne et externe, les faces internes et externes étant les faces parallèles et opposées respectivement en regard et à l'opposé de la lame d'air, un revêtement transparent mince (54) d'étanchéité aux gaz et à la vapeur d'eau, en particulier d'une épaisseur d'au plus 500 μιη, de préférence comprise en 2 nm et 200 μιη. 9. Glazing according to the preceding claim, characterized in that the spacer (5) of transparent plastic material comprises on at least one of its inner and outer faces, the inner and outer faces being the opposite and opposite faces respectively opposite and opposite the air knife, a thin transparent coating (54) for sealing against gas and water vapor, in particular having a thickness of at most 500 μιη, preferably in the range of 2 nm and 200 μιη.
10. . Vitrage selon la revendication précédente, caractérisé en ce que le revêtement mince (54) est un film rapporté sur l'espaceur ou une couche mince déposée, notamment déposée par voie magnétron, évaporation, ou encore voie liquide. 10.. Glazing according to the preceding claim, characterized in that the thin coating (54) is a film attached to the spacer or a deposited thin film, in particular deposited by magnetron, evaporation or liquid route.
11. Vitrage selon la revendication 9 ou 10, caractérisé en ce que le revêtement mince transparent (54) est en oxyde de silicium, ou oxyde d'aluminium ou encore polysilazane. 11. Glazing according to claim 9 or 10, characterized in that the thin transparent coating (54) is silicon oxide, or aluminum oxide or polysilazane.
12. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le vitrage est un double vitrage ou triple vitrage. 12. Glazing according to any one of the preceding claims, characterized in that the glazing is a double glazing or triple glazing.
13. Vitrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est pourvu d'un ou de plusieurs revêtements bas-émissifs et/ou d'une couche antibuée ou antigivre. 13. Glazing according to any one of the preceding claims, characterized in that it is provided with one or more low-emissive coatings and / or an anti-fog or anti-icing layer.
14. Ouvrant (2) comportant un vitrage (3) selon l'une quelconque des revendications précédentes. 14. Opening (2) comprising a glazing unit (3) according to any one of the preceding claims.
15. Meuble climatique, tel qu'un meuble réfrigéré, comportant au moins un ouvrant selon la revendication précédente ou une pluralité de vitrages selon l'une quelconque des revendications 1 à 13, les vitrages étant accolés les uns aux autres, les espaceurs transparents (5) étant disposés au moins sur les côtés aboutés entre eux des vitrages. 15. Climate cabinet, such as a refrigerated cabinet, comprising at least one opening according to the preceding claim or a plurality of glazing according to any one of claims 1 to 13, the glazing being contiguous to each other, the spacers transparent (5) being arranged at least on the sides joined together glazing.
EP17709922.3A 2016-03-18 2017-02-23 Insulating glazing unit, in particular for a climate chamber Withdrawn EP3430225A1 (en)

Applications Claiming Priority (2)

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FR1652345A FR3048860B1 (en) 2016-03-18 2016-03-18 INSULATING GLAZING, IN PARTICULAR FOR A CLIMATIC ENCLOSURE
PCT/EP2017/054175 WO2017157634A1 (en) 2016-03-18 2017-02-23 Insulating glazing unit, in particular for a climate chamber

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EP3430225A1 true EP3430225A1 (en) 2019-01-23

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US (1) US10791849B2 (en)
EP (1) EP3430225A1 (en)
JP (1) JP2019509966A (en)
KR (1) KR20180122631A (en)
BR (1) BR112018068382B1 (en)
CL (1) CL2018002598A1 (en)
CO (1) CO2018008982A2 (en)
FR (1) FR3048860B1 (en)
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FR3118087A1 (en) 2020-12-22 2022-06-24 Saint-Gobain Glass France INSULATING GLAZING PARTICULARLY FOR CLIMATIC ENCLOSURES
FR3118088A1 (en) 2020-12-22 2022-06-24 Saint-Gobain Glass France INSULATING GLASS WITH IMPROVED SPACER

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FR3118088A1 (en) 2020-12-22 2022-06-24 Saint-Gobain Glass France INSULATING GLASS WITH IMPROVED SPACER
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KR20180122631A (en) 2018-11-13
FR3048860B1 (en) 2018-07-27
FR3048860A1 (en) 2017-09-22
CL2018002598A1 (en) 2018-12-21
BR112018068382A2 (en) 2019-01-15
US20190090660A1 (en) 2019-03-28
JP2019509966A (en) 2019-04-11
BR112018068382B1 (en) 2023-02-07
CO2018008982A2 (en) 2018-08-31
US10791849B2 (en) 2020-10-06
WO2017157634A1 (en) 2017-09-21
MX2018011256A (en) 2019-02-18

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