EP3113653B1 - Elément vitré isolant - Google Patents

Elément vitré isolant Download PDF

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Publication number
EP3113653B1
EP3113653B1 EP15705978.3A EP15705978A EP3113653B1 EP 3113653 B1 EP3113653 B1 EP 3113653B1 EP 15705978 A EP15705978 A EP 15705978A EP 3113653 B1 EP3113653 B1 EP 3113653B1
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EP
European Patent Office
Prior art keywords
glazed element
glazing
glass
compartment
horizontal
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.)
Active
Application number
EP15705978.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3113653A1 (fr
Inventor
Nicolas BOUCHER
Pierre Schneider
Olivier Bouesnard
Jean-Philippe BIARD
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.)
AGC Glass Europe SA
Original Assignee
AGC Glass Europe 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
Priority claimed from EP14158278.3A external-priority patent/EP2915460A1/fr
Application filed by AGC Glass Europe SA filed Critical AGC Glass Europe SA
Priority to PL15705978T priority Critical patent/PL3113653T3/pl
Publication of EP3113653A1 publication Critical patent/EP3113653A1/fr
Application granted granted Critical
Publication of EP3113653B1 publication Critical patent/EP3113653B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • 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
    • 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
    • E06B3/66333—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
    • 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
    • E06B3/66371—Section members positioned at the edges of the glazing unit positioned entirely outside the gap between the 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
    • E06B2003/66385—Section members positioned at the edges of the glazing unit with special shapes
    • 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
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/48—Wings connected at their edges, e.g. foldable wings
    • E06B3/481—Wings foldable in a zig-zag manner or bi-fold wings
    • 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
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • 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
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/006—Doors, windows, or like closures for special purposes; Border constructions therefor for furniture

Definitions

  • the field of the invention is that of insulating glass elements, in particular that of insulating glass elements for refrigerated enclosure furniture. These glazed elements can be used in all types of applications such as glazing for refrigerator doors, freezer doors, or even utility glazing. However, any other application requiring such insulating glazed elements can lead to the implementation of the invention. An example of such an application is that of building windows with high performance thermal insulation.
  • the refrigerated cabinet also called refrigerated cabinet used in most commercial premises to offer for sale and / or consumption products that must be stored at temperatures below 10 ° C, such as foodstuffs, is often equipped with glazed elements which transforms it into refrigerated sales cabinet. These pieces of furniture allow the display of the products by the consumer / customer and in particular a self-service use while keeping the products at a determined temperature.
  • the refrigerated cabinet thus represents the last link in the food refrigeration chain before the product ends up in the possession of the consumer.
  • the enhancement of products and especially foodstuffs is essential but this must not be done to the detriment of the quality of their conservation.
  • the refrigerated cabinet is used to present and / or display the products in a useful volume at a determined storage temperature (generally less than 10 ° C).
  • the display of products and more particularly of foodstuffs has a primordial role in the sale of products. Good exposure depends in particular on good visual access to the products contained in the furniture. refrigerated compartment without having to open it.
  • the refrigerated cabinet must maintain a certain temperature and ensure the conservation of products which must be cooled or frozen.
  • furniture should at least protect products against thermal attacks of all kinds, such as closing and opening of doors.
  • the roles of exhibiting and preserving products at a determined temperature in refrigerated enclosure cabinets are in total contradiction since the consumer must be able to dispose of the products contained in the refrigerated enclosure cabinet while benefiting from the cabinet.
  • the document GB 2 162 228 discloses a double glazing for a showcase consisting of two sheets of glass held in parallel position and spaced apart by spacers arranged between these sheets.
  • the spacers contain a drying material and are formed all or part of transparent resinous material to allow good visibility of the merchandise maintained in the display case and to prevent condensation from forming on the interior surfaces of the glass sheets.
  • the document GB 2 162 228 does not deal with the problem of reducing the visual and spatial dimensions of the frame associated with the double glazing.
  • the glazing of this document comprises a spacer separated from the peripheral seal by a reinforcement which has a role to prevent the penetration of ambient humidity into the glazing.
  • the document WO 2014/009244 discloses a food refrigerator having better visibility of the food placed therein.
  • the door of this document comprises at the level of its movable support a lateral cross member.
  • the document FROM 10 2011 009879 discloses a system for joining glass sheets which is vapor-tight by means of double-sided adhesive tape.
  • the double-sided adhesive tape may include a transparent matrix.
  • this document does not disclose a glazed element comprising a frame with a movable support devoid of side rails.
  • the object of the invention is in particular to overcome these drawbacks of the prior art.
  • an objective of the invention in at least one of its embodiments, is to provide an opening insulating glazed element for a refrigerated enclosure cabinet which can be securely and easily attached to the frame of a refrigerated cabinet. .
  • an objective of the invention in at least one of its embodiments, is to provide an opening glazed element for a refrigerated enclosure cabinet which is inexpensive while maintaining good thermal insulation properties and this more longer than the glazed elements conventionally used.
  • Another objective of the invention in at least one of its embodiments, is to implement such an opening glazed element which provides a wide opening for a refrigerated enclosure cabinet while avoiding as much as possible the heat exchanges with the outdoor ambience.
  • Another objective of the invention in at least one of its embodiments, is to provide an opening glazed element for a refrigerated enclosure cabinet which makes it possible to ensure effective conservation of the products contained in the refrigerated cabinet while reducing the temperature. energy consumption to maintain the required temperature inside the refrigerated cabinet.
  • Another objective of the invention in at least one of its embodiments, is to provide such a glazed element which makes it possible to optimize the energy efficiency of refrigerated cabinets while retaining the role of displaying the products contained in the cabinet. refrigerated enclosure.
  • Another objective of the invention is to produce a refrigerated enclosure cabinet meeting the sealing criteria of these types of cabinets and offering an embodiment that is easy to use and economically advantageous.
  • Another objective of the invention is to be able to be implemented on refrigerated cabinets already in service in order to enable them to meet the current energy efficiency criteria of this type of cabinet via an easy and economically advantageous implementation of the invention.
  • intermediate frame denotes a rigid element arranged between the glass sheets near the periphery thereof.
  • the intermediate frame according to the glazed element according to the invention has the shape of a quadrilateral which matches the shape of the glazed element.
  • the quadrilateral is a parallelogram. Even more preferably, the quadrilateral is a rectangle or a square.
  • the general principle of the invention is based on the implementation of an intermediate frame in an insulating element which, in addition to its property of maintaining the two sheets of glass at a certain distance from each other, has other characteristics. such as transparency on the vertical edges and structural properties on the horizontal edges which allow the glazing to be fixed by a direct connection between the intermediate frame and the movable support of the frame.
  • the intermediate frame according to the invention is formed by virtue of at least one fixing means connecting the vertical spacers and the horizontal spacers together.
  • fixing means it is necessary to include a connection between at least 2 elements to be assembled by means of a pressure, a glue, a plug, a screw type steel screw, steel zinc-plated, stainless steel or bronze, or any other means ensuring the connection between said elements to be assembled.
  • the peripheral joints on the vertical edges are transparent.
  • the movable support supporting the glazing is devoid of lateral cross members while offering a high-performance solution both from the point of view of thermal insulation and of its mechanical resistance.
  • Such a glazed element has the advantage of providing a larger transparent surface due to the absence of lateral cross members on the mobile support, the presence of an intermediate frame and transparent peripheral seals on the vertical sides while allowing easy fixing. and economical as well as very good thermal insulation.
  • Thermal insulation is usually determined by the overall performance of a glazed element in multiple glazing, defined by Ug, the heat transfer coefficient of the glazing (calculated according to the EN673 and ISO10292 standard) and Uw, that of the window. It is observed that several factors influence this coefficient, for example, the thermal bridges linked to the glass as such, the fixing points of the glazing on the supporting structure, the joints distributed over the entire surface of the glazed element and finally the Peripheral connecting joints between each glazing unit, commonly called spacers.
  • the thermal improvement generally remains insufficient and the use of such multiple glazing units, because of their weight, requires the use of a complete frame, extending over the entire periphery of the glazing unit, which gives them good mechanical strength but is a weak point in obtaining good thermal insulation.
  • the presence of a complete frame creates a significant footprint, both spatial and visual.
  • movable or opening support is understood to mean the movable part of the frame which supports the glazing and which makes it possible to open and close the glazed element.
  • the invention proposes to replace the conventional insulating glazed elements included in a complete frame, a glazed element comprising at least one insulating glazing consisting of at least two sheets of glass supported by a movable support without lateral cross members on the lateral edges. , thus having a lower thickness while giving it better thermal insulation and a larger transparent surface.
  • the glazed element can comprise at least two juxtaposed insulating glazing units.
  • a larger surface such as a refrigerated cabinet with a large capacity or even a shelf offering at least two openings, the two multiple glazings being adjoining, the consumer is not visually bothered by the presence of side rails. The consumer then has the impression that the refrigerated cabinet has only one transparent surface.
  • the opening mobile support comprises horizontal profiles extending over the upper and / or lower edges of the glazing, which, with the profiles of the fixed support, create water-tight barriers. the air.
  • the intermediate frame which maintains the at least two sheets of glass at a certain distance from each other is composed of at least two horizontal spacers and at least two vertical spacers.
  • the horizontal spacers are composed of at least a first and a second distinct and contiguous compartments.
  • the second compartment is not in contact with the glass sheets and is immersed in the second peripheral seal, the peripheral seal thus having a structural role in addition to its usual functions of tightness to water, to air, etc.
  • the horizontal spacer according to the invention makes it possible, thanks to at least one fixing means passing through the peripheral seal, to secure the glazing to the movable support of the frame.
  • the vertical spacer is formed from a transparent resin.
  • the horizontal and vertical spacers are secured to each other by at least one fixing means in order to form the intermediate frame.
  • the intermediate frame thus formed has many advantages since it makes it possible to increase the transparent surface of the glazed element thanks to the use of transparent vertical spacers as well as to increase the structural rigidity of the glazed element thanks to the use of horizontal spacers comprising at least two compartments.
  • the intermediate frame according to the invention allows easy and robust attachment of the glazing to the movable part of the frame. This is particularly advantageous because the invention makes it possible to dispense with the vertical upright of the frame conventionally used.
  • the intermediate frame according to the invention once formed can be stored until it is integrated into a multiple glazing thus improving productivity while facilitating the manufacture of the insulating glazing.
  • the second compartment of the horizontal spacer is juxtaposed with the external part of the first compartment, the first compartment having its internal part directed towards the inside of the glazing and in direct contact with the internal space and its external part directed towards the outside of the glazing.
  • the second compartment located towards the outside of the glazing is then intended to receive at least one fixing means making it possible to connect the insulating glazing to the movable support of the frame without disturbing the thermal insulation of the insulating glazing.
  • the first and second compartments of the horizontal spacer are hollow and a desiccant material is introduced into the first compartment located towards the interior of the glazing.
  • the first and second compartments of the horizontal spacer are full and a desiccant material is incorporated into the first compartment located towards the interior of the glazing.
  • the second compartment of the horizontal spacer is sandwiched between the first compartment and the internal face of the glass sheet which is not in contact with the first compartment.
  • An example of such a particular embodiment is to use a first hollow compartment and a second solid compartment.
  • the solid compartment is intended to receive at least one fixing means making it possible to fix the insulating glazing to the movable support of the glazing.
  • the faces of double glazing or multiple glazing are conventionally numbered from 1 to 4 from the outside to the inside, the internal faces 2 and 3 being the opposite sides and delimiting the internal space.
  • the intermediate frame makes it possible to bind the at least one first and second sheets of glass together and to fix the insulating glazing to the movable support of the frame.
  • the horizontal spacer is formed of a single section comprising at least a first and a second compartment.
  • the horizontal spacer is formed by the combination of at least two profiles of different nature and / or shape. Another variant still consists in combining a profile running the entire length of the horizontal spacer with pieces of profiles arranged discontinuously forming studs. The means for fixing the insulating glazing to the movable support of the frame is then linked to the studs.
  • the movable support of the frame is devoid of lateral cross members on the lateral edges.
  • the mobile support can take the form of a U-shaped or L-shaped section profile which will be fixed directly to the insulating glazing at the level of its lower and upper edges by means of a fastening means. introduced into the second compartment of the horizontal spacer of the intermediate frame.
  • the transparent surface of the glazed element according to the invention is increased. This has an even more marked advantage if the glazed elements according to the invention are used for a shelf of refrigerated cabinets.
  • linear is meant a set of refrigerated cabinets which can be aligned, placed in L, Z, ...
  • the at least two vertical spacers of the intermediate frame are formed from a transparent resin.
  • transparent resin is understood to mean a chemical substance used for the manufacture of a plastic material or even the plastic material itself, which allows light to pass and makes it possible to see through it.
  • the transparent spacer is formed from a transparent resin chosen from among polymethylmetacrylate (PMMA), polycarbonate, polystyrene (PS), polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), nylon or a mixture of these compounds.
  • PMMA polymethylmetacrylate
  • PS polystyrene
  • PVC polyvinyl chloride
  • ABS acrylonitrile butadiene styrene
  • the intermediate frame implemented in the invention has the advantage of opposing any possible exchanges of gas, humidity and dust between the external environments and the gas layer of the glazing while being transparent over at least the side parts, thus making it possible to see through the products contained in the refrigerated enclosure cabinet without the view of the consumer being obstructed by the presence of an intermediate frame comprising non-transparent side spacers or more particularly the presence of side rails.
  • the spacers used in multiple insulating glazing units are generally a hollow metal profile, extruded or formed, or made of organic material, or else a profile with assembly brackets or a profile bent at the angles. In the latter case, the spacer consists of a continuous section bent at the corners.
  • the first transparent peripheral seal implemented between the vertical spacers of the intermediate frame and each of the glass sheets constituting the glazing is transparent.
  • the first peripheral seal commonly known under the name of sealing barrier is formed from a transparent resin chosen from a double-sided acrylic tape, modified acrylic, - rubber or silicone, more commonly known under the name "double adhesive tape.
  • These materials in addition to being transparent, have a good performance in terms of impermeability to water vapor and gases and also have good adhesion to glass while being resistant to ozone, oxygen, gases. ultraviolet.
  • the peripheral seal is a bead of mastic generally based on polyisobutylene, more commonly known as butyl, which is particularly effective in terms of sealing against water vapor and gases but whose mechanical performance is insufficient to hold the sheets of glass between them.
  • the second peripheral sealing joint is a mastic with a structural function, such as silicone, polyurethane (PU), modified silicone (MS-Polymer).
  • PU polyurethane
  • MS-Polymer modified silicone
  • a second peripheral seal along the vertical edges of the glazing can be used.
  • the second peripheral seal is made from a resin chosen from an adhesive comprising silicone, hybrid mastic comprising silicone and polyurethane, hot melt or a mixture of these different compounds.
  • These compounds exhibit good adhesion to the glass sheets and mechanical properties enabling them to ensure the retention of the glass sheets to the spacer.
  • these compounds are elastomers which exhibit elastic properties after crosslinking. They exhibit good resistance to oxidation and exhibit low water vapor permeability.
  • Silicones which are elastomers with one or two components, are particularly preferred due to their adhesion to glass, their resistance to external agents and their aging.
  • Butyls of the “hotmelt” type are hot-melt rubbers with good resistance to moisture penetration. Their consistency firm at normal temperatures makes them good candidates as sealants.
  • the horizontal edges of the glazing comprising the intermediate frame as well as the peripheral joints are masked by a screen printing applied to one of the faces of at least one sheet of glass.
  • the screen printing is applied to the glass sheet which will be directed towards the outside of the refrigerated enclosure (face 4).
  • the movable support present only on the horizontal edges of the glazing, can also play part of this role, namely to hide the edge of the glazing which is not transparent.
  • the at least one insulating glazing of the glazed element has a heat transfer coefficient Ug ranging from 0.3 to 1.8, preferably from 0.6 to 1.8 and most preferably 1.0 to 1.8 W / m 2 .
  • the heat transfer coefficient Ug corresponds to the quantity of heat that the material lets through. This type of glass provides high insulation performance and therefore allows energy savings and meets new regulations in terms of energy savings.
  • the at least one insulating glazing comprises at least a first and a second glass sheets associated together by means of an intermediate frame, said sheets being of different sizes and can therefore be staggered over the entire periphery of the glazing.
  • This is called asymmetric glazing.
  • This difference in size between the at least first and second sheet of glass has the advantage of being able to easily implement on this part the mechanical mounting of the mobile support on the horizontal or lower and upper edges of a multiple glazing or else of place a heating network there which could be placed on the offset part of the glass to prevent the appearance of condensation at the edge of the glazing.
  • the at least one insulating glazing comprises at least one sheet of safety glass.
  • sheet of safety glass is understood to mean thermally toughened glass or else laminated glass.
  • This type of glass protects people against the risk of injury in the event of glass breakage.
  • the invention also relates to the use of an insulating glazed element according to the invention as the door of a refrigerated enclosure cabinet.
  • the invention also relates to a refrigerated enclosure cabinet comprising at least one glazed element as described above.
  • the refrigerated enclosure cabinet comprises at least one glazed element which comprises at least two insulating glazing units.
  • the refrigerated enclosure cabinet comprises at least one glazed element which comprises at least two insulating glazing and the sealing of which between the at least two insulating glazing is produced by means of a transparent sealing element positioned on at least the side edge adjoining the side edge of the neighboring glazing.
  • the invention also relates to a partly transparent intermediate frame arranged in an insulating multiple glazing which allows the glazing to be securely and easily attached to the frame of the glazed element.
  • refrigerated enclosure cabinets also called refrigerated or refrigerated cabinets used in most commercial premises to offer for sale and / or consumption products that must be kept at determined temperatures, are often equipped with glazed elements that transform them into refrigerated sales cabinets.
  • these pieces of furniture allow the visualization of the products by the consumer / customer and a self-service use, while ensuring that the temperature is maintained inside the cabinet.
  • the display of food has a primordial role in the sale of products. Good exposure depends in particular on good visibility of the products contained in the refrigerated cabinet. However, during the exhibition, the refrigerated cabinet must maintain a certain temperature and ensure the preservation of products which must be cooled or frozen.
  • Refrigerated cabinets are generally in four parts, namely, the supporting structure of the cabinet, refrigerating elements, the useful sales space, in other words the container and preferably glass doors to allow the supply. refrigerated cabinet and consumer access to products offered for sale.
  • the supporting structure of the cabinet consists mainly of an insulated envelope in the form of sandwich panels of the “steel-insulating foam-steel” type.
  • the quality of the installation and the thickness of the insulation will determine the energy performance of the furniture in terms of penetrations (or negative perdition).
  • Today, refrigerated cabinets tend to be more and more aesthetic, in particular by having a supporting structure made of glass. This raises the question of energy performance.
  • the glazed elements such as for example shown by the figure 7 can be used to form the doors of the refrigerated cabinet or to form the refrigerated cabinet as such.
  • the refrigeration elements are generally located inside the cabinet.
  • the invention will be described more particularly for refrigerated enclosure cabinets or else refrigerated sales cabinets in the form of a cabinet, but the invention is not limited to this type of cabinet. Indeed, there are several variants of these refrigerated units for sale. Some have the form cabinet and then it is the door itself which is a transparent glazed element, others constitute chests and it is the horizontal cover which is glazed to allow observation of the contents and still others constitute showcases counters and it is the part which separates the public from the goods which is glazed. Whatever the variant of these refrigerated sales units, it is also possible to make glass walls so that all the contents are visible from the outside.
  • the goods In this type of display, it is necessary for the goods to remain perfectly visible to customers so that it is possible to pre-select the goods without opening the cabinet and to avoid unnecessary loss of energy and therefore lead to overconsumption of energy.
  • the overconsumption of energy is often also linked to the use of glazed elements which are not sufficiently insulating.
  • the glazed part, more particularly the opening glazed part of the refrigerated cabinet also called the opening or door of the refrigerated sales cabinet should preferably not be delimited by a frame or at least on its side edges to give the customer the impression that the cabinet is provided with a single-piece opening, without separation, while ensuring its role of thermal insulation. It is also necessary to avoid that the glass parts of the furniture and particularly the doors are not covered with condensation and that they resist the pressures due to the frequent opening / closing of these doors by the customers or the employees in charge of supplying the refrigerated cabinets.
  • refrigerated cabinet doors include double or triple glazing which requires the use of a frame which extends over the entire periphery of the glazing in order to give it good mechanical strength.
  • this complete frame in addition to creating a significant spatial and visual footprint, does not always have good thermal insulation and is not aesthetic.
  • the insulating glazing 100 is a double glazing comprising a first 10 and a second 11 glass sheets of the soda-silica-calcium type. These glass sheets have a thickness ranging from 0.5 mm to 15 mm (for example sheets of soda-silica-calcium glass 4 mm thick) associated together by means of an intermediate frame 50 which maintains them. at a certain distance from each other.
  • the glass sheets 10 and 11 can be replaced by laminated glasses comprising at least one stack of a sheet of polyvinyl butyral (PVB) plastic material sandwiched between two sheets of glass.
  • PVB polyvinyl butyral
  • Such stacks are presented with total glass thicknesses (not including the thickness of the PVB sheet (s)) ranging from 4 mm up to and including 24 mm.
  • an internal space 15 comprising a blade of an insulating gas is closed by the spacers and a first peripheral seal 13 along the horizontal edges 101 and a first peripheral seal 27 along the vertical edges. 102.
  • a second peripheral seal 14 is placed along the horizontal edges 101.
  • a second peripheral seal 28 may be placed along the vertical edges 102, as illustrated in FIG. figure 3b .
  • the glass sheets 10, 11 can be of different sizes.
  • the intermediate frame 50 is composed of at least two vertical spacers 25 and at least two horizontal spacers 26.
  • the horizontal spacers are connected to the vertical spacers by at least one fixing means 24 connecting the vertical spacer 25 to the vertical spacers. compartment 17 of the horizontal spacer 26.
  • the horizontal spacer 26 is composed of at least a first 12 and a second 17 compartments, separate and contiguous.
  • the second compartment of the horizontal spacer is juxtaposed with the external part of the first compartment 12, the first compartment having its internal part directed towards the inside of the glazing and in direct contact with the internal space and its external part. directed towards the outside of the glazing as shown in figure 2 .
  • the second compartment of the horizontal spacer can be sandwiched between the first compartment and the internal face of the sheet of glass which is not in contact with the first compartment as shown in FIG. Figure 4 .
  • the compartments 12 and 17 are preferably made from a single section. It is understood that they can also come from the combination of several profiles of different shape and / or nature.
  • the second compartment 17 is placed towards the outside of the glazing and is not in direct contact with the glass sheets 10 and 11. Its thickness (B) is therefore less than the thickness (A) of the first. compartment 12. A minimum distance of 1 mm between the compartment and the glass sheets is preferable.
  • the second compartment 17 is at least in contact with the second peripheral seal 14 and preferably immersed in the second peripheral seal 14 and it allows at least one fixing means 18 passing through the second peripheral seal 14 to secure the glazing to the movable support of the frame 22.
  • the second compartment 17 is hollow.
  • the first compartment 12 implemented according to the invention can be hollow or full. It can be hexagonal. When the first compartment 12 is hollow then the load with the chambers of the multiple glazing must be balanced.
  • the first compartment 12 may in particular comprise a hollow transverse section which has for example the shape of a square. This section is partially open to the internal space 15 comprising the insulating gas. A desiccant material can then be placed inside the first compartment 12.
  • the first and second compartments 12 and 17 can be galvanized steel, aluminum, stainless steel, or composite profiles.
  • the vertical spacer 25 extending along the side edges of said at least two sheets of glass is formed from a transparent resin.
  • the customer or employee facing the refrigerated enclosure cabinet comprising at least two openings has the impression that the refrigerated enclosure cabinet is provided with only one glazed side and his view is not obstructed. by the presence of a frame or side rails, while the glazed element is made up of several panes.
  • the vertical spacer 25 placed on the lateral edges of the multiple glazing is formed from a transparent resin and, preferably, made from a material chosen from polymethylmetacrylate, polycarbonate, polystyrene, chlorinated polyvinyl PVC, acrylonitrile butadiene styrene (ABS), nylon or a mixture of these compounds.
  • the peripheral seal (27) extending along the lateral edges between the at least two sheets of glass and the vertical spacer 25 is formed from a transparent resin.
  • Such a gasket 27 is preferably made of a sealing material chosen from a double-sided acrylic, modified acrylic, rubber or silicone tape, also called double-sided adhesive tape "of the pressure sensitive adhesive (PSA) or transfer tape” type, or a transparent hot-melt adhesive (butyl) or a structural adhesive of acrylic, epoxy type, which may or may not be crosslinked under the action of UV.
  • a sealing material chosen from a double-sided acrylic, modified acrylic, rubber or silicone tape, also called double-sided adhesive tape "of the pressure sensitive adhesive (PSA) or transfer tape” type, or a transparent hot-melt adhesive (butyl) or a structural adhesive of acrylic, epoxy type, which may or may not be crosslinked under the action of UV.
  • a preferred variant consists of inserting a layer of primer between the peripheral seal 27 and the glass sheet 10 or 11.
  • the latter may have been previously coated with a low emissive layer (low E).
  • Another preferred variant consists of inserting a layer of primer between the peripheral seal 27 and the vertical spacer 25.
  • a most preferred variant consists in interposing a layer of primer between the peripheral seal 27 and the glass sheet 10 or 11 and another layer of primer between the peripheral seal 27 and the vertical spacer 25.
  • primer layer is intended to denote a layer of an organic product which adheres well to the peripheral seal and which has selective adhesive properties with respect to the glass or the transparent resin from which the spacer is produced.
  • examples of such primer are compounds of the silane family and of the acrylic family.
  • good adhesion is understood to mean an adhesion which requires a positive pull-out force and is characterized by a cohesive rupture in the test described in Example 2 below.
  • a second peripheral seal 28 can be positioned at the level of the external part of the vertical spacer 25 as shown in f igure 3b and filling the space between the internal faces of the sheets. of glass. It is then preferably made in a transparent resin.
  • a seal is preferably made of a sealing material which is an adhesive comprising silicone, hybrid sealant comprising silicone and polyurethane, hot melt or a mixture of these different compounds.
  • a desiccant material can be placed inside the multiple glazing. It can be placed inside the first compartment 12 or at different places in the glazing, for example in the movable support of the frame.
  • the desiccant is incorporated into the first compartment 12.
  • This first compartment 12 is then provided with orifices (slots or holes) so that the desiccant material either in communication with the air or the internal gas.
  • This is usually molecular sieve, sometimes silica gel.
  • the absorption capacity of these desiccants is greater than 20% of their weight.
  • the first 13 and the second peripheral gaskets 14 may comprise sealing layers of polyisobutylene arranged respectively between the compartment 12 and each of the first and second sheets of glass 10, 11.
  • the second peripheral seal 14 may also include a bead of polysulphide or silicone resin placed in contact with the sealing layers 13 between each of the glass sheets 10, 11 and the first compartment 12.
  • the second peripheral seal 14 is a mastic with a structuring function, chosen from silicone, polyurethane (PU), modified silicone (MS-Polymer).
  • a screen print 16 can be affixed to the horizontal edges of the glass sheet 11 on its internal face in order to perfect the aesthetic appearance of the glazed element by masking the horizontal spacer 26, the joints 13 and 14 and the means of fixing 18.
  • a structural reinforcement profile 20 can be inserted into the second peripheral seal 14 as shown for example in figure 6 .
  • the reinforcing profile 20 is immersed in the second peripheral seal 14 so as to stiffen the glazing.
  • the reinforcement profile 20 is in particular crossed by at least one fixing means 18 making it possible to fix the glazing to the movable frame.
  • This profile contributes to the mechanical rigidity of the glazing. It can be made of steel, stainless steel or plastic reinforcement.
  • the reinforcing profile 20 has the shape of a U, but it is understood that it can be of a different shape such as an L or any other shape making it possible to stiffen the whole of the glazed element.
  • the internal space 15 comprises a plate of an insulating gas comprising at least 85% argon or any other inert gas capable of optimally insulating the glazing.
  • Suitable gases should be colorless, non-toxic, non-corrosive, non-flammable, insensitive to exposure to ultraviolet radiation, denser than air, and exhibiting lower thermal conductivity.
  • Argon (Ar), xenon (Xe) and krypton (Kr) are examples of such gases which are commonly substituted for air in insulating glazing panels. It is also understood that the internal space 15 can be filled with air.
  • the inventors propose a multiple glazing which can be used in a glazed element capable of serving as a door, opening for refrigerated enclosure cabinet without requiring the presence of a movable support extending over the entire periphery of the glazing.
  • the glass sheets 10 and 11 can be sheets of glass of the simple soda-lime type, tempered glasses or even laminated glasses, extra white glasses to improve light transmission. , glasses tinted or not in the mass, for the aesthetic aspect, glasses on which can be deposited a film scratch resistant or hydrophobic. Moreover, more and more functions are added to these glazing units by depositing on their surface thin layers intended to give them a particular property depending on the intended application.
  • the glass sheets can be covered on their outer and / or inner faces with one or more layers chosen from the following list: an anti-fog layer, an antibacterial layer, a hydrophobic layer in order to avoid the stagnation of the glass.
  • condensation water or an easy-to-clean layer a semi-reflective or reflective layer, a low emissive layer or a pyrolytic layer.
  • layers with an optical function such as the so-called anti-reflection layers composed of a stack of layers alternately with high and low refractive indices.
  • anti-static function or a heating function of the anti-frost type
  • thin electrically conductive layers for example based on metal or on doped metal oxide.
  • a thermal, low-emissivity or anti-solar function for example, one can turn to thin metal layers of the silver type or based on nitride or metal oxide.
  • the insulating performance of the glazing has been increased thanks in particular to the use of double or even triple glazing to form the glazed parts of the refrigeration cabinet but also the presence of low-emissivity layers on at least one of the faces of the glass sheets included in the glazing, of thin layers reflecting infrared radiation or the use of triple glazing, one of the gas plates of which may be Krypton. It is also possible to heat at least the faces of the glazing.
  • the insulating glazing 100 is thus implemented to manufacture a glazed element 200 as shown in figures 7 to 10 .
  • the intermediate frame is fixed inside the insulating glazing by its side faces to the internal faces of the glass sheets by butyl rubber which has the role of to seal the inside of the glazing against water vapor.
  • the intermediate frame is set back inside the glazing and close to the edges of said sheets of glass, so as to provide a groove device into which the sealing means of the mastic type are injected, such as a polysulphide, silicone or polyurethane.
  • the mastic confirms the mechanical assembly of the two sheets of glass and ensures the seal against liquid water and solvents.
  • This intermediate frame and the sealing means are not aesthetic and are generally masked by an outer frame in which the glazing rests. However, this visible frame represents a visual barrier, a brake on access to the goods contained in the refrigerated cabinet. In addition to its structural role, it must generally be a weak conductor.
  • the fixed and mobile supports are composed of horizontal and vertical edges. This configuration makes it possible to support the insulating glazing but also to contribute to the thermal insulation.
  • the frames are generally made of different materials such as wood, PVC (polyvinyl chloride), aluminum or even composite materials.
  • the frame can also be transparent in order to let more light pass.
  • the frame can be made of any plastic material such as PMMA or any transparent resinous material which ensures a light transmission greater than 10% through the whole of a section of the frame.
  • the invention therefore proposes a glazed element 200 comprising at least one multiple glazing 100 supported by at least one frame of which the movable support 22 or opening frame, also called the opening, does not have side rails.
  • the structure of the glazing used for the glazed parts and in particular the openings of the refrigerated enclosure cabinet according to the invention has the advantage of imparting rigidity and strength equivalent to that of a single glazing even if said glazing has no support. movable over the entire periphery of the glazing or more particularly vertical cross members while ensuring good thermal insulation. Thus, the size is greatly reduced, thus offering greater visibility of the contents of the refrigerated cabinet.
  • the glazing 100 has a heat transfer coefficient Ug value ranging from 0.3 to 1.8, preferably from 0.6 to 1.8 and so more preferred 1.0 to 1.8 W / m 2 .
  • the term “heat transfer coefficient Ug” is understood to mean the quantity of heat passing through the glazing, in steady state, per unit area, for a difference of one degree Celsius between the environments, for example exterior and interior. These Ug values are achieved in particular thanks to a low-emissivity layer (low-E layer).
  • the glass sheets used can be glass sheets of the Thermobel, TopN or TopN + T type from AGC. The glass sheet can thus be covered with thin layers of metal of the silver type or based on nitride or metal oxide.
  • the glazing used 100 has a very efficient Ug coefficient while having aesthetic qualities.
  • the invention relates more particularly to a refrigerated enclosure cabinet in which fresh, refrigerated or frozen products are displayed, the common name of which is “refrigerated sales cabinet”. It is understood that the invention is not limited to this type of cabinet, any enclosure cabinet with a hot atmosphere, humid or not, also falls within the scope of the invention.
  • a further subject of the invention is a refrigerated enclosure cabinet which overcomes the various drawbacks of the prior art, and which meets the criteria. sealing of this type of furniture and offering a piece of furniture that is easy to use and economically advantageous, whether for the manufacture of new furniture or for improving the performance of a piece of furniture already in service.
  • the refrigerated enclosure cabinet according to the invention has the advantage of providing the customer with increased visibility of its contents since the openings have no movable support on the lateral edges of the glazing panel, while ensuring good thermal insulation.
  • the glazed element for making such a refrigerated cabinet is described above and is shown by way of example by the figures 7 to 10 .
  • the sealing between the two openings is achieved by means of a transparent sealing element 31 fixed to the glazing.
  • Sealing is for example provided on the side edges without a side cross member by a transparent lip or coil seal or of the brush or felt type on the lower and upper edges of the glazing.
  • the insulating glazing is provided on at least one of its edges with a transparent sealing element such as a glued section, in particular made of plastic.
  • profile is understood to mean all types of prefabricated profiles having a shape adapted to the function of said profile.
  • the profile is a plastic profile in order to be able to match the deformation of the glazing without significant constraints.
  • Such a profile bonded to at least one of the edges of the glazing can fulfill various functions such as protecting the edges of the glazing, fixing various elements such as hinges or handles or even the aesthetics of the opening.
  • the use of a profile is advantageous for making magnetic contacts between the opening and the cabinet and / or the neighboring opening.
  • the vertical elements for receiving the side edges of the at least two openings are eliminated, the side edges being those which are not fixed along the edges to the walls of the cabinet.
  • the vertical elements were those on which the opening came into abutment so that the sealing and blocking of the opening were ensured.
  • the absence of vertical elements makes it possible to simplify the structure of the furniture while improving its aesthetics.
  • said sealing element placed on the lateral edges of the glazing is a transparent lip or coil seal which has the advantage of not creating stresses and resistance at the level of the glazing. and not to create a risk of rupture of the seal over the entire length.
  • the lower and upper corners of the glazing are equipped with an element capable of receiving a magnetic part in order to ensure contact with the piece of furniture and / or the edge of the neighboring opening.
  • an element capable of receiving a magnetic part in order to ensure contact with the piece of furniture and / or the edge of the neighboring opening.
  • the seal between the opening and the upper and lower edges of the cabinet is produced by means of compressible magnetic seals arranged on said edges of the cabinet so that contact is made. on the periphery of the opening.
  • the internal surface of the opening is lightened and the compressible magnetic seal allows a hermetic contact which absorbs the small deformation which can appear on this contact length.
  • this contact length being shorter than that at the lateral ends of the cabinet, the deformation deflection is much smaller and the contact can be made on the periphery of the opening without risk of rupture of the seal.
  • the articulation axis is eccentric with respect to the plane of said opening and the articulation element is fixed on the opening, in particular on the mobile support located on the horizontal edges of the opening. glazing.
  • the insulating glazing has glass sheets of different sizes over the entire periphery of the glazing.
  • the asymmetry of the two sheets of glass facilitates the mechanical assembly of the movable support of the frame on the lower and upper edges of a multiple glazing and in particular of the double glazing included in the opening.
  • the opening is provided with a return element of the connecting rod-spring type.
  • a return element of the connecting rod-spring type is particularly advantageous from an aesthetic point of view.
  • it makes it possible to eliminate the use of the torsion bars usually used, these bars generally being arranged in the frame due to their not insignificant volume.
  • a movable support of the frame 22 is positioned on the lower and upper edges of the multiple glazing in order to be able to maintain and fix the opening to the fixed part 21, that is to say the fixed support for the opening of the refrigerated cabinet. It is for example in the form of an L-shaped or U-shaped profile which extends over part or all of the lower and / or upper edges of the at least one insulating glazing.
  • the movable support 22 can be made of aluminum, PVC, steel, stainless steel or even any material capable of fulfilling this function of maintaining and fixing the glazing to the fixed part. As specified for the frame, the movable support 22 can also be transparent and produced in the transparent materials described for the frame. The heat losses through the movable support 22 must be minimal in order to limit or avoid the increase in the coefficient Uw. Thanks to the mobile supports, the transfer of the mechanical load by the glass takes place between the lower and upper parts of multiple glazing. Such a mobile support is shown in the figures 2 , 4 to 6 .
  • movable supports 22 on at least part of the horizontal edges of the multiple glazing allows the integration of at least part of the mechanism intended to allow the opening and closing of the openings, and in particular the fixing of two, three or even four fulcrum or pivot points 19 as shown by figure 5 , which are mainly anchor points for the opening and closing movements of the sashes.
  • the mechanism intended to allow the opening and closing of the openings is according to a particular embodiment of the invention composed of several parts which make it possible to connect the opening to the refrigerated enclosure cabinet and more particularly to connect it to the level of the support. fixed 21.
  • the fixed support may be the frame of the cabinet of the refrigerated enclosure.
  • a closing damping stop system and / or keeping the opening in the open position can be placed on or in at least one of the mobile supports 22.
  • a desiccant material can be integrated into at least one of the mobile supports.
  • At least one of the mobile supports can comprise a sealing barrier abutting the door when it is in the closed position.
  • the sealing barrier can in particular be a lip, brush or felt coil seal.
  • the refrigerated cabinet is able to receive the fixed support of the glazed element according to the invention.
  • the term “fixed support” is understood to mean the part of the frame 21 which is fixed to the cabinet of the refrigerated enclosure and which will support the opening as well when it is is in open than closed position.
  • the fixed support or fixed frame can be made of aluminum, PVC, steel or even wood.
  • the fixed frame will in particular include a part of the mechanism intended to allow the opening and closing of the sashes, the other part being fixed to the sash and according to a particular embodiment of the invention, to the other part of the opening and closing mechanism of the leaf placed on at least one of the two beams.
  • the fixed fixed frame can include 2, 3 or 4 support or pivot points, the electric or pneumatic movement control mechanism of the screw jack type with or without rods.
  • the fixed frame support may in particular comprise a stop for damping closing and keeping the opening in the open position.
  • a sealing barrier is placed around the periphery of the fixed frame.
  • Such a barrier may be of the lip, brush or felt flange seal type in abutment of the door in the closed position.
  • the opening of the doors of the refrigerated cabinet can be done in different ways.
  • the doors can be opened by simply pivoting from the inside to the outside.
  • the sashes can also be opened by sliding the sashes from right to left or from left to right by horizontal translation with or without overlap of one of the sashes on the other.
  • the doors can also open like an accordion.
  • the opening and closing of the movable part of the glazed element 200 according to the invention is preferably automated, that is to say managed by means of an electrical system.
  • the refrigerated enclosure cabinet can be equipped with an interior lighting system with multiple glazing.
  • the lighting can be done in particular by means of LEDs arranged on at least one of the lower or upper edges of the glazing, a light can also be projected into the field of the glass panel (s) constituting the multiple glazing.
  • Video or fixed advertising screens can be integrated inside the multiple glazing and in particular the double or triple glazing. Electrically or mechanically controlled blinds can be added to the refrigerated cabinet.
  • This type of refrigerated cabinet unit thus described is easy to produce and install because it does not require a lot of parts. It provides undeniable thermal insulation as well as very good sealing while being aesthetic.
  • figures 7 to 10 represent a glazed element 200 according to the invention. More particularly, the figure 7 shows a glazed element comprising 4 insulating double glazing 100, respectively from 1 to 4 from left to right.
  • each glazed element is articulated separately and on one of its edges via pivot elements 19 connecting the fixed support 21 and the movable support 22 of the frame. The openings then open from the inside to the outside.
  • the glazed elements are coupled in pairs to open like an accordion.
  • each glazed element 200 has hinge elements on both sides.
  • the pivot element 19 connects the fixed support 21 and the movable support 22 of the frame.
  • the pivot element connects the movable supports 22 of two adjacent glazed elements (No. 1 and No. 2) and (No. 3 and No. 4).
  • the pivot on the fixed support side 22 is fixed.
  • the pivot on the fixed support side is sliding to allow the accordion opening.
  • Glazing 1 and 4 comprise two asymmetrical tempered glass sheets of the soda-lime type, while glazing No. 2 and No. 3 comprise two tempered glass sheets of identical sizes.
  • the glass sheets are covered on their internal face with a low-emissivity layer of the Top N + T type from AGC.
  • the internal space between the 2 sheets of glass includes argon as an insulating gas.
  • the opening of the doors can be automated.
  • the sealing between the insulating glazing between them and between the glazing and the fixed support is ensured by transparent bead gaskets.
  • the vertical part 25 of the intermediate frame 50 separating the two glass sheets of each glazing 100 is a transparent polycarbonate spacer glued to the glass sheets by means of a peripheral seal 27 which is a transparent double-sided adhesive tape of the PSA type. .
  • the gas-tightness between the glass sheets can be ensured by a transparent silicone adhesive 28 for the vertical parts and is ensured by a mastic having a structural function 14 for the horizontal parts.
  • the compartment 12 of the horizontal spacer 26 of the intermediate frame 50 placed on the upper and lower edges of the insulating glazing units 100 is an aluminum spacer comprising a molecular sieve such as a silica gel.
  • a screen printing 16 is placed on the horizontal edges of the insulating glazing 100.
  • the refrigerated enclosure cabinet according to the invention also makes it possible to improve the exterior aesthetics of these cabinets.
  • the face of the cabinet comprising the openings can be made almost exclusively in glass due to the absence of vertical frame uprights and it is possible to provide a small space between the openings for the opening and closing of the cabinet. furniture without obstructing the visibility of the contents of the interior of such furniture.
  • the refrigerated enclosure cabinet according to the invention makes it possible to meet the sealing criteria required for these types of cabinets, is easy to produce and this without increasing, or even decreasing, its cost price.
  • the glazed element 100 according to the invention can be mounted on refrigerated enclosure units already in service in order to improve their thermal insulation performance and to improve visual access to the contents.
  • the invention is not limited to this particular type of embodiment and must be interpreted in a nonlimiting manner and encompassing any type of refrigerated enclosure cabinet comprising at least one opening comprising at least one insulating glazing composed of at least a first and a second sheet of glass.
  • the insulating glazing can comprise several internal spaces each comprising a layer of an insulating gas (eg triple glazing)
  • the glass sheets of the insulating glazing panels according to the invention can be made of any type of glass, may be surface textured, may include any type of coating intended to perform any function, or may themselves consist of glazing panels laminated by means of plastic spacers.
  • a glazed element according to the invention can be implemented in any type of application such as the doors of refrigerated cabinets, freezers, bay windows (eg verandas, roof elements, etc.).
  • the amount of water absorbed by the desiccant material located in the spacer (s) of the multiple glazing is measured. This measurement is carried out according to the method described in standard EN1279-2 in appendices B or C. The results are expressed by the moisture penetration index I (in% of the quantity of desiccant consumed).
  • the insulating glazing 100 consists of two sheets of soda-silica-calcium glass 10 and 11 lapped 4 mm thick and with dimensions 1600 mm x 600 mm, an intermediate frame 50 which includes two transparent vertical spacers in PMMA 25 (length 1600 mm) and two horizontal spacers from Technoform Glass Insulation® (TGI), length 600 mm.
  • Each transparent PMMA 25 spacer has a thickness of 12 mm and a height of 10 mm. At each end, a 6.0 mm diameter hole is drilled in the direction normal to the thickness of the spacer and at an equidistant distance from each edge of the spacer, in order to secure the transparent spacer to the horizontal spacer.
  • a transparent type 3M® VHB tape is deposited on each face of the transparent spacers 25, in contact with the glass sheets 10 and 11.
  • Each horizontal spacer is composed of a section comprising two compartments 12 and 17, separate and contiguous.
  • the compartment 12 is hollow and has a dimension of a length of 580 mm, a thickness of 15 mm.
  • Compartment 12 is filled with desiccant and each end is plugged with a butyl tablet.
  • the sides of compartment 12 are also butylated.
  • the compartment 17 is also hollow and has a thickness of 8 mm, a height of 7 mm and a length equal to the length of the compartment 12.
  • the vertical 25 and horizontal 26 spacers are secured by four screws 24. Each screw 24 comes s' insert into compartment 17 via the holes drilled in the transparent spacers 25.
  • the vertical edges of each glass sheet 10 and 11 are coated with a transparent 3M® primer.
  • the interlayer frame is pressed onto the glass sheet 10.
  • the second glass sheet 11 is deposited on the other face of the frame and pressed automatically by a vertical gas pressing system.
  • an insulating gas argon type, is inserted into the insulating glazing in a proportion of 90% to 98%. Any bubbling phenomenon at the tape / glass sheet interface 10 and 11 is to be avoided.
  • the horizontal edges of the insulating glazing are glued with adhesive 14 of the DC 3362 silicone type. This glue sticks to the compartment 17.
  • the moisture-tightness of the glazing of the glazed element according to the invention measured by the index I as described above is typically less than 20%.
  • the argon gas tightness is less than 12% / year.
  • a test specimen was packaged with two sheets of glass, one of which is coated with a low-emissive layer, glued onto a double-sided tape (stacking: glass / layer lowe / primer / double-sided tape / primer / glass) in a controlled hot and humid atmosphere for a determined period of time after which the force necessary to completely separate the two sheets by tearing was measured.
  • the same stack in which the primer layers were omitted was used as a reference for the comparison.
  • test specimen was produced from two rectangular plates of silico-soda-lime float glass 4 mm thick and of dimensions 65 mm ⁇ 25 mm.
  • One of the two glasses has previously been coated with a TopN + T low-emissive coating.
  • the double-sided tape used is the tape manufactured by the company 3M of the 3M® VHB brand of transparent type.
  • the transparent primer belongs to the silane family and also comes from the company 3M.
  • the glass surfaces to be bonded were first cleaned by means of isopropanol, then the primer was applied under an atmosphere of 25 ° C. and 50% RH. The primer was allowed to dry 2 to 3 minutes before applying a 25 x 10 mm strip of tape transversely to one of the glass sheets so as to cover the entire width of the sheet in the central position thereof while avoiding carefully forming and trapping any air bubbles between the tape and the glass sheet.
  • the second sheet of glass was then coated with the same primer and glued in its position center on the other side of the tape already glued to the first sheet of glass so that the sheets of glass form an angle of 90 ° between them.
  • a reference test piece was also produced in a manner similar to the first, but omitting to apply a primer.
  • test pieces were then stored for 336 hours in a chamber with a controlled atmosphere of 70 ° C and 100% RH.
  • test pieces were then subjected to a mechanical test consisting in putting in traction the two sheets of glass of each test piece.
  • the traction is exerted in a direction perpendicular to the surface of each of the 2 sheets of glass under an atmosphere of 25 ° C. and 50% RH.
  • the tensile force required to be applied to the glass sheets was measured to cause the tearing and complete separation of the two sheets.
  • the same test was also applied to specimens which had not been conditioned beforehand at 70 ° C and 100% RH.
  • the rupture was of the cohesive type inside the material of the tape, except in the case of the sample without primer.
  • the latter reveals a phenomenon of delamination of the adhesive from the packaging phase and gave rise to an adhesive rupture at the glass interface coated with the low-e / tape layer.
  • Only the cohesive rupture inside the tape reflects good quality attachment, the tensile force necessary for tearing out making it possible to classify the stacks after aging according to their respective quality, the best stacks requiring a greater tearing force.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Refrigerator Housings (AREA)
  • Joining Of Glass To Other Materials (AREA)
EP15705978.3A 2014-03-07 2015-02-18 Elément vitré isolant Active EP3113653B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15705978T PL3113653T3 (pl) 2014-03-07 2015-02-18 Izolujący element oszklony

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14158278.3A EP2915460A1 (fr) 2014-03-07 2014-03-07 Elément vitré pour meuble d'enceinte réfrigérée
EP14188477 2014-10-10
PCT/EP2015/053370 WO2015132071A1 (fr) 2014-03-07 2015-02-18 Elément vitré isolant

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EP3113653B1 true EP3113653B1 (fr) 2021-04-14

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JP (1) JP6611361B2 (ja)
CN (1) CN106061329B (ja)
BR (1) BR112016019713B1 (ja)
DE (1) DE202015009499U1 (ja)
ES (1) ES2877352T3 (ja)
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EP3699383B1 (fr) * 2015-09-03 2023-03-29 AGC Glass Europe Porte de meuble d'enceinte réfrigérée
JP2017142051A (ja) * 2016-02-09 2017-08-17 旭硝子株式会社 保冷ショーケース用ガラスドア、及び保冷ショーケース
CN109690010A (zh) 2016-09-16 2019-04-26 美国陶氏有机硅公司 包含具有烷氧基官能化硅氧烷反应性树脂的可湿固化的热熔硅树脂粘合剂组合物以及结构窗用玻璃
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US10400504B2 (en) 2019-09-03
CN106061329B (zh) 2020-08-21
CN106061329A (zh) 2016-10-26
EP3113653A1 (fr) 2017-01-11
BR112016019713B1 (pt) 2022-01-18
WO2015132071A1 (fr) 2015-09-11
JP6611361B2 (ja) 2019-11-27
JP2017515082A (ja) 2017-06-08
DE202015009499U1 (de) 2018-01-02
ES2877352T3 (es) 2021-11-16
BR112016019713A2 (ja) 2017-10-03
PL3113653T3 (pl) 2021-10-25
US20170016271A1 (en) 2017-01-19

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