WO2023010149A1 - Dispositif de raccordement d'éléments conducteurs de fluide - Google Patents

Dispositif de raccordement d'éléments conducteurs de fluide Download PDF

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Publication number
WO2023010149A1
WO2023010149A1 PCT/AT2022/060277 AT2022060277W WO2023010149A1 WO 2023010149 A1 WO2023010149 A1 WO 2023010149A1 AT 2022060277 W AT2022060277 W AT 2022060277W WO 2023010149 A1 WO2023010149 A1 WO 2023010149A1
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WO
WIPO (PCT)
Prior art keywords
fluid
layer
diffusion barrier
line system
barrier layer
Prior art date
Application number
PCT/AT2022/060277
Other languages
German (de)
English (en)
Inventor
Janos Kertesz
Original Assignee
Henn Gmbh & Co Kg.
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 Henn Gmbh & Co Kg. filed Critical Henn Gmbh & Co Kg.
Publication of WO2023010149A1 publication Critical patent/WO2023010149A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
    • F16L33/2076—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer

Definitions

  • the invention relates to a device for connecting a fluid-carrying pipe to a further fluid-carrying element, in particular a further fluid-carrying pipe, to a device body.
  • the invention further relates to a fluid line system comprising at least one fluid-carrying pipe, at least one additional fluid-carrying element and at least one device for connecting the fluid-carrying pipe to the additional fluid-carrying element.
  • Pipes made of a composite material with a diffusion barrier are often used for this purpose.
  • the diffusion barrier can be an aluminum layer, for example.
  • pipes made of composite materials for water transport with polymeric oxygen barriers For example, EP 0 030 091 A2 describes a gas diffusion-resistant pipe comprising a core made of a liquid-resistant plastic material and an outer layer made of an impact-resistant plastic material, and an intermediate layer made of a gas diffusion-resistant plastic material, which is arranged between the core and the outer layer and connected thereto.
  • the present invention is based on the object of specifying a more cost-effective method for connecting fluid-carrying line elements to one another.
  • the object of the invention is achieved with the device mentioned at the outset for connecting a fluid-carrying pipe to another fluid-carrying element, in which the device body comprises or consists of a multi-layer composite material, the composite material having a polymeric inner layer, a polymeric outer layer and a polymeric diffusion barrier layer which disposed between the inner layer and the outer layer. Furthermore, the object of the invention is achieved with the fluid line system mentioned at the outset, which has the device for connecting a fluid-carrying pipe to another fluid-carrying element.
  • the advantage here is that—in addition to the cost reduction—a line system can be made available that does not have any material changes over time.
  • the components of the line system are also subject to the same stresses caused by temperature changes with the same temperature influences.
  • the device which can also be referred to as a fitting, more easily in the installation of fluid line systems, since it is no longer necessary to pay attention to material incompatibilities if the material composition is the same as the material composition of the pipes.
  • an adhesive layer is arranged between the inner layer and the diffusion barrier layer and/or between the outer layer and the diffusion barrier layer. Not only can the cohesion of the composite material itself be improved, but it is also possible to use polymers that are inherently difficult to process with one another for the device.
  • the outer layer has particles and/or fibers.
  • the outer layer can thus be reinforced in a simple manner in order to give the device greater mechanical resistance.
  • the fibers form a fabric, with which the thermal expansion of the outer layer can be influenced, so that the thermal expansions of the different polymers of the layers of the device can be better matched to one another.
  • the inner layer has or consists of at least one polymer from the group of polyolefins, preferably polyethylene, in particular crosslinked polyethylene, HDPE, polypropylene, polybutylene, polyolefin copolymers, a polyester, in particular polyethylene phthalate, partially aromatic polyamide, polyphenylene ether, and/or -
  • the outer layer is at least one polymer from the group of polyamide, in particular PA 6, PA 66, PA 11, PA 12, PA 610, PA 612, polyphthalamide, polypropylene, polyoxymethylene, polyphenylene sulfone, polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer, polyethy - has or consists of len-2,6-naphthalate, polyacrylonitrile, polystyrene, polyvinyl chloride, polyolefins, in particular polyethylene, polypropylene, polybutylene, and/or
  • the diffusion barrier layer comprises or consists of at least one polymer from the group of ethylene-vinyl alcohol copolymer, partially aromatic polyamide, fluoroplastic, in particular polyvinylidene difluoride, polyvinylidene dichloride, and/or
  • the adhesive layer is at least one polymer from the group of ionomers, for example an ionomeric copolymer of ethylene and an ⁇ , ⁇ -unsaturated carboxylic acid or a carboxylic acid anhydride, in particular a (co)polymer of ethylene and methacrylic acid, an EVA copolymer, maleic anhydride, grafted Polyolefin, ethylene glycidyl methacrylate, ethylene - methyl acrylate - glycidyl methacrylate terpolymer, has or consists of it.
  • ionomers for example an ionomeric copolymer of ethylene and an ⁇ , ⁇ -unsaturated carboxylic acid or a carboxylic acid anhydride, in particular a (co)polymer of ethylene and methacrylic acid, an EVA copolymer, maleic anhydride, grafted Polyolefin, ethylene glycidyl methacrylate,
  • the device With the polymers of the inner layer, the device can be better adapted to different fluids to be pumped.
  • the polymers of the outer layer can provide improved mechanical strength to the device.
  • the device With the polymers of the diffusion barrier layer, the device can be given reduced permeability to gases, such as oxygen, or vapors, such as water vapor or hydrocarbon vapors.
  • the polymers for the adhesive layer can improve the structural strength of the device.
  • the device can exhibit reduced diffusion of substances from the outside in or from the inside out.
  • the inner layer is multi-layered, and/or
  • the outer layer is multi-layered, and/or
  • the diffusion barrier layer is formed in multiple layers, and / or
  • the adhesive layer is formed in several layers. For example, due to the increase in the number of interfaces, the diffusion of substances through the device body can be (further) reduced, which means that polymer materials can also be used in the device, which appear less suitable for this task. Likewise, with the multi-layer outer layer, an improvement in the mechanical load-bearing capacity, in particular an increase in the puncture resistance, can be achieved. With the multilayer adhesive layer, a better transition between two plastics that cannot be connected to one another or can only be connected with difficulty can be achieved by using, for example, different adhesion promoters for the multiple layers of the adhesive layer.
  • the device body is an injection molded part. Improved series production of the device with a high cycle time can thus be achieved, in particular also for devices that are not straight, such as bends, Y-pieces, etc.
  • the inner layer at least partially covers the device body at the front, whereby an improved connection to the other fluid-carrying elements of the fluid line system can be achieved.
  • the adhesive layer between the inner layer and the diffusion barrier layer and optionally the diffusion barrier layer to at least partially cover the device body on the front side.
  • the adhesive layer between the inner layer and the diffusion barrier layer and optionally the diffusion barrier layer to at least partially cover the device body on the front side.
  • the device body has at least one flange in order to improve the contact with the further element of the fluid line system, such as the pipe, for example.
  • the flange can also be provided in such a way that the flange is designed to accommodate a compression sleeve, so that according to one embodiment ment variant of the fluid line system, the fluid-carrying pipe can be connected to the device for connecting the fluid-carrying pipe to the further fluid-carrying element more easily with a compression sleeve.
  • the invention further includes the use of the device according to the invention or the fluid line system according to the invention in:
  • a fluid circuit of a vehicle in particular a motor vehicle
  • a water pipe in particular a drinking water pipe
  • FIG. 1 shows a section of a section of a fluid line system with a device for connecting a fluid-carrying pipe to a further fluid-carrying element, in a side view;
  • FIG. 2 shows a detail of the device for connecting a fluid-carrying pipe to a further fluid-carrying element in a side view
  • FIG. 3 shows an embodiment variant of a device for connecting a fluid-carrying pipe to a further fluid-carrying element in section in a side view
  • FIG. 4 shows a section of a detail from an embodiment variant of the fluid line system with an embodiment variant of the device for connecting a fluid-carrying pipe to a further fluid-carrying element, in a side view;
  • 5 shows a further embodiment variant of a device for connecting a fluid-carrying pipe to a further fluid-carrying element in section in a side view;
  • FIG. 6 shows a detail of the device according to FIG. 5 for connecting a fluid-carrying pipe to a further fluid-carrying element in a side view;
  • FIG. 7 shows a detail of the device for connecting a fluid-carrying pipe to another fluid-carrying element in a side view in section with a multilayer diffusion barrier layer.
  • polymer or “plastic” within the meaning of the invention mean a material that consists of macromolecules or in which macromolecules form the matrix for other ingredients.
  • the macromolecules themselves are molecules formed from synthetic and/or natural monomers. If appropriate, dimers can also be polymers within the meaning of the description.
  • the fluid line system 1 shows a longitudinal section of a detail from an embodiment variant of a fluid line system 1 .
  • the fluid line system 1 comprises a first fluid-carrying pipe 2 and a second fluid-carrying pipe 3.
  • the two fluid-carrying pipes 2, 3 are connected to one another (in a fluid-tight manner) with a device 4 for connecting fluid-carrying elements. Although two pipes 2, 3 are shown in FIG.
  • the device 4 for connecting fluid-carrying elements can also connect at least one other fluid-carrying element to the pipe 2 or 3 or generally other than connect tubular fluid-carrying elements to one another, such as a fluid conveying device with a pipe 2 or 3, a fluid connection, such as a water tap or generally a valve with the fluid line system 1, etc.
  • the fluid line system 1 can be used to convey or convey liquid or gaseous fluids, such as water, e.g. drinking water, heating water or hot water, foodstuffs, compressed air, hydrocarbons or petroleum derivatives, chemical (raw) materials, etc. This can be used Fluid line system 1 e.g. in cooling systems or air conditioning systems, heating systems such as underfloor heating, in irrigation systems, etc.
  • liquid or gaseous fluids such as water, e.g. drinking water, heating water or hot water, foodstuffs, compressed air, hydrocarbons or petroleum derivatives, chemical (raw) materials, etc.
  • Fluid line system 1 e.g. in cooling systems or air conditioning systems, heating systems such as underfloor heating, in irrigation systems, etc.
  • the two pipes 2, 3 are made in particular from a composite material, comprising a (polymeric) inner layer 5, a (polymeric) barrier layer 6, and a (polymeric) outer layer 7, or consisting of these layers.
  • a composite material comprising a (polymeric) inner layer 5, a (polymeric) barrier layer 6, and a (polymeric) outer layer 7, or consisting of these layers.
  • Such multi-layer pipes are known from the prior art so that they do not need to be discussed further.
  • the device 4 is also multi-layered. It comprises a device body 8 which comprises or consists of a multi-layer composite material. As can also be seen from Fig. 2, the composite material comprises a polymeric inner layer 9, a polymeric outer layer 10 and a polymeric diffusion barrier layer 11. The diffusion barrier layer 11 is between the inner layer 9 and the outer layer 10 and is connected to the inner layer 9 and the Outer layer 10 connected.
  • connection between the layers of the device 4 can take place directly if the polymers or at least the polymer of the diffusion barrier layer 11 have/have sufficient adhesion to the other polymers.
  • a first adhesive layer 12 is arranged between the corresponding layers to create the connection between the inner layer 9 and the diffusion barrier layer 11, and a second adhesive layer 13 is arranged between the corresponding layers to connect the outer layer 10 to the diffusion barrier layer 11.
  • the inner layer 9 can be at least one polymer from the group of polyolefins, preferably polyethylene, in particular crosslinked polyethylene, HDPE (high density polyethylene) or crosslinked HDPE, or (crosslinked) UHDPE, polypropylene, polybutylene, polyolefin copolymers, a polyester, in particular polyethylene phthalate, partially aromatic polyamide , Polyphenylene ether, have or consist of.
  • polyolefins preferably polyethylene, in particular crosslinked polyethylene, HDPE (high density polyethylene) or crosslinked HDPE, or (crosslinked) UHDPE, polypropylene, polybutylene, polyolefin copolymers, a polyester, in particular polyethylene phthalate, partially aromatic polyamide , Polyphenylene ether, have or consist of.
  • the inner layer 9 can have a layer thickness 14 of between 0.1 mm and 4 mm.
  • the outer layer 10 can be at least one polymer from the group of polyamide, in particular PA 6, PA 66, PA 11, PA 12, PA 610, PA 612, polyphthalamide, polypropylene, polyoxymethylene, polyphenylene sulfone, polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer, Po - Have or consist of lyethylene-2,6-naphthalate, polyacrylonitrile, polystyrene, polyvinyl chloride, polyolefins, in particular polyethylene, polypropylene, polybutylene.
  • polyamide in particular PA 6, PA 66, PA 11, PA 12, PA 610, PA 612, polyphthalamide, polypropylene, polyoxymethylene, polyphenylene sulfone, polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer, Po - Have or consist of lyethylene-2,6-naphthalate, polyacryl
  • the outer layer 10 can have a layer thickness 15 of between 0.1 mm and 5 mm.
  • the diffusion barrier layer 11 can have or consist of at least one polymer from the group of ethylene-vinyl alcohol copolymer, partially aromatic polyamide, fluoroplastic, in particular polyvinylidene difluoride, polyvinylidene dichloride.
  • the diffusion barrier layer 11 can have a layer thickness 16 of between 0.1 mm and 2 mm.
  • the adhesive layer 12 and/or the adhesive layer 13 can be at least one polymer from the group of ionomers, for example an ionomeric copolymer of ethylene and an ⁇ , ⁇ -unsaturated carboxylic acid or a carboxylic acid anhydride, in particular a (co)polymer of ethylene and methacrylic acid, an EVA Copolymer, maleic anhydride, grafted polyolefins, ethylene glycidyl methacrylate, ethylene - methyl acrylate - glycidyl methacrylate terpolymer, have or consist of them.
  • ionomers for example an ionomeric copolymer of ethylene and an ⁇ , ⁇ -unsaturated carboxylic acid or a carboxylic acid anhydride, in particular a (co)polymer of ethylene and methacrylic acid, an EVA Copolymer, maleic anhydride, grafted polyolefins, ethylene
  • the adhesive layer 12 can have a layer thickness 17 of between 0.1 mm and 2 mm.
  • the adhesive layer 13 can have a layer thickness 18 of between 0.1 mm and 2 mm.
  • the device 4 With the polymers, composite materials can be provided for the device 4, which give the device body 8 a low weight. In addition, their installation (installation) in the fluid line system can also be simplified. Especially when using crosslinked polymers, such as crosslinked PE, the device 4 can be equipped with a “shape memory”, so that it returns to its original shape after reshaping to a predefinable extent when reheated. On the outside, the device 4 with the outer layer 10 can be given improved mechanical resistance, such as high abrasion resistance.
  • the composite material of the device body 8 can have the following structure:
  • Outer layer 10 polyamide 6
  • layer thickness 15 0.4 mm
  • Adhesive layer 13 grafted polyolefin, layer thickness 18: 0.4 mm
  • Diffusion barrier layer 11 ethylene-vinyl alcohol copolymer (EVOH), layer thickness 16: 0.4 mm
  • Adhesive layer 12 grafted polyolefin, layer thickness: 17 0.4 mm
  • Inner layer 9 HDPE (high density polyethylene), layer thickness 14: 0.4 mm
  • the devices 4 can have an oxygen permeability according to DIN 4729 of a maximum of 0.1 grams of oxygen per day per cubic meter of water content of the pipes at a water temperature of 40 ° C, in particular 0.05 grams of oxygen per day per cubic meter of water content of the pipes at a water temperature of 40 °C.
  • the outer layer 10 is particle and/or fiber reinforced.
  • particles and/or fibers 19 or threads can be contained or arranged at least partially, in particular entirely, within the layer.
  • the coefficient of thermal expansion of the layer provided with it can thus also be reduced, as a result of which the bond strength of the bond made from the different polymers can be positively influenced.
  • the particles can be of a mineral nature, such as calcium carbonate, quartz, kaolin, mica, etc. However, synthetic (ceramic) particles can also be used. Glass balls can also be used as particles.
  • the particles can have a particle size between 10 ⁇ m and 5000 ⁇ m.
  • the proportion of particles in the outer layer 10 can be between 0.1% by weight and 25% by weight.
  • the fibers 19 and/or threads can be glass fibers, carbon fibers, mineral fibers, in particular basalt fibers, natural fibers such as hemp fibers, plastic fibers, etc., and combinations thereof.
  • the fibers 19 can be used as short and/or long fibers. They can have a length between 1 mm and 15 mm (short fibers 1 mm to 5 mm, long fibers 5 mm to 15 mm). Furthermore, they can have a fiber diameter of between 0.01 mm and 2 mm.
  • the proportion of fibers 19 and/or threads in the outer layer 10 can be between 3% by weight and 65% by weight, in particular between 5% by weight and 45% by weight.
  • the fibers 19 and/or threads can be contained loosely or as a random layer, etc. According to a further embodiment variant of the device 4, the fibers 19 and/or threads can also be contained in the outer layer 10 as a woven or knitted fabric.
  • the fabric can be used with plain weave, twill weave or satin weave.
  • the inner layer 9 and/or at least one of the adhesive layers 12, 13 and/or the diffusion barrier layer 11 can be reinforced.
  • the explanations regarding the particles or fibers 19 and/or threads of the outer layer 10 can also be transferred or applied to these layers of the device body 8 .
  • the device 4 is produced by means of injection molding, in particular using a multi-component injection molding process, for example by overmolding or sandwich molding. It is possible that a pre-moulded part is produced with a first layer, and after the first injection molding process this is converted into a new tool cavity in which the next layer is applied, etc. However, a turning tool can also be used. After the first injection molding process, this tool is rotated or shifted into a new position and the preform is provided with the next layer in the new position, etc. It is also possible to produce the injection molded part of the device 4 using index plate technology. The molded part to be manufactured is positioned between the various cavities of the injection mold by the rotatably mounted index plate moved and so produced the individual layers of the device. Alternatively, a so-called cube tool can also be used.
  • the device 4 according to FIG. 1 is designed as a straight component. However, the device 4 can also have a different shape. In order to clarify this, arc-shaped devices 4 are shown in FIGS. 3 and 4, the arcs having different curvatures at 45 ° (FIG. 3) and 90 ° (FIG. 4). However, the device 4 can also be shaped differently, for example as a Y-piece or a T-piece, etc. The shapes of the device 4 shown in the figures are therefore in particular only exemplary, but can also represent an independent part of the invention .
  • the device 4 can have a length to diameter ratio between 4 and 10.
  • FIGS. 5 and 6 illustrate a further embodiment variant of the device 4 .
  • the device body 8 is only four-layered with the inner layer 9, the adhesive layer 12 connected thereto, the diffusion barrier layer 11 connected thereto and the outer layer 10 connected thereto. To avoid repetition, reference is made to the above statements on the individual layers.
  • the device body 8 can also be designed with only three layers or with more than five layers, for example six, seven, etc.
  • a lacquer layer can be applied to the outer layer 10, for example, as the sixth layer.
  • the device body 8 can therefore generally be described as multi-layered.
  • FIG. 4 A further variant embodiment of the device 4 is shown in FIG.
  • the inner layer 9 is extended to such an extent that it runs at an angle to the rest of the inner layer 9, in particular at an angle of 90°.
  • the layer structure can be protected on the face side, in particular if the inner layer 9 is formed in one piece, ie uninterrupted, with this section arranged on the face side.
  • the adhesive layer 12 can also be arranged raised at the end face in order to improve the adhesion of the inner layer 9 to the end faces of the other layers of the device body 8.
  • the adhesive layer 12 it is also possible for only the adhesive layer 12 to be arranged on the front side and/or for further layers of the device body 8 to be arranged on their own or with other layers of the device body 8 on the front side, in which case the unitary nature of the respective section with the respective layer of the device body 8 is preferred.
  • This embodiment variant with at least one layer of the device body 8 at least partially covering the end face 20 can also be applied to other openings or end faces of the device body 8, as can be seen, for example, in FIG.
  • the device 4 can be connected to a further fluid-carrying element, such as the tube 2 and/or the tube 3, for example by expanding under the action of heat and pushing the device 4 onto the further element with subsequent cooling.
  • a further fluid-carrying element such as the tube 2 and/or the tube 3
  • the device 4 it is also possible for the device 4 to be glued on the front side to the front side of the further element.
  • the device body 8 is produced with or has at least one flange 21 . It is thus possible to increase the area that is available for the material connection.
  • a rear side of the flange can also be made for a rear side of the flange to be rounded, with the outer layer 10 being able to be produced with a greater layer thickness in this area (compared to the remaining section of the device 4). It is thus possible to better design the flange to accommodate a compression sleeve 22, which is only indicated in FIG. 5 and can be seen, for example, in FIG.
  • the compression sleeve 22 can be designed in such a way that it has an inner section 23 and an outer section 24, so that the end of the tube 2 or 3 can be inserted between these sections 23, 24.
  • a transition area between these two sections 23, 24 can be formed with a bend 25 or angled. This transition area is intended to engage behind the flange 22 of the device 4, as can be seen, for example, in FIG. With this embodiment variant, it is possible to connect the fluid-carrying pipe with the connection device 4 to the compression sleeve 22 to form the fluid line system 1 .
  • the compression sleeve 22 can consist of a metal, for example.
  • the device body 8 in order to form the flange 21, the device body 8 as a whole, that is, with all the layers, can be deformed without making a single layer longer to enable the end covering of the composite material.
  • the device body 8 is designed to accommodate an (elastomeric) sealing element, for example a flat gasket or an O-ring.
  • This sealing element can be arranged on the end face or on an inner lateral surface or an outer lateral surface of the connecting body 8 .
  • an annular groove can be formed in the connecting body 8 .
  • the connection between the device 4 and the fluid-carrying pipe 2 or another fluid-carrying pipe 2 can also be designed as a pure plug-in connection, optionally with the interposition of a sleeve, in particular a sleeve similar in shape to the compression sleeve 22 .
  • the inner layer 9 and/or the diffusion layer 11 and/or the outer layer 10 and/or at least one of the adhesive layers 12, 13 is/are formed in multiple layers.
  • FIG. 7 a detail from the device body 8 is shown in FIG. 7 .
  • the four-layer device body 8 comprises the inner layer 9, the adhesion-promoting layer 12, a multilayer diffusion barrier layer 11, and the outer layer 10.
  • this embodiment variant can also be used for embodiment variants with one of four different numbers of layers.
  • only the diffusion barrier layer 11 is multi-layered.
  • At least one of the further layers of the device body 8 can alternatively or additionally be formed in multiple layers, so that the following statements on the multiple layers of the diffusion barrier layer 11 can also be applied to this at least one further layer.
  • the diffusion barrier layer 11 has three layers 26, 27 and 28 made of the same polymer. However, at least one of the layers can also consist of a different polymer, so that the diffusion barrier layer 11 can consist of different polymers.
  • the diffusion barrier layer 11 can have only two or more than three, for example four or five, layers.
  • all lengths 26 to 28 have the same thickness or that at least one of the layers 26 to 28 has a greater layer thickness than the remaining layers 26 to 28 .
  • the sum of the layer thicknesses of the layers is not greater than the aforementioned value for the layer thickness 16 of the diffusion barrier layer 11.
  • the sum of the layer thicknesses of the layers can also be greater than the aforementioned value for the layer thickness 16 of the diffusion barrier layer 11.
  • the exemplary embodiments show possible variants of the fluid line system 1 or of the device 4, it being noted at this point that combinations of the individual variants are also possible.

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Abstract

L'invention concerne un dispositif (4) permettant le raccordement d'un tuyau conducteur de fluide (2) à un autre élément conducteur de fluide, en particulier un autre tuyau conducteur de fluide (3), comprenant un corps de dispositif (8) qui comprend ou est constitué d'un matériau composite multicouche, le matériau composite ayant une couche de polymère interne (9), une couche de polymère externe (10) et une couche de polymère barrière de diffusion (11) disposée entre la couche interne (9) et la couche externe (10).
PCT/AT2022/060277 2021-08-05 2022-08-05 Dispositif de raccordement d'éléments conducteurs de fluide WO2023010149A1 (fr)

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AT506402021 2021-08-05
ATA50640/2021 2021-08-05

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WO2023010149A1 true WO2023010149A1 (fr) 2023-02-09

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030091A2 (fr) 1979-11-28 1981-06-10 Wirsbo Bruks Aktiebolag Article résistant à la diffusion gazeuse
DE10018324A1 (de) * 2000-04-13 2001-10-25 Gerhard Rosenberg Extrudiertes, spritzgegossenes oder blasgeformtes Rohr, Fitting oder Formstück aus Kunststoff zum Erstellen von Rohrleitungen für flüssige, pastöse und gasförmige Medien
WO2007019921A1 (fr) * 2005-08-19 2007-02-22 Veritas Ag Corps creux dote d'une double couche barriere
DE202010007084U1 (de) * 2010-05-21 2011-09-26 Rehau Ag + Co. Mehrschichtiges Rohr
EP2677220A1 (fr) * 2012-06-20 2013-12-25 TI Automotive Engineering Centre (Heidelberg) GmbH Tuyau pour le transport d'un réfrigérant d'un système de conditionnement d'air et système de tuyau
WO2018167158A1 (fr) * 2017-03-15 2018-09-20 Viega Technology Gmbh & Co. Kg Pièce de raccordement destinée à être reliée à au moins un tube et procédé de réalisation d'un assemblage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030091A2 (fr) 1979-11-28 1981-06-10 Wirsbo Bruks Aktiebolag Article résistant à la diffusion gazeuse
DE10018324A1 (de) * 2000-04-13 2001-10-25 Gerhard Rosenberg Extrudiertes, spritzgegossenes oder blasgeformtes Rohr, Fitting oder Formstück aus Kunststoff zum Erstellen von Rohrleitungen für flüssige, pastöse und gasförmige Medien
WO2007019921A1 (fr) * 2005-08-19 2007-02-22 Veritas Ag Corps creux dote d'une double couche barriere
DE202010007084U1 (de) * 2010-05-21 2011-09-26 Rehau Ag + Co. Mehrschichtiges Rohr
EP2677220A1 (fr) * 2012-06-20 2013-12-25 TI Automotive Engineering Centre (Heidelberg) GmbH Tuyau pour le transport d'un réfrigérant d'un système de conditionnement d'air et système de tuyau
WO2018167158A1 (fr) * 2017-03-15 2018-09-20 Viega Technology Gmbh & Co. Kg Pièce de raccordement destinée à être reliée à au moins un tube et procédé de réalisation d'un assemblage

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