EP4045829A1 - Tuyau, en particulier pour des applications de fluide frigorifique - Google Patents

Tuyau, en particulier pour des applications de fluide frigorifique

Info

Publication number
EP4045829A1
EP4045829A1 EP20771499.9A EP20771499A EP4045829A1 EP 4045829 A1 EP4045829 A1 EP 4045829A1 EP 20771499 A EP20771499 A EP 20771499A EP 4045829 A1 EP4045829 A1 EP 4045829A1
Authority
EP
European Patent Office
Prior art keywords
layer
hose
reinforcement
thermoplastic
elastomer material
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.)
Pending
Application number
EP20771499.9A
Other languages
German (de)
English (en)
Inventor
Alexandra Brandt
Michael Sont
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.)
ContiTech Techno Chemie GmbH
Original Assignee
ContiTech MGW GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ContiTech MGW GmbH filed Critical ContiTech MGW GmbH
Publication of EP4045829A1 publication Critical patent/EP4045829A1/fr
Pending legal-status Critical Current

Links

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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557—Details of ducts or cables
    • B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
    • 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
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • 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
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
    • F16L11/082—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire two 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • F16L11/086—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers two 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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B29K2021/003—Thermoplastic elastomers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/005—Hoses, i.e. flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • 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 hose, in particular for refrigerant at turns.
  • the hose is particularly suitable as a pressure carrier hose for refrigerant lines, in particular for CO 2 , for use as a pressure carrier for corrugated pipes.
  • Refrigerant hoses that are installed in air conditioning systems for the automotive industry are usually filled with fluorocarbons as refrigerants. When released into the atmosphere, this type of refrigerant has a negative impact on the Elm world, for example in the form of acid rain or the greenhouse effect. CO 2 is a more environmentally friendly refrigerant. Due to its molecular size and its physicochemical properties, however, it poses new requirements and challenges for the air conditioning system, which, among other things, have to be met or solved by new hose systems.
  • Hoses that are used for conventional refrigerants usually consist of three different layers: an inner layer, a reinforcement layer and an outer layer, whereby the outer layer and the inner layer are usually made of an elastomeric material and the inner layer is often multi-layered, plus one layer made of a thermoplastic material, which significantly improves the barrier properties of the hose with regard to refrigerant loss, but at the same time worsens the flexibility of the hose.
  • EPDM, EPM, BIMS, BIIR, CIIR, IIR, CM, AEM, ACM, CR, NBR, HNBR alone or in combination can be used as elastomers for the inner layer and / or the outer layer.
  • the reinforcement layer usually consists of organic fiber systems such as polyester, polyamide, rayon, aramid or PVOH yarn and is usually in braided or spiraled, ie wound form.
  • thermoplastic layer of the inner layer can either be inside the tube (veneer tube also, see FIGS. 1 and 2) or it can be embedded as a barrier layer between two further layers of the inner layer (barrier tube also, see FIGS. 3 and 4).
  • Polyamides have proven to be useful as a material for the barrier layer. Impact modified PA.6 grades in particular are nowadays used for air conditioning hose production due to their good compromise between flexibility and barrier function.
  • the aforementioned hose structure must be redesigned for use with CO2 as a refrigerant.
  • the high pressure side in particular places increased demands on the refrigerant line and the associated hose systems due to peak temperatures of approx. 180 ° C and pressures of around 90 bar.
  • the present invention has the task of providing a suitable hose construction with the appropriate materials, which is designed to increase the inner diameter by compressing the hose in order to mount a corrugated pipe if necessary, which at the end of the entire hose concept provides the necessary flexibility and barrier function gives corresponding temperature and pressure load.
  • an innermost layer A4 which is composed of thermoplastic material or thermoplastic elastomer material
  • outer layer C which is composed of polymer material.
  • the innermost layer A4 can also be referred to here as a film. Surprisingly, it has been shown that the innermost layer, in addition to serving as an assembly aid for the corrugated pipe integration, gives the entire hose system, ie including the corrugated pipe, sufficient stability under impulse loads to maintain the function of the entire system in terms of tightness. At the same time, the material of the innermost layer can have sufficient flexibility in order not to form any cracks during pressing and under mechanical stress, as well as the necessary temperature requirements in order not to lose the properties just mentioned in the long term.
  • the hose according to the invention is particularly suitable for use as a pressure carrier hose for refrigerant lines, in particular with CO 2 as the refrigerant.
  • a corrugated pipe through which the refrigerant is to flow is introduced into the hose according to the invention.
  • the term "in this order” refers to an inside-out order of the hose.
  • the innermost layer generally forms the innermost layer of the hose.
  • the inner layer is applied to the innermost layer, i.e. the inner layer is in particular in direct proximity to or in contact with the innermost layer.
  • the innermost layer and the inner layer together form the inner layer of the hose, which can optionally comprise one or more further layers between the inner layer and the reinforcement layer, but this is not preferred.
  • the hose has an innermost layer as the innermost layer, which is composed of thermoplastic material or thermoplastic elastomer material.
  • the thermoplastic material comprises or consists of one or more thermoplastics.
  • the thermoplastic elastomer material comprises or consists of one or more thermoplastic elastomers.
  • the thermoplastics or thermoplastic elastomers used are preferably flexible and heat-resistant.
  • the innermost layer can optionally contain one or more additives, such as fillers or Stabilizers, contain, the total proportion of additives preferably not more than 10% by weight, more preferably not more than 5% by weight, of the innermost layer.
  • the innermost layer is in particular a thermoplastic layer or a thermoplastic and elastomeric layer.
  • thermoplastic copolyester elastomer has proven to be a particularly suitable material for the innermost layer.
  • one or more of the following materials can be considered as thermoplastic material or thermoplastic elastomer material of the innermost layer: polypropylene (PP), polyethylene (PE), polymethylpentene (PMP), thermoplastic elastomer (TPE), Polyamide, such as PA6, PA66, PA11, PA12, PA46, PA610, PA9T, PA6T, fluoropolymer or silicone polymer.
  • the thermoplastic material or thermoplastic elastomer material of the innermost layer therefore preferably contains or consists of at least one thermoplastic elastomer (TPE), polyamide, fluoropolymer, silicone polymer or a combination thereof, with TPE or polyamide being preferred.
  • TPE thermoplastic elastomer
  • the polyamide is preferably polyolefin-modified polyamide or elastomer-modified polyamide. If the material contains or consists of TPE, it is in particular a thermoplastic elastomer material.
  • the thermoplastic material or thermoplastic elastomer material of the innermost layer contains or consists of thermoplastic copolyester elastomer (TPC).
  • TPC thermoplastic copolyester elastomer
  • the TPC can be a bond-modified TPC, which is understood to mean a TPC which has been modified for better chemical bonding to an adjacent layer. Such a modification of TPC can take place by incorporating additional reactive groups into the TPC polymer.
  • An example of a bond-modified TPC is a maleic anhydride grafted TPC.
  • the innermost layer preferably has a wall thickness in the range from 0.05 to 0.6 mm, more preferably from 0.08 to 0.15 mm, a wall thickness of about 0.1 mm being particularly preferred.
  • the hose according to the invention also has an inner layer which is applied to the innermost layer and is made up of an elastomer material.
  • the elastomer material comprises or consists of one or more elastomers.
  • the inner layer can optionally contain one or more additives, such as fillers or stabilizers, the total amount of additives being dependent on the type of mixture used. When using AEM as an elastomer material, the total amount of additives can, for example, preferably not exceed 60% by weight, more preferably not more than 50% by weight, of the inner layer.
  • the inner layer is located between the innermost layer and the at least one reinforcement.
  • the inner layer is in particular an elastomeric layer.
  • the elastomer material of the inner layer contains ethylene-acrylate rubber (AEM), acrylate rubber (ACM), fluorine rubber (FPM), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM) , hydrogenated acrylonitrile butadiene rubber (HNBR), brominated copolymer of isobutylene and paramethyl styrene (BIMS), ethylene vinyl acetate rubber (EVM), silicone rubber (VMQ) or blends thereof or blends with other elastomers, or consists of them.
  • the elastomer material particularly preferably contains AEM, in particular diamine crosslinked AEM, or consists of it.
  • the inner layer is preferably in extruded form.
  • the inner layer preferably has a thickness in the range from 0.5 to 2.5 mm, more preferably from 1 to 1.5 mm.
  • the hose according to the invention also contains one, two or more reinforcement layers, one or two reinforcement layers being preferred.
  • the reinforcement (s) in the reinforcement layer (s) are arranged at an angle which is smaller than the neutral angle of 54.7 °, the angle being preferred in the range from 15 to 53.6 °, preferably from 30 to 37 °, in particular from about 34 to 35 °.
  • this angle of the reinforcement relates to the acute angle that results between the thread orientation of the reinforcement and the longitudinal axis of the hose.
  • the neutral angle (54.7 °) or neutral angle of the reinforcement is the angle at which the hose remains dimensionally stable under pressure. If the angle is smaller than the neutral angle, the hose diameter increases under pressure load, while if the angle is larger than the neutral angle, the hose diameter decreases under pressure load.
  • the reinforcement is usually in the form of thread, yarn, fiber, cord or wire.
  • the reinforcement layer is usually applied by braiding or spiraling (coiling) the reinforcement, preferably on the inner layer.
  • the reinforcement is therefore preferably in a braided or spiraled, i.e. wound form.
  • Metal wire such as p-aramid or m-aramid, polyamides, polyethylene terephthalate (PET) or polyvinyl alcohol (PVOH) or combinations of the above in the form of hybrid systems are preferred as the material for the reinforcement
  • Reinforcement is preferably yarn, threads or fibers.
  • the reinforcement is preferably formed from metal wire, steel wire being particularly preferred.
  • one or two, preferably one, reinforcement layers can be arranged.
  • one or two, preferably two, reinforcement layers can be arranged.
  • two reinforcement layers are generally used, which can be the same or different from one another.
  • the at least one reinforcement layer comprises or are two reinforcement layers, there is preferably an intermediate layer between the two two reinforcement layers, which is preferably composed of elastomer material, with the two reinforcement layers are preferably spiralized or wound reinforcement layers.
  • the intermediate layer is preferably made up of an elastomer material.
  • the elastomer material comprises or consists of one or more elastomers.
  • the intermediate layer can optionally contain one or more additives such as fillers or stabilizers.
  • the intermediate layer preferably has a thickness in the range from 0.1 to 0.2 mm. The optional intermediate layer is therefore in particular an elastomeric layer.
  • the elastomer material of the intermediate layer advantageously contains or consists of AEM, ACM, FPM, EPDM, EPM, HNBR, BIMS, EVM, VMQ or combinations thereof.
  • the elastomer material particularly preferably contains AEM, in particular diamine crosslinked AEM, or consists of it.
  • the intermediate layer is preferably in extruded form.
  • the hose according to the invention optionally has an outer layer or outer layer which is made up of polymer material. It is preferred that an outer layer made up of a polymer material is present.
  • the polymer material can be, for example, thermoplastic material, thermoplastic elastomer material or elastomer material, preferably elastomer material.
  • the polymer material, preferably elastomer material, of the optional outer layer comprises or consists of one or more polymers, preferably elastomers.
  • the outer layer can optionally contain one or more additives, such as fillers or stabilizers, for example, whereby the total amount of additives can depend heavily on the type of mixture used. If AEM is used as an elastomer material, the total amount of additives can, for example, preferably not exceed 60% by weight, more preferably not more than 50% by weight, of the outer layer.
  • the optional and preferred outer layer is in particular an elastomeric layer.
  • the elastomer material of the outer layer contains AEM, ACM, FPM, EPDM, EPM, HNBR, BIMS, EVM, VMQ or blends thereof or blends with other elastomers, or consists of them.
  • the elastomer material particularly preferably contains AEM, in particular diamine crosslinked AEM, or consists of it.
  • the outer layer is preferably in extruded form.
  • the outer layer preferably has a thickness in the range from 0.1 to 2.5 mm, more preferably from 1 to 1.8 mm.
  • the innermost layer the inner layer, the at least one reinforcement and the optional layers described above (intermediate layer, outer layer, adhesion promoter layer), further layers may optionally be included, but this is not preferred.
  • the hose according to the invention has the following structure, the reinforcement layer (s) preferably being formed from metal wire, in particular steel wire, and / or where, if necessary, one or more adhesion promoter layers are added to the hose structure:
  • TPC film (innermost layer) / inner AEM layer / braided reinforcement layer / outer AEM layer or
  • TPC film innermost layer / spiralized reinforcement layer / AEM intermediate layer / AEM intermediate layer / spiraled reinforcement layer / outer AEM layer
  • the hose according to the invention is particularly suitable as a pressure carrier hose for coolant lines.
  • a corrugated pipe is preferably used as the coolant line. In the preferred embodiment, there is therefore a inside the hose Corrugated pipe arranged.
  • Corrugated pipes are known to the person skilled in the art.
  • a corrugated pipe is generally a pipe made of rigid material with an undulating changing diameter, the corrugation giving the pipe flexibility.
  • the corrugated pipe can be made of metal or plastic, for example, metal being preferred, since plastic is only suitable at relatively low temperatures and pressures in the case of CO2.
  • the invention also relates to a method for producing a hose according to the invention as described above, comprising the following steps
  • thermoplastic material or thermoplastic elastomer material to a dome, preferably by extrusion, in order to form the innermost layer (A4)
  • the at least one reinforcement layer over the inner layer (A5) by braiding or spiraling, the reinforcement being arranged at an angle that is smaller than the neutral angle of 54.7 °, and optionally applying a material, the polymer material, preferably elastomer material, contains, over the at least one reinforcement layer, preferably by extrusion, in order to form the outer layer (C).
  • the innermost layer, the inner layer and / or, if present, the intermediate layer and / or the outer layer of the hose, preferably the refrigerant hose, are preferably extruded one after the other onto a mandrel.
  • the hose is then vulcanized and de-thorned.
  • the hose according to the invention is then available for corrugated pipe assembly.
  • the hose is first preferably cut to the desired length.
  • the hose or hose blank can then be compressed, which leads to an increase in the inside diameter, as a result of which the corrugated pipe can be pushed in.
  • the invention also relates to the use of a hose according to the invention as described above as a pressure carrier hose for refrigerant lines, in particular in the case of CO2 as the refrigerant.
  • the hose is particularly suitable for use at an operating temperature of 160 ° C. or more, in particular with the selection of materials described above.
  • thermoplastic layer A1 of the inner layer A consists of polyamide and the innermost layer of the inner layer as a barrier layer A, another second layer A2 of the inner layer A and an outer layer C.
  • thermoplastic layer A1 of the inner layer A consists of polyamide and the innermost layer as a barrier layer of the inner layer A, another second layer A2 of the inner layer A, an additional elastomeric intermediate layer D and an outer layer C.
  • Fig. 3 shows a refrigerant hose in the form of a barrier hose from the prior art with a braided reinforcement layer B, a three-layer structure of the inner layer A, in which the thermoplastic layer A1 of the inner layer made of polyamide as a barrier layer between two further layers A2, A3 of Inner layer A is embedded, a further second layer A2 of the inner layer A, an additional third layer A3 of the inner layer A and an outer layer C.
  • thermoplastic layer A1 of the inner layer A made of polyamide is embedded as a barrier layer between two further layers A2, A3 of the inner layer A, another second layer A2 of the inner layer A, an additional third layer A3 of the inner layer A, an additional one elastomer intermediate layer D and an outer layer C.
  • Fig. 5 shows a hose according to the invention with a braided reinforcement layer B, a two-layer structure of the inner layer A, in which the first layer in the form of an innermost layer (film) A4 of the inner layer A is made of a thermoplastic or thermoplastic elastomer and the second layer ( the inner layer) A5 of the inner layer A is composed of an elastomeric material.
  • the outer layer C is optional and also polymeric in nature.
  • Fig. 6 shows a hose according to the invention with two spiralized reinforcement layers B1 and B2, a two-layer structure of the inner layer A, in which the first layer in the form of an innermost layer A4 of the inner layer A is made of a thermoplastic or thermoplastic elastomer and the second layer A5 of the Inner layer A is made up of an elastomeric material, an additional optional intermediate layer D and an optional outer layer C.
  • FIG. 7 shows a hose not according to the invention for comparison purposes with a braided reinforcement layer B, only an inner layer or layer A5, which is made up of an elastomeric material.
  • the outer layer C is again optional and also polymeric in nature.
  • the hose does not have an inner layer A4, which is made up of a thermoplastic or thermoplastic elastomer.
  • the hose structure of the hoses was as follows (the inner layer, the reinforcement and the outer layer are the same in all examples): Inner layer A4 (film): TPC (Arnitel CM622, from DSM), layer thickness 0.06 mm (E3); TPC (Arnitel CM622, from DSM), layer thickness 0.1 mm (E2); Polyamide PA6 (Orgalloy LT5050, from Arkema), layer thickness 0.1 mm (El); without inner layer A4 (VI)
  • Inner layer A5 AEM, layer thickness 1.3 mm
  • Reinforcement layer B steel wire, braided, braid angle 34 °
  • Outer layer C AEM, layer thickness 1.4 mm. Test results
  • Table 1 shows various physical test results using the hose produced without the innermost layer VI and the inventive hoses E1, E2 and E3 produced. Before the function tests, the hoses were each mounted on a corrugated pipe of the same nature.
  • test results were determined based on DIN Spec 74106.
  • the rating “+” means that the test was passed, the rating means that the test was not passed, the rating “+/-” means that the test was partially passed.
  • the hose E2 according to the invention is suitable as a pressure carrier hose for use in the high temperature range (currently briefly max. 180 ° C.) and CO2 as the refrigerant. He is characterized by a sufficiently good heat resistance and good flexibility at low temperatures. In addition, the hose in combination with the corrugated pipe shows good impulse behavior.
  • the hoses E1 and E3 according to the invention are conditionally suitable for use as pressure carrier hose in the high-temperature range.
  • the corrugated pipe assembly is simpler in the hoses E1, E2 and E3 according to the invention.
  • A2 another second layer of the inner layer
  • A5 elastomeric layer (inner layer)

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un tuyau, qui comprend au moins les couches suivantes dans la séquence donnée : une couche la plus à l'intérieur (A4), qui est constituée d'un matériau thermoplastique ou d'un matériau élastomère thermoplastique ; une couche intérieure (A5), qui est appliquée à la couche la plus à l'intérieur (A4) et est constituée d'un matériau élastomère ; au moins une couche d'élément de renforcement (B, B1, B2), l'élément de renforcement étant disposé selon un angle inférieur à l'angle neutre de 54,7°, et éventuellement une couche extérieure (C), qui est constituée d'un matériau polymère. Le tuyau est particulièrement adapté en tant que tuyau de support de pression pour des conduites de fluide frigorifique, en particulier pour le CO2, pour une utilisation en tant que support de pression de conduites ondulées.
EP20771499.9A 2019-10-14 2020-09-04 Tuyau, en particulier pour des applications de fluide frigorifique Pending EP4045829A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019215713.0A DE102019215713A1 (de) 2019-10-14 2019-10-14 Schlauch, im speziellen für Kältemittelanwendungen
PCT/EP2020/074821 WO2021073804A1 (fr) 2019-10-14 2020-09-04 Tuyau, en particulier pour des applications de fluide frigorifique

Publications (1)

Publication Number Publication Date
EP4045829A1 true EP4045829A1 (fr) 2022-08-24

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Application Number Title Priority Date Filing Date
EP20771499.9A Pending EP4045829A1 (fr) 2019-10-14 2020-09-04 Tuyau, en particulier pour des applications de fluide frigorifique

Country Status (5)

Country Link
US (1) US20240102585A1 (fr)
EP (1) EP4045829A1 (fr)
CN (1) CN114555998A (fr)
DE (1) DE102019215713A1 (fr)
WO (1) WO2021073804A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633912A (en) * 1985-05-31 1987-01-06 The Goodyear Tire & Rubber Company Hose construction
KR100305263B1 (ko) * 1996-02-20 2001-11-22 마쯔무라 아쯔시 냉매수송용호스
DE102007047495B4 (de) * 2007-10-04 2009-07-16 Contitech Kühner Gmbh & Cie. Kg Wellrohrschlauchleitung sowie Verfahren zu deren Herstellung
US9592648B2 (en) * 2009-06-01 2017-03-14 Gates Corporation Low-permeation flexible fuel hose
DE102011052723A1 (de) * 2011-08-16 2013-04-04 Contitech Mgw Gmbh Extrudierter Formartikel, insbesondere Formschlauch, mit einer eingebetteten Verstärkung aus einem Feingestrick sowie Verfahren zu seiner Herstellung
US9841125B2 (en) * 2013-09-16 2017-12-12 Eaton Corporation Hose with rubber and plastic
CN109340473A (zh) * 2018-10-25 2019-02-15 南京利德东方橡塑科技有限公司 一种满足新型制冷剂的金属波纹空调管及其制备方法

Also Published As

Publication number Publication date
WO2021073804A1 (fr) 2021-04-22
US20240102585A1 (en) 2024-03-28
DE102019215713A1 (de) 2021-04-15
CN114555998A (zh) 2022-05-27

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