US20140029927A1 - Pipe assembly for the flow of a fluid and of a current and method for assembling such a pipe assembly - Google Patents

Pipe assembly for the flow of a fluid and of a current and method for assembling such a pipe assembly Download PDF

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Publication number
US20140029927A1
US20140029927A1 US13/953,331 US201313953331A US2014029927A1 US 20140029927 A1 US20140029927 A1 US 20140029927A1 US 201313953331 A US201313953331 A US 201313953331A US 2014029927 A1 US2014029927 A1 US 2014029927A1
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US
United States
Prior art keywords
pipe
lip
pipe assembly
coupling
sheath
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.)
Abandoned
Application number
US13/953,331
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English (en)
Inventor
Nicolas Leblanc
Yannick CEYZERIAT
Geoffroy Meyer
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.)
Akwel SA
Original Assignee
MGI Coutier SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MGI Coutier SA filed Critical MGI Coutier SA
Assigned to MGI COUTIER reassignment MGI COUTIER ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CEYZERIAT, Yannick, LEBLANC, Nicolas, MEYER, GEOFFROY
Publication of US20140029927A1 publication Critical patent/US20140029927A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • 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
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/127—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting electrically conducting
    • 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
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making
    • Y10T29/49083—Heater type

Definitions

  • the present invention relates to a pipe assembly for the flow of a fluid and the circulation of an electrical current along the pipe.
  • the present invention relates to a method for assembling such a pipe assembly.
  • the present invention is notably applicable to the automobile field, in particular to heat a fluid flowing in a pipe. It may be necessary to heat the fluids conveyed in order to de-ice them, in the case of use of the vehicle in very cold conditions.
  • one of the known problems in the use of the aqueous urea solution is that it has a freezing point of approximately ⁇ 12° C.
  • FR2915185A1 describes a pipe 11 having an internal duct configured for the flow of the fluid.
  • An electrical wire 12 is wound helically around the pipe 11 , so as to heat the pipe 11 and the fluid which is flowing therein when the electrical wire 12 is supplied with current.
  • the electrical wire 12 emits as much heat toward the outside environment as toward the pipe 11 , which represents a significant heat loss. Therefore, the transfer of heat from the electrical wire 12 to the fluid has a low efficiency, which requires a high electrical energy consumption.
  • the present invention aims notably to resolve, wholly or partly, the problems mentioned above.
  • the subject of the invention is a pipe assembly, for the flow of a fluid and the circulation of an electrical current along a pipe, the pipe assembly comprising:
  • an electrical wire extends in a groove and the retaining means retain the or each lip in a configuration in which this lip covers the groove.
  • such a pipe assembly prevents the electrical wire from escaping when an operator is handling this pipe assembly. Furthermore, the or each lip and its retaining means prevent any access to the electrical wire, which increases the safety and the efficiency of the pipe assembly.
  • wire designates electrically conductive elements of elongate shape, rectilinear or curved.
  • Such an element can be, for example, made up of one or more strands.
  • said at least one lip is of a single piece with the pipe.
  • At least one lip can be added on to the pipe.
  • a lip can, for example, be produced in a material that is distinct from the material of the pipe.
  • the pipe comprises, for at least one groove, two lips edging the respective groove, so that, in the secondary configuration, the two lips are in contact against one another and cover the respective groove.
  • the pipe comprises at least one so-called long lip and at least one so-called short lip, said at least one long lip and said at least one short lip being arranged so that, in the secondary configuration, a respective long lip penetrates into a cavity delimited by a respective short lip.
  • the pipe assembly also comprises a first coupling and a second coupling having shapes respectively complementing the first terminal portion of the pipe and the second terminal portion of the pipe, the first coupling and the second coupling cooperating with the internal duct so that the fluid flows from the first coupling to the second coupling through the internal duct.
  • first and second couplings make it possible to couple the pipe assembly to a fluid circuit, and keep the pipe in place in a specific position.
  • the pipe assembly also comprises retaining means for keeping said at least one lip in the secondary configuration, the retaining means comprising:
  • first and second jackets make it possible to secure the pipe, the or each electrical wire and the first and second couplings, which prevents them from becoming disassembled when an operator handles the pipe assembly.
  • the pipe assembly also comprises retaining means for keeping said at least one lip in the secondary configuration, the retaining means comprising a sheath configured to grip the pipe, preferably over the entire length of the pipe.
  • the material that makes up the sheath is selected so that a heating of the sheath shrinks the sheath on to the pipe.
  • such a heat-shrinkable sheath facilitates assembly, because it can be prepositioned on the pipe, then heated to assume its definitive shrunk position. By being shrunk, the sheath grips the pipe and deforms the lip, which then covers the electrical wire.
  • the sheath is a textile sheath, which is braided or woven, the thermoplastic or elastomer thermoplastic material of the first jacket and the thermoplastic or elastomer thermoplastic material of the second jacket being inserted between the stitches of the sheath.
  • thermoplastic or elastomer thermoplastic material(s) which is(are) overmolded on the first coupling and the second coupling is(are) inserted between the stitches of the sheath.
  • the pipe comprises at least two grooves, two grooves being preferably situtated respectively on two opposing sides of the internal duct.
  • these two grooves make it possible to house electrical wires on either side of the pipe, for example to uniformly heat the pipe and the fluid which is flowed therein.
  • These two grooves can be rectilinear.
  • these two grooves can have the shape of a double helix which is wound around the pipe.
  • the pipe comprises at least two grooves, two grooves being preferably situtated respectively on two opposite sides of the internal duct.
  • the pipe assembly comprises at least two electrically conductive wires positioned in respective grooves.
  • these two electrical wires for one groove make it possible to fulfil the electrical function (heating or other) with redundancy or with twice the heat exchange surface area.
  • the pipe is made of an elastomer, thermoplastic or elastomer thermoplastic material selected from the group consisting of ethylene-propylene-diene monomer (EPDM), of polyvinyl chloride (PVC) and of polypropylene-ethylene-propylene-diene monomer (PP-EPDM).
  • EPDM ethylene-propylene-diene monomer
  • PVC polyvinyl chloride
  • PP-EPDM polypropylene-ethylene-propylene-diene monomer
  • such a pipe is flexible, which makes it possible to position it easily in a specific position. Furthermore, such materials make it possible to produce the pipe by extrusion.
  • At least one electrically conductive wire is formed by a so-called resistive wire which is designed to convert an electrical current into heat by the Joule effect.
  • such a resistive wire makes it possible to heat the pipe, and therefore the fluid which is flowing therein, with optimum heat efficiency.
  • the groove and the resistive wire are covered by one or more lip(s), the whole quantity of heat emitted by the resistive wire is received by the pipe, then transmitted to the fluid which is flowing therein.
  • the pipe comprises at least one fiber which is overall non-extendable and which is co-extruded with the pipe, said at least one fiber preferably being selected from the group consisting of glass fibers and textile fibers.
  • Such a fiber limits the longitudinal elongation of the flexible pipe, when the pipe assembly is assembled and handled by an operator. Such longitudinal elongation of the pipe would otherwise risk freeing or breaking the electrical wire.
  • the pipe comprises at least two fibers, said at least two fibers being situated respectively on two opposite sides of the internal duct.
  • these two fibers prevent any longitudinal elongation of the flexible pipe.
  • the pipe has a constant cross section.
  • a pipe can be manufactured by extrusion, which incurs a low cost.
  • the pipe has a cross section of overall elliptical shape.
  • the outer surface of the pipe has at least two overall planar faces.
  • planar faces also make it possible to limit the weight of the pipe.
  • At least one groove is parallel to the internal duct.
  • This groove may be rectilinear when the pipe is positioned in a rectilinear manner.
  • this groove can be formed during the extrusion of the pipe, which reduces the cost of manufacture of the pipe assembly.
  • this groove can have a helical shape which is wound around the pipe.
  • such a groove makes it possible to heat the pipe very uniformly.
  • the pipe assembly comprises at least two pipes.
  • a pipe assembly allows for a plurality of fluid flows and a plurality of electrical current circulations.
  • the subject of the present invention is a method for assembling a pipe assembly according to the invention, the method comprising the steps of:
  • FIG. 1 is an exploded perspective view of a pipe assembly according to a first embodiment of the invention
  • FIG. 2 is a larger-scale view of detail II in FIG. 1 ;
  • FIG. 3 is a section of the pipe assembly of FIG. 1 in a plane III in FIG. 2 , during an initial step of a method according to the invention;
  • FIG. 4 is a view similar to FIG. 3 , during a subsequent step of the method according to the invention.
  • FIG. 5 is a view similar to FIG. 3 , during a subsequent step of the method according to the invention.
  • FIG. 6 is an assembled perspective view of the pipe assembly in FIG. 1 ;
  • FIG. 7 is a view similar to FIG. 3 and illustrating a section of a pipe assembly according to a second embodiment of the invention, during an initial step of the method according to the invention
  • FIG. 8 is a view similar to FIG. 7 , during a subsequent step of the method according to the invention.
  • FIG. 9 is a view similar to FIG. 7 , during a subsequent step of the method according to the invention.
  • FIG. 10 is a view similar to FIG. 7 and illustrating a section of a pipe assembly according to a third embodiment of the invention, during an initial step of the method according to the invention.
  • FIGS. 1 and 2 illustrate a pipe assembly 1 , which is intended for the flow of a fluid and for the circulation of an electrical current along a pipe 2 .
  • the fluid is a liquid made up of an aqueous urea solution and the purpose of the electrical current is to heat the aqueous urea solution as it flows in the pipe 2 .
  • the pipe assembly 1 comprises the pipe 2 which has an internal duct 4 , which can be seen in FIG. 2 .
  • the internal duct 4 is configured for the flow of the fluid. To this end, the internal duct 4 opens on to a first terminal portion 2 . 1 of the pipe 2 and on to a second terminal portion 2 . 2 of the pipe 2 .
  • the pipe assembly 1 also comprises a wire 6 which is electrically conductive and which has a length greater than the length of the pipe 2 .
  • the wire 6 is here formed by a resistive wire which is designed to convert an electrical current into heat by the Joule effect.
  • the wire 6 is here made up of a metallic material. The resistivity of the wire 6 is determined according to the application of the pipe assembly 1 , so as produce the requisite quantity of heat.
  • the pipe assembly 1 also comprises an electrical connector 7 to which the wire 6 is securely attached.
  • the function of the electrical connector 7 is to electrically connect the wire 6 to an electrical energy source which is not represented that belongs to the motor vehicle.
  • the wire 6 is folded on itself.
  • the pipe 2 has a length L2 of approximately 300 mm and the wire 6 has a length of approximately 600 mm.
  • the pipe 2 comprises two grooves 8 and 10 which each extend overall between the first terminal portion 2 . 1 of the pipe 2 and the second terminal portion 2 . 2 of the pipe 2 .
  • Each groove 8 or 10 extends overall along the pipe 2 .
  • Each groove 8 or 10 forms a kind of concavity opening on the outer surface of the pipe 2 .
  • each groove 8 or 10 is parallel to the internal duct 4 , when the pipe 2 is rectilinear.
  • each groove 8 or 10 is rectilinear when the pipe 2 is positioned in a rectilinear manner, along a longitudinal axis X 4 .
  • the two grooves 8 and 10 are situated respectively on the two opposite sides of the internal duct 4 , that is to say on either side of the longitudinal axis X 4 .
  • the pipe 2 has a constant cross section, which here has an overall elliptical shape, as FIGS. 3 , 4 and 5 show.
  • the cross section of the pipe 2 is identical to the section illustrated in FIG. 3 in any cutting plane parallel to the plane III in FIG. 2 , that is to say in any plane at right angles to the longitudinal axis X 4 .
  • the pipe 2 also comprises four lips 11 , 12 , 13 and 14 .
  • the pipe 2 here comprises, for each groove 8 or 10 , two respective lips 11 and 12 or 13 and 14 .
  • Each lip 11 or 12 extends here substantially parallel to the groove 8 .
  • the lips 11 and 12 edge the respective groove 8 , so that, in the secondary configuration ( FIG. 5 ), the lips 11 and 12 are in contact against one another and cover the groove 8 .
  • the lips 11 and 12 have substantially the same shape and the same dimensions.
  • each lip 13 or 14 extends here substantially parallel to the groove 10 .
  • the lips 13 and 14 edge the respective groove 10 , so that, in the secondary configuration ( FIG. 4 ), the lips 13 and 14 are in contact against one another and cover the groove 10 .
  • the lips 13 and 14 have substantially the same shape and the same dimensions.
  • the lips 11 , 12 , 13 and 14 and the pipe 2 are of a single piece.
  • the lips 11 , 12 , 13 and 14 are situated in an external peripheral region of the pipe 2 .
  • the pipe 2 here is made of an elastomer material.
  • Each lip 11 or 12 can be deformed so as to change:
  • the primary configuration is an assembly configuration and the secondary configuration is a service configuration.
  • each lip 13 or 14 can be deformed so as to change:
  • the wire 6 forms a fold or a bend at the terminal portion 2 . 1 or 2 . 2 .
  • the wire 6 describes a round trip out and back along the pipe 2 , in the grooves 8 and 10 .
  • the pipe assembly 1 comprises a sheath 16 which is configured to grip the pipe 2 over the entire length L2 and over the entire outer surface of the pipe 2 .
  • the sheath 16 forms a retaining means for keeping the lips 11 , 12 , 13 and 14 in the secondary configuration ( FIG. 5 ).
  • the material of which the sheath 16 is made is selected so that a heating of the sheath 16 shrinks the sheath 16 on to the pipe 2 .
  • the sheath 16 can easily be threaded around the pipe 2 .
  • the sheath 16 is represented in the shrunk configuration, in which the sheath 16 grips the pipe 2 over the entire length L2 and over the entire outer surface of the pipe 2 .
  • the sheath 16 is here a braided textile sheath.
  • the pipe assembly 1 comprises a first coupling 21 and a second coupling 22 .
  • the first coupling 21 and the second coupling 22 have shapes respectively complementing the first terminal portion 2 . 1 of the pipe 2 and the second terminal portion 2 . 2 of the pipe 2 .
  • first coupling 21 and the second coupling 22 each have a ringed end-fitting of “Christmas tree” type which can be fitted into the internal duct 4 .
  • first coupling 21 and the second coupling 22 can cooperate with the internal duct 4 so that the aqueous urea solution flows from the first coupling 21 to the second coupling 22 through the internal duct 4 .
  • the functions of the first coupling 21 and the second coupling 22 are to couple the pipe assembly 1 to a fluid circuit which is not represented, and to hold the pipe 2 in place in a specific position in the motor vehicle.
  • first coupling 21 and the second coupling 22 have respective coupling parts 21 . 5 and 22 . 5 which are configured for a snap-fitting onto complementary elements which are not represented and linked to the motor vehicle.
  • the pipe assembly 1 comprises a first jacket 24 and a second jacket 25 .
  • the first jacket 24 and the second jacket 25 are made of a thermoplastic material.
  • the first jacket 24 is overmolded around a part of the first coupling 21 and around the first terminal portion 2 . 1 of the pipe 2 .
  • the second jacket 25 is overmolded around a part of the second coupling 22 and around the second terminal portion 2 . 2 of the pipe 2 .
  • the first jacket 24 and the second jacket 25 form retaining means for keeping the lips 11 , 12 , 13 and 14 in the secondary configuration ( FIG. 5 ).
  • the first jacket 24 and the second jacket 25 grip the lips 11 , 12 , 13 and 14 .
  • thermoplastic material of the first jacket 24 and the thermoplastic material of the second jacket 25 are inserted between the stitches of the sheath 16 of textile type.
  • the result of this is a strong mechanical cohesion of the sheath 16 with the first and second jackets 24 and 25 , therefore with the first and second couplings 21 and 22 .
  • one production method comprises the steps of:
  • the sheath 16 is threaded around the pipe 2 then shrunk by heating; furthermore, the first jacket 24 and the second jacket 25 are overmolded on the sheath 16 and on the first and second couplings 21 and 22 .
  • the pipe assembly 1 is in service configuration.
  • the coupling parts 21 . 5 and 22 . 5 of the first coupling 21 and of the second coupling 22 are then snap-fitted onto the complementary members, which keep the pipe 2 in place in its specific position provided in the motor vehicle.
  • the pipe 2 can be subject to mechanical bending, pulling and/or torsional stresses.
  • the pipe 2 is subject to mechanical bending and torsional stresses, located according to the arrows 28 and 29 in FIG. 6 .
  • the retaining means here formed by the sheath 16 and by the first and second jackets 24 and 25 , prevent the wire 6 from escaping from the groove, and even prevent any breakage of the wire 6 .
  • FIGS. 7 , 8 and 9 illustrate a part of a pipe assembly 101 according to a second embodiment of the invention.
  • the description of the pipe assembly 1 given above in relation to FIGS. 1 to 6 can be transposed to the pipe assembly 101 , apart from the notable differences described hereinbelow.
  • a component of the pipe assembly 101 that is identical or corresponds, by its structure or by its function, to a component of the pipe assembly 1 bears the same numerical reference increased by 100.
  • a pipe 102 There are thus defined a pipe 102 , an internal duct 104 with a longitudinal axis X 104 and two grooves 108 and 110 .
  • the pipe assembly 101 differs from the pipe assembly 1 , in that the pipe 102 comprises two long lips 112 and 114 and two short lips 111 and 113 .
  • the long lip 112 and the short lip 111 are arranged so that, in the secondary configuration ( FIG. 8 ), the long lip 112 penetrates into a cavity delimited by the short lip 111 . This cavity corresponds to a part of the groove 108 .
  • the long lip 112 is folded at its base to penetrate into this cavity.
  • the long lip 114 and the short lip 113 are arranged so that, in the secondary configuration ( FIG. 8 ), the long lip 114 penetrates a cavity delimited by the short lip 113 .
  • This cavity corresponds to a part of the groove 110 .
  • the long lip 114 is folded at its base to penetrate this cavity.
  • the pipe assembly 101 differs from the pipe assembly 1 , in that the pipe assembly 101 comprises two wires 106 . 1 and 106 . 2 which are electrically conductive and which are positioned in each groove 108 and 110 .
  • the pipe assembly 101 differs from the pipe assembly 1 , in that the outer surface of the pipe 102 has two faces 102 . 3 and 102 . 4 which are overall planar, instead of having a section that is overall elliptical like the pipe 2 .
  • the pipe assembly 101 differs from the pipe assembly 1 , in that the sheath 116 is a retaining sheath, instead of a heat-shrinkable sheath like the sheath 16 .
  • the sheath 116 is optional, because the long lips 112 and 114 are sufficient to keep the grooves 108 and 110 respectively closed, including when the pipe 102 is subject to a torsion or a bending (see FIG. 6 ).
  • the pipe assembly 101 can have added to it retaining means as described hereinabove in relation to FIG. 6 with a first and a second thermoplastic jackets overmolded on to the pipe and on to the first and second couplings.
  • FIG. 10 illustrates a part of pipe assembly 201 according to a third embodiment of the invention.
  • the description of the pipe assembly 1 given hereinabove in relation to FIGS. 7 , 8 and 9 can be transposed to the pipe assembly 201 , apart from the notable differences described hereinbelow.
  • the component of the pipe assembly 201 that is identical or corresponds, by its structure or by its function, to a component of the pipe assembly 101 bears the same numerical reference increased by 100.
  • a pipe 202 an internal duct 204 with a longitudinal axis X 204 , two grooves 208 and 210 , short lips 211 and 213 and long lips 212 and 214 .
  • the pipe assembly 201 differs from the pipe assembly 101 because that the pipe 202 comprises two fibers 231 and 232 .
  • the fibers 231 and 232 are overall non-extendable and they are co-extruded with the pipe 202 .
  • the fibers 231 and 232 therefore extend along the pipe 202 .
  • the fibers 231 and 232 here consist of glass fibers.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US13/953,331 2012-07-27 2013-07-29 Pipe assembly for the flow of a fluid and of a current and method for assembling such a pipe assembly Abandoned US20140029927A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR12/57294 2012-07-27
FR1257294A FR2993956B1 (fr) 2012-07-27 2012-07-27 Ensemble de tuyau pour l’ecoulement d’un fluide et d’un courant et procede pour assembler un tel ensemble de tuyau

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US20140029927A1 true US20140029927A1 (en) 2014-01-30

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US13/953,331 Abandoned US20140029927A1 (en) 2012-07-27 2013-07-29 Pipe assembly for the flow of a fluid and of a current and method for assembling such a pipe assembly

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US (1) US20140029927A1 (fr)
CN (1) CN103574212A (fr)
FR (1) FR2993956B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3133329A1 (fr) * 2015-08-20 2017-02-22 TI Automotive (Fuldabrück) GmbH Conduite de vehicule automobile chauffante et procede de fabrication d'une conduite de vehicule automobile chauffante
US20170122478A1 (en) * 2014-06-17 2017-05-04 Norma Germany Gmbh Fluid line
US20170130886A1 (en) * 2014-06-17 2017-05-11 Norma Germany Gmbh Heatable fluid line

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US2687626A (en) * 1952-02-16 1954-08-31 Bohn Aluminium & Brass Corp Heat exchanger having open-sided bore superimposed on closed bore
DE2340489A1 (de) * 1973-08-10 1975-02-20 Braun Ag Elektrischer durchflusserhitzer
DE2942523A1 (de) * 1979-10-20 1981-04-30 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Elektrischer durchlauferhitzer
US4371777A (en) * 1979-12-03 1983-02-01 Fritz Eichenauer Gmbh And Co. Kg Continuous flow electric water heater
US4395882A (en) * 1978-11-13 1983-08-02 Sunspool Corporation Freeze protection apparatus for solar collectors
US5724478A (en) * 1996-05-14 1998-03-03 Truheat Corporation Liquid heater assembly
US6330395B1 (en) * 1999-12-29 2001-12-11 Chia-Hsiung Wu Heating apparatus with safety sealing
US6442341B1 (en) * 2000-11-27 2002-08-27 Chia-Hsiung Wu Simple-type fluid heating tube structural arrangement
US7711251B2 (en) * 2006-12-27 2010-05-04 Barkey Gmbh & Co. Kg Device for temperature controlled heating of a fluid line

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FR2041737A7 (en) * 1969-05-16 1971-02-05 Bonnet Michel Fixing electric cable on pneumatic tube
FR2769967B1 (fr) * 1997-10-22 1999-12-17 Seb Sa Cordon mixte de dispositif de repassage a vapeur
WO2007053102A1 (fr) * 2005-11-04 2007-05-10 Delaval Holding Ab Élément tubulaire

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Publication number Priority date Publication date Assignee Title
US2687626A (en) * 1952-02-16 1954-08-31 Bohn Aluminium & Brass Corp Heat exchanger having open-sided bore superimposed on closed bore
DE2340489A1 (de) * 1973-08-10 1975-02-20 Braun Ag Elektrischer durchflusserhitzer
US4395882A (en) * 1978-11-13 1983-08-02 Sunspool Corporation Freeze protection apparatus for solar collectors
DE2942523A1 (de) * 1979-10-20 1981-04-30 Türk & Hillinger GmbH & Co, 7200 Tuttlingen Elektrischer durchlauferhitzer
US4371777A (en) * 1979-12-03 1983-02-01 Fritz Eichenauer Gmbh And Co. Kg Continuous flow electric water heater
US5724478A (en) * 1996-05-14 1998-03-03 Truheat Corporation Liquid heater assembly
US6330395B1 (en) * 1999-12-29 2001-12-11 Chia-Hsiung Wu Heating apparatus with safety sealing
US6442341B1 (en) * 2000-11-27 2002-08-27 Chia-Hsiung Wu Simple-type fluid heating tube structural arrangement
US7711251B2 (en) * 2006-12-27 2010-05-04 Barkey Gmbh & Co. Kg Device for temperature controlled heating of a fluid line

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170122478A1 (en) * 2014-06-17 2017-05-04 Norma Germany Gmbh Fluid line
US20170130886A1 (en) * 2014-06-17 2017-05-11 Norma Germany Gmbh Heatable fluid line
US10371302B2 (en) * 2014-06-17 2019-08-06 Norma Germany Gmbh Heatable fluid line
US10539262B2 (en) * 2014-06-17 2020-01-21 Norma Germany Gmbh Fluid line
EP3158251B1 (fr) * 2014-06-17 2020-04-29 NORMA Germany GmbH Conduite de fluide chauffante
EP3133329A1 (fr) * 2015-08-20 2017-02-22 TI Automotive (Fuldabrück) GmbH Conduite de vehicule automobile chauffante et procede de fabrication d'une conduite de vehicule automobile chauffante
WO2017029239A1 (fr) * 2015-08-20 2017-02-23 TI Automotive (Fuldabrück) GmbH Conduite tubulaire chauffante de véhicule à moteur et procédé de réalisation d'une conduite tubulaire chauffante de véhicule à moteur
US20180363824A1 (en) * 2015-08-20 2018-12-20 TI Automotive (Fuldabrück) GmbH Heatable motor-vehicle pipeline and method for producing a heatable motor-vehicle pipeline

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FR2993956A1 (fr) 2014-01-31
FR2993956B1 (fr) 2015-05-22
CN103574212A (zh) 2014-02-12

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