WO2011139898A1 - Ensemble tubage et raccord chauffé à l'électricité et destiné à des systèmes de réduction catalytique sélective (scr) - Google Patents

Ensemble tubage et raccord chauffé à l'électricité et destiné à des systèmes de réduction catalytique sélective (scr) Download PDF

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Publication number
WO2011139898A1
WO2011139898A1 PCT/US2011/034585 US2011034585W WO2011139898A1 WO 2011139898 A1 WO2011139898 A1 WO 2011139898A1 US 2011034585 W US2011034585 W US 2011034585W WO 2011139898 A1 WO2011139898 A1 WO 2011139898A1
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WO
WIPO (PCT)
Prior art keywords
tube
fitting
assembly
heating element
end portion
Prior art date
Application number
PCT/US2011/034585
Other languages
English (en)
Inventor
Steven M. Powell
Paul C. Menmuir
Ty A. Henry
Original Assignee
Parker-Hannifin Corporation
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 Parker-Hannifin Corporation filed Critical Parker-Hannifin Corporation
Publication of WO2011139898A1 publication Critical patent/WO2011139898A1/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
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/01—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance

Definitions

  • the present invention relates broadly to an electrically-heatable tubing and fitting assembly, and more particularly to such an assembly for use in transferring a urea, i.e., carbamide, solution in a diesel engine emissions after-treatment system.
  • a urea i.e., carbamide
  • SCR selective catalytic reduction
  • NO x nitrogen oxides
  • N 2 0 diatomic nitrogen
  • SCR is used to reduce emissions in diesel engines such as for ships, locomotives, gas turbines, and trucks.
  • urea-based SCR system such as may be used on a heavy duty truck for example
  • a urea solution tank pressure regulators, a control unit, temperature sensors, a dosing module, and a pump.
  • flexible hose assemblies are employed. Many of these assemblies use plastic-bodied quick-connect fittings, such as specified in Society of Automotive Engineers (SAE) Standard J2044, to allow for the assembly and disassembly of the system components.
  • SAE Society of Automotive Engineers
  • a common problem of urea-based SCR systems is the relatively high freezing point of the urea solution.
  • the freezing temperature of urea is about +13°F (-10.6°C).
  • the SCR system is rendered non-operational because the urea catalyst solidifies and cannot be pumped through the hose assemblies into the exhaust stream. Since it is not unusual to encounter temperatures of +13°F (-10.6°C) and below in many northern climes, urea-based SCR systems typically are designed with heated hoses and other types of heaters to maintain the temperature of the urea solution above +13F. SCR systems and components are further described, for example, in commonly- assigned International Patent Application No.
  • PCT/US 11/20452 titled “Electrically- Heated Hose Assembly For Selective Catalytic Reduction (SCR) Systems," filed January 7, 2011, and in the following publications: U.S. Patent Nos. 7,578,321 ; 5,976,475; EP 1,937,946; WO 2010/057819; 2010/02907642008/005829; 2007/032033; and U.S. Pub. No. 2010/0263740. Heated hoses of general types are shown, for example, in U.S. Patent Nos.
  • the present invention is directed to an electrically-heatable tubing, i.e., hose, and fitting assembly. More particularly, the invention is directed to such an assembly for use in transferring a urea, i.e., carbamide, solution in a diesel engine emissions after- treatment system.
  • a urea i.e., carbamide
  • the assembly includes a length of tubing which may be constructed of inner tube or core formed of one or more polymeric layers, with at least one pair of electrical wires, conductive strips, or other electrical conductors being spiral wound around or laid in parallel along the core.
  • the electrical conductors in turn, optionally may be surrounded by an outermost jacket formed of one or more polymeric layers.
  • a heating element having a pair of connection leads such as in the form of an electrically-conductive cage or a flexible film heater strip, then may be applied over the body of the fitting as it protrudes from the end of the hose.
  • a plastic sleeve may be overmolded or otherwise formed over the fitting body to encapsulate the heater element.
  • the present invention accordingly, comprises the design, fabrication, construction, combination of elements, and/or arrangement of parts and steps which are exemplified in the detailed disclosure to follow.
  • conventional push-in fitting types such as SAE J2044, may be heated without the necessity and expense of having to provide specially-designed heated fittings.
  • FIG. 1 is a perspective view of a representative electrically-heatable tubing and fitting assembly according to the present invention
  • FIG. 2 is a perspective view of the tubing of the assembly of Fig. 1 ;
  • FIG. 3 is a cross -sectional view of the tubing of Fig. 2 taken through line 3-3 of
  • Fig. 4 is a side view of the resistive element of the assembly of Fig. 1, such element being in the form of a cage;
  • FIG. 5 is a front view of the cage of Fig. 4;
  • Fig. 6 is a top view of the cage of Fig. 4;
  • Fig. 7 is a perspective view of an alternative heating element for the assembly of Fig. 1 , such element being in the form of a flexible film heat;
  • Fig. 8 is a perspective view of the flexible film heater of Fig. 7 as applied to the body of a fitting of the assembly of Fig. 1.
  • Angles may be designated as "included” as measured relative to surfaces or axes of an element and as defining a space bounded internally within such element therebetween, or otherwise without such designation as being measured relative to surfaces or axes of an element and as defining a space bounded externally by or outside of such element therebetween.
  • measures of the angles stated are as determined relative to a common axis, which axis may be transposed in the figures for purposes of convenience in projecting the vertex of an angle defined between the axis and a surface which otherwise does not extend to the axis.
  • the term "axis" may refer to a line or to a transverse plane through such line as will be apparent from context.
  • the precepts of the electrically-heatable tubing and fitting assembly construction herein involved are described in connection with its configuration as particularly adapted for use in conveying a urea solution in an SCR system or other diesel engine or vehicular emissions after-treatment system. It will be appreciated, however, that aspects of the present invention may find use in other fluid transfer applications requiring heating and/or temperature maintenance such as may be found in the chemical, oil and gas, food processing, medical device, construction and power generation industries. Use within those such other applications therefore should be considered to be expressly within the scope of the present invention.
  • assembly 10 includes a tube, referenced at 12, which extends axially along a central longitudinal axis, 14, to a predetermined length, referenced at "L,” between a first tube end, 16, and a second tube end, referenced in phantom at 18.
  • the length L of tube 12 may range, for example, from about 0.2 m to about 10 m or more.
  • tube 12 which may be as shown of a single, layer construction, or alternatively of a multi-layer construction, has a circumferential exterior surface, 22, and a circumferential interior surface, 24, which defines the inner diameter, referenced at D; (Fig. 3), of tube 12.
  • Tube 12 may be provided as molded, extruded or otherwise formed of a polymeric material such as a polyamide, polyester, polyacetal, ethylene vinyl alcohol, polyoxymethylene, polyolefin, silicone, fluoropolymer, polyvinyl chloride, polyurethane, thermoplastic elastomer, EPDM, natural or synthetic rubber, or a copolymer or blend thereof.
  • a polymeric material such as a polyamide, polyester, polyacetal, ethylene vinyl alcohol, polyoxymethylene, polyolefin, silicone, fluoropolymer, polyvinyl chloride, polyurethane, thermoplastic elastomer, EPDM, natural or synthetic rubber, or a copolymer or blend thereof.
  • a polymeric material such as a polyamide, polyester, polyacetal, ethylene vinyl alcohol, polyoxymethylene, polyolefin, silicone, fluoropolymer, polyvinyl chloride, polyurethane, thermoplastic elastomer, EPDM, natural or synthetic
  • conductors 30 are disposed on the tube exterior surface 22.
  • conductors 30 are provided as electrically conductive, i.e., resistive, strips or stripes, 32a-b, which extend lengthwise along the tube exterior surface 22 in parallel, such as helically or, as shown, linearly on opposite sides of tube 12.
  • electrically conductive, i.e., resistive, strips or stripes, 32a-b which extend lengthwise along the tube exterior surface 22 in parallel, such as helically or, as shown, linearly on opposite sides of tube 12.
  • stripes 32 may be embedded into the tube exterior surface 22, such as by being co-extruded or co-molded with the remainder of tube 12.
  • Stripes 32 may be formed of an inherently-conductive polymer or of a polymeric material, which may be the same as or different than the polymeric material forming the remainder of tube 12, which is rendered electrically-conductive, such as having a resistant of between about 0.1-20 ohms per foot, by virtue of being filled with metal or metal-coated particles or other electrically-conductive filler.
  • such conductors 30 alternatively may be provided as electrical wires formed of copper, aluminum, a stainless or carbon steel alloy, or another metal or metal alloy, and may be sheathed within a plastic or other polymeric coating to provide corrosion resistance and electrical isolation.
  • Wires 34 may be spiral, i.e., helically, wound in parallel pairs around the tube exterior surface 22, or alternatively laid linearly in parallel on opposite sides of tube 12. In the case of a helical winding, wires 34 may be wound at a uniform pitch and pitch angle to ensure a uniform spacing between the turns for more even heat distribution.
  • the amount of heat input into the tube may be adjusted to provide a specified watts per meter rating and/or thaw time.
  • wires 34 alternatively may be interposed between o layers of a conductive, positive temperature coefficient (PTC) polymer so as to function as buss wires in supplying current to the PTC layers in a self-regulating, parallel heating circuit wherein heating output is reduced automatically and proportionately with increasing temperature.
  • Wires 34 and stripes 32 themselves may be formed of PTC materials so as to be self-regulating.
  • Tube 12 optionally may be sheathed within one or more layers of a coaxially- surrounding protective cover or jacket, referenced in phantom at 40 in Fig. 3.
  • jacket 40 may be spray-applied, dip coated, cross-head or co- extruded, or otherwise conventionally extruded, spiral or longitudinally, i.e., "cigarette,” wrapped, or braided over the wires 40 to both protect the wire and to mechanically lock them in place.
  • Each of the layers forming jacket 40 may be formed, independently, of a polymeric material such as a polyamide, polyester, polyacetal, ethylene vinyl alcohol, polyoxymethylene, polyolefin, silicone, fluoropolymer, polyvinyl chloride, polyurethanes, thermoplastic elastomer, EPDM, natural or synthetic rubber, or a copolymer or and blend thereof.
  • a polymeric material such as a polyamide, polyester, polyacetal, ethylene vinyl alcohol, polyoxymethylene, polyolefin, silicone, fluoropolymer, polyvinyl chloride, polyurethanes, thermoplastic elastomer, EPDM, natural or synthetic rubber, or a copolymer or and blend thereof.
  • tube exterior surface 22 may itself be used as the outermost layer in the assembly 10.
  • such striped construction may have a reduced weight and raw material content, provide more efficient and faster heat transfer with reduced thaw times and power input need, offer a smaller tube diameter and overall assembly profile, and exhibit improved flexibility and corrosion and fatigue resistance.
  • a first and a second fitting, 60a-b each is connected to a corresponding end 16 or 18, respectively, of tube 12.
  • Each of the fittings 60 may be straight, as shown, or angled, and independently, may be of an SAE J2044 push-in style as shown or other quick-connect or other type such as compression or crimped, and may include metal or polymeric seals.
  • each of the fittings 60 may have a generally tubular body, 62, which may be formed of a plastic, having a first end portion, 64, and an opposite second end portion, 66.
  • First end portion 64 which may be a barb, nipple, or other male end-form, is inserted into the inner diameter D; of tube 12 (Fig. 3) at a corresponding one of the first or second tube ends 16 or 18 (Fig. 2).
  • fitting second end portion 66 extends axially beyond the corresponding one of the tube ends 16 or 18.
  • a terminus, 68, adjacent second end portion 66 may be of a female coupler end-form for a snap-to-co meet or other push- in connection with an associated nipple connector (not shown).
  • a resistive heating element referenced generally at 70, is provided to surround the fitting second end portion 66.
  • element 70 has a pair of electrical leads, 72a-b, extending axially therefrom.
  • Each of the leads 72a-b has a corresponding distal or terminal first lead end, 74a-b, electrically connected to a corresponding one of the conductors 30a-b, such as the illustrated stripes 32a-b, and an opposite, proximal, second lead end, 76a-b.
  • heating element 70 is constructed as generally tubular cage, 80, formed of an electrically-conductive, i.e., resistive, material such as a metal or an inherently-conductive or conductively-filled plastic.
  • cage 80 may be constructed as being stamped, molded, or otherwise formed as length of an elongate member, 82.
  • Such member 82 may be shaped in the form of the cage 80 as having a forward ring portion, 84, which as shown in Fig. 1 is disposable around the fitting second end portion 66, as a series of semicircular ribs, 86a-d.
  • Such ribs 86 may be connected in pairs 86a-b and 86c-d by cross pieces, commonly referenced at 88, and may be separated on at least one side of the ring portion by a transverse gap, referenced at 90. So shaped, ring portion 84 thus may be expandable circumferentially through gap 90 so as to be receivable around the fitting second end portion 66 either before or after the fitting first end 64 is inserted into the tube end 16 or 18.
  • Ring portion 84 further is shaped as having a pair of legs, 92a-b, each extending transversely from an opposite side of the ring portion 84 with, as shown in Fig. 1, the tube 12 being received therebetween.
  • Each of the legs 92a-b defines a corresponding one of the leads 72 and has a leg end, 94a-b, defining a corresponding one of the first lead ends 74a-b.
  • leg ends 94a-b may be electrically connected to a corresponding one of the stripes 32a-b such as being embedded therein or otherwise as being bonded thereto via ultrasonic, thermal, fusion, or RF welding, or using a conductive adhesive.
  • each fitting 60 and cage 80 may be encased within a plastic overmolding or other type sleeve or cover, 100, which may be formed of the same or different polymeric material as tube 12. Assembly 10 thereupon may be connected to a power supply to provide the power to resistively heat the assembly 10.
  • heating element 70 is provided as a flexible film heater, 110.
  • such heater 110 includes a band, 112, formed of a resistive foil circuit, 113, laminated between two sheets, 114a-b, of a polyimide or other polymeric film.
  • band 1 12 may be bonded, such as by means of a pressure-sensitive adhesive applied to the outside of one of the sheets 114a-b, or otherwise affixed around the fitting second end portion 66 prior to or following the fitting first end portion 64 being inserted into a respective tube end 16 or 18. Thereafter such insertion, each of the first wire ends 118a-b may be electrically connected to a corresponding one of the conductors 30a-b (Fig. 1).
  • a cover 100 (Fig. 1) then may be overmolded or otherwise formed over the fitting second end portion 66 to therein encase the heater band 112 and lead wires 116.
  • Flexible film heaters of the type herein involved are further described, for example, in U.S. Pat. No.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Heating (AREA)
  • Pipe Accessories (AREA)

Abstract

L'invention concerne un ensemble tubage et raccord chauffé à l'électricité. Cet ensemble comprend un tube doté d'une extrémité de tube et d'une surface extérieure. Des premier et second conducteurs électriques (30) espacés radialement sont placés sur la surface extérieure du tube. Un raccord (60) relié à l'extrémité du tube possède un corps tubulaire muni d'une première partie d'extrémité de raccord (64) qui se loge dans l'extrémité du tube et d'une seconde partie d'extrémité de raccord (66) qui s'étend au-delà de l'extrémité du tube. Un élément de chauffage ohmique (70) entoure la seconde partie d'extrémité de raccord (66). Cet élément de chauffage (70) présente une paire de fils (72 a-b) qui partent de cet élément et qui s'étendent axialement, chacun de ces fils possédant une première extrémité de fil qui est connectée électriquement à l'un des deux conducteurs (30 a-b).
PCT/US2011/034585 2010-04-29 2011-04-29 Ensemble tubage et raccord chauffé à l'électricité et destiné à des systèmes de réduction catalytique sélective (scr) WO2011139898A1 (fr)

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US32922210P 2010-04-29 2010-04-29
US61/329,222 2010-04-29
US41154510P 2010-11-09 2010-11-09
US61/411,545 2010-11-09

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014154350A1 (fr) * 2013-03-25 2014-10-02 Rehau Ag + Co Conduite de fluide équipée d'un dispositif chauffe-raccord
WO2015123376A1 (fr) * 2014-02-14 2015-08-20 Parker-Hannifin Corporation Tuyau chauffé et procédé
WO2015144520A1 (fr) * 2014-03-24 2015-10-01 Dsm Ip Assets B.V. Appareil de dosage d'une solution d'urée pour un catalyseur de réduction catalytique sélective (rcs)
FR3106365A1 (fr) * 2020-01-20 2021-07-23 Hutchinson Dispositif de raccordement fluidique et de chauffage de fluide

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US3355572A (en) 1964-07-01 1967-11-28 Moore & Co Samuel Composite electrically heated tubing product
US3522413A (en) 1964-07-01 1970-08-04 Moore & Co Samuel Composite electrically heated tubing product
US3584198A (en) 1968-02-29 1971-06-08 Matsushita Electric Works Ltd Flexible electric surface heater
US4038519A (en) 1973-11-15 1977-07-26 Rhone-Poulenc S.A. Electrically heated flexible tube having temperature measuring probe
US4372279A (en) 1980-11-24 1983-02-08 Paccar Inc. Heated fuel line
US4455474A (en) 1981-11-27 1984-06-19 Nordson Corporation Thermally insulated electrically heated hose for transmitting hot liquids
US4553023A (en) 1981-11-27 1985-11-12 Nordson Corporation Thermally insulated electrically heated hose for transmitting hot liquids
US4815769A (en) 1987-04-02 1989-03-28 Rehau Ag + Co. Connector for heatable hoses and heatable hose assembly
US5428706A (en) 1990-05-17 1995-06-27 Coflexip Flexible tubular conduit with heating means and stiffening means for transporting pressurized fluids
US5511530A (en) 1994-10-24 1996-04-30 Paccar Inc. Modular fuel line heater
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US6738566B2 (en) 2001-07-03 2004-05-18 Nordson Corporation Insulated hose for transmitting hot liquids
US7120354B2 (en) 2000-03-21 2006-10-10 Fisher & Paykel Healthcare Limited Gases delivery conduit
WO2007032034A1 (fr) * 2005-09-16 2007-03-22 Dayco Fluid Technologies S.P.A. Raccord de tuyauterie pour conduite chauffable de systeme de reduction catalytique selective
WO2007032033A1 (fr) 2005-09-16 2007-03-22 Dayco Fluid Technologies S.P.A. Systeme de tuyau multicouche pour l'acheminement et le chauffage de fluide
WO2008005829A2 (fr) 2006-06-30 2008-01-10 Cooper Standard Automotive, Inc. Tube en matière plastique chauffable flexible
EP1937946A1 (fr) 2005-09-16 2008-07-02 Dayco Fluid Technologies S.p.A. Purificateur de gaz d'echappement de vehicule par reduction catalytique selective, a tuyau chauffe
DE102008025299A1 (de) * 2007-06-12 2008-12-18 Contitech Schlauch Gmbh Anschlussvorrichtung für medienführende, elektrisch beheizbare Schläuche
US7578321B2 (en) 2005-10-13 2009-08-25 Ford Global Technologies, Llc Freeze protection for on-board vehicle emissions treatment system
DE102008034238A1 (de) * 2008-07-23 2010-01-28 Contitech Techno-Chemie Gmbh Anschlussvorrichtung für medienführende, elektrisch beheizbare Schläuche
DE202008015289U1 (de) * 2008-11-18 2010-04-08 Voss Automotive Gmbh Leitungsverbinder für Medienleitungen
US20100263740A1 (en) 2007-12-21 2010-10-21 Olav Borgmeier Heatable Media Line
US20100290764A1 (en) 2007-04-26 2010-11-18 Olav Borgmeier Line connector for media lines

Patent Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355572A (en) 1964-07-01 1967-11-28 Moore & Co Samuel Composite electrically heated tubing product
US3522413A (en) 1964-07-01 1970-08-04 Moore & Co Samuel Composite electrically heated tubing product
US3584198A (en) 1968-02-29 1971-06-08 Matsushita Electric Works Ltd Flexible electric surface heater
US4038519A (en) 1973-11-15 1977-07-26 Rhone-Poulenc S.A. Electrically heated flexible tube having temperature measuring probe
US4372279A (en) 1980-11-24 1983-02-08 Paccar Inc. Heated fuel line
US4455474A (en) 1981-11-27 1984-06-19 Nordson Corporation Thermally insulated electrically heated hose for transmitting hot liquids
US4553023A (en) 1981-11-27 1985-11-12 Nordson Corporation Thermally insulated electrically heated hose for transmitting hot liquids
US4815769A (en) 1987-04-02 1989-03-28 Rehau Ag + Co. Connector for heatable hoses and heatable hose assembly
US5428706A (en) 1990-05-17 1995-06-27 Coflexip Flexible tubular conduit with heating means and stiffening means for transporting pressurized fluids
US5511530A (en) 1994-10-24 1996-04-30 Paccar Inc. Modular fuel line heater
US5791377A (en) 1996-07-08 1998-08-11 Yazaki Corporation Electrically heated conduit
US5976475A (en) 1997-04-02 1999-11-02 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
US5910266A (en) 1997-05-28 1999-06-08 The B.F. Goodrich Company Helical electrical heater
US7120354B2 (en) 2000-03-21 2006-10-10 Fisher & Paykel Healthcare Limited Gases delivery conduit
US6738566B2 (en) 2001-07-03 2004-05-18 Nordson Corporation Insulated hose for transmitting hot liquids
US6727481B1 (en) 2003-06-06 2004-04-27 Robert C. Wilds Heated conduit
EP1937946A1 (fr) 2005-09-16 2008-07-02 Dayco Fluid Technologies S.p.A. Purificateur de gaz d'echappement de vehicule par reduction catalytique selective, a tuyau chauffe
WO2007032034A1 (fr) * 2005-09-16 2007-03-22 Dayco Fluid Technologies S.P.A. Raccord de tuyauterie pour conduite chauffable de systeme de reduction catalytique selective
WO2007032033A1 (fr) 2005-09-16 2007-03-22 Dayco Fluid Technologies S.P.A. Systeme de tuyau multicouche pour l'acheminement et le chauffage de fluide
US7578321B2 (en) 2005-10-13 2009-08-25 Ford Global Technologies, Llc Freeze protection for on-board vehicle emissions treatment system
WO2008005829A2 (fr) 2006-06-30 2008-01-10 Cooper Standard Automotive, Inc. Tube en matière plastique chauffable flexible
US20100290764A1 (en) 2007-04-26 2010-11-18 Olav Borgmeier Line connector for media lines
DE102008025299A1 (de) * 2007-06-12 2008-12-18 Contitech Schlauch Gmbh Anschlussvorrichtung für medienführende, elektrisch beheizbare Schläuche
US20100263740A1 (en) 2007-12-21 2010-10-21 Olav Borgmeier Heatable Media Line
DE102008034238A1 (de) * 2008-07-23 2010-01-28 Contitech Techno-Chemie Gmbh Anschlussvorrichtung für medienführende, elektrisch beheizbare Schläuche
DE202008015289U1 (de) * 2008-11-18 2010-04-08 Voss Automotive Gmbh Leitungsverbinder für Medienleitungen
WO2010057819A1 (fr) 2008-11-18 2010-05-27 Voss Automotive Gmbh Raccord de conduite pour conduites de fluides

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014154350A1 (fr) * 2013-03-25 2014-10-02 Rehau Ag + Co Conduite de fluide équipée d'un dispositif chauffe-raccord
WO2015123376A1 (fr) * 2014-02-14 2015-08-20 Parker-Hannifin Corporation Tuyau chauffé et procédé
WO2015144520A1 (fr) * 2014-03-24 2015-10-01 Dsm Ip Assets B.V. Appareil de dosage d'une solution d'urée pour un catalyseur de réduction catalytique sélective (rcs)
CN106133424A (zh) * 2014-03-24 2016-11-16 帝斯曼知识产权资产管理有限公司 用于向选择性催化还原(scr)催化剂中加料脲溶液的装置
FR3106365A1 (fr) * 2020-01-20 2021-07-23 Hutchinson Dispositif de raccordement fluidique et de chauffage de fluide
WO2021148359A1 (fr) * 2020-01-20 2021-07-29 Hutchinson Dispositif de raccordement fluidique et de chauffage de fluide

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