WO2006097765A1 - Heated fluid line - Google Patents
Heated fluid line Download PDFInfo
- Publication number
- WO2006097765A1 WO2006097765A1 PCT/GB2006/001015 GB2006001015W WO2006097765A1 WO 2006097765 A1 WO2006097765 A1 WO 2006097765A1 GB 2006001015 W GB2006001015 W GB 2006001015W WO 2006097765 A1 WO2006097765 A1 WO 2006097765A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid line
- heated fluid
- line according
- inner layer
- layer
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 66
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 5
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 44
- 239000013047 polymeric layer Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000004953 Aliphatic polyamide Substances 0.000 claims description 2
- 229920003231 aliphatic polyamide Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000006229 carbon black Substances 0.000 claims 1
- 238000001125 extrusion Methods 0.000 claims 1
- 229910002804 graphite Inorganic materials 0.000 claims 1
- 239000010439 graphite Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000012815 thermoplastic material Substances 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
- H05B3/58—Heating hoses; Heating collars
-
- 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
-
- 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
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
Definitions
- the invention concerns an electric heatable fluid line with heating by an electro conductive polymer which has positive temperature characteristics of electric resistance.
- PTC positive temperature coefficient
- heating wire can be used without further thermal fuse.
- heating bands are known where a resistance wire is wound around the two connecting wires, thereby connecting the wires at regular intervals.
- an insulating sheathing preferably of a thermoplastic fluoric polymer as FEP, is extruded.
- the insulating sheathing is furthermore covered by a wire netting as mechanical protection and as ground wire of the heating band.
- a further insulating coating is extruded, preferably of a thermoplastic fluoric polymer.
- This so composed heating band is laid parallel to the fluid line or wound around the fluid line and secured to the fluid line in such a way that it conducts the heat well.
- the band is secured to the fluid line by taping with insulating adhesive tape, preferably with a glass fibre fabric tape.
- a heated fluid line characterized by at least one inner layer, forming a tube through which a fluid may flow, a middle layer of electro conductive polymer with a positive temperature characteristic of electrical resistance and electric wires embedded therein, and an outer layer of an insulating material.
- the inner layer of the heated fluid line may be a flexible tube of plastic, preferably thermoplastic, through which the fluid flows. Also possible would be an elastomer. Because of the contact with the fluid the tube needs to be resistant against the fluid. When using the heated fluid line in vehicles or aircrafts a resistance against fuel, oil, coolant etc. is required.
- a preferred application is the use of the present invention for the heating of tubes for urea solutions. Such a use requires the tube to be resistant to urea and ammonia and their solutions like "Ad Blue”. This applies to many thermoplastics, i.e. IXEF, PA, PTFE, PEEK, PPS and PVDF, but also elastomers, i.e. BR, NR and EPDM, which would be suitable for the inner layer.
- a preferred material for the inner layer is polyamide, and particularly preferred is an aliphatic polyamide, most particularly PA 12, of which the number of carbon atoms between the nitrogen atoms in the polymer chain counts 12 links.
- Favourably the inner layer is extruded as a tube.
- a PTC polymeric layer, in which electrical wires are embedded, is provided on this inner layer. It will be appreciated that there may be some layers between the inner layer and the PTC polymeric layer, which could be provided as a diffusion barrier.
- the electric wires can have the shape of a one-core or multi-core wire, but could also be formed like a band.
- the PTC polymeric layer is also extruded, and the electric wires are carried along and included in the extruding process.
- At least one outer layer is sprayed onto the PTC polymeric layer which serves as thermal and electrical insulation. If the outer layer consists of several layers, the thermal and electrical insulation can be taken over by different layers. At least the layer serving for the thermal insulation consists preferably of a temperature resistant, foamed plastic, e.g. Polyethylene or Silicone, which favourably combines good thermal insulation with high flexibility and little weight, and additionally is extrusionable.
- a temperature resistant, foamed plastic e.g. Polyethylene or Silicone
- a heated fluid line is created, which is very flexible, compact and space-saving.
- the heated fluid line is also reliable and durable. Good heat transfer between the PTC polymeric layer is ensured as there is a large contact area between the inner tube and the PTC layer, since there is tight contact between the PTC polymeric layer and the inner tube.
- Thin tubes can be heated reliably according to the present invention. Since the electric wires are carried along the fluid line, a parallel connection of the PTC resistance over the whole length of the wires is provided. If there are air pockets in the fluid to be heated, the PTC polymer regulates the current at this spot. Due to the missing heat transfer to the fluid at the location of the air pocket, the temperature of the PTC polymeric layer in the region of the air pocket will rise. As the temperature of the region of the PTC polymeric layer rises, so does its electrical resistance, causing a reduction in the current flow through the region of the PTC polymeric layer, i.e. the PTC polymeric layer is self-regulating. Therefore, the air pockets are accounted for without overheating the medium locally and/or affecting the rest of the heating of the fluid.
- the fluid line can be cut to any length and provided with connections, since the electric wires are carried along the whole line.
- these onesided connections are preferred to a two-sided connection, which are needed for heating wires, as they are easier to complete.
- the inner layer 1 is a plastic layer formed as a tube, through which a fluid can flow.
- the fluid is a urea solution like "Ad Blue”.
- the inner diameter of the tube is 2 mm, the outer diameter 4 mm.
- the material of the inner layer is ammonia-resistant PA 12.
- the inner layer 1 is coated by a PTC polymeric layer 2, which has the electric wires 3,4 embedded therein.
- the PTC polymeric layer 2 consists of a thermoplastic polymer which is provided with electro-conductive particles and thus the layer is electro-conductive.
- the PTC polymeric layer 2 is extruded on the inner layer 1.
- the PTC polymeric layer 2 forms a tube around the inner layer 1 (in other words the PTC polymeric layer extends fully around the circumference of the inner layer).
- the PTC polymeric layer 2 is coated by an insulation layer 5 which is the outer sheathing and serves both as thermal and electrical insulation.
- the outer diameter of the insulation layer in this example is 10 mm.
- the outer layer 5 is extruded on the PTC polymeric layer 2.
- the dimensions and materials of the heated fluid given in the above- described embodiment are given by way of example only.
- the layers forming the heated fluid line may be of any suitable thickness, and any suitable material.
- the heated fluid line may be any suitable length.
- one or more of the electric wires 3, 4 may be provided with a covering comprising material having a negative temperature coefficient (NTC).
- NTC negative temperature coefficient
- the NTC covering may serve as a cold start limiter .which acts to limit the power dissipated by the heating cable when it is at low temperatures.
- the material for the cold start limiter may be chosen such that the resistance of the negative temperature coefficient material increases substantially when it is below a predetermined minimum temperature.
- the minimum temperature may correspond to the lowest normal operating temperature of the heated fluid line. This limits the current flowing through the cold start limiter when the temperature is at or below the minimum temperature. This is desirable, since without the cold start limiter the resistance of the PTC polymeric layer 2 will be very low at very low temperatures. This could result in dangerously high current being supplied to the PTC polymeric layer 2 when the heated fluid line is in a low temperature environment (for example when the heater is switched on).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
A heated fluid line, characterized by at least one inner layer forming a tube through which a fluid may flow, a middle layer of electro conductive polymer with a positive temperature characteristic of electrical resistance and electric wires embedded therein, and an outer layer of an insulating material.
Description
Heated Fluid Line
The invention concerns an electric heatable fluid line with heating by an electro conductive polymer which has positive temperature characteristics of electric resistance.
It is known to heat a fluid line with a positive temperature coefficient (PTC) heating band, which is fixed to the fluid line on the outside such that a good thermal contact is given. Heating bands which have two connecting wires embedded in a matrix of PTC-polymer are especially preferred.
Because of the matrix of PTC-material, which leads the current from one connecting wire to the other, overheating can be ruled out; that is the heating wire can be used without further thermal fuse. Furthermore heating bands are known where a resistance wire is wound around the two connecting wires, thereby connecting the wires at regular intervals. Onto these so composed heating elements an insulating sheathing, preferably of a thermoplastic fluoric polymer as FEP, is extruded. In the state of the art, the insulating sheathing is furthermore covered by a wire netting as mechanical protection and as ground wire of the heating band. On top of this external sheathing a further insulating coating is extruded, preferably of a thermoplastic fluoric polymer. This so composed heating band is laid parallel to the fluid line or wound around the fluid line and secured to the fluid line in such a way that it conducts the heat well. Generally the band is secured to the fluid line by taping with insulating adhesive tape, preferably with a glass fibre fabric tape.
However this manner of heating fluid line is very complex. Furthermore this design is not suitable to heat very thin and flexible fluid lines as a bending of the fluid line cannot guarantee thermal contact between the band and the fluid line. Furthermore, thin fluid line tubes tend to lie against the heating bands in lines which lead to a bad heat transfer and to hotspots. Especially with thin fluid lines, the heating band needs more space than the fluid line itself.
Thus, it is required to produce a heated fluid line which is inherently safe and therefore particularly suitable to heat temperature sensitive media, and which is also suitable to heat flexible and thin fluid lines.
i
According to the invention there is provided a heated fluid line, characterized by at least one inner layer, forming a tube through which a fluid may flow, a middle layer of electro conductive polymer with a positive temperature characteristic of electrical resistance and electric wires embedded therein, and an outer layer of an insulating material.
The inner layer of the heated fluid line may be a flexible tube of plastic, preferably thermoplastic, through which the fluid flows. Also possible would be an elastomer. Because of the contact with the fluid the tube needs to be resistant against the fluid. When using the heated fluid line in vehicles or aircrafts a resistance against fuel, oil, coolant etc. is required. A preferred application is the use of the present invention for the heating of tubes for urea solutions. Such a use requires the tube to be resistant to urea and ammonia and their solutions like "Ad Blue". This applies to many thermoplastics, i.e. IXEF, PA, PTFE, PEEK, PPS and PVDF, but also elastomers, i.e. BR, NR and EPDM, which would be suitable for the inner layer.
A preferred material for the inner layer is polyamide, and particularly preferred is an aliphatic polyamide, most particularly PA 12, of which the number of carbon atoms between the nitrogen atoms in the polymer chain counts 12 links. Favourably the inner layer is extruded as a tube.
A PTC polymeric layer, in which electrical wires are embedded, is provided on this inner layer. It will be appreciated that there may be some layers between the inner layer and the PTC polymeric layer, which could be provided as a diffusion barrier.
The electric wires can have the shape of a one-core or multi-core wire, but could also be formed like a band.
Preferably the PTC polymeric layer is also extruded, and the electric wires are carried along and included in the extruding process.
At least one outer layer is sprayed onto the PTC polymeric layer which serves as thermal and electrical insulation. If the outer layer consists of several layers, the thermal and electrical insulation can be taken over by different layers. At least the
layer serving for the thermal insulation consists preferably of a temperature resistant, foamed plastic, e.g. Polyethylene or Silicone, which favourably combines good thermal insulation with high flexibility and little weight, and additionally is extrusionable.
So favourably a heated fluid line is created, which is very flexible, compact and space-saving. The heated fluid line is also reliable and durable. Good heat transfer between the PTC polymeric layer is ensured as there is a large contact area between the inner tube and the PTC layer, since there is tight contact between the PTC polymeric layer and the inner tube.
Thin tubes can be heated reliably according to the present invention. Since the electric wires are carried along the fluid line, a parallel connection of the PTC resistance over the whole length of the wires is provided. If there are air pockets in the fluid to be heated, the PTC polymer regulates the current at this spot. Due to the missing heat transfer to the fluid at the location of the air pocket, the temperature of the PTC polymeric layer in the region of the air pocket will rise. As the temperature of the region of the PTC polymeric layer rises, so does its electrical resistance, causing a reduction in the current flow through the region of the PTC polymeric layer, i.e. the PTC polymeric layer is self-regulating. Therefore, the air pockets are accounted for without overheating the medium locally and/or affecting the rest of the heating of the fluid.
Furthermore, preferably the fluid line can be cut to any length and provided with connections, since the electric wires are carried along the whole line. Also these onesided connections are preferred to a two-sided connection, which are needed for heating wires, as they are easier to complete.
An embodiment of a heated fluid line according to the present invention is shown by way of example in Fig. 1.The inner layer 1 is a plastic layer formed as a tube, through which a fluid can flow. In this case the fluid is a urea solution like "Ad Blue". The inner diameter of the tube is 2 mm, the outer diameter 4 mm. The material of the inner layer is ammonia-resistant PA 12. The inner layer 1 is coated by a PTC polymeric layer 2, which has the electric wires 3,4 embedded therein. The PTC polymeric layer 2 consists of a thermoplastic polymer which is provided with electro-conductive particles and thus the layer is electro-conductive. The PTC polymeric layer 2 is
extruded on the inner layer 1. The PTC polymeric layer 2 forms a tube around the inner layer 1 (in other words the PTC polymeric layer extends fully around the circumference of the inner layer).
The PTC polymeric layer 2 is coated by an insulation layer 5 which is the outer sheathing and serves both as thermal and electrical insulation. The outer diameter of the insulation layer in this example is 10 mm. The outer layer 5 is extruded on the PTC polymeric layer 2.
It will be appreciated by the skilled person that the above embodiment has been given by way of example only, and that various modications may be made to the embodiment without detracting from the invention as defined by the claims, which follow.
For example, the dimensions and materials of the heated fluid given in the above- described embodiment are given by way of example only. The layers forming the heated fluid line may be of any suitable thickness, and any suitable material. The heated fluid line may be any suitable length.
For instance, one or more of the electric wires 3, 4 may be provided with a covering comprising material having a negative temperature coefficient (NTC). The NTC covering may serve as a cold start limiter .which acts to limit the power dissipated by the heating cable when it is at low temperatures.
The material for the cold start limiter may be chosen such that the resistance of the negative temperature coefficient material increases substantially when it is below a predetermined minimum temperature. The minimum temperature may correspond to the lowest normal operating temperature of the heated fluid line. This limits the current flowing through the cold start limiter when the temperature is at or below the minimum temperature. This is desirable, since without the cold start limiter the resistance of the PTC polymeric layer 2 will be very low at very low temperatures. This could result in dangerously high current being supplied to the PTC polymeric layer 2 when the heated fluid line is in a low temperature environment (for example when the heater is switched on).
Claims
1. A heated fluid line, characterized by
- at least one inner layer, forming a tube through which a fluid may flow;
a middle layer of electro conductive polymer with a positive temperature characteristic of electrical resistance and electric wires embedded therein; and
an outer layer of an insulating material.
2. A heated fluid line according to claim 1 , characterized by an inner layer consisting of a thermoplastic.
3. A heated fluid line according to claim 1, characterized by an inner layer consisting of a Polyamide, particularly an aliphatic Polyamide as PA 12.
4. A heated fluid line according to at least one of the claims 1-3, characterized by an inner layer consisting of several sub-layers.
5. A heated fluid line according to claim 4, characterized by a sub-layer consisting of Polyamide, particularly PA 12.
6. A heated fluid line according to claim 1 , characterized by the electro conductive polymer with positive temperature characteristic of electric resistance consisting of thermoplastic material.
7. A heated fluid line according to claim 6, characterized by the positive temperature coefficient polymer consisting of a mixture of thermoplastic polymer and added particles, the added particles being from a group comprising: carbon black, graphite and metal powder.
8. A heated fluid line according to claim 1 , characterized by the embedded electric wires being parallel to the fluid line.
9. A heated fluid line according to claim 1, characterized by the outer layer consisting of a foamed material.
10. A heated fluid line according to claim 1 or 9, characterized by the outer layer consisting of a polyethylene or silicone.
11. A heated fluid line according to at least one of claims 1 , 9 or 10, characterized by the outer layer consisting of several sub-layers.
12. A heated fluid line according to claim 11 , characterized by at least one outer sublayer consisting of a foamed material.
13. A heated fluid line according to claim 11 , characterized by at least one outer sublayer consisting of polyethylene or silicone.
14. A heated fluid line according to at least one above mentioned claim, characterized by an inner diameter of the inner layer of 0,5 - 4 mm, particularly 1 - 3 mm.
15. A heated fluid line according to at least one above mentioned claim, characterized by at least one of the embedded electric wires being provided with a covering comprising a material having a negative temperature coefficient of electrical resistance.
16. Application of a heated fluid line according to at least one of claims 1 - 15 for the heating of fluid lines in a vehicle or aircraft.
17. Application of a heated fluid line according to at least one of claims 1 - 15 for the heating of a urea solution fluid line.
18. Process for the production of a heated fluid line according to at least one of claims 1 - 14, characterized by the inner layer(s) being produced by extrusion.
19. Process for the production of a heated fluid line according to at least one of claims 1 - 14, characterized by the PTC polymeric layer being extruded onto the inner layer(s) while embedding the electric wires.
20. Process for the production of a heated fluid line according to at least one of claims 1 - 14, characterized by the outer layer(s) being extruded onto the PTC polymeric layer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005004602.7 | 2005-03-18 | ||
DE200520004602 DE202005004602U1 (en) | 2005-03-18 | 2005-03-18 | Heated pipe for liquids comprises an plastic inner hose, a middle layer of an electrically conductive polymer with embedded wires, and an outer insulating layer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006097765A1 true WO2006097765A1 (en) | 2006-09-21 |
Family
ID=34802215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2006/001015 WO2006097765A1 (en) | 2005-03-18 | 2006-03-20 | Heated fluid line |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE202005004602U1 (en) |
WO (1) | WO2006097765A1 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2476698A (en) * | 2009-12-30 | 2011-07-06 | Aflex Hose Ltd | Anti-static liner tube |
CN102348920A (en) * | 2009-02-13 | 2012-02-08 | 盖茨公司 | Heated fluid conduits, systems and methods |
EP2518383A1 (en) | 2011-04-29 | 2012-10-31 | Evonik Degussa GmbH | Temperature-controllable pipe for offshore applications |
EP2520839A2 (en) | 2011-05-06 | 2012-11-07 | Evonik Degussa GmbH | Temperable pipe for offshore applications |
US8307637B2 (en) * | 2005-09-16 | 2012-11-13 | Dayco Fluid Technologies S.P.A. | Device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping |
WO2013137745A1 (en) * | 2012-03-14 | 2013-09-19 | Purapipe As | Multilayer pipeline in a polymer material, device for manufacture of the multilayer pipeline and a method for manufacturing the multilayer pipeline |
DE102012208020A1 (en) | 2012-05-14 | 2013-11-14 | Evonik Industries Ag | Method for producing a heatable tube |
CN103398262A (en) * | 2013-07-24 | 2013-11-20 | 苏州市润凯汽车配件制造有限公司 | Pipeline heater |
JP2014500448A (en) * | 2010-11-18 | 2014-01-09 | フォス・アウトモーティヴ・ゲー・エム・ベー・ハー | A ready-made medium line that can be heated electrically and a method of manufacturing the medium line |
JP2014503766A (en) * | 2010-12-08 | 2014-02-13 | フォス・アウトモーティヴ・ゲー・エム・ベー・ハー | Fluid heating conduit, use of fluid heating conduit, and method of manufacturing fluid heating conduit |
CN103608170A (en) * | 2011-04-19 | 2014-02-26 | 福士汽车配套部件责任有限公司 | Multiple-layer electrically heatable medium line |
CN105072721A (en) * | 2015-08-06 | 2015-11-18 | 浙江大铭新材料股份有限公司 | Novel positive temperature coefficient (PTC) heating plastic tube and fabrication method thereof |
EP3069866A1 (en) | 2015-03-20 | 2016-09-21 | Evonik Degussa GmbH | Heatable tube |
WO2017114334A1 (en) * | 2015-12-29 | 2017-07-06 | 淄博环能海臣环保技术服务有限公司 | Composite ptc electrically-conductive polymer material film self-thermal control and thermally insulated plastic pipe |
US10183126B1 (en) | 2017-07-27 | 2019-01-22 | Scott Norman | Heated patient tube assembly |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005037183B3 (en) * | 2005-08-06 | 2007-05-10 | Rasmussen Gmbh | Heatable fluid line e.g. for motor vehicle, has pipe, heating resistor and two electrical inlets for heating resistor which are arranged parallel to pipe |
US7919733B2 (en) * | 2005-08-09 | 2011-04-05 | Watlow Electric Manufacturing Company | Modular heater systems |
US8809751B2 (en) | 2005-08-09 | 2014-08-19 | Watlow Electric Manufacturing Company | Modular heater system |
US7626146B2 (en) | 2005-08-09 | 2009-12-01 | Watlow Electric Manufacturing Company | Modular heater systems |
US7964826B2 (en) | 2005-08-09 | 2011-06-21 | Watlow Electric Manufacturing Company | Modular heater systems |
EP1931905B1 (en) * | 2005-09-16 | 2012-08-08 | DYTECH - Dynamic Fluid Technologies S.p.A. | Multi-layer piping for conveying and heating a fluid |
DE602007009676D1 (en) | 2006-06-08 | 2010-11-18 | SYSTEM FOR STORING MOTOR GAS ADDITIVES | |
DE102006051413B4 (en) | 2006-10-27 | 2009-01-02 | Norma Germany Gmbh | Electrically heated fluid line |
ES2682301T3 (en) * | 2007-04-26 | 2018-09-19 | Voss Automotive Gmbh | Pipe connector for fluid pipes |
EP1985908B2 (en) * | 2007-04-26 | 2018-09-19 | Voss Automotive GmbH | Circuit connector for fluid transfers |
DE202007007849U1 (en) * | 2007-06-01 | 2008-10-09 | Rehau Ag + Co | System for conducting and tempering a urea-water solution |
DE202007015036U1 (en) | 2007-10-26 | 2009-03-12 | Voss Automotive Gmbh | Cable connector and cable set for fluidic media |
DE202007015763U1 (en) * | 2007-11-09 | 2009-03-26 | Mann+Hummel Gmbh | Nozzle tube for windscreen washer systems of motor vehicles |
DE102007058721B4 (en) * | 2007-12-06 | 2014-02-13 | Veritas Ag | Multilayer pipe |
DE202007018089U1 (en) | 2007-12-21 | 2009-05-07 | Voss Automotive Gmbh | Heatable media line |
EP2222995B1 (en) | 2007-12-21 | 2014-12-10 | Voss Automotive GmbH | Line connector for media lines and ready-made media line with at least one such line connector |
US9651185B2 (en) | 2008-03-19 | 2017-05-16 | Voss Automotive Gmbh | Line connector for media lines |
DE102008018658A1 (en) | 2008-04-11 | 2009-10-15 | A. Kayser Automotive Systems Gmbh | Line element for fluid, has heating medium, where specific pipe is provided for fluid guidance, and heating medium is formed by electrical conductors that are merged into conductive material |
DE202008014092U1 (en) * | 2008-10-23 | 2010-03-11 | Rehau Ag + Co | pipe |
DE102008055891A1 (en) | 2008-11-05 | 2010-05-12 | Masterflex Ag | Flexible, electrically heated hose |
DE202008014893U1 (en) * | 2008-11-10 | 2010-04-15 | Rehau Ag + Co | Thermally insulated, heated and flexible fluid line |
DE102009022995A1 (en) * | 2009-05-28 | 2010-12-02 | Rehau Ag + Co. | Heatable pipe, particularly for motor vehicle for transporting urea-water-solution, has inner tube formed of polymer material and sheathing surrounding inner tube, and electric heater is provided for heating medium present in inner tube |
DE202009016368U1 (en) * | 2009-12-02 | 2011-04-14 | Eltherm Gmbh | Electrically heated hose |
DE102009058586B4 (en) | 2009-12-17 | 2021-09-16 | Bayerische Motoren Werke Aktiengesellschaft | Line arrangement |
DE102010010929A1 (en) * | 2010-03-10 | 2011-09-15 | Airbus Operations Gmbh | Protection of water pipes against frost |
CN101799116B (en) * | 2010-03-16 | 2013-04-17 | 河北亚大汽车塑料制品有限公司 | Anti-freezing pipeline for transporting liquid |
DE102010019777B4 (en) | 2010-05-07 | 2019-08-22 | Airbus Operations Gmbh | Aircraft with a fluid line system |
DE102010034066A1 (en) * | 2010-08-12 | 2012-02-16 | Diehl Aerospace Gmbh | Supply conduit for conducting fresh air and circulating air to air conditioning system in airplane, has current and/or data lines integrated at wall in hollow section of airline and arranged in cavity of hollow section |
DE102011014201B3 (en) * | 2011-03-16 | 2012-08-09 | Rehau Ag + Co. | Medical tubing for preventing unwanted chewing movements of patient while sleeping, has contacting regions that contact to allow current flow for driving electrical device so that electrical device is vibrated, during chewing motion |
DE102011053906A1 (en) * | 2011-09-23 | 2013-03-28 | Visteon Global Technologies, Inc. | Dehumidifying unit and method |
DE102012025014A1 (en) * | 2012-12-20 | 2014-06-26 | Voss Automotive Gmbh | Medium heatable pipe i.e. fluid heatable pipe, for vehicle, has material-locking connection provided such that permanent fixing of heating elements on fluid line is ensured, where elements are releasable from layer of pipe wall if necessary |
DE102014018372A1 (en) | 2013-12-13 | 2015-06-18 | Voss Automotive Gmbh | Prefabricated heatable media line and method for its production |
CN106133424A (en) * | 2014-03-24 | 2016-11-16 | 帝斯曼知识产权资产管理有限公司 | Device for the urea solution that feeds in SCR (SCR) catalyst |
DE102014010647A1 (en) * | 2014-07-17 | 2016-01-21 | Daimler Ag | Media line and arrangement for heating a medium |
DE102014115445A1 (en) * | 2014-10-23 | 2016-04-28 | Rehau Ag + Co | Use of a media line |
EP3086011B1 (en) | 2015-04-21 | 2019-07-31 | Airbus Operations GmbH | Double-walled pipe with integrated heating capability for an aircraft or spacecraft |
US10557584B2 (en) | 2015-12-16 | 2020-02-11 | Watlow Electric Manufacturing Company | Modular heater systems |
GB201603893D0 (en) * | 2016-03-07 | 2016-04-20 | Aktiv Solutions Ltd | Vehicle catalyst liquid additive transport arrangement |
DE102016222240B4 (en) | 2016-11-14 | 2019-02-07 | Contitech Schlauch Gmbh | Heatable hollow body, in particular heatable hose |
DE202017106495U1 (en) | 2017-10-26 | 2017-11-13 | Elmeric Gmbh | Heatable flexible hose with applied heating element |
DE102017125104A1 (en) | 2017-10-26 | 2019-05-02 | Elmeric Gmbh | Heatable flexible hose with applied heating element |
DE102017221542A1 (en) * | 2017-11-30 | 2019-06-06 | Contitech Schlauch Gmbh | Hollow body, preferably cylindrical hollow body, particularly preferably hose |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4874925A (en) * | 1987-06-01 | 1989-10-17 | Dickenson Wilk A | Electrically heated hose assembly for conveying electrically conductive liquids |
-
2005
- 2005-03-18 DE DE200520004602 patent/DE202005004602U1/en not_active Expired - Lifetime
-
2006
- 2006-03-20 WO PCT/GB2006/001015 patent/WO2006097765A1/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4874925A (en) * | 1987-06-01 | 1989-10-17 | Dickenson Wilk A | Electrically heated hose assembly for conveying electrically conductive liquids |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8307637B2 (en) * | 2005-09-16 | 2012-11-13 | Dayco Fluid Technologies S.P.A. | Device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping |
CN102348920A (en) * | 2009-02-13 | 2012-02-08 | 盖茨公司 | Heated fluid conduits, systems and methods |
GB2476698B (en) * | 2009-12-30 | 2012-10-31 | Aflex Hose Ltd | Anti-static liner tube |
GB2476698A (en) * | 2009-12-30 | 2011-07-06 | Aflex Hose Ltd | Anti-static liner tube |
US9644776B2 (en) | 2010-11-18 | 2017-05-09 | Voss Automotive Gmbh | Prefabricated electrically heatable media line and method for producing a media line of this kind |
JP2014500448A (en) * | 2010-11-18 | 2014-01-09 | フォス・アウトモーティヴ・ゲー・エム・ベー・ハー | A ready-made medium line that can be heated electrically and a method of manufacturing the medium line |
JP2014503766A (en) * | 2010-12-08 | 2014-02-13 | フォス・アウトモーティヴ・ゲー・エム・ベー・ハー | Fluid heating conduit, use of fluid heating conduit, and method of manufacturing fluid heating conduit |
US9360147B2 (en) | 2010-12-08 | 2016-06-07 | Voss Automotive Gmbh | Heatable fluid line, use thereof and method for producing same |
CN103608170A (en) * | 2011-04-19 | 2014-02-26 | 福士汽车配套部件责任有限公司 | Multiple-layer electrically heatable medium line |
DE102011017811A1 (en) | 2011-04-29 | 2012-10-31 | Evonik Degussa Gmbh | Temperable pipeline for offshore applications |
US9151418B2 (en) | 2011-04-29 | 2015-10-06 | Evonik Degussa Gmbh | Temperature-controllable pipe |
EP2518383A1 (en) | 2011-04-29 | 2012-10-31 | Evonik Degussa GmbH | Temperature-controllable pipe for offshore applications |
JP2012233581A (en) * | 2011-05-06 | 2012-11-29 | Evonik Degussa Gmbh | Temperature-controllable pipe suitable for offshore applications |
US9133965B2 (en) | 2011-05-06 | 2015-09-15 | Evonik Degussa Gmbh | Temperature-controllable pipe suitable for offshore applications |
DE102011075383A1 (en) | 2011-05-06 | 2012-11-08 | Evonik Degussa Gmbh | Temperable pipeline for offshore applications |
EP2520839A2 (en) | 2011-05-06 | 2012-11-07 | Evonik Degussa GmbH | Temperable pipe for offshore applications |
EA028688B1 (en) * | 2012-03-14 | 2017-12-29 | Пьюрэпайп Холдинг Лтд. | Multilayer polymer pipeline, device and method for manufacturing such multilayer pipeline |
WO2013137745A1 (en) * | 2012-03-14 | 2013-09-19 | Purapipe As | Multilayer pipeline in a polymer material, device for manufacture of the multilayer pipeline and a method for manufacturing the multilayer pipeline |
JP2014005936A (en) * | 2012-05-14 | 2014-01-16 | Evonik Industries Ag | Method for manufacturing heatable pipe |
US10094505B2 (en) | 2012-05-14 | 2018-10-09 | Evonik Degussa Gmbh | Heatable line pipe and a method for producing the heatable pipe |
CN103448250A (en) * | 2012-05-14 | 2013-12-18 | 赢创工业集团股份有限公司 | Method for producing a heatable pipe |
KR20130127382A (en) * | 2012-05-14 | 2013-11-22 | 에보닉 인두스트리에스 아게 | Method for producing a heatable pipe |
KR101979031B1 (en) | 2012-05-14 | 2019-05-15 | 에보니크 데구사 게엠베하 | Method for producing a heatable pipe |
DE102012208020A1 (en) | 2012-05-14 | 2013-11-14 | Evonik Industries Ag | Method for producing a heatable tube |
EP2664835A1 (en) | 2012-05-14 | 2013-11-20 | Evonik Industries AG | Method for producing a heatable pipe, heatable pipe and use thereof |
CN103398262A (en) * | 2013-07-24 | 2013-11-20 | 苏州市润凯汽车配件制造有限公司 | Pipeline heater |
CN103398262B (en) * | 2013-07-24 | 2015-09-09 | 苏州市润凯汽车配件制造有限公司 | A kind of pipeline heater |
EP3069866A1 (en) | 2015-03-20 | 2016-09-21 | Evonik Degussa GmbH | Heatable tube |
US10139022B2 (en) | 2015-03-20 | 2018-11-27 | Evonik Degussa Gmbh | Heatable pipe |
CN105072721A (en) * | 2015-08-06 | 2015-11-18 | 浙江大铭新材料股份有限公司 | Novel positive temperature coefficient (PTC) heating plastic tube and fabrication method thereof |
WO2017114334A1 (en) * | 2015-12-29 | 2017-07-06 | 淄博环能海臣环保技术服务有限公司 | Composite ptc electrically-conductive polymer material film self-thermal control and thermally insulated plastic pipe |
US10183126B1 (en) | 2017-07-27 | 2019-01-22 | Scott Norman | Heated patient tube assembly |
WO2019023047A1 (en) * | 2017-07-27 | 2019-01-31 | Scott Norman | Heated patient tube assembly |
CN111194231A (en) * | 2017-07-27 | 2020-05-22 | 新生儿产品集团公司 | Heated patient tube assembly |
Also Published As
Publication number | Publication date |
---|---|
DE202005004602U1 (en) | 2005-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006097765A1 (en) | Heated fluid line | |
US8592731B2 (en) | Flexible heated hose and method of manufacture | |
US4922083A (en) | Flexible, elongated positive temperature coefficient heating assembly and method | |
US20140110004A1 (en) | Multiple-layer electrically heatable medium line | |
US4543474A (en) | Layered self-regulating heating article | |
FI65522B (en) | SKIKTAT SJAELVREGLERANDE UPPVAERMNINGSFOEREMAOL | |
US4330703A (en) | Layered self-regulating heating article | |
CN101331794A (en) | Flat heating element | |
EP1726859B1 (en) | Resin tube for fuel piping | |
US20080298788A1 (en) | Heated hose apparatus and method | |
US10935009B2 (en) | Artificial muscle actuators | |
US20130336643A1 (en) | Line connector for media lines | |
WO2008005829A2 (en) | Flexible heatable plastic tube | |
EP0312204A2 (en) | Conductive polymeric conduit heater | |
US20050016757A1 (en) | Electric heating cable or tape having insulating sheaths that are arranged in a layered structure | |
SK11342000A3 (en) | Flat heating element and use of flat heating elements | |
US9651185B2 (en) | Line connector for media lines | |
CN111050437B (en) | Three-dimensional printing type heating positive temperature coefficient tube | |
CA2081029C (en) | Elongated electrical resistance heater | |
EP3661323B1 (en) | Cord-shaped heater, sheet-like heater, and sheet-like heater production method | |
KR20190018600A (en) | Battery Heat-retaining heating element and Manufacturing method thereof using Carbon fiber | |
US4910391A (en) | Electrical heating element for use in a personal comfort device | |
US6169276B1 (en) | Electrical heating apparatus | |
JP7417880B2 (en) | coated wire | |
EP0930804B1 (en) | Heating cable |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
NENP | Non-entry into the national phase |
Ref country code: RU |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06726449 Country of ref document: EP Kind code of ref document: A1 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 6726449 Country of ref document: EP |