US2009238547A1PendingUtilityA1

Heatable fluid line with a heating power which can be set

48
Assignee: VOSS AUTOMOTIVE GMBHPriority: Mar 19, 2008Filed: Mar 19, 2009Published: Sep 24, 2009
Est. expiryMar 19, 2028(~1.6 yrs left)· nominal 20-yr term from priority
Inventors:Olav Borgmeier
H05B 3/56F16L 53/38
48
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Claims

Abstract

The present invention relates to a fluid line for conducting and heating a medium, having a heating line comprising a conduit and an electrical heating element which is assigned to the conduit. In this case, a particular heating power per unit length can be set, the heating element comprising at least three heating conductors which run along the conduit. The ends of the heating conductors are connected to one another and can be connected to a supply voltage in such a manner that a plurality of heating conductors are connected in series and/or in parallel such that, for a particular supply voltage, the heating power of the fluid line is determined by the total resistance of the heating conductors.

Claims

exact text as granted — not AI-modified
1 . A fluid line for conducting and heating a medium, having a heating line comprising a conduit and an electrical heating element which is assigned to the conduit, a particular heating power per unit length being able to be set,
 wherein the heating element comprises at least three heating conductors which run along the conduit, and the ends of the heating conductors are connected to one another and can be connected to a supply voltage in such a manner that a plurality of heating conductors are connected in series, connected in parallel, or a combination of being connected in parallel and in series, such that, for a particular supply voltage, the heating power of the fluid line is determined by the total resistance of the heating conductors.   
     
     
         2 . The fluid line according to  claim 1 ,
 wherein the heating conductors comprise individual metal wires which are provided with electrical insulation.   
     
     
         3 . The fluid line according to  claim 1 ,
 wherein the electrical heating conductors comprise individual bands with an electrically conductive coating.   
     
     
         4 . The fluid line according to  claim 1 ,
 wherein the electrical heating conductors comprise electrically conductive layers, which are applied to the conduit.   
     
     
         5 . The fluid line according to  claim 1 ,
 wherein the electrical heating conductors are integrated inside the wall of the conduit.   
     
     
         6 . The fluid line according to  claim 2 ,
 wherein the heating conductors run inside the conduit.   
     
     
         7 . The fluid line according to  claim 2 ,
 wherein at least one of the heating conductors has an electrical resistance which differs from the electrical resistance of the other heating conductors.   
     
     
         8 . The fluid line according to  claim 2 ,
 wherein there are four heating conductors.   
     
     
         9 . The fluid line according to  claim 8 ,
 wherein the heating conductors all have a different electrical resistance.   
     
     
         10 . The fluid line according to  claim 7 ,
 wherein the different electrical resistance of the heating conductors results from a different cross-sectional size of the heating conductors.   
     
     
         11 . The fluid line according to  claim 7 ,
 wherein the heating conductors with different resistances are each identified using a different color.   
     
     
         12 . The fluid line according to  claim 1 ,
 wherein the heating conductors run around the conduit in the form of a spiral.   
     
     
         13 . The fluid line according to  claim 1 ,
 wherein the heating conductors run parallel to the longitudinal axis of the conduit.   
     
     
         14 . The fluid line according to  claim 1 ,
 wherein the heating conductors run on the conduit in meandering fashion.   
     
     
         15 . The fluid line according to  claim 2 ,
 wherein the heating conductors run in one layer beside one another or in a plurality of layers above one another.   
     
     
         16 . The fluid line according to  claim 2 ,
 wherein, in addition to the heating conductors, at least one electrical connecting line for the voltage supply runs in the longitudinal direction of the conduit.   
     
     
         17 . The fluid line according to  claim 2 ,
 wherein the conduit with the heating conductors is surrounded by an external protective layer.   
     
     
         18 . The fluid line according to  claim 2 ,
 wherein the conduit with the heating conductors is surrounded by an external protective sleeve.   
     
     
         19 . The fluid line according to  claim 2 ,
 wherein the heating conductors comprise resistance conductors.   
     
     
         20 . The fluid line according to  claim 4 ,
 wherein the conductive layers are in the form of strips.   
     
     
         21 . The fluid line according to  claim 12 ,
 wherein the heating conductors run around the conduit with the same pitch.   
     
     
         22 . The fluid line according to  claim 18 ,
 wherein the external protective sleeve comprises a corrugated pipe.

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