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Electric heating system for a fluid line system

A liquid pipeline and heating system technology, applied in the direction of electrical connection combined with liquid connection, ohmic resistance heating, pipeline heating/cooling, etc., can solve the problems of reduced mechanical strength, small heating resistance, and unreliable manufacturing

Active Publication Date: 2013-08-07
VOSS AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem with these heating systems is that the lengths of the liquid lines within the piping system are often very different, which leads to differences in the effective heating resistance of the heating elements and the corresponding heating power
Especially if the liquid line is short, e.g. its length is less than 500 mm, then the heating element, which is helically wound on the line, for example, may also be short, resulting in a heating resistance that is too small
Although it is possible to increase the resistance by using a heating element with a reduced cross-sectional area, this may cause mechanical problems
For example, plug-in connectors (especially corrugated-connectors) for heating elements may not be reliably manufactured due to the small cross-section and due to the resulting reduced mechanical strength

Method used

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  • Electric heating system for a fluid line system
  • Electric heating system for a fluid line system
  • Electric heating system for a fluid line system

Examples

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Embodiment Construction

[0037] figure 1 A liquid line system 1 is shown as an example, which comprises a line bundle with a liquid line 2 and line connectors 4 , 6 connected at both ends to the line 2 and an electric heating element. A resistance heating element R is used as heating element, that is to say the liquid line 2 has an electric heating element R L , and preferably each line connector 4, 6 has a heating element R v1 or R v2 as a heating element. All heating elements (electrical heating resistors) can preferably comprise at least one coil wound with at least one heating wire 8 (see image 3 as well as Figure 13 and 14 ). Advantageously, the heating elements R of the line connectors 4, 6 v1 or R v2 Each is covered with a housing 10, and the liquid line 2 has a surrounding heating element R L The outer sheath 12 is, for example, bellows-shaped.

[0038]In the interior of a motor vehicle and preferably in the case of an SCR exhaust gas treatment system, a plurality of individual pip...

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Abstract

The heating system comprises a fluid line (2) with an electric heating element (R-L), where an operating voltage is reduced by comparing with a supply voltage (U). The heating element is upstream in series to a dropping resistor. The heating element comprises a heating coil material helically running around the fluid line. A heating wire runs helically around a core of the heating coil material. The heating element comprises two series-connected heating conductors.

Description

technical field [0001] The invention relates to a heating system, in particular for a fluid line system in a motor vehicle, wherein at least one of the fluid lines is assigned at least one electric heating element, the heating element being supplied with a certain heating power to the fluid line. Operating Voltage. Background technique [0002] For background technology, please refer to documents such as DE41 35 082 C1, WO 2007 / 073286 A1 and EP1985 908 A1. [0003] Heatable fluid line systems are frequently used in motor vehicles in particular for media which, due to their freezing point, tend to freeze at relatively high ambient temperatures. Some functions may be impaired due to media freezing. This is the case, for example, for the water pipes of lathe scrubbers and, of course, especially for the pipes of aqueous urea solutions, which are used together with so-called SCR catalysts (SCR: Selective Catalytic Reduction) as fuel for diesel engines. NOX reducing agent (NOX:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L53/00F16L53/38
CPCH05B3/46H05B2203/021F01N2610/10F16L53/008F01N2610/14F01N2610/02F16L53/38H01R13/005F16L25/01H05B1/0244
Inventor 奥拉夫·博格迈尔托比亚斯·艾特莎德赖纳·米特雷尔托马斯·许勒尔
Owner VOSS AUTOMOTIVE