Multiple-layer electrically heatable medium line
AssigneeVOSS Automotive GmbH
InventorsJörg Westmeier, Otfried Schwarzkopf, Thomas Schüler
Life of this patent
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Abstract
In a multiple-layer electrically heatable medium line having a medium-resistant inner layer, a heating layer which is provided with at least two conductors or heating conductors, and an outer layer, the layers of the medium line are single-layer or multiple-layer, and the conductors or heating conductors are embedded within the heating layer such that they are coiled in the longitudinal direction of the medium line, in a radially and/or axially predefined position.
Claims20
A multi-layer electrically heatable medium line, comprising a medium-resistant inner layer, a heating layer comprising at least two conductors or heating conductors and an outer layer,
- wherein the layers of the medium line are single-layer or multi-layer and the conductors or heating conductors, in a longitudinal direction of the medium line, are embedded coiled in a radially and/or axially predetermined position within the heating layer.
A method for manufacturing a multi-layer electrically heatable medium line wherein a single-layer or multi-layer inner layer is manufactured, comprising the steps of:
- applying a first layer of a heating layer to the inner layer for arranging conductors or heating conductors in a defined position in a wall of the medium line,
- applying at least two conductors or heating conductors to this first layer of the heating layer,
- applying a second layer of the heating layer, wherein the conductors or heating conductors (30, 31) are embedded into the second layer of the heating layer, and
- applying a single-layer or multi-layer outer layer to the second layer or at least one further layer of the heating layer.
The method for manufacturing a single-layer or multi-layer electrically heatable medium line wherein a single-layer or multi-layer inner layer is manufactured, comprising the steps of:
- applying a heating layer to the inner layer as a single- or multi-layer layer,
- locally heating or heating until partially melting the heating layer,
- introducing at least two conductors or heating conductors in a coiled arrangement across a longitudinal extension of the medium line, and
- applying a single-layer or multi-layer outer layer to the heating layer.
Dependencies are inferred from the claim text.