OIL-WATER HEAT EXCHANGER, IN PARTICULAR FOR THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

Abstract

The invention relates to an oil-water heat exchanger, in particular for connection to an internal combustion engine of a motor vehicle, comprising at least one electric heating coating (13) which is applied to an outer side and/or in the interior of the heat exchanger.

Claims

1. An oil-water heat exchanger for connection to an internal combustion engine of a motor vehicle, comprising at least one electric heating coating which is applied to an outer side and/or in the interior of the heat exchanger.

2. The oil-water heat exchanger according to claim 1, wherein the heating coating is applied directly to the oil-water heat exchanger or is applied indirectly to the oil-water heat exchanger over an insulating layer, wherein the insulating layer is provided by passivation, in particular oxidization or anodization, of the underlying surface.

3. The oil-water heat exchanger according to claim 1, wherein the heating coating is designed for operation in the low-voltage range, the low voltage range being one of 12 volts, 24 volts or 48 volts.

4. The oil-water heat exchanger according to claim 1, wherein the heating coating is arranged on a heat exchanger cover of the oil-water heat exchanger.

5. The oil-water heat exchanger according to claim 1, wherein the heating coating is formed as a continuous layer.

6. The oil-water heat exchanger according to claim 1, wherein the heating coating is formed as a structured layer.

7. The oil-water heat exchanger according to claim 1, wherein the heating coating has a height between at least 5 μm and at most 30 μm and/or a conductor track defined by the heating coating is at least 3 mm.

8. The oil-water heat exchanger according to claim 1, wherein a protective coating is applied over the heating coating, or the heating coating defines an outer side of the oil-water heat exchanger.

9. The oil-water heat exchanger according to claim 1, wherein the oil-water heat exchanger has multiple modules, in particular multiple trough elements, wherein at least one heating coating is arranged between two modules, in particular trough elements.

10. The oil-water heat exchanger according to claim 1, wherein a turbulator with an electric heating coating is provided.

11. A method for producing an oil-water heat exchanger, in particular according to claim 1, comprising the steps: providing an oil-water heat exchanger, and applying an electric heating coating to the oil-water heat exchanger.

12. Use of an oil-water heat exchanger according to claim 1, as an oil-water heat exchanger in a motor vehicle for the internal combustion engine of a motor vehicle.

13. The oil-water heat exchanger according to claim 2, wherein the insulating layer is provided by passivation oxidization or anodization, of the underlying surface.

14. The oil-water heat exchanger according to claim 1, wherein the heating coating is formed as a thermally sprayed-on layer.

15. The oil-water heat exchanger according to claim 1, wherein the heating coating is structured with a masking process.

16. The oil-water heat exchanger according to claim 1, wherein the heating coating has a height between at least 10 μm and at most 20 μm, and/or a conductor track defined by the heating coating is preferably at least 10 mm wide.

17. The oil water heat exchanger according to claim 1, wherein the conductor track defined in the heating coating is at least 30 mm wide.

18. The oil-water heat exchanger according to claim 1, wherein the oil-water heat exchanger has multiple trough elements, and wherein at least one heating coating is arranged between two trough elements.

Description

[0028] The invention will be described below on the basis of exemplary embodiments, which will be discussed in more detail on the basis of the figures. In the figures:

[0029] FIG. 1 shows a schematic side view of a first oil-water heat exchanger;

[0030] FIG. 2 shows a schematic view of a second embodiment of the oil-water heat exchanger; and

[0031] FIG. 3 is a schematic illustration of the electric heating coating on an underlying surface.

[0032] In the following description, the same reference designations will be used for identical parts and parts of identical action.

[0033] FIG. 1 shows, in a schematic view, an oil-water heat exchanger (which may be designed for example in detail as described in EP 2 466 241 A1) having multiple (soldered-together) trough elements 10, a base 11 and a cover 12. An electric heating coating 13 is arranged on the cover 12.

[0034] In the alternative embodiment as per FIG. 2, two electric heating coatings 13 are provided, specifically on the one hand on the base 11 and on the other hand between two trough elements 10. Other embodiments are conceivable, for example heating coatings on the cover and base or only in the interior of the heat exchanger, possibly between two troughs 10.

[0035] FIG. 3 is a schematic illustration of the electric heating coating on an underlying surface, specifically (for example) the cover 12. To produce the structure as per FIG. 3, the cover 12 is firstly produced with a passivation layer (by oxidation or anodization). The electric heating coating 13 is then applied to the insulating layer 14, for example by being (thermally) sprayed on.

[0036] It is pointed out at this juncture that all of the above-described parts both individually and in any combination, in particular the details illustrated in the drawings, may be claimed as being essential to the invention. Modifications in relation to this are familiar to a person skilled in the art.

REFERENCE DESIGNATIONS

[0037] 10 Trough element

[0038] 11 Base

[0039] 12 Cover

[0040] 13 Electric heating coating

[0041] 14 Insulating layer