Heat exchanger system

Abstract

The invention relates to a heat exchanger system, in particular for connection to an internal combustion engine, preferably of a motor vehicle, comprising at least one heat exchanger module, in particular oil-water heat exchanger module (10), and a layer heating module (11), which is mounted or mountable on the heat exchanger module, wherein the layer heating module (11) comprises a substrate, in particular a carrier plate (12), and an electric heating coating (13) applied to the substrate, in particular to the carrier plate (12).

Claims

1. A heat exchanger system for connection to an internal combustion engine of a motor vehicle, comprising at least one heat exchanger module and a layer heating module, which is adhesively bonded and/or clamped to a cover of the heat exchanger module, wherein the layer heating module comprises a substrate formed as a carrier plate and an electric heating coating applied to the substrate.

2. The heat exchanger system according to claim 1, wherein the layer heating module is connected in material-locking fashion to the heat exchanger module.

3. The heat exchanger system according to claim 1, wherein the substrate is manufactured from an electrically and/or thermally insulating material.

4. The heat exchanger system according to claim 1, wherein the heating coating is arranged on that side of the substrate which faces towards the heat exchanger module.

5. The heat exchanger system according to claim 1, wherein, in the mounted state of the layer heating module, an intermediate space is formed between the layer heating module and the heat exchanger module, wherein the intermediate space is preferably filled with a filler material.

6. The heat exchanger system according to claim 1, wherein a contacting of the heating coating extends through the substrate wherein the contacting preferably extends at least twice through the substrate, such that one conductor section of the electrical conductor runs parallel to the electric heating coating so as to make contact therewith.

7. The heat exchanger system according to claim 1, wherein the electric heating coating is earthed via the heat exchanger module.

8. The heat exchanger system according to claim 1, wherein both sides of the substrate are provided with an electric heating coating.

9. The heat exchanger system according to claim 1, wherein at least two heat exchanger modules and/or at least two layer heating modules are provided, wherein at least one layer heating module is arranged between two heat exchanger modules.

10. The heat exchanger system according to claim 1, wherein the layer heating module is designed for operation in a low-volt range, the low voltage range being one of 12 volts, 24 volts or 48 volts.

11. Use of a layer heating module, comprising a substrate and an electric heating coating applied to the substrate for the purposes of warming at least one fluid of a heat exchanger.

12. A method for producing a heat exchanger system according to claim 1, comprising the steps: providing or producing a heat exchanger module, and a layer heating module, comprising a substrate, and an electric heating coating applied to the substrate; and connecting the heat exchanger module and layer heating module by adhesive bonding and/or clamping.

13. Method according to claim 12, wherein, to produce the layer heating module, at least one hole is formed in the substrate, wherein a contacting for the contact of the electric heating coating is led through the at least one hole, wherein—in a first sub-step a blind hole is produced in the substrate, in a second sub-step the electric heating coating is applied to the substrate, and in a third sub-step a conductor section is guided against an end of the blind hole, such that a base of the blind hole breaks, such that the conductor section comes into contact with the electric heating coating, and/or wherein two holes are created in the substrate wherein a conductor section of the contacting runs parallel to the electric heating coating so as to make contact therewith.

14. The heat exchanger system according to claim 1, wherein the at least one heat exchanger module is an oil-water heat exchanger module.

15. The heat exchanger system according to claim 1, wherein the substrate comprises a carrier plate.

16. The heat exchanger system according to claim 2, wherein the layer heating module is adhesively bonded to the heat exchanger module.

17. The heat exchanger system according to claim 2, wherein the layer heating module is clamped in non-positively locking and/or positively locking fashion to the heat exchanger module.

18. The heat exchanger system according to claim 3, wherein the substrate is manufactured from ceramic.

19. The heat exchanger system according to claim 7, wherein the electric heating coating is earthed via a housing of the heat exchanger module.

20. The heat exchanger system according to claim 1, wherein the at least one heat exchanger module includes at least one first fluid channel for conducting a first fluid and at least one second fluid for conducting a second fluid.

Description

(1) 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:

(2) FIG. 1 shows a schematic view of a heat exchanger;

(3) FIG. 2 shows a schematic detail of a layer heating module as per a first embodiment;

(4) FIG. 3 shows a schematic detail of a further embodiment of the layer heating module;

(5) FIG. 4 shows a schematic detail of a (not yet fully produced) layer heating module as per a further embodiment;

(6) FIG. 5 shows a schematic detail of a further embodiment of the layer heating module.

(7) In the following description, the same reference signs will be used for identical parts and parts of identical action.

(8) FIG. 1 shows an oil-water heat exchanger module 10 and a layer heating module 11. The oil-water heat exchanger module 10 may be constructed for example as described in EP 2 466 241 A1, in particular may have multiple (possibly soldered-together) trough elements.

(9) The layer heating module 11 comprises a carrier plate 12 and an electric heating coating 13. The layer heating module 11 is preferably attached to a cover 28 of the oil-water heat exchanger 10.

(10) The electric heating coating 13 is applied to a side 14 of the carrier plate 12 which faces toward the oil-water heat exchanger module 10 (though this is not imperative). The reference sign 15 indicates a first variant for the production of an earth contact, specifically by means of a pad 15 which connects the heating coating 13 to the oil-water heat exchanger module 10 (in particular a housing thereof). A further alternative is denoted by the reference sign 16, which specifically shows a line 16 which likewise connects the electric heating coating to the oil-water heat exchanger module 10 (in particular a housing thereof). Alternatively, the line 16 could also be earthed externally (that is to say not via the oil-water heat exchanger module 10). A contact corresponding to the earth contact is not illustrated. A second contact of said type could however likewise be formed by a line analogous to the line 16, if the latter is connected correspondingly (in a manner deviating from FIG. 1).

(11) FIG. 2 shows a first embodiment of a contacting of the electric heating coating. In this case, too, the electric heating coating 13 is situated on a side 14 facing toward the carrier plate (not shown) (though this is not imperative). A side averted from the carrier plate is denoted by the reference sign 17. The carrier plate 12 has a hole 18 through which a conductor section 19 that forms the contacting is led. To facilitate the contacting, one end 20 of the conductor section 19 is formed as a widened portion and is arranged in or over a recess 21. The end 20 is then preferably oversprayed during the production of the heating coating 13, such that contact is formed.

(12) FIG. 3 shows an embodiment similar to FIG. 2, in which, however, no widened end 20 and no recess 21 are provided.

(13) FIG. 4 shows a schematic detail of the layer heating module prior to the final completion of production. Specifically, said figure shows a conductor section 19 which is being inserted into a blind hole 22. Opposite (or adjoining) the first blind hole 22, there is provided a second blind hole 23 (though this is not imperative). In a next step, the heating coating 13 is then applied, and thereafter a predetermined breaking point 24 between the two blind holes 22, 23 is broken through, such that the conductor section 19 can come into contact with the heating coating 13. The predetermined breaking point 24 is preferably defined by a web.

(14) FIG. 5 shows a further possibility of the contacting of the heating coating 13. In this embodiment, a first hole 25 and a second hole 26 are formed into the carrier plate 12. A conductor section 19 is in this case led both through the first hole 25 and through the second hole 26, such that a conductor subsection 27 runs parallel to the heating layer 13 so as to make contact therewith. Particularly simple and reliable contacting is realized in this way. Here, too, the electric heating coating is preferably applied (sprayed on) after the attachment of the conductor section 19.

(15) 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, are claimed as being essential to the invention. Modifications in relation to this are familiar to a person skilled in the art.

LIST OF REFERENCE SIGNS

(16) 10 Oil-water heat exchanger module 11 Layer heating module 12 Carrier plate 13 Electric heating coating 14 Side 15 Pad 16 Conductor 17 Side 18 Hole 19 Conductor section 20 End 21 Recess 22 First blind hole 23 Second blind hole 24 Predetermined breaking point 25 First hole 26 Second hole 27 Conductor subsection 28 Cover