HEATING DEVICE AND METHOD FOR PRODUCING SUCH A HEATING DEVICE

Abstract

A method for producing an electric heating device, preferably liquid or air heating device, in particular for a motor vehicle, wherein at least one first conductive polymer layer which contains a first polymer component and a first conductive component, in particular carbon component, is applied to an, in particular, insulating, first substrate in order to form a first heating element and is crosslinked there by means of radiation.

Claims

1. Method for producing an electric heating device for a motor vehicle, wherein at least one first conductive polymer layer which contains a first polymer component and a first conductive component is applied to an insulating, first substrate in order to form a first heating element and is crosslinked there by radiation.

2. Method according to claim 1, wherein the polymer layer is applied to the substrate by printing and/or blade coating and/or spraying and/or dipping.

3. Method according to claim 1, wherein the radiation comprises electron radiation, -, - and/or -radiation.

4. Method according to claim 1, wherein at least one second conductive polymer layer which contains a second polymer component and a second conductive component is applied to an insulating second substrate to form a second heating element and is crosslinked there by radiation, wherein an intermediate space through which fluid is to heat it up is formed between the heating elements.

5. Method according to claim 1, wherein the substrate or the substrates is or are manufactured at least in sections from a polymer and/or from an electrically insulating material and/or is or are manufactured from a material which foams and/or melts at a temperature below 500 C.

6. Method according to claim 1, wherein the polymer layer or the polymer layers and/or a paste for producing the respective polymer layer comprises/comprise at least one polymer on the basis of at least one olefin; and/or at least one copolymer of at least one olefin and at least one monomer which can be copolymerized therewith, and/or at least one polyalkenamer (polyacetylene or polyalkenylene); and/or at least one fluoropolymer.

7. Method according to claim 1, wherein the conductive component is present in particle form

8. Electric heating device, preferably liquid or air heating device for a motor vehicle comprising at least one first heating element around which the fluid to be heated up can flow, wherein the first heating element has an electrically insulating, first substrate and at least one electrically conductive first polymer layer which contains a first polymer component and a first conductive component, wherein the polymer component is crosslinked by irradiation.

9. Heating device according to claim 8, wherein at least one second heating element is provided, wherein the second heating element has a second substrate and at least one electrically conductive second polymer layer which contains a second polymer component and a second conductive component, wherein the second polymer component is crosslinked by irradiation, wherein an intermediate space through which fluid is flowable in order to heat it up is formed between the heating elements.

10. Heating device according to claim 8, wherein first and/or second heating element at least substantially extends/extend along a fluid flow direction and/or extends/extend at an angle in relation to the fluid flow direction.

11. Heating device according to claim 8, wherein the substrate or the substrates is or are designed as a plate, and/or has/have a thickness of at least 0.1 mm.

12. Heating device according to claim 8, wherein the first and/or second polymer layer and/or the first and/or second substrate is/are at least substantially flat and/or the first and/or second polymer layer is/are in contact with the substrate over at least 20% of a surface of the substrate facing the respective polymer layer.

13. Heating device according to claim 8, wherein at least three heating elements are optionally provided with corresponding intermediate spaces and/or a diameter of the intermediate space between the first and the second heating element is greater than a thickness of the first and/or second heating element.

14. Method for operating a heating device, preferably liquid or air heating device, according to claim 8, wherein fluid flows through the intermediate spaces and, in the process, is heated up.

15. Use of a heating device according to claim 8 or produced according to claim 1 for heating up fluid in a vehicle.

16. Method for operating a heating device according to claim 1, wherein fluid flows through the intermediate spaces and is heated up.

17. Method for operating a heating device according to claim 1, wherein the first conductive component is a carbon component.

18. Method according to claim 5, wherein the a polymer is polyethylene and/or polypropylene and/or polyether ketone and/or polyamide.

19. Method according to claim 7, wherein the particle form is soot particles, and/or as a carbon skeleton and/or in the form of soot and/or graphite and/or graphene and/or carbon fibres and/or carbon nanotubes and/or fullerenes.

20. Heating device according to claim 8, wherein the first and/or second polymer layer and/or the first and/or second substrate is/are at least substantially flat and/or the first and/or second polymer layer is/are in contact with the substrate over at least 80% of a surface of the substrate facing the respective polymer layer.

Description

[0068] The disclosure will be described below with reference to an exemplary embodiment which will be explained in more detail with reference to the attached FIG, in which:

[0069] FIG. 1 shows a schematic oblique view of an electric heating device according to the disclosure.

[0070] The same reference numbers are used for identical and identically acting parts in the description below.

[0071] FIG. 1 shows an oblique view of an air heating device according to the disclosure. The air heating device comprises a multiplicity of heating elements 9 which each have a conductive polymer layer 10 and a substrate 11 to which the respective polymer layer 10 is applied. Overall (not compulsory), there are eight heating elements 9 in the present case. Corresponding intermediate spaces 12 (seven in the present case) are provided between the heating elements. The individual polymer layers 10 are connected to contact strips 13 (metal strips) arranged on the respective substrate 11. The contact strips 13 are in turn connected to (in the present case two) contact strips 13a, 13b (metal strips) connecting the heating elements 9 to one another. The contact strips 13a, 13b in turn permit contacting via contacts 14a, 14b. The air flow (during operation) is indicated by the arrow 15. The air flow therefore flows through the intermediate spaces 12 which extend parallel to the air flow. The polymer layers 10 shown in FIG. 1 are crosslinked by (ionizing) radiation, preferably electron radiation.

[0072] It should be pointed out at this juncture that all of the above-described parts are claimed as being essential to the disclosure as seen by themselves and in any combination, in particular the details illustrated in the drawings. A person skilled in the art is familiar with modifications thereof.

LIST OF REFERENCE SIGNS

[0073] 9 Heating element [0074] 10 Polymer layer [0075] 11 Substrate [0076] 12 Intermediate space [0077] 13 Contact strip [0078] 13a, 13b Contact strip [0079] 14a Contact [0080] 14b Contact [0081] 15 Arrow