Apparatus for a heating device for a vehicle

Patent metadata

Field	Value
Publication number	US-10897794-B2
Application number	US-201615768255-A
Country	US
Kind code	B2
Filing date	Oct 28, 2016
Priority date	Nov 9, 2015
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

An apparatus for a heating device for a vehicle comprises a layer stack which, in a stacking direction, has a heating conductor layer, an electrically conductive layer which forms a contact region, wherein a contour in a projection in the stacking direction of the electrically conductive layer is prespecified, in order to prevent a hotspot on the electrically conductive layer, by at least one of a prespecified width of a front side of the electrically conductive layer which faces a central region of the heating conductor layer, a prespecified distance from a joint of the heating conductor layer, and a prespecified curvature of the contour.

First claim

The invention claimed is:

1. An apparatus for a heating device for a vehicle, comprising a layer stack which, in a stacking direction, comprises: a
heating conductor layer, and
an electrically conductive layer which forms a contact region,
wherein a side of the electrically conductive layer which faces a central region of the heating conductor layer comprises two protruding convex sections protruding in the direction of a current flow which in operation flows from the contact region to the heating conductor layer.

2. The apparatus according to claim 1 , wherein, a projection in the stacking direction along the side comprises a curvature of two radii, wherein the two radii are different from one another.

3. The apparatus according to claim 1 , wherein, in a projection in the stacking direction, the side further comprises a straight section.

4. The apparatus according to claim 1 , wherein, in a projection in the stacking direction, the side further comprises a concave section.

5. The apparatus according to claim 1 , wherein: in a projection in the stacking direction, a width of the electrically conductive layer tapers, starting from the width of the side, at least in a subregion of the electrically conductive layer.

6. The apparatus according to claim 1 , further comprising: a conduction strip which is composed of an electrically conductive material, a connection which connects the electrically conductive layer and the conduction strip to one another in order to form electrical and/or mechanical contact with the electrically conductive layer via the conduction strip.

7. The apparatus according to claim 6 , wherein the connection is a welding connection.

8. The apparatus according to claim 6 , wherein the conduction strip comprises copper.

9. The apparatus according to claim 6 , wherein an area of the electrically conductive layer, which area is averted from the heating conductor layer, is larger than a contact area in which the conduction strip is in contact with the electrically conductive layer.

10. The apparatus according to claim 1 , wherein the electrically conductive layer is a thermally sprayed electrically conductive layer.

11. The apparatus according to claim 1 , wherein the heating conductor layer is a thermally sprayed heating conductor layer.

12. The apparatus according to claim 1 , wherein the electrically conductive layer comprises copper.

13. An apparatus for a heating device for a vehicle, comprising a layer stack which, in a stacking direction, comprises:
a heating conductor layer,
an electrically conductive layer which forms a contact region,
wherein a contour in a projection in the stacking direction of the electrically conductive layer maintains temperatures below a maximum value in a range of 195 degrees C. to 250 degrees C. during operation in immediately adjacent regions of the electrically conductive layer.

14. The apparatus according to claim 13 wherein the contour maintains temperatures below a maximum value in a range of 195 degrees C. to 250 degrees C. during operation in immediately adjacent regions of the electrically conductive layer by a prespecified width of a side of the electrically conductive layer which faces a central region of the heating conductor layer, wherein the width of the side of the electrically conductive layer which faces a central region of the heating conductor layer is greater than a width of the contact region at an end of a subregion which faces the side of the electrically conductive layer which faces a central region of the heating conductor layer.

15. The apparatus according to claim 13 wherein the contour maintains temperatures below a maximum value in a range of 195 degrees C. to 250 degrees C. during operation in immediately adjacent regions of the electrically conductive layer by a distance from a joint of the heating conductor layer.

16. The apparatus according to claim 13 wherein the contour maintains temperatures below a maximum value in a range of 195 degrees C. to 250 degrees C. during operation in immediately adjacent regions of the electrically conductive layer by prespecified curvature of the contour wherein, in the projection in the stacking direction along the side, the prespecified curvature is by two radii for the side, wherein the two radii are different from one another.

17. The apparatus according to claim 13 , wherein, in the projection in the stacking direction, the side has a straight section.

18. The apparatus according to claim 13 , wherein, in the projection in the stacking direction, the side has a concave section and a convex section.

19. The apparatus according to claim 13 , wherein: in the projection in the stacking direction, a width of the electrically conductive layer tapers, starting from the width of the side, at least in a subregion of the electrically conductive layer.

Assignees

• Webasto SE

Inventors

• Holzwarth Achim
• Buckl Stephan
• Klinkmüller Tino
• Schmidmayer Andreas
• Reuter Andreas
• Kabelitz Thorsten
• Göttl Karl
• Eckert Daniel

Classifications

• H05B3/06 Primary

  Heater elements structurally combined with coupling elements or holders · CPC title

• B60H2001/2268

  Constructional features · CPC title

• H05B3/08 Primary

  having electric connections specially adapted for high temperatures · CPC title

• B60H2001/2278

  Connectors, water supply, housing, mounting brackets · CPC title

• B60H1/2215

  the heat being derived from electric heaters · CPC title