Water-conducting domestic appliance

1. A water-conducting domestic appliance, comprising:

a container including at least one wall having an inner wall surface facing an interior of the container and an outer wall surface facing away from the interior of the container, with an expansion opening formed in the at least one wall;

an expansion component disposed on the outer wall surface of the container and operatively associated with the expansion opening, the expansion component being mounted at a single predetermined orientation with respect to the at least one wall; and

device for preventing rotation of the expansion component with respect to the container for securing the expansion component in a predetermined relationship with the expansion opening and the container, the device having a projection formed as a portion of the expansion component and a recess formed in the at least one wall as a portion of the expansion opening, wherein the projection extends into the recess and abuts a wall forming the recess and remains within the recess to both fix the expansion component at the single predetermined orientation and to prevent rotation of the expansion component therefrom.

2. The water-conducting domestic appliance of claim 1 , wherein the device for preventing rotation includes a projection of the expansion component and a recess which receives the projection and is formed as a portion of the at least one wall.

3. The water-conducting domestic appliance of claim 2 , wherein the container includes an outer coating applied thereto, and the recess is formed by at least one indentation in the outer coating.

4. The water-conducting domestic appliance of claim 3 , wherein the recess includes an open-edged clearance formed in the outer coating.

5. The water-conducting domestic appliance of claim 3 , wherein the outer coating includes an opening extending around the expansion opening.

6. The water-conducting domestic appliance of claim 4 , wherein an edge of the opening has the open-edged clearance.

7. The water-conducting domestic appliance of claim 3 , wherein the outer coating includes a bitumen insulating coating.

8. The water-conducting domestic appliance of claim 3 , wherein the outer coating is fixed to the container by a fusion process.

9. The water-conducting domestic appliance of claim 1 , wherein the expansion component is fastened to the container using a screw connection.

10. The water-conducting domestic appliance of claim 1 , wherein the expansion component includes an expansion tube connecting piece.

11. The water-conducting domestic appliance of claim 10 , further comprising a tube connected to the expansion tube connecting piece that is guided by way of a holding facility provided on the expansion component.

12. The water-conducting domestic appliance of claim 11 , wherein the holding facility is arranged on a projection or forms a projection.

13. The water-conducting domestic appliance of claim 1 , further comprising a water supply with a water connecting piece on the expansion component.

14. The water-conducting domestic appliance of claim 1 , and further comprising a fastener retaining the expansion component against at least one wall of the container.

15. A water-conducting domestic appliance, comprising:

a container with an expansion opening formed therein and an outer coating applied thereto;

an expansion component on the container and operatively associated with the expansion opening; and

a device for stopping rotation of the expansion component with respect to the container for securing the expansion component in a predetermined relationship with the expansion opening and the container, wherein the device for stopping rotation includes a projection of the expansion component and a recess formed by at least one indentation in the outer coating which receives the projection and is operatively associated with the container.

16. The water-conducting domestic appliance of claim 15 , wherein the recess includes an open-edged clearance formed in the outer coating.

17. The water-conducting domestic appliance of claim 15 , wherein the outer coating includes an opening extending around the expansion opening.

18. The water-conducting domestic appliance of claim 16 , wherein an edge of the opening has the open-edged clearance.

19. The water-conducting domestic appliance of claim 15 , wherein the outer coating includes a bitumen insulating coating.

20. The water-conducting domestic appliance of claim 15 , wherein the outer coating is fixed to the container by a fusion process.