Electronic vapor provision device

1. An electronic vapor provision device comprising:

a power cell; and

a vaporizer, wherein the vaporizer comprises a heating element and a heating element support, the heating element support defining a flat substrate surface, wherein the heating element support is a rigid support made from porous ceramic so as to allow liquid storage within the heating element support, and wherein the heating element has a zig-zag shape that is coplanar with the substrate.

2. The electronic vapor provision device of claim 1 , wherein the heating element is on the outside of the heating element support.

3. The electronic vapor provision device of claim 1 , wherein the heating element support has a rectangular shape, and wherein opposing corners of the zig-zag shape are aligned along respective edges of the rectangular shape.

4. The electronic vapor provision device of claim 1 , wherein the heating element passes through the flat substrate surface.

5. The electronic vapor provision device of claim 1 , wherein the heating element is a wire.

6. The electronic vapor provision device of claim 1 , wherein the vaporizer further comprises a vaporization cavity, and wherein at least part of the heating element is inside the vaporization cavity.

7. The electronic vapor provision device of claim 6 , wherein the vaporizer is configured such that in use the vaporization cavity is a negative pressure region.

8. The electronic vapor provision device of claim 1 , wherein the electronic vapor provision device comprises a mouthpiece section and the vaporizer is part of the mouthpiece section.

9. The electronic vapor provision device of claim 1 , wherein the heating element support has a pitted surface.

10. The electronic vapor provision device of claim 1 , wherein the heating element support comprises a substrate having holes.

11. The electronic vapor provision device of claim 1 , further comprising:

a liquid store;

a wicking element configured to wick liquid from the liquid store to the heating element for vaporizing the liquid; and

an air outlet for vaporized liquid from the heating element.

12. An electronic vapor provision device comprising:

a vaporizer, wherein the vaporizer comprises a heating element and a heating element support, wherein the heating element support defines a flat substrate surface, wherein the heating element support is a rigid support made from porous ceramic so as to allow liquid storage within the heating element support, and wherein the heating element has a zig-zag shape that is coplanar with the substrate.