Electronic cigarette and atomizing assembly and atomizing element thereof

1. A method of manufacturing an atomizing element for an electronic cigarette, comprising:

providing a porous body comprising a liquid absorbing surface for absorbing liquid and an atomizing surface; and

forming a porous heating film on the atomizing surface by vapor deposition;

wherein the porous body is provided with a plurality of micropores, the porous body is made of porous ceramic and insulated from the porous heating film, a diameter of the plurality of micropores on the porous body is greater than a thickness of the porous heating film.

2. The method according to claim 1 , wherein the plurality of the micropores has a diameter of about 1 μm to about 100 μm.

3. The method according to claim 2 , wherein a sum volume of the micropores having a diameter of about 5 μm to about 30 μm is more than 60% of a sum volume of total micropores.

4. The method according to claim 1 , wherein the porous body has a porosity of about 30% to about 83%.

5. The method according to claim 1 , wherein the porous heating film is made of metal; the porous heating film has a thickness of about 0.5 μm to about 1.5 μm; the porous heating film is provided with a plurality of micropores having a diameter of about 5 μm to about 30 μm.

6. The method according to claim 1 , wherein the porous heating film is made of one selected from the group consisting of titanium, nickel, and nickel-chromium; the thickness of the porous heating film ranges from about 0.8 μm to about 1 μm.

7. The method according to claim 1 , wherein the porous body comprises a first porous body, and a second porous body connected to the first porous body, the liquid absorbing surface is located on the first porous body, the atomizing surface is located on the second porous body; wherein at least one of materials, diameter of micropores, and porosities of the first porous body and the second porous body are different.

8. The method according to claim 1 , wherein the porous body comprising opposing first and second sides and a sidewall that extends therebetween, the liquid absorbing surface is located on the first side, and the atomizing surface is located on the second side.

9. The method according to claim 1 , wherein the porous body has a tubular shape; the liquid absorbing surface is an outer surface of the porous body; the atomizing surface is an inner surface of the porous body; the porous heating film at least partially covers the atomizing surface.

10. The method according to claim 1 , wherein the porous body has a columnar shape; the liquid absorbing surface comprises a section of a sidewall of the porous body close to both ends thereof; the atomizing surface comprises a remainder of the sidewall of the porous body and is positioned in the middle thereof.

11. The method according to claim 10 , wherein the porous body defines an axial liquid communication hole; an inner surface of the liquid communication hole also functions as the liquid absorbing surface.

12. The method according to claim 1 , wherein the porous body has a first opening that is contained within the body and that extends through the body, the porous heating film has a second opening that is aligned with the first opening in the porous body.

13. The method according to claim 1 , further comprising:

coupling at least two electrodes to the porous heating film; and

coupling a wire to the at least two electrodes by brazing technology, wherein at least partial wire extends inside the porous body.

14. The method according to claim 1 , wherein the porous body and the porous heating film are integrally formed.