Carbon nanotube heater-equipped electric oven

1. An oven, comprising:

an oven body defining a chamber;

an oven door pivotably mounted on the oven body to seal the chamber; and

a heater located in the chamber of the oven body, the heater comprising a carbon nanotube structure, at least two electrodes electrically connected to the carbon nanotube structure, the carbon nanotube structure comprising a plurality of carbon nanotubes joined end to end by wan der Waals attractive force.

2. The oven of claim 1 , wherein a heat capacity per unit area of the carbon nanotube structure is less than or equal to 1.7×10 −6 J/cm 2 *K.

3. The oven of claim 1 , wherein the carbon nanotube structure is a substantially pure structure of carbon nanotubes.

4. The oven of claim 3 , wherein the carbon nanotubes are orderly arranged in the carbon nanotube structure.

5. The oven of claim 1 , wherein the carbon nanotube structure comprises at least one drawn carbon nanotube film comprising the carbon nanotubes.

6. The oven of claim 5 , wherein the carbon nanotubes of the at least one drawn carbon nanotube film, form successively oriented carbon nanotube segments joined end-to-end by van der Waals attractive force therebetween, and the carbon nanotubes are substantially oriented along a same direction.

7. The oven of claim 6 , wherein the carbon nanotubes in each carbon nanotube segment are substantially parallel to each other.

8. The oven of claim 5 , wherein the carbon nanotube structure comprises two or more stacked coplanar carbon nanotube films, each of the carbon nanotube films comprising the plurality of carbon nanotubes substantially oriented along a same direction.

9. The oven of claim 8 , wherein an angle between the aligned directions of the carbon nanotubes in adjacent carbon nanotube films is about 0 degrees to about 90 degrees.

10. The oven of claim 1 , wherein a first electrode of the at least two electrodes is located at one end of the carbon nanotube structure, and a second electrode of the at least two electrodes is located at an opposite end of the carbon nanotube structure.

11. The oven of claim 1 , wherein the heater is insulatively connected to the oven body.

12. The oven of claim 1 , further comprising a matrix enclosing the carbon nanotube structure therein.

13. The oven of claim 12 , wherein the carbon nanotube structure defines a plurality of micropores; the matrix is present in some of the plurality of micropores.

14. The oven of claim 1 , further comprising a heat-reflecting layer disposed on an inner surface of the oven body.

15. The oven of claim 1 , further comprising a loading element received in the chamber of the oven body and located apart from the heater.

16. The oven of claim 15 , further comprising a protective layer disposed between the heater and the loading element.

17. The oven of claim 15 , wherein the oven body comprises a rack guide disposed on an inner surface of the cavity, the loading element slidably engaging with the rack guide.

18. The oven of claim 15 , wherein the oven body comprises two opposite sidewalls each having a rack guide disposed thereon, the loading element slidably engaging in the rack guides.

19. An oven, comprising:

a cooking chamber;

a loading element for supporting food, the loading element being inserted in the cooking chamber;

a heater received in the cooking chamber;

wherein the heater comprises a carbon nanotube structure, the carbon nanotube structure comprises a plurality of carbon nanotubes joined by wan der Waals attractive force.

20. The oven of claim 19 , wherein the carbon nanotube structure is a carbon nanotube film comprising the carbon nanotubes substantially oriented along a same direction; the heater further comprises at least two electrodes connected to the carbon nanotube film.