Method for heating object using sheet-shaped heat and light source

Patent metadata

Field	Value
Publication number	US-9215759-B2
Application number	US-201414265464-A
Country	US
Kind code	B2
Filing date	Apr 30, 2014
Priority date	Oct 10, 2007
Publication date	Dec 15, 2015
Grant date	Dec 15, 2015

Abstract

The present disclosure relates to a method for heating an object. A sheet-shaped heat and light source is provided. The sheet-shaped heat and light source includes a carbon nanotube film curved to form a hollow cylinder, and at least two electrodes spaced from each other, located on a surface of the hollow cylinder and electrically connected to the carbon nanotube film. An object is located in the hollow cylinder. A voltage is supplied between the at least two electrodes.

First claim

What is claimed is:

1. A method for heating an object, the method comprising:
providing a sheet-shaped heat and light source, the sheet-shaped heat and light source comprising:
a carbon nanotube film curved to form a hollow cylinder; and
at least two electrodes spaced from each other, located on a surface of the hollow cylinder, and electrically connected to the carbon nanotube film;

placing an object in the hollow cylinder; and
supplying a voltage between the at least two electrodes.

2. The method of claim 1 , wherein the carbon nanotube film and the object are directly in contact with each other.

3. The method of claim 1 , wherein the carbon nanotube film and the object are spaced from each other.

4. The method of claim 1 , wherein the voltage applied to the at least two electrodes is in a range from about 10 volts to about 30 volts, and a temperature of the carbon nanotube film is in a range from about 50° C. to about 500° C.

5. The method of claim 4 , wherein the voltage applied to the at least two electrodes is about 15 volts, and a temperature of the carbon nanotube film is about 300° C.

6. The method of claim 1 , further comprising placing the carbon nanotube film in a device, wherein the device is a vacuum chamber or a chamber filled with inert gases.

7. The method of claim 6 , wherein the voltage applied to the at least two electrodes is in a range from about 80 volts to about 150 volts, and the carbon nanotube film emits electromagnetic waves.

8. The method of claim 7 , wherein the electromagnetic waves are selected from the group consisting of visible light, general thermal radiation, and ultraviolet radiation.

9. The method of claim 1 , wherein a thickness of the carbon nanotube film is in a range from about 1 micrometer to about 1 millimeter.

10. The method of claim 1 , wherein the carbon nanotube film comprises a plurality of carbon nanotubes combined by van der Waals attractive force.

11. The method of claim 10 , wherein the plurality of carbon nanotubes are substantially parallel to a surface of the carbon nanotube film.

12. The method of claim 1 , wherein the carbon nanotube film is a free-standing structure.

13. The method of claim 1 , wherein the carbon nanotube film is square shaped.

14. The method of claim 1 , wherein the at least two electrodes extend along a length direction of the hollow cylinder.

15. The method of claim 1 , wherein the at least two electrodes comprises at least one of metal films and metal foils.

16. The method of claim 1 , wherein the at least two electrodes are located on an outer surface of the hollow cylinder.

17. The method of claim 1 , wherein the at least two electrodes are attached on the carbon nanotube film by a conductive adhesive.

18. A method for heating an object, the method comprising:
providing a carbon nanotube film;
curving the carbon nanotube film to form a hollow cylinder;
electrically connecting a first electrode and a second electrode with the carbon nanotube film;
placing an object in the hollow cylinder; and
supplying a voltage between the at least two electrodes.

19. The method of claim 18 , wherein the electrically connecting the first electrode and the second electrode with the carbon nanotube film comprises locating the first electrode and the second electrode on a surface of the hollow cylinder, and the first electrode and the second electrode are spaced from each other.

20. The method of claim 18 , wherein the providing the carbon nanotube film comprises:
providing an array of carbon nanotubes on a substrate;
forming a carbon nanotube film by pressing the array of carbon nanotubes.

Assignees

• Univ Tsinghua
• Hon Hai Prec Ind Co Ltd

Inventors

• Liu Chang-Hong
• Fan Shou-Shan

Classifications

• H01K1/14

  characterised by the shape · CPC title

• H05B3/00

  Ohmic-resistance heating · CPC title

• Y10S977/95

  Electromagnetic energy · CPC title

• H05B3/10 Primary

  Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor · CPC title

• H05B3/26

  heating conductor mounted on insulating base {(for transparent areas H05B3/84, H05B3/86)} · CPC title