Vaporizer, fuel cell having vaporizer, and vaporizing method

1. A vaporizer comprising:

a first liquid suction section to suck a first liquid;

a second liquid suction section to suck a second liquid; and

a heating element to heat the first liquid suction section and the second liquid suction section to vaporize the first liquid and the second liquid;

wherein the first liquid suction section and the second liquid suction section are concentrically laminated in a radial direction; and

wherein a partition section is interposed between the first liquid suction section and the second liquid suction section.

2. The vaporizer according to claim 1 , wherein the first liquid suction section is provided around the second liquid suction section.

3. The vaporizer according to claim 1 , wherein the heating element is provided at an outer periphery of the first liquid suction section.

4. The vaporizer according to claim 1 , wherein the heating element is provided on an end side of the first liquid suction section.

5. The vaporizer according to claim 1 , wherein a space, through which an end of the first liquid suction section and an end of the second liquid suction section are in communication with each other, is provided.

6. The vaporizer according to claim 1 , wherein the first liquid suction section is configured to suck, as the first liquid, a liquid which has a boiling point higher than a boiling point of the second liquid.

7. The vaporizer according to claim 1 , wherein:

the first liquid suction section is disposed so as to cover a periphery of the second liquid suction section;

the heating element is provided at an outer circumference of the first liquid suction section; and

the heating element (i) heats an end of the first liquid suction section to a temperature not less than a boiling point of the first liquid, (ii) sets another end of the first liquid suction section to a value less than the boiling point of the first liquid, (iii) heats an end of the second liquid suction section to a temperature not less than a boiling point of the second liquid, and (iv) sets another end of the second liquid suction section to a value less than the boiling point of the second liquid.

8. The vaporizer according to claim 1 , further comprising a discharging section to cover an end of the first liquid suction section.

9. The vaporizer according to claim 1 , wherein the heating element heats the second liquid suction section through the first liquid suction section.

10. A fuel cell system comprising:

the vaporizer according to claim 1 ;

a chemical reaction unit to generate hydrogen by using the first liquid and the second liquid which are vaporized in the vaporizer; and

a fuel cell to generate power by using the hydrogen.

11. A vaporizing method of liquid, comprising:

interposing a partitioning material between a plurality of liquid sucking sections;

allowing one end of each of the liquid sucking sections to absorb different kinds of liquids;

allowing the liquids respectively absorbed by the liquid sucking sections to penetrate the other ends; and

heating the other end of each of the liquid sucking sections to vaporize the liquids.

12. The vaporizing method according to claim 11 , wherein the plurality of liquid sucking sections are concentrically laminated in a radial direction, a partitioning material is interposed between the plurality of liquid sucking sections, and a heater is provided at an outer periphery of an end of the outermost liquid sucking section.

13. The vaporizing method according to claim 12 , wherein an outermost liquid sucking section from among the plurality of liquid sucking sections is supplied with a liquid having a highest boiling point from among the different kinds of liquids.

14. The vaporizing method according to claim 11 , wherein the plurality of liquid sucking sections are laminated in a thickness direction, a partitioning material is interposed between the plurality of liquid sucking sections, and a heater is provided at a lower layer of an end of the lowermost liquid sucking section or at an upper layer of an end of the uppermost liquid sucking section.

15. The vaporizing method according to claim 14 , wherein a liquid sucking section which is closest to the heater from among the plurality of liquid sucking sections is supplied with a liquid having a highest boiling point from among the different kinds of liquids.

16. A vaporizer comprising:

a first liquid suction section to suck a first liquid;

a second liquid suction section to suck a second liquid;

a heating element to heat the first liquid suction section and the second liquid suction section to vaporize the first liquid and the second liquid; and

a heat insulation case;

wherein:

the first liquid suction section and the second liquid suction section are concentrically laminated in a radial direction;

a partition section is interposed between the first liquid suction section and the second liquid suction section;

an end of the first liquid suction section and an end of the second liquid suction section are disposed outside of the heat insulation case;

a discharge side end of the first liquid suction section and a discharge side end of the second liquid suction section, for vaporizing and discharging the sucked first liquid and the sucked second liquid, respectively, are accommodated in the heat insulation case; and

the heating element heats the discharge side ends.

17. The vaporizer according to claim 16 , further comprising a heat transfer section, provided between the heating element and the first liquid suction section, to transfer heat of the heating element to the first liquid suction section,

wherein the heat insulation case has a thermal conductivity lower than a thermal conductivity of the heat transfer section.

18. The vaporizer according to claim 1 , wherein:

the first liquid suction section is disposed so as to cover a periphery of the second liquid suction section;

the heating element is provided at an end of the first liquid suction section; and

the heating element (i) heats said end of the first liquid suction section to a temperature not less than a boiling point of the first liquid, (ii) sets another end of the first liquid suction section to a value less than the boiling point of the first liquid, (iii) heats an end of the second liquid suction section to a temperature not less than a boiling point of the second liquid, and (iv) sets another end of the second liquid suction section to a value less than the boiling point of the second liquid.