Steam engine

Abstract

In a steam engine 1, an inner wall face 22a of a connecting tube portion 22 is entirely formed out of a water repellent finish face 22b. Accordingly, when liquid located in a portion close to a heater 30 in a vertical direction extending tube 12 is heated, boiled and liquefied, a liquid level of the liquid in the vertical direction extending tube 12 is pushed down from a top dead center Lu to a bottom dead center Lb. At this time, a quantity of liquid drops attached onto the inner wall face 22a of the connecting tube portion 22 can be reduced as compared with a case in which the entire inner wall face 22a of the connecting tube portion 22 is not formed out of a water repellent finish face 22b.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

FIG. 1 is a view showing an outline of the constitution of the steam engine of Embodiment 1;

FIG. 2 is a view showing an outline of the constitution of the steam engine of Embodiment 2;

FIG. 3 is a view showing an outline of the constitution of the steam engine of Embodiment 3;

FIG. 4 is a view showing an outline of the constitution in the periphery of the different direction extending tube of the steam engine of a variation of Embodiment 3;

FIG. 5 is a view showing an outline of the constitution of the conventional steam engine; and

FIG. 6 is a schematic illustration for explaining problems caused in the conventional steam engine by using a partially enlarged view of the broken-line elliptical portion shown in FIG. 5.

Claims

1. A steam engine comprising: a tube into which liquid is charged;a heater for heating the liquid in the tube; anda cooler for cooling vapor generated when the liquid is vaporized being heated by the heater, whereina fluid displacement of the liquid in the tube is generated by vaporization of the liquid when it is heated by the heater and liquefaction of the vapor when it is cooled by the cooler,the heater and the cooler are arranged at an interval in the tube line formed by the tube, andat least a portion of an inner wall face of a connecting tube portion, which is a portion arranged between the heater and the cooler, is formed out of a water repellent finish face.

2. A steam engine according to claim 1, wherein the entire inner wall face of the connecting tube portion is formed out of a water repellent finish face.

3. A steam engine according to claim 1, wherein the water repellent finish face is formed when the inner wall face of the connecting tube portion is subjected to mirror finish processing.

4. A steam engine according to claim 1, wherein the water repellent finish face is formed when the inner wall face of the connecting tube portion is coated with a predetermined material.

5. A steam engine comprising: a tube into which liquid is charged;a heater for heating the liquid in the tube; anda cooler for cooling vapor generated when the liquid is vaporized being heated by the heater, whereina fluid displacement of the liquid in the tube is generated by vaporization of the liquid when it is heated by the heater and liquefaction of the vapor when it is cooled by the cooler,the heater is provided being adjacent to a portion of the tube so as to heat liquid in the portion of the tube,the heater and the cooler are arranged at an interval in the tube line formed by the tube, andthe wall thickness of at least a portion of a connecting tube portion, which is a portion between the heater and the cooler, is smaller than the wall thickness of a portion of the tube adjacent to the heater.

6. A steam engine according to claim 5, wherein the wall thickness of the entire connecting tube portion is smaller than the wall thickness of a portion of the tube adjacent to the heater.

7. A steam engine comprising: a tube into which liquid is charged;a heater for heating the liquid in the tube; anda cooler for cooling vapor generated when the liquid is vaporized being heated by the heater, whereina fluid displacement of the liquid in the tube is generated by vaporization of the liquid when it is heated by the heater and liquefaction of the vapor when it is cooled by the cooler,the heater is provided being adjacent to a portion of the tube so as to heat liquid in the portion of the tube,the heater and the cooler are arranged at an interval in the tube line formed by the tube,a connecting tube portion, which is a portion between the heater and the cooler, is formed out of a connecting tube member separate from the tube member for a portion of the tube adjacent to the heater, andthe connecting tube member and the tube member for a portion of the tube adjacent to the heater are joined to each other and formed into a continuous portion of the tube.

8. A steam engine according to claim 7, wherein the heat conductivity of material composing the connecting tube portion member is lower than the heat conductivity of material composing the tube member for a portion of the tube adjacent to the heater.

9. A steam engine comprising: a tube into which liquid is charged;a heater for heating the liquid in the tube; anda cooler for cooling vapor generated when the liquid is vaporized being heated by the heater, whereina fluid displacement of the liquid in the tube is generated by vaporization of the liquid when it is heated by the heater and liquefaction of the vapor when it is cooled by the cooler,the heater and the cooler are arranged at an interval in the tube line formed by the tube,a flowing direction of the liquid in the connecting tube portion, which is a portion between the heater and the cooler, and a flowing direction of the liquid in the portion of the tube, in which the heater is provided, are different from each other, anda gap is formed between the heater and the connecting tube portion.

10. A steam engine according to claim 9, wherein a heat insulating material member is arranged in the gap.

11. A steam engine according to claim 9, wherein the gap is provided when a recess portion is formed in a portion of the heater.

12. A steam engine according to claim 1, further comprising: an output portion for taking out a fluid displacement of the liquid in the tube, which is generated by vaporization of the liquid when it is heated by the heater and liquefaction of the vapor when it is cooled by the cooler, as mechanical energy.

13. A steam engine according to claim 1, wherein the heater is arranged in an upper portion of the cooler.