JPS58184443A - Circulating system using temperature difference pump - Google Patents

Abstract

PURPOSE:To enable heat conduction and transfer and utilization of pressure by using as a dynamic power source by obtaining a dynamic pressure of a fluid due to the expansion and contraction force of a thermal expansive body within a thermal expansion and contaction vessel generated by entrance and exit of fluids having different temperatures, and causing the fluid to flow through a circulating path or a reciprocating path. CONSTITUTION:A heated fluid collected in a first heat source 1 advances toward a direction changeover device 2 via an outgoing pipeline 8, and is introduced alternately into thermal expansion and contraction vessels 3 and 4. The heated fluid is expanded by carrying out a heat exchange by the expansive body 10 within the thermal expansion and contraction vessels 3 and 4. Then, the heated fluid returns again to the first heat source 1 via a return pipe 9 to force a circulating flow. On the other hand, operating fluids 11 and 12 transmitted with pressure due to expansion of the expansive body 10 are heat-exchanged in a second heat source 7 via an outgoing pipeline 13 provided at the intermediate with a direction changeover device 5 formed by combining a counterflow check valve and check valve and passes through a return pipeline 14, and then alternately introduced as a low temperature fluid into the thermal expansion and contraction vessels 3 and 4 through the direction changeover device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventional solar water heaters utilize natural convection and require a tank to be placed in the -E section of the heat collector in order to provide medicinal hot water. When the medicinal hot water tank is placed above ground or underground, external power is used as the circulation power.The present invention combines two or more temperature-expanding bodies of gas, liquid, and solid, and the difference in expansion caused by this is converted into a dynamic force. It is an interesting circulation system that utilizes natural energy by utilizing the natural convection of fluids, poisonous force, buoyancy, specific gravity, and convection stop valves.

This can be explained with reference to the drawings: 1) What is shown in FIG. 1 is a schematic diagram of a conventionally used solar water heater.

←l 1m2-1 uses the present invention on both sides of the roof 1. .

FIG. 2-2 is a drawing in which the plane P is omitted.

(→ Factor 3-1 is an imaginary diagram of the case where the present invention is used on the bare side of a roof, and Figure 3-2 is an abbreviated plan view.

←) FIG. 4 is a detailed system diagram of FIG. 2-2.

10 Section 5 is a detailed system diagram of FIG. 3-2.

(f) FIG. 6 is a detailed diagram of the temperature difference pump of the present invention.

Below, the system of FIG. 5 and the temperature difference pop of factor 6 will be explained.

0) The fluid heated by the heat collector H passes as shown by arrow A (solid line), flows to the lower part of the heat collector I4 while heating the expander 2 in the expansion container P, causes natural convection, and expands. body 2
expand.

Q) When the expansion body 2 inside the expansion container P expands,
The pressure inside the expansion container P increases. At this time, check valve P2
・C3 is activated and the fluid is.

As shown by arrow D (two-dot chain line), it passes through check valve Pl and convection check valve F and enters tank T. Inside the tank T, heat is exchanged by convection, creating a temperature difference between the upper and lower parts.

(3) The fluid corresponding to the pressure increase in the tank T passes through the check valve C2 from the lower part (cold water), and pressurizes the expansion body 2 in the expansion container C with cold water. The expansion body 2 contracts by being pressurized. As the expansion body 2 is contracted, cold water enters and cools the expansion body 2, causing the expansion body 2 to contract further.

(4) Comparing the expansion container P-0 here, A Internal pressure P = O・) p Fluid volume P < 0 ... Expanded body volume P) O, and the balance of the whole fish is maintained, but due to the mouth and Ha, There is a difference in weight between the expansion containers P and 0.

(5) Utilizing the difference between the expansion bodies 4 and 5, move the piston 3 and operate the fluid direction switching valve 1.
is the position of the broken line.

(6) The fluid heated by the heat collector 1-1 passes as shown by arrow B (broken line) and flows to the lower part of the heat collector +1 while heating the contracted expansion body 2 in the expansion container C. , the expansion body 2 is expanded by natural convection.

(7) Expansion capacity 11! ! As the expansion body 2 inside O expands, the pressure inside the expansion container C increases. At this time, check valves 02 and P3 operate, and the fluid flows as indicated by arrow C (dotted chain line).
Flows like check valve 01. It passes through the convection stop valve F and enters the tank T. Inside the tuck T, heat is exchanged by convection, and a temperature difference occurs between the upper and lower parts.

, 1:1 (8) #7/T inside. Pressure increases by 1'1. fluid. 1. Pressurize the expansion body 2 in the expansion container C with cold water from the lower part (cold water) through the check valve P2. By being pressurized 3-, the inflatable body 2 contracts. By being contracted, cold water enters, and the heated expansion body 2 is cooled and contracted.

(9) Comparing the expansion containers P and C, we find that 2 Internal pressure p=Q E Fluid volume P>0 Expanded body volume P<C, and the overall volume is balanced, but E and H 1 more expand. There is a difference in weight between containers P and 0.

Using the difference between the qO expansion bodies 4 and 5, the piston 3 is moved, and the fluid direction switching valve 1 is in the position indicated by the solid line, and enters the operation of ++).

tllll Temperature pump circulation system cycle is 1~
Continuing with 10, the medicinal hot water tank can be placed above ground or underground by combining the check valve and check valve.

(G) The expansion container P-0 may be a fixed type with a small expansion/contraction rate due to temperature, or may be a fixed type with a large expansion/contraction rate that allows fluid to pass through.
It is sufficient to take advantage of the change in capacitance. (Combination of bimetals, etc.) (h) Expanding body 2 is made of an expanding body (
Either a sealed type (Figure 7) or an open type (Figure 8) may be used.

(S) The fluid direction switching valve l occurs in the expansion body 2.

It must be set so that the flow always flows in one direction using the fluid volume, the difference due to the volume of the expanding body, gravity, buoyancy, etc. as the driving force for the fluid direction switching valve. Must be.

(Reverse 11: The valve may be of the swing type or riff type, as long as it is operated by convection force.

(Ol vs. itl: Valves are important in the system.

When the pipe is long, it is divided into sections to prevent convection of temperature differences within the pipe.

The convection stop valve (FIG. 10) will be explained next.

(1) The ball (valve) l used in the valve is buoyant. If the arrow A is reversed for the fluid, it is sufficient to make the specific gravity larger than that of the fluid.

Ball (valve) 1 has elasticity, gas and of The specific gravity can be changed by 1 by replacing the water and liquid.

(2) The spherical seat (valve seat) 2 may be made of an elastic body or a steel body. If the fluid does not flow in the direction of arrow A, the buoyant force will always cause the ball (valve) 1 to be in the position shown by the broken line, creating a gap between the ball (valve) 1 and the ball seat (valve seat) 2, where the reverse valve and convection stop function. It's fine if there isn't one.

(3) The catch seat 3 is of such a structure that the conduit ball (valve) 2 will not be obstructed when the flow A flows rapidly.

f4. ,+1-o,4.1,nsc Arashi, Tsuyo, a)l
, installed to select ball seat (valve seat) 2. In addition, union type, screw molding, etc. are possible.

(5) Figure 11 is a variation of the swing type, and Figure 1O
I showed something that works the same way.

As mentioned above, convection check valves (check valves) utilize buoyancy and gravity.

(WaJ) In Figure 1.1, the piston 1, like the piston 2, can be considered as a low-temperature pump by utilizing the force of movement.

As described above, the present invention is a temperature difference pump circulation/ground stem that utilizes solar heat and natural energy, and utilizes the expansion, buoyancy, specific gravity, etc. of objects through a combination of pipes and valves. , it becomes a two-run stem that can be placed far away.

By using the difference between the ground temperature and the groundwater temperature.

This is an interesting invention that serves as a non-powered pump for pumping underground water.

[Brief explanation of the drawing]

:1・ Figure 1 shows a conventional solar water heater. FIG. 2-1 is an imaginary diagram of the case where the present invention is used using the entire roof. 7- FIG. 2-2 is a schematic plan view of FIG. 2-1. FIG. 3-1 is an imaginary diagram of the present invention when used on the south side of the roof. 3-2 is a schematic plan view of FIG. 3-1. FIG. 4 is a detailed schematic diagram of FIG. 2-2. FIG. 5 is a detailed schematic diagram of FIG. 3-2. FIG. 6 is a detailed diagram of the temperature difference pump. P is an expansion container C, 廝■] is a heat collector Pl, P2, P3, 01, C2, and C3 are check valves. F is the convection stop valve T is the medicinal water tank line, A-B-0-D is the flow direction line 1, is the fluid direction switching valve 2, is the expansion body 3, is the piston = 8-4 is the expansion body 5 Figure 7 shows the sealed expansion body type. Figure 8 shows the open type. Figure 9 shows the convection stop valve. Figure 1O shows the valve 2, valve seat 3, seat 4, and Figure 11 shows a case where the expansion body is of a piston type and the pump is operated. Patent applicant Shigeki Sato 1) Misako Naka
Jie Ziran 11 Procedural Amendment Commissioner Kazuo Wakasugi 1, Indication of the case 1982 Patent Application No. 34403 2, Name of % Ming Temperature Difference Pump Circulation System 3, Relationship with the person making the amendment Applicant 4 , Agent Address: Hashimoto Building 6, 4-10 Nishikicho, Sendai City, Miyagi Prefecture
, the number of inventions increased by the amendment 7, column 8 for a brief explanation of the drawings of the specification subject to the amendment, contents of the amendment (1) Change "C is this" to "C is the same" on page 9, line 11 in the specification. "Expansion container" is corrected. (2) Same, page 10, line 2, “5 is for you” is corrected to read “5 is also an expansion body.” (3) On the same page, line 4, ``Figure 8 is your open type'' is corrected to ``Figure 8 is the open type of the expander''. (4) On the same page, in line 6, "FIG. 10 is the same" is corrected to "FIG. 10 is also the convection stop valve." Written amendment to the above procedure June 3, 1980 Kazuo Wakasugi, Commissioner of the Patent Office 1. Indication of the case 1981 Patent Application No. 34403 2. Title of the invention Temperature difference circulation method 3. Relationship with the person making the amendment Application. Address: Kanta 72, Shimoaiko, Miyagi-machi, Miyagi-gun, Miyagi Prefecture Name: Shigeki Sato 4, Agent 6, Number of inventions to be increased by amendment □ Near, column for the name of the invention in the application subject to amendment, description and Drawing 8, contents of amendment (1) The name of the invention in the application is corrected to 1. Temperature difference circulation method. (2) Amend the specification as shown in the attached sheet. (3) Correct the piles in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, and Figure 6 in the drawings as shown in the attached sheet. (4) Deletion of stakes 9, 10, and 11 from the drawing. Above 1:11 (2) Description (correction) Title of the invention Temperature difference circulation method Claim 1 A heating fluid supplied from a high-temperature first heat source has a built-in expansion body that expands and contracts due to temperature changes. The actuator is guided into the first and second expansion/contraction containers, and is transferred to the expanding bodies of the first and second expansion/contraction containers, and is pushed out within the first and second expansion/contraction containers. A temperature difference circulation method in which the fluid is circulated or reciprocated, in which heat is released from a second heat source in a low temperature range through a convection stop valve, and the fluid returns to the first and second expansion and contraction containers. 2. When the heating fluid is supplied to the first expansion/contraction container, the working fluid is pushed out and converted into circulating or reciprocating pressure, and due to this pressure, heat is released into the second expansion/contraction container. Part of the working fluid is supplied to contract the expansion body, and the heating fluid is alternately used to expand the first and second expansion bodies using a direction switching device that utilizes a difference between the first and second expansion and contraction containers. 2. A temperature difference circulation method according to claim 1, wherein the supply is controlled into a shrink container. DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to, for example, a solar hot water supply system, by combining two thermal expansion/contraction containers each having a built-in thermal expansion body, and regulating the flow of fluid to generate expansion/contraction force as a power source. The present invention relates to a temperature difference circulation method using a temperature difference source. Circulation systems such as conventional circulation pumps always rely on other power sources (
In view of this, the present invention is based on the principles of pumps and air engines that require other power sources. The dynamic pressure of the fluid is obtained from the expansion/contraction force of the thermal expansion body in the thermal expansion/contraction container, which is generated by the input and output of different fluids with different temperature differences, and is used as a power source.1. The main objective is to propose a temperature difference circulation method that allows circulation through a circulation path or a reciprocating path and can be used to transport heat and transmit pressure. The basic structure of the temperature difference circulation method of the present invention is as shown in FIG. . And, the working fluid 11,12 to which the pressure due to the expansion of the expansion body 10 in the thermal expansion/contraction containers 3, 4 is transmitted is transferred to an outgoing pipe line with a direction switching device 5 having a combination of a convection check valve and a check valve in the middle. Traction force m't through 13
i, kmlk% After exchanging heat with the second heat source 7, it passes through the return pipe line 14, and then passes through the direction switching device 5 again to the thermal expansion and contraction containers 3, 4.
The structure is such that the low-temperature fluid is introduced alternately into the Next, to explain the basic operation shown in FIG.
The heated fluid, which has reached a high temperature due to the heat collecting section supplied with heat from the heat source 1, first passes through the pipe line 8 via the direction switching device 2 and exchanges heat with the expansion body 10 in the thermal expansion/contraction container 3. The expanding tree 10 expands, and the working fluid 1 receives the expansion amount.
Dynamic pressure is formed at 1. The working fluid 11 passes through the outgoing line 13 and reaches the direction switching device 5 . Then, heat exchange is performed at the second heat source or the heat release part T, and the temperature becomes low. Then, the working fluid passes through the direction switching device 5 from the return pipe line 14 and is led into the thermal expansion/contraction container 4, where the expansion body 10 is pressurized and contracted by the low temperature working fluid that has undergone heat exchange. Due to the contraction of the expandable body 10, the working fluid 11 is further sucked, which causes the expandable body 10 to further contract. At this time, when comparing thermal expansion and contraction containers 3 and 4, thermal expansion and contraction containers 3 and 4 are compared.
The amount of fluid inside is small and the temperature of the expansion body 10 is high. The temperature difference and the difference in mass between the thermal expansion and contraction vessels 3 and 4 are used in conjunction with the control shaft to operate the direction switching device 2 when the maximum required amount of working fluid is transferred. Therefore, the heated fluid heated to a high temperature by the first heat source 1 passes through the outgoing pipe line 8 via the activated direction switching device 2, and exchanges heat with the contracted expansion body 10 in the thermal expansion/contraction container 4. Since the first heat is returned to the source 1 through the return pipe 9, the contracted expansion body 10 in the thermal expansion/contraction container 4 expands, and the working fluid to which the expansion amount is transferred is formed. A dynamic pressure is created at 12. The working fluid 12 passes through the conduit 13, passes through the directional switching device 5, and undergoes heat exchange at the second heat source or heat emitting section 7, resulting in a lower temperature. Then, it passes through the pipe line 14, passes through the direction switching device 5, and is supplied into the thermal expansion/contraction container 3, where the expanding body 10 is contracted and cooled by the low-temperature working fluid 12 with which it has been heat exchanged, thereby causing further contraction. and aspirate. At this time, by utilizing the difference generated between the thermal expansion/contraction units 3 and 4, in conjunction with the control shaft, the direction switching device 2 is operated when the maximum required amount of working fluid is moved, and the above-mentioned 1 to 1 return to the initial state. The cycle will be repeated again. Next, solar heat is used as the heat source, a solar collector is used as the heat generating part, water is used as the heating fluid, a pair of left and right expansion/contraction containers is used, and the directional control valve is operated using the temperature difference between the left and right expansion/contraction containers. The expansion/contraction container contains an expansion body filled with gas,
A convection stop valve is installed in the working fluid path, water is used as the working fluid, a hot water storage tank is used as the heat release part, and the temperature is a combination of a direct current method in which the working fluid circulates and a confluence method in which the working fluid and heated fluid are mixed. An example of a differential circulation device will be described in detail with reference to the drawings. FIG. 2 is a system diagram showing an example of a temperature difference circulation device. 1
Reference numeral 8 denotes a solar collector, which is of a type in which, for example, water is circulated in a pipe to obtain a high-temperature heating fluid, and uses solar heat as its heat source. First and second expansion and contraction containers 21 and 22 are connected to the heat collector 18 via a directional valve 19. The first and second expansion/contraction containers 21 and 22 are configured such that the quality and quantity of each built-in expansion body are set to 1=1, and the expansion bodies are heated and cooled with heating and cooling fluid, thereby causing expansion and contraction of the expansion bodies. is transmitted to the fluid as pressure, and when the inflatable body expands, the fluid flows out to the outside, and when the inflatable body contracts, the fluid is sucked from the outside. Three ports are provided in the upper part of each expansion/contraction container 21, 22, each of which has a first port 21.
a. 22a and the switching valve 19 are connected to each other. Heating fluid from the heat collector 18 is therefore supplied alternately to the first and second expansion and contraction vessels 21,22. The expansion body 23 contained in each expansion/contraction container 21, 22 can be composed of a gas such as air, argon gas, hydrogen gas, a liquid such as acetone or alcohol, or a combination of a solid such as a metal and a diaphragm. in particular,
It is selected depending on the temperature to be set, temperature difference, and purpose of use. However, for ease of implementation, as shown in FIG. 2, for example, a gonograph having four partitions, in which a fluorocarbon gas or the like 30 is injected into the membrane 24, and laminated vertically can be adopted. Each boat 21d, 22d is provided at the bottom of each expansion/contraction container 21, 22 to form a circulation flow path to the heat collector 18, and is connected to a heating pipe 27 via a convection stop valve 25, 26, respectively. It is connected to the heat collector 18 . In order to automatically switch the directional control valve 19, a cylinder 29 containing a piston 28 is formed in communication between the expansion and contraction containers 21, 22. That is, the piston 28 has a connecting rod 28a extending upward.
are connected, and expansion bodies 35a and 35b are inserted on the left and right sides. The tip of the connecting rod 28a is interlocked with a protrusion 19b formed continuously with the leaf valve 19a of the directional control valve 19. Therefore, by supplying the heating fluid to the first expansion/contraction container 21 side, the expansion body 35a expands and the second expansion/contraction container 21 expands.
Since the expansion member 35b on the side of the first expansion/contraction container 22 is contracted, the piston 28 moves to the right, so that the leaf valve 19a prevents the flow toward the first expansion/contraction container 21. The air is switched from the path to the second expansion/contraction container 22 side. The mesh 2i1) of each expansion-deflation container 21.22. 22b is connected to a confluence working fluid pipe 40 through convection check valves 31 and 32, and is connected to, for example, a hot water storage tank 41 installed on the lower side through a plurality of convection check valves 42. In addition, convection normal check valve 25, 26° 31.32, 33.34
may be of the swing type, lift type or other types. Therefore, the working fluid is heat exchanged by the heat exchanger 41 through the piping 40, and □ is merged again through the piping 43. Therefore, the month of each container 21.22:::, 21C, 22
A confluence pipe 43 is connected to C through convection stop valves 33 and 34, respectively. The convection stop valves 31 and 32 are connected to each container 2.
1.22, and the valve 33.
34 is arranged to prevent outflow from each container 21,22. Incidentally, the outer walls of each container 21 and 22 and each pipe 40 and 43 can be covered with a heat insulating material to prevent heat from being released to the outside. FIG. 3 shows the state of the piping in connection with each of the convection stop valves 31, 32, 33, and 34. Expansion and contraction are carried out alternately in each of the expansion and contraction units 21 and 22, and due to this, reciprocating fluid pressure is constantly applied to each of the conduits A and B. A plurality of convection stop valves 42 are provided at regular intervals for the purpose of preventing convection due to a temperature difference within the pipe line that occurs when the pipe line 40 extends in the vertical direction. FIG. 4 is a sectional view showing an example of the convection IE valve 42 of the supply pipe 40aIII. A ball valve 45 is mounted inside a heat-insulating housing 43a, 431) made of, for example, synthetic resin, which is divided into upper and lower halves and integrated with bolts 44. The material of the ball valve 45 is selected so that its specific gravity is smaller than the specific gravity of the heating and cooling fluid, such as hot water, and the material is also selected to have elasticity. The housing 43a can be provided with a ball seat 46, which may be made of an elastic body or a rigid body.
In close contact with the air, it acts as a check and a convective action. Further, the housing 43b is provided with a ball seat 47 with long legs, which functions so that the flow path will not be blocked even if fluid pressure is applied to the ball valve 45 from above. In addition, the housings 43a, 43
b can also be made of ceramic. On the other hand, as shown in FIG. 5, the convection IL valve 48 on the return pipe 40b side has almost the same structure except for the ball valve 49, but the weight of the ball valve 49 is selected to be heavier than the working fluid. And it can be installed upside down. That is, since the working fluid is transferred upward through the return pipe 40b, the ball valve 49 is always pushed upward by the fluid dynamic pressure, but when no fluid dynamic pressure is applied, the ball valve 49 is pushed up against the ball seat due to its weight. 50 and has a positive convection effect. FIG. 6 is a sectional view showing an example of a swing type valve showing another example of the convection stop valve. The basic structure is the same as the example shown in FIG. 4, but durability is taken into account in response to the reaction force during back-checking for large diameter applications. That is, semicircular leaf valves 52a, 521) are swingably supported on the inner wall of the housing 51, and a fixed valve seat 53 is provided for directional installation. In addition, in order to improve convection within the pipe (housing),
Several stages of swing valves can be provided. leaf valve 5
The material is selected so that the specific gravity of 221°521] is smaller than the specific gravity of hot water, as in the example shown in FIG. Therefore, when no fluid pressure is applied, each leaf valve 52a. 521] is in contact with the valve seat 53 due to buoyancy. The casings of the valves 25, 26, 31, 32, and 33, 34 are all made of a heat insulating material, such as synthetic resin, and the valves are also constructed in the same way to prevent convection and heat conduction due to temperature differences in the working fluid. It can be prevented. Next, the operation of the example shown in FIG. 2 will be explained. The heating fluid heated by the heat collector 18 is first supplied to the first expansion/contraction container 21 through the directional control valve 19 by natural convection.
The heat is absorbed by the expanding body 23 while passing through the check valve 25 and returning to the heat collector 18. In this case, the pressure from the first container 21 does not flow into the second container 22 due to the function of the inverted I-to valve 26. Therefore, the expansion body 23 in the first expansion/contraction container 21 expands due to this closed loop cycle of the heating fluid, so that the pressure in the first container 21 increases. At this time, the one-way valve 32 is operated to prevent the backflow into the expansion/contraction container 22, and the heated fluid flows out through the check valve 31 and into the working fluid piping 40 by the operation of the check valve 32. The heated fluid, that is, the working fluid passes through the convection stop valve 42 with the transfer of pressure and heat, and heat exchange is performed within the heat exchanger 41 by natural convection or forced convection. There will be a temperature difference between the two. The working fluid that has been heat exchanged and cooled by the heat exchanger 41 is transferred to the pipe line 40
and each expansion-deflation container 21.2 through a check valve 33.34.
However, since the check valve 33 is not activated, the cooled working fluid does not flow into the first container 21 but flows into the second expansion/contraction container 22. The expansion body 23 is pressurized by the cooled working fluid, the temperature decreases, and the expansion body 23 contracts. Upon deflation, further cooled working fluid is drawn into expansion vessel 22 to maintain the pressure within second vessel 22 . At this time, the first and second containers 2
1.22, both internal pressures are the same due to the movement of the working fluid, but the temperature inside the first container 21 is lower than that of the second container 2.
Since the temperature is higher than the temperature inside 2, the expansion body 35a expands and the expansion body 35b contracts. The piston 28 communicating with each container 21, 22 is therefore
The pressures of the expansion bodies 35a and 35b lose their balance and move to the right, so that the directional control valve 19 no longer switches the heating fluid direction. As a result, the heated fluid heated in the heat collector 18 flows into the second expansion/contraction container 22 , and while expanding the contracted expansion body 23 , it passes through the check valve 26 at the bottom of the second container 22 and enters the heat collector. Return to 18. Due to this closed-loop cycle of the heated fluid, the expansion body 23 in the second container 22 expands from time to time, so that the J pressure in the second container 22 increases. At this time, the reversal valve #34 is activated, and the excess heated fluid flows out into the pipe 40 through the check valve 32. Then, the heating fluid passes through the convection stop valve 42 again as a working fluid, and heat exchange is performed inside the heat exchanger 41 by the convection effect, so that a temperature difference occurs between the upper and lower parts of the heat exchanger 41. heat exchanger 4
The working fluid that has been heat exchanged and cooled in the first section flows into each expansion/contraction container 21 through the pipe line 40 and the check valve.
Since the check valve 34 is operating, the flow into the container 22 is
No cooled working fluid flows in. The cooling working fluid flowing into the first container 21 pressurizes the expansion body 23 and lowers its temperature, thereby causing it to contract. Upon contraction, further cooled working fluid flows into the first container to maintain pressure within the first container.
into the container 21. At this time, the internal pressures of the first and second containers 21 and 22 are the same due to the movement of the working fluid, but the temperature inside the second container 22 is higher than the temperature inside the first container 21. The expansion body 35b expands, and the expansion body 35a contracts. Therefore, the piston 28 communicating with each container 21, 22 loses the balance of the expansion body 353, 351) and moves to the left, so that the direction of the heated fluid of the directional control valve 19 is changed, and as described above, the piston 28 is moved to the left. The working fluid will be circulated repeatedly. Next, at night, the heat collector 18 is rapidly cooled and the temperature of the fluid in the heat exchanger 41 becomes relatively high. A heat transfer of temperature within 41 takes place. At this time, as shown in FIG. 3, the ball valve 45 of the convection stop valve 42 provided on the supply pipe 40a side moves upward because it is lighter than the working fluid and there is no flow in the pipe 40. Since the casings 43a and 43b contact the bulb seat 46, convection of the liquid and movement of temperature are blocked.Of course, since the casings 43a and 43b are insulators, heat conduction from the pipe line is prevented. Similarly, in the convection IE valve 48, since the ball valve 49 is in contact with the ball seat 50, heat transfer of the fluid is blocked.In this way, the present invention allows the heating fluid and the working fluid to circulate by repeating the above cycle. When solar heat is used as a heat source as shown in the example in Fig. 2, a temperature difference engine that does not require any other i-power can be obtained.The configuration shown in Fig. 2 is as follows: These are merely specific examples suitable for implementation, and are not intended to limit the present invention in any way.In other words, as for heat sources, it is important to combine them in such a way that a temperature difference can be created. Similarly, the expanding body is not limited to the above-mentioned examples, and may be a mixture of the above-mentioned gases, liquids, solids, or aqueous solutions.Furthermore, liquefaction that expands depending on temperature and generates vapor can be used. Gas etc. can be adopted. That is, the present invention
Basically, it is a circulation due to temperature difference, and the high temperature range is 100℃ μ
Since it can be applied to a wide temperature range from above to low temperatures below 0°C, it specifically depends on the temperature to be set, the temperature difference,
It will be selected as appropriate depending on the purpose of use. Further, the expansion/contraction container can be used as a means for transmitting heat led from the first heat source and the second heat source by an expansion body and a working fluid, or a means for transmitting heat by a combination of an expansion body and a working fluid. For example, a container made of stretchable and flexible resin, such as a rubber container (see Fig. 7), or a sealed container in which an expanding body is enclosed in a piston-type rigid container (see Fig. 8), etc. The configuration is appropriately selected depending on the requirements of the expansion body, working fluid, and set temperature range. As described above, according to the present invention, thermal energy can be transported by the working fluid without requiring any other power. Therefore, a large amount of solar hot water can be stored in an underground tank without installing a circulation pump as in the past, and the high temperature water can be used as needed by the method of the present invention. Since the present invention operates as long as there is a difference in temperature regardless of whether it is in a high temperature range or a low temperature range, there are no restrictions on the installation environment and it can be installed in locations where there may be heat. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a system diagram showing the configuration of the method of the present invention, Figure 2 is a system diagram showing an example of a circulation system implementing the invention, and Figure 3 is an explanation of the connecting piping of the convection stop valve. Figures 4 and 5 are cross-sectional views showing an example of a convection stop valve, Figure 6 is a cross-sectional view showing another example of a convection stop valve, and Figures 7 and 8 are examples of an expansion/contraction container. FIG. 1... First heat source, 2... Direction switching device, 3.4...
- Thermal expansion/contraction container, 7... Second heat source, 10... Expansion body, 31.32, 33.34... Convection stop valve. Applicant's agent Patent attorney Takashi Akiyama Figure 3 Figure 4 Figure 5 Figure 6 232-

Claims (1)

[Claims] A temperature difference pump that is powered by the difference in expansion caused by inflating, and uses natural convection of fluid, gravity, buoyancy, specific gravity, and natural energy. (b) Temperature difference pump circulation system using a convection stop valve 0