JP5467169B1 - Power generator - Google Patents

Abstract

The present invention provides a power generation member and a power generation device capable of ensuring good thermal conductivity between a high temperature source or a low temperature source and a thermoelectric conversion element and realizing temperature difference power generation with high power generation efficiency.
In a power generation member, a metal plate for heat conduction 3 is disposed and bonded to both ends of the thermoelectric conversion element 2 with the thermoelectric conversion element 2 interposed therebetween. A Peltier element can be used as an example of the thermoelectric conversion element 2. A heat absorbing metal plate 4 is joined in contact with one of the heat conducting metal plates 3, and a plurality of metal pins 5 are attached to the heat absorbing metal plate 4. Further, a heat release metal plate 6 is joined in contact with the other heat conducting metal plate 3, and a plurality of metal pins 5 are attached to the heat release metal plate 6. Joining surface of thermoelectric conversion element 2 and heat conducting metal plate 3, joining surface of heat conducting metal plate 3 and heat absorbing metal plate 4, joining of heat conducting metal plate 3 and heat releasing metal plate 6 Grease is applied to the surface.
[Selection] Figure 1

Description

  The present invention relates to a power generation member that performs temperature difference power generation using a thermoelectric conversion element such as a Peltier element, and a power generation apparatus to which this power generation member is applied.

  A Peltier element is widely known as an element that generates a Peltier effect in which heat is transferred from one metal or semiconductor to the other metal or semiconductor when a current is passed through a junction between two kinds of metals or semiconductors. It is also well known that power can be generated using the Seebeck effect, which is a phenomenon in which an electromotive force is generated when a temperature difference is applied to both ends of the Peltier element.

  An example of temperature difference power generation using a temperature difference between hot water and cold water using a Peltier element is described in Patent Document 1. Further, Patent Document 2 describes an example of temperature difference power generation by utilizing overheating of asphalt such as roads.

JP 2013-21899 A JP2013-8780A

  The one described in Patent Document 2 has an electrode plate A that is in contact with an asphalt road surface such as a road serving as a high-temperature heat source, and is in contact with a water and sewage pipe, a water storage groove, and the like that serves as a low-temperature heat source. The plate B and the electrode plate C are installed, the electrode plate A and the electrode plate B are connected in the vertical direction by a p-type semiconductor, and the electrode plate A and the electrode plate C are connected in the vertical direction by an n-type semiconductor. The electrode plates B and C are connected by conducting wires to form a closed circuit.

  However, since the electrode plate A is installed immediately below the asphalt road surface such as a road that becomes a high-temperature heat source, distortion due to vibrations received from a vehicle traveling on the asphalt road surface, or because the asphalt road surface is heated to a high temperature. The electrode plate A is directly subjected to the bending, and a gap is easily generated between the asphalt road surface and the electrode plate A, between the electrode plate A and the p-type semiconductor, and between the electrode plate A and the n-type semiconductor.

  When such a gap is generated and an air layer is interposed between the high-temperature source and the thermoelectric conversion element, the air is adiabatic, so that the thermal conductivity from the high-temperature source is reduced and connected to the electrode plate A. It becomes difficult for heat to be transmitted to the end faces of the p-type semiconductor and the n-type semiconductor. As a result, a sufficient temperature difference cannot be realized, and the power generation capacity decreases. In addition, this circuit configuration has a problem that it is difficult to obtain a sufficiently large current.

  As described above, how to ensure thermal conductivity with a high-temperature source or a low-temperature source is an important issue in order to make temperature difference power generation function sufficiently. The present invention has been made in view of such circumstances, and it is possible to ensure good thermal conductivity between a high-temperature source or a low-temperature source and a thermoelectric conversion element, and to realize temperature difference power generation with high power generation efficiency. An object of the present invention is to provide a power generation member and a power generation device that can be used.

  In order to solve the above problems, the power generation member of the present invention includes a thermoelectric conversion element, a heat conducting metal plate joined to both ends of the thermoelectric conversion element, and one of the heat conducting metal plates. A heat-absorbing metal plate joined to the other heat-conducting metal plate and a heat-dissipating metal plate joined to the other heat-conducting metal plate, and a joining surface between the thermoelectric conversion element and the heat-conducting metal plate Grease is applied to the joint surface between the heat conducting metal plate and the heat absorbing metal plate, and the joint surface between the heat conducting metal plate and the heat releasing metal plate.

  A thermoelectric conversion element is an element that converts heat and electric power, and utilizes the Seebeck effect in which an electromotive force is generated when two different metals or semiconductors are joined and a temperature difference is generated between both ends thereof. In order to obtain a large potential difference, it is preferable to use a pn junction in which a p-type semiconductor and an n-type semiconductor are combined. The heat absorbing metal plate absorbs heat from a high temperature source, and one end face of the thermoelectric conversion element is brought into a high temperature state by the heat conduction action of the heat conducting metal plate joined to the heat absorbing metal plate. Further, the heat release metal plate releases heat to the low temperature source, and the other end face of the thermoelectric conversion element is in a low temperature state by the heat conduction action of the heat conduction metal plate joined to the heat release metal plate. .

  An electromotive force is generated in principle when a temperature difference occurs between both ends of the thermoelectric conversion element. However, simply using the thermoelectric conversion element takes time to absorb heat from the high temperature source and release heat to the low temperature source. It takes a considerable amount of time to generate the temperature difference required for obtaining the electromotive force at both ends of the thermoelectric conversion element. Also, if the temperature difference between the high temperature side end face of the thermoelectric conversion element and the high temperature source, or the temperature difference between the low temperature side end face of the thermoelectric conversion element and the low temperature source is large, a sufficient temperature difference will be generated at both ends of the thermoelectric conversion element. Because power generation is not possible, power generation efficiency decreases.

  Such a situation is likely to occur when a gap is generated between the high temperature source or the low temperature source and the thermoelectric conversion element, an air layer is present, and the thermal conductivity is lowered. In the present invention, the heat conducting metal plate and the heat absorbing metal plate are joined on the high temperature source side, and the heat conducting metal plate and the heat releasing metal plate are joined on the low temperature source side. Therefore, even if the heat-absorbing metal plate in contact with the high-temperature source or the heat-dissipating metal plate in contact with the low-temperature source is subjected to bending or distortion, the heat-conducting metal plate absorbs and corrects this bending or distortion. Therefore, the adhesiveness with the thermoelectric conversion element is not inhibited, and good thermal conductivity is ensured.

  Grease is also applied to the joint surface between the thermoelectric conversion element and the heat conducting metal plate, the joint surface between the heat conducting metal plate and the heat absorbing metal plate, and the joint surface between the heat conducting metal plate and the heat releasing metal plate. Is applied so that the respective bonding surfaces are brought into close contact with each other. Therefore, it can prevent that a clearance gap is formed in a joint surface and an air layer intervenes, and can improve thermal conductivity.

  With the above configuration, the thermal conductivity between the high temperature source or the low temperature source and the thermoelectric conversion element is maintained in a good state, the temperature difference between the high temperature side end surface of the thermoelectric conversion element and the high temperature source, or the low temperature side of the thermoelectric conversion element Since it is possible to realize a state in which there is almost no temperature difference between the end face and the low-temperature source, even if the temperature difference between the high-temperature source and the low-temperature source is relatively small, it is possible to perform temperature difference power generation that can provide a sufficient amount of power generation . Therefore, the conditions applicable to the temperature difference power generation performed so far are relaxed and can be widely used, which contributes to the promotion of popularization.

  The power generation member of the present invention preferably includes a pin attached to the heat-absorbing metal plate and the heat-dissipating metal plate.

  Pins are attached to the heat absorbing metal plate and the heat releasing metal plate to promote heat absorption from the high temperature source so that the high temperature side end face of the thermoelectric conversion element reaches high temperature in a short time. In addition, the heat release to the low temperature source can be promoted so that the low temperature side end face of the thermoelectric conversion element can reach a low temperature in a short time. As a result, it is possible to shorten the time required for starting the temperature difference power generation by the thermoelectric conversion element and improve the power generation efficiency.

  The power generation device of the present invention is a power generation device formed by incorporating the power generation member of the present invention, and is attached in contact with the heat absorbing metal plate when the outside air is hotter than the ground or water. When the tile is on the high-temperature source side and the heat-dissipating metal plate is placed on the surface or on the water or in the water channel and becomes a low-temperature source side to perform temperature difference power generation, the outside air is at a lower temperature than the ground or water The tile attached in contact with the heat-dissipating metal plate is on the low-temperature source side, and the heat-absorbing metal plate is disposed on the ground surface or on the water or in the water channel to perform the temperature difference power generation on the high-temperature source side. Features.

  When the outside air is hotter than the ground or water, such as in the summer, the tiles become the high temperature source side due to the heat obtained by irradiating the sunlight with sunlight, and the heat release metal plate is By being arranged on the water or in the water channel, the temperature difference power generation is performed by becoming the low temperature source side. In addition, when the outside air is cooler than the ground or water, such as in winter, the tile is on the low temperature source side, and the heat absorbing metal plate is placed on the ground surface, on the water, or in the water channel, so Temperature difference power generation is performed on the side. In this way, power generation is possible as long as there is a temperature difference between the outside air and the ground or water, and power can be generated by a simple method simply by installing a tile-shaped object on the surface or on the water or in a water channel. .

  Further, the power generation device of the present invention is a power generation device formed by incorporating the power generation member of the present invention, and is attached in contact with the metal plate for heat absorption when the outdoor is hotter than indoors. Wall material or roofing material is on the high temperature source side, the heat release metal plate is placed in the space inside the wall material or roofing material and becomes the low temperature source side to perform temperature difference power generation, and the outdoor is at a lower temperature than indoors In some cases, the wall material or roof material attached in contact with the metal plate for heat release is on the low temperature source side, and the metal plate for heat absorption is arranged in the space inside the wall material or roof material and is on the high temperature source side. The temperature difference power generation is performed.

  When the outdoor temperature is higher than the indoor temperature, such as in summer, the wall material or roof material attached in contact with the metal plate for heat absorption is the high temperature source side, and the metal plate for heat release is the wall material or roof material. By being arranged in the inner space and becoming the low temperature source side, temperature difference power generation is performed. In addition, when the outdoor is colder than the room, such as in winter, the wall material or roof material attached in contact with the heat release metal plate is the low temperature source side, and the heat absorption metal plate is the wall material or By being arranged in the space inside the roof material and becoming the high temperature source side, temperature difference power generation is performed. As described above, power generation is possible as long as there is a temperature difference between indoors and outdoors, and power generation is possible with a structure in which the power generation member of the present invention is simply incorporated into a building material such as a wall material or a roof material. High nature.

  In the power generation device of the present invention, it is preferable that the pin attached to the heat-dissipating metal plate is in an open state at the end opposite to the side fixed to the heat-dissipating metal plate.

  When the metal plate for heat release is arranged on the ground surface, the pin attached to the metal plate for heat release is buried in the ground, but it is opposite to the side fixed to the metal plate for heat release. When the end on the side is in the open state, soil containing moisture enters the inside of the pin, and heat dissipation from the metal plate for heat release through the pin is promoted. Further, when the heat release metal plate is disposed on the water or in the water channel, water enters the pin, and therefore, heat dissipation from the heat release metal plate through the pin is promoted.

  Furthermore, when the heat-dissipating metal plate is placed in the space inside the wall or roof material and the temperature difference power generation is performed on the low-temperature source side as in summer, air flows into the pin. The heat dissipation from the metal plate for heat release through the pin is promoted. Also, in the winter, when the wall material or roofing material attached in contact with the heat release metal plate is on the low temperature source side for temperature difference power generation, air flows into the pin, Heat dissipation from the metal plate for heat release through the metal is promoted.

  According to the present invention, since it is possible to ensure good thermal conductivity between a high-temperature source or a low-temperature source and a thermoelectric conversion element, a power generation member and a power generation apparatus capable of performing temperature difference power generation with high power generation efficiency are realized. be able to.

It is a figure which shows the structure of the electric power generation member which concerns on embodiment of this invention. It is a top view of the power generation member concerning the embodiment of the present invention. It is the block diagram which extracted and represented one thermoelectric conversion element. It is a figure which shows the other example of the structure of a pin. It is a figure which shows the structure of the electric power generating apparatus which concerns on 1st embodiment of this invention. It is a figure which shows the structure of the electric power generating apparatus which concerns on 2nd embodiment of this invention.

Below, the electric power generation member and electric power generation apparatus of this invention are demonstrated based on the embodiment.
In FIG. 1, the structure of the electric power generation member which concerns on embodiment of this invention is shown.
In the power generation member 1, the heat conducting metal plates 3 are disposed and bonded to both ends of the thermoelectric conversion element 2. A Peltier element can be used as an example of the thermoelectric conversion element 2.

  A heat absorbing metal plate 4 is joined in contact with one of the heat conducting metal plates 3, and a plurality of metal pins 5 are attached to the heat absorbing metal plate 4. Further, a heat release metal plate 6 is joined in contact with the other heat conducting metal plate 3, and a plurality of metal pins 5 are attached to the heat release metal plate 6. The metal plate 3 for heat conduction, the metal plate 4 for heat absorption, and the metal plate 6 for heat release can be formed of a metal such as aluminum or titanium in order to increase heat conductivity, but are not limited to this and are good. Other materials may be used as long as sufficient thermal conductivity can be ensured.

  The pin 5 is a columnar object extending in a direction perpendicular to the contact surface with the heat absorbing metal plate 4 or the heat releasing metal plate 6. The pin 5 can be formed of a metal such as aluminum or titanium, or a hard plastic in order to increase thermal conductivity, but is not limited to this, and other materials can be used as long as good thermal conductivity can be secured. May be.

  When the pin 5 comes into contact with a high temperature source or a low temperature source, the pin 5 has a function of increasing the contact surface area to increase the thermal conductivity. Depending on the temperature difference between the high temperature source and the low temperature source and the situation in which the pin 5 is used, The shape and number of the pins 5 are determined as appropriate. Moreover, the mechanical strength at the time of installation can be improved by attaching the pin 5.

  The heat conducting metal plate 3 and the heat absorbing metal plate 4 are joined on the high temperature source side, and the heat conducting metal plate 3 and the heat releasing metal plate 6 are joined on the low temperature source side. Thus, even if the heat absorbing metal plate 4 in contact with the high temperature source or the heat releasing metal plate 6 in contact with the low temperature source is subjected to bending or distortion, the heat conducting metal plate 3 absorbs and corrects the bending or distortion. Since it has a function, adhesiveness with the thermoelectric conversion element 2 is not inhibited, and good thermal conductivity is ensured.

  When the electrode plate in contact with the high temperature source is formed as an integrated object like the one described in Patent Document 2, the bending due to the mechanical factor received from the high temperature source and the distortion due to the thermal factor are the integrated electrode. The board will receive as a whole. For this reason, the electrode plate is likely to be separated from the thermoelectric conversion element due to the deformation of the electrode plate. On the other hand, in the present invention, the space between the high-temperature source and the thermoelectric conversion element is not a single body, but is a joined body of the heat conducting metal plate 3 and the heat absorbing metal plate 4, and therefore the heat absorbing metal plate. Even if 4 deform | transforms, the metal plate 3 for heat conduction joined to this has the big characteristic in having the function which correct | amends this deformation | transformation. Therefore, since the thermoelectric conversion element 2 is not easily separated and maintains the adhesion, the thermal conductivity is maintained in a good state. This situation is the same on the low temperature source side.

  Joining surface of thermoelectric conversion element 2 and heat conducting metal plate 3, joining surface of heat conducting metal plate 3 and heat absorbing metal plate 4, joining of heat conducting metal plate 3 and heat releasing metal plate 6 Grease is applied to the surfaces so that the respective joint surfaces are in close contact with each other. Therefore, it can prevent that a clearance gap is formed in a joint surface and an air layer intervenes, and can improve thermal conductivity. In addition, although the spacing between the joint surfaces is maintained by the thickness of the grease layer, even if the heat absorbing metal plate 4 or the heat releasing metal plate 6 is distorted or bent, the thickness of the grease layer is not limited to this. By changing correspondingly, adhesion of the joint surface is maintained. Therefore, the presence of the grease layer on the joint surface also has a function of correcting the deformation of the heat absorbing metal plate 4 and the heat releasing metal plate 6 described above.

FIG. 2 is a plan view of the power generation member according to the embodiment of the present invention.
The thermoelectric conversion elements 2 are arranged in a matrix, and a plurality of pins 5 are provided for one thermoelectric conversion element 2. The thermoelectric conversion elements 2 arranged in a matrix form one block.

  FIG. 3 is a configuration diagram in which one thermoelectric conversion element 2 is extracted, and (a) and (c) are plan views, and (b) and (d) are front views thereof. 3A and 3B show one thermoelectric conversion element 2 provided with a plurality of pins 5, and FIGS. 3C and 3D show one thermoelectric conversion element. 2 shows that one pin 5 is provided. Thus, how many pins 5 are provided for one thermoelectric conversion element 2 can be appropriately selected according to the situation. The pin 5 as a whole is made of a metal or hard plastic with good thermal conductivity. In addition, in FIG. 3, since it aims at showing arrangement | positioning of the pin 5 with respect to the thermoelectric conversion element 2, other components are abbreviate | omitted.

  In forming the power generation member 1 using a plurality of thermoelectric conversion elements 2, it is ideal that an equal temperature difference occurs with respect to all the thermoelectric conversion elements 2, and at this time, the power generation efficiency is maximum. Become. If the thermal conductivity from the heat source to any one of the thermoelectric conversion elements 2 decreases, the temperature difference generated for the thermoelectric conversion element 2 is smaller than the temperature difference generated for the other thermoelectric conversion elements 2. Thus, maximization of power generation efficiency will be hindered.

  In this invention, since it has the function which correct | amends distortion and bending by having the structure mentioned above, it is hard to produce the situation where the heat conductivity from the heat source to the specific thermoelectric conversion element 2 falls. Therefore, it is possible to generate an equal temperature difference for all the thermoelectric conversion elements 2 and to maximize power generation efficiency.

FIG. 4 shows another example of the pin structure. 4, (a), (c), and (e) are plan views, (b), (d), and (f) are front views, and (g) is a side view.
4 (a) and 4 (b), the inside of the pin 5 is hollow, and the inside of the pin 5 can be filled with air, a cooling liquid, gas, or a gel-like substance. . In the pin 5 shown in FIGS. 4C and 4D, the end 7 on the side opposite to the side fixed to the heat-dissipating metal plate 6 is open. The pins 5 shown in FIGS. 4E, 4F, and 4G are obtained by arranging a plurality of plate-like objects. Which structure to adopt as the pin 5 can be appropriately selected depending on the use situation.

In FIG. 5, the structure of the electric power generating apparatus which concerns on 1st embodiment of this invention is shown.
The power generation device 10 is formed by incorporating the power generation member 1, and when the outside air is hotter than the ground as in summer, the tile 11 attached in contact with the heat absorbing metal plate 4. Becomes the high temperature source side, and the heat release metal plate 6 is arranged on the ground surface and becomes the low temperature source side to perform temperature difference power generation. The tile 11 becomes the high temperature source side by the heat obtained by irradiating the tile 11 with sunlight, and the heat release metal plate 6 becomes the low temperature source side by being arranged on the ground surface. The tile 11 may be attached so as to be in contact with the metal plate 6 for heat release.

  On the high temperature source side, the pin 5 has a structure embedded in the tile 11, so that the tile 11 and the pin 5 have a wide contact area, so that the high temperature tile 11 can efficiently pass through the pin 5. Heat conduction is performed with respect to the high temperature side end face of the thermoelectric exchange element 2.

  Moreover, since the pin 5 has a structure embedded in the ground 12 on the low temperature source side, and the ground 12 and the pin 5 have a wide contact area, the pin 5 is connected to the ground 12 via the pin 5. Heat is efficiently dissipated from the end face on the low temperature side of the thermoelectric exchange element 2. In addition, since the pin 5 has a structure in which it penetrates into the ground 12, the strength of installation is improved.

  The pin 5 embedded in the ground 12 can be in an open state at the end 7 opposite to the side fixed to the metal plate 6 for heat release, whereby moisture is contained inside the pin 5. The soil enters, the contact area between the pin 5 and the soil is further expanded, and the diffusion of heat from the heat release metal plate 6 through the pin 5 is promoted by moisture.

  Although FIG. 5 shows the power generation member 1 arranged on the ground surface, the same power generation action can be obtained even if the power generation member 1 is arranged on the water or in a water channel. For example, a tile-shaped power generation device may be suspended on a pond, or may be disposed in a place where a water channel is formed, such as a gutter. Also in this case, since the end 7 on the side opposite to the side where the pin 5 is fixed to the heat release metal plate 6 is in an open state, water enters the inside of the pin 5. Heat dissipation from the heat release metal plate 6 is promoted.

  When the outside air is cooler than the ground or underwater as in winter, the heat absorbing metal plate 4 and the heat releasing metal plate 6 are interchanged, and the tile 11 attached in contact with the heat releasing metal plate 6 is attached. Becomes the low-temperature source side, and the heat-absorbing metal plate 4 is arranged on the surface of the earth or on the water or in the water channel so as to become the high-temperature source side and perform temperature difference power generation. The heat-absorbing metal plate 4 and the heat-dissipating metal plate 6 are the same manufactured with a metal having good thermal conductivity as the object, and the power generation member 1 has a symmetrical structure with the thermoelectric conversion element 2 as the center. For this reason, in the summer and winter seasons, the functions of the heat absorbing metal plate 4 and the heat releasing metal plate 6 are interchanged, and the power generation capacity is obtained with the same structure. The polarity of the electric current obtained only changes between summer and winter, and power generation is possible as long as there is a temperature difference between the outside air and the ground or water.

In FIG. 6, the structure of the electric power generating apparatus which concerns on 2nd embodiment of this invention is shown.
The power generation device 20 is formed by incorporating the power generation member 1. When the outdoor is hotter than the room as in the summer, a wall material attached in contact with the heat absorbing metal plate 4 or The roofing material 21 is on the high temperature source side, and the heat release metal plate 6 is placed in the space 22 inside the wall material or the roofing material 21 and becomes the low temperature source side to generate temperature difference power generation.

  On the high temperature source side, the pin 5 has a structure embedded in the wall material or the roof material 21, and thus the wall material or roof material 21 and the pin 5 have a wide contact area. Thermal conduction is efficiently performed from the roof material 21 to the high temperature side end surface of the thermoelectric exchange element 2 through the pins 5. Furthermore, since the pin 5 has a structure in which the wall material or the roof material 21 is bitten, the installation strength is improved.

  Further, the pin 5 has a structure projecting into the space 22 inside the wall material or roof material 21 on the low-temperature source side, whereby the contact space between the space 22 inside the wall material or roof material 21 and the pin 5 is wide. Therefore, heat is efficiently dissipated from the low-temperature side end face of the thermoelectric exchange element 2 through the pin 5 to the space 22 inside the wall material or roof material 21.

  In this case, the pin 5 has an open end 7 on the side opposite to the side fixed to the heat-dissipating metal plate 6, so that air flows into the pin 5 and the pin 5 passes through the pin 5. The heat dissipation from all the heat releasing metal plates 6 is promoted.

  Further, when the outdoor temperature is lower than the indoor temperature as in winter, the heat absorbing metal plate 4 and the heat releasing metal plate 6 are replaced, and the wall material attached in contact with the heat releasing metal plate 6 or The roofing material 21 is on the low temperature source side, and the heat absorbing metal plate 4 is arranged in the space 22 inside the wall material or the roofing material 21 and becomes the high temperature source side, and temperature difference power generation is performed. The heat-absorbing metal plate 4 and the heat-dissipating metal plate 6 are the same manufactured with a metal having good thermal conductivity as the object, and the power generation member 1 has a symmetrical structure with the thermoelectric conversion element 2 as the center. For this reason, in the summer and winter seasons, the functions of the heat absorbing metal plate 4 and the heat releasing metal plate 6 are interchanged, and the power generation capacity is obtained with the same structure. The polarity of the current obtained only changes between summer and winter, and power generation is possible as long as there is a temperature difference between indoors and outdoors.

  Without being limited to the two embodiments described above, when the power generation member 1 of the present invention is used, it is possible to always generate power in an environment with a temperature difference. Since the power generation member 1 has a structure that takes into account the improvement in thermal conductivity between the high-temperature source and the low-temperature source and the thermoelectric conversion element, even if the temperature difference between the high-temperature source and the low-temperature source is relatively small, Can be collected. Therefore, it functions effectively as a means for obtaining power even in an environment where it is difficult to obtain sufficient power until now.

  Since the present invention can secure good thermal conductivity between a high-temperature source or a low-temperature source and a thermoelectric conversion element, it is possible to perform temperature difference power generation with high power generation efficiency. Therefore, even when the temperature difference between the high-temperature source and the low-temperature source is relatively small, sufficient power can be collected. In addition, it can be used as a device for collecting electric power widely by a simple method by embedding it in the ground or incorporating it into building materials.

DESCRIPTION OF SYMBOLS 1 Power generation member 2 Thermoelectric conversion element 3 Metal plate for heat conduction 4 Metal plate for heat absorption 5 Pin 6 Metal plate for heat release 7 End portion 10 Power generation device 11 Tile 12 Underground 20 Power generation device 21 Wall material or roof material 22 Inside space

Claims (3)

A thermoelectric conversion element, a heat conducting metal plate joined to both ends of the thermoelectric conversion element, a heat absorbing metal plate joined to one of the heat conducting metal plates, and the other heat A heat-dissipating metal plate joined to the conductive metal plate, a joining surface between the thermoelectric conversion element and the heat-conducting metal plate, and the heat-conducting metal plate and the heat-absorbing metal plate. Grease is applied to the joining surface, the joining surface of the heat conducting metal plate and the heat releasing metal plate, and perpendicular to the contact surface with the heat absorbing metal plate or the heat releasing metal plate. A pin, which is a columnar object extending in the direction, is a power generation device formed by incorporating a power generation member attached to the heat absorbing metal plate and the heat releasing metal plate in order to increase thermal conductivity. And
When the outside air is hotter than the ground or water, the tile attached in contact with the heat-absorbing metal plate is on the high-temperature source side, and the heat-releasing metal plate is placed on the ground surface, on the water, or in the water channel. When the temperature difference power generation is performed on the low temperature source side and the outside air is at a lower temperature than the ground or water, the tile attached in contact with the metal plate for heat release becomes the low temperature source side, and the heat absorbing metal A power generating device, wherein a plate is disposed on the ground surface, on the water or in a water channel, performs temperature difference power generation on a high temperature source side, and has a structure in which the pin is embedded in the tile . A thermoelectric conversion element, a heat conducting metal plate joined to both ends of the thermoelectric conversion element, a heat absorbing metal plate joined to one of the heat conducting metal plates, and the other heat A heat-dissipating metal plate joined to the conductive metal plate, a joining surface between the thermoelectric conversion element and the heat-conducting metal plate, and the heat-conducting metal plate and the heat-absorbing metal plate. Grease is applied to the joining surface, the joining surface of the heat conducting metal plate and the heat releasing metal plate, and perpendicular to the contact surface with the heat absorbing metal plate or the heat releasing metal plate. A pin, which is a columnar object extending in the direction, is a power generation device formed by incorporating a power generation member attached to the heat absorbing metal plate and the heat releasing metal plate in order to increase thermal conductivity. And
When the outdoor is hotter than indoors, the wall material or roof material attached in contact with the heat absorbing metal plate is on the high temperature source side, and the heat releasing metal plate is a space inside the wall material or roof material. When the outdoor is at a lower temperature than indoors, the wall material or roof material attached in contact with the metal plate for heat release becomes the low temperature source side. The metal plate for heat absorption is arranged in the space inside the wall material or roof material and becomes a high temperature source side to perform temperature difference power generation, and the pin is embedded in the wall material or the roof material. generator and wherein the are. 3. The power generation according to claim 1, wherein the pin attached to the heat-dissipating metal plate has an open end opposite to a side fixed to the heat-dissipating metal plate. apparatus.

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