Energy conversion device

Abstract

To provide an energy conversion device which can efficiently generate secondary energy from primary energy, and can convert the energy.SOLUTION: An energy conversion device 1 comprises: a liquid tank 11 in which a liquid 10 is stored; a plurality of gas receiving parts 12 which are arranged in the liquid tank 11 in a vertical direction, and are freely rotatable or movable in the vertical direction; a nozzle 13 which injects a compressed gas from a lower part of the gas receiving part 12 which is located in the lower part in the liquid tank 11; a gas cylinder 14 which stores the compressed gas as a primary energy source, and sends out the compressed gas to the nozzle 13; output means 3 which outputs rotational or vertical movement motion energy generated at the gas receiving parts 12 to the outside of the liquid tank 11 as secondary energy by a floating force which is generated by the reception of the compressed gas injected from the nozzle 13 by the gas receiving parts 12; and a collection device 4 which returns the gas from the liquid tank 11 to the gas cylinder 14.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an energy conversion device that converts primary energy into secondary energy. [Background technology]

[0002] As an example of an energy conversion device, there is known a device that uses the buoyancy of air pumped underwater to drive a lift, and generates electricity by driving this lift (Japanese Patent Laid-Open Publication No. 56-113065). [Prior art documents] [Patent documents]

[0003] Summary of the Invention

[0004] The present invention relates to an energy conversion device that converts primary energy into secondary energy. As an example of an energy conversion device, there is known a device that uses the buoyancy of air pumped underwater to drive a lift, and generates electricity by driving this lift (Japanese Patent Laid-Open Publication No. 56-113065). However, conventional devices of this type are not able to fully and effectively utilize the air pumped into the water, and therefore have low energy utilization efficiency. The present invention is intended to solve the above problems, and has an object to provide an energy conversion device capable of efficiently generating and converting primary energy into secondary energy. An energy conversion device according to one embodiment of the present invention is characterized in comprising a liquid tank in which a liquid is stored, a plurality of gas receiving sections arranged vertically within the liquid tank and capable of rotating or moving up and down freely, a nozzle that sprays compressed gas from below the gas receiving section located at a lower part within the liquid tank, a gas cylinder that stores the compressed gas as a primary energy source and sends the compressed gas to the nozzle, an output means that outputs, as secondary energy to the outside of the liquid tank, kinetic energy of rotation or upward movement generated in the gas receiving section due to buoyancy generated when the gas receiving section receives the compressed gas sprayed out from the nozzle, and a recovery device that returns gas from the liquid tank to the gas cylinder. With this configuration, compressed gas is sprayed into a liquid tank in which liquid is stored as a primary energy source, and the resulting movement energy due to buoyancy is converted into secondary energy. The gas is then recovered from the liquid tank and stored in a gas cylinder for reuse, making it possible to generate and convert energy efficiently. In addition, a vehicle body moving device according to one embodiment of the present invention is characterized in that it comprises a vehicle body, sleds for sliding on ice attached to the front, rear, left and right sides of the underside of the vehicle body, rails on the road surface on which an ice surface is formed by freezing a liquid and which guide the sleds as they slide on the ice, and a drive unit for moving the vehicle body. With this configuration, inertial motion can be achieved by gliding on ice with little resistance, thereby improving the energy efficiency of traveling. In addition, an energy utilization device according to one embodiment of the present invention is an energy utilization device that utilizes the energy of constant-temperature groundwater, and comprises: an underground tank that is buried in a specified underground area where a specified constant-temperature groundwater can be obtained and stores the constant-temperature groundwater; a structure formed by connecting and communicating with each other a plurality of hollow tubes made of an optically transparent material to form a hollow portion inside; a pipe and a circulation pump that circulate the constant-temperature groundwater stored in the underground tank through the hollow tubes of the structure; and a fan that blows air from one end to the other end of the hollow portion formed by the structure, wherein the hollow portion is used as an air-conditioning space or a space for installing energy exchange equipment. With this configuration, the energy of the constant temperature groundwater can be effectively utilized. Another aspect of the present invention is an energy utilization device that utilizes constant-temperature underground energy, and is characterized in that it comprises a hollow pipe that runs back and forth between the ground at a predetermined depth underground at a predetermined constant temperature and the ground surface, and a fan that sends air from the ground surface side into the hollow pipe, and the air that is sent by the fan into the hollow pipe and cooled or heated underground at the predetermined depth is used for air conditioning on the ground surface side. With this configuration, the energy of the constant temperature groundwater can be effectively utilized. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that utilizes sunlight energy, and includes a structure formed by connecting and communicating a plurality of hollow tubes made of a light-transmitting material to form a hollow portion therein, a pipe and a circulation pump for circulating water or hot water through the hollow tubes of the structure, and a fan for blowing air from one opening to the other opening into the hollow portion formed by the structure, the structure being installed in a location where it can receive sunlight, and seawater is passed through the bottom side of the hollow portion when viewed from above, and air is passed over the upper surface of the seawater by the fan to promote evaporation of the seawater and obtain salt. With this configuration, sunlight energy can be effectively utilized. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that uses compressed air for air conditioning, and is characterized in that it comprises an air compressor powered by natural energy, and a tank buried underground for storing the air compressed by the air compressor, and the compressed air stored in the tank and temperature-controlled is sent through a pipe to an air-conditioned space. According to such a configuration, natural energy can be effectively utilized, and the energy can be stored in the form of compressed air. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that generates electricity by utilizing natural energy, characterized in that it comprises a wall structure installed on a coast that simulates a ria coast where the force of ocean waves causes seawater to rise to a position higher than the sea level, a tank for introducing and storing the risen seawater through the wall structure, and a hydroelectric generator or an air compression compressor that generates electricity by utilizing the potential energy of the seawater stored in the tank. With this configuration, the kinetic energy of seawater can be effectively utilized. [Means for solving the problem]

[0005] The present invention relates to an energy conversion device that converts primary energy into secondary energy. As an example of an energy conversion device, there is known a device that uses the buoyancy of air pumped underwater to drive a lift, and generates electricity by driving this lift (Japanese Patent Laid-Open Publication No. 56-113065). However, conventional devices of this type are not able to fully and effectively utilize the air pumped into the water, and therefore have low energy utilization efficiency. The present invention is intended to solve the above problems, and has an object to provide an energy conversion device capable of efficiently generating and converting primary energy into secondary energy. An energy conversion device according to one embodiment of the present invention is characterized in comprising a liquid tank in which a liquid is stored, a plurality of gas receiving sections arranged vertically within the liquid tank and capable of rotating or moving up and down freely, a nozzle that sprays compressed gas from below the gas receiving section located at a lower part within the liquid tank, a gas cylinder that stores the compressed gas as a primary energy source and sends the compressed gas to the nozzle, an output means that outputs, as secondary energy to the outside of the liquid tank, kinetic energy of rotation or upward movement generated in the gas receiving section due to buoyancy generated when the gas receiving section receives the compressed gas sprayed out from the nozzle, and a recovery device that returns gas from the liquid tank to the gas cylinder. With this configuration, compressed gas is sprayed into a liquid tank in which liquid is stored as a primary energy source, and the resulting movement energy due to buoyancy is converted into secondary energy. The gas is then recovered from the liquid tank and stored in a gas cylinder for reuse, making it possible to generate and convert energy efficiently. In addition, a vehicle body moving device according to one embodiment of the present invention is characterized in that it comprises a vehicle body, sleds for sliding on ice attached to the front, rear, left and right sides of the underside of the vehicle body, rails on the road surface on which an ice surface is formed by freezing a liquid and which guide the sleds as they slide on the ice, and a drive unit for moving the vehicle body. With this configuration, inertial motion can be achieved by gliding on ice with little resistance, thereby improving the energy efficiency of traveling. In addition, an energy utilization device according to one embodiment of the present invention is an energy utilization device that utilizes the energy of constant-temperature groundwater, and comprises: an underground tank that is buried in a specified underground area where a specified constant-temperature groundwater can be obtained and stores the constant-temperature groundwater; a structure formed by connecting and communicating with each other a plurality of hollow tubes made of an optically transparent material to form a hollow portion inside; a pipe and a circulation pump that circulate the constant-temperature groundwater stored in the underground tank through the hollow tubes of the structure; and a fan that blows air from one end to the other end of the hollow portion formed by the structure, wherein the hollow portion is used as an air-conditioning space or a space for installing energy exchange equipment. With this configuration, the energy of the constant temperature groundwater can be effectively utilized. Another aspect of the present invention is an energy utilization device that utilizes constant-temperature underground energy, and is characterized in that it comprises a hollow pipe that runs back and forth between the ground at a predetermined depth underground at a predetermined constant temperature and the ground surface, and a fan that sends air from the ground surface side into the hollow pipe, and the air that is sent by the fan into the hollow pipe and cooled or heated underground at the predetermined depth is used for air conditioning on the ground surface side. With this configuration, the energy of the constant temperature groundwater can be effectively utilized. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that utilizes sunlight energy, and includes a structure formed by connecting and communicating a plurality of hollow tubes made of a light-transmitting material to form a hollow portion therein, a pipe and a circulation pump for circulating water or hot water through the hollow tubes of the structure, and a fan for blowing air from one opening to the other opening into the hollow portion formed by the structure, the structure being installed in a location where it can receive sunlight, and seawater is passed through the bottom side of the hollow portion when viewed from above, and air is passed over the upper surface of the seawater by the fan to promote evaporation of the seawater and obtain salt. With this configuration, sunlight energy can be effectively utilized. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that uses compressed air for air conditioning, and is characterized in that it comprises an air compressor powered by natural energy, and a tank buried underground for storing the air compressed by the air compressor, and the compressed air stored in the tank and temperature-controlled is sent through a pipe to an air-conditioned space. According to such a configuration, natural energy can be effectively utilized, and the energy can be stored in the form of compressed air. Furthermore, an energy utilization device according to yet another aspect of the present invention is an energy utilization device that generates electricity by utilizing natural energy, characterized in that it comprises a wall structure installed on a coast that simulates a ria coast where the force of ocean waves causes seawater to rise to a position higher than the sea level, a tank for introducing and storing the risen seawater through the wall structure, and a hydroelectric generator or an air compression compressor that generates electricity by utilizing the potential energy of the seawater stored in the tank. With this configuration, the kinetic energy of seawater can be effectively utilized. [Brief description of the drawings]

[0006] [Figure 1] 1 is a configuration diagram of an energy conversion device according to an embodiment of the present invention; [Diagram 2] FIG. 2A is a perspective view of the gas receiving part of the device in an open state, and FIG. 2B is a perspective view of the gas receiving part in a closed state. [Diagram 3] FIG. 4 is a configuration diagram of an energy conversion device according to another embodiment of the present invention. [Figure 4] FIG. 11 is a configuration diagram of an energy conversion device according to still another embodiment of the present invention. [Diagram 5] FIG. 13 is a configuration diagram of an energy conversion device according to still another embodiment of the present invention. [Figure 6] FIG. 13 is a configuration diagram of an energy conversion device according to still another embodiment of the present invention. [Figure 7] 1A and 1B are diagrams showing the configuration of a compressed gas generator according to one embodiment of the energy conversion device of the present invention, in which (a) shows the operation in a compression stroke and (b) shows the operation in a suction stroke. [Figure 8] FIG. 4 is a diagram showing the configuration of another compressed gas generator used in the energy conversion device of the present invention. [Figure 9] FIG. 13 is a configuration diagram of an energy conversion device according to still another embodiment of the present invention. [Figure 10] FIG. 2 is a diagram for explaining a circulation process of an operating gas in an energy conversion device according to an embodiment of the present invention. [Figure 11] FIG. 13 is a configuration diagram of an energy conversion device according to still another embodiment of the present invention. [Figure 12] FIG. 2A is a front view showing a sled-traveling state of the vehicle body movement device according to one embodiment of the present invention, and FIG. 2B is a view showing a wheel-traveling state of the vehicle body movement device. [Figure 13] 6A and 6B are side views of a car body moving device according to another embodiment of the present invention. [Figure 14] 4A is a front view of a braking device according to one embodiment of the vehicle body movement device, and FIG. [Figure 15] FIG. 1 is a configuration diagram of an energy utilization device according to an embodiment of the present invention. [Figure 16] FIG. [Figure 17] FIG. 2 is a diagram showing another example of the configuration of the device. [Figure 18] FIG. 11 is a configuration diagram of an energy utilization device according to still another embodiment of the present invention. [Figure 19] FIG. 11 is a configuration diagram of an energy utilization device according to still another embodiment of the present invention. [Figure 20] FIG. 11 is a configuration diagram of an energy utilization device according to still another embodiment of the present invention. [Figure 21] 13A is a side view showing the configuration of an energy utilization device according to still another embodiment of the present invention, and FIG. 13B is a plan view of the same device. [Explanation of symbols]

[0007] 1 Energy conversion device 10 liquid 11 Liquid tank 11k top opening 11w communication opening 11A Water Tank 12 Gas receiving section 12a Movable wings 13 Nozzle 14 Gas Cylinder 14a Valve 3. Output Method 3a,3c,3e coupler 3b, 3d, 3f shaft 31 Power mechanism 31a Belt 31b Gear 4 Recovery device 5. Compressed Gas Generator 52 Pressurized piston 52b Sealing material 54 Heat exchanger 2. Vehicle movement device 2a ice surface 20 Road surface 21 Body 22 Sled 23 Rail 24 Wheels (drive mechanism) 6, 6A, 6B, 6C, 7 Energy Utilization Device 6a Hollow tube 60 structure 61 Cavity 62 Pipe 63 Fans 64 Solar Panels 65 Hollow Pipe 66 Fans 67 Air-conditioned space 68 Air Compressor 70 Seawater 71 Wall structure 72 Tank 74 Hydroelectric Generator 9 Seawater P3 Circulation Pump T Underground tank Ta Tank DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0008] (Energy conversion device) An energy conversion device according to an embodiment of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the energy conversion device 1 includes a liquid tank 11, a gas receiver 12, a nozzle 13, a gas cylinder 14, an output means 3, and a recovery device 4. This energy conversion device 1 is a device that ejects compressed gas as a primary energy source into the liquid tank 11 in which a liquid 10 is stored, and converts the resulting movement energy due to buoyancy into secondary energy that can be output from the liquid tank 11. The liquid tank 11 is a sealable tank and is usually used in a sealed state. The liquid tank 11 stores the liquid 10. The liquid 10 is preferably water, but is not limited to water and may be any liquid. The size of the liquid tank 1 is, for example, 2 to 3 m, but is not limited to this. Inside the liquid tank 11, a power mechanism 31 is installed that generates a rotational motion using the buoyancy of the liquid 10. The power mechanism 31 includes a belt 31a arranged in a vertically long ring shape, two upper and lower gears 31b around which the belt 31a is hung, and the gear 31b that rotates due to the movement of the belt 31a. The upper gear 31b is submerged in the liquid 10 in FIG. 1, but its upper part may be above the liquid surface, and for example, nearly the upper half of the gear 31b may be above the liquid surface. The amount of gas to be discharged can be determined appropriately depending on the effectiveness of the buoyancy of the gas in the gas receiving portion 12 and the resistance to the rotation of the gear 31b, for example the resistance that the liquid 10 exerts on the gas receiving portion 12. The gas receiving parts 12 are arranged in a ring shape on the belt 31a, and thus a plurality of gas receiving parts 12 are provided in the vertical direction inside the liquid tank 11. The gas receiving parts 12 are movable up and down in conjunction with the movement of the belt 31a, and rotate at the upper and lower positions, so that the gas receiving parts 12 perform an orbital motion between the upper and lower positions as a whole. In this embodiment shown in Fig. 1, the belt 31a and the gear 31b rotate to the right, i.e., clockwise. The nozzle 13 ejects compressed gas from below the gas receiving portion 12 located at the bottom in the liquid tank 11. The compressed gas is captured by the gas receiving portion 12 and gives buoyancy to the gas receiving portion 12. The gas receiving portion 12 receives buoyancy from the liquid 10, but when moving upward, it receives a larger buoyancy due to receiving the compressed gas ejected from the nozzle 13 than when moving downward. Although only one nozzle 13 is shown in FIG. 1, the number of nozzles 13 is not limited to one, and multiple nozzles may be used. For example, like an upward shower nozzle, multiple openings of the nozzle 13 may be distributed over the entire surface of the downward opening of the gas receiving portion 12 to eject gas from a wide area into the gas receiving portion 12. 2(a) and (b), the gas receiving part 12 is configured with movable wings 12a that can be opened and closed, and is in an open state when it receives compressed gas ejected from the nozzle 13 and generates buoyancy, and is in a closed state when it does not receive compressed gas and does not generate buoyancy from the gas. This structure allows the gas receiving part 12 and the belt 31a to move in a circular motion more efficiently. Gas cylinder 14 stores compressed gas as a primary energy source and delivers the compressed gas to nozzle 13. Gas cylinder 14 ejects compressed gas from nozzle 13 via valve 14a, which is controlled to open and close. Valve 14a is controlled to open only when gas receiver 12 reaches a predetermined position. As a result, the compressed gas is efficiently captured in gas receiver 12, reducing consumption of compressed gas, and also reducing the mixing of air bubbles into liquid 10, thereby maintaining a high density of liquid 10, making effective use of the inherent buoyancy of liquid 10. The gas cylinder 14 is connected to a compressed gas generator 5 that generates compressed gas. The compressed gas generator 5 may be, for example, a general compressor that compresses gas by the rotational motion of an impeller or rotor or the reciprocating motion of a piston, thereby converting mechanical energy into the energy of the gas, which is a fluid. The compressed gas generator 5 is operated by power from a power source 50. The power source 50 is preferably natural energy, such as wind power, geothermal energy, hydraulic power, tidal power, or wave power, in order to suppress the generation of greenhouse gases. The compressed gas generated by the compressed gas generator 5 is a gas with increased pressure so that the gas can be supplied from the nozzle 13 to the gas receiving part 12 against the water pressure of the liquid 10 in the tank 11. The gas supplied to the gas receiving part 12 is supplied in order to provide buoyancy to the gas receiving part 12 by the liquid 10. The output means 3 is a means for outputting the kinetic energy of the upward movement due to buoyancy generated in the gas receiving portion 12 as secondary energy to the outside of the liquid tank 11. In the present embodiment shown in Fig. 1, the output means 3 includes a power mechanism 31 for converting the kinetic energy due to buoyancy into rotational energy of a rotating shaft 31c of a gear 31b, and a power generation device 32 for converting the rotational energy of the rotating shaft 31c into electrical energy as secondary energy. The recovery device 4 is a device that returns the gas from the liquid tank 11 to the gas cylinder 14. The space above the liquid tank 11 is a gas chamber 15 in which the gas remains. The recovery device 4 sends the gas remaining in the gas chamber 15 to the gas cylinder 14 via the compressed gas generator 5. The gas in the gas chamber 15 is the gas generated from the nozzle 13, the vapor of the liquid 10, etc. The recovery device 4 is equipped with a three-way valve 41, a sub-cylinder 40, and a valve 42 along the pipeline from the gas chamber 15 to the compressed gas generator 5. The three-way valve 41 and the valve 42 are valves for adjusting the flow rate and closing the gas, which are controlled to open and close. These are preferably multi-function valves having a check valve function. The three-way valve 41 has a function of a valve that releases gas to reduce the pressure in the gas chamber 15. The sub-cylinder 40 functions as a buffer to supplement the capacity of the gas chamber 15. Furthermore, in the case where the compressed gas generator 5 has the functions of the three-way valve 41, the sub-cylinder 40, and the valve 42, the recovery device 4 may be configured only with piping connecting the gas chamber 15 and the compressed gas generator 5. Next, the operation of the energy conversion device 1 will be described. The operating gas of this device, i.e., compressed gas, will be described as air, but is not limited to air. The liquid 10 will be described as water. Water is poured into the liquid tank 11 in which the power mechanism 31 is installed, piping such as the gas cylinder 14 is connected to the nozzle 13, piping of the recovery device 4 is connected to the gas chamber 15, and the compressed gas generator 5 is operated to prepare compressed gas. While adjusting the gas pressure in the gas chamber 15 with the three-way valve 41, the compressed gas is sent to the nozzle 13 while adjusting the valve 14a. The gas constituting the compressed gas coming out of the upward opening of the nozzle 13 is captured by the gas receiving section 12 that opens at the bottom of the upward moving belt 31a, and replaces the water in the space above the gas receiving section 12. Then, buoyancy due to the gas is applied to the gas receiving section 12, which creates a difference in the forces acting on the left and right belts 31a due to the buoyancy of the liquid 10, and the belt 31a gradually starts to rotate clockwise. When the gas is received by the gas receiving sections 12 that move one after another above the nozzle 13, the circular movement of the belt 31a reaches a steady state. In a steady state of the rotation of the belt 31a, gas is released continuously from the gas receiving section 12 which rotates together with the belt 31a which is in contact with the upper gear 31b. The gas receiving section 12 which has released the gas moves downward with the movable wings 12a which can be opened and closed closed. When the gas receiving section 12 which rotates together with the belt 31a which is in contact with the lower gear 31b comes above the nozzle 13, the movable wings 12a which can be opened and closed open open, and receives the gas from the nozzle 13. The circulating belt 31a converts the kinetic energy from the gas receiving part 12, which rises due to buoyancy, into the rotational kinetic energy of the gear 31b. The rotation of the gear 31b rotates the rotation shaft 31c, and the rotational energy becomes electric energy generated by the power generation device 31 and is taken out to the outside. Here, the relationship between the three pressures P1, PW, and P2 will be explained. Pressure P1 is the pressure of the compressed gas delivered from the gas cylinder 14. Pressure PW is the water pressure determined by the depth of the liquid 10. Pressure P2 is the pressure of the gas in the gas chamber 15. These pressures have the following relationship when the energy conversion device 1 is operating in a steady state. This formula shows the condition under which the gas from the gas cylinder 14 can enter the liquid 10 from the nozzle 13. P2+PW <p1 The compressed gas generator 5 compresses the gas to obtain the necessary pressure P1, and makes it high pressure at least equal to or greater than the water pressure PW. The recovery device 4 controls the opening and closing of the three-way valve 41 to adjust the gas pressure P2 in the gas chamber 15 so that the above formula is satisfied. In this energy conversion device 1, compressed gas circulates as a working gas within the device while undergoing pressure fluctuations. The energy conversion device 1 forms a closed circulation circuit for the working gas in a steady state. In order to adjust the pressure of the working gas, various parts such as valves, pressure sensors, tanks, etc. may be appropriately incorporated into the energy conversion device 1. According to such an energy conversion device 1, compressed gas as a primary energy source is ejected into the liquid tank 11 in which the liquid 10 is stored, the resulting movement energy due to buoyancy is converted into secondary energy, and the gas is recovered from the liquid tank 11 into the gas cylinder 14 for reuse. Therefore, energy can be efficiently generated and converted. Regarding the reuse of gas, when a special gas other than air is used as the working gas, i.e., the compressed gas, the special gas can be recovered and reused. In addition, since the gas in the gas chamber 15 is not released into the atmosphere, for example, the gas pressure P2 in the gas chamber 15, i.e., the pressure energy of the gas, can be reused. Next, another embodiment will be described with reference to Fig. 3. The energy conversion device 1 of this embodiment includes a transmission mechanism 30 that mechanically extracts the rotational energy of the gear 31b to the outside, instead of the power generation device 32 in the embodiment of Fig. 1. In this example, the liquid tank 11 is installed underground, but it is not limited to being installed underground, and may be semi-underground or grounded. The same applies to the energy conversion device 1 of Fig. 1. The transmission mechanism 30 includes a coupler 3a, such as a gear, that engages with the lower gear 31b of the power mechanism 31 to receive its rotational energy, and a shaft 3b, a coupler 3c, a shaft 3d, a coupler 3e, and a further shaft 3f, which are successively coupled to the coupler 3a. The horizontal shaft 3b is led out of the liquid tank 11 through a communication opening 11w provided in the side wall of the liquid tank 11 located to the side of the lower gear 31b. A water seal tank 11A is provided on the lateral outside of the liquid tank 11 so as to surround the coupler 3c and the vertical shaft 3d. The water seal tank 11A has a communication opening 11w that communicates with the inside of the liquid tank 11 and an upper opening 11k that opens upward. The water seal tank 11A contains liquid 10, and the liquid level is opened to atmospheric pressure through the upper opening 11k. The vertical relationship between the liquid level of the liquid 10 in the liquid tank 11 and the liquid level of the liquid 10 in the water seal tank 11A is different from each other when the gas pressure P2 in the gas chamber 15 is not atmospheric pressure. The output mechanism 30 of the output means 3 in this energy conversion device 1 uses a water-sealed structure, so that mechanical energy can be taken out of the energy conversion device 1 without using a strict sealing structure. The water-sealed structure can also be applied to the upper gear 31b in the same manner. The transmission device 30 extracts the energy converted and generated in the liquid tank 11 as mechanical energy via these couplers 3a, 3c, 3e and shafts 3b, 3d, 3f to the outside of the energy conversion device 1 and transmits it to an external operating device 33. The operating device 33 is a water pump, and is configured with a chain 33c hung on upper and lower sprockets 33a and 33b, and multiple buckets 33d. The rotational energy extracted from the energy conversion device 1 is transmitted as rotational energy to the upper sprocket 33a via the shaft 3f. According to this energy conversion device 1, energy based on the pressure of compressed gas can be converted into mechanical energy and output, so that the mechanical energy can be used as it is as energy for the mechanical operation of the operating device 33. Next, referring to Figs. 4, 5 and 6, an example of a combination in which a plurality of liquid tanks 11 are used will be described. A plurality of liquid tanks 11 may be provided in parallel or in series with respect to a gas cylinder 14. The energy conversion device 1 shown in Fig. 4 shows an example in which three liquid tanks 11 of the same structure are provided in parallel with respect to a gas cylinder 14. Compressed gas is delivered to the nozzle 13 of each liquid tank 11 via a valve 14. Also, gas in the gas chamber 15 of each liquid tank 11 is collected in a sub-cylinder 40 via a three-way valve 41. The liquid tanks 11 arranged in parallel are not limited to those having the same structure, but may have different structures, and the number of liquid tanks 11 is not limited to three. The energy conversion device 1 shown in FIG. 5 shows an example in which three liquid tanks 11 of the same structure are arranged in series with respect to a gas cylinder 14. The liquid tanks 11 are arranged at the same horizontal level. Compressed gas is delivered to the nozzle 13 of the first liquid tank 11 from the side closer to the gas cylinder 14 via a valve 14a. Gas is delivered from the gas chamber 15 of the first liquid tank 11 to the nozzle 13 of the second liquid tank 11 via a three-way valve 41. Gas is delivered from the gas chamber 15 of the second liquid tank 11 to the nozzle 13 of the third liquid tank 11 via a three-way valve 41. Then, gas is collected from the gas chamber 15 of the third liquid tank 11 in the sub-cylinder 40. The valve 14a and the three three-way valves 41 are used to adjust the pressures corresponding to the above-mentioned pressures P1, PW, and P2 in the three liquid tanks 11. The liquid tanks 11 arranged in series are not limited to having the same structure, but may have different structures, and the number of tanks is not limited to three. The energy conversion device 1 shown in Fig. 6 shows an example in which two liquid tanks 11 of the same structure are installed in series, one above the other, with respect to a gas cylinder 14. Gas from the gas chamber 15 of the lower liquid tank 11 is sent to the nozzle 13 of the upper liquid tank 11 via a three-way valve 41. The piping for introducing the gas is arranged up to the upper level of the upper liquid tank 11, and then pulled back to below the liquid tank 11 and connected to the nozzle 13. This piping structure is designed to prevent the liquid 10 in the upper liquid tank from flowing into the lower liquid tank 11 through the gas piping. The upper and lower liquid tanks 11 are connected to each other by the water seal tank 11A. In this embodiment, a configuration is realized in which mechanical energy is extracted from the upper and lower liquid tanks 11 via the common water seal tank 11A and transmission mechanism 30. The upper and lower liquid tanks 11 are not limited to being connected to each other by the water seal tank 11A, and the upper and lower liquid tanks 11 may be independent of each other. For example, the set of the liquid tank 11, the water seal tank 11A, and the transmission mechanism 30 shown in FIG. 3 may be arranged in series vertically, and in this case, the upper and lower liquid tanks 11 each include the water seal tank 11A and the transmission mechanism 30. Next, an example of a compressed gas generator 5 will be described with reference to Figures 7(a) and (b). This compressed gas generator 5 generates compressed gas by pressurizing gas using a pressurizing piston 52 provided in a cylinder 51. The pressurizing piston 52 includes a piston body 52a and a seal member 52b made of a life-ring-like O-ring capable of adjusting the internal pressure. A pipe for generating compressed gas is connected to the lower side wall of the cylinder 51 through an opening. The pipe is connected to the gas cylinder 14 via a three-way valve 51a. The lower part of the cylinder 51 is connected to a water seal tank 11A provided outside the side wall of the cylinder 51 through a water seal structure. A chain is attached to the lower surface of the pressurizing piston 52, and the chain is fixed to a winch 53 located above the water seal tank 11A through the water seal structure so as to be freely wound up and unwound. 7(a), in the pressurizing step, the internal pressure of the life-ring-shaped seal material 52b is increased to form a slidable sealing structure between the pressurizing piston 52 and the inner wall of the cylinder 51. Next, the pressurizing piston 52 is moved downward by the winch 53 to compress the gas inside the cylinder 51, and the compressed gas is sent to the gas cylinder 14. 7(b), in the intake process, the internal pressure of the life-ring-shaped seal material 52b is weakened to create a gap between the pressure piston 52 and the inner wall of the cylinder 51. Next, the winch 53 is loosened to pull the pressure piston 52 upward, and gas is sucked into the cylinder 51. The mechanism and energy for compressing the gas by pushing the pressure piston 52 downward are not limited to those using the hoist 53, and various methods can be used. For example, instead of the water-sealed structure and the hoist 53, a configuration in which hydraulic or water pressure is applied to the upper surface of the pressure piston 52 may be used. The intake process can be easily performed by lowering the internal pressure of the float-shaped sealing material 52b, the internal pressure of which can be adjusted. Next, referring to FIG. 8, another example of the compressed gas generator 5 will be described. This compressed gas generator 5 generates the compressed gas by heating solid dry ice with the heat of combustion of a mixed gas containing hydrogen and oxygen to turn it into a gas, thereby expanding the volume. The generated compressed gas is delivered to the gas cylinder 14. In general, the working gas may be a gas that generates buoyancy when delivered from the nozzle 13. For example, the working gas may be in a liquid or solid state, not a gas, during the period from the gas chamber 15 to the gas cylinder 14. After the recovery device 4, a working gas that is converted into a solid or liquid by being made into dry ice or liquefied gas may be used. For example, a substance that is compressed to become a liquefied gas may be used as the working gas. Next, another example of the energy conversion device 1 will be described with reference to Fig. 9. In this energy conversion device 1, a compressed gas generator 5 generates compressed gas by passing a gas pipe through a heat exchanger 54 to heat the gas, and the rest is the same as the energy conversion device 1 of Figs. 1 and 3. On the upstream side of the heat exchanger 54, that is, on the sub-cylinder 40 side, there is a valve 42 having a check valve function. In addition, on the downstream side of the heat exchanger 54, that is, on the gas cylinder 14 side, a three-way valve 51a for adjusting the gas pressure, etc. is provided as necessary. In this compressed gas generator 5, a heat medium 54a that becomes high temperature is sealed in the housing of a heat exchanger 54. A pipe that guides the working gas that circulates inside the energy conversion device 1 to operate the energy conversion device 1, that is, the gas that becomes compressed gas, is surrounded by the heat medium 54a inside the heat exchanger 54. The working gas inside the pipe is gasified into a high pressure gas by receiving heat from the heat medium 54a, and becomes a compressed gas. The working gas does not need to be in a gaseous state at all times while circulating inside the energy conversion device 1, and may be in a liquid or solid state. When a working gas in a state other than a gas is collectively referred to, it is called a working gas material. The heat exchanger 54 may be, for example, a solar hot water heater in which metallic sodium is enclosed as the heat medium 54a having a high boiling point. The heat exchanger 54 may use natural energy to heat the heat medium 54a. The natural energy may be, for example, solar energy, geothermal heat (such as heat from magma), or heat from a hot spring. The substance that becomes the working gas may be arbitrarily selected and used depending on the combination with the liquid 10 in the liquid tank 11, and further depending on the operating conditions of the energy conversion device 1, such as the various pressures P1, PW, and P2, the temperature conditions of the liquid 10, and the physical properties during operation. For example, a refrigerant such as freon may be used as the working gas. Furthermore, ammonia water, etc. may be used as the liquid 10 in addition to water. Next, a circulation process of the working gas in one embodiment of the energy conversion device 1 will be described with reference to Fig. 10. In the energy conversion device 1 of this embodiment, the working gas is made into a high-pressure gas by the compressed gas generator 5, sent to the device main body 11R of the energy conversion device via the gas cylinder 14, and collected from the device main body 11R into the sub-cylinder 40 and returned to the compressed gas generator 5. The device main body 11R is a general term for the liquid tank 11 and the entire structure therein, and includes components for converting the primary energy of the compressed gas into kinetic energy and then outputting it outside the liquid tank 11 as secondary energy. The compressed gas generator 5 of this embodiment includes a compressor 16, a heat exchanger 17, and an evaporator 18. Here, the description assumes that the working gas is freon, which is used as a refrigerant in a refrigerator or the like. Such a working gas can be used as a heat source when heated to a high temperature, can be used as a heat-retaining material when cooled by expanding and releasing heat of vaporization, and can also be used as a gas that provides buoyancy to the gas receiving section 12 in the energy conversion device 1 by being made into a high-pressure gas. The compressor 16 compresses the working gas to a high temperature and pressure state using, for example, electrical energy. The heat exchanger 17 releases the heat of the working gas inside and heats liquids or gases such as water or air. The heated liquid or gas is guided to another location and used for heating in air conditioning or the like. The carburetor 18 expands the working gas through an expansion valve and the like to further cool it. The cooled working gas can absorb heat from the surroundings, and its heat absorption capacity is used to build air conditioning systems, etc. The working gas that has passed through the heat exchanger 17 and the carburetor 18 becomes compressed gas with an appropriate pressure adjustment, and is sent to the device main body 11R via the gas cylinder 14 for energy conversion. According to this circulation process, surplus energy is inputted into the working gas in advance in the compressor 16, and the surplus energy is used for heating and cooling in the subsequent heat exchanger 17 and evaporator 18, respectively, and then energy conversion using buoyancy is performed. In an environment where surplus energy can be input, a unified system as a whole can be constructed. Next, another embodiment of the energy conversion device 1 will be described with reference to Fig. 11. In the energy conversion device 1 of this embodiment, the power mechanism 31 in the energy conversion device 1 of Fig. 1 is replaced with a power mechanism 31A having the form of a water wheel. The power mechanism 31A has a plurality of gas receiving parts 12 provided around the outer periphery of a rotor that rotates around one axis. The gas receiving parts 12 have the structure shown in Fig. 2(a)(b). In this embodiment, two power mechanisms 31A that rotate clockwise are installed in the liquid tank 11. A valve 14a and a nozzle 13 are provided for each of the power mechanisms 31A. The rotational energy of the power mechanisms 31A is converted into electrical energy by a power generation device 32. (Vehicle body movement device) Next, a vehicle body moving device according to an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 12(a) and (b), the vehicle body moving device 2 includes a vehicle body 21, sleds 22 for sliding on ice provided on the front, rear, left and right sides of the underside of the vehicle body 21, a pair of left and right rails 23 provided on a road surface 20 and having ice surfaces 2a formed by freezing liquid to guide the sleds 22 sliding on the ice, and a drive unit for running the vehicle body 21. The rail 23 includes a housing 23a having a concave cross section with a groove formed in the longitudinal direction and fixed to the road surface 20, and a refrigerant pipe 23b arranged inside the groove through which a refrigerant passes. Water is poured into the groove of the housing 23a and cooled by the refrigerant pipe 23b to form ice 2b. The surface of the ice 2b becomes the ice surface 2a when the sled 22 slides on the ice. The rail 23 may be provided with a cover to prevent rain and the like from entering the inside when the sled 22 is not sliding on the ice, and may also be provided with a drain hole to drain water present on the ice surface 2a. This cover and the housing 23a of the rail 23 are cooled by circulating underground tank water through a pipe. Guide wheels 21a are provided adjacent to the outer surface of the rail 23. The guide wheels 21a guide the car body 21 so that it travels along the rail 23. Such a guiding device may be provided between the sled 22 and the rail 23. For example, a structure on the rail 23 may be configured to encase and surround the sled 22 so as to prevent the sled 22 from deviating from the rail 23. The driving device is wheels 24 powered by an engine or motor mounted on the vehicle body 21. The wheels 24 are configured to be able to move up and down freely relative to the vehicle body 21, and when not driven, they are moved upward so as to move away from the road surface 20, and the vehicle body 21 sleds on the ice surface 2a using the sled 22 (Fig. 12). When driven, the wheels 24 come into contact with the road surface 20 to cause the vehicle body 21 to wheel-travel (Fig. 13). As shown in Fig. 13(a), two wheels 24 may be arranged in the front-rear direction between the front and rear sleds 22, or as shown in Fig. 13(b), one wheel may be arranged in the front-rear direction. The arrangement and number of wheels 24 can be set arbitrarily according to the respective roles of sled running and wheel running. For example, when the sled 22 is run by the wheels 24 while in contact with the ice surface 2a, the weight of the body 21 is supported by the sled 22, so the wheels 24 only need to drive the body 21, and only one wheel is required in total. Also, when the wheels 24 support the weight of the body 21, at least three wheels 24 are required to provide three-point support. The car body moving device 2 may be an embodiment in which the car body 21 is moved by using a drive device that does not have wheels 24. For example, a jet propulsion device or a propeller propulsion device may be mounted on the car body 21 and used as the drive device. A linear motor may also be used as the drive device. In this case, the track that forms the magnetic field of the linear motor may be covered with an ice surface by freezing a liquid. Also, a linear motor may be combined with the wheels 24 that obtain driving force from an engine or motor mounted on the car body 21 to form a drive device. A braking device according to one embodiment of the vehicle body moving device 2 will be described with reference to Figures 14(a) and (b). The vehicle body 21 sliding on ice on rails 23 using a sled 22 has its kinetic energy absorbed by the braking device, causing it to slow down or stop. The vehicle body moving device 2 can be equipped with any braking device. The braking device 25 of this embodiment absorbs kinetic energy by the movement resistance of a fluid. The braking device 25 is an application of a device generally called a shock absorber or damper. The braking device 25 is provided along the rail 23 and includes, for example, a cylinder 25a filled with liquid, a piston 25b that moves relative to the cylinder 25a to move the liquid inside, a locking portion 26c provided on the piston 25b, and an engagement portion 21b that is provided on the lower part of the vehicle body 21 and engages with the locking portion 26c. The cylinder 25a and the piston 25b have a structure and function as a shock absorber. In addition, the pairs of the cylinder 25a and the piston 25b are arranged at predetermined intervals along the rail 23. The pairs of the cylinder 25a and the piston 25b may be arranged at predetermined intervals along the entire line of the rail 23, or may be arranged at predetermined intervals within a predetermined range. The engaging portion 21b is movable up and down, and when braking, is lowered from the traveling vehicle body 21 to be engaged with the engaging portion 26c, and pushes the engaging portion 26c in the traveling direction (leftward in the figure). This causes the piston 25b to move leftward, and the kinetic energy is converted into and absorbed in thermal energy by the viscous resistance of the oil, decelerating the vehicle body 21. The braking device 25 is provided with a plurality of safety valves 25d for releasing pressure in the cylinder 25a to prevent breakdown. The safety valves 25d are set to function in stages according to the pressure stages. If the vehicle body 21 cannot be stopped within the movable range of the pistons 25a, the lock between the locking portion 26c and the engaging portion 21b is automatically released, and the engaging portion 21b is locked to the locking portion 26c of the next set of cylinder 25a and piston 25b in the traveling direction, and the braking operation is performed by that set. The braking device 25 is set and arranged according to a predetermined rule of traveling speed and braking distance. (Energy Utilization Device) Next, an energy utilization device 6 according to one embodiment of the present invention will be described with reference to Fig. 15. The energy utilization device 6 is a device that utilizes the energy of constant temperature groundwater. The energy utilization device 6 includes an underground tank T, a structure 60, a pipe 62, a circulation pump P3, and a fan 63. The underground tank T is buried in a specific underground area where a specific constant-temperature groundwater can be obtained, and stores the constant-temperature groundwater. The underground tank T is placed, for example, near an underground water layer L containing constant-temperature groundwater together with a pump P1, and stores the groundwater pumped up by the pump P1. The groundwater is pumped up from the underground tank T to the ground by a pump P2. The structure 60 has a cavity 61 formed therein by connecting a plurality of hollow tubes 6a formed of a light-transmitting material in communication with each other. The cavity 61 is used as an air-conditioning space or an energy exchange device installation space. The structure 60 may be installed on the ground when used in the presence of sunlight, for example, or may be installed underground in other cases. If installed underground, it is easy to use the structure at a predetermined constant temperature. The structure 60 is used as an enclosed space by sealing both ends with walls formed by connecting the hollow tubes 6a. The structure 60 may also be used as an open space by opening a portion of both ends. The pipe 62 and the circulation pump P3 are used to circulate the constant temperature groundwater stored in the underground tank T and pumped up by the pump p2 through the hollow tube 6a of the structure 60. The necessary amount of groundwater is stored in the auxiliary tank T1, circulated through the hollow tube 6a, and then returned to the underground tank T. This circulation within the hollow tube 6a keeps the inside of the cavity 61 at a constant temperature. The fan 63 generates an air flow in the sealed cavity 61 formed by the structure 60. This air blowing eliminates stagnation of air within the cavity 61. The structure 60 may be provided with external piping from one end to the other end to form a closed wind passage, and the fan 63 may generate a unidirectional wind flow within the structure 60. As shown in FIG. 16, the hollow portion 61 is preferably used as an installation space for a solar panel 64. The solar panel 64 is an energy exchange device that converts solar energy into electrical energy. The solar panel 64 is in the hollow portion 61 whose four sides are kept at the temperature of groundwater, and air is blown by a fan 63, so that the panel surface can be kept at a low temperature and power generation efficiency can be maintained. The shape of the hollow portion 61 of the structure 60 can be an appropriate shape that can optimize and improve the efficiency of temperature control of the contents to be stored therein, depending on the contents to be stored therein. For example, in the case of the solar panel 64 of FIG. 16, the hollow portion 61 may be a sealed hollow portion surrounded by a wall formed by a hollow tube 6a close to the outer peripheral surface including the front and back surfaces of the panel so that the panel can be stored in the smallest space, or a partially open non-sealed hollow portion 61 may be used. Next, an application example of the energy utilization device 6 will be described with reference to FIG. 17. This energy utilization device 6 has a plurality of underground tanks T (three in the illustrated example) and a mixer 6mx that mixes groundwater from each tank. The underground tanks T are buried individually at a plurality of depths underground so that groundwater at different temperatures t1, t2, t3 can be obtained. The mixer 6mx mixes the groundwater at different temperatures t1, t2, t3 obtained from the plurality of underground tanks T, and delivers groundwater at a constant temperature adjusted to a predetermined temperature t0 regardless of the season. Even if the temperature of each groundwater varies seasonally, the predetermined temperature can be maintained by changing the mixing ratio taking into account the temperature difference between each groundwater. Next, referring to FIG. 18, an energy utilization device 6A according to another embodiment of the present invention will be described. The energy utilization device 6A is a device that utilizes constant-temperature underground energy, and includes a hollow pipe 65 provided between the ground surface and a predetermined depth underground at a predetermined constant temperature, and a fan 66 that sends air from the ground surface side to the hollow pipe 65. The air sent to the hollow pipe 65 by the fan 66 and cooled or heated by heat exchange through heat emission or absorption at a predetermined depth underground can be used for air conditioning on the ground surface side. In order to facilitate heat exchange underground, the surface area of ​​the pipe may be increased by providing multiple fins on the pipe or by making the pipe into multiple branched pipes at the heat exchange location. Next, an energy utilization device 6B according to yet another embodiment of the present invention will be described with reference to Fig. 19. The energy utilization device 6B is a device that utilizes sunlight energy, and includes a structure 60 having a cavity 61 formed therein by communicating and connecting a plurality of hollow tubes 6a formed of a light-transmitting material, a pipe 62 and a circulation pump P3 for circulating water or hot water through the hollow tubes 6a of the structure, and a fan 63 for blowing air into the cavity 61 formed by the structure 60 from one opening thereof toward the other opening. The structure 60 is installed in a place where it can receive sunlight, and seawater 9 is passed through the bottom side of the hollow portion 61 in a plan view, and air is passed over the upper surface of the seawater 9 by a fan 63. This promotes evaporation of the seawater 9, and salt can be obtained. Next, an energy utilization device 6C according to still another embodiment of the present invention will be described with reference to Fig. 20. The energy utilization device 6C is an energy utilization device 6C that utilizes compressed air for air conditioning, and includes an air compressor 68 powered by natural energy, and a tank Ta buried underground for storing the air compressed by the air compressor 68. In this example, a solar panel 64 is provided to use sunlight as the natural energy. Compressed air stored in a tank Ta and regulated to a predetermined temperature can be sent through a pipe to the air-conditioned space 67 for use. Next, an energy utilization device 7 according to still another embodiment of the present invention will be described with reference to Fig. 21. The energy utilization device 7 generates power by utilizing natural energy, and includes a wall structure 71 installed on a coast that simulates a ria coast where seawater rises up to a position higher than the sea level due to the force of ocean waves, a tank 72 that introduces and stores the risen seawater 70 by the wall structure 71, and a hydroelectric generator 74 that generates power by utilizing the potential energy of the seawater 70 stored in the tank 72. Seawater waves crashing on the shore have their path narrowed by a funnel-shaped wall structure 71, and run up the slope, causing seawater 70 to flow into a tank 72. Once the seawater in the tank 72 starts to flow toward a hydroelectric generator 74 through pipes 73a and 73b and a pump 73, the flow downstream continues without the need for a pump. By providing an air compressor instead of the hydraulic generator 74, it is possible to generate compressed air using potential energy and store it in a tank instead of generating electricity, thereby storing the potential energy as pressure energy. The present invention is not limited to the above-described configuration, and various modifications are possible. For example, the configurations of the above-described embodiments may be combined with each other.

Claims

1. 1. An energy conversion device, comprising: A liquid tank in which a liquid is stored; a gas receiving portion provided in the liquid tank in a vertical direction and capable of rotating or moving up and down; a nozzle for ejecting compressed gas from below the gas receiving portion located at a lower portion within the liquid tank; a gas cylinder that stores the compressed gas as a primary energy source and delivers the compressed gas to the nozzle; an output means for outputting, as secondary energy to the outside of the liquid tank, kinetic energy of rotation or upward movement generated in the gas receiving portion due to buoyancy generated when the gas receiving portion receives the compressed gas ejected from the nozzle; and a recovery device that returns gas from the liquid tank to the gas cylinder.

2. 2. The energy conversion device according to claim 1, wherein the gas cylinder is connected to a compressed gas generator that generates compressed gas using natural energy.

3. 3. The energy conversion device according to claim 1, wherein the gas cylinder is connected to a compressed gas generator that generates the compressed gas by expanding the volume of dry ice as a gas using heat of combustion of a mixed gas containing hydrogen and oxygen.

4. The energy conversion device according to any one of claims 1 to 3, characterized in that the gas receiving portion is configured with movable wings that can be opened and closed, and is in an open state when it receives compressed gas ejected from the nozzle and generates buoyancy, and is in a closed state when it does not receive compressed gas and does not generate buoyancy.

5. 5. The energy conversion device according to claim 1, wherein the gas cylinder ejects compressed gas from the nozzle through a valve that is controlled to open and close, and the valve is controlled to open only when the gas receiving portion reaches a predetermined position.

6. The energy conversion device according to any one of claims 1 to 5, characterized in that the output means includes a power mechanism having a belt on which the plurality of gas receiving portions are distributed in a ring shape, and a gear around which the belt is stretched and which rotates as the belt moves.

7. a water tank having a communication opening communicating with the inside of the liquid tank and an upper opening opening upward, the water tank being provided on a lateral exterior of the liquid tank; 7. The energy conversion device according to claim 6, characterized in that the output means includes a coupler and a shaft for transmitting the rotation of the gear of the power mechanism, in a space where the liquid tank and the water seal tank are connected, and outputs the rotational energy of the gear from the upper opening using the coupler and the shaft.

8. 8. The energy conversion device according to claim 1, wherein the gas cylinder is connected to a compressed gas generator that generates the compressed gas by heating the gas by passing a gas pipe through a heat exchanger, or a compressed gas generator that generates the compressed gas by pressurizing the gas with a pressurizing piston having a life-ring-shaped O-ring as a sealing material capable of adjusting the internal pressure.

9. 9. The energy conversion device according to claim 1, wherein a plurality of the liquid tanks are provided in parallel or in series with respect to the gas cylinder.

10. A vehicle body movement device, The car body and A sled for gliding on ice is provided on the front, rear, left and right sides of the underside of the vehicle body; A rail is provided on the road surface to guide the sled on the ice, and the rail has an ice surface formed by freezing a liquid. a drive unit for moving the vehicle body.

11. The drive device is a wheel powered by an engine or a motor mounted on a vehicle body, 11. The vehicle body moving device according to claim 10, wherein the wheels are provided so as to be movable up and down relative to the vehicle body so as to come into contact with the road surface when driven and to move away from the road surface when not driven.

12. 11. The vehicle body moving device according to claim 10, wherein the drive device is a jet propulsion device or a propeller propulsion device mounted on the vehicle body.

13. The drive device is a linear motor, 11. The vehicle body moving device according to claim 10, wherein an ice surface is formed by freezing a liquid so as to cover the surface of a track that forms the magnetic field of the linear motor.

14. 11. The vehicle body moving device according to claim 10, wherein the drive device is a linear motor and wheels that obtain a driving force from an engine or a motor mounted on the vehicle body.

15. An energy utilization device that utilizes the energy of constant temperature groundwater, an underground tank buried in a predetermined underground area where a predetermined constant temperature groundwater can be obtained and storing the constant temperature groundwater; a structure in which a cavity is formed inside by connecting a plurality of hollow tubes made of a light-transmitting material in communication with each other; A pipe and a circulation pump for circulating the constant temperature groundwater stored in the underground tank through the hollow tube of the structure; a fan that blows air from one end side to the other end side of the hollow portion formed by the structure, An energy utilization device, characterized in that the hollow portion is used as an air-conditioning space or a space for installing energy exchange equipment.

16. 16. The energy utilization device according to claim 15, wherein the energy exchange device is a solar panel.

17. The energy utilization device described in claim 15, characterized in that there are multiple underground tanks, each buried at multiple depths underground, and groundwater of different temperatures obtained from these multiple underground tanks is mixed to obtain groundwater at a predetermined constant temperature regardless of the season.

18. An energy utilization device that utilizes constant temperature underground energy, A hollow pipe is provided between the surface of the earth and a predetermined depth underground at a predetermined constant temperature; a fan for blowing ground surface air into the hollow pipe; An energy utilization device, characterized in that the air that is sent into the hollow pipe by the fan and cooled or heated underground at the specified depth is utilized for air conditioning on the ground surface side.

19. An energy utilization device that utilizes sunlight energy, a structure in which a cavity is formed inside by connecting a plurality of hollow tubes made of a light-transmitting material in communication with each other; A pipe and a circulation pump for circulating water or hot water through the hollow tube of the structure; a fan that blows air from one opening to another opening in the hollow portion formed by the structure, The structure is installed in a location where it can receive sunlight, and seawater is passed through the bottom side of the hollow portion when viewed in plan, and air is passed over the upper surface of the seawater by the fan, promoting evaporation of the seawater and obtaining salt. This energy utilization device is characterized by the above.

20. An energy utilization device that utilizes compressed air for air conditioning, An air compressor powered by natural energy, a tank buried underground for storing the air compressed by the air compressor; An energy utilization device characterized in that the compressed air stored in the tank and temperature-regulated is sent through a pipe to an air-conditioned space.

21. An energy utilization device that generates electricity by utilizing natural energy, A wall structure installed on the coast that mimics a ria coast where the force of ocean waves causes seawater to rise above sea level, A tank for introducing and storing the seawater raised by the wall structure; a hydroelectric generator or an air compressor that generates electricity by utilizing the potential energy of the seawater stored in the tank.

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