Drinking Water Supply System

Abstract

To provide a potable drinking water supply system capable of supplying water without external electricity supply.SOLUTION: A drinking water supply system consists of a first electric power generation unit that generates electric power based on natural energy, an electricity storage part that stores the electric power obtained by the first electric power generation unit, a hydrogen generation unit that generates hydrogen by electrolysis of an electrolytic solution and stores the hydrogen, a second electric power generation unit that generates electric power based on the hydrogen obtained by the hydrogen generation unit, and a water discharge port. The hydrogen generation unit has an electrolytic solution supply unit and a water electrolysis apparatus. The hydrogen generation unit performs electrolysis based on at least one of the electric power obtained in the first electric power generation unit, the electric power stored in the electricity storage unit, or the electric power obtained in the second electric power generation unit. The electrolytic solution supply part has at least a water intake part or a dehumidifying device. Water obtained from at least one of the water intake part and the dehumidifier is supplied as an electrolytic solution to the water electrolysis apparatus. The water obtained from at least one of the water intake part and the dehumidifying device is discharged from the water discharge part as drinking water.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a drinking water supply system. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a drinking water generating device has been proposed, as disclosed in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-100158 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, it requires external power.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a drinking water supply system capable of supplying water without an external power supply. [Means for solving the problem]

[0006] The drinking water supply system of the present invention comprises a first power generation device that generates electricity based on natural energy, a storage unit that accumulates electricity generated by the first power generation device, a hydrogen generation unit that generates hydrogen by electrolysis of an electrolyte and accumulates the hydrogen, a second power generation device that generates electricity based on the hydrogen obtained by the hydrogen generation unit, and a water outlet. The hydrogen generating unit has an electrolyte supply unit and a water electrolysis device. The hydrogen generating unit performs electrolysis based on at least one of the electric power obtained by the first power generating unit, the electric power stored in the power storage unit, and the electric power obtained by the second power generating unit. The electrolyte supply unit has at least one of a water intake unit and a dehumidifier. The water obtained from at least one of the water intake section and the dehumidifier is supplied to the water electrolysis device as an electrolyte. The water obtained by at least one of the water intake section and the dehumidifier is discharged from the water outlet as drinking water.

[0007] The water surrounding the drinking water supply system is collected using electricity from the first power generation device, which is based on natural energy. This makes it possible to supply water without relying on external power sources such as a commercial power source. In addition, the water obtained by the dehumidifier or the like can not only be discharged outside the drinking water supply system as drinking water, but can also be used as an electrolyte for generating hydrogen. Therefore, if a drinking water supply system is installed in areas such as mountain huts where it is difficult to receive electricity from outside and where it is not easy to obtain drinking water from outside, it will be possible to easily provide drinking water and generate electricity.

[0008] Preferably, the drinking water supply system further includes a dryer for removing water contained in the oxygen and hydrogen generated in the water electrolysis device, and a hydrogen tank. The hydrogen produced in the water electrolysis device is supplied to the hydrogen tank via a dryer. The water removed by the dryer is supplied as an electrolyte to the water electrolysis device and discharged from a water outlet.

[0009] The water produced by the dryer, along with water produced by dehumidifiers, can be used as drinking water or electrolyte.

[0010] More preferably, the electrolyte supply unit includes a first treatment device, a first tank, a second treatment device, and a second tank. The first treatment device performs at least one of filtering and irradiating with ultraviolet light to convert water obtained by at least one of the water intake section and the dehumidification device into pure water, and supplies the generated pure water to the first tank. The second treatment device performs at least one of filtration and ultraviolet irradiation to convert the pure water in the first tank into ultrapure water, and supplies the ultrapure water thus produced to the second tank.

[0011] Compared to producing ultra-pure water using a single treatment device, this method makes it possible to purify water in stages without placing a heavy load on each treatment device.

[0012] More preferably, the drinking water supply system further comprises an output terminal. The power storage unit is also capable of storing the power obtained by the second power generation device. The electric power obtained by the second power generating device is supplied to an electric device or a commercial power source connected to the output terminal.

[0013] Via the output terminal, it becomes possible to supply the power obtained from the drinking water supply system to external electrical equipment, etc.

[0014] More preferably, based on at least one of the user's selection, the surrounding conditions of the drinking water supply system, and the usage state of the drinking water supply system, the usage mode of the drinking water supply system is set to one of a hydrogen storage priority mode which prioritizes the accumulation of hydrogen in the hydrogen tank, a water storage priority mode which prioritizes the accumulation of drinking water in the first tank and the second tank, and a power supply priority mode which prioritizes the supply of power to an electrical device connected to the output terminal.

[0015] By prioritizing either the accumulation of hydrogen, the accumulation of drinking water, or the supply of power to the outside, it becomes possible to efficiently produce drinking water and other resources.

[0016] In addition, preferably, based on the ambient temperature and humidity of the drinking water supply system, the amount of power consumed by the electrical equipment connected to the output terminal, and the flow rate of water discharged through the water outlet, the drinking water supply system is set to have one of the following usage modes: a hydrogen storage priority mode, which prioritizes the accumulation of hydrogen in the hydrogen tank; a water storage priority mode, which prioritizes the accumulation of drinking water in the first tank and the second tank; or a power supply priority mode, which prioritizes the supply of power to the electrical equipment connected to the output terminal.

[0017] More preferably, the drinking water supply system further comprises a third power generation device and a fourth power generation device, which generate power based on heat, at a portion in the drinking water supply system where heat is generated. The third power generation device is provided on the top or side of the housing of the drinking water supply system. The fourth power generating device is provided around the second power generating device.

[0018] It will be possible to efficiently generate electricity using heat-generating parts of the drinking water supply system.

[0019] In addition, preferably, at least one of the ultrapure water obtained in the second treatment device and the ultrapure water accumulated in the second tank is returned to the upstream stage of the first treatment device via a circulation path, and is subjected to at least one of filtration and ultraviolet irradiation again in the first treatment device. Effect of the Invention

[0020] As described above, according to the present invention, it is possible to provide a drinking water supply system that is capable of supplying water without an external power supply. [Brief description of the drawings]

[0021] [Figure 1] 1 is a configuration diagram of a drinking water supply system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a configuration diagram of a drinking water supply system in which a third power generation device, a fourth power generation device, and power supply lines from the first conversion device to a water electrolysis device are added to the drinking water supply system of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, this embodiment will be described with reference to the drawings. The embodiments are not limited to the following embodiments. In principle, the contents described in one embodiment are also applicable to other embodiments. The embodiments and modifications can be combined as appropriate.

[0023] (Drinking water supply system 1) The drinking water supply system 1 of this embodiment comprises a housing 2, a power supply unit 5, a control device 7, a power generation unit 10 (first power generation unit 11, second power generation unit 12), a power storage unit 20, a hydrogen generation unit 30 (electrolyte supply unit 31, water electrolysis device 33, dryer 34, hydrogen tank 35), a conversion unit 40 (first conversion device 41, second conversion device 42, third conversion device 43), an output terminal 50, and a water outlet 60 (see Figure 1).

[0024] In Figure 1 and Figure 2 described later, the flow of water is indicated by a solid arrow inside the liquid transfer pipe 31k, the flow of the AC power supply is indicated by a dotted arrow, the flow of hydrogen is indicated by a dashed arrow outside the connecting pipe 36, and the flow of oxygen is indicated by a two-dot chain arrow outside the connecting pipe 36.

[0025] (Case 2) The housing 2 holds a power generation unit 10, a power storage unit 20, a hydrogen generation unit 30, a conversion unit 40, an output terminal 50, and a water outlet 60.

[0026] (Power supply unit 5) The power supply device 5 supplies the power from the first power generation device 11, the power from the second power generation device 12, and the power from the power storage unit 20 to electrical equipment (such as the water electrolysis device 33) provided in the drinking water supply system 1. The power supply device 5 preferably includes an internal storage device and is configured as an uninterruptible power supply (UPS) having an internal storage device so that the power supply to the electrical equipment of the drinking water supply system 1 can be maintained even when the power supply from the first power generation device 11, the second power generation device 12, and the power storage unit 20 is interrupted.

[0027] (Control device 7) The control device 7 controls each part of the drinking water supply system 1. The control performed by the control device 7 will be described in detail later.

[0028] (Power Generation Section 10) The power generation section 10 has a first power generation device 11 and a second power generation device 12 .

[0029] (First power generating unit 11) The first power generating device 11 is a power generating device (renewable energy-derived power generating device) that generates power based on natural energy (renewable energy), such as a solar power generating device or a wind power generating device. The first power generating device 11 is always in a state where it is capable of generating power. However, if the first power generating device 11 is a wind power generating device and the wind force received by the first power generating device 11 exceeds a predetermined wind force, the first power generating device 11 is put into a state in which it cannot generate power. The first power generating device 11 is disposed on the upper surface of the housing 2 or the like. However, the first power generating device 11 may be installed around the periphery of the housing 2. The electric power obtained by the first power generating device 11 is supplied to the power supply device 5 via the first conversion device 41. The electric power obtained by the first power generating device 11 is stored in the power storage unit 20. The first power generating device 11 includes a device such as a power conditioner that controls the supply from the first power generating device 11 to the power supply device 5, the power storage unit 20, and the like.

[0030] (Second power generating unit 12) The second power generating device 12 is a power generating device (fuel cell) that generates power based on hydrogen. The second power generating device 12 is installed inside the housing 2 or the like. The electric power obtained by the second power generating device 12 is supplied to an external electric device connected to the output terminal 50 via the second conversion device 42. In addition, the electric power obtained by the second power generating device 12 is stored in the power storage unit 20 via the second conversion device 42 and the third conversion device 43. The hydrogen used in the second power generating device 12 is hydrogen stored in a hydrogen tank 35 . The oxygen used in the second power generating device 12 is oxygen obtained in the water electrolysis device 33, but may be oxygen in the air.

[0031] (Electricity storage unit 20) The power storage unit 20 is constituted by a battery or the like, and stores the electric power obtained by the first power generation device 11 and the electric power obtained by the second power generation device 12. The power storage unit 20 is used to temporarily store power before supplying the power to the electric device connected to the output terminal 50 and the power supply device 5.

[0032] (Hydrogen generating unit 30) The hydrogen generation unit 30 includes an electrolyte supply unit 31 , a water electrolysis device 33 , a dryer 34 , and a hydrogen tank 35 .

[0033] (Electrolyte supply section 31) The electrolyte supply unit 31 collects electrolyte such as water for electrolysis and supplies it to the water electrolysis device 33 . The electrolyte supply unit 31 includes a dehumidifier 31a, a water intake unit 31b, a first pump 31c, a filter 31d, a first treatment device 31e, a water quality sensor 31f, a first tank 31g, a second pump 31h, a second treatment device 31i, a second tank 31j, and a liquid transfer pipe 31k.

[0034] (Dehumidifier 31a) The dehumidifier 31a is a device that condenses moisture in the air and collects the condensed water. The dehumidifier 31a is composed of, for example, a cooling plate, a heat dissipation plate, and a thermoelectric element (Peltier element) provided between them. In this embodiment, a cooling plate is provided outside the housing 2, and causes moisture in the air surrounding the housing 2 to condense. However, a cooling plate may be provided inside the housing 2 to condense the moisture in the air inside the housing 2.

[0035] (Water intake part 31b) The water intake section 31b is provided on the top or side surface of the housing 2, and collects rainwater from above the housing 2. The water intake section 31b may be configured to collect not only rainwater from above, but also water stored around the drinking water supply system 1 and water from a river flowing nearby.

[0036] (First pump 31c) The first pump 31c supplies the water obtained in the dehumidifier 31a and the water obtained in the water intake section 31b to the downstream filter 31d and the first treatment device 31e via the liquid transfer pipe 31k.

[0037] (Filter 31d) Filter 31d removes impurities from the water obtained by dehumidifier 31a and the water obtained by water intake section 31b through filtration.

[0038] (First processing device 31e) The first treatment device 31e performs filtration using activated carbon, a reverse osmosis membrane (RO membrane), and ion exchange resin, sterilization and inactivation of microorganisms by ultraviolet irradiation, and decomposition of organic matter. First treatment device 31e produces pure water from the water obtained in dehumidification device 31a and the water obtained in water intake section 31b.

[0039] (Water quality sensor 31f) The water quality sensor 31f detects whether or not predetermined impurities are contained in the water discharged from the first treatment device 31e and the water discharged from the dryer 34, that is, whether or not pure water is being produced. If it is detected that impurities have been mixed in due to clogging of the filter 31d, deterioration of components of the first treatment device 31e, etc., an audio or visual warning is output, or information is output to a terminal communicating with the drinking water supply system 1.

[0040] (First tank 31g) The first tank 31g is made of, for example, fiber reinforced plastics (FRP), resin, or the like, and has a capacity of 50 to 100 liters, and accumulates pure water (the water discharged from the first processing device 31e and the water discharged from the dryer 34). Inside the first tank 31g, sterilization and inactivation of microorganisms and decomposition of organic matter may also be carried out by irradiation with ultraviolet light.

[0041] (Second pump 31h) The second pump 31h supplies the pure water stored in the first tank 31g to the second processing device 31i.

[0042] (Second processing device 31i) The second treatment device 31i performs ultra-purification treatment on the pure water by filtering it using an RO membrane or the like and sterilizing microorganisms by irradiating it with ultraviolet light, and discharges the ultra-purified water into a second tank 31j.

[0043] (Second Tank 31j) The second tank 31j has a capacity of, for example, 2 liters, and stores the ultrapure water generated in the second treatment device 31i. The ultrapure water stored in the second tank 31j is supplied to the water electrolysis device 33 as an electrolyte. Moreover, the ultrapure water stored in the second tank 31j is discharged to the outside of the housing 2 through the water discharge port 60 as drinking water.

[0044] (Liquid feed pipe 31k) The liquid transfer pipe 31k connects the dehumidifier 31a, the water intake section 31b, and the first pump 31c, connects the first pump 31c and the filter 31d, connects the filter 31d and the first treatment device 31e, connects the first treatment device 31e, the water quality sensor 31f, and the dryer 34, connects the water quality sensor 31f and the first tank 31g, connects the first tank 31g and the second pump 31h, connects the second pump 31h and the second treatment device 31i, connects the second treatment device 31i and the second tank 31j, connects the second tank 31j and the water electrolysis device 33, and connects the second tank 31j and the water outlet 60.

[0045] (Water electrolysis device 33) The water electrolysis device 33 performs electrolysis of the electrolyte supplied from the electrolyte supply unit 31 based on the electric power supplied from the first power generation device 11 or the like, to generate hydrogen and oxygen. The water electrolysis device 33 is, for example, an electrolysis device that uses a PEM (Polymer Electrolyte Membrane). The hydrogen generated in the water electrolysis device 33 is supplied to the hydrogen tank 35 via the dryer 34. The hydrogen generated in the water electrolysis device 33 may be supplied to the second power generation device 12 via the dryer 34 without being stored in the hydrogen tank 35. The oxygen generated in the water electrolysis device 33 is supplied to the second power generation device 12 via a dryer . However, the oxygen generated in the water electrolysis device 33 may be discharged to the outside of the housing 2.

[0046] (Dryer 34) The dryer 34 removes water contained in the oxygen and hydrogen generated in the water electrolysis device 33 . The water removed by the dryer 34 passes through a liquid transfer pipe 31k and is supplied to a first tank 31g via a water quality sensor 31f.

[0047] (Hydrogen tank 35) The hydrogen tank 35 has a hydrogen storage alloy that absorbs hydrogen, and a container that holds the hydrogen storage alloy. The container of the hydrogen tank 35 holds the hydrogen storage alloy inside. The hydrogen tank 35 absorbs hydrogen under high pressure or low temperature, and releases the absorbed hydrogen when the hydrogen tank 35 is not under the high pressure or low temperature. The hydrogen tank 35 is connected to the second power generating unit 12 and the dryer 34 via a connecting pipe 36 .

[0048] At least one of the hydrogen tank 35 and the communication pipe 36 is provided with a detection device 35a such as a strain sensor or a flow rate sensor. The detector 35a is used to calculate the hydrogen filling level of the hydrogen tank 35 (hydrogen filling rate R2).

[0049] The hydrogen tank 35 is held by a tank holder (not shown). Furthermore, the tank holder or other temperature adjustment device cools the hydrogen tank when hydrogen is stored, and stops the cooling or heats the tank when hydrogen is released. In this embodiment, the hydrogen tank 35 stores hydrogen by absorbing it in a storage alloy. However, the hydrogen tank 35 may store any of an organic hydride containing hydrogen, liquefied hydrogen, and compressed gaseous hydrogen.

[0050] (Conversion unit 40) The conversion unit 40 includes a first conversion device 41 , a second conversion device 42 , and a third conversion device 43 .

[0051] (First conversion device 41) The first conversion device 41 includes a DC / AC inverter and the like. The first conversion device 41 converts the electric power from the first power generation device 11 and the electric power from the power storage unit 20 from direct current to alternating current, and also converts the converted electric power to a predetermined current and voltage, and supplies the converted electric power to the power supply device 5.

[0052] (Second conversion device 42) The second conversion device 42 includes a DC / AC inverter and the like. The second conversion device 42 converts the power from the second power generation device 12 from direct current to alternating current, and also converts it to a predetermined current and voltage, and supplies it to the power supply device 5, the third conversion device 43, and electrical equipment connected to the output terminal 50.

[0053] (Third conversion device 43) The third conversion device 43 is a charging device including an AC / DC converter, a DC / DC converter, and the like. The third conversion device 43 converts the power from the power storage unit 20 from DC to AC, and further converts it into a desired current and voltage, and supplies it to an electric device connected to the output terminal 50. Further, the third conversion device 43 converts the power from the second conversion device 42 from AC to DC, and also converts the power to a current and voltage suitable for charging the power storage unit 20, and supplies the power storage unit 20 with the converted power.

[0054] (Output terminal 50) The output terminal 50 is a terminal for connecting the housing 2 to an external electric device. The output terminal 50 may be connected to not only an electric device but also a commercial power source. In this case, the electric power obtained by the second power generation device 12 and the electric power stored in the power storage unit 20 are supplied to the commercial power source via the output terminal 50.

[0055] (Water outlet 60) Ultrapure water from the second tank 31j is discharged as drinking water via the water outlet 60. The water outlet 60 communicates with the second tank 31j via the liquid transport pipe 31k, but may also communicate with the first tank 31g via the liquid transport pipe 31k. In this case, pure water from the first tank 31g is discharged as drinking water through the water outlet 60.

[0056] (Operation control of the control device 7) Next, an example of the operational control of the control device 7 will be described. The control device 7 performs on / off control of the water electrolysis device 33 and the like depending on the usage mode (hydrogen storage priority mode, drinking water storage priority mode, power supply priority mode) in which the drinking water supply system 1 is set. The usage mode is set by the user via an operation unit (not shown) provided on the housing 2 or a terminal that communicates with the drinking water supply system 1. However, the control device 7 may set the usage mode based on the surrounding conditions of the drinking water supply system 1 (temperature T and humidity S around the drinking water supply system 1), the usage status of the drinking water supply system 1 (power consumption W by electrical equipment connected to the output terminal 50, flow rate L of ultrapure water discharged through the water outlet 60), etc.

[0057] For example, when the temperature T is higher than or equal to the temperature threshold value ThT, there is a high probability that the first power generation device 11 will be able to supply sufficient power, i.e., there is little need to operate the second power generation device 12, so the control device 7 sets the usage mode of the drinking water supply system 1 to the hydrogen storage mode.

[0058] Furthermore, for example, when the humidity S is higher than or equal to the humidity threshold value ThS and / or the flow rate L is higher than or equal to the flow rate threshold value ThL, there is a high possibility that a large amount of ultrapure water can be produced and / or that a large amount of ultrapure water will be consumed as drinking water, so the control device 7 sets the usage mode of the drinking water supply system 1 to a drinking water storage priority mode.

[0059] Furthermore, for example, when the power consumption W is equal to or greater than the power consumption threshold ThW, the control device 7 sets the use mode of the drinking water supply system 1 to the power supply priority mode.

[0060] (Hydrogen storage priority mode) When the usage mode of the drinking water supply system 1 is set to the hydrogen storage priority mode, the control device 7 drives the water electrolysis device 33 so that as much hydrogen as possible is accumulated in the hydrogen tank 35 . As long as the power supply device 5 is capable of operating based on the power supplied from the first power generation device 11 and the power supplied from the power storage unit 20, and can drive the electrical equipment connected via the output terminal 50 based on the power supplied from the power storage unit 20, the control device 7 will not drive the second power generation device 12. Specifically, when the charging rate R1 of the power storage unit 20 is higher than or equal to a first charging rate threshold Thr11 (for example, Thr11=60%) and the second power generation device 12 is operating, the control device 7 stops the second power generation device 12. When the charging rate R1 of the power storage unit 20 is lower than a second charging rate threshold Thr12 (for example, Thr12 = 40%) that is lower than the first charging rate threshold Thr1 and the second power generation device 12 is stopped, the control device 7 drives the second power generation device 12. In the hydrogen storage priority mode, the water electrolysis device 33 and the dryer 34 are constantly operated. However, when the hydrogen filling rate R2 of the hydrogen tank 35 is equal to or higher than a first hydrogen filling rate threshold Thr21 (for example, Thr21=90%), the control device 7 may stop the water electrolysis device 33 and the dryer .

[0061] (Drinking water storage priority mode) When the usage mode of the drinking water supply system 1 is set to the drinking water storage priority mode, the control device 7 drives the electrolyte supply unit 31 so that as much drinking water as possible is accumulated in the first tank 31g and the second tank 31j. As long as the power supply device 5 is capable of operating based on the power supplied from the first power generation device 11, the power supplied from the second power generation device 12, and the power supplied from the power storage unit 20, and can drive the electrical equipment connected via the output terminal 50 based on the power supplied from the second power generation device 12 and the power supplied from the power storage unit 20, the control device 7 does not drive the water electrolysis device 33 and the dryer 34. Specifically, when the hydrogen filling rate R2 of the hydrogen tank 35 is higher than or equal to the first hydrogen filling rate threshold Thr21 and the water electrolysis device 33 and the dryer 34 are operating, the control device 7 stops the water electrolysis device 33 and the dryer 34. When the hydrogen filling rate R2 of the hydrogen tank 35 is lower than a second hydrogen filling rate threshold Thr22 (for example, Thr22 = 10%) and the water electrolysis device 33 and the dryer 34 are stopped, the control device 7 drives the water electrolysis device 33 and the dryer 34. In the drinking water storage priority mode, the second power generating device 12 is constantly driven. However, when the hydrogen filling rate R2 of the hydrogen tank 35 is lower than a second hydrogen filling rate threshold Thr22, the control device 7 may stop the second power generation device 12.

[0062] (Power supply priority mode) When the usage mode of the drinking water supply system 1 is set to the power supply priority mode, the control device 7 drives the second power generation device 12, the water electrolysis device 33, and the dryer 34 so that power is supplied to the electrical equipment connected to the output terminal 50 via the output terminal 50. However, when the load of the electrical device connected to the output terminal 50 is small and the charging rate R1 of the power storage unit 20 is higher than or equal to the first charging rate threshold Thr11, the control device 7 may stop the second power generation device 12. Furthermore, when the hydrogen filling rate R2 of the hydrogen tank 35 is equal to or higher than the first hydrogen filling rate threshold Thr21, the controller 7 may stop the water electrolysis device 33 and the dryer 34.

[0063] (Examples of converter applications) At least two of the first conversion device 41, the second conversion device 42, and the third conversion device 43 may be integrally configured.

[0064] (Example of power generation equipment application) The drinking water supply system 1 may be provided with a power generation device that generates power based on heat, such as a Peltier element, at a portion of the drinking water supply system 1 that generates heat (see FIG. 2). For example, a third power generating device 13 is provided on the top or side surface of the housing 2, and a fourth power generating device 14 is provided around the second power generating device 12. The electric power obtained by the third power generation device 13 is supplied to the power supply device 5 via the first conversion device 41. The electric power obtained by the fourth power generating device 14 is supplied to the power supply device 5 via the second conversion device 42.

[0065] (Example of application of power supply to water electrolysis device 33) In this embodiment, an example has been described in which power is supplied from the power supply device 5 to the water electrolysis device 33. However, power may be supplied directly from the first conversion device 41 to the water electrolysis device 33 without going through the power supply device 5 (see FIG. 2).

[0066] (Application example of water circulation structure) In the present embodiment, the water treated in the second treatment device 31i is stored in the second tank 31j. However, a circulation path 31k1 may be further provided in which the water treated in the second treatment device 31i or the water stored in the second tank 31j is returned to the upstream of the first treatment device 31e (see FIG. 2). For example, if the water accumulated in the second tank 31j is not supplied to the water electrolysis device 33 or discharged through the water outlet 60 for a first time t1 (e.g., t1 = 10 days) or longer, the water in the second tank 31j may have deteriorated, and the water accumulated in the second tank 31j is returned to the first treatment device 31e via the circulation path 31k1.

[0067] (Effect of supplying water to the first power generating unit, etc.) Water around the drinking water supply system 1 is collected using electricity from the first power generation device 11 based on natural energy, etc. This makes it possible to supply water without receiving electricity from an external source such as a commercial power source. Moreover, the water obtained by the dehumidifier 31a or the like can not only be discharged to the outside of the drinking water supply system as drinking water, but also can be used as an electrolyte for generating hydrogen. Therefore, if the drinking water supply system 1 is installed in an area such as a mountain hut where it is difficult to receive electricity from outside and where it is not easy to obtain drinking water from outside, it will be possible to easily provide drinking water and generate electricity.

[0068] (Effect of circulating in a dryer) The water obtained by the dryer 34, together with the water obtained by the dehumidifier 31a and the like, can be used as drinking water or an electrolyte.

[0069] (Effect of providing the first tank 31g and the second tank 31j) Compared to producing ultra-pure water using a single treatment device, this method makes it possible to purify water in stages without placing a heavy load on each treatment device.

[0070] (Effect of providing output terminal 50) Via the output terminal 50, it becomes possible to supply the power obtained by the drinking water supply system to external electrical equipment, etc.

[0071] (Effect of switching usage modes) By prioritizing either the accumulation of hydrogen, the accumulation of drinking water, or the supply of power to the outside, it becomes possible to efficiently produce drinking water and other resources.

[0072] (Effects of installing a heat-based power generation device) It becomes possible to efficiently generate electricity using the heat-generating parts of the drinking water supply system 1.

[0073] (Effect of establishing a water circulation structure using circulation route 31k1) This makes it easier to maintain the quality of the water supplied by the drinking water supply system 1 at a high level.

[0074] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope of the invention and its equivalents described in the claims, as well as in the scope and spirit of the invention. [Explanation of symbols]

[0075] 1. Drinking water supply system 2. Chassis 5 Power supply 7 Control device 10 Power Generation Section 11 First power generating unit 12 Second power generating unit 13 Third power generating unit 14 Fourth Generator Unit 20 Power storage unit 30 Hydrogen Generation Unit 31 Electrolyte supply section 31a Dehumidifier 31b Water intake section 31c First pump 31d Filter 31e First processing device 31f Water quality sensor 31g 1st Tank 31h Second pump 31i Second processing unit 31j 2nd Tank 31k liquid feed pipe 31k1 Circulation route 33 Water electrolysis equipment 34 Hair dryer 35 Hydrogen Tank 35a Detection device 36 Communication pipe 40 Conversion unit 41 First conversion device 42 Second conversion device 43 Third conversion device 50 Output terminal 60 Water outlet L Flow rate of ultrapure water discharged through the water outlet R1: Charge rate of the first storage device R2 Hydrogen tank hydrogen filling rate S Humidity around the drinking water supply system T is the air temperature surrounding the drinking water supply system Thr11 1st charge rate threshold (full charge) Thr12 Second charge rate threshold Thr21 First hydrogen filling rate threshold Thr22 Second hydrogen filling rate threshold ThL Flow Threshold ThS Humidity Threshold ThT Temperature Threshold ThW Power consumption threshold W Power consumption of electrical equipment connected to the output terminals

Claims

1. A first power generating device that generates power based on natural energy; a power storage unit that stores the power generated by the first power generation device; a hydrogen generating unit that performs electrolysis of an electrolytic solution to generate hydrogen and accumulates the hydrogen; A second power generation device that generates power based on the hydrogen obtained by the hydrogen generation unit; a water outlet, The hydrogen generating unit has an electrolyte supply unit and a water electrolysis device, the hydrogen generation unit performs the electrolysis based on at least one of the power obtained by the first power generation device, the power stored in the power storage unit, and the power obtained by the second power generation device; The electrolyte supply unit has a dehumidifier, The dehumidifier includes a cooling plate, a heat dissipation plate, and a thermoelectric element provided between the cooling plate and the heat dissipation plate, The water obtained by the dehumidification device is supplied to the water electrolysis device as the electrolytic solution; The water obtained by the dehumidifier is discharged from the water outlet as drinking water, the electrolytic solution supply unit includes a first treatment device, a first tank, a second treatment device, and a second tank; The capacity of the first tank is greater than the capacity of the second tank, The first treatment device performs at least one of filtering and irradiating with ultraviolet light to convert the water obtained by the dehumidification device into pure water, and supplies the generated pure water to the first tank; The second treatment device performs at least one of filtration and ultraviolet irradiation to convert the pure water in the first tank into ultrapure water, and supplies the generated ultrapure water to the second tank.

2. a dryer for removing water contained in the oxygen and hydrogen generated in the water electrolysis device; Further equipped with a hydrogen tank, The hydrogen obtained by the water electrolysis apparatus is supplied to the hydrogen tank via the dryer, 2. The drinking water supply system according to claim 1, wherein the water removed by the dryer is supplied to the water electrolysis device as the electrolyte and is discharged from the water outlet.

3. A first power generating device that generates power based on natural energy; a power storage unit that stores the power generated by the first power generation device; a hydrogen generating unit that performs electrolysis of an electrolytic solution to generate hydrogen and accumulates the hydrogen; A second power generation device that generates power based on the hydrogen obtained by the hydrogen generation unit; a water outlet, The hydrogen generating unit has an electrolyte supply unit and a water electrolysis device, the hydrogen generation unit performs the electrolysis based on at least one of the power obtained by the first power generation device, the power stored in the power storage unit, and the power obtained by the second power generation device; The electrolyte supply unit has a dehumidifier, The dehumidifier includes a cooling plate, a heat dissipation plate, and a thermoelectric element provided between the cooling plate and the heat dissipation plate, The water obtained by the dehumidification device is supplied to the water electrolysis device as the electrolytic solution; The water obtained by the dehumidifier is discharged from the water outlet as drinking water, a dryer for removing water contained in the oxygen and hydrogen generated in the water electrolysis device; Further equipped with a hydrogen tank, The hydrogen obtained by the water electrolysis apparatus is supplied to the hydrogen tank via the dryer, The water removed by the dryer is supplied to the water electrolysis apparatus as the electrolytic solution and discharged from the water outlet; the electrolytic solution supply unit includes a first treatment device, a first tank, a second treatment device, and a second tank; The capacity of the first tank is greater than the capacity of the second tank, The first treatment device performs at least one of filtering and irradiating with ultraviolet light to convert the water obtained by the dehumidification device into pure water, and supplies the generated pure water to the first tank; The second treatment device performs at least one of filtration and ultraviolet irradiation to convert the pure water in the first tank into ultrapure water, and supplies the generated ultrapure water to the second tank.

4. Further comprising an output terminal, The power storage unit is also capable of storing the power obtained by the second power generation device, The drinking water supply system according to claim 3 , wherein the electric power obtained by the second power generating device is supplied to an electric device or a commercial power source connected to the output terminal.

5. a hydrogen storage priority mode in which the water electrolysis device is driven to give priority to accumulating hydrogen in the hydrogen tank, a water storage priority mode in which the electrolyte supply unit is driven to give priority to accumulating drinking water in the first tank and the second tank, or a power supply priority mode in which power supply to an electrical device connected to the output terminal is given priority is set as a usage mode of the drinking water supply system based on at least one of a user's selection, the surrounding conditions of the drinking water supply system, and a usage state of the drinking water supply system; When the ambient temperature of the drinking water supply system is higher than or equal to a temperature threshold, the usage mode is set to the hydrogen storage priority mode; When the humidity around the drinking water supply system is higher than or equal to a humidity threshold value, and / or when the flow rate of the water discharged through the water outlet is higher than or equal to a flow rate threshold value, the usage mode is set to the water storage priority mode; The drinking water supply system according to claim 4 , wherein when the amount of power consumption by the electrical device connected to the output terminal is equal to or greater than a power consumption threshold, the usage mode is set to the power supply priority mode.

6. a hydrogen storage priority mode in which the water electrolysis device is driven to prioritize the accumulation of hydrogen in the hydrogen tank, a water storage priority mode in which the electrolyte supply unit is driven to prioritize the accumulation of drinking water in the first tank and the second tank, or a power supply priority mode in which power supply to the electrical device connected to the output terminal is prioritized is set as a usage mode of the drinking water supply system based on the ambient temperature and humidity of the drinking water supply system, the amount of power consumed by the electrical device connected to the output terminal, and the flow rate of water discharged through the water outlet, When the air temperature is higher than or equal to a temperature threshold, the usage mode is set to the hydrogen storage priority mode; If the humidity is greater than or equal to a humidity threshold and / or if the flow rate is greater than or equal to a flow rate threshold, the usage mode is set to the water storage priority mode; The drinking water supply system according to claim 4 , wherein when the power consumption is equal to or greater than a power consumption threshold, the usage mode is set to the power supply priority mode.

7. A first power generating device that generates power based on natural energy; a power storage unit that stores the power generated by the first power generation device; a hydrogen generating unit that performs electrolysis of an electrolytic solution to generate hydrogen and accumulates the hydrogen; A second power generation device that generates power based on the hydrogen obtained by the hydrogen generation unit; A drinking water supply system comprising: The hydrogen generating unit has an electrolyte supply unit and a water electrolysis device, the hydrogen generation unit performs the electrolysis based on at least one of the power obtained by the first power generation device, the power stored in the power storage unit, and the power obtained by the second power generation device; The electrolyte supply unit has a dehumidifier, The dehumidifier includes a cooling plate, a heat dissipation plate, and a thermoelectric element provided between the cooling plate and the heat dissipation plate, The water obtained by the dehumidification device is supplied to the water electrolysis device as the electrolytic solution; The water obtained by the dehumidifier is discharged from the water outlet as drinking water, A third power generation device and a fourth power generation device are further provided at a heat generating portion in the drinking water supply system, the third power generation device and the fourth power generation device generating electricity based on the heat, The third power generation device is provided on an upper surface or a side surface of a housing of the drinking water supply system, the fourth power generation device is provided around the second power generation device, A drinking water supply system, wherein at least one of the third power generation device and the fourth power generation device and the thermoelectric element of the dehumidification device include a Peltier element.

8. A drinking water supply system as described in any one of claims 3 to 6, wherein at least one of the ultrapure water obtained in the second treatment device and the ultrapure water accumulated in the second tank is returned to the upstream stage of the first treatment device via a circulation path, and is subjected to at least one of filtration and ultraviolet irradiation again in the first treatment device.

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