Underwater potential generating device, underwater organism growth promoting device, water freshness preserving device, and atmospheric potential generating device

Abstract

To provide an underwater electric potential generator capable of forming an AC electric field in water of any location such as a pond, a lake, a river, or the sea without being limited to the water in a water tank, and capable of being used without the risk of electric shock even if a discharge part is not insulated, and also to provide a growth promotion device for underwater organisms, a water freshness preservation device, and an air electric potential generator using the same. [Solution] The underwater electric potential generating device 1 forms an AC electric field around a discharge unit 6 placed underwater, and includes a sine wave generating circuit 2 that generates a sine wave signal, an intensity adjustment circuit 3, a first transformer T1, a second transformer T2, a feedback circuit 4, an aerial antenna 7, an overcurrent protection circuit 5, and the discharge unit 6 connected to the other terminal of the second secondary coil via the overcurrent protection circuit.

Description

[Technical field]

[0001] The present invention relates to an underwater electric potential generating device capable of safely forming an AC electric field in water of any location, such as an aquarium, pond, lake, river, or ocean, as well as a growth promotion device for aquatic organisms, a water freshness preservation device, and an atmospheric electric potential generating device that utilize the same. [Background technology]

[0002] Patent Document 1 describes a water activation device and aquaculture device that create an AC electric field in water by placing an electrode unit (discharge unit) in the water. In this water activation device and aquaculture device, the water in which the electrode unit is placed must be stored in an aquarium. In addition, in this water activation device and aquaculture device, as described in paragraph 0219 of Patent Document 1, the electrode unit must be covered with an insulating material and insulated from the water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2019 / 097591 Summary of the Invention [Problem to be solved by the invention]

[0004] The underwater electric potential generating device as described in Patent Document 1 has a problem in that it requires water to be placed in a tank, and cannot be used in water other than tanks such as ponds, lakes, rivers, oceans, etc. In addition, there is a problem in that it cannot be used unless the discharge part that is placed in the water is insulated, due to the risk of electric shock.

[0005] The present invention has been made to solve the above-mentioned problems, and aims to provide an underwater electric potential generating device that can form an AC electric field in water of any location, such as a pond, lake, river, or ocean, not limited to the water in an aquarium, and that can be used without the risk of electric shock even if the discharge part is not insulated, as well as a growth promotion device for aquatic organisms, a water freshness preservation device, and an air potential generating device that utilize the same. [Means for solving the problem]

[0006] The underwater electric potential generating device described in claim 1, which has been made to achieve the above object, is an underwater electric potential generating device that forms an AC electric field around a discharge unit disposed underwater, and includes a sine wave generating circuit that generates a sine wave signal, an intensity adjusting circuit for adjusting the intensity of the sine wave signal generated by the sine wave generating circuit, a first transformer having a first primary coil to which the sine wave signal whose intensity has been adjusted by the intensity adjusting circuit is input and a first secondary coil magnetically coupled to the first primary coil, a second primary coil connected to the first secondary coil of the first transformer, and The power supply comprises a second transformer having a second secondary coil magnetically coupled to the second primary coil, a feedback circuit returning an output of one terminal of the second secondary coil to one terminal of the second primary coil in order to adjust the output voltage at the second secondary coil of the second transformer, an air antenna for radiating a portion of the output of the one terminal of the second secondary coil into the air, an overcurrent protection circuit for preventing an overcurrent from being output from the other terminal of the second secondary coil, and the discharge unit connected to the other terminal of the second secondary coil via the overcurrent protection circuit.

[0007] The underwater electric potential generating device according to claim 2 is the device according to claim 1, characterized in that the sine wave generating circuit generates the sine wave signal with a frequency of 55 to 60 Hz.

[0008] The underwater electric potential generating device described in claim 3 is the device described in claim 1, and the discharge section has a maximum value of a waveform. (1 / 2 the peak-to-peak value)The voltage applied is 5 to 650 V when expressed as

[0009] The underwater electric potential generating device according to claim 4 is the underwater electric potential generating device according to claim 1, and further includes a second secondary coil having a maximum value of a waveform. (1 / 2 the peak-to-peak value) It is characterized by a current of 0.01 to 0.1 mA when expressed as

[0010] The underwater electric potential generating device according to claim 5 is the device according to claim 1, characterized in that the discharge unit is disposed within a depth of 2 m from the water surface.

[0011] The underwater electric potential generating device described in claim 6 is the one described in claim 1, and the aerial antenna is provided with a maximum value of a waveform. (1 / 2 the peak-to-peak value) The voltage applied is 5 to 300 V when expressed as

[0012] The underwater electric potential generating device described in claim 7 is the one described in claim 1, characterized in that the aerial antenna is positioned outside the water within a distance of 5 m from the water surface directly above the discharge unit placed underwater.

[0013] The growth promotion device for aquatic organisms described in claim 8 is a growth promotion device for aquatic organisms that uses the underwater electric potential generating device described in claims 1 to 7, characterized in that the discharge unit is placed in the water in which the aquatic organisms are kept.

[0014] The water freshness preservation device described in claim 9 is a water freshness preservation device that uses the underwater electric potential generating device described in claims 1 to 7, and is characterized in that the discharge unit is placed in water that needs to be kept fresh.

[0015] The atmospheric electric potential generating device described in claim 10 is an atmospheric electric potential generating device using the underwater electric potential generating device described in claims 1 to 7, characterized in that the aerial antenna is placed in the air and forms an AC electric field around it. Effect of the Invention

[0016] According to the underwater electric potential generating device of the present invention, a sine wave signal generated by a sine wave generating circuit is applied to an aerial antenna in the air and to a discharge part in the water via an intensity adjusting circuit, a first transformer, and a second transformer. This forms a specific AC electric field around the aerial antenna in the air, and the specific AC electric field in the air acts on the water, and a specific AC voltage is applied to the discharge part in the water. This interaction allows a stable AC electric field of sufficient strength to be formed in the water of any location, such as a pond, a lake, a river, or the sea, without being limited to the water in an aquarium. Furthermore, according to the underwater electric potential generating device of the present invention, by having a first transformer, a second transformer, and an overcurrent protection circuit, electric shock can be prevented even if the discharge part is not insulated, and it can be used safely.

[0017] When the sine wave generating circuit generates a sine wave signal with a frequency of 55 to 60 Hz, an AC electric field that is more stable and of sufficient strength can be formed in water.

[0018] An AC electric field of sufficient strength can be formed in the water in a more stable manner when a voltage of 5 to 650 V is applied to the discharge part, when a current of 0.01 to 0.1 mA flows through the second secondary coil, when the discharge part is placed within a depth of 2 m from the water surface, when a voltage of 5 to 300 V is applied to the aerial antenna, when the voltage is expressed as the maximum value of the waveform, and / or when the aerial antenna is placed outside the water within a distance of 5 m from the water surface directly above the discharge part placed underwater.

[0019] When the underwater electric potential generating device of the present invention is used as a growth promotion device for aquatic organisms and the discharge unit is placed in the water in which the aquatic organisms are kept, an AC electric field is formed in the water, activating the water, and the AC electric field is applied directly to the aquatic organisms, activating the cells of the aquatic organisms, thereby promoting the growth of the aquatic organisms.

[0020] When the underwater electric potential generating device of the present invention is used as a water freshness preservation device with the discharge section placed in water, an AC electric field is formed in the water, activating the water and thereby preserving the freshness of the water.

[0021] Since an AC electric field is formed around the aerial antenna of the underwater electric potential generating device of the present invention, this airborne AC electric field can be utilized as an airborne electric potential generating device. [Brief description of the drawings]

[0022] [Figure 1] 1 is a circuit diagram showing the configuration of an underwater electric potential generating device to which the present invention is applied. [Diagram 2] 1 is a schematic diagram showing a state in which an underwater electric potential generating device according to the present invention is used; [Diagram 3] This is a photograph showing the underwater electric potential generator we created being used in a sink (without earth). [Figure 4] This is a photograph showing the underwater electric potential generator we created being used in a sink (with earth). [Diagram 5] 5 is a photograph showing the state of observing the waveform of an AC electric field in water in the state shown in FIG. 4. [Figure 6] This is a photograph showing fish being raised using the underwater electric potential generating device that we created. [Figure 7] This is a photograph showing the state in which the underwater electric potential generating device that was manufactured is operated in a pond and the AC electric field formed in the pond is being measured. [Figure 8] This is a photograph showing the underwater electric potential generating device being operated in the ocean to measure the AC electric field generated in the ocean. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, the embodiments for carrying out the present invention will be described in detail, but the scope of the present invention is not limited to these embodiments. In this specification and each figure, the same reference numerals are used for the same configurations as those described above with respect to the previous figures, and detailed descriptions may be omitted as appropriate. In addition, when a range is indicated as A to B in this specification and claims, it means A or more and B or less, unless otherwise specified.

[0024] The configuration of an underwater electric potential generator 1 to which the present invention is applied is shown in Figure 1. The underwater electric potential generator 1 forms an AC electric field around a discharge unit 6 placed underwater. The underwater electric potential generator 1 includes a sine wave generating circuit 2, an intensity adjusting circuit 3, a first transformer T1, a second transformer T2, a feedback circuit 4, an overcurrent protection circuit 5, a discharge unit 6, an aerial antenna 7, and a power supply unit 11.

[0025] The sine wave generating circuit 2 is a circuit that generates a sine wave signal that is the source of an AC signal for forming an AC electric field. There is no limitation on the frequency of the sine wave signal generated by the sine wave generating circuit 2 (for example, 30 to 100 Hz), but it is preferable that the sine wave generating circuit 2 generates a sine wave signal with a frequency of 55 to 60 Hz. This preferable frequency range was found by the inventors as a result of extensive research.

[0026] The sine wave generating circuit 2 may be a known circuit capable of outputting a sine wave signal, such as an RC oscillator, a Wien bridge oscillator, a DDS (direct digital synthesizer), a programmable waveform generator, or a DSP (digital signal processing) signal generator. A commercially available semiconductor integrated circuit or a sine wave oscillator unit may also be used. The figure shows an example of a circuit using a commercially available IC capable of generating a sine wave. The sine wave generating circuit 2 is preferably one that can set the frequency precision of the sine wave to a high level, has small frequency fluctuations, has little distortion in the waveform, and has small amplitude fluctuations. For this reason, the sine wave generating circuit 2 is preferably one that operates based on the oscillation signal of a crystal oscillator (crystal resonator) to generate a sine wave signal, such as one in which an operating clock is generated from the oscillation signal of a crystal oscillator (crystal oscillator) or the oscillation frequency of the crystal oscillator is divided and used.

[0027] The sine wave generating circuit 2 is connected to the intensity adjusting circuit 3. The sine wave signal generated by the sine wave generating circuit 2 is input to the intensity adjusting circuit 3 for adjusting the intensity of the sine wave signal. The intensity adjusting circuit 3 can be any of various known circuits as long as it is a circuit capable of adjusting the intensity of the sine wave signal, such as the voltage intensity and current intensity. As an example, the intensity adjusting circuit 3 is an amplifier circuit. As an example, the same figure shows an example in which the intensity adjusting circuit 3 is composed of an amplifier circuit 21, a variable resistor 22, and an amplifier circuit 23 (including a push-pull circuit 24).

[0028] An amplifier circuit 21 is connected to the output of the sine wave generating circuit 2. The amplifier circuit 21 is, for example, a known non-inverting amplifier circuit, and amplifies the intensity of the sine wave signal. A variable resistor 22 is connected to the output of the amplifier circuit 21, and the intensity of the sine wave signal can be adjusted by manipulating the variable resistor 22. An amplifier circuit 23 is connected to the output of the variable resistor 22. The amplifier circuit 23 is, for example, a known non-inverting amplifier circuit, and amplifies the intensity of the sine wave signal. The amplifier circuit 23 has a known push-pull circuit 24 at its output. The push-pull circuit 24 is provided to increase the current driving (current output) capability of the amplifier circuit 23. The output of the amplifier circuit 23, that is, the output of the push-pull circuit 24, is the output of the intensity adjusting circuit 3. The amplifier circuit 21, the amplifier circuit 23, and the push-pull circuit 24 operate on both positive and negative power supplies supplied from the power supply unit 11.

[0029] The sine wave signal adjusted to an appropriate intensity by the intensity adjustment circuit 3 is input to the first primary coil 31 of the first transformer T1. Specifically, the output of the intensity adjustment circuit 3 is connected to one terminal (the upper terminal in the figure) of the first primary coil 31. The other terminal (the lower terminal in the figure) of the first primary coil 31 is connected to a ground electrode (a potential that is a reference for the voltage of the circuit) in the device. The first transformer T1 has a first secondary coil 32 magnetically coupled to the first primary coil 31.

[0030] The first secondary coil 32 of the first transformer T1 is connected to the second primary coil 33 of the second transformer T2. Specifically, one terminal of the first secondary coil 32 is connected to one terminal of the second primary coil 33 (the upper terminal in the figure), and the other terminal of the first secondary coil 32 is connected to the other terminal of the second primary coil 33 (the lower terminal in the figure). The second transformer T2 has a second secondary coil 34 magnetically coupled to the second primary coil 33.

[0031] A feedback circuit 4 is provided which returns the output of one terminal of the second secondary coil 34 to one terminal of the second primary coil 33 in order to adjust the output voltage at the second secondary coil 34 of the second transformer T2.

[0032] The feedback circuit 4 is not limited and may be any known circuit as long as it is capable of adjusting (setting) the feedback voltage. The feedback circuit 4 may be, for example, an impedance element having an impedance such as a resistor or a capacitor, a voltage divider circuit combining impedance elements, or a known voltage adjustment circuit.

[0033] Since the current generated on the second secondary coil 34 side is fed back to the second primary coil 33 by the feedback circuit 4, the second transformer T2 can generate a high voltage on the second secondary coil 34 side with a small number of turns.

[0034] The aerial antenna 7 is for radiating a part of the output of one terminal of the second secondary coil 34 into the air. In this example, the feedback circuit 4 also serves as a circuit for adjusting (setting) the output intensity of the aerial antenna 7 to a desired intensity, so the aerial antenna 7 is connected to the feedback circuit. The aerial antenna 7 may be connected to one terminal of the second secondary coil 34 via a circuit for adjusting the air radiation intensity, if necessary. The circuit for adjusting the air radiation intensity may be any known voltage adjustment circuit, for example, an impedance element having an impedance such as a resistor or a capacitor, a voltage divider circuit combining impedance elements, or a known voltage adjustment circuit. A sinusoidal AC electric field is formed in the air by radiation from the aerial antenna 7.

[0035] The aerial antenna 7 is made of a conductive metal and is formed in any shape, such as a plate, sheet, rod, straight line, curved line, or ring. When the aerial antenna 7 is in the shape of a plate or sheet, it may have one or more openings. The aerial antenna 7 is preferably shaped so that an electric field of the frequency of the sine wave signal can be efficiently radiated into the air. The aerial antenna 7 may be disposed inside the housing (not shown) of the underwater electric potential generating device 1, or may be disposed inside, on the inner or outer surface of the top plate, bottom plate, or side plate of the housing, or may be disposed outside the housing via an electric wire (cable) of any length connected to the housing (circuit of the device).

[0036] The overcurrent protection circuit 5 is for preventing an overcurrent from being output from the other terminal of the second secondary coil 34 of the second transformer T2. A discharge unit 6 is connected to the other terminal of the second secondary coil 34 via the overcurrent protection circuit 5. A sine wave signal generated by the sine wave generating circuit 2 is applied to the discharge unit 6 with its level appropriately adjusted by each circuit up to the previous stage.

[0037] The overcurrent protection circuit 5 is not limited and may be any known circuit as long as it is a circuit that can prevent an excessive current from flowing so as not to cause an electric shock. The overcurrent protection circuit 5 may be, for example, an impedance element having an impedance such as a resistor or a capacitor, a thermistor, a fuse, a resettable fuse, or the like. The overcurrent protection circuit 5 is set so that a current exceeding a predetermined current value that is normally expected does not flow. Alternatively, the overcurrent protection circuit 5 may be a known circuit that includes a current detection unit and a cutoff unit, and the cutoff unit immediately cuts off the current output line when the current detection unit detects an overcurrent.

[0038] The discharge unit 6 is a conductive metal and is formed in any shape, such as a plate, sheet, rod, straight line, curved line, or ring. When the discharge unit 6 is in the form of a plate or sheet, it may have one or more openings. It is preferable that the discharge unit 6 has a shape that can efficiently radiate an electric field of the frequency of the sine wave signal into the water. The discharge unit 6 is placed in the water via an electric wire (cable) of any length that is connected to the housing (overcurrent protection circuit 5) of the underwater electric potential generator 1. The discharge unit 6 does not need to be insulated from water. The discharge unit 6 may be insulated by being covered with an insulating member.

[0039] The underwater electric potential generating device 1 is configured to operate by receiving DC power (DC voltage) from an external DC power source (not shown), for example. As shown in the figure, the underwater electric potential generating device 1 is provided with a power connector 12 that is connected to an external DC power source and receives DC power (e.g., DC 12 V). Although not shown, the underwater electric potential generating device 1 may be provided with a primary or secondary battery for supplying DC power for operation. Note that, although it is preferable for the underwater electric potential generating device 1 to operate by receiving DC power from an external source because this increases safety, it may also be provided with an AC-DC converter inside so that the underwater electric potential generating device 1 operates by receiving commercial AC power (e.g., AC 100 V power source) from an external source.

[0040] The positive and negative poles of the power connector 12 are each connected to the power supply unit 11. The positive pole of the power connector 12 is connected to the power line of the sine wave generating circuit 2. The negative pole of the power connector 12 is connected to a ground electrode in the device. Although not shown, a known power switch for turning on / off the power supply to the device may be provided at the output of the power connector 12.

[0041] The power supply unit 11 is configured to convert DC power input from the outside and generate positive and negative DC power that serves as a power source for operating the intensity adjustment circuit 3. For the power supply unit 11, a known voltage converter circuit (DC-DC conversion circuit) capable of generating positive and negative DC power can be used.

[0042] The ground electrode within the underwater electric potential generating device 1 is used without being grounded to the earth (earth).

[0043] The underwater electric potential generator 1 is preferably configured so that a voltage of 5 to 650 V is applied to the discharge unit 6 when expressed as the maximum value of the waveform (half the peak-to-peak value). The second secondary coil of the second transformer T2 is preferably configured so that a current of 0.01 to 0.1 mA flows when expressed as the maximum value of the waveform (half the peak-to-peak value). The aerial antenna 7 is preferably configured so that a voltage of 5 to 300 V is applied when expressed as the maximum value of the waveform (half the peak-to-peak value).

[0044] In order to obtain such voltages applied to the discharge unit 6 and the aerial antenna 7, and currents flowing through the second secondary coil, the signal strength generated by the sine wave generating circuit 2, the output strength (amplification factor) of the intensity adjusting circuit 3, the turns ratio of the first transformer T1, the turns ratio of the second transformer T2, the feedback amount of the feedback circuit 4, and the attenuation amount when the signal passes through the overcurrent protection circuit 5 can be appropriately set.

[0045] Next, the operation of the underwater electric potential generating device 1 will be described. Figure 2 shows the underwater electric potential generator 1 in use. The figure shows the underwater electric potential generator 1, water 101, and the earth 102. The underwater electric potential generator 1 (main body) is placed in a location outside the water 101 (for example, on land). The discharge unit 6 of the underwater electric potential generator 1 is placed in the water 101, and the aerial antenna 7 is placed outside the water 101 (in the air) immediately above the discharge unit 6. Although not shown, a DC power source is connected to the power connector 12 to supply DC power to the underwater electric potential generator 1.

[0046] Here, the water 101 in which the discharge unit 6 is placed may be in direct contact with the ground 102 as shown in the figure. The water 101 may also be stored in an enclosure such as a water tank without contacting the ground 102. In other words, the water 101 may be present in any location, such as a pond, lake, river, ocean, water tank, or bathtub. The quality of the water 101 is not limited, and any quality may be used, such as fresh water, salt water, seawater, electrolyzed water, or muddy water.

[0047] The water activation device and aquaculture device of Patent Document 1 described in the Background Art could hardly generate an AC electric field in the water when used on water 101 that is in direct contact with the earth 102. This is presumably because the AC electric field is absorbed by the earth 102, which is earth (electric potential 0V), since the water 101 is in contact with the earth 102. The effect is particularly noticeable in the sea, as seawater has a low resistance, and it has been very difficult to generate an AC electric field in seawater.

[0048] Through intensive research, the inventors of the present application have found that by providing the underwater electric potential generating device 1 with a discharge unit 6 and an aerial antenna 7 and applying the above-mentioned specific AC voltage to each of them, a stable AC electric field of sufficient strength can be formed around the discharge unit 6 in the water 101. In the underwater electric potential generating device 1 of the present invention, a specific AC electric field is formed around the aerial antenna 7 in the air. It is presumed that an AC electric field is formed around the discharge unit 6 in the water 101 due to the interaction between this specific AC electric field in the air acting on the water 101 and the specific AC voltage being applied to the discharge unit 6 in the water 101. For this reason, it can be said that it is preferable that the distance between the discharge unit 6 in the water and the aerial antenna 7 in the air is as close as possible.

[0049] The effective range of the AC electric field of the underwater electric potential generating device 1 of the present invention depends on the voltage applied to the discharge unit 6, but in the preferred voltage range described above (e.g., 5 to 650 V to the discharge unit 6), it is within a distance of 2 m from the discharge unit 6, and more preferably within a distance of 1 m from the discharge unit 6. Therefore, the discharge unit 6 (depth of the position of the lowest part of the discharge unit 6) is preferably placed within a depth of 2 m from the surface of the water 101, and more preferably within a depth of 1 m from the surface of the water. Also, depending on the voltage applied to the aerial antenna 7, in the preferred voltage range described above (e.g., 5 to 300 V to the aerial antenna 7), it is preferably placed outside the water (a place other than underwater) within a distance of 5 m from the water surface directly above the discharge unit 6, and more preferably placed outside the water (a place other than underwater) within a distance of 2 m from the water surface directly above the discharge unit 6.

[0050] FIG. 2 shows an example in which the underwater electric potential generator 1 is used as a growth promotion device for underwater organisms. As shown in the figure, the discharge unit 6 of the underwater electric potential generator 1 is placed in water in which an underwater organism 111 is kept. The figure shows an example in which the underwater organism 111 is a fish. As described above, the effective range of the underwater electric potential generator 1 is within a distance of 2 m from the discharge unit 6, and preferably within a distance of 1 m. Therefore, although it is preferable that the breeding range having the water 101 is as wide as the effective range of the AC electric field, since fish swim around, they pass through the effective range of the AC electric field when they approach the discharge unit 6, so the range of the water 101 in which the underwater organism 111 is kept may be wide.

[0051] Furthermore, by using a plurality of underwater electric potential generating devices 1, a plurality of discharge units 6 may be placed in the water 101 and a plurality of aerial antennas 7 may be placed outside the water 101. A plurality of underwater electric potential generating devices 1 may be housed in one (single) housing, that is, one underwater electric potential generating device 1 may be configured to have a plurality of discharge units 6 and aerial antennas 7, and a plurality of discharge units 6 may be placed in the water 101 and a plurality of aerial antennas 7 may be placed outside the water 101. In this way, by placing a plurality of discharge units 6 in the water 101, the effective range of the AC electric field in the water 101 can be widened. A single aerial antenna 7 may be shared by a plurality of discharge units 6.

[0052] The formation of an AC electric field in the water 101 activates the water 101, promoting the growth of the aquatic organisms 111. Furthermore, the AC electric field is directly applied to the aquatic organisms 111, activating the cells of the aquatic organisms 111, promoting the growth of the aquatic organisms 111.

[0053] The aquatic organisms 111 are not limited to fish, but may be any organism that lives in water, including crustaceans, shellfish, octopuses, squids, and the like.

[0054] 2 also shows an example in which the underwater electric potential generator 1 is used as a water freshness preservation device. By operating the underwater electric potential generator 1, water 101 to which an AC electric field is applied is activated, so that the freshness of the water 101 can be preserved.

[0055] It is safe because even if a person touches the discharge part 6 in the water, there will be no electric shock. This is because, as shown in Figure 1, the underwater electric potential generator 1 is insulated by a double transformer connecting a first transformer T1 and a second transformer T2, and is configured to prevent overcurrent by having an overcurrent protection circuit 5. For this reason, the underwater electric potential generator 1 can be used safely in any location.

[0056] In the underwater electric potential generating device 1 of the present invention, the aerial antenna 7 is placed in the air and an AC electric field is formed around it. Therefore, the AC electric field around the aerial antenna 7 can also be utilized. In other words, the underwater electric potential generating device 1 may be used as an air potential generating device. For example, if fresh produce is placed in the air AC electric field formed by the aerial antenna 7, the cells of the fresh produce can be activated, so that the freshness of the fresh produce can be maintained for a long period of time. In this case, the underwater electric potential generating device 1 of the present invention can also be used as a fresh produce freshness preservation device. Here, the fresh produce includes food ingredients such as fruits and vegetables, fresh fish, and meat.

[0057] The use of the AC electric field in the air formed by the aerial antenna 7 is not limited to the fresh product freshness preservation device and may be any form. The AC electric field formed in the air by the aerial antenna 7 may be used while the AC electric field formed in the water by the discharge unit 6 of the underwater electric potential generating device 1 is used, or only the AC electric field formed in the air by the aerial antenna 7 may be used without using the AC electric field formed in the water by the discharge unit 6. EXAMPLES

[0058] Next, the present disclosure will be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0059] We produced the underwater electric potential generator 1 shown in Figure 1. The underwater electric potential generator 1 was housed in a resin case (main body), and the aerial antenna 7 was formed into a linear shape and attached to the inner wall of the top plate inside the case. The discharge part 6 was formed from a plate-shaped conductive plate and connected to the main body of the underwater electric potential generator 1 with an electric wire. A 60 Hz sine wave was generated from the sine wave generating circuit 2.

[0060] Here is an example of using the underwater electric potential generator 1 that we created. The electric potential was measured using an electromagnetic field radiation tester (manufacturer: ERICKHILL, model name: ER02).

[0061] Figure 3 shows a photograph of a kitchen sink (the tank part of the sink) filled to 90% with water, with the plate-shaped discharge unit 6 submerged at the bottom of the sink. The sink is not earthed. This example is based on the assumption that the tank will be filled with water. The underwater electric potential generator 1 was placed on the edge of the sink containing the discharge unit 6. With the underwater electric potential generator 1 turned on, a voltage of 237 V / m was output to the water, as shown in the photograph. With the underwater electric potential generator 1 turned off, the voltage of the water was 6 V / m. It is thought that the reason it did not become 0 V / m when it was turned off is due to the influence of noise in the air.

[0062] Figure 4 shows a photograph of tap water being poured from a faucet into a sink (earthed). The sink is earthed. The tap water coming out of the faucet is considered to be earthed. This example is based on the assumption that the discharge unit 6 is placed in the flow of a river. The underwater electric potential generator 1 is set up in the same way as in Figure 3. When the underwater electric potential generator 1 is turned on, the voltage of the water, which is considered to be the same as the flow of a river, is 210 V / m. As shown in the photograph, when the left hand is placed in the water and the water passes through the human body, the voltage on the right hand is 210 V / m, the same as the voltage of the water. In this state, if the right hand is brought into contact with a metal part that is earthed, the overcurrent protection circuit 5 operates and the person is not electrocuted. When the underwater electric potential generator 1 is turned off, the voltage of the water is 5 V / m. It is considered that the reason that the voltage of the water is not 0 V / m when the power is turned off is due to the influence of noise in the air.

[0063] Figure 5 shows a photograph of the state in which an oscilloscope probe is inserted into the water in the sink in the state shown in Figure 4 to observe the waveform of the AC electric field in the water. It can be seen that a sine wave AC electric field with a frequency of 60 Hz is formed in the water, even though the water is earthed.

[0064] FIG. 6 shows a photograph of the state in which the discharge unit 6 was placed in an aquarium and fish were raised. This is an example of using the underwater potential generating device 1 as a "growth promotion device for aquatic organisms" and a "water freshness preservation device". The underwater potential generating device 1 was placed outside the water immediately next to the aquarium (within about 100 mm). The discharge unit 6 was placed at the bottom of the aquarium. The underwater potential generating device 1 was operated to raise fish (grass carp) for nine days from May 22 to May 31, 2024. (a) in the same figure shows the state on May 22, 2024, and (b) in the same figure shows the state on May 31, 2024. The water voltage was 403 V / m. Compared to when the device of the present invention was not used, the growth rate of the fish was 1.5 times or more. In addition, although the water in the aquarium was not replaced, there was no algae growth, dirt, or odor even after nine days compared to when the device of the present invention was not used, and there was no decrease in the freshness of the water.

[0065] Figure 7 shows a photograph of the state in which the discharge unit 6 was placed in the water of a pond and the underwater electric potential generator 1 was operating. The pond is a reservoir in Myoko City, Niigata Prefecture. The underwater electric potential generator 1 was placed on land within 2 m from the water surface directly above where the discharge unit 6 was placed. As shown in the figure, a voltage (AC electric field) of 17 V / m was able to be generated in the water of the pond.

[0066] Figure 8 shows a photograph of the underwater electric potential generator 1 in operation with the discharge unit 6 placed in the sea. The underwater electric potential generator 1 was placed in the air within 2 m of the seawater surface directly above the discharge unit 6. As shown in the figure, a voltage (AC electric field) of 19 V / m was able to be generated in the seawater. [Explanation of symbols]

[0067] Reference numeral 1 is an underwater potential generator, 2 is a sine wave generating circuit, 3 is an intensity adjustment circuit, 4 is a feedback circuit, 5 is an overcurrent protection circuit, 6 is a discharge unit, 7 is an aerial antenna, 11 is a power supply unit, 12 is a power supply connector, 21 is an amplifier circuit, 22 is a variable resistor, 23 is an amplifier circuit, 24 is a push-pull circuit, 31 is a first primary coil, 32 is a first secondary coil, 33 is a second primary coil, 34 is a second secondary coil, 101 is water, 102 is earth, 111 is fish, T1 is a first transformer, and T2 is a second transformer.

Claims

1. An underwater electric potential generating device that generates an AC electric field around a discharge unit disposed underwater, a sine wave generating circuit for generating a sine wave signal; an intensity adjustment circuit for adjusting the intensity of the sine wave signal generated by the sine wave generation circuit; a first transformer having a first primary coil to which the sine wave signal whose intensity has been adjusted by the intensity adjustment circuit is input and a first secondary coil magnetically coupled to the first primary coil; a second transformer having a second primary coil connected to the first secondary coil of the first transformer and a second secondary coil magnetically coupled to the second primary coil; a feedback circuit that returns an output of one terminal of the second secondary coil to one terminal of the second primary coil to adjust an output voltage at a second secondary coil of the second transformer; an air antenna for radiating a portion of an output from one terminal of the second secondary coil into the air; an overcurrent protection circuit for preventing an overcurrent from being output from the other terminal of the second secondary coil; and the discharge unit is connected to the other terminal of the second secondary coil via the overcurrent protection circuit.

2. 2. The underwater electric potential generating device according to claim 1, wherein the sine wave generating circuit generates the sine wave signal at a frequency of 55 to 60 Hz.

3. 2. The underwater electric potential generating device according to claim 1, wherein a voltage of 5 to 650 V is applied to the discharge section when expressed as the maximum value of the waveform (1 / 2 the peak-to-peak value).

4. An underwater electric potential generating device as described in claim 1, characterized in that a current of 0.01 to 0.1 mA flows through the second secondary coil when expressed as the maximum value of the waveform (1 / 2 the peak-to-peak value).

5. 2. The underwater electric potential generating device according to claim 1, wherein the discharge unit is disposed within a depth range of 2 m from the water surface.

6. 2. The underwater electric potential generating device according to claim 1, characterized in that a voltage of 5 to 300 V is applied to the aerial antenna when expressed as the maximum value of the waveform (1 / 2 the peak-to-peak value).

7. 2. The underwater electric potential generating device according to claim 1, wherein the aerial antenna is placed outside the water within a distance of 5 m from the water surface directly above the discharge unit placed underwater.

8. A growth promotion device for aquatic organisms using the underwater electric potential generating device according to any one of claims 1 to 7, The device for promoting the growth of aquatic organisms is characterized in that the discharge unit is placed in water in which the aquatic organisms are kept.

9. A water freshness preservation device using the underwater electric potential generating device according to any one of claims 1 to 7, A water freshness preservation device, characterized in that the discharge unit is placed in water whose freshness needs to be preserved.

10. An atmospheric electric potential generating device using the underwater electric potential generating device according to any one of claims 1 to 7, An air potential generating device, characterized in that the air antenna is placed in the air and generates an AC electric field around it.

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