Underwater potential generation device, growth promotion device for aquatic organisms, water freshness preservation device, and air potential generation device

Abstract

To provide an underwater potential generator capable of forming an AC electric field in the water of an arbitrary place 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 danger of an electric shock even if a discharge part is not insulated, an underwater organism growth promoting device utilizing the same, a water freshness holding device and an aerial potential generator.SOLUTION: The underwater potential generation device 1 forms an AC electric field around a discharge unit 6 disposed in water, and includes a sinusoidal wave generation circuit 2 that generates a sinusoidal wave signal, an intensity adjustment circuit 3 thereof, 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 end of the second secondary coil via the overcurrent protection circuit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an underwater potential generating device capable of safely generating 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 potential generating device that utilizes the same. [Background technology]

[0002] Patent Document 1 describes a water activation device and aquaculture device that creates 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 into which the electrode unit is placed must be stored in an aquarium. Furthermore, as described in paragraph 0219 of Patent Document 1, in this water activation device and aquaculture device, 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 generator described in Patent Document 1 has the problem that it requires water to be placed in a tank, and cannot be used in water other than tanks such as ponds, lakes, rivers, the sea, etc. Another problem is 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 generator that can form an AC electric field in water of any location, not limited to the water in an aquarium, such as a pond, lake, river, or ocean, 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 atmospheric electric potential generator that utilize the same. [Means for solving the problem]

[0006] The underwater electric potential generating device described in claim 1 of the claims, which has been made to achieve the above object, is an underwater electric potential generating device that generates an AC electric field around a discharge unit placed underwater, and includes a sine wave generating circuit that generates a sine wave signal, an intensity adjusting circuit that adjusts 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 that returns the 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 that radiates a portion of the output of one terminal of the second secondary coil into the air, an overcurrent protection circuit that prevents an overcurrent from being output from the other terminal of the second secondary coil, and the discharge unit that is 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 according to claim 3 is the device according to claim 1, characterized in that a voltage of 5 to 650 V is applied to the discharge part when expressed as a maximum value of the waveform.

[0009] The underwater electric potential generating device described in claim 4 is the one 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.

[0010] The underwater electric potential generating device described in claim 5 is the device described in claim 1, characterized in that the discharge unit is placed within a depth range 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, 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.

[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 placed 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 potential generating device described in claims 1 to 7, and is 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 using the underwater potential generating device described in claims 1 to 7, characterized in that the discharge unit is placed in water that needs to be kept fresh.

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

[0016] According to the underwater electric potential generator 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 an underwater discharge unit via an intensity adjustment circuit, a first transformer, and a second transformer. This creates a specific AC electric field around the aerial antenna in the air, and this specific AC electric field acts on the water, and a specific AC voltage is applied to the underwater discharge unit. This interaction allows a stable AC electric field of sufficient strength to be created in water not limited to an aquarium, but in any location, such as a pond, lake, river, or ocean. Furthermore, according to the underwater electric potential generator 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 unit is not insulated, making it safe to use.

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

[0018] An AC electric field of sufficient strength and stability can be formed in the water when a voltage of 5 to 650 V is applied to the discharge unit when expressed at the maximum value of the waveform, when a current of 0.01 to 0.1 mA flows through the second secondary coil when expressed at the maximum value of the waveform, when the discharge unit 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 expressed at 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 unit 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 where 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 and the discharge part is 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 airborne antenna of the underwater electric potential generating device of the present invention, this AC electric field in the air can be utilized to generate an airborne electric potential. [Brief explanation 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. [Figure 2] 1 is a schematic diagram showing the use of an underwater electric potential generating device according to the present invention. [Figure 3] This is a photograph showing the underwater potential generator we created being used in a sink (without earth). [Figure 4] This is a photograph showing the underwater potential generator we created being used in a sink (earthed). [Figure 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 being operated in a pond and an AC electric field formed in the pond is being measured. [Figure 8] This is a photograph showing the underwater electric potential generating device that was manufactured operating in the ocean and measuring the AC electric field formed in the ocean. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, 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 drawing, the same components as those described above with reference to the previous drawings will be designated by the same reference numerals, and detailed descriptions may be omitted as appropriate. Furthermore, when a range is indicated as A to B in this specification and claims, this means A or more and B or less, unless otherwise specified.

[0024] Figure 1 shows the configuration of an underwater electric potential generator 1 to which the present invention is applied. The underwater electric potential generator 1 generates 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 discovered by the inventors as a result of extensive research.

[0026] The sine wave generating circuit 2 can be any 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. Commercially available semiconductor integrated circuits and sine wave oscillator units may also be used. The figure shows an example of a circuit using a commercially available IC capable of generating a sine wave. It is preferable that the sine wave generating circuit 2 be capable of setting a high sine wave frequency accuracy, with small frequency fluctuations, little waveform distortion, and small amplitude fluctuations. Therefore, it is preferable that the sine wave generating circuit 2 be a circuit that operates based on the oscillation signal of a crystal oscillator (crystal resonator) to generate a sine wave signal, such as one that generates an operating clock from the oscillation signal of a crystal oscillator (crystal oscillator) or one that divides the oscillation frequency of a crystal oscillator and uses it.

[0027] The sine wave generating circuit 2 is connected to an intensity adjusting circuit 3. The sine wave signal generated by the sine wave generating circuit 2 is input to the intensity adjusting circuit 3, which adjusts the intensity of the sine wave signal. The intensity adjusting circuit 3 can be any known circuit that can adjust the intensity of the sine wave signal, such as the voltage intensity or current intensity. One example of the intensity adjusting circuit 3 is an amplifier circuit. The same figure shows, as one example, an example in which the intensity adjusting circuit 3 is configured with 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 that 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 that 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, i.e., 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 serves as a reference for the circuit voltage) within 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 that 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 to any particular circuit as long as it is capable of adjusting (setting) the feedback voltage, and any known circuit can be used. The feedback circuit 4 is, 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 radiates a portion of the output from 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 composed of any known voltage adjustment circuit, such as an impedance element having an impedance such as a resistor or 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, curve, or ring. If the aerial antenna 7 is plate- or sheet-shaped, it may have one or more openings. The aerial antenna 7 preferably has a shape that can efficiently radiate an electric field of the sinusoidal signal frequency into the air. The aerial antenna 7 may be disposed inside the housing (not shown) of the underwater electric potential generation device 1, or may be disposed inside, on the inner or outer surface of the top, bottom, or side panel of the housing, or may be disposed outside the housing via an electric wire (cable) of any length connected to the housing (device circuit).

[0036] The overcurrent protection circuit 5 is intended to prevent 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. The sine wave signal generated by the sine wave generating circuit 2 is applied to the discharge unit 6 after its level has been appropriately adjusted by each circuit up to the previous stage.

[0037] The overcurrent protection circuit 5 is not limited to any particular circuit, and any known circuit can be used as long as it can prevent excessive current from flowing to prevent electric shock. Examples of the overcurrent protection circuit 5 include an impedance element having impedance, such as a resistor or capacitor, a thermistor, a fuse, or a resettable fuse. The overcurrent protection circuit 5 is configured to prevent currents exceeding a predetermined, normally expected current value from flowing. Alternatively, the overcurrent protection circuit 5 may be a known circuit that includes a current detection unit and a cutoff unit, and in which the cutoff unit immediately cuts off the current output line when the current detection unit detects an overcurrent.

[0038] The discharge unit 6 is made of a conductive metal and is formed in any shape, such as a plate, sheet, rod, straight line, curve, or ring. If the discharge unit 6 is plate- or sheet-shaped, it may have one or more openings. The discharge unit 6 is preferably shaped so that it can efficiently radiate an electric field of the sinusoidal signal frequency 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 the water. The discharge unit 6 may be insulated by being covered with an insulating member.

[0039] The underwater electric potential generation device 1 is configured, for example, to operate by receiving a supply of DC power (DC voltage) from an external DC power source (not shown). As shown in the figure, the underwater electric potential generation device 1 is equipped with a power supply 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 generation device 1 may also be equipped with a primary or secondary battery for supplying DC power for operation. Note that, although it is preferable for the underwater electric potential generation device 1 to operate by receiving an external supply of DC power because this increases safety, it may also be equipped with an internal AC-DC (AC-DC) converter so that it can operate by receiving an external supply of commercial AC power (e.g., AC 100 V power 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 within 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 be able to convert DC power input from outside and generate positive and negative DC power that serves as a power source for operating the intensity adjustment circuit 3. The power supply unit 11 can use a known voltage converter circuit (DC-DC conversion circuit) that can generate positive and negative DC power.

[0042] The ground electrode within the underwater electric potential generation 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, expressed as the maximum value of the waveform (half the peak-to-peak value), is applied to the discharge unit 6. The second secondary coil of the second transformer T2 is preferably configured so that a current of 0.01 to 0.1 mA, expressed as the maximum value of the waveform (half the peak-to-peak value), flows. The aerial antenna 7 is preferably configured so that a voltage of 5 to 300 V, expressed as the maximum value of the waveform (half the peak-to-peak value), is applied.

[0044] To achieve 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 winding ratio of the first transformer T1, the winding 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. Alternatively, the water 101 may 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, a fish tank, or bathtub. The quality of the water 101 is not limited, and any quality of water may be used, such as fresh water, salt water, seawater, electrolyzed water, or muddy water.

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

[0048] Through extensive research, the inventors of the present application have discovered that by providing an underwater electric potential generator 1 with a discharge unit 6 and an aerial antenna 7 and applying the above-mentioned specific AC voltage to each, 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 generator 1 of the present invention, a specific AC electric field is formed around the aerial antenna 7 in the air. It is presumed that this specific AC electric field in the air acts on the water 101, and that the interaction between the application of the specific AC voltage to the discharge unit 6 in the water 101 and the AC electric field is formed around 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 short 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. For example, when the voltage is in the preferred range described above (e.g., 5 to 650 V to the discharge unit 6), the effective range 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 (the depth at the lowest position 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. Furthermore, while it depends on the voltage applied to the aerial antenna 7, when the voltage is in the preferred range described above (e.g., 5 to 300 V to the aerial antenna 7), the aerial antenna 7 (the furthest part of the aerial antenna 7) 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 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 aquatic organisms. As shown in the figure, the discharge unit 6 of the underwater electric potential generator 1 is placed in water in which an aquatic organism 111 is kept. The figure shows an example in which the aquatic organism 111 is a fish. As mentioned 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, it is preferable that the breeding range containing the water 101 be large enough to be within the effective range of the AC electric field, but 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 aquatic organism 111 is kept may be large.

[0051] Furthermore, by using a plurality of underwater electric potential generation 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. Furthermore, a plurality of underwater electric potential generation devices 1 may be housed in a single (single) housing, that is, a single underwater electric potential generation device 1 may be configured to have a plurality of discharge units 6 and a plurality of 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. Note that 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, thereby promoting the growth of the aquatic organisms 111. Furthermore, the AC electric field is applied directly to the aquatic organisms 111, which activates the cells of the aquatic organisms 111, thereby 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, the water 101 to which an AC electric field is applied is activated, thereby preserving the freshness of the water 101.

[0055] It is safe because even if a person touches the discharge part 6 underwater, they will not receive an 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 with an overcurrent protection circuit 5 to prevent overcurrent from flowing. For this reason, the underwater electric potential generator 1 can be used safely in any location.

[0056] In the underwater electric potential generator 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 generator 1 can be used as an airborne electric potential generator. For example, if fresh produce is placed in the airborne AC electric field formed by the aerial antenna 7, the cells of the fresh produce can be activated, and the freshness of the fresh produce can be maintained for a long period of time. In this case, the underwater electric potential generator 1 of the present invention can also be used as a fresh produce freshness preservation device. Here, 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 can be any form. Note that 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 generator 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. [Example]

[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] The underwater electric potential generator 1 shown in Figure 1 was manufactured. The underwater electric potential generator 1 was housed in a resin housing (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 housing. 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 by 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 potential generator 1 that we created. The potential was measured using an electromagnetic field radiation tester, model ER02, manufactured by ERICKHILL.

[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 was carried out assuming use with water in the tank. The underwater electric potential generator 1 was placed on the edge of the sink with the discharge unit 6 inside. With the underwater electric potential generator 1 powered on, a voltage of 237 V / m was output to the water, as shown in the photograph. When the underwater electric potential generator 1 was powered off, the water voltage was 6 V / m. The reason that it did not reach 0 V / m when turned off is thought to be due to the influence of noise in the air.

[0062] Figure 4 shows a photograph of tap water being poured into a sink (earthed). The sink is earthed. The tap water coming out of the faucet is considered to be grounded. This example was conducted assuming the discharge unit 6 was placed in a flowing river. The underwater potential generator 1 was set up the same way as in Figure 3. When the underwater potential generator 1 was turned on, the voltage of the water, considered to be the same as that of a flowing river, was 210 V / m. As shown in the photograph, when the left hand was placed in the water and the water passed over the body, the voltage on the right hand was 210 V / m, the same as the water voltage. In this state, if the right hand were to touch a metal part that was earthed, the overcurrent protection circuit 5 would operate and the person would not be electrocuted. When the underwater potential generator 1 was turned off, the water voltage was 5 V / m. The reason it did not reach 0 V / m when turned off is thought to be due to 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] Figure 6 shows a photograph of a fish being raised in an aquarium with the discharge unit 6 placed inside. This is an example of using the underwater electric potential generator 1 as a "growth promotion device for aquatic organisms" and a "water freshness preservation device." The underwater electric potential generator 1 was placed outside the water immediately next to the aquarium (within approximately 100 mm). The discharge unit 6 was placed at the bottom of the aquarium. The underwater electric potential generator 1 was operated, and fish (grass carp) were raised for nine days from May 22 to May 31, 2024. Figure 6(a) shows the state on May 22, 2024, and Figure 6(b) shows the state on May 31, 2024. The water voltage was 403 V / m. The fish growth rate was more than 1.5 times faster than when the device of the present invention was not used. Although the water in the aquarium was not changed, there was no algae growth, dirt, or odor, even after nine days, compared to when the device of the present invention was not used. There was no decrease in the freshness of the water.

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

[0066] Figure 8 shows a photograph of the underwater electric potential generator 1 operating 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 sea 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] 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 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 in water, 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 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 from 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 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 a maximum value of the waveform.

4. 2. The underwater electric potential generating device according to claim 1, wherein a current of 0.01 to 0.1 mA, expressed as a maximum value of the waveform, flows through the second secondary coil.

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, wherein a voltage of 5 to 300 V is applied to the airborne antenna when expressed as a maximum value of the waveform.

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 that needs to be kept fresh.

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

Images