Apparatus for generating water negative ions by vibration and method for generating water negative ions

Abstract

A device for generating water negative ions by vibration and a method for generating water negative ions, comprising a vibration mechanism and a water storage container, the vibration mechanism comprising a vibration plate and a power module, wherein the vibration plate is electrically connected to the power module, wherein the vibration plate is in contact with water in the water storage container to vibrate when the power module increases voltage to make the water in contact with the vibration plate vibrate and rub with the vibration plate at high frequency to generate water negative ions, thereby naturally generating water negative ions beneficial to human health in a manner simulating the impact of a waterfall on the ground to generate water negative ions.

Description

Technical Field

[0001] This invention relates to a negative ion generating machine, and more particularly to a device and method for generating negative water ions by vibration. Background Technology

[0002] Negative ions have air purification effects, such as dust removal and sterilization, and also have medical and health benefits, such as improving people's sleep, preventing systemic diseases, enhancing the body's immunity, and playing a positive role in the recovery of cardiovascular and cerebrovascular diseases. For example, they can enhance the brain's oxidation function, allowing the brain to obtain more oxygen, lowering blood pressure, improving heart function, improving myocardial nutrition, prolonging clotting time, increasing blood oxygen content, and facilitating the transport, absorption, and utilization of blood oxygen.

[0003] Existing negative ion generators typically generate negative ions by ionizing air with high voltage. For example, a pulse oscillation circuit in the negative ion generator boosts a low voltage to a DC negative high voltage through a high-voltage module. This DC negative high corona discharge is continuously generated at the tip of a carbon fiber, rapidly emitting a large number of electrons. These electrons cannot remain in the air for long and are immediately captured by oxygen molecules (O2) in the air, thus forming negative ions. To obtain a high concentration of negative ions, a relatively high voltage is required. However, extremely high voltage can generate static electricity and ozone, which is detrimental to human health. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a device for generating negative water ions through vibration, comprising:

[0005] A vibration mechanism comprising a vibrating plate and a power module, wherein the vibrating plate is electrically connected to the power module; and

[0006] A water storage container, wherein the vibrating plate contacts water in the water storage container to vibrate when the power module increases the voltage, causing the water in contact with the vibrating plate to vibrate and rub against the vibrating plate to generate negative water ions.

[0007] Preferably, the vibrating plate includes a piezoelectric ceramic layer and a conductive material layer located on the piezoelectric ceramic layer, wherein the conductive material layer has micropores.

[0008] Preferably, the working area in the center of the conductive material layer has the micropores, and the piezoelectric ceramic layer is stacked on the outer periphery around the working area of ​​the conductive material layer.

[0009] Preferably, the conductive layer is made of a material that loses charge more easily than a water droplet.

[0010] Preferably, the conductive material layer is formed of a metal alloy such as a stainless steel sheet.

[0011] Preferably, the conductive material layer includes a base layer and a dielectric triboelectric material layer located on the base layer, wherein the dielectric triboelectric material layer is located on the side in contact with water and is more likely to lose charge and become positively charged relative to the water droplet and the base layer.

[0012] Preferably, the dielectric triboelectric material layer is a polyimide film or a polyamide film.

[0013] Preferably, the pore size of the micropore is less than 10 micrometers. More preferably, the pore size of the micropore is less than 5 micrometers.

[0014] Preferably, the vibrating plate is loaded with a frequency of 3K-5MHZ and a peak voltage of 60-90V.

[0015] Preferably, the vibration mechanism further includes an elastic water-absorbing element, which includes a water-absorbing end and a contact end, wherein the water-absorbing end is adapted to be placed in the water in the water storage container, and the contact end is adapted to strike the contact end when the vibrating plate vibrates.

[0016] The present invention also provides a method for generating negative water ions, comprising the steps of: contacting water stored in the water storage container with a conductive material layer having micropores and being driven to vibrate at high frequency to generate tiny water droplets, and the tiny water droplets rubbing against the conductive material layer at high frequency to obtain negative charges and generate negative water ions.

[0017] Preferably, the conductive material layer is driven to vibrate at high frequency by applying a voltage to the piezoelectric ceramic layer and the conductive material layer. The frequency of the voltage applied to the piezoelectric ceramic layer and the conductive material layer is 3K-5MHZ, and the peak value is 60-90V.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) Vibration is generated by the vibration mechanism to make the water resonate and generate negative ions, so as to naturally generate water negative ions that are beneficial to human health in a way that simulates the water negative ions generated by the waterfall hitting the ground.

[0020] (2) The water is vibrated at high frequency by the vibration mechanism to generate tiny water droplets. At the same time as the tiny droplets are generated, the vibrating plate rubs against the tiny water droplets, so that the water molecules accumulate negative charges during the friction process to generate negative ions efficiently.

[0021] (3) The vibrating plate is more likely to lose charge and become positively charged than water droplets, thus making it easier for tiny water droplets to become negatively charged and generate water negative ions.

[0022] (4) The vibrating plate has micropores with extremely small apertures to control the size of tiny water droplets.

[0023] (5) High concentrations of water negative ions are generated through high-frequency vibration and friction, such as H+ negative water molecule clusters [H3O2-(H2O)n], HO- negative water molecule clusters OH-(H2O)n, negative water molecules -(H2O)n, etc. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a device for generating negative water ions by vibration, according to a preferred embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the vibrating plate of the preferred embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of a modified embodiment of the vibrating plate of the preferred embodiment of the present invention.

[0027] Figure 4 This is a three-dimensional schematic diagram of a device for generating negative water ions by vibration, according to another preferred embodiment of the present invention.

[0028] Figure 5 This is a block diagram of the device for generating negative water ions by vibration, which is a preferred embodiment of the present invention. Detailed Implementation

[0029] The terms and words used in the following description are not limited to their literal meanings, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

[0030] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0032] like Figures 1 to 2The image shows a preferred embodiment of the device for generating negative water ions by vibration, which includes a vibration mechanism 10 and a water storage container 20, wherein the water storage container 20 is used to store liquid water, and the vibration mechanism 10 is used to generate negative water ions by vibrating the water stored in the water storage container 20 near the vibration mechanism 10.

[0033] The water used to generate negative water ions can be any suitable water, such as drinking purified water, drinking conductive negative ion liquid, and drinking mineral water. The vibration mechanism 10 is installed on the water storage container 20 and can contact and act on the water stored in the water storage container 20 to generate negative water ions.

[0034] More specifically, the vibration mechanism 10 includes a vibrating plate 11 and a power supply 12. The vibrating plate 11 includes a conductive material layer 111 and a piezoelectric ceramic layer 112 stacked on the conductive material layer 111. The piezoelectric ceramic layer 112 and the conductive material 111 are electrically connected to the positive and negative terminals of the power supply 12 and start or stop working under corresponding drive signals. The conductive material layer 111 is in contact with water in the water storage container 20 and has multiple micropores 113. When a voltage of predetermined frequency and peak value is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111, the conductive material layer 111 will generate high-frequency vibration and strike the water near the conductive material layer 111, thereby causing the water to resonate and generate tiny water droplets. At the same time as the tiny water droplets are generated, they rub against the conductive material layer 111 at high frequency, thereby causing the tiny water droplets to further acquire negative charges and form water negative ions, which diffuse from the micropores 113 into the environment.

[0035] In this invention, to generate negative water ions, the vibration mechanism 10 simultaneously performs two processes: the generation of tiny water droplets and the process of making the tiny water droplets negatively charged. Specifically, when the vibrating plate 11 of the vibration mechanism 10 vibrates at a high frequency, water molecules are driven to resonate at the same frequency and vaporize, thereby generating tiny water droplets. At the same time, the generated tiny water droplets rub against the high-frequency vibrating conductive material layer 111, thereby causing the conductive material layer 111 to lose its charge and the tiny water droplets to gain a charge. In this way, the vaporized tiny water droplets that have gained a charge form negative water ions such as H+ negative water molecule clusters [H3O2-(H2O)n], HO- negative water molecule clusters OH-(H2O)n, negative water molecules -(H2O)n, etc.

[0036] The conductive material layer 111 has a working area 1111 and an outer periphery 1112 surrounding the working area 111. The piezoelectric ceramic layer 112 is annular and overlaps the outer periphery 1112 of the conductive material layer 111. The portion of the conductive material layer 111 that is not overlapped with the piezoelectric ceramic layer 112 forms the working area 1111. The micropores 113 are formed in the working area 1111 of the conductive material layer 111.

[0037] The water stored in the water storage container 20 has relatively weak conductivity, while the conductive material layer 111 has relatively strong conductivity. As a result, the conductive material layer 111 is more likely to lose charge, making it easier for the vaporized tiny water droplets to carry charge and form negative water ions.

[0038] In order to make it easier for tiny water droplets to carry an electric charge and generate negative water ions, the size of the micropores 113 disposed in the conductive material layer 111 is as small as possible and the number is as large as possible, so that the vibration speed of the tiny water droplets is faster, and the friction between the mesh structure of the conductive material layer 111 and the tiny droplets is greater, so that the tiny water droplets are more likely to carry a negative charge.

[0039] Furthermore, the amount of negative water ions generated by tiny water droplets is positively correlated with the negative charge density. The negative charge density depends on the contact time with the conductive material layer 111, the contact area, and the charge density of the conductive material layer 111. Therefore, the smaller the size of the tiny water droplets, the higher their average charge density, and thus the higher the amount of negative water ions generated. In other words, water droplets with smaller diameters are more likely to generate negative water ions, and the concentration of negative water ions is higher.

[0040] Therefore, in this invention, the size of the micropore 113 is less than 10 micrometers, preferably with an opening size of less than 5 micrometers. The size of the micropore 113 is correspondingly used to control the size of the tiny droplets generated by the vibration mechanism 10. In this invention, the size of the tiny water droplets generated by the vibration mechanism 10 does not exceed 20 micrometers, thereby causing the tiny water droplets to become charged and generate negative water ions during the high-frequency vibration friction between the tiny water droplets and the conductive material layer 111 of the mesh structure.

[0041] The conductive material layer 111, which comes into contact with the water stored in the water storage container 20 and is used to generate negative water ions, needs to have both conductive and frictional properties as well as corrosion resistance. For example, the conductive material layer 111 can be a metal alloy, such as a stainless steel sheet, which forms micropores 113 by perforation, thereby creating a mesh-like structure for contacting and vibrating the water and rubbing against it. In a specific example, the conductive material layer 111 is, for instance, a 316L stainless steel sheet, which is more likely to lose charge and become positively charged than water droplets.

[0042] like Figure 3 As shown, in another modified embodiment, the conductive material layer 111 includes a base layer 1113 and a dielectric triboelectric material layer 1114 coated or attached to the water-adjacent side of the base layer 1113. Preferably, the entire base layer 1113 is coated with the dielectric triboelectric material layer 1114, and the inner wall material of the micropore 113 is also the dielectric triboelectric material layer 1114.

[0043] The dielectric triboelectric material layer 1114 readily loses electrons and becomes positively charged relative to the substrate layer 1113, which correspondingly readily becomes negatively charged. For example, if the substrate layer 1113 is a 316L stainless steel layer, and the dielectric triboelectric material layer 1114 is a polyimide film or a polyamide such as polyamide (nylon)-11, then the substrate layer 1113, which is implemented as a 316L stainless steel layer, readily becomes negatively charged, while the dielectric triboelectric material layer 1114 readily loses electrons and becomes positively charged. Thus, when the vibrating plate 11 of the vibration mechanism 10 vibrates at high frequency, tiny water droplets interact with the dielectric triboelectric material layer 1114 and readily become negatively charged, thereby forming water negative ions.

[0044] It is worth mentioning that, in order to ensure that the water in contact with the conductive material layer 111 can resonate to generate tiny water droplets, and to enable the tiny water droplets to undergo sufficient high-frequency friction with the conductive material layer 111, the voltage applied to the piezoelectric ceramic layer 112 needs to drive the conductive material layer 111 to vibrate at a high frequency. Experimental data shows that when a voltage with a frequency of 3K-5MHZ and a peak value of 60-90V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111, the conductive material layer 111 can vibrate at a high frequency and generate a high concentration of negative water ions, and the negative water ions migrate a long distance.

[0045] In addition, the water stored in the water storage container 20 can also be subjected to a certain amount of hydraulic pressure through a pressurizing device, so that when the water comes into contact with and is acted upon by the conductive material layer 111, it is easier to resonate and vaporize, and the friction between the water and the conductive material layer 111 is enhanced.

[0046] like Figure 4As shown, according to another preferred embodiment of the present invention, a device for generating negative water ions by vibration includes a vibration mechanism 10 and a water storage container 20. The vibration mechanism 10 includes a vibrating plate 11 and a power supply 12. The vibrating plate 11 includes a conductive material layer 111 and a piezoelectric ceramic layer 112 stacked on the conductive material layer 111, wherein the piezoelectric ceramic layer 112 and the conductive material layer 111 are electrically connected to the positive and negative terminals of the power supply 12. The conductive material layer 111 is capable of contacting water in the water storage container 20 and has a plurality of micropores 113 in its working area 1111. When a voltage of a predetermined frequency and peak value is applied to the two piezoelectric ceramic layers 112, the conductive material layer 111 generates high-frequency vibration and strikes the water near the conductive material layer 111, thereby causing the water to resonate and generate tiny water droplets. At the same time as the tiny water droplets are generated, they rub against the conductive material layer 111 at a high frequency, thereby causing the tiny water droplets to further acquire a negative charge and form negative water ions, which diffuse from the micropores 113 into the environment.

[0047] In this embodiment, the vibration mechanism 10 further includes an elastic water-absorbing element 13, which has a water-absorbing end 131 and a contact end 132. The water-absorbing end 131 is located in the water storage container 20 and is adapted to be submerged in water. The contact end 132 is adapted to be above the water surface in the water storage container 20 during operation. The elastic water-absorbing element 13 attracts water to the contact end 132 by siphoning. During high-frequency vibration, the conductive material layer 111 impacts the contact end 132 of the elastic water-absorbing element 13, causing the water at the contact end 132 to resonate, generating tiny water droplets and further generating negative water ions through friction. Furthermore, the elastic water-absorbing element 13 can further buffer noise caused by friction, such as by using a cotton swab to reduce noise.

[0048] In this embodiment, multiple vibrating plates 11 can be disposed on the top side of the water storage container 20, thereby allowing negative ions to diffuse upwards. In the first embodiment described above, the multiple vibrating plates 11 can be disposed on the periphery of the water storage container 20, thereby allowing the generated negative water ions to diffuse outwards.

[0049] It is understood that the present invention provides a method for preparing a device that generates negative water ions through vibration, which includes the steps of configuring the water storage container 20 and assembling the vibration mechanism 10. The water storage container 20 is a container capable of storing water, such as a water storage box. The side of the box has one or more mounting holes 21. Preferably, the water storage container 20 has multiple mounting holes 21 for assembling multiple vibrating plates 11 of the vibration mechanism 10.

[0050] When assembling the vibration mechanism 10, a layer of the conductive material is perforated to form a conductive material layer 111 with micropores 113 in the central working area 1111. Then, the piezoelectric ceramic layer 112 is stacked on the outer periphery 1112 of the conductive material layer 111, and the conductive ceramic layer 112 and the conductive material layer 111 are electrically connected to the positive and negative terminals of the power supply 12, wherein the power supply 12 is adapted to be connected to a mains power supply to provide power.

[0051] Finally, the plurality of vibrating plates 11, each including the conductive material layer 111 and the piezoelectric ceramic layer 112, are respectively installed at the positions of the plurality of mounting holes 21 corresponding to the water storage container 20, thereby forming the device of the present invention that generates water negative ions by vibration.

[0052] Accordingly, when using the device for generating negative water ions by vibration, water such as purified drinking water, conductive negative ion liquid, and mineral water is placed into the water storage container 20, and the power supply 12 is energized to drive the vibrating plate 11 to vibrate so that it comes into contact with and interacts with the water stored in the water storage container 20, thereby generating negative water ions.

[0053] Correspondingly, the present invention provides a method for generating negative water ions, which involves the conductive material layer 111 having the micropores 113 contacting water stored in the water storage container and being driven to vibrate at high frequency to generate tiny water droplets, and the tiny water droplets rubbing against the conductive material layer 111 at high frequency to obtain negative charges and generate negative water ions.

[0054] Accordingly, the conductive material layer is driven to vibrate at high frequency by applying a voltage to the piezoelectric ceramic layer and the conductive material layer. Preferably, the frequency of the voltage applied to the piezoelectric ceramic layer 112 is 3K-5MHZ, and the peak value is 60-90V.

[0055] It is understood that the device for generating negative water ions through vibration described in this invention can naturally generate negative water ions by simulating the impact of a waterfall on the ground, that is, by generating negative water ions through high-frequency friction of water. The concentration of negative water ions around the waterfall is 10,000-50,000 / cm³. The device for generating negative water ions through vibration described in this invention allows negative ions to migrate up to 200cm, and the concentration of negative ions within a 200cm range can reach 30,000 / cm³. 3 above.

[0056] In a specific example, a voltage with a frequency of 5 kHz ± 2 kHz and a peak value of 70 V ± 10 V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111. The pore size of the micropore 113 is 5 micrometers, allowing negative ions to migrate up to 200 cm, and the concentration of negative ions within this 200 cm range can reach 30,000 to 40,000 per cm.3 Negative ions can migrate up to 400cm, and the concentration of negative ions within this range can reach 10,000 to 20,000 per cm. 3 .

[0057] In a specific example, a voltage with a frequency of 108 kHz ± 2 kHz and a peak value of 70 V ± 10 V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111. The pore size of the micropore 113 is 3 micrometers, allowing negative ions to migrate up to 200 cm, and the concentration of negative ions within this 200 cm range can reach 100,000 to 150,000 ions / cm². 3 Negative ions can migrate up to 400cm, and the concentration of negative ions within this range can reach 60,000 to 80,000 per cm. 3 .

[0058] In a specific example, a voltage with a frequency of 170kHz ± 2kHz and a peak value of 70V ± 10V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111. The pore size of the micropore 113 is 3 micrometers, allowing negative ions to migrate up to 200cm, and the concentration of negative ions within this 200cm range can reach 100,000 to 200,000 per cm³. 3 Negative ions can migrate up to 400cm, and the concentration of negative ions within this range can reach 80,000 to 150,000 per cm. 3 .

[0059] In a specific example, a voltage with a frequency of 1.7 MHz ± 2 kHz and a peak value of 70 V ± 10 V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111. The pore size of the micropore 113 is 3 micrometers, allowing negative ions to migrate up to 200 cm, and the concentration of negative ions within this 200 cm range can reach 100,000 to 200,000 per cm³. 3 Negative ions can migrate up to 400cm, and the concentration of negative ions within this range can reach 100,000 to 150,000 per cm. 3 .

[0060] In a specific example, a voltage with a frequency of 3MHz±2kHz and a peak value of 80V±10V is applied to the piezoelectric ceramic layer 112 and the conductive material layer 111. The pore size of the micropore 113 is 3 micrometers, allowing negative ions to migrate up to 200cm, and the concentration of negative ions within this 200cm range can reach 100,000 to 300,000 per cm³. 3 Negative ions can migrate up to 400cm, and the concentration of negative ions within this range can reach 100,000 to 200,000 per cm. 3 .

[0061] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not restrict this application from being implemented using the specific details described above.

[0062] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0063] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0064] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0065] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A device for generating negative water ions through vibration, characterized in that, include: A vibration mechanism, comprising a vibrating plate and a power module, wherein the vibrating plate is electrically connected to the power module; as well as A water storage container, wherein the vibrating plate is in contact with water in the water storage container to vibrate when the power module increases the voltage, so that the water in contact with the vibrating plate vibrates and rubs against the vibrating plate to generate negative water ions; The vibrating plate includes a piezoelectric ceramic layer and a conductive material layer located on the piezoelectric ceramic layer; The conductive material layer includes a base layer and a dielectric triboelectric material layer located on the base layer. The dielectric triboelectric material layer is located on the side in contact with water and is more likely to lose charge and become positively charged than the water droplet and the base layer. The dielectric triboelectric material layer is a polyimide film or a polyamide film.

2. The device for generating negative water ions by vibration according to claim 1, characterized in that, The conductive material layer has micropores.

3. The device for generating negative water ions by vibration according to claim 2, characterized in that, The working area in the center of the conductive material layer has the micropores, and the piezoelectric ceramic layer is stacked on the outer periphery around the working area of ​​the conductive material layer.

4. The device for generating negative water ions by vibration according to any one of claims 2 to 3, characterized in that, The pore size of the micropores is less than 10 micrometers.

5. The device for generating negative water ions by vibration according to any one of claims 2 to 3, characterized in that, The pore size of the micropore is less than 5 micrometers, and the frequency of the vibrating plate is 3K-5MHZ with a peak voltage of 60-90V.

6. The device for generating negative water ions by vibration according to any one of claims 1 to 3, characterized in that, The vibration mechanism further includes an elastic water-absorbing element, which includes a water-absorbing end and a contact end, wherein the water-absorbing end is adapted to be placed in the water of the water storage container and strikes the contact end when the vibrating plate vibrates.

7. A method for generating negative water ions, using the apparatus for generating negative water ions by vibration as described in any one of claims 1 to 3, characterized in that, The process includes the following steps: a conductive material layer with micropores comes into contact with water stored in the water storage container and is driven to vibrate at high frequency to generate tiny water droplets, and the tiny water droplets rub against the conductive material layer at high frequency to obtain negative charges and generate negative water ions.

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