A multi-faceted needle tip plasma negative oxygen ion generator

Abstract

The utility model relates to the field of corona generator discloses a kind of multi-faceted needle tip plasma negative oxygen ion generator, utilize the multi-faceted needle tip metal wire with multiple sharp needle is fixed in the front of ground plate, while connecting the direct current high voltage of high voltage module, and ground plate is by the copper foil layout of PCB board into multiple tip end, while being connected in the high voltage ground end of high voltage module, carry out high voltage discharge between multi-faceted needle tip metal wire and high voltage ground plate, air is sent into this device using fan again, so that air molecule ionizes into small particle size high concentration negative oxygen ion, and is sent into indoor space, in turn circulation, and then reach indoor air purification, deodorization, bacteriostasis and other effects.This kind of multi-faceted needle tip plasma negative oxygen ion generator has the advantages of low cost, small wind resistance, suitable for large area place.

Description

Technical Field

[0001] This utility model relates to the technical field of corona generators, and in particular to a multi-faceted needle tip plasma negative oxygen ion generator. Background Technology

[0002] In recent years, due to technological advancements and accelerated industrialization in various countries, the widespread use of electronic and electrical products and the overly enclosed nature of urban living spaces have severely disrupted the ion balance in the environment. Ions are charged atoms, atomic groups, or molecules; they are extremely small particles. There are two types of ions: positively charged ions and negatively charged ions. Taking water (H₂O) as an example, a hydrogen (H) atom consists of a positively charged proton nucleus surrounded by a negatively charged electron. If some force causes the electron to leave its original position, the hydrogen atom becomes positively charged. The oxygen atom, eager to gain an electron, and the hydrogen atom, possessing one electron, easily combine to form a water molecule. If external energy is used to decompose water, it will be transformed into a positively charged hydrogen ion (H₂O). + ), and a negatively charged hydroxide ion (OH-). — However, in the natural environment, hydroxide ions attach to water (H₂O + OH⁻). — =H3O2 — It exists in the form of negative ions.

[0003] Air containing a high concentration of negatively ionized water molecules is generally considered to make living organisms feel comfortable and pleasant. In Japan, positive ions are called "fatigue ions," while negative ions are called "comfort ions," "vitality ions," or "vitamins in the air." Negative ions are often generated in the natural environment due to changes in their state. For example, waterfalls are formed when water falls from a high place to a low place. As the water falls, it collides violently with rocks and disperses, and the friction between these dispersed water particles and the surrounding air can generate negative ions. Showers, fountains, and hot spring baths are similar to waterfalls; the dispersed water particles may also contain a lot of negative ions.

[0004] Dr. Philip Lenard, the 1905 Nobel Prize laureate in Physics from Germany, discovered that when a large amount of water cascades down a mountain and hits the rocks or water surface around the pool, it creates a large amount of mist-like spray. The collisions between water molecules cause them to break down, potentially generating a large number of negative ions. These negative ions absorb fine pollutants such as dust and odors from the air, subsequently attaching to trees, rocks, or dissolving into the pool water, thus purifying the air. This natural self-purification process is known as the "Lenard effect."

[0005] In addition, Professor Noboru Yamanoi of the Department of Biophysical Medicine at the University of Tokyo School of Medicine proposed in his book "Negative Ions Activate Life" that negative ions can adsorb pollutants in the air and create a fresh and vibrant atmosphere.

[0006] Negative ions have become a focus of global attention, primarily because modern living environments are heavily influenced by environmental pollutants such as car exhaust, factory smoke, and the extensive use of pesticides and chemicals, leading to a significant reduction in negative ions in the air. Many countries are keenly interested in researching the relationship between negative ions and health; consequently, negative ion generators, which artificially replenish negative ions, have gained popularity, and various related products have emerged.

[0007] Currently, the main methods for ionizing air molecules are as follows: 1. High-energy radiation: High-energy radiation such as ultraviolet rays, X-rays or gamma rays can cause air molecules to lose electrons, thereby producing positively charged ions and free electrons.

[0008] 2. Thermal ionization: Under high temperature conditions, air molecules gain enough energy to overcome ionization energy, resulting in the release of electrons.

[0009] 3. Chemical reactions: Some chemical reactions (such as those in lightning) can also lead to the ionization of air molecules, forming nitrogen oxides, etc.

[0010] 4. High-voltage ionization: Under the influence of a strong electric field, molecules in the air are accelerated and ionized due to collisions.

[0011] Small-particle-size negative oxygen ions refer to negative oxygen ions with smaller diameters. These ions are typically able to penetrate tiny gaps in the air more effectively and interact with pollutants and pathogens. These small-particle-size negative oxygen ions offer the following advantages: 1. Highly efficient deodorization: It can quickly absorb odor molecules in the air, improve air quality, and make the environment fresher.

[0012] 2. Inhibits bacteria: It has a good inhibitory effect on bacteria and viruses, can reduce the concentration of pathogenic microorganisms in the air, and reduce the risk of infection.

[0013] 3. Promotes health: Small-particle negative oxygen ions can enhance human immunity, boost metabolism, improve sleep quality, and help relieve stress and anxiety.

[0014] 4. Enhanced air circulation: Due to its small size, it can diffuse faster in the air, promoting air circulation and improving the overall comfort of the environment.

[0015] In addition, the antibacterial mechanism of negative oxygen ions mainly includes the following aspects: 1. Damage to cell membranes: Negative oxygen ions can bind to bacterial cell membranes, altering their structure and damaging the integrity of the cell membrane, ultimately leading to bacterial death.

[0016] 2. Oxidative damage: Negative oxygen ions can generate free radicals, which have strong oxidizing properties and can attack bacterial proteins, lipids and DNA, causing damage inside the cells.

[0017] 3. Inhibit reproduction: Negative oxygen ions can affect the metabolic process of bacteria, inhibit their reproduction and growth, and reduce their activity.

[0018] 4. Reduce pathogen concentration: Negative oxygen ions can neutralize pathogenic microorganisms in the air, reducing their concentration in the air and thus reducing the risk of infection.

[0019] High-voltage ionization is advantageous for commercialization due to its lower implementation cost. Therefore, the creator developed a "spherical corona generator" and obtained Taiwan Utility Model Patent No. M642093. Please refer to [link / reference]. Figure 1 As shown, it mainly includes a discharge needle plate 1, on which at least a few discharge needles 2 are mounted. A grounding plate 3 is located on one side of the discharge needle plate 1, and the grounding plate 3 has several sterilization holes 4. The discharge needles 2 are respectively positioned at the center of each sterilization hole. A discharge ring 5 is provided around each sterilization hole 4 on the grounding plate 3, and a plurality of pointed tips 6 are recessed on the outer periphery of each discharge ring 5. The grounding plate 3 provides a negative high voltage to the discharge needles 1, thereby generating a discharge between the tip of the discharge needle 1 and the discharge ring 5, adsorbing positively charged bacteria and dust, achieving the effect of air purification and sterilization. However, although it has the effect of air purification and sterilization, it still has the following disadvantages: 1. Spherical discharge, small reaction area; 2. Only suitable for small areas; 3. Difficult to manufacture, high cost of discharge needles; 4. High wind resistance.

[0020] In addition, please see Figure 2 The high-voltage generation circuit of the aforementioned conventional spherical corona generator uses an MCU (microprocessor) to generate a frequency and performs pulse width modulation (PWM) to adjust the duty cycle of the switching signal. Although adjusting the PWM duty cycle can adjust the high-voltage output, the high-frequency on and off control signal will affect the stability of the negative oxygen ion concentration output and increase the temperature of the transistor switch.

[0021] In view of this, after observing the above-mentioned shortcomings, the creator of this work believed that the above-mentioned spherical corona generator still needed further improvement, and thus this work came into being. Utility Model Content

[0022] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0023] In view of the problems existing in the above-mentioned multi-faceted needle tip plasma negative oxygen ion generator, this utility model is proposed.

[0024] Therefore, the purpose of this utility model is to provide a multi-faceted needle tip plasma negative oxygen ion generator, which aims to achieve indoor air purification, deodorization, and antibacterial effects while having the advantages of low cost, low wind resistance, and applicability to large areas.

[0025] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a multi-faceted needle-tip plasma negative oxygen ion generator, comprising: a rear cover with a receiving groove at its front and a ventilation hole at the bottom of the receiving groove; an air duct extending outward from the rear of the rear cover, the air duct communicating with the ventilation hole; a fan located behind the rear cover and fixed to the air duct; and a grounding plate fixed in the receiving groove of the rear cover, the grounding plate having at least one hollow portion, and a conductive layer formed on the back of the grounding plate. The conductive layer has multifaceted serrated tips formed around the perforated portion; a multifaceted needle-tip metal wire is fixed in the receiving groove of the rear cover and located in front of the perforated portion, the multifaceted needle-tip metal wire having several sharp protrusions on its surface; a high-voltage module is electrically connected to the multifaceted needle-tip metal wire and the conductive layer respectively, and can provide a low-current, high-voltage DC high voltage to the multifaceted needle-tip metal wire; a front cover is fixed in front of the rear cover, the front cover having an air outlet corresponding to the air inlet.

[0026] As a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator of this utility model, the receiving groove is provided with several positioning posts on both sides respectively, and the multi-faceted needle tip metal wire is horizontally wound around the positioning posts in an "S" shape.

[0027] As a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator of this utility model, the positioning posts are semi-cylinders with a semi-circular outer shape, and the positioning posts have a shoulder in the radial direction, so that the multi-faceted needle tip metal wire is located on the shoulder and is separated from the grounding plate by an appropriate distance.

[0028] As a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator of this utility model, the back cover has several arc-shaped flanges protruding from the back of the positioning posts, which can respectively abut against the positioning posts and limit and fix the multi-faceted needle tip metal wire.

[0029] As a preferred embodiment of the multifaceted needle tip plasma negative oxygen ion generator of this utility model, wherein: an insulating post is provided on the back cover at the even angles opposite to the receiving groove, and the two ends of the multifaceted needle tip metal wire are respectively fixed on the insulating posts.

[0030] In a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator described in this utility model, the needle tips are arranged in a spiral shape on the surface of the multi-faceted needle tip metal wire.

[0031] In a preferred embodiment of the multi-faceted needle-tip plasma negative oxygen ion generator described in this utility model, the grounding plate is a printed circuit board, and the conductive layer is copper foil.

[0032] As a preferred embodiment of the multi-faceted needle-tip plasma negative oxygen ion generator of this utility model, one side of the hollow part has an opening.

[0033] As a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator described in this utility model, the high-voltage module is composed of a self-excited circuit, a step-up transformer, and a voltage multiplier circuit. The high-voltage module can generate a high-voltage DC to the multi-faceted needle tip metal wire by oscillating the external low-voltage DC through the self-excited circuit, stepping up the voltage through the step-up transformer, and then passing through the multi-stage voltage multiplier circuit.

[0034] As a preferred embodiment of the multi-faceted needle tip plasma negative oxygen ion generator described in this utility model, the high-voltage module is further provided with a step-down line in front of the step-up transformer. The step-down line has a variable resistor, which allows the externally input low DC voltage to be adjusted to the amplitude of the input power required by the step-up transformer.

[0035] The beneficial effects of this utility model are that it can not only achieve indoor air purification, deodorization, and antibacterial effects, but also has the advantages of low cost, low wind resistance, and applicability to large areas. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of a spherical corona generator.

[0037] Figure 2 The waveform diagram shows the PWM input voltage of the spherical corona generator.

[0038] Figure 3 This is an exploded view (a) of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0039] Figure 4 This is an exploded view (b) of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0040] Figure 5 This is a schematic diagram of the overall structure of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0041] Figure 6 This is a cross-sectional view of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0042] Figure 7 This is a partial enlarged view of the metal wire at the tip of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0043] Figure 8 This is a schematic diagram showing the combination of the grounding plate and the multi-faceted needle-tip metal wire in a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0044] Figure 9 This is a circuit diagram of the high-voltage module of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0045] Figure 10 This is a schematic diagram illustrating the working principle of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model.

[0046] Figure 11 The voltage waveform diagram of a multi-faceted needle-tip plasma negative oxygen ion generator according to this utility model is shown in the figure. In the diagram: 10. Rear cover, 11. Receiving groove, 12. Air inlet, 13. Air duct, 14. Positioning post, 141. Shoulder, 15. Insulating post, 20. Fan, 30. Grounding plate, 31. Hollowed-out part, 32. Conductive layer, 321. Tip, 40. Multi-faceted needle-point metal wire, 41. Needle tip, 50. High voltage module, 51. Self-excited circuit, 52. Step-up transformer, 53. Voltage multiplier circuit, 54. Step-down circuit, 541. Variable resistor, 60. Front cover, 61. Air outlet, 611. Grille protection frame, 62. Ear, 63. Arc-shaped flange. Detailed Implementation

[0047] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0050] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth. Example 1

[0051] Reference Figures 3-9 This is the first embodiment of the present invention, providing a multi-faceted needle-tip plasma negative oxygen ion generator. This multi-faceted needle-tip plasma negative oxygen ion generator includes a rear cover 10, with a receiving groove 11 at its front and an air inlet 12 at the bottom of the receiving groove 11. An air duct 13 extends outward from the rear of the rear cover 10, communicating with the air inlet 12. Several positioning posts 14 are correspondingly provided on the left and right sides of the rear cover 10 within the receiving groove 11. These positioning posts 14 are semi-cylinders with a semi-circular outer shape, and each positioning post 14 has a shoulder 141 radially at a predetermined height. An insulating post 15 is provided on the rear cover 10 at the even-numbered corners of the receiving groove 11. A fan 20 is located behind the rear cover 10 and fixed to the air duct 13.

[0052] A grounding board 30 is fixed in the receiving groove 11 of the rear cover 10. The grounding board 30 has several rectangular cutouts 31 arranged horizontally opposite to the air inlet 12, and each of the cutouts has an opening on one side. A conductive layer 32 is formed on the back of the grounding board 30. In this embodiment, the grounding board 30 is a PCB (printed circuit board), and the conductive layer 32 is the copper foil on the printed circuit board. The conductive layer 32 has multiple serrated tips 321 formed on the periphery of the cutouts 31.

[0053] A multifaceted needle-tip metal wire 40 is fixed at both ends to the insulating posts 15. The multifaceted needle-tip metal wire 40 is laterally wound around the shoulder 141 of the positioning posts 14 in an "S" shape, so that the multifaceted needle-tip metal wire 40 is located at a fixed height of the positioning posts 14 and is separated from the grounding plate 30 by an appropriate distance. The multifaceted needle-tip metal wire 40 has several sharp protruding needle tips 41 on its surface, and the needle tips 41 are distributed in a spiral shape on the surface of the multifaceted needle-tip metal wire 40.

[0054] A high-voltage module 50 is electrically connected to the multifaceted needle-tip metal wire 40 and the conductive layer 32. The high-voltage module 50 is composed of a self-excited circuit 51, a step-up transformer 52, and a voltage multiplier circuit 53 connected in series. The high-voltage module 50 can generate a high-voltage DC from an external low-voltage source by oscillating through the self-excited circuit 51, then stepping up the voltage through the step-up transformer 52, and finally passing through the multi-stage voltage multiplier circuit 53. The multifaceted needle-tip metal wire 40 is connected to the high-voltage module 50. The high voltage DC terminal is connected to the high voltage ground terminal of the high voltage module 50, and the conductive layer 32 is connected to the high voltage ground terminal of the high voltage module 50, so that the high voltage module 50 can provide a high voltage DC with low current to the multifaceted needle tip metal wire 40. In addition, the high voltage module 50 is provided with a step-down line 54 in front of the step-up transformer 52. The step-down line 54 has a variable resistor 541, so that the externally input low DC voltage can be adjusted to the amplitude of the input power required by the step-up transformer 52 through the variable resistor 541.

[0055] A front cover 60 is fixed in front of the rear cover 10 and covers the receiving groove 11 of the rear cover. The front cover 60 has an air outlet 61 corresponding to the air inlet 12. The air outlet 61 is provided with a grid protective frame 611 to prevent the danger of high voltage electric shock. The front cover 60 has several ears 62 on its periphery, which can be used to fix it to the system housing. The back of the rear cover 60 has several arc-shaped flanges 63 protruding from the positioning posts 14, which can abut against the positioning posts 14 respectively and limit and fix the multi-faceted needle tip metal wire 40. Example 2

[0056] Reference Figure 10This is the second embodiment of the present invention. This embodiment differs from the second embodiment in that: when the present invention is powered on, because the rear cover 10 has an air inlet 12 and an air duct 13, the fan 20 can draw outside air into the rear cover 10, which is then guided through the air duct 13 to the grounding plate 30 and the multi-faceted pin-tip metal wire 40, and finally released through the air outlet 61 of the front cover 60. When the multi-faceted pin-tip metal wire 40 receives the negative high voltage generated by the high-voltage module 50, the large high-low voltage difference between the multi-faceted pin-tip metal wire 40 and the conductive layer 32 causes the multi-faceted pin-tip metal wire... The 40 will generate a discharge effect on the conductive layer 32. Since the conductive layer 32 has a plurality of pointed parts 321 around its outer periphery, forming a multi-point discharge plate, a spherical plasma is formed above the tip 41 of the multi-faceted needle-tip metal wire 40. Since the tips 41 are spirally distributed on the surface of the multi-faceted needle-tip metal wire 40, the spherical plasma will also be distributed in a 360° multi-faceted manner on the surface of the multi-faceted needle-tip metal wire 40. When the airflow direction is from the rear cover 10 to the front cover 60 by the action of the fan 20, the dust and bacteria in the airflow can be fully adsorbed by the OH- hydroxide ions generated by the reaction of the spherical plasma, thereby achieving the effect of purifying the air and sterilizing.

[0057] The remaining structure is the same as that in Example 1. Example 3

[0058] Reference Figure 11 This is the third embodiment of the present invention. The difference between this embodiment and the third embodiment is that the voltage waveform diagram of this invention is as follows: the high voltage generating circuit of this invention adopts a self-excited oscillation mode, and uses the variable resistor 541 of the step-down circuit 54 to adjust the voltage amplitude to obtain the required output high voltage. This method of adjusting the amplitude has a much higher stability for the concentration of negative oxygen ions than the conventional method of using PWM to adjust the duty cycle of the switching signal. Although adjusting the PWM duty cycle has the function of adjusting the high voltage output, the high-frequency on and off control signals will affect the stability of the concentration output of negative oxygen ions and increase the temperature of the transistor.

[0059] The remaining structure is the same as that in Example 2.

[0060] In addition to the effects produced by negative oxygen ions mentioned above, this creation also has the following expected effects: 1. This invention uses a multifaceted needle-tipped conductor metal wire and a grounding plate to form a high-voltage electric field by connecting multiple needle tips in parallel. It has a large opening area, which helps the airflow and does not easily form wind resistance.

[0061] 2. This invention allows for the use of multiple standard modules in parallel installation, depending on the available area and the shape of the system casing, making it suitable for larger indoor air purification applications.

[0062] 3. This invention uses a multi-faceted, spiral-shaped metal wire (such as a multi-faceted lace saw wire) to replace the traditional discharge copper needle, which has the advantages of extremely low cost and easy processing, and is suitable for large-area applications.

[0063] 4. The grounding board of this invention uses a PCB (printed circuit board), which is a single-sided board with copper foil on the back. This allows the conductive layer to be printed with etched resist, resulting in multi-faceted serrated tips. It is also designed in parallel to reduce the number of soldering steps, lower air resistance, and replace traditional metal discharge plates.

[0064] 5. This invention uses an electronic filter system, employing plasma ion sterilization and dust removal, requiring no consumables.

Claims

1. A multi-faceted needle-tip plasma negative oxygen ion generator, characterized in that: Includes a rear cover with a receiving groove at the front and a ventilation hole at the bottom of the receiving groove. Additionally, an air duct extends outward from the rear of the rear cover, and the air duct and the ventilation hole are connected. A fan is located behind the rear cover and fixed to the air duct; A grounding plate is fixed in the receiving groove of the back cover. The grounding plate has at least one hollow part, and a conductive layer is formed on the back of the grounding plate. The conductive layer has multi-faceted serrated tips on the periphery of the hollow part. A multifaceted needle-tip metal wire is fixed in the receiving groove of the back cover and located in front of the hollow part. The multifaceted needle-tip metal wire is attached to a needle tip with several sharp protrusions on its surface. A high-voltage module is electrically connected to the multifaceted needle-tip metal wire and the conductive layer respectively, and can provide a low-current, high-voltage DC high voltage to the multifaceted needle-tip metal wire. A front cover is fixed in front of the rear cover, and the front cover has an air outlet corresponding to the ventilation hole.

2. The multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: Several positioning posts are provided on each side of the receiving groove, and the multifaceted needle-tip metal wire is wound laterally around the positioning post in an "S" shape.

3. The multi-faceted needle-tip plasma negative oxygen ion generator according to claim 2, characterized in that: The positioning post is a semi-cylinder with a semi-circular outer side, and the positioning post has a shoulder in the radial direction, so that the multifaceted needle tip metal wire is located on the shoulder and is separated from the grounding plate by an appropriate distance.

4. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 3, characterized in that: The back cover has several arc-shaped flanges that protrude from the positioning post, which can abut against the positioning post and limit and fix the multi-faceted needle tip metal wire.

5. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: An insulating post is provided at each of the even angles opposite to the receiving groove on the back cover, and the two ends of the multifaceted needle-tip metal wire are respectively fixed on the insulating post.

6. The multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: The needle tips are arranged in a spiral pattern on the surface of the multifaceted needle tip metal wire.

7. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: The grounding board is a printed circuit board, and the conductive layer is copper foil.

8. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: One side of the hollowed-out section has an opening.

9. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 1, characterized in that: The high-voltage module consists of a self-excited circuit, a step-up transformer, and a voltage multiplier circuit. The high-voltage module can generate a high-voltage DC to the multifaceted needle-tip metal wire by oscillating the external low-voltage DC through the self-excited circuit, stepping up the voltage through the step-up transformer, and then passing through the multi-stage voltage multiplier circuit.

10. A multi-faceted needle-tip plasma negative oxygen ion generator according to claim 9, characterized in that: The high-voltage module is further equipped with a step-down line in front of the step-up transformer. The step-down line has a variable resistor, which allows the externally input low-voltage DC to be adjusted to the amplitude of the input power required by the step-up transformer.

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