Plasma generation device with controllable product, method and application

Abstract

The invention discloses a product-controllable plasma generation device and method and application. The device comprises a dielectric barrier discharge structure, and an electrode negative electrode of the dielectric barrier discharge structure is made of a water absorption material; a capillary water pipe is arranged in the negative electrode and connected with a water outlet of a piston cylinder, an upper end piston is installed at an upper end opening of the piston cylinder, a water tank is arranged at the position higher than the maximum limiting height of the upper end piston and annularly surrounds the piston cylinder, and the bottom of the water tank is communicated with the piston cylinder through a pipeline. The water tank is communicated with the atmosphere through an air valve; when the upper-end piston is pressed, the air valve is closed, quantitative water flows into the capillary water pipe and then uniformly permeates into the negative electrode, and the outflow amount of the water is determined by the downward moving distance of the upper-end piston. The device is low in energy consumption, high in efficiency, low in cost, good in heat management capability, capable of accurately controlling generated products, convenient to miniaturize and wide in application prospect.

Description

Technical Field

[0001] The invention belongs to the field of plasma technology and relates to a plasma generating device, method and application with controllable products. Background Art

[0002] As an efficient and flexible means of energy conversion and reaction medium regulation, plasma technology has been widely used in the fields of surface treatment, medical device disinfection, environmental management, and food preservation in recent years. However, the common plasma generation devices still have major technical bottlenecks in product regulation, which are specifically manifested in the following points: (1) Difficulty in regulating active particles. Plasma sources generate a wide variety of active particles, including electrons, ions, free radicals, excited molecules, etc. The types and concentrations of these particles directly determine the application performance of the device. However, existing plasma sources have significant limitations in regulating products, making it difficult to precisely control the generation of target active particles. This not only leads to instability in disinfection and sterilization effects, but also limits the widespread application of the device in specific scenarios.

[0003] (2) Traditional gas control methods are difficult to miniaturize. Existing plasma generators usually change the reaction conditions by adjusting the type, flow rate and pressure of the input gas to achieve the selective generation of active particles. However, this gas control method requires a complex pipeline system, precise airflow control devices and large gas source equipment, which makes it difficult to achieve miniaturization. Therefore, traditional gas control methods are more suitable for large-scale industrial scenarios, and their application in portable and handheld devices is greatly limited.

[0004] (3) Limitations of voltage regulation methods. Another common method of product regulation is to change the reaction conditions of the plasma by adjusting the input voltage. However, drastic changes in voltage can easily lead to overheating of electrical components, causing heat accumulation problems and affecting the operating stability and service life of the equipment. At the same time, high-voltage operation is usually accompanied by high energy consumption, which not only increases operating costs but is also not conducive to environmental protection.

[0005] (4) High energy consumption and large heat dissipation requirements. Traditional plasma generators usually have high power consumption, often exceeding 100 watts, and generate a lot of heat, requiring additional heat dissipation devices for cooling. This high energy consumption design not only increases the operating cost of the equipment, but also increases the size and weight of the device, further limiting its application in home and portable scenarios.

[0006] Based on the above technical pain points, there is an urgent need for a plasma generating device with controllable products to adapt to diverse application needs and scenarios. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a product-controllable plasma generating device with low energy consumption, high efficiency, low cost, good heat management capability, the ability to accurately control the generated products, easy miniaturization, and broad application prospects.

[0008] The second object of the present invention is to provide a method for using a plasma generating device with controllable products.

[0009] The third object of the present invention is to provide a plasma generating device with controllable products for use in the disinfection of medical instruments and sensitive surfaces.

[0010] The technical solution adopted by the present invention is a product-controllable plasma generating device, comprising a dielectric barrier discharge structure, wherein the negative electrode of the dielectric barrier discharge structure is made of a water-absorbing material; A capillary water tube is provided in the negative electrode of the electrode, and the capillary water tube is connected to the water outlet of the piston cylinder. An upper piston is installed at the upper port of the piston cylinder, and a water tank is provided at a position higher than the maximum limit height of the upper piston. The water tank is annularly arranged around the piston cylinder, and the bottom of the water tank is connected to the piston cylinder through a pipeline. Before pressing the upper piston, the water tank is connected to the atmosphere through an air valve, and the piston cylinder is filled with water; when the upper piston is pressed, the air valve is closed, and a certain amount of water flows to the capillary water tube, and then evenly penetrates into the negative electrode of the electrode, and the outflow of water is linearly related to the downward movement distance of the upper piston.

[0011] Furthermore, the water outlet of the piston cylinder is annular and is located below the pipe; an opening and closing device is provided at the bottom of the piston cylinder, and the opening and closing device includes a piston and a spring, a sealing gasket is provided at the edge of the piston head of the piston, and a spring is provided between the piston head and the inner bottom wall of the piston cylinder; when the upper piston is pressed down, the water in the piston cylinder pushes the piston head of the opening and closing device to move downward, the spring is compressed, and the water outlet of the piston cylinder opens. After the water flows out, the spring recovers its deformation and pushes the piston head to seal the water outlet of the piston cylinder; after the air valve is opened, due to the principle of communicating vessels, the water in the water tank enters the piston cylinder, and the piston cylinder is filled with water.

[0012] Furthermore, the negative electrode is provided with grooves distributed in a star-shaped pattern, and the capillary water tubes are fixed in the grooves.

[0013] Furthermore, the water distribution pipe is distributed in a scattered shape around the piston cylinder, and the side of the water distribution pipe away from the piston cylinder is lower than the side close to the piston cylinder, forming a slope. The side of the water distribution pipe close to the piston cylinder is located at the water outlet of the piston cylinder, and the side of the water distribution pipe away from the piston cylinder is connected to the capillary water pipe through a vertical pipe, so that the water flowing out of the piston cylinder is evenly distributed to the capillary water pipes distributed in a star-shaped manner.

[0014] Furthermore, a closing plug is provided at the port of the air valve, which is fixedly connected to the upper piston, and a supporting spring is provided between the upper piston and the outer wall of the piston cylinder; when the upper piston is pressed down to move downward, the closing plug moves downward at the same time, closing the air valve, and the supporting spring is compressed; when the upper piston is not pressed down, the supporting spring resumes its deformation, driving the upper piston and the closing plug to reset, and the air valve opens.

[0015] Furthermore, the top of the upper piston is connected to a trigger device for quantitatively pressing the upper piston downward.

[0016] Furthermore, the lower end cylinder of the trigger device is connected to the top of the upper end piston through a bearing, and can rotate coaxially relative to the upper end piston; the side wall of the lower end cylinder of the trigger device is provided with a radially extending limit pin, and a limit slot is provided below the limit pin, the limit slot is fixedly connected to the piston cylinder, and the limit slot is circumferentially provided with a multi-layer step structure with decreasing height, and each step corresponds to a gear; when the limit pin rotates to different layers of the steps, the downward movement distance of the downward pressure trigger device is different, and each time the limit pin rotates to a fixed step, the downward movement distance of the downward pressure trigger device remains unchanged, thereby ensuring that the water output is accurate and consistent.

[0017] Furthermore, the dielectric barrier discharge structure also includes an anode electrode and an intermediate medium, wherein the intermediate medium is sandwiched between the cathode electrode and the cathode electrode.

[0018] A method for using a product-controllable plasma generating device comprises the following steps: S1, device initialization: fill the water tank with water and move the upper piston to the highest position to ensure that the water level in the water tank is higher than the pipe; S2, operation process of the device: Water injection discharge: before pressing the upper piston, the water tank is connected to the atmosphere through the air valve so that the piston cylinder is filled with water; when pressing the upper piston, the air valve is closed, and a certain amount of water flows to the capillary water pipe. The outflow of water corresponds to the downward movement distance of the upper piston. The capillary water pipe evenly infiltrates the water into the negative electrode through multiple capillary holes evenly distributed; start the dielectric barrier discharge, and obtain the corresponding product according to the amount of water injected; Rebound and water replenishment: After the discharge treatment is completed, the pressure on the upper piston is released and reset; the water outlet of the piston cylinder is closed, the air valve is opened, and the water in the water tank enters the piston cylinder, so that the piston cylinder is filled with water, and the device returns to its initial position, waiting to enter the next cycle.

[0019] The invention discloses an application of a product-controllable plasma generating device in the disinfection of medical instruments and sensitive surfaces.

[0020] The beneficial effects of the present invention are: (1) The present invention greatly reduces the reliance on electrical control, and realizes equal control of water volume through a purely mechanical structure, successfully reducing the energy consumption of the device during use, reducing the manufacturing cost, extending the device life, and greatly improving the use efficiency of the device. When not in use, the upper piston will keep the water in the piston cylinder and will not communicate with the water distribution device; when in use, the upper piston is pushed down and the water will enter the water distribution device. Subsequently, during the rebound process, the water in the water tank will be sucked into the piston cylinder due to the atmospheric pressure, and the amount of water will be the same as the amount of water used previously.

[0021] (2) Compared with the existing plasma generator, the present invention does not need to adjust the voltage significantly to control the reaction products, but adjusts the electrode conductivity to accurately control the generated products. It is more accurate and reliable, and can be flexibly adjusted according to different needs, thereby achieving a more stable and efficient disinfection and sterilization effect. At the same time, the plasma generator can be miniaturized, which is easy to integrate into handheld devices, improving user friendliness.

[0022] (3) The plasma generator of the present invention has low energy consumption, and it is expected that the energy consumption can be reduced by 30%. The energy consumption of traditional plasma generators often exceeds 100 watts, while the design of the present invention can be controlled within 70 watts, which is suitable for daily household use; by optimizing energy use, operating costs and environmental burdens are reduced.

[0023] (4) The plasma generator of the present invention has good heat management capabilities and effectively reduces heat generation. Tests show that after the device has been working continuously for 30 minutes, the temperature rise does not exceed 40°C, while traditional devices may exceed 60°C. This simplifies the heat dissipation requirements, improves the stability and life of the equipment, and can cope with more usage requirements and challenges.

[0024] (5) The plasma generator of the present invention has a reaction area with a large contact area with the air. The negative electrode is combined with the combing surface of a traditional pet comber. By cleverly arranging the combing teeth on the periphery of the negative electrode plate, the contact area with the pet hair is increased, and the efficiency and coverage of disinfection and sterilization are effectively improved. Experimental data show that when the device of the present invention is used to disinfect pet hair, the sterilization rate is as high as 99.9%, while the sterilization rate of traditional brushes is usually around 70%; this significantly improves the disinfection and sterilization effect. The present invention not only simplifies the operating process, but also reduces energy consumption and heat management difficulty, while making the control of chemical reactions more precise and reliable, making the present invention show excellent application potential in the field of pet care. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the structure of controlling the rotation angle of the piston in an embodiment of the present invention.

[0028] Figure 3 Schematic diagram of the structure of the capillary water tube in the embodiment of the present invention.

[0029] Figure 4 Schematic diagram of the dielectric barrier discharge structure in an embodiment of the present invention.

[0030] Figure 5 Schematic diagram of the structure of the comb teeth in the embodiment of the present invention.

[0031] Figure 6 It is a perspective view of an embodiment of the present invention and an assembly structure of a pet brush.

[0032] Figure 7 yes Figure 6 Front view of .

[0033] In the figure, 1. trigger device, 2. air valve, 3. piston cylinder, 4. water tank, 5. opening and closing device, 6. water distribution pipeline, 7. capillary water tube, 8. upper piston, 9. positive electrode, 10. intermediate medium, 11. negative electrode, 12. pipeline, 13. vertical pipeline, 14. closing plug, 15. connection, 16. limit needle, 17. limit slot, 18. limit baffle, 19. comb teeth. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] The basic concept of the embodiment of the present invention is as follows: The conductive properties of the electrodes in the plasma generator play a decisive role in the types of products and the ionization effect. In the embodiment of the present invention, a water-absorbing material is selected as the negative electrode, and the conductivity of the electrode is adjusted by changing its water absorption. Under different water absorption states, the water filling ratio inside the material will be different, resulting in changes in its conductivity. When the voltage remains stable, this change will affect the plasma generation process, thereby generating different types of products and achieving diversified disinfection effects.

[0036] Embodiment 1, A plasma generating device with controllable products, such as Figure 1 As shown, it includes a dielectric barrier discharge structure, which includes an electrode positive electrode 9, an intermediate medium 10 and an electrode negative electrode 11, and the electrode negative electrode 11 is made of a water-absorbing material.

[0037] The negative electrode 11 is connected to the water outlet of the piston cylinder 3 through a water distribution device. The upper end piston 8 is installed at the upper end of the piston cylinder 3. The upper end piston 8 is connected to the inner wall of the piston cylinder 3 in a sliding and sealing manner, and the upper end piston 8 can move up and down. The water tank 4 is annularly surrounding the piston cylinder 3, and the bottom of the water tank 4 is connected to the piston cylinder 3 through a pipe 12. The water tank 4 is a container for storing water. The water inside the container will be quantitatively absorbed by the water-absorbing material of the negative electrode 11 as needed as the whole device is running, thereby changing the conductivity of the negative electrode 11.

[0038] like Figure 1 As shown, the bottom of the water tank 4 is higher than the maximum limit height of the upper piston 8, the piston cylinder 3 and the water tank 4 are always connected, and an air valve 2 is provided at the upper end of the water tank 4. The water tank 4 is connected to the atmosphere through the air valve 2. Using the principle of communicating vessels, when the water tank 4 is in contact with the atmosphere, the water level in the water tank 4 will remain consistent, thereby ensuring that the piston cylinder 3 is always full of water, and further ensuring that the amount of water output each time it is pressed is accurate and consistent.

[0039] A limit baffle 18 is provided at the top of the piston cylinder 3, and the upper end of the upper piston 8 extends through the top of the piston cylinder 3, that is, the upper end of the upper piston 8 extends through the through hole in the center of the limit baffle 18. When the upper piston 8 is at the maximum limit height, the axial position is limited by the limit baffle 18 to ensure that the highest point position of the upper piston 8 is consistent each time; the upper piston 8 has a radial extension at a position higher than the piston cylinder 3, and the starting part of the radial extension is at Figure 1It can be seen that it is located below the limit baffle 18. There are four rectangular through-notches symmetrical about the central axis on the wall of the upper section of the piston cylinder 3 (lower than the limit baffle 18 and higher than the height of the piston head of the upper piston 8), and the radial extensions extend out of the piston cylinder 3 from the notches respectively, so as to ensure that the whole including the upper piston 8 can move radially when pressed. The upper end of the support spring is in close contact with the bottom of the radial extension of the upper piston 8 (i.e. the starting part), and the lower end of the support spring is connected to the outer wall of the piston cylinder 3; when the upper piston 8 is pressed to move downward, the support spring is compressed, and the water in the piston cylinder 3 is squeezed into the water distribution device at the lower end. In the untriggered state, that is, the upper piston 8 is not pressed downward, the upper piston 8 is pushed to the highest point of the piston cylinder 3 by the elastic deformation of the support spring, and the limit baffle 18 presses against the piston at the highest point, so that it will not be directly separated from the entire device due to the upward force of the support spring.

[0040] Before pressing the upper piston 8, the water tank 4 is connected to the atmosphere through the air valve 2, and the piston cylinder 3 is filled with water; a closing plug 14 is provided at the port of the air valve 2, and the closing plug 14 is fixedly connected to the radial extension of the upper piston 8. When the upper piston 8 is pressed to move downward, the closing plug 14 moves downward at the same time to close the air valve 2, thereby sealing the water tank 4 and ensuring that water can be pressed out. At this time, the supporting spring is compressed; when the upper piston 8 is not pressed downward, the supporting spring resumes its deformation, driving the upper piston 8 and the closing plug 14 to reset, and the air valve 2 opens accordingly; the outflow of water is linearly related to the downward movement distance of the upper piston 8.

[0041] The water outlet of the piston cylinder 3 is annular and is arranged on the cylinder wall of the piston cylinder 3 and is located below the pipeline 12 .

[0042] The water distribution device includes a water distribution pipeline 6, a vertical pipeline 13 and a capillary water pipe 7. The water distribution pipeline 6 is scattered around the piston cylinder 3. The side of the water distribution pipeline 6 away from the piston cylinder 3 is lower than the side close to the piston cylinder 3 to form a slope. The side of the water distribution pipeline 6 close to the piston cylinder 3 is located at the water outlet of the piston cylinder 3, and the water inlet of the water distribution pipeline 6 is in contact with the piston cylinder 3. The side of the water distribution pipeline 6 away from the piston cylinder 3 is connected to the edge of the capillary water pipe 7 through the vertical pipeline 13. The diameter of the vertical pipeline 13 gradually decreases from top to bottom, and the lower end of the vertical pipeline 13 is close to the diameter of the capillary water pipe 7.

[0043] An opening and closing device 5 is provided at the bottom of the piston cylinder 3, and the opening and closing device 5 includes a piston and a spring. A radially extending sealing gasket is provided at the edge of the piston head of the piston, and a spring is provided between the piston head and the inner bottom wall of the piston cylinder 3; the thickness of the edge of the piston head of the opening and closing device 5 is greater than the width of the water outlet of the piston cylinder 3 of the water distribution pipe 6, and is used to control whether the water distribution pipe 6 and the piston cylinder 3 are connected.

[0044] When the upper piston 8 is pressed down, the air valve 2 is closed, the water in the piston cylinder 3 pushes the piston head of the opening and closing device 5 downward, the opening and closing device 5 is opened, the spring is compressed, and a certain amount of water in the piston cylinder 3 flows out and enters the water distribution pipe 6. The water flow will use the downward slope in the water distribution pipe 6 to diffuse from the center to the surroundings, and directly fall to the capillary water pipe 7 through the vertical pipe 13, so that the water flowing out of the piston cylinder 3 is evenly transported to the capillary water pipe 7, and the capillary water pipe 7 evenly infiltrates the water into the negative electrode 11 through multiple capillary holes evenly distributed. The outflow of water in the piston cylinder 3 corresponds to the downward movement distance of the upper piston 8; after the water in the piston cylinder 3 flows out, the spring of the opening and closing device 5 recovers its deformation and pushes the piston head to seal the water outlet of the piston cylinder 3; after the air valve 2 is opened, due to the principle of communicating vessels, the water in the water tank 4 enters the piston cylinder 3, and the piston cylinder 3 is filled with water.

[0045] The spring of the opening and closing device 5 has a high elastic coefficient, and the spring is not compressed only by the gravity of the water above, so that the opening and closing device 5 is still kept in a closed state when the piston cylinder 3 is filled with water, that is, the piston of the opening and closing device 5 is pushed to the uppermost limit height; when the upper piston 8 is not pressed down, the opening and closing device 5 will keep the water inlet of the water distribution pipe 6 closed. The head edge of the piston of the opening and closing device 5 is set to a silicone material so that the water in the piston cylinder 3 will not flow into the water distribution pipe 6 through the gap.

[0046] like Figure 3 As shown, the capillary water tube 7 extends from the center to fourteen directions around it, and is distributed in a star-shaped manner to achieve the uniform water discharge requirement at the bottom. The center point is the lowest point, and there is a certain but very small slope with the outermost line, and the inclination angle is 1-2°, which is convenient for water to flow to the center. If it is too large, the negative electrode material will be too thick and it is not easy to react.

[0047] The capillary water pipe 7 is in direct contact with the negative electrode 11 of the plasma generator, and water is evenly delivered to the inside of the water-absorbing material in a drip irrigation manner. The small holes (capillaries) evenly distributed on the surface of the capillary water pipe 7 allow the water to be evenly distributed after the water flows through. This design can effectively prevent the negative electrode 11 from absorbing excessive water, thereby maintaining the balance and stable operation of the entire device.

[0048] like Figure 4 As shown, a star-shaped groove for installing a capillary water tube 7 is reserved on the upper side of the negative electrode 11, and the groove is not connected from top to bottom; the capillary water tube 7 is fixed in the groove of the negative electrode 11, and the capillary water tube 7 discharges water through the capillary pores (small holes) to evenly deliver the water to the inside of the water-absorbing material.

[0049] The form of the trigger device 1 depends on the specific application scenario. When the human force presses downward, the plasma generator starts to run, and the device will stop operating after releasing and resetting. It can also be an electrically driven button. The trigger device 1 plays the role of pressing down the upper piston 8. In the embodiment, the trigger device 1 is located above the upper piston 8, and a bearing is installed at the connection 15 between the trigger device 1 and the upper piston 8. The outer ring of the bearing is fixedly connected to the top of the upper piston 8, and the inner ring of the bearing is fixedly connected to the lower cylinder of the trigger device 1. The trigger device 1 can rotate coaxially relative to the upper piston 8.

[0050] Water volume control mechanism: like Figure 2 As shown, a radially extending limit pin 16 is fixed to the side wall of the lower end cylinder of the trigger device 1, and a limit slot 17 is provided at the lower end of the limit pin 16. The limit slot 17 is fixedly connected to the outer wall of the piston cylinder 3, and the limit slot 17 is located at the upper end of the limit baffle 18; the limit slot 17 is composed of 5 circumferentially distributed gears, and each gear is lower in height relative to the previous gear, presenting a multi-layer stepped structure with decreasing height.

[0051] Figure 2 In the embodiment, the limit pin 16 is in the first gear, that is, on the highest step. At this time, the limit pin 16 has no space to fall, that is, the trigger device 1 integrated with it cannot fall, that is, it cannot be pressed downward, that is, it cannot be triggered, and the upper piston 8 cannot move downward. When the trigger device 1 moves clockwise, the limit pin 16 moves clockwise accordingly and moves to the top of the second gear. There is a space that can fall. At this time, the trigger device 1 is pressed, and the trigger device 1 can move downward and move the upper piston 8 downward. Because the limit slot 17 has multiple steps, the limit pin 16 rotates to different steps, and the trigger device 1 moves downward at different distances; as long as the relative position of the limit pin 16 relative to the limit slot 17 is ensured to remain unchanged (the limit pin 16 rotates to a fixed step each time), the downward stroke obtained by each press will not change, that is, the downward stroke of the upper piston 8 remains unchanged, ensuring that the water output is accurate and consistent.

[0052] Electrode mechanism of action: like Figure 4 As shown, the dielectric barrier discharge structure includes an electrode positive electrode 9, an intermediate medium 10 and an electrode negative electrode 11. The intermediate medium 10 is sandwiched between the electrode positive electrode 9 and the electrode negative electrode 11. The dielectric barrier discharge technology is used to generate non-thermal plasma by applying a high-frequency or high-voltage AC voltage between the two electrodes. One or more layers of dielectric materials, such as glass, ceramic or quartz, are sandwiched between the electrodes. These dielectrics block the direct electrical contact between the electrodes. When the applied voltage changes and the electric field strength is sufficient to excite and ionize the molecules and atoms in the gas, the free electrons are accelerated and collide with the gas molecules, which in turn triggers the ionization of the molecules and produces more electrons and ions. This is an ionization chain reaction process.

[0053] When a gas breaks down locally, a tiny discharge channel, or microdischarge, is formed. However, due to the presence of dielectric materials, the duration of each microdischarge is very short, usually between nanoseconds and microseconds. Electrons quickly accumulate on the surface of the dielectric to form local charges, which weaken the electric field and terminate the discharge. This short microdischarge process is distributed in a multi-point, random manner throughout the discharge area, ensuring the uniformity and stability of the discharge. As the AC voltage changes periodically, the electric field also changes, and the discharge process is repeated to form new discharge channels, thereby continuously generating plasma. The presence of dielectric materials prevents the formation of a continuous arc and avoids the risk of overheating and material damage.

[0054] Changing the conductivity of the plate can profoundly affect the electric field distribution, electron density and electron temperature inside it, which play a key role in the chemical reactions in the plasma. Plates with high conductivity can produce stronger electric field distribution, allowing free electrons to obtain higher kinetic energy in the electric field. When these high-energy electrons collide with gas molecules, they will excite or ionize these molecules to generate more ions and free radicals. These active species are the core force driving chemical reactions in plasma.

[0055] In addition, the increase in conductivity will also lead to an increase in electron density, which means that the number of free electrons in the plasma will increase. The frequent collisions between these electrons and gas molecules will increase the reaction rate and enrich the types of reaction products. At the same time, the conductivity of the plate will also affect the electron temperature of the plasma, that is, the average energy of free electrons. A higher electron temperature can make more gas molecules reach an excited or ionized state, thereby promoting high-energy chemical reactions.

[0056] The embodiments of the present invention can precisely control the electric field strength, electron density and electron temperature by adjusting the conductivity of the electrode plate, thereby selecting a specific chemical reaction path and generating the desired product. This method provides greater flexibility for the application of plasma technology. By adjusting the conductivity of the electrode plate, a killing path suitable for specific pathogens can be selected to avoid overheating or damage to the surface of the sterilized object, which is particularly suitable for efficient disinfection of medical instruments and sensitive surfaces.

[0057] There are no specific requirements for the size and shape of the electrode positive electrode 9, the intermediate medium 10 and the electrode negative electrode 11. In the embodiment of the present invention, the air is ionized by the dielectric barrier discharge technology, so that the air near the electrode negative electrode 11 has plasma activity, which plays a role in sterilization and disinfection. The electrode positive electrode 9, the electrode negative electrode 11 and the intermediate medium 10 are not necessarily circular, and in this embodiment, the overall structure is circular.

[0058] like Figure 4As shown, the positive electrode 9, the intermediate medium 10 and the negative electrode 11 have overlapping areas.

[0059] Embodiment 2, A method for using a product-controllable plasma generating device comprises the following steps: S1, device initialization: Fill the water tank 4 with water, move the upper piston 8 to the highest position, and calibrate the current position (make sure the water level in the water tank 4 is higher than the pipe 12). This is a key step to ensure the accuracy of subsequent volume measurements.

[0060] S2, after completing the initialization, the device will present two main states during normal operation: water injection discharge and rebound water replenishment.

[0061] Water injection discharge: before pressing the upper piston 8, the water tank 4 is connected to the atmosphere through the air valve 2 so that the piston cylinder 3 is filled with water; the upper piston 8 is pressed, and the closing plug 14 fixed thereto closes the air valve 2 so that the water tank 4 is not connected to the atmosphere. Since water is extremely difficult to compress, the amount of water pushed will be equal to the injection amount. The downward movement distance of the upper piston 8 is equal to the descending distance of the piston in the opening and closing device 5. After descending, the opening and closing device 5 is in an open state, and water flows into the water distribution pipe 6, and then penetrates into the electrode negative electrode 11 through the capillary water tube 7; start the dielectric barrier discharge, and the corresponding products obtained are different according to the different injection amounts of water.

[0062] Rebound water replenishment: After the discharge treatment is completed, the upper piston 8 is released from the pressure and reset (returns to the initial height); during the rebound process, a certain volume of water flows out (here, the certain volume is the product of the cross-sectional area of ​​the piston cylinder 3 and the descending distance), and the piston in the opening and closing device 5 will be re-up, and the opening and closing device 5 will be closed. At this time, the air valve 2 is opened again, the water tank 4 is connected to the atmosphere, and the water in the water tank 4 is sucked into the piston cylinder 3, so that the piston cylinder 3 is filled with water, and the device returns to the initial position, waiting to enter the next cycle. Pressing again will repeat the above process.

[0063] Embodiment 3, like Figure 5-7 As shown, the product of Example 1 is controllable. The plasma generator is used for disinfection of medical instruments and sensitive surfaces. Specifically, the plasma generator is installed on the main body of the brush, and the push-type trigger is matched with the pet combing device. The comb teeth 19 of the brush are not directly connected to the capillary water tube 7. The capillary water tube 7 is fixed to the groove of the negative electrode 11, and the comb teeth 19 are also fixed to the groove of the negative electrode 11. The specific structure of the comb teeth 19 is as follows: Figure 5As shown, the air is ionized on the surface of the negative electrode 11 to generate plasma products, which are then distributed at the root of the comb teeth 19, output through the capillaries on the comb teeth 19, and attached to the pet's hair. The comb teeth 19 are more used to spread the pet's hair. By pressing the upper piston 8 to different degrees, a specific chemical or physical reaction is achieved to generate an activated product with a bactericidal effect to kill different bacteria and pathogens attached to the pet's hair.

[0064] The embodiments of the present invention are not limited to the above-mentioned bacteria and pathogens, but can also be extended to other types of microorganisms, demonstrating its wide adaptability and potential applications. In this way, the five most common and most numerous pathogens on pet hair can be killed to meet the most basic needs of pet owners for pet skin hygiene and health.

[0065] In the field of pet care, cleaning and caring for pet hair is an important link. Common pet brushes on the market are mainly used to remove dust, impurities and shed hair from pet hair. However, ordinary brushes cannot achieve a sterilization function, which to a certain extent limits their application effect in pet care. Although plasma technology has been widely used in the field of sterilization and disinfection, the existing plasma generator structure is not suitable for direct use of pet brushes. The embodiments of the present invention control the plasma generating device to produce different products, thereby achieving different application effects to cope with different needs. Different products can be produced to meet the needs of pet brushes and achieve efficient and safe sterilization functions.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A product-controllable plasma generating device, comprising a dielectric barrier discharge structure, characterized in that: The negative electrode (11) of the dielectric barrier discharge structure is made of a water-absorbing material; A capillary water tube (7) is provided in the negative electrode (11), and the capillary water tube (7) is connected to the water outlet of the piston cylinder (3). An upper piston (8) is installed at the upper end of the piston cylinder (3). A water tank (4) is provided at a position higher than the maximum limit height of the upper piston (8). The water tank (4) is annularly arranged around the piston cylinder (3). The bottom of the water tank (4) is connected to the piston cylinder (3) through a pipe (12). Before the upper piston (8) is pressed, the water tank (4) is connected to the atmosphere through the air valve (2), and the piston cylinder (3) is filled with water. When the upper piston (8) is pressed, the air valve (2) is closed, and a certain amount of water flows to the capillary water tube (7), and then evenly penetrates into the negative electrode (11). The outflow of water is linearly related to the downward movement distance of the upper piston (8).

2. A product-controllable plasma generating device according to claim 1, characterized in that: The water outlet of the piston cylinder (3) is annular and is located below the pipe (12); an opening and closing device (5) is provided at the bottom of the piston cylinder (3), the opening and closing device (5) comprising a piston and a spring, a sealing gasket is provided at the edge of the piston head of the piston, and a spring is provided between the piston head and the inner bottom wall of the piston cylinder (3); when the upper piston (8) is pressed down, the water in the piston cylinder (3) pushes the piston head of the opening and closing device (5) downward, the spring is compressed, the water outlet of the piston cylinder (3) is opened, and after the water flows out, the spring recovers its deformation and pushes the piston head to seal the water outlet of the piston cylinder (3); after the air valve (2) is opened, due to the principle of communicating vessels, the water in the water tank (4) enters the piston cylinder (3), and the piston cylinder (3) is filled with water.

3. The product-controllable plasma generating device according to claim 1, characterized in that: The electrode cathode (11) is provided with grooves distributed in a star-shaped pattern, and the capillary water tube (7) is fixed in the grooves.

4. A product-controllable plasma generating device according to claim 3, characterized in that: The water distribution pipe (6) is distributed around the piston cylinder (3) in a scattered shape. The side of the water distribution pipe (6) away from the piston cylinder (3) is lower than the side close to the piston cylinder (3), forming a slope. The side of the water distribution pipe (6) close to the piston cylinder (3) is located at the water outlet of the piston cylinder (3). The side of the water distribution pipe (6) away from the piston cylinder (3) is connected to the capillary water pipe (7) via a vertical pipe (13), so that the water flowing out of the piston cylinder (3) is evenly distributed to the capillary water pipes (7) distributed in a star-shaped manner.

5. The product-controllable plasma generating device according to claim 1, characterized in that: The port of the air valve (2) is provided with a closing plug (14), which is fixedly connected to the upper piston (8), and a supporting spring is provided between the upper piston (8) and the outer wall of the piston cylinder (3); when the upper piston (8) is pressed downward to move downward, the closing plug (14) moves downward at the same time, closing the air valve (2), and the supporting spring is compressed; when the upper piston (8) is not pressed downward, the supporting spring recovers its deformation, driving the upper piston (8) and the closing plug (14) to return to their original position, and the air valve (2) opens.

6. The product-controllable plasma generating device according to claim 1, characterized in that: The top of the upper piston (8) is connected to the trigger device (1) and is used to quantitatively press the upper piston (8) downward.

7. A product-controllable plasma generating device according to claim 6, characterized in that: The lower cylindrical body of the trigger device (1) is connected to the top of the upper piston (8) via a bearing and can rotate coaxially relative to the upper piston (8); a radially extending limit pin (16) is provided on the side wall of the lower cylindrical body of the trigger device (1); a limit slot (17) is provided below the limit pin (16); the limit slot (17) is fixedly connected to the piston cylinder (3); the limit slot (17) is provided with a plurality of stepped structures with decreasing heights along the circumferential direction, each step corresponding to a gear position; when the limit pin (16) rotates to different steps, the downward movement distance of the trigger device (1) is different; each time the limit pin (16) rotates to a certain fixed step, the downward movement distance of the trigger device (1) remains unchanged, thereby ensuring that the water output is accurate and consistent.

8. The product-controllable plasma generating device according to claim 1, characterized in that: The dielectric barrier discharge structure further comprises an electrode positive electrode (9) and an intermediate medium (10), wherein the intermediate medium (10) is sandwiched between the electrode positive electrode (9) and the electrode negative electrode (11).

9. The method for using the product-controllable plasma generating device according to claim 1, characterized in that: The following steps are involved: S1, device initialization: fill the water tank (4) with water, and move the upper piston (8) to the highest position to ensure that the water level in the water tank (4) is higher than the pipe (12); S2, operation process of the device: Water injection discharge: before pressing the upper piston (8), the water tank (4) is connected to the atmosphere through the air valve (2) so that the piston cylinder (3) is filled with water; when the upper piston (8) is pressed, the air valve (2) is closed, and a certain amount of water flows to the capillary water tube (7), and the outflow of water corresponds to the downward movement distance of the upper piston (8). The capillary water tube (7) evenly infiltrates the water into the negative electrode (11) through a plurality of evenly distributed capillary pores; dielectric barrier discharge is started, and corresponding products are obtained according to the amount of water injected; Rebound water replenishment: After the discharge treatment is completed, the pressure on the upper piston (8) is released and reset; the water outlet of the piston cylinder (3) is closed, the air valve (2) is opened, and the water in the water tank (4) enters the piston cylinder (3), so that the piston cylinder (3) is filled with water, and the device returns to the initial position, waiting to enter the next cycle.

10. Use of a product-controllable plasma generator as claimed in claim 1 in the disinfection of medical instruments and sensitive surfaces.

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