A plasma aerosol generating device and method

Abstract

The application discloses a kind of plasma smoke generating device and method, generating device includes: plasma generating module, for generating plasma gas;Smoke generating module, for heating smoke generating agent to generate smoke;Water mist supply module, for the micron-sized mist drop formed after water ultrasonic atomization respectively sent to smoke generating module and plasma generating module;High-voltage energizing module, for making the micron-sized mist drop in smoke generating module and the micron-sized mist drop in plasma generating module charge opposite electric nature, and then make the electric nature of smoke and plasma gas opposite;Emission module, for the smoke and plasma gas of proportion after mixing are ejected plasma smoke.The application makes that plasma can be closely combined with smoke, weaken plasma component decomposition speed;While being able to control the final jet distance, shielding intensity and coverage area of plasma smoke, shorten smoke arrangement time, improve signal weakening efficiency.

Description

Technical Field

[0001] This invention belongs to the field of plasma generation technology and relates to a plasma smoke generating device and method. Background Technology

[0002] Plasma is a special electromagnetic medium that interacts with electromagnetic waves in complex ways: In a plasma layer, when the frequency of the incident electromagnetic wave is higher than the cutoff frequency, it can propagate into the plasma, but its energy is absorbed and attenuates during propagation. When the frequency of the incident electromagnetic wave is lower than the cutoff frequency, the electromagnetic wave usually cannot enter the plasma layer and undergoes total internal reflection at its surface. Simultaneously, the plasma acts as an electromagnetic wave reflector, interfering with the electromagnetic wave and causing it to bend its return path. This means that plasma can act as a signal shield.

[0003] Existing smoke generators only obscure visibility and are ineffective at shielding electromagnetic detection equipment such as radar. Combining plasma with smoke to create a signal-weakening smoke system could potentially achieve good electromagnetic shielding. However, plasma dissipates quickly and has a very short lifespan, far shorter than smoke, limiting the widespread use of ordinary plasma smoke systems due to its extremely short signal shielding time.

[0004] To address the above problems, this invention aims to provide a novel plasma smoke generator and method that efficiently combines smoke and plasma to form a smoke that weakens signals and effectively counters radar detection. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a plasma smoke generator that enables the plasma and smoke to bind tightly together, thereby reducing the rate of plasma component decomposition. Simultaneously, it allows control over the final spray distance, shielding strength, and coverage area of ​​the plasma smoke, shortening the smoke deployment time and improving signal attenuation efficiency.

[0006] Another object of the present invention is to provide a method of using a plasma smoke generator.

[0007] The technical solution adopted in this invention is a plasma smoke generating device, including a plasma generating module for generating plasma gas, and further comprising:

[0008] The smoke generating module is used to heat the smoke generating agent to generate smoke;

[0009] The water mist supply module is used to deliver the micron-sized droplets formed by ultrasonic atomization of water to the smoke generation module and the plasma generation module, respectively.

[0010] The high-voltage charging module is used to make the micron-sized droplets in the smoke generation module and the micron-sized droplets in the plasma generation module have opposite charges, thereby making the smoke and plasma gases have opposite charges.

[0011] The emission module is used to mix smoke with plasma gas of opposite electrical polarity in a certain proportion and then eject plasma smoke.

[0012] Furthermore, the smoke generating module includes:

[0013] A smoke generator storage container is used to store smoke generators.

[0014] Heating wire, used to heat the smoke generator in the smoke generator storage cylinder to generate smoke;

[0015] A smoke storage device is used to store the generated smoke. A smoke solenoid valve and a smoke pump are installed at the connection between the smoke storage device and the emission module to control the volume of negatively charged smoke entering the emission module. A vent is provided at the end of the smoke storage device away from the smoke pump to balance the air pressure inside the cylinder.

[0016] A fan is installed at the connection between the smoke generator storage cylinder and the smoke storage device, and when it rotates, it drives the smoke into the smoke storage device.

[0017] Furthermore, the water mist supply module includes a water pump for pumping water from the water tank into a three-way pipe, the other two ports of which are connected to a smoke water supply pipe and a plasma water supply pipe, respectively.

[0018] The plasma water supply pipe is connected to the plasma generating module;

[0019] The smoke supply pipe is connected to the smoke generation module;

[0020] The plasma water supply pipe and the smoke water supply pipe are respectively equipped with plasma atomizing plates and smoke atomizing plates at their ends, which are used to ultrasonically atomize the water fed into the plasma generating module and the smoke generating module to form micron-sized droplets.

[0021] Furthermore, the plasma generating module includes:

[0022] A plasma generator is used to generate a plasma jet plume. The plasma generator includes a blocking medium, which is a quartz tube. The upper end of the quartz tube is connected to a plasma gas pump to provide a plasma gas connection channel. A ground electrode is tightly fitted to the outer periphery of the quartz tube, and a high-voltage electrode is installed in the center of the quartz tube.

[0023] A plasma solenoid valve is located at the connection between the plasma generator and the emission module. It works in conjunction with a plasma gas pump to control the volume of positively charged plasma gas entering the emission module.

[0024] Furthermore, the high-voltage charging module includes:

[0025] A negative high-voltage electrode, which is located inside the smoke storage device of the smoke generation module;

[0026] The negative high-voltage ground electrode is ring-shaped and tightly attached to the outer periphery of the smoke storage device.

[0027] A high-voltage electrode is located in the center of the blocking medium of the plasma generation module;

[0028] Among them, the negative high voltage ground electrode and the negative high voltage electrode work together to give the micron-sized droplets in the smoke storage device a negative charge. The micron-sized droplets participate in the glycerin atomization process, giving the smoke negative high voltage energy and making the smoke negatively charged.

[0029] Micron-sized droplets within the plasma generation module carry positive charges under the influence of high-voltage electrodes. These droplets participate in the plasma discharge process, causing the plasma gas to become positively charged.

[0030] Furthermore, the launching module also includes an auxiliary device for ejecting positively charged auxiliary gas around the nozzle of the launching module and distributing it around the plasma smoke; the amount of charge carried by the auxiliary gas is the same as the amount of charge carried by the smoke, and is used to help enhance the axial extension or radial diffusion of the plasma smoke jet.

[0031] Furthermore, the transmitting module includes:

[0032] The launching device has a conical launching end and is connected to the output ends of the plasma generating module and the smoke generating module, respectively.

[0033] A solenoid valve for launching, which is installed at the nozzle of the conical tube;

[0034] A pressure sensor, which is installed inside the launching device, is used to detect the internal air pressure of the launching device;

[0035] The pressure sensor and the solenoid valve are connected to the control module and are used to control the opening and closing of the solenoid valve according to the internal air pressure of the launching device.

[0036] Furthermore, the auxiliary device includes:

[0037] An auxiliary air chamber is located inside the barrel wall of the conical nozzle of the launching module and is an annular hollow space. The auxiliary air chamber is connected to an auxiliary air pump and an auxiliary pressure sensor is installed inside the auxiliary air chamber to detect the air pressure inside the auxiliary air chamber.

[0038] The number of air passages is even, and they are arranged inside the barrel wall along a conical generatrix, connecting the auxiliary air chamber and the outside of the nozzle of the launching module. An auxiliary solenoid valve is installed inside the air passage.

[0039] An energy-charging device is used to partially ionize the auxiliary gas, giving it a positive charge, the amount of which is the same as the charge carried by the smoke.

[0040] The auxiliary pressure sensor and the auxiliary solenoid valve are connected to the control module. The auxiliary solenoid valve closes when the air pressure in the auxiliary air chamber reaches the set value. The auxiliary solenoid valve and the transmitting solenoid valve open simultaneously.

[0041] Furthermore, the volume percentage of negatively charged smoke inside the emission module is no less than 45-50%, and the volume percentage of positively charged plasma gas is no less than 25-30%.

[0042] A method of using a plasma smoke generator includes the following steps:

[0043] S1, based on the required spray distance and diffusion area, determine the working voltage of the plasma generation module, the working voltage of the high-voltage charging module, the gas pressure inside the emission module, the initial flow rate inside the emission module, the plasma gas ratio, and the smoke gas ratio, and start the plasma generation module, smoke generation module, and water mist supply module to work synchronously.

[0044] S2, the water mist supply module delivers the micron-sized droplets formed by ultrasonic atomization of water to the smoke generation module and the plasma generation module respectively;

[0045] The high-voltage charging module causes the micron-sized droplets in the smoke generation module to carry a negative charge, thereby making the smoke negatively charged; it also causes the micron-sized droplets in the plasma generation module to carry a positive charge, thereby making the plasma gas positively charged.

[0046] The smoke generating module produces smoke and sends the negatively charged smoke into the emission module;

[0047] The plasma generating module produces plasma gas and sends the positively charged plasma gas into the launching module;

[0048] S3, the emission module mixes negatively charged smoke with positively charged plasma gas in a certain proportion and then ejects plasma smoke.

[0049] The beneficial effects of this invention are:

[0050] 1. Neither plasma gas nor smoke gas can be charged. This invention adds water mist to charge the two gases with positive and negative pressure respectively, so that the plasma gas and smoke are tightly combined, thus weakening the plasma decomposition rate.

[0051] 2. This invention controls the charge of plasma smoke by controlling the voltage, and further controls the final spray distance, shielding strength and coverage area of ​​plasma smoke after the auxiliary gas is charged.

[0052] 3. This invention, through coordinated control of air pressure, airflow, and spray components, can precisely adjust the smoke emission distance, enabling the smoke to spread rapidly and over a large area in a designated region within a short time, shortening the smoke deployment time, improving signal attenuation efficiency, and reducing the collision and decomposition of smoke with air, thereby increasing the shielding time. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the external structure of an embodiment of the present invention.

[0055] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present invention.

[0056] Figure 3 This is a schematic diagram of the internal structure of the smoke generating module in an embodiment of the present invention.

[0057] Figure 4 This is a schematic diagram of the water mist supply module structure in an embodiment of the present invention.

[0058] Figure 5 This is a schematic diagram of the plasma generation module and emission module in an embodiment of the present invention.

[0059] In the diagram: 1. Water mist supply module; 2. Plasma generation module; 3. Emission module; 4. Smoke generation module; 5. Smoke storage cylinder; 6. Negative high voltage electrode; 7. Negative high voltage ground electrode; 8. Smoke solenoid valve; 9. Smoke air pump; 10. Smoke storage device; 11. Fan; 12. Heating wire; 13. Smoke generator storage cylinder; 14. Vent; 15. Water pump; 16. T-connector; 17. Plasma water supply pipe; 18. Plasma atomizing plate; 19. Smoke water supply pipe; 20. Smoke atomizing plate; 21. Plasma generator; 22. Plasma solenoid valve; 23. Plasma air pump; 24. High voltage electrode; 25. Barrier medium; 26. Ground electrode; 27. Emission device; 28. Auxiliary device; 29. ​​Auxiliary air pump; 30. Auxiliary air chamber; 31. Auxiliary pressure sensor; 32. Auxiliary solenoid valve; 33. Emission solenoid valve; 34. Pressure sensor; 35. Charging electrode; 36. Charging ground electrode. Detailed Implementation

[0060] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0061] Example 1,

[0062] A plasma smoke generator that weakens signals, such as Figure 1-2 As shown, it includes a smoke generation module 4, a plasma generation module 2, a water mist supply module 1, an emission module 3, a high-voltage charging module, a control module, a power supply, etc.

[0063] like Figure 3 As shown, the smoke generating module 4 includes a smoke generating agent storage cylinder 13, a smoke storage device 10, a heating wire 12, and a fan 11. The smoke generating agent storage cylinder 13 is a cylinder with an open top, which can hold approximately 1L of smoke generating agent. It is located below the smoke storage device 10 and is connected to the smoke storage device 10 by threads. The heating wire 12 is a spiral resistance wire located inside the smoke generating agent storage cylinder 13. The lower end of the heating wire 12 passes through the smoke generating agent storage cylinder 13 and is connected to an external power source. When powered on, the heating wire 12 heats the smoke generating agent inside the cylinder to generate smoke. The fan 11 is located at the connection between the smoke generating agent storage cylinder 13 and the smoke storage device 10. When it rotates, it can drive the smoke into the smoke storage device 10.

[0064] In this embodiment, the smoke generator is pure glycerin, and the glycerin is heated to 290℃-350℃. Glycerin begins to evaporate above 290℃, but the temperature should not be too high. Above 350℃, the temperature is too high (above 80℃) when the glycerin reaches the emission device and mixes with the plasma active ingredients, which will accelerate the decomposition of the active ingredients. Glycerin (glycerol) will decompose and produce a large amount of formaldehyde when heated in an anaerobic environment of 300℃-400℃. In this embodiment of the invention, in an aerobic environment of 290℃-350℃ (with pores connecting to the outside, not an anaerobic environment), only a very small amount of decomposition into formaldehyde (not exceeding 2% of the total mass) will occur. After the smoke is generated and sprayed out, the formaldehyde concentration is extremely low, and the impact on the external environment is very small.

[0065] The smoke storage device 10 includes a smoke solenoid valve 8, a smoke pump 9, and a smoke storage cylinder 5. The smoke storage cylinder 5 is a cylindrical storage container. The bottom of the smoke storage cylinder 5 is connected to the smoke generating agent storage cylinder 13 by a thread. The right end of the smoke storage cylinder 5 is connected to the housing of the launching device 27, and the left end of the smoke storage cylinder 5 is connected to the water mist supply module 1. The left end of the smoke storage cylinder 5 has circumferentially arranged vent holes 14 to balance the air pressure inside the cylinder, so that the smoke is brought into the launching device 27 to the maximum extent. The smoke solenoid valve 8 is located at the connection between the smoke storage cylinder 5 and the housing of the launching device 27. It can be opened and closed under the control of the control module to complete the connection and disconnection between the smoke storage device 10 and the launching device 27 (i.e., the smoke generating module 4 and the launching module 3). The smoke pump 9 is located in the right end of the smoke storage cylinder 5, adjacent to the smoke solenoid valve 8. When the smoke solenoid valve 8 is open, the smoke pump 9 works to pump the smoke into the launching device 27. The smoke pump 9 can effectively prevent the smoke in the launching device 27 from flowing back.

[0066] The diameter of the vent 14 is less than 0.1 mm. When the smoke pump 9 is not started, the smoke in the smoke storage cylinder 5 can be considered to not overflow from the vent 14. When the smoke pump 9 is started, the outside gas enters from the vent 14 under the drive of the smoke pump 9.

[0067] Example 2,

[0068] like Figure 4As shown, the water mist supply module 1 includes a water pump 15, a three-way pipe 16, a smoke water supply pipe 19, a plasma water supply pipe 17, a smoke atomizing plate 20, and a plasma atomizing plate 18. The water pump 15 is directly connected to the water tank and can pump water into the device. The three-way pipe 16 is connected to the water pump 15, the smoke water supply pipe 19, and the plasma water supply pipe 17 respectively. Water can flow through the three-way pipe 16 into the plasma water supply pipe 17 and the smoke water supply pipe 19. The plasma water supply pipe 17 is connected to the blocking medium (quartz tube) 25 of the plasma generating module 2. The smoke water supply pipe 19 is connected to the smoke storage cylinder 5 of the smoke generating module 4. The plasma atomizing plate 18 and the smoke atomizing plate 20 are located at the ends of the two water supply pipes respectively. Under the control of the control module, water can be ultrasonically atomized and then enter the quartz tube and the smoke storage cylinder 5.

[0069] The plasma atomizing plate 18 and the smoke atomizing plate 20 have the same structure. Both are ultrasonic atomizing plates, and the atomizing object is water. The plasma atomizing plate 18 sprays water mist into the plasma gas, and the smoke atomizing plate 20 sprays water mist into the smoke gas, both producing water mist.

[0070] Micron-sized droplets formed by ultrasonic atomization enter the smoke generation module 4 and the plasma generation module 2 (hereinafter referred to as the charging process). The droplets enter the smoke generation module 4 and participate in the glycerol atomization process, increasing the fluidity of the glycerol smoke, preventing the smoke from condensing upon cooling, and assisting in atomization; at the same time, the smoke generator (i.e., the smoke storage cylinder 5) is equipped with a negative high-voltage electrode 6. After the water mist enters, it is charged by the negative high voltage (pure glycerol is a non-conductor and cannot be charged). After mixing with the glycerol smoke, the final smoke is negatively charged.

[0071] Example 3,

[0072] like Figure 5 As shown, the plasma generating module 2 includes a plasma generating device 21 and a plasma solenoid valve 22, located at the upper end of the launching module 3; the plasma generating device 21 is located at the upper end of the launching device 27 and is directly connected to the launching device 27, which can send plasma gas into the launching device 27; the plasma solenoid valve 22 is located at the connection between the plasma generating device 21 and the launching device 27, which can control the plasma gas to enter the launching device 27.

[0073] The plasma generating device 21 includes a plasma pump 23, a high-voltage electrode 24, a ground electrode 26, and a blocking medium 25. The blocking medium 25 is a quartz tube, the upper end of which is connected to the plasma pump 23 to serve as a plasma gas connection channel. The ground electrode 26 is a copper ring that fits tightly against the outer circumference of the quartz tube. The high-voltage electrode 24 is an iron probe, the upper end of which is fixed to the plasma pump 23 and located in the center of the quartz tube. When a high voltage is applied to the high-voltage electrode 24, the plasma pump 23 starts to work, and at this time the quartz tube can generate a plasma jet plume and generate a large amount of plasma gas.

[0074] The high-voltage charging module includes a negative high-voltage electrode 6, a negative high-voltage ground electrode 7, and a high-voltage electrode 24. The negative high-voltage electrode 6 is an iron needle located inside the smoke storage cylinder 5. The negative high-voltage ground electrode 7 is ring-shaped and tightly attached to the outer periphery of the smoke storage cylinder 5. The negative high-voltage ground electrode 7 and the negative high-voltage electrode 6 work together to give the micron-sized droplets in the smoke storage device 10 a negative charge. The micron-sized droplets participate in the glycerin atomization process, giving the smoke negative high-voltage charging and making the smoke negatively charged.

[0075] Micron-sized droplets in plasma generation module 2 carry positive charges under the action of high-voltage electrode 24. The micron-sized droplets participate in the plasma discharge process, making the plasma gas positively charged.

[0076] Example 4,

[0077] The launching module 3 includes a launching device 27, a launching solenoid valve 33, and a pressure sensor 34. The launching device 27 has a cylindrical shape on the left and a conical shape on the right. The launching solenoid valve 33 is installed at the head of the conical cylinder and is connected to the control module. The pressure sensor 34 is located on the inner wall of the cylindrical part of the launching device 27 and is directly connected to the control module. It can detect the internal air pressure of the launching device 27. This allows the negatively charged smoke and the positively charged plasma gas to be mixed in proportion and then ejected as plasma smoke.

[0078] Example 5,

[0079] The launching module 3 also includes an auxiliary device 28, which is used to spray positively charged auxiliary gas after ionization around the nozzle of the launching module 3 and distribute it around the plasma smoke; the amount of charge carried by the auxiliary gas is the same as the amount of charge carried by the smoke, and is used to help enhance the axial extension or radial diffusion of the plasma smoke jet.

[0080] In some embodiments, the auxiliary device 28 includes an auxiliary air pump 29, an auxiliary pressure sensor 31, an auxiliary air chamber 30, an auxiliary solenoid valve 32, a charging electrode 35, and a charging ground electrode 36. The auxiliary air chamber 30 is located inside the wall of the conical cylinder and is an annular hollow space. Multiple air channels are evenly distributed around the conical cylinder of the launching device 27. The air channels are used to guide the auxiliary air pump 29 to spray gas. Eight air channels are used to make the sprayed gas more evenly distributed around the circumference. The number is even to ensure that the gas is evenly distributed around the circumference. In this embodiment, the interior is connected to the exterior through eight air channels.

[0081] An auxiliary pressure sensor 31 is located inside the auxiliary gas chamber 30 and connected to the control module, which can detect the gas pressure inside the auxiliary gas chamber 30. An auxiliary solenoid valve 32 is located inside the air passage and connected to the control module. When closed, it can pressurize the auxiliary gas chamber 30, and when opened, it can release gas from the auxiliary gas chamber 30. An auxiliary air pump 29 is located above the auxiliary gas chamber 30 and is directly connected to the auxiliary gas chamber 30, which can pressurize the auxiliary gas chamber 30. The charging electrode 35 is an iron metal probe located inside the auxiliary gas chamber 30 and is directly connected to the high-voltage power supply. The charging ground electrode 36 is located outside the auxiliary gas chamber 30. The auxiliary gas chamber 30 is made of insulating material (to prevent breakdown during the charging process). The charging ground electrode 36, the charging electrode 35, and the auxiliary gas chamber 30 are combined to form a charging device, which can partially ionize the auxiliary gas and carry a positive charge.

[0082] The plasma smoke ejection distance is related to the gas flow rate pumped into the transmitter 27 by the plasma pump 23 and the smoke pump 9 (i.e., it is related to the gas ratio inside the transmitter 27; more smoke results in a shorter ejection distance, and more plasma gas results in a longer ejection distance). The specific ratio and ejection distance relationship are shown in Table 1. Through experiments and simulations, to avoid affecting smoke and signal shielding, the volume ratio of smoke gas should be no less than 45-50%, and the volume ratio of plasma gas should be no less than 25-30%. The ejection distance here is the maximum ejection distance. The ratio of plasma gas to smoke gas is determined by the gas flow rate of the plasma pump 23 and the smoke pump 9. The user can adjust the gas flow rate of the smoke pump 9 and the plasma pump 23 to control the ratio of plasma gas to smoke gas inside the transmitter module 3. A signal source is placed at the left end of the ejected plasma smoke, and a receiving device is set at the right end of the plasma smoke to test the attenuation of electromagnetic waves.

[0083] Table 1. Relationship between air pressure, plasma gas ratio, smoke gas ratio, jet distance, and diffusion area.

[0084]

[0085]

[0086] The air pressure in Table 1 refers to the air pressure inside the transmitting device 27 measured by the pressure sensor 34.

[0087] The droplets also participate in the plasma discharge process. A voltage is applied to the high-voltage electrode 24, allowing the water mist to carry a positive charge. After mixing with the plasma gas, the resulting plasma droplets become charged. When the plasma gas and smoke gas enter the emission device 27, the two phases carry positive and negative charges respectively, attracting each other inside the device, resulting in a more uniform mixing of plasma and smoke and a superior shielding effect. The amount of positive and negative charges carried is related to the voltage and duration of the high-voltage electrode 24. Since the plasma gas and smoke gas take the same amount of time to charge, the amount of positive and negative charges is directly related to the voltage. Because the charging process involves two-phase flow, electromagnetic fields, and other multi-physics couplings, the situation is complex and difficult to obtain directly through calculation. In this embodiment, the relationship between charge and voltage is determined through COMSOL multiphysics simulation, as shown in Table 2 (only one voltage is shown; different voltages produce different effects, and there may be too many cases to list completely).

[0088] After being charged by high voltage, the auxiliary gas can assist the plasma smoke in jetting and diffusion. Since the auxiliary gas is positively charged, in order to achieve a more stable control effect, the amount of charge on the auxiliary gas is the same as that on the smoke; otherwise, it will cause the auxiliary gas and smoke to mix and turbulent, which is not conducive to the jetting process.

[0089] The charge of the plasma smoke finally ejected by the launching module 3 is shown in Table 2. When the plasma smoke is positively charged, the auxiliary gas, being positively charged, carries the same charge as the smoke gas, thus constraining the plasma smoke and increasing the ejection distance (this increase is a further increase on the ejection distance in Example 5). When the plasma smoke is negatively charged, the auxiliary gas attracts the smoke gas, causing the smoke to diffuse during ejection and increasing the coverage area. Since the auxiliary gas ejection distance is 10-20m, this phase mainly focuses on the ejection distance of approximately 0-15m, as shown in Table 2 for the specific correspondence.

[0090] Table 2 Relationship between voltage and the increase or decrease of spray distance and diffusion area

[0091]

[0092] Example 6,

[0093] A method of using a plasma smoke generator includes the following steps:

[0094] S1, the user determines the control parameters according to the required spray distance and diffusion area: the initial flow rate of the launching device 27, the auxiliary gas flow rate, the plasma gas ratio, the smoke gas ratio, the gas pressure in the launching device 27, the plasma gas voltage, the smoke voltage and the auxiliary gas voltage, and then the plasma generating module 2, the smoke generating module 4, the water mist supply module 1 and the auxiliary device 28 start working synchronously.

[0095] S2, the power supply in the plasma generation module 2 supplies power to the high-voltage electrode 24 according to the set voltage, and plasma gas is generated. At the same time, the plasma solenoid valve 22 is opened, and the plasma gas pump 23 starts to work, pumping the plasma gas into the launching device 27.

[0096] The heating wire 12 in the smoke generating module 4 starts working and generates smoke. The fan 11 sends the smoke into the smoke storage device 10. At the same time, the smoke solenoid valve 8 opens and the smoke air pump 9 starts working, drawing the smoke gas into the launching device 27.

[0097] The water mist supply module 1 starts supplying water synchronously. The ultrasonic atomizing plate (i.e., the smoke atomizing plate 20 and the plasma atomizing plate 18) atomizes the water and sends it into the plasma generator 21 and the smoke storage device 10. The water mist is activated by the high-voltage electrode 24 in the plasma generator 21 (i.e., the water mist participates in the plasma discharge process) and mixes with the plasma gas, making the plasma gas carry a positive charge. The water mist is activated by the negative high-voltage electrode 6 in the smoke generator (smoke storage cylinder 5) (i.e., the water mist participates in the glycerin atomization process) and mixes with the smoke gas, making the smoke gas carry a negative charge. The control module controls the auxiliary solenoid valve 32 to close, and the auxiliary air pump 29 starts working, pumping air into the auxiliary air chamber 30.

[0098] S3, the auxiliary pressure sensor 31 monitors the internal air pressure of the auxiliary device 28 in real time, and shuts down the auxiliary air pump 29 after reaching the set value. The pressure sensor 34 in the launching module 3 can monitor the internal air pressure of the launching device 27 in real time. After reaching the set value, the control module controls the plasma air pump 23, plasma solenoid valve 22, smoke air pump 9, and smoke solenoid valve 8 to close. At this time, the control module simultaneously controls the launching solenoid valve 33 and the auxiliary solenoid valve 32 to open, and plasma smoke is emitted, completing the operation.

[0099] The control module is a development system based on the STM32C8T6 chip, which is known in the field. It can receive data from the air pressure sensor; control the solenoid valve switch by controlling the high and low levels of the GPIO pins; and generate PWM to control each air pump, plasma atomizing plate and smoke atomizing plate.

[0100] Example 7,

[0101] By changing the power supply of the high-voltage charging module, i.e., installing a positive high-voltage electrode inside the smoke storage device 10 of the smoke generation module 4, and installing a ring-shaped positive high-voltage ground electrode on the outer periphery of the smoke storage device 10; and installing a negative high-voltage electrode in the center of the blocking medium 25 of the plasma generation module 2; wherein, the positive high-voltage electrode and the positive high-voltage ground electrode cooperate to give the micron-sized droplets in the smoke storage device 10 a positive charge; and the micron-sized droplets in the plasma generation module 2 carry a negative charge under the action of the negative high-voltage electrode; thus, the smoke gas carries a positive charge and the plasma gas carries a negative charge. The rest of the structure is the same as in Examples 1-5, and the usage method is the same as in Example 6; it is feasible. Since the plasma discharge voltage is very high, if a negative high-voltage power supply is used, the requirements for the power supply are higher, the power supply discharge power is greater, and the control difficulty is increased.

[0102] The key to improving the plasma signal shielding time lies in reducing the decomposition of plasma active components. This invention primarily achieves this through: 1. Adding water mist to charge the plasma gas and smoke gas with positive and negative pressure, allowing the plasma gas to bind tightly with the smoke particles, improving binding efficiency and weakening the plasma decomposition rate; 2. Through the coordinated control of air pressure, airflow, and spray components, the smoke can be rapidly dispersed in a designated area within a short time, reducing the decomposition of active components during smoke emission (plasma active components collide with air gases during air jetting, accelerating decomposition; therefore, by using auxiliary gas to surround the plasma smoke circumferentially, collisions and friction with the surrounding air are reduced, extending the jetting distance and thus prolonging the plasma interaction time).

[0103] This invention achieves control over the plasma smoke jet distance, shielding strength, and coverage area by adjusting the voltage to regulate the charge of the plasma smoke, and then coordinating the gas pressure and auxiliary gas. It weakens the decomposition of plasma active components through two means, both of which are based on the characteristics of plasma itself and combine multiple media such as smoke and gas to maximize the plasma shielding time.

[0104] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A plasma smoke generator, comprising a plasma generating module (2) for generating plasma gas, characterized in that, Also includes: The smoke generating module (4) is used to heat the smoke generating agent to generate smoke; The water mist supply module (1) is used to send the micron-sized droplets formed by ultrasonic atomization of water to the smoke generation module (4) and the plasma generation module (2), respectively. The high-voltage charging module is used to make the micron-sized droplets in the smoke generation module (4) and the micron-sized droplets in the plasma generation module (2) have opposite charges, thereby making the smoke and plasma gas have opposite charges. The emission module (3) is used to mix the smoke with opposite electrical properties and the plasma gas in a certain proportion and then eject the plasma smoke; The launching module (3) also includes an auxiliary device (28) for spraying positively charged auxiliary gas around the nozzle of the launching module (3) and distributing it around the plasma smoke; the amount of charge carried by the auxiliary gas is the same as the amount of charge carried by the smoke, and is used to help enhance the axial extension or radial diffusion of the plasma smoke jet. The volume of negatively charged smoke inside the emission module (3) shall be no less than 45-50%, and the volume of positively charged plasma gas shall be no less than 25-30%.

2. The plasma smoke generator according to claim 1, characterized in that, The smoke generating module (4) includes: A smoke generator storage container (13) is used to store smoke generators; Heating wire (12) is used to heat the smoke generator in the smoke generator storage cylinder (13) to generate smoke; A smoke storage device (10) is used to store the generated smoke. A smoke solenoid valve (8) and a smoke pump (9) are installed at the connection between the smoke storage device (10) and the emission module (3) to control the volume of negatively charged smoke entering the emission module (3). A vent (14) is provided at the end of the smoke storage device (10) away from the smoke pump (9) to balance the air pressure inside the cylinder. A fan (11) is installed at the connection between the smoke generator storage cylinder (13) and the smoke storage device (10), and when it rotates, it drives the smoke into the smoke storage device (10).

3. The plasma smoke generator according to claim 1, characterized in that, The water mist supply module (1) includes a water pump (15) for pumping water from the water tank into a three-way pipe (16). The other two ports of the three-way pipe (16) are connected to a smoke water supply pipe (19) and a plasma water supply pipe (17), respectively. The plasma water supply pipe (17) is connected to the plasma generating module (2); The smoke supply pipe (19) is connected to the smoke generation module (4); The plasma water supply pipe (17) and the smoke water supply pipe (19) are respectively equipped with plasma atomizing plates (18) and smoke atomizing plates (20) to ultrasonically atomize the water fed into the plasma generating module (2) and the smoke generating module (4) to form micron-sized droplets.

4. The plasma smoke generator according to claim 1, characterized in that, The plasma generating module (2) includes: A plasma generator (21) is used to generate a plasma jet plume. The plasma generator (21) includes a blocking medium (25), which is a quartz tube. The upper end of the quartz tube is connected to a plasma gas pump (23) to provide a plasma gas connection channel. A ground electrode (26) is tightly fitted around the outer periphery of the quartz tube, and a high-voltage electrode (24) is installed in the center of the quartz tube. Plasma solenoid valve (22) is located at the connection between plasma generator (21) and launch module (3), and works in conjunction with plasma gas pump (23) to control the volume of positively charged plasma gas entering launch module (3).

5. The plasma smoke generator according to claim 1, characterized in that, The high-voltage charging module includes: The negative high voltage electrode (6) is located inside the smoke storage device (10) of the smoke generation module (4); The negative high voltage ground electrode (7) is ring-shaped and closely attached to the outer periphery of the smoke storage device (10); High voltage electrode (24), which is located in the center of the barrier medium (25) of the plasma generation module (2); Among them, the negative high voltage ground electrode (7) and the negative high voltage electrode (6) work together to give the micron-sized droplets in the smoke storage device (10) a negative charge. The micron-sized droplets participate in the glycerin atomization process, giving the smoke negative high voltage energy and making the smoke negatively charged. Micron-sized droplets in the plasma generation module (2) carry positive charges under the action of high-voltage electrode (24). The micron-sized droplets participate in the plasma discharge process, making the plasma gas positively charged.

6. The plasma smoke generator according to claim 1, characterized in that, The transmitting module (3) includes: The launching device (27) has a conical launching end and is connected to the output ends of the plasma generating module (2) and the smoke generating module (4). A launching solenoid valve (33) is installed at the nozzle of the conical tube; Pressure sensor (34) is installed inside the transmitter (27) to detect the air pressure inside the transmitter (27); The pressure sensor (34) and the solenoid valve (33) are connected to the control module and are used to control the opening and closing of the solenoid valve (33) according to the internal air pressure of the launching device (27).

7. The plasma smoke generator according to claim 1, characterized in that, The auxiliary device (28) includes: The auxiliary air chamber (30) is located inside the barrel wall of the conical nozzle of the launching module (3) and is an annular hollow space. The auxiliary air chamber (30) is connected to the auxiliary air pump (29). An auxiliary pressure sensor (31) is installed inside the auxiliary air chamber (30) to detect the air pressure inside the auxiliary air chamber (30). The number of air passages is even, and they are arranged inside the barrel wall along the conical generatrix, connecting the auxiliary air chamber (30) and the outside of the nozzle of the launching module (3). An auxiliary solenoid valve (32) is installed inside the air passage. A charging device is used to partially ionize the auxiliary gas to carry a positive charge, the amount of which is the same as the amount of charge carried by the smoke. Among them, the auxiliary pressure sensor (31) and the auxiliary solenoid valve (32) are connected to the control module respectively. The auxiliary solenoid valve (32) is closed after the air pressure in the auxiliary air chamber (30) reaches the set value; the auxiliary solenoid valve (32) and the launching solenoid valve (33) are opened at the same time.

8. A method of using a plasma smoke generator as described in any one of claims 1-7, characterized in that, Includes the following steps: S1, based on the required spray distance and diffusion area, determine the working voltage of the plasma generation module (2), the working voltage of the high-voltage charging module, the gas pressure inside the emission module (3), the initial flow rate inside the emission module (3), the plasma gas ratio and the smoke gas ratio, and start the plasma generation module (2), the smoke generation module (4) and the water mist supply module (1) to work synchronously. S2, the water mist supply module (1) sends the micron-sized droplets formed by ultrasonic atomization of water to the smoke generation module (4) and the plasma generation module (2) respectively. The high-voltage charging module causes the micron-sized droplets in the smoke generation module (4) to carry a negative charge, thereby making the smoke carry a negative charge; The micron-sized droplets in the plasma generation module (2) are made to carry a positive charge, thereby making the plasma gas carry a positive charge; The smoke generating module (4) generates smoke and sends the negatively charged smoke into the emission module (3); The plasma generating module (2) generates plasma gas and sends the positively charged plasma gas into the launching module (3); S3, the emission module (3) mixes negatively charged smoke with positively charged plasma gas in a certain proportion and then ejects plasma smoke.

Images