Symmetrical hydroxyl radical sterilization and disinfection device, system and control method

Abstract

The application discloses a symmetrical hydroxyl radical sterilization and disinfection device, system and control method, which comprises a shell, an ion generation module is arranged in the shell, a circuit for generating alternating high voltage is arranged in the ion generation module, the alternating voltage acts on multiple groups of discharge tips, two discharge tips in each group of discharge tips periodically exchange discharge, the multiple groups of discharge tips extend out of the shell, multiple air ducts are arranged on the shell, air in the air ducts flows perpendicularly to the discharge tips, a ring-shaped grounding gathering end is arranged at the upper part of each discharge tip, and the ring-shaped grounding gathering end is flush with or higher than the discharge tip; the application can generate high-concentration positive and negative ions, generate high-energy reaction when the positive and negative ions neutralize, damage the structure of microorganisms such as bacteria and viruses, achieve inactivation, and has a good decomposition effect on volatile gases in the air.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sterilization and disinfection devices, in particular to a symmetrical hydroxyl radical sterilization and disinfection device, system and control method. BACKGROUND

[0002] Traditional air purification products mostly use the HEPA filter screen method, which has obvious effect on filtering PM2.5, but this filtering method cannot kill bacteria, viruses, allergens and other microorganisms in the air, and if not replaced in time, it will cause bacterial accumulation and secondary pollution. Hospitals generally use ultraviolet lamps or ozone generators for sterilization and disinfection, but this method is harmful to the human body and cannot achieve dynamic sterilization and disinfection for human-machine coexistence. Therefore, many manufacturers install ion generator devices on air outlets. The existing negative ion generator has the following problems: the single ion generated by the negative ion generator has poor diffusivity in the air, and generally decays by 50% after tens of centimeters, which has little effect on air disinfection in large spaces; the long-term unipolar high-voltage continuous discharge of the plasma ion generator produces ozone that cannot be eliminated, and the cost is high. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a symmetrical hydroxyl radical sterilization and disinfection device, system and control method, which generates high-concentration positive and negative ions through periodic symmetrical discharge of double electric needles, and has better sterilization and disinfection effect.

[0004] The technical scheme of the present application is as follows:

[0005] In the first aspect of the present application, a symmetrical hydroxyl radical sterilization and disinfection device is provided, which comprises a shell, an ion generation module is arranged in the shell, an alternating high-voltage circuit is arranged in the ion generation module, the alternating voltage acts on a plurality of discharge tips, and the two discharge tips in each group of discharge tips periodically exchange discharge; the plurality of discharge tips protrude out of the shell, a plurality of air ducts are arranged on the shell, the air flow in the air duct is perpendicular to the discharge tips, a ring-shaped grounding aggregation end is arranged at the upper part of each discharge tip, and the ring-shaped grounding aggregation end is flush with or higher than the discharge tip.

[0006] In some embodiments of the present application, the alternating high-voltage circuit generated on the ion generation module comprises a power supply circuit, a self-oscillation circuit, a boost rectifier circuit and an electrode needle discharge circuit connected in sequence, and the electrode needle discharge circuit comprises a plurality of discharge tips.

[0007] In some embodiments of the present application, the voltage boosting rectifier circuit comprises a transformer T1, a diode D5 and a diode D6, the same end of the secondary winding of the transformer T1 is connected to the cathode of the diode D5, the anode of the diode D5 is connected to a plurality of discharge tips, respectively, the same end of the secondary winding of the transformer T1 is also connected to the anode of the diode D6, the cathode of the diode D6 is connected to a plurality of discharge tips, respectively, and the different end of the secondary winding of the transformer T1 is connected to the equipotential terminal.

[0008] In some embodiments of the present application, the control circuit adopts an alternating current inversion high-voltage circuit board, the voltage range generated by the alternating current inversion high-voltage circuit board is controlled to be 6.5-7.5kV, and the frequency range is controlled to be 200-220kHz.

[0009] In some embodiments of the present application, the distance between the two discharge tips of each group is 25-30mm.

[0010] In some embodiments of the present application, the distance between the annular grounding gathering terminal and the top of the discharge tip is less than 6mm.

[0011] In the second aspect of the present application, a symmetrical hydroxyl radical sterilization and disinfection system is provided, comprising the symmetrical hydroxyl radical sterilization and disinfection device, further comprising: a power supply, a wind sensor, a microcontroller, the power supply being connected to the wind sensor, the microcontroller and the symmetrical hydroxyl radical sterilization and disinfection device, the wind sensor being connected to the double-way switch and the sterilization and disinfection device in sequence through an operational amplifier, and the microcontroller being connected to the sterilization and disinfection device through the double-way switch.

[0012] In some embodiments of the present application, the power supply comprises an AC 220V alternating current power supply and a DC 12V direct current power supply, and the DC 12V direct current power supply is further connected to a DC-DC converter.

[0013] In the third aspect of the present application, a control method of a symmetrical hydroxyl radical sterilization and disinfection system is provided, comprising the following steps:

[0014] The wind sensor collects the wind speed signal, and the sterilization and disinfection device is turned on or turned off according to the wind speed signal;

[0015] Alternatively, the microcontroller receives a fixed instruction sent by other equipment, and controls the opening and closing of the sterilization and disinfection device;

[0016] At the same time, the state of the sterilization and disinfection device is fed back to the microcontroller in real time, the state of the sterilization and disinfection device comprises a running state, a closed state and a fault state, and the real-time monitoring of the closed sterilization and disinfection device is realized.

[0017] In some embodiments of the present application, the wind sensor controls the sterilization and disinfection device to start when the wind speed is greater than 0.8 m / s.

[0018] The one or more technical solutions of the present application have the following beneficial effects:

[0019] (1) The symmetric hydroxyl radical sterilization and disinfection device provided by the present application generates high-concentration positive and negative ions. On the one hand, high-energy reactions occur when the positive and negative ions neutralize, which can destroy the structure of bacteria, viruses and other microorganisms, achieving inactivation. On the other hand, the free hydroxyl negative ions carried by the ions can directly replace the hydrogen ions in the microorganism structure, inactivating them and not producing toxic and harmful substances. The device can effectively inactivate bacteria, viruses and other microorganisms in the air and has good decomposition effect on volatile gases (formaldehyde, hydrogen sulfide) in the air.

[0020] (2) The symmetric hydroxyl radical sterilization and disinfection device provided by the present application is provided with multiple groups of discharge tips. Each group of discharge tips periodically discharges to generate high-concentration positive and negative ions, achieving better sterilization and disinfection effect. By adjusting the corresponding high-voltage range and making the two discharge tips in each group of discharge tips discharge alternately, long-term unipolar high-voltage continuous discharge is avoided, ozone generation is avoided, and man-machine coexistence dynamic disinfection and purification are achieved.

[0021] (3) The symmetric hydroxyl radical sterilization and disinfection device provided by the present application has simple structure and is convenient to use. It can be directly placed at the air outlet of various application scenes. Under the action of the air outlet, the diffusion efficiency of the positive and negative ions in the air is improved, and the sterilization and disinfection efficiency is improved.

[0022] (4) The symmetric hydroxyl radical sterilization and disinfection device provided by the present application can be combined with external power supply, wind sensor, microcontroller and other devices to form a sterilization and disinfection system, which can realize intelligent control of the sterilization and disinfection device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure diagram of the symmetric hydroxyl radical sterilization and disinfection device of the present application;

[0024] Figure 2 It is an internal circuit diagram of the symmetric hydroxyl radical sterilization and disinfection device of the present application;

[0025] Figure 3 It is a component connection diagram of the symmetric hydroxyl radical sterilization and disinfection system of the present application;

[0026] Figure 4 It is a structure diagram of the AC220V alternating current input circuit of the present application;

[0027] Figure 5This is a structural diagram of the DC12V input circuit of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal circuit of the wind sensor of the present invention;

[0029] Figure 7 This is a schematic diagram of the internal circuitry of the microcontroller of the present invention;

[0030] Figure 8 This is a schematic diagram of the RS485 external control interface circuit of the present invention;

[0031] Figure 9 This is a schematic diagram of the power supply control circuit for the ion generation module of the present invention;

[0032] Figure 10 This is a schematic diagram of the internal circuit of the DC-DC converter of the present invention;

[0033] Figure 11 This is a schematic diagram of the control flow of the control method of the present invention.

[0034] In the diagram: 1. Outer shell; 2. Discharge tip; 3. Ring-shaped grounding collection; 4. Air duct. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Example 1

[0037] In a typical embodiment of the present invention, a symmetrical hydroxyl radical sterilization and disinfection device is proposed, such as... Figure 1 As shown, the device includes an outer shell 1. The sides of the outer shell 1 are L-shaped, and the bottom surface of the outer shell 1 is a rectangular cavity structure. An ion generating module (HOP free hydroxyl invasion sterilization module) is installed inside the cavity. The ion generating module is equipped with a circuit for generating AC high voltage, which is used to generate AC high voltage and act on multiple sets of discharge tips 2. Two discharge tips in each set of discharge tips periodically exchange discharge, with a discharge period of 4.5μs-5μs. The multiple sets of discharge tips extend out of the shell. Multiple air ducts 4 are provided on the shell, with each air duct corresponding to a set of discharge tips. The airflow direction in the air ducts 4 is perpendicular to the discharge tips, which can reduce the wind resistance when the air passes through the sterilization device and increase the contact area. An annular grounding gathering end 3 is provided on the upper part of each discharge tip. The annular grounding gathering end 3 is flush with or higher than the discharge tip.

[0038] In the embodiment, the circuit of the alternating high voltage generated on the ion generation module adopts an alternating inverter high voltage circuit board, the alternating inverter high voltage circuit board is provided with a power supply circuit, a self-oscillation circuit, a voltage-boosting rectifier circuit and an electrode needle discharge circuit connected in sequence, and the electrode needle discharge circuit includes a plurality of discharge tips. Figure 2 As shown in the figure, the self-oscillation circuit includes a resistor R1, a diode D7, a transformer T2, a resistor R2, a resistor R3, a triode Q1 and a diode D1, the voltage-boosting rectifier circuit includes a transformer T1, a diode D5, a diode D6, a diode D4, a capacitor C4 and a diode D3, and the electrode needle discharge circuit includes a first discharge tip, a second discharge tip, a third discharge tip and a fourth discharge tip, wherein the first discharge tip and the second discharge tip form a group of discharge tips, and the third discharge tip and the fourth discharge tip form a second group of discharge tips, and a plurality of groups of discharge tips can be set according to needs.

[0039] Specifically, the positive pole of the power supply is connected to the cathode of the diode D7, the negative pole of the power supply is connected to the anode of the diode D7, the positive pole of the power supply is connected to the same-named end 4 of the first primary winding of the transformer T2 through the resistor R1, the different-named end 3 of the first primary winding is connected to the collector of the triode Q1, the emitter of the triode Q1 is connected to the negative pole of the power supply, the base of the triode Q1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the negative pole of the power supply, the resistor R1 is further connected to the resistor R2, the resistor R3, the same-named end 2 of the second primary winding of the transformer T2 in sequence, the different-named end of the second primary winding of the transformer T2 is connected to the negative pole of the power supply, the current output end of the resistor R2 is further connected to the cathode of the diode D1, the line between the resistor R1 and the resistor R2 is connected to the same-named end 5 of the secondary winding of the transformer T2, the different-named end 7 of the secondary winding of the transformer T2 is connected to the anode of the diode D2, the cathode of the diode D2 is connected to the anode of the diode D4, the cathode of the diode D4 is connected to the same-named end 1 of the primary winding of the transformer T1, the different-named end 2 of the primary winding of the transformer T1 is connected to the negative pole of the power supply, and the diode D4 is connected in parallel with the capacitor C4 and the diode D3. The same-named end 4 of the secondary winding of the transformer T1 is connected to the cathode of the diode D5, the anode of the diode D5 is connected to the first discharge tip and the third discharge tip of the discharge tips respectively, the same-named end 4 of the secondary winding of the transformer T1 is further connected to the anode of the diode D6, the cathode of the diode D6 is connected to the second discharge tip and the fourth discharge tip of each group of discharge tips respectively, and the different-named end 3 of the secondary winding of the transformer T1 is connected to the equipotential terminal.

[0040] The working principle is as follows: after the J1 terminal is connected to the power supply, a self-oscillation circuit is formed by the resistance R1, the resistance R2, the resistance R3, the triode Q1 and the transformer T2, and a constant and continuous oscillation is generated under the self-oscillation circuit, then the voltage is boosted through the transformer T2, the diode D2 and the capacitor C4, and the periodic high-voltage circuit is formed through the transformer T1, and finally the symmetrical high-voltage discharge circuit is formed by the diode D5 and the diode D6, and the periodicity is generated by the self-oscillation circuit at the front end of the transformer, when the same name end of the transformer T1 secondary coil is positive, the voltage of the second discharge tip and the fourth discharge tip relative to the first discharge tip and the third discharge tip is positive and discharges, when the same name end of the transformer T1 secondary coil is negative, the voltage of the first discharge tip and the third discharge tip relative to the second discharge tip and the fourth discharge tip is positive and discharges, and the discharge period is the oscillation period of the self-oscillation circuit, which is between 4.5 and 5 microseconds.

[0041] In the embodiment, the high-voltage circuit board adopts an alternating current inversion high-voltage circuit board, and the voltage range generated by the alternating current inversion high-voltage circuit board is controlled to be 6.5-7.5kV, in the range, no ozone is generated, the distance between the two discharge tips of each group is 25-30mm, the voltage and the tip distance are proportional to each other, if the voltage is too large or the tip distance is too small, high-voltage arc or ozone may be generated, and meanwhile, the frequency range is controlled to be 200-220kHz.

[0042] In the embodiment, the distance between the annular grounding gathering end and the top of the discharge tip is less than 6mm, the electric field strength distribution at the position can be gathered, and then the electric field density and the electric field strength are increased, which is more beneficial to ionization of water molecules and oxygen molecules in the air, and higher concentration of positive and negative ions is generated.

[0043] In the embodiment, the discharge tip adopts an electrode needle, the material is tungsten needle or stainless steel needle, the whole shell adopts plastic material, the whole device has simple and compact structure and light weight, and has wide application scenarios.

[0044] The symmetry hydroxyl radical sterilization and disinfection device provided by the embodiment is symmetrical in that the discharges of the two electric needles are symmetrical. In the circuit, the discharges are exchanged periodically. In the first period, the first electric needle is positive relative to the second electric needle, so that positive ions are generated around the first electric needle, and negative ions are generated around the second electric needle. In the next period, the first electric needle is negative relative to the second electric needle, so that negative ions are generated around the first electric needle, and positive ions are generated around the second electric needle. Meanwhile, the third electric needle is positive relative to the fourth electric needle, so that positive ions are generated around the third electric needle, and negative ions are generated around the fourth electric needle. In the next period, the third electric needle is negative relative to the fourth electric needle, so that negative ions are generated around the third electric needle, and positive ions are generated around the fourth electric needle. The above process is repeated alternately. Therefore, the two electric needle poles are symmetrical in the generation of ions.

[0045] The sterilization and disinfection principle of the symmetry hydroxyl radical sterilization and disinfection device provided by the embodiment is as follows.

[0046] The device generates positive hydrogen ions and negative oxygen ions by ionizing oxygen and water in the air. The positive hydrogen ions and the negative oxygen ions each have one charge, which attracts water molecules in the air. The water molecules surround the ions and form stable cluster ions.

[0047] The HOP free hydroxyl invasion sterilization and disinfection module releases ion groups with positive and negative charges into the air, especially high-concentration negative free hydroxyl groups (HO-). After colliding with microorganisms such as viruses and bacteria in the air, the hydrogen ions (H+) in the microorganisms are extracted and combined with the free hydroxyl groups to form water molecules (H2O), so that the molecular structure of the microorganisms is destroyed, and the microorganisms lose activity to achieve the effect of killing bacteria and viruses in the air. Positive and negative ions can collect water in the air and have more stability under the coating of water molecules, and exist in the air for a longer time. The release concentration of positive and negative charges is related to the field strength distribution of the electrode needle discharge end, and the field strength distribution is related to the voltage strength. Therefore, the charge release concentration is proportional to the voltage of the electrode needle output end. Unlike the negative oxygen ion generator, the negative oxygen ions generated by the negative oxygen ion generator are combined with molecules in the air to carry negative charges, which are more likely to react with active molecules in the air or neutralize with positively charged particulate matter to produce sediment. The device provided by the embodiment is in an ionized state and is combined with water molecules in the air to form a coating, thereby prolonging the duration and range of action of the ions.

[0048] The symmetry hydroxyl radical sterilization and disinfection device provided by the embodiment can be directly installed at the air outlet of an air conditioner, so that the air sent into the room has been subjected to sterilization and disinfection treatment.

[0049] Embodiment 2

[0050] In a typical embodiment of the present application, a symmetry hydroxyl radical sterilization and disinfection system is provided, as shown inFigure 3 As shown, the symmetrical hydroxyl radical disinfection device also includes a power supply, a wind sensor, a microcontroller, the power supply is connected with the wind sensor, the microcontroller and the disinfection device, the wind sensor is connected with the double-way switch and the disinfection device through an operational amplifier, and the microcontroller is connected with the disinfection device through the double-way switch.

[0051] Further, the power supply includes an AC 220V alternating current power supply and a DC 12V direct current power supply, the DC 12V direct current power supply is also connected with a DC-DC converter, which can reduce the 12V DC input to 5V to provide power for the microcontroller.

[0052] The control circuit of the symmetrical hydroxyl radical disinfection system includes a power input part, a wind detection part, a DC-DC conversion part, a microcontroller part, an RS485 external control interface part and a generator power supply control part, the circuit structures of the above parts are existing structures, and the specific connection relationship will not be described one by one.

[0053] The input circuit of the power supply includes an AC 220V alternating current input circuit and a DC 12V direct current input circuit, and the circuit diagram is as shown in Figure 4 and Figure 5 The device can be powered by AC 220V alternating current input or DC 12V direct current input, the AC 220V is filtered and rectified through a switching power supply to provide a DC 12V direct current power supply, and the double power supply design widens the application occasions and facilitates the use.

[0054] As shown in Figure 6 The wind sensor adopts a PTC thermal sensor, the wind detection part can generate temperature changes according to the changes of the wind speed through the PTC thermal sensor R1, and finally converts into voltage signal quantity, which is amplified through a hysteresis comparator amplifier U1.1, the voltage range is adjusted through a potentiometer R3, for example, the lower limit of the voltage is UL, and the upper limit of the voltage is UH, then the output voltage flips when the collected voltage is greater than UH or less than UL, and remains unchanged when it is greater than UL and less than UH, which prevents the dithering output, and then is output to the generator control port through a same-phase amplifier U1.2.

[0055] In the embodiment, the wind sensor element can generate resistance changes due to the changes of the wind speed, after being divided by a voltage dividing resistor, it can output 0-12V voltage changes according to the changes of the wind speed, and output control signals after being amplified by an operational amplifier, which can sense the wind speed of ≥0.8m / s, when the wind speed is greater than 0.8m / s, the ion generator starts to work, and when the wind speed is lower than 0.8m / s, the ion generator stops to work, the circuit has a built-in sensitivity adjustable resistor, which can be adjusted at 0.8m / s-2m / s.

[0056] AsFigure 7 As shown in the figure, the microcontroller part adopts a 51 kernel single-chip microcontroller, which can receive fixed instructions sent by other devices through the RS485 external control interface to output control signals to the generator control port. The RS485 external control structure is as shown in the figure. Figure 8

[0057] As shown in the figure, the ion generation module power supply control part is provided with a MOS tube for inputting power supply switch, and two NPN triodes Q1 and Q2 for providing control ports, so as to input DC 12V voltage to the generator power supply port. Figure 9

[0058] As shown in the figure, the DC-DC conversion circuit can reduce 12V DC input to 5V to provide power supply for the microcontroller and the RS485 chip. Figure 10

[0059] The working principle of the symmetric hydroxyl radical sterilization and disinfection system provided in the embodiment is as follows:

[0060] The power supply provides power supply for the wind sensor, the microcontroller and the sterilization and disinfection device in the system. The wind sensor monitors the wind speed in real time, amplifies the wind speed signal through an operational amplifier, and then outputs a control signal to control the opening and closing of the sterilization and disinfection device. The sterilization and disinfection device can also be controlled to open and close by the microcontroller receiving fixed instructions sent by other devices. Both the operational amplifier and the microcontroller can control the on-off state of the sterilization and disinfection device, but are not directly connected to the sterilization and disinfection device. The double-path dial switch is used to manually dial the switch to select any one path for control.

[0061] Embodiment 3

[0062] A control method of a symmetric hydroxyl radical sterilization and disinfection system, as shown in the figure, comprises the following steps: Figure 11

[0063] The wind sensor collects the wind speed signal, and opens or closes the sterilization and disinfection device according to the wind speed signal.

[0064] Alternatively, the microcontroller receives fixed instructions sent by other devices to control the opening and closing of the sterilization and disinfection device.

[0065] At the same time, the state of the sterilization and disinfection device, including the running state, the closed state and the fault state, is fed back to the microcontroller in real time, so as to realize real-time monitoring of the closed sterilization and disinfection device.

[0066] Further, when the wind speed sensed by the wind sensor is greater than 0.8 m / s, the sterilization and disinfection device is controlled to open.

[0067] ​​​​The control method of the symmetric hydroxyl radical sterilization and disinfection system provided by the embodiment realizes the opening and closing of the sterilization and disinfection device through two modes, different control modes can be selected according to different application places, and the application range of the sterilization and disinfection system is improved.

[0068] The above embodiments are used to specifically describe the technical solutions of the present application, and it should be understood that the above description is only a specific embodiment of the present application, and is not used to limit the present application, and any modification, supplement or similar mode substitution within the principle range of the present application should be included in the protection range of the present application.

Claims

1. A symmetrical hydroxyl radical disinfecting sterilization device, characterized in that, The shell is internally provided with an ion generation module, the ion generation module is internally provided with an alternating high voltage circuit, the alternating high voltage acts on multiple groups of discharge tips, two discharge tips in each group of discharge tips periodically exchange discharges; the multiple groups of discharge tips extend out of the shell, multiple air ducts are arranged on the shell, the air flow in the air ducts is perpendicular to the discharge tips, the upper part of each discharge tip is provided with a ring-shaped grounding gathering end which is flush with or higher than the discharge tip; The alternating high voltage circuit generated on the ion generation module comprises a power supply circuit, a self-oscillation circuit, a voltage boosting rectifier circuit and an electrode needle discharge circuit which are connected in sequence; The self-oscillation circuit comprises a resistor R1, a diode D7, a transformer T2, a resistor R2, a resistor R3, a triode Q1 and a diode D1, the voltage boosting rectifier circuit comprises a transformer T1, a diode D5, a diode D6, a diode D4, a capacitor C4 and a diode D3, and the electrode needle discharge circuit comprises a first discharge tip, a second discharge tip, a third discharge tip and a fourth discharge tip; The periodicity is generated by the self-oscillation circuit at the front end of the transformer T2, when the same name end of the secondary coil of the transformer T1 is positive, the voltage of the second discharge tip and the fourth discharge tip relative to the first discharge tip and the third discharge tip is positive and discharges, and when the same name end of the secondary coil of the transformer T1 is negative, the voltage of the first discharge tip and the third discharge tip relative to the second discharge tip and the fourth discharge tip is positive and discharges; By adjusting the corresponding high voltage range and making two discharge tips in each group of discharge tips exchange discharges, long-time single-polarity high voltage continuous discharge is avoided, and the generation of ozone is further avoided.

2. The symmetrical hydroxyl radical disinfecting device of claim 1, wherein, The same name end of the secondary winding of the transformer T1 is connected with the cathode of the diode D5, the anode of the diode D5 is connected with multiple discharge tips, the same name end of the secondary winding of the transformer T1 is also connected with the anode of the diode D6, the cathode of the diode D6 is connected with multiple discharge tips, and the different name end of the secondary winding of the transformer T1 is connected with an equipotential terminal.

3. The symmetrical hydroxyl radical disinfecting device of claim 1, wherein, The ion generation module adopts an alternating high voltage inverter circuit board, the voltage range generated by the alternating high voltage inverter circuit board is controlled to be 6.5-7.5kV, and the frequency range is controlled to be 200-220kHz.

4. The symmetrical hydroxyl radical disinfecting device of claim 1, wherein, The distance between the two discharge tips in each group is 25-30mm.

5. The symmetrical hydroxyl radical disinfecting device of claim 1, wherein, The distance between the ring-shaped grounding gathering end and the top of the discharge tip is less than 6mm.

6. A symmetrical hydroxyl radical germicidal disinfection system comprising the symmetrical hydroxyl radical germicidal disinfection device of any one of claims 1-5, wherein, Further comprising: a power supply, a wind sensor and a microcontroller, the power supply is connected with the wind sensor, the microcontroller and the symmetric hydroxyl radical sterilization and disinfection device.

7. The system for symmetric hydroxyl radical disinfection of claim 6, wherein, The power supply comprises an AC220V alternating power supply and a DC12V direct current power supply, and the DC12V direct current power supply is further connected with a DC-DC converter.

8. A method of controlling a symmetrical hydroxyl radical disinfectant sterilization system as defined in claim 6, wherein The following steps are included: The wind sensor collects wind speed signals, and turns on or off the sterilization and disinfection device according to the wind speed signals; Or, the microcontroller receives fixed instructions sent by other devices to control the opening and closing of the sterilization and disinfection device. Meanwhile, the state of the sterilization and disinfection device, including the running state, the closed state and the fault state, is fed back to the microcontroller in real time, so that the sterilization and disinfection device is monitored in real time.

9. The control method of the symmetrical hydroxyl radical disinfecting sterilization system according to claim 8, characterized in that, When the wind sensor senses that the wind speed is greater than 0.8 m / s, the sterilization and disinfection device is controlled to be turned on.

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