Ionization electrode sheet, ionization module having electrode sheet, and ion-tunnel-type air purification and disinfection device

Abstract

Provided in the present invention are an ionization electrode sheet, an ionization module having the electrode sheet, and an ion-tunnel-type air purification and disinfection device. The ionization electrode sheet is provided with through holes comprising concentric circular arcs, loop arcs and loop angles, wherein the loop arcs and the loop angles have the functions of accelerating and guiding electrons and suppressing the generation of ozone and nitrogen oxides; the ionization module having ionization electrode sheets and ion emission needles forms a tunnel-type ionization channel, so as to form plasma of a larger magnitude during ionization, thereby improving the air purification effect; and the ion-tunnel-type air purification and disinfection device obtained by the ionization module cooperating with an adsorption module, ion modules and an air speed and air control module can purify microparticles of PM0.3 and even PM0.1, has a nanoscale efficient purification capability and also has an excellent bacteria and virus killing function, thus achieving the air purification effects, i.e., large air volume, low energy consumption, no ozone and nitrogen oxides, high performance, safety and environmental friendliness; moreover, the ion-tunnel-type air purification and disinfection device has a high degree of intelligence and is applicable to different places.

Description

Ionization electrode, ionization module with the same, and ion tunnel type air purification and disinfection equipment Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an ionization electrode, an ionization module having the electrode, and ion tunnel type air purification and disinfection equipment. Background Art

[0002] With the improvement of my country's economic development level, air pollution has become an important factor threatening people's health in public buildings, homes and other places. Therefore, it is crucial to effectively disinfect suspended particulate matter and microorganisms such as viruses, bacteria or fungi in the air and purify the air. It is of great significance to study technologies and equipment with ultra-high efficiency air purification and disinfection functions.

[0003] The invention patent (application number CN 202211742181.6) discloses a low-temperature plasma air disinfection device, which includes a plasma generating module, which includes a power circuit system, a cylindrical ground electrode and a discharge electrode, and the discharge electrode is arranged in the inner cavity of the cylindrical ground electrode; when the device is used, the outside air enters the inner cavity of the cylindrical ground electrode from the air inlet, and inputs current to the electrode rod. The dielectric barrier discharge structure formed by the electrode rod, the insulating tube and the cylindrical ground electrode can produce more low-temperature plasma active substances. When the air is discharged from the air outlet through the vent, the plasma active substances disinfect bacteria and viruses in the air, thereby improving the efficiency of air disinfection. However, when the plasma generating module of the device is ionized, an arc is easily formed between the positive and negative electrodes to produce ozone. In order to eliminate ozone, the device fills the inner cavity of the cylindrical ground electrode with a granular catalyst for removing ozone, which increases the complexity of the device and the purification cost. Moreover, when performing large-volume purification, the granular catalyst has limited effect on removing ozone.

[0004] The invention patent (application number CN 201610990415.7) discloses an air purification method for suppressing ozone production, including an ionization step, in which the air is ionized into positive and negative ions through a first discharge field. Dust particles in the air collide with the positive and negative ions and carry positive or negative charges. Part of the oxygen in the air forms ozone in this step; a dust collection step, in which the positively or negatively charged dust particles move toward the dust collecting plate under the action of the first discharge field and are adsorbed on the dust collecting plate; a deozonation step, in which the air after the dust collection step passes through a second discharge field in the opposite direction of the first discharge field, reducing the ozone formed in the ionization step to oxygen; the device requires a second discharge field to remove ozone, which greatly increases the cost of purifying the air. In addition, purification equipment in the prior art often only focuses on cyclic purification capabilities, with poor single-time purification effects and poor purification efficiency.

[0005] In view of this, it is necessary to design an improved ionization electrode, an ionization module having the electrode, and an ion tunnel type air purification and disinfection equipment to solve the above problems.

[0006] Summary of the Invention

[0007] The present invention aims to provide an ionization electrode, an ionization module having the electrode, and an ion tunnel-type air purification and disinfection device. By arranging a through hole including concentric arcs, loop arcs, and loop angles on the ionization electrode, the through hole accelerates and guides electrons and suppresses the production of ozone. The ionization module, which contains multiple ionization electrodes and ion emission needles, forms a tunnel-type ionization channel, promotes ionization to form a larger plasma. The ionization module cooperates with an adsorption module, an ion module, and a wind speed and wind control module to obtain the ion tunnel-type air purification and disinfection device, so as to achieve the purpose of large air volume, low energy consumption, no ozone and nitrogen oxides, high performance, safe and environmentally friendly air purification.

[0008] To achieve the above-mentioned purpose of the invention, the present invention provides an ionization electrode, wherein a through hole is provided on the ionization electrode, and the outline of a single through hole includes several concentric arcs with the same radius and not connected to each other, a loop arc extending in the opposite direction and tangentially to any concentric arc, and a loop angle located between two adjacent loop arcs; the loop angle has a sharp angle less than or equal to 90°, and the distance from the vertex of the sharp angle to the center of the concentric arc is greater than the radius of the concentric arc. The loop arc and loop angle play a role in guiding and accelerating electrons.

[0009] The present invention also provides an ionization module, which includes a plurality of ionization electrode pieces arranged at equal intervals and a conductor fixing member connecting the ionization electrode pieces. The ionization electrode pieces are ionization electrode pieces having the above-mentioned structure, and the through-hole positions of the plurality of ionization electrode pieces correspond one to one to form an ionization channel with a tunnel structure. The ionization module also includes an ion emission needle with a needle tip located in the center point area of ​​the ionization channel; the conductor fixing member is externally connected to a positive high-voltage emitter, and the ion emission needle is externally connected to a negative high-voltage emitter.

[0010] The present invention also provides an ion tunnel type air purification and disinfection device, which includes the above-mentioned ionization module and is used to efficiently generate plasma.

[0011] Furthermore, the ion tunnel air purification and disinfection equipment includes a wind speed control module, several ion modules, at least one ionization module and at least one adsorption module arranged in sequence along the air flow direction, the wind speed control module is connected to the ion module, and the wind speed control module regulates the working number of the ion module according to the wind speed passing into the ion tunnel air purification and disinfection equipment; the ion module is respectively connected to the ionization module and the adsorption module to provide working voltage for the ionization module and the adsorption module.

[0012] Furthermore, the orientation of the ionization module is set so that the tip of the ion emission needle faces the adsorption module.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention provides a through-hole formed by concentric arcs, loop arcs, and loop angles in the ionization electrode, which accelerates and guides electrons and suppresses the production of ozone and nitrogen oxides during the ionization process. The ionization module, which has multiple ionization electrodes and ion emitters, forms a tunnel-like ionization channel, which can form a larger plasma during ionization, thereby improving the ionization purification effect of the air. The aforementioned ionization module cooperates with the adsorption module, ion module, and wind speed control module to form an ion tunnel-type air purification and disinfection device. The adsorption module not only has excellent adsorption performance but also has low wind resistance, achieving low energy consumption and high adsorption purification effects. Test results show that in addition to meeting the purification capacity of PM2.5 levels, the device can also purify nano-sized microparticles of PM0.3 and even PM0.1, with high-efficiency purification capacity at the nanoscale. It also has excellent bacteria and virus killing functions, achieving a high air volume, low energy consumption, no ozone and nitrogen oxides, high performance, safe and environmentally friendly air purification effect.

[0015] 2. The loop corner area in the ionization electrode of the present invention is a high-concentration positive ion generation area, and the loop arc can guide and accelerate electrons into the loop corner structure; in the ionization module composed of multiple ionization electrodes and ion emission needles, free electrons escape outward in a spherical shape at the needle tip, forming a negative charge state with oxygen molecules, various microparticles and microbial particles in the air. At the same time, under the action of the positive high-voltage ionization electrode, part of the charge returns to the ionization electrode, and the ionization electrode will also adsorb the charge of the molecules in the air to form positive ions, thereby forming plasma; the microparticles and microorganisms in the plasma are further enhanced in adsorption after entering the adsorption module, thereby playing a role in efficiently purifying the air. In addition, the loop angle amplifies the magnitude of positive ions, matching the large number of negative ions produced by the cathode emitter, while making it less likely for arcing to occur between the positive and negative electrodes. This is because a large number of free electrons collected by the ionization electrode will be guided by the loop arc and the loop angle to the sharp corner area of ​​the loop angle. This corner is far away from the ion emitter and has a safe distance. Therefore, under the joint action of the high-voltage operating frequency, a non-arcing ionization structure in a high plasma state is generated, avoiding the generation of ozone and nitrogen oxides from the source.

[0016] 3. The adsorption module of the present invention adopts spacers to keep all the membrane electrodes of the membrane electrode group at a stable spacing, avoiding contact of the membrane electrodes due to deformation during use, ensuring the balanced distribution of the field kinetic potential corona field inside the adsorption module, and obtaining a more ideal purification and killing effect of bacteria and viruses; the spacers not only fix and support all the membrane electrodes and make them evenly distributed, but also the structure of the spacers and the arrangement perpendicular to the membrane electrode group will not increase the cross-sectional wind resistance too much. At the same time, combined with the setting of the membrane electrode spacing, the ventilation rate of the adsorption module reaches about 70%, achieving an ultra-low wind resistance state, and greatly reducing the energy consumption cost of air purification.

[0017] 4. The ion tunnel air purification and disinfection equipment of the present invention is equipped with a wind speed control module, which flexibly controls the working quantity of the ion module by sensing the wind speed, so that the air purification and disinfection equipment can adapt to places with different ventilation requirements, especially places that require intelligent control of wind speed. This method reduces energy consumption and avoids energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram showing the overall structure of the ionization electrode and a partially enlarged structure of the through hole of the present invention.

[0019] FIG2 is a schematic diagram of the free electron space flow of the ionization electrode of the present invention.

[0020] FIG3 is a schematic structural diagram of a first form of a single through hole of an ionization electrode of the present invention.

[0021] FIG4 is a schematic structural diagram of a second form of a single through hole of an ionization electrode of the present invention.

[0022] FIG5 is a schematic diagram of various structures of a single through hole of the ionization electrode of the present invention.

[0023] FIG6 is a schematic diagram of various other structures of a single through hole of the ionization electrode of the present invention.

[0024] FIG7 is a schematic diagram of the overall structure of the ionization module of the present invention.

[0025] FIG8 is a schematic diagram showing the spatial distribution of free electrons in the ionization channel formed by the ionization module of the present invention.

[0026] FIG9 is a schematic diagram of the internal structure of the ion tunnel type air purification and disinfection equipment of the present invention.

[0027] FIG10 is a schematic structural diagram of an adsorption module.

[0028] FIG11 is a front view of the adsorption module of FIG10 .

[0029] FIG12 is a partial enlarged view of point A in FIG11 .

[0030] FIG13 is a schematic diagram of the overall structure of the membrane electrode.

[0031] FIG14 is a schematic diagram of the overall structure of the spacer strip.

[0032] FIG15 is a schematic diagram of a combination of an ionization module and 2 to 4 adsorption modules connected in series.

[0033] FIG16 is a schematic diagram showing an ionization module and an adsorption module connected in series as a purification module for enhanced efficiency.

[0034] FIG17 is a schematic diagram of four purification modules connected in parallel.

[0035] FIG18 is a schematic diagram of the overall structure of the ion module.

[0036] FIG19 is a schematic diagram of the overall structure of the wind speed and wind control module.

[0037] Figure 20 is a circuit diagram of the basic control principle of the wind speed control module.

[0038] Figure 21 is a structural schematic diagram of the ion tunnel air purification and disinfection equipment of Example 1.

[0039] FIG22 is a schematic diagram of the internal structure after removing multiple end covers and vents in FIG21 .

[0040] FIG23 is a schematic diagram of the structure of the ionization electrode used in Comparative Examples 1 to 5.

[0041] Reference numerals

[0042] 100-ionization module; 110-ionization electrode; 111-concentric arc; 112-loop arc; 113-loop angle; 114-point angle; 120-ion emission needle; 130-conductor fixing piece; 140-conductor connecting plate; 200-adsorption module; 2101-positive electrode assembly, 2102-negative electrode assembly; 211-membrane electrode; 212-fixing bar; 220-spacer bar; 221-horizontal bar; 222-narrow bar; 223- Fixed clamp; 300-wind speed control module; 310-fixing plate; 320-wind sensor group; 330-operation control circuit group; 340-input power terminal; 350-power output terminal; 400-ion module; 410-positive high-voltage output line; 420-negative high-voltage output line; 430-low-voltage input line; 440-plastic shell; 450-epoxy resin pouring glue layer; 500-input air outlet; 600-output air outlet. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Please refer to Figure 1, which shows an ionization electrode 110. The ionization electrode 110 is provided with a through hole extending from front to back. The outline of a single through hole includes several concentric arcs 111 of the same radius and not connected to each other, a loop arc 112 extending in the opposite tangential direction along any concentric arc 111, and a loop corner 113 located between two adjacent loop arcs 112. The loop corner 113 has a sharp angle 114 less than or equal to 90°. The distance from the vertex of the sharp angle 114 to the center P of the concentric arc 111 is greater than the radius of the concentric arc 111. The loop arc 112 and the loop corner 113 play a role in guiding and accelerating electrons and suppressing the production of ozone and nitrogen oxides during the ionization process.

[0045] In particular, when the ionization electrode 110 provided with the loop corner 113 and the loop arc 112 is used, the loop corner 113 area in the ionization electrode 110 is a high-concentration positive ion generation area, which can amplify the magnitude of positive ions and match the large number of negative ions generated by the negative electrode ion emission needle 120, while making it less likely to arc between the positive and negative electrodes, because a large number of free electrons collected by the ionization electrode 110 will be guided by the loop arc 112 and the loop corner 113 to the sharp corner 114 area of ​​the loop corner 113, and this corner is far away from the ion emission needle 120, with a safe distance, so under the joint action of the high-voltage operating frequency, a non-arcing ionization structure in a high plasma state is generated, thereby avoiding the generation of ozone and nitrogen oxides from the source.

[0046] In this application, the ionization electrode 110 is a metal conductive plate; through-holes are distributed in an array on the metal conductive plate. Within the outline of a single through-hole, the total arc length of several concentric arcs 111 accounts for at least 30% of the circumference of the concentric circle in which they are located. The radius of the loop arc 112 is smaller than that of the concentric arc 111. This creates a converging loop angle 113 between two adjacent loop arcs 112, creating a path that guides electrons toward the loop angle 113, as shown in Figure 2.

[0047] Converging loop angle 113 can be formed by the direct intersection of two adjacent loop arcs 112, as shown in FIG3 ; loop angle 113 can also be formed by the intersection of two adjacent loop arcs 112 and a straight line connecting the two loop arcs, as shown in FIG4 ; loop angle 113 can also be formed by the intersection of two adjacent loop arcs 112 and the free ends of the two intersecting straight lines, that is, one end of loop arc 112 intersects a straight line, and the other end is tangent to the adjacent concentric arc 111, as shown in FIG1 . Preferably, the two straight lines intersect at right angles.

[0048] The radius of the concentric arc 111 is 28-35 mm, and the distance from the sharp corner 114 to the center of the concentric arc 111 is 42-50 mm. The number of through holes on the metal conductive plate 115 is determined according to the air volume, and the purified air volume of a single through hole is 60-70 m 3 .

[0049] In some specific embodiments, the number of through holes on the single ionization electrode plate 110 is 16, distributed in a 4 x 4 pattern. The number of concentric arcs 111 of a single through hole is 4, and the number of loop corners 113 is correspondingly 4.

[0050] Those skilled in the art should understand that the number of concentric arc segments in a single through hole is not limited to 4. In practical applications, it can be specifically set according to actual working conditions. As shown in Figure 5, a single through hole includes 3 to 12 concentric arc segments 111, and the number of loop corners 113 is the same as the number of concentric arc segments 111.

[0051] In some specific embodiments, when the number of concentric arcs 111 of a single through hole is even, the arc lengths of the two concentric arcs 111 with the center of the concentric circle as the symmetry point are equal.

[0052] In some specific embodiments, the arc lengths of all concentric arcs 111 of a single through hole are equal.

[0053] Please refer to FIG7 , which shows an ionization module 100 having the above-mentioned ionization electrode 110. The ionization module 100 includes a plurality of ionization electrode 110 arranged at equal intervals, a conductor fixture 130 connecting the ionization electrode 110, and a corresponding through-hole position of the plurality of ionization electrode 110, forming an ionization channel with a tunnel structure. The ionization module 100 also includes an ion emission needle 120 with a needle tip located in the center area of ​​the ionization channel; the conductor fixture 110 is externally connected to a positive high-voltage emitter, and the ion emission needle 120 is externally connected to a negative high-voltage emitter. It should be noted that the needle tip of the ion emission needle 120 is located in the center area of ​​the ionization channel, including the needle tip being located in the center area on the plane of the through-hole and also being located in the center area in the thickness of the ionization channel.

[0054] In particular, in the ionization module 100 composed of multiple ionization electrodes 110 and ion emission needles 120, free electrons escape outward in a spherical shape at the needle tip of the ion emission needle 120, as shown in Figure 8, forming a negative charge state with oxygen molecules, various microparticles and microbial particles in the air. At the same time, under the action of the positive high voltage ionization electrode 110, part of the charge returns to the ionization electrode 110. The ionization electrode 110 will also adsorb the charge of the molecules in the air to form positive ions, thereby forming plasma; the microparticles and microbial particles in the plasma are further enhanced in adsorption after entering the adsorption module 200, thereby playing a role in efficiently purifying the air.

[0055] Specifically, the ion emitting needles 120 are made of a metal conductor, and the ends of several ion emitting needles 120 are fixed to a conductor connecting plate 140, which is connected to a negative high-voltage emitter. The diameter of the ion emitting needles 120 decreases from the end connected to the conductor connecting plate 140 to the needle tip, with the diameter being smallest at the needle tip. This allows a large number of negative ions to accumulate near the needle tip of the ion emitting needle 120 during operation, emitting free electrons outward in a spherical manner, forming a high-concentration negative ion generation region at the needle tip, thereby improving the ionization effect. The concentration of negative ions is inversely proportional to the distance from the needle tip, and the further away from the needle tip of the ion emitting needle 120, the lower the negative ion concentration.

[0056] More specifically, the conductor connecting plate 140 and the conductor fixing member 130 are nested, with an insulating layer provided between them. The number of ion emitting needles 120 matches the number of through-holes in the ionization electrode 110. In this embodiment, one ion emitting needle 120 is provided for each through-hole. The length of the ion emitting needles 120 matches the number and spacing of the ionization electrode 110, so that the tips of the ion emitting needles 120 are located at the center of the ionization channel. That is, when viewed from the front or side, the tips of the ion emitting needles 120 are located at the center of the through-hole or the center of the thickness of the ionization electrode 110.

[0057] In some specific embodiments, the ion emission needle 120 is routed inside the plastic shell or fixed using a PCB board mode and then pierced, leaving only the needle and needle tip to release free electrons, and is insulated and sealed in the plastic shell groove to avoid leakage of high voltage electricity as much as possible, ensuring that the high-voltage terminal can be normally connected to the high-voltage line.

[0058] In some specific embodiments, the voltage difference between the positive high-voltage emitter and the negative high-voltage emitter when no-load is 20-50 kV.

[0059] In some specific embodiments, there are two or more ionization electrodes 110 , and the spacing between the ionization electrodes 110 is 3 to 30 mm. The spacing between the ionization electrodes 110 is related to the number of the ionization electrodes 110 .

[0060] The purified air volume of a single through hole in the single ionization electrode 110 is 60-70m 3 .

[0061] Please refer to Figure 9, which shows an ion tunnel air purification and disinfection device. The ion tunnel air purification and disinfection device includes an ionization module 100 for efficiently generating plasma. The ion tunnel air purification and disinfection device includes a wind speed control module 300, a plurality of ion modules 400, at least one ionization module 100 and at least one adsorption module 200 arranged in sequence along the direction of air flow. The wind speed control module 300 is connected to the ion module 400. The wind speed control module 300 regulates the working quantity of the ion module 400 according to the wind speed entering the ion tunnel air purification and disinfection device; the ion module 400 is respectively connected to the ionization module 100 and the adsorption module 200 to provide operating voltage for the ionization module 100 and the adsorption module 200.

[0062] Specifically, the ionization module 100 is oriented so that the tip of its ion emitting needle 120 faces the adsorption module 200. Because high-voltage electrons are driven, they move toward the tip and escape from the ion emitting needle 120. This driving principle requires that the tip of the ion emitting needle 120 align with the wind direction. If the ionization module 100 is positioned in the opposite direction, the air purification effect of the ion tunnel air purification and disinfection device will be greatly reduced.

[0063] Please refer to FIG10 , the adsorption module 200 includes a membrane electrode group, a spacer 220 for fixing the membrane electrode group, and the membrane electrode group includes a positive electrode group 2101 and a negative electrode group 2102 with the same number of membrane electrode 211 and opposite directions. The membrane electrode 211 in the positive electrode group 2101 and the negative electrode group 2102 are staggered with equal spacing; as shown in FIG11 and FIG12 , the positive electrode group 2101 is arranged along the membrane electrode 211. One end of the positive electrode assembly 2101 is provided with a fixing bar 212, and the other end is a free end. The negative electrode assembly 2102 also has a fixing bar 212 along the length of the membrane electrode 211, and the other end is a free end. The free ends of the positive electrode assembly 2101 and the free ends of the negative electrode assembly 2102 are installed in an opposite and staggered manner, so that the membrane electrode 211 in the positive electrode assembly 2101 and the negative electrode assembly 2102 are arranged in an evenly spaced and staggered arrangement. In actual use, the fixing bar 212 of the positive electrode assembly 2101 connects to the positive electrode of the ion module 400, and the fixing bar 212 of the negative electrode assembly 2102 connects to the negative electrode of the ion module 400. The ends of the positive electrode assembly 2101 and the negative electrode assembly 2102 provided with the fixing bar 212 are also provided with a plastic shell obtained by injection molding, which serves to protect the membrane electrode 211.

[0064] As shown in Figure 13 , the electrode sheet 211 comprises a metal conductive alloy sheet and an insulating film layer surrounding the sheet. The corners of the metal conductive alloy sheet are smoothly rounded to prevent sharp corners from scratching the insulating film layer. The thickness of the metal conductive alloy sheet ranges from 0.05 to 1 mm. The width of the metal conductive alloy sheet ranges from 5 to 500 mm. Within the electrode assembly, the spacing between the insulating film layers of adjacent electrode sheets 211 (membrane spacing) ranges from 0.8 to 3 mm.

[0065] It should be noted that in actual applications, the width of the metal conductive alloy sheet represents the most critical distance that air travels through the adsorption module 200. It needs to be accurately designed based on the target air volume for air purification. The wider the width, the greater the force exerted on pollutant particles, bacteria, viruses, etc. in the passing air. The membrane electrodes 211 are arranged at equal intervals. The setting of the membrane spacing is related to the equipment matching air volume, the pressure difference parameters of the ion module 400, the power parameters, the width and length of the metal conductive alloy sheet of the membrane electrode 211, and the spacing between the emitter and the membrane electrode of the ion module 400. Engineers can determine the membrane spacing based on actual needs.

[0066] As shown in Figure 14, the spacer bar 220 includes a horizontal bar 221, a plurality of narrow strips 222 perpendicularly connected to the horizontal bar 221, and fixed clamps 223 at both ends of the horizontal bar 221. The spacer bar 220 is arranged perpendicular to the membrane electrode group. The extension direction of the horizontal bar 221 is consistent with the arrangement direction of the membrane electrode sheets 211. The narrow strips 222 of the spacer bar 220 are inserted between two adjacent membrane electrode sheets 211. The fixed clamps 223 fix the spacer bar 220 to the membrane electrode group. The spacer bar 220 plays the role of supporting and separating the membrane electrode sheets 211. With this arrangement, the spacer bar 220 maintains a stable spacing between all the membrane electrode sheets 211 of the membrane electrode group, ensuring a balanced distribution of the field potential corona field inside the adsorption module 200, and achieving a more ideal purification and sterilization effect for bacteria and viruses.

[0067] In particular, the spacer strips 220 not only fix and support all the membrane electrodes 211 so that they will not contact each other due to deformation during use, but also ensure that the membrane electrodes 211 are evenly distributed. The structure of the spacer strips 220 and the arrangement perpendicular to the membrane electrode group will not increase the cross-sectional wind resistance too much. At the same time, combined with the setting of the spacing between the membrane electrodes 211, the ventilation rate of the adsorption module 200 reaches about 70%. This ventilation rate is similar to the wind resistance caused by the conversion of a square air duct to a circular air duct (the diameter is the width of the square air duct), achieving an ultra-low wind resistance state and greatly reducing the energy consumption cost of air purification.

[0068] The number of narrow strips 221 in the spacer strips 220 is determined by the number of membrane electrodes 211 in the membrane electrode assembly, and the width of the narrow strips 221 is determined by the spacing between the membrane electrodes 211. The number of spacer strips 220 in the adsorption module 200 can be flexibly adjusted by engineers based on the actual fixing conditions of the membrane electrodes 211.

[0069] The material of the spacer strip 220 is a highly insulating material with high toughness and a certain hardness, including ABS (a terpolymer of acrylonitrile, butadiene, and styrene) plastic, PC (polycarbonate) plastic or a composite plastic of the above two, PA6 (nylon) material, glass fiber reinforced PET (polyethylene terephthalate) material, PS (polystyrene) material, PP (polypropylene) material, and one of PPR (type 3 polypropylene) materials.

[0070] Specifically, the distance between the ionization module 100 and the adsorption module 200 (module spacing) is 20 to 100 mm, and the module spacing is the closest distance between the metal conductors of the ionization module 100 and the adsorption module 200. In practical applications, the number of ionization modules 100 or adsorption modules 200 can be set to 1 to 4; for example, when the number of ionization modules 100 or adsorption modules 200 is two or more, the adsorption modules 200 are arranged in series or in parallel, and it is ensured that the input wind passes through the ionization module 100 first. As shown in Figure 15, an ionization module 100 is combined with 2 to 4 adsorption modules in series. In this combination, the spacing of the adsorption modules 200 does not need to be strictly limited, and the series connection has a purification effect with a larger air volume. As shown in Figure 16, the ionization module 100 and the adsorption module 200 can also be combined as a purification module to perform series synergy enhancement. As shown in FIG17 , four purification modules can be connected in parallel to form a channel purification module with four times the purification capacity. In this method, the purification modules are installed with gaps sealed, and the connecting wires of the same nature are connected with high-voltage power cables.

[0071] Please refer to Figure 18, the ion module 400 contains a positive high-voltage output line 410, a negative high-voltage output line 420 and a low-voltage input line 430. The positive high-voltage output line 410 is connected to the ionization electrode 110 of the ionization module 100, and the negative high-voltage output line 420 is connected to the ion emission needle 120; the ion module 400 also includes a plastic shell 440 for protecting internal components and an epoxy resin pouring glue layer 450.

[0072] The number of the ion modules 400 is two or more, and the ion modules 400 can input 12V direct current or 110-220V alternating current.

[0073] Referring to Figure 19, the wind speed control module 300 is located at the input air vent 500 or the output air vent 600 of the ion tunnel type air purification and disinfection equipment, and is used to monitor the wind speed of the input ion tunnel type air purification and disinfection equipment. The wind speed control module 300 includes a fixed plate 310, an operation control circuit group 330 located on the fixed plate 310, an input power terminal 340, a plurality of power output terminals 350, and a wind sensor group 320 arranged perpendicular to the fixed plate 310. Any power output terminal 350 is connected to an ion module 400, and the wind sensor group 320 is arranged opposite the input air vent 500 or the output air vent 600 of the ion tunnel type air purification and disinfection equipment, for monitoring the wind speed and transmitting the signal to the operation control circuit group 330, and the operation control circuit group 330 regulates the working quantity of the ion module 400 through the power output terminal 350.

[0074] The wind speed control module 300 flexibly controls the working quantity of the ion module 400 by sensing the wind speed. The basic control principle of the wind speed control module 300 is shown in FIG20 . The two wind sense comparison signals of the wind sensor group 320 pass through the operation chip control module of the operation control circuit group 330, and respectively control the two relay switches to control the power on and off of the two power output terminals 350, thereby controlling the working state of the connected ion module 400; so that the air purification and disinfection equipment can adapt to places with different ventilation requirements, especially places that require intelligent control of wind speed, and this method reduces energy consumption and avoids energy waste.

[0075] It should be noted that, when used, the ion tunnel-type air purification and disinfection equipment of the present invention also includes various parts and accessories for connecting or fixing the ionization module 100, the adsorption module 200, the ion module 400 and the wind speed control module 300, as well as a sealed shell that wraps the ionization module 100, the adsorption module 200, the ion module 400 and the wind speed control module 300, and an input air outlet 500 and an output air outlet 600 are set at both ends of the sealed shell; the structure or quantity of the parts, accessories and shell is not limited here.

[0076] The ion tunnel air purification and disinfection equipment of the present invention can be applied to building ventilation ducts, embedded large purification units, mobile purification equipment, wall-mounted purification equipment, ceiling-mounted purification equipment, desktop purification equipment, cold chain preservation environment, pharmaceutical production environment, large-scale breeding and planting animal husbandry, medical system anti-infection environment, high-end equipment production environment (core high-clean environment for semiconductor chip production), high-end accessories production environment (high-requirement electroplating spraying industry), etc.

[0077] Example 1

[0078] Please refer to Figures 21 and 22. This embodiment provides an ion tunnel air purification and disinfection equipment, model IT1000-2, which can be used for 300 to 1200m 3 / h of large air volume for purification; the equipment is provided with a wind speed control module 300, two ion modules 400 (positive and negative voltage difference of 30kV, input voltage of 220V AC, working current ≥80mA, working frequency of 35KHz±5%), an ionization module 100 and an adsorption module 200 in sequence along the wind direction, the wind speed control module 300 is connected to the ion module 400, and the wind speed control module 300 adjusts the working number of the ion module 400 according to the wind speed entering the ion tunnel air purification and disinfection equipment. When the wind speed exceeds 0.5 m / s, the wind speed switch will start one of the ion modules 400 to work. When the wind speed is greater than 2 m / s, the second ion module 400 is also started, and the two ion modules 400 jointly drive the purification module to work; the ion module 400 is connected to the ion module 100 and the adsorption module 200 respectively; wherein, the module spacing between the ion module 100 and the adsorption module 200 is 63 mm.

[0079] In this device, the ionization module 100 uses an ionization electrode 110 with 16 through holes (4x4 distribution). As shown in Figure 1, the number of ionization electrode 110 is 5, the spacing is 5mm, the radius of the concentric arc 111 of the through hole is 30mm, the number is 4, and the purification capacity of a single hole of the through hole is 60-70m 3 The loop angle 113 is formed by two adjacent loop arcs 112 and two intersecting straight lines. One of the sharp corners 114 of the loop angle 113 is 90°, and the distance from the sharp corner 114 to the center of the concentric arc 111 is 44.23 mm.

[0080] The adsorption module 200 uses 120 membrane electrodes 211, with 60 pieces in each of the positive electrode membrane electrode group and the negative electrode membrane electrode group, and the membrane spacing is 1.6mm; the metal conductive alloy sheet in the membrane electrode 211 is a stainless steel sheet, and the insulating film layer is a PET film. The width of the stainless steel sheet is 60mm, the length is 267.4mm, the thickness of the stainless steel sheet is 0.2mm, and the total thickness of the membrane electrode 211 is 0.6mm; the spacer bars 220 are made of ABC material, the number of the spacer bars 220 is 5, the number of the narrow strips 222 of the spacer bars 220 is 119, and the horizontal bar width of the spacer bars 220 is 2mm.

[0081] When the ion tunnel air purification and disinfection equipment is used in a square air duct with a width of 267.4mm, the above parameters are used to calculate the ventilation rate:

[0082] The air duct area is: 267.4mm*267.4mm=71502.76mm 2 ,

[0083] The cross-sectional area of ​​the membrane electrode and the separator in the air duct area is: 267.4mm×120 (pieces)×0.6mm+2mm×1.6mm×119 (pieces)×5 (groups)=21156.8mm 2 ,

[0084] The ventilation rate is (71502.76-21156.8) / 71502.76×100%≈70%, which means that the ventilation rate of the adsorption module 200 reaches 70%, achieving an ultra-low wind resistance state, reducing the energy consumption of the equipment, and reducing the user's usage cost.

[0085] The equipment's one-time purification efficiency for microorganisms, one-time purification efficiency for viruses, and the ozone and nitrogen oxide concentrations at the equipment outlet were tested. The testing basis and method for the one-time purification efficiency for microorganisms were in accordance with Appendix D of the national standard GB / T 34012-2017, the testing basis and method for the one-time purification efficiency for viruses were in accordance with the national standard GB / T 18204.5-2013, and the testing basis and method for the ozone concentration were in accordance with the national standard GB 21551.3-2010. The instrumental measurement limit for ozone concentration testing was 0.001 mg / m 3 The nitrogen oxide concentration is tested by direct reading method. It should be noted that, in all the above tests, the supporting fan is preheated for 10 minutes to reach a stable state before testing. The air volume of the supporting fan is 1200m 3 / hour. The test results are shown in Tables 1 to 3.

[0086] Table 1 Single virus inactivation rate test results of the equipment in Example 1

[0087] Table 2 Single microbial inactivation rate test results of the equipment in Example 1

[0088] Table 3 Ozone concentration and nitrogen oxide concentration test results of the equipment in Example 1

[0089] It can be seen from Tables 1 to 3 that the ion tunnel air purification and disinfection equipment provided in Example 1 has excellent bacteria and virus killing functions, strong air purification and disinfection capabilities, and produces almost no ozone and nitrogen oxides, and is highly safe.

[0090] Comparative Example 1 to Comparative Example 5

[0091] Comparative Examples 1 to 5 respectively provide an ion tunnel type air purification and disinfection device. Compared with Example 1, the difference is that the through hole of the ionization electrode 110 is different (including the difference in structure or concentric arc diameter), as shown in Figure 23. Numbers 1 to 5 in the figure correspond to Comparative Examples 1 to Comparative Examples 5, respectively. The rest are roughly the same as Example 1 and will not be repeated here.

[0092] The equipment of Comparative Examples 1 to 5 was tested for single microbial inactivation rate, single virus inactivation rate, and ozone concentration and nitrogen oxide concentration at the equipment outlet. The results are shown in Table 4.

[0093] Table 4 Performance test results of the equipment in Comparative Examples 1 to 5

[0094] As shown in Table 4, the through-hole contour line of the ionization electrode in Comparative Example 1 does not have concentric arcs, but only concentric circle tangent points. Although the wind resistance is small, the ability to generate plasma concentration is also relatively small, which reduces the purification efficiency. In addition, there is no tangential loop acceleration mechanism between the concentric arcs and the loop arc, and the magnitude matching relationship between positive and negative ions cannot be formed. Instead, a weak discharge mechanism of the convex point is formed, so a small amount of ozone and nitrogen oxides is generated. In Comparative Example 2, the through-hole contour line of the ionization electrode has only a pair of concentric arcs and a loop arc, and does not form a complete loop angle with the concentric arcs and loop arcs. Therefore, due to its asymmetric structure and uneven field structure, the purification effect is reduced. However, since its through-hole structure has no convex points and also contains four pseudo loop angles (Note: pseudo loop arcs are incomplete loop angles, i.e., only one side is connected to the loop arc and concentric arc), although the purification effect of this ionization electrode is not good, it also has a certain effect of inhibiting the production of ozone and nitrogen oxides. In Comparative Example 3, the through-hole aperture of the ionization electrode is too small, and there is no loop arc or loop angle mechanism, resulting in poor purification effect. At the same time, the small through-hole spacing causes a small amount of nitrogen oxides and ozone to be produced, proving the importance of spacing and voltage matching. The ionization electrode of Comparative Example 4 lacks the concentric arc and loop angle mechanism, resulting in unsatisfactory purification effect. In addition, there are too many bumps, which will produce weak ozone and nitrogen oxides. In Comparative Example 5, the through-hole of the ionization electrode is a concentric circle structure, without loop arcs and loop angles, and the radius is too small, resulting in weak purification effect and excessive production of nitrogen oxides and ozone.

[0095] In summary, the through hole of the ionization electrode is the main factor affecting its purification effect, ozone and nitrogen oxide production; the total proportion of the concentric arc length of the through hole contour line, the loop arc radius and the concentric arc radius and other data must be strictly defined in accordance with the technical solution of the present invention, and the loop arc, loop angle mechanism and the positive and negative electrode pressure difference of the ion need to be matched, and then cooperated with the adsorption module to enable the air purification and disinfection equipment to achieve a safer and more efficient purification effect.

[0096] In summary, the present invention provides an ionization electrode, an ionization module having the electrode, and an ion tunnel-type air purification and disinfection equipment. The ionization electrode is provided with a through hole composed of concentric arcs, loop arcs and loop angles. The loop arcs and loop angles play the role of accelerating and guiding electrons and suppressing the production of ozone and nitrogen oxides during the ionization process; the ionization module having multiple ionization electrodes and ion emission needles forms a tunnel-type ionization channel, which can form a larger amount of plasma during ionization, thereby improving the ionization purification effect of the air; the ionization module cooperates with the adsorption module, the ion module, and the wind speed control module to form an ion tunnel-type air purification and disinfection equipment. The adsorption module not only has excellent adsorption performance, but also has low wind resistance, thereby achieving low energy consumption and high adsorption purification effects. In addition to meeting the PM2.5 level of purification capabilities, this air purification and disinfection equipment can also purify PM0.3 and even PM0.1 nano-scale microparticles. It has nano-level high-efficiency purification capabilities and excellent bacteria and virus killing functions, achieving large air volume, low energy consumption, no ozone and nitrogen oxides, high performance, safe and environmentally friendly air purification effects, and a high degree of intelligence, making it suitable for different places.

[0097] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An ionization electrode sheet, characterized in that, through holes are provided on the ionization electrode sheet, and the contour line of a single through hole includes several concentric arcs with the same radius and not connected to each other, a loop arc extending tangentially in the opposite direction to any one of the concentric arcs, and a loop angle located between adjacent two loop arcs; the loop angle has a sharp angle less than or equal to 90°, and the distance from the vertex of the sharp angle to the center of the concentric arc is greater than the radius of the concentric arc, and the loop arc and the loop angle play a role in guiding and accelerating electrons.

2. The ionization electrode sheet according to claim 1, characterized in that, the loop angle is formed by the direct intersection of two adjacent loop arcs.

3. The ionization electrode sheet according to claim 1, characterized in that, the loop angle is formed by the intersection of two adjacent loop arcs and a straight line connecting these two loop arcs.

4. The ionization electrode sheet according to claim 1, characterized in that, the loop angle is formed by the intersection of two adjacent loop arcs and the free ends of two intersecting straight lines respectively.

5. The ionization electrode sheet according to claim 4, characterized in that, the two straight lines intersect perpendicularly.

6. The ionization electrode sheet according to claim 1, characterized in that, in the contour line of a single through hole, the total arc length of all the concentric arcs accounts for more than 30% of the circumference of the concentric circle where it is located.

7. The ionization electrode sheet according to claim 1, characterized in that, the radius of the loop arc is smaller than the radius of the concentric arc.

8. The ionization electrode sheet according to claim 1, characterized in that, a single through hole includes 3 to 12 segments of concentric arcs, and the number of loop angles is the same as the number of segments of the concentric arcs.

9. The ionization electrode sheet according to claim 1, characterized in that, a single ionization electrode sheet includes several through holes distributed in an array.

10. The ionization electrode sheet according to claim 8, characterized in that, the number of concentric arc segments of the through hole is an even number, and the arc lengths of two concentric arcs symmetric about the center of the concentric circle are equal.

11. The ionization electrode sheet according to claim 8, characterized in that, the arc lengths of all the concentric arcs of a single through hole are equal.

12. The ionization electrode sheet according to claim 9, characterized in that, the radius of the concentric arc is 28 to 35 mm.

13. The ionization electrode sheet according to claim 8, characterized in that, the number of segments of the concentric arcs of a single through hole is 4, and the number of corresponding loop angles is 4.

14. The ionization electrode sheet according to claim 12, characterized in that, the distance from the vertex of the sharp angle to the center of the concentric arc is 42 to 50 mm.

15. An ionization module, characterized in that, The ionization module includes a plurality of ionization electrode plates arranged at equal intervals and a conductor fixing member connecting the ionization electrode plates. The ionization electrode plates are the ionization electrode plates described in any one of claims 1 to 14. The through-hole positions of the plurality of ionization electrode plates correspond one by one to form an ionization channel with a tunnel structure. The ionization module further includes an ion emission needle with its tip located in the central point area of the ionization channel. The conductor fixing member is externally connected to a positive high-voltage emitter, and the ion emission needle is externally connected to a negative high-voltage emitter.

16. The ionization module according to claim 15, wherein, the ion emission needle is made of a metal conductor material, and the ends of a plurality of the ion emission needles are fixed to a conductor connection plate, and the conductor connection plate is connected to the negative high-voltage emitter.

17. The ionization module according to claim 16, wherein, the diameter of the ion emission needle decreases in the direction from the end connected to the conductor connection plate to the tip, and the diameter at the tip is the smallest.

18. The ionization module according to claim 16, wherein, the conductor connection plate and the conductor fixing member are nested, and an insulating layer is provided therebetween.

19. The ionization module according to claim 15, wherein, the length of the ion emission needle matches the number of the ionization electrode plates, so that the tip of the ion emission needle is located in the central point area of the ionization channel.

20. The ionization module according to claim 15, wherein, the voltage difference between the positive high-voltage emitter and the negative high-voltage emitter under no-load is 20 - 50 kV.

21. The ionization module according to claim 15, wherein, the number of the ionization electrode plates is two or more, and the distance between adjacent ionization electrode plates is 3 - 30 mm.

22. The ionization module according to claim 15, wherein, The purification air volume of a single through hole in a single ionization polar sheet is 60 to 70 m 3 .

23. An ion tunnel type air purification and disinfection device, wherein, the ion tunnel type air purification and disinfection device includes the ionization module described in any one of claims 15 to 22, and is used for efficiently generating plasma.

24. The ion tunnel type air purification and disinfection device according to claim 23, wherein, the ion tunnel type air purification and disinfection device includes a wind speed control module, a plurality of ion modules, at least one ionization module and at least one adsorption module arranged in sequence along the air flow direction. The wind speed control module is connected to the ion modules, and the wind speed control module regulates the number of working ion modules according to the wind speed introduced into the ion tunnel type air purification and disinfection device. The ion modules are respectively connected to the ionization module and the adsorption module, and provide working voltage for the ionization module and the adsorption module.

25. The ion tunnel type air purification and disinfection device according to claim 24, wherein, the ionization module is arranged such that the tip of its ion emission needle faces the adsorption module.

26. The ion tunnel type air purification and disinfection device according to claim 24, wherein, The adsorption module includes a membrane electrode group and a spacer strip for fixing the membrane electrode group. The membrane electrode group includes a positive electrode membrane electrode group and a negative electrode membrane electrode group with the same number of membrane electrodes and opposite directions. The membrane electrodes in the positive electrode membrane electrode group and the negative electrode membrane electrode group are arranged in an equidistant and staggered manner.

27. The ion tunnel type air purification and disinfection device according to claim 26, wherein, the material of the spacer strip includes one of ABS plastic, PC plastic or a composite plastic of the foregoing two, PA6 material, glass fiber reinforced PET material, PS material, PP material, PPR material.

28. The ion tunnel type air purification and disinfection device according to claim 24, wherein, the distance between the ionization module and the adsorption module is 20 - 100 mm.

29. The ion tunnel type air purification and disinfection device according to claim 24, wherein, the number of the ionization module or the adsorption module is 1 - 4; when the number of the ionization module or the adsorption module is two or more, the adsorption modules are arranged in series or in parallel.

30. The ion tunnel type air purification and disinfection device according to claim 24, wherein, the ion module includes a positive high voltage output line, a negative high voltage output line and a low voltage input line. The positive high voltage output line is connected to the ionization electrode plate of the ionization module, and the negative high voltage output line is connected to the ion emission needle.

31. The ion tunnel type air purification and disinfection device according to claim 24, wherein, the wind speed control module is arranged at the input air inlet or the output air outlet of the ion tunnel type air purification and disinfection device for monitoring the wind speed entering the ion tunnel type air purification and disinfection device.

32. The ion tunnel type air purification and disinfection device according to claim 31, wherein, the wind speed control module includes a fixing plate, an operation control circuit group arranged on the fixing plate, an input power supply terminal, a plurality of power output terminals and a wind sensor group perpendicular to the fixing plate. Any one of the power output terminals is respectively connected to an ion module; the wind sensor group is arranged facing the input air inlet or the output air outlet of the ion tunnel type air purification and disinfection device for monitoring the wind speed and transmitting a signal to the operation control circuit group, and the operation control circuit group regulates the number of working ion modules.

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