CN101920034B - Non-thermal plasma reactor - Google Patents
Non-thermal plasma reactor Download PDFInfo
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- CN101920034B CN101920034B CN 200910263782 CN200910263782A CN101920034B CN 101920034 B CN101920034 B CN 101920034B CN 200910263782 CN200910263782 CN 200910263782 CN 200910263782 A CN200910263782 A CN 200910263782A CN 101920034 B CN101920034 B CN 101920034B
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- nickel chromium
- thermal plasma
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Abstract
The invention relates to a non-thermal plasma reactor, belonging to the technical field of air disinfection and purification. The reactor comprises positive electrodes, negative electrodes and a shell, wherein the positive electrodes are arranged in the middle of two adjacent negative electrodes; and an air inlet is arranged at the front end of the shell and an air outlet is arranged at the rear end of the shell. The reactor is characterized in that the positive electrodes are made into a component in such a way that a plurality of metal wires or metal straps are arranged in the same plane and are arranged in parallel in equal distance; the negative electrodes are made of aluminium sheets or stainless steel sheets; the two ends of the positive electrodes are fixed on conductor rails preventing microdischarge; the two ends of the conductor rails are fixed with positive electrode metal supports; and each positive electrode metal stent is fixed with the shell by insulating connecting columns and is electrically connected. The reactor effectively prevents microdischarge of positive electrodes, prolongs the operation lives of the metal wires or metal straps, reinforces the concentration of the plasmas generated by the reactor and saves energy. The reactor is widely applied to non-thermal plasma air disinfection purifiers.
Description
Technical field:
The invention belongs to technical field of air sterilization and purification, be specifically related to non-thermal plasma reactor.
Background technology:
The non-thermal plasma reactor that existing air disinfection purifier is used mainly is comprised of anelectrode, negative electrode and shell.The structure of anelectrode has tinsel, zigzag or prong shape several.
Plasma formed by a large amount of positive and negative charged particles and neutral particle and show collective's electric field action, electric charge integral body is the gas cloud of quasi-neutrality.Plasma consists of serious the puncture and destruction to bacterial cell membrane; Be that it can open the gas molecule key again, generate monoatomic molecules, negative oxygen ion, OH ion and free oxygen atom, H
2O
2Deng free radical, have extremely strong activation and oxidability.It has very strong lethality to antibacterial, virus.The macromolecule toxic organic compounds such as it can also decomposing formaldehyde, benzene, radon, ammonia, carbon monoxide, flue gas, TVOC change into the low nonpoisonous and tasteless inorganic matter of molecule, such as charcoal, water etc.The inner plasma reactor that arranges contains electrostatic field, can adsorb little particulate matter to the 0.1um particle diameter, further purifies air.
All be in room temperature, atmospheric pressure state for room air, select resistance to oxidation fine wire, zigzag or prong shape structure as the discharge anelectrode, select the resistance to oxidation metallic plate as negative electrode, the reactor of the extremely asymmetric discharge electrode of this class is made corona discharge generation Athermal plasma and is carried out air disinfection and purification.The fine wire corona discharge is even, and it ought to be a kind of preferential producing non-thermal plasma bulk concentration height.
The advance of non-thermal plasma air disinfection purification techniques is approved by expert scholar that the science of its disinfectant mechanism and advance are unrivaled, is referred to as in the world one of " 21st century environmental science four large technology ".But it is also rare to apply on the market, makes slow progress.Existing Filtration Adsorption, high-pressure electrostatic, ozone, ultraviolet and TiO
2The air disinfection purifiers such as photocatalysis all respectively have pluses and minuses at sterilizing, decomposition toxic organics and filtration dust granules thing three aspects:, the equal imperfection of sterilizing and purifying air but still is widely adopted in various big hospital, office block, market, place of public amusement; Even food factory, pharmaceutical factory and semiconducter IC manufacturing industry are mostly selected the FFU air filter unit.Although its air purification effect when new the installation is good; But energy consumption is large, noise is high, and maintenance cost is expensive, and the anxiety of secondary pollution is arranged again, exactly occupies very big market.
Trace it to its cause is that present non-thermal plasma reactor design is unreasonable: select plasma density that fine wire produces high although consist of the discharge anelectrode of non-thermal plasma reactor, be blown easily; For this reason, the discharge anelectrode selects rustless steel to make zigzag or prong shape structure mostly.Although zigzag or prong shape are not easy to be blown, point discharge that they are in forms the discharge multiple abscess, and can see in the darkroom has between anelectrode and the negative electrode that a purplish blue light fine rule about Φ 0.2mm--this is the aerial discharge non-uniform phenomenon.Plasma density is high near purplish blue light, and airborne oxygen and nitrogen are activated easily, generates the unfavorable factors such as ozone and nitrogen oxide; And it is low to leave purplish blue light plasma density slightly at a distance, and the air disinfection and purification effect is just poor.The Disinfection Effect of this class reactor is subjected to the restriction of ozone and nitrous oxides concentration, and this also is that present professional and technical personnel feels a most thorny difficult problem.Also have a major defect be work less than some months, zigzag or prong shape discharge tip are because of the splash effect rust.Because the radius of curvature of anelectrode is larger, discharge inception voltage is higher, and discharge current reduces thereupon, and air disinfection and purification efficient can reduce certainly.This decay is subtle, and the plasma density reduction is not easy to be found by user; Although reactor also in work, performs practically no function.This uses in hospital operating room, serious symptom ward and will because of the defective bacteriovirus infection accident that occurs of sterilizing, cause the failure of operative treatment.
For example: Chinese invention patent application number is 200710038821.4, and denomination of invention " assembly modular type systyle electrostatic field device " description homepage just proposes: " the fine rule easily defective of broken string has greatly affected the reliability of device." in the technical scheme of this invention, propose: a kind of assembly modular type systyle electrostatic field device; comprise discharge electrode (discharge electrode is positive pole), dust collector pole (receive electrode and be negative pole) and insulator; discharge electrode and dust collector pole spaced and parallel are arranged; the discharge electrode two ends connect the discharge electrode connector; the bottom of discharge electrode is zigzag; the top of discharge electrode is tubulose, zigzag discharge electrode and dust collector pole form dust collection section, the dust collector pole two ends connect receives electrode connecting parts, and discharge electrode connector and receipts electrode connecting parts are connected on the insulator.
And for example: Chinese invention patent application number is 200810165890.6, and the electrode that denomination of invention " a kind of electrode of high-efficient air purification device driven by electric dissociation and circuit " discloses air cleaner is the technical scheme of tip-like ionization pole.
The reality of " the discharge anelectrode that consists of non-thermal plasma reactor selects fine wire to produce the plasma density height; still be blown easily " is all considered in above-mentioned two inventions, just helplessly selects the anelectrode of zigzag or prong shape to make plasma reactor.
For another example: Chinese invention patent application number is 200610024299.X, state clearly in denomination of invention " ionization type gas purifier " claims: a kind of ionization type gas purifier is individually fixed on the insulation board by the negative electrode of several equal length and anode two ends and forms, and consists of square type electric field; The anode is here pressed the ranks form and is arranged, and two ends vertically are fixed in respectively on two insulation boards; Anode adopts the strong tinsel of corrosion-resistant toughness, and diameter is 0.05～0.2mm, and negative electrode adopts copper or stainless pipe, diameter 8～30cm.
The anode of the ionization type gas purifier of foregoing invention is to adopt the strong tinsel of corrosion-resistant toughness, and the anode is here pressed the ranks form and arranged, and two ends vertically are fixed in respectively on two insulation boards.Because the Multipactor between anode and the insulation board, the anode metal silk some months of only working will be blown.
In the prior art: the basic reason that the anelectrode of plasma reactor selects fine wire to be blown easily--Multipactor is not found, and is indefinite to its reason physically yet, thereby just can not find the technical scheme that solves the prevention Multipactor yet.Abandoning the fine wire anelectrode and selecting the technical scheme of zigzag discharge electrode or tip-like ionization pole is a kind of prejudice.Everyly implementing the manufacturer that plasma reactor discharge anelectrode is selected the air disinfection purifier of zigzag or prong shape structure, majority was made tinsel as the plasma reactor of anelectrode in the past; And perplexed by air disinfection and purification effect and ozone and nitrous oxides concentration this a pair of contradiction that exceeds standard now.That is to say that sterilizing test scrapes through, and the ozone flavor is dense, wants to meet among the GB/T18883-2002 " IAQ (indoor air quality) standard " about air ozone amount≤0.16mg/m
3Regulation be difficult.
What is more, simply plasma reactor is also abandoned, make prong shape electrode into and make the electronics electrostatic adsorption type of static discharge, it can only adsorb dust, decompose the more too late plasma reactor of toxic organic compound ability, would rather sacrifice the sterilizing and purifying effect, with reliability and the working life that exchanges disinfection purifier for.
Summary of the invention:
The present invention finishes in order to solve above-mentioned problem, a kind of good reliability, long working life, generation plasma density height are provided in order to solve above-mentioned the deficiencies in the prior art and prejudice especially, improve the non-thermal plasma reactor of air disinfection and purification efficient.
The test of design non-thermal plasma reactor preferred plan shows: zigzag or tip-like reactor are made corona discharge at top place; And tinsel or metal tape are to make corona discharge around silk, band, and uniformity and the concentration of the plasma that under equal conditions produces are significantly superior, and the present invention is as preferential.
In order to achieve the above object, at first must find out " basic reason that the plasma reactor anelectrode selects fine wire to be blown easily ".Through investigation and analysis: present most technical staff are in order to solve the high-tension Insulation Problems of volt up to ten thousand between the plasma reactor positive and negative electrode, select the insulant such as plastics, lucite, epoxy resin to make directly fixing plasma reactor positive and negative electrode wiry of support; What minority was also arranged has added hairspring between insulating support and wire electrode.Studies show that: the insulant that dielectric constant is high is beneficial to the positive and negative electrode of isolation high potential, and deadly defect is to produce the micro discharge phenomenon; Next is that its surface is caused electric leakage, climbed arc with the accumulation of atmospheric humidity, dust along with the working time increases.The material that dielectric constant is higher, its surperficial micro discharge phenomenon are more inevitable.In order to promote the sterilizing and purifying effect, when the additional power source voltage rising of plasma reactor, its polarity effect is corresponding enhancing also.Be the highfield that forms around the anelectrode, under the catalytic action of plasma, cause the local micro discharge that produces of tinsel and insulant contact area.The high energy electron that this micro discharge phenomenon produces plays direct effect to ionization and the disassociation of insulant and metallic conduction material molecule, and catabolite is their oxide and water.The root place that the discharge anelectrode of Here it is plasma reactor selects fine wire to be blown easily.
The inventor selects same specification high-voltage pulse power source, specially to thread, banded, zigzag and the anodal non-thermal plasma reactor of making of tip-like discharge in closed chamber simultaneously continuously energising compare test, day and night detection.Work only fortnight, zigzag and tip-like reactor operating current obviously descend; Fracture of wire appears in six week of fadenreaction device work; Band shape is relatively stable.But all reactor bottoms all flow has expired atrous mucus; All there is the creepage vestige of yellow black on insulant surface between the positive and negative electrode, and the sign that is corroded also appears in the rustless steel positive electrode surface in this district.It is also similar to have added the phenomenon that the reactor of hairspring occurs between insulating support and tinsel anelectrode, and hairspring and tinsel rupture time only postponed about two, three months.This is that otherwise tinsel is broken easily or spring is inoperative because spring does not allow too slightly.Even this spring rustless steel is made and also is unable to escape the misfortune that is corroded because of micro discharge.
In above-mentioned prior art plasma reactor senile experiment device, the interaction on this plasma and metal, insulant surface produces the impact of micro discharge, at first make the fraction plasma because micro discharge pollutes, and reduced plasma density, the reactor work efficiency is reduced; While also damages the structure of reactor, has shortened service life.Therefore the effect in plasma reactor is researched and analysed to this micro discharge mechanism, the marrow that to propose practicable technological improvement new departure be the invention.
Airborne plasma mainly is the interaction on tinsel (comprising hairspring) and insulant surface to show in the plasma reactor, owing to corona discharge to the activation on fine wire and insulant surface strong absorption, thermal desorption, electronics desorbing and photodesorption occurs.
When ion or neutral particle incided fine wire and insulant surface, its part energy was passed to the minority target atom simultaneously, and wherein some launched the sputter of generation before dot matrix reaches thermal balance.These basic processes are simultaneous, and finish in moment.
Next is the arcing distance between design anelectrode of the present invention and the negative electrode.This relates to safety and the price quality ratio of complete machine, and arcing distance is got 8～18mm, and corresponding pulse voltage is 8～18KV, and most electronic devices and components, parts can both be competent at.
It three is design anelectrode nickel chromium triangle wire diameter of the present invention or nickel chromium triangle metal tape thickness.The anelectrode wire diameter is thinner, and discharge inception voltage is lower, and plasma density is higher; But take into account mechanical strength and working life, the nickel chromium triangle wire diameter is that 0.1～0.3mm or nickel chromium triangle metal tape thickness are 0.05～0.3mm for well.
The spacing of design each anelectrode of the present invention at last.Test shows and should select optimum from the mutual shielding action of electric field two aspects between the arcing distance between anelectrode and the negative electrode and the anelectrode that preferable range of the present invention is 16～26mm.
All these experimental observation results confirm that above-mentioned to research and analyse conclusion realistic, propose the present invention for this reason and newly design--stop the technical scheme of the non-thermal plasma reactor operability of micro discharge.
In order to achieve the above object, a kind of non-thermal plasma reactor that the present invention is designed, comprise anelectrode, negative electrode and shell, the upper and lower both sides of negative electrode are fixed in the metal shell, the shell front end is provided with air inlet, outer casing back is provided with air outlet, anelectrode places adjacent two negative electrode middle parts, anelectrode and negative electrode be arranged in parallel by airflow direction, it is characterized in that described anelectrode is to be located in the same plane by some resistance to oxidation tinsels or metal tape to make an assembly by equidistant being arranged in parallel, amount to the n group; Described negative electrode is that aluminium sheet or corrosion resistant plate are made, and amounts to the n+1 piece; The two ends of the anelectrode that some resistance to oxidation tinsels or metal tape are made are to be fixed on to stop on the micro discharge conductor rail, and the two ends that stop the micro discharge conductor rail are fixed with four anelectrode metal racks that quadrature is arranged on around the reactor again, and make electric connection; The outer rim of anelectrode metal rack is provided with several prevention micro discharge conductor rail ring for fixings cylindraceous, stops the equally spaced adjacent prevention micro discharge conductor rail of micro discharge conductor rail ring for fixing; The upper/lower terminal of every anelectrode metal rack is established an insulation joint pin, and when the insulation joint pin was set diameter greater than anelectrode and negative electrode arcing distance, directly the installing hole corresponding with metal shell fixed.When the insulation joint pin is set diameter less than anelectrode and negative electrode arcing distance, by insulation joint pin gim peg the insulation joint pin is fastened on the metal shell.
Preferentially the described prevention micro discharge of non-thermal plasma reactor of the present invention conductor rail is to be made by aluminium bar or stainless steel strip, the two ends of some anelectrodes are fixed on and stop the correspondence position of micro discharge conductor rail to be provided with recessed grain, and it is fixing also can be arranged to the protruding tip or elastic stainless steel sheet location; The aspect ratio anelectrode of described insulation joint pin and the large 5～8mm of arcing distance between the negative electrode; Insulation joint pin gim peg is the bolt of being made by rustless steel.
Preferentially non-thermal plasma reactor of the present invention is that described what make anelectrode is by sludge proof high-resistance electrothermic alloy nickel chromium triangle tinsel or nickel chromium triangle metal tape, also can be that the Aludirome material is made; The wire diameter of anelectrode is 0.1～0.3mm, or the metal tape width is 0.5～5mm, and thickness is 0.05～0.3mm, and metal tape thickness is the platen surface setting that the end face of 0.05～0.3mm is aimed at negative electrode.
Preferentially non-thermal plasma reactor of the present invention is that the described aluminium plate thickness of making negative electrode is 0.5～2.0mm, surface oxidation treatment; Or the corrosion resistant plate thickness of making negative electrode is 0.3～1.5mm.
Preferentially non-thermal plasma reactor of the present invention is that described anelectrode is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape, makes an assembly by equidistant arrangement in 16～26mm scope.
Preferentially non-thermal plasma reactor of the present invention is that the arcing distance scope of design between described anelectrode and the negative electrode is 8～18mm.
Preferentially non-thermal plasma reactor of the present invention is that described anelectrode is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape, makes an assembly by the equidistant arrangement of 22mm optimum; Optimal discharge distance between anelectrode and the negative electrode is 12mm.
Preferentially non-thermal plasma reactor of the present invention is that the nickel chromium triangle tinsel of described anelectrode or the trade mark of nickel chromium triangle metal tape are the high-resistance electrothermic alloy of Cr20Ni80, and the trade mark that also can be the ferrum-chromium-aluminum material is the high-resistance electrothermic alloy of 0Cr27A17Mo2; The wire diameter optimum is 0.20mm, or the metal tape optimum width is 2mm, and thickness is 0.10mm.
The present invention compared with prior art has following beneficial effect:
The designed a kind of non-thermal plasma reactor anelectrode of the present invention is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape to make an assembly by equidistant being arranged in parallel, and described negative electrode is that aluminium sheet or corrosion resistant plate are made.Because being fixed on, the two ends of the anelectrode that some nickel filaments or nickel chromium triangle metal tape consist of stop on the micro discharge conductor rail, away from the insulation joint pin; Be that the two ends that stop the micro discharge conductor rail are fixed with four anelectrode metal racks that quadrature is arranged on around the reactor again again, and make electric connection.The result is that the insulation joint pin only is that an end face is by stoping the micro discharge conductor rail to contact with the anelectrode metal rack again.So compared with prior art, its Multipactor can be ignored substantially.The cross section that is noted that especially prevention micro discharge conductor rail is much bigger compared with nickel filament or nickel chromium triangle metal tape, even there is faint Multipactor, also can not affect plasma reactor normal operation and working life thereof.Overcome " fine rule is the defective of broken string easily ", corrected and " would rather sacrifice the sterilizing and purifying effect, abandon the anelectrode of fine wire and select zigzag discharge electrode or tip-like ionization pole with the reliability that exchanges disinfection purifier for and the technology prejudice of working life." be that the anodal high-voltage conducting wires of the strict external direct current power supply of safety coefficient can be connected to any one nearby and stops on the micro discharge conductor rail the whole electric connections of anelectrode that all nickel filaments or nickel chromium triangle metal tape are consisted of again; The cathode conductor coupled reaction device metal shell earthing line of external direct current power supply has both electromagnetic shielding action, meets EMC Requirements.
Anelectrode metal rack outer rim of the present invention is provided with the ring for fixing that stops the micro discharge conductor rail, and the length of ring for fixing is set by the requirement that reduces the mutual shielding action of same polarity electromagnetic field.Like this can equally spaced adjacent prevention micro discharge conductor rail, mounting process is simple; Importantly make the mutual shielding action of electromagnetic field between the anelectrode that some nickel filaments or nickel chromium triangle metal tape consist of be reduced to floor level, make every nickel filament or nickel chromium triangle metal tape in the direct current highfield, make stable corona discharge, obtain the high concentration plasma.
The upper/lower terminal of every anelectrode metal rack of the present invention is established an insulation joint pin installing hole corresponding with shell and is fixed, and by insulation joint pin gim peg the insulation joint pin is fastened on the shell; The upper/lower terminal of described negative electrode is to be fixed on the outer casing inner wall, and makes electric connection.So, the anelectrode that some nickel filaments or nickel chromium triangle metal tape consist of, stop micro discharge conductor rail and four anelectrode metal racks and plasma reactor shell precision to join together, and insulating properties are good.Because the upper and lower both sides of negative electrode also are fixingly to guarantee that anelectrode places adjacent two negative electrode middle parts during integral installation so in the enclosure, make discharge even; Also make the overall structure of plasma reactor firm, distance also guarantees constant between anelectrode and the negative electrode.
According to the said structure design, metal shell the right and left of the present invention and negative electrode balance portion have the negative electrode effect simultaneously concurrently, omit two negative electrode plates, make the overall structure of plasma reactor compacter, and be simple, obtains beyond thought effect.
The present invention has good reliability, long working life, generation plasma density height, improves air disinfection and purification efficient.
The present invention is the plasma air disinfection purifier core component, its external DC high-voltage power supply and blower fan, the positive pole of dc high-voltage source output terminal and the anelectrode of plasma reactor are made electric connection, and the negative pole of dc high-voltage source output terminal and the negative electrode of plasma reactor are made electric connection; Plasma reactor is arranged between the air inlet and blower fan of air disinfection purifier.Plasma air disinfection purifier has the broad-spectrum sterilization effect: to staphylococcus aureus, escherichia coli, bacillus subtilis, read the viruses such as strain bacterium, mycete and mycoplasma, hepatitis B, influenza in vain efficient killing rate is all arranged.Have simultaneously dedusting, the raw meat of dehematizing, the function of removing the organic exhaust gas such as abnormal flavour, degradation of formaldehyde, smog and TVOC.The present invention mixes suitable DC high-voltage power supply and blower fan, at 100m
3Office work 30min, after testing: the killing rate of white, staphylococcus aureus is 99.9%; Total plate count :≤200cfu/m
3Abnormal flavour clearance: 〉=96%; Suspended particles number :≤3500/L (Φ 〉=0.5 μ m); The formaldehyde clearance reaches 99.8%; Retain ozone amount≤0.05mg/m in the air
3Energy-conservation is apparent: 100m
3The indoor health ministry that reaches is about the II of hospital class surrounding air disinfection standard, and the consumed power of the air disinfection purifier that the present invention makes is 7--8W, and reaches the ultraviolet of effect same and the energy consumption of ozone is at least 160W.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the axonometric chart of the embodiment of the invention 1;
Fig. 3 is the structural representation of the embodiment of the invention 2;
Fig. 4 is the axonometric chart of the embodiment of the invention 2;
Fig. 5 is positive electricity of the present invention discharge work very wiry sketch map;
Fig. 6 is the very discharge work sketch map of metal tape of positive electricity of the present invention;
Fig. 7 is the timing chart of external dc high voltage power supply of the present invention.
The critical piece description of reference numerals:
1-plasma reactor 2-DC high-voltage power supply
101-anelectrode 102-negative electrode
103-stops micro discharge conductor rail 104-anelectrode metal rack
105-insulation joint pin 106-insulation joint pin gim peg
107-conductor rail ring for fixing 108-shell
109-air inlet 110-air outlet
The specific embodiment:
With reference to the accompanying drawings embodiments of the invention are described in further detail.
Embodiment 1:
Fig. 1 is the structural representation of the embodiment of the invention 1, and Fig. 2 is the axonometric chart of the embodiment of the invention 1.A kind of non-thermal plasma reactor that the present invention is designed comprises anelectrode 101, negative electrode 102 and shell 108, and the upper and lower both sides of negative electrode 102 directly are fixed in the metal shell 108.Shell 108 front ends are provided with air inlet 109, and shell 108 rear ends are provided with air outlet 110, and air inlet and air outlet are equipped with air filter.Anelectrode 101 places adjacent two negative electrode 102 middle parts, and anelectrode 101 and negative electrode 102 be arranged in parallel by airflow direction.Described anelectrode 101 is to be located in the same plane by some nickel chromium triangle tinsels to make an assembly by equidistant being arranged in parallel, and amounts to n group (n is 100 following integers).Negative electrode 102 is that aluminium sheet or corrosion resistant plate are made, and amounts to the n+1 piece.Negative electrode 102 also other metal sheet surface such as available iron, copper is coated with nickel chromium triangle and substitutes, but price quality ratio is not as aluminium sheet or corrosion resistant plate.The corona discharge electric field of some nickel chromium triangle anelectrodes 101 wiry is radially to be evenly distributed all around along wiry; And the anelectrode of zigzag and tip-like when in reactor, working only in the discharge of top place, discharge electric field is extremely inhomogeneous, top being in of zigzag and tip-like can see in the darkroom that luminous bright spot is exactly illustration.Select in force the reactor with the above-mentioned different structure anelectrode of volume, the positive and negative electrode arcing distance is also identical, comprise the conditions such as power configuration, the plasma density that the reactor that nickel chromium triangle anelectrode 101 wiry is made produces is more than three times of reactor of zigzag or tip-like anelectrode, and the ozone index of measuring be lower than zigzag or tip-like the anelectrode reactor 1/4th, meet country about the air ozone amount≤0.16mg/m in " IAQ (indoor air quality) standard "
3Regulation.
The two ends of the anelectrode 101 of the some nickel filaments that the present invention is designed are to be fixed on to stop on the micro discharge conductor rail 103, stop the two ends of micro discharge conductor rail 103 to be provided with circular hole, aim at again and be arranged on the anelectrode metal rack 104 that four round screw rods around the reactor make with quadrature and bore a hole and mistake, accurate fixing, and make electric connection.Stop the two ends of micro discharge conductor rail 103 also can adopt welding or riveted joint with anelectrode metal rack 104, effect is equal to and technique complexity slightly.
Designed anelectrode metal rack 104 outer rims of the present invention are provided with the ring for fixing 107 that stops the micro discharge conductor rail, equally spaced prevention micro discharge conductor rail 103, and the length of ring for fixing is set by the requirement that reduces the mutual shielding action of same polarity electromagnetic field.Test shows: adjacent two anelectrodes distance too small when 12mm (this example＜), because the mutual shielding action of same polarity electromagnetic field causes corona discharge faint; But, distance excessive when 30mm (this example＞), it is large to take up room, and plasma density is descended.Stoping micro discharge conductor rail 103, anelectrode metal rack 104 and conductor rail ring for fixing 107 all is to be made by aluminum or stainless steel material.Conductor rail ring for fixing 107 diameter of bores are greater than anelectrode metal rack 104 external diameter 0.2mm.
The upper/lower terminal of the every anelectrode metal rack 104 that the present invention is designed is provided with insulation joint pin 105 and shell 108 corresponding installing holes and fixes, and by insulation joint pin gim peg 106 joint pins 105 that insulate is fastened on the shell 108.The upper/lower terminal of negative electrode 102 is to be fixed on metal shell 108 inwalls, and makes electric connection.Insulation joint pin 105 is made by the plastic-embedded metalwork, and matches with the screw thread at anelectrode metal rack 104 two ends.When insulation joint pin 105 was set diameter greater than anelectrode and negative electrode arcing distance, directly the installing hole corresponding with metal shell fixed.When insulation joint pin 105 is set diameter less than anelectrode and negative electrode arcing distance, be fastened on the metal shell 108 by 106 insulation of insulation joint pin gim peg joint pin 105.
Embodiment 2:
Fig. 3 is the structural representation of the embodiment of the invention 2, and Fig. 4 is the axonometric chart of the embodiment of the invention 2.
A kind of non-thermal plasma reactor that the present invention is designed, comprise anelectrode 101, negative electrode 102 and shell 108, the upper and lower both sides of negative electrode 102 directly are fixed in the shell 108, shell 108 front ends are provided with air inlet 109, shell 108 rear ends are provided with air outlet 110, and anelectrode 101 places adjacent two negative electrode 102 middle parts, and anelectrode 101 and negative electrode 102 be arranged in parallel by airflow direction.Described anelectrode 101 is to be located in the same plane by some nickel chromium triangle metal tapes to consist of an assembly by equidistant being arranged in parallel, and amounts to the n group; Described negative electrode 102 is that aluminium sheet or corrosion resistant plate consist of, and amounts to the n+1 piece, comprises shell 108 left and right sides plates.The two ends of the anelectrode 101 of some nickel chromium triangle metal tape formations are to be fixed on to stop on the micro discharge conductor rail 103, and the two ends of prevention micro discharge conductor rail 103 are arranged on reactor four anelectrode metal racks 104 all around with quadrature again and fix, and make electric connection.Anelectrode metal rack 104 outer rims are provided with the ring for fixing 107 that stops the micro discharge conductor rail, equally spaced prevention micro discharge conductor rail 103.The upper/lower terminal of every anelectrode metal rack 104 is provided with insulation joint pin 105 and shell 108 corresponding installing holes and fixes, and by insulation joint pin gim peg 6 joint pins 5 that insulate is fastened on the shell 8.The upper/lower terminal of described negative electrode 102 is to be fixed on metal shell 108 inwalls, and makes electric connection.Thickness and the nickel chromium triangle wire diameter of the nickel chromium triangle metal tape of anelectrode 101 are similar, but the width of nickel chromium triangle metal tape is the several times of nickel chromium triangle wire diameter.When anelectrode is made corona discharge in reactor, under the identical state of the caused export license of sputter, its working life also will prolong several times.
Present embodiment and anelectrode difference wiry are that the metal tape width is about 20 times wiry, and after corona discharge caused that sputter causes export license, metal tape loss place was because of damaged far away apart from negative electrode, and discharge current reduces naturally; Otherwise the less position of metal tape loss discharge current increases automatically.So, export license is in the self regulation state, further prolongs its working life, obtains beyond thought effect.
Embodiment 3:
Prevention micro discharge conductor rail 103 of the present invention is to be made by aluminium bar or stainless steel strip, and the two ends of the anelectrode 101 that some nickel filaments or nickel chromium triangle metal tape are made are fixed in the groove that stops correspondence position on the micro discharge conductor rail 103 and are located.The second embodiment is that correspondence position is established dowel on the prevention micro discharge conductor rail 103, and fixed trap is established on dowel in the two ends of anelectrode 101, is strained and fixed.The third embodiment is to stop a correspondence position setting position elastic sheet metal on the micro discharge conductor rail 103, and fixed trap is established on elastic sheet metal top, location in the two ends of anelectrode 101, is strained and fixed.The aspect ratio anelectrode 101 of insulation joint pin 105 and the large 5～8mm of arcing distance between the negative electrode 102; Anelectrode 101 can not discharged to upper and lower two blocks of side plates of metal shell 108.Insulation joint pin gim peg 106 is bolts of being made by rustless steel.
Embodiment 4:
Nickel chromium triangle tinsel or the nickel chromium triangle metal tape of making anelectrode 101 of the present invention is high-resistance electrothermic alloy; The nickel chromium triangle wire diameter of anelectrode 101 is 0.1～0.3mm, or nickel chromium triangle metal tape width is 0.5～5mm, and thickness is 0.05～0.3mm; Nickel chromium triangle metal tape thickness is that the end face of 0.05～0.3mm is aimed at negative electrode (102) setting, and during the metal tape discharge loss, its discharge end face surface area remains unchanged, and useful working life can reach 8--12.The another kind of technical scheme of present embodiment is that described anelectrode 101 is to make tinsel or metal tape by the ferrum-chromium-aluminum material, and overall dimensions is identical with such scheme, and just cost is lower slightly, and performance is slightly poor.
Embodiment 5:
The aluminium plate thickness of making negative electrode 102 of the present invention is 0.5～2.0mm, surface oxidation treatment, and long working life, outward appearance is beautiful; Or the corrosion resistant plate thickness of making negative electrode 102 is 0.3～1.5mm, and structure is lightly firm.The upper/lower terminal of negative electrode 102 is established protuberance, and groove is established in the upper and lower biside plate corresponding position of shell 108, and both insert accurate fixing.Also can be welding, riveting fixes, complex process just, it is large that the position error ratio is established the groove scheme.
Embodiment 6:
Embodiment 7:
Embodiment 8:
The nickel chromium triangle tinsel of anelectrode 101 or the trade mark of nickel chromium triangle metal tape are the high-resistance electrothermic alloy of Cr20Ni80; Nickel chromium triangle wire diameter optimum is 0.20mm, or nickel chromium triangle metal tape optimum width is 2mm, and thickness is 0.10mm.Present embodiment can be selected the ferrum-chromium-aluminum material of same specification, and the trade mark is the high-resistance electrothermic alloy of 0Cr17A17Mo2, the like product that similar Shanghai three broadcasting and TV worker alloy company limiteies are made, and its maximum operation (service) temperature is 1400 ℃, resistance to oxidation.
Fig. 5 is positive electricity of the present invention discharge work very wiry sketch map, and Fig. 6 is the very discharge work sketch map of metal tape of positive electricity of the present invention, and Fig. 7 is the timing chart of external dc high voltage power supply of the present invention.The external DC high-voltage power supply 2 of the present invention and blower fan, the positive pole of dc high-voltage source output terminal and the anelectrode of plasma reactor 101 are made electric connection, and the negative pole of DC high-voltage power supply 2 outfans and the negative electrode 102 of plasma reactor are made electric connection.Plasma reactor is arranged between the air inlet and blower fan of air disinfection purifier, anelectrode 101 and negative electrode 102 be arranged in parallel by airflow direction.No matter be not difficult to find out, be tinsel or the metal tape of anelectrode 101, all much even than the reactor of zigzag or tip-like anelectrode for negative electrode 102 discharges.The present invention can make round-the-clock sterilizing and purifying to room air under dynamic situation, to human body and electric equipment without any harm.
The above only is that the embodiment with reference to accompanying drawing has done to further specify to non-thermal plasma reactor of the present invention, is not limitation of the invention.In technical concept scope of the present invention, those skilled in the art can by stoping the micro discharge technology contents to make the variety of way simple deformation that comprises material or be equal to alternatively in the plasma reactor of above-mentioned announcement, all belong in the scope of technical solution of the present invention.For example: described anelectrode is some nickel chromium triangle tinsels or nickel chromium triangle metal tape, can change molybdenum, tungsten into and make rib type, ellipse, triangle and do to be equal to alternative.But oxidation resistent susceptibility is poor in the mechanical strength of molybdenum, tungsten material and the air, rib type, ellipse, leg-of-mutton anelectrode processing difficulties.Described prevention micro discharge conductor rail can substitute with the metallic elastic sheet of metal tube or thickening, overstriking, the simple deformation of spring, but has lost due elastic reaction, and manufacturing process complicates, cost up; And effect still is equal to the prevention micro discharge conductor rail that aluminium bar or stainless steel strip are made.Four anelectrode metal racks can be reduced to two even one, the electric connection difficulty of this structure, and poor electric contact appears in the long-time running meeting.The conductor rail ring for fixing can substitute with nut, prevention micro discharge conductor rail is fixed on the anelectrode metal rack, but time-consuming in the manufacture process, and distance also is difficult to control between the anelectrode.Negative electrode can be to be coated with copper coin, the iron plate that nickel is coated with chromium to be substituted, and still can not avoid oxidized, and performance is less than aluminium sheet or corrosion resistant plate, and has prolonged the production cycle.It only is for example that the simple deformation of above-mentioned variety of way or be equal to substitutes.Self-evident, all belong in the technical concept scope of the present invention, can't depart from spirit of the present invention or surmount the scope of appended claims definition, more what imitative technical performance is all less than preferential embodiment of the present invention.
Claims (8)
1. non-thermal plasma reactor, comprise anelectrode (101), negative electrode (102) and shell (108), negative electrode (102) upper, lower both sides are fixed in the metal shell (108), shell (108) front end is provided with air inlet (109), shell (108) rear end is provided with air outlet (110), anelectrode (101) places adjacent two negative electrodes (102) middle part, anelectrode (101) and negative electrode (102) be arranged in parallel by airflow direction, it is characterized in that described anelectrode (101) is to be located in the same plane by some sludge proof tinsels or metal tape to make an assembly by equidistant being arranged in parallel, amount to the n group, n is 100 following integers; Described negative electrode (102) is that aluminium sheet or corrosion resistant plate are made, and amounts to the n+1 piece; The two ends of the anelectrode that some wire or metal tape are made (101) are to be fixed on to stop on the micro discharge conductor rail (103), the two ends of prevention micro discharge conductor rail (103) are arranged on reactor four anelectrode metal racks (104) all around with quadrature again and fix, and make electric connection; The outer rim of anelectrode metal rack (104) is provided with several prevention micro discharge conductor rail ring for fixings cylindraceous (107), stops the equally spaced adjacent prevention micro discharge conductor rail (103) of micro discharge conductor rail ring for fixing (107); The upper/lower terminal of every anelectrode metal rack (104) is established insulation joint pin (a 105) installing hole corresponding with shell (108) and is fixed.
2. non-thermal plasma reactor according to claim 1, it is characterized in that described prevention micro discharge conductor rail (103) is to be made by aluminium bar or stainless steel strip, the two ends of some anelectrodes (101) are fixed on and stop the correspondence position of micro discharge conductor rail (103) to be provided with groove, or are arranged to the protruding tip or elastic stainless steel sheet location is fixing; The aspect ratio anelectrode (101) of described insulation joint pin (105) and the large 5～8mm of arcing distance between the negative electrode (102); Insulation joint pin gim peg (106) is the bolt of being made by rustless steel.
3. non-thermal plasma reactor according to claim 1, it is characterized in that making anelectrode (101) is to be made by sludge proof high-resistance electrothermic alloy nickel chromium triangle tinsel or nickel chromium triangle metal tape, or the Aludirome material is made; The wire diameter of anelectrode (101) is 0.1～0.3mm, or the metal tape width is 0.5～5mm, and thickness is 0.05～0.3mm, and metal tape thickness is the platen surface setting that the end face of 0.05～0.3mm is aimed at negative electrode (102).
4. non-thermal plasma reactor according to claim 1, the aluminium plate thickness that it is characterized in that making negative electrode (102) is 0.5～2.0mm, surface oxidation treatment; Or the corrosion resistant plate thickness of making negative electrode (102) is 0.3～1.5mm.
5. non-thermal plasma reactor according to claim 1, it is characterized in that described anelectrode (101) is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape, anelectrode (101) is to make an assembly by equidistant arrangement in 16～26mm scope.
6. non-thermal plasma reactor according to claim 1 is characterized in that the arcing distance scope of design between described anelectrode (101) and the negative electrode (102) is 8～18mm.
7. according to claim 1,5 or 6 described non-thermal plasma reactors, it is characterized in that described anelectrode (101) is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape, makes an assembly by the equidistant arrangement of 22mm optimum; Optimal discharge distance between anelectrode (101) and the negative electrode (102) is 12mm.
8. according to claim 1 or 3 described non-thermal plasma reactors, it is characterized in that the nickel chromium triangle tinsel of described anelectrode (101) or the trade mark of nickel chromium triangle metal tape are the high-resistance electrothermic alloy of Cr20Ni80, or the trade mark of ferrum-chromium-aluminum material is the high-resistance electrothermic alloy of 0Cr27A17Mo2; The wire diameter optimum is 0.20mm, or the metal tape optimum width is 2mm, and thickness is 0.10mm.
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| CN106686873B (en) * | 2017-03-04 | 2024-02-23 | 绍兴上虞阿特兰迪电器有限公司 | Detachable non-thermal plasma reactor |
| CN113747647B (en) * | 2021-08-16 | 2023-03-14 | 西安交通大学 | Double-grid-surface type uniform plasma generator and preparation method thereof |
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