CN201643058U - Air sterilization purifier of optimal combination of plasma and titanium dioxide - Google Patents
Air sterilization purifier of optimal combination of plasma and titanium dioxide Download PDFInfo
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- CN201643058U CN201643058U CN2009202156875U CN200920215687U CN201643058U CN 201643058 U CN201643058 U CN 201643058U CN 2009202156875 U CN2009202156875 U CN 2009202156875U CN 200920215687 U CN200920215687 U CN 200920215687U CN 201643058 U CN201643058 U CN 201643058U
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 37
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 31
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The air sterilization purifier of the optimal combination of the plasma and the titanium dioxide belongs to the air sterilization purification field. The purifier comprises a plasma reactor, a pulse power source, a blower fan assembly, an air inlet, an air outlet and an outer casing. The air filters are arranged on the air inlet and the air outlet, and a positive electrode formed by parallelly arranging a plurality of nickel-chromium metal filaments or nickel-chromium metal bands with same distance in same surface is arranged in the plasma reactor. Two ends of the positive electrode are fixed in the corresponding grooves or the projections on the conducting track for stopping micro discharging. Two sides of a negative electrode are coated with the nano TiO2. An EMC filter, a rectifying circuit, a filter circuit, a pulse generator and a pulse transformer are arranged in the pulse power source. The switching tube in the pulse transformer and the pulse generator is set by the single end reverse-excitation inverter. The optimal combination of the plasma and titanium dioxide is advanced. The purifier has the advantages of high air sterilization purification efficiency, energy-saving, well reliability, long operation life, simple structure and low cost.
Description
Technical field:
This utility model belongs to technical field of air sterilization and purification, is specifically related to the air disinfection purifier of plasma and titanium dioxide optimum organization.
Background technology:
Along with the human civilization progress, the ball ecological environment that the mankind depend on for existence but is continuous deterioration, and air pollution is on the rise: the bacterioid of legionella, staphylococcus and mycoplasma and various virus thereof; Various types of VOC VOC
SParticulate pollutant with the dust particle of aerosol existence form and radioactive particle and so on.Ben be in recent years SARS, bird flu and various influenza virus infect on a large scale the outburst happen occasionally.Especially current influenza A H1N1 has caused the whole world more than 30 ten thousand people to infect nearly 3000 people's death.The route of infection of influenza A H1N1 mainly is an air, and infectious pathogen is attached in the air usually≤and 5 μ m swim on the microgranule, flow with air and spread, and infected person is caused a disease because of sucking this air; Be droplet infection again: the mouth liquid spittle of patient's cough, sneeze, the substance in spite of illness that produced of speaking is floating in air, and is bigger with the closely infected probability of patient.
Low temperature plasma and optically catalytic TiO 2 technology are as the novel air purification techniques that occurs in recent years, and they are the efficient kill bacteria of energy all, degraded VOC VOC
S, also can suppress the air borne approach of influenza A H1N1.Especially low temperature plasma air sterilization purifier includes electrostatic field, and it is little of 0.01 μ m particulate matter to adsorb particle diameter.
Through investigation and analysis: present most producers are used for the plasma reactor discharge positive pole of air sterillization dare not the reuse tinsel, be because often work less than three, four months with regard to fracture of wire, have no way out and use zigzag and tip-like discharge positive pole instead, it is low to be forced to the plasma density accepting to produce, the fact that side effect such as the ozone that is produced, nitrogen oxide are also many is well imagined so it can only be used for the electronics electrostatic adsorption type.For example: the 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 defective of broken string has easily greatly influenced the reliability of installing." be exactly because " fracture of wire " just had no way out and made the electrostatic adsorption type air purifier of prong shape, zigzag electrode into.Reason is to select for use insulant to make the anelectrode of the direct fixing metal silk of support between the plasma reactor positive and negative electrode.Studies show that through inventor's repetition test: the insulant that dielectric constant is high is beneficial to the positive and negative electrode of isolating high potential, and deadly defect is will produce the micro discharge phenomenon in plasma reactor; Next is to increase along with the working time, the electric leakage that cause with the accumulation of atmospheric humidity, dust on its surface, climbs arc.The material that dielectric constant is high more, its surperficial micro discharge phenomenon more.In order to promote the sterilizing and purifying effect, often improve the additional power source voltage of plasma reactor, be the highfield that forms around the anelectrode, under the catalytic action of plasma, cause the local micro discharge that produces of anelectrode tinsel and insulant contact area.The high energy electron that this micro discharge phenomenon produces plays direct effect to the 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 for use fine wire to be blown easily.
Another is that high voltage power supply is for the plasma reactor matching problem that is capacitive load.Test shows: under atmospheric pressure want to make reactor to make corona discharge generation high concentration plasma and should possess two conditions to improve its sterilization and purification efficient.At first be that plus high-voltage field only applies energy to airborne electronics, heat, quicken, obtain kinetic energy, make the very little electron temperature of quality up to more than 10,000 degree, and other particle acquisition is extremely low-yield in moment (nS level).Another condition is: extra electric field applies time (uS level) of energy to electronics will be much smaller than the time that does not apply energy to electronics, and the energy that gas is obtained can in time conduct, and prevents to carry out the transition to hot plasma and lower efficiency.This just requires plasma electrical source not only to provide 10---and outside the dc high-voltage of 20KV, also high dutycycle must be arranged, it is the high-frequency narrow-pulse current of 120nS at least that the rise time reaches.Consider that simultaneously plasma reactor is a capacitive load, generally be equivalent to the capacitance of hundreds of to thousands of uuF.The positive and negative electrode long-term work is again unavoidably by accidental short circuit, and all these safeties for plasma electrical source, the harshness of stability requirement are well imagined.In view of turn-on and turn-off time of present semiconductor power switch device is the uS level, adopt conventional method for designing: for example semi-bridge inversion, multi-harmonic-oscillations, intermittent oscillation or voltage multiplying rectifier are difficult to satisfy above-mentioned two conditions.The high pressure resistant high-power switch device of nS level costs an arm and a leg, and working life is short, and design is unpractical on the product for civilian use.
Above-mentioned two key points insider are just paid close attention to the most, concentrate the focus of research; It also is the bottle neck of plasma air disinfection purifier exploitation.
Titanium dioxide (TiO
2) the light catalytic purifying technology is a kind of high-tech forward position purification techniques of rising in recent years.Photocatalyst is to utilize light source to do the photosemiconductor material that catalytic reaction promotes that Organic substance decomposes, titanium dioxide under the ultraviolet light effect, the energy excitation TiO of light source
2Gas molecule on every side produces active extremely strong free radical.The extremely strong free radical of these oxidabilities almost can decompose most organic matter and part inorganic substances, produces the hole with strong oxidability, and its energy is equivalent to the high temperature of 15000K; Free radical can also destroy the cell membrane of antibacterial, and Cytoplasm is run off, and then the oxidation nucleus, and killing bacteria.It directly kill bacteria and thoroughly decomposing organic matter be CO
2And H
2Inorganic harmless micromolecule such as O reaches sterilization, deodorization, the effect of air cleaning.Photocatalyst at present commonly used is the titanium dioxide of the extremely strong ultramicronization of oxidability, and inspection center's testing result shows: photocatalyst to the killing rate of common antibacterial more than 99%.But, present titanium dioxide (TiO
2) when the light catalytic purifying technology was used separately, photocatalyst must rely on ultraviolet irradiation ability generation effect, and ultraviolet discharge lamp damages easily, ultraviolet also has injury to human body; Particularly it is done nothing to particulate pollutant.Therefore there is the people that it is combined with the high-pressure electrostatic dust collect plant, also remedied high-pressure electrostatic control of dust kill bacteria and the bad defective of decomposing organic matter effect simultaneously.
For example application number is 200810060790.7, the applying date: 2008.4.22, denomination of invention: the independent claim of " a kind of device of long-acting purifying indoor air combined pollution " is to describe like this: a kind of device of long-acting purifying indoor air combined pollution, comprise shell, it is characterized in that: be provided with blower fan, high-pressure electrostatic discharge electrode, high voltage power supply, collecting plate, dust-collector, dc source, ultraviolet source, photocatalysis plate in the described shell, exempt from the regenerated carbon fibrous layer; The shell front lower ends is provided with air inlet, and the lower end, rear portion is provided with the gas outlet, near the gas outlet blower fan is set in the housing; Be provided with the high-pressure electrostatic discharge electrode, the parallel collecting plate that is provided with near air inlet in the housing with the high-pressure electrostatic discharge electrode; Some groups of photocatalysis plates are set behind the collecting plate, and adjacent photocatalysis plate one end is alternately fixed with the upper and lower plates of shell, and the other end leaves the space; Be provided with ultraviolet between the photocatalysis plate; Be provided with before the blower fan of housing rear portion and exempt from the regenerated carbon fibrous layer; Bottom of device is established dust-collector, dc source, high voltage power supply successively, and wherein dust-collector places in the middle of the collecting plate below, and dc power anode links to each other with the photocatalysis plate, and the high voltage power supply negative pole links to each other with the high-pressure electrostatic discharge electrode.
The advantage of this invention is photocatalysis and electrostatic precipitation complementation, but is provided with ultraviolet source, and ultraviolet discharge lamp damages easily, and ultraviolet is conspicuous to the injury of human body.The ultraviolet source power consumption is also not little, a 60m
3The indoor health ministry that meets about the public place air standards, power needs 160W at least.Besides the sterilization of electrostatic precipitation and decomposing organic matter effect are not as good as plasma air purifier.
The patent No. is 0325102.8 for another example, the technical scheme of utility model title " plate nano titanium oxide plasma discharge catalytic air disinfector " is that two flat poles are set, the centre is the air gap, wherein a surface is provided with ceramic layer, scribble titanium dioxide on the ceramic layer, it does not establish ultraviolet source.Be not difficult to find out: two flat poles belong to absorbent-type electrostatic precipitation basic structure, it can only be used for dielectric barrier discharge, can not can produce " corona discharge " as described in description, because said ceramic layer is an insulant, ultraviolet can not produce certainly yet.The nano titanium oxide of this utility model is inoperative to be conspicuous.
Summary of the invention:
The purpose of this utility model is that a kind of air disinfection and purification efficient height, energy-conservation, good reliability, long working life are provided in order to solve above-mentioned the deficiencies in the prior art; And the air disinfection purifier of plasma simple in structure and titanium dioxide optimum organization.
In order to achieve the above object, the technical solution of the utility model is:
The air disinfection purifier of plasma and titanium dioxide optimum organization comprises plasma reactor, the pulse power, fan assembly, air inlet, air outlet and shell.Air inlet is provided with just imitates air filter and middle effect air filter, and air outlet is provided with just imitates air filter, and plasma reactor and fan assembly are arranged among the air-flow.Be provided with in the described plasma reactor some nickel chromium triangle tinsels or nickel chromium triangle metal tape in same plane by the equidistant anelectrode that is arranged in parallel and makes, anelectrode places adjacent two negative electrode middle parts.The two ends of anelectrode are to be fixed on to stop on the micro discharge conductor rail in corresponding groove or the protuberance, stoping the micro discharge conductor rail is to be made by aluminium bar or stainless steel strip, the two ends of prevention micro discharge conductor rail are arranged on reactor four anelectrode metal racks all around with quadrature again and fix, and make electric connection.The upper/lower terminal of every anelectrode metal rack is established an insulation junctional complex and the corresponding installing hole of shell of reactor is fixed.The upper/lower terminal of described negative electrode is directly to be fixed on the metal shell of reactor, and makes electric connection.Described negative electrode is that the aluminium sheet of surface oxidation treatment is made, and nanoscale TiO is laid on the two sides of negative electrode
2
The described pulse power is to be arranged separately in another housing, be provided with in the pulse power EMC wave filter, rectification circuit, filter circuit, pulse generator, pulse transformer successively preface be electrically connected the external plasma reactor of the outfan of pulse transformer.Described pulse transformer output cold end is provided with current detection circuit, detected pulse transformer output current signal is sent into the pulse generator input, switching tube in the agitator that is provided with in the pulse generator, error amplifier, PWM comparator and the switching tube, pulse transformer and pulse generator is the setting of single-ended flyback inverter.
Can also be provided with the titanium dioxide catalytic plate between preferentially described plasma reactor and the fan assembly, the titanium dioxide catalytic plate is made by the surface oxidation aluminium sheet, aluminium sheet is provided with the small sircle hole that evenly gathers and makes gas channel, and aluminium sheet lays nanoscale TiO on the plane near plasma reactor
2Described nanoscale TiO
2It is the Detitanium-ore-type catalyst of band-gap energy 3.2eV.
The nickel chromium triangle wire diameter optimum of preferentially described plasma reactor anelectrode is 0.15---0.20mm, or nickel chromium triangle metal tape optimum width is 1.0---2mm, thickness are 0.08---0.10mm.
Preferentially be provided with the silent ventilator of jagged edge fan blade in the fan assembly, the sawtooth height is 4---8mm, interdental space are 5---and 10mm.
Preferentially described pulse transformer is provided with a multiple-grooved insulated coil skeleton, and secondary coil is that three sections to five sections of branches are wound in the corresponding groove of multiple-grooved insulated coil skeleton and are in series.Be provided with magnetic core in the endoporus of described primary coil and secondary coil and make electromagnetic coupled, be provided with magnetic air gap in the magnetic loop of magnetic core; Described magnetic core optimal design iron-base ultramicro-crystal iron core also can be provided with ferrite core.
Preferentially described EMC wave filter is provided with differential mode inductance device LI and common-mode inductor L2 series connection, EMC filter input end shnt capacitor C1, EMC filter output shnt capacitor C2.
Agitator, error amplifier and PWM comparator in the preferentially described pulse generator can be to make a module, also can select for use Switching Power Supply control IC 1 to comprise that UC3842, SG6848D make; Or digital control circuit and pulse generator share a monolithic integrated optical circuit, and three-terminal switch power supply IC1 comprises that TOP225 or TOP224 make, and also can be to comprise that with the better monolithic five terminal of performance Switching Power Supply IC1 MC33374 makes.
The model that is provided with optocoupler IC 2 in the preferentially described current detection circuit is PC817 or P721.
This utility model compared with prior art has following beneficial effect:
This utility model is to have complementary advantages combination among the strong ones with plasma and titanium dioxide optimum organization.
The designed plasma reactor anelectrode of the present invention is fixed on by some nickel chromium triangle tinsels or nickel chromium triangle metal tape and stops on the micro discharge conductor rail, away from the insulation junctional complex; 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.The insulation junctional complex only is that an end face contacts with stoping micro discharge conductor rail surface, so compared with prior art, its micro discharge effect is prevented from, and can not influence the plasma reactor operate as normal, and can reach more than 8 years service life.Simultaneously, make every nickel filament or metal tape make stable corona discharge in the direct current highfield, plasma density is enhanced about more than once than zigzag or tip-like discharge electrode.
Pulse generator outfan in the designed pulse power of this utility model is provided with current detection circuit, and current detection circuit cooperates with the tacit agreement of pulse generator, can adjust the output pulse width of pulse generator automatically.Pulse generator and pulse transformer are by the setting of inverse-excitation type inverter, obtain the high-frequency narrow-pulse drive current, can not occur sparking and so on fault in the plasma reactor work that is capacitive.Mandatory declaration be, pulse generator and pulse transformer are pressed the setting of inverse-excitation type inverter, and it also makes the plasma reactor and the mains isolation that are attached thereto except finishing the task of boosting, the directly safety ground of the negative electrode of reactor and shell, capability of electromagnetic shielding is better.
Obtaining beyond thought beneficial effect simultaneously is: the pulse current of inverse-excitation type inverter output is that pulse generator makes the magnetic energy abrupt release that is stored in the elementary winding of pulse transformer when turn-offing, and obtains output 18KV
P-P, operating frequency 40KH
Z, pulse width 4 μ S, the burst pulse high-voltage corona discharge electric current of rise time 70nS; Be when the plasma reactor accidental short circuit again; because the buffer action of inverse-excitation type pulse transformer; be the secondary ability conducting output of pulse generator pulse transformator when closing; thereby the semiconductor switch plumber of pulse power work is safe; holding circuit is done auxiliary using; reliability height, switching tube can be selected the common power transistor of withstand voltage 600V for use.
Ben is that the aluminium sheet of plasma reactor negative electrode surface oxidation processes is made, above aspect be to lay TiO easily
2The Al that oxidation processes generates
2O
3Aspect is thin, at 18KV
P-PDo not influence corona discharge in the burst pulse high voltage electric field.When plasma reactor was made corona discharge, the blue light that reaction zone sends contained ultraviolet, and wavelength is 300---and 400nm, light intensity peak is positioned at 357nm.And TiO
2Energy gap be 3.2eV, corresponding ultraviolet wavelength threshold value is 387.5nm.Experiment shows TiO
2When making air disinfection and purification, the catalysis optical source wavelength preferably≤387.5nm, the ultraviolet wavelength peak value that reaction zone sends is positioned at 357nm and meets this condition.So, ultraviolet source just can save, and has avoided the ultraviolet discharge lamp damage, to injury and the big drawback of ultraviolet source power consumption of human body.
Disinfection factor of the present utility model is that low temperature plasma adds and excites TiO
2The free radical that is produced.
The utlity model has the broad-spectrum sterilization effect: to staphylococcus aureus, escherichia coli, bacillus subtilis, read viruses such as strain bacterium, mycete and mycoplasma, hepatitis B, influenza in vain killing rate is efficiently all arranged.Have dedusting simultaneously, the raw meat of dehematizing, the function of removing organic exhaust gas such as abnormal flavour, degradation of formaldehyde, smog and TVOC.Through surveying: at 20m
3Killing rate behind the work 20min of the present invention that the Staphylococcus albus of artificial spray-painting in the sealing space air, rated power are 7W is more than 99.98%, and the killing rate of work 40min can be up to 100%.Degradation Formaldehyde rate 98.7%, ozone amount≤0.05mg/m is retained in suspended particles number≤350/L (Φ 〉=0.5 μ m) in the air
3
Energy-conservation is conspicuous: the present invention is at 100m
3The indoor consumed power that reaches the II of hospital class environment disinfected standard is 6---7W.Than the application number of effect same is 200810060790.7 invention, in establish high-pressure electrostatic, ultraviolet source and photocatalysis plate the air disinfection purifier energy consumption save 150W at least.
Generally speaking, this utility model has been realized plasma and titanium dioxide optimum organization, has air disinfection and purification efficient height, good reliability, long working life; And it is simple in structure, with low cost energy-conservation again.
As seen, the present invention it will be apparent to those skilled in the art that it is non-obvious for prior art, and can produce unexpected technique effect.
Description of drawings:
Fig. 1 is the structural representation of the air disinfection purifier of plasma and titanium dioxide optimum organization;
Fig. 2 is this utility model plasma reactor front view;
Fig. 3 is the work sketch map of this utility model air disinfection purifier;
Fig. 4 is a pulse power electrical schematic diagram of the present utility model;
Fig. 5 is a pulse transformer structural representation of the present utility model;
Fig. 6 is a pulse transformer circuit diagram of the present utility model;
The critical piece description of reference numerals:
1-plasma reactor 2-pulse power 3-fan assembly
5-air inlet 6-air outlet 8-shell
101-anelectrode 102-negative electrode 103-stops the micro discharge conductor rail
104-anelectrode metal rack 105-insulation junctional complex 106-insulation junctional complex gim peg
107-conductor rail ring for fixing 108-shell of reactor 201-EMC wave filter
202-rectification circuit 203-filter circuit 204-pulse generator
The elementary insulated coil skeleton of 205-pulse transformer 206-current detection circuit 211-
212-multiple-grooved insulated coil skeleton 214-primary coil 215-secondary coil
216-magnetic core 217-high pressure fast recovery diode 218-magnetic air gap
401-is just imitated and is imitated air filter 403-titanium dioxide catalytic plate among the air filter 402-
The specific embodiment:
With reference to the accompanying drawings embodiment of the present utility model is described in further detail.
Embodiment 1:
Fig. 1 is the structural representation of the air disinfection purifier of this utility model plasma and titanium dioxide optimum organization; Fig. 2 is this utility model plasma reactor front view.
As shown in Figure 1, the air disinfection purifier of plasma and titanium dioxide optimum organization comprises plasma reactor 1, the pulse power 2, fan assembly 3, air inlet 5, air outlet 6 and shell 8.Air inlet 5 is provided with just imitates air filter 401 and middle effect air filter 402, and air outlet 6 is provided with just imitates air filter 401.Plasma reactor 1 and fan assembly 3 are arranged among the air-flow, be provided with in the plasma reactor 1 some nickel chromium triangle tinsels or nickel chromium triangle metal tape in same plane by the equidistant anelectrode 101 that is arranged in parallel and makes, anelectrode 101 places adjacent two negative electrode 102 middle parts.The two ends of anelectrode 101 are to be fixed on to stop on the micro discharge conductor rail 103 in corresponding groove or the protuberance, and protuberance can be designed to metal tip nail or rustless steel flexure strip.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 upper/lower terminal of every anelectrode metal rack 104 is established an insulation junctional complex 105 and is fixed with shell of reactor 108 corresponding installing holes.The upper/lower terminal of described negative electrode 102 is directly to be fixed on the metal shell of reactor 108, and makes electric connection.The aluminium sheet that described negative electrode 102 is surface oxidation treatment is made, and nanoscale TiO is laid on the two sides of negative electrode 102
2Stoping micro discharge conductor rail 103 is to be made by aluminium bar or stainless steel strip, and the two ends of the anelectrode 101 that some nickel chromium triangle tinsels or nickel chromium triangle metal tape are made are fixed in the groove that stops correspondence position on the micro discharge conductor rail 103 or the protuberance and are located.
Designed anelectrode metal rack 104 outer rims of this utility model are provided with the prevention micro discharge conductor rail ring for fixing 107 of internal orifice dimension 4.1mm, equally spaced adjacent prevention micro discharge conductor rail 103, the length of ring for fixing is set by the requirement that reduces the mutual shielding action of same polarity electromagnetic field.This routine conductor rail ring for fixing 107 is designed to 18---25mm.
The set anelectrode 101 of this utility model is to be located in the same plane by some nickel chromium triangle tinsels or nickel chromium triangle metal tape, and makes an assembly by the equidistant arrangement of 24mm optimum, amounts to n group (n is 100 following integers); Negative electrode 102 is that metallic plate is the n+1 piece; Optimum distance between anelectrode 101 and the negative electrode 102 is 12mm.The nickel chromium triangle wire diameter optimum of anelectrode 101 is 0.15---0.20mm, or nickel chromium triangle metal tape optimum width is 1.0---2mm, thickness are 0.08---0.10mm.
Fig. 4 is a pulse power electrical schematic diagram of the present utility model.
The pulse power 2 is to be arranged separately in another housing.Be provided with in the pulse power 2 EMC wave filter 201, rectification circuit 202, filter circuit 203, pulse generator 204, pulse transformer 205 successively preface be electrically connected the external plasma reactor 1 of the outfan of pulse transformer 205.Pulse transformer 205 output cold ends are provided with current detection circuit 206, detected pulse transformer 205 output current signals are sent into pulse generator 204 inputs, the agitator that is provided with in the pulse generator 204, error amplifier, PWM comparator and switching tube.Agitator, error amplifier, PWM comparator and switching tube are arranged in the module, also can be integrated in the IC 1, the switching tube D utmost point in the IC1 connects pulse transformer 205 elementary winding a1 ends, the S utmost point connects rectification circuit 202 negative output terminals, and control utmost point C is connected with current detection circuit 206 interior set photoelectric coupled circuit IC2 outfans 4.End a1 of the same name, the a2 of the primary coil 214 of pulse transformer 205 and secondary coil 215 and different name end b1, b2 oppositely are provided with.Switching tube in pulse transformer 205 and the IC 1 is the setting of single-ended flyback inverter.
The input 1 foot ground connection of optocoupler IC2, optocoupler IC2 input 2 feet are connected with the secondary coil different name end b2 of pulse transformer 205, and optocoupler IC2 outfan 3 feet connect the negative output terminal of rectification circuit 202, and 4 feet of optocoupler IC2 are outfans.Sample resistance R2 is connected in parallel on the input of optocoupler IC2.Flowing through on the sample resistance R2 is the operating current that pulse transformer 205 is delivered to plasma reactor 1, after making electricity and isolate by optocoupler IC2 opto-electronic conversion, error amplifier and PWM comparators that the operating current sampling of plasma reactor 1 is delivered in the pulse generator 204 are handled.When plasma reactor 1 work, be damaged, wear out, the abnormality signal code during short circuit is through handling, the output pulse width of PWM comparator is zero, switching tube is closed, and realizes protecting automatically.Equally, when the operating current of plasma reactor 1 changes because of the load size, the output pulse width of PWM comparator also changes, and gauge tap pipe ON time realizes adjusting automatically pulse power output.
Be provided with after transition diode D5 and the fast recovery diode D6 differential concatenation in parallel in the pulse generator 204 described in the utility model with primary coil 214, the positive pole of transition diode D5 is connected with the positive output end of rectification circuit 202, and capacitor C6 and transition diode D5 also connect.The positive pole of fast recovery diode D6 is connected with the switching tube drain electrode.Transition diode D5 absorbs the crest voltage that oppositely surpasses threshold value that produces when pulse generator 204 turn-offs, and plays clamping action.When present embodiment is 220V when line voltage, the preferred 1.5KE250A type of transition diode D5, operating current 4.2A, limiting voltage 237---263V.Rectification circuit 202 is to be connected by bridge rectifier by diode D1, D2, D3 and D4.Filter capacitor C3 is in parallel with rectification circuit 202 dc output ends.
This utility model pulse power 2 operation principles:
Civil power is by rectification circuit 202 bridge rectifiers, and filter capacitor C3 filtering is for pulse generator 204 inversions.When the switching tube in the pulse generator 204 is encouraged by pwm pulse and during conducting, secondary high pressure fast recovery diode 217 is because of oppositely ending; Rectification circuit 202 VDs are applied to the two ends of pulse transformer 205 primary coils, this moment, primary coil 214 was equivalent to a pure inductance, flow through linear rising of electric current of primary coil 214, power supply energy is stored in the inductance of primary coil 214 with the magnetic energy form; When switching tube ends, because inductive current can not suddenly change, 214 both end voltage polarity moments of primary coil are reverse, polarity of voltage on the secondary coil 215 is put upside down and is made high pressure fast recovery diode 217 forward conductions, primary coil 214 energy stored are sent to secondary coil 215 and boost, produce the high voltage narrow pulse electric current, offer external plasma reactor 1 and make corona discharge.
Embodiment 2:
Fig. 3 is the work sketch map of this utility model air disinfection purifier.Can also be provided with titanium dioxide catalytic plate 403 between described plasma reactor 1 and the fan assembly 3, titanium dioxide catalytic plate 403 is made by the surface oxidation aluminium sheet, aluminium sheet is provided with the small sircle hole that evenly gathers and makes gas channel, and aluminium sheet lays nanoscale TiO on the plane near plasma reactor 1
2Described nanoscale TiO
2It is the Detitanium-ore-type catalyst of band-gap energy 3.2eV.The band-gap energy height of Detitanium-ore-type catalyst, its virus killing sterilization, degraded TVO
SEffective.
Embodiment 3:
Be provided with the silent ventilator of jagged edge fan blade in the fan assembly 3 described in the utility model, the sawtooth height is 4---and 8mm, interdental space are 5---and 10mm, sawtooth height and interdental space design according to rotation speed of fan.According to bionic viewpoint, the most advanced and sophisticated indentation of birds wing edge feather, wing fluctuate up and down and high velocity air friction noise is extremely low.The silent ventilator of jagged edge fan blade contrasts with the common blower fan of same power, air quantity, and the average noise index will be hanged down 3-5dB.A kind of common blower fan external diameter is 220mm, the long 60mm of airduct, voltage 220V/50Hz, operating current 0.60A, air quantity 1200m
3Noise during/h is 59.5dB (A), changes that the actual measurement noise is 54.8dB (A) behind the onesize jagged edge fan blade.
Embodiment 4:
Fig. 5 is a pulse transformer structural representation of the present utility model; Fig. 6 is a pulse transformer circuit diagram of the present invention.Pulse transformer 205 primary coils 214 among the figure are in elementary insulated coil skeleton 211, and the outfan of pulse transformer 205 is provided with high-voltage conducting wires 213 and is connected with the positive pole of plasma reactor 1.
Pulse transformer 205 is provided with a multiple-grooved insulated coil skeleton 212, and secondary coil 215 is that three sections to five sections of branches are wound in the multiple-grooved insulated coil skeleton 212 corresponding grooves and are in series, as long as volume allows, can be three, more than four even five.Establish a high pressure fast recovery diode 217 between every section coil, the positive pole of high pressure fast recovery diode 217 is connected on the end of electronegative potential line bag, and the negative pole of high pressure fast recovery diode 217 is connected on the initiating terminal of high potential line bag.High pressure fast recovery diode 217 is made high-frequency isolation with secondary coil 215 each line bag, and the distribution capacity of winding is by index decreased, helps improving the rising edge of output pulse and the speed of trailing edge; Can also reduce reverse proof voltage requirement, not only reduce cost, but also increased functional reliability, obtain beyond thought effect high pressure fast recovery diode 217.
In general, it is original about 1/9th that coil divides the winding distribution capacity of three sections coilings, and it is original about 1/25th that coil divides the winding distribution capacity of five sections coilings.The proof voltage parameter of high pressure fast recovery diode 217 is 12KV at least, and recovery time is less than 80nS.
Be provided with magnetic core 216 in the endoporus of described primary coil 214 and secondary coil 215 and make electromagnetic coupled, magnetic core 216 is iron-base ultramicro-crystal iron cores, is provided with magnetic air gap 218 in the magnetic loop of magnetic core 216.The width that is provided with of magnetic air gap 218 is 0.15---0.4mm, adjusted according to operating frequency and output.Most preferred embodiment operating frequency 38KHz, output 7W, it is 0.25mm that magnetic air gap 218 is provided with width.Described magnetic core 216 also can be that the ferrite core material of R2KD is made.Just the work magnetic flux density of magnetic ferrite magnetic core is not high, pcrmeability is on the low side, winding coil need double and abovely just can reach original inductance value, and this can make the delivery efficiency of pulse transformer 205, pulse climbing speed index superior not as the iron-base ultramicro-crystal iron core certainly.
Embodiment 5:
EMC wave filter 201 described in the utility model is provided with differential mode inductance device LI and common-mode inductor L2 series connection, EMC wave filter 201 input shnt capacitor C1, EMC wave filter 201 outfan shnt capacitor C2.Because the pulse power of the present invention is provided with EMC wave filter 201, the two ends of pulse transformer 205 primary coils are provided with the pulse amplitude limiter circuit, pulse generator 204 is by the setting of inverse-excitation type inverter with pulse transformer 205, external plasma reactor 1 and mains isolation, the direct ground connection of its shell, electromagnetic shielding, security performance are good.Test report shows: the present invention is in the 0.009---30MHz band limits, and the electromagnetic compatibility index meets domestic and international related standards regulation.
Embodiment 6:
Agitator, error amplifier, PWM comparator in the pulse generator 204 described in the utility model can be to make a module, and switching tube is external; Also can select for use Switching Power Supply control IC 1 to comprise that UC3842, SG6848D make.Agitator, error amplifier and PWM comparator and switching tube share a monolithic integrated optical circuit, can select for use three-terminal switch power supply IC1 to comprise that TOP225 or TOP224 make, also can be to comprise that with the better monolithic five terminal of performance Switching Power Supply IC1 MC33374 makes.The model that is provided with optocoupler IC 2 in the current detection circuit 206 of the present invention is PC817 or P721.
Catalytic purification principle in this utility model plasma reactor is: based on high energy electron and gas molecule collision reaction.Its catalytic purification mechanism comprises two steps: the one, and in the process that produces plasma, high-frequency discharge produces the moment high-energy, opens the chemical bond of some harmful gas molecule, makes it resolve into simple substance atom or harmless molecule.The 2nd, the free radical that comprises a large amount of high energy electrons, ion, excited state particle in the plasma and have strong oxidizing property, the average energy of these active particles is higher than the bond energy of gas molecule, frequent collision takes place in they and harmful gas molecule, open the chemical bond of gas molecule, also can produce a large amount of OH, HO simultaneously
2, free radical and the extremely strong O of oxidisability such as O
3, they and harmful gas molecule generation chemical reaction generate harmless product.The oxidizing potential of living radical OH (2.8eV) also exceeds 35% than the oxidizing potential (2.07eV) of ozone, and OH free radical and organic response speed exceed several magnitude.It is as follows that the present invention is oxidized to carbon dioxide and water or mineral Analysis on action mechanism with the harmful substance in the contaminated air:
H
2S+·OH→HS+H
2O
HS+O
2+·OH+·O→SO
3+H
2O
NH
3+·OH→NH
2+H
2O
NH
2+O
2+·O→NO
2+H
2O
Actual measurement shows, the most of nuisance mass-energy in the contaminated air between very short in oxidized decomposition, degradation rate is more than 95%.
Generally speaking, organic degraded is the plasma chemical reaction process of a complexity under the corona discharge effect of the present utility model, because the time compole that free radical exists is short, response speed is also quite fast, determine specifically that some courses of reaction are very difficult.Though the research of existing a large amount of low-temperature plasma degradation pollutant mechanism does not at present also form the theoretical system that can instruct practice, thereby further investigation low-temperature plasma degradation mechanism of pollutants is one of applied research direction.
The particulate pollutant cleaning principle is in this utility model air: utilize the plasma reactor anelectrode to make corona discharge under the driving of high-voltage pulse power source, produce low temperature plasma, a large amount of electronics that wherein comprise and negative ions are under the effect of electric-force gradient, with airborne microgranule generation inelastic collision, thereby, make it to become charged particle attached to top.Under the effect of extra electric field power, charged particle finally is deposited on the negative electrode plate to the migration of reactor negative electrode plate.Its processing procedure is divided into three phases:
1. e+M (gas molecule) → M
-
2. M
-+ PM (microgranule) → (PMM);
3. (PMM)
-→ PMM (being deposited on the dust collecting electrode).
Electrostatic precipitation is a physical process, in this process, to being suspended in diameter in the air less than the total suspended particles (TSP) of 100 μ m and diameter the sucked granule (PM less than 10 μ m
10) produce to remove effect and reach more than 95%.
This utility model is added titanium dioxide (TiO
2) photocatalysis under the ultraviolet light effect that plasma reactor sends, the energy excitation TiO of light source
2Gas molecule on every side produces active extremely strong free radical.The extremely strong free radical of these oxidabilities almost can decompose most organic matter and part inorganic substances, reaches sterilization, the effect that deodorization, air cleaning double.The air disinfection purifier of plasma of the invention that Here it is and titanium dioxide optimum organization.
This utility model scope of application is the factory toilet: the place that cleanliness factors such as food factory, electronics, optics, precision instrument, workshop bio-pharmaceuticals research department, laboratory and hospital operating room, isolation ward are had relatively high expectations; The air disinfection and purification that also can be used for public places such as office block, meeting room, cinema, train, automobile, subway, naval vessel.Cooperate air-conditioner, the scope of application is wider.
More than disclose the true and best mode of the present invention of inventor's design and test, but practice of the present utility model is not limited thereto.Obviously, those skilled in the art can carry out various interpolations, modification or replacement to feature of the present utility model and not depart from the spiritual scope of basic inventive concept.Description has been done to further specify to this utility model with reference to the embodiment of accompanying drawing, is not to qualification of the present utility model.In technical concept scope of the present utility model, those skilled in the art can lay TiO by the designed negative electrode plate of the utility model of above-mentioned announcement
2, the prevention micro discharge technology in the plasma reactor and pulse power content thereof make the variety of way simple deformation that comprises material or be equal to alternatively, all belong in the scope of technical solutions of the utility model.Self-evident, all belong in the technical concept scope of the present utility model, can't depart from spirit of the present utility model or surmount the scope of claims definition.
Claims (8)
1. the air disinfection purifier of plasma and titanium dioxide optimum organization, comprise plasma reactor (1), the pulse power (2), fan assembly (3), air inlet (5), air outlet (6) and shell (8), air inlet (5) is provided with just imitates air filter (401) and middle effect air filter (402), air outlet (6) is provided with just imitates air filter (401), plasma reactor (1) and fan assembly (3) are arranged among the air-flow, it is characterized in that being provided with in the described plasma reactor (1) some nickel chromium triangle tinsels or nickel chromium triangle metal tape in same plane by the equidistant anelectrode (101) that is arranged in parallel and makes, anelectrode (101) places adjacent two negative electrodes (102) middle part; The two ends of anelectrode (101) are to be fixed on to stop micro discharge conductor rail (103) to be gone up in corresponding groove or the protuberance, stoping micro discharge conductor rail (103) is to be made by aluminium bar or stainless steel strip, 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 upper/lower terminal of every anelectrode metal rack (104) is established an insulation junctional complex (105) and is fixed with the corresponding installing hole of shell of reactor (108); The upper/lower terminal of described negative electrode (102) is directly to be fixed on the metal shell of reactor (108), and makes electric connection; Described negative electrode (102) is that the aluminium sheet of surface oxidation treatment is made, and nanoscale TiO is laid on the two sides of negative electrode (102)
2
The described pulse power (2) is to be arranged separately in another housing, be provided with in the pulse power (2) EMC wave filter (201), rectification circuit (202), filter circuit (203), pulse generator (204), pulse transformer (205) successively preface be electrically connected the external plasma reactor of outfan (1) of pulse transformer (205); Described pulse transformer (205) output cold end is provided with current detection circuit (206), detected pulse transformer (205) output current signal is sent into pulse generator (204) input, the agitator that is provided with in the pulse generator (204), error amplifier, PWM comparator and switching tube, the switching tube in pulse transformer (205) and the pulse generator (204) are the settings of single-ended flyback inverter.
2. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, it is characterized in that to be provided with titanium dioxide catalytic plate (403) between described plasma reactor (1) and the fan assembly (3), titanium dioxide catalytic plate (403) is made by the surface oxidation aluminium sheet, aluminium sheet is provided with the small sircle hole that evenly gathers and makes gas channel, and aluminium sheet lays nanoscale TiO on the plane near plasma reactor (1)
2Described nanoscale TiO
2It is the Detitanium-ore-type catalyst of band-gap energy 3.2eV.
3. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, the nickel chromium triangle wire diameter that it is characterized in that described anelectrode (101) is 0.15---0.20mm, or nickel chromium triangle metal tape width is 1.0---2mm, thickness are 0.08---0.10mm.
4. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization is characterized in that being provided with in the fan assembly (3) silent ventilator of jagged edge fan blade, the sawtooth height is 4---8mm, interdental space are 5---10mm.
5. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, it is characterized in that described pulse transformer (205) is provided with a multiple-grooved insulated coil skeleton (212), secondary coil (215) is that three sections to five sections of branches are wound in the corresponding groove of multiple-grooved insulated coil skeleton (212) and are in series; Be provided with magnetic core (216) in the endoporus of described primary coil (214) and secondary coil (215) and make electromagnetic coupled, be provided with magnetic air gap (218) in the magnetic loop of magnetic core (216); Described magnetic core (216) design iron-base ultramicro-crystal iron core.
6. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, it is characterized in that described EMC wave filter (201) is provided with differential mode inductance device LI and common-mode inductor L2 series connection, EMC wave filter (201) input shnt capacitor C1, EMC wave filter (201) outfan shnt capacitor C2.
7. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, it is characterized in that agitator, error amplifier and PWM comparator in the described pulse generator (204) are to make a module, select for use Switching Power Supply control IC 1 to comprise that UC3842, SG6848D make; Or digital control circuit (204) and pulse generator (205) share a monolithic integrated optical circuit, and three-terminal switch power supply IC1 comprises that TOP225 or TOP224 make, and is to comprise that with monolithic five terminal Switching Power Supply IC1 MC33374 makes.
8. the air disinfection purifier of plasma according to claim 1 and titanium dioxide optimum organization, the model that it is characterized in that being provided with in the described current detection circuit (206) optocoupler IC 2 is PC817 or P721.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202156875U CN201643058U (en) | 2009-12-31 | 2009-12-31 | Air sterilization purifier of optimal combination of plasma and titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202156875U CN201643058U (en) | 2009-12-31 | 2009-12-31 | Air sterilization purifier of optimal combination of plasma and titanium dioxide |
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| Publication Number | Publication Date |
|---|---|
| CN201643058U true CN201643058U (en) | 2010-11-24 |
Family
ID=43108249
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202156875U Expired - Lifetime CN201643058U (en) | 2009-12-31 | 2009-12-31 | Air sterilization purifier of optimal combination of plasma and titanium dioxide |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079509A1 (en) * | 2009-12-31 | 2011-07-07 | 上海天晕环保科技有限公司 | Plasma sterilizing-purifying machine and method for air sterilizing and purifying |
| CN101920039B (en) * | 2009-12-31 | 2013-04-17 | 周云正 | Air disinfection purifier by optimized combination of plasma and titanium dioxide |
| CN104127907A (en) * | 2014-08-06 | 2014-11-05 | 上海侃亿诺纺织品有限公司 | Non-thermal plasma air-purifying and disinfecting reactor |
| CN106237767A (en) * | 2016-08-29 | 2016-12-21 | 四川环翔科技有限责任公司 | One rotates the ash-clearing structure that gathers dust |
| CN106268132A (en) * | 2016-08-29 | 2017-01-04 | 四川环翔科技有限责任公司 | A kind of efficiently PM2.5 adsorbent equipment |
| CN110898571A (en) * | 2019-10-30 | 2020-03-24 | 陈晖� | High-efficient air return machine that purifies of isolated low coverage subregion |
| CN111536615A (en) * | 2020-04-30 | 2020-08-14 | 清华大学 | Novel electromagnetic sterilization device for air sterilization of buildings |
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| CN112944554A (en) * | 2021-02-19 | 2021-06-11 | 西安交通大学 | Air sterilizer based on low-temperature plasma concerted catalysis technology |
| ES2871201A1 (en) * | 2020-04-27 | 2021-10-28 | Advances & Devices Healthtech S L | AIR TREATMENT DEVICE AND PROCEDURE (Machine-translation by Google Translate, not legally binding) |
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| WO2011079509A1 (en) * | 2009-12-31 | 2011-07-07 | 上海天晕环保科技有限公司 | Plasma sterilizing-purifying machine and method for air sterilizing and purifying |
| CN101920039B (en) * | 2009-12-31 | 2013-04-17 | 周云正 | Air disinfection purifier by optimized combination of plasma and titanium dioxide |
| US8529830B2 (en) | 2009-12-31 | 2013-09-10 | Shanghai Tianyun Environmental Protection Technology Co., Ltd. | Plasma sterilizing-purifying device and method for air sterilizing and purifying |
| CN104127907A (en) * | 2014-08-06 | 2014-11-05 | 上海侃亿诺纺织品有限公司 | Non-thermal plasma air-purifying and disinfecting reactor |
| CN106237767B (en) * | 2016-08-29 | 2018-09-07 | 四川环翔科技有限责任公司 | It is a kind of to rotate the ash-clearing structure that gathers dust |
| CN106268132A (en) * | 2016-08-29 | 2017-01-04 | 四川环翔科技有限责任公司 | A kind of efficiently PM2.5 adsorbent equipment |
| CN106237767A (en) * | 2016-08-29 | 2016-12-21 | 四川环翔科技有限责任公司 | One rotates the ash-clearing structure that gathers dust |
| CN110898571A (en) * | 2019-10-30 | 2020-03-24 | 陈晖� | High-efficient air return machine that purifies of isolated low coverage subregion |
| ES2871201A1 (en) * | 2020-04-27 | 2021-10-28 | Advances & Devices Healthtech S L | AIR TREATMENT DEVICE AND PROCEDURE (Machine-translation by Google Translate, not legally binding) |
| CN111536615A (en) * | 2020-04-30 | 2020-08-14 | 清华大学 | Novel electromagnetic sterilization device for air sterilization of buildings |
| EP4005667A1 (en) * | 2020-11-27 | 2022-06-01 | Plasma Innova S.A. | Non-thermal plasma air purifier |
| CN112728718A (en) * | 2020-12-28 | 2021-04-30 | 杭州永青环保技术有限公司 | Plasma fire-fighting smoke-removing equipment and smoke-removing and person-saving method thereof |
| CN112944554A (en) * | 2021-02-19 | 2021-06-11 | 西安交通大学 | Air sterilizer based on low-temperature plasma concerted catalysis technology |
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