CN105983486A - High-voltage ion and electret air purification apparatus and air purifying apparatus - Google Patents
High-voltage ion and electret air purification apparatus and air purifying apparatus Download PDFInfo
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- CN105983486A CN105983486A CN201510044044.9A CN201510044044A CN105983486A CN 105983486 A CN105983486 A CN 105983486A CN 201510044044 A CN201510044044 A CN 201510044044A CN 105983486 A CN105983486 A CN 105983486A
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Abstract
The invention discloses an apparatus integrates high-effective ionization driving and electret filtration. When air from an air inlet passes through at least one corona generating electrode, gas particles in air are ionized, and the ionized gas particles are absorbed by a collection electrode of which the potential is opposite to the corona generating electrode and are adsorbed on the collection electrode. When a part of electrified ionized particles pass across the collection electrode, the ionized gas particles, which are electrified and are escaped from the collection electrode, enter into a filtering membrane in the electrets to charge the electret. Electret dipoles, which are disorderly arranged in the electrets of which the electric quantity is neutralized, acquire energy again and are arranged orderly, so that a stronger and more effective adsorption capability to dust particles is achieved compared with a common passive electrets. Through the optimized ion flow electrode structure, electric pump energy which is higher than that of a common electrode is provided, so that the air purifying apparatus is improved in sterilization capability, can remove toxic gas, and can adsorb dust and the like particles, and is low in wind resistance, is energy-saving and is high in sterilization and adsorption efficiency in the field of air purification.
Description
Technical field
The present invention relates to air cleaner, particularly relate to a kind of air cleaning high-pressure ion electret
Body purifier and air cleaner.
Background technology
Prior art as shown in Figure 1 (such as U.S. Patent No. No. 4689056 and No. 5055118),
Describing electrostatic air cleaner equipment uses the ion of corona discharge generation and air acceleration right
Grit charging electric charge and being collected.The corona discharge on ion limit, pole is there is in equipment utilization at corona
Principle.This corona discharge is by high intensity produced by the high pressure between pole and collector is occurring
Electric field causes.Ion mutually collides with surrounding air molecule, and the kinetic energy of ion is transmitted to air,
Cause consistent the moving thus the air mass motion on direction needed for formation of air.
Above-mentioned ionic air purifier enables to air movement, sterilization, collect dust with
And elimination harmful gas, but dust collecting effect, dispel the effect of TVOC by voltage and ozone
Limit, owing to electric field intensity is the highest, easily cause sparking, produce substantial amounts of ozone simultaneously；Electricity
The lowest then dust catching efficiency of field intensity is poor.These factors restrict single static purification and want at height
Ask the application in environment.
Limited with ozone by voltage in view of existing single static purification, produced after a while
A kind of compound cleaning equipment being referred to as electricity bag unification, is shown in Fig. 2.This comprehensive clean
Gasifying device overcomes the shortcoming that general electrostatic filter purification efficiency is low, but brings new
Problem, if filter mesh is too big, clean-up effect is poor；If filter mesh is the least, windage
Too big, and then make observable index degradation.
Summary of the invention
For the deficiencies in the prior art, present invention solves the technical problem that to be to provide a kind of air clean
Change high-pressure ion electric field plus the purifier of electrostatic electret filter material, with solve above-mentioned from
The problem that sub-purifier clean-up effect is limited and Energy Efficiency Ratio declines to a great extent.
For reaching above-mentioned purpose, the technical scheme is that
A kind of air cleaning high-pressure ion electret purifier, described air cleaning high-pressure ion
Electret purifier includes at least one clean unit i.e. ion electrode group, described ion electrode
Group includes and sets gradually with lower component according to the direction of air flowing:
At least one corona generation electrode, at least one corona generation electrode described is with described
The collector institute rightabout electromotive force of band electromotive force；
At least two collector, described collector with corona electrode opposite potential；
At least one electret being made up of electret filter film；
When the air of air inlet occurs pole corona electrode by least one ionization, in air
Gas particles is ionized, and the granule after ionization is inhaled by with corona electrode opposite potential collector
Draw and adsorb on collector, after the granule of partial ionization crosses collector, this part band
The ion stream gas particles of electricity effusion collector enters electret filter film and charges to electret, makes
After being neutralized electricity, the dipole of malalignment, regains energy and marshalling, thus to ash
Dirt granule presents the most powerful effective absorbability than ordinary passive electret.
Further, described often group ion electrode group includes the thread electricity of a series of multiple electrical connection
Dizzy electrode, each corona electrode is parallel to each other, and the ionization limit of all of corona electrode is distributed in
In approximately the same plane, the distance between neighboring corona electrodes is D1；
The electrode interacted with corona electrode is two or more passive electrode, and each is collected
Be parallel to each other between electrode, each passive electrode include plate part and each passive electrode towards
Corona electrode direction is circular arc the ionization limit with the most independent arc, described collection electricity
Polar system row are respectively in the left and right sides in corona electrode downstream, series of collection electrode each self-ionization limit institute
The plane that the plane formed is formed with corona electrode silk series ionization limit is parallel, adjacent collector electricity
Distance between pole is D2；Described D1 distance >=D2 or≤2*D2-1；
The plate part of described passive electrode is formed with thread corona electrode series ionization limit
Plane is mutually perpendicular to, plane determined by corona electrode series ionize limit with passive electrode series
Determined by plan range be that D3, D3 are not more than 3*D2；Described passive electrode has the most vertical
Straight length and height dimension, to adjust horizontal air-flow direction；
What the plane that described electret is formed and passive electrode series end face were formed plane
It is parallel to each other, is separated by certain space length；Cross the ion stream of described passive electrode to become and stay
The charging electric pump of polar body dipole.
Further, described corona occurs pole to be made by the fine rule conducted electricity, preferably tungsten filament, silver-plated
Silk, gold-plated silk, molybdenum filament, filamentary silver or spun gold, or wherein two or more braiding or be mutually wound around
Forming, diameter range is
Further, described passive electrode group is made up of at least two passive electrodes, each collection
Electrode includes that the leading edge of flake main body and flake main body is cylindric towards corona electrode direction, for
One circular cylinder is protruding, and top view is shown as the pattern of a near circular；Preferably,
The cylindrical cross-sectional diameter of described passive electrode is 3-8mm, the lamellar master being connected with cylinder
The thickness of body is 0.5-1mm, it is preferred that described passive electrode is prepared by conductive material, as aluminum,
Copper, rustless steel, graphite, conductive plastics or their composite.
Further, described collector is made up of at least one collector assembly, different collectors
Assembly has different resistance coefficients；Preferably, the collector assembly of described collector is according to electricity
Resistance coefficient is arranged from high to low, and consistent or reverse with the direction of air flowing；Preferably, institute
There is described collector equipotential link；Preferably, on described collector there is pole one in distance corona
The farthest collector assembly in side is provided with the contact being connected with power output end.
Further, connected by slot or jack between the assembly of described adjacent collector pole；Preferably
, it is not in contact with each other mutually between the assembly of described adjacent collector pole.
Further, described corona electrode connects positive source or ground connection, and described passive electrode connects
Ground or connection power cathode；Preferably, described corona electrode and/or passive electrode are non-combustible
And conduction metal material make.
Further, described electret is to have Electrostatic Absorption performance after carrying out polarization process
High molecular polymer filtering material, its polarization intensity be much smaller than electret filter material entirety institute
Produced saturation intensity when having dipole all to arrange consistent, utilizes the ion crossing passive electrode
Stream charges to described electret, thus plays the effect of an electret electric pump.The present invention is adopted
Electret be a kind of novel high molecular polymer filter material with Electrostatic Absorption performance
Material, before coming into operation, these electret filter materials use corona method etc. to carry out at polarization
Reason, the polarization intensity of the electret through so processing is whole much smaller than electret filter material
Produced saturation intensity when body all dipoles all arrange consistent.At these electret filter materials
Material about can obtain 10-2μC/m2Polarization intensity.When these electret filter materials are relaxation
Between longer be in the electrolyte that metastable state has polarized.When removing extra electric field, its polarization is strong
Degree can be gradually reduced, and its surface charge the most exponentially or gradually declines close to exponential law
Subtract.
The present invention this characteristic for electret just carries out energy supplement to electret, utilizes
The ion stream crossing passive electrode charges to electret filter material, thus plays an electret
The effect of filtering material electric pump.
According to the computing formula of electrostatic field electromotive force, φ A=Ep/q.It is understood that certain point in the electric field
The difference of reference point O electromotive force, is the electromotive force of this point relatively." in electric field, the electromotive force of certain point is at numerical value
The upper unit positive charge that is equal to is at that electric potential energy being had ".
Formula: ε=q φ (wherein ε is electric potential energy, and q is the quantity of electric charge, and φ is electromotive force), i.e. φ
=ε/q
Potential energy in electrostatic field.One point charge is certain 2 point (such as A point and B point) in electrostatic field
Electric potential energy difference equal to it when A point moves to another B point, electrostatic force institute work.Therefore
WAB=qEd (E is the electric field intensity of this point, and d is the distance along electric field line),
Electric potential energy can be tried to achieve by electric field force acting, because W AB=qUAB=q (Ф A-Ф B)=q
Ф A-q Ф B=EA (just)-Eb (last)=-Δ E,
(Ф is electromotive force, and q is the quantity of electric charge, and U is electric potential difference, and EA (just), EB (last) are two
The electric potential energy of point).
According to elaboration to electrostatic field electromotive force formula above, it is clear that ground is seen, passive electrode
And the physical distance between electret filter material is equivalent to A point (passive electrode) in electrostatic field
With B point (electret filter material), in the case of A point electric potential energy φ locks, distance d is more
Greatly, quantity of electric charge q is the least.
Further, the polarization intensity of electret is directly proportional by it to the intensity of ion electric field, and
When ion-conductance field intensity one timing, the polarized electric field intensity suffered by these electret filter materials
It is inversely proportional to the physical distance of electret filter material plane with passive electrode sheet ionization limit plane.
Further, the present invention is according to the polarity effect of different electrets, electret
Mesh is different, and different ion-conductance field intensities, by adjusting electret filter material and receipts
The distance of current collection pole piece ionization limit plane, it is thus achieved that optimal sterilization, taste removal and dust adsorption effect
Really.
Preferably, described electret is Polymer electrets material or high-insulativity fluoropolymer material
Material preparation, such as politef (PTFE), FEP fluorinated ethylene propylene copolymer (FEP), gathers partially
Fluorothene (PVDF) etc. or their composite.
Present invention also offers a kind of air cleaner, described air cleaner includes above-mentioned
Air cleaning high-pressure ion electret purification electrode assembly, and be used for supplying above-mentioned corona
There is electrode and collector current potential and produce the electricity of the electric field causing corona discharge between
Source.
The invention have the advantage that due in atmospheric dust charged particles neutralization or due to dust
The calm shielding action producing electrostatic force, can cause the polarization phenomena of electret weaken or disappear,
Make it lose the adsorption to dust granules, formed to make electret regain energy
Strong electret, needs to make its neat polarization arrangement that dust granule is presented ratio commonly
The most powerful effective absorbability of passive electret.The invention enables when the air of air inlet passes through
When at least one ionization occurs pole corona electrode, the gas particles in air is ionized, after ionization
Granule by with the attraction of corona electrode opposite potential collector and adsorb on collector, when
After the granule of partial ionization crosses collector, the ion gas of this part charged effusion collector
Body granule enters electret filter film and charges to electret, makes to be neutralized malalignment after electricity
Dipole, regains energy and marshalling, thus presents dust granule and compare ordinary passive
The most powerful effective absorbability of electret, the invention by electrode ionization air
Gas particles is as a kind of electric pump charged to electret.The present invention is by ion electrode structure
Electric pump effect, further increases the adsorption to granules such as dusts, and to pathogenic bacteria again
The secondary function killed, compensate for ion electrode dust collecting effect and is not so good as the defect of HEPA drainage screen,
Make use of again electret to filter eyelet without the least so that electret because of the effect of electrostatic field simultaneously
Body filtering material windage only has about 1/3rd of equal filter effect HEPA high efficiency particulate air.
The present invention provides one to air purification field, and low windage is energy-conservation, high adsorption efficiency,
The air filter of sterilization.
Accompanying drawing explanation
Fig. 1 is the electrostatic depuration electrode assembly schematic diagram of prior art；
Fig. 2 is the electric bag unification purifier schematic diagram that prior art is compound；
Fig. 3 is air cleaning high-pressure ion electret operation principle schematic diagram；
Fig. 4 is the schematic diagram of the electrode of corona generation electrode and collector composition；
Fig. 5 is the schematic diagram of a kind of air purifier.
In figure: corona generation electrode 2, collector 3, electret 4, ionization limit 302, flat board
Part 301, high voltage power supply 100, a set of electrode 200 of high-pressure ion electric field that produces are (by one
Series of power electrode 2 and a series of collector 3 form), electret filter 400 is (by electret
Body 4 forms), without photocatalyst 500, total-heat exchanger 600 and low-noise fan 700,
Primary efficient filter screen 800, corona ion plasma 203, electron collision produce ionization 204, one pole drift
Move district 205, photo-ionisation 206, effusion ion stream (electric pump source) 207, ionization border 208,
4-2, polarized electric field 4-3 after before electret polarization, 4-1, electret polarize.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
The present invention provides a kind of air cleaning high-pressure ion electret purifier, is used for preparing sky
Gas purifier, as shown in Figure 3 and Figure 4, described air cleaning high-pressure ion electret purifies dress
Put include at least one clean unit i.e. ion electrode group, described ion electrode group include and according to
The direction of air flowing sets gradually with lower component:
At least one corona generation electrode 2, at least one corona generation electrode described with institute
State the collector institute rightabout electromotive force of band electromotive force；
At least two collector 3, described collector with corona electrode opposite potential；
The electret 4 that at least one is made up of electret filter film；
When the air of air inlet occurs pole corona electrode 2 by least one ionization, in air
Gas particles be ionized, the granule after ionization by and corona electrode opposite potential collector 3
Attraction and adsorb on collector 3, after the granule of partial ionization crosses collector 3,
The ion stream gas particles of this part charged effusion collector 3 enters electret 4 filter membrane to staying
Polar body 4 charges, and after making to be neutralized electricity, the dipole of malalignment regains energy and arranges
Neatly, thus to dust granule effective absorption more powerful than ordinary passive electret 4 is presented
Ability.Owing to it has higher absorption affinity than passive electret, so to electret
Require lower, decrease power source special and control circuit than common active electret simultaneously, utilize
The ion that corona generation electrode ionizing air produces comes for electret pump electric, makes whole system have
Beyond thought effect.
Except selecting traditional various electrode styles, in actual applications, corona generation electrode 2
Can use wire electrode, specifically, described often group ion electrode includes a series of multiple electricity
The thread corona electrode connected, each corona electrode is parallel to each other, all of corona electrode
Ionization limit is distributed in approximately the same plane, and the distance between neighboring corona electrodes is D1.
Meanwhile, the electrode interacted with corona electrode is two or more passive electrodes 3, often
It is parallel to each other between one passive electrode 3, except selecting traditional passive electrode style, it is possible to
To use following structure: each passive electrode 3 includes plate part 301 (also referred to as lamellar master
Body) and each passive electrode be circular arc towards corona electrode 2 direction and have the most independent
The ionization limit 302 of arc, described passive electrode 3 series is respectively in the left and right in corona electrode downstream
Both sides, the plane that series of collection electrode 3 each self-ionization limit 302 is formed and corona electrode silk system
The plane that row ionization limit is formed is parallel, and the distance between neighboring collecting electrode 3 is D2；Described
D1 distance >=D2 or≤2*D2-1；The plate part 301 (flake main body) of described passive electrode 3
The plane formed with thread corona electrode 2 series ionization limit is mutually perpendicular to, by corona electrode 2
Plane determined by series ionizes plan range determined by limit 302 with passive electrode 3 series
D3, D3 are not more than 3*D2；Described passive electrode 3 has orthogonal length and height gauge
Very little, to adjust horizontal air-flow direction；Plane that described electret 4 is formed and collection
What the end face of the other end of electrode 3 series plate part 301 was formed plane is parallel to each other,
It is separated by certain space length；The ion stream crossing described passive electrode 3 becomes electret 4 occasionally
The extremely charging electric pump of son.
In actual applications, described corona occur pole 2 made by the fine rule conducted electricity, preferably tungsten filament,
Silver-plated silk, gold-plated silk, molybdenum filament, filamentary silver or spun gold, or wherein two or more braiding or mutual
Being entwined, diameter range isBetween (containing) any value.Such as
0.03mm, 0.05mm and 0.1mm etc..Burst size according to ozone is amassed by discharging surface, and
With the relation of discharge current=i2, prepare the thinnest ozone of diameter of the conductive filament of corona generation pole 2
Burst size is the fewest, it is contemplated that mechanical strength and electrical effect, can selectFig. 4
Totally 2, the corona generation electrode of middle citing, passive electrode 3 has three, adjacent collector
Being separated from each other between 3, each passive electrode 3 is parallel to each other, the flat board of passive electrode 3
Distance between part 301 is D2.In Fig. 4, one group of corona electrode silk 2 combination of display produces
The arc ionization limit 302 produced plan range of series of plane and passive electrode 3 be D3,
The distance of D3 is according to electric field intensity, sparking, ozone generation, insulant creep age distance, ginseng
Formulate according to comprehensive factors mutually restricted such as UL867 standards.One air cleaning high-pressure ion
Electret purifier, should provide the highest air filtration usefulness, should not produce many simultaneously
Remaining ozone, the regulation that UL867 standard is 37, ozone value not should be greater than 50ppb/m3.Abide by
Follow above-mentioned relevant standard, show according to the experiment of the ion-conductance field ionization source using 12,000 volt
D3 distance is between 3*D2-4*D2；This passive electrode has orthogonal length and height gauge
Very little, to adjust and to guide the direction of air flowing, it is contemplated that the effect of ion stream eddy current and from
The density of sub-electric field, uses 2*D2 in D1D2 and D12*D2, Fig. 4.
According to actual needs with promote adsorption particle thing needs, in certain embodiments, described
Passive electrode group is formed (being 3 in Fig. 4), each collection by least two passive electrodes 3
Electrode 3 includes that the leading edge of flake main body (i.e. plate part 301) and flake main body is towards corona
Electrode direction is cylindric, and (its cylinder just constitutes arc-shaped to be a circular cylinder projection
Ionization limit 302), top view is shown as the pattern of a near circular；In actual applications,
The cylindrical cross-sectional diameter of described passive electrode may select and (contains) any value between 3-8mm,
Purpose is to improve the threshold that punctures of corona discharge, makes this ion electric pump can be at higher electric-field strength
The work of the lower safety of degree, the most also provides for the energy that the supply of next stage ion electric pump is more sufficient and protects
Barrier.The thickness of the flake main body being connected with cylinder may be selected to be (to contain) between 0.5-1mm appoints
One numerical value, in terms of material selection, described passive electrode 3 is prepared for conductive material, as aluminum,
Copper, rustless steel, graphite, conductive plastics or their composite.
In other embodiment, described collector 3 is made up of at least one collector assembly,
Different collector assemblies have different resistance coefficients；Wherein, the scheme of optimization is, described receipts
The collector assembly of collector is arranged from high to low according to resistance coefficient, and the direction flowed with air
Consistent or reverse.The purpose of this arrangement is that the distribution according to space electric field is to charged ion dust
Intercepting of granule is relevant, it is understood that the intensity of ion stream is consistent with the intensity of space electric field
, the change of resistivity makes ion stream i also change, and the assembly that resistivity is high is electric in space
The pressure drop that place obtains is the highest, and interdiction capability is the strongest, otherwise the most weak.
As required, all described collector equipotential link can be selected；Preferably, described
The collector assembly that on collector, distance corona occurs side, pole farthest is provided with and power supply
The contact that outfan is connected.In equipotential link, because asking without the concern for voltage difference
Topic, it is the most rational installation method that a farthest collector assembly connects power output end,
For the ease of installing, dismantling and keep in repair, can select between the assembly of described adjacent collector pole
Connected by slot or jack.
In order to improve adsorption efficiency, it is not in contact with each other mutually between the assembly of described adjacent collector pole.
In actual applications, described corona electrode connects positive source or ground connection, described collection electricity
Pole ground connection or connection power cathode；Preferably, described corona electrode and/or passive electrode are not
Flammable and conduction metal material is made.
It practice, described high-pressure ion purged electrode structure is that electret filter material provides one
Plant electric pump.The polarization intensity of electret is directly proportional by it to the intensity of ion electric field；Preferably,
Polarized electric field intensity suffered by described electret filter material and electret filter material plane
It is inversely proportional to the physical distance of passive electrode plate plane；Preferably, described electret is high polymer
Prepared by electret or high-insulativity fluoropolymer material, as politef (PTFE),
FEP fluorinated ethylene propylene copolymer (FEP), Kynoar (PVDF) etc. or their composite.
From foregoing invention content part it is known that the polarized state of electret filter material
After being determined by preparation method during initialization, its polarization intensity and ion in the dynamic duty filtered
Electric field intensity is directly proportional, that is described electret electrostatic field voltage and described adjacent collection pole piece
Between physical distance D0 be directly proportional in certain scope, with described electret filter film with
Collector physical distance is inversely proportional to.When electret filter material is purifying in work due to air ash
In dirt charged particles neutralization or due to dust calmness produce electrostatic force shielding action lead
When cause polarization phenomena weaken or disappear, the high-pressure ion electrode assemblie that this programme is recommended is formed
Part is crossed the ion stream of passive electrode and will be charged electret filter material, outside being equal to
The polarization of electret filter material is processed by added electric field, makes polarity effect be in the electret being attenuated
Body filtering material forms the dipole subgroup of strong proper alignment because regaining energy, its
Neat polarization arrangement dust granule is presented than ordinary passive electret the most powerful effectively
Absorbability.As it is shown on figure 3, gas particles and dust granule in air occur through corona
After the corona ion plasma 203 that pole 2 generates (ionization border is 208), electron collision produces electricity
From generating charged particle 204, enter after photo-ionisation 206 and one pole drift region 205 and collect
The scope of pole 3, major part dust particle is adsorbed to be filtered, the charged gas particles of part and dust
Granule passes collector 3, and these charged particles are exactly the ion stream (electric pump source) 207 of effusion
Charging electret 4, under the effect of polarized electric field 4-3, electret is before electret polarizes
After what 4-1 showed arranges the electret polarization that mixed and disorderly dipole becomes dipole marshalling
4-2, thus substantially increase the adsorption effect of electret, the dust granule that will escape out caught
Filter, improves air purification effect further.
Therefore the scheme that the present invention the recommends electric pump effect by high-pressure ion electrode assemblie, enters one
Step improves the adsorption to granules such as dusts, and the function again killed to pathogenic bacteria,
Compensate for ion electrode dust collecting effect and be not so good as the defect of HEPA drainage screen, make use of again simultaneously and stay
Polar body filters eyelet without the least so that electret filter material windage because of the effect of electrostatic field
About 1/3rd of only equal filter effect HEPA high efficiency particulate air.
Present invention also offers a kind of air cleaner, described air cleaner includes above-mentioned
Air cleaning high-pressure ion electret purify with electrode assembly high-pressure ion electret purify use
Electrode assembly, and be used for supplying above-mentioned corona generation electrode and collector current potential and at both
Between produce the power supply of electric field causing corona discharge.
As it is shown in figure 5, our this air cleaner is called air cleaning high-pressure ion electret
Body VMC (Ventilation Mechanical Control System).The new blower fan of high-pressure ion electret of present case includes: primary efficient filter screen 800
(optional), high voltage power supply 100, a set of electrode 200 of high-pressure ion electric field that produces are (by one
Series of power electrode 2 and a series of collector 3 form), electret filter 400 is (by electret
Body 4 forms), without photocatalyst 500 (optional), total-heat exchanger 600 (optional) and low
Noise blower fan 700 (optional).The wherein said electrode assemblie of high-pressure ion electric field that produces is by one
Series of power electrode 2 and a series of collector 3 form, as shown in Figure 4, and described corona electricity
Pole 2 and be arranged on described 2 times air ports of corona electrode collector 3, this group electrode pass through
It is electrically connected to high voltage power supply 100, and between described corona electrode 2 and described collector 3
Form the high pressure of more than ten thousand volts.
The garden arc that one end is a diameter Ф 5mm of pole 2 is there is in described collector 3 towards corona
Shape ionization limit 302, it is therefore an objective to improve the threshold that corona discharge punctures, make this ion electric pump energy
The work of safety under higher electric field intensity, also more fills for next stage ion electric pump supply simultaneously
The energy of foot provides safeguard.
Most dust and pathogenic bacteria should be killed in this treatment facilities and adsorb, but root
According to different environment and wind speed, still some ion charged particles, a part of dust, cross
Collector escapes into next filtering bodies, but can be by electret 4 adsorption filtration.
Electret filter material is a kind of to be polarized by corona method or other means in advance, but
We can be clearly seen that from foregoing invention content, and electret filter material is a kind of sub-
The electrolyte of steady-state polarization.When removing extra electric field, its polarization intensity can be gradually reduced,
Its surface charge the most exponentially or gradually decays close to exponential law.So the present invention pushes away
The ion stream of what the scheme recommended was exactly based in Fig. 3 the cross passive electrode electret 4 to decay
It is charged processing, makes the proper alignment again of the dipole in electret filter material, thus more
Mend the decay of polarization intensity.
According to the Gauss theorem of electrostatic field, the field intensity of electret and surface potential it is
[-E+Es ε r=...]
Loop theorem according to electrostatic field:
Solve:
Above formula E represents the field intensity in air gap. due to two electric pole short circuits, the electricity between electret two surface
Potential difference should be the table of electret equal to the potential difference at air gap two ends between electret surface and electrode
Face current potential, its absolute value is represented by
In reality is measured, there is L ＜ ＜ d, then with the surface potential represented under this condition,
Have
Showing according to field intensity prediction equation, electret surface potential is only determined by its Equivalent Surface electricity
Lotus surface density and self permeability-thickness.
We pass through the special surface potential meter surface potential measurement to electret in an experiment,
Coordinating the feedback circuit of sensor, we draw from experiment, when corona electrode is at 12000 volts,
The D2 of passive electrode is at 8mm, D3=20mm, and the plate part broadband of passive electrode is at 38mm
Time, electret filter material plane exists with the plan range of passive electrode corona electrode one end dorsad
The distance of 30mm to 50mm all be enough to dynamically supplement the polarizability of electret filter material decay.
The release of this programme provides one, low windage to VMC (Ventilation Mechanical Control System) field, and energy-conservation, high absorption is imitated
Rate, the new wind air cleaning system of sterilization.
The invention have the advantage that due in atmospheric dust charged particles neutralization or due to dust
The calm shielding action producing electrostatic force, can cause the polarization phenomena of electret weaken or disappear,
Make it lose the adsorption to dust granules, formed to make electret regain energy
Strong electret, needs to make its neat polarization arrangement that dust granule is presented ratio commonly
The most powerful effective absorbability of passive electret.The invention enables when the air of air inlet passes through
When at least one ionization occurs pole corona electrode, the gas particles in air is ionized, after ionization
Granule by with the attraction of corona electrode opposite potential collector and adsorb on collector, when
After the granule of partial ionization crosses collector, the ion gas of this part charged effusion collector
Body granule enters electret filter film and charges to electret, makes to be neutralized malalignment after electricity
Dipole, regains energy and marshalling, thus presents dust granule and compare ordinary passive
The most powerful effective absorbability of electret, the invention by electrode ionization air
Gas particles is as a kind of electric pump charged to electret, and is that one can pass through high pressure and thing
The electric pump that reason distance adjusts.The present invention electric pump effect by ion electrode structure, carries further
The high adsorption to granules such as dusts, and the function again killed to pathogenic bacteria, make up
Ion electrode dust collecting effect, not as the defect of HEPA drainage screen, make use of again electret simultaneously
Because the effect of electrostatic field filters eyelet without the least so that electret filter material windage only has
About 1/3rd of equal filter effect HEPA high efficiency particulate air.
The present invention provides one to air purification field, and low windage is energy-conservation, high adsorption efficiency,
The air filter of sterilization.
Above-described is only the preferred embodiment of the present invention, it is noted that for this area
Those of ordinary skill for, without departing from the concept of the premise of the invention, it is also possible to do
Going out some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (10)
1. an air cleaning high-pressure ion electret purifier, it is characterised in that include that at least one clean unit i.e. ion electrode group, described ion electrode group include and set gradually with lower component according to the direction of air flowing:
At least one corona electrode, described corona electrode with described collector institute band electromotive force and the rightabout electromotive force of corona electrode；
At least two collector, band and corona electrode opposite potential in described collector；
At least one electret being made up of electret filter film；
When the air of air inlet is by least one corona electrode, gas particles in air is ionized, granule after ionization by with the attraction of corona electrode opposite potential collector and adsorb on collector, after the granule of partial ionization crosses collector, the ion stream gas particles of this part charged effusion collector enters electret filter film and charges to electret, after making to be neutralized electricity, the dipole of malalignment, regains energy and marshalling, thus dust granule presents the most powerful effective absorbability than ordinary passive electret.
Air cleaning high-pressure ion electret purifier the most according to claim 1, it is characterized in that, described often group ion electrode group includes the thread corona electrode of a series of multiple electrical connection, each corona electrode is parallel to each other, the ionization limit of all of corona electrode is distributed in approximately the same plane, and the distance between neighboring corona electrodes is D1；
The electrode interacted with corona electrode is two or more passive electrode, it is parallel to each other between each passive electrode, each passive electrode includes that plate part and each passive electrode are circular arc the ionization limit with the most independent arc towards corona electrode direction, described passive electrode series is respectively in air inlet and the left and right sides in corona electrode downstream, the plane that the plane that series of collection electrode each self-ionization limit is formed is formed with corona electrode silk series ionization limit is parallel, and the distance between neighboring collecting electrode is D2；Described D1 distance >=D2 or≤2*D2-1；
The plane that the plate part of described passive electrode is formed with thread corona electrode series ionization limit is mutually perpendicular to, plane determined by corona electrode series and passive electrode series ionizing plan range determined by limit is that D3, D3 are not more than 3*D2；Described passive electrode has orthogonal length and height dimension, to adjust horizontal air-flow direction；
What the plane that described electret is formed and passive electrode series end face were formed plane is parallel to each other, and is separated by certain space length；The ion stream crossing described passive electrode becomes the charging electric pump of electret dipole.
Air cleaning high-pressure ion electret purifier the most according to claim 2, it is characterized in that, described corona occurs pole to be made by the fine rule conducted electricity, preferably tungsten filament, silver-plated silk, gold-plated silk, molybdenum filament, filamentary silver or spun gold, or wherein two or more weaves or is mutually entwined, diameter range is 。
Air cleaning high-pressure ion electret purifier the most according to claim 1, it is characterized in that, described passive electrode group is made up of at least two passive electrodes, each passive electrode includes that the leading edge of flake main body and flake main body is cylindric towards corona electrode direction, being that a circular cylinder is protruding, top view is shown as the pattern of a near circular；Preferably, the cylindrical cross-sectional diameter of described passive electrode is 3-8mm, and the thickness of the flake main body being connected with cylinder is 0.5-1mm, preferably, described passive electrode is prepared by conductive material, such as aluminum, copper, rustless steel, graphite, conductive plastics or their composite.
Air cleaning high-pressure ion electret purifier the most according to claim 4, it is characterised in that described collector is made up of at least one collector assembly, different collector assemblies have different resistance coefficients；Preferably, the collector assembly of described collector is arranged from high to low according to resistance coefficient, and consistent or reverse with the direction of air flowing；Preferably, all described collector equipotential link；Preferably, the collector assembly that on described collector, distance corona occurs side, pole farthest is provided with the contact being connected with power output end.
Air cleaning high-pressure ion electret purifier the most according to claim 4, it is characterised in that connected by slot or jack between the assembly of described adjacent collector pole.
7. according to the air cleaning high-pressure ion electret purifier described in claim 1, it is characterised in that described corona electrode connects positive source or ground connection, described passive electrode ground connection or connection power cathode；Preferably, described corona electrode and/or passive electrode are that non-combustible and conduction metal material is made.
8. according to the arbitrary described air cleaning high-pressure ion electret purifier of claim 1 to 7, it is characterized in that, described electret is the high molecular polymer filtering material with Electrostatic Absorption performance after carrying out polarization process, produced saturation intensity when its polarization intensity all arranges consistent much smaller than electret filter material overall all dipoles, utilize the ion stream crossing passive electrode to charge to described electret, thus play the effect of an electret electric pump.
9. according to the arbitrary described air cleaning high-pressure ion electret purifier of claim 1 to 8, it is characterised in that the polarization intensity of electret is directly proportional by it to the intensity of ion electric field；Preferably, the polarized electric field intensity suffered by described electret filter material is inversely proportional to the physical distance of electret filter material plane with passive electrode plate plane；Preferably, described electret is Polymer electrets material or high-insulativity fluoropolymer material is prepared, such as politef (PTFE), FEP fluorinated ethylene propylene copolymer (FEP), Kynoar (PVDF) etc. or their composite.
10. an air cleaner, it is characterized in that, described air cleaner includes the arbitrary described air cleaning high-pressure ion electret purifier of claim 1 to 9, and for supplying above-mentioned corona generation electrode and collector current potential and producing the power supply of the electric field causing corona discharge between.
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| CN111405740A (en) * | 2020-04-20 | 2020-07-10 | 南京苏曼等离子科技有限公司 | Low-temperature plasma mask sterilization repair electret machine and method |
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| CN114636265A (en) * | 2020-12-16 | 2022-06-17 | 合肥美的电冰箱有限公司 | Sterilization equipment and refrigerator |
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