CN1727277A - Oxyanion generation tube - Google Patents

Abstract

An oxygen ion generating tube is composed of a hollow insulating circular tube, a pair of discharging coils, and an induction coil. Its advantages are lower working voltage, high power to generate oxygen ions and minimal generation of unipolar ions (ozone and CD).

Description

Oxygen ion generating tube

Technical field

The present invention relates to a kind of ionization of air technology, relate in particular to a kind of ionization of air technology of in cleaner air package, using.

Background technology

It is more and more serious that the development of modern civilization is polluted The Surroundings in Cities, and the raising of people's quality of life is also more and more higher to the demand of fresh and clean air.Now, reach purposes such as control of dust, sterilization, taste removal by the function of improving central air-conditioning in the building of city, the process of imitation the Nature purifying air reduces by the threat of airborne epidemic disease to health of people.Self-purification function in the Nature ecotope is that the airborne negative ions of dependence (mainly being oxonium ion) acts on aerial floating dust (can suck particle), bacterium and organic volatile (TVOC) etc. swim, it is with bipolar contrary sign current potential, touch and make its decomposition or the last landing of variation ground (the earth is a zero potential), be actually a kind of oxidising process.Usually also be to adopt the way of ionization of air (artificial corona) to reach purposes such as control of dust, sterilization, taste removal in the field of artificial purifying air.

At home and abroad the ionization of air technology in the building air purification field realizes usually in the following way:

1, adopt the point discharge principle to make near most advanced and sophisticated ionization of air, it is anodal general with sharper keen needle point (stainless steel needle or through the tungsten pin of special processing), the negative pole form has the flat board of employing, polygon hole and circular hole, because the geometrical shape of its needle tip is difficult to be consistent, under high pressure because the cause passivation soon of oxidation, the potential barrier increase that reduces to make the electron detachment metallic surface of surface curvature, keep its discharge that continues and to add high-voltage, keep it from the effusive current value of negative pole, thereby make the shank discharge, too high voltage has when sharper keen at the tip and can produce more ozone and form nitrogen protoxide, this all is harmful to the health of human body and the safety of equipment, so this mode seldom has use now in the building air purification field;

2, adopt electro-conductive fiber Shu Duantou to discharge in the mode of virtual negative pole, it is the distortion of preceding a kind of mode, generally is used for anion generator;

3, discharge to the internal surface of flat board, Polygons post hole and cylindrical hole in the deep camber surface of the thin circle of employing metal bare wire, this develops from boiler electrostatic precipitation principle micro and forms, it can make effectively, and electric charge arrives on the particle collector of relative polarity on the airborne floating dust lane, in system design, axial flow also can play good dust collecting effect if any mechanical screening device after leaving electric field.But although near the ionic concn the online electric field is bigger, because of being subjected to the tied mechanism of electric field negative pole, it is difficult to inject a large amount of negative ions in room air;

4, adopt the deep camber surface of thin circle metal bare wire to concentric netted arc surface discharges with it, when air-flow flow through from netted arc surface its with thin circle metal bare wire etc. carry negative ions after the potential field and enter the interior space, the negative ions that is diffused in the interior space can reach the ground effect that purifies air preferably, and because it does not need to load any particle collector, replace original air port and can not reduce the exit face wind speed, should this can be used for unit (be referring to my number of patent application 200310108137.0 application documents) based on the wind disc system.Form long oxygen of life-span bunch because its negative ions that produces respectively is difficult, therefore limited its use in variable air rate (newly) unit in the Central Air Conditioner Used in Buildings system, can only be applied to use in the fan coil system room, or arm exit, air channel;

5, the ionization tube that adopts creeping discharge band malleation caterpillar is external main product in the building air-purification system, it adopts the mode of ac high-voltage alternately to produce negative ions on an electric field, its main discharge mechanism is that the intensive circular hole of punching out on the sheet metal produces marginal discharge, external wire sets loads certain voltage as the ion derivation mechanism, radially divergent state is made in the space, this system adopts high-frequency ac highly compressed power supply mode to be generally operational in about AC 2500V-2750V, frequency is in the 28-32KHz scope, apart from ionization tube 5cm place, the concentration of the negative ions that it alternately produces is in 2-3 * 10 ⁶/ CM ³In contrast to some domestic devices; its aspect operating voltage well below the electric field system of said structure (1-4); can alternately produce negative ions on same electric field, and be diffused in the space can be than being easier to form oxygen bunch, this purifies for building very positive meaning.But this is for the effect that can not play purifying air in the relatively poor building environment of IAQ (indoor air quality) in the short time, if the high-voltage modulation during near 3000V, will be produced bigger ozone.

Introduce the electric field of general structure in front, as (1-3) under state than low-energy state, be difficult to accomplish to inject a large amount of ions to room air, be because it can't make ionization of gas under low voltage, because the converging action of negative pole, also be difficult to the magnetism of escape negative pole even if there is ion to produce to it, therefore, air purifier is more in design and practice at home is the principle that adopts electrostatic precipitation, but when in a single day ventilation system forms, loading any filtration unit that is used for control of dust therein all can influence system's wind speed and blast, solves that the purpose that purifies air in the building of central air-conditioning is installed is the comparison difficulty so reach with above-mentioned principle.

In sum, in the building air-purification system, adopt ionization technique to improve in the indoor air quality, usually can bring some negative impacts:, can influence the safety of HUMAN HEALTH and equipment as ozone in ionization process and nitric oxide production increase; If increase duct resistance or reduce the tuyere line wind speed, can destroy the air-supply requirement of original central air conditioning system (HVAQ) to building; High frequency electric source during ionization of air can bring some influences to electrical network; In the ionization of air process, can not in the short time, play the effect of purifying air etc.

Summary of the invention

The purpose of this invention is to provide a kind of novel oxygen ion generating tube, can improve the concentration of oxonium ion at short notice, in ionization process, certain single-stage ions such as ozone and nitrogen protoxide can be reduced to minimum.

Another purpose of purpose of the present invention provides a kind of novel oxygen ion generating tube that can use low voltage of alternating current, can not influence electrical network and normally move when oxygen ion generating tube is worked.

A kind of oxygen ion generating tube, comprise hollow insulation pipe, a pair of discharge coil and a ruhmkorff coil, it is characterized in that, described discharge coil by two parallel equidistant be coiled in described hollow insulation circular tube external wall metal wire constitute, described ruhmkorff coil is made of the inwall coiling of a wires along described insulation pipe, and in parallel with the wires in described the above discharge coil of hollow insulation circular tube external wall.

Described oxygen ion generating tube is characterized in that, described hollow insulation pipe is made by industrial glass or stupalith.

Described oxygen ion generating tube is characterized in that, parallel equidistant is provided with two spiral slots that are used to place two metal wire on the outer wall of described hollow insulation pipe.

Described oxygen ion generating tube is characterized in that, described metal wire is metal bare wire or the naked band of narrow metal.

Described oxygen ion generating tube is characterized in that, described metal wire is metal bare wire and the naked band of narrow metal.

Described oxygen ion generating tube is characterized in that, a wires and connect power cathode on described ruhmkorff coil metal wire and the hollow insulation circular tube external wall, and another wires connects positive source on the described hollow insulation circular tube external wall.

The principle of work of oxygen ion generating tube of the present invention is, after oxygen ion generating tube incoming transport high-voltage power supply, between a pair of discharge coil metal wire that coils on the hollow insulation circular tube external wall be placed on hollow and insulate and form voltage difference between the ruhmkorff coil of round tube inner wall, under certain voltage effect, gas between a pair of discharge coil metal wire the two poles of the earth (line) on the hollow insulation circular tube external wall is ionized, when being ionized geseous discharge, two interpolars between metal wire, form induced field current, this induced field current is with the ruhmkorff coil of chopping disk around hollow insulation round tube inner wall, in the metal wire of ruhmkorff coil, will produce induced current, flow in the process of earthing pole at induced current, it will form an alternating magnetic field, when the ruhmkorff coil that is coiled in hollow insulation round tube inner wall is under the comparatively sparse state, hollow insulation pipe inner inductive coil is not cancelled at the radial magnetic line of force, can influence the traffic direction of negative ions change in magnetic field that in the positive and negative electrode of metal wire discharge, moves on the contrary, make it be divergent shape, to space divergence, comparatively fast reach the concentration that increases charged ion in the air, positive negative oxygen ion is diffused in the space and small-particle dust, the combination of objectionable impurities such as aerosol and germ, make it form the bipolar molecular grouping of larger particles, be deposited to ground rapidly, obtain the optimization of indoor air quality.

Oxygen ion generating tube provided by the invention is compared with existing apparatus, owing to utilize the induced field current that produces in the ionization process to respond to another metal wire, make another alternating magnetic field of its generation, react on the negative ions that in positive and negative electrode, moves, change the traffic direction of its charged ion in magnetic field, make it be divergent shape, to space divergence, can comparatively fast reach the concentration that increases charged ion in the air, reach the purpose of purifying air.

Oxygen ion generating tube provided by the invention can be reduced to minimum owing to adopt low voltage of alternating current with certain single-stage ions such as ozone and nitrogen protoxides in ionization process, can not bring side effect; In use can not impact electrical network.

Oxygen ion generating tube provided by the invention need not increase other any equipment at air outlet, can not influence ventilation rate.

The principle of work of oxygen ion generating tube provided by the invention will be further elaborated in conjunction with the accompanying drawings.

The accompanying drawing summary

Fig. 1 is an oxygen ion generating tube structural profile synoptic diagram of the present invention.

The synoptic diagram of alternating magnetic field when Fig. 2 a is oxygen ion generating tube of the present invention work.

Fig. 2 b is the enlarged diagram that K is ordered among Fig. 2 a.

Fig. 3 be in the oxygen ion generating tube of the present invention magnetic field to the synoptic diagram that influences of ion diffusion.

Embodiment

Referring to Fig. 1, oxygen ion generating tube of the present invention comprises hollow insulation pipe 1, is coiled in to a pair of discharge coil metal wire 2 and metal wire 3 parallel equidistant on the hollow insulation circular tube external wall, and helical pitch is 2t (a naked distance); Ruhmkorff coil metal wire 4 is along the inwall coiling of hollow insulation pipe 1; Metal wire 2 is connected on the positive pole of power supply, metal wire 3 and ground connection after an end of metal wire 4 is in parallel.

The principle of work of oxygen ion generating tube of the present invention as shown in Figure 2, after metal wire 2 incoming transport high-voltage power supplies, metal wire 3 and metal wire 4 ground connection, form voltage difference between positive voltage on the metal wire 2 and the metal wire 3, at the ionization of gas that impels under certain voltage between metal wire 2 and metal wire 3, because ionization of gas between the two poles of the earth (line) of metal wire 2 and metal wire 3 formation has also just formed induced field current, I is electric current (ion motion) direction as shown in Figure 2.Induced field current is pushed negative ions to negative pole from positive pole.The induced field current that ionization of gas produces produces alternating magnetic fields, this alternating magnetic field also is placed on induction the metal wire 4 in the hollow insulation pipe, the induced current that produces in metal wire 4 is flowing in the process of earthing pole, to form another alternating magnetic field, when metal wire 4 is under the comparatively sparse state, metal wire 4 is not cancelled at the radial magnetic line of force, and can influence the negative ions that between positive and negative electrode, moves, can change the traffic direction of charged ion in magnetic field, as B among Fig. 2 is magnetic field component perpendicular to paper, F is that ion is subjected to the running orbit under the magnetic field force effect, and it is divergent shape.When there is magnetic field in the space, ionic motion be not simple in positive and negative electrode the arrival of a near linear utmost point opposite polarity with it, ion itself is as charged particle, in magnetic field when the motion of charged particle such as cutting magnetic line movement, its can be subjected to direction of motion (sense of current) and with magnaflux method to the vertical power of angle, therefore, the ion of this moment is moving linearly no longer, but makes circumferential motion.Below be because the simple derivation of the diffusion process that magnetic field causes.

As shown in Figure 3, suppose that the vertical paper in magnetic field is outside, the ion that passes surface element dA from the left side in vertical direction is from the Rameau radius r so _LA following circle on somewhere collision and come; The particle that passes surface element dA from the right side is then from top circle collision.If leading the distance of impact point along arbitrary distance from dA is S, then the flux that comes from the left side is:

Formula 1-1

The flux that comes from the right side is:

Formula 1-2

Wherein S go up and S under be respectively circle and go up round track length down.

Suppose that n only changes in the x direction, Taylor series expansion n (x) then arranged, and remain into the second stage, can get:

Formula 1-3

Utilization illustrate angle coordinate:

S _Down=r _Lθ _Down, S _On=r _Lθ _On,

X _Down=-r _LSin θ _Down, X _On=-r _LSin θ _On, formula 1-4

Wherein rL is the Rameau radius.Because θ makes no distinction of rank, be a radian, so wushu 1-4 substitution formula 1-3 gets:

${\mathrm{\Γ}}_r=\frac{\stackrel{\←}{v}}{6\mathrm{\λ}}\frac{\mathrm{dn}}{\mathrm{dx}}\left\{{\∫}_0^{\∞}(-r_L\sin \mathrm{\θ})r_L{e}^{-(-\mathrm{rL}/\mathrm{\λ})\mathrm{\θ}}\right\}\mathrm{d\θ}-$

${\∫}_0^{\∞}\left(r_L\sin \mathrm{\θ}\right)r_L{e}^{-\mathrm{rL}/\mathrm{\λ\θ}}\mathrm{d\θ}\},$

So

${\mathrm{\Γ}}_{\⊥}=-\frac{\mathrm{\λv}}{3}\frac{1}{1+{\left(\frac{\mathrm{\λ}}{r_L}\right)}^2}\frac{\mathrm{dn}}{\mathrm{dx}},$

Must define according to spread coefficient $\mathrm{\Γ}=-D\frac{\mathrm{dn}}{\mathrm{dx}},$ We obtain new spread coefficient:

$D_{\⊥}=\frac{\mathrm{\λ}\stackrel{\←}{v}}{3}\frac{1}{1+{\left(\frac{\mathrm{\λ}}{r_L}\right)}^2},$

Here it is, and charged particle crosses the spread coefficient in magnetic field.Spread coefficient during known no magnetic field $D_0=\frac{1}{3}\mathrm{\λ}\stackrel{\→}{v},$ So

$D_{\⊥}=\frac{1}{1+{\left(\frac{\mathrm{\λ}}{r_L}\right)}^2}{D}_0,$

Because $\mathrm{rL\ωe}=\stackrel{\←}{v},$ ω e is a processional frequency, the average time interval between twice collision $\mathrm{\τ}=\mathrm{\λ}/\stackrel{\←}{v},$ So

$D_{\⊥}=\frac{D_0}{1+{(\mathrm{\λ}/r_L)}^2},$

When B=0, r _LSo → ∞ is D _⊥→ D ₀λ/rL generally speaking＞＞1 in geseous discharge, so

$D_{\&perp;}\&ap;\frac{D_0{\mathrm{<figure-callout\; id="2"\; label="r\; L"\; filenames="A20041005325800111.png"\; state="\{\{state\}\}">r</figure-callout>}}_L^{}}{{\mathrm{\&lambda;}}^2}=\frac{\mathrm{\&lambda;}\stackrel{\&LeftArrow;}{v}}{3{\mathrm{\&lambda;}}^2}{\left(\frac{m\stackrel{\&RightArrow;}{v}}{\mathrm{qB}}\right)}^2=\frac{m^2\stackrel{\&RightArrow;}{v^2}}{3\mathrm{\&lambda;}{q}^2{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="A20041005325800111.png"\; state="\{\{state\}\}">B</figure-callout>}}^2},$

As seen $D_{\&perp;}\&Proportional;\frac{1}{{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="A20041005325800111.png"\; state="\{\{state\}\}">B</figure-callout>}}^2}.$ Because $\stackrel{\&RightArrow;}{V}=\sqrt{\frac{8\mathrm{kT}}{\mathrm{\&pi;m}}},$ So $D_{\&perp;}\&Proportional;\frac{\sqrt{m}}{{\mathrm{\&lambda;B}}^2}{\left(\mathrm{kT}\right)}^{3/2};$ For room temperature and the mean free path of coexisting, because mass of ion is more than big many of mass of the electron, so the ionic spread coefficient crosses the spread coefficient in magnetic field more than electronics, be Di＞＞De, this is because cross the result that the diffusion in magnetic field is the random change of particle Rameau circle central position, each collision back, the order of magnitude of this side-play amount is identical with the Rameau radius, because ionic Rameau radius is big, so it spreads soon.

Oxygen ion generating tube of the present invention only need be operated in lower voltage range, this is to have determined that because of its electronics number of plies that is had of all gases molecule in the air and outermost electron number it obtains excitation, ionized energy state rank at electric field, shown in following table (selecting from 15031.519P15 table 1.6):

Gas	Excitation energy We[eV]	Ionization energy Wi[eV]
			Oxygen O 2O water N 2O nitrogen N 2N hydrogen H 2H helium He	7.9 19.7 9.15 7.6 6.3 2.38 10.33 7.0 10.6 19.8	12.5 13.61 12.59 15.6 14.54 15.4 13.59 24.47

1[eV]＝1.6×10-19[J]＝1.6×10-12[erg]

Give on the structure from branch, because oxygen molecule compares with other gas molecule and have more electricity and give the number of plies, and its outermost two electronics are that two nucleus are total and do not satisfy outermost electronic number, so its easiest being ionized, and become oxonium ion O ₂ ⁺Or O ₂ ^-If oxygen molecule obtains higher energy in electric field, just be very easy to become Sauerstoffatom, single Sauerstoffatom is very active, is easy to form ozone, nitrogen protoxide and hydrocarbon.

Therefore must consider that ion generator can only impose lower excitation energy to being ionized gas, make that to be ionized in the gas with the oxygen molecule be to lead to carry out ionization, Here it is we in electric field designs with lower voltage-operated reason.

By above elaboration, oxonium ion generator provided by the invention, can satisfy at first the low-energy state excitation oxygen molecule of setting is oxonium ion, and can produce alternating magnetic field from the lotus root inductance by it and make oxonium ion in electric field to space divergence, proves that by embodiment its effect is as follows:

(1) voltage operates in lower voltage range, and the probability of ozone and NO production is significantly reduced.The ionic valve that experiment showed, said structure can encourage gas to produce the ionic threshold voltage end very, just can obtain the order of magnitude 10 at AC800-900V ⁶/ cm ³Negative ion concentrations;

(2) actual motion is when AC1500-2000V is interval, its ozone to the background increment less than 0.015ppm, this explanation is operated in lower energy state interval, ionic valve excitation gas particle produces ionization based on oxygen molecule;

(3) outside ionic valve, produce the positive negative oxygen ion of higher concentration.Comparing with the ionization tube that is used for indoor air purification in the world, is under its condition of 50% at diameter, and operating voltage is its 65% o'clock, wants high 5-10 doubly apart from outside surface with the ionic concn under equidistant.

In sum, the oxonium ion pipe that this paper proposed can be avoided the mentioned in front some shortcomings part to the electrostatic ionic device, thereby can be applied to the aspects such as environmental improvement that the building inner air purifies and the dirty gas of building discharges.

Claims (6)

1. oxygen ion generating tube, comprise hollow insulation pipe, a pair of discharge coil and a ruhmkorff coil, it is characterized in that, described discharge coil by two parallel equidistant be coiled in described hollow insulation circular tube external wall metal wire constitute, described ruhmkorff coil is made of the inwall coiling of a wires along described hollow insulation pipe, and in parallel with the wires in described the above discharge coil of hollow insulation circular tube external wall.

2. oxygen ion generating tube as claimed in claim 1 is characterized in that, described hollow insulation pipe is made by industrial glass or stupalith.

3. oxygen ion generating tube as claimed in claim 1 is characterized in that, parallel equidistant is provided with two spiral slots that are used to place two metal wire on the outer wall of described hollow insulation pipe.

4. oxygen ion generating tube as claimed in claim 1 is characterized in that, described metal wire is metal bare wire or the naked band of narrow metal.

5. oxygen ion generating tube as claimed in claim 4 is characterized in that, described metal wire is by metal bare wire and the naked band of narrow metal.

6. oxygen ion generating tube as claimed in claim 1 is characterized in that, a wires and connect power cathode on described ruhmkorff coil metal wire and the hollow insulation circular tube external wall, and another wires connects positive source on the described hollow insulation circular tube external wall.

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