CN105642056A - System for removing suspended particles from gas medium - Google Patents

Abstract

Described is a system for capturing and removing suspended particles in and from a gas medium. The system comprises a charged assembly (0101), a forced ventilation assembly (0102), a filtering assembly (0103), and a pipeline (0104) allowing gas to pass through and containing the above assemblies. The system is characterized in that the filtering assembly (0103) comprises at least two electrodes with different electric potential differences and a poor conductor fibrous material arranged between the electrodes.

Description

Gas medium suspended particulate substance cleaning system

Technical field

Apparatus of the present invention belong to purification and filtration art, relate to one and remove purification and the filtration system of suspended particulate substance in gas medium (including but not limited to air).

Background technology

HEPA is purified treatment mode modal on the market abbreviation of English high efficiency particle air filter HighEfficiencyParticulateAirFilter (HEPA be). HEPA adopts the mode that Purely mechanical filters, thus is different from ion, electrical type cleaning equipment. The big particle capture such as pollen, antibacterial, dust, due to technical matters, are easier, but for particle diameter less than 2.5 microns of particles below, particle diameter are more little, catches more difficult by general HEPA filter screen. This kind equipment generally speaking windage is bigger, it is necessary to powerful for providing aerodynamic equipment, thus can consume more electric power, manufacture bigger noise. The main weak point of noise, energy consumption aspect HEPA filtration system just.

Additionally, for the system or the equipment that adopt HEPA, it is impossible to the problem ignoring its secondary pollution. Lao Lunsi Berkeley National Laboratory one research of 2014 of the U.S. shows, the more pollutant that used the Household Air Purifier not changing filter element after a period of time in time due to its internal reservoir, it is likely to not only lose the function of purification, pollution can be brought to indoor environment on the contrary. (Hugo, 2014), owing to replacement cost is higher, secondary pollution generally recognizes the factors such as deficiency, causes the user of many HEPA air purifiers can not change filter element in time, and is in the middle of the threat of another kind of pollution.

Another common filter plant belongs to the category of electrostatic, electronics, ionic species purification. This kind equipment is typically based on the principle of industrial circle electric dust collector, it is generally all utilize " parallel plate type electric field " to catch electrically charged particle (such as CN101130180B, WO2012016481A1, CN101406798 etc.), the purpose of industrial dedusting is in that to prevent the equipment of industrial product discharge to air, without considering the demand (Tan Tian etc., 1984) that air quality is required higher ground such as such as indoor living space, toilet etc. Except the common board-like system of parallel plane, parallel plane has been done some conversion by some other system, as basic board-like seizure electric field is transformed to the checkered manner of porous by CN1980744B, but in densely covered grid, arrange that the collecting electrode of different electric potential difference is relatively complicated; If adopting the method increasing buried electrode in described fluted plastics sheet pore structure, manufacturing cost can be increased again and reduce seizure area; If adopting the embodiment of simple metal plate hole structure, then compare traditional structure and be difficult to tangible improved efficiency.The combination that CN101374605B then adopts board-like seizure electric field rear to add a filter element again because the effect of its electric field seizure granule is unsatisfactory. Increase the purification efficiency that can improve depurator in a stratification theory filtered. But such electrostatic adds set-up mode simply a kind of simple combination in fact of filter screen. Common parallel plane is then transformed to two parallel helical surfaces by winding by the patent such as US6203600 that CN102164678B, CN1221358A and its applicant announce in other countries. Though capture region area so can be increased, but increase limited.

White ratio (Whitby, 1978) sum up the mode of 3 kinds of particle size distribution according to the surface area of atmospheric pollution particulate matter and particle size distribution relation, namely like root core mould (particle diameter is less than 0.1 ��m), accumulation mode (particle diameter more than 0.1 ��m less than 2 ��m) and coarse grain mould (particle diameter is more than 2 ��m). In urban atmosphere, the distribution of particulate matter belongs to accumulation mode and coarse grain mould mostly. Wherein gathering nuclear membrane granule not easily to remove, majority is secondary aerosol species, and most sulphate particles belong to this mode (Hu Min etc., 2005).

In above gas medium particle to the murder by poisoning degree of human body by following factors composition: the toxicity of particle composition, the quantity of particle, particle particle diameter (due to less granule can directly from pulmonary enter people blood, so the hazardness of this partial particulate especially big), the health degree (ability of human body clean respiratory tract) of respiratory tract, granule characteristic (especially ultra-fine grain has antibacterial, virus, heavy metal etc.). The serious atmospheric pollution that China frequently occurs in recent years, the gray haze that namely degree is more serious, what wherein contain is just belonging to accumulation mode and coarse grain mould exactly to the superfine particulate matter that harm is bigger, because the granule that this part is less, significant portion can enter human body alveolar by respiratory tract, and (Wu converts, 2012) if in the face of so comparatively serious pollution, existing system or device seem not enough. The system that a large amount of less pollution particulate matters also can effectively be removed by market in urgent need.

But, domestic for the research of the component of suspended particle, concentration and source lacking of property of aspect in different gas mediums at present, especially that the aspects such as natural source and biogeochemical cosmogony is not enough especially. (Hou Meiling etc., 2012) so most civilian cleaning equipment and not high for suspended particulate substance purification efficiency that PM2.5 etc. is less or ultra-fine.

Electret fiber is a kind of fiber that can be more charged. Because of its electrostatic force, relatively common filter screen can improve dust catching rate and gas filter efficiency. Electret also obtains some application in recent years as purifying adsorbing material (such as CN102164677B) in the field of civilian purification. But the voltage of electret fiber generally only has the supreme kilovoltage of hundreds of (Yang Jingquan etc., 2009). Owing to electric field intensity is low, and cannot adjust magnitude of voltage, there is bottleneck in capturing efficiency. Cannot regenerating after this kind of materials'use, be not easy to degraded, its product life cycle cost and environmental protection cost are all higher, are unfavorable for that market is popularized.

Also has some ancillary techniques such as active carbon filtering device, usually used as the auxiliary device of a kind of air cleaning facility. Activated-carbon device can adsorb certain antibacterial and dust and harmful gas at short notice, and inorganic matter absorbability is general. Absorbent charcoal material, after saturation, is difficult to regeneration.(Yin Weidong, 2002) absorption reaches after to a certain degree, because not having bactericidal effect, easily becomes the procreation body of antibacterial on the contrary, and the filter element changed also faces the difficulty of harmless process. For another example graphene-based adsorbing material (such as CN103407997A) and activated carbon, electret fiber are similar, there is also the problem that cannot regenerate, if processing with serious pollution air dielectric, losing efficacy fast.

Filtering two ways except above-mentioned electric precipitation and HEPA is, except cleaning equipment principle main in the market, also have the equipment of some other technologies principles also commercially can see: the technology such as such as ozone, ultraviolet, photocatalyst, ion.

Existing patent documentation has some to be mainly utilize ozone air to be carried out disinfection the device (such as: CN103673124A, CN201996881U, CN86106909 etc.) of sterilization, and ozone is owing to can stimulate human respiratory to exert an adverse impact. For this, the higher limit clearly limiting indoor ozone concentration in CNS " GBT18883-2002 Indoor Air Quality standards " is 50ppb, actively produces ozoniferous equipment generally all can not meet this standard so should not be used in the environment such as office work inhabitation so this kind of.

Other purification styles such as catalytic pyrolysis such as ultraviolet, photocatalyst mode is then difficult to play clean-up effect in the interior space. American energy Chinese Ministry of Environmental Protection it is expressly intended that this two classes mode for indoor air purification without obvious effect. (EPA, 2008) is additionally, the life-span of health and the plastic of domestic also can be constituted a threat to by ultraviolet leakage. Even and if catalytic pyrolysis has the principle of rational decomposing pollutant, it generally can not illustrate how and whether health can be produced impact by the product after decomposing. Therefore verify that except needs it decomposes except usefulness, it is also desirable to research its by-product impact on health further.

Existing apparatus also has generation ion such as CN102946910B, CN105115054A, CN105042717A etc. to be exported as output object by ion. The most important thing is: the pollution that the entrance of ion itself can not directly eliminate in gas. Furthermore, ion generally can produce (adding in such as CN85102037 for eliminating the ozoniferous device of companion) together with ozone, it is discharged into the anion of air it could also be possible that the pollution particulate matter (not be equal to the anion detected in fresh air) of bear electricity, therefore the device producing ion should not be arranged on the region of mankind's activity. This drawback makes the use scope of such purifier limit to very much. Additionally the unfavorable factor by plasma diffusing W,Mo to the interior space is, after these ions or charged granule enter into air, neighbouring surface will be the captor (such as: metope) of these granules, and these surfaces can be dirty because gathering more granule, be not easy to cleaning.

In sum, if have a kind of high-efficient purification and filter plant can effectively remove bigger in gas medium, relatively easily remove particulate matter (particle diameter>2.5 ��m), can effectively remove again suspended particulate substance less in air (particle diameter<2.5 ��m), such equipment is nearly free from again ozone or ion etc. and is likely to threaten the composition of health, can manufacture with rational cost again, then the great market demand will be had simultaneously.

Summary of the invention

An object of the invention is provided with a kind of high-efficient purification and filtration system, this system can effectively remove the pollution particulate matter (particle diameter>2.5 ��m) removed bigger in gas medium, relatively easy, can effectively remove again less suspended particulate substance that conventional purification equipment is difficult to remove (particle diameter<2.5 ��m), and kill antibacterial therein and virus, and such system is nearly free from ozone or ion etc. and is likely to threaten the composition of health.

According to the present invention, provide a kind of purification removing suspended particulate substance in gas medium and filtration system, this system includes the pipeline holding said modules that charged assembly (0101), forced ventilation assembly (0102), filter assemblies (0103) and gas can pass through, it is characterized in that described filter assemblies (0103) comprises at least two electrode that electric potential difference is different, between described electrode, have non-conductor fibre-like material.

The structure of fibrous material preferred not close arrangement, has space to be available for air-flow and passes through between fiber, under the effect of high-field electrode, fiber is charged and generation electric field in the space at its interval, and in fibre-bearing filter element, the filling proportion of fiber is 1-15%. The diameter of fiber range for 100 ��m-0.01 ��m. Its beneficial effect there is provided the many specific surface area bigger than Conventional plate-type dust arrester, while effectively catching larger particles pollutant, can effectively remove again suspended particulate substance less in air (particle diameter < 2.5 ��m).

The preferred degradable acid fiber of its fibrous material. It provides the benefit that and can manufacture with rational cost, and degradable, environmentally friendly. Acid fiber material can have the excellent function suppressing bacteria breed. The another one of such structure provides the benefit that, owing to air drag is low, it is possible to be substantially reduced plant capacity and noise.

The optional high polymer fiber of its fibrous material. Its beneficial effect is high specific surface area and finely ground particles removal effect equally, and air drag is low.

Its fibrous material is the layer structure of close-packed arrays in another preferred exemplary, has space to be available for air-flow and pass through between layer structure. The beneficial effect of such structure is owing to air drag is low equally, it is possible to be substantially reduced plant capacity and noise.

Wherein high-field electrode is without insulation processing, and gas can pass from electrode; It provides the benefit that the reduction effect that can avoid insulant to electric field intensity.

In another preferred exemplary, the plasma of its charged assembly occurs the most advanced and sophisticated position of pole to adopt the brush tip of carbon fibers.

Electrode (0202) polarity of side close with charged assembly (0101) in its filter assemblies (0103) is consistent with the polarity of plasma generation pole (0602) in this charged assembly (0101), and the electrode of another one side (0201) ground connection. It provides the benefit that, through purified gas medium before leaving system, all of ion is neutralized and is not released in space, has both been avoided that ion is likely to the threat that health is caused, and is avoided that again the secondary pollution that environment is caused by remaining electrically charged particle.

It is also an object of the present invention to provide a kind of charging particle device, a part necessary to above-mentioned high-efficient purification and filtration system. Plasma in this charged assembly (0101) occurs the polarity of electrode of pole (0602) consistent with electrode (0202) polarity of the filter assemblies side near this assembly, and other side (0201) ground connection, wherein electrode has ozone-resistant layer at exposed part surface. Its beneficial effect can avoid the deleterious ozone gas that traditional similar ionization device produces.

Accompanying drawing explanation

Fig. 1 is the axonometric chart that the present invention purifies with filtration system.

Fig. 2 is filter assemblies, comprises two arrays of electrodes sheet and the fibre filtration unit in the middle of it.

Fig. 3 is housing unit, comprises the panel of outer cover body, skeleton and both sides.

Fig. 4 is filter assemblies, comprises fixed and movable two parts.

Fig. 5 is forced ventilation assembly, comprises blower fan and fixing plate etc.

Fig. 6 is charged assembly.

Fig. 7 and Fig. 8 is the other system preferred arrangement of the present invention.

Fig. 9 is another optimal way of charged assembly.

Figure 10 is the filter assemblies arranged according to arcuate motion.

Figure 11 is the filter assemblies according to spherical arrangement.

Figure 12 is the filter assemblies arranged according to zigzag.

Figure 13 is the filter assemblies arranged according to S shape.

Figure 14 is a kind of optimum decision system arrangement of the present invention.

Detailed description of the invention

(the first embodiment).

With reference to Fig. 1, present system includes charged assembly (0101), forced ventilation assembly (0102), the casing assembly (0104) having airflow line function concurrently holding said modules that filter assemblies (0103) and gas can pass through, contaminated gas medium is by the driving of forced ventilation assembly (0102), the direction of arrow shown in figure, first pass through from charged assembly (0101), wherein suspended particulate contaminants is after fully charged, then through filter assemblies (0103), under the effect of high voltage electric field, it is captured by the attraction of Coulomb force, it is retained in filter assemblies (0103). through purified gas medium by filter assemblies ground electrode (0201) as shown in Figure 2, after its residual charge is neutralized, treated gas discharges native system.

In the layout of system, filter assemblies (0103) is necessarily placed at the downstream of air-flow or the exit of system. Experiments show that, the high-pressure section in filter assemblies (0103), between high pressure 8KV-14KV, its any point connecting high-pressure section must other more than conductor part 2cm of system of distance.

In the position relationship of preposition charged assembly (0101) and forced ventilation assembly (0102), it is possible to charged assembly (0101) is arranged in relatively forced ventilation assembly (0102) and is positioned at the more upstream of air-flow; Charged assembly (0101) relatively forced ventilation assembly (0102) can also be adopted to be positioned at the further downstream arrangement of air-flow. First embodiment of the invention adopts the former scheme.

Described system includes a casing assembly (0104). As it is shown on figure 3, casing assembly (0104) utilizes a skeleton (0302) be used for fixing forced ventilation assembly (0102), charged assembly (0101) and filter assemblies (0103) and adjustable electric pressure type high pressure generation power supply and control switch etc.; Including a movable filter element storehouse, and the panel of both sides (0303) (0304), and the outer cover body of surrounding (0301) etc. Outer cover body (0301) should allow gas medium with pressure drop relatively low when pass through. Can adopt any existing known adopt on ventilation, ventilation, air-conditioning, heating installation grid, orifice plate, netted etc. be beneficial to the form that air-flow passes through and provides certain support strength.

Should being beneficial to fluid process with skeleton part inside main body cover, the damping of gas should be adopted as far as possible little setting by it, for instance streamlined as far as possible. Such as expanded material can be adopted to constitute such inner chamber. Experiments show that, purification efficiency can be improved 20-30% by the system arranged through reasonable internal flow.

The present embodiment adopts the scheme of metal shell. If but shell selects insulant, it is possible to the material of selection includes, but is not limited to thermoplastic (such as ABS), polybutylene terephthalate (PBT) (PBT), polyethylene terephthalate (PET), Merlon (PC), polystyrene (PS) etc.

Such as Fig. 4, filter assemblies is divided into fixed and movable two parts. Standing part (0401) is for assisted loading and supports a part of parts of filter element, and movable part (0402) is made up of a movable door and gang switch. User can open hatch door easily and change filter element. When user opens hatch door, gang switch action, the main power source of system is cut off. This hatch door is together with the panel combination of homonymy, and when closing hatch door, panel also closes therewith. The combination of fiber filter storehouse and skeleton and shell notes ensureing air-tightness, it is necessary to the gas medium of purification then all can only pass from filter assemblies (0103).

This filter assemblies (0103) is removably mounted in the mounting assembly in casing assembly by any known and suitable method.

As in figure 2 it is shown, filter assemblies includes the electrode (0201) (0202) that two gases can pass through, electrode package, containing the different at least two electrode of electric potential difference, is around fixed on insulant. Fiber filter parts and filter element (0203) it is provided with between two electrodes. These parts contain fiber fines class material or it has the arrangement of mushy composition body not close and forms, and its arrangement mode can be similar to the form imitating filter screen at the beginning of common air-conditioning. Described fiber gives the dielectric character that it is outside, when same volume, it is provided that the many specific surface area bigger than other common electric precipitation assemblies. Include between the fibers some air-flows can relatively freely through regular or irregular passage, it is ensured that the low windage of described passage. After electrode accesses adjustable electric pressure type high voltage power supply, producing electric field in regular or irregular passage, fibrous material itself is by electric field polarization simultaneously.

Macromole fiber, in adjustable electric pressure type high voltage electric field, is polarized along the direction being perpendicular to battery lead plate. Such as through experimental verification, adopt the purification assembly that nitrocellulose makes can reach good clean-up effect with employing biomass fiber. Owing to providing a consistent electric field higher, additional than electret intensity, this makes the Application Range of material of filter fiber extensive, include but not limited to above-mentioned eco-friendly, the fiber of degraded can be abandoned.

The preferred arrangement mode of this fibrid is for be longitudinally arranged along airflow direction, or forms any direction of certain angle. Filter element finished product can adopt and include but not limited to that machinery, hot sticky or chemical method are reinforced as the relatively-stationary object of shape, for instance have the square of thickness or circular object. Fibrous material accounts for the filling proportion of whole fabric filter element (0203) and is advisable with 1-15%. For different suspended particles, the diameter of fiber is from 100 ��m-0.01 ��m not etc. Fabric filter element (0203) should contain significant proportion, diameter and the suitable fibre composition of ultra-fine grain. Wherein, the arrangement of different material layers can be parallel to electric field, can be perpendicular to electric field, it is also possible to even random arrangement at a certain angle with direction of an electric field. In this preferred exemplary, by the preferred filling proportion of above-mentioned fiber and diameter, the trimmed size of fabric filter element (0203) is between 90-150g/m2. But the invention is not limited in such specification.

Beneficial effects of the present invention also resides in, it is possible to avoid the secondary pollution problem caused owing to misoperation makes system long term accumulation pollute particulate matter in a large number. Due to the increase to high polymer or the range of choice of cellulosic source; make from the viewpoint of cost and environmental conservation; user is relatively easy to accept such a idea: cleaning system should adopt consumptive material or even droppable material; this consumptive material both environmental friendliness, cost is also within the scope of very easy acceptance.

Furthermore, the present invention can abandon the indirect advantage of material and be in that, it is to avoid the complexity that in conventional purification apparatus, cleaning apparatus for self increases to system, when it also avoid the work of self-cleaning system such as vacuum cleaner, and the problem that the secondary fine particle brought to environment pollutes. This is because general self-cleaning system unlikely catches the granule that diameter is less. And such self-cleaning system is relatively conventional in the purifier that some are relatively large, and often using no material consumption as the prominent features of device. It should be noted that due to the fact that described beneficial effect and reduce the necessity that adopts additional self-cleaning system, but the present invention is not precluded from the practical application of native system in order to certain needs increases the probability of self-cleaning system.

As far back as nineteen eighty-three, the LawrenceLivermoreNationalLaboratory(LLNL of the U.S.) laboratory once carried out the trial that makes conductor or semiconductor fiber polarized charged under the subsidy of USDOE. They find really can improve, to fiber is charged, the effect catching granule greatly. But it is because the easy arcing of electric field and voltage of electric field can not be improved fully, and the interruption of purification and the reduction of efficiency can be caused. (LLNL, 1983) has again some scientific research personnel (US5549735) to attempt carrying out insulation processing in whole or in part to avoid arcing or to avoid electrically charged particle by too early neutralization to electrode in recent years, but particle capture efficiency will certainly be greatly reduced by this simultaneously. Although the value in this field is proceeding research to have scholar to approve, to solve the distance of theoretical and actual aspect. (Chiu-Sen, 2001) but up to now, the potential technology of such a tool because arcing or neutralize electrically charged particle cause degradation reason under efficiency, really do not obtain reality marketing application.

The present invention then solves produced problem in above-mentioned document, it provides the benefit that unfavorable phenomenons such as both avoiding electric field arcing and is likely to when abnormal operational conditions such as arcings produce harmful ozone, turn avoid and processes the efficiency decline brought to electrode insulation. When using identical voltage 12kV with above-mentioned LLNL, the experiment of this device can be stablized the long period and be run and do not produce any phenomenon of arc discharge or noise.

For this, in filter assemblies (0103), electrode is preferably made by electric conductor, adopts netted or porous conductor electrode, the shape of perforation be not limited only to square, polygon, circular variously-shaped. Due to be prone to arcing electric discharge, electrically charged particle before captured premise in and the reason such as electric discharge, there are some purifiers to adopt the method (electrode is all covered with insulant by such as US5549735) of insulation processing electrode in recent years, but so the insulation position of electrode comprehended and cause significantly declining thus reducing the efficiency of device of space electric field field intensity. So electrode is not carried out insulation processing by the present invention, but have employed preferred fibrous material and and suitable arrangement form, the experiment proved that, electrode distance, within 1-5cm scope, will not produce the adverse consequencess such as arcing electric discharge between electrode.

In Fig. 2, in the layout of the battery lead plate (0201) (0202) of fibre structure both sides, rear end, native system, preferably near air inlet one lateral electrode (0202), adopts the connection of the electromotive force occurring pole (0602) identical with Fig. 6 intermediate ion. Electrically charged particle and this pole plate have the active force of homopolarity mutual exclusion, but relatively small, and general forced ventilation device can overcome such active force completely, and does not affect the free flow of dusty gas medium.Electrically charged particle can pass through such pole plate and meets with polarized fiber (0203) and discharge captured. This is also that native system is without adopting another major reason of common electrode insulation processing method.

Additionally, the filter assemblies of the present invention (0103) has double benefit at degerming anti-virus aspect. First, certain fiber with antagonistic property is selected to be possibly realized; Secondly, native system includes two level assemblies that high voltage accesses. Catch in the region of granule particularly in filter element, the antibacterial caught, virus can be killed by the longer time of staying by high voltage electric field at room temperature environment. Electrostatic field and microelectric current antibacterial are thought in research, make the variations such as the protein of antibacterial, nucleic acid, the cell wall of damage antibacterial and cell membrane, destroy the surface texture of antibacterial, the biological electret state inside and outside cell membrane is made to be damaged, thus suppressing bacterial reproduction and killing antibacterial. The patents such as (Zeng Xinan etc., 1998) such as US6497839B1 just once had the exploration that some are useful in autoclaving, it can be verified that the principle of above sterilization. The present invention is available for based on research worker and proceeds the exploration for air dielectric sterilization aspect.

The another one of native system is characterised by, after air dielectric is purified, it is provided with perforation or mesh electrode plate (0201) (0202) and ground connection, this netted assembly not only air drag is very low, and on the one hand, these parts, as the reference-potential point of other high-field electrode, greatly strengthen the electric field intensity in filter space; On the other hand; the negative consequence brought it is likely to based on the release of electrically charged particle or ion; these parts may further ensure that the present invention will not continue release to the space beyond system and be likely to result in the ion of secondary pollution, and this is also the another one beneficial effect of the present invention. These earth conductor parts can also be considered to have and have the standalone feature being neutralized by the gas medium containing remaining charged ion concurrently.

The mode that forced ventilation assembly (0102) adopts to be forced air-flow, provide power to air-flow so that the air-flow containing pollutant passes through described filter assemblies (0103), thus suspended particulate substance captured, collection in the channel. One of the present invention provides the benefit that concrete operation principle is the granule that fibers adsorption is tiny particularly with more small granule, and promotes that fine particle thing becomes bigger granule at fiber surface coalescence, and then is better captured.

As it is shown in figure 5, the assembly of blower fan (0502) or other pressure air flowings can adopt any suitable type, and by direct current or Alternating Current Power Supply. Because the windage of native system is relatively very low, this makes to adopt some low-power consumption, quiet blower fan to be possibly realized. The such as super-silent axial flow blower of Norway PurificoEC350, this blower fan can be buied in Purifico Beijing Representative Office. The system of the present invention is not limited to specific air quantity, exerts oneself in bigger product at some, can select more powerful blower fan completely; In like manner, for some less interior spaces, it is also possible to select the blower fan that power is relatively small in size. Adopt outer cover body and miscellaneous part should combine to ensure that the air dielectric requirement according to design is effectively by specific parts with airtight form. In some preferred version, forced ventilation part can also adopt and include but not limited to centrifugal serial fan, such as following 8th embodiment.

The forced ventilation devices such as blower fan (0502) are incorporated on skeleton (0302) by a plate (0501) opening circular hole in modes such as welding or screw fastenings, the circular hole of this fixing fan assembly should with do not interfere with impeller of blower rotate be limited and little as much as possible, illustrate, if selecting the blower fan of diameter 350mm, then it is advisable with opening diameter 350mm.The natural frequency avoiding the common operating condition of blower fan that additionally natural frequency of the resonance of this steel plate should be tried one's best, in order to avoid producing resonance noise.

Such as Fig. 6, the charged assembly of native system (0101) is main be there is pole (0602) and is not limited to the Guan Bi earth conductor (0601) of annular or other shapes and constitutes by plasma. Plasma occur pole (0602) and described ring electrode (0601) can but be not limited to be made up of following material: the conductive material such as tungsten, rustless steel, copper, and through copper oxide surface spray treatment, can also by the slightly higher material of the impedances such as carbon fiber at its most advanced and sophisticated position. This part carries out charged, particularly significant for the detergent power of system fully for the particle in air dielectric when the system of entrance.

Plasma occurs pole (0602) to be have substantially most advanced and sophisticated cylindric or its diameter of section of fibre bundle conductor between 0.5-5mm, and the diameter of section of circular loop conductor (0601) is also between 0.5-5mm. Plasma occurs pole (0602) to be connected to the positive pole of adjustable electric pressure type high pressure generation power supply; Annular closed conductor pole (0601) then ground connection. This ring electrode can also at axially-extending, and in the position of extreme direction before this generation extremely less than occur pole foremost. Ring electrode (0602) adopts the mode of any of insulation to be fixed on air inlet side, and identical with the profile of air inlet.

Under suitable voltage, for instance the DC high-voltage of 5000-14000V, pole (0602) is occurred to produce plasma. Wherein cation and electronics equivalent occur. Electronics contained therein flows into the generation pole that electric potential difference is higher, and cation then flows to the direction that electric potential difference is relatively low, namely annular grounded parts (0601) and other electric relatively low positions of fuselage. When ambient pressure is close to atmospheric pressure, the plasma that native system produces belongs to hot plasma (thermalplasma), in actual hot plasma generating means, the plasma of output is spurting motion, and forms a umbrella ion air curtain coverage rate being similar to air curtain. Such ion air curtain experiments verify that can very all even airtight, and survey with hands or wax candle flare and can also experience uniform wind sense. The suspended particulate substance that air inlet side comprises all must first pass through plasma air curtain to be affected by ion and fully charged, and this provides guarantee to the detergent power of whole system. With power source extremely in exposed conductor part all can by the catalyst uniform fold containing manganese dioxide or copper oxide, this is the another one beneficial effect that the present invention is different from commercially available common similar devices corona charging method to produce harmful ozone (YuHeiLiu2005) with avoiding more thoroughly in plasma charging area.

Above-mentioned plasma occurs pole (0602) to access but is not limited to the power supply of following form: high direct voltage, DC pulse, ac high-voltage etc., its voltage swing can also adopt adjustable, it would however also be possible to employ fixed voltage formula.

Although the invention is not restricted to the way of ring electrode (0601) ground connection, but its preferably grounded way is not found in existing patent documentation, one of beneficial effect of this way, owing to above-mentioned annular earth conductor (0601) is normally close to casing, it is charged and cause personnel to have slight uncomfortable sensation of getting an electric shock that this can be prevented effectively from ionized air that the relative method of traditional corona both positive and negative polarity formed, even if health or life will not be threatened by the sensation of such slight electric shock.Additionally this position ground connection can also be improved for the security and stability of whole system. Empirical tests, the shell of native system both can adopt the insulant such as engineering plastics, it would however also be possible to employ shell prepared by the conductor materials such as metal. The possibility that native system is all widely used under various circumstances.

(the second embodiment).

In the system of the present invention, the fibrous material filled in filter assemblies (0103) can also select tradition high polymer combination materials to make, the benefit of such embodiment is can to solve current civilian depurator to change the problem that filter element cost is high, it is also possible to the problem of the secondary pollution that environment is brought by the filter element avoiding cost high replacement frequency little.

The high polymer combination materials of this quasi-tradition is beneficial in that it is commercially easily obtained, and price is low, and can suitable recycling after cleaning and regeneration.

(the 3rd embodiment).

Additionally, in filter assemblies (0103), the fibrous material of filling is not limited to material or the fibrous material that cellulose is constituted, also include being made up of fibrous material have multiple can the supplied gas finished product by physical form, as utilize the paper products made containing the paper pulp of fibrous material, by the goods of paper products machine-shaping or other utilize fiber to adopt the article etc. that weaving or non-woven form produce or the assembly being made up of above two or multiple material.

One of them preferred embodiment, the direction utilizing similar Concha Arcae or honeycomb cardboard and electric field is arranged in parallel. It is provided with loose degradable plant fibre therebetween. When windage is relatively low, will be caught through its neighbouring charged suspended particulate substance by the fiber of electric field polarization in a large number. It has the beneficial effects that multi-form fibrous material can be respectively directed to the suspended particulate substance of different-grain diameter and arrange, more practical when some pollutant kind.

In this preferred exemplary, the specification of fiber module is between 500-800g/m2. Being adjusted specification in this interval and carry out a series of experiments show that, the cooperation wind speed difference that the assembly of different size is optimum, the efficiency removing suspended particulate substance there is no great change. Certainly the invention is not limited in such specification.

(the 4th embodiment).

Such as Fig. 7 or Fig. 8, the 4th embodiment is based on the first embodiment, but and maximum most upstream or the most downstream being distinctive in that forced ventilation assembly (0102) more charged assembly (0101) is positioned at air-flow of the first embodiment. If adopting the blade of the relatively low forced ventilation assembly (0102) of dielectric constant, then can adopting present embodiment, it is less that its beneficial effect is advantageous for the size design of system. Other parts are then identical with the first embodiment.

(the 5th embodiment).

Compared with the charged assembly (0101) that present embodiment is single with the first embodiment, as it is shown in figure 9, have employed multiple charged assembly arrange and also be multiple charged assembly adopt asymmetric polarity layout. Such as arranging 2 or more than 2 opposite polarity generators, the different granule of charged polarity was through filter assemblies (0103) in the past, and a part can be met and coalescence occurs. Tiny granule, after coalescence effect, becomes the granule that particle diameter is bigger, can be easier to be captured. In addition, present embodiment other parts are identical with the first embodiment. The coalescence device of native system and the common similar device in market are different in that being generally aligned in the same plane of the multiple charged assembly of native system, and peripheral relative Guan Bi conductor one pole (0601) adopts the mode of ground connection.

(the 6th embodiment).

Carbon fiber charged assembly such as Fig. 6, plasma occurs pole (0602) and ring-type receiving pole (0601) to can be, but not limited to be made up of following material: the conductive material such as tungsten, rustless steel, copper, can also replace metal sharp shaped material by the material that the impedances such as carbon fiber are slightly higher at its most advanced and sophisticated position. In addition, present embodiment other parts are identical with the first embodiment.

(the 7th embodiment).

The mesh form of battery lead plate (0201) (0202) is not limited to the grid-shaped metallic plate in the first embodiment, it would however also be possible to employ the expanded metal of other shapes such as rounded porous plate, triangular multi-hole plate, polygon porous plate or other patterns makes. Make in addition it is also possible to the sheet material made by insulant adds metal coating such as but not limited to resin plate. It is characterized in that the support function of some strength can be conducted electricity and have in surface, and air is free to flow through substantially.

In order to increase effective filtration area further, adopt certain net, the battery lead plate of hole shape can be transformed to the endless belt type such as Figure 10, the form such as spherical, the Z-shaped such as Figure 12, the S type such as Figure 13 such as Figure 11 by plane. So effective filtration area can be multiplied by the filter assemblies (1003/1103/1203/1303) after conversion when certain volume.

(the 8th embodiment).

Being different from the first embodiment such as Figure 14 present embodiment and the 4th embodiment part is in that, when the direction of air dielectric flowing is through native system, direction changes. Preferably employ centrifugal fan (1402) and reach this purpose. In the embodiment adopting axial fan, the flow direction of gas medium entirety is in systems almost without being changed.

In the present embodiment, the casing assembly (1404) that have airflow line function that include an accommodation said modules that charged assembly (1401), forced ventilation assembly (1402), filter assemblies (1403) and gas can pass through same with the first, the 4th embodiment. In Figure 13 shown in arrow, air-flow first passes through an imaginary geometrical axis direction of charged assembly (1401) and enters, and pollutes suspended particle wherein charged. Air-flow is then passed through including but not limited to that centrifugal blower fan changes Radial Flow into.

In the present embodiment, filter assemblies (1403) must be arranged around centrifugal fan (1402) exterior annular. As shown in Figure 10, the electrode (1001) that its internal diameter is less occurs pole polarity identical with the plasma in charged assembly (1401) simultaneously; What its external diameter was bigger is positioned at electrode (1002) the then ground connection in outside. The fibrous material (1003) arranged between two electrodes is also therewith according to being circular layout. This few fibers material radially polarized, efficiently catches charged suspended particulate substance after electrode connects electricity. The part that each assembly and its structure support needs to ensure air-tightness, to ensure that air-flow only flows by the intent of the present invention.

Present embodiment provides the benefit that, it is possible to save space, and centrifugal fan changes the feature of airflow direction relatively can save space by axial flow blower.

Additionally the rotor of centrifugal fan (1402) can rotate together with the visible mode of user's sight line with filter assemblies (1403). Such being arranged in the middle of family or some working environment and have visible moving component, such moving component can point out the state of operating intuitively to user, and adds entertaining to cleaning equipment.

(other embodiments).

Native system can also be for bigger dust, suspended particle pollute beyond pollutant component accessory part is set, for instance just imitate filter screen, activated-carbon filter screen component, chemisorbed assembly etc. Such accessory part can for the reply of being customized of air dielectric of different pollution situations, and the efficiency generally also without influence on native system itself, particulate matter adsorbed is reasonable in design, without causing dramatically increasing of native system noise.

Although not further describing herein, in order to meet the requirement of international standard such as UL867, high voltage power supply device should with gang switch; when removing or open panel; gang switch action, cuts off the main circuit of native system, the safety of protection operator. If additionally outer cover body adopts metal material, then need to carry out good earth.

Additionally filter element can also arrange pressure measurement sensor, position for detecting the both sides of filter assemblies in Fig. 2 and Figure 10-13, for detecting the behaviour in service of these parts, when pressure drop exceedes certain numerical value, sending signal, prompting user changes the filter element part (0203/1003/1103/1203/1303) in filter assemblies.

Multiple electrode can be used, for instance brush or multiple single electrode or wire rod. No matter use which kind of configuration, electrode or electrode configuration and location should provide enough voltage field in outlet, to be polarized by fibrous material (0203) as expected.

As it has been described above, the form of power of the present invention can select the form of high direct voltage, DC pulse high pressure, ac high-voltage. Both can help the charged difference of fine particle below, and collision rift produces coalescence effect, improves the efficiency purified.

Above-mentioned embodiment broadly falls into some exemplary illustration embodiments of the present invention. It should be apparent that, principles of the invention can apply to purification and the filtration art of other existing all foreseeable air dielectrics, its working environment is probably the air cleaning of living environment, mobile vehicle or the purification in airborne vehicle space, the central air-conditioning of building or cleaning system, or even the purification of the indoor such as greater room such as gymnasium, the exterior space.

The present invention is not by the restriction of structure described and illustrated herein and relative size. Under different structures and size, the high voltage power supply of the present invention is not also by the restriction of voltage swing as herein described. General size is more big, and the suitable supply voltage selected is more high.

Under the premise without departing from the spirit and scope of the present invention, the present invention can take multiple amendment and change. Therefore, the present invention should not necessarily be limited by above-mentioned exemplary embodiment, but should be subject to the control of the restriction of that mention in claims below and any equivalent. The picture quoted in claims below is only a kind of help theing be best understood from claim content and should not become a kind of restriction. The present invention suitably can also be carried out when there is any element not specifically disclosed herein.

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Claims (10)

1. the purification removing suspended particulate substance in gas medium and filtration system, this system includes the pipeline holding said modules that charging particle assembly (0101), forced ventilation assembly (0102), filter assemblies (0103) and gas can pass through, it is characterized in that described filter assemblies (0103) comprises at least two electrode that electric potential difference is different, between described electrode, have non-conductor fibre-like material.

2. the purification of gas medium suspended particulate substance according to claim 1 and filtration system, it is characterized in that its fibrous material system not close arrangement forms, have space to be available for air-flow between fiber to pass through, under the effect of high-field electrode, fiber is charged and produces electric field in the space at its interval, and in fibre-bearing filter element (0203), the filling proportion of fiber is 1-15%.

3. the diameter of fiber range for 100 ��m-0.01 ��m.

4. the purification of gas medium suspended particulate substance according to claim 2 and filtration system, it is characterised in that its fibrous material is made up of degradable acid fiber.

5. the purification of gas medium suspended particulate substance according to claim 2 and filtration system, it is characterised in that its fibrous material is made up of high polymer fiber.

6. the purification of gas medium suspended particulate substance according to claim 1 and filtration system, it is characterised in that its fibrous material (0203) is the layer structure of close-packed arrays, has space to be available for air-flow and pass through between layer structure.

7. the purification of gas medium suspended particulate substance according to claim 1 and filtration system, it is characterised in that high-field electrode is without insulation processing, and gas can pass from electrode.

The purification of gas medium suspended particulate substance according to claim 1 and filtration system, it is characterised in that the plasma in its charged assembly (0101) occurs the most advanced and sophisticated position of pole (0602) to adopt the brush tip of carbon fibers.

8. the purification of gas medium suspended particulate substance according to claim 1 and filtration system, it is characterized in that in its charged assembly (0101), the polarity of electrode of the side of the polarity of plasma generation pole (0602) charged assembly (0202) close with filter assemblies (0103) is consistent, and electrode (0201) ground connection in another one filter assemblies.

9. a charging particle device, it is the device of a kind of necessity in claim 1, it is characterized in that it is by being with cuspidated plasma to occur pole (0602) and Guan Bi conductor (0601) to form, and wherein plasma occurs pole (0602) to connect high voltage power supply, and wherein closes conductor (0601) ground connection.

10. charge device according to claim 9, it is characterised in that wherein exposed conductor part processes through ozone-resistant coating.