CN104566650B - Air cleaning unit suitable for removing fine particle in air under the conditions of domestic environment - Google Patents
Air cleaning unit suitable for removing fine particle in air under the conditions of domestic environment Download PDFInfo
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- CN104566650B CN104566650B CN201410856713.8A CN201410856713A CN104566650B CN 104566650 B CN104566650 B CN 104566650B CN 201410856713 A CN201410856713 A CN 201410856713A CN 104566650 B CN104566650 B CN 104566650B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
A kind of air cleaning unit for being suitable to remove fine particle in air under the conditions of domestic environment, category electrostatic precipitation field.Including air inducing unit, air cleaning member and air duct, its air cleaning member includes the electrostatic coalescence area under the positive and negative high-voltage pulse charging area set gradually, alternating electric field, grit collecting region, plasma disinfection area and anion area；By burst pulse discharge type and negative dc high voltage discharge type, using below 30KV operating voltage and below 10mA operating current, in domestic environment, for particulate matter of the particle diameter below 10 μm, more than 90% collection efficiency is realized；Solve the problem of excessive existing Household Air Purifier " windage " and " secondary pollution ", both it may be implemented in home room size range and removed the purpose of fine particle particle in air, also air can be carried out disinfection, it is to avoid the leakage injury problem of ultraviolet radiation.
Description
Technical field
Fine particle in air is removed the invention belongs to electrostatic precipitation field, more particularly to a kind of utilization electrostatic field type
Air cleaning unit.
Background technology
Recently, because various industrial fumes discharge capacitys are too high, add automobile in society and possess quantity rapid development, cause sky
Gas pollution is growing, and the air quality of surrounding environment is reduced rapidly, and haze weather quantity increases obvious so that room air mistake
Filter, purifier application market it is growing.
As the absorption, cleaning, purifier of dirt in air in indoor or motor space, had now it is various indoor or
Vehicle-mounted air purification device is used, and various air purifiers are widely used in hotel, commercial office building, airport and waited
The Room, compartment, cabin etc. are various to need air cleaning, it is ensured that the occasion of health.
The technical scheme that most air purifiers is used in the market mainly has using electrostatic precipitation pattern
With the major class of mechanical filter pattern two, partial air clarifier also utilizes ultraviolet catalytic titanium dioxide sterilizing and purifying air.
The former, such as authorized announcement date：On August 9th, 2000, Authorization Notice No. is public in CN2391120Y utility model
" high voltage electrostatic dust precipitator of indoor apparatus of air conditioner " opened, its rack slot at the base framework two ends equipped with HV generator
In, activity is embedded with dust gratings.Provided with some parallel electrion polar curves, dust panel and low pressure frame in the gratings
Electrode, three respectively with the electrode plate with high voltage on the framework, ground connection terminal and low-field electrode activity connect, constitute convenient disassembly
, be conducive to dust, the dust arrester of maintenance clean.
The latter, such as publication date are on November 13rd, 2013, in Publication No. CN103388868A application for a patent for invention
Disclosed " air interchanger and the air-conditioner including the air interchanger ", its air interchanger includes：Housing, with shell chamber inner joint
With shell chamber external tapping；And filter cartridge, enclosure interior is fixedly installed on, filter cartridge has filter chamber air inlet and filter chamber
Air outlet, filter chamber air inlet is provided with HEPA screen packs.Using the air interchanger of the technical scheme and including ventilation dress
The air-conditioner put, it is main to utilize filter screen filtration fine particle, HEPA mistakes are set by the filter chamber air inlet in filter cartridge
Filter screen, makes the impurity particle in air be stopped by HEPA screen packs, it is ensured that to indoor input be filter out it is harmful
Particle fresh air, make room air health pure and fresh.
But, the former technical scheme can only remove dust granules larger in air, and it is micro- to be less than 10 for particle diameter
Rice Nanoparticle due to exist " passing through window " (due to molecule be difficult to it is charged, and capture electrostatic force it is weak) so that
It does not have removal effect substantially for the particulate matter that diameter is less than 10 microns, and arresting efficiency is greatly lowered.
And the side effect that the latter is brought using filter method be screen pack filtration resistance it is larger, filter run one section when
Between after, the resistance of air cleaner will reach its whole resistance, be at this moment accomplished by change filter core, otherwise its filter function just
It can decline, not reach and answer role, or even can influence the normal operation of system, so that it is higher to result in its use cost,
The problem of there is " secondary pollution " during use；On the other hand, to be reached using filter can filter in air carefully
The degree of microparticle, the air drag (" windage " that is commonly called as) of its filter screen can reach very huge degree so that whole mistake
The filtration efficiency for filtering device is very low, and its energy resource consumption is very high, it is impossible to form practical, economic domestic air
Cleaning products.
In addition, using ultraviolet as sterilization means more than existing air cleaning unit, and ultraviolet light is once revealed, then it is right
There is injury in human eye and skin.
Fine particle is also known as particulate or fine grained, refers to that aerodynamics equivalent diameter is less than or equal to 2.5 in surrounding air
The particulate matter of micron, also referred to as PM2.5, lung particulate matter.
2 months 2013, PM2.5 Chinese was named as fine particle by national scientific and technical terminology validation board.
The chemical composition of fine particle mainly includes machine carbon (OC), elemental carbon (EC), nitrate, sulfate, ammonium salt, sodium
Salt (Na+) etc..
Compared with the air particle of greater particle size, PM2.5 particle diameters are small, rich in substantial amounts of poisonous and harmful substances, and in sky
Residence time in gas is long, and fed distance is remote, thus the influence to health and atmosphere quality is bigger.
Day for announcing authorized announcement date is on November 14th, 2012, and Authorization Notice No. is special for CN102179305B Chinese invention
In profit, " a kind of electric dust collector " is disclosed, and it includes：At least include thin in multistage rotary dust collector, its described multistage rotary dust collector
Grain deduster, the fine grained deduster includes：Multiple pole plates；And multiple woven wires between the two neighboring pole plate
With multiple high pressure polar curves, the multiple woven wire and multiple high pressure polar curves are alternately distributed according to predetermined space.The technical scheme
The charged probability of particulate can be strengthened by corona wind and friction, and the acceleration and deceleration effect of utilization corona wind and particle are in fine and closely woven net
The Brownian movement enhancing inertia capture of compartment, less grid gap can also make electrostatic force catch reinforcement.Therefore the technical scheme
Removal efficiency of the electric dust collector to pellet especially micro/nano level particulate matter is greatly improved under a variety of effects.
Publication date is August in 2012 15, in Publication No. CN 102631989A application for a patent for invention, discloses " one
Plant electric mote remover ", it includes the coalescence area, guiding region and membrane type electrostatic precipitation area being sequentially communicated, coalescence area and conventional electricity
Dust pelletizing system is turned on, and is provided with equally spaced multiple dust collection plates, forms the multiple micronic dust passages consistent with micronic dust direction, same
The polarity of discharge electrode in micronic dust direction and polarity identical discharge electrode, adjacent micronic dust passage is provided perpendicular in micronic dust passage
On the contrary, making by electric charge different on the micronic dust band in the area；Guiding region is connected with coalescence area, is provided with multiple perpendicular to micronic dust side
To deflector, the side of deflector is towards micronic dust direction so that the micronic dust with different electric charges is in area's coalescence；Membrane type electrostatic is removed
Dirt area is connected with guiding region, is provided with multiple equally spaced films that gather dust, and is formed the multiple charged micronic dusts consistent with micronic dust direction and is led to
Multiple cathodic discharge poles are provided with road, each charged micronic dust passage, make the charged micronic dust after coalescence in the area by the film that gathers dust
Catch.
Although above-mentioned two technical scheme proposes " removal " for pellet, especially micro/nano level particulate matter
Problem, and corresponding solution is given, but it is the dust removal problem being directed in commercial process, what is stressed is
Processing and removal to contained dust (i.e. usually said high resistivity dust) in flue gas discharged in industrial processes.Reason
By upper, dust particle needs 2~4 second time to being moved to collecting plate from charged, if wind speed is 1 meter per second, dust board channel is long
Degree needs 2~4 meters, when such as wind speed is 2 meter per second, and collecting plate passage length needs 4~8 meters, therefore in order to obtain preferable dedusting effect
Really, the space-consuming that its device needs is larger (for the size range of household electrical appliance or home room), it is impossible to be applicable
In indoor air purification field.
Domestic environment is the artificial subenvironment of family's reunion, rest, study and housework.
How so that in domestic environment, can also use electrostatic precipitator technology, the PM2.5 in interior space air is entered
Row remove, be existing domestic air conditioning or air cleaning unit design in it is anxious to be resolved the problem of.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of be suitable under the conditions of domestic environment thin in removing air
The air cleaning unit of grain thing, a variety of dedusting patterns such as corona discharge, low temperature plasma are complex as a whole by it, for
PM2.5≤500μg/m3, the μ g/m of PM10≤6003Domestic environment, discharged shape using burst pulse discharge type and negative dc high voltage
Formula, by below 30KV operating voltage and below 10mA operating current, for particulate matter of the particle diameter below 10 μm, is realized
More than 90% collection efficiency；The problem of excessive existing Household Air Purifier " windage " and " secondary pollution " is which solved, both
It may be implemented in home room size range and remove the purpose of PM2.5 particles in air, air can also be carried out disinfection, it is to avoid
The leakage injury problem of ultraviolet radiation.
The technical scheme is that：A kind of sky for being suitable to remove fine particle in air under the conditions of domestic environment is provided
Air purifying apparatus, including air inducing unit, air cleaning member and air duct, described air inducing unit draw pending air
Enter air duct, by air cleaning member purified treatment heel row to interior, provided for the space of indoor closing by purifying, disappearing
The clean air of poison, it is characterized in that：
Described air cleaning member includes the electrostatic under the positive and negative high-voltage pulse charging area set gradually, alternating electric field
Coalescence area, grit collecting region, plasma disinfection area and anion area；
Wherein, in described positive and negative high-voltage pulse charging area, set the first to the 3rd grounded plate electrode, described first to
The longitudinal axes parallel of 3rd grounded plate electrode, position side by side, described air duct is divided into the positive high voltage pulse of parallel arranged
Charging area and negative high voltage pulse charging area, between first, second grounded plate electrode between second, third grounded plate electrode,
Positive and negative line corona discharge electrode is set respectively；
Electrostatic coalescence area under described alternating electric field, sets longitudinal axes parallel, position the four, the 5th ground connection arranged side by side
Plate electrode, between the four, the 5th described grounded plate electrodes, sets the 3rd line corona discharge electrode；
In described grit collecting region, longitudinal axes parallel, position the six, the 7th grounded plate electrodes arranged side by side, in institute are set
Between the six, the 7th grounded plate electrodes stated, the 4th line corona discharge electrode is set；
In described plasma disinfection area, using longitudinal axes parallel, side by side, pattern in pairs sets array for position
Grounding electrode plate group, on the opposite face of described two grounding electrode plates, covering is provided with the insulation board that thickness is less than 5mm；Institute
10 μm of the surface roughness Ra ＜ of insulation board is stated, its planar dimension is more than the planar dimension of the ground connection pole plate；Connect in each two
Between ground electrode plate, the 5th line corona discharge electrode is set respectively；
In described anion area, a conductive carbon fibre net is set as electrode, described conductive carbon fibre net with it is described
The flow direction of pending gas is perpendicular to be set, and along air-flow direction, is being close to the rear of the conductive carbon fibre net, is being put
Put at least one set of ceramic electrical heating tube；
Described air cleaning unit, by using said structure, thin in realizing under the conditions of domestic environment to air
The removal of grain thing and the purification to air, sterilization.
Specifically, described air cleaning unit, sucks described air by blower unit by air to be clean and leads to
Wind speed in road, air duct is less than 0.8m/s；
In described positive and negative high-voltage pulse charging area, air to be clean is divided into two strands, parallel arranged is introduced into respectively
Positive and negative alternate particulate charging area, the particulate in two strands of air is carried positive and negative electric charge respectively, form Charge particle, its
Space ion concentration is more than 107/cm3；When two stocks do not carry positive charge, the Charge particle of negative electrical charge enters described friendship
During electrostatic coalescence area under changed electric field, two strands of air are merged into one, in the effect of ac high-voltage or pulse ac high-voltage field
Under, the described mutual motion collision of positive and negative Charge particle, cohesion is the larger particles that particle diameter is 10 μm~90 μm；Now, air
Middle 10 μm of particle diameter ＜ fine particle can continue coalescence, increase with the bulky grain of above-mentioned coalescence again so that 10 μm of particle diameter ＜'s
Fine solid particle is easier to by supplementary set or trapping.
When the micronic dust for the larger particles that cohesion is 10 μm~90 μm of particle diameter is by described grit collecting region, in negative direct current
In the presence of high-voltage field, it is collected on ground connection collecting plate, realizes the purification of particulates；
In described plasma disinfection area, high energy particle, active particle produced by the area will kill bacterium, virus simultaneously
Resolving harmful gas, makes air to be clean be sterilized purification；
In described anion area, the negative oxygen ion beneficial to human body is produced, ozone, oxynitrides can be controlled to produce again
Amount, makes it be far below safety standard value；
By above-mentioned steps, described air cleaning unit realize under the conditions of domestic environment to air in fine particle
Remove and the purification to air, sterilization.
Further, in described positive high voltage pulse charging area and negative high voltage pulse charging area, to described positive and negative wire
Corona discharge pole applies the positive and negative HVDC square-wave pulse that output waveform is narrow square wave respectively, to ensure, in charged space, to put
Electricity, which enters, forms stable constant electric field in line period, air molecule is obtained enough, consistent, stable ionization energy, quick steady
Fixed ionization, makes fine particle efficient, rapid charged, it is to avoid the waste of power supply energy, it is ensured that high-voltage operation safety, avoids simultaneously
Line electrode produces the danger of spark discharge to ground electrode.
Wherein, in described positive and negative high-voltage pulse charging area, described positive and negative line corona discharge electrode is applied respectively
Output waveform is the positive and negative high voltage narrow pulse power supply of narrow square wave, and the width of its burst pulse is 0.1ms~1ms；It is described just,
The magnitude of voltage of negative high voltage direct current square-wave pulse is 3KV~50KV, to adapt to different line electrode-ground connection pole plate spacing；It is described
The pulse current of positive and negative HVDC square-wave pulse is 0.1~10mA, be adapted to the diameter equivalent of different spaces concentration≤
2.5 μm of subparticle is charged.
Electrostatic coalescence area under described alternating electric field, ac high-voltage is applied to the 3rd described line corona discharge electrode
Power supply or pulse ac high voltage power supply, the magnitude of voltage of ac high voltage source or the pulse ac high voltage power supply is 3KV~50KV,
Frequency is 1Hz~1MHz, and electric current is 0.1~10mA.
In described grit collecting region, apply negative dc high voltage power supply to the 4th described line corona discharge electrode, it is described
The magnitude of voltage of negative dc high voltage power supply is 3000~-30KV, and current value is 0.1~10mA.
In described plasma disinfection area, high-voltage ac power or arteries and veins are applied to the 5th described line corona discharge electrode
AC power is rushed, the magnitude of voltage of its high-voltage ac power or pulse ac power supply is 3KV~50KV, frequency is 50~
500KHz, described high-voltage alternating or pulse ac can produce 10 in its discharge space7/cm3Negative ions above；It is described exhausted
10 μm of the surface roughness Ra ＜ of listrium.
In described anion area, apply negative direct current sub-high pressure to described conductive carbon fibre net or negative DC pulse is high
Pressure, the negative direct current sub-high pressure or negative DC pulse high pressure, its voltage range are less than 3000V, and electric current is less than 1mA；Anion is produced
Raw amount is per second to be more than 107。
The heating and temperature control scope of the ceramic electrical heating tube is 60~300 DEG C.
Further, in described positive high voltage pulse charging area and negative high voltage pulse charging area, arteries and veins is narrowed using positive and negative height
Rush and the dust granules in air are carried out charged, it is charged to belong to bipolarity alternating-current pulse, can realize " different in nature lotus in the same area
Electricity "；
Electrostatic coalescence area under described alternating electric field, is threaded shape line electrode, solidifying using bipolarity alternating-current pulse
And, the voltage applied is ac high voltage source or pulse ac high voltage power supply, in the ac high voltage source or pulse ac
In the high voltage power supply respective positive and negative action period, its magnitude of voltage keeps constant, and then makes space electric field constant, to charged
Fine particle provides uniform electric field power, it is ensured that it obtains enough momentum, and the positive and negative particulate for belonging to charged is being exchanged
Simultaneously, its resistance is small for coagulation under impulse electric field, and coalescence efficiency high not only adds the carrying capacity of particulate, and can make carrying
The little particulate coalescence of the charges of different polarity is bulky grain；
Negative dc high voltage power supply is applied to spiral type electrode in described grit collecting region, in favor of the bulky grain condensed
It is charged to collect；
In described plasma slab using the smooth insulation board in surface, bacterium is nowhere hidden, be more beneficial for raising and go out
Bacterium effect.
It is formed by conductive carbon fibre braiding for conductive carbon fibre net described in it, and the fibre diameter of its conductive carbon fibre≤
0.15mm。
Positive and negative line corona discharge electrode described in it, the 3rd to the 5th line corona discharge electrode are screw thread shape line electrode,
To reduce corona galvanic corrosion of the high-voltage corona to discharge electrode center, prevent that corona wire is broken by high-voltage corona ablation, it is to avoid electric discharge exists
Vacillating on line electrode, increases the uniformity and stability of electric discharge.
Diameter≤2.5mm centered on the parameter size of its screw thread shape line electrode, thread taper is 6~18 °, between screw thread
Away from for 1~5mm.
Air cleaning unit described in technical solution of the present invention, for pending air, passes through positive/negative high-voltage pulse lotus
Electricity, the electrostatic coalescence under alternating electric field, the grit under negative dc high voltage electric field are collected, low temperature plasma gas is sterilized and increased
Anion, the removal and purification to air, sterilization of fine particle in realizing under the conditions of domestic environment to air, raising is gathered dust
Efficiency, it is to avoid ultraviolet radiation is injured, reduces the power consumption of air cleaning unit.
Air cleaning unit described in technical solution of the present invention, for the μ g/m of PM2.5≤5003, the μ g/m of PM10≤6003's
Domestic environment, using burst pulse discharge type and negative dc high voltage discharge type, passes through below 30KV operating voltage and 10mA
Following operating current, for particulate matter of the particle diameter below 10 μm, realizes more than 90% collection efficiency；Meanwhile, pottery is set
Porcelain electrothermal tube is used to eliminate ozone, and the ozone concentration produced by it can reach below 0.05ppm, far below national safety standard
Value.
Compared with the prior art, it is an advantage of the invention that：
1st, in positive high voltage pulse charging area and negative high voltage pulse charging area, positive and negative high voltage narrow pulse is respectively adopted to air
In dust granules carry out charged, it is charged to belong to bipolarity alternating-current pulse, can realize that the opposite sex is charged in the same area, not only increase
The carrying capacity of particulate, and the little particulate coalescences of the carrying charges of different polarity can be made to be bulky grain, on the one hand it may insure in lotus
Electric space, discharges and stable constant electric field is formed into line period, air molecule is obtained enough, consistent, stable ionization
Can, the ionization of fast and stable makes fine particle efficiently rapid charged；Two can avoid the waste of power supply energy；Three can ensure that high pressure
Operation safety, it is to avoid line electrode produces the danger of spark discharge to ground electrode；
2nd, electrostatic is carried out to charged particle using ac high voltage source or pulse ac high voltage power supply in coalescence area
Coalescence, uses coagulation of the positive and negative particulate under alternating-current pulse electric field simultaneously, its resistance is small, coalescence efficiency high, beneficial to making lotus
Mutually collision cohesion is bulky grain to the little particle of electricity under the effect of this alternating electric field power；
3rd, negative dc high voltage power supply is applied to spiral type electrode in grit collecting region, is conducive to the bulky grain condensed charged
Collect；
4th, bacterium is nowhere hidden using the smooth insulation board in surface in plasma slab, be more beneficial for improving sterilizing effect
Really；
5th, corona discharge and lower temperature plasma technology are applied to air purifier, to solve existing air purifier wind
The problem of hindering excessive, secondary pollution, ultraviolet radiation；
6th, compared with prior art, the technical program does not set screen pack, and windage is very low, and power consumption is few, non-secondary pollution, no purple
Outer ray radiation injury, dust-collecting efficiency is high, and sterilizing efficiency is high.
Brief description of the drawings
Fig. 1 is the structural representation of air cleaning member of the present invention；
Fig. 2 is the structural representation of positive and negative high-voltage pulse charging area of the invention；
Fig. 3 is the structural representation in the electrostatic coalescence area under alternating electric field of the present invention；
Fig. 4 is the structural representation of grit collecting region of the present invention；
Fig. 5 is the structural representation in plasma disinfection area of the present invention；
Fig. 6 is the structural representation in anion area of the present invention；
Fig. 7 is the structural representation of conducting fibrous web of the present invention；
Fig. 8 is the vertical structure schematic diagram of screw thread shape line electrode；
Fig. 9 is the radial structure schematic diagram of screw thread shape line electrode；
Figure 10 is the structure enlarged diagram of part A in Fig. 8；
Figure 11 is the block diagram of air cleaning unit dedusting operation principle of the present invention.
A is positive and negative high-voltage pulse charging area in figure, and B is the electrostatic coalescence area under alternating electric field, and C is grit collecting region, D
For plasma disinfection area, E is anion area；1-1 is the first grounded plate electrode, and 1-2 is the second grounded plate electrode, and 1-3 is the
Three grounded plate electrodes, 1-4 is the 4th grounded plate electrode, and 1-5 is the 5th grounded plate electrode, and 1-6 is the 6th grounded plate electrode, 1-7
For the 7th grounded plate electrode, 1-8,1-9 are plasma disinfection area grounded plate electrode, and 2-1 is positive wire corona discharge pole, 2-2
For negative wire shape corona discharge pole, 2-3 is the 3rd line corona discharge electrode, and 2-4 is the 4th line corona discharge electrode, and 2-5 is the 5th
Line corona discharge electrode, 3-1,3-2 are insulation board, and 4 be conductive carbon fibre net, and 5 be ceramic electrical heating tube, and d is screw thread shape line electrode
Central diameter, α be screw thread shape line electrode screw thread point degree.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
In Fig. 1, technical scheme, which is provided, provides a kind of thin in air suitable for being removed under the conditions of domestic environment
The air cleaning unit of particulate matter, including air inducing unit, air cleaning member and air duct, described air inducing unit will be waited to locate
The air into air passage of reason, by air cleaning member purified treatment heel row to interior, the space for indoor closing is provided
By the clean air of purification, sterilization, its inventive point is：
Air cleaning member described in it includes quiet under the positive and negative high-voltage pulse charging area A set gradually, alternating electric field
Coagulation and area B, grit collecting region C, plasma disinfection area D and anion area E；
Described air cleaning unit, by using said structure, thin in realizing under the conditions of domestic environment to air
The removal of grain thing and the purification to air, sterilization.
In real work, first, by the drive or driving of air inducing unit/air-introduced machine, make carrying dust particale, carefully
The air of bacterium, virus and pernicious gas enters the positive and negative alternate particulate charging area of parallel arranged, particulate is carried respectively
Positive and negative electric charge；The charged corona of screw thread shape wire in this charging area occurs pole and applies positive and negative direct current burst pulse high pressure respectively, non-
It should not so make particulate charged.
When the Charge particle for carrying positive and negative electric charge respectively enters electrostatic coalescence area, handed in ac high-voltage or pulse
Flow under high pressure field action, Charge particle condenses mutual motion collision for larger particle, and accumulation area electric field is to it beneficial to after
Collect.
The micronic dust for larger particles is condensed by accumulation area, in the presence of negative dc high voltage, is easy to occur particle
It is charged, and then be collected on ground connection collecting plate, realize the purification of particulates.
It is cut in the air of particulate and also contains substantial amounts of bacterium, virus and pernicious gas, not by above-mentioned zone institute
Dispose completely；When it enters plasma slab, high energy particle, active particle produced by the area will kill bacterium, disease
Poison and resolving harmful gas, make air be sterilized purification.What area's screw thread shape line corona discharge electrode was applied is that exchange is high
Pressure or pulse ac high pressure (50~500KHz of frequency), with applying single positive or negative high pressure phase ratio, being more convenient for, it is a wide range of to produce
Low temperature plasma；In addition, area's grounding electrode plate inner surface is covered with the smooth insulating barrier in surface, it is stable in favor of being formed
Plasma discharge, can also be conducive to improve sterilization effect.
Last anion area is used to produce negative oxygen ion, the negative direct current sub-high pressure promoted health or negative DC pulse
High pressure negative oxygen ion produces area, and electrode used therein is conductive carbon fibre net.
Because added negative dc voltage is relatively low or using negative DC pulse high pressure, discharge energy is relatively low；And conductive carbon fibre
Net is easily formed corona discharge again；In addition, will also promote conduction in the rear placing ceramic electrothermal tube for being close to conductive carbon fibre net
Ozone produced by carbon fibre web electrode is voluntarily decomposed, so can produce has suitable negative oxygen ion to human body, and can be controlled smelly
Oxygen, oxynitrides yield, make it be far below safety standard value.
In Fig. 2, in described positive and negative high-voltage pulse charging area, first to the 3rd grounded plate electrode 1-1,1-2 and 1- is set
3, described air duct side by side, is divided into parallel arranged by the longitudinal axes parallel of the described first to the 3rd grounded plate electrode, position
Positive high voltage pulse charging area and negative high voltage pulse charging area, between first, second grounded plate electrode and second, third be grounded
Between plate electrode, positive and negative line corona discharge electrode 2-1,2-2 are set respectively；Described positive and negative line corona discharge electrode is distinguished
Apply the positive and negative high voltage narrow pulse power supply that output waveform is narrow square wave, the magnitude of voltage of its positive and negative high voltage narrow pulse is 3KV
~50KV, the width of the burst pulse is 0.1ms~1ms.
In Fig. 3, the electrostatic coalescence area under described alternating electric field sets longitudinal axes parallel, position it is arranged side by side the 4th, the
Five grounded plate electrodes 1-4,1-5, between the four, the 5th described grounded plate electrodes, set the 3rd line corona discharge electrode 2-
3；Ac high voltage source or pulse ac high voltage power supply, the AC high voltage are applied to the 3rd described line corona discharge electrode
The magnitude of voltage of source or pulse ac high voltage power supply is 3KV~50KV, and frequency is 1Hz~1MHz.
In Fig. 4, in described grit collecting region, longitudinal axes parallel, position the six, the 7th grounded plate electrodes arranged side by side are set
1-6,1-7, between the six, the 7th described grounded plate electrodes, set the 4th line corona discharge electrode 2-4；To described
Four line corona discharge electrodes apply negative dc high voltage power supply, and the magnitude of voltage of the negative dc high voltage power supply is 0~-30KV, electric current
It is worth for 0~10mA.
In Fig. 5, in described plasma disinfection area, using longitudinal axes parallel, side by side, pattern in pairs is set for position
Array grounding electrode plate group is put, on the opposite face of described two grounding electrode plates 1-8,1-9, covering is provided with thickness and is less than
5mm insulation board 3-1,3-2；The surface of the insulation board is smooth, and its planar dimension is more than the planar dimension of the ground connection pole plate；
Between each two grounding electrode plate, the 5th line corona discharge electrode is set respectively；To the 5th described line corona discharge electrode
Apply high-voltage ac power or pulse ac power supply, the frequency of high-voltage ac power or the pulse ac power supply for 50~
500KHz。
In Fig. 6, in described anion area, a conductive carbon fibre net 4 is set to be used as electrode, described conductive carbon fibre net
With the perpendicular setting of gas flow direction of the pending air, it is being close to the rear of the conductive carbon fibre net, is placing extremely
Few one group of ceramic electrical heating tube 5；Apply negative direct current sub-high pressure or negative DC pulse high pressure to described conductive carbon fibre net, it is described negative
Direct current sub-high pressure or the electric current of DC pulse high pressure are less than 1mA；The heating and temperature control scope of the ceramic electrical heating tube be 60~
300℃。
In Fig. 7, the network structure of conductive carbon fibre net is given, it is formed by conductive carbon fibre braiding, its conductive carbon fibres
The parameter of dimension is：Fibre diameter≤0.15mm.
In Fig. 8, Fig. 9 and Figure 10, described positive and negative line corona discharge electrode, the 3rd to the 5th line corona discharge electrode are equal
For screw thread shape line electrode, to reduce corona galvanic corrosion of the high-voltage corona to discharge electrode center, prevent corona wire by high-voltage corona ablation
Fracture, it is to avoid vacillating on On-line Discharge electrode, increases the uniformity and stability of electric discharge.
Diameter≤2.5mm centered on the parameter size of the screw thread shape line electrode, thread taper is 6~18 °, flight pitch
For 1~5mm.
In Figure 11, the dedusting operation principle square frame of the air cleaning member of air cleaning unit in the technology of the present invention is given
Figure, wherein, described air cleaning member using following mode of operations come under the conditions of present domestic environment to fine grained in air
The removal of thing, while realizing the purification to air, sterilization：
1) wind for sucking air to be clean in described air duct, air duct by blower unit/air-introduced machine
Speed is less than 0.8m/s；
2) in described positive and negative high-voltage pulse charging area, air to be clean is divided into two strands, parallel row is introduced into respectively
The positive and negative alternate particulate charging area of row, makes the particulate in two strands of air carry positive and negative electric charge respectively, forms Charge particle,
Its space ion concentration is more than 107/cm3；
3) when the electrostatic that two stocks do not carry positive charge, the Charge particle of negative electrical charge is entered under described alternating electric field
During coalescence area, two strands of air are merged into one, and in the presence of ac high-voltage or pulse ac high-voltage field, described is positive and negative
The mutual motion collision of Charge particle, cohesion is the larger particles that particle diameter is 10 μm~90 μm；Now, 10 μm of particle diameter ＜ in air
Fine particle can continue coalescence, increase with the bulky grain of above-mentioned coalescence again so that the fine solid particle that 10 μm of particle diameter ＜ is easier to
By supplementary set or trapping.
4) when the micronic dust for the larger particles that cohesion is 10 μm -90 μm of particle diameter is by described grit collecting region, negative straight
Flow in the presence of high-voltage field, be collected on ground connection collecting plate, realize the purification of particulates；
5) in described plasma disinfection area, high energy particle, active particle produced by the area will kill bacterium, virus
And resolving harmful gas, air to be clean is sterilized purification；
6) in described anion area, the negative oxygen ion beneficial to human body is produced, ozone, oxynitrides production can be controlled again
Raw amount, makes it be far below safety standard value；
7) by above-mentioned steps and method, realize under the conditions of domestic environment to air in fine particle removal, simultaneously
Realize the purification to air, sterilize.
Further, the structure and operation principle of the workspace of each in technical solution of the present invention are described below：
A, charging area：It is divided into positive high voltage pulse charging area and negative high voltage pulse charging area, uses output waveform for narrow square wave
Positive and negative high voltage narrow pulse power supply, pulse width can be narrow to 0.1ms -1ms, so narrow HVDC square-wave pulse, and one can
Ensure in charged space, discharge and stable constant electric field is formed into line period, obtain air molecule enough, consistent, steady
Fixed ionization energy, the ionization of fast and stable makes fine particle efficiently rapid charged；Two can avoid the waste of power supply energy；Three can
Ensure high-voltage operation safety, it is to avoid line electrode produces the danger of spark discharge to ground electrode；
The magnitude of voltage of the positive and negative pulse is adjustable, is 3KV -50KV, to adapt between different line electrode-ground connection pole plates
Away from；
The positive and negative pulse current is adjustable, is 0-10mA, be adapted to different spaces concentration subparticle (diameter work as
≤ 2.5 μm of amount) it is charged.
B, electrostatic coalescence area：Using ac high voltage source or pulse ac high voltage power supply, magnitude of voltage is adjustable, be 3KV-
50KV；Frequency is 1Hz -1MHz；Current adjustment, is 0-10mA；
Wherein pulse ac power supply is more excellent, and positive and negative high direct voltage is alternately acted on wire discharge electrode by it, and it is output as
Positive and negative alternate square-wave voltage, within its respective positive and negative action period, its magnitude of voltage keeps constant, and then makes space electric field
It is constant, uniform electric field power is provided to charged fine particle, it is ensured that it obtains enough momentum, beneficial to making lotus
Mutually collision cohesion is bulky grain to the little particle of electricity under the effect of this alternating electric field power.
C, grit collecting region：Using negative dc high voltage power supply, magnitude of voltage is adjustable, is 0~-30KV；Current value is adjustable, is
0-10mA, is collected beneficial to the bulky grain condensed is charged.
D, plasma slab：For sterile zones, bacteria removal, virus, pernicious gas；Handed over using high-voltage ac power or pulse
Flow power supply, 50~500KHz of frequency；Area's grounding electrode plate inner surface connects covered with smooth the exceeding in the surface that thickness is less than 5mm
The insulation board of ground plate dimensions, in favor of forming stable plasma discharge, while smooth insulating surface makes bacterium nowhere
Hide, be more beneficial for improving sterilization effect.
E, anion area：Anion produces area, and electrode is made using conductive carbon fibre net, applies negative direct current sub-high pressure or negative straight
High voltage pulse is flowed, electric current is less than 1mA, beneficial to releasing negative oxygen ion；In addition, being close to the rear placing ceramic of conductive carbon fibre net
Electrothermal tube, heating-up temperature is voluntarily decomposed to 60-300 DEG C for the ozone produced by promoting conductive carbon fibre net electrode, without
Produce excessive ozone molecule and nitrogen oxides.
Above-mentioned A to F areas wire discharge electrode use screw thread shape line electrode, because its discharge energy acts on threaded tip
On, so as to substantially reduce corona galvanic corrosion of the high-voltage corona to discharge electrode center, prevent that corona wire (electrode) from being burnt by high-voltage corona
Eating off is split；Simultaneously as the radius of curvature of threaded tip is much smaller than discharge electrode center, electric discharge will be stabilized on threaded tip, keep away
Exempt from vacillating on On-line Discharge electrode, therefore the presence of thread-like structure also adds the uniformity and stability of electric discharge.
In addition, in technical solution of the present invention, output waveform acts on screw thread for the positive and negative high voltage narrow pulse power supply of narrow square wave
On molded line shape corona wire (electrode), the momentum that this high-strength transient state ionized field can produce explosion type to air molecule impacts, its electricity
The positive and negative ion separated out has very high kinetic energy, is small molecular ion；This small molecular ion can be quickly (ns grades) and thin
Particulate realizes that saturation is charged, and ionization energy, dynamic loss of energy are caused without rolling into a ball collision friction with big air molecule；It is this
The charged positive and negative Charge particle of saturation, due to it is charged fully, its electric field migration velocity has obtained very big improvement, reduces gas
Flow the adverse effect produced to it；Due to be saturation, the opposite sex it is charged, positive and negative Charge particle inherently has stronger phase
The active force of inter coagulation, and they are placed in the pulse ac high-tension electricity of ac high voltage source or output waveform for narrow square wave
In the presence of source, then the chance of motion collision each other is more increased, so as to realize most quick cohesion.
Compared with prior art, there is following difference in the technical program：
1st, in the prior art, guiding region is set up, deflector is set in guiding region, to reach " coalescence " effect,
Its deflector role utilizes " turbulent flow " to carry charged particle disorderly to motion, made to increase " turbulent flow " motion of powered dust
The particle " coalescence " of different electric charges is carried, the technical scheme does not apply any voltage to deflector, is not belonging to " coagulation is simultaneously ", in fact
Matter is " turbulent flow coalescence ", and its resistance is big, and " coalescence " efficiency is low；And in the inventive solutions, used to be charged
" coagulation simultaneously " of the positive and negative particulate under alternating-current pulse electric field, its resistance is small, " coalescence " efficiency high；
2nd, in technical solution of the present invention, in positive high voltage pulse charging area and negative high voltage pulse charging area, using positive and negative high pressure
Burst pulse carries out " charged " to the dust granules in air, belongs to " bipolarity " alternating-current pulse " charged ", can be real in the same area
Existing " opposite sex is charged ", not only adds the carrying capacity of particulate, and can make the little particulate coalescence of the carrying charges of different polarity for big
Grain, on the one hand may insure in charged space, discharges and stable constant electric field is formed into line period, obtain air molecule
Enough, ionization energy unanimously, stable, the ionization of fast and stable, make fine particle efficiently rapid " charged "；Two can avoid power supply energy
The waste of amount；Three can ensure that high-voltage operation safety, it is to avoid line electrode produces the danger of spark discharge to ground electrode.
3rd, in coalescence area, the technical program uses " bipolarity " alternating-current pulse coalescence, can be realized in the same area different
Property it is charged, not only add the carrying capacity of particulate, and the little particulate coalescences of the carrying charges of different polarity can be made to be bulky grain；And show
Having has use " unipolarity " DC pulse coalescence in technology, and such a unipolarity DC pulse coalescence is to the particulate of same particle diameter
" coalescence " effect is minimum, its essence is the carrying capacity that merely add particulate, and little particulate " cohesion " can not be made to be bulky grain.
4th, the discharge electrode shape and added voltage characteristic used in coalescence area is distinct, there is use in the prior art
Unipolarity DC pulse carries out coalescence, but the coalescence of such a unipolarity DC pulse acts on pole to the particulate coalescence of same particle diameter
It is small, its essence is the carrying capacity that merely add particulate, and do not make little particulate cohesion be bulky grain；The technical program uses spiral shell
Line shape line electrode, the voltage applied is ac high voltage source or pulse ac high voltage power supply, in its respective positive and negative effect week
In phase, its magnitude of voltage keeps constant, and then makes space electric field constant, and uniform electric field is provided to charged fine particle
Power, it is ensured that it obtains enough momentum, beneficial to make charged little particle under the effect of this alternating electric field power mutually collision,
Condense for bulky grain.
5th, the pulse voltage waveform that the technical program is applied is square wave, does not contain miscellaneous pulse, is conducive to Electric Field Characteristics
It is stable, beneficial to " charged " and " coalescence " of fine solid particle.
6th, the various methods for removing fine particle in air are all based on industrializing large-scale production process in the prior art
The dedusting and purification of middle discharged flue gas, in order to obtain preferable dust removing effects, the space-consuming that its device needs is larger, has no
Have in domestic environment or under the conditions of, also can use electrostatic precipitator technology, the fine particle in interior space air is entered
The report that row is removed.
In addition, between air cleaning unit in existing industrial electrostatic precipitator and the technical program, also having as follows
Difference：
A, existing electrostatic precipitator are mainly used in industrial processes, because its fume amount to be processed it is larger (100-
1200g/m3), therefore need its structural volume also larger, to adapt to its processing to larger fume amount, otherwise it is easily caused dedusting effect
Rate is not high；And it is contained fume amount very little (the μ g/m of PM2.5≤500 that the air cleaning unit in the technical program, which is faced,3,
PM10≤600μg/m3) domestic environment, therefore do not need significant volume, the contour size of the unit(s) below meter level can be accomplished.
B, the operating voltage of existing industrial production electrostatic precipitator are mostly in 60-75kV or even more than 100kV, work
Electric current is mostly in 450-800mA, so high operating voltage, operating current, no matter for security or energy saving, all
It is unfavorable for using in domestic environment；And the air cleaning unit in technical solution of the present invention is due to using burst pulse electric discharge
Form and relatively low negative dc high voltage (below 30KV) discharge type, and operating current is in below 10mA, suitable in domestic environment
In use.
C, due to the particulate matter handled by industrial production electrostatic precipitator it is complicated, and particle size is not of uniform size, greatly
The particulate matter of particle diameter can be preferential charged, so as to cause fine particle charged insufficient, this can be to less than 10 μm, particularly 2.5 μm
The collection efficiency of following particulate is impacted, or even its collection efficiency is dropped to less than 80%；And in technical solution of the present invention
Air cleaning unit handled by particle size count below 10 μm greatly absolutely, therefore be difficult by other greater particle size particulate matters
Influence, can reach more than 90% collection efficiency.
D, technical scheme are due to using burst pulse discharge type and relatively low negative dc high voltage (below 30KV)
Discharge type (operating current is in below 10mA), the ozone of generation is less；In addition, the air duct afterbody in dust arrester is set
There is ceramic electrical heating tube to be used to eliminate ozone, therefore the ozone concentration produced by whole dust arrester can reach below 0.05ppm, far
Less than safety standard value (GBZ2.1-2007)；And industrial electric cleaner is due to efficiency of dust collection to be ensured, it is impossible to reduce work electricity
Pressure, therefore larger ozone concentration can be produced, it is much larger than People's Republic of China's Occupational sanitary standard《Yard owns
Noxa element occupational exposure limit chemical noxious factor part 1：Chemical noxious factor》0.14ppm in (GBZ2.1-2007)
Safety standard value.
Because a variety of dedusting patterns such as corona discharge, low temperature plasma are complex as a whole by the present invention, applied to interior
(or vehicle-mounted) air purifier, solves the problem of existing air purifier " windage is excessive " and " secondary pollution ", both met
The purpose of fine particle particle in air is removed in the range of the household bulk, air can also be carried out disinfection, it is to avoid purple
The leakage injury problem of outer light radiation.
It the method can be widely used in indoor (or vehicle-mounted) air purification field.
Claims (10)
1. a kind of air cleaning unit for being suitable to remove fine particle in air under the conditions of domestic environment, including air inducing unit,
Air cleaning member and air duct, described air inducing unit is by pending air into air passage, by air cleaning
Purification unit handles heel row to interior, is provided for the space of indoor closing by purification, the clean air sterilized, described air
Clean unit includes charging area, coalescence area, grit collecting region and anion area；It is characterized in that：
Described air cleaning member is by the positive and negative high-voltage pulse charging area that sets gradually, the electrostatic coalescence area under alternating electric field,
Grit collecting region, plasma disinfection area and anion district's groups into；
Wherein, in described positive and negative high-voltage pulse charging area, the first to the 3rd grounded plate electrode, described first to the 3rd are set
The longitudinal axes parallel of grounded plate electrode, side by side, the positive high voltage pulse that described air duct is divided into parallel arranged is charged for position
Area and negative high voltage pulse charging area, between first, second grounded plate electrode between second, third grounded plate electrode, respectively
Positive and negative line corona discharge electrode is set；
Electrostatic coalescence area under described alternating electric field, sets longitudinal axes parallel, position the four, the 5th earth plates electricity arranged side by side
Pole, between the four, the 5th described grounded plate electrodes, sets the 3rd line corona discharge electrode；
In described grit collecting region, longitudinal axes parallel, position the six, the 7th grounded plate electrodes arranged side by side, described are set
Between six, the 7th grounded plate electrodes, the 4th line corona discharge electrode is set；
In described plasma disinfection area, using longitudinal axes parallel, side by side, pattern in pairs sets array to be grounded for position
Electrode plate groups, on the opposite face of described two grounding electrode plates, covering is provided with the insulation board that thickness is less than 5mm；It is described exhausted
10 μm of the surface roughness Ra ＜ of listrium, its planar dimension is more than the planar dimension of the ground connection pole plate；Electricity is grounded in each two
Between pole plate, the 5th line corona discharge electrode is set respectively；
In described anion area, set a conductive carbon fibre net as electrode, described conductive carbon fibre net is waited to locate with described
The flow direction of process gases is perpendicular to be set, and along air-flow direction, is being close to the rear of the conductive carbon fibre net, is being placed extremely
Few one group of ceramic electrical heating tube；
Described air cleaning unit, by using said structure, fine particle in realizing under the conditions of domestic environment to air
Removal and purification to air, sterilization；
Described air cleaning unit, for the μ g/m3 of PM2.5≤500 μ g/m3, PM10≤600 domestic environment, using narrow arteries and veins
Impulse electricity form and negative dc high voltage discharge type, it is right by below 30KV operating voltage and below 10mA operating current
In particulate matter of the particle diameter below 10 μm, more than 90% collection efficiency is realized；Meanwhile, set ceramic electrical heating tube to be used to eliminate smelly
Oxygen, the ozone concentration produced by it can reach below 0.05ppm；With solve existing Household Air Purifier " windage " it is excessive and
The problem of " secondary pollution ", the purpose that PM2.5 particles in air are removed in the range of household bulk can be realized, moreover it is possible to right
Air carries out disinfection, it is to avoid the leakage injury problem of ultraviolet radiation.
2. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that, described air cleaning unit sucks air to be clean by blower unit described air duct,
Wind speed in air duct is less than 0.8m/s；
In described positive and negative high-voltage pulse charging area, air to be clean is divided into two strands, parallel arranged is introduced into respectively
Positive and negative alternate particulate charging area, makes the particulate in two strands of air carry positive and negative electric charge respectively, forms Charge particle, it is empty
Between ion concentration be more than 107/cm3；
When the electrostatic coalescence area that two stocks do not carry positive charge, the Charge particle of negative electrical charge is entered under described alternating electric field
When, two strands of air are merged into one, in the presence of ac high-voltage or pulse ac high-voltage field, and described is positive and negative charged micro-
Grain mutually motion collision, cohesion is the larger particles that particle diameter is 10 μm~90 μm；Now, trickle of 10 μm of particle diameter ＜ in air
Grain can continue coalescence, increase with the bulky grain of above-mentioned coalescence again so that the fine solid particle that 10 μm of particle diameter ＜ is easier to by supplementary set
Or trapping；
When the micronic dust for the larger particles that cohesion is 10 μm~90 μm of particle diameter is by described grit collecting region, in negative dc high voltage
In the presence of, it is collected on ground connection collecting plate, realizes the purification of particulates；
In described plasma disinfection area, high energy particle, active particle produced by the area will kill bacterium, virus and decompose
Pernicious gas, makes air to be clean be sterilized purification；
In described anion area, the negative oxygen ion beneficial to human body is produced, ozone, oxynitrides yield can be controlled again,
It is set to be far below safety standard value；
By above-mentioned steps, described air cleaning unit realize under the conditions of domestic environment to air in fine particle removal
With the purification to air, sterilization.
3. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that, in described positive high voltage pulse charging area and negative high voltage pulse charging area, to described positive and negative line corona
Discharge electrode apply respectively output waveform be narrow square wave positive and negative HVDC square-wave pulse, to ensure in charged space, discharge into
Stable constant electric field is formed in line period, air molecule is obtained enough, consistent, stable ionization energy, fast and stable
Ionization, makes fine particle efficient, rapid charged, it is to avoid the waste of power supply energy, it is ensured that high-voltage operation safety, while avoiding line electricity
The danger of spark discharge is extremely produced to ground electrode.
4. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that,
In described positive and negative high-voltage pulse charging area, applying output waveform respectively to described positive and negative line corona discharge electrode is
The positive and negative high voltage narrow pulse power supply of narrow square wave, the width of its burst pulse is 0.1ms~1ms；The positive and negative HVDC
The magnitude of voltage of square-wave pulse is 3KV~50KV, to adapt to different line electrode-ground connection pole plate spacing；The positive and negative high straightening
The pulse current for flowing square-wave pulse is 0.1~10mA, with fine of diameter equivalent≤2.5 μm that are adapted to different spaces concentration
Grain is charged；
Electrostatic coalescence area under described alternating electric field, ac high voltage source is applied to the 3rd described line corona discharge electrode
Or pulse ac high voltage power supply, the magnitude of voltage of ac high voltage source or the pulse ac high voltage power supply is 3KV~50KV, frequency
For 1Hz~1MHz, electric current is 0.1~10mA；
In described grit collecting region, apply negative dc high voltage power supply to the 4th described line corona discharge electrode, it is described negative straight
The magnitude of voltage for flowing high voltage power supply is 3000~-30KV, and current value is 0.1~10mA；
In described plasma disinfection area, apply high-voltage ac power to the 5th described line corona discharge electrode or pulse is handed over
Power supply is flowed, the magnitude of voltage of its high-voltage ac power or pulse ac power supply is 3KV~50KV, and frequency is 50~500KHz,
Described high-voltage alternating or pulse ac can produce 10 in its discharge space7/cm3Negative ions above；The table of the insulation board
10 μm of surface roughness Ra ＜,
In described anion area, negative direct current sub-high pressure or negative DC pulse high pressure, institute are applied to described conductive carbon fibre net
Negative direct current sub-high pressure or negative DC pulse high pressure are stated, its voltage range is less than 3000V, and electric current is less than 1mA；Anion yield is every
Second is more than 107；
The heating and temperature control scope of the ceramic electrical heating tube is 60~300 DEG C.
5. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that,
In described positive high voltage pulse charging area and negative high voltage pulse charging area, using positive and negative high voltage narrow pulse in air
Dust granules carry out charged, and it is charged to belong to bipolarity alternating-current pulse, can be realized in the same area " opposite sex is charged "；
Electrostatic coalescence area under described alternating electric field, is threaded shape line electrode, using bipolarity alternating-current pulse coalescence, institute
The voltage of application is ac high voltage source or pulse ac high voltage power supply, in the ac high voltage source or pulse ac high-tension electricity
In the respective positive and negative action period of source, its magnitude of voltage keeps constant, and then makes space electric field constant, to charged fine grained
Thing provides uniform electric field power, it is ensured that it obtains enough momentum, and the positive and negative particulate for belonging to charged is electric in alternating-current pulse
Simultaneously, its resistance is small for coagulation off field, coalescence efficiency high, not only adds the carrying capacity of particulate, and can make carrying opposite sex electricity
The little particulate coalescence of lotus is bulky grain；
Negative dc high voltage power supply is applied to spiral type electrode in described grit collecting region, so that the bulky grain condensed is charged
Collect；
In described plasma slab using the smooth insulation board in surface, bacterium is nowhere hidden, be more beneficial for improving sterilizing effect
Really.
6. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that described conductive carbon fibre net its formed by conductive carbon fibre braiding, the fibre diameter of its conductive carbon fibre≤
0.15mm。
7. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that described positive and negative line corona discharge electrode, the 3rd to the 5th line corona discharge electrode are screw thread shape line electricity
Pole, to reduce corona galvanic corrosion of the high-voltage corona to discharge electrode center, prevents that corona wire is broken by high-voltage corona ablation, it is to avoid electric discharge
Vacillating on line electrode, increases the uniformity and stability of electric discharge.
8. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 7 is filled
Put, it is characterized in that diameter≤2.5mm centered on the parameter size of the screw thread shape line electrode, thread taper is 6~18 °, screw thread
Spacing is 1~5mm.
9. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that described air cleaning unit is for pending air, by the way that positive/negative high-voltage pulse is charged, alternating electric field
Under electrostatic coalescence, grit under negative dc high voltage electric field collect, low temperature plasma gas sterilization and increase anion, realize
Under the conditions of domestic environment to air in fine particle removal and purification to air, sterilization, improve dust-collecting efficiency, it is to avoid purple
Outer ray radiation injury, reduces the power consumption of air cleaning unit.
10. the air cleaning that fine particle in air is removed under the conditions of domestic environment according to being suitable to described in claim 1 is filled
Put, it is characterized in that described air cleaning unit is for the μ g/m of PM2.5≤5003, the μ g/m of PM10≤6003Domestic environment, use
Burst pulse discharge type and negative dc high voltage discharge type, pass through below 30KV operating voltage and below 10mA work electricity
Stream, for particulate matter of the particle diameter below 10 μm, realizes more than 90% collection efficiency；Meanwhile, set ceramic electrical heating tube to be used for
Ozone is eliminated, the ozone concentration produced by it can reach below 0.05ppm, far below national safety standard value.
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