CN107149857A - Multi-layer planar corona low temperature plasma air cleaning unit - Google Patents
Multi-layer planar corona low temperature plasma air cleaning unit Download PDFInfo
- Publication number
- CN107149857A CN107149857A CN201610118175.1A CN201610118175A CN107149857A CN 107149857 A CN107149857 A CN 107149857A CN 201610118175 A CN201610118175 A CN 201610118175A CN 107149857 A CN107149857 A CN 107149857A
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- China
- Prior art keywords
- cleaning unit
- air cleaning
- metal plate
- grid
- molybdenum filament
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a kind of multi-layer planar corona low temperature plasma air cleaning unit, including the cavity surrounded by insulative support housings, the metal plate of multilayer parallel is provided with cavity, it is parallel between adjacent metal flat board to be placed centrally molybdenum filament grid；Nano-TiO is coated with the surface of the metal plate and molybdenum filament grid2Coating；Using metal plate as anode, the ground terminal of negative high voltage driving power supply is connected, using molybdenum filament grid as negative electrode, connection and the negative terminal of negative high voltage driving power supply.Under the electric drive of negative high voltage driving power supply, the device produces high-voltage corona plasma, and the particulate matter high-efficient cleaning in air is removed, to bioaerosol quick inactivating, low windage, low energy consumption, and non-secondary pollution.
Description
Technical field
The present invention relates to air cleaning unit, more particularly to a kind of multi-layer planar corona low temperature plasma for air cleaning is filled
Put.
Background technology
Air pollution is on the rise, and causes various negative health effects to health, including injury of lungs, anaphylactia, no
Good acute reaction and sick building syndrome etc..The air cleaning means of current main flow have following several：
1. filter membrane, relevant for the removal efficiency of pollutant and the thickness of filter membrane, this will hinder the circulation of air significantly, and
It can not usually gather less biotic component (as virus) inside method system only with filtering, and under those are collected
The composition come may continue to grow and breeds when humidity is high, be likely to become pollution source.Solution is in filtering
Anti-biotic material is added in film with the growth for the microorganism for suppressing enrichment, can thus avoid the secondary pollution of bioaerosol,
Reduce potential health hazard.But, this method also has shortcoming, and one is the term of validity for the filter membrane that with the addition of antiseptic
It is not long, and many antiseptics are harmful to environment in itself, and must be in competence exertion inactivation microorganism under aerobic conditions
Effect；Two be that these filter membranes for adding antiseptics are removed to virus, anaphylactogen etc. without cyto-architectural bioaerosol
Act on very little.
2. ultraviolet radioactive, especially UV-C, with higher photon energy, can penetrate the cell membrane and nucleus of microorganism,
DNA molecular link can be destroyed, it is lost replication capacity or is lost activity, the death of microorganism is ultimately resulted in, but
Purification of the ultraviolet radioactive to particulate matter is invalid.Uviol lamp is extensively using controlling bioaerosol.Much research is pointed out,
There is reversible, that is, photoreactivation phenomenon in the DNA of microorganism caused by uviol lamp destruction.And wavelength is 254
Nm ultraviolet light produces ozone and free radical while biotic component is inactivated, and these materials are harmful.So, it is purple
External radiation is not a kind of inactivation technology of environmentally friendly type.
3. Electrostatic Absorption, the clean-up effect of the particulate pollutant larger to particle diameter is preferable, but can not purify gaseous contaminant, meanwhile,
The secondary pollutions such as ozone can also be produced.Present indoor electrostatic air cleaner mainly has 3 types：Ionization polar plate type,
Charge carrying media non-electrical is release and charge carrying media ionization type, and uses positive corona discharge, because positive corona discharge compares negative corona
The ozone concentration produced that discharges is low, but under identical voltage condition, positive corona discharge corona current is low, and purification efficiency is low,
The aerial cation concentration of distribution is caused to improve.In order to further reduce ozone concentration, reduce the work electricity of clarifier
Pressure, uses two-stage negative ion air-cleaner at present, and prime is regular air clarifier, and rear class is ozone eliminator, this
The Electrostatic Absorption technology of sample is used in the production of air purifier, and filtrating type air purifier comparative costs is relatively high.
The content of the invention
It is low using multi-layer planar corona low-temperature plasma generator it is an object of the invention to provide a kind of air cleaning unit
Windage, low energy consumption can be removed to the particulate matter high-efficient cleaning in air, to bioaerosol quick inactivating, and non-secondary pollution.
To achieve the above object, the present invention proposes following technical scheme：One kind is occurred based on multi-layer planar corona low temperature plasma
The air cleaning unit of device, including insulative support housings, metal plate, molybdenum filament grid and negative high voltage driving power supply, by insulation branch
Support shell surrounds a cavity, and the metal plate of multilayer parallel is provided with cavity, parallel between adjacent metal flat board to put between two parties
Put molybdenum filament grid；Nano-TiO is coated with the surface of the metal plate and molybdenum filament grid2Coating；The metal plate is used as sun
Pole, is connected by wire with the ground terminal of negative high voltage driving power supply；And the molybdenum filament grid passes through wire and negative high voltage as negative electrode
The negative terminal of driving power supply is connected；High-voltage corona plasma is produced under the electric drive of negative high voltage driving power supply.
In the air cleaning unit of the present invention, the metal plate can use aluminium or stainless steel base, or other metals
Substrate, the thickness of metal plate is preferably 0.5~1mm.Typically 3 layers or more layer metal plate are equidistantly placed in parallel, phase
Spacing between adjacent metal plate is preferably 20~60mm.
The molybdenum filament grid is parallel to be placed centrally between adjacent metal flat board, the molybdenum filament grid can be individual layer or
Double-deck.It is preferably to be made up of one layer of vertical grid and one layer of horizontal grid when using double-deck molybdenum filament grid, the spacing for indulging grid and horizontal grid will
Within the 2% of adjacent metal flat board spacing.
The molybdenum filament diameter for constituting molybdenum filament grid is preferably 0.05~0.20mmmm.
It is coated in the nano-TiO of metal plate and molybdenum filament gate surface2The thickness of coating is preferably 5~10 μm, excites the electricity of generation
Corona plasma can be with nano-TiO2Coating carries out photocatalysis collaboration sterilizing, removes chemical pollutant.The nano-TiO2Coating
It is preferred that by the coreless armature dielectric impedance configuration plasma generating means of superior electron density can be produced (referring to Application No.
201510313424.8 Chinese patent application) spraying obtain, the operating voltage that spraying process is used be 300~800V, work electricity
Flow for 10~20mA, working gas is TiCl4The Volatile Gas of solution, flow is 10~50sccm.
The insulative support housings play structural support and insulating effect to metal plate and molybdenum filament grid, can use ABS resin or Buddhist nun
Imperial material.
The negative high voltage driving power supply can be pulse or direct current driving power supply；The voltage of its pulse produced is -8kV~-12kV,
Electric current is 3~5mA.
The air cleaning unit that the present invention is provided is simple in construction, and energy consumption is low, without secondary pollution, only needs periodic cleaning, just can be real
Now the high-efficient cleaning of pollutants in air is removed and quick inactivating, to the microorganism in air, PM2.5, and the dirt such as benzene, formaldehyde
Dye thing has very high purification efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the air cleaning unit of the invention based on multi-layer planar corona low-temperature plasma generator, its
In：1- metal plates, 2- molybdenum filament grids, 3- insulative support housings, 4- negative high voltage driving power supplies, 5- nano-TiOs2Coating.
Embodiment
Below by way of specific embodiment, the present invention will be further described, to more fully understand the present invention, but not office of the invention
It is limited to this.
Experimental method used in following embodiments is conventional method unless otherwise specified；Examination used in following embodiments
Agent, material and detection device etc., unless otherwise specified, are commercially obtained.
Embodiment 1：
The air cleaning unit of the present embodiment is as shown in figure 1, be to include the corona low-temperature plasma of four layers of parallel metal plate 1
Spacing between body generating means, the thickness 1mm of metal plate 1, adjacent metal flat board 1 is 30mm；The adjacent metal of each two
An individual layer molybdenum wire grid pole 2, a diameter of 0.18mm of molybdenum filament are placed in parallel between flat board 1 between two parties；Using coreless armature dielectric impedance knot
Structure plasma producing apparatus is sprayed to metal plate 1 and molybdenum filament grid 2, and its operating voltage is 300~800V, work
Electric current is 10~20mA, and working gas is TiCl4The Volatile Gas of solution, flow is 10~50sccm, in metal plate and molybdenum filament
Gate surface formation thickness is 5~10 μm of nano-TiO2Coating 5；Insulative support housings 3 are to metal plate 1 and molybdenum filament grid
2 supporting constructions and insulating effect；Ground terminal (GND) the connection metal plate 1 of negative high voltage driving power supply 4, negative terminal (- HV)
Connect molybdenum filament grid 2.
Pass through clean-up effect of following experimental examinations air cleaning unit to microorganism：
1) by air cleaning unit shown in Fig. 1 as 28m3In the closed Laboratory Module in microbial exposure storehouse；
2) by microbial aerosol generator as Laboratory Module diagonal center, apart from ground 1.2m, bacterium (white grapes ball is sprayed
Bacterium 8032 (5-7 generations) 5min, while opening fan agitation 15min, makes aerosol be uniformly dispersed in cabin, static 15min
Afterwards, 1min is gathered with six grades of collectors (flow velocity 28.3L/min) of Anderson, gathers height 1.2m, sampled as 0min；
3) air cleaning unit shown in Fig. 1 is opened, gas in cabin is passed through, by electric drive, voltage is -8kV, and electric current is 1mA.
4) respectively at air cleaning unit start work 30min, 60min, 90min and 120min time, by step 2
Method gathers air in cabin with six grades of collectors of Anderson；
5) after collection terminates, sampling flat board is put into 37 DEG C of culture 48h of constant incubator, clump count is calculated.
In test, same batch cultivation base is cultivated, is used as experiment negative control.Comparison device (is not turned on air
Purifier, is only passed through gas in cabin) progress spray bacterium and follow-up collection in the same way are placed in control cabin, it is used as control
Group.
Above-mentioned experiment is repeated 3 times, and draws testing result as shown in Table 1 and Table 2：
Staphylococcus albus natural decay rate in the exposure compartment control group air of table 1.
The degerming rate of staphylococcus albus in the exposure compartment test group air of table 2.
Note：Negative control group asepsis growth；25 DEG C~26 DEG C of test temperature, relative humidity 43%~48%.
Contrasted, tested through three repetitions, air cleaning unit of the invention can effectively remove bacterium, in 28m from Tables 1 and 23
Microbial exposure cabin in start shooting work 30min, 60min, 90min and 120min, to the degerming rate of staphylococcus albus in air
It is 43.18%, 90.62%, 99.32% and 100% respectively.
By following experimental examinations air cleaning unit to PM2.5, benzene, formaldehyde clean-up effect：
Detect Appreciation gist：《It is method that air purifier, which is surveyed,》(0D-2A012-2010)；Detection environment is 30m3Environment is surveyed
Cabin is tried, test temperature is 25 DEG C, relative humidity is 45%.
As shown in table 3, air cleaning unit of the invention is 99.7% to 1 hour purification efficiency of PM2.5 in air to testing result,
Clean air delivery rate (CADR) is 171m3/h；1 hour purification efficiency to benzene in air is 99.6%, Clean air delivery rate (CADR)
For 165m3/h；It is 76.3% to 1 hour purification efficiency of formaldehyde in air, Clean air delivery rate (CADR) is 43.2m3/h。
The air cleaning unit of the present invention of table 3. to PM2.5, benzene, formaldehyde clean-up effect
Claims (10)
1. a kind of air cleaning unit, including insulative support housings, metal plate, molybdenum filament grid and negative high voltage driving power supply, wherein：
A cavity is surrounded by insulative support housings, the metal plate of multilayer parallel is provided with cavity, between adjacent metal flat board
It is parallel to be placed centrally molybdenum filament grid；Nano-TiO is coated with the surface of the metal plate and molybdenum filament grid2Coating；It is described
Metal plate is connected as anode by wire with the ground terminal of negative high voltage driving power supply；And the molybdenum filament grid is as negative electrode,
It is connected by wire with the negative terminal of negative high voltage driving power supply；Produced under the electric drive of negative high voltage driving power supply high-voltage corona etc. from
Daughter.
2. air cleaning unit as claimed in claim 1, it is characterised in that the material of the metal plate is aluminium or stainless steel.
3. air cleaning unit as claimed in claim 1, it is characterised in that the thickness of the metal plate is 0.5~1mm.
4. air cleaning unit as claimed in claim 1, it is characterised in that multimetal offset plate is equidistantly placed in parallel, adjacent gold
It is 20~60mm to belong to the spacing between flat board.
5. air cleaning unit as claimed in claim 1, it is characterised in that the molybdenum wire grid extremely individual layer or double-deck, wherein
Double-deck molybdenum filament grid is made up of one layer of vertical grid and one layer of horizontal grid, indulges the spacing of grid and horizontal grid in adjacent metal flat board spacing
Within 2%.
6. air cleaning unit as claimed in claim 1, it is characterised in that the molybdenum filament of the composition molybdenum filament grid is a diameter of
0.05~0.20mm.
7. air cleaning unit as claimed in claim 1, it is characterised in that the nanometer of metal plate and the molybdenum filament gate surface
TiO2The thickness of coating is 5~10 μm.
8. air cleaning unit as claimed in claim 1, it is characterised in that the nano-TiO2Coating is situated between by coreless armature
Matter barrier structure plasma producing apparatus is obtained in metal plate and molybdenum filament grid surface spraying, the work that spraying process is used
Voltage is 300~800V, and operating current is 10~20mA, and working gas is TiCl4The Volatile Gas of solution, flow is
10~50sccm.
9. air cleaning unit as claimed in claim 1, it is characterised in that the material of the insulative support housings is ABS resin
Or nylon.
10. air cleaning unit as claimed in claim 1, it is characterised in that the negative high voltage driving power supply is that pulse or direct current drive
Dynamic power supply；The voltage of its pulse produced is -8kV~-12kV, and electric current is 3~5mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118175.1A CN107149857A (en) | 2016-03-02 | 2016-03-02 | Multi-layer planar corona low temperature plasma air cleaning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118175.1A CN107149857A (en) | 2016-03-02 | 2016-03-02 | Multi-layer planar corona low temperature plasma air cleaning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107149857A true CN107149857A (en) | 2017-09-12 |
Family
ID=59791986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610118175.1A Pending CN107149857A (en) | 2016-03-02 | 2016-03-02 | Multi-layer planar corona low temperature plasma air cleaning unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425611A (en) * | 2018-02-06 | 2018-08-21 | 西安交通大学 | A kind of air purification vent window based on impulse electric corona plasma |
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| CN102836639A (en) * | 2011-06-24 | 2012-12-26 | 北京大学 | Automotive exhaust purification apparatus based on composition of titanium dioxide photocatalysis and plasma device |
| CN104043320A (en) * | 2014-05-11 | 2014-09-17 | 郑巍 | Method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic |
| CN104415659A (en) * | 2013-08-19 | 2015-03-18 | 纳米及先进材料研发院有限公司 | Plasma driven catalyst system for disinfection and purification of gases |
| CN104936371A (en) * | 2015-06-09 | 2015-09-23 | 北京大学 | Hollow electrode medium blocking structure |
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2016
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785485A (en) * | 2005-05-20 | 2006-06-14 | 清华大学 | Plasma discharge catalytic air purifier |
| CN102230410A (en) * | 2011-06-24 | 2011-11-02 | 北京大学 | Automobile exhaust gas purification device realizing photocatalysis based on plasmas |
| CN102269032A (en) * | 2011-06-24 | 2011-12-07 | 北京大学 | Automobile exhaust purifier with synergetic effect of plasma and titanium dioxide |
| CN102836639A (en) * | 2011-06-24 | 2012-12-26 | 北京大学 | Automotive exhaust purification apparatus based on composition of titanium dioxide photocatalysis and plasma device |
| CN202289842U (en) * | 2011-10-27 | 2012-07-04 | 宇星科技发展(深圳)有限公司 | Plasma discharge-catalyzed air purifying device |
| CN104415659A (en) * | 2013-08-19 | 2015-03-18 | 纳米及先进材料研发院有限公司 | Plasma driven catalyst system for disinfection and purification of gases |
| CN104043320A (en) * | 2014-05-11 | 2014-09-17 | 郑巍 | Method for treatment of indoor air pollution by combination of photocatalytic plasma and ultrasonic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108425611A (en) * | 2018-02-06 | 2018-08-21 | 西安交通大学 | A kind of air purification vent window based on impulse electric corona plasma |
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Application publication date: 20170912 |