CN103776104B - Indoor air-purification device based on low temperature plasma - Google Patents
Indoor air-purification device based on low temperature plasma Download PDFInfo
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- CN103776104B CN103776104B CN201410012918.8A CN201410012918A CN103776104B CN 103776104 B CN103776104 B CN 103776104B CN 201410012918 A CN201410012918 A CN 201410012918A CN 103776104 B CN103776104 B CN 103776104B
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Abstract
The invention discloses the indoor air-purification device based on low temperature plasma, including cone tank, reactor, power supply；The outer wall of cone tank is shaped as cylinder, and the inner chamber of cone tank is the reactor of inverted cone shape；The outer wall of cone tank is uniformly provided with air inlet, between cone tank inside and outside wall, is provided with dirt pocket, inside dirt pocket, be provided with micro-strainer, bottom dirt pocket, be provided with suction hole；Reactor includes the air pump chamber of overlapping arrangement, collection chamber, reative cell, ozone decomposed room, packing layer and thin water layer from bottom to top, is divided into independent space with dividing plate between air pump chamber, collection chamber, reative cell, ozone decomposed room, packing layer。Present invention achieves the multistage dedusting of Interior Space gas；After the reacted room of gas purifies, the purification efficiency (CADR) of the floating antibacterial of Indoor Natural, pellet (dust, flue dust etc.), formaldehyde and volatile organic matter etc., up to more than 90%, significantly improves IAQ (indoor air quality)。
Description
Technical field
The present invention relates to Techniques for Indoor Air Purification field, particularly relate to a kind of indoor air-purification device based on low temperature plasma。
Background technology
In recent years, the impact of health is increasingly received the concern of people by indoor environmental pollution。Indoor many polluter can discharge VOC (VOCs), NOx, O3Deng the material that health is had side effects。Wherein, VOCs is one of main indoor pollutant。Under normal circumstances, office appliance, insulant, furniture, abluent, air freshener, solvent, maintenance product, pressed wood etc. can discharge VOCs。In addition, tobacco smoke also can increase the amount of the VOCs in air。Human body can be caused various bad health effect by VOCs, as: anaphylaxis, headache, eyes, nose and throat inflammation, dry cough, dizziness and nausea, aprosexia, fatigue is even carcinogenic。
The traditional treatment method of indoor VOCs mainly includes activated carbon adsorption, catalysis burning, photocatalysis etc.。But, they are the defect of but various degrees in indoor VOCs purification。For absorption method, in order to ensure continuous operation, adsorbent must carry out periodic replacement or regeneration。And, the recycling consumed energy of adsorbent, and it is disposed the environmental problem that can cause other。Catalytic oxidation is a kind of technology that can effectively remove VOCs。But, the concentration of indoor VOCs is relatively low (being generally in the scope of 1-1000ppm), so, in order to be able to reach the temperature of catalyst work, it is necessary to air-flow is significantly heated。Photocatalysis technique is frequently with irradiation under ultraviolet ray TiO2Method。Simple nano titanium dioxide photocatalysis degradation technique yet suffers from some defects: 1) electronics and hole have higher in conjunction with rate；2) absorption wave band is narrower, and part is in ultraviolet light section；3) light quantum is inefficient。Additionally, the preparation of catalysis material is comparatively difficult, this limits light-catalysed application too。
Low temperature plasma (NTP) technology can effectively control the pollutant in air, so the degraded being applied in room air by this technology the horizontal VOCs of low concentration also result in the concern of people。Low temperature plasma can be produced by alternating current, unidirectional current or pulsed high voltage discharges, and it has O, OH, OH of high energy electron, excited state particle, other active particle and strong oxidizing property2Deng free radical。In low temperature plasma, the average energy of electronics is more much higher than other vapour particles。Under normal circumstances, the concentration of pollutant is relatively low, so high energy electron and O2、N2The probability collided Deng background gas molecule is significantly larger than the collision probability with contaminant molecule。In collision process, create ion, free radical, metastable particle and neutral atom isoreactivity particle, in the process that organic compound conversions is the material such as carbon dioxide, water, there occurs a series of reaction。In dry environment, the collisional dissociation of electronics and ionizing are main degradation pathway, and in wet environment, also have the adhesion effect of electronics except two above-mentioned approach。Meanwhile, the ultraviolet light of generation also acts as the effect of sterilization。
Many studies have shown that: NTP technology has good application prospect in purifying the air of a room。Therefore, the degrade technology of VOCs of many application of cold temperature plasmas such as such as electron beam, dielectric barrier discharge, corona discharge etc. is just arisen at the historic moment。Compared with above-mentioned conventional processing technique, NTP technology has high chemism, is swift in response, and conversion ratio is high, the advantages such as running cost is low, is therefore a kind of rich promising VOCs treatment technology。
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of indoor air-purification device based on low temperature plasma。Its all drawback existing for room air pollution conventional purification technology, it is provided that a kind of can be quick, efficient, economical indoor air cleaning system, to reaching the purpose of high-efficient purification, effective oxygen enrichment。
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: based on the indoor air-purification device of low temperature plasma, including cone tank, reactor, power supply；
The outer wall of cone tank is shaped as cylinder and includes the inner chamber of inverted cone shape；The outer wall of cone tank is uniformly provided with air inlet, between cone tank inside and outside wall, is provided with dirt pocket, inside dirt pocket, be provided with micro-strainer, bottom dirt pocket, be provided with suction hole；
Reactor has the profile suitable with the inner chamber of cone tank and can load inner chamber；Reactor includes the air pump chamber of overlapping arrangement, collection chamber, reative cell, ozone decomposed room, packing layer and thin water layer from bottom to top, is divided into independent space with dividing plate between air pump chamber, collection chamber, reative cell, ozone decomposed room, packing layer；
Being provided with micro air pump in air pump chamber, the air entry of micro air pump is provided with filter mantle and reaches collection chamber, and the air vent of micro air pump connects with reative cell；
Reative cell is provided with the pin-plate reactor being made up of needle electrode and plate electrode, and the positive pole of power supply is connected with needle electrode, and the negative pole of power supply is connected with plate electrode；Reactor top is provided with output and purifies the air vent of air；
Ozone decomposition catalyst is put in ozone decomposed indoor；Ozone decomposed room is connected by blow-down pipe with reative cell；
Ozone decomposed ceiling portion is provided with the steam vent connected with packing layer, and the upper strata of packing layer is provided with thin water layer。
As preferably, ozone decomposition catalyst adopts the microporous activated carbon Supported Manganese iron catalyst of particle diameter Φ 2～5mm。
As preferably, packing layer is made up of the sandstone pellet of particle diameter Φ 5～10mm。
As preferably, the thickness of thin water layer is 20mm。
As preferably, power supply is high-frequency and high-voltage power supply, and the power frequency that high-frequency and high-voltage power supply produces is 5～35kHz, and power is 20～100W；The both positive and negative polarity of high-frequency and high-voltage power supply is connected with the needle electrode of pin-plate reactor and plate electrode respectively。
As preferably, the power frequency that high-frequency and high-voltage power supply produces is 15～25kHz, it is preferred to 20kHz。
As preferably, also including the first electromagnetic valve and the second electromagnetic valve；First electromagnetic valve is located at air pump chamber with on the interface channel of reative cell, and the second electromagnetic valve is located at blow-down pipe end。
As preferably, also including bonsai type plastic and plant；Bonsai type plastic and plant includes mobile jib, side shoot and blade；The root of mobile jib is connected with reactor top；Mobile jib with lay the appendix connected with reative cell air vent in the middle of side shoot, blade bottom surface distribution have the exhaust capillary connected with appendix end。
As preferably, the diameter of blade bottom surface exhaust capillary is 2mm。
As preferably, cone tank and reactor are modular construction。
The invention has the beneficial effects as follows:
Achieve the multistage dedusting of Interior Space gas；Micro air pump is provided separately within air pump chamber, to avoid its secondary pollution to sucking air, and the sound pollution produced to external world when reducing micro air pump work；Wherein remaining ozone conversion, through ozone decomposed room and thin water layer, can be become oxygen, serve the effect of oxygen enrichment, humidification by reacted gas；After the reacted room of gas purifies, the purification efficiency (CADR) of the floating antibacterial of Indoor Natural, pellet (dust, flue dust etc.), formaldehyde and volatile organic matter etc., up to more than 90%, significantly improves IAQ (indoor air quality)。
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation。
Fig. 1 is the present invention structural representation based on the indoor air-purification device embodiment of low temperature plasma。
Fig. 2 is the structural representation of the present invention cone tank based on the indoor air-purification device embodiment of low temperature plasma and reactor。
Fig. 3 is present invention bottom side, the blade face partial enlarged view based on the indoor air-purification device embodiment of low temperature plasma。
Accompanying drawing illustrates:
1-cone tank, 2-reactor, 3-landscape of plastics, 4-power supply and on-line computing model, 5-air inlet, 6-dirt pocket, 7-suction hole, 8-collection chamber, 9-filter mantle, 10-air pump chamber, 11-micro air pump, 12-reative cell, 13-needle electrode, 14-plate electrode, 15-1# electromagnetic valve, 16-passage, 17-appendix, 18-exhaust capillary, 19-blow-down pipe, 20-2# electromagnetic valve, 21-ozone decomposed room, 22-ozone decomposition catalyst, 23-steam vent, 24-packing layer, the thin water layer of 25-。
Detailed description of the invention
Fig. 1 is a kind of indoor air purification oxygen enrichment based on low temperature plasma and dynamic potted landscape analog systems, is mainly made up of cone tank 1, reactor 2, landscape of plastics 3 and power supply and on-line computing model 4 four part。Wherein, cone tank 1 and reactor 2 are assembled, it is simple to cleaning laying dust and facility maintenance。
In fig. 2, cone tank 1 is the cylinder groove of cylindrical inner cone, and this groove lateral surface is evenly distributed with the air inlet 5 of Φ 5mm from bottom more than 110mm to top below 50mm。Cone tank 1 is internal is dirt pocket 6, reaches dedusting purpose by arranging micro-strainer。Arranging Φ 5mm suction hole 7 bottom dirt pocket 6, the air that removing dust processes enters reactor 2 through this hole。
Reactor 2 is made up of air pump chamber 10, collection chamber 8, reative cell 12, ozone decomposed room 21, packing layer 24 and thin water layer 25。Being provided separately within air pump chamber 10 by micro air pump 11, be connected with collection chamber 8 by filter mantle 9 simultaneously, so one side can weaken micro air pump 11 when working significantly, the sound pollution produced to external world；Its secondary pollution to sucking air can be avoided on the other hand。Reative cell 12 is internal arranges two trocar plate-type reactors, and this reactor is mainly made up of needle electrode 13 and plate electrode 14。Micro air pump 11 is communicated to reative cell 12 by 1# electromagnetic valve and needle electrode 13。The passage 16 that reative cell 12 is arranged by top is connected with appendix 17。The built-in ozone decomposition catalyst 22 in ozone decomposed room 21, this catalyst mainly adopts the microporous activated carbon Supported Manganese iron catalyst of particle diameter Φ 2～5mm。Meanwhile, arranging blow-down pipe 19 inside ozone decomposed room 21, its end is provided with 2# electromagnetic valve, and purified gas enters this room through blow-down pipe, and making the ozone conversion that in gas, the overwhelming majority is remaining with ozone decomposition catalyst 22 by reacting is oxygen。The steam vent 23 that gas is arranged by top, ozone decomposed room 21 communicates with packing layer 24, and packing layer 24 internal main to place the sandstone pellet of particle diameter Φ 5～10mm。Gas enters thin water layer 25 through packing layer 24, and thin water layer has the water that thickness is 20mm。Wherein in gas, the ozone of micro residue is highly soluble in water, and then is converted into oxygen。Efflux gas is with certain moisture simultaneously, it is possible to increase indoor air humidity。
Laying appendix 17 inside landscape of plastics 3 branch, Φ 2mm exhaust capillary 18 (Fig. 3) is laid in bottom side, blade face, and gas can drive the faint swing of potted landscape branch and leaf in flow process, produces breezy, natural visual enjoyment of taking a shower。
Power supply and on-line computing model 4 are integrated form integration apparatus, wherein the two poles of the earth of pin-plate reactor are connected with high-frequency and high-voltage power supply respectively, high-frequency and high-voltage power supply produces electrion, power can be 20～100W, the power frequency produced can be 5～35kHz, it is preferably 15～25kHz, it is most preferred that about 20kHz。Pin-plate reactor, micro air pump 11,1# electromagnetic valve 15 and 2# electromagnetic valve 20 realize fast opening and closing by the switch on power supply and on-line computing model 4。On-line computing model mainly monitors room air pollution index, when index exceedes conventional value, automatically sends chimes of doom to remind people open this system and then improve IAQ (indoor air quality)。
Work process:
Room air achieves one-level through air inlet 5 and intercepts dedusting, subsequently into dirt pocket 6。Air is in this room flow process, and part dust and micro-strainer occur to clash into and be trapped removal。Air after the purification of removing dust room 6 enters collection chamber 8 through suction hole 7, and collection chamber 8 is internal is equipped with filter mantle 9, is connected with the micro air pump 11 in air pump chamber 10 by appendix。Air in collection chamber 8 is pumped into reative cell 12 through 1# electromagnetic valve and needle electrode 13 by micro air pump 11。The air entering reative cell 12 discharges under the effect of pin-plate reactor, then produces O, OH, OH of high energy electron, excited state particle, other active particle and strong oxidizing property2Deng free radical, the VOC VOCs in air can fast and effeciently be degraded removal by above-mentioned substance。Air after purification is connected with the appendix 17 in landscape of plastics 3 through passage 16, and discharges system by the exhaust capillary 18 on the downside of landscape of plastics 3 blade face。Gas can drive the faint swing of potted landscape branch and leaf in flow process, produces breezy, natural visual enjoyment of taking a shower。Consider that the air in landscape of plastics 3 is in transportation process, lasts longer；Ozone is very unstable simultaneously, namely can be analyzed to oxygen, therefore do not take decomposition measure individually for wherein remaining ozone under room temperature normality normal pressure。
Simultaneously, it is contemplated that landscape of plastics 3 can be caused damage by the factor such as air mass flow and air pressure, therefore the hypomere of the appendix 17 in ozone decomposed room 21 arranges blow-down pipe 19, and the end at blow-down pipe 19 is provided with 2# electromagnetic valve, for controlling the opening and closing of blow-down pipe。Ozone decomposition catalyst 22 in the gas and ozone decomposed room 21 of blow-down pipe 19 discharge reacts and makes the ozone conversion that in gas, the overwhelming majority is remaining is oxygen, then the steam vent 23 arranged by top, ozone decomposed room 21 is communicated with packing layer 24, and packing layer 24 internal main to place the sandstone pellet of particle diameter Φ 5～10mm。Gas enters thin water layer 25 through packing layer 24, and this layer thickness is 20mm。Wherein in gas, the ozone of micro residue is highly soluble in water, and then is converted into oxygen。Efflux gas is with certain moisture simultaneously, it is possible to increase indoor air humidity。
Pin-plate reactor, micro air pump 11,1# electromagnetic valve 15 and 2# electromagnetic valve 20 realize fast opening and closing each through the switch on power supply and on-line computing model 4。On-line computing model mainly monitors room air pollution index, when index exceedes conventional value, automatically sends chimes of doom to remind people open this system and then improve IAQ (indoor air quality)。
The present embodiment has a characteristic that
1) by air inlet, dirt pocket, suction hole and filter mantle, it is achieved that the multistage dedusting of Interior Space gas；
2) cone tank and reactor are assembled, it is simple to cleaning laying dust and facility maintenance；
3) micro air pump is provided separately within air pump chamber, is connected with collection chamber by filter mantle simultaneously, when can significantly weaken micro air pump work on the one hand, the sound pollution produced to external world；Its secondary pollution to sucking air can be avoided on the other hand；
4) after the reacted room of gas purifies, the purification efficiency (CADR) of the floating antibacterial of Indoor Natural, pellet (dust, flue dust etc.), formaldehyde and volatile organic matter etc., up to more than 90%, significantly improves IAQ (indoor air quality)；
5) reacted gas is through ozone decomposed room and thin water layer, wherein remaining ozone conversion can be become oxygen, serve the effect of oxygen enrichment, humidification；
6) adopting dynamic analog potted landscape as tail gas discharge system, gas can drive the faint swing of potted landscape branch and leaf in flow process, produces breezy, natural visual enjoyment of taking a shower。
Invention described above embodiment, is not intended that limiting the scope of the present invention。Any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within the claims of the present invention。
Claims (11)
1. based on the indoor air-purification device of low temperature plasma, it is characterised in that: include cone tank, reactor, power supply；
The outer wall of described cone tank is shaped as cylinder and includes the inner chamber of inverted cone shape；The outer wall of cone tank is uniformly provided with air inlet, is provided with dirt pocket between cone tank inside and outside wall, inside described dirt pocket, is provided with micro-strainer, bottom dirt pocket, be provided with suction hole；
Described reactor has the profile suitable with the inner chamber of cone tank and can load inner chamber；Described reactor includes the air pump chamber of overlapping arrangement, collection chamber, reative cell, ozone decomposed room, packing layer and thin water layer from bottom to top, is divided into independent space with dividing plate between described air pump chamber, collection chamber, reative cell, ozone decomposed room, packing layer；
Being provided with micro air pump in described air pump chamber, the air entry of described micro air pump is provided with filter mantle and reaches collection chamber, and the air vent of described micro air pump connects with reative cell；
Described reative cell is provided with the pin-plate reactor being made up of needle electrode and plate electrode, and the positive pole of described power supply is connected with needle electrode, and the negative pole of power supply is connected with plate electrode；Reactor top is provided with output and purifies the air vent of air；
Ozone decomposition catalyst is put in described ozone decomposed indoor；Ozone decomposed room is connected by blow-down pipe with reative cell；
Described ozone decomposed ceiling portion is provided with the steam vent connected with packing layer, and the upper strata of packing layer is provided with thin water layer。
2. indoor air-purification device according to claim 1, it is characterised in that: described ozone decomposition catalyst adopts the microporous activated carbon Supported Manganese iron catalyst of particle diameter Φ 2～5mm。
3. indoor air-purification device according to claim 1, it is characterised in that: described packing layer is made up of the sandstone pellet of particle diameter Φ 5～10mm。
4. indoor air-purification device according to claim 1, it is characterised in that: the thickness of described thin water layer is 20mm。
5. indoor air-purification device according to claim 1, it is characterised in that: described power supply is high-frequency and high-voltage power supply, and the power frequency that described high-frequency and high-voltage power supply produces is 5～35kHz, and power is 20～100W；The both positive and negative polarity of described high-frequency and high-voltage power supply is connected with the needle electrode of pin-plate reactor and plate electrode respectively。
6. indoor air-purification device according to claim 5, it is characterised in that: the power frequency that described high-frequency and high-voltage power supply produces is 15～25kHz。
7. indoor air-purification device according to claim 6, it is characterised in that: the power frequency that described high-frequency and high-voltage power supply produces is 20kHz。
8. indoor air-purification device according to claim 1, it is characterised in that: also include the first electromagnetic valve and the second electromagnetic valve；Described first electromagnetic valve is located at air pump chamber with on the interface channel of reative cell, and described second electromagnetic valve is located at blow-down pipe end。
9. indoor air-purification device according to claim 1, it is characterised in that: also include bonsai type plastic and plant；Described bonsai type plastic and plant includes mobile jib, side shoot and blade；The root of described mobile jib is connected with reactor top；Mobile jib with lay the appendix connected with reative cell air vent in the middle of side shoot, described blade bottom surface distribution have the exhaust capillary connected with appendix end。
10. indoor air-purification device according to claim 9, it is characterised in that: the diameter of described blade bottom surface exhaust capillary is 2mm。
11. indoor air-purification device according to claim 1, it is characterised in that: described cone tank and reactor are modular construction。
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| CN103776104B true CN103776104B (en) | 2016-06-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104990138B (en) * | 2015-05-28 | 2018-12-18 | 广东美的制冷设备有限公司 | Air cleaning unit, household electrical appliance and air purification method |
| CN111569617B (en) * | 2019-02-19 | 2021-07-20 | 清华大学 | Air purifying device |
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| CN102057227A (en) * | 2008-06-24 | 2011-05-11 | 大金工业株式会社 | Ventilation device |
| CN102428324A (en) * | 2009-06-09 | 2012-04-25 | 夏普株式会社 | Air blowing device and ion generating device |
| CN102743784A (en) * | 2012-07-13 | 2012-10-24 | 浙江佩洁尔医疗科技有限公司 | Plasma reactor |
| CN103216894A (en) * | 2013-03-19 | 2013-07-24 | 郑州金石环境技术有限公司 | Plasma air purifier |
| CN203810560U (en) * | 2014-01-10 | 2014-09-03 | 安徽锋亚环境技术有限公司 | Indoor air purifying device based on low temperature plasma |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101007199B1 (en) * | 2008-09-16 | 2011-01-12 | (주)알투알 | Humidifier having sterilization and air cleaning function |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102057227A (en) * | 2008-06-24 | 2011-05-11 | 大金工业株式会社 | Ventilation device |
| CN102428324A (en) * | 2009-06-09 | 2012-04-25 | 夏普株式会社 | Air blowing device and ion generating device |
| CN102743784A (en) * | 2012-07-13 | 2012-10-24 | 浙江佩洁尔医疗科技有限公司 | Plasma reactor |
| CN103216894A (en) * | 2013-03-19 | 2013-07-24 | 郑州金石环境技术有限公司 | Plasma air purifier |
| CN203810560U (en) * | 2014-01-10 | 2014-09-03 | 安徽锋亚环境技术有限公司 | Indoor air purifying device based on low temperature plasma |
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