CN203249330U - Conducting nano TiO2 composite photocatalysis air purification device - Google Patents
Conducting nano TiO2 composite photocatalysis air purification device Download PDFInfo
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- CN203249330U CN203249330U CN 201320097492 CN201320097492U CN203249330U CN 203249330 U CN203249330 U CN 203249330U CN 201320097492 CN201320097492 CN 201320097492 CN 201320097492 U CN201320097492 U CN 201320097492U CN 203249330 U CN203249330 U CN 203249330U
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Abstract
A conducting nano TiO2 composite photocatalysis air purification device comprises a body and an air purification reaction chamber arranged in the body. The body is provided with an air inlet and an air outlet; a dust removal device is arranged on the portion, close the air inlet, of the air purification reaction chamber; an activated carbon filtration device and a photocatalysis purification device are sequentially arranged on the portion, at back of the dust removal device, in the air purification reaction chamber. The conducting nano TiO2 composite photocatalysis air purification device is characterized in that the photocatalysis purification device is provided with a TiO2 nano-film loaded with nano TiO2 photocatalyst, the thickness of the TiO2 nano-film is 0.1-10mm, the TiO2 nano-film is loaded with preset voltage which ranges from 0.3V to 10V, and a light source generation device is arranged on the side portion of the TiO2 nano-film. The conducting nano TiO2 composite photocatalysis air purification device has the advantages that a negative-ion generation device is integrated at an air outlet end of the device, the negative-ion generation device can further purify purified air and increase the fresh oxygen content in the air when the purified air is exhausted to the air outlet, and therefore the device is beneficial to human health.
Description
Technical field
The utility model relates to a kind of air cleaning unit, specifically a kind of applying nano TiO
2Photocatalysis oxidation technique and absorption, filtering technique combine in the process chamber, the air cleaning unit of polluter in the air in closed space such as in the car.
Background technology
People's most of the time in all one's life is all spent indoor, along with the day by day raising of living standard, the degree of dependence of the vehicles is also increased, and the time in car also increases.Studies show that, the material that the air quality in the confined space such as pollutes in indoor, the car mainly is chemical substance, and formaldehyde, benzene, dimethylbenzene, ammonia, CO, CO are arranged
2, NO
X, SO
2And other VOCs (VOC) etc.The characteristics of air pollutants are complicated components in these confined spaces, and the concentration of pollutant is low, but it is long to act on time of human body, and are very big to the health hazard of human body.
Indoor air cleaner is exactly the device of improving IAQ, it is several that present main air cleaning unit mainly contains negative ion type, ozone oxidation breakdown and photocatalysis formula etc., yet, negative ion type is helpless to bacterial virus and chemical pollutant, the ozone oxidation breakdown is not suitable for open place, and the concentration of ozone is crossed greater than human body also harmful.In recent years, TiO
2VOC in the light catalytic purifying gas phase is a newer research field, and very large development space is arranged.Especially utilize TiO
2As the photocatalytic process of catalyst, reaction condition is gentle, and photodissociation is rapid, and product is CO substantially
2And H
2O removes airborne organic pollution applicable to the confined space such as in indoor, the car, and is applied widely, comprises that the organic matters such as hydrocarbon, alcohol, aldehyde, ketone can both pass through TiO
2Photochemical catalytic oxidation is decomposed into odorless, harmless material, airborne mould, germ etc. also are killed simultaneously, but it also exists certain limitation and deficiency, and be low such as the catalytic efficiency of catalyst, catalytic activity is easy deteriorated etc., makes the clean-up effect of air cleaning unit not good.
The utility model content
For solving the existing problem of above-mentioned prior art, the purpose of this utility model is to provide that a kind of catalytic efficiency is high, catalytic activity good, the application electrical-conductive nanometer TiO of good purification
2Composite photocatalyst oxidation technology and absorption, filtering technique combine in the process chamber, the air cleaning unit of polluter in the air in closed space such as in the car.
To achieve these goals, the utility model provides a kind of electrical-conductive nanometer TiO
2The composite photocatalyst air cleaning unit, comprise body, wherein be provided with the air cleaning reaction chamber of air inlet and gas outlet in the body, the air cleaning reaction chamber is connected with the blower fan that power is provided, wherein the air inlet place of air cleaning reaction chamber is provided with dust arrester, active carbon filtering device, blower fan and smell photocatalysis purifier successively, it is characterized in that: described smell photocatalysis purifier comprises that load has nano-TiO
2The TiO of photochemical catalyst
2Nanometer film, and at described TiO
2Be loaded with predeterminated voltage on the nanometer film, at TiO
2The sidepiece of nanometer film is provided with light source generator.
Preferably, described dust arrester is the nanofiltration net.
Preferably, described TiO
2The thickness range of nanometer film is 0.1～10mm, and air is by certain thickness TiO
2Nanometer film prolongs the time of contact of itself and photochemical catalyst, reacts more abundant.
Preferably, for improving the activity of photochemical catalyst, described TiO
2The predeterminated voltage scope of nanometer application of loads on sealing membrane is 0.3～10V.
Preferably, for improving the air cleaning treatment effect, described light source generator is ultraviolet source.
Preferably, described light source generator is located at TiO
2Around the nanometer film.
Preferably, described air cleaning unit also comprises negative ion generating device, is located at the body outlet side.
Air cleaning process of the present utility model is: the air that blower fan extracts in the confined space enters the air cleaning reaction chamber by air inlet, moving air is removed airborne micronic dust through dust arrester first, when passing through active carbon filtering device, the air of removal micronic dust can remove the peculiar smell such as airborne smoke, musty, oil smoke, enter subsequently smell photocatalysis purifier, flow through TiO
2Be arranged on the one hand TiO during nanometer film
2The ultraviolet killing pathogenic bacteria virus that the ultraviolet source of nanometer film sidepiece sends, be carried out nanometer photocatalytic purification on the one hand: ultraviolet source irradiation has nano-TiO to load
2The TiO of photochemical catalyst
2Nanometer film surface, effectively excitation nano TiO
2Photochemical catalyst produces electronics (e-) and hole (h+), electronics (e-) and hole (h+) can generate the hydroxyl radical free radical (OH) with extremely strong oxidability with water molecules, and hydroxyl radical free radical (OH) resolves into CO to the oxidation operation that enters reaction chamber
2And H
2The little molecule such as O, non-secondary pollution produces simultaneously a large amount of negative oxygen ions under the effect of negative ion generating device, and the air after the purification is discharged by the gas outlet and is reentered confined space, to reach deodorizing, antibiotic, the effect that purifies air.
Description of drawings
Fig. 1 is the air cleaning unit schematic diagram of the present embodiment.
Fig. 2 is the side sectional view of the present embodiment.
The specific embodiment
In order to set forth better technical characterstic of the present utility model and structure, be described in detail below in conjunction with embodiment and accompanying drawing thereof, wherein, identical label represents identical parts all the time.
As depicted in figs. 1 and 2, be provided with air inlet 110 and gas outlet 120 at body 100, air cleaning reaction chamber 300 is located between air inlet 110 and the gas outlet 120, and take blower fan 200 as power source, wherein blower fan 200 is turbofan.When air cleaning unit was worked, under the driving of blower fan 200, air entered air cleaning reaction chamber 300 by the air inlet 110 on the body 100.From air inlet 110, be provided with successively dust arrester 310, active carbon filtering device 320, blower fan 200 and smell photocatalysis purifier 330 in the air cleaning reaction chamber 300, wherein smell photocatalysis purifier 330 be arranged on dust arrester and active carbon filtering device under, the motor 210 that drives blower fan 200 is installed in the rear portion of air cleaning reaction chamber 300.In the present embodiment, dust arrester 310 is the nanofiltration net, not only can high-effective dust-removing, and dust arrester 310 is arranged on air inlet 110 places, this structure also convenient dust arrester 310 is pulled down is cleaned or is changed, and also can not impact miscellaneous part.Behind the impurity such as dust arrester 310 removal micronic dusts, further remove the peculiar smell such as airborne smoke, musty, oil smoke during again through active carbon filtering device 320, air enters smell photocatalysis purifier 330 through blower fan 200 role transformation gas flow direction namely downwards subsequently.In addition, it is exactly to protect carrier of photocatalyst that active carbon filtering device 320 is arranged at smell photocatalysis purifier effect before, prolongs its service life, prevents its performance premature deterioration.
The below introduces first TiO
2Photocatalysis mechanism.
Light-catalyzed reaction refer in the situation that have beche-de-mer without spike and, occur in a kind of photochemical reaction and oxidation-reduction process between photochemical catalyst and the Surface Contact thing thereof, its end product is CO
2, H
2O and other inorganic molecules material.
Under certain illumination condition, if the energy of photon is greater than TiO
2Energy gap, the electronics (e-) on its valence band will be excited, and crosses the forbidden band and enters conduction band, produces corresponding hole (h+) in valence band simultaneously.Photohole has very strong oxidability, and light induced electron has very strong reducing power, and they can discharge heat energy by direct combination, also can be combined with the trap bit on surface or with the electron donor of adsorption/acceptor generation redox reaction.The hole is oxidation of organic compounds directly or indirectly, and generally carry out by hydroxyl radical free radical (OH) indirectly to organic oxidation in the hole.Hydroxyl radical free radical (OH) is a kind of main active material of light-catalyzed reaction, and photochemical catalytic oxidation is played a decisive role.One of theoretical foundation of the present utility model that Here it is.
As shown in Figure 1, smell photocatalysis purifier 330 comprises that being provided with load has nano-TiO
2The TiO of photochemical catalyst
2Nanometer film 332, and at described TiO
2Be loaded with predeterminated voltage on the nanometer film 332, and light source generator is located at TiO
2The sidepiece of nanometer film 332.Light-catalysed excitation source is selected ultraviolet source 331 in the present embodiment, wherein ultraviolet source is arranged on TiO
2Around the nanometer film, in order to can make ultraviolet ray shine in all directions TiO
2 Nanometer film 332 surfaces make light-catalyzed reaction more abundant.
The air that enters smell photocatalysis purifier 330 flows through TiO
2Be arranged on the one hand TiO during nanometer film 332
2The ultraviolet killing pathogenic bacteria virus that ultraviolet source 331 around the nanometer film 332 sends, be carried out nanometer photocatalytic purification on the one hand: ultraviolet source 331 shines load nano-TiO
2The TiO of photochemical catalyst
2Nanometer film 332 surfaces, effectively excitation nano TiO
2Photochemical catalyst produces electronics (e-) and hole (h+), electronics (e-) and hole (h+) can generate the hydroxyl radical free radical (OH) with extremely strong oxidability with water molecules, and hydroxyl radical free radical (OH) becomes CO to the toxic organics matter oxidation Decomposition in the confined space
2And H
2O, non-secondary pollution, the air after the purification is discharged by gas outlet 120, reenters confined space, and then reaches deodorizing, antibiotic, the effect that purifies air.
Preferably, TiO in the present embodiment
2The thickness of nanometer film 332 is set to 0.1～10mm, and air is by certain thickness TiO like this
2 Nanometer film 332 makes it and loads on TiO
2TiO on the nanometer film 332
2Prolong the time of contact of photochemical catalyst, and photocatalysis oxidation reaction is more abundant, strengthens air purification effect.
What be worth emphasizing is, unlike the prior art, is the activity that improves photochemical catalyst, and the present embodiment is also at TiO
2Be loaded with predeterminated voltage on the nanometer film 332, wherein voltage range is 0.3～10V.At TiO
2Nanometer application of loads on sealing membrane predeterminated voltage is actually by the electron distributions in the change system and realizes, increases the separation degree in light induced electron and hole, establishment light induced electron and hole compound, thus greatly improved catalytic activity.
Simultaneously, the present embodiment also is integrated in negative ion generating device 400 in this device, and negative ion generating device 400 is located at the outlet side.Air exhausting after purifying is during to gas outlet 120, and negative ion generating device 400 can further adsorb various viruses, bacterium, eliminates flue dust, decompose organic and inorganic waste gas, improve the purification efficiency of waste gas, and fresh air, the airborne fresh oxygen content of increase, useful health.
The electrical-conductive nanometer TiO that the utility model provides
2The composite photocatalyst air cleaning unit has the apparent advantages such as catalytic efficiency is high, catalytic activity good, good purification.Detect via Environment in Shanghai quality of protection supervision and inspection master station; this device PARA FORMALDEHYDE PRILLS(91,95) and benzene type organic clearance reach 99 ﹪; TOVC (TVOC) clearance reaches 72 ﹪, and total bacterium clearance is 99 ﹪, and comprehensive effectively sterilizing rate is greater than 90 ﹪.Compared to existing apparatus, this device harmful substance clearance improves 30～50 ﹪, and clean-up effect is remarkable.
Although the utility model is specifically described with reference to its exemplary embodiment and is shown, but will be understood by those skilled in the art that, in the situation that does not break away from the spirit and scope of the present utility model that are defined by the claims, can carry out to it various changes of form and details.
Claims (7)
1. electrical-conductive nanometer TiO
2The composite photocatalyst air cleaning unit, comprise body, wherein be provided with the air cleaning reaction chamber of air inlet and gas outlet in the body, the air cleaning reaction chamber is connected with the blower fan that power is provided, wherein the air inlet place of air cleaning reaction chamber is provided with dust arrester, active carbon filtering device, blower fan and smell photocatalysis purifier successively, it is characterized in that: described smell photocatalysis purifier comprises that load has nano-TiO
2The TiO of photochemical catalyst
2Nanometer film, and at described TiO
2Be loaded with predeterminated voltage on the nanometer film, at TiO
2The sidepiece of nanometer film is provided with light source generator.
2. air cleaning unit according to claim 1 is characterized in that, described dust arrester is the nanofiltration net.
3. air cleaning unit according to claim 1 is characterized in that, described TiO
2The thickness range of nanometer film is 0.1～10mm.
4. air cleaning unit according to claim 1 is characterized in that, described TiO
2The predeterminated voltage scope of nanometer application of loads on sealing membrane is 0.3～10V.
5. air cleaning unit according to claim 1 is characterized in that, described light source generator is ultraviolet source.
6. air cleaning unit according to claim 5 is characterized in that, described light source generator is located at TiO
2Around the nanometer film.
7. air cleaning unit according to claim 1 is characterized in that, described air cleaning unit also comprises negative ion generating device, is located at the body outlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097492 CN203249330U (en) | 2013-03-04 | 2013-03-04 | Conducting nano TiO2 composite photocatalysis air purification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320097492 CN203249330U (en) | 2013-03-04 | 2013-03-04 | Conducting nano TiO2 composite photocatalysis air purification device |
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|---|---|
| CN203249330U true CN203249330U (en) | 2013-10-23 |
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|---|---|---|---|
| CN 201320097492 Expired - Fee Related CN203249330U (en) | 2013-03-04 | 2013-03-04 | Conducting nano TiO2 composite photocatalysis air purification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134117A (en) * | 2013-03-04 | 2013-06-05 | 苏章群 | Conductive nano TiO2 composite photocatalytic air purifying device |
-
2013
- 2013-03-04 CN CN 201320097492 patent/CN203249330U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134117A (en) * | 2013-03-04 | 2013-06-05 | 苏章群 | Conductive nano TiO2 composite photocatalytic air purifying device |
| CN103134117B (en) * | 2013-03-04 | 2016-02-24 | 深圳市佳能宝节能环保科技有限公司 | A kind of electrical-conductive nanometer TiO 2composite photocatalyst air cleaning unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20170304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |