CN101371929A - Photocatalysis air purifier using light emitting diode as light source - Google Patents
Photocatalysis air purifier using light emitting diode as light source Download PDFInfo
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- CN101371929A CN101371929A CNA2008101991222A CN200810199122A CN101371929A CN 101371929 A CN101371929 A CN 101371929A CN A2008101991222 A CNA2008101991222 A CN A2008101991222A CN 200810199122 A CN200810199122 A CN 200810199122A CN 101371929 A CN101371929 A CN 101371929A
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Abstract
The invention discloses a photocatalytic air purifier which takes a light-emitting diode as light source, a dust-resistant filter net which is detachable and easy to clean is arranged at an air inlet which is arranged on the lower part of a shell body of a purifier, the dust-resistant filter net which is detachable and easy to clean is arranged at an air outlet which is arranged on the upper part of the shell body; a light-emitting diode array which is taken as the light source and a photocatalytic layer are parallelly arranged in the shell body, the photocatalytic layer is composed of a modified titanium dioxide photocatalyst which is loaded on an activated carbon fiber; the photocatalytic layer of the air purifier simultaneously has the effects of absorption enrichment and photocatalytic degradation of volatile organic compounds, thereby effectively improving the efficiency of the photocatalytic degradation; the light-emitting diode array is adopted as the light source, thereby overcoming the defect of uneven illumination of an ultraviolet lamp tube and being characterized by high optical to electrical conversion rate, long service life and high space and time efficiency, the high-low arrangement of the light-emitting diode array and the photocatalytic layer utilizes the characteristic that gas is raised after heating to realize the effective convection of air without a fan, thereby reducing the energy consumption and simplifying the device.
Description
Technical field
The invention belongs to the air purifying process field, particularly a kind of is the air purifier of the harmful gass such as photocatalytic degradation volatile organic matter of light source based on light emitting diode matrix.
Background technology
Studies show that, volatile organic matter such as benzene series thing, aldehydes, esters, halogenated hydrocarbons etc. have very big chemical toxicity and three more and cause effect, the level of pollution of most of volatile organic matter is outdoor 5～10 times in the indoor environment, sometimes even up to 100 times, in addition in the air antibacterial and virus also endanger indoor occupant health, and people's most of the time is spent indoor, and IAQ (indoor air quality) and health are closely related, so the removal of volatile organic matter has great importance in the room air.
The purification techniques of VOCs (volatile organic matter) mainly contains ventilation, Filtration, absorption method etc. in the room air at present, and said method does not all have the function of organic matter degradation and detoxification, shifts but collect, and periodic replacement and cleaning bring secondary pollution.
The photocatalytic degradation technology has outstanding advantage in this respect.Photohole on the photoactivation quasiconductor valence band, photocatalytic oxidation is because the strong oxidizing property of photohole, as titanium dioxide, its current potential reaches 3.2v, 2.07v than ozone is much higher, and thoroughly degradable organic pollutant makes it permineralization and generates carbon dioxide and water, and actor almost do not have selectivity, so can make many pollutant mineralisings (inorganicization) that are difficult to degrade.Degradation process can be carried out at normal temperatures and pressures, does not need to add chemical reagent, non-secondary pollution, advantage such as easy and simple to handle and receiving publicity.
But when indoor VOCs concentration is low, is difficult to effectively to be enriched to photocatalyst surface and carries out degradation reaction, thereby can not realize the degradation-detoxification of low concentration volatile organic matter effectively.NACF (ACF) is a kind of material of high-quality adsorb organic compound, the volatile organic matter of adsorbable low concentration, but after the absorption that reaches capacity, must regenerate and could recover its absorbability, and regeneration techniques equipment complexity, operating cost height, and produce secondary pollution.
The TiO2/ACF photocatalysis can be degraded to adsorbed organic matter carbon dioxide and water, and has bactericidal action, and is nontoxic to human body, do not need to change regeneration, has a good application prospect.
Existing photocatalysis air assembly, as Chinese invention patent ZL200310100485.3, the disclosed air purifier of utility model patent ZL200620054100.3, the light source that adopts is uviol lamp and supporting high voltage power supply, there are shortcomings such as shared volume is big, photocatalysis layer reception light area is inhomogeneous, service life is not high, and electro-optical efficiency is lower.
The disclosed automobile air purifier of utility model patent ZL200420005893.0 needs fan forced convection, increases the complexity and the energy consumption of device, and the time of staying of air in the clean room fallen short of, and causes the halfway problem of degraded.
Summary of the invention
For solving above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of is the air purifier of the photocatalytic degradation volatile organic matter of light source based on light emitting diode.
The present invention is achieved through the following technical solutions: described air purifier comprises the housing that has air inlet and gas outlet, and described housing bottom is provided with air inlet, gas outlet, housing top; Alternately be arranged in parallel as the light emitting diode matrix of light source, load on the photocatalysis layer that the modified titanium dioxide photocatalyst on the NACF constitutes in enclosure interior.
In order to realize the present invention better, described air inlet and gas outlet are provided with detachably, the dust-separation filter screen of easy cleaning, are used for intercepting air larger particles and fiber etc.; For satisfying the air of the different pollution levels of degraded, the inside of described depurator, the photocatalysis layer of the different numbers of plies can be set as required, photocatalysis layer and light emitting diode matrix alternately be arranged in parallel, equidistant between every two-layer photocatalysis one group of light emitting diode matrix is set, distance is 0.5～5cm.Design can make this air purifier photocatalysis layer that volatile organic matter is had the effect of adsorption and enrichment and photocatalytic degradation simultaneously like this, has effectively improved the efficient of photocatalytic degradation; Adopt light emitting diode matrix to replace ultraviolet lamp tube as light source, has electric light conversion ratio height, the characteristics that life-span is long, spatiotemporal efficiency is high, light emitting diode matrix and photocatalysis layer are just arranged, the gas rising realized cross-ventilation after utilization was heated, and need not adopt the fan forced air convection, had increased the time of staying of gas in the clean room, reduce energy consumption, simplified device.
The present invention has also comprised the preparation photocatalyst and catalyst cupport has been arrived porous conductive material, adopts methods such as electrophoresis, sol-gel that the catalyst of requirement is fixed on the porous conductive material.Increase when the present invention impels air by photocatalysis layer and contact to react fully with catalyst.
Energy level difference between titanium dioxide valence band and conduction band, determined its absorption to be in the black light district, therefore, the light source of normal light catalyst is selected the light emitting diode of blue outside line for use, the present invention can be by carrying out modification with titanium dioxide, make absorption spectrum move to visible region, therefore also can select the visible light emitting diode of specific wavelength for use.Titanium dioxide can be through nonmetal as nitrogen, metal such as platinum doping vario-property.
Carrier with microcellular structure high surface, the Organic substance in the energy preferential adsorption fluid improves degradation efficiency greatly.
The present invention compared with prior art, have following advantage and beneficial effect: this air purifier has absorption simultaneously to volatile organic contaminant and removes and photocatalytic Degradation, and titanium dioxide can improve as nitrogen, metal such as platinum doping back photocatalysis efficiency greatly through nonmetal, can replace the light source of ultraviolet lamp tube by light emitting diode matrix as light-catalyzed reaction, significantly improved the service life of electric light transformation efficiency and light source, simplify reaction unit, improved the spatiotemporal efficiency of air purifier greatly.
In from air, removing organic pollution, can remove Organic substance, pathogenic bacteria of airborne aldehyde, aromatic series and so on etc. according to reactor adapted of the present invention.
Therefore air purifier of the present invention can be widely used in industry and civilian owing to have excellent catalytic activity and the structure design.
Air purifier of the present invention can long-time steady operation.
As mentioned above, use this air purifier to have the advantage of removing volatile organic contaminant in the air, although described the present invention with reference to some preferred embodiment, those skilled in the art should be realized that, do not departing under the scope prerequisite of spirit of the present invention, those skilled in the art can make various improvement and change to air purifier of the present invention, its manufacture method, if therefore these improvement and change then present invention includes these improvement and change in claims and equivalent scope.
This depurator can active adsorption enrichment and the airborne volatile organic matter of original position photocatalytic degradation simultaneously, handles spatiotemporal efficiency height, energy consumption is low, the life-span is long characteristics.
The effect of volatile organic contaminant in the air purifier degraded air in the preferred working example of the following description of the present invention.
Description of drawings
Fig. 1 is the structural representation of a kind of specific embodiment of air purifier of the present invention.
Objects and advantages of the present invention can more fully be understood from below in conjunction with accompanying drawing the present invention is described in further detail.
The specific embodiment
The generality description and the following detailed description that are appreciated that the front all are exemplary and explanat, are used for claims of the present invention are further explained.But embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, air purifier of the present invention comprises that the housing 1, the lower housing portion that have the air inlet gas outlet are provided with air inlet 2, air inlet is equipped with detachably, the dust-separation filter screen 3 of easy cleaning, housing top sets out QI KOU 4, the gas outlet is equipped with detachably, the dust-separation filter screen 3 of easy cleaning, is used for intercepting air larger particles and fiber etc.; For satisfying the air of the different pollution levels of degraded, inside, described clean room can be provided with the photocatalysis layer 5 of the different numbers of plies as required, and photocatalysis layer and light emitting diode matrix 6 be arranged in parallel, equidistant between every two-layer photocatalysis one group of light emitting diode matrix is set, distance is 0.5～2cm.Light emitting diode matrix and photocatalysis layer just are staggered, and utilize the back gas that is heated to rise and realize cross-ventilation.
Embodiment 2:
As shown in Figure 1, technological process in the air purifier of the present invention is as follows: after the light emitting diode energising, air-flow rose after gas was heated, make air suck depurator through air inlet, bigger particulate matter and fiber etc. are removed by the dust-separation strainer filtering in the air, inside, clean room is provided with the modifying titanium dioxide/NACF or the molecular sieve photocatalysis layer of 4 floor height adsorptivities, one group of light emitting diode matrix is set between every two-layer photocatalysis layer, under ultraviolet light and visible light radiation that light emitting diode matrix sends, being adsorbed on pollutant on the photocatalysis layer carries out photocatalytic degradation and becomes nontoxic material (carbon dioxide, water and simple inorganic matter), cleaned air passes is directly discharged through the gas outlet.
Claims (6)
1. photocatalysis air purifying device that light emitting diode is a light source, described air purifier comprises the housing that has inlet, outlet, it is characterized in that: described lower housing portion is provided with air inlet, be provided with the gas outlet on housing top, be provided with photocatalysis layer and the light emitting diode matrix that alternately is arranged in parallel in enclosure interior; Described photocatalysis layer is with activated carbon fiber-loaded modifying titanium dioxide, and light emitting diode matrix is light-catalysed light source.
2. air purifier as claimed in claim 1 is characterized in that: the air inlet of described depurator and gas outlet are separately installed with the dust-separation filter screen.
3. air purifier as claimed in claim 1 is characterized in that: the inside of described purifier shell is provided with 2～10 layers photocatalysis layer.
4. air purifier as claimed in claim 1 is characterized in that: the carrier of the photocatalyst of described depurator is NACF or molecular sieve.
5. air purifier as claimed in claim 1 is characterized in that: between described photocatalysis layer is whenever two-layer a light emitting diode matrix is set.
6. air purifier as claimed in claim 1 is characterized in that: the photocatalysis layer of described depurator and light emitting diode matrix are equidistant to be arranged in parallel, and distance is 0.5～5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101991222A CN101371929A (en) | 2008-10-14 | 2008-10-14 | Photocatalysis air purifier using light emitting diode as light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101991222A CN101371929A (en) | 2008-10-14 | 2008-10-14 | Photocatalysis air purifier using light emitting diode as light source |
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| CN101371929A true CN101371929A (en) | 2009-02-25 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466145A (en) * | 2010-11-10 | 2012-05-23 | 吴明番 | Light-emitting diode (LED) photocatalyst surface light source device |
| US20130142692A1 (en) * | 2010-10-06 | 2013-06-06 | Mohamed H. Tarifi | Methods and apparatus for purification of air |
| RU2545360C1 (en) * | 2013-09-23 | 2015-03-27 | Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук | Method for combined plasma-photochemical air purification |
| RU2545379C1 (en) * | 2013-09-23 | 2015-03-27 | Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук | Method for plasma-photochemical air purification and apparatus therefor |
| CN108344055A (en) * | 2017-01-24 | 2018-07-31 | 三星电子株式会社 | Electronic device with photocatalytic filter and its control method |
| CN108481633A (en) * | 2018-05-16 | 2018-09-04 | 杨建怀 | A kind of environmentally friendly cooling device for rubber product process |
| CN108939908A (en) * | 2018-08-02 | 2018-12-07 | 褚福友 | A kind of photodissociation oxidation fission VOC processing unit |
| CN109012160A (en) * | 2018-08-24 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of device and method and its application handling oil field indoor volatile organic compounds |
| CN109381996A (en) * | 2018-11-28 | 2019-02-26 | 孟庆华 | Hot-fluid drives smell photocatalysis purifier |
| EP3643395A1 (en) * | 2018-10-17 | 2020-04-29 | The Boeing Company | Aircraft air purification and volatile organic compounds reduction unit comprising a photocatalyst activated by ultraviolet light emitting diodes |
| CN111279142A (en) * | 2018-10-05 | 2020-06-12 | 首尔伟傲世有限公司 | Air purification module and refrigerator with same |
| CN115784520A (en) * | 2022-12-15 | 2023-03-14 | 华侨大学 | Tubular light degradation device based on optical fiber light guide |
-
2008
- 2008-10-14 CN CNA2008101991222A patent/CN101371929A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130142692A1 (en) * | 2010-10-06 | 2013-06-06 | Mohamed H. Tarifi | Methods and apparatus for purification of air |
| CN102466145A (en) * | 2010-11-10 | 2012-05-23 | 吴明番 | Light-emitting diode (LED) photocatalyst surface light source device |
| RU2545360C1 (en) * | 2013-09-23 | 2015-03-27 | Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук | Method for combined plasma-photochemical air purification |
| RU2545379C1 (en) * | 2013-09-23 | 2015-03-27 | Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук | Method for plasma-photochemical air purification and apparatus therefor |
| CN108344055A (en) * | 2017-01-24 | 2018-07-31 | 三星电子株式会社 | Electronic device with photocatalytic filter and its control method |
| US11058790B2 (en) | 2017-01-24 | 2021-07-13 | Samsung Electronics Co., Ltd. | Electronic apparatus having photocatalytic filter |
| CN108481633A (en) * | 2018-05-16 | 2018-09-04 | 杨建怀 | A kind of environmentally friendly cooling device for rubber product process |
| CN108939908A (en) * | 2018-08-02 | 2018-12-07 | 褚福友 | A kind of photodissociation oxidation fission VOC processing unit |
| CN108939908B (en) * | 2018-08-02 | 2020-09-18 | 褚福友 | Photodissociation oxidation fission VOC processing apparatus |
| CN109012160A (en) * | 2018-08-24 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of device and method and its application handling oil field indoor volatile organic compounds |
| US11931490B2 (en) | 2018-10-05 | 2024-03-19 | Seoul Viosys Co., Ltd. | Air purification module and refrigerator comprising the same |
| CN111279142B (en) * | 2018-10-05 | 2023-05-23 | 首尔伟傲世有限公司 | Air purification module and refrigerator with same |
| CN111279142A (en) * | 2018-10-05 | 2020-06-12 | 首尔伟傲世有限公司 | Air purification module and refrigerator with same |
| US10981102B2 (en) | 2018-10-17 | 2021-04-20 | The Boeing Company | Aircraft air purification and volatile organic compounds reduction unit |
| EP3643395A1 (en) * | 2018-10-17 | 2020-04-29 | The Boeing Company | Aircraft air purification and volatile organic compounds reduction unit comprising a photocatalyst activated by ultraviolet light emitting diodes |
| CN109381996A (en) * | 2018-11-28 | 2019-02-26 | 孟庆华 | Hot-fluid drives smell photocatalysis purifier |
| CN115784520A (en) * | 2022-12-15 | 2023-03-14 | 华侨大学 | Tubular light degradation device based on optical fiber light guide |
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Application publication date: 20090225 |