CN105031702A - Air purifier with LED ultraviolet light-emitting diode light source - Google Patents

Air purifier with LED ultraviolet light-emitting diode light source Download PDF

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Publication number
CN105031702A
CN105031702A CN201510468690.8A CN201510468690A CN105031702A CN 105031702 A CN105031702 A CN 105031702A CN 201510468690 A CN201510468690 A CN 201510468690A CN 105031702 A CN105031702 A CN 105031702A
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China
Prior art keywords
air purifier
filter screen
led
air
photocatalyst
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Pending
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CN201510468690.8A
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Chinese (zh)
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陈天福
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陈天福
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Priority to CN201510468690.8A priority Critical patent/CN105031702A/en
Publication of CN105031702A publication Critical patent/CN105031702A/en
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Abstract

The invention discloses an air purifier with a novel photocatalyst light source. The air purifier comprises a shell. An air inlet and an air outlet are respectively formed in the shell. An initial filter screen, a fan, a photocatalyst membrane and a secondary filter screen are sequentially arranged from the air inlet to the air outlet. The air purifier further comprises an LED ultraviolet light-emitting diode which is arranged between the fan and the secondary filter screen and arranged opposite to the nanometer photocatalyst membrane, and the LED ultraviolet light-emitting diode serves as a radiation light source of the photocatalyst membrane. The photocatalyst technology is used for the air purifier, the size is smaller, safety performance is higher, the filtering efficiency is higher, and bacteria and viruses can be killed.

Description

There is the air purifier of LED ultraviolet light emitting diode light source
Technical field
The present invention relates to a kind of air purifier, particularly relate to a kind of air purifier of Novel photocatalyst light source.
Background technology
Along with the highly dense of economic development and population, the various pollution in air and harmful components increase day by day, and this pollution comprises dust, formaldehyde, smog, antibacterial, virus etc.People are in order to obtain clean air, and various air purifier arises at the historic moment.
The main operational principle of purification of air has filtration, absorption, decomposition etc.At present, the filtering holes diameter of the drainage screen of the air purifier of market sale is greater than more than 1 micron, can filter granule and the antibacterial of PM2.5, but can not filter formaldehyde, more can not filter the virus only having 0.1 micron.Active carbon is relatively more effective in formaldehyde adsorption, smog, but still limited to the adsorption effect of virus.At present, only have the method for ultraviolet radiation photocatalyst can decomposing formaldehyde, smog etc., and kill bacteria, virus.Can kill the Respirovirus propagated in air, as cold virus and bird flu virus especially.Therefore, in the prior art, in a lot of air purifier, all employ photocatalyst technology, to improve the ability of kill virus and antibacterial and decomposing formaldehyde and other toxic gas.
The general name with the photosemiconductor material of photo-catalysis function of photocatalyst to be a kind of with Nano titanium dioxide be representative.It is coated on substrate surface, under the radiation of ultraviolet light, photocatalyst can produce strong catalytic degradation function, this toxic and harmful in air of effectively degrading, kill various bacteria, and the toxin that antibacterial or fungus discharge can be divided and take off and carry out harmless treatment, the function such as simultaneously also possess deodorization, anti-soil, purify air.Therefore, photocatalyst is widely used in countries in the world.
Want to make photocatalyst can produce strong catalytic degradation function, must ultraviolet radiation be had.In the air purifier that existing market is sold, the Burdick lamp of use is all adopt quartz glass or high boron glass mercury lamp as the light source irradiating photocatalyst, and usual dominant spectral wavelength is at 185nm and 254nm.As shown in Figure 1, air purifier structure conventional in prior art is shown.Here, for hydrargyrum Burdick lamp as the air purifier of the radiation source of photocatalyst, on shell 1.8, be furnished with intake air way 1.1 and air outlet 1.9 in Fig. 1, arrange initial filter screen 1.2, fan 1.3, the nano photo-catalytic film 1.5 be oppositely arranged and hydrargyrum Burdick lamp 1.4, HEPA filter screen 1.6 and active carbon filter screen 1.7 in shell 1.8 inside successively from intake air way to air outlet.In this Burdick lamp, hydrargyrum Burdick lamp 1.4 is radiated on nano photo-catalytic film 1.5, makes it produce catalytic degradation function.
But, in this air purifier, there is following shortcoming: 1. volume is large, causes air purifier not easily miniaturization.2. need high voltage power supply to excite, safety is good not.3. service life is short, usually no longer than 8000 hours.4. frangible, and broken rear generation mercury pollution.5., in order to make exciting light effect of catalyst good, usually use ultraviolet radiation.The dominant spectral wavelength of the hydrargyrum Burdick lamp of photocatalyst is 185nm and 254nm, and wavelength is shorter, more easily produces ozone.Reduce ozone measure although have employed, still have a small amount of ozone to produce.
So air purifier on the market at present, especially needs desktop type and the Vehicular air purifier of diminutive volume, owing to being subject to the restriction of volume, so most air purifier only has filter screen, and does not have photocatalyst.Indoor maximum cold virus is endangered to people, bird flu virus etc. because this air purifier can not be killed, thus be badly in need of that a kind of volume is less, safety is higher, filter efficiency is higher can the air purifier of kill bacteria.
In order to solve the problem, the invention provides a kind of air purifier of small volume of the desktop type, vehicle-mounted type or the desk lamp type that use photocatalyst technology.
Summary of the invention
To achieve these goals, the invention provides a kind of LED ultraviolet LED that adopts as the air purifier of photocatalyst radiation source.Utilize the quartz glass in the existing various air purifier of LED ultraviolet LED replacement or high boron glass hydrargyrum Burdick lamp, irradiate and exciting light catalyst.Make air purifier volume more miniaturization, and, therefore, it is possible to make the air purifier of desktop type, vehicle-mounted type and desk lamp type.
Air purifier in the present invention is furnished with air inlet and air outlet respectively on shell, and be also furnished with initial filter screen, fan, photocatalyst film, secondary filter screen from air inlet successively to air outlet, wherein said air purifier also comprises LED ultraviolet LED or LED ultraviolet LED array, be arranged between described fan and secondary filter screen, positioned opposite with described nano photo-catalytic film, as the radiation source of photocatalyst film, exciting light catalyst, makes it to have very strong decomposition and the function of kill bacteria.
Wherein, described secondary filter screen is independent HEPA filter screen or the HEPA filter screen with the integration of nano photo-catalytic film.Wherein said photocatalyst film is nano-titania photocatalyst film.Wherein, described LED ultraviolet LED is one, and wherein described LED ultraviolet LED is multiple, and the direction of illumination of each described LED ultraviolet LED is different.The wavelength of wherein said LED ultraviolet LED is between 365nm to 400nm.
The driving voltage of wherein said LED ultraviolet LED is 3.2-3.8V.
The lighting angle of wherein said LED ultraviolet LED is 120 degree.
Air purifier of the present invention can: 1. significantly reduce volume, applicable air purifier is easy to miniaturization, can make the air purifier of desktop type or automobile-used type and desk lamp type.2. running voltage is no more than 12V, keeps the state be perfectly safe to carry out work.3. can not be broken, more can not produce mercury pollution.4. service life is very long, and it is unlimited to be considered to.5., when selecting the LED ultraviolet LED of 385nm spectrum as light source, can accomplish not produce ozone completely at work.
Accompanying drawing explanation
Fig. 1 is the air purifier schematic diagram of hydrargyrum Burdick lamp as photocatalyst radiation source, wherein, 1.1 is intake air way, and 1.2 is initial filter screen, and 1.3 is fan, 1.4 is hydrargyrum Burdick lamp, 1.5 is nano photo-catalytic film, and 1.6 is HEPA filter screen, and 1.7 is active carbon filter screen, 1.8 represent shell, and 1.9 is air outlets;
Fig. 2 is the air purifier schematic diagram of LED ultraviolet LED array as photocatalyst radiation source, wherein, 2.1 be intake air way, 2.2 be elementary filter screen, 2.3 be fan, 2.4 be LED ultraviolet LED, 2.5 be nano photo-catalytic film, 2.6 be HEPA filter screen, 2.7 be shell, 2.8 for air outlet;
Fig. 3 is the air purifier schematic diagram of preferred LED ultraviolet LED array as photocatalyst radiation source, wherein, 3.1 be intake air way, 3.2 be elementary filter screen, 3.3 to be fan, 3.4 be LED ultraviolet LEDs, 3.5 are shell, 3.7 are air outlet for the HEPA filter screen, 3.6 with the integration of nano photo-catalytic film.
Detailed description of the invention
With reference to the accompanying drawings air purifier provided by the invention is described in detail.
The air purifier of Fig. 2 for providing in one embodiment of the invention, be furnished with intake air way 2.1 and air outlet 2.8 at shell 2.7, arrange initial filter screen 2.2, fan 2.3, the LED ultraviolet LED 2.4 be oppositely arranged and nano photo-catalytic film 2.5 and secondary filter screen 2.6 in shell 2.7 inside successively from intake air way to air outlet.In this Burdick lamp, LED ultraviolet LED array 2.4 is radiated on nano photo-catalytic film 2.5, makes it produce catalytic degradation function.
As a kind of preferred implementation, nano photo-catalytic film can be arranged in secondary filter screen, make nano photo-catalytic film become wherein one deck of secondary filter screen.Secondary filter screen can be multistorey strainer mesh, and such as, the HEPA filter screen conventional with this area is identical, to strengthen filter effect.Because the function of photocatalyst and active carbon net overlaps, so also active carbon net can be removed, and only use photocatalyst film and HEPA filter screen.Although only show HEPA filter screen in figure as secondary filter screen 2.6, preferably, the secondary filter screen of the air purifier in the present invention still can include active carbon filter screen.
As optimal way, the LED ultraviolet LED array used in the present embodiment can use single light emitting diode, also can use multiple light emitting diode or be made up of array to use multiple light emitting diode.When using multiple light emitting diode, various shape can also be formed and use, coordinating the air purifier of various different profile and structure.
In addition, when using the combination of multiple LED ultraviolet LED, the direction of illumination of each light emitting diode can according to specific needs, be arranged to identical or different.Light emitting diode can be low power, also can be powerful.And in whole light emitting diode matrix, the single power of low power light emitting diode can be identical, also can not be identical.
Owing to using LED light emitting diode, so lower than prior art of the running voltage of air purifier provided by the invention, such as, 12V.So air purifier of the present invention can work under the state be perfectly safe.
Especially, the LED ultraviolet LED in the present embodiment can select ultraviolet various frequency or various wavelength according to actual needs.In order to not produce ozone, usually the emission wavelength of LED ultraviolet LED is controlled between 365nm to 400nm.Meanwhile, activation effect can adopt the intensity of illumination strengthening unit are to make up.Such as, preferably, select wavelength to be the LED ultraviolet LED of 385nm spectrum, purify air while complete or almost completely free ozone can be accomplished.
Number of diodes, the power of diode array change according to the size of ventilation, and spectral wavelength also configures as required.
As mentioned above, going out same hydrargyrum quartz burner must high voltage power supply excite, and this shortcoming cannot overcome.But LED ultraviolet diode only needs the DC voltage of 3.2-3.8V just can driving LED light emitting diode emitting ultraviolet light.
List the various parameters of LED ultraviolet diode as an example below in form, other parameters can be used according to demand in actual applications.
Table 1
Owing to employing LED ultraviolet LED as light source, so compared with the air purifier of prior art, air purifier of the present invention more easily manufactures, and structure is simple, volume is little, reliability is high, safety is good, the life-span is long, energy-conservation and especially do not produce ozone.
Because the volume of air purifier provided by the invention is less, air-purifier designs provided by the invention can be become desktop type, vehicle-mounted type or desk lamp type air purifier, such as primarily of fan, LED ultraviolet LED battle array, nano-titania photocatalyst film and HEPA drainage screen are formed.
Be understandable that, on the basis not departing from above spirit of the present invention, those skilled in the art can also make multiple improvement to the present invention.By the diminutive volume that air purifier provided by the invention can realize, the profile of above-mentioned air purifier and structure can be changed, such as, be designed to the small size air cleaner etc. being suitable for using on vehicle.
Because ultraviolet radiation photocatalyst can make photocatalyst have the ability of extremely strong kill bacteria and virus, so have effect of obvious decomposing formaldehyde and smog as the air purifier of light source using ultraviolet, again in conjunction with HEPA drainage screen, the granule of PM2.5 mono-class can be filtered further.

Claims (8)

1. an air purifier, comprise shell, shell is furnished with air inlet and air outlet respectively, and be also furnished with initial filter screen, fan, photocatalyst film, secondary filter screen from air inlet successively to air outlet, wherein said air purifier also comprises LED ultraviolet LED, be arranged between described fan and secondary filter screen, positioned opposite with described photocatalyst film, as the radiation source of photocatalyst film.
2. air purifier according to claim 1, wherein, described secondary filter screen is independent HEPA filter screen, or has the HEPA filter screen of nano photo-catalytic film integration.
3. air purifier according to claim 1, wherein said photocatalyst film is nano-titania photocatalyst film.
4. air purifier according to claim 1, wherein, described LED ultraviolet LED is one.
5. air purifier according to claim 1, wherein, described LED ultraviolet LED is multiple, and the direction of illumination of each described LED ultraviolet LED is different.
6. air purifier according to claim 1, the wavelength of wherein said LED ultraviolet LED is between 365nm to 400nm.
7. air purifier according to claim 1, the driving voltage of wherein said LED ultraviolet LED is 3.2-3.8V.
8. air purifier according to claim 1, the lighting angle of wherein said LED ultraviolet LED is 120 degree.
CN201510468690.8A 2015-08-04 2015-08-04 Air purifier with LED ultraviolet light-emitting diode light source Pending CN105031702A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105532484A (en) * 2016-01-27 2016-05-04 安徽冠东电子科技有限公司 Livestock farm vent hole sterilizing and protecting device
WO2017162124A1 (en) * 2016-03-22 2017-09-28 陈天福 Air purification lamp remotely controlled by mobile phone application and capable of led uv photocatalysis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201145364Y (en) * 2007-12-24 2008-11-05 上海利贞净化科技有限公司 Circulating wind and fresh air purification sterilizing machine
CN102139122A (en) * 2011-03-31 2011-08-03 陈国祥 Vehicle-mounted air purifier
CN202621022U (en) * 2012-06-07 2012-12-26 江苏恒智纳米科技有限公司 Photocatalyst photocatalytic device
CN203349395U (en) * 2013-06-21 2013-12-18 凯天环保科技股份有限公司 Air purification device in limited sealed space
CN205126944U (en) * 2015-08-04 2016-04-06 陈天福 Air purifier with LED ultraviolet ray LED source

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201145364Y (en) * 2007-12-24 2008-11-05 上海利贞净化科技有限公司 Circulating wind and fresh air purification sterilizing machine
CN102139122A (en) * 2011-03-31 2011-08-03 陈国祥 Vehicle-mounted air purifier
CN202621022U (en) * 2012-06-07 2012-12-26 江苏恒智纳米科技有限公司 Photocatalyst photocatalytic device
CN203349395U (en) * 2013-06-21 2013-12-18 凯天环保科技股份有限公司 Air purification device in limited sealed space
CN205126944U (en) * 2015-08-04 2016-04-06 陈天福 Air purifier with LED ultraviolet ray LED source

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Title
杨继富等: "《农村安全供水技术研究》", 31 July 2015 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105532484A (en) * 2016-01-27 2016-05-04 安徽冠东电子科技有限公司 Livestock farm vent hole sterilizing and protecting device
WO2017162124A1 (en) * 2016-03-22 2017-09-28 陈天福 Air purification lamp remotely controlled by mobile phone application and capable of led uv photocatalysis

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Application publication date: 20151111