CN2619632Y

CN2619632Y - Indoor air purifier

Info

Publication number: CN2619632Y
Application number: CN 03226080
Authority: CN
Inventors: 唐建军; 柴国生; 李荣先; 张明; 彭坚
Original assignee: NANHAI HUAXING PHOTOELECTRIC INDUSTRIAL Co Ltd; Shenzhen Research Institute Tsinghua University
Current assignee: NANHAI HUAXING PHOTOELECTRIC INDUSTRIAL Co Ltd; Shenzhen Research Institute Tsinghua University
Priority date: 2003-05-15
Filing date: 2003-05-15
Publication date: 2004-06-09
Anticipated expiration: 2013-05-15

Abstract

An indoor air purifying device is to provide a photocatalysis indoor air purifying device which is high in catalytic efficiency, great in catalytic activity and good in purifying effect. The technical plan is that: the shell(8) is provided with a current passage which is powered by the blower(7); and dust cleaning apparatuses(1, 2, and 3) are arranged in the front part of the current passage; and the current passage is provided with an active carbon filter device(4) and a photocatalysis purifying area. The utility model is characterized in that the photocatalysis purifying area is provided with a reticulated floamed ceramics(6) which holds the nano TiO2 catalyst; and the floamed ceramics has an ultraviolet lamp(5) at the side face.

Description

A kind of indoor air-purification device

Technical field

This utility model belongs to a kind of device that room air is purified.

Background technology

The room air pollution situation of using owing to the aggravation of atmospheric pollution, indoor decoration and air-conditioner that causes of popularizing more and more causes people's attention at present, and indoor air cleaner is exactly the device that is used for improving IAQ (indoor air quality).It is several that the air cleaner that uses both at home and abroad mainly contains simple mechanical filtering type, electrostatic, chemical (or physics) adsorption-type, anion formula, ultraviolet sterilization formula and photocatalysis formula etc. at present, the depurator of preceding two kinds of forms is eliminated gradually, there is the easily saturated problem of adsorbing material in the adsorption cleaning device, the anion formula it is generally acknowledged to have only the physical action of eliminating flue dust, then powerless to bacterial virus and chemical pollutant, the ultraviolet sterilization formula is powerless to Organic substances such as harmful gas abnormal smells from the patients.In recent years, photocatalysis technology is considered to rising indoor air purification technology, it can thoroughly be removed harmful gas, abnormal smells from the patient and bacterial virus etc. by the method for photochemical catalytic oxidation, but it is as a kind of unit process, also there are certain limitation and deficiency, as the catalyst micropore is easily blocked, catalytic efficiency is lower, the easy deterioration of catalytic activity etc.There is researcher to be used for air cleaning with photocatalysis oxidation technique and activated carbon fiber adsorption technology are integrated now, expectation realizes the in-situ regeneration of scavenging material, improve catalytic efficiency, but because ultraviolet light is difficult to shine the photocatalyst surface that is fixed in activated carbon fiber, do not have photocatalysis, so be difficult to reach the purpose of scavenging material in-situ regeneration.

Summary of the invention

It is good that the technical problems to be solved in the utility model provides a kind of catalytic efficiency height of nano photo catalyzed oxidation, catalytic activity of can adopting, the indoor air-purification device of good purification.

The technical scheme that addresses the above problem is (referring to implementing illustration): being provided with blower fan (7) in housing (8) is the gas channel of power source, the gas channel front portion is provided with dust arrester (1,2,3), be provided with activity carbon filtering device (4) and light catalytic purifying district in the gas channel at dust arrester rear portion, it is characterized in that: be provided with the immobilized foamed ceramics (6) that the solid reticulate structure of nano TiO 2 photocatalyst is arranged in the described light catalytic purifying district, the foamed ceramics sidepiece is provided with Burdick lamp (5).

The order that activity carbon filtering device and light catalytic purifying district are set in gas channel can be exchanged, and preferred version is that activity carbon filtering device is positioned at before the light catalytic purifying district.

Work process of the present utility model is: moving air is removed airborne micronic dust through dust arrester earlier, remove the air of micronic dust and through activity carbon filtering device the time, can remove airborne smoke, musty, abnormal flavour such as oil smoke, be set at the Burdick lamp killing pathogenic bacteria virus of foamed ceramics sidepiece when flowing through the foamed ceramics of solid reticulate structure on the one hand, be carried out nanometer photocatalytic purification on the one hand: Burdick lamp shines photocatalyst surface immobilized on the foamed ceramics, but exciting light catalytic nanoparticles, generation has the free radical activity material of extremely strong oxidability, wide spectrum kill virus pathogenic bacteria also can be resolved into carbon dioxide with airborne noxious pollutant oxidation, the material that water etc. are nonpoisonous and tasteless.

The multiple air purification method of this utility model collection is an one, can be when using ultraviolet lamp disinfection, utilize Burdick lamp to make excitation source simultaneously air is carried out nanometer photocatalytic purification, and the foamed ceramics of employing solid reticulate structure is as the carrier of nano-photocatalyst, it is big that foamed ceramics has porosity, the aperture is big, windage is little, the characteristics that specific surface area is big, make ultraviolet light be easy to shine immobilized photocatalyst surface thereon, and can prolong the length of gas channel and the time of contact of pollutant and nano-photocatalyst greatly, strengthen photocatalysis efficiency, prolong the useful life of catalyst, improve the degraded chemical pollutant, broad-spectrum disinfecting and deodorant efficient.And foamed ceramics rough surface, the photocatalyst nanoparticle is strong adhesion thereon, immobilizedly on the foamed ceramics of solid reticulate structure, improved activity of such catalysts thereby photocatalyst is stablized at a lower temperature, so this utility model can be obtained good air purification effect.

Description of drawings

Fig. 1, this utility model example structure sketch map

Fig. 2, this utility model embodiment disassembled form structural representation

1-is slightly imitated and is imitated the efficient micronic dust drainage screen of micronic dust drainage screen 3-4-active carbon filter net among the micronic dust drainage screen 2-

5-Burdick lamp 6-foamed ceramics 7-blower fan 8-housing 9-bonnet 10-motor

Specific embodiments

Being provided with blower fan 7 in housing 8 is the gas channel of power source, from the gas channel inlet beginning, be provided with thick effect micronic dust drainage screen 1 successively, the middle micronic dust drainage screen 2 of imitating, efficient micronic dust drainage screen 3, active carbon filter net 4, blower fan 7, the gas channel that the light catalytic purifying district is set after the blower fan 7 is an angle of 90 degrees with the anterior gas channel that dust arrester is set, in the gas channel at rear portion, be provided with Burdick lamp 5 successively, the immobilized foamed ceramics 6 that the solid reticulate structure of TiO2 photocatalytic nanometer particle is arranged, the impeller of blower fan 7 is contained in the position that follows closely behind the active carbon filter net 4, the motor 10 of impeller is contained on the bonnet 9, gas channel promptly upwards turns an angle of 90 degrees after blower fan 7 impellers, the light catalytic purifying district is arranged in the gas channel that upwards turns 90 degree.This structure can prevent ultraviolet direct projection micronic dust drainage screen and the drainage screen premature aging that causes.

Above-mentioned thick effect micronic dust drainage screen is general nylon drainage screen, and filtering accuracy is 5～10 μ m, mainly filters bulky grain dust, to prolong the service life of high efficiency particulate air;

Middle effect micronic dust drainage screen is an electrostatic fibrous filter web, filtering accuracy 0.5～1 μ m;

Efficient micronic dust drainage screen for for to 0.3 μ m dust filter efficiency greater than 99.9% enzyme and sterilizing HEPA, be used to filter granule dust, pollen, soot etc.

Above-mentioned three-stage filtration net not only can high-effective dust-removing, and enzyme and sterilizing HEPA wherein also has antibiotic sterilizing function, becomes the hotbed of bacterial virus breeding to prevent filter screen.

This example is arranged on the active carbon filtration district before the light catalytic purifying district, helps protecting carrier of photocatalyst, prolongs its service life, prevents its performance premature deterioration.

Foamed ceramics 5,7 adopts the aluminium oxide foaming to make, and also can adopt silicon dioxide, carborundum or zirconium oxide to make.

This example with the method that TiO2 photocatalytic nanometer particle is fixed in foamed ceramic carrier is: earlier with ultrasonic method with high activity TiO2 nano-photocatalyst stable dispersion in aqueous solution, then this dispersion liquid is sprayed in the foamed ceramics surface, can make nano-photocatalyst under the lower temperature of room temperature to 400 ℃ with higher activity stabilized immobilized in foamed ceramics solid reticulate surface.

The front side and/or the rear side that Burdick lamp are arranged on foamed ceramics can make ultraviolet shine the foamed ceramics surface as much as possible.

This device detects under the photocatalysis test temperature is 30 ℃, the condition of humidity 55%, during start in the air formaldehyde and xylene content be respectively 95.29mg/m ³And 506.53mg/m ³, start shooting and reduce to 2.36mg/m respectively after three hours ³And 0.38mg/m ³, clean-up effect is remarkable.

Claims

1, a kind of indoor air-purification device, being provided with blower fan (7) in housing (8) is the gas channel of power source, the gas channel front portion is provided with dust arrester (1,2,3), be provided with activity carbon filtering device (4) and light catalytic purifying district in the gas channel at dust arrester rear portion, it is characterized in that: be provided with the immobilized foamed ceramics (6) that the solid reticulate structure of nano TiO 2 photocatalyst is arranged in the described light catalytic purifying district, the foamed ceramics sidepiece is provided with Burdick lamp (5).

2, indoor air-purification device according to claim 1 is characterized in that: before the activity carbon filtering device that is provided with in the gas channel is positioned at the light catalytic purifying district.

3, indoor air-purification device according to claim 1 and 2 is characterized in that: the gas channel that the light catalytic purifying district is set is an angle of 90 degrees with the anterior gas channel that dust arrester is set.

4, indoor air-purification device according to claim 1 and 2, it is characterized in that: described dust arrester is: from the gas channel inlet beginning, being provided with filtering accuracy successively is the thick effect micronic dust drainage screen (1) of 5～10 μ m, the efficient micronic dust drainage screen of middle effect micronic dust drainage screen (2), enzyme and sterilizing HEPA (3) of filtering accuracy 0.5～1 μ m.

5, indoor air-purification device according to claim 3, it is characterized in that: described dust arrester is: from the gas channel inlet beginning, being provided with filtering accuracy successively is the thick effect micronic dust drainage screen (1) of 5～10 μ m, the efficient micronic dust drainage screen of middle effect micronic dust drainage screen (2), enzyme and sterilizing HEPA (3) of filtering accuracy 0.5～1 μ m.