CN211903124U

CN211903124U - High-efficiency TiO2Photocatalysis indoor air purifier

Info

Publication number: CN211903124U
Application number: CN201921302306.7U
Authority: CN
Inventors: 杨家友; 郑棚洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-11-10
Anticipated expiration: 2029-08-02

Abstract

High-efficiency TiO₂A photocatalytic indoor air purifier has a case with air inlet at its bottom and air outlet at its top, and is composed of pre-filtering net, efficient filtering net and low-output superoxide (O)₃) Generator and TiO₂A photocatalytic reactor, a negative oxygen ion generator and a high-flow turbine fan. TiO 2₂The main chamber of the photocatalytic reactor is full of TiO load₂The active carbon particles of nano particles and the mixture of ultraviolet light conductor particles form a photocatalytic reaction body, light source supports are arranged on two sides of the main cavity, and ultraviolet light LED (light-emitting diode) paster lamp beads are distributed on the supports. When the machine works, indoor polluted air is filtered by the air inlet, the pre-filtering net and the high-efficiency filtering net to remove particle pollutants, namely TiO, with the particle size of more than 0.3mm₂Photocatalytic reactor for treating superoxide (O)₃) The purified air flow carries the negative oxygen ion group to enter the indoor space, and the indoor air quality is effectively improved.

Description

High-efficiency TiO2Photocatalysis indoor air purifier

Technical Field

The utility model belongs to the technical field of air purification, concretely relates to high-efficient TiO₂Photocatalysis indoor air purifier.

Background

Long-term studies have demonstrated that breathing is the major route for people to come into contact with air pollution, and 68% of the diseases are caused by air pollution in the residential environment. The indoor pollutants are complicated in composition and mainly comprise four categories of suspended particulate matters, pathogenic microorganisms, harmful chemical gases, radioactive gases and decay branches thereof. Indoor air pollutants can be categorized into two broad categories, namely suspended particle pollutants (including aerosol particles) and harmful gaseous pollutants, by considering that various microorganisms and radioactive gas radon and decay daughter thereof are mainly attached to solid and liquid particles (also called aerosol) suspended in the air to be transmitted in the air. From economic and practical considerations, people usually use mechanical filtration to remove suspended particulate pollutants, and use adsorption and photocatalytic decomposition to remove harmful gaseous pollutants. The adsorption method is only temporary accumulation and storage and cannot radically remove harmful gaseous pollutants, and the photocatalysis method can effectively decompose the gaseous pollutants into harmless CO₂And H₂However, in practical application, the method is not proper, so that the practical effect is not satisfactory. Years of research at home and abroad show that titanium dioxide (TiO)₂) The key points of the nano particle photocatalysis process are as follows: no. 1 is ultraviolet light irradiation TiO with wavelength less than or equal to 387.5nm₂The nano particles enable the nano particles to generate photogenerated holes and photogenerated electrons; HO, wherein the photo-generated holes and photo-generated electrons migrate to the surface of the particle and attach to the surface of the particle₂、O₂The molecules generate a series of oxidation-reduction reactions to generate an oxidant cluster mainly containing hydroxyl radicals (. OH) and generate an oxidative decomposition reaction with gaseous pollutant molecules attached to the surfaces of the particles, so that the gaseous pollutant molecules are degraded into CO₂And H₂O, and the like. In practical application, one aims to use nano-sized TiO₂The particles being fixed on a carrier material, usually with the addition of organic or inorganic binders, and with the addition of a large number of other materialsThe particles, in fact particles of these added binder molecules and other materials, coat or mask the TiO₂Nanoparticles that do not receive much or even all light when irradiated, thus generating fewer photogenerated holes and electrons, and also resulting from the encapsulation and shielding of HO from the gas stream₂、O₂And gaseous contaminant molecules are rarely or hardly present in TiO₂The surface of the nano-particles is attached or aggregated to make TiO₂The oxidative decomposition reaction on the surface of the nanoparticles is rare or difficult to occur, so that TiO₂The photocatalytic effect of (2) is little or difficult to exert. TiO introduced on the net for hundreds of years₂The actual value of the photocatalytic air purifier on the purification rate of gaseous pollutants is as low as 3 percent, and the actual value is not more than 5 percent after improvement, so that TiO can be seen₂The practical application of the photocatalytic effect is not really solved. The utility model discloses it is exactly to this problem new solution has been proposed.

The utility model provides a high-efficiency TiO₂The new scheme of photocatalytic indoor air purifier can eliminate suspended particle pollutant from air while decomposing gaseous pollutant into harmless CO₂And H₂O, can also kill pathogenic viruses and germs, and has economic and practical popularization and application values.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: high-efficiency TiO₂A photocatalytic indoor air purifier is characterized in that a flat rectangular case made of environment-friendly ABS plastic, an air inlet is formed by an array of phi 2.5mm through holes densely distributed on the periphery of the lower portion of the case, an air outlet is formed by an array of thin strip through holes densely distributed on the top surface of the case, a guide pavilion cover with the height of 10mm is constructed on the top surface of the case, the air outlet is uniformly sprayed to the periphery, and a pre-filter screen, an efficient filter screen and superoxide (O) are sequentially arranged on the case from bottom to top₃) Generator and TiO₂The device comprises a photocatalytic reactor, a negative oxygen ion generator and a high-flow turbine fan, wherein an air outlet is arranged on the fan, and the pre-filtering net, the high-efficiency filtering net and the TiO are arranged on the pre-filtering net₂The photocatalytic reactor is inserted and installed from the back of the case by an insertAnd 4 universal rollers are arranged at the bottom of the case, so that the machine can move conveniently.

The pre-filtering net is a stainless steel net or a nylon fiber net, and the high-efficiency filtering net is a common HEPA filtering net or an electrostatic electret filtering net.

The TiO is₂The photocatalysis reactor is a flat rectangular cavity made of environment-friendly ABS plastic, a main cavity grid column a and a main cavity grid column b made of transparent quartz glass or colorless transparent organic glass are respectively constructed on two opposite large surfaces of a central main cavity chamber, a transparent quartz glass fiber net a and a transparent quartz glass fiber net b are respectively arranged on the inner side of each grid column, a main cavity chamber mirror aluminum sheet is arranged on the inner side surface of the other periphery of the main cavity chamber, an irradiation light source bracket a and an irradiation light source bracket b are respectively arranged on the two outer sides of the main cavity chamber, a light source bracket grid column a and a light source bracket grid column b are respectively constructed on one surface of two pairs of irradiation light source brackets far away from the main cavity chamber, each light source bracket grid column faces one surface of the main cavity chamber, an LED patch type lamp bead a group and a patch type lamp bead b group with the ultraviolet light wavelength of 365nm are respectively arranged on the cross point of the selected fence, and power wires of each patch type lamp beads in series connection are arranged along the corresponding fence strips, the power line is respectively connected with a power input socket a and a power input socket b which are arranged on one side of the corresponding light source bracket, and 4 inner side surfaces of each light source bracket are also provided with a light source bracket mirror aluminum sheet a and a light source bracket mirror aluminum sheet b.

The TiO is₂TiO loaded in the main chamber of the photocatalytic reactor₂The active carbon particles of the nano particles and the ultraviolet light conductor particles are uniformly mixed according to the total volume ratio of 3: 1-5: 3 to form a photocatalytic reaction body. The TiO is₂The nano particles are anatase type TiO₂The particle size is 5 nm; the active carbon particles are cylindrical sections or spherical beads with the diameter of 3mm, which are prepared from high-quality coconut shell active carbon; the ultraviolet light guide body particles are cylindrical sections or spherical beads with the diameter phi of 4mm to 5mm made of transparent quartz glass or colorless transparent organic glass, and are excellent or better light guide bodies of ultraviolet light.

The TiO is₂Ultraviolet light irradiates on two sides of the main cavity of the photocatalytic reactor, and the grating bars and the fiber mesh of the main cavity are almost not damaged orThe light source bracket has total reflection of light, so that the external illumination light can enter the main chamber concentratedly, and no other matter particles or molecular groups are wrapped and shielded by the guide of the light guide body in the main chamber and the total reflection of the mirror aluminum sheets in the main chamber, so that the TiO in the main chamber can be absorbed by the light guide body₂The nano particles can uniformly and fully absorb ultraviolet irradiation light energy entering the main chamber, so that a large number of photo-generated holes and photo-generated electrons are continuously generated, and the TiO is continuously ensured₂A series of redox reactions occur on the surface of the nanoparticles.

The TiO is₂The photocatalytic reactor is provided with superoxide (O)₃) Ion generator, said superoxide (O)₃) The generator is a miniature open type superoxide ion generator, the superoxide generation rate of the superoxide ion generator is less than or equal to 100 mg/h, and O is generated during the work₃Into TiO₂Photocatalytic reactor, adding TiO₂The generation amount of hydroxyl free radicals (. OH) on the surfaces of the nanoparticles is increased, thereby enhancing the TiO₂And (4) a photocatalytic effect.

An AC220V power button switch and a power indicator lamp are arranged on the right upper part of the front face of the case, and an AC220V power input socket and two ultraviolet LED lamp power output sockets are arranged on the left lower part of the back face. The AC220V power input socket is connected with the input end of the power converter at the bottom of the case and the middle layer of superoxide (O) in the case through leads₃) The power input end of the generator, the power input end of the negative oxygen ion generator on the upper layer and the power input end of the high-flow turbofan are connected, two groups of ultraviolet LED power output ends of the power converter are respectively connected with the access ends of two ultraviolet LED lamp power output sockets a and two power output sockets b on the back of the case through leads in the case, and the DC5V output end of the power converter is connected with the LED direct plug-in lamp beads of the power indicator lamp through a current limiting circuit. The ultraviolet LED power output socket a and the power output socket b on the back of the case are respectively connected with a power line with power plugs at two ends and TiO outside the case₂Two power input sockets a and two power input sockets b of the photocatalytic reactor are respectively connected.

The utility model is connected in during operationThe AC220V power supply, power switch, power indicator light, machine function region start, indoor polluted air is firstly filtered by air inlet and pre-filter screen at the lower part of the machine case to remove hair, flying floc and particles with larger particle size, then suspended particles with particle size of more than 0.3mm are removed by high efficiency filter screen, and then the air is treated by superoxide (O)₃) Ion-promoted TiO₂The photocatalytic reactor decomposes various gaseous pollutants to kill pathogenic viruses and germs, and the purified air flow carries the negative oxygen ion groups generated by the negative oxygen ion generator to enter the indoor space through the air outlet, so that the indoor air quality is effectively improved.

Drawings

FIG. 1 is a schematic view of the overall appearance of the present invention;

FIG. 2 shows TiO of the present invention₂The overall appearance of the photocatalytic reactor is shown schematically;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 1;

fig. 4 is a rear view of the enclosure of fig. 1; FIG. 5 is a side view of a top pod cover of the enclosure of FIG. 1;

in the figure: 1. a chassis; 2. an air inlet; 3. an air outlet; 4. a pavilion cover; 5. a universal roller; 6. pre-filtering the net; 7. a high-efficiency filter screen; 8. superoxide (O)₃) A generator; 9. TiO 2₂A photocatalytic reactor; 9-1, a main chamber; 9-2a, main chamber grid column a; 9-2b, main chamber grid column b; 9-3a, a transparent quartz glass fiber net a; 9-3b, a transparent quartz glass fiber net b; 9-4, mirror aluminum sheets in the main chamber; 9-5a, an irradiation light source bracket a; 9-5b, an irradiation light source bracket b; 9-6a, a light source support grid column a; 9-6b, a light source support grid column b; 9-7a, a light source bracket mirror aluminum sheet a; 9-7b, a light source bracket mirror aluminum sheet b; 9-8a and a patch type lamp bead group a; 9-8b and a patch type lamp bead group b; 9-9a, a power input socket a; 9-9b, a power input socket b; 9-11 Supported TiO₂Active carbon particles of nano particles, 9-12 ultraviolet light guide body particles; 10. a negative oxygen ion generator; 11. a high flow turbine fan; 12. an AC220V power input socket; 13. a power converter; 14-1, power output socket a; 14-2, a power output socket b; 15. a power button switch; 16. and a power indicator lamp.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings

Example 1

High-efficiency TiO₂A photocatalysis indoor air purifier is shown in the attached drawing, and comprises a flat rectangular case 1 made of environment-friendly ABS plastic, an air inlet 2 is arranged at the lower part of the case, an air outlet 3 is arranged at the top surface of the case, a guide pavilion cover 4 with the thickness of 10mm is arranged at the top of the case, and 4 universal rollers 5 are arranged at the bottom of the case. The machine case is provided with a pre-filtering screen 6 of a stainless steel screen and an HEPA high-efficiency filtering screen 7 from bottom to top, and the generation rate of superoxide (O) is less than or equal to 100 mg/hour₃) Generator 8, TiO₂The device comprises a photocatalytic reactor 9, a negative oxygen ion generator 10 and a high-flow turbine fan 11, wherein an air outlet 3 is arranged on the fan 11. The left lower part of the back of the case is provided with an AC220V power input socket 12, the bottom of the case is provided with a power converter 13, the left lower part of the back of the case is provided with an ultraviolet LED power output socket a14-1 and a power output socket b14-2, and the right upper part of the front of the case is provided with an AC220V power switch 15 and a power indicator lamp 16.

The TiO is₂The photocatalysis reactor is a flat rectangular cavity made of environment-friendly ABS plastic, two large faces of a central main cavity 9-1 are provided with a grid column a9-2a and a grid column b9-2b of transparent quartz glass, the inner side of each grid is provided with a transparent quartz glass fiber net a9-3a and a transparent quartz glass fiber net b9-3b, the inner side surface of the periphery of the main cavity is provided with mirror aluminum sheets 9-4, the outer two sides of the main cavity are respectively provided with an irradiation light source bracket a9-5a and an irradiation light source bracket b9-5b, the side width of each light source bracket is 45mm, one face of each light source bracket, which is far away from the main cavity, is provided with a light source bracket grid column a9-6a and a light source bracket grid column b9-6b, one face of each light source bracket fence faces the main cavity, in order to ensure the uniformity of light irradiation at the selected grid intersection point, the LED lamp is provided with an ultraviolet LED patch type lamp bead a group 9-8a and a patch type lamp bead b group 9-8b, wherein the ultraviolet wavelength of the lamp beads is 365nm, the power is 1-3W, and the half-power angle is 60 degrees. And power lines of all groups of ultraviolet light patch type lamp beads connected in series on the grid bars of all the brackets are distributed along the grid bars, and the power lines are respectively connected with an input power socket a9-9a and an input power socket b9-9b at one side of the corresponding light source bracket. Of light source holdersThe 4 inner side surfaces are distributed with a light source bracket mirror aluminum sheet a9-7a and a light source bracket mirror aluminum sheet b9-7 b.

The main chamber 9-1 is filled with TiO load₂The active carbon particles 9-11 of the nano particles and the ultraviolet light conductor particles 9-12 are uniformly mixed according to the total volume ratio of 5: 3 to form a photocatalytic reaction body. The TiO is₂The nano particles are anatase type TiO₂The particle size is 5 nm; the activated carbon particles are cylinder sections or ball beads with the diameter of phi 3mm, which are made of high-quality coconut shell activated carbon; the ultraviolet light guide particles 9-12 are cylindrical sections or balls with phi 4 mm-phi 5mm made of transparent quartz glass.

The AC220V input socket at the lower part of the back of the case is connected with the input end of the power converter 13 at the bottom and the middle part of the super oxide (O) in the case through wires₃) The power input end of the generator 8, the power input end of the negative oxygen ion generator 10 at the upper part and the power input end of the high-flow turbine fan 11 are connected. Two groups of ultraviolet LED power output ends of the power converter 13 are respectively connected with the connecting ends of a power output socket a14-1 and a power output socket b14-2 at the back of the case through connecting wires in the case, and the power output socket a14-1 and the power output socket b14-2 are respectively connected with a power wire with a power plug at two ends and TiO outside the case₂The power input socket a9-9a and the power input socket b9-9b on the light source bracket of the photocatalytic reactor are connected.

In the embodiment, the chassis is connected with an AC220V power supply, a power switch is turned on, a power indicator lamp is turned on, each functional area of the chassis is started to work, indoor polluted air is firstly filtered by an air inlet 2 and a pre-filtering net 6 to remove hair, flying floc and suspended particles with larger particle size, then is filtered by a high-efficiency filtering net 7 to remove suspended particles with particle size of more than 0.3nm, and then is subjected to superoxide (O) filtration₃) Ion-promoted TiO₂The photocatalytic reactor 9 decomposes various gaseous pollutants to kill pathogenic viruses and germs. The purified air flow carries the negative oxygen ion groups generated by the negative oxygen ion generator 10 to enter the indoor space through the air outlet 3, and the indoor air quality is effectively improved.

Example 2

High-efficiency TiO₂Photocatalytic indoor air purifier, as shown in the attached figures, shape, structure and connection mode thereof and embodiment1, except the following 4 points, the other parts are identical. The difference is as follows:

1. the pre-filtering net 6 is a nylon fiber net;

2. the high-efficiency filter screen 7 is an electrostatic electret filter screen;

3. the main chamber grid column a9-2a and the main chamber grid column b9-2b are made of colorless transparent organic glass;

4. the ultraviolet light guide particles 9-12 are made of colorless transparent organic glass.

The above two embodiments are only examples of the present invention, and are not limitations of the present invention. The limited scope of the utility model is shown in the claims of the utility model.

Claims

1. High-efficiency TiO₂The photocatalysis indoor air purifier is characterized in that a flat rectangular case (1) made of environment-friendly ABS plastic, an air inlet (2) is formed by an array of phi 2.5mm through holes densely distributed on the periphery of the lower part of the case, an air outlet (3) is formed by an array of thin strip through holes densely distributed on the top surface of the case, a guide pavilion cover (4) with the height of 10mm is constructed on the top surface of the case, a pre-filtering net (6), a high-efficiency filtering net (7) and superoxide (O) are arranged on the case from bottom to top₃) Generator (8), TiO₂The device comprises a photocatalytic reactor (9), a negative oxygen ion generator (10) and a high-flow turbine fan (11), wherein an air outlet (3) is formed in the fan (11), and the pre-filtering net (6), the high-efficiency filtering net (7) and TiO are arranged on the pre-filtering net (6)₂The photocatalytic reactor (9) is inserted from the back of the case in a plug-in mode, and 4 universal rollers are mounted at the bottom of the case.

2. The high efficiency TiO 2 according to claim 1₂Photocatalysis indoor air purifier, characterized by: the TiO is₂The photocatalytic reactor (9) is a flat rectangular cavity made of environment-friendly ABS plastic, two opposite large surfaces of a central main cavity (9-1) are respectively provided with a main cavity grid column a (9-2a) and a main cavity grid column b (9-2b) made of transparent quartz glass or colorless transparent organic glass, and the inner sides of the grid columns are respectively provided with a transparent quartz glass fiber net a (9-3a) and a transparent quartz glass fiber net b (9-2b)-3b), the inner side of the other periphery of the main chamber (9-1) is provided with main chamber mirror aluminum sheets (9-4), two sides outside the main chamber (9-1) are respectively provided with an irradiation light source support a (9-5a) and an irradiation light source support b (9-5b), one side of two pairs of irradiation light source supports far away from the main chamber (9-1) is respectively provided with a light source support grid column a (9-6a) and a light source support grid column b (9-6b), one side of each light source support grid column facing the main chamber (9-1) is respectively provided with an LED patch type lamp bead a group (9-8a) and a patch type lamp bead b group (9-8b) with ultraviolet light wavelength of 365mm at the selected grid intersection point, the power line connected with the patch type lamp beads in series is arranged along the grid columns, and the power line and the corresponding power input socket a (9-9a) and the electric power input socket (9-9a) and the electric socket arranged on one side of The source input sockets b (9-9b) are respectively connected, and 4 inner side surfaces of each light source bracket are also provided with a light source bracket mirror aluminum sheet a (9-7a) and a light source bracket mirror aluminum sheet b (9-7 b).

3. The high efficiency TiO of claim 1₂Photocatalysis indoor air purifier, characterized by: the TiO is₂The photocatalytic reactor is provided with superoxide (O)₃) Ion generator, said superoxide (O)₃) The ion generator is a miniature open type superoxide ion generator, and the superoxide generation rate of the superoxide ion generator is less than or equal to 100 mg/h.