CN202289869U - Photocatalyst electronic filter air purification device - Google Patents

Abstract

The utility model relates to a photocatalyst electron filter screen air purification device, it includes: a power supply unit, a conductor, a fiber carrier and a photocatalyst. The conductor is connected with the anode of the power supply unit. The fiber carrier contacts the electrical conductor. The photocatalyst is arranged on the surface of the fiber carrier. The photocatalyst is used to decompose the pollutants, the fiber carrier contacts the conductor, and the electrons on the photocatalyst are conducted away by using the conductive effect. Therefore, the utility model discloses a photocatalyst electronic filter screen air purification device has the pollutant treatment efficiency and the longer life of long-term effect, preferred, and has deodorization, scrubbing, dust removal and antibiotic function simultaneously.

Description

Photocatalyst electronic filter air purification device

technical field

The utility model relates to a photocatalyst electronic filter screen air purification device, in particular to a photocatalyst electronic filter screen air purification device which uses a conductive effect to improve purification efficiency.

Background technique

Photocatalyst is a light-induced catalyst, which can effectively reduce the energy of chemical reactions, promote chemical reactions or accelerate reactions, but the catalyst itself does not change or destroy the body structure due to the reaction. At present, the common photocatalyst on the market is titanium dioxide (TiO ₂ ) with better catalytic effect. The energy provided by ultraviolet (UV) irradiation makes the electrons in the valence band (Valence Band) of the photocatalyst excited by light and jump to the conduction band (Conduction Band). Band), and leave a hole (Electron Hole) in the valence band to form an electron-hole pair (Electron-Electron Hole Pair). The electron-hole pairs have the ability to oxidize and reduce respectively, and can carry out photocatalytic reactions, so that the oxygen or water molecules around the photocatalyst can be converted into active hydroxyl radicals (OH ) and negative oxygen ions, and these two The substances have strong oxidizing ability, can effectively decompose organic pollutants and odors that are harmful to the human body, and effectively inhibit the growth of germs; at the same time, they also have the advantages of saving energy consumption, improving processing efficiency, easy operation, decontamination and sterilization, etc., but The photocatalytic reaction occurs on the surface of the photocatalyst, so the speed of the reaction is often limited by the contact and transmission rate of the pollutants and the surface of the photocatalyst.

In the prior art, with reference to China Taiwan Patent Announcement No. M242846 and No. 542742, it is to simultaneously coat the photocatalyst glass fiber carrier on the illuminant (fluorescent lamp, ultraviolet lamp, germicidal lamp and other lamp tubes) to decompose the air in the exhaust gas. Refer to Taiwan Patent Announcement No. M241127, which directly coats the photocatalyst coated glass fiber on the ultraviolet lamp tube (including ultraviolet light diode lamp) to decompose waste gas, sterilize, inhibit bacteria, etc.; refer to Taiwan Patent Announcement No. M249662 No., which provides an air purifier with sterilizing and deodorizing functions. It uses titanium dioxide photocatalyst and ultraviolet lamps, and cooperates with ozone lamps to sterilize and deodorize. With reference to China Taiwan Patent Announcement No. M273694, it utilizes bactericidal and deodorizing compounds (for example: chitin, photocatalyst, propolis, activated carbon, nano-gold, nano-silver, nano-TiO ₂ Ag, nano-TiO ₂ Au, nano-TiO ₂ Pt, Electrostatic filter compound, etc.), using spraying, impregnation, etc., to coat it on non-woven fabrics, cotton, fiber silk and other mesh, wave, and honeycomb filters, and make a combined nano-sterilizer after drying and curing The filter, together with other filters, ultraviolet germicidal lamps, activated carbon and windmill motors, is assembled into an air cleaning device, which can prevent the occurrence of germs and clean the air through ultraviolet sterilization and activated carbon deodorization, and most Existing photocatalyst substances are all of this type (for example: Chinese Taiwan Patent Announcement No. 427203, No. 456557, No. 570218, No. 579864).

Another existing air cleaning method is to use an electrostatic precipitator (Electro-static Precipitator, ESP) to purify the air, which uses the principle of corona discharge (Corona Discharge) to apply a high-voltage power supply between the diodes to generate a strong electric field, thereby destroying the insulation of the air Characteristics, after the suspended particles in the air are positively charged, the suspended particles can be adsorbed and collected on the dust collection plate. In addition, an existing air cleaning method is to use a negative ion generator (Negaive Ion Generator), which uses the characteristics of the suspended particles and negative ions combined, and the suspended particles will settle down and no longer suspend, so as to achieve the purpose of purifying the air. Also, an existing air cleaning method is to guide the air flow directly through a fiber or metal filter screen covered with holes of various sizes on the surface, and then separately filter suspended particles of different sizes.

In recent years, a new design that is widely used in air purifiers is the use of electrostatic filters, which use medium and high-efficiency filters to process fiber charging, improve the electrostatic effect of the filter mechanism, and then sweep the air with low pressure loss and high efficiency. Cleaning machine market, but the decay of its electrostatic effect is very fast, resulting in an increase in the replacement rate of consumables, and the price of filter screens remains high. Referring to Chinese Taiwan Patent Announcement No. I297280, it first makes the suspended particles in the air chargeable, and then traps the charged suspended particles in the air with a filter with high filtering efficiency. The filter screen with multi-fold surface can increase the contact area between the filter screen itself and the charged suspended particles, so as to attract a large amount of charged suspended particles, thereby improving the overall filtering performance. Most of the existing air cleaning products are mostly of this type (for example: China Taiwan Patent Announcement No. M242215, No. 216682, No. 010908, No. 010908).

However, in the prior art, a variety of filter materials are combined to achieve a high collection efficiency of suspended particles, but the requirement of low air resistance is quite difficult to achieve. If the pressure loss is too large, even if it has a good collection effect, it will not cannot be widely applied. In addition, after the photocatalyst generates electron-hole pairs, there will be a phenomenon of recombination (Recombination), thereby reducing the efficiency of photocatalytic decomposition. Furthermore, the use of electrostatic or electrostatic filters can only remove suspended particles, but cannot remove gaseous volatile organic pollutants at the same time.

Therefore, it is necessary to provide an innovative and progressive photocatalyst electronic filter air purification device to solve the above problems.

Utility model content

The purpose of this utility model is to provide a photocatalyst electronic filter screen air purification device, which has long-term performance, better pollutant treatment efficiency and longer service life, and has the functions of deodorization, decontamination, dust removal and antibacterial at the same time. Function.

In order to achieve the above purpose, the utility model provides a photocatalyst electronic filter air purification device, which includes: a power supply unit, a conductor, a fiber carrier and a photocatalyst. The conductor is connected to the positive pole of the power supply unit. The fibrous carrier contacts the electrical conductor. The photocatalyst is arranged on the surface of the fiber carrier.

In the above-mentioned photocatalyst electronic filter screen air purification device, the negative pole of the power supply unit is grounded.

In the above-mentioned photocatalyst electronic filter screen air purification device, the conductor is a mesh structure.

In the above-mentioned photocatalyst electronic filter screen air purification device, the fibers of the fiber carrier are doped and interwoven with the conductor in the mesh structure.

In the above-mentioned photocatalyst electronic filter screen air purification device, the fiber carrier is glass fiber, non-woven fabric fiber or melt-blown organic fiber.

In the above-mentioned photocatalyst electronic filter screen air purification device, the photocatalyst is a nano photocatalyst.

In the above-mentioned photocatalyst electronic filter screen air purification device, the photocatalyst is titanium dioxide (TiO ₂ ).

In the above photocatalyst electronic filter air purification device, the photocatalyst is arranged on the surface of the fiber carrier by coating, spraying or soaking.

The above-mentioned photocatalyst electronic filter air purification device further includes a light generator for providing a light source to irradiate the photocatalyst.

In the above-mentioned photocatalyst electronic filter screen air purification device, the light source is ultraviolet light or near ultraviolet light.

Due to the adoption of the above technical solutions, the utility model has the following beneficial effects.

The photocatalyst electronic filter screen air purification device of the utility model is to use the conductive fiber carrier to attract suspended particles, and make the volatile organic pollutants contact the photocatalyst on the surface of the fiber carrier, and under the irradiation of ultraviolet light or near ultraviolet light , can be quickly destroyed and decomposed. Among them, the photocatalyst will form electron-hole pairs after being excited by light, and the fiber carrier contacts the conductor (with positive charge), and uses the conductive effect to guide the electrons of the photocatalyst away, making it difficult for electrons and holes to recombine, resulting in The photocatalyst can still continuously decompose the volatile organic pollutants, so as to improve the decomposition and destruction efficiency of the photocatalyst.

Therefore, the photocatalyst electronic filter screen air purification device of the present invention has long-term effect, better pollutant treatment efficiency and longer service life, and has the functions of deodorization, decontamination, dust removal and antibacterial at the same time.

Description of drawings

Fig. 1 is a schematic diagram showing the utility model photocatalyst electronic filter screen air purification device.

Fig. 2 shows the schematic diagram of the acetone concentration/acetone initial concentration-reaction time of the acetone organic matter photocatalytic reaction test performed by the photocatalyst electronic filter screen air purification device of the present invention and the existing air purification device.

Description of main component symbols:

1 The utility model photocatalyst electronic filter screen air purification device

2 air

3 suspended particles

4 Volatile Organic Pollutants

11 Power supply unit

12 conductors

13 fiber carrier

14 photocatalyst

15 light generators.

Detailed ways

Please refer to FIG. 1 , which is a schematic view showing a photocatalyst electronic filter air purification device of the present invention. Wherein, the photocatalyst electronic filter air purification device 1 can be used to remove suspended particles 3 in the air 2, and can simultaneously remove gaseous volatile organic pollutants (VOCs) 4 (such as acetone).

In this embodiment, the photocatalyst electronic filter air purification device 1 includes: a power supply unit 11 , a conductor 12 , a fiber carrier 13 , a photocatalyst 14 and a light generator 15 . The conductor 12 is connected to the positive pole of the power supply unit 11 . Wherein the cathode of the power supply unit 11 is a ground terminal. Preferably, the conductor 12 has a mesh structure so that the air 2 can pass through smoothly.

The fiber carrier 13 contacts the electrical conductor 12 . Wherein, according to different applications, the fiber carrier 13 can be glass fiber, non-woven fabric fiber or melt-blown organic fiber. It should be noted that, in other applications, the fibers of the fiber carrier 13 can be interwoven with the conductor 12 in the mesh structure to increase conductivity, and the positive electrode of the power supply unit 11 is electrically connected to the conductor 12 .

The photocatalyst 14 is disposed on the surface of the fiber carrier 13 . Preferably, the photocatalyst 14 is a nano photocatalyst. In this embodiment, the photocatalyst 14 is titanium dioxide (TiO ₂ ). Wherein, the photocatalyst 14 can be coated, sprayed or soaked on the surface of the fiber carrier 13 .

The light generator 15 is used to provide a light source to illuminate the photocatalyst 14 . Wherein the light source can be selected from ultraviolet light or near ultraviolet light. The photocatalyst 14 will form electron-hole pairs after being excited by light, and the photocatalyst 14 uses the holes to carry out photocatalytic oxidation and decomposition to decompose the volatile organic pollutants 4 in the air 2. Therefore, whether the holes Residing in the photocatalyst has a great impact on the decomposition effect of pollutants. In addition, the mesh-shaped conductor 12 and the fiber carrier 13 can filter and absorb the suspended particles 3 in the air 2 .

The photocatalyst electronic filter screen air purification device 1 of the present utility model utilizes the conductor 12 and the fiber carrier 13 to attract the suspended particles 3, and makes the volatile organic pollutants 4 contact the photocatalyst 14 on the surface of the fiber carrier 13, and in ultraviolet light Or under the irradiation of near-ultraviolet light, the volatile organic pollutants can be quickly destroyed and decomposed.

Wherein, the photocatalyst 14 forms electron-hole pairs excited by light, because the fiber carrier 13 contacts the conductor 12 (with a positive charge), so the electrons on the photocatalyst 14 can be passed through the fiber carrier 13 by utilizing the conductive effect. And the conductor 12 leads away from the photocatalyst 14, so that electrons and holes are not easy to recombine (that is, the holes can remain in the photocatalyst 14 continuously), so that the photocatalyst 14 can still continuously decompose the volatile organic pollutants 4 , so as to improve the efficiency of the photocatalyst 14 to decompose and destroy, and increase the long-term performance of the photocatalyst 14 to decompose the volatile organic pollutants 4 .

2 is a schematic diagram showing the acetone concentration/the initial concentration of acetone (C/C ₀ )-reaction time for the photocatalytic reaction test of acetone organic matter in the photocatalyst electronic filter air purification device of the present invention and the existing air purification device. Wherein, curve L1 represents the change curve of the acetone concentration/acetone initial concentration-reaction time that photocatalyst electronic filter screen air purification device of the present utility model carries out acetone organic matter photocatalytic reaction test; Curve L2 represents that existing air purification device carries out acetone organic matter photocatalysis The change curve of the acetone concentration of the reaction test/the initial concentration of acetone-reaction time. Comparison of curve L1 and curve L2 shows that when the reaction time is 180 minutes, the acetone concentration/acetone initial concentration value of the present utility model is 0.38, and the existing acetone concentration/acetone initial concentration value is 0.55, that is to say, compared to The existing air purification device, the utility model photocatalyst electronic filter screen air purification device can increase the photocatalytic efficiency of organic matter by 17%, and the longer the reaction time is, the greater the degree of improvement in catalytic decomposition efficiency is.

In summary, the photocatalyst electronic filter screen air purification device 1 of the present utility model has long-term performance, better pollutant treatment efficiency and longer service life, and has the functions of deodorization, decontamination, dust removal and antibacterial at the same time .

However, the above-mentioned embodiments are only for illustrating the principles and effects of the present utility model, and are not intended to limit the present utility model. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present utility model. The scope of rights of the utility model should be based on the scope of the claims.

Claims (10)

1. A photocatalyst electronic filter screen air purification device is characterized in that, comprising: a power supply unit; a conductor connected to the positive pole of the power supply unit; a fibrous carrier in contact with the electrical conductor; and A photocatalyst is arranged on the surface of the fiber carrier. 2. The photocatalyst electronic filter air purification device according to claim 1, characterized in that: the negative terminal of the power supply unit is grounded. 3. The photocatalyst electronic filter air purification device according to claim 1, characterized in that: the conductor is a mesh structure. 4. The photocatalyst electronic filter air purification device according to claim 3, characterized in that: the fibers of the fiber carrier are doped and interwoven with the conductor in the mesh structure. 5. The photocatalyst electronic filter air purification device according to claim 1 or 4, characterized in that: the fiber carrier is glass fiber, non-woven fabric fiber or melt-blown organic fiber. 6. The photocatalyst electronic filter air purification device according to claim 1, characterized in that: the photocatalyst is a nano photocatalyst. 7. The photocatalyst electronic filter air purification device according to claim 1, characterized in that: the photocatalyst is titanium dioxide. 8 . The photocatalyst electronic filter air purification device according to claim 1 , wherein the photocatalyst is disposed on the surface of the fiber carrier by coating, spraying or soaking. 9. The photocatalyst electronic filter air purification device according to claim 1, further comprising a light generator for providing a light source to illuminate the photocatalyst. 10. The photocatalyst electronic filter air purification device according to claim 9, characterized in that: the light source is ultraviolet light or near ultraviolet light.

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