WO2006111088A1

WO2006111088A1 - A photocatalyst filter used in computer

Info

Publication number: WO2006111088A1
Application number: PCT/CN2006/000726
Authority: WO
Inventors: Delin Zhang; Panting Hsueh
Original assignee: 72G Group Limited
Priority date: 2005-04-19
Filing date: 2006-04-19
Publication date: 2006-10-26
Also published as: CN1853760A

Abstract

A photocatalyst filter used for computer is disclosed in the present invention. The filter contains at least two layers of metallic netlike framework filter net disposed inside the computer and near the ventilating opening of host computer, and at least one UV lamp disposed between the filter net. On the one hand, the filter can eliminate the volatile organic compounds indoors which is fatal to person, and the organic substance generated by computer itself as well. On the other hand, by fully utilizing the interior structure and the popularity of compute, the cost and the manufacture of the filter will be more reasonable. And users of computer can possess a clean and clear circumstance.

Description

Photocatalyst filter for computer

The invention relates to a filtering process for harmful gases, and more particularly to a photocatalyst filter for a computer, which can be skillfully installed in a computer or the like to remove air pollutants from indoor spaces or individuals to reach air. The purpose of cleansing. Background technique

It is known that long-term exposure to polluted air can reduce the body's respiratory immunity, increase the incidence of laryngitis, bronchitis, and cardiopulmonary disease, while volatile organic compounds (VOCs) such as toluene and benzene in home interiors. Xylene, ammonia, sulfur dioxide, nitrogen dioxide, nitrogen tetrachloride, trichloroethylene, tetrachloroethylene, chloroform, I, ² -xylene, 1,3-dichlorobenzene, ethylbenzene, benzene, etc. It causes modern civilized diseases such as human leukemia, cancer, chronic poisoning and acute poisoning.

According to the “Code for Indoor Environmental Pollution Control of Civil Building Engineering” issued by the Ministry of Construction and the Ministry of Construction in 2001, the indoor environmental pollution caused by construction, decoration and furniture is strictly controlled and managed. However, so far, in China and any other country in the world it can still be found in use in the newly renovated interior and new vehicles long-term deposit with volatile organic compounds (VOC) _r these volatile organic contaminants continuously from a variety of decorative items, For example, sofas, seats, roof sheds, plastic parts, rubber parts, paints, etc. are constantly emitted, posing a hazard to human health. The polluted environment associated with this is also in confined or semi-enclosed spaces within train boxes, ships, submarines, aircraft, hospitals, buildings, etc.

In addition, in modern life, personal computers are almost everywhere along with the range of human activities. While personal computers serve people, they also constantly generate gases that are harmful to human health.

The applicant has recently proposed an air filtering device capable of eliminating the above-mentioned harmful gas, which is usually fixedly installed indoors, and is capable of effectively removing volatile organic compounds which are fatal to humans. However, its structure is complicated, and it is not convenient to carry around. It does not make good use of the already popular computer desktop computer or the portable computer with a fan to simplify the structure of the filter. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a photocatalyst filter for a computer which can take full advantage of the popular advantages of a personal computer and an internal structure to eliminate volatile organic compounds which are fatal to humans.

In order to achieve the above object, the present invention adopts a technical solution:

A photocatalyst filter for a computer, comprising:

At least one layer of a metal mesh filter having a photocatalytic material attached to the surface thereof, the filter being disposed inside the computer mainframe and adjacent to a vent of the computer mainframe;

At least one ultraviolet lamp is disposed adjacent to the filter.

Preferably, the filter mesh is an anatase nano titanium dioxide twelve-sided three-dimensional metal mesh skeleton structure filter network, comprising a skeleton structure and a twelve-sided three-dimensional metal mesh structure sponge filled in the skeleton structure. A filler, the surface of the sponge filler is loaded with an anatase titanium dioxide nanomaterial as a photocatalyst material.

Preferably, the vent is provided with an exhaust fan for discharging the internal air of the computer main body to the vent, further comprising a dust filter, and the filter mesh is closer to the dust filter. The vent, the exhaust fan is located between the filter and the dust filter.

Preferably, the vent is provided with an exhaust fan for drawing air into the interior of the computer mainframe, further comprising a dust filter, and the dust filter is closer to the vent than the filter. The exhaust fan is located between the filter screen and the dust filter.

Preferably, the exhaust fan is an original component of the computer mainframe.

Preferably, the filter mesh is a circular columnar body, or the filter mesh is a rectangular columnar body, or the filter mesh is a columnar body having an irregular or regular polygonal shape in a vertical cross-sectional shape.

Preferably, the ultraviolet lamp is any one of a medium pressure ultraviolet lamp, a high pressure mercury lamp, a black light lamp, and an ultraviolet germicidal lamp or a combination thereof. More preferably, the ultraviolet lamp emits ultraviolet light having a wavelength between 380 nm and 250 nm.

In the above technical solution of the present invention, the photocatalyst filter is installed at a computer vent and comprises an anatase nano titanium dioxide twelve-dimensional three-dimensional metal mesh structure filter, and a sandwich layer and at least one ultraviolet lamp are left in the filter network. Tube, UV tube placed The interlayer in the middle of the screen, the dust filter and the exhaust fan, the dust filter and the exhaust fan are arranged parallel to the filter. The filter located in the personal computer can remove the volatile organic compounds that are fatal to the human body in the room, and can also remove the organic compounds produced by the personal computer itself; on the other hand, the personal computer can be fully utilized. The internal structure and popularization advantages make the cost and manufacture of the filter more reasonable, and at the same time make the users of the personal computer in a green and fresh environment. DRAWINGS

Figure 1 is a schematic diagram of the structure of a typical desktop computer host.

2 is a schematic diagram showing the structure of a typical notebook computer host.

Figure 3 is a schematic diagram showing the structure of a conventional telecommunication switch.

Figure 4 is a schematic view showing the structure of the exhaust port of the filter installed in the computer of the present invention.

Figure 5 is a schematic view showing the structure of the air inlet of the filter installed in the computer of the present invention. detailed description

In order to further explain the above objects, aspects, and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

Please refer to Figure 1-3 first. It is well known that whether it is a desktop computer, a notebook computer, a telecommunications switch or other types of equipment, the main unit usually has an exhaust port 10, and some also have air inlets. 11, for heat dissipation. Desktop computers and switches are usually placed indoors. They also emit volatile organic compounds that are fatal to humans when they are working or not working. They are also a source of pollution indoors. And the laptop computer, ^λ ,

In order to facilitate a better understanding of the present invention, the following describes the relevant properties of titanium dioxide:

The photocatalytic properties of titanium dioxide were discovered by Professor Fujiyuki of Japan in 19"72 years and have been widely studied and applied. The basic principle of photocatalysis is: When semiconductor oxide (such as titanium dioxide) nanoparticles are subjected to energy greater than the forbidden band width After the photon irradiation, the electrons transition from the valence band to the conduction band, and electron-hole pairs are generated. The electrons are reducible, the holes are oxidizing, and the enthalpy-reaction of the holes and the surface of the oxide semiconductor nanoparticles is very oxidizing. High ruthenium free radicals, active ruthenium free radicals can oxidize many refractory organics to CO: And inorganic substances such as H ₂ 0. Therefore, nano-titanium dioxide can be widely used for photocatalytic degradation of fuel wastewater, pharmaceutical wastewater, surfactants, nitrogenous organic compounds, chlorides, freons, industrial pickled waste ice and oily wastewater, and is degraded to C0 _{2 .} , H ₂ 0 and other j, molecular inorganic substances; at the same time, also in the air volatile organic compounds (VOC), such as furfural, stupid, diphenyl, ammonia, sulfur dioxide, nitrogen dioxide, nitrogen tetrachloride , Trichloroethylene, tetrachloroethylene, chloroform, 1,2-dichlorobenzene, 1, 3-dichlorobenzene, ethylbenzene, toluene, etc. are degraded.

Referring to Figures 4 and 5, the photocatalyst filter 20 is installed in the vent of the computer main body, and includes:

Anatase type nano titanium dioxide twelve-sided three-dimensional metal mesh structure filter 21, a sandwich layer 2 ^{2 is} left in the filter net, and the filter net 21 can be set as an integral structure, or can be set as a split structure;

At least one ultraviolet lamp tube 23, the ultraviolet lamp tube 23 is placed in the interlayer 22 in the middle of the filter screen, and the number of the ultraviolet lamp tubes 23 is set according to actual needs;

The dust filter 24 and the exhaust fan 25, the dust filter 24 and the exhaust fan 25 are all arranged in parallel with the filter 21. In the actual design and production, the dust filter 24 is a newly added component, and the exhaust fan can utilize the computer host. Original parts inside. The use of an air fan in the mainframe of the computer solves the need for the filter to require passive suction of the fan, allowing air to pass through the photocatalyst filter 20. The metal or plastic casing of various computer mainframes can block the ultraviolet light of 250nm-380nm emitted by the ultraviolet lamp tube in the casing, and it will not directly or indirectly illuminate or affect the human body.

When the vent of the computer is an exhaust port (see FIG. 4), the anatase-type nano-titanium dioxide twelve-sided three-dimensional metal mesh filter 21 is placed near the exhaust port;

At this time, the dust filter is placed at the principle exhaust port;

The exhaust fan 25 is disposed between the filter 21 and the dust filter 24, that is, the filter 21, the exhaust fan 25, and the dust filter ²⁴ are sequentially disposed from left to right;

When the vent of the computer is the air inlet (see Figure 5)

The dust filter 24 is placed near the air inlet;

The anatase type nano titanium dioxide twelve-sided three-dimensional metal mesh structure filter 21 is placed at the principle air inlet;

The exhaust fan 25 is disposed between the filter 21 and the dust filter 24, that is, the filter 21, the exhaust fan 25, and the dust filter 24 are disposed from left to right;

The anatase type nano titanium dioxide twelve-sided three-dimensional metal mesh structure filter net 21 It is a rectangular column or a sheet.

Of course, the anatase-type nano-titanium dioxide twelve-sided three-dimensional metal mesh structure filter 21 may also be a 柱-shaped columnar body or a sheet-like body, or the anatase-type nano-titanium dioxide twelve-sided three-dimensional metal mesh. The structural filter 21 is a columnar body or a sheet-like body having an irregular or regular polygonal shape in a vertical cross-sectional shape.

The ultraviolet lamp 23 is any one of a medium-pressure ultraviolet lamp, a high-pressure mercury lamp, a black light lamp, and a ultraviolet germicidal lamp. The number of the ultraviolet lamps 23 can be set as needed, and three lamps, four lamps, and the like can be provided.

It should be noted that the anatase-type nano-titanium dioxide twelve-sided three-dimensional metal mesh structure filter 21 in the photocatalyst filter 20 of the present invention is composed of two parts, one part is a twelve-sided three-dimensional metal mesh structure sponge filler, and the other is One part is the skeleton structure supporting the filler, and the twelve-sided three-dimensional metal mesh structure sponge filler is filled in the filler skeleton structure. The skeleton structure is to fix and support the twelve-dimensional three-dimensional metal mesh structure sponge filler, and the surface of the twelve-dimensional three-dimensional metal mesh skeleton sponge filler is loaded with anatase (A type) titanium dioxide nano material, and Forms a stable and firm structure that is durable and resistant to falling off.

The catalytic filter 20 of the present invention adopts a fixed nano titanium dioxide MP-Ti-05 twelve-dimensional three-dimensional metal mesh crosslinked skeleton structure filler of stalfoam Products Inc. as a carrier, and the pores of the twelve-dimensional three-dimensional metal mesh skeleton structure filler The number is ⁴ H>i (from 4 pore structures in one inch length) to 100 ppi (100 pore structure in one inch length), forming 900 m ² /m ³ ~ 1600 Qm ² /m ³ ; Therefore, the contact area of the filler in the air filtering device with the polluted air is large, and the efficiency of filtering the organic compound is high. In the traditional nano-titanium dioxide photocatalyst application, there is no fixed carrier to fix the nano-dioxide powder, so multi-purpose gel (such as Lennox Company of the United States) or phosphoric lime (such as Japan Daikin Air Conditioning Optical Cleale Air Purifier) will be used. Another material is mixed with nano-titanium dioxide in a wet state and then coated on the mesh. The mixture is dried and used as a filter. The specific surface area of the filter is only 1/60 to 1/200 of the present invention.

After the catalyst filter 20 of the present invention is activated, the exhaust fan 25 performs forced ventilation, and air with V0C contaminants is sucked or discharged from the vent port into the filter 20 of the computer, and the ultraviolet lamp tube 23 in the filter 20 is sharp. Titanium nano titanium dioxide twelve-sided three-dimensional metal mesh The photocatalytic action of the structural filter 21 provides stable and continuous ultraviolet light having a wavelength of between 380 nm and 250 nm. The ultraviolet light source 23 can be selected from a medium pressure ultraviolet lamp, a high pressure mercury lamp, and a black light ultraviolet germicidal lamp. Lamp, UV lamp 23 is generally provided by inverter power supply DC6V-12 or AC100-120V, AC220-240V, AC380-440, etc. to obtain high frequency power supply, according to lamp length, lamp power and ultraviolet radiation intensity. The tube voltage can be from 100V to 1500V, or higher, and the frequency is generally above 2QKhz. With

After the air of VOC pollutants passes through the nano-titanium metal mesh-like skeleton structure filler, voc will be effectively and rapidly decomposed by the photocatalytic action of nano-titanium dioxide irradiated by ultraviolet rays, and the purified air of VOC will be eliminated from the outlet end to reach the air voc The powerful filtering effect. However, the effect of anatase-type nano-titanium dioxide on the removal of various harmful substances does not weaken or disappear; as long as continuous ultraviolet irradiation, anatase-type nano-titanium dioxide will continuously produce positive-valence photoelectrons and oxidize organic matter and cut off harmful The valence chain structure of inorganic substances.

Of course, it should be understood by those skilled in the art that the above embodiments are merely illustrative of the present invention and are not intended to limit the invention, as long as the scope of the present invention is Variations and modifications of the examples are intended to fall within the scope of the appended claims.

6

Claims

Rights request

A photocatalyst filter for a computer, comprising: at least one layer of a metal mesh structure filter having a photocatalyst material attached to a surface thereof, the filter net being disposed inside the computer host and adjacent to the Near the vent of the computer mainframe;

At least one ultraviolet lamp is disposed adjacent to the filter.

2. The photocatalyst filter according to claim 1, wherein the filter mesh is an anatase-type nano-titanium dioxide twelve-sided three-dimensional metal mesh skeleton structure filter network, comprising a skeleton structure and being filled in the skeleton structure The twelve-sided three-dimensional metal mesh sponge material is loaded with an anatase titanium dioxide nano material as a photocatalyst material.

3. The photocatalyst filter according to claim 1, wherein the vent is provided with an exhaust fan that discharges air inside the computer main body to the vent, further comprising a dust filter, and The filter screen is closer to the vent than the dust filter, and the exhaust fan is located between the filter screen and the dust filter.

4. The photocatalyst filter according to claim 1, wherein the vent is provided with an exhaust fan for drawing air into the interior of the computer main body, further comprising a dust filter, and the dust filter is The filter screen is closer to the vent, and the exhaust fan is located between the filter screen and the dust filter.

The photocatalyst filter according to claim 3 or 4, wherein the exhaust gas is an original component of the computer main body.

The photocatalyst filter according to claim 5, wherein the filter mesh has a circular columnar body.

The photocatalyst filter according to claim 5, wherein the filter mesh has a rectangular columnar body.

The photocatalyst filter according to claim 5, wherein the filter mesh is a columnar body having an irregular or regular polygonal shape in a vertical cross section.

The photocatalyst filter according to claim 1, wherein the ultraviolet lamp tube is any one of a medium pressure ultraviolet lamp, a high pressure mercury lamp, a black light lamp, and an ultraviolet germicidal lamp, or a combination thereof.

10. The photocatalyst filter according to claim 8, wherein the ultraviolet lamp emits ultraviolet light having a wavelength between 380 nm and 250 nm.