JPH11285643A - Photocatalytic deodorizer and photocatalytic deodorizer - Google Patents

Abstract

(57) [Summary] [Problem] To provide a photocatalyst body having enhanced oxidative decomposition ability even by weak ultraviolet light and to provide a photocatalyst deodorizing apparatus using the same. SOLUTION: This photocatalyst deodorizer comprises a reflector and a photocatalyst layer, and further comprises an irregular reflection layer between the reflector and the photocatalyst layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purification and environmental purification technique used in the air conditioning and industrial fields.

[0002]

2. Description of the Related Art Photocatalytic reactions using titanium oxide have been actively studied for application to deodorizing, antifouling, and environmental purification technologies.

However, the conventional titanium oxide photocatalyst has 380
Although it works with ultraviolet light of nm or less, it is about 400 to 800 n
It does not work with visible light of m. For this reason, it was difficult to obtain a sufficient effect because the amount of ultraviolet light contained in sunlight and ordinary fluorescent lamps was several percent or less.

[0004]

In such a conventional photocatalyst deodorant, when used in a device, since the photocatalytic reaction activity is low in sunlight or a normal fluorescent lamp as described above, an ultraviolet lamp is used as a light source. It is difficult to efficiently irradiate the entire catalyst section when the apparatus is incorporated into a device.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a photocatalyst deodorant capable of efficiently irradiating the entire catalyst portion with weak ultraviolet light.

It is another object of the present invention to provide a powdery photocatalyst deodorant capable of efficiently irradiating the entire catalyst portion with weak ultraviolet light.

Another object of the present invention is to provide a photocatalyst deodorant having a strong adsorption capacity and capable of efficiently irradiating the entire catalyst section with weak ultraviolet light.

It is another object of the present invention to provide a photocatalyst deodorizing apparatus having a photocatalytic deodorizing body having a strong adsorption capacity and capable of efficiently irradiating the entire catalyst portion with weak ultraviolet light.

It is another object of the present invention to provide a photocatalytic deodorizing device that does not require an ultraviolet light source inside the apparatus.

[0010]

In order to achieve the above object, the photocatalyst deodorant of the present invention has a diffuse reflection layer provided between a reflector and a photocatalyst layer.

According to the present invention, by providing the irregular reflection layer between the reflector and the photocatalyst layer, of the ultraviolet light applied to the photocatalyst, the ultraviolet light transmitted without being absorbed by the photocatalyst layer is irregularly reflected by the irregular reflection layer. Thus, a photocatalyst deodorant can be obtained, which extends over the entire catalyst layer and can be used efficiently even with weak ultraviolet light.

Another means is a mixture of titanium oxide and glass beads having a small particle diameter.

According to the present invention, since the catalyst layer and the irregular reflection layer are in a powder form, ultraviolet light is irregularly reflected by the irregular reflection layer, spreads over the entire catalyst layer, and can be used efficiently even with weak ultraviolet light. In addition, a photocatalytic deodorant that can be easily processed into deodorants having various shapes can be obtained.

Another means is a method in which at least one adsorbent selected from zeolite, activated carbon, silica gel, aluminum oxide and silicon oxide, a binder and a photocatalyst are mixed and molded.

According to the present invention, a photocatalyst deodorizer having a strong adsorption ability by the action of a mixed adsorbent, capable of efficiently irradiating the entire catalyst layer with weak ultraviolet light, and having a strong deodorization ability. Is obtained.

Another means comprises a housing, an air inlet, an air outlet, and a fan, has a strong adsorption capacity between the air inlet and the air outlet, and emits weak ultraviolet light to the entire catalyst section. And a light source capable of efficiently irradiating the light.

Further, according to the present invention, a photocatalyst deodorizer capable of efficiently stenching odors from an air suction port by a fan and having a strong adsorption capacity for environmental pollutants and capable of efficiently irradiating the entire catalyst section with weak ultraviolet light. The photocatalyst deodorizing device excellent in deodorizing and environmental pollutant purification performance can be obtained by sending the device into the body.

Still another means is to provide a light deodorizing device in which a light diffusing layer is provided in a housing portion where a deodorizing body is installed.

According to the present invention, sunlight and room illumination from the outside of the apparatus can be efficiently introduced into the photocatalyst layer by the light diffusion layer, so that a photocatalyst deodorizing apparatus which does not require a light source inside the apparatus can be obtained. Can be

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention generates electrons and pores by absorbing light having a wavelength of 400 nm or less having energy greater than the band gap, oxidizes and decomposes odors and environmental pollutants, and has an antibacterial effect. In the photocatalyst deodorizing body having a diffuser layer between the reflector and the photocatalyst layer, and between the reflector and the photocatalyst layer, the ultraviolet light is diffusely reflected by the diffuse reflection layer, spreads over the entire catalyst layer, and is efficient even with weak ultraviolet light It has the effect that it can be used in a special way.

Further, since the photocatalyst in which titanium oxide and glass beads having a small particle diameter are mixed is in a powder form in which the catalyst layer and the irregular reflection layer are integrated, the ultraviolet light is irregularly reflected by the irregular reflection layer and spreads over the entire catalyst layer. It has the effect that it can be used efficiently even with weak ultraviolet light and can be easily processed into deodorized bodies having various shapes.

Also, zeolite, activated carbon, silica gel,
A mixture of at least one or more adsorbents selected from aluminum oxide and silicon oxide, a binder, and a photocatalyst. The adsorbent has a strong adsorption capacity due to the action of the adsorbent, and the entire catalyst layer is weakly ultraviolet light. Irradiation can be performed efficiently, and a strong deodorizing ability can be provided.

[0023] Further, a housing, an air inlet, an air outlet, and a fan are provided, and at least one selected from zeolite, activated carbon, silica gel, aluminum oxide, and silicon oxide is provided between the air inlet and the air outlet. Equipped with a photocatalyst deodorizer and a light source by mixing and forming the above adsorbent, binder, and photocatalyst, the fan has an efficient odor from the air intake through the fan, and has a strong adsorption capacity for environmental pollutants, and In this way, it is possible to efficiently deodorize and purify environmental pollutants by feeding the photocatalyst deodorizer capable of efficiently irradiating the entire catalyst section.

In the light deodorizing device, a light diffusing layer is provided in a housing portion where the deodorizing body is installed, so that sunlight and room lighting from outside the device can be efficiently applied to the photocatalytic layer by the light diffusing layer. Since it can be introduced, it has the effect of not requiring a light source inside the device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0026]

(Embodiment 1) An embodiment of the present invention will be described.

FIG. 1 is a cross-sectional view of the photocatalyst 1, which is composed of a reflector 2, a photocatalyst layer 3, and an irregular reflection layer 4 provided therebetween.

In the above configuration, the reflection plate 2, the irregular reflection layer 4, and the photocatalyst layer 3 are in close contact with each other, and when the photocatalyst layer 3 is irradiated with light, the photocatalyst is excited to generate electrons and holes. .

At this time, even if the light energy applied to the photocatalyst layer 3 has a distribution, the light energy transmitted through the high-energy portion without being absorbed by the photocatalyst layer 3 is reflected by the reflection plate 2
The light is efficiently diffusely reflected by the diffuse reflection layer 4 and spread over the entire photocatalyst layer 3, whereby the entire photocatalyst layer 3 can be activated.

(Example 2) FIG. 2 is a perspective view of a photocatalyst body 5, which is formed by mixing and molding titanium oxide and glass beads having a small particle diameter.

In the above configuration, since the photocatalyst 5 is mixed with titanium oxide and glass beads having a small particle diameter, the irradiated light is irregularly reflected inside the photocatalyst 5 and spreads evenly throughout the photocatalyst 5.

In the present embodiment, the photocatalyst 5 is formed in a honeycomb shape, but there is no problem if the photocatalyst 5 is in the form of a sheet or other shapes.

(Embodiment 3) FIG. 3 is a perspective view of a photocatalyst 6, which is formed by mixing and molding pentasil-type zeolite, titanium oxide, and glass beads having a small particle diameter.

In the above configuration, the photocatalyst 6 adsorbs odors and environmental pollutants due to the adsorption action of the pentasil-type zeolite, and is irradiated with light by the photocatalyst 6 The odors and environmental pollutants that are diffusely reflected inside and uniformly spread throughout the photocatalyst body 6 are oxidized and purified.

In this embodiment, the photocatalyst body 6 is formed in a honeycomb shape, but there is no problem if the photocatalyst body 6 is formed in a sheet shape or another form.

(Embodiment 4) FIG. 4 is a sectional view of a photocatalyst deodorizing device 7, in which a housing 8, an air inlet 9 and a fan 1 are shown.
0, photocatalyst deodorant 11, light source 12, and air outlet 13
It is composed of

In the above structure, the photocatalyst deodorant 11 is the same as that shown in the third embodiment. Air containing odor and environmental pollutants taken into the photocatalyst deodorizer 7 from the air inlet 9 by the fan 10 is adsorbed and oxidized and purified by the photocatalyst deodorant 11 activated by the light source 12, and the air outlet 13 is provided.
The air is returned as clean air.

In this embodiment, the photocatalytic deodorizing apparatus is shown in FIG.
However, other configurations can be used without any problem as long as the configuration requirements are satisfied.

Although the photocatalyst deodorant 11 used in the third embodiment, any of the photocatalytic deodorants shown in the first to third embodiments may be used.

(Embodiment 5) FIG.
In the configuration shown in the fourth embodiment, a light diffusing layer 15 is provided instead of the light source 12.

In the above configuration, the light condensed and diffused by the light diffusion layer 15 is applied to the photocatalytic deodorizing body 11, so that the light source in the fourth embodiment is not required.

[0042]

As is clear from the above examples, the provision of an irregular reflection layer between the reflection plate and the photocatalyst layer and the mixing of titanium oxide with glass beads having a small particle diameter and an adsorbent make it possible to obtain a strong effect. A photocatalyst deodorant having adsorption capacity, light energy is distributed throughout the catalyst layer, and can be used efficiently even with weak ultraviolet light.

Further, it has a casing, an air inlet, an air outlet, and a fan, has a strong adsorption capacity between the air inlet and the air outlet, and efficiently uses the weak ultraviolet light to efficiently use the entire catalyst section. By providing a photocatalyst deodorizing body that can be irradiated and a light source, or by providing a light diffusion layer in the housing part, sunlight and room lighting from outside the device can be efficiently introduced into the photocatalyst layer by the light diffusion layer. Therefore, a photocatalytic deodorizing device that does not require a light source inside the device can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a photocatalyst according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a photocatalyst according to the second embodiment.

FIG. 3 is a perspective view of a photocatalyst according to the third embodiment.

FIG. 4 is a cross-sectional view of the photocatalyst deodorizing apparatus of Example 4.

FIG. 5 is a cross-sectional view of the photocatalytic deodorizing apparatus of Example 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photocatalyst 2 Reflector 3 Photocatalyst layer 4 Diffuse reflection layer 5 Photocatalyst 6 Photocatalyst 7 Photocatalyst deodorizing device 8 Housing 9 Air suction port 10 Fan 11 Photocatalytic deodorizing body 12 Light source 13 Air outlet 14 Photocatalytic deodorizing device 15 Light diffusion layer

Claims (5)

[Claims] 1. A photocatalytic deodorizer comprising a reflector and a photocatalyst layer, wherein a diffusely reflecting layer is provided between the reflector and the photocatalyst layer. 2. A photocatalytic deodorant comprising a mixture of titanium oxide and glass beads having a small particle diameter. 3. A mixture of at least one adsorbent selected from zeolite, activated carbon, silica gel, aluminum oxide and silicon oxide, a binder and a photocatalyst.
Or the photocatalyst deodorant according to 2. 4. A housing, an air inlet, an air outlet, and a fan, and the deodorant body and the light source according to claim 1, 2 or 3 provided between the air inlet and the air outlet. Photocatalytic deodorizer. 5. The photocatalytic deodorizing device according to claim 4, wherein a light diffusing layer is provided on a housing portion where the deodorizing body is installed.