JP2000202015A - Device and method for air purification using photocatalyst - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the excitation efficiency of a photocatalyst, and at the same time, efficiently bring the photocatalyst into contact with air containing odor components by filling deodorizing grains containing the photocatalyst having a catalyst reaction to deodorize the odor components in air by ultraviolet rays in a container, and providing a means to stir the deodorizing grains in the container. SOLUTION: A large number of deodorizing grains 3 are filled in a container 5, and an ultraviolet light source 2 is disposed at the central section in the container 5 in parallel with the ventilation direction, and a fan 4 is disposed at the lower section of the container 5. Air is fed from the lower direction into this air purifying device 1 by the fan 4, and at the same time, the group of the deodorizing grains 3 in the container 5 is stirred by the air force. Respective deodorizing grains 3 move in the container, and when the grains move to the ultraviolet region from the light source, a photocatalyst contained in the deodorizing grains 3 is excited. Also, since respective deodorizing grains 3 move at random in every direction in the container, the grains 3 collide with air containing odor components, and the odor components are adsorbed by an adsorbing agent contained in the deodorizing grains 3, and the odor components are decomposed by a catalyst reaction by the excitation of the photocatalyst.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source for irradiating ultraviolet rays, a deodorizing particle containing a photocatalyst having a catalytic action of deodorizing odor components in air by the ultraviolet light from the light source, and a container for filling the deodorizing particles. The present invention relates to an air cleaning device using a photocatalyst having the same.

[0002]

2. Description of the Related Art An air purifier using a photocatalyst comprises a filter section carrying a photocatalyst having a corrugated structure or a honeycomb structure, an ultraviolet light source section for exciting a photocatalytic reaction, and a dust collecting mechanism section comprising a fan unit or an ionizer. Have been. In particular, the filter structure has an advantage that the contact area with the air can be increased because the area for supporting the photocatalyst can be increased.

[0003]

However, in the filter using the photocatalyst, there is a problem that the filter structure does not allow the ultraviolet rays to reach the inner surface of the filter, and the photocatalyst is not sufficiently excited, so that the deodorizing efficiency is not improved.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. By actively irradiating a photocatalyst with ultraviolet rays, the excitation efficiency of the photocatalyst is increased, and the photocatalyst is efficiently brought into contact with air containing an odorous component. The purpose is to decompose odor components.

[0005]

In order to achieve the above object, deodorizing particles including a light source for irradiating ultraviolet rays, a photocatalyst having a catalytic action of deodorizing odor components in air by the ultraviolet rays from the light sources, and the deodorizing particles. And an agitator for agitating the deodorized particles in the container. This makes it possible to perform ultraviolet irradiation and odor component adsorption on all of the deodorized particles uniformly, thereby enabling efficient deodorization. This is the invention of claim 1.

Further, a fan is used as the stirring means. Accordingly, the deodorizing particles can be agitated by the flow of air created by the fan, and the ultraviolet irradiation and the odor component adsorption can be uniformly performed on all the deodorizing particles, so that efficient deodorization is possible. . This is the invention of claim 2. In addition, a blower or the like may be used as the stirring means.

Further, an inlet for inflow of air is provided at a lower portion of the container, an outlet for discharging deodorized air is provided at an upper portion, air is flown from the inlet by the fan, and the deodorized particles are discharged. It was allowed to stir. This allows the blown-up deodorized particles to be more randomly stirred by the wind force and the gravity of the fan, so that more even stirring is possible, and all the deodorized particles are evenly irradiated with ultraviolet rays and adsorbed by odor components. Can be performed, so that efficient deodorization is possible. This is the invention of claim 3.

Further, the deodorizing particles have an adsorbent. This increases the amount of odor components that can be adsorbed on the surface of the deodorized particles, thereby enabling efficient deodorization. This is the invention of claim 4.

Further, the deodorized particles are formed in a propeller shape. Thereby, the air resistance of the deodorized particles increases, and the floating time at the time of stirring becomes longer, so that the irradiation time of the ultraviolet rays to the deodorant particles and the contact time with the odor component become longer, and effective deodorization becomes possible. . According to a fifth aspect of the present invention.

[0010] Further, the deodorized particles are made of a porous material.
Thereby, since the deodorizing particles have air permeability, the odor component can be adsorbed even to the inner surface of the deodorizing particles, and efficient deodorization can be performed. This is the invention of claim 6.

Further, an air purifier utilizing a photocatalyst using a light source for irradiating ultraviolet rays, deodorizing particles including a photocatalyst having a catalytic action of deodorizing odor components in the air by the ultraviolet rays from the light source, and a container filled with the deodorizing particles. In the method, a method of stirring the deodorized particles in the container can be adopted. This makes it possible to perform ultraviolet irradiation and odor component adsorption on all the deodorized particles uniformly, so that efficient deodorization becomes possible. It is the invention of claim 7.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[0013]

FIG. 1 is a sectional view of an air cleaning apparatus according to an embodiment of the present invention. As shown in FIG. 1, the air cleaning device 1
The container 5 is filled with a large number of deodorized particles 3, and the ultraviolet light source 2 is provided at the center of the container 5 in parallel with the ventilation direction.
Further, a fan 4 is provided below the container 5. The deodorized particles 3 in FIG. 1 show a stirring state by blowing air from the fan 4.

As shown in FIG. 1, air is blown into the air purifier from below by a fan 4, and at the same time, the deodorized particles 3 in the container 5 are stirred by the wind power. By the stirring, when each deodorizing particle 3 moves in the container and moves to the ultraviolet region from the light source, the photocatalyst contained in the deodorizing particle 3 can be excited. In addition, since each deodorized particle 3 randomly moves in all directions in the container, it collides with air containing an odor component, adsorbs the odor component by the adsorbent contained in the deodorant particle 3, and performs a catalytic reaction by photocatalytic excitation. Decomposes odor components.

[0015]

According to the present invention, the following effects are exhibited by the above configuration. In the first aspect, since the deodorizing particles are agitated, it is possible to perform ultraviolet irradiation and odor component adsorption on all of the deodorizing particles uniformly, so that efficient deodorization is possible.

According to the second aspect, by using a fan as the stirring means, it becomes possible to stir the deodorized particles by the flow of air generated by the fan.

In the third aspect, an inflow port is provided at a lower portion of the container,
By providing an outlet at the upper part of the container and letting the air flow from the inlet through the fan, a flow of air from the inlet to the outlet can be created, and the deodorized particles can be stirred. Thereby, the blown-up deodorized particles are more randomly stirred by the wind force and the gravity of the fan, so that more even stirring is possible.

According to the fourth aspect, since the deodorized particles have the adsorbent, more odor components can be adsorbed.

According to the fifth aspect, since the deodorized particles have a propeller shape, the air resistance is increased, and the floating time of the deodorized particles during the stirring is increased. The contact can be sufficiently performed.

In the sixth aspect, since the deodorizing particles are made of a porous material, the deodorizing particles have air permeability, so that the odor component can be adsorbed to the inner surface of the deodorizing particles.

According to a seventh aspect of the present invention, there is provided a photocatalyst using a light source for irradiating ultraviolet rays, a deodorizing particle including a photocatalyst having a catalytic action of deodorizing odor components in the air by the ultraviolet light from the light source, and a container for filling the deodorizing particles. In the air cleaning method of the above, by adopting a method of stirring the deodorized particles in the container, it becomes possible to uniformly perform ultraviolet irradiation and odor component adsorption on all the deodorized particles, so that efficient deodorization is achieved. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an air cleaning device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a porous deodorized particle.

FIG. 3 is an enlarged view of a propeller-shaped deodorizing particle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Air purifier, 2 ... Ultraviolet light source, 3 ... Deodorized particles, 4
... Fan, 5 ... Container, 6 ... Porous deodorized particles, 7 ...
Propeller-shaped deodorizing particles

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hironobu Morita 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 4C080 AA05 AA07 AA10 BB02 BB05 CC01 HH05 JJ04 KK08 LL10 MM02 QQ11 QQ17 QQ20

Claims (7)

[Claims] 1. An air purifying apparatus using a photocatalyst, comprising: a light source for irradiating ultraviolet light; deodorizing particles including a photocatalyst having a catalytic action of deodorizing odor components in the air by the ultraviolet light from the light source; and a container for filling the deodorizing particles. , An agitating means for agitating the deodorized particles in the container is provided. 2. The air purifier using a photocatalyst according to claim 1, wherein a fan is used as said stirring means. 3. An inflow port into which air flows into a lower portion of the container, and an outflow port through which deodorized air flows out, are provided at an upper portion,
2. The fan according to claim 1, wherein air is introduced from the inlet and the deodorized particles are stirred.
3. An air purifying apparatus using the photocatalyst according to 2. 4. The air purifying apparatus using a photocatalyst according to claim 1, wherein the deodorized particles have an adsorbent. 5. The air purifying apparatus using a photocatalyst according to claim 1, wherein the deodorizing particles have a propeller shape. 6. The air purifying apparatus using a photocatalyst according to claim 1, wherein the deodorizing particles are a porous body. 7. An air purifier utilizing a photocatalyst using a light source for irradiating ultraviolet rays, deodorizing particles including a photocatalyst having a catalytic action of deodorizing odor components in the air by the ultraviolet rays from the light source, and a container filled with the deodorizing particles. A method for cleaning air using a photocatalyst, wherein the deodorizing particles are stirred in the container.