JP2001353209A - Deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing device capable of removing a toxic gas component requiring minimal replenishing and replacing of a constituting component and without requiring special treatment at disposal. SOLUTION: A spatial discharge mechanism 3, a photocatalytic module 4 and an ozone decomposing catalyst 5 are arranged in an air blowing passage 1 of this deodorizing device, and the photocatalytic module 4 is made to perform the phtocatalytic action by ultraviolet rays generated by high voltage discharge of the spatial discharge mechanism 3. Further, by the ozone decomposing action by ozone generated by the high voltage discharge and the ozone decomposing catalyst 5, mal-odor components and a toxic component included in indoor air are oxidized and decomposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus for deodorizing by decomposing odor components and harmful substances contained in the air.

[0002]

2. Description of the Related Art In recent years, the hermeticity of houses has been improved,
Due to the constant pollution of outdoor air, there is an increasing demand for removing odorous components and harmful substances contained in the air in a living space in a house. In particular, tobacco smoke, metabolic odors generated in nursing care environments, or harmful gas components such as formaldehyde (VOC: Volati) contained in building materials and volatilized in the air
There is a high need for removal of le Organic Compounds).

[0003] In order to remove such odor components and harmful substances, conventionally, for example, deodorization and removal of odor components and the like have been carried out using an adsorbent represented by activated carbon, or other odor components have been removed. For example, a method of changing the quality of the odor by reacting with the above-mentioned drug components to reduce the odor is adopted.

[0004]

In these prior arts, those using an adsorbent have a limit in the amount of odor components and the like that can be adsorbed. Had to be replaced. In addition, even before the adsorption capacity is saturated, there is a problem that the odor component once adsorbed is released into the air again at the end of its life.

On the other hand, in a system in which an odor component or the like reacts with another drug component, when the drug component is consumed, it must be replenished and replaced, which is troublesome, and the concentration at which the drug component is released into the air. There is a problem that it is difficult to control to adjust the amount to a suitable amount.

In order to remove harmful gas components such as formaldehyde, a catalytic reaction having a high oxidation-reduction potential is required. For example, in oxidative decomposition using ozone, conversion to intermediate decomposition products is limited. And it cannot be completely removed and rendered harmless. Further, for example, it is possible to decompose formaldehyde and the like by irradiating a photocatalytic material such as titanium oxide with ultraviolet rays, but a fluorescent tube lamp is required to irradiate the ultraviolet rays. Since fluorescent lamps contain mercury, care must be taken during disposal to avoid increasing the environmental burden. Therefore, handling at the time of disposal becomes a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to minimize the need for replenishment and replacement of components and the need for special handling at the time of disposal. An object of the present invention is to provide a deodorizing device capable of removing components and the like.

According to a first aspect of the present invention, there is provided a deodorizing apparatus, comprising: a fan for blowing air; and a discharging means for generating ozone and ultraviolet rays by high-voltage discharge, which is disposed in a blowing path in which air is blown by the fan. And a photocatalyst module disposed in the ventilation path to decompose odor components and harmful substances contained in the air by photocatalysis, and ozone generated in the discharge means disposed in the ventilation path. And an ozone decomposing means for decomposing the ozone.

With this configuration, when air is blown by the fan, ozone and ultraviolet rays are generated by high-voltage discharge in the discharge means arranged in the air blowing path. In the photocatalyst module disposed in the same ventilation path, the photocatalytic reaction can be caused by receiving the ultraviolet rays, and the harmful gas components such as formaldehyde contained in the air are oxidatively decomposed and removed. Becomes possible. When ozone is decomposed by the ozone decomposing means in a state of being mixed with an odor component or the like contained in the air, the odor component or the like is oxidatively decomposed by the oxidizing power of active oxygen.

That is, the odor component and the harmful component can be decomposed and removed by the oxidizing action of ozone generated by the high voltage discharge and the photocatalytic action of ultraviolet rays. No need to do. Further, by combining both, it is possible to decompose odor components and the like over a wider range. And since ultraviolet rays can be generated without using a fluorescent lamp, it is not necessary to consider special handling at the time of disposal.

[0010] In this case, it is preferable that the discharging means is configured to be detachable from the main body of the apparatus. In such a case, the discharging means can be used when contaminants adhere to the electrodes. Can be taken out of the apparatus main body to remove the attached contaminants.

The discharge means may be configured to directly discharge between the two electrodes. With such a structure, a creeping discharge method for performing a discharge through an insulator is preferable. It is possible to take more space for the deodorization treatment than in the case of.

Further, as described in claim 4, it is preferable that the discharging means is configured to discharge by applying a negative high voltage between the electrodes. With such a configuration,
The amount of ozone generated can be increased, and the deodorizing efficiency is improved.

It is preferable that the voltage applied to the discharging means is changed in accordance with the amount of air blown by the fan.
According to this configuration, the decrease in the deodorizing efficiency due to the decrease in the amount of air can be compensated by increasing the applied voltage as the number of rotations of the fan decreases and the amount of air decreases.

It is preferable that the photocatalyst module is disposed between the electrodes of the discharging means.
According to this structure, the photocatalyst module can be efficiently irradiated with the ultraviolet light generated in the discharge means, and the photocatalytic reaction can be further enhanced.

As described in claim 7, the photocatalyst module may be disposed on both the upstream side and the downstream side of the discharge means in the air blowing path. Usage efficiency can be further improved.

It is preferable that the photocatalyst module is configured to be detachable from the apparatus main body.
With such a configuration, when a contaminant such as an inorganic substance adheres to the surface of the photocatalyst module, the photocatalyst module can be taken out of the apparatus main body and the adhered contaminant can be removed.

In this case, it is preferable that the photocatalyst module is configured so that it can be mounted on the apparatus body by exchanging the surface facing the discharging means and the surface located on the opposite side. In other words, on the surface facing the discharge means, the photocatalytic reaction is active and contaminants are likely to adhere. Therefore, by replacing the surface facing the discharge means and the surface located on the opposite side at a stage where the adhesion of the contaminants has progressed to some extent, the photocatalytic reaction can be favorably performed using the opposite surface where there is almost no adhesion of the contaminants. Will be able to proceed.

In addition, as described in the tenth aspect, the photocatalyst module is preferably configured by fixing a photocatalyst material on the surface of a base made of porous ceramic. With such a configuration, even if the photocatalyst module is disposed in the ventilation path, the circulation of the ventilation is not obstructed as much as possible. Further, since the area for fixing the photocatalyst material to the substrate can be increased, the photocatalytic reaction can be performed with high efficiency,
The harmful substances can be efficiently decomposed and removed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical sectional side view showing a configuration of a main part of the deodorizing device. A pre-filter 2, a space discharge mechanism (discharge means) 3, a photocatalyst module 4, and an ozone decomposition catalyst (ozone decomposition means) 5 are arranged inside the duct-shaped air flow path 1. A fan 6 is arranged on the right end side in FIG.
When the fan 6 rotates, the air blow path 1 shown in FIG.
After the air in the room is sucked from the air inlet 1a at the middle left end and passed through the above-mentioned components to achieve the deodorizing action, the deodorized air is exhausted from the air outlet 1b on the right end in FIG. It has become.

The pre-filter 2 is arranged on the most upstream side in the air blowing path 1 and filters dust contained in the air. Prefilter 2
The space discharge mechanism 3 arranged at the subsequent stage includes a plurality of discharge electrodes 7 formed in a wire shape by, for example, tungsten.
And two counter electrodes 8 each having a flat outer shape. The plurality of discharge electrodes 7 are arranged in parallel in a row in the vertical direction in FIG. 1 so as to cross the air flow direction. The two counter electrodes 8 are arranged so as to sandwich the discharge electrodes 2 from front and rear in the direction of air flow. Further, the counter electrode 8 is provided with a slit 8a for flowing air.

FIG. 2 is a functional block diagram showing an electrical configuration. The control unit (control means) 9 controls the operation of the deodorizing device, and is mainly configured by a microcomputer. An operation signal output from a start switch or a switch for setting an operation state such as a wind speed (air volume) from the operation unit 10 is given to the control unit 9. Then, the control unit 9 responds to these operation signals given from the operation unit 9 to (the fan motor of) the fan 6.
In addition, drive control of the high voltage application unit 11 is performed.

The high voltage application unit 11 is provided with a step-up transformer or the like capable of changing the step-up ratio.
A pulsed DC voltage of about several kV is applied to the discharge electrode 7. The counter electrode 8 is connected to the ground. Then, high-voltage discharge is performed between the discharge electrode 7 and the counter electrode 8 to generate ultraviolet rays (wavelength of 380 nm or less) and ozone. In this case, the control unit 9 controls the number of revolutions of the fan 6 in accordance with the operation of the user, and controls the amount of air to be circulated in the air passage 1, and the discharge electrode 7 according to the setting of the amount of air.
Is also controlled.

The photocatalyst module 4 is disposed between the discharge electrode 7 and the counter electrode 8. In the photocatalyst module 4, a photocatalyst material such as titanium oxide is applied to the surface of a base made of a porous ceramic (for example, alumina, silica, etc.), and the photocatalyst material is fixed to the base by drying or sintering. It is configured as something.

The space discharge mechanism 3 and the photocatalyst module 4 are configured so as to be detachable from the air supply path 1 in the direction of the arrow in FIG. That is, although not specifically shown, a door which can be opened and closed is attached to the tube wall of the air blowing path 1 corresponding to a portion where the space discharge mechanism 3 is located, and by opening the door, the air blowing path is opened. The space discharge mechanism 3 and the photocatalyst module 4 arranged inside 1 can be taken out in the direction of the arrow.

The ozone decomposition catalyst 5 is constituted, for example, by fixing a catalyst component to a ceramic honeycomb (molded article) based on manganese oxide or a metal honeycomb formed into a rectangular plate to form a core material. With such a honeycomb structure, a larger contact area between the ozone decomposition catalyst 5 and ozone or odor components is ensured, and the decomposition efficiency is improved.

Next, the operation of this embodiment will be described with reference to FIG. When the start switch is turned on by the user operating the operation unit 10, the control unit 9 rotates the fan 6 and drives the high voltage driving unit 11 to apply a high voltage of −several kV to the discharge electrode 7. Apply. Then, a high voltage discharge is performed between the discharge electrode 7 and the counter electrode 8, and ultraviolet rays and ozone are generated.

At this time, the indoor air containing the odor component is
After being sucked from the intake port 1 a side by the rotation of the fan 6 and filtered by the pre-filter 2, it reaches the space discharge mechanism 3 via the slit 8 a of the counter electrode 8. In the space discharge mechanism 3, ultraviolet rays generated by the high voltage discharge are irradiated to the photocatalyst module 4, and the titanium oxide receives the light energy of the ultraviolet rays and takes an activity to perform a photocatalytic action, and the odor contained in the air. Component ammonia, NO
x, oxidatively decomposes other organic substances and harmful components such as formaldehyde.

The air is mixed with the ozone generated by the high voltage discharge when passing through the space discharge mechanism 3 and reaches the ozone decomposition catalyst 5 at the subsequent stage. In the ozone decomposition catalyst 5, when ozone mixed with an odor component in the air is decomposed, active oxygen is generated, and the odor component is oxidatively decomposed by the oxidizing power of the active oxygen. The air deodorized as described above is exhausted into the room through the exhaust port 1b of the ventilation path 1.

At this time, the control unit 9 controls the operation unit 10 so that the amount of air flowing through the air supply path 1 is, for example, 100 m ³ / h.
If set to a degree, a boosting voltage at high voltage drive unit 11 is set to about -7 kV (peak value), if the air volume is set to, for example, about 50 m 3 / ^h, the boosted voltage - Set to about 10 kV. This is because, when the processing air volume of the deodorizing device is reduced, the discharge voltage is increased accordingly to improve the deodorizing ability, so that the total deodorizing efficiency is not reduced as much as possible.

FIG. 3 shows an example of the results of an experiment conducted by the inventors of the present invention. 30 ppm of formaldehyde gas was injected into a test tank having a volume of 1 m ³ .
And it is the result of having performed the operation by arranging the deodorizing apparatus of this example in a test tank, and measuring the relative concentration of formaldehyde gas. As is apparent from FIG. 3, the concentration of the formaldehyde gas is reduced due to the decomposition and removal of the formaldehyde gas accompanying the operation of the deodorizing device, and the relative concentration at the time when 100 minutes have elapsed after the start of the operation has decreased to 60. .

As described above, according to the present embodiment, the space discharge mechanism 3, the photocatalyst module 4, and the ozone decomposition catalyst 5 are arranged in the air supply path 1 of the deodorizing device, and the space discharge mechanism 3 performs high-voltage discharge. The generated ultraviolet light causes the photocatalytic module 4 to perform a photocatalytic action, and the ozone generated by the high-voltage discharge and the ozone decomposing action by the ozone decomposing catalyst 5 cause odor components and harmful components contained in the indoor air. Was oxidatively decomposed.

That is, since odor components and the like can be decomposed and removed using ozone and ultraviolet rays generated by high-voltage discharge, there is no need to exchange adsorbents or replenish drug components. Further, by combining the photocatalytic action and the ozone decomposing action, it is possible to decompose odor components and the like over a wider range. And since ultraviolet rays can be generated without using a fluorescent tube lamp, it is not necessary to consider special handling at the time of disposal.

Further, since the space discharge mechanism 3 and the photocatalyst module 4 are configured to be detachable from the blowing path 1, the space discharge mechanism is used when contaminants adhere to the discharge electrode 6, the counter electrode 8, or the photocatalyst module 4. 3 can be taken out from the deodorizing apparatus main body, and contaminants attached to these can be removed by, for example, washing with water. Further, since the space discharge mechanism 3 is constituted by the wire-shaped discharge electrode 7 and the outer flat plate-shaped counter electrode 8, and the discharge is performed directly between these electrodes, the creeping discharge which performs the discharge through the insulator is provided. More deodorizing treatment space can be taken compared to the system. Since a high voltage of negative polarity is applied between the electrodes 7 and 8,
The amount of ozone generated can be increased, and the deodorizing efficiency is improved.

Further, according to the present embodiment, the control unit 9 changes the voltage applied to the space discharge mechanism 4 in accordance with the amount of air blown by the fan 6. , The applied voltage is increased and the decrease in the deodorizing efficiency due to the decrease in the amount of blown air can be compensated.

Further, since the photocatalyst module 4 is disposed between the electrodes 7 and 8 of the space discharge mechanism 3, it is possible to efficiently irradiate the photocatalyst module 4 with the ultraviolet rays generated in the space discharge mechanism 3, The reaction can be further enhanced. Further, since the photocatalyst module 4 is arranged on both the upstream side and the downstream side of the space discharge mechanism 3 in the blowing path 1, the utilization efficiency of the ultraviolet light generated in the space discharge mechanism 3 can be further enhanced.

In addition, since the photocatalyst module 4 is configured by fixing titanium oxide on the surface of a porous ceramic base, even if the photocatalyst module 4 is arranged in the airflow path 1, the airflow can be distributed. It will not disturb as much as possible. In addition, since the area for fixing titanium oxide to the base can be increased, the photocatalytic reaction can be performed with high efficiency even when the amount of expensive titanium oxide used is minimized, thereby decomposing harmful substances. Removal can be performed efficiently.

FIGS. 4 and 5 show a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Only different parts will be described below.
In the second embodiment, a space discharge mechanism (discharge means) 12 is arranged in place of the space discharge mechanism 3. Space discharge mechanism 1
2 (the number of discharge electrodes 7 + 1) counter electrodes 13
Are formed in a strip shape, and are arranged alternately with the discharge electrodes 7 in the same arrangement as the discharge electrodes 7 so that the plane thereof is parallel to the direction of air flow. The photocatalyst module 4 is arranged on both the upstream side and the downstream side of the space discharge mechanism 12.

The space discharge mechanism 12, like the space discharge mechanism 3 of the first embodiment, is configured to be detachable from the air blowing path 1, and is arranged independently of the space discharge mechanism 12. The photocatalyst module 4 is also removable.

The operation relating to the deodorization of the second embodiment constructed as described above is basically the same as that of the first embodiment.
Since the plane of the counter electrode 13 is arranged so as to be parallel to the direction of air flow, the air flow in the air flow path 1 is not obstructed as much as possible.

FIG. 5 is a perspective view showing only the space discharge mechanism 12 and the photocatalyst module 4 at the subsequent stage. In the second embodiment, the photocatalyst module 4 is
When the photocatalyst module 4 is attached to and detached from, the surface (surface A) of the photocatalyst module 4 facing the space discharge mechanism 12 and the surface B corresponding to the back thereof are configured to be interchangeable.

That is, on the surface A facing the space discharge mechanism 12, since the photocatalytic reaction is active, contaminants are likely to adhere. Therefore, at the stage when the adhesion of the contaminants has progressed to some extent, if the A surface and the B surface are replaced before removing the photocatalyst module 4 and performing cleaning or the like, the provisional use of the B surface with little adhesion of the contaminants is possible. The photocatalytic reaction can proceed favorably.

As described above, according to the second embodiment, the photocatalyst module 4 is mounted on the deodorizing apparatus main body by exchanging the side A facing the space discharge mechanism 12 and the side B located on the opposite side. Since the configuration is made possible, even if the adhesion of contaminants progresses to some extent and the photocatalytic reaction decreases, the photocatalytic reaction can be temporarily activated by exchanging the A surface and the B surface. Therefore, the photocatalyst module 4 can be used more effectively.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications or extensions are possible. Also in the first embodiment, similarly to the second embodiment, it is possible to use the photocatalyst module 4 by exchanging the A surface and the B surface. Photocatalyst module 4
May be arranged on only one of the upstream side and the downstream side of the space discharge mechanisms 3 and 12. The polarity of the voltage applied to the discharge electrode 7 may be positive. The applied voltage is not limited to a pulsed voltage, but may be a steady AC voltage, a DC voltage, or the like. The counter electrode 8 may be formed in a mesh shape.

Further, the applied voltage may be set to be constant irrespective of the air volume of the air blowing path 1. The discharge mechanism may be a creeping discharge type electrode configuration depending on the setting of the deodorizing ability.

[0045]

Since the present invention is as described above,
The following effects are obtained.

According to the first aspect of the present invention, since the discharging means, the photocatalyst module and the ozone decomposition catalyst are arranged in the air supply path, the oxidizing action by ozone generated by the high voltage discharge and the photocatalytic action by ultraviolet rays. It can decompose and remove odorous and harmful components.
Therefore, there is no need to replace the adsorbent or replenish the drug components. Further, by combining both, it is possible to decompose odor components and the like over a wider range. And since ultraviolet rays can be generated without using a fluorescent lamp, it is not necessary to consider special handling at the time of disposal.

According to the second aspect of the present invention, since the discharging means is detachable from the main body of the apparatus, the discharging means is taken out of the main body of the apparatus when contaminants adhere to the electrodes and the like. It is possible to remove contaminants.

According to the deodorizing device of the third aspect, the discharging means is configured to directly discharge between the two electrodes.
More deodorizing treatment space can be taken as compared with the creeping discharge method in which discharge is performed via an insulator.

According to the fourth aspect of the present invention, since the discharging means is configured to discharge by applying a negative high voltage between the electrodes, the amount of ozone generated is increased and the deodorizing apparatus is deodorized. Efficiency can be improved.

According to the fifth aspect of the present invention, since the voltage applied to the discharge means is changed in accordance with the amount of air blown by the fan, the number of rotations of the fan becomes low and the amount of air blows becomes small. By increasing the applied voltage, it is possible to compensate for a decrease in deodorization efficiency due to a decrease in the amount of air blown.

According to the sixth aspect of the present invention, since the photocatalyst module is disposed between the electrodes of the discharging means, the ultraviolet rays generated in the discharging means can be efficiently irradiated on the photocatalyst module, The photocatalytic reaction can be further enhanced.

According to the seventh aspect of the present invention, since the photocatalyst module is disposed on both the upstream side and the downstream side of the discharging means in the air blowing path, the utilization efficiency of the ultraviolet rays generated in the discharging means is further improved. be able to.

According to the eighth aspect of the present invention, since the photocatalyst module is configured to be detachable from the main body of the device, the photocatalyst module can be removed when contaminants such as inorganic substances adhere to the surface of the photocatalyst module. It is possible to remove contaminants that have been taken out of the apparatus main body and adhered.

According to the deodorizing device of the ninth aspect, the photocatalyst module is configured so that the surface facing the discharging means and the surface located on the opposite side are interchangeable so that the photocatalyst module can be mounted on the apparatus main body. If the surface facing the discharge means and the surface located on the opposite side are replaced at a stage where the adhesion has progressed to a certain extent, the photocatalytic reaction can be favorably promoted using the opposite surface where there is almost no adhesion of contaminants. Become like

According to the tenth aspect of the present invention, since the photocatalyst module is formed by fixing the photocatalyst material on the surface of the base made of porous ceramic, the photocatalyst module is arranged in the air passage. However, it does not obstruct the circulation of the air as much as possible. Further, since the area for fixing the photocatalyst material to the substrate can be increased, the photocatalytic reaction can be performed with high efficiency, and the harmful substances can be efficiently decomposed and removed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a configuration of a main part of a deodorizing apparatus according to a first embodiment of the present invention.

FIG. 2 is a functional block diagram showing an electrical configuration of a main part.

FIG. 3 shows the results of an experiment performed by the inventors of the present invention using the deodorizing apparatus of the first embodiment.

FIG. 4 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 5 is a perspective view showing a part of FIG. 1;

[Explanation of symbols]

1 is a ventilation path, 3 is a space discharge mechanism (discharge means), 4 is a photocatalyst module, 5 is an ozone decomposition catalyst (ozone decomposition means), 7 is a discharge electrode, 8 is a counter electrode, 9 is a control unit, and 12 is a space discharge mechanism. (Discharging means), 13 indicates a counter electrode.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B01J 19/08 C01B 13/11 K // C01B 13/10 B01D 53/36 J 13/11 ZABH (72) Inventor Naohiko Shimura 2-4-4 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Keihin Works Co., Ltd. ) Inventor Takumi Oikawa 1-6 Ota Toshiba-cho, Ibaraki-shi, Osaka F-term in Toshiba Osaka factory (reference) 4C080 AA07 AA10 BB02 CC01 HH02 KK02 MM08 QQ11 QQ17 4D048 AA12 AA19 AA22 AB03 AC07 BB18 CC32 CC40 CC61 DA DA02 DA05 DA09 DA20 EA01 EA03 EA07 4G042 CA01 CB24 CC10 CE04 4G075 AA07 AA37 AA62 BA05 BD14 CA15 CA33 CA54 EC21

Claims (10)

[Claims] 1. A fan for blowing air, a discharging unit disposed in a blowing path where air is blown by the fan, and generating ozone and ultraviolet rays by high-voltage discharge; and a discharging unit disposed in the blowing path and acting as a photocatalyst. A photocatalyst module that decomposes odor components and harmful substances contained in the air; and an ozone decomposing unit that is disposed in the air blowing path and decomposes ozone generated in the discharging unit. Characteristic deodorizing device. 2. The deodorizing apparatus according to claim 1, wherein the discharging means is configured to be detachable from the apparatus main body. 3. The deodorizing apparatus according to claim 1, wherein the discharging means is configured to directly discharge between the two electrodes. 4. The deodorizing apparatus according to claim 1, wherein the discharging means is configured to discharge by applying a high negative voltage between the electrodes. 5. The deodorizing apparatus according to claim 1, wherein the voltage applied to the discharging means is changed according to the amount of air blown by the fan. 6. The deodorizing apparatus according to claim 1, wherein the photocatalyst module is disposed between electrodes of the discharging means. 7. The deodorizing device according to claim 1, wherein the photocatalyst module is disposed on both the upstream side and the downstream side of the discharging means in the air blowing path. 8. The deodorizing apparatus according to claim 1, wherein the photocatalyst module is configured to be detachable from the apparatus main body. 9. The photocatalyst module according to claim 8, wherein the surface facing the discharge means and the surface located on the opposite side are interchanged so that the photocatalyst module can be mounted on the apparatus main body. Deodorizing device. 10. The deodorizing device according to claim 1, wherein the photocatalyst module is configured by fixing a photocatalytic material on a surface of a base made of porous ceramic. apparatus.