JPH1176762A - Air cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently perform sterilization and deodorization as required in accordance with the absence or the presence of human body by possessing an ozonizer, a sterilization and deodorization means of an ozone decomposition catalytic device and a blowing means and providing a member for opening and closing a flow passage in the flow passage in the ozone decomposition catalytic device. SOLUTION: In the case that human body is present in a room, the sterilization and deodorization is performed by introducing an air in the room into an air cleaning device, shifting a switching damper 7 to a position of a dotted line and decomposing ozone generated in the ozonizer 6 in the ozone decomposition catalytic device 8. The sterilized and deodorized air is supplied to the room after the remaining ozone in the air is naturally decomposed by the strong pressure strong blowing of a fan 11 to make harmless and odorless. On the other hand in the case that human body is absent in the room, the switching damper 7 is shifted to a continuous line, the ozonizer is operated and only the ozone-containing air is introduced into the room. After that, the operation of the fan 11 is started and the switching damper 7 is shifted to the position of the dotted line. As a result, the air in the room is circulated and ozone is decomposed by the action of the ozone decomposition catalytic device 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier provided with a sterilizing / deodorizing means. More specifically, the present invention relates to an air purifying apparatus provided with a sterilizing / deodorizing means in a medical facility such as a hospital or a food manufacturing facility.

[0002]

2. Description of the Related Art Various types of sterilizing apparatuses and methods for air purifying apparatuses have been proposed as follows.

(1) There is an air purifying device or a hospital room where a means for disinfecting and deodorizing air, such as an activated carbon layer, a photocatalytic layer, and ultraviolet rays, is provided (for example, JP-A-63-315).
No. 138).

(2) An electric precipitator inside the air purifier,
Some include an ozone generator and an ozone decomposition catalyst (see, for example, JP-A-2-48050).

(3) An ozone generator is installed inside the air purifier.
There is an anion generator provided with an anion generator and sterilization / deodorization means (for example, see Japanese Patent Application Laid-Open No. 4-260732).

[0006] (4) Some air purifiers are provided with an ultraviolet lamp and provided with sterilization and deodorization (for example, see Japanese Patent Application Laid-Open No. 7-239140).

(5) Some air purifiers include, in addition to an ozone generator and an ozone decomposition catalyst, a sheet filter or the like containing an antibacterial agent such as silver zeolite (see, for example, JP-A-6-323571). reference). (6) A sheet filter containing an antibacterial agent such as silver zeolite is attached or coated on the inside of an air purifier or on the surface of an inner wall, a fan, a filter or the like (see, for example, JP-A-5-55176). ).

[0008]

The sterilization performed by the above-mentioned conventional air purifying apparatus is not sufficient for sterilization. Therefore, there is a possibility that the air in which the bacteria have propagated is sent to, for example, a hospital room or a food manufacturing room.

In the above-mentioned prior art, sterilization means is simply provided inside the air purifying device or in the flow path, and the sterilization treatment for airborne bacteria in a room or the like cannot be sufficiently performed effectively.

[0010] In particular, conventionally, since sterilization means is provided in the air conditioner, when it is desired to sterilize the room independently and intensively,
I couldn't do that.

In addition, because of the structure in which ozone is generated inside the air purifier for sterilization treatment and the ozone is decomposed immediately by the ozone decomposition catalyst, there is a limit in the spatial sterilization ability, and the air purification is limited. The size and capabilities of the aircraft were limited.

[0012] Further, in the conventional ultraviolet lamp, sterilization can be performed only in the irradiated portion or only within the reach of the irradiation. Therefore, the sterilization in the non-irradiated portion is incomplete. Unavoidable, the sterilization effect was destroyed.

Furthermore, even if the antibacterial agent sheet is used for a long period of time, dust, oily smoke, etc. adhere to the surface of the coating film containing the antibacterial agent, thereby preventing direct contact with microorganisms or immediate approach. And the antibacterial effect is greatly reduced. Therefore, the antibacterial action is significantly impaired, and the sterilization performed by the above-described conventional air purifier has not been sufficiently sterilized. Therefore, there is a possibility that the air in which the bacteria have propagated is sent to, for example, a hospital room or a food manufacturing room.

An object of the present invention is to provide a device capable of sufficiently sterilizing and deodorizing a room or the like that solves the above problems. More specifically, depending on manned or unmanned, sterilization
An object of the present invention is to provide an apparatus and a method capable of performing deodorization in a necessary and sufficient manner.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises an ozone generator and a sterilization / deodorization means and an air blowing means which are an ozone decomposition catalyst device, and the ozone decomposition catalyst device has An air purifying apparatus provided with a member for opening and closing the flow path in a road.

Further, an ultraviolet lamp, a photocatalyst, and a photocatalyst excitation lamp are added to the ozone generator and the ozone decomposition catalyst device to provide sterilization and deodorization means, and a blower is provided. An air purifying apparatus provided with a member for opening and closing the flow path in a road.

In the air cleaning device, in addition to strong ozone gas, an ultraviolet lamp, a photocatalyst, and a photocatalyst excitation lamp,
Further, an antibacterial coating or a photocatalytic coating can be provided, and in addition to the strong ozone gas, the interaction can be complemented by the interaction thereof to provide a more sufficient sterilizing / deodorizing action.

At the time of ozone sterilization (fumigation), the fan, which is the blowing means on the downstream side of the ozone generator, is controlled by an inverter to reduce the number of revolutions and the amount and speed of air so as to avoid consumption due to decomposition of ozone. To increase the ozone concentration.

In addition, at the time of ozone deodorization, the rotation speed of the fan is increased, the wind speed and air volume are increased, the ozone decomposition amount is increased, and detoxified air is supplied.

If fans are provided above and below the air purifying device and the fans do not have inverter control,
At the time of ozone fumigation with high ozone concentration, the fan at the top or at the outlet is stopped, and a small amount of air is blown out by the fan at the bottom of the air purifier to minimize the amount of wasteful ozone decomposition. In this way, a high concentration of ozone is generated.

A large air flow fan is provided on the upstream side of the ozone generator, and a small air flow fan is provided on the downstream side.

The member that opens and closes the flow path of the ozonolysis catalyst device responds to the operation of the ozonolysis catalyst device when manned or unmanned.

Ozone gas is used as the sterilizing / deodorizing means. Ozone is employed because it has not only strong sterilization but also a deodorizing effect.

When the chamber is unoccupied, after the chamber is sterilized and deodorized with ozone gas-containing air from the air purifier, the state of the flow circulating again to the air purifier is maintained, and the ozone concentration is kept at a predetermined value for a predetermined time. After that, the ozone-containing air is made to pass through by operating the ozone decomposer in the air purifier to decompose and render ozone harmless.

When the room is manned, a portion of the air from the room is led to the air purifying device, and the ozone gas-containing air from the air purifying device is operated by the ozone decomposing device to decompose and detoxify ozone. Let me send it to the room.

At the time of ozone deodorization, the air detoxified by the ozone decomposition catalyst may be deodorized by an electric dust collector or a photocatalyst.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. FIG. 1 shows an embodiment of the present invention.

FIG. 1 shows an embodiment of the present invention. The air purifying device 1 has a casing made of an antibacterial steel plate in which an inorganic antibacterial agent or a photocatalyst is made into a paint and baked and coated on the inner and outer surfaces.
A housing can be configured. 1 of FIG.
2 shows a side surface.

On the inner surface of these air purifiers,
An antibacterial agent can be contained in a coating film and held.
In this case, an antibacterial agent is contained in a paint or the like, and is applied by baking, roller coating, spraying, or the like.

As an antibacterial agent, an inorganic material such as silver, zinc oxide or copper is used alone or in combination. Due to the action of the antibacterial agent, the growth of microorganisms such as bacteria and mold on or near the surface of the coating film or the like is suppressed, and can be reduced and sterilized.

Inside the air purifying device 1, an antibacterial prefilter 2, an ultraviolet lamp 3, a photocatalyst excitation lamp 4, a photocatalyst filter 5, an ozone generator 6, an ozone generator 60 for sterilization, an ozone generator 61 for deodorization, Damper 7, ozone decomposition catalyst device 8, electric dust collector 9 or photocatalyst 10, fan 1
1, 12 and an ozone concentration sensor 13 are provided.
Note that the ultraviolet lamp 3 can be provided before the antibacterial prefilter 2.

The ozone generator 6 is an ozone generator 6 for sterilization.
0 and an ozone generator 61 for deodorization. Sterilization is for the purpose of sterilization, and deodorization is for the purpose of reducing the amount of ozone generated.

If the fan 11 is provided on the downstream side of the air purifying device 1, it becomes a suction type, and ozone gas does not leak to the outside as compared with a pressurized type of a push-in type. If the fan 12 is provided on the suction side, it becomes a push-in type. In this case, as described later, it is possible to perform processing so that ozone is not destroyed.

The damper 7 can be moved to a position indicated by a dotted line as shown in FIG. The movement of the damper 7 is required to open the flow path and decompose ozone by the ozone decomposition catalyst device 8 when the circulating air is sent to the manned room. It is moved to circulate through.

Various structures are conceivable as a moving device of the damper 7, and FIG. 2 shows a device of a link mechanism.
When the motor 701 rotates, the arm 702 rotates, and when the link 703 is moved rightward in the figure, the closing plate 70 and the link 7 are moved.
Since 03 is rotatably connected, the closing plate 70 is moved rightward in the figure to open the flow path to the ozone decomposition catalyst device 8.

In this case, a sealing device can be provided. FIG. 3 shows a specific example thereof. When the link 703 is moved to the left, the tip of the link 703 abuts against the rotation root 705 of the swing bar 704, and the swing bar 704 is rotated against the closing plate 70 against the spring force. Then, the closing plate 70 is pressed against the sealing member 709. At the same time, the closing plate 70 abuts against the stopper 708 to complete the sealing.

The swing bar 704 is preferably provided on a support 707 supported by the housing 15 via a pin. In the drawing, the swing bar 704 is integrally connected to the support 707 with a bar 706.

The rotation speed of the fan 11, which is a blowing means, can be arbitrarily changed by inverter control. During ozone fumigation, the rotation speed of the fan 11 is reduced to reduce the wind speed and air volume. Here, the ozone fumigation time means that the ozone concentration is high, that is, a case where sterilization is performed directly indoors without any person. This is because if the fan rotation speed is large, ozone is decomposed in the fan as a result of the experiment, so that the rotation speed is reduced and the wasteful ozone consumption is reduced.

During the ozone deodorization, the rotation speed of the fan 11 is increased to increase the wind speed and air volume, and the ozone decomposition amount is increased to supply detoxified air. Here, the time of ozone deodorization is a case where the air purifying apparatus 1 performs sterilization, but decomposes ozone with the apparatus 1 to deodorize, and means that the air cleaning apparatus 1 is used indoors when manned.

Alternatively, when the fan 11 does not have inverter control, the fan 11 is stopped at the time of fumigation of ozone, and the fan 12 at the lower portion of the air purifying device 1
A small amount of air is blown out to minimize the amount of wastefully decomposed ozone, thereby producing a high-concentration ozone generation amount.

When using ozone for sterilization and deodorization,
For sterilization, an ozone generator with an ozone generation amount of several hundred to several thousand mg / h is used.
By using an ozone generator of about h, it is possible to effectively use ozone, to assure safety during deodorization, and to prolong the life of the ozone decomposition catalyst. Further, the amount of ozone generated can be adjusted by adjusting the output of one ozone generator.

An electric precipitator 9 or a photocatalyst 10 can be provided downstream of the ozone decomposition catalyst 8. When the electric dust collector 9 is used, the residual ozone odor is physically decomposed electrically. At this time, negative ions are obtained, and air in a favorable environment for the human body can be supplied. When a photocatalyst is used, the residual ozone odor is decomposed by the oxidation-reduction action.

Since ozone has a low reactivity to ammonia, for example, it is conceivable to place an activated carbon filter on the downstream side of the ozone decomposition catalyst. However, activated carbon cannot adsorb substances having a small molecular weight and deodorizes. The function has a lifetime problem mainly due to the adsorption action.

For example, if a photocatalyst is used in place of the activated carbon filter, deodorization and sterilization can be performed over a wide range not only of ammonia but also of acetaldehyde, trimethylamine, acetic acid, methyl mercaptan, styrene, hydrogen sulfide, and nitrogen oxide. Become. The deodorizing function has a long life, mainly due to the oxidation-reduction action, and has a bactericidal action as well as a deodorizing action. Activated carbon itself has a bactericidal effect, so it is easy to become a hotbed of bacteria, but a photocatalyst does not.

The characteristics of the system for sterilizing and deodorizing pathogenic bacteria will be described in detail below. In the air cleaning device 1, the components of the sterilizing / deodorizing system include an antibacterial pre-filter 2, an ultraviolet lamp 3, a photocatalyst excitation pump 4, a photocatalyst filter 5, ,
An ozone generator 6, a damper 7, an ozone decomposition catalyst device 8, an electric precipitator 9 or a photocatalyst 10, fans 11, 12 and an ozone sensor 13 are provided.

Also, before the pre-filter 2, an ultraviolet lamp 3
May be provided in the preceding stage. First, an ultraviolet lamp 3 having a wavelength of 254 nm is provided, and when irradiated with the ultraviolet lamp 3, airborne bacteria contained in the untreated air are now irradiated with the ultraviolet lamp 3.
Heat energy damages bacterial DNA and, as a result,
The self-proliferation function is reduced by the formation of the teaming dimer.

After treatment, airborne bacteria contained in the non-treated air are effectively combined with ultraviolet light having a specific wavelength and a photocatalyst. That is, a characteristic of the titanium oxide photocatalyst system is that a reaction occurs when its surface comes into contact with water. Due to its adsorptive properties, the reaction occurs even if it comes into contact with air unless it is completely dry.

For the titanium oxide photocatalyst, preferably, ultraviolet light having a wavelength range of 315 to 400 nm is suitable for exciting the photocatalyst. When the ultraviolet lamp 3 having a wavelength of about 400 nm hits the surface of titanium oxide, a strong oxidation potential of 3 V is generated, and water is decomposed to generate active oxygen. This is an oxidation potential higher than that of chlorine, hydrogen peroxide, ozone, or the like, and is such that almost everything can be decomposed and oxidized.

Therefore, if a photocatalyst excitation lamp 4 (also referred to as a black light lamp), which is a kind of an ultraviolet lamp, is provided, the irradiation causes the light to cause an oxidation-reduction potential of 3 V.
The titanium oxide photocatalyst (anatase type) photocatalyst filter 5 is more activated, and active oxygen is generated to destroy bacterial spores and verotoxin.

On the other hand, the former ultraviolet lamp 3 without a photocatalyst may be an ordinary germicidal lamp having a wavelength of 100 to 280 nm. This is because the photocatalyst has an effect of causing the effect, but is low. As described above, by irradiating the photocatalyst by irradiating ordinary ultraviolet rays at the former stage and changing the wavelength of the ultraviolet rays, the sterilizing effect can be further enhanced.

When the two-step ultraviolet irradiation is reversed,
This is because the active oxygen changes the surface DNA of the spore or a part of the DNA inside the spore, suppresses the production of TDHT in the spore during ultraviolet irradiation, and reduces the sterilization effect because some bacteria cannot be completely sterilized.

Thereafter, the spores of the DNA-deformed bacteria are again damaged by the ozone gas having an oxidation-reduction potential of 2.8 V generated by the ozone generator 6, causing a bacteriolysis phenomenon and stopping the growth of the bacteria. The ozone treatment is performed after the photocatalyst because the redox potential of the photocatalyst is higher.

As described above, if the ultraviolet lamp 3 and the photocatalyst are used in addition to the ozone gas, the sterilizing action can be complemented by the mutual advantages. That is, the ozone gas can be filled and sterilized even outside the range where ultraviolet light cannot reach, and when ultraviolet light or a photocatalyst is used, the ozone gas easily damages the spores of cells, and a further sterilizing effect can be obtained.

When supplying air to the room, the damper 7 must
, The flow path is opened, the ozone is decomposed by the ozone decomposition catalyst device 8, and 0.1 ppm or less of ozonized air is supplied. The ozonolysis catalyst device 8 is made of manganese oxide, so that ozonolysis can be carried out efficiently even in a low temperature range, and active oxygen generated during ozonolysis can be expected to have a sterilizing / deodorizing effect.

A heater 14 may be provided in order to avoid a reduction in the effect due to a water film, dirt or the like generated on the surface of the ozone decomposition catalyst device 8. The heater has hot air heated to about 50 degrees and has a desorption / regeneration function.

In the air purifying apparatus 1, an antibacterial agent which can always be expected to be effective can be used for the constituent equipment of the apparatus or the steel plate of the casing of the apparatus. As the antibacterial agent, an inorganic antibacterial agent that is safe and has high heat resistance is used (FIG. 4).

The inorganic antibacterial agent has a broad antibacterial spectrum and has an effect of not causing resistant bacteria. As a method of maximizing the disinfecting and deodorizing effect, when an antibacterial agent is mixed with a paint, the dispersibility is improved, and the antibacterial effect can be improved by floating on the surface.

When the inorganic antibacterial agent is mixed into the paint, the dispersion of the antibacterial agent is eliminated by thoroughly mixing and dispersing it in a solvent or the like to improve the dispersibility. And

Bacteria that have come into contact with the antibacterial agent are destroyed by metal ions (eg, silver, zinc, copper ions, etc.), cause lysis, and die. The air purifying device 1 has a function of mainly sterilizing and deodorizing falling adherent bacteria. With the above configuration, it is possible to systematically sterilize and deodorize.

If a coating film containing an antibacterial agent is applied to the inside of the air purifying device 1, the growth of bacteria and the like is usually suppressed inside the air purifying device 1, and sterilization is always performed regardless of whether or not ozone gas is generated. Be affected.

As described above, the antibacterial agent is expected to have a sterilizing effect not only at the time of gas generation like ozone gas but also at all times. When used in combination with ozone gas, bacteria can be further exterminated. Can reduce the sterilization time and cost.

In performing sterilization and deodorization, the following treatment methods are generally performed in a room or an air purifying apparatus when manned or unmanned. (1) Sterilization and deodorization of uninhabited rooms (2) Sterilization and deodorization of uninhabited rooms

The sterilization and deodorization of the room when no one is working will be described.

When there is no person in the room, such as at night,
Introduce ozone into the room and fumigate the room with ozone. That is,
Maintain a high ozone concentration for a certain period of time. This makes it possible to strongly sterilize the interior of the room.

When there is no person in the room, such as at night, that is, when there is no person, the damper 7 is moved to the solid line,
The flow path to the ozone decomposition catalyst device 8 is closed, the ozone generator 6 is operated, and only the ozone-containing air is introduced into the chamber while the fan 11 or 12 is operated quietly.

In this case, as described above, the fan 11 as the blowing means can arbitrarily change the rotation speed under the control of the inverter.
Reduce the number of revolutions and reduce the wind speed and volume. Here, the ozone fumigation time means that the ozone concentration is high, that is, a case where sterilization is performed directly indoors without any person. this is,
As a result of the experiment, if the fan rotation speed is high, ozone is decomposed by the fan, so that it is possible to reduce the rotation speed of the fan and reduce the wasteful ozone consumption.

While maintaining this state, the room is sterilized by applying an ozone concentration for a certain period of time.

After that, the fan 1 of the air purifying device 1
Restart the operation of 1. However, at this time, the switching damper 7 moves to the position indicated by the broken line in FIG. 1 and opens the flow path to the ozone decomposition catalyst device 8. Thus, the air inside the chamber circulates, and ozone is decomposed by the action of the ozone decomposition catalyst device 8. Hereinafter, in each embodiment, the operation of the ozone decomposition catalyst device after sterilization and deodorization is performed in the same manner.

Thus, the ozone concentration in the room air inside the room decreases and reaches below the human safety limit. At that time, the operation of the air cleaning device 1 is stopped.

A description will be given of the supply of the sterilized and deodorized circulating air into the room when a person is manned.

Even when a person is always in a room where the person is always present, the air is guided to the air purifying apparatus 1 and the switching damper 7 is moved to the position indicated by the dotted line, and the ozone generated by the ozone generator 6 is converted into ozone. By the decomposition action in the decomposition catalyst device 8, it is possible to perform a sterilization action and at the same time a deodorization action.

The sterilized and deodorized air from the air cleaning device 1 maximizes the rotation speed of the fan 11 and increases the wind speed and air volume, thereby forcing residual ozone air by the flow of high pressure and strong wind in the fan 11. It can be naturally decomposed naturally, and it is harmless and odorless before supplying air to the room.

In addition to the natural decomposition of the remaining ozone gas by the high-speed rotation of the fan 11, if the electric precipitator 9 or the photocatalyst 10 is used together, the synergistic effect of the fan 11 on the human body will
It can supply safer air.

When the position of the switching damper 7 of the air purifying apparatus 1 is moved to the broken line side and the ozonolysis catalyst apparatus 8 is operated to operate the air purifying apparatus 1, the air passing through the apparatus 1 has a sterilizing action. Receive.

The sterilized air is supplied to the chamber through a duct or the like. By performing such air circulation, the sterilizing action in the indoor air is continuously performed. The ozone from the ozone generator 6 is naturally decomposed and made harmless by the action of the ozone decomposition catalyst device 8.

As antibacterial means, dust and oily smoke adhering to a portion coated with an antibacterial sheet or paint can be removed by circulating ozone gas or simply flowing circulating air.

In the air purifying device 1, the ozone concentration is always controlled by the ozone sensor 13 at the fan outlet, and when the ozone sensor 13 detects a value equal to or more than the allowable value, the ozone generator 6 is immediately turned on. Is stopped so that it becomes equal to or less than the allowable value.

As described above, according to the present invention, the circulated air can be supplied with sterilized and deodorized air for sterilization and deodorization as required, or when manned.

By providing the above configuration, the same operation can be performed. The device of the present invention can be used not only as an air purifier, but also connected to, for example, an air conditioner.

[0080]

According to the present invention, there are provided switching control means for switching an air purifying apparatus for sterilization and deodorization in accordance with manned or unmanned conditions, and sterilization and deodorization means comprising an ultraviolet lamp, an ozone generator and an ozone decomposition catalyst device. Because it is equipped, it becomes possible to perform the sterilization and deodorization treatment of air in the flow path and the like accompanying the room sufficiently as necessary, and to perform the sterilization and deodorization necessary and sufficient for manned and unmanned. .

As the sterilizing / deodorizing means is provided with an ozone generator and an ozone decomposition catalyst device, not only the strong sterilizing power of ozone gas but also the deodorizing effect can be sufficiently expected.

Conventionally, when there is a person, that is, when there is a man,
Since sterilization and deodorization were not possible,
Although it was extremely limited at night and the like, even when manned, it is now possible to sufficiently perform sterilization and deodorization of each room, the air cleaning device, and the associated flow passages, etc., as needed.

In particular, since the ozone decomposition catalyst device is provided with a member for opening and closing the flow path in the flow path, sterilization and deodorization can be performed even when the apparatus is manned. Can be done.

In the prior art, sterilizing means is simply provided inside the air conditioner or in the flow passage, and since it passes through the room temporarily, it is difficult to completely sterilize. However, since the full-scale sterilization means was effectively arranged, it was possible to concentrate and continuously perform. In particular, according to the present invention, sterilization and deodorization can be surely performed intensively, especially in a room.

Conventionally, since a sterilizer is provided in an air conditioner, when the sterilizer is repaired or replaced, the air conditioner must be stopped one by one, which requires labor and cost. However, due to its spatial limitations, the size and capacity of the air purifier were limited, but if the air purifier of the present invention was arranged in parallel with the air conditioner, repair and replacement could be performed at any time, and Improvements in the performance of the air purifier can be made as needed.

[0086] Further, in the conventionally used ultraviolet lamp, sterilization can be performed only in the irradiated part or only within the range of irradiation, and sterilization in the non-irradiated part is incomplete. Although unavoidable, the sterilization effect has been destroyed, but ozone gas is out of reach of ultraviolet rays,
It could be filled and sterilized, and when used in combination with ozone gas, a further effect was obtained.

Further, if antibacterial means is provided in the air purifying device, in addition to the strong sterilizing power of ozone gas, a sterilizing action can always be expected regardless of whether or not ozone gas is generated. If used together, it is possible to exterminate bacteria more strongly, and it is possible to reduce the sterilization time and cost by using only ozone gas.

In addition to the ozone gas, an ultraviolet lamp and a photocatalyst are used to irradiate a normal ultraviolet ray in the first stage to irradiate the ultraviolet rays with a wavelength that generates active oxygen of the photocatalyst, and then the next stage ozone gas is also emitted. In addition, the sterilization effect can be further improved.

Further, conventionally, even if an antibacterial agent sheet is used for a long period of time, dust and oily smoke adhere to the surface of the coating film containing the antibacterial agent, but ozone gas or circulating air is circulated in the air cleaning device. Therefore, adhesion of dust, oily smoke, and the like is prevented.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the air cleaning device of the present invention.

FIG. 2 shows an embodiment of the switching control means of the air cleaning device of the present invention.

FIG. 3 shows an embodiment of an opening / closing mechanism of a switching control means of the air cleaning device of the present invention.

FIG. 4 shows another embodiment of the air cleaning device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier 2 Antibacterial prefilter 3 Ultraviolet lamp 4 Photocatalyst excitation lamp 5 Photocatalyst filter 6 Ozone generator 60 Sterilization ozone generator 61 Deodorizing ozone generator 7 Damper 70 Closure plate 701 Motor 702 Arm 703 Link 704 Swing bar 705 Rotation Root 706 Bar 707 Supporting tool 708 Stopper 709 Sealing member 8 Ozone decomposition catalyst device 9 Electric precipitator 10 Photocatalyst 11 Fan 12 Fan 13 Ozone sensor 14 Heater 15 Housing

Claims (4)

[Claims] An ozone generator, an ozonolysis catalyst device comprising a sterilizing / deodorizing means and a blowing means, wherein the ozonolysis catalyst device is provided with a member for opening and closing the flow channel. Characterized air purifier. 2. An ultraviolet lamp, a lamp for exciting a photocatalyst, a photocatalyst, an ozone generator, a sterilizing / deodorizing means and an air blowing means as an ozone decomposition catalyst device, wherein the ozone decomposition catalyst device has An air purifier characterized by comprising a member for opening and closing the air purifier. 3. An apparatus for variably adjusting the number of revolutions of a fan, which is a blowing means on the downstream side of an ozone generator, to adjust the amount of ozone decomposed during ozone sterilization (fumigation) and ozone deodorization. The air purifying apparatus according to claim 1, wherein 4. The air purifying apparatus according to claim 1, wherein fans are provided upstream and downstream of the ozone generator.