JP4448558B2 - Air purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air cleaning device provided with a sterilizing / deodorizing means. More specifically, the present invention relates to an air cleaning device provided with sterilization / deodorizing means in medical facilities such as hospitals and food manufacturing facilities.
[0002]
[Prior art]
Conventionally, various sterilization apparatuses and methods have been proposed in the air cleaning apparatus as follows.
[0003]
(1) Some air purifiers or hospital rooms are provided with sterilizing / deodorizing means in the air such as an activated carbon layer, a photocatalyst layer, and ultraviolet rays (for example, see JP-A-63-315138).
[0004]
(2) Some air purifiers are provided with an electrostatic precipitator, an ozone generator, and an ozone decomposition catalyst (for example, see JP-A-2-48050).
[0005]
(3) Some air purifiers are provided with an ozone generator and an anion generator and provided with a sterilizing / deodorizing means (see, for example, JP-A-4-260732).
[0006]
(4) Some air purifiers have an ultraviolet lamp and are sterilized and deodorized (for example, see JP-A-7-239140).
[0007]
(5) Some air purifiers include a sheet filter containing an antibacterial agent such as silver zeolite in addition to an ozone generator and an ozone decomposition catalyst (for example, JP-A-6-323571).
(6) A sheet filter containing an antibacterial agent such as silver zeolite or a coating film is formed on the inside or inner wall of an air purifier, a fan, a filter, or the like (for example, JP-A-7-55176) ).
[0008]
[Problems to be solved by the invention]
In the sterilization treatment performed by the above-described conventional air cleaning device, sterilization was not sufficient. For this reason, there is a possibility that air in which bacteria have propagated may be sent to a hospital room or a food manufacturing room, for example.
[0009]
In the prior art, sterilization means is simply provided inside the air purifier or in the flow path, and the airborne bacteria in the room cannot be effectively sterilized effectively.
[0010]
In particular, in the past, since sterilization means was provided in the air conditioner, it was impossible to intensively sterilize the room alone.
[0011]
In addition, due to the structure in which ozone is generated inside the air purifier and sterilized, and ozone is immediately decomposed by the ozonolysis catalyst, there is a limit on spatial sterilization capacity, and the scale of the air purifier And the ability was limited.
[0012]
In addition, since the ultraviolet lamps that have been used in the past can be sterilized only at the irradiated part or within the reachable range of irradiation, the sterilization at the non-irradiated part is incomplete, so that the growth of bacteria can be avoided. The sterilization effect was destroyed.
[0013]
Furthermore, even when the antibacterial agent sheet is used for a long period of time, dust, oily smoke, etc. will adhere near the surface of the coating film containing the antibacterial agent, and if the direct contact with microorganisms or the closest approach is prevented, the antibacterial effect Is significantly reduced. Therefore, the antibacterial effect is remarkably inhibited, and the sterilization treatment performed by the above-described conventional air purifier has not been sufficiently sterilized. For this reason, there is a possibility that air in which bacteria have propagated may be sent to a hospital room or a food manufacturing room, for example.
[0014]
An object of the present invention is to obtain an apparatus that can sufficiently perform sterilization and deodorization treatment in a room or the like that improves the above-described problems. More specifically, it is an object of the present invention to obtain an apparatus and method that can sterilize and deodorize in a necessary and sufficient manner according to manned and unmanned.
[0015]
In order to solve the above-mentioned problems, the present invention provides an ozone generator, sterilization / deodorization means which is an ozone decomposition catalyst device, a fan device on the downstream side of the ozone decomposition catalyst device, and the ozone decomposition catalyst device includes: A flow path switching member for opening and closing the ozone decomposition catalyst device is provided on one side, and the fan device on the downstream side of the ozone decomposition catalyst device is provided with a variable adjusting means for the rotation speed of the fan, so that it is unattended. During ozone sterilization (fumigation) and man-made ozone deodorization, during unmanned sterilization, the other was opened with the flow path to the ozone decomposition catalyst device closed to prevent ozone decomposition By reducing the fan speed for ozone passing through the flow path, the air volume and speed are reduced to avoid exhaustion of ozone, and when manned deodorization, the fan rotates against ozone gas passing through the ozone decomposition catalyst device. Increase the number , By increasing the wind speed-air flow, to provide an air cleaning apparatus for supplying larger to harmless air decomposition of ozone into the room.
[0017]
The sterilizing and deodorizing means provides an air cleaning device comprising an ultraviolet lamp and the photocatalyst exciting light and photocatalytic.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on an example with reference to the drawings. FIG. 1 shows an embodiment of the present invention.
[0028]
FIG. 1 shows an embodiment of the present invention. The air purifying apparatus 1 can constitute a housing with an antibacterial steel sheet obtained by baking and painting an inorganic antibacterial agent or a photocatalyst on the inner and outer surfaces. 1 in FIG. 1 shows the plane, and 2 in FIG.
[0029]
An antibacterial agent can be contained in a coating film or the like on the inner surface of the air cleaning device. In this case, an antibacterial agent is contained in the paint, etc., and is applied by baking, roller coating, spraying, or the like.
[0030]
As the antibacterial agent, inorganic materials such as silver, zinc oxide, and copper are used alone or in combination. By the action of the antibacterial agent, the growth of microorganisms such as bacteria and mold on or near the surface of the coating film is suppressed, and can be reduced and sterilized.
[0031]
Inside the air cleaning device 1, there are an antibacterial prefilter 2, an ultraviolet lamp 3, a photocatalyst excitation lamp 4, a photocatalytic filter 5, an ozone generator 6, a sterilizing ozone generator 60, a deodorizing ozone generator 61, a damper 7, An ozone decomposition catalyst device 8, an electric dust collector 9 or a photocatalyst 10, fans 11, 12 and an ozone concentration sensor 13 are provided.
The ultraviolet lamp 3 can also be provided in front of the antibacterial prefilter 2.
[0032]
The ozone generator 6 can be divided into a sterilizing ozone generator 60 and a deodorizing ozone generator 61. The sterilization is particularly intended for sterilization, and the deodorization is used for the purpose of reducing ozone generation.
[0033]
Further, if the fan 11 is provided on the downstream side of the air cleaning device 1, it becomes a suction type, and ozone gas does not leak to the outside as compared with the pressurization type of the push-in type.
If the fan 12 is provided on the suction side, a push-in type is adopted. In this case, however, it is possible to perform a treatment so that ozone is not destroyed as will be described later.
[0034]
As shown in FIG. 1, the damper 7 can be moved to a dotted line position.
Since the movement of the damper 7 requires that the flow path be opened and ozone be decomposed by the ozone decomposition catalyst device 8 when circulating air is sent to a manned room, the ozone decomposition catalyst device 8 It is moved to circulate through it.
[0035]
Various structures are conceivable as the moving device of the damper 7, and FIG. 2 shows a link mechanism.
When the motor 701 rotates, the arm 702 rotates, and when the link 703 is moved to the right in the figure, the closing plate 70 and the link 703 are connected to each other so that the closing plate 70 is moved to the right in the figure. Then, the flow path is opened with respect to the ozone decomposition catalyst device 8.
[0036]
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 collides with 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. The closing plate 70 is pressed against the seal member 709.
At the same time, the closing plate 70 comes into contact with the stopper 708 to complete the sealing.
[0037]
In addition, the swing bar 704 is preferably provided via a pin on a support 707 supported by the housing 15, and is integrally jointed with the bar 706 in the drawing.
[0038]
The fan 11 that is a blowing means can arbitrarily change the rotation speed by inverter control, and during ozone fumigation, the rotation speed of the fan 11 is decreased to reduce the wind speed and the air volume.
Here, the time of ozone fumigation means that the ozone concentration is high, that is, the case where sterilization is performed directly indoors when unattended.
This is because if the fan rotation speed is high, ozone is decomposed by the fan as a result of the experiment, so that the ozone rotation amount is reduced and the wasteful ozone consumption is reduced.
[0039]
Further, at the time of ozone deodorization, the rotation speed of the fan 11 is increased to increase the wind speed and volume, and the ozone decomposition amount is increased to supply harmless air.
Here, ozone deodorization means that the air cleaning device 1 performs sterilization, but the device 1 decomposes ozone to deodorize and is a case where the device is manned indoors.
[0040]
Or, if the fan 11 does not have inverter control, during the ozone fumigation, the fan 11 is stopped, and a small amount of air is blown out by the fan 12 at the lower part of the air purifier 1, This minimizes the amount of wasteful decomposition and generates a high concentration of ozone.
[0041]
When ozone is used for sterilization and deodorization, an ozone generator with an ozone generation amount of several hundred to several thousand mg / h is used for sterilization, and an ozone generator with an ozone generation amount of about several tens mg / h at the time of deodorization. By using the ozone, it is possible to effectively use ozone, guarantee the safety in deodorization, and extend the life of the ozonolysis catalyst.
It is also possible to adjust the amount of ozone generated by adjusting the output of one ozone generator.
[0042]
An electric dust collector 9 or a photocatalyst 10 can be provided downstream of the ozonolysis 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 an oxidation-reduction action.
[0043]
For example, since ozone has low reactivity to ammonia, an activated carbon filter may be placed on the downstream side of the ozone decomposition catalyst. However, activated carbon cannot adsorb a substance having a low molecular weight, and the deodorizing function is There is a problem of life mainly due to adsorption action.
[0044]
For example, if a photocatalyst is used instead of the activated carbon filter, deodorization and sterilization can be performed over a wide range including not only ammonia but also acetaldehyde, trimethylamine, acetic acid, methyl mercaptan, styrene, hydrogen sulfide, and nitrogen oxide. The deodorizing function has a long life mainly due to the oxidation-reduction action, and has a bactericidal action simultaneously with the deodorizing function.
In addition, activated carbon itself has a bactericidal effect, so it easily becomes a hotbed of bacteria, but this is not the case with photocatalysts.
[0045]
The features of the germicidal and deodorizing system for pathogenic bacteria are described in detail below.
In the air cleaning device 1, the components of the sterilization / deodorization system are the antibacterial pre-filter 2, the ultraviolet lamp 3, the photocatalytic excitation pump 4, and the photocatalytic filter 5 in the air cleaning device 1 with respect to non-treated air. , An ozone generator 6, a damper 7, an ozone decomposition catalyst device 8, an electric dust collector 9 or a photocatalyst 10, fans 11, 12 and an ozone sensor 13 are provided.
[0046]
Further, an ultraviolet lamp 3 may be provided in front of the prefilter 2. First, when an ultraviolet lamp 3 having a wavelength of 254 nm is provided and irradiated, airborne bacteria contained in the untreated air cause the heat energy of the ultraviolet lamp 3 to damage bacterial DNA. The self-proliferating function is reduced by ming dimer formation.
[0047]
For airborne bacteria contained in non-treated air after treatment, a combination of ultraviolet light having a specific wavelength and a photocatalyst is effective.
That is, the feature of the titanium oxide photocatalyst system is that the reaction occurs when the surface comes into contact with water. Because of its adsorptive properties, if it is not completely dry, it will react even when it comes in contact with air.
[0048]
For the titanium oxide photocatalyst, an ultraviolet ray having a wavelength range of 315 to 400 nm is preferably 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 3v is generated, and water is decomposed to generate active oxygen. This is an oxidation potential larger than that of chlorine, hydrogen peroxide, ozone, etc., and is such that almost all can be decomposed and oxidized.
[0049]
Therefore, if a photocatalyst excitation lamp 4 (also referred to as a black light lamp), which is a kind of ultraviolet lamp, is provided, the titanium oxide photocatalyst (anatase type) photocatalyst filter 5 having a redox potential of 3 V is more activated by irradiation with the light. Is produced, and active oxygen is generated, destroying bacterial spores and verotoxins.
[0050]
On the other hand, the ultraviolet lamp 3 without a photocatalyst in the previous stage may be a normal sterilizing lamp having a wavelength of 100 to 280 nm. This is because the photocatalyst has an effect of causing its action but is low.
As described above, when the normal ultraviolet irradiation is performed in the preceding stage and the photocatalyst is irradiated while changing the wavelength of the ultraviolet light, the sterilization effect can be further enhanced.
[0051]
When the two-stage ultraviolet irradiation is reversed, the active oxygen changes the surface layer of the spore and a part of the DNA inside the spore, and the generation of TDHT in the spore is suppressed during the ultraviolet irradiation, so that it is completely sterilized. This is because some bacteria cannot be used and the sterilization effect is reduced.
[0052]
Thereafter, the bacterial spores whose DNA has been deformed are again damaged by ozone gas having a redox potential of 2.8 V generated by the ozone generator 6, causing a lysis phenomenon and stopping the growth of the bacteria. The ozone treatment is performed after the photocatalyst because the photocatalyst has a higher oxidation-reduction potential.
[0053]
If the ultraviolet lamp 3 or the photocatalyst is used in addition to the ozone gas in this way, the sterilization action can be complemented with the advantages of each other. That is, ozone gas can be filled and sterilized even outside the range where ultraviolet rays cannot reach, and when ultraviolet rays or photocatalysts are used, ozone gas can easily damage the spores of cells and provide a further sterilizing effect.
[0054]
When supplying air into the room, the damper 7 is moved below the dotted line in FIG. 1, the flow path is opened, and the ozone decomposition catalyst device 8 performs ozone decomposition to supply 0.1 ppm or less ozonized air. I care. The ozonolysis catalyst device 8 is made of manganese oxide, so that the ozonolysis can be efficiently performed even in a low temperature region, and the sterilization / deodorization effect can be expected even with active oxygen generated during the ozonolysis.
[0055]
A heater 14 may be provided in order to avoid a decrease in effect due to a water film or dirt generated on the surface of the ozone decomposition catalyst device 8. Desorption and regeneration functions are provided by the warm air of the heater heated to around 50 degrees.
[0056]
In the air cleaning device 1, an antibacterial agent that can be expected to be always effective can be used for the component equipment of the device or the casing steel plate of the device. As the antibacterial agent, an inorganic antibacterial agent that is safe and has high heat resistance is used (FIG. 4).
[0057]
Inorganic antibacterial agents have a broad antibacterial spectrum and have the effect of not causing resistant bacteria. As a method for maximizing the sterilizing / deodorizing effect, the antibacterial effect can be improved by improving the dispersibility when the antibacterial agent is mixed with the paint and floating on the surface.
[0058]
When the inorganic antibacterial agent is mixed in the coating material, in order to improve the dispersibility, the antibacterial agent aggregation is eliminated by mixing and dispersing in a solvent or the like and then mixing with the coating material.
[0059]
Bacteria that have come into contact with the antibacterial agent die by lysis due to the destruction of proteins by metal ions (eg, silver, zinc, copper ions, etc.). The air cleaning device 1 mainly has a function of sterilizing and deodorizing the fallen bacteria. With the above configuration, it is possible to sterilize and deodorize systematically.
[0060]
If a coating film containing an antibacterial agent is applied to the inside of the air cleaning device 1, the growth of bacteria or the like is normally suppressed inside the air cleaning device 1 and is constantly sterilized regardless of whether or not ozone gas is generated. .
[0061]
In this way, the antibacterial agent can be expected not only at the time of gas generation like ozone gas, but also at all times, and if used in combination with ozone gas, it becomes possible to further extinguish bacteria, and the sterilization time using only ozone gas As well as cost.
[0062]
When performing sterilization / deodorization, the following processing methods are generally performed in a room or an air purifier when manned or unmanned.
(1) Indoor sterilization and deodorization when no man is used (2) Indoor sterilization and deodorization when man is used [0063]
The sterilization and deodorization in the room when unattended will be explained.
[0064]
When there are no people in the room at night, such as at night, ozone is introduced into the room and the room is fumigated with ozone. That is, a high ozone concentration is maintained for a certain time. Thereby, the inside of a room can be sterilized powerfully.
[0065]
When there is no person inside the room, such as at night, so-called unattended, the damper 7 is moved toward the solid line, the flow path to the ozone decomposition catalyst device 8 is closed, the ozone generator 6 is activated, and the fan 11 Alternatively, only ozone-containing air is introduced into the chamber while the 12 is operated silently.
[0066]
In this case, as described above, the fan 11 serving as the air blowing means can arbitrarily change the rotational speed by inverter control, and during ozone fumigation, the rotational speed of the fan 11 is decreased to reduce the wind speed and the air volume.
Here, the time of ozone fumigation means that the ozone concentration is high, that is, the case where sterilization is performed directly indoors when unattended.
As a result of the experiment, if the fan rotation speed is large, ozone is decomposed by the fan. Therefore, it is possible to reduce the wasteful ozone consumption by reducing the fan rotation speed.
[0067]
While maintaining this state, the ozone concentration is applied for a certain period of time to sterilize the room.
[0068]
Thereafter, the operation of the fan 11 of the air cleaning device 1 is resumed. However, at this time, the switching damper 7 moves to the position of the broken line in FIG. 1 and opens the flow path to the ozone decomposition catalyst device 8. In this way, the air inside the chamber circulates, and ozone is decomposed by the action of the ozone decomposition catalyst device 8.
Hereinafter, in each Example, the action | operation of the ozonolysis catalyst apparatus after disinfection and deodorizing is performed similarly.
[0069]
Thus, the ozone concentration in the zero atmosphere inside the room decreases and reaches below the human safety tolerance limit. At that time, the operation of the air cleaning device 1 is stopped.
[0070]
A description will be given of the supply of circulating air that has been sterilized and deodorized indoors when manned.
[0071]
Further, even in a room where people are always present, the air is guided to the air cleaning device 1, the switching damper 7 is moved to the position of the dotted line, and the ozone generated by the ozone generator 6 is converted into the ozone decomposition catalyst device. By the decomposition action at 8, it can be sterilized and simultaneously deodorized.
[0072]
The sterilized and deodorized air from the air purifier 1 maximizes the number of rotations of the fan 11 and increases the wind speed and air volume, thereby forcing the residual ozone air to be naturally forced by the flow of high pressure and strong wind in the fan 11. It can be decomposed, and it is harmless and non-brominated before it is supplied to the room.
[0073]
If the electrostatic precipitator 9 or the photocatalyst 10 is used in combination with the remaining ozone gas being naturally decomposed by the high-speed rotation of the fan 11, safer air can be supplied to the human body due to the synergistic effect.
[0074]
When the position of the switching damper 7 of the air cleaning device 1 is moved to the broken line side, the ozone decomposition catalyst device 8 is operated and the air cleaning device 1 is operated, the sequential air passing through the device 1 undergoes a sterilizing action.
[0075]
The sterilized air is supplied to the room 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 detoxified by the action of the ozone decomposition catalyst device 8.
[0076]
Further, as an antibacterial means, dust and oily smoke adhering to a part coated with an antibacterial sheet or paint can be removed by circulating ozone gas or simply flowing circulating air.
[0077]
In addition, the air purifier 1 always manages the ozone concentration by the ozone sensor 13 at the fan outlet. When the ozone sensor 13 detects a value exceeding the allowable value, the ozone generator 6 is immediately stopped. So that it is less than the allowable value.
[0078]
As described above, according to the present invention, the circulated air can be sent for sterilization / deodorization or, when necessary, sterilized / deodorized air as needed.
[0079]
By providing the above configuration, the same action can be achieved.
The device of the present invention can be used as an air cleaning device, or connected to an air conditioner, for example.
[0080]
【The invention's effect】
Since it is equipped with switching control means for switching the air cleaning device for sterilization / deodorization according to manned or unmanned, and sterilization / deodorization means consisting of an ozone generator, ozone decomposition catalyst device such as an ultraviolet lamp, etc. As a result, sterilization and deodorization of air in the flow path and the like can be sufficiently performed as necessary, and sterilization and deodorization can be performed sufficiently and appropriately for manned and unmanned.
[0081]
Since the ozone generator and the ozone decomposition catalyst device are provided as the sterilization / deodorization means, not only the strong sterilization power of ozone gas but also a deodorization effect can be sufficiently expected.
[0082]
In the past, sterilization and deodorization was impossible when there were people, that is, manned, so the working time was significantly limited at night etc. Thus, it was possible to sufficiently perform sterilization and deodorization of each room, the air purifier, and the flow path associated therewith.
[0083]
In particular, the ozone decomposition catalyst device is provided with a member that opens and closes the flow path in the flow path, so that it can be sterilized and deodorized even when manned, and can be sterilized and deodorized regardless of whether it is unmanned. became.
[0084]
In the above-mentioned conventional technology, the sterilization means is simply provided inside the air conditioner or in the flow path, and since it passes through the room temporarily, it was difficult to completely sterilize. Since full-fledged sterilization means were arranged effectively, it was possible to intensively and continuously. In particular, according to the present invention, it is possible to sterilize and deodorize the room reliably and intensively, particularly in the room.
[0085]
Conventionally, since a sterilizer is provided in the air conditioner, when the sterilizer is repaired or replaced, the air conditioner must be stopped one by one. The scale and capacity of the air purifier have been limited due to the limitations, but if the air purifier of the present invention is arranged in parallel with the air conditioner, repair or replacement can be performed at any time. The improvement of the ability of can be done as needed.
[0086]
In addition, since the ultraviolet lamps that have been used in the past can be sterilized only at the irradiated part or within the reachable range of irradiation, the sterilization at the non-irradiated part is incomplete, so that the growth of bacteria can be avoided. However, the sterilization effect was annihilated, but the ozone gas could be filled and sterilized even outside the range where ultraviolet rays could not reach, and further effects were obtained when used in combination with ozone gas.
[0087]
Furthermore, if an antibacterial means is provided in the air purifier, in addition to the strong sterilizing power of ozone gas, it can always be expected to have a bactericidal action regardless of whether ozone gas is generated or not. It becomes possible to extinguish bacteria more powerfully, and the sterilization time using only ozone gas can be shortened and the cost can be reduced.
[0088]
In addition to ozone gas, use an ultraviolet lamp and a photocatalyst, irradiate with normal ultraviolet rays at the previous stage, and irradiate with ultraviolet rays that generate photocatalytic active oxygen, add ozone gas at the next stage, The sterilization effect can be further increased.
[0089]
Furthermore, even if the 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. However, dust or oily smoke is circulated in the air cleaning device. , Oil smoke etc. are prevented from adhering.
[Brief description of the drawings]
FIG. 1 shows an embodiment of an air cleaning device of the present invention.
FIG. 2 shows one embodiment of the switching control means of the air cleaning device of the present invention.
FIG. 3 shows an embodiment of the opening / closing mechanism of the 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 pre-filter 3 Ultraviolet lamp 4 Photocatalyst excitation lamp 5 Photocatalyst filter 6 Ozone generator 60 Sterilization ozone generator 61 Deodorization ozone generator 7 Damper 70 Closure plate 701 Motor 702 Arm 703 Link 704 Swing bar 705 Rotation Root 706 Bar 707 Support 708 Stopper 709 Seal member 8 Ozone decomposition catalyst device 9 Dust collector 10 Photocatalyst 11 Fan 12 Fan 13 Ozone sensor 14 Heater heater 15 Housing

Claims (3)

A sterilizing / deodorizing means having an ozone generator and an ozone decomposition catalyst device, and a fan device on the downstream side of the ozone decomposition catalyst device are provided, and the ozone decomposition catalyst device is opened and closed with respect to the ozone decomposition catalyst device. In addition to providing a flow path switching member, the fan device on the downstream side of the ozone decomposition catalyst device is provided with a variable adjusting means for the rotation speed of the fan, which is performed during ozone sterilization (fumigation) during unmanned operation and manned operation. During ozone deodorization and unattended sterilization, the fan rotates against ozone passing through the other open flow path with the flow path to the ozone decomposition catalyst device closed to prevent ozone decomposition By reducing the number, the air volume and speed are reduced, ozone consumption is avoided, and when manned deodorization, the fan speed is increased with respect to the ozone gas passing through the ozone decomposition catalyst device, and the wind speed and air volume are increased. The ozone Air cleaning apparatus and supplying the larger to harmless air solutions quantity into the room 2. The air cleaning apparatus according to claim 1, wherein the sterilizing / deodorizing means further includes an ultraviolet lamp, a photocatalyst excitation lamp, and a photocatalyst. Member for opening and closing a flow path of the ozone decomposition catalyst device comprises a link mechanism, the link mechanism arms, links moved by rotation of the arm, it consists of closing plate which is connected to the link, rotates the arm The air purifier according to claim 1, wherein the link moves and the closing plate opens and closes the ozonolysis catalyst device.

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