JPH04288163A - Deodorizing method and apparatus - Google Patents

Abstract

PURPOSE:To achieve a deodorization in a deodorizing treatment space efficiently within a short time and for a long time. CONSTITUTION:In this deodorizing method, ozone is diffused into a deodorizing treatment space to cause a reaction with an odorous component. Thereafter, unreacted ozone is decomposed by a catalyst and odorous components left in a space is removed by an adsorbent. A deodorizing apparatus is made up of a blowing means, an ozone diffusing section having an ozone generator, a ventilating ozone decomposing section for decomposing unreacted ozone and a ventilating absorption removal section for the removal of the odorous component left in the space by adsorption. The blowing means is made up of a invertible fan 8 and a selection means for selecting blowing direction. When the fan 8 rotates normally, an adjusting means interlocking the selection means makes ozone generate with an ozone generator 7 and when the fan 8 is reversed. The generation of the ozone is stopped.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to homes, hotels, hospitals,
The present invention relates to a deodorizing method and a deodorizing device for deodorizing various spaces such as nursing homes, vehicles such as buses and trains, warehouses, and containers.

0002

2. Description of the Related Art In spaces such as homes and hotels, there are odor components that permeate the floors, ceilings, walls, carpets, curtains, etc. This odor component can be removed to some extent by washing with water, etc.
It can be removed, but it is difficult to completely remove it. For this reason, deodorizers are placed in these spaces to deodorize them,
There is a known method of deodorizing a space by forcing gas in the space to flow through a deodorizing agent layer. These methods can remove odor components floating in the space to some extent. However, in addition to not being able to completely remove odor components, the odor components that have soaked into the carpet in the space continue to gradually volatilize over time, so the deodorizing effect is very low.

[0003] In order to reliably purify the air within a short period of time, Utility Model Publication No. 63-197547 discloses that a frame body is provided with a suction port and a discharge port for indoor air, and a connection between the suction port and the discharge port is disclosed. An air purification device using ozone is disclosed in which an outlet of an ozone generator and an ozone decomposition means are provided in a ventilation passage between the two. Japanese Utility Model Publication No. 64-22351 discloses a case having an inlet and an outlet, and a case installed in a flow path of the case, in order to deodorize and sterilize a closed space such as a refrigerator room in a short time. a blower fan, an ozone generator, a deodorizing catalyst installed downstream of the ozone generator, and a bypass passage that short-circuits the ozone from the ozone generator without passing it through the deodorizing catalyst and releases the ozone to the outside. A deodorizing device is disclosed which includes a damper for switching the flow path on the inlet side of the bypass passage.

However, when treating a room with ozone using these devices, it is usually necessary to diffuse ozone over a long period of time, resulting in low treatment efficiency. Moreover, in addition to the gradual volatilization of the odor components that have soaked into the carpet, etc. in the deodorizing treatment space, there are other sources of odor components in the space after ozone treatment, so the odor components may enter the space again. Floating on. On the other hand, if a space is treated repeatedly or over a long period of time with ozone in order to enhance the deodorizing effect, the active ozone may discolor or deteriorate carpets, curtains, paintings, etc. in the treatment space.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a deodorizing method and a deodorizing device that can efficiently deodorize a deodorized space within a short period of time and over a long period of time.

[0006]

[Means for Solving the Problems] As a result of intensive studies, the present inventor has found that the above object can be achieved when deodorizing using ozone is combined with decomposition of unreacted ozone and removal of odor components using an adsorbent. They discovered this and completed the present invention. That is, the present invention provides a deodorizing method in which ozone is diffused into a deodorizing treatment space to react with odor components, and then unreacted ozone is decomposed by a catalyst and odor components remaining in the space are removed by an adsorbent. do.

[0007] The present invention provides an ozone dissipating section that includes at least a blowing means and an ozone generator, an ozone decomposition section that can blow air and includes a catalyst layer that decomposes ozone, and a an adsorption removal section capable of blowing air to remove odor components remaining in the ozone component using an adsorption layer; and a selection means for selecting a direction, and the ozone generator is connected to an adjustment means for adjusting the amount of ozone generated in conjunction with the selection means.

[0008]

[Operation] The deodorizing method of the present invention combines an ozone diffusion deodorizing method and an adsorption deodorizing method. In other words, in the ozone diffusion deodorization method, by diffusing ozone into the deodorizing treatment space for a predetermined period of time, it is possible to oxidize and deodorize odor components that have permeated materials such as carpets, and to reduce the amount of odor components remaining in the space. is a small amount. Thereafter, by decomposing unreacted ozone with a catalyst and removing odor components remaining in the space, the space can be made almost completely odorless for a long period of time.

Further, in the deodorizing device of the present invention, ozone can be diffused from the ozone dispersion section by the blowing means composed of the fan and the selection means, and unreacted ozone can be decomposed in the ozone decomposition section. Furthermore, since the adjusting means adjusts the amount of ozone generated in conjunction with the selecting means, it is possible to increase the amount of ozone generated during ozone dissipation, and to stop or reduce the generation of ozone during ozone decomposition. Furthermore, trace amounts of odor components remaining in the space due to ozone dissipation are removed by the adsorption/removal section.

[0010] In this specification, "odor components remaining in the space" refers not only to odor components that have not reacted with ozone, but also to all of the odor components present in the space after the ozone and the odor components have reacted. This term is used to include odor components such as odor components that have penetrated into members within the processing space and odor components generated from odor sources.

The present invention will be explained in detail below with reference to the drawings as necessary.

The deodorizing method of the present invention includes an ozone diffusion step in which ozone is diffused into the deodorizing treatment space, an ozone decomposition step in which unreacted ozone is decomposed, and an adsorption step in which odor components remaining in the space are removed using an adsorbent. It includes a processing step. Note that the ozone decomposition step and the adsorption treatment step may be performed simultaneously or sequentially.

[0013] In the ozone dispersion step, ozone generated by an ozone generator may be diffused into the deodorizing treatment space. However, by combining the ozone generator and a fan as a blowing means, ozone is distributed to every corner of the space. It is preferable to dissipate it even further. The type and function of the ozone generator and fan can be selected depending on the size of the space and the type of odor component. As the ozone generator, a silent discharge method, an ultraviolet irradiation method, a water electrolysis method, etc. can be used. A preferred ozone generator is a silent discharge ozone generator. As the fan, for example, a sirocco fan, an axial fan, a cross flow fan, etc. can be used.

[0014] The ozone concentration in the space and the diffusion time can be selected depending mainly on the type and amount of odor components that have permeated the members in the space. Ozone concentration is usually 0.05p
pm or more, preferably about 0.1 to 1000 ppm, more preferably about 0.2 to 500 ppm. The ozone diffusion time is usually 1 minute or more, preferably 5 to 5 minutes.
000 minutes, more preferably about 10 to 1000 minutes. Further, the treatment temperature with ozone is, for example, -50 to
The temperature is 100°C, preferably about -30 to 70°C.

[0015] In the ozone dispersion process, odor components that have permeated the floor, ceiling, walls, carpets, curtains, etc. in the space are mainly removed.
Odor components floating in space are oxidized by ozone,
Almost completely odorless.

[0016] Prior to the ozone diffusion step, the gas in the space may be passed through a dust removal filter such as a charged filter to remove fine solid matter in the gas.

Furthermore, when using a silent discharge type ozone generator as the ozone generator, it is preferable that the gas in the space is treated in advance with an acid-supported adsorbent and then applied to the ozone generating electrode. In this case, basic components such as ammonia and amines in the space can be selectively removed, and the deposition of nitrates and nitrites on the electrode surface of the ozone generator can be prevented or suppressed, stabilizing the ozone generation efficiency. can be converted into

The acid-supported adsorbent is, for example, one in which an inorganic acid such as sulfuric acid or phosphoric acid, or an organic acid such as oxalic acid, citric acid or malic acid is supported on a carrier having adsorption ability. Preferred acids are sulfuric acid, phosphoric acid or citric acid. Examples of carriers include activated carbon, allophane, diatomaceous earth, shale,
Examples include clay minerals such as zeolite, sepiolite, and activated clay, and calcined clay minerals. A preferred carrier has a BET specific surface area of 200 to 2500 m2/g,
In particular, activated carbon is about 500 to 2000 m2/g. The amount of acid supported is, for example, 2 to 50% by weight, preferably 5% by weight.
It is about 40% by weight.

The acid-supporting adsorbent may be in any form such as pellets, granules, porous plates, plates, macaroni, fibers, and honeycombs. Preferred forms of the acid-supported adsorbent are granules, fibers, and honeycombs.

[0020] The contact temperature between the gas and the acid-supported adsorbent is, for example, about 0 to 100°C, preferably about 5 to 80°C. The space velocity of the gas relative to the acid-supported adsorbent is, for example, 10
0-500000hr-1, preferably 500-100
It is about 000hr-1.

[0021] In the ozone decomposition step, various catalysts can be used that can efficiently decompose unreacted ozone remaining in the space after the ozone diffusion step into oxygen and render it harmless. Such catalysts include inorganic catalysts such as activated carbon, alumina, silica, cordierite, sepiolite, zeolite, clay minerals, titania, zirconia, magnesia,
Examples include iron oxide, copper oxide, manganese oxide, and cobalt oxide. These catalysts can be used alone or in combination of two or more. Among these catalysts, catalysts having adsorption ability, especially activated carbon, are preferred.

[0022] An alkali metal compound, an alkaline earth metal compound, a platinum metal compound, etc. may be added to or supported on the catalyst.

[0023] The form of the catalyst is not particularly limited, and may be powdery, granular,
It may be in the form of granules, pellets, fibers, honeycombs, perforated plates, etc. Although the catalyst can be used as a packed bed, it is preferably used as a filter. A preferable form of the catalyst is a fibrous form, particularly a honeycomb form, which has a small pressure loss, uniform gas flow, and high decomposition efficiency. The type of catalyst can be selected depending on the size of the deodorizing treatment space and the type of odor component.

In the ozone decomposition step, in order to efficiently decompose unreacted ozone, it is preferable to circulate unreacted ozone in the space to the catalyst layer using a fan. In this case, the ozone concentration can be reduced to the permissible concentration of 0.1 ppm or less within a short time. The time required for this ozone decomposition process varies depending on the type of catalyst, fan capacity, ozone concentration, space volume, etc., but is usually 500 minutes or less, preferably 5 to 250 minutes.
minutes, more preferably about 10 to 100 minutes. Note that in the ozone decomposition step, a separate fan may be used in addition to the fan used in the ozone diffusion step, but it is preferable to use a fan that can be rotated in forward and reverse directions in common in the ozone diffusion step and the ozone decomposition step. In other words, if a fan that can be rotated forward and backward is used, the fan can be rotated forward in the ozone dispersion process to diffuse ozone, and in the subsequent ozone decomposition process, the fan can be reversed to suck out unreacted ozone.
Two fans can diffuse ozone and suck in unreacted ozone.

[0025] Since ozone treatment requires several hours in an average room, and for health and safety reasons, it is preferable to avoid entering a space with a high ozone concentration, the ozone dispersion process and ozone decomposition process are combined. , is preferably carried out automatically in one compact device.

[0026] Furthermore, when a catalyst having an adsorption ability such as activated carbon is used in the ozone decomposition step, it not only decomposes unreacted ozone but also adsorbs and removes odor components remaining in the space. In this case, unreacted ozone is decomposed and odor components are removed at the same time, making the space almost completely odorless. However, even after the ozone diffusion process, trace amounts of odor components remain in the space for a long time, so
After unreacted ozone is decomposed, it is preferable to perform an adsorption treatment using an adsorbent.

[0027] In the adsorption treatment step, floating odor components in the space are brought into contact with an adsorbent. In order to efficiently remove odor components, it is preferable to use a fan to circulate the odor components floating in the space to the adsorbent. That is, by using an adsorption device equipped with a fan and an adsorbent, odor components can be easily and efficiently removed. The type of fan and adsorbent can be selected depending on the size of the deodorizing treatment space and the type of odor component. As the fan, the same fan as described above can be used.

The adsorbent may be any adsorbent as long as it has the ability to adsorb or oxidize odor components, and examples thereof include activated carbon, alumina, silica, sepiolite, zeolite, clay minerals, titania, zirconia, and magnesia. These adsorbents can be used alone or in combination. A preferred adsorbent is activated carbon.

The form of the adsorbent is not particularly limited, and examples include powder, granules, pellets, fibers, honeycomb, etc.
It may also be in the form of a perforated plate. Although the adsorbent can be used as a packed bed like the catalyst, it is preferable to use it as a filter. A preferable form of the catalyst is a fibrous form, particularly a honeycomb form, which has a small pressure loss, uniform gas flow, and high adsorption efficiency. These adsorbents can be used in combination depending on the type of odor component.

Activated carbon honeycomb, a preferred adsorbent, is
Various binders may be included as long as the activated carbon content is about 30% by weight or more. The specific surface area of activated carbon honeycomb is usually 200 m2 /g or more, preferably 400 m2 /g
More preferably, it is 500 m2/g or more. Further, the number of cells is about 30 to 1500 cells/in2, preferably about 50 to 1000 cells/in2, and the thickness is preferably 5 mm or more.

[0031] The adsorbent may be a drug-supporting adsorbent to which a drug is added or supported. The chemical can be selected depending on the type of odor component remaining in the space. For example, if acidic substances such as acetic acid or lactic acid remain in the space, alkalis are used; if basic substances such as ammonia or amines remain, acids or oxidizing compounds are used; If lower unsaturated hydrocarbons such as acetylene remain, halogens such as bromine are used; if nitrogen oxides, carbon monoxide, hydrogen cyanide, or lower aldehydes remain, platinum group compounds are used. Ru.

Examples of the alkali include sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, and sodium hydrogen carbonate.

[0033] Acids include inorganic acids and organic acids; examples of inorganic acids include phosphoric acid and sulfuric acid; examples of organic acids include oxalic acid, citric acid, and malic acid. . Examples of the oxidizing compound include chromic acid, dichromic acid, and permanganic acid.

The amount of these chemicals supported on the adsorbent is 1
~60% by weight, preferably 2-50% by weight, particularly preferably 5-40% by weight.

The halogen-supported adsorbent is preferably a bromine-supported adsorbent. The amount of halogen supported on the adsorbent is 1 to 30
% by weight, preferably 2-20% by weight, particularly preferably 5
~15% by weight.

Examples of the platinum group elements include platinum, iridium, osmium, palladium, rhodium, ruthenium, and gold. The amount of these platinum group element compounds supported on the adsorbent is 0.1 to 20% by weight, preferably 0.25 to 15% by weight, particularly preferably 0.5 to 10% by weight as a platinum group element.

[0037] As a supporting chemical, a compound of a platinum group element;
Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ag
By simultaneously using at least one or more of these compounds, the gas treatment effect is further improved. The addition ratio of the metal compound to the platinum group element compound (metal/element weight ratio) is 0.1 to 500, preferably 0.5 to 2.
50, more preferably 1-100.

[0038] At least one type of the drug-carrying adsorbent may be used, but the deodorizing effect can be further improved by using two or more types.

A particularly preferred adsorbent is an adsorbent system that is a combination of an adsorbent and a drug-loaded adsorbent. In this adsorbent system, the adsorbent removes odor components remaining in the space, e.g.
The chemical-supported adsorbent can efficiently remove sulfur compounds such as oils, hydrocarbons, disulfides, hydrogen sulfide, sulfur oxides, and mercaptans. It can efficiently remove sexual substances. Therefore, even if the amount of odor components remaining in the space is small, it can be removed almost completely and over a long period of time. Treatment with an adsorbent or a chemical-carrying adsorbent may be performed first, but in order to efficiently remove trace amounts of odor components remaining in the space, the treatment with the adsorbent and the chemical-carrying adsorbent may be performed first. Preference is given to treatment with supported adsorbents.

Although the adsorption treatment using the adsorbent may be carried out continuously, it is economical to carry out the adsorption treatment intermittently since the ozone diffusion step reduces the amount of odor components remaining in the space to a very small amount.

Furthermore, the fan can be installed at an appropriate location, such as on the upstream or downstream side of the adsorbent layer, the drug-carrying layer, or between the adsorbent layer and the drug-carrying layer. It is preferable to install it on the downstream side. In this case, the gas can be sucked in by the fan and passed through the adsorption layer and the chemical-carrying adsorption layer in sequence, so corrosion of the fan due to nitrogen compounds, aldehydes, sulfides, etc. can be prevented, and a high deodorizing effect can be maintained for a long time. Can be maintained for a long time.

[0042] In order to increase the removal efficiency by the adsorbent, it is preferable that the gas to be subjected to the adsorption treatment step be passed through a dust removal filter such as a charged filter to remove fine solid particles in the gas.

[0043] In such a deodorizing method, ozone emission and
Since it combines subsequent ozone decomposition and adsorption treatment,
Even if the ozone diffusion time is short, the space can be almost completely deodorized.

[0044] Below, the deodorizing device of the present invention will be explained in more detail with reference to the accompanying drawings.

FIG. 1 is a schematic vertical sectional view showing an embodiment of an ozone dissipating deodorizing device constituting the device of the present invention, and FIG. 2 is a schematic longitudinal sectional view showing an embodiment of the adsorption deodorizing device constituting the device of the present invention. FIG. Note that the ozone diffusion deodorization device functions as an ozone diffusion section and an ozone decomposition section, and the adsorption deodorization device functions as an adsorption processing section.

The ozone dispersion deodorizing device 1 includes a flow path 3 formed by an opening 4 at one end of a hollow casing 2 and an opening 5 at the other end, and a flow path 3 arranged in sequence within this flow path 3. , a catalyst layer 6 such as activated carbon honeycomb, a silent discharge ozone generator 7, and a reversible fan 8 connected to a motor 9. The ozone generating electrode 7a of the ozone generator 7 is disposed in a cylindrical duct 10, and an acid-supported adsorbent layer 11 is provided on the inlet side of the duct to pre-treat the gas supplied to the electrode 7a. It is being Further, the electrode 7a is connected to a high voltage generator 12. In addition, the code|symbol 13 is an ozone sensor.

FIG. 3 is a block diagram showing the electrical configuration of the ozone diffusion deodorizing device of the present invention.

In this device, an ON-OFF switch 22 connected to an AC power source 21 is connected to a switching circuit 23 of a motor 9 that drives a fan 8. This switching circuit 23 functions as a selection means for selecting the direction of air blowing. Further, the ON-OFF switch 22 is also connected to a high voltage generation circuit 24 connected to the ozone generator 7. Further, the ON-OFF switch 22 is also connected to a counter 25 as a time measuring means.

This counter 25 starts counting when the ON-OFF switch 22 is turned on, and starts counting at time T0.
to T1, a normal rotation signal is applied to the switching circuit 23 to cause the motor 9 to rotate in the normal direction, and a drive signal is applied to the high voltage generation circuit 24 to cause the ozone generator 7 to generate ozone. Therefore, from time T0 to time T1, the fan 8 rotates normally to blow the gas in the deodorizing space from the opening 4 to the other opening 5, and the ozone generator 7 The output will be maximum. The gas sucked from the opening 4 to the opening 5 and the ozone generated by the ozone generator 7 are mixed by the fan 8, and the mixed gas containing highly concentrated ozone is diffused into the space from the opening 5. Furthermore, since the gas supplied to the ozone generator 7 has been previously treated with the acid-supported adsorbent layer 11, deterioration of the electrode 7a surface of the ozone generator 7 is significantly suppressed. A region of the casing 2 between the ozone generator 7 and the opening 5 functions as an ozone dissipation section.

Further, when the ozone diffusion is continued until time T1, the circulating gas containing unreacted ozone, odor components, etc. is sucked by the fan 8 and passes through the opening 4 to the catalyst layer 6.
Upon contact with, unreacted ozone is decomposed. When the catalyst layer 6 is composed of activated carbon honeycomb or the like, odor components are also adsorbed and removed. The gas that has passed through the catalyst layer 6 is
The ozone is mixed with the ozone generated at the electrode 7a and is emitted into the space again. By continuing this operation until time T1, the ozone concentration in the space becomes approximately constant, and the odor components that have permeated the floor, ceiling, walls, carpet curtains, etc. are oxidized and deodorized. In this process, odor components floating in the space are also oxidized and deodorized.

On the other hand, at time T1, the counter 25 gives a reverse rotation signal to the switching circuit 23, and the motor 9
At the same time, a stop signal is given to the high voltage generation circuit 24 to stop the ozone generator 7 from generating ozone. The operating time of the counter 25 is T1 - T2
In this case, the reverse rotation of the fan 8 and the stoppage of ozone generation continue, and the gas in the space flows in the opposite direction to the above, that is, from the opening 5 to the opening 4, and the gas in the sucked gas continues to flow. of unreacted ozone passes through the catalyst layer 6. Unreacted ozone is decomposed into oxygen by the catalyst layer 6, so the human body,
There is no risk of harm to animals etc. The area of the casing 2 where the catalyst layer 6 is arranged functions as an ozone decomposition section.Furthermore, at time T2, the counter 25 gives an OFF signal to the ON-OFF switch 22,
The operation of the entire device is stopped, and then the odor components remaining in the space are adsorbed.

[0052] In this manner, by controlling the forward rotation of the fan 8 and the generation of ozone, and the reverse rotation of the fan 8 and the stoppage of ozone generation, deodorization can be easily and automatically performed.

In this embodiment, the counter 25 and the high voltage generating circuit 24 function as adjusting means for adjusting the amount of ozone generated.

Note that in this embodiment, a timer may be used instead of the counter. Furthermore, by using a first counter and a second counter, the operating time of the motor can be set to the first counter.
The operating time of the high voltage generation circuit is determined by the second counter.
This may be done using a counter. The fan may be operated at predetermined intervals using a counter or timer.

[0055] The operation of the ozone diffusion deodorizing device can also be controlled in combination with a sensor such as an ozone sensor or odor sensor, a timer, or the like. FIG. 4 is a block diagram showing another electrical configuration of the ozone deodorizing device constituting the deodorizing device of the present invention.

In this example, the odor sensor 31 detects the concentration of odor components in the space, and the ozone sensor 3
3 to detect the ozone concentration in the space. The detected value V1 by the odor sensor 31 is provided to a first comparison circuit 32, where it is compared with a reference value Vf1 corresponding to the reference concentration of the odor component. Further, the detected value V2 by the ozone sensor 33 is provided to a second comparison circuit 34, and this comparison circuit compares it with a reference value Vf2 corresponding to the permissible ozone concentration.

The ON-OFF switch 22 is connected to the switching circuit 23 of the motor 9 as described above, and
It is connected to a high voltage generation circuit 24 which is connected to the ozone generator 7.

[0058] When the detected value by the odor sensor 31 is V1 ≧Vf1, the first comparison circuit 32
Based on the comparison result, a forward rotation signal is given to the switching circuit 23, causing the motor 9 to rotate forward and the high voltage generation circuit 2
A drive signal is applied to the ozone generator 4, and the ozone generator 7 generates ozone.

Further, the detection value V1 of the odor sensor 31 and the reference value Vf1 are also provided to the arithmetic control circuit 35. This arithmetic control circuit 35 has a detection value V1 and a reference value Vf1.
Based on this, a control amount appropriate for deodorizing odor components in the space with ozone is calculated, and a control signal is given to the rotation speed control circuit 36 of the motor 9 to increase the rotation speed, and the frequency control circuit 37 to increase the amount of ozone generated by the high voltage generating circuit 24 and the ozone generator 7. Therefore, when the concentration of odor components in the deodorization processing space is equal to or higher than the reference value Vf1, the fan 8 is rotated in the normal direction while controlling the rotation speed in accordance with the concentration of the odor components.
Ozone can be diffused while controlling the amount of ozone generated by the ozone generator 7 through the high voltage generation circuit 24.

[0060] As ozone dissipates, the odor sensor 3
When the detected value by V1 becomes V1<Vf1, a reverse rotation signal is applied to the switching circuit 23 based on the comparison result in the first comparison circuit 32, and the motor 9 is rotated in the reverse direction. The arithmetic control circuit 35 also provides a control signal to the rotation speed control circuit 36 of the motor 9 to control the rotation speed of the motor 9, and also sends a control signal to the frequency control circuit 37 to reduce the frequency or stop the generation of ozone. give. Therefore, as the motor 9 and fan 8 are rotated in reverse, unreacted ozone can be decomposed by the catalyst layer 3.

[0061] Then, the ozone sensor 33 detects the ozone concentration that decreases due to the decomposition of unreacted ozone, and when the detected value by the ozone sensor 33 becomes V2 < Vf2, the second comparison circuit 34 ON-OFF switch 2
2, and the operation of the device is stopped.

In this embodiment, the second comparison circuit 34 may be provided with a reference value Vf3 corresponding to the upper limit of the ozone concentration in addition to Vf2. In this case, when the value detected by the ozone sensor 33 becomes V2 ≧Vf3, the second comparison circuit 33 and other arithmetic control circuits can control the reverse rotation of the fan 8, the decrease in the amount of ozone generation, or the stoppage of ozone generation. . Further, the arithmetic control circuit, the rotation speed control circuit, and the frequency control circuit are not necessarily necessary, and the first comparison circuit may control forward and reverse rotation of the motor, and generation or stop of ozone by the ozone generator.

In each of the embodiments described above, the blowing means is not limited to one reversible motor fan, but may be two motor fans or a plurality of motor fans with different rotation directions. Furthermore, by combining an odor sensor and/or an ozone sensor with a timer, it is possible to rotate the fan forward or backward, reduce the amount of ozone generated by the ozone generator, or stop ozone generation.
and may control the deactivation of the device. For example, in the example shown in FIG. 1, the detection value V detected by the ozone sensor 13 is compared with a reference value Vf1 corresponding to the lower limit value of ozone concentration and a reference value Vf2 corresponding to the upper limit value in the comparison circuit, and Vf1 < When V<Vf2, the fan is rotated in the normal direction and ozone is generated by an ozone generator to dissipate the ozone, and when V≧Vf2, the fan is rotated in the reverse direction and the generation of ozone is stopped. When V≦Vf1, the operation of the fan may be stopped.

[0064] After the space is treated by the ozone diffusion deodorizing device, odor components remaining in the space are removed by the adsorption deodorizing device shown in Fig. 2, so that the space can be almost completely deodorized and the odor components can be deodorized for a long period of time. It can maintain an odorless state for a long time.

The adsorption deodorizing device 41 shown in FIG. 2 is detachably attached to the ozone dissipating deodorizing device 1 with a stopper 14, as shown in FIG.

The adsorption deodorizing device 41 has a flow path 43 formed by an intake port 44 at one end of the hollow casing 42 and an exhaust port 45 at the other end, and is arranged in sequence in this flow path 43. , a dust removal filter 46, an adsorption layer 47 such as an activated carbon honeycomb, a drug-supporting adsorption layer 48 such as a drug-supporting activated carbon honeycomb, and a fan 49 that rotates in one direction.

When the adsorption deodorizing device 41 is operated, the rotation of the fan 16 causes odor components remaining in the space where ozone has been decomposed to be sucked through the intake port 44 . The sucked gas passes through the adsorption layer 47 to remove odor components, and the odor components not removed by the adsorption layer 47 are removed in the process of passing through the drug-carrying adsorption layer 48. Therefore, odor components remaining in the space can be almost completely removed, clean gas is exhausted from the exhaust port 45, and the space is deodorized.

The adsorption deodorizing device 41 can be operated depending on the occurrence of odor components in the space, and may be operated continuously, but it is economical to operate it intermittently using a timer or the like. . Further, the adsorption deodorizing device may be provided with an odor sensor, and when the detected value of the sensor exceeds a reference value corresponding to the allowable concentration of odor components, the fan may be operated based on the comparison circuit. good.

FIG. 6 is a schematic plan view showing another ozone dissipating deodorizing device constituting the deodorizing device of the present invention. This ozone diffusion deodorizing device 51 includes a box-shaped casing 52, catalyst layers 56 respectively disposed at a plurality of openings of the casing 52, and an opening 55 formed in the casing 52.
It includes an ozone generator 57 disposed within a casing 52 and a reversible fan 58. The ozone generator 57
is connected to the high voltage generator 62, an air compressor 63 is connected to the ozone generator 57, and the ozone generator 57 is connected to the pipe connected to the compressor 63.
An acid-supporting adsorption layer 61 is disposed to pre-treat the gas supplied to the tank.

In the above embodiment, the ozone diffusion deodorization device diffuses and decomposes ozone, and the adsorption deodorization device removes odor components remaining in the space using an adsorbent. , only ozone diffusion may be performed. In this case, the adsorption deodorization device decomposes unreacted ozone and adsorbs and removes odor components. In addition, ozone diffusion deodorization equipment and adsorption deodorization equipment are
It may be integrated. FIG. 7 is a schematic vertical sectional view showing another embodiment of the deodorizing device of the present invention. It should be noted that the same elements as those in the above embodiment will be described with the same reference numerals.

In the deodorizing device of this embodiment, a first flow path 73 is formed by an opening 74 formed at one end of the hollow casing 72 and an opening 75 formed at the other end. ing. This first channel 73 has an ozone generator 7 connected to the high voltage generator 12 and provided with an acid-supported adsorbent layer 11, and a motor 9, as in the embodiment shown in FIG. A fan 8 is arranged. Moreover, in the flow path 73,
In the direction from one opening 74 toward the fan 8, a chemical-carrying adsorption layer 48, a catalyst/adsorption layer 6 such as an activated carbon honeycomb, and a dust removal filter 46 are arranged in this order.

The space between the drug-carrying adsorption layer 48 and the catalyst/adsorption layer 6 and the space between the catalyst/adsorption layer 6 and the dust removal filter 46 are connected to one side by the second flow path 76, respectively. The opening 74 at the end communicates with the first flow path 73 . Furthermore, dampers 77 for switching the flow paths are provided in each of the second flow paths 76 . This damper 77 opens the second flow path 76 when the fan 8 is rotating in the normal direction, and opens the second flow path 76 when the fan 8 is rotating in the reverse direction.
Close. The opening/closing operation of the damper 77 can be controlled by a signal from the switching circuit in the embodiment described above.

[0073] With such a deodorizing device, the ozone diffusion and decomposition and the removal of odor components using the adsorbent can be carried out in one device. That is, while the fan 8 is rotated in the normal direction, the ozone generated by the ozone generator 7 is
The gas is mixed with the gas sucked from the opening 74 through the second flow path 76 and is diffused. Furthermore, when the fan 8 is reversed after the ozone treatment is completed, the generation of ozone is stopped or reduced, and the gas containing unreacted ozone is transferred to the dust removal filter 46,
It passes through the catalyst/adsorption layer 6 and the drug-supporting adsorption layer 48. In the catalyst-adsorption layer 6, ozone is mainly decomposed and some of the odor components are removed, and in the drug-supporting adsorption layer 48, other ozone components are mainly removed. Odor components are removed.

In addition, in such an integrated deodorizing device, as long as the catalyst layer is located on the upstream side when the fan is rotating normally, the arrangement order of the catalyst layer, adsorption layer, and chemical-carrying adsorption layer is particularly limited. There is no limitation, and the second flow path can be formed appropriately depending on the arrangement order of the dust filter, the catalyst layer, the adsorption layer, and the drug-supporting adsorption layer.

In the deodorizing device of the present invention, the gas in the space may be treated individually in the ozone dispersion section, ozone decomposition section, and adsorption processing section, but as described above,
It is preferable that the ozone dispersion section and the ozone decomposition section be integrated to diffuse ozone and decompose unreacted ozone, and remove remaining odor components by adsorption in the adsorption treatment section.

Preferred embodiments of the deodorizing device of the present invention are as follows.

(a) A deodorizing device in which an ozone dissipation section and an ozone decomposition section are formed in one flow path and are detachable from the adsorption removal section.

(b) The selection means for selecting the air blowing direction is
A deodorizing device comprising a clock means and a switching means for giving a forward rotation or reverse rotation signal to a fan motor according to the operating time of the clock means.

(c) The adjustment means, depending on the operating time,
A deodorizing device consisting of a timer that provides a control signal to the high voltage generating circuit of an ozone generator.

(d) The selection means includes an odor and/or ozone sensor, a comparison means for comparing the detection value of this sensor and a reference value corresponding to the odor and/or ozone concentration, and based on the comparison result, A deodorizing device comprising a switching means to which a signal is given to rotate a fan motor forward or reverse.

(e) Deodorization in which the adjustment means comprises the sensor, the comparison means, and a control means for stopping or reducing ozone generation by the ozone generator based on the comparison result of the comparison means. Device.

[0082]

Effects of the Invention: According to the deodorizing method and deodorizing device of the present invention, deodorizing with ozone and removing odor components with an adsorbent are combined, so that the deodorizing space can be efficiently deodorized in a short time and over a long period of time. Can deodorize.

[0083]

EXAMPLES The present invention will be explained in more detail below based on comparative examples and examples.

Comparative Example 1 This is a room in a building with an internal volume of 127 m3, carpeted and completely covered with curtains.
The room where 10 people eat lunch every day was deodorized. In this room, odors from food permeate the carpet, walls, ceiling, etc., and all five monitors can detect food odors, mainly miso soup-like odors.

A deodorization test was conducted by installing only the adsorption deodorization device shown in FIG. 2 among the deodorization devices in the center of this room. That is, one electrostatic filter (manufactured by Sumitomo 3M Co., Ltd., product name G0115), BET specific surface area 1200 m2 /g
40 activated carbon honeycombs (300 cells/in2, size 84 mm x 44 mm x height 20 mm), a drug-supported activated carbon honeycomb in which 15% by weight of phosphoric acid was supported on the 40 activated carbon honeycombs, and an air blowing capacity of 5 m3/min. An adsorption deodorization device equipped with a cross-flow fan was installed. The adsorption deodorization device is set on a timer from 10:00 to 1:00 every day.
It was operated intermittently for a week under conditions of 7 hours until 7 o'clock.
When five monitors conducted a sensory test, one person judged that the deodorizing effect was recognized, but the other four judged that it had a deodorizing effect.
It was determined that no deodorizing effect was observed. In addition, when a sensory test was conducted in the same manner as above on another day, all five people judged that the deodorizing effect was not recognized.

This seems to be because this device cannot completely deodorize the odor components that have penetrated the room, and the odor components gradually dissipate.

Comparative Example 2 In the center of the same room as Comparative Example 1, only the ozone dispersion deodorizing device shown in FIG. 6 was installed. That is, a silent discharge ozone generator with an ozone generation capacity of 1000 mg/hr in dry air, and a BET specific surface area of 1200 m2 constituting the catalyst layer.
/g activated carbon honeycomb (300 cells/in2, size 84mm x 44mm x height 20mm) 24 sheets, 10
An ozone dispersion deodorization device equipped with a reversible axial fan with a blowing capacity of m3/min was installed. In addition, this ozone dissipation deodorization device has 20L/20L/20L/L in the electrode of the ozone generator.
In order to pre-treat the air supplied to the air compressor and ozone generator, acid-supported activated carbon pellets (carrying amount of phosphoric acid of 1
5% by weight), a first timer to rotate the reversible fan forward and cause the ozone generator to generate ozone, and a first timer to reverse the fan and stop the ozone generator from generating ozone. A second timer was provided to allow the

Using this device, by turning on the main body of the device, the first timer is turned on, the fan is rotated in the normal direction, and the air compressor and ozone generator are turned on, and the indoor air is converted into activated carbon honeycomb. →Ozone generator →Flowed in the direction of the fan, and ozone was diffused for 5 hours. Then, after the operating time of the first timer has elapsed, the second timer is turned on to reverse the fan and turn the air compressor and ozone generator on.
As an FF, indoor air was flowed in the direction of the fan → ozone generator → activated carbon honeycomb, and unreacted ozone was decomposed for 2 hours. Note that when the set time of the second timer has elapsed, the second timer is turned off and the operation of the device is stopped.

[0089] Then, the above-mentioned ozone diffusion deodorizing apparatus was started operating at 2:00 pm after lunch. In addition, when the indoor ozone concentration was measured with an ozone meter over time,
It was as follows.

Elapsed time (hr) 0 1
2 3 4 5 6
7 Ozone concentration (ppm) 0 0
．． 76 0.79 0.79 0.80 0.
81 0.02 0 At 9 o'clock the next day, a sensory test was conducted by five monitors, and all of them judged that they could not feel the odor. However, one week later, a sensory test was conducted again by five monitors, and all of them clearly recognized the food odor.

[0091] In this deodorization test, although the operation of the deodorization device was able to oxidize and deodorize the odor components that had permeated indoor materials, food odors that re-occurred during the following week did not float or permeate. It is thought that the odor was caused by the gradual dissipation of odor components that had not yet been oxidized.

Example 1 The ozone diffusion deodorizing device used in Comparative Example 2 was operated for 7 hours in the same manner as in Comparative Example 2, and the same room as in Comparative Example 1 was treated. From the next day, the adsorption deodorizing apparatus of Comparative Example 1 was operated intermittently for 7 hours from 10:00 to 17:00 every day for one week. When five monitors conducted a sensory test every day for the past week, none of them noticed any odor and recognized the high deodorizing effect.

Example 2 The same room as in Comparative Example 1 was treated by using the ozone deodorizing device used in Comparative Example 2 to perform ozone diffusion for 1 hour and ozone decomposition for 30 minutes. The operation started at 2:00 p.m. after lunch. From the next day, the adsorption deodorization device of Comparative Example 1 was used.
The vehicle was operated intermittently for 7 hours from 10:00 to 17:00 every day for one week. When five monitors conducted a sensory test every day for the past week, none of them noticed any odor and recognized the high deodorizing effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view showing one embodiment of an ozone dissipating deodorizing device constituting the device of the present invention.

FIG. 2 is a schematic vertical cross-sectional view showing one embodiment of an adsorption deodorizing device constituting the device of the present invention.

FIG. 3 is a block diagram showing the electrical configuration of the ozone diffusion deodorizing device of the present invention.

FIG. 4 is a block diagram showing another electrical configuration of the ozone deodorizing device that constitutes the deodorizing device of the present invention.

FIG. 5 is a schematic plan view showing the deodorizing device of the present invention.

FIG. 6 is a schematic plan view showing another ozone dissipating deodorizing device constituting the deodorizing device of the present invention.

FIG. 7 is a schematic vertical sectional view showing another embodiment of the deodorizing device of the present invention.

[Explanation of symbols]

1,51...Ozone diffusion deodorizing device 3, 73, 76...flow path 6,56...Catalyst layer 7,57...Ozone generator 8, 49, 58...Fan 11,61...Acid-supported adsorption layer 41...Adsorption deodorization device 43...Flow path 46...Dust filter 47...Adsorption layer 48...Drug-supporting adsorption layer

Claims (2)

[Claims] [Claim 1] Ozone is diffused into a deodorizing treatment space to react with odor components, and then unreacted ozone is decomposed by a catalyst and odor components remaining in the space are removed by an adsorbent. Deodorization method. [Claim 2] At least a ventilation means in the flow path;
an ozone dissipating section equipped with an ozone generator, an ozone decomposition section capable of blowing air and equipped with a catalyst layer that decomposes ozone, and an adsorption removal section capable of blowing air that removes odor components remaining in the space using an adsorption layer. , the blowing means includes at least one fan that sends air to the ozone dissipation section and the ozone decomposition section in both forward and reverse directions, and selection means that selects the blowing direction, and the ozone generator includes the A deodorizing device characterized in that it is connected to an adjusting means that adjusts the amount of ozone generated in conjunction with a selecting means.