JP2004344753A - Deodorization apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively perform deodorization in a deodorization apparatus in which a gas to be deodorized is introduced into catalyst-housing units having catalyst-housing chambers each housing a catalyst and a light source. <P>SOLUTION: In the deodorization apparatus 1, the gas to be deodorized is introduced into the first and the second intermediate units 5, 6 being catalyst-housing units having catalyst-housing chambers 5s, 6s each housing a photocatalyst 8 and a lamp 9 as a light source; partition panels 7, which are inner walls of the catalyst-housing chamber 5s, 6s, are at least partly formed into a mirror state; and the photocatalyst 8 is formed into a net-like state, bent or curved, and housed in the catalyst-housing chambers 5s, 6s. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a deodorizing device provided in a sewage purification tank or the like.
[0002]
[Prior art]
Conventionally, in a deodorization device provided in a sewage purification tank or the like, a catalyst that promotes decomposition of a substance causing odor is stored, and a passage through which a gas to be deodorized passes is meandered to achieve effective deodorization. Is known (for example, see Patent Document 1).
[0003]
On the other hand, an arrangement in which the above-described photocatalyst is disposed so as to surround a light source is also known (for example, see Patent Document 2).
[0004]
[Patent Document 1]
JP-A-11-319487 [Patent Document 2]
JP-A-11-197220 [0005]
[Problems to be solved by the invention]
Thus, in the configuration described in Patent Document 1, the catalyst is plate-shaped, and the catalyst itself forms a gas passage. In such a configuration, when a photocatalyst is used as a catalyst, a problem may occur that the catalyst cannot be activated effectively because light hits the catalyst in one direction.
[0006]
Further, in the configuration described in Patent Document 2, the catalyst is formed in a cylindrical shape, and the light source is housed inside. In such a configuration, when a plurality of light sources are used, each light source is In the surrounding configuration, a trouble that the time required for manufacturing and the like is increased may occur.
[0007]
The present invention solves the above-described problems, and is configured to more evenly apply light to a photocatalyst to effectively deodorize.
[0008]
[Means for Solving the Problems]
That is, the deodorizing apparatus according to the present invention is configured to introduce a gas to be deodorized into a catalyst storage unit having a catalyst storage chamber that stores a photocatalyst and a light source, and to discharge the gas after performing the deodorization. At least a part of the inner wall of the catalyst storage chamber is formed in a mirror-like shape, and the photocatalyst is formed in a net shape and stored in the catalyst storage chamber in a bent or curved shape.
[0009]
With such a configuration, the photocatalyst is formed in a net shape, and at least a part of the inner wall of the catalyst storage chamber is formed in a mirror surface, and furthermore, the photocatalyst is bent or curved. This makes it possible to more evenly irradiate the photocatalyst with light, and to more effectively deodorize the photocatalyst. Further, by bending or curving the photocatalyst, a larger amount of the net-shaped photocatalyst can be stored in the catalyst storage chamber, and from this point, deodorization can be performed more effectively.
[0010]
As a configuration for more effectively performing deodorization, there is a configuration in which the gas to be deodorized meanders inside the catalyst storage unit. This is because, in such a case, the time during which the gas to be deodorized contacts the catalyst can be extended.
[0011]
Furthermore, depending on the photocatalyst, if it has at least one of the activated carbon storage unit provided with the activated carbon storage chamber in which the activated carbon is stored or the catalyst storage unit provided with the activated carbon storage chamber in addition to the catalyst storage chamber, The odor-causing substances that do not decompose can also be removed by adsorbing the activated carbon.
[0012]
In addition, as a specific example of the light source for activating the photocatalyst, a light source that irradiates the photocatalyst with ultraviolet rays can be given.
[0013]
As a mode for further improving the deodorization efficiency, a top plate forming the upper surface of the catalyst storage unit may be subjected to a waterproof process for preventing water from entering the inside of the catalyst storage unit. In such a case, it is less likely that rainwater or the like enters the inside of the catalyst storage unit and water adheres to the internal photocatalyst, which hinders a chemical reaction for removing a substance causing odor.
[0014]
In addition, at least one of a boundary between the catalyst storage units, a boundary between the catalyst storage unit and the activated carbon storage unit, an inlet for a gas to be deodorized, or an outlet for a gas to be deodorized. If a blower that promotes the flow of the gas is provided, the gas to be deodorized is sucked into the deodorization device, whereby the space in which the deodorization device is provided can be effectively deodorized. Become like
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of the present invention will be described.
[0016]
1 (a) is a plan view, FIG. 1 (b) is a cross-sectional view at the center, FIG. 2 (a) is a front view, and FIG. As shown in the vertical sectional view of the central portion, an inlet 2 having an inlet 2a for introducing a gas to be deodorized, and a first unit 3 which is provided adjacent to the inlet 2 and has a box shape A box-shaped final unit 4 having a discharge port 4a for discharging the deodorized gas, a box-shaped first intermediate unit 5 provided adjacent to the first unit 3, A second intermediate unit 6 having a box shape is provided between the first intermediate unit 5 and the final unit 4. That is, the gas to be deodorized is introduced into the deodorizing device 1 from the inlet 2a, and is introduced into the introduction unit 2, the first unit 3, the first intermediate unit 5, the second intermediate unit 6, and the final unit 4. It is sequentially introduced and discharged from the discharge port 4a. Further, the first unit 3, the first intermediate unit 5, the second intermediate unit 6, and the final unit 4 are formed of glass fiber reinforced polyethylene resin, and have the surface thereof to prevent rainwater or groundwater from entering. A layer of urethane resin is provided to ensure waterproofness and heat retention inside. Further, the deodorizing device 1 is provided in communication with an exhaust port of the septic tank, and deodorizes and discharges air in the septic tank. In this embodiment, three second intermediate units 6 are provided.
[0017]
More specifically, the first unit 3 is provided with a partition plate 7 inside, suspends a plurality of string-like fiber members 3x near the introduction portion 2, and attaches a gas to be deodorized to the fiber members 3x. A gas cleaning chamber 3s having a function of removing dirt, dust, moisture, and the like from the gas by adsorbing dirt, dust, moisture, and the like mixed into the gas is formed. On the other hand, a first activated carbon storage chamber 3t filled with activated carbon is formed at a position near the final unit 4 from the partition plate 7. The first activated carbon storage chamber 3t is filled with a plurality of spherical activated carbons. The activated carbon filled in the first activated carbon storage chamber 3t is made of a highly water-absorbing material in order to further remove moisture from the gas. This first unit 3 has a function as an activated carbon storage unit in the claims.
[0018]
The first intermediate unit 5 is provided with the partition plate 7 at a central portion thereof near the first unit 3 and at a portion near the final unit 4, and has a side wall extending from the partition plate 7 near the first unit 3. The first activated carbon storage chamber 5t is closer, the second activated carbon storage chamber 5u is closer to the side wall from the partition plate 7 closer to the final unit 4, and the space between the two partition plates 7 is a catalyst for storing the photocatalyst 8. The storage room is 5 s. That is, the first intermediate unit 5 has a function as a catalyst storage unit in the claims. Furthermore, in order to lengthen the path of the gas to be deodorized, the partition plate 7 near the first unit 3 is open at the lower side, and the partition plate 7 near the final unit 4 is open at the upper side. .
[0019]
In the present embodiment, the photocatalyst 8 is formed by processing titanium having a surface covered with a titanium oxide film into a net shape as shown in FIG. 3 and further forming a waveform in plan view as shown in FIG. As shown in FIG. 1 and FIG. 2, it is arranged between the partition plates 7. As a light source for activating the photocatalyst 8, an ozone generating light source 9a for irradiating ultraviolet rays to oxygen in the air to generate ozone is provided at a corner of the catalyst storage chamber 5s closer to the first unit 3 and at a final position. It is provided at the corner just before the unit 4. The surface of the partition plate 7, the inner surface of the top plate forming the upper surface of the first intermediate unit 5, the inner surface of the side plate forming the side surface, and the inner surface of the bottom plate forming the bottom surface are mirror-finished. Thus, the light from the ozone generating light source 9a is reflected.
[0020]
The second intermediate unit 6 is provided with a partition plate 7 at an intermediate portion in a plan view inside thereof, a part near the final unit 4 is an activated carbon storage chamber 6t, and a part near the first unit 3 is a photocatalyst 8. The catalyst storage chamber 6s is stored. That is, the second intermediate unit 6 also has a function as a catalyst storage unit in the claims. Further, in order to lengthen the path of the gas to be deodorized, another partition plate 7 is provided at an intermediate portion between the side wall near the first unit 3 and the intermediate partition plate 7, and these two partitions are provided. One of the plates 7 is open at the bottom and the other is open at the top. A photocatalyst 8 similar to that contained in the first intermediate unit is stored in the space between the partition plates 7 and in the space between the side wall near the first unit 3 and the partition plate 7, respectively. At the same time, a black light 9b serving as a light source is applied to a corner of the space near the first unit 3 and a corner near the final unit 4 in order to activate the photocatalyst 8 by irradiating the photocatalyst 8 with ultraviolet rays. Is provided. In addition, the surface of the partition plate 7, the inner surface of the top plate forming the upper surface of the second intermediate unit 6, the inner surface of the side plate forming the side surface, and the inner surface of the bottom plate forming the same bottom surface are mirror-like. It is processed so as to reflect the light from the black light 9b. Note that the number of the second intermediate units 6 may be increased or decreased as needed.
[0021]
The final unit 4 is filled with activated carbon, and the entire internal space is an activated carbon storage room. That is, the final unit 4 has a function as an activated carbon storage unit in the claims.
[0022]
Here, the first activated carbon storage chamber 5t of the first intermediate unit 5, the second activated carbon storage chamber 5u of the first intermediate unit 5, the activated carbon storage chamber 6t of the second intermediate unit 6, and the final unit 4 include: A plurality of spherical activated carbons are filled. The activated carbon filled in the first activated carbon storage chamber 5t of the first intermediate unit 5 is made of a highly water-absorbing material so as to remove as much moisture as possible from the gas to be deodorized. The activated carbon storage chamber 5 u of the unit 5, the activated carbon storage chamber 6 t of the second intermediate unit 6, and the activated carbon filled in the final unit 4 are more effectively deodorized and chemically generated from the odor-causing substance via a photocatalyst. In order to remove a substance and a chemical substance generated by a chemical reaction between a substance causing an odor and ozone, a substance having excellent organic molecule adsorption properties is used.
[0023]
In addition, a blower 10 is provided between the second intermediate units 6 to send the gas inside the deodorizing device 1 toward the outlet 4a and to remove the gas to be deodorized from the space to be deodorized, that is, from the inside of the septic tank. It is sent to the inside of the deodorizing device 1.
[0024]
As described above, in the present embodiment, the photocatalyst 8 forms titanium covered with the titanium oxide film in a net-like shape and also in a wavy shape, so that more photocatalyst in a limited volume is provided. By introducing 8, the area where the photocatalyst 8 contacts the gas to be deodorized can be made larger. In addition, a pair of light sources, that is, an ozone generating light source 9a and a black light 9b, are provided on both sides of the plate surface of the photocatalyst 8 in which the titanium covered with the titanium oxide film is processed into a net shape. Since the partition plate 7 having a mirror-like surface or the inner surfaces such as the side walls of the first and second intermediate units 5 and 6 are arranged on both sides of the plate surface of the photocatalyst 8 processed into a net shape, Light can be irradiated substantially uniformly, and the photocatalyst 8 can be more effectively activated. That is, deodorization can be performed more effectively. In addition, since the photocatalyst 8 is titanium covered with a titanium oxide film, a sterilizing action by the photocatalyst can be obtained.
[0025]
In addition, since the partition plates 7 for partitioning the catalyst storage chambers 5s and 6s for storing the photocatalyst 8 are alternately arranged with the upper portion opened and the lower portion opened, the target plate to be deodorized. By making the gas meander, the time required for the gas to pass through the catalyst storage chambers 5s and 6s can be made longer. That is, since the gas to be deodorized can be brought into contact with the photocatalyst 8 for a longer time, the odor-causing substance can be more effectively removed.
[0026]
Furthermore, in order to prevent infiltration of rainwater and groundwater, the top plate forming the upper surface of the intermediate units 5 and 6, the side wall forming the side surface, and the bottom wall forming the bottom surface are all waterproofed, so that they are stored inside. Water adheres to the photocatalyst 8 and the surface area of the portion functioning as a catalyst is reduced, so that a problem that the progress of the chemical reaction for removing the odor-causing substance is prevented is less likely to occur. In addition, in the gas cleaning chamber 3s of the first unit 3, the fiber member 3x adsorbs dust, dust, moisture, and the like mixed in the gas to be deodorized, and the first activated carbon storage chamber of the first unit 3. Since the 3t and the first activated carbon storage chamber 5t of the first intermediate unit 5 are filled with highly water-absorbing activated carbon, the above-mentioned effects are not easily reduced by moisture in the gas.
[0027]
Since the ozone generating light source 9a is provided as a light source in the catalyst storage chamber 5s of the first intermediate unit 5, the ozone generated by the action of the ozone generating light source 9a reacts chemically with the substance causing odor. Thus, such chemical substances can be more effectively removed. In addition, sterilization using ozone generated by the action of the ozone generation light source 9a can be performed.
[0028]
Next, a second embodiment of the present invention will be described.
[0029]
The deodorizing device a1 according to the present embodiment is mainly used indoors, and has an inlet a21 for introducing a gas to be deodorized as shown in a side sectional view in the center of FIG. a2, an activated carbon storage chamber a3 containing an activated carbon unit a31, a catalyst storage chamber a4 containing a photocatalyst a6 and an ozone generating light source a7, an activated carbon unit a51 and an outlet a52 for discharging deodorized gas. And an exhaust part a5 having the following. That is, the gas to be deodorized is introduced into the deodorization device a1 from the introduction port a21 as shown by the arrow L1 in FIG. 4, and is introduced into the introduction part a2, the activated carbon storage chamber a3, the catalyst storage chamber a4, and the exhaust part a5. And is discharged from the discharge port a52. The introduction section a2, the activated carbon storage chamber a3, the catalyst storage chamber a4, and the exhaust section a5 are provided by being superimposed upward in this order. A caster a10 is provided at the lower end of the deodorizer a1 to facilitate transportation. In the present embodiment, the entire interior of the deodorizing device a1 functions as a catalyst storage unit in the claims.
[0030]
More specifically, the introduction section a2 includes a filter a22 having an action of removing dust, moisture, and the like from the gas introduced into the deodorizing device a1, and a blower a23 for promoting the introduction of the gas.
[0031]
The activated carbon storage chamber a3 is located immediately above the introduction section a2, and houses the activated carbon unit a31 therein as described above. The activated carbon unit a31 is formed by filling spherical activated carbon into a gas-permeable container such as a wire mesh. The activated carbon to be filled in the activated carbon unit a31 of the activated carbon storage chamber a3 is made of a highly water-absorbing material in order to remove as much moisture as possible from the gas to be deodorized. In the present embodiment, a guide plate a32 is provided to guide the gas introduced into the activated carbon storage chamber a3 toward the activated carbon unit a31.
[0032]
Thus, the catalyst storage chamber a4 stores the photocatalyst a6 and the ozone generation light source a7 as described above. The lower end portion and the front upper end portion are opened thereafter, and two partition plates a8 are provided at the center in the height direction so as to be separated from each other in the height direction. The partition plate a8 provided on the upper side has an open rear end, and the partition plate a8 provided on the lower side has an open front end. In the present embodiment, as in the first embodiment described above, the photocatalyst a6 is formed by processing titanium whose surface is covered with a titanium oxide film into a net shape and further forming a waveform in a side view, as shown in FIG. As shown in (2), it is disposed between the lower surface a42 of the catalyst storage chamber a4 and the partition plate a8, between the two partition plates a8, and between the partition plate a8 and the upper surface a41 of the catalyst storage room a4. I have. As a light source for activating the photocatalyst a6, an ozone generation light source a7 that irradiates ultraviolet rays to oxygen in the air to generate ozone is provided. The ozone generation light source a7 has a shape extending in the width direction of the deodorizing device a1, and is near the front end of the lower surface a42 of the catalyst storage chamber a4, near the rear ends of the upper and lower surfaces of the lower partition plate a8, and the upper partition plate. It is provided near the front ends of the upper and lower surfaces of a8 and near the rear end of the upper surface a41 of the catalyst storage chamber a4. The upper and lower surfaces of the partition plate a8, the upper surface a41 of the catalyst storage chamber a4, and the lower surface a42 of the catalyst storage chamber a4 are mirror-finished so as to reflect light from the ozone generation light source a7. ing.
[0033]
The exhaust part a5 has a second activated carbon storage chamber containing the activated carbon unit a51 at the front end thereof as described above, and a blower a53 arranged near the exhaust port a52 to encourage exhaust. The activated carbon filled in the activated carbon unit a51 of the exhaust part a5 was generated by deodorizing more effectively, removing chemical substances generated from the odor-causing substance via the photocatalyst, and chemically reacting the odor-causing substance with ozone. In order to remove a chemical substance, a substance having excellent adsorptivity of organic molecules is used.
[0034]
Further, in the present embodiment, a part of the exhaust gas sent from the blower a53 of the exhaust part a5 is returned to the vicinity of the inlet a21 as shown by an arrow L2 in FIG. A road a9 is further provided. One end of the return path a9 communicates with the vicinity of the middle between the blower a53 and the exhaust port a52, and the other end communicates with the introduction section a2.
[0035]
In the configuration described above, a recirculation path a9 having one end communicating with the exhaust port a52 and the other end communicating with the introduction part a2 is provided. Since the part is introduced again into the path along the arrow L1 and deodorization is performed again, the efficiency of deodorization is improved, and such a deodorizing device a1 can be downsized and placed indoors.
[0036]
Further, since the photocatalyst a6 is formed in a net-like and wavy shape, the effect that the area of the photocatalyst a6 in contact with the gas to be deodorized can be increased as in the first embodiment described above. Obtainable. Further, since the gas is meandering as indicated by the arrow L1 in FIG. 4, the gas to be deodorized can be brought into contact with the photocatalyst a6 for a longer time. In addition, since the upper and lower surfaces of the catalyst accommodating chamber a5 and the partition plate a8 are mirror-shaped, the light from the ozone generation light source a7 can be reflected to irradiate the photocatalyst a6 more evenly. And, since titanium whose surface is covered with a titanium oxide film is used as the photocatalyst a6, the photocatalyst can obtain a sterilizing action by the a6 and sterilize using ozone generated by the action of the ozone generating light source a7. You can also. In particular, a small device that can be placed indoors as in the present embodiment can be suitably used as an air purifier in a hospital or the like.
[0037]
Note that the present invention is not limited to the embodiment described above.
[0038]
For example, a mode in which the gas cleaning chamber, the activated carbon storage chamber, and the catalyst storage chamber are stored in one unit is considered.
[0039]
In addition, the photocatalyst may be formed in a shape bent into a folding screen, a shape curved in an arc shape or an S shape, or the like, in addition to the wave catalyst. This is because even with these shapes, more photocatalysts can be stored.
[0040]
Further, instead of being provided on the ground, it may be provided buried underground, or may be provided mounted on an automobile. In particular, those mounted on an automobile can be suitably used for deodorizing in a night soil transportation vehicle or a mobile toilet.
[0041]
In addition, the specific configuration of each unit is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
[0042]
【The invention's effect】
According to the present invention, since the photocatalyst has a net shape and is bent or curved, and at least a part of the inner wall of the catalyst storage chamber is formed in a mirror surface, the photocatalyst is more uniformly irradiated with light. It is possible to perform deodorization more effectively than the conventional one. Further, by bending or curving the photocatalyst, a larger amount of the net-shaped photocatalyst can be stored in the catalyst storage chamber, and from this point, it is possible to more effectively deodorize compared to the conventional one. Can be.
[Brief description of the drawings]
FIG. 1 is a plan view and a cross-sectional view of a central part of a deodorizing apparatus according to a first embodiment of the present invention.
FIG. 2 is a front view of the deodorizing apparatus according to the embodiment and a vertical cross-sectional view at a central portion.
FIG. 3 is a view showing a photocatalyst used in the deodorizing apparatus according to the embodiment.
FIG. 4 is a side sectional view of a central part of a deodorizing apparatus according to a second embodiment of the present invention.
[Explanation of symbols]
1: Deodorizing device a1: Deodorizing device (catalyst storage unit)
2a, a21... Inlet 4a, a52... Outlet 5... First intermediate unit (catalyst storage unit)
6. Second intermediate unit (catalyst storage unit)
7, a8: Partition plate 8, a6: Photocatalyst 9a, a7: Ozone generating light source 9b: Black light (light source)
10, a22, a53 ... blower

Claims (6)

A gas to be deodorized is introduced into a catalyst storage unit having a catalyst storage chamber containing a photocatalyst and a light source, and the gas is discharged after deodorization. At least one of the inner walls of the catalyst storage chamber is provided. A deodorizing device, wherein the portion is formed in a mirror surface, and the photocatalyst is formed in a net shape and is stored in the catalyst storage chamber in a bent or curved shape. 2. The deodorizing apparatus according to claim 1, wherein a gas to be deodorized meanders inside the catalyst storage unit. 3. An activated carbon storage unit having an activated carbon storage chamber containing activated carbon therein or at least one of the catalyst storage units having an activated carbon storage chamber provided in addition to the catalyst storage chamber. The deodorizing device as described. The deodorizer according to claim 1, 2 or 3, wherein the light source irradiates ultraviolet rays to the photocatalyst. 5. The deodorizing apparatus according to claim 1, wherein the top plate forming the upper surface of the catalyst storage unit is subjected to a waterproofing process for preventing water from entering the inside of the catalyst storage unit. At least one of a boundary between the catalyst storage units, a boundary between the catalyst storage unit and the activated carbon storage unit, an inlet for a gas to be deodorized, or an outlet for a gas to be deodorized. 6. The deodorizing device according to claim 1, further comprising a blower for promoting the flow of air.

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