JP2017023897A - Deodorization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorization device which quickly responds to fluctuation of generation amount of gas without making the size of the device larger even when the amount of generation of gas containing an odorous component is temporally fluctuated and can remove the odorous component having a low threshold of odor intensity stably at all times.SOLUTION: A deodorization device 10 includes: a box body 12 provided with an openable and closable window 11 which uses a transparent member on the front side; a deodorization filter 16 arranged on a vertical direction middle part on an inner part of the box body 12; a gas inlet 17 which exists on a lower part position of the box body 12 and introduces gas containing an odorous component therethrough; and a gas outlet 18 which exists on an upper part position of the box body 12 and exhausts the gas passing through the deodorization filter 16 to an external part therethrough. Therein, the deodorization filter 16 includes a buffer adsorption material 20 which performs adsorption or release of the odorous component in the gas entering from the gas inlet 17 and suppresses fluctuation of odorous component content, and an odor decomposition material 21 which is arranged on an upper part of the buffer adsorption material 20, catches the odorous component in the gas sent from the buffer adsorption material 20 and decomposes the odorous component with a photocatalyst.SELECTED DRAWING: Figure 3

Description

For example, the present invention can be applied to a gas containing an odor component having a low odor intensity threshold (such as amines, sulfur compounds, aldehydes, etc.) (easily perceived as bad odor), even if the generation amount varies with time. The present invention relates to a deodorizing apparatus that efficiently removes components from gas.

As a purification device for purifying contaminated air containing odorous components, a pollutant removing member containing a photocatalyst such as titanium oxide and an adsorbent such as zeolite, and a duct type hollow structure provided with an opening covered with a light transmitting member It is placed inside the object, the contaminated air is introduced into the duct type hollow structure, and the contained odor component is removed by the pollutant removing member in the process of passing the contaminated air inside the duct type hollow structure (photocatalyst Have been proposed (see, for example, Patent Documents 1 and 2).

JP 2012-77997 A JP 2007-209594 A

In general, contaminated air containing an odor component contains a specific odor substance for each source. For this reason, even if it is attempted to remove odor components from the contaminated air using a contaminant removing member containing a photocatalyst and an adsorbent, odor components that are difficult to adsorb on the adsorbent and odor components with a low decomposition rate by the photocatalyst are included. If so, a part of the odor component is discharged from the purification device without being removed. If the odor component contained in the air exhausted from the purification device includes an odor component having a low odor intensity threshold, such as amines, sulfur compounds, aldehydes, etc., it is substantially contaminated air. Therefore, it is determined that the purification is not sufficiently performed.

Therefore, it is conceivable to sufficiently secure the contact time between the odor component and the adsorbent and the decomposition time of the odor component by elongating the duct type hollow structure and arranging a large amount of the contaminant removing member therein. However, the purification device becomes large, and problems such as an increase in device manufacturing cost and restrictions on the installation location arise. In addition, when polluted air is generated continuously for 24 hours, the photocatalyst does not function during rainy weather or at night, so that there is a problem that odor components cannot be decomposed and removed. Furthermore, for the source where the amount of odorous components suddenly increases suddenly, the capacity of the purification device must be designed according to the maximum amount of odorous components, which increases the economic burden. There is.

The present invention has been made in view of such circumstances, and it is possible to quickly increase the size of an apparatus even if the amount of generation varies with time with respect to a gas containing odorous components discharged from various sources. Accordingly, an object of the present invention is to provide a deodorizing device capable of always stably and efficiently removing odor components having a low threshold of odor intensity.

The deodorization apparatus according to the present invention that meets the above-mentioned object is a box provided with an openable and closable window using a transparent member on the front side, and a deodorization filter disposed in the middle in the vertical direction inside the box, A gas inlet for introducing a gas containing an odor component at a lower position of the box, and a gas outlet for discharging the gas passed through the deodorizing filter to the outside at an upper position of the box. A deodorizing device,
The deodorizing filter is disposed on the buffer adsorbent, the buffer adsorbent that adsorbs or releases the odor component in the gas entering from the gas inlet and suppresses the fluctuation of the odor component content, and the buffer adsorbent. And an odor decomposition material that decomposes the captured odor component with a photocatalyst.

In the deodorizing apparatus according to the present invention, the deodorizing filter includes a buffer adsorbent that suppresses fluctuations in the odor component content by adsorbing or releasing the odor component in the gas entering from the gas inlet. Without increasing the size, it is possible to respond quickly even if the generation amount of the odor component fluctuates at the generation source, and to stably remove the odor component continuously.
Also, by passing the gas through the deodorizing filter, the flow rate of the gas is reduced to ensure the contact time between the odor component and the odor decomposition material, so that the capture of the odor component in the odor decomposition material is promoted and the photocatalyst It is possible to efficiently decompose the odor component due to. As a result, for example, odorous components having a low odor intensity threshold such as amines, sulfur compounds, and aldehydes can be efficiently removed from the gas.

It is a side view of the deodorizing apparatus concerning a 1st embodiment of the present invention. (A) is a PP arrow view of FIG. 1, (B) is a QQ arrow view. (A) is a top view which shows the state of the deodorizing filter in a box, (B) is a partial expanded sectional view. It is a side view of the deodorizing apparatus which concerns on the 2nd Embodiment of this invention. (A) is a P'-P 'arrow view of FIG. 4, (B) is a Q'-Q' arrow view of (A). It is a graph which shows the time fluctuation | variation of the VOC density | concentration contained in the gas of the entrance side of the buffer adsorbent in Example 2, and an exit side.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 and 2, the deodorizing apparatus 10 according to the first embodiment of the present invention has a box 12 provided with a window 11 for taking in sunlight that can be opened and closed using a transparent member on the front side. have. As shown in FIGS. 3A and 3B, the inside of the box body 12 includes a plurality of partition members 13 arranged vertically and horizontally, with a gap provided in the middle portion in the height direction of the box body 12, respectively. 14 is divided (divided) into, for example, a plurality of square (or rectangular) frame portions 15 in plan view. Thereby, the space inside the box body 12 and the space inside the box body 12 are in communication with each other via the plurality of frame portions 15.

Further, the deodorizing device 10 includes a deodorizing filter 16 that is disposed in a middle portion in the vertical direction inside the box body 12, that is, in a frame portion 15 formed inside the box body 12 and whose front side is exposed to sunlight, A gas inlet 17 is provided at a lower position of the body 12 and communicates with an inner lower side of the box body 12 to introduce a gas containing an odor component into the lower inner side of the box body 12, and an upper position of the box body 12. The gas outlet 18 communicates with the inside upper side of the box body 12 and discharges the gas that has passed through the deodorizing filter 16 and has flowed out to the inside upper side of the box body 12 to the outside of the box body 12. The gas outlet 18 is connected to a pipe line (not shown) that guides the gas to a chimney that diffuses the gas into the atmosphere.

As shown in FIG. 3B, the deodorizing filter 16 includes a buffer adsorbent 20 and an odor decomposing material 21 that are arranged in layers along the flow direction of the gas that has entered from the gas inlet 17. Here, the buffer adsorbent 20 adsorbs a part of the odor component when the odor component content in the gas is large while allowing the gas to permeate in the thickness direction of the layer (adsorption of the odor component from the gas, This is superior to the release of adsorbed odor components), and when the content of odor components in the gas is low, a part of the adsorbed odor components are released into the gas (the release of adsorbed odor components is This is superior to the adsorption of odorous components from the gas) and suppresses fluctuations in the odorous component content contained in the gas that has passed through the buffer adsorbent 20. Therefore, the adsorption capacity of the odor component by the buffer adsorbent 20 and the ability of decomposing the odor component by the odor decomposition material 21 that is disposed above the buffer adsorbent 20 and captures the odor component in the gas sent from the buffer adsorbent 20. In combination, the odor component content contained in the gas flowing into the odor decomposer 21 is set to a value within the decomposition capacity range of the odor decomposer 21, thereby stabilizing the odor component contained in the gas. Treatment (decomposition removal) can be performed. Details will be described below.

The box 12 includes, for example, a window mounting frame 22 having an opening to which a plurality of (two in FIG. 2) windows 11 can be opened and closed, and a window mounting frame 22 below the window mounting frame 22. And a side frame portion 24 provided so as to connect each end edge of the window mounting frame 22 and each end edge of the bottom plate 23. Here, the window mounting frame body 22 can be formed of, for example, a metal such as aluminum, an aluminum alloy, or stainless steel, and the bottom plate 23 and the side frame portion 24 can be formed of, for example, a fiber reinforced resin. The size of the box 12 is not particularly limited, and is appropriately set according to the installation location, the amount of gas containing odor components to be processed, and the like. In addition, when using aluminum or aluminum alloy for the raw material of the window attachment frame 22, in order to prevent corrosion of aluminum or aluminum alloy, it is preferable to perform alumite treatment or boehmite treatment.

The window 11 is formed of, for example, a transparent plate 25 formed of a transparent member (transparent tempered glass, transparent resin, etc.) and a metal (same material as the window mounting frame 22) that holds the peripheral edge of the transparent plate 25. And a rectangular window frame 26. One side of the window frame 26 is attached to the opening of the window attachment frame body 22 so as to be rotatable outward through a hinge, so that the window 11 can be opened and closed. Reference numeral 27 denotes a latch for fixing the window frame 26 of the closed window 11 to the window mounting frame body 22, and reference numeral 28 denotes a hook for fixing both ends to the window frame 26 and the window mounting frame body 22. It is a fixing member that supports the opened window 11.

As shown in FIGS. 2A and 2B, the gas inlet 17 is arranged with the axial direction parallel to the bottom plate 23, and is connected to a connecting portion 29 connected to a front end portion of a gas conveyance pipe (not shown) and upstream. The side is connected to the connecting portion 29, the downstream side is connected to the opening 30 formed in the bottom plate 23 of the box body 12, and the flow direction of the gas that has entered from the connecting portion 29 is bent and blown into the lower inside of the box body 12 Part 30a. With such a configuration, the gas flow direction can be changed at the gas inlet 17, and the flow rate of the gas flowing into the lower inside of the box 12 can be reduced.

As shown in FIG. 1, the box 12 has a gap below so that a gas inlet 17 can be provided at a lower position of the box 12, and sunlight enters the box 12 from the window 11. In order to uniformly enter, for example, the longitudinal direction of the box 12 is directed in the east-west direction, and the normal line of the window 11 is inclined on the south side with respect to the vertical line set up at the installation location. It is placed. Here, the inclination angle when the box 12 is inclined is, for example, in the range of 10 ° to 50 °, and is preferably set as appropriate according to the place (latitude) used, the season, and the like. Reference numerals 32 and 33 are leg members that are respectively connected to both sides of the tilt base 31 in the width direction (a direction orthogonal to the longitudinal direction) and adjust the tilt angle of the tilt base 31. It is a fixed member that is attached to the upper end side of the members 32 and 33 and that contacts the side frame portion 24 of the box 12 placed on the tilting table 31 to position the box 12.

As shown in FIG. 3 (B), for example, a net-like plate 36 (for example, having a thickness of 5) made of aluminum (may be made of an aluminum alloy) is formed on the bottom of the frame portion 15 (lower end surfaces of the partition members 13 and 14). 15-15 mm, and the mesh spacing is 2-8 mm). The buffer adsorbent 20 is, for example, meshed via a non-woven fabric 37 made of polyester (an example of a breathable sheet) having an opening ratio of 30-80%. It is disposed on the plate 36. Here, in order to prevent corrosion of the mesh plate 36, it is preferable to subject the surface layer of the mesh plate 36 to alumite treatment or boehmite treatment.

The buffer adsorbent 20 has a characteristic of adsorbing odorous components in gas, for example, pellets obtained by molding powders of adsorbents such as activated carbon, zeolite, sepiolite, and silica gel into a predetermined shape (for example, a diameter of 2 to 6 mm, A cylindrical shape having a length of 3 to 15 mm and a spherical shape having a length of 3 to 5 mm can be configured in a layered manner with respect to the gas flow direction. Since the buffer adsorbent 20 is disposed on the mesh plate 36 via the nonwoven fabric 37, it is possible to prevent the pellets constituting the buffer adsorbent 20 from falling off the mesh of the mesh plate 36. Furthermore, the nonwoven fabric 37 is also arranged on the upper surface of the buffer adsorbent 20. Thereby, the upper surface of the pellet forming the uppermost layer can be flattened, and the odor decomposing material 21 can be easily disposed on the buffer adsorbent 20.

In addition, it is preferable to select the kind of pellet which comprises the buffer adsorption material 20 according to the composition of the odor component contained in gas, and in the case of the gas containing a plurality of odor components, the odor intensity threshold is low. A pellet made of an adsorbent that is particularly excellent in adsorptivity to components and a pellet made of an adsorbent that is excellent in adsorptivity to a wide range of odor components are used in combination. For example, when the odor component is a volatile organic substance (VOC), a lower fatty acid, or an amine, it is effective to use pellets using zeolite or sepiolite as the adsorbent, and the odor component is an aldehyde. When aldehydes are generated as intermediate products in the decomposition process, it is effective to use pellets using zeolite as an adsorbent. When the odor component is a sulfur compound, it is effective to use pellets using activated carbon or activated manganese dioxide as the adsorbent.

The odor decomposition material 21 has a characteristic of adsorbing an odor component in gas, for example, an adsorbent such as activated carbon, zeolite, sepiolite, silica gel or the like in a predetermined shape (for example, 1 to 4 mm in diameter and 2 to 6 mm in length). And pellets formed by partially fixing the photocatalyst to the surface thereof are arranged in layers in the gas flow direction. Then, as shown in FIG. 3B, the odor decomposition material 21 is made of a net case 39 (for example, a height of 5 to 15 mm and a mesh interval of 2 to 8 mm) made of aluminum (may be made of an aluminum alloy). It is stored. Here, in order to prevent corrosion of the mesh case 39, it is preferable to perform alumite treatment or boehmite treatment on the surface layer of the mesh case 39. Further, a gas seal member 38 (for example, a silicone resin packing) is filled between the mesh case 39 and the frame portion 15.

In the odor decomposing material 21, in the pellet existing on the front side irradiated with sunlight, the odor component adsorbed by the photocatalyst fixed to the surface of the pellet is decomposed, so the thickness of the odor decomposing material 21 (reticulated case) (The thickness of the pellet packed layer in 39) does not directly affect the decomposition ability of odor components, but in order to stably form a continuous surface layer irradiated with sunlight in the odor decomposition material 21 The thickness of the pellet packed layer is, for example, 5 to 10 mm.
Moreover, it is preferable to select the kind of the pellet which comprises the odor decomposition material 21 according to the composition of the odor component contained in the gas, and in the case of the gas containing a plurality of odor components, the odor intensity threshold is low. A pellet made of an adsorbent that is particularly excellent in adsorptivity to components and a pellet made of an adsorbent that is excellent in adsorptivity to a wide range of odor components are used in combination. For example, when the odor component is a volatile organic substance, a lower fatty acid, or an amine, it is effective to use a pellet using zeolite or sepiolite as an adsorbent, and when the odor component is an aldehyde or decomposition process When aldehydes are generated as an intermediate product, it is effective to use pellets using zeolite as an adsorbent. When the odor component is a sulfur compound, it is effective to use pellets using activated carbon or activated manganese dioxide as the adsorbent.

Here, the internal volume of the box 12 and the usage amounts of the buffer adsorbent 20 and the odor decomposing material 21 constituting the deodorizing filter 16 are determined by the following procedure, for example.
When the configuration of the odor decomposition material 21 is determined, the deodorizing ability per unit area of the odor decomposition material 21 irradiated with sunlight (capacity taking into consideration the adsorption performance of odor components and the decomposition rate) can be predicted. 1) required when the odor component content contained in the gas that has passed through the odor decomposing material 21 is equal to or lower than the target value. 1) The upper limit value of the flow velocity of the gas flowing into the odor decomposing material 21; ) Obtain the upper limit value of the odor component of the odor component contained in the gas based on the deodorizing ability.
Next, all the gas flowing out from the generation source passes through the odor decomposing material 21 and flows to the outside, so that sunlight enters from the relationship between the flow rate of the gas flowing into the odor decomposing material 21 and the amount of gas flowing out from the generating source. The total surface area (total flat cross-sectional area of the frame portion 15) of the odor decomposition material 21 to be obtained is obtained. Thereby, the size (inner plane cross-sectional area) of the box 12 is determined.
On the other hand, when the total surface area of the odor decomposing material 21 is determined, the total surface area of the buffer adsorbing material 20 disposed in the frame portion 15 is determined, so that the unit thickness of the buffer adsorbing material 20 is further determined by determining the configuration of the buffer adsorbing material 20. Can be predicted. Moreover, if the plane cross-sectional area inside the box 12 is determined, the gas flow velocity in the lower inside of the box 12 is determined from the amount of gas flowing out from the generation source. As a result, when the maximum value of the odor component content contained in the gas flowing out from the generation source flows into the odor decomposition material 21, it further flows out from the generation source so that it becomes the odor component upper limit at most. When the gas flows into the odor decomposition material 21, the thickness of the buffer adsorbent 20 disposed in the frame portion 15 is determined so that the flow velocity upper limit is reached at the fastest.

Then, the effect | action of the deodorizing apparatus 10 which concerns on the 1st Embodiment of this invention is demonstrated.
As shown in FIGS. 3 (A) and 3 (B), in the frame portion 15, there are a layer of the buffer adsorbent 20 and a layer of the odor decomposing material 21 accommodated in the mesh case 39 along the gas flow direction. Further, since the gas seal member 38 is filled between the mesh case 39 and the frame portion 15, the gas blown into the lower inside of the box 12 is absorbed by the buffer adsorbent 20. The gas always passes through the layer and flows into the mesh case 39, that is, into the layer of the odor decomposing material 21, and the gas that has passed through the layer of the odor decomposing material 21 flows out to the upper inside of the box 12.

By providing the buffer adsorbent 20 layer upstream of the odor decomposing material 21 layer, when the gas permeates the buffer adsorbent 20 layer and the gas contains a large amount of odor component, the odor component Is adsorbed on the buffer adsorbent 20 (the amount of adsorption of the odor component contained in the gas to the buffer adsorbent 20 is released from the buffer adsorbent 20 by the adsorbed odor component adsorbed on the buffer adsorbent 20 ( When the content of the odor component contained in the gas is small), a part of the adsorbed odor component adsorbed on the buffer adsorbent 20 is released from the buffer adsorbent 20 (The adsorbed odor component adsorbed on the buffer adsorbent 20 is released from the buffer adsorbent 20 and mixed into the gas is the amount of the odor component contained in the gas with respect to the buffer adsorbent 20). More than adsorption amount Since variation of odorous content is suppressed to be contained in the gas passing through the layer of cushioning adsorbent 20.

For this reason, the odor component contained in the gas flowing into the layer of the odor decomposing material 21 by combining the adsorption capability of the odor component by the layer of the buffer adsorbing material 20 and the ability of capturing and decomposing the odor component by the layer of the odor decomposing material 21. By setting the component content to a value within the decomposition capacity range of the layer of the odor decomposing material 21, even if the amount of gas generated at the generation source fluctuates greatly (abrupt increase), the box 12 ( The deodorizing filter 16) is not increased in size, and the gas is not temporarily stored in a tank or the like, and the stable decomposition (removal) of the odor component is continuously performed in response to the fluctuation of the gas generation amount. Can be performed.

Here, by passing the gas through the odor decomposition material 21, the gas flow rate is reduced and the contact time between the odor component and the odor decomposition material 21 is ensured, so that the capture of the odor component in the odor decomposition material 21 is promoted. At the same time, the decomposition time of the odor component by the photocatalyst can be secured. As a result, for example, odorous components having a low odor intensity threshold such as amines, sulfur compounds, and aldehydes can be efficiently removed from the gas.
Further, when the odor component content contained in the gas is reduced, the odor component adsorbed on the pellets constituting the buffer adsorbent 20 is separated and mixed into the gas. Is done autonomously. Moreover, in the odor decomposition material 21, since the odor component concentration is lowered by decomposing and removing the odor component in the front side pellet irradiated with sunlight, the odor component concentration is reduced between the front side pellet and the back side pellet. A gradient is generated, and the odor component adsorbed on the back pellet moves toward the front pellet and is adsorbed. For this reason, also in the odor decomposition material 21, the regeneration process of the odor decomposition material 21 is autonomously performed.

The deodorizing apparatus 40 according to the second embodiment of the present invention shown in FIGS. 4 and 5 has a gas outlet 47 having a side frame of the box 41 as compared with the deodorizing apparatus 10 according to the first embodiment. A plurality of open passages 46 formed on the upper side of the portion 42, and flanges 44, 45 projecting outward along the outer periphery of the window mounting frame 43 and bent forward at the lower end of the window mounting frame 43. It is characterized by having. For this reason, the same code | symbol is attached | subjected to the same component as the deodorizing apparatus 10, and description is abbreviate | omitted. It is also possible to provide a flange on the upper side of the outer periphery of the window mounting frame and provide an open passage between the box and the window mounting frame.

By providing the eaves 44 and 45 at the lower end of the window mounting frame 43, it is possible to prevent rainwater from entering the box 41. Furthermore, it is preferable to provide a filter for preventing intrusion of dust on the outlet side of the open passage 46. Here, in order to diffuse the gas into the atmosphere from the upper side of the box body 41, for example, the gas is forced to flow into the box body 41 by a blower, and the gas pressure in the box body 41 is always kept at a positive pressure. There is a need to. As a result, there is a steady flow of gas in the box 41, and the regeneration processing in the buffer adsorbent 20 and the odor decomposing material 21 is reliably performed.

Example 1
Inside the box with an inner vertical dimension of 2790 mm, an inner horizontal dimension of 1210 mm, and an inner height of 350 mm, a partition member is arranged vertically and horizontally in the middle of the height direction, and 16 frame parts are shown in plan view. An aluminum mesh plate (interval between meshes of 3 mm) was attached to the bottom of the frame and anodized. Next, a non-woven fabric made of polyester having an opening ratio of 30 to 80% is placed on the mesh plate exposed in the frame portion, and a cylindrical zeolite pellet having a diameter of 2.5 mm and a length of 15 mm is formed thereon. Filled with 30 mm thick zeolite pellet layer, and the zeolite pellet layer is filled with 110 mm thick columnar activated carbon pellets with a diameter of 2 mm and a length of 1 to 5 mm to form a buffer adsorbent. did. Furthermore, a non-woven fabric made of polyester having an opening ratio of 30 to 80% is disposed on the buffer adsorbent, and a high-speed frame is formed on the surface of a cylindrical sepiolite pellet having a diameter of 2.5 mm and a length of 5 mm. The odor decomposition material produced by providing the photocatalyst layer of titanium dioxide by thermal spraying was disposed in a thickness of 10 mm. And the gas inlet was provided in the lower position of the box, and the gas outlet was provided in the upper position of the box, and the deodorizing apparatus was produced. The odor decomposing material is stored in an alumite-treated aluminum mesh case (mesh spacing is 3 mm).

When the sensory test of the gas containing VOC discharged from the painting factory and the gas flowing in from the gas inlet of the deodorizer and discharging the gas from the gas outlet is performed, the gas having an odor concentration of 10000 has an odor concentration of 1760. The gas was reduced (removal rate 82%), and the gas having an odor concentration of 7000 was reduced to 1000 (removal rate 86%).

(Example 2)
The odor decomposition material was removed from the deodorizing apparatus used in Example 1, and while measuring the VOC concentration (ppm) of the gas containing VOC discharged from the coating factory, the gas was introduced from the gas inlet and passed through the buffer adsorbent. The VOC concentration in the gas discharged from the gas outlet was measured. A commercially available VOC monitor was used for measuring the VOC concentration. The measurement results are shown in FIG.
From FIG. 6, when the VOC concentration in the gas flowing into the deodorizing device fluctuates in a range of about 130 to 360 ppm, the VOC concentration contained in the gas flowing into the odor decomposition material (that is, the gas at the gas outlet) is about 160. It can be seen that it fluctuates in the range of ˜230 ppm. Therefore, in consideration of the results of the sensory test in Example 1, by providing a buffer adsorbent, the fluctuation of the VOC concentration in the gas flowing into the odor decomposition material can be reduced to the fluctuation within the processing capacity range of the odor decomposition material. Was confirmed.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
Further, the present invention also includes a combination of components included in the present embodiment and other embodiments and modifications.
Moreover, you may provide the light irradiation means which activates a photocatalyst by irradiating light (light of the wavelength of visible light region to the ultraviolet region) on the upper surface side of an odor decomposition material in the upper part in a box. Thereby, the deodorizing apparatus can be operated even in a situation where the photocatalyst is not activated at night or in the rain.

The buffer adsorbent is disposed on the mesh plate disposed at the bottom of the frame portion through the breathable sheet. However, the buffer adsorbent is accommodated in the mesh container directly or through the breathable sheet, and the buffer adsorbent is disposed. You may place the net-like container which accommodated on the net-like board. Further, a gas seal member may be filled between the mesh container and the frame portion.
Furthermore, you may decompose | disassemble some odor components contained in gas by irradiating ultraviolet rays with respect to the gas which flows in into the gas inlet_port | entrance of a deodorizing apparatus. By decomposing a part of the odor component in advance, it is possible to prevent the decomposition treatment of the odor component from being concentrated on the deodorization filter, and it is possible to reliably remove the odor component by the deodorization device.

10: Deodorizing device, 11: Window, 12: Box, 13, 14: Partition material, 15: Frame, 16: Deodorizing filter, 17: Gas inlet, 18: Gas outlet, 20: Buffer adsorbent, 21: Odor Decomposing material, 22: window mounting frame, 23: bottom plate, 24: side frame, 25: transparent plate, 26: window frame, 27: hook, 28: fixing member, 29: connecting portion, 30: opening , 30a: guiding part, 31: tilting table, 32, 33: leg member, 34, 35: fixing member, 36: mesh plate, 37: non-woven fabric, 38: gas seal member, 39: mesh case, 40: deodorizing device, 41: box, 42: side frame, 43: window mounting frame, 44, 45: trough, 46: open passage, 47: gas outlet

Claims (10)

A box body provided with an openable and closable window using a transparent member on the front side, a deodorizing filter disposed in an intermediate portion in the vertical direction inside the box body, and a odor component at a lower position of the box body A deodorizer having a gas inlet for introducing a gas containing gas, and a gas outlet at an upper position of the box for discharging the gas that has passed through the deodorizing filter to the outside,
The deodorizing filter is disposed on the buffer adsorbent, the buffer adsorbent that adsorbs or releases the odor component in the gas entering from the gas inlet and suppresses the fluctuation of the odor component content, and the buffer adsorbent. A deodorizing apparatus comprising: an odor decomposing material that captures an odor component in a gas sent from a gas and decomposes the captured odor component with a photocatalyst. 2. The deodorizing apparatus according to claim 1, wherein a pipe for discharging gas to the outside is connected to the gas outlet. 2. The deodorizing apparatus according to claim 1, wherein the gas outlet has an open passage formed on an upper side of the box body or between the box body and a window mounting frame body of the window. Deodorizing device. The deodorizing apparatus according to any one of claims 1 to 3, wherein the inside of the box is partitioned into a plurality of square or rectangular frame portions in plan view, and a gas flow is provided in each frame portion. The deodorizing apparatus, wherein the buffer adsorbent and the odor decomposing material are arranged in layers along a direction. 5. The deodorizing apparatus according to claim 4, wherein a net-like plate made of aluminum or aluminum alloy is arranged at the bottom of the frame portion, and the buffer adsorbent is arranged on the net-like plate via a breathable sheet. A deodorizing device. 6. The deodorizing apparatus according to claim 4, wherein the odor decomposing material is housed in a net-like case made of aluminum or aluminum alloy. The deodorizing apparatus according to claim 6, wherein a gas seal member is filled between the mesh case and the frame portion. The deodorization apparatus according to any one of claims 1 to 7, wherein the buffer adsorbent increases an adsorption amount of an odor component from the gas with an increase in content of the odor component contained in the gas, A deodorizing apparatus that increases the amount of adsorbed odorous components released into the gas as the content of odorous components contained in the gas decreases. The deodorization apparatus according to any one of claims 1 to 8, wherein the box is placed on an inclined table with a gap below. The deodorization apparatus according to any one of claims 1 to 9, wherein a light irradiation means for activating the photocatalyst by irradiating light on an upper surface side of the odor decomposition material is provided in an upper portion of the box. A deodorizing device.

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