JP2003275528A - Discharge air treating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge air treating apparatus capable of easily and effectively removing dispersed particles contained in discharge air even in the case that the amount of the discharge air to be a treating object increases. <P>SOLUTION: The discharge air treating apparatus 11 is provided with a water atomizing nozzle 21, a screen member 23, an ozone gas jetting nozzle 25 and a plurality of plate members 27 and 29 in the order from the top inside a box body 13. The plate members 27 and 29 are inclined and arranged so as to cross a vertical direction with a prescribed interval in the vertical direction. On the end part on the lower side of the plate members 27 and 29, a return part 45 bent upwards so as to cross the inclination direction is provided. Water made to pass through the screen member 23 and stored at the end part (return part 45) on the lower side of the plate members 27 and 29 is curled up in a mist shape by the flow of the discharge air made to pass through the screen member 23. The water curled up in the mist shape contacts the discharge air made to pass through the screen member 23 and removes soot from the discharge air. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust air treatment apparatus for removing dispersed particles such as oil smoke or powder contained in exhaust air.

[0002]

2. Description of the Related Art As an exhaust air treatment apparatus of this kind, an injection nozzle for injecting water to exhaust air containing dispersed particles such as oil smoke or powder is provided, and water and exhaust air injected from the injection nozzle are provided. It is known that the dispersed particles contained in the exhaust air are separated and removed by contacting with each other.

[0003]

However, when the amount of exhaust air to be treated increases, it is necessary to take measures such as increasing the amount of water jetted from the jet nozzles or increasing the number of jet nozzles. There are the following problems.

When the amount of water jetted from the jet nozzle is increased, the amount of water used in the device is increased, which results in an increase in running cost such as water bill. When the number of injection nozzles is increased, layout problems such as how to arrange the injection nozzles and the piping to the injection nozzles occur, and the structure becomes complicated. In addition, the cost of the device itself will increase.

The present invention has been made in view of the above points, and the present invention removes dispersed particles contained in exhaust air easily and effectively even when the amount of exhaust air to be treated increases. It is an object of the present invention to provide an exhaust air treatment device capable of performing.

[0006]

An exhaust air treatment apparatus according to the present invention is an exhaust air treatment apparatus for removing dispersed particles contained in exhaust air, which comprises water supply means for supplying water and water supply means. Screen member capable of adhering and retaining the water supplied from the means for a predetermined time and allowing the water to pass therethrough, and storing the water passing through the screen member and storing the water stored by the flow of exhaust air passing through the screen member. And a mist forming means for winding up in a mist form.

In the exhaust air treatment apparatus according to the present invention, first, the water staying on the screen member for a predetermined time comes into contact with the dispersed particles contained in the exhaust air to remove the dispersed particles from the exhaust air. Since the mist forming means is provided, the water stored by passing through the screen member is wound up in a mist by the flow of the exhaust air passing through the screen member. The water that is wound up in a mist by the mist forming means comes into contact with the exhaust air that has passed through the screen member, and removes dispersed particles from the exhaust air. In this way, since the water that has passed through the screen member is used again as water for removing dispersed particles from the exhaust air, it is included in the exhaust air even when the amount of the exhaust air to be treated increases. The dispersed particles can be removed easily and effectively.

Further, the mist forming means includes a plate member which is arranged so as to be inclined so as to intersect with the vertical direction, and a return member for storing water that has passed through the screen member is provided at the lower end of the plate member. It is preferable that a part is provided. With such a configuration, the structure of the mist forming means that can store the water that has passed through the screen member and can wind up the stored water in the form of mist by the flow of the exhaust air that has passed through the screen member is realized simply and at low cost. can do.

Further, it is preferable that the return portion is provided with a plurality of notches formed at a predetermined interval. With this structure, the water stored at the lower end of the plate member can be appropriately formed into a mist with a simple structure.

Further, it is preferable that a plurality of plate members are arranged at a predetermined interval in the vertical direction, and the inclination directions of the plurality of plate members intersect each other. With this configuration, the water that has passed through the screen member comes into contact with the exhaust air that has passed through the screen member at a plurality of locations, and the dispersed particles contained in the exhaust air can be removed even more effectively.

Further, there is further provided a deodorizing means which is disposed between the screen member and the plurality of plate members and which mixes ozone gas with the exhaust air passing through the screen member to deodorize the exhaust air passing through the screen member. preferable.
With such a configuration, the deodorizing means mixes the ozone gas with the exhaust air that has passed through the screen member, decomposes the odor component contained in the exhaust air, and deodorizes. Deodorization by ozone gas (decomposition of odor components) when exhaust air contains a large amount of dispersed particles such as oil smoke or powder.
Is obstructed, a large amount of ozone gas is required, and it takes a long time to decompose the odor component,
It is difficult to efficiently deodorize exhaust air. However, as described above, since ozone gas is mixed with the exhaust air from which the dispersed particles have been removed by the screen member to deodorize, the odor component can be effectively decomposed and deodorized with the minimum necessary ozone gas. it can. As a result, the dispersed particles contained in the exhaust air can be removed and the exhaust air can be effectively deodorized. In addition, due to the arrangement of the plurality of plate members, the passage through which the ozone gas and the exhaust air flow is formed in a meandering shape, and the length thereof becomes long. For this reason,
It takes longer for ozone gas and exhaust air to mix,
More odorous components can be decomposed by ozone gas.

Further, it is preferable that the water supply means includes a water spray nozzle for spraying water toward the screen member in a mist form. When configured in this way, the dispersed particles contained in the exhausted air will be mixed with not only water that stays on the screen member for a predetermined time, but also mist-like water ejected from the water spray nozzle, and the dispersed particles will be dispersed in water. Can be appropriately and surely contacted. As a result, the dispersed particles can be removed more effectively.

The exhaust air treatment apparatus according to the present invention is an exhaust air treatment apparatus for removing dispersed particles contained in the exhaust air, and includes a water spray nozzle for ejecting water in the form of mist and a mist from the water spray nozzle. A screen member capable of adhering and retaining water ejected in a predetermined shape for a predetermined time and allowing water to pass therethrough; and a plate member disposed below the screen member and inclined so as to intersect the vertical direction. The bottom end of the plate member is provided with a return portion for storing water that has passed through the screen member.

In the exhaust air treatment apparatus according to the present invention, first, the dispersed particles contained in the exhaust air are mixed not only with water retained on the screen member for a predetermined time but also with mist-like water ejected from the water spray nozzle. It will be. This makes it possible to bring the dispersed particles into contact with water appropriately and reliably. Then, the water staying on the screen member for a predetermined time comes into contact with the dispersed particles contained in the exhaust air to remove the dispersed particles from the exhaust air. Further, since the plate member is arranged so as to be inclined so as to intersect the vertical direction, the exhaust air that has passed through the screen member flows along the plate member, and the end of the plate member on the lower side is caused by the flow of the exhaust air. In the part, the water stored by the return part is rolled up into a mist. The water that is wound up in the form of mist comes into contact with the exhaust air that has passed through the screen member, and removes dispersed particles from the exhaust air. In this way, since the water that has passed through the screen member is used again as water for removing dispersed particles from the exhaust air, it is included in the exhaust air even when the amount of the exhaust air to be treated increases. The dispersed particles can be removed easily and effectively.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An exhaust air treatment apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example is shown in which the present invention is applied to an exhaust air treatment device that mainly removes oil smoke from exhaust air.

An exhaust air treatment apparatus according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram showing an exhaust air treatment device according to the present embodiment.

A ventilation fan device 7 is provided on a wall portion 5 that divides the room 1 (for example, a kitchen or the like) from the outdoors 3, and the ventilation fan device 7 prevents oil fumes generated from a cooker (not shown) or the like. The contained air is discharged to the outdoor 3 side.

The exhaust air treatment device 11 is provided with a box body 13 having a substantially rectangular parallelepiped shape, and is installed in the outdoor 3 in a vertically long state. The box body 13 is a wall portion 5 using a bracket or the like.
It may be fixed to the surface of the outdoor 3 side, or may be supported against the ground by using a pillar.

An inlet portion 15 on one end side (top side) of the box body 13
Is provided with a flange portion 15a, and the duct 17 is attached to the flange portion 15a with bolts or the like (not shown). The duct 17 has an inlet portion 17a corresponding to the ventilation fan device 7 and an outlet portion 17b corresponding to the exhaust air treatment device 11. As a result, the exhaust air containing oily smoke passes through the ventilation fan device 7 and the duct 17 and then the box body 1
3 will be sent. On the other end side (bottom side) of the box body 13, an outlet section 19 for discharging the air processed by the discharge air processing apparatus 11 is provided.

As described above, when the duct 17 is formed separately from the exhaust air treatment device 11, the exhaust air is taken into the exhaust air treatment device 11 from various directions or angles by changing the shape of the duct 17. There is an effect that it becomes possible. Of course, duct 17 is a box 1
It is also possible to adopt a structure formed integrally with the unit 3.

The exhaust air treatment device 11 includes a water spray nozzle 2
1, screen member 23, ozone gas jet nozzle 25,
Plural (two in the present embodiment) plate members 27, 2
It is equipped with 9 mag. As shown in FIG. 1, the water spray nozzle 21, the screen member 23, the ozone gas ejection nozzle 25, and the plurality of plate members 27 and 29 are arranged in the box body 13 from above in the water spray nozzle 21, the screen member 2 and the water spray nozzle 21.
3, ozone gas ejection nozzle 25, a plurality of plate members 27, 2
They are arranged in the order of 9.

The water spray nozzle 21 is attached to the tip of the water supply pipe 31, and the water W is directed toward the screen member 23.
1 is ejected in the form of mist. The water spray nozzle 21 is arranged to face the screen member 23. Water supply pipe 3
1 is connected to an existing water supply facility via a solenoid valve 33, a regulator 35, etc., and a water spray nozzle 21 ejects tap water. The electromagnetic valve 33 is for controlling whether or not the water W1 is ejected from the water spray nozzle 21.
The regulator 35 is for adjusting the water pressure in the water supply pipe 31, that is, the injection pressure in the water spray nozzle 21 to a desired value. The water spray nozzle 21 preferably spouts the mist-like water W1 so as to supply the water to the substantially entire surface of the screen member 23. Here, the water spray nozzle 21 functions as a water supply means.

The screen member 23 is arranged so as to be inclined so as to intersect with the vertical direction, and the mist-like water W1 ejected from the water spray nozzle 21 can be adhered and retained for a predetermined time and adhered. The structure is such that the accumulated water can pass through. As the screen member 23, a mat member made of natural long fibers such as hemp and coconut, a laminate of a plurality of metal (for example, stainless steel) fine meshes, and the like can be used. In the present embodiment, the screen member 23 is also arranged so as to be inclined with respect to the flow direction of the exhaust air passing through the screen member 23.

A gutter member 37 is disposed near the upper end of the screen member 23, as shown in FIG. The gutter member 37 is formed with a plurality of cutouts 39 at predetermined intervals. A water supply pipe 41 is connected to one end of the gutter member 37, and as will be described later, a part of water collected after passing through the screen member 23 is supplied. The gutter member 37 is provided across the width direction of the box body 13 (screen member 23) and sprays water W2 on the screen member 23.

The ozone gas ejecting nozzle 25 is connected to an ozone gas generating section 43 for generating ozone gas, and ejects and mixes ozone gas OZ with respect to the exhaust air passing through the screen member 23. The ozone gas ejecting nozzle 25 is disposed below the upper end of the screen member 23, and is located at the rear stage of the screen member 23, that is, the screen member 23 when viewed in the flow direction of the exhaust air in the box body 13. It is located between the plate members 27 and 29. It should be noted that the ozone gas ejection nozzle 25 uses the ozone gas O
A tubular member having a plurality of ejection ports for ejecting Z,
It is provided across the width direction of the box body 13. As the ozone gas generation unit 43, an existing ozone gas generation device equipped with an air pump, an ozonizer, a high-voltage power supply, etc. can be used. Here, the ozone gas ejection nozzle 25 functions as a deodorizing means.

The plate members 27 and 29 have a predetermined space in the vertical direction and are arranged so as to be inclined so as to intersect the vertical direction. The inclination direction of the plate member 27 is
The direction of inclination of the screen member 23 is substantially the same.
As a result, it is possible to prevent the exhaust air treatment device 11 (box 13) from becoming long in its entire length (length in the vertical direction), and to make the exhaust air treatment device 11 compact. Further, the plate members 27 and 29 have their inclination directions intersecting each other. As a result, the passage through which the ozone gas OZ and the exhaust air flow is formed in a meandering manner.

As shown in FIG. 3, a return portion 45 bent upward so as to intersect the inclination direction is provided at the lower end of the plate members 27, 29. Due to the return portion 45, the plate members 27 and 29 are configured to store a part of the water that has passed through the screen member 23 at their lower end portions. In the return section 45,
A plurality of cutout portions 46 are provided at a predetermined interval. The return portion 45 may be configured integrally with the plate members 27 and 29, or may be configured as a separate body to form the plate member 2
It may be fixed to 7, 29 by welding or the like. A part of the stored water W3 flows out from the cutout portion 46.

The outlet portion 19 is provided with an ozone decomposition catalyst (not shown) for preventing the ozone gas OZ which has not completely reacted being discharged into the atmosphere.

A screen member 23 is provided on the bottom of the box body 13.
Discharge pipe 47 for discharging the water that has passed and dropped
Are connected. The discharge pipe 47 is connected to an oil separator (oil separation tank) 49 and flows from the bottom to the oil separator 49. The oil separator 49 has an oil adsorbent 51 (for example, granular activated carbon or the like). The water guided to the oil separator 49 is sent to a grease trap (not shown) or the like after the oil is removed by the oil adsorbent 51.

The oil separator 49 is provided with a pump 53. The pump 53 is connected to the water supply pipe 41, and a part of the water that has passed through the oil adsorbent 51 is partially removed by the gutter member 37.
Supply to. As a result, part of the water that has passed through the oil adsorbent 51 is supplied to the gutter member 37 by the pump 53 and is recycled as water W2 that is sprayed on the screen member 23.

Next, the operation of the exhaust air treatment device 11 will be described with reference to FIG. In FIG. 4, the flow of exhaust air is shown by a two-dot chain line. The operation / stop of the exhaust air treatment device 11 (ON / OFF of the ozone gas generation unit 43)
OFF, the opening / closing operation of the solenoid valve 33), the ventilation fan device 7
It is preferable to synchronize with the start / stop of.

Exhaust air containing oily smoke generated in the room 1 is sent to the exhaust air processing device 11 through the duct 17 by the ventilation fan device 7. The oily smoke contained in the exhaust air is
In the upper part of the box body 13, the water spray nozzle 21 mixes with the water W1 ejected in a mist form, and the oil and fat component of the oil smoke comes into contact with the mist water W1 and is cooled and condensed. In this way, the oil and fat components of the oil smoke contact with the water W1 and condense, so that the oil smoke becomes a liquid adhering to the water W1 ejected from the water spray nozzle 21, and is mixed with the ejected water W1 to mix with the screen member 23. A liquid film is formed on top. When the water mist-like water W1 is jetted from the water spray nozzle 21 to the substantially entire surface of the screen member 23, a liquid film is formed on the substantially entire surface of the screen member 23. Accordingly, the substantially entire surface of the screen member 23 can be effectively used as a portion for contacting oil smoke and water.

On the screen member 23, a part of the water that has passed through the oil adsorbent 51 is pumped by the pump 53 to the gutter member 37.
Is supplied to and sprayed. The water film W2 sprinkled from the gutter member 37 also forms a liquid film on the screen member 23. At this time, since the gutter member 37 is formed with a plurality of cutouts 39, the water W2 flows out from the cutouts 39 and is sprayed onto the screen member 23. The water W2 can be surely sprayed.

When the oil smoke that has not been liquefied by the water W1 ejected from the water spray nozzle 21 passes through the screen member 23, its oil and fat components come into contact with and adhere to the liquid film formed on the screen member 23. . Screen member 23
With the passage of time, the upper liquid film becomes water drops and drops onto the plate members 27 and 29, and passes through the screen member 23. Since the screen member 23 is arranged to be inclined, a liquid film is easily formed on the screen member 23, and the area of the screen member 23 is increased,
The part where the oily smoke and water come into contact with each other expands.

The water drops that have dropped onto the plate members 27 and 29 flow on the plate members 27 and 29 and are stored by the return portion 45 because the plate members 27 and 29 are arranged so as to be inclined. At this time, since the plate members 27 and 29 are arranged so as to be inclined so as to intersect with the vertical direction, the exhaust air that has passed through the screen member 23 flows along the plate members 27 and 29, and the flow of the exhaust air flows. As a result, a part of the water W3 stored at the lower ends of the plate members 27, 29 is wound up in a mist shape. Further, since the return portion 45 is provided with a plurality of cutout portions 46, the cutout portion 4
Although water flows out from 6 and falls, the screen member 23
The exhaust air that has passed through becomes a mist. The water W4 in the form of mist comes into contact with the exhaust air that has passed through the screen member 23, and comes into contact with the oil and fat component of the oil smoke contained in the exhaust air to condense the oil and fat component. As a result, the oily smoke becomes a liquid attached to water and drops to the bottom of the box body 13. Here, the plate members 27 and 29 function as mist forming means.

The dropped water (including the oil and fat component removed from the exhaust air) flows into the exhaust pipe 47 from the bottom of the box body 13 and reaches the oil separator 49 provided outside the box body 13. In the oil separator 49, oil and fat components contained in water are separated and removed, and then drained. Further, a part of the water from which the oil and fat components have been separated and removed is supplied to the gutter member 37 by the pump 53, as described above.

As described above, the oil smoke contained in the exhaust air is the water W1 ejected from the water spray nozzle 21, the liquid film on the screen member 23 (the water W1 ejected from the water spray nozzle 21 and the gutter member). Water W2 sprinkled from 37, and water W4 rolled up in a mist form from the lower ends (returning portions 45) of the plate members 27 and 29 to condense,
By adhering to these, it is almost removed from the exhaust air.

The exhaust air passing through the screen member 23 is mixed with the ozone gas OZ ejected from the ozone gas ejection nozzle 25 in the space below the screen member 23 in the box body 13. Due to the mixing of the ozone gas OZ, the odor components contained in the exhaust air are oxidized and decomposed, and the exhaust air is deodorized. At this time, since the plate members 27 and 29 are arranged so as to be inclined as described above, the passage cross-sectional area of the portion through which the ozone gas OZ and the exhaust air flow gradually becomes smaller, and the ozone gas OZ and the exhaust gas are exhausted. It becomes easy to mix with air. Thereby, deodorization of exhaust air (decomposition of odor components) can be promoted, and the amount of odor components remaining without being decomposed can be reduced. Further, the plate members 27, 2
Since the inclination directions of 9 are intersecting with each other, the passage through which the ozone gas OZ and the exhaust air flow is formed in a meandering manner, and its length is lengthened. Therefore, the time when the ozone gas OZ and the exhaust air are mixed becomes long,
More odorous components can be decomposed by ozone gas OZ.

Thus, the exhaust air from which oil smoke has been removed by contact with water and the odor component has been decomposed by the ozone gas OZ is discharged into the atmosphere as the treated air through the outlet 19. The excess ozone gas OZ that could not be completely reacted is converted into oxygen (O ₂ ) by the ozone decomposition catalyst.
Is decomposed into and released into the atmosphere.

As described above, in the exhaust air treatment apparatus 11 of the present embodiment, first, the water that remains as a liquid film on the screen member 23 for a predetermined time comes into contact with oil smoke (oil and fat components) contained in the exhaust air. , Remove oily fumes from the exhaust air. Water W3 that has passed through the screen member 23 and stored at the lower ends (returning portions 45) of the plate members 27 and 29
Is wound up into a mist by the flow of exhaust air that has passed through the screen member 23. The water W4 rolled up in the mist comes into contact with the exhaust air that has passed through the screen member 23, and removes oily smoke from the exhaust air. In this way, the water that has passed through the screen member 23 is
Since it is used again as water for removing oily smoke from the exhaust air, the oily smoke contained in the exhaust air can be easily and effectively removed even when the amount of the exhaust air to be treated increases.

Further, the exhaust air treatment device 11 of this embodiment
In the above, the plate members 27, 29 are arranged so as to be inclined so as to intersect the vertical direction, and the return portion 45 for storing the water that has passed through the screen member 23 is provided at the lower end of the plate members 27, 29. It is provided. As a result, the water that has passed through the screen member 23 is stored and the screen member 23
It is possible to easily and inexpensively realize a configuration in which the water W3 stored by the flow of the exhaust air that has passed through can be wound up in a mist form.

Further, the exhaust air treatment device 11 of the present embodiment.
In the above, the return portion 45 is provided with a plurality of cutout portions 46 that are formed at a predetermined interval. This allows
Water W3 stored at the lower ends of the plate members 27, 29
Can be appropriately and easily formed into a mist with a simple structure.

Further, the exhaust air treatment apparatus 11 of this embodiment
In the above, the plurality of plate members 27, 29 are arranged at a predetermined interval in the vertical direction, and the plurality of plate members 27, 29 are arranged.
Have their inclination directions intersecting each other. This allows
The water that has passed through the screen member 23 comes into contact with the exhaust air that has passed through the screen member 23 at a plurality of locations, and the dispersed particles contained in the exhaust air can be more effectively removed.

Further, the exhaust air treatment device 11 of this embodiment
In the first embodiment, the screen member 23 is disposed between the screen member 23 and the plate members 27 and 29, and the ozone gas OZ is mixed into the exhaust air passing through the screen member 23.
Ozone gas ejection nozzle 2 for deodorizing exhaust air that has passed through
It is equipped with 5. As a result, the ozone gas OZ is mixed with the exhaust air that has passed through the screen member 23, and the odor component contained in the exhaust air is decomposed and deodorized. If the exhaust air contains a large amount of oily smoke, ozone gas OZ
Deodorization (decomposition of odor components) due to
Since a large amount of ozone gas OZ is required and it takes a long time to decompose the odor component, it is difficult to efficiently deodorize the exhaust air. However, as mentioned above,
Since the ozone gas OZ is mixed with the exhaust air from which the oil smoke has been removed by the screen member 23 to deodorize, it is possible to effectively decompose the odor components and deodorize with the necessary minimum amount of ozone gas OZ. As a result, the oily smoke contained in the exhaust air can be removed and the exhaust air can be effectively deodorized. Further, due to the arrangement of the plurality of plate members 27 and 29, a passage through which the ozone gas OZ and the exhaust air flow is formed in a meandering shape, and the length thereof becomes long. Therefore, the time when the ozone gas OZ and the exhaust air are mixed becomes long,
More odorous components can be decomposed by ozone gas OZ.

Further, the exhaust air treatment device 11 of this embodiment
In the above, the water W1 is jetted in the form of mist from the water spray nozzle 21 toward the screen member 23. As a result, the oily smoke contained in the exhausted air mixes with not only the water staying on the screen member 23 for a predetermined time but also the mist-like water W1 ejected from the water spray nozzle 21.
The oily smoke can be brought into proper and reliable contact with water. As a result, the oil smoke can be removed more effectively.

Further, the exhaust air treatment device 11 of the present embodiment.
In this case, the water W1 and W2 are supplied to the screen member 23 from both the water spray nozzle 21 and the gutter member 37, and are supplied to the screen member 23 even when the amount of exhaust air to be treated increases. Water W1, W2
It is possible to easily increase the amount of the oil and the oil smoke contained in the exhaust air can be effectively removed. As a result, the oil smoke can be removed more effectively. Then, the water that has passed through the screen member 23 is collected and supplied to the gutter member 37 as water W2 to be sprayed on the screen member 23, so that the water used for the treatment is recycled, which increases the running cost. Can be suppressed.

Further, the exhaust air treatment device 11 of this embodiment
In the above, the oil separator 49 is provided with the pump 53 that sends the water that has passed through the oil adsorbent 51 to the gutter member 37. As a result, even if the exhaust air contains oil fumes as dispersed particles, it is possible to supply the water from which oil has been removed to the gutter member 37, and to improve the processing efficiency (oil fumes) by recycling the water used for processing. It is possible to suppress a decrease in the removal efficiency).

Further, the exhaust air treatment device 11 of this embodiment
In the above, a plurality of cutout portions 39 are formed in the gutter member 37 at predetermined intervals. Thereby, the water W2 can be appropriately and reliably sprayed on the screen member 23.

The present invention is not limited to the above-described embodiment, but the screen member 23, the water spray nozzle 2
The numbers of the plate members 27 and 29 are not limited to those in the above-described embodiment. Further, the outlet 19 may be provided with a blower for positively discharging the exhaust air inside the box 13. Further, although the return portion 45 is formed by bending the lower end portions of the plate members 27 and 29, it may be formed in a curved shape. Further, the gutter member 37 and the pump 53 need not necessarily be provided. Of course, when the decomposition of the odor component is unnecessary, it is not necessary to provide the ozone gas ejection nozzle 25 and the ozone gas generation unit 43.

Further, in the present embodiment, an example in which the present invention is mainly applied to the exhaust air treatment device 11 for removing oily smoke from exhaust air is shown, but the present invention is not limited to this, and the oily smoke is not limited thereto. It can be applied to the exhaust air treatment device 11 for removing dispersed particles other than the above, for example, powder such as curry powder. Further, in the present embodiment, tap water is used as the water W1 ejected from the water spray nozzle, but the present invention is not limited to this, and the dispersed particles are chemically treated according to the dispersed particles contained in the exhaust air. Water mixed with chemicals for purification treatment may be used.

[0051]

As described above in detail, according to the exhaust air treatment apparatus of the present invention, even if the amount of exhaust air to be treated increases, the dispersed particles contained in the exhaust air can be easily and effectively obtained. It is possible to provide an exhaust air treatment device that can be removed selectively.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an exhaust air treatment device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of an exhaust air treatment device according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a plate member.

FIG. 4 is a schematic diagram for explaining the operation of the exhaust air treatment device according to the embodiment of the present invention.

[Explanation of symbols]

11 ... Exhaust air treatment device, 13 ... Box body, 17 ... Duct,
19 ... Exit part, 21 ... Water spray nozzle, 23 ... Screen member, 25 ... Ozone gas ejection nozzle, 27, 29 ... Plate member, 37 ... Gutter member, 39 ... Notch part, 43 ... Ozone gas generating part, 45 ... Return part , 46 ... Notches, 47 ... Discharge pipe, 49 ... Oil separator, 51 ... Oil adsorbent,
53 ... Pump.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Nakagawa             4-1-1 Taishi-do, Setagaya-ku, Tokyo East             Express Car Co., Ltd. (72) Inventor Fumitoshi Kadowaki             3-1, Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Tokyu             Vehicle Co., Ltd. (72) Inventor Shinichi Okuda             3-1, Okawa, Kanazawa-ku, Yokohama-shi, Kanagawa Tokyu             Vehicle Co., Ltd. F-term (reference) 4D002 AB02 AC10 BA14 BA16 CA01                       DA51 EA02                 4D032 AC01 AC39 BA03 BB05 DA04

Claims (7)

[Claims] 1. An exhaust air treatment apparatus for removing dispersed particles contained in exhaust air, comprising: water supply means for supplying water; and the water supplied from the water supply means for a predetermined time. And a screen member that allows the water to pass therethrough, and a mist formation for storing the water that has passed through the screen member and for winding the stored water into a mist by the flow of exhaust air that has passed through the screen member. An exhaust air treatment device comprising: 2. The mist forming means includes a plate member that is arranged so as to be inclined so as to intersect with a vertical direction, and the water that has passed through the screen member is provided at an end portion on a lower side of the plate member. The exhaust air treatment device according to claim 1, further comprising a return portion for storing the return air. 3. The exhaust air treatment apparatus according to claim 2, wherein the return portion is provided with a plurality of cutout portions formed at predetermined intervals. 4. The plate member is arranged in plural with a predetermined interval in the vertical direction, and the inclination directions of the plate members intersect each other. Exhaust air treatment device as described. 5. A deodorizing unit disposed between the screen member and the plurality of plate members, for deodorizing the exhaust air passing through the screen member by mixing ozone gas into the exhaust air passing through the screen member. The exhaust air treatment apparatus according to claim 4, further comprising: 6. The water supply means includes a water spray nozzle for ejecting the water in the form of a mist toward the screen member, according to any one of claims 1 to 5. Exhaust air treatment device. 7. An exhaust air treatment device for removing dispersed particles contained in exhaust air, comprising a water spray nozzle for spraying water in a mist form, and the water sprayed in a mist form from the water spray nozzle. A plate member that can adhere and retain for a predetermined time and allow the water to pass therethrough, and a plate member that is arranged below the screen member and is inclined so as to intersect the vertical direction, the plate member An exhaust air treatment device, wherein a return portion for storing the water that has passed through the screen member is provided at an end portion on the lower side of the.