JPH09103475A - Deodorization device for exhaust duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decompose odor components and oil components in air discharged from an exhaust duct. SOLUTION: A box body 11 provided with a water tank 12 on a lower part is divided into a suction room 14 communicated to a suction port 2 and a deodorization room 15 communicated to a discharge port 5 by a partition plate 13 whose lower end is positioned under the water surface of the water tank 12 and a narrow part 19 is formed by the lower end 13a of the partition plate 13 and a return plate 16. The ozone contg. water in the water tank 12 surges up at the narrow part 19, air bubbles and waterdrops containing the ozone are generated and the odor components and the oil components in the sucked air are decomposed by an oxidation action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device for decomposing a large amount of odorous components of air discharged from exhaust ducts such as kitchens, animal houses and drainage pits.

[0002]

2. Description of the Related Art The air discharged from an exhaust duct of a kitchen such as a restaurant has been left alone because it contains almost no harmful components. However, since it contains a large amount of odorous components, it may cause environmental problems in areas with high artificial density. In order to solve such a problem, the present applicant forms a small chamber by a filter with a certain interval provided inside a frame body that can be arranged in a range hood, and at the same time, uses ozone water at the lower end of the frame body. A deodorizing device was proposed in which a storage tank is provided and oil or odorous components are submerged in ozone water and these components are decomposed by the ozone water (Japanese Utility Model Publication No. 3-123518).

[0003]

According to this device, the oil content can be taken into water, so that the life of the filter can be extended, and since it is attached to the range hood, its size is limited, and it is sufficient. In addition to not only being able to obtain a good deodorizing effect but also requiring troublesome construction due to the need for piping for ozone supply, the number that should be installed is especially large in facilities with a large number of range hoods, such as large stores. However, there is a problem that maintenance is troublesome due to the increase in the number of items. The present invention has been made in view of such a problem, and an object thereof is to provide a deodorizing device for an exhaust duct that can be installed by relatively simple construction and that can be centrally managed. .

[0004]

In order to solve such a problem, the present invention has an intake port connected to an exhaust duct, an exhaust port connected to an exhaust pump, and a water tank at the bottom. The enclosed box provided is divided into a first chamber communicating with the intake port and a second chamber communicating with the exhaust port side by a partition plate whose lower end is located below the water surface of the water tank,
A return plate that forms a constriction with the lower end of the partition plate is provided in the second chamber, and a bubbling means for discharging air containing ozone is provided in the water tank to divide the air in the first chamber into the partition. The water in the aquarium is dipped through the lower end of the plate to flow into the second chamber, and ozone-containing water or bubbles containing ozone act on the narrowed portion.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below based on embodiments. FIG. 1 shows an embodiment in which the deodorizing device of the present invention is applied to an exhaust facility of a kitchen. In the drawing, reference numeral 1 is a deodorizing device characterized by the present invention, and a suction port 2
Is connected to a discharge port of a duct 4 communicating with the plurality of range hoods 3, 3 and 3, an exhaust port 5 is connected to an exhaust pump 7 by a pipe 6, and a pipe 8 supplies ozone from an ozone generator 9. I am supposed to receive it. Reference numeral 10 in the drawing indicates an exhaust fin.

FIG. 2 shows the main body of the deodorizing apparatus described above. In the figure, reference numeral 11 is a box which forms a closed space, in which a water tank 12 is provided in the lower part, and the upper space has a lower end 13a from the surface of the water tank 12. It is divided into two chambers, a suction chamber 14 and a deodorizing chamber 15, by a partition plate 13 located below. As shown in FIG. 3, the partition plate 13 has a lower end 13a cut out in a mountain shape so that air can be sucked into the deodorizing chamber 15 side regardless of the water level or the air volume of the water tank 12.

A return plate 16 having a recess 16a on the partition plate 13 side is provided on the side of the deodorizing chamber 15 near the lower part of the partition plate 13, and a narrowed portion 19 is formed with the partition plate 13. On the suction chamber 14 side, a mountain-shaped guide plate 17 is arranged so as to go under the partition plate 13 from this space, and the air sucked into the deodorizing chamber 15 stably passes through the lower end 13a of the partition plate 13. Is configured to.

Further, a filter 18 is provided on the upper part of the return plate 16 so that the partition plate 13 side faces upward.

Reference numeral 20 is a bubbling means provided so as to be submerged in the water tank 12 in the vicinity of the return plate 16, which is formed by sintering a pipe having a large number of pores or a metal powder having a large particle size. It is composed of a pipe or the like formed as a porous material, and has one end sealed and the other end connected to the ozone generator 9 through the pipe 8. The ozone generator 9 is
Ozone generating means 21 such as an ultraviolet discharge lamp or a corona discharge device
And an air supply means 22 such as a compressor that press-fits air into this.

Reference numeral 23 denotes an ozone discharge port provided in the deodorization chamber 15, which is similar to the bubbling means 20 described above, and is formed by sintering a pipe having a large number of pores or a metal powder having a large particle size. It is composed of a pipe or the like formed as a porous material, and efficiently discharges the ozone-containing air from the ozone generator 9 into the deodorizing chamber 15.

In the figure, reference numeral 24 is a baffle arranged in a zigzag manner to meander the air flow, and reference numeral 25 is further added.
Is the water supply / drainage port of the aquarium 12, and 26 is the deodorization chamber 1.
5 shows filters provided in the upper space of 5, respectively.

In this embodiment, when the exhaust pump 7 is operated and the deodorizing chamber 15 is made to have a negative pressure, the atmosphere such as the kitchen is sucked from the hood 3 and the air is guided along the inclination of the guide plate 17 to form the partition plate. The water W in the aquarium 12 is dipped into the deodorization chamber 15 from the lower end 13a of the water tank 13.

Since the narrowed portion 19 is formed by the lower end 13a of the partition plate 13 which serves as a suction port and the return plate 16 in the process of drawing in, the flow velocity here increases, and as shown in FIG. Becomes a vortex and rises. Therefore, water droplets containing ozone and bubbles B are efficiently mixed with the air from the duct 4, the odorous components contained in the air are decomposed by the strong oxidizing action of the ozone water, and the oil is also decomposed. It dissolves in water W with high solubility and is turbid and is captured by water W.

This prevents oil from adhering to the vicinity of the lower filter 18 and the lower portion 13a of the partition plate 13 which come into contact with the air having the highest oil concentration.

The air that has risen in the deodorizing chamber 15 in this way is in contact with the ozone from the ozone discharge port 23 for a long time while being meandered by the baffle plate 24, and the odorous components and oil components are further decomposed to be deodorized. .

In the above embodiment, the deodorizing chamber 1
Although the filter 26 is provided in the space 5 and auxiliary means such as the ozone discharge port 23 are provided, these auxiliary means are used when the concentration of oil and odorous components is low and can be sufficiently decomposed with ozone water. Obviously it will not be needed.

Further, in the above-mentioned embodiment, the deodorization of the air discharged from the kitchen is taken as an example, but in the present invention, the air containing the odor is concentrated by connecting the duct as described above. Since it can be deodorized, it can be applied not only to kitchens, but also to facilities and facilities for exhausting air containing odors intensively through pipelines such as exhaust ducts in animal houses and waste storage pits.

[0018]

As described above, according to the present invention, the closed box having the intake port connected to the exhaust duct and the exhaust port connected to the exhaust fan, and having the water tank at the bottom, A partition plate whose lower end is located below the water surface of the water tank is divided into a first chamber that communicates with the intake port and a second chamber that communicates with the exhaust port side, and a constriction part is formed in the second chamber with the partition plate. And a bubbling means for discharging ozone-containing air are provided in the water tank to allow the air in the first chamber to pass through the lower end of the partition plate to dive the water in the water tank into the second tank.
Since it is designed to generate ozone-containing water and bubbles containing ozone that have boiled in the constricted part, ozone can be effectively applied to a large amount of air containing odorous components and oil, and odor and It can decompose oil and discharge it to the atmosphere.

Further, it can be installed by a simple construction such that it is attached to the exhaust port of the exhaust duct, and the pipe for supplying ozone to the ceiling can be eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of an exhaust system using a deodorizing device of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the deodorizing device of the present invention.

FIG. 3 is a diagram showing a structure of a lower end of a partition plate.

FIG. 4 is an explanatory diagram showing a water flow in the vicinity of a return plate and a partition plate.

[Explanation of symbols]

 1 Deodorizing device 2 Suction port 5 Exhaust port 7 Exhaust pump 9 Ozone generator 11 Box 12 Water tank 13 Partition plate 14 Suction chamber 15 Deodorization chamber 16 Return plate 17 Guide plate 19 Narrow portion 20 Bubbling means W Water

Claims (3)

[Claims] 1. A closed box having an intake port connected to an exhaust duct and an exhaust port connected to an exhaust pump and having a water tank at a lower portion thereof, the lower end of which is positioned below the water surface of the water tank. A return plate that is divided by a plate into a first chamber that communicates with the intake port and a second chamber that communicates with the exhaust port side, and forms a constriction in the second chamber with the lower end of the partition plate. To
Further, bubbling means for releasing air containing ozone is provided in the water tank, and the air in the first chamber is caused to dive into the second chamber by submersing the water in the water tank through the lower end of the partition plate. A deodorizing device for an exhaust duct that causes ozone-containing water or bubbles containing ozone to act on the narrowed portion. 2. The deodorizing device for an exhaust duct according to claim 1, further comprising a guide plate extending from the first chamber to a position below the partition plate. 3. The deodorizing device for an exhaust duct according to claim 1, wherein an ozone outlet is provided in the second room.