JP3121160B2 - Gas dust and disinfection equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing tower and an ozone supply.
And an upper part inside the washing tower.
A spray nozzle for liquid that sprays washing water containing zons,
The lower part guides the contaminated air containing dust, bacteria, etc.
Air introduction pipes are provided, and the air introduction pipes
While introducing contaminated air into the washing tower from
Spray cleaning water containing ozone from the liquid spray nozzle
Dust and bacteria in the contaminated air to be treated are separated into spray water
.Collected or sterilized, cleaned and washed
Equipment for removing dust and disinfecting gas discharged from the upper part of the tower , especially food processing rooms, food storage rooms, hospitals, hospital operating rooms, bio-related aseptic workshops, semiconductor-related workshops The present invention relates to a gas dust / sterilizer suitable for application to such applications.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 2, a dust removing and disinfecting apparatus for removing dust, bacteria, and the like in a gas is shown in FIG.
A washing tower 50 is provided. The washing tower 50 is connected to a chamber where dust and bacteria are to be removed, for example, a food processing chamber 51, by an exhaust pipe 52 for circulation and a return pipe 53. And the exhaust pipe 5
2 is provided with a blower 54 and a filter 55, and a return pipe 5
An air conditioner 56 is interposed in 3. The washing tower 50
A circulation pipe is provided in order to repeatedly use the washing water accumulated at the bottom of the filter, and a filter 58, a pump 59, etc., containing a built-in adsorbent such as activated carbon or ion exchange resin are interposed in the circulation pipe. Therefore, when the blower 54 is activated, the air containing dust, bacteria, etc., exhausted from the food processing chamber 51,
The coarse dust is removed by the filter 55, introduced into the lower part of the washing tower 50, and then risen. During the ascending process, it comes into contact with water droplets sprayed from the spray nozzle 57, and dust and bacteria contained in the air move toward the water droplets by the washing and dust collecting action and are separated and collected from the air flow. The collected dust and the like settles at the bottom of the washing tower 50. Wash water collected at the bottom of the washing tower 50 is filtered by a filter 58 and a pump 59.
, And is supplied to the spray nozzle 57 for removal of dust, bacteria and the like as described above. On the other hand, the air that has been cleaned and dust-free by the washing tower 50 is supplied to the air conditioner 5.
The temperature, humidity, etc. are adjusted in 6 and returned to the food processing chamber 51 from the return pipe 53 again.

As described above, air can be purified by a conventional dust removing / sterilizing apparatus, but there is a drawback.
For example, the conventional dust removing / sterilizing apparatus shown in FIG. 2 takes measures against bacteria separated and collected in the washing tower 50 or bacteria not collected in the air. Since there is no bacteria, the bacteria remaining without being collected may return to the food processing room 51 by riding on the air flow. Further, the bacteria separated and collected in the washing tower 50 are propagated while staying, and the washing water containing the bacteria is sprayed from the spray nozzle 57. Then, the degree of contamination increases due to the spray water droplets. Although the problem can be solved to some extent if the washing water in the washing tower 50 is frequently discharged and replaced with new washing water, the washing water used in the large-capacity washing tower 50 requires a large amount of washing water. Disposal increases operating costs and is not practical. Disposal as it is also pollutes the environment.

[0004] Therefore, a dust removing and disinfecting apparatus in which ozone gas is bubbled into a water pool below the washing tower 50 has been proposed, for example, in Japanese Patent Application Laid-Open No. 62-69033. According to this apparatus, bacteria in water collected from the air can be sterilized by ozone.

[0005]

However, there are problems or points to be improved. For example, a certain level of ozone concentration is required to increase the bactericidal effect,
Even if ozone is bubbled in shallow water, ozone will escape from the water and the ozone concentration will not increase.
Therefore, sufficient sterilization cannot be performed with the above-described dust removing and sterilizing apparatus. In order to increase the ozone concentration in the above-mentioned washing tower 50, it is necessary to increase the water pressure, so that the water level of the stored water must be several meters, and the washing tower becomes large. If a large amount of ozone is used to increase the ozone concentration, a large amount of ozone is discharged without being dissolved, so that the filter for removing ozone has a large capacity. Accordingly, it is an object of the present invention to provide a gas dust removing / sterilizing apparatus which can sufficiently remove dust / germ even though the apparatus is small.

[0006]

The present invention, in order to achieve the above object, comprises a washing tower and an ozone supply device.
The upper part of the inside of the washing tower is washed with ozone.
A liquid spray nozzle for spraying water has dust in the lower part.
Air introduction for introducing contaminated air containing dust, bacteria, etc.
Tubes are provided respectively, and the contamination to be treated is
While introducing air into the washing tower, the liquid spray
-When ozone-containing cleaning water is sprayed from the nozzle,
Dust and bacteria in contaminated air are separated and collected in spray water
Or sterilized and cleaned, and the upper part of the washing tower
Dust and disinfection equipment for gas discharged from the
Wherein the washing tower contains ozone-containing washing water.
A spray-type ozone dissolution tank for obtaining purified water is provided,
The spray type ozone dissolving tank is a spray nozzle for the liquid
And the upper and lower parts are open.
And the ozone supply device is a diffuser for ejecting ozone.
And a liquid nozzle for spraying cleaning water in which ozone is dissolved
And the liquid nozzle is spray-type ozone-soluble
In the upper part of the tank, and in the lower part,
Each is configured to be arranged . According to a second aspect of the invention, the external water scrubber according to claim 1, provided with water drop removal means for removing the fine water droplets in the air which is cleaned is dust-sterilized in water wash tower The water outlet of the water droplet removing means is connected to the washing tower by a return pipe provided with a water sealing portion.
Or tip of the air introduction pipe according to 2 are configured as open facing the Oite upward at a substantially central portion in the radial direction of the water washing tower.

[0007]

The washing water is sprayed from a liquid nozzle into a spray-type ozone dissolving tank to dissolve ozone. In addition, ozone is supplied into the spray type ozone dissolving tank from a diffuser connected to the ozone supply pipe. Then, the spray water and the ozone efficiently come into contact in the spray type ozone dissolving tank, and a high-concentration ozone water, that is, washing water is obtained. This high concentration
The washing water is sprayed from a liquid spray nozzle provided in an upper part in the washing tower. At the same time, in the water washing tower
Dust in the lower part, introducing the treated contaminated air containing bacteria and the like. Then, the treated contaminated air is heavily in contact with spray showers of washing water of the dust to be treated contaminated air, bacteria and the like are separated and collected or sterilized spray shower cleaning. Then, it is discharged from the upper part of the washing tower .
The invention described in claim 2 operates as in the above invention, and the purified air reaches the water droplet removing means. Fine water droplets contained in the air cleaned by the water droplet removing means are collected. Then, the collected washing water is returned to the washing tower by a return pipe provided with a water sealing portion. Claim 3
The invention described is in effect of the invention of claim 1 or 2 wherein, dust, the treated contaminated air containing bacteria and the like are supplied toward the Oite upward at a substantially central portion in the radial direction of the washing tower .

[0008]

FIG. 1 shows an embodiment of the present invention. As is apparent from FIG. 1, the dust removing / sterilizing apparatus S according to the present embodiment includes a washing tower 1 and a circulating intake system 20 for supplying contaminated air in the clean room R into the washing tower 1. , A circulation return system 30 for returning the air purified by the washing tower 1 to the clean room R, and an ozone supply system 40.

The washing tower 1 is formed as a cylindrical closed vessel. An eliminator 2 for removing water droplets, that is, an eliminator 2 for removing water droplets, is provided in an upper portion thereof, and a storage portion 4 is provided in the lowermost portion. A liquid spray nozzle 3 is provided below the eliminator 2. The liquid spray nozzle 3 is directed downward at a substantially central portion in the radial direction of the washing tower 1. Therefore, the washing water sprayed from the spray nozzle 3 spreads in a mist in a conical shape in four directions, and a part of the water reaches the side wall of the washing tower 1. The spray water that has reached the side wall becomes water droplets and flows down along the side wall of the washing tower 1. A float valve 5 is provided at a predetermined position below the washing tower 1, and a control valve 6 is controlled by the float valve 5,
The water depth H of the storage section 4 is maintained at a predetermined depth. A drain drain pipe 8 is provided at a lower portion of the washing tower 1, and an on-off valve 9 and a filter 10 are interposed in the drain drain pipe 8.

The circulating intake system 20 includes a contaminated air suction pipe 21.
And a blower 22 interposed in the suction pipe 21 and a pre-filter 23 for air. One end of the suction pipe 21 is open to a lower part of the clean room R. Therefore, the polluted air that tends to settle, including dust, bacteria, etc., is efficiently discharged. The other end of the suction pipe 21 extends to substantially the center of the washing tower 1. In some cases, an air jet nozzle 25 pointing upward may be provided at the tip.

The circulation return system 30 includes a discharge pipe 31 opened on the upper wall of the washing tower 1, a drip removal cyclone 32 as water drop removing means, and one end opened above the clean room R. Return pipe 33, an ozone removing means 34 which is interposed in the return pipe 33 and is filled with an adsorbent such as activated carbon, and a return pipe for returning the water separated by the drip cyclone 32 to the washing tower 1. And a return pipe 35. The other end of the discharge pipe 31 is opened to the body of the drip cyclone 32, the other return pipe 33 is connected to the overflow pipe of the drip cyclone 32, and the return pipe 35 is connected to the underflow pipe. The lower end of the return pipe 35 is connected to the lower part of the washing tower 1, and a water sealing part, that is, a U-shaped trap 36 is interposed in the middle thereof.

The ozone supply system 40 includes an ozonizer 41,
It is roughly composed of a diffuser bulb 42 opened in the spray type ozone dissolving tank 11 provided in the washing tower 1. Ozone generated by the ozonizer 41 is supplied to the baloon 42 by an ozone supply pipe 43. In this embodiment, the spray type ozone dissolving tank 11 is formed so as to partially partition the inside of the washing tower 1. That is, the washing tower 1
The side wall 12 is surrounded by a vertical wall 14, a part of the lower part of the vertical wall 14 is immersed in the washing water W of the storage part 4, and the spray type ozone dissolving tank 11 whose upper part is opened is formed. As described above, the spray-type ozone dissolving tank 11 is provided with the diffuser ball 42, and the liquid nozzle 44 is provided above the diffuser ball 42 so as to face downward. At the lower part of the washing tower 1, that is, at the lower part of the spray-type ozone dissolving tank 11, an end of a liquid circulation pipe 15 is opened.
The other end is connected to a liquid spray nozzle 3 provided above the washing tower 1. A circulation pump 16, a liquid filter 17, and a flow control valve 18 are interposed in the liquid circulation pipe 15. From the liquid circulation pipe 15 to the branch pipe 1
9 branches, and a liquid nozzle 44 is connected to the branch pipe 19. The branch pipe 19 is provided with a flow control valve 18 '.

Next, the operation of the above embodiment will be described.
The opening and closing of the control valve 6 is controlled by the function of the float valve 5, and washing water W having a predetermined depth H is supplied to the washing tower 1 from a water pipe 7. The blower 22 is started. Then, the contaminated air is supplied from the lower part of the clean room R to the substantially central part of the washing tower 1 by the contaminated air suction pipe 21. The supplied air is dispersed from the air nozzle 25 and spreads and rises in the washing tower 1. Before being guided to the air nozzle 25, relatively large dust is removed by the pre-filter 23. The circulation pump 16 and the ozonizer 41 are also activated. Then,
The cleaning water W in the storage unit 4 is sucked by the circulation pump 16 and filtered by the liquid filter 17, and the cleaning water at a flow rate controlled by the flow control valve 18 is sprayed downward from the liquid spray nozzle 3. .

On the other hand, the washing water diverted from the liquid circulation pipe 15 reaches the liquid nozzle 44 from the branch pipe 19 and is sprayed in the spray type ozone dissolving tank 11. Ozonizer 41 at the same time
Is supplied from the air nozzle 42. The cleaning water sprayed from the liquid nozzle 44 and the ozone sprayed from the air nozzle 42 come into contact with each other, become high-concentration ozone water, and accumulate in the storage unit 4. The high-concentration ozone water stored in the storage section 4 is sprayed from the liquid spray nozzle 3 as described above.

The high-concentration ozone water spray shower and the contaminated air jetted from the air nozzle 25 come into contact countercurrently. Due to this contact, dust and bacteria in the contaminated air are separated and collected by the high concentration ozone water spray shower,
Sterilized. Further, it is directly sterilized by ozone separated from the washing water W of the storage unit 4 or ozone separated from the spray shower. Fine water droplet particles that have captured dust, bacteria, and the like accumulate in the storage unit 4 of the washing tower 1. The storage section 4 is also sterilized by ozone. On the other hand, the air that has passed through the high-concentration ozone water spray shower area in the washing tower 1 and has been washed is turned into fine water droplet particles by the eliminator 2 provided in the washing tower 1 and the subsequent cyclone 32. Removed. Then, the ozone is removed by the ozone removing means 34, and is adjusted by an air conditioner (not shown), and returns from the return pipe 33 to the upper part of the clean room R again. At this time, the washing water separated by the drip cyclone 32 is temporarily stored as an underflow in the U-shaped trap 36 of the return pipe 35 and returned to the storage section 4 of the washing tower 1. Reservoir 4
When the degree of contamination of the washing water W has increased, the on-off valve 9 is opened and the storage section 4
Is filtered by the filter 10 and drained to the outside.

According to this embodiment, various effects can be obtained.
For example washing tower 1 sprays ozone dissolving tank 11 provided in, because the top is open to the water scrubber 1, the ozone that has not dissolved in washing water, spray the ozone dissolving tank 1
Rises in the washing tower 1 from 1 at the top, directly contaminated gas mixture in contact, on a previously sterilized, it means that further contact with the high concentration of the spray of ozonated water, further sterilizing effect is improved. In addition, ozone not dissolved in the washing water
Through the washing water sprayed from the liquid spray nozzle 3
Because it is evacuated, i.e. trapped and dissolved in the wash water
Therefore , the amount guided to the ozone removing means 34 is reduced. Therefore, a small capacity of the ozone removing means 34 is sufficient. In addition, ozone is also separated from the washing water W in the storage section 4 of the washing tower 1 and also from the high-concentration ozone water spray shower, but these separated ozone is effectively used for sterilization in contaminated air. Is done. As described above, high-concentration ozone water is obtained in the spray-type ozone dissolving tank 11, but the liquid circulation pipe 15 is connected to the spray-type ozone dissolving tank 11.
, High-concentration ozone water can be directly sucked and sprayed from the liquid nozzle 44. Further, according to the present embodiment, the high-concentration ozone water spray shower is jetted downward, and the contaminated air is jetted upward from the air nozzle 25. The effect is great.

[0017]

As is evident from the foregoing description, according to the present invention, by spraying the wash water containing ozone from the spray nozzle the liquid, the
Washing the dust from the process contaminated air, and separating and collecting the bacteria and the like to the spray water is adapted to clean the treated contaminated air
A spray is installed inside the tower to obtain washing water containing ozone.
-Type ozone dissolving tank is provided
The thawing tank is located at the lower part of the liquid spray nozzle.
The upper and lower parts are opened and the ozone is dissolved.
The liquid nozzle for spraying water is spray-type ozone dissolving
In the upper part of the tank, the air diffuser that blows out ozone is in the lower part.
Minutes, the washing sprayed from the liquid nozzle
Purified water and ozone spouted from the air diffuser are spray type
Efficient contact in the ozone dissolution tank and high concentration ozone water
Become. This enhances the sterilization or disinfection effect
You. Ozone not dissolved in the washing water is sprayed.
The upper part of the ozone dissolving tank is open.
Ascend inside the washing tower from the mouth. At this time, the contaminated gas to be treated
And direct mixing contact. This also allows for sterilization or sterilization
Is done. And the washing sprayed from the spray nozzle for liquid
The substance comes in contact with purified water and is trapped or dissolved in the wash water. to this
Therefore, the ozone concentration is further increased. As above
According to the present invention, the spray type ozone dissolving tank is
This spray-type ozone dissolving tank is
Located in the lower part of the Reynolds nozzle and its upper and lower parts
Is open and is used for spraying cleaning water that dissolves ozone
The nozzle is located in the upper part of this spray type ozone dissolution tank.
In addition, the diffusing means for ejecting ozone is arranged in the lower part.
Because there, to the ozone water of a high concentration by a compact device
In other words, the washing water can be sprayed from the liquid spray nozzle.
It can be, Oh separating and collecting dust, bacteria and the like to be treated pollution in the air
Japanese in the present invention that Rui can effectively cleaned and sterilized
An advantageous effect is obtained . According to the invention described in claim 2,
Outside of the washing tower mounting serial to claim 1, water drop removal means for being dust-sterilized in water washing tower remove fine water droplets cleaned air is provided, the drain outlet of the water droplet removal means Is connected to the washing tower by a return pipe provided with a water sealing portion, so that in addition to the effects of the invention according to claim 1 , washing water containing ozone is discharged to the outside during operation. Without
A safe dust removal / sterilization device can be obtained. According to a third aspect of the invention, the tip portion of the air inlet tube of claim 1 or 2, wherein, since it opens towards the Oite upward at a substantially central portion in the radial direction of the washing tower, the treated contaminated air The liquid sprinkler uniformly spreads upward in the washing tower and is provided in the upper part of the air inlet pipe.
The washing water sprayed from the laser nozzle is opposed to the washing water, and an effect of efficiently removing dust and removing bacteria is added .

[Brief description of the drawings]

FIG. 1 is a front view schematically showing an embodiment of the present invention.

FIG. 2 is a front view schematically showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rinse tower 3 Liquid spray nozzle 11 Spray type ozone dissolution tank 24 Air introduction pipe 32 Drip removal cyclone 35 Return pipe 36 U-shaped trap 41 Ozonizer 44 Liquid nozzle

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Akio Ohno 1-3 Takanodai, Yokkaido, Chiba Japan Steel Works Co., Ltd. (56) References JP-A-62-69033 (JP, A) JP-A-3-221196 ( JP, A) JP-A-1-293118 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 7/00 F24F 7/06 B01D 47/06

Claims (3)

(57) [Claims] A washing tower (1) and an ozone supply device (4)
0) in the upper part of the inside of the washing tower (1).
Is a spray nozzle for liquid that sprays cleaning water containing ozone
(3), the lower part contains dust, bacteria, etc.
Air introduction pipes (24, 25) for introducing contaminated air
To be processed from the air introduction pipes (24, 25).
Contaminated air is introduced into the washing tower (1),
Wash water containing ozone from the liquid spray nozzle (3)
When sprayed, dust and bacteria in the contaminated air to be treated
Separated and collected or sterilized and cleaned.
It is discharged from the upper part of the washing tower (1)
In the washing tower (1)
Inside is a spray for obtaining cleaning water containing ozone
A spray ozone dissolving tank (11) is provided.
The zon dissolving tank (11) is provided for the liquid spray nozzle (3).
The ozone supply device (40) is located at a lower portion, and the upper and lower portions thereof are open.
Spraying means (42) and washing water in which ozone is dissolved
A liquid nozzle (44), wherein the liquid nozzle (44)
In the upper part of the tank (11) and in the
2) is a gas dust / sterilizer which is respectively arranged in a lower part . 2. A water droplet removing means for removing fine water droplets in air which has been cleaned by being dust-removed and sterilized by the water washing tower (1) outside the water washing tower (1) according to claim 1. (32) is provided, and a drain port of the water droplet removing means (32) is connected to the washing tower (1) by a return pipe (35) provided with a water sealing portion (36). Dust and sanitizer. Wherein the distal end portion of the air inlet tube of claim 1 or 2 (24, 25) is a gas that is open toward the Oite upward at a substantially central portion in the radial direction of the washing tower (1) Dust and sanitizer.