JPH0435206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air purifying device for deodorizing, sterilizing, and collecting dust from contaminated air in hospitals, factories, etc. using ozonated water.

Conventional devices of this type rain ozone water on dirty air to deodorize and sterilize the air, but due to the nature of raindrops, there is a limit to their size, and the interaction between air and raindrops is limited. It is difficult to increase the contact area and improve its throughput.

The object of the present invention is to provide an air cleaning device that has a higher processing capacity than the above-mentioned case where deodorization is performed by making raindrops fall.

Another purpose is to obtain a device that can further expand the contact area between the dirty air to be treated and ozonated water.
Another purpose is to effectively use surplus ozone when obtaining ozonated water by bringing it into contact with the air to be treated.

To explain this invention based on the attached drawings, a spray nozzle 3 is provided above the packing 2 located in the middle of the packed column 1, and a mist removal device 4, activated carbon 5, and suction fan 6 are provided in sequence above the spray nozzle 3. Further, an ozone water hopper 7 is provided below the filling material 2, and a to-be-treated air introduction duct 8 and an ozone gas supply pipe 9 are connected above and below the hopper 7, respectively, and a pump 10 is connected between the spray nozzle 3 and the hopper 7. This is an air cleaning device that communicates with a pipe 11.

The filler 2 is a filler commonly used for scratching, such as a stainless steel wire formed into a mesh or cotton shape, a plastic pebble, or a ceramic pebble. Further, an ozonizer 12 is connected to one end of the ozone gas supply pipe 9, and the ozone gas generated here is sent from the ejection nozzle 13 at the other end of the ozone gas supply pipe 9 to the ozonized water 14 in the hopper 7.
The ozone gas is ejected in the form of bubbles, and at this time, the ozone in the ozone gas is absorbed into the ozonated water 14.

The ozonated water 14 obtained in this way is sent to the pump 1.
0 and pipe 11 to the spray nozzle 3,
It is sprayed from here towards the top surface of the packed layer 2,
It flows down while bending along the surface of the filling material 2, ie, stainless steel wire or plastic pebble, etc., returns to the hopper 7, and repeats the above-described ozone absorption and spraying again.

During this time, the air to be treated supplied from the introduction duct 8 enters the ozone gas chamber 15 between the lower surface 2a of the filling 2 and the free surface 14a of the ozonated water 14, where the ozone gas that has passed through the ozonated water 14 is removed. The deodorizing treatment is carried out by mixing with the filling material 2, and then the material is moved up through the gap in the filling material 2.

At this time, it comes into contact with a large area of ozonated water that descends along the surface of the filling material placed above, and undergoes deodorization and sterilization treatment, and then the mist removal device 4 and the activated carbon 5
When passing through the air, dehumidification and ozone removal are performed, and the thus purified air is sucked in by the suction fan 6 and discharged into the atmosphere from the exhaust port 16.

Further, when the dust contained in the air to be treated comes into contact with the ozonated water, it enters the ozonated water and settles at the bottom of the hopper 7, forming a dust layer 18 on the valve 17.

When this amount exceeds a certain amount, the handle 19 is rotated to open the valve 17 and the waste is disposed of outside.

At this time, fresh water corresponding to the amount of waste is supplied into the hopper through a supply pipe (not shown), and automatic control is performed to keep the free surface level 14a constant.

Since the present invention is as described above, it is possible to further expand the contact area between the dirty air to be treated and ozonated water, thereby improving the processing performance such as deodorization.

In addition, a spray nozzle 3 is provided above the packed tower 1, and an ozonized water hopper 7 is provided below, and the hopper 7 and the spray nozzle are communicated with each other by a pump and a pipe, so that when the air to be treated rises through the gap between the packing materials 2, The ozone water that falls while wetting the surface of the filling material 2 flows in opposite directions and comes into contact with the filling material 2, thereby increasing the chances of such contact. In addition, the ozone gas that is not absorbed by the ozonated water in the hopper 7 by the gas supplied from the ozone gas supply pipe 9 becomes bubbles and rises from the free surface of the ozonated water and mixes with the gas to be treated, filling the gaps in the filling 2. Since the ozone rises through the ozone water, the air to be treated can be deodorized and sterilized at this time as well, and the ozone that has not been absorbed into the ozone water in the hopper 7 can also be fully utilized.

Although the present invention has been described above based on FIG. 1, the present invention is not limited to the embodiment shown in FIG. 1, and may be modified, for example, to the embodiments shown in FIGS. 2 to 4.

In the embodiment shown in FIG. 2, an ozonizer/dust charging device 20 is installed in the introduction duct 8 of the embodiment shown in FIG. At that time, it comes into contact with the descending ozonated water to deodorize and sterilize it, and the descending ozonated water absorbs ozone gas and is stored in the hopper as ozonated water with a high ozone concentration, and is pumped again by the pump 10. It is sent to the spray nozzle.

At the same time, the dust in the dirty air sent from the introduction duct 8 is charged, collected once by the filler 2, and washed off with ozonated water, and then transferred to the hopper 7.
The dust is collected and precipitated into the dust layer 18.

This dust charging/ozonizer 20 is provided with a linear discharge electrode 21 on one side of a substrate 26 made of fine ceramic glass such as high-purity alumina magnetic material or a suitable dielectric material, and a linear discharge electrode 21 is provided on one side of the substrate 26. A planar induction electrode 22 is provided on the side surface, and both electrodes 21, 2
A high frequency power source 23 is connected between the two electrodes, and a counter electrode is provided at a position facing the linear discharge electrode 21 of the electric field device. 24, and a DC high voltage power supply 25 is connected between them,
The ionic current flowing from the discharge electrode 21 toward the counter electrode 24 charges the dust flowing there, making it easier to collect it with the filler 2.

In the embodiment shown in FIG. 4, the hopper 7 and the pump 10 in the embodiment shown in FIG. 1 are connected by a pipe 26, and an ozonizer 12a is connected to the pipe 26.
The ozone gas generated here is mixed into the ozone water in the pipe 26 flowing from the hopper 7 to the pump 10, thereby increasing the ozone concentration, and sending it to the spray nozzle 3 shown in Fig. 1. It is something.

However, 12a may be an ozonated water generator that combines an ozonizer and a bubbling device.

In the system shown in FIG. 5, ozone generated by an ozonizer 12 is introduced into an inlet duct 8 through a connecting pipe 9, and introduced into the lower space 15 of an upper packed column for addition and mixing with dirty air in the inlet duct. In this case, most of the ozone is absorbed by the flowing water and becomes ozone water, which effectively absorbs and removes the contaminants in the gas and causes it to come into contact with the flowing water on the surface. It falls into the hopper 7.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of a part of another embodiment, FIG. 3 is an enlarged sectional view of the - line part in FIG. The figure is a longitudinal sectional view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Packed tower, 2... Filler, 3... Spray nozzle, 7... Hopper, 8... Treated air introduction duct, 9... Ozone gas supply pipe, 10... Pump, 11... Pipe, 20 ... Ozonizer/charging device, 21... Linear discharge electrode, 22... Planar dielectric electrode, 24... Counter electrode, 26... Substrate.

Claims (1)

[Claims] 1. An ozone water spray nozzle is provided above the packing formed in the middle of the packed column, and a hopper is provided below through an ozone gas chamber, and the hopper and the spray nozzle are connected to each other. An air purifying device that communicates with the ozone gas chamber via a pump, an ozone gas supply device that communicates with the ozone gas chamber, and one end of a duct for introducing air to be treated into the ozone gas chamber. 2. The air cleaning device according to claim 1, wherein the ozone gas supply device is an ejection nozzle provided in a hopper and communicated with an ozonizer. 3. The air purifying device according to claim 1, wherein the ozone gas supply device is a dust charging/ozonizer provided in the air to be treated duct. 4. The air purifying device according to claim 1, wherein the ozone gas supply device is provided in the treated air introduction duct and is an end portion of a supply pipe that communicates with an ozonizer.