JPS6025524A - Air purifier with filter - Google Patents

Abstract

PURPOSE:To sterilize bacteria adhered to a filter and to remove the offensive odor of dust adhered to the filter, by providing an ozone adding apparatus to the upstream side of the filter. CONSTITUTION:Dirty inflow air from the inlet 2 of an air duct 1 passes a screen 5 to separate coase dust therein and the treated air is passed through a nonwoven fabric filter 4 to remove dust, virus, bacteria or fungi by collecting and adhering the same by said filter 4. An ozone adding apparatus such as an Ozonizer 7 is provided between the screen 5 and the filter 4 and a high frequency wave is applied between the plane electrode (a) embedded in a dielectric body 8 and the wire corona discharge electrode 10 on the surface thereof and ozone is generated by corona discharge to be added to the air stream. The ozone added air passes the filter 4 to sterilize bacteria adhered to said filter 4. Because an activated carbon filter 12 is provided to the downstream side of the filter 4, ozone passing the filter 4 is converted to carbon dioxide in said filter 12 while the treated air is exhausted from an outlet 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in filters and air purifiers used in general rooms, factories, hospitals, etc.

The conventional air purifier for this building supplies air containing dust from the upstream side of a filter made of fibrous material in the form of a non-woven fabric.1. 7c that collects the dust with a filter and becomes clean
Since all the air is allowed to pass through downstream 1, to that extent 2
Although the function as an air purification legend has been established6,
At this time, various bacteria, viruses, mold spores, etc. mixed in the air on the upstream side are also collected by the filter and become resistant.
Together with the above-mentioned dust, these become a source of bacteria, viruses, mold, and pests that are harmful to the human body. For this reason, it is known that 7C enters the body of the person who breathes the air downstream of the filter, and can be the cause of various diseases.

The object of the present invention is to eliminate the harmful effects on the human body caused by various types of bacteria, viruses, mold, etc. that are collected by such filters. Another purpose is to eliminate bacteria and other substances that have adhered to the filter, and another purpose is to provide a layer to the filter and completely remove the foul odor of dust.

This invention consists of a fibrous material in the form of a non-woven fabric, and an ozonizer or an ozone gas outlet is provided on the upstream side of the filter, that is, in order to add ozone gas to the dirty air containing dust, etc. This is a air purifier with a filter, which is equipped with an ozone outlet ft' such as an outlet, and sterilizes bacteria that have become resistant to the filter.

To explain this invention with reference to an embodiment shown in the accompanying drawings, a filter 4 made of various fibrous materials in the form of a non-woven fabric is placed between an inlet 2 and an outlet 3 of an air duct 1, and a filter 4 is installed between an inlet 2 and an outlet 3 of an air duct 1 to remove dirty air flowing from the inlet 2. is supplied to the upstream side of this filter 4, passes through it, and flows downstream.

At this time, dirt, dust, various viruses, bacteria, mold, etc. in the nitrogen gas are collected by the filter and protected against the filter.

A screen 5 is also provided at the inlet 2 to completely separate coarse dust 4 from the air.

An ozonizer 7 is provided between this screen 5 and the aforementioned filter 4. The ozonizer 7 may have any structure, but in this example, it includes a planar electrode 9 embedded in a dielectric material 8 such as fine ceramic and a linear corona abrasive electrode 10 formed on the surface of the dielectric material 80. A sinusoidal or pulsed high frequency high voltage is injected between both 'm&9+10 from a high frequency power source 11 to connect an electrode 10Lυ.
L quazone is generated in the high frequency old surface corona discharge generated on the surface of the dielectric body 8. This easy@electrode 9rl:
It is not necessary to embed it in the dielectric body 8, but it can also be placed on the surface of the dielectric body 8, and two sheets formed in this way can be placed so that their back surfaces are in contact with each other. , or may be arranged separately.

The ozone generated here is added to the air in the duct, mixes with it, flows, and passes through the filter 4, but this light removal is harmful to bacteria and other substances that are resistant to the filter 4 for a long time.
It disinfects by touching it continuously.

activated carbon filters 12 and 7 amps downstream of filter 4],
4 i is provided, and an ozone spout is provided in the air that passes through the activated carbon filter 4, and the ozone is turned into carbon dioxide gas and discharged from the outlet 3, so that the ozone does not affect the human body.

Is the activated carbon filter 12 made of activated alumina or the like? It consists of activated carbon particles mixed and molded, or fibrous activated carbon formed into a corrugated shape with low pressure loss.

The filter 4 mentioned above is folded in a zigzag shape as shown in FIG.
, as shown in Figure 2.
The zigzag-shaped separators 6a and 6b that maintain the entire shape are inserted into the groove 4a from the upper 61L side as shown by arrow A2.
The air that has entered the filter 4 in the direction shown in FIG. 2 passes through in the direction of arrow A4.

The embodiment shown in FIG. 3 is compatible with the present invention in a two-stage electrostatic precipitator that includes a charging section 15 and a dust collecting section 16. Among the drawing symbols in the same figure, those that are the same as those in FIG. 1 have the same names. A counter electrode 18 connected to a DC power source 17 is provided between each ozonizer 7 in the charging unit 15U, and a corona discharge electrode 10 is connected to the ground wire of the ozonizer 7.
A direct current of ions is generated between the electrode 18 and the counter electrode 18 from the former toward the latter. This is charged by F in the air, but the charge at this time is IM = ff1l 15 fl
In the end part 16, which is commonly used as an ozonizer, a positive electrode 20 and a negative electrode 21 are provided adjacent to each other with 19 spaces between them.
ft connection, the negative electrode 21 is grounded, and both electrodes 20 and 21
The electric field generated at 1143 traps the above-mentioned charged dust.

At this time, the collected dust and #Im, which is coated with a resistant layer on it,
It goes without saying that viruses, mold, and the like are sterilized by being exposed to the ozone-added air flow generated by the ozonizer 7 for a long time.

The embodiment of FIG. 4 is shown in FIG. 2 and has zigzag separators 6a, 6b in the π portion. A dust collecting part 16a is formed of white and has a DC power supply 17a connected therebetween.By replacing this with the dust collecting part 16 according to the embodiment shown in FIG. 6a, 6b It can be collected very effectively by the effect of the dark electric field. In this case, for example, most of the negatively charged particles are collected on the surface of the upstream separator 6a, which has positive polarity, by electric force, so that the dust entering the filter 4 is Kuwei! This is also effectively collected by the electric field within the filter, and overall the softening rate is extremely high. 1 is installed outside the duct 1 instead of the high-frequency ozone generator consisting of a planar electrode 9 buried in the case 8 and a linear polarization 10 in the embodiment shown in FIG. Are you? C It is equipped with an appropriate ozonizer 7a and an ozone spouting part 21 which is continuously released by a pipe 20. pl This spouting part 2
Ozone duct 1 where ozonizer 7a″″c is generated from 1
It is added to the air introduced from the inlet 2.1.

Note that the drawing symbols in this figure are the same as those in FIG. 1, and their names are also the same.

Since this invention is as described above, there is no risk that the filter will collect dust and other bacteria, and that the electricity passed through the filter will have an effect on the human body, especially the respiratory system. do not have.

Also, since the killing power of ozone is extremely large, the amount of ozone that must be added to the inlet is only about 1 to 2 ppm, which is extremely economical.

[Brief explanation of drawings]

Fig. 1a is a cross-sectional view of an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the portion shown in Fig. 1, Fig. 3 is a vertical sectional view of another embodiment, Fig. 4 ri A sectional view of another embodiment of the Hb portion in Fig. 2, Fig. 5 r! FIG. 3 is a longitudinal sectional view of the embodiment shown in FIGS. 1 and 3; 4...Filter 4a...Upstream concave line 4b...Downstream concave line 6a... Separator 6b...Separator 7...Ozonizer 7w...Ozonizer 8...Fine ceramic? Ijj electric body 9... Planar electrode 10... Linear electrode 12... Activated carbon filter 15...
...Charging section 16...Collection section 17...DC power supply 19...Interwall section 20... ...Positive electrode 21 ...Negative storm pole 23 ...Ozone extraction department representative Patent attorney Ichi Saito (and 2 others)

Claims (1)

[Claims] 1. An air purifier with a filter, which includes an ozone addition device and an upper membrane on the upstream side of the filter. 2. F) Air purifying device with lettering, characterized in that the filter according to claim 1 is a filter made of fibrous material in the form of a non-woven fabric. An air purifier with a filter, characterized in that the filter in the range 1 of the a vf pipe is bent in a zigzag shape. 4. An air cleaner with a filter, characterized in that the zigzag-shaped filter according to claim 3 has zigzag-shaped separators fitted into its upstream and downstream grooves, respectively. 5. Nitrogen purifier with a filter, characterized in that the zigzag separator according to claim 4 is formed of metal foil, and a DC power source is connected between the zigzag separators on both sides. Machine. 6. Percentage The ozone addition device described in claim 1 has a planar shape with a glandular electrode that faces each other via a fine mink dielectric! A filter-equipped air purifier characterized by being an ozonizer consisting of a pole. 7. Scope of claims 1. An air cleaner with a filter, characterized in that the filter described in 2 is a dust collection unit consisting of a positive electrode and a negative electrode adjacent to each other with a space between them. (a) An air purifying device with a filter, characterized in that the ozone addition device according to claim 1 or 6 is shared with a charging section of a two-stage drowsiness device. 9. An air cleaner with a filter, characterized in that the ozone addition device according to claim 1 is an ozone spouting section that communicates with an ozonizer. 10. An air purifier with a filter, which is provided with an ozone weighting device on the upstream side of the filter and an ozone removal device on the downstream axis. What is configured? ll-Featured filter-equipped air cleaner. 12. An air purifier with a filter, characterized in that the ozone removal device according to claim 10 is made of fibrous activated carbon formed entirely in a corrugated shape.