JP2820587B2 - Air purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier having a deodorizing function and a sterilizing function.

[0002]

2. Description of the Related Art FIG. 6 is a principle diagram showing an electronic dust collecting section of a conventional air purifying apparatus. Contaminated air from which relatively coarse dust, dust and the like have been removed by a pre-filter 4 provided at an air inlet is shown in FIG. Fine particles such as dust and dust are charged by the charging unit 51. Next, the charged particles pass through the dust collecting section 52 and are adsorbed by the positive and negative electrode plates. The air from which the charged particles have been removed further passes through an activated carbon filter 53, whereby fine particles that could not be removed even in the dust collecting section 52 are removed and deodorized, resulting in clean air.

[0003]

Since the conventional air cleaning device is constructed as described above, fine dust and the like that cannot be completely removed by the pre-filter 4 and the dust collecting portion 52 adhere to the activated carbon filter 53. If the dust easily adheres to the activated carbon filter 53, the deodorizing effect is reduced. Further, since the pre-filter 4 is easily soiled, it must be cleaned frequently, which is troublesome. Furthermore, even if bacteria were contained in the taken-in air, they were sent out to the room as it was, and the air could not be completely purified.

[0004] The present invention has been made to solve the above problems, and an object of the present invention is to provide an air purifying apparatus which has an excellent deodorizing effect and can also obtain a sterilizing effect.

[0005]

According to the present invention, air is used.
A housing constituting an apparatus main body having an inlet and an air outlet, and an air flow path formed therebetween, and air taken into the housing, provided in the middle of the air flow path of the housing. Charging parts and dust that charge dust and dust contained in
An electronic dust collection unit composed of a dust collection unit that collects dust and the like electronically , and a fan that is also provided in the middle of the air flow path
And a tubular casing provided in the middle of the air flow path of the casing and having substantially all of two side surfaces facing the ozone generating section for generating ozone and the ozone decomposing section for decomposing ozone with openings. And a deodorizing unit integrally assembled with the
The solution has a relatively large surface with respect to the opening area of the case and
One opening of the case is substantially closed, and the ozone generating section is
Is assembled in the case, facing the ozonolysis section.
It is attached .

[0006]

[Effect] The electronic precipitator has an air purifying effect and a sterilizing effect, and the deodorizing unit has a deodorizing effect and a sterilizing effect by ozone. Therefore, the electronic precipitator and the deodorizing unit complement each other. Each effect is enhanced more than when each is used alone, and air can be completely purified.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a shape of an air flow path inside .
Housing constituting the made the apparatus main body, 2 intake air is provided in the housing 1 inlet, 3 air outlet provided in the housing 1, the pre-filter is provided inside the air inlet 2 4, 5 Numeral denotes an electronic dust collecting unit to which the air that has passed through the pre-filter 4 is supplied, and its configuration is the same as the configuration shown in FIG. However, in the present invention, since the deodorizing section is provided at the subsequent stage, the electronic dust collecting section 5 does not require an activated carbon filter. Reference numeral 6 denotes a germicidal lamp using ultraviolet light that illuminates the inside of the electronic dust collecting unit 5;
Reference numeral 7 denotes a mirror for reflecting the light of the germicidal lamp 6, which also serves as a dust cover for the germicidal lamp 6.

8 is a fan for sucking and blowing air, 9
Deodorizing section to which the air passing through the electronic dust collecting section 5 is supplied;
Reference numeral 0 denotes an operation panel on which various operation switches and indicator lights are arranged.

FIG. 3 shows the structure of the deodorizing section 9. In FIG. 3, three ozone generating elements 9 are provided in a cylindrical case 91.
2 (ozone generating section), a diffusion plate 94 provided with a large number of holes 93, and an ozone decomposition catalyst 9 having a honeycomb shape
5 (ozone decomposing units) are arranged in three stages above and below at a predetermined interval from each other, and are integrally assembled.
The ozone generating element 92 and the catalyst 95 are provided on two opposite sides.
Almost all assembled in a case 91 with an opening
The catalyst 95 is relatively large with respect to the opening area of the case 91.
It has a surface and substantially covers one opening of the case 91,
The ozone generating element 92 faces the catalyst 95 and faces the
And is assembled in the box 91. Further, three high voltage power supplies 96 for operating the three ozone generating elements 92 are provided. As the catalyst 95, a composite oxide (Mn /
TiO ₂ —SiO ₂ ) fired in a honeycomb shape is used.

FIG. 4 shows the structure of the ozone generating element 92, in which electrodes 92 are provided on both surfaces of an insulating plate 92a made of ceramic or the like.
b, 92c. The electrode 92b is a V-cut shape made of hard metal titanium as shown in the figure, and the electrode 92c is metal-deposited on the insulating plate 92a.

FIG. 5 shows a configuration of a drive circuit of the deodorizing section 9, in which a power supply fuse 97 and an ozone generation function ON / OFF are provided.
Switch 98, an ozone generation amount changeover switch 99, an operation display lamp 100, the high-voltage power supply 96, an ozone generation element 92, and the like.

A high-voltage power supply 96 includes a plurality of ozone generating elements 92.
, And each electrode 92b has 10
A high-frequency high voltage of about 20 KHz and about 6-7 KV is applied. The switch 99 can change the amount of ozone generated by switching the number of high voltage power supplies 96 used to one or three.

Next, the operation of the above configuration will be described. When the power is turned on and the fan 8 is driven, contaminated air in the room is sucked in from the air inlet 2, and rough dust and dirt are removed by the pre-filter 4 and then sent to the electronic dust collector 5. Charged particles in the charged portion 51 as described above in the electronic dust collecting part 5 is the dust collecting by the dust collecting portion 52
You . At this time, the electronic dust collecting section 5 is irradiated by the germicidal lamp 6, and the light including the ultraviolet light of the germicidal lamp 6 is reflected by the mirror 7 and is irradiated deep inside the electronic dust collecting section 5.

Accordingly, in the electronic dust collecting section 5, a sterilizing effect is obtained as well as a dust collecting effect. That is, since ozone is also generated in the charging unit 51 and the dust collecting unit 52, a deodorizing effect and a sterilizing effect by ozone can be obtained.

As described above, in the electronic dust collecting section 5, dust collection,
Air that has been sterilized and to some extent deodorized is then passed through fan 8
To the deodorizing section 9. Next, the deodorizing effect of ozone will be described.

Ozone O ₃ has a strong deodorizing effect, and oxidizes malodorous substances and changes them into odorless substances. In this case, when using ozone, it is necessary to prevent 0.1 ppm or more of ozone from being discharged to the outside. For this purpose, a catalyst 95 for decomposing ozone is used.

As a source of ozone, an ultraviolet lamp or corona discharge is used. The ozone generating element 92 used in the present embodiment generates a corona discharge due to a creeping discharge along the electrodes 92a and 92b by applying a high-frequency high voltage between the electrodes 92a and 92b. I am trying to make it. Also, the electrode 92b
Has a V-cut shape so that abnormal discharge due to adhesion of dust is less likely to occur.

A part of the malodorous substance entering the deodorizing section 9 is ozone (concentration: 0.1 to 10) diffused to the entrance by the diffusion plate 94.
(0.5 ppm) and oxidize by direct reaction (gas phase reaction) to deodorize. Ozone that did not react with the odorous substances is catalyst 9
5 and adsorb as oxygen O on the wall surface of the honeycomb-shaped cell. At this time, the remaining malodorous substances react with oxygen on the surface of the catalyst 95 to become odorless substances. Most of the deodorizing action takes place in this process. Further, the deodorizing section 9 also has a sterilizing action by ozone.

Further, in this embodiment, a plurality of ozone generating elements 92 are used, but one ozone generating element is driven by one high-voltage power supply 96. That is, one high-voltage power supply 9
6, it is possible to drive a plurality of ozone generating elements 92. In this case, however, a variation in the discharge voltage of each element makes it easy to discharge only certain elements, and the amount of ozone generated may not reach a predetermined amount. In this embodiment, a more reliable ozone generation amount can be obtained. In addition, a switch 99 for switching the number of drives of the plurality of ozone generating elements 92 is provided, and the amount of ozone generated can be switched according to use conditions.

As described above, the clean air that has been subjected to dust collection, sterilization and deodorization is blown into the room from the air outlet 3.

As described above, in the air purifying apparatus according to the present embodiment, the electronic dust collector 5 has a deodorizing effect and a sterilizing effect in addition to the dust collecting effect, and the deodorizing portion 9 has a sterilizing effect in addition to the deodorizing effect. have. Therefore, the respective effects in the electronic dust collecting section 5, the germicidal lamp 6, and the deodorizing section 9 complement each other, and the respective effects are further enhanced, so that the air can be substantially completely purified. Table 1 shows the respective effects of the electronic dust collecting section 5, the germicidal lamp 6, and the deodorizing section 9, and double circles, circles, and triangles indicate the degree of each effect.

[0022]

[Table 1]

[0023]

As described above, according to the present invention, the air
Intake has an inlet and an air outlet, a housing constituting the apparatus main body air flow path is formed therebetween, and provided in the middle of the air flow path of the housing, the air taken into the housing Charging parts and dust that charge dust and dust contained in
An electronic dust collection unit composed of a dust collection unit that collects dust and the like electronically , and a fan that is also provided in the middle of the air flow path
And a tubular casing provided in the middle of the air flow path of the casing and having substantially all of two side surfaces facing the ozone generating section for generating ozone and the ozone decomposing section for decomposing ozone with openings. And a deodorizing unit integrally assembled with the
The solution has a relatively large surface with respect to the opening area of the case and
One opening of the case is substantially closed, and the ozone generating section is
Is assembled in the case, facing the ozonolysis section.
Since it is configured to be attached, the dust collecting effect, the sterilizing effect, and the deodorizing effect in each part complement each other, and the air can be purified more completely. Further, since it is not necessary to provide an activated carbon filter for deodorization in the electronic dust collecting portion, it is possible to obtain such an effect that the deodorization effect is not deteriorated due to adhesion of minute dust and the like. Furthermore, since the deodorizing section is configured by integrally assembling the ozone generating section and the ozone decomposing section with a case, the air flow path of the housing constituting the device body does not rust, and the case is rusted. Since only the case needs to be replaced, the effect of extending the life of the device can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an air cleaning device according to an embodiment of the present invention.

FIG. 2 is an external perspective view of the device.

FIG. 3 is a perspective view showing a configuration of a deodorizing section.

FIG. 4 is a perspective view showing an ozone generating element.

FIG. 5 is a configuration diagram showing a drive circuit of a deodorizing section.

FIG. 6 is a configuration diagram of an electronic dust collector showing a conventional air cleaning device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 housing 5 electronic dust collecting part 6 germicidal lamp 9 deodorizing part 51 charging part 52 dust collecting part 91 case 92 ozone generating element (ozone generating part) 95 catalyst (ozone decomposing part)

Continuation of the front page (56) References JP-A-3-86261 (JP, A) JP-A-5-264057 (JP, A) JP-A-2-25035 (JP, U) JP-A-2-96520 (JP) , U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B03C 3/00-3/88 A61L 9/00-9/22 B01D 53/34-53/96 F24F 7/00 F24F 1 / 00 F24F 1/02

Claims (1)

(57) [Claims] An air inlet and an air outlet are provided between the air inlet and the air outlet.
A housing constituting the apparatus main body air flow path is formed in,
A charging unit provided in the middle of the air flow path of the housing, a charging unit for charging dust and dust contained in the air taken into the housing, and a dust collection unit for electronically collecting dust and dust. The configured electronic precipitator and also in the middle of the air flow path
In the air flow path of the housing
The two sides facing the ozone generating section for generating ozone and the ozone decomposing section for decomposing ozone are substantially opened.
It has a deodorizing part integrated with a cylindrical case penetrated by the mouth, and the ozone decomposition part is compared with the opening area of the case.
Cover the one opening of the case
The ozone generator is located close to the ozone decomposer.
An air purifying device, which is assembled in a case facing the surface.