JP2002306587A - Air cleaner and air cleaning filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adapt an air cleaning filter to different air cleaners by variously changing the shape of the filter. SOLUTION: The air cleaner is provided with a plurality of air cleaning filters 2 and connection parts 3 for interconnecting the adjacent cleaning filters 2 to be bendable, so that the filters can easily be changed in shape and made adaptive to the shape of the air cleaner. Then efficiency in contact with contaminated air is enhanced, number of contact times are increased and the performance of removing contaminated substance is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention purifies odorous substances and other harmful substances contained in an air atmosphere or the like.
The present invention relates to an air purification device and an air purification filter.

[0002]

2. Description of the Related Art As an air purification filter used in an air purification apparatus, there are an adsorption method using an adsorbent and a photocatalyst method using a photocatalytic action and an adsorbent in combination.
This is a method in which malodorous gas molecules are physically adsorbed to an adsorbent such as activated carbon and deodorized. The photocatalytic method is a method in which ultraviolet rays are applied to a catalyst to oxidatively decompose malodorous components and bacteria by radicals generated.

[0003]

However, most of the air purification filters in the air purification devices currently put into practical use are mostly of a flat plate type. It is difficult to apply the present invention to an air purifying device having the shape described above.

In general, in an air purification device, the efficiency of contact between the air purification filter and the contaminated air is high, and the greater the number of times of contact, the higher the contaminant removal performance. However, many of the general air purifying filters have a honeycomb core filled with activated carbon or the like, and it cannot be said that both the contact efficiency and the number of times of contact are high.

[0005]

In order to solve the above-mentioned conventional problems, an air purifying filter according to the present invention comprises a plurality of purifying filters and a plurality of adjacent purifying filters among the plurality of purifying filters which are bendably connected. Since the shape of the air purifying device can be easily changed, the shape of the air purifying device can be changed. Further, the contact efficiency with the contaminated air is high, the number of times of contact is increased, and the performance of removing contaminants can be improved.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 is an air purification filter comprising a plurality of purification filters and a connecting portion for connecting adjacent purification filters among the plurality of purification filters in a bendable manner. Yes, the shape can be easily changed, it can be incorporated into air purifiers of various shapes, and the removal performance can be improved.

According to a second aspect of the present invention, there is provided a support folder for supporting the periphery of the purification filter of the first aspect, and the support folders are connected to each other via a connection portion.
The connecting portion can be manufactured with a simple configuration.

According to a third aspect of the present invention, in particular, the purifying filter according to the first or second aspect is provided with a purifying agent on a rigid base material, and the purifying filter is a rigid base material. Can be easily manufactured.

In the invention according to claim 4, the base material according to claim 3 is a ceramic honeycomb, and the removal performance is improved because the surface area is large.

According to a fifth aspect of the present invention, there is provided an air inlet through which air is introduced, an air purifying filter according to any one of the first to fourth aspects, and a drain for discharging the air purified by the air purifying filter. The air purifying apparatus is provided with an outlet and a blower for sucking air into the air inlet. Accordingly, the contact efficiency with the contaminated air is high and the number of times of contact is large, so that the contaminants can be efficiently removed. Also,
For example, in the case of an air purification device including a purification filter in which a metal oxide for removing at least a sulfur-based gas is supported on a ceramic honeycomb and a purification filter in which activated carbon or zeolite is supported, as in the examples described below, It purifies air pollutants, mainly sulfur-containing gases, and purifies other gases, such as VOCs, with a layer of activated carbon or zeolite. By doing so, effective treatment for each contaminated gas can be performed. Therefore, the design of the purification filter according to the installation location of the air purification device is facilitated.

According to a sixth aspect of the present invention, there is provided the purification filter according to any one of the first to fourth aspects, wherein the purification surface is concavely curved with respect to the ventilation direction, so that the contaminated air and the contaminated air can be prevented. The contact area can be increased, and contaminated air removal performance can be improved. Further, as in the embodiments described below, in the case of an air purification device including a light source, a purification filter carrying activated carbon or zeolite and a photocatalyst,
By uniformly irradiating the light from the light source to the entire surface of the air purification filter, it is possible to improve the performance of the photocatalyst for decomposing pollutants adsorbed on activated carbon or zeolite.

According to a seventh aspect of the present invention, the purification filter according to any one of the first to fourth aspects is combined so as not to be orthogonal to the ventilation direction, so that the contact area with the contaminated air is increased. It can improve the performance of removing contaminated air.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the air purifying filter has a cylindrical shape, so that the apparatus can have a more compact configuration. The contaminated air uniformly contacts the entire surface of the purification filter, so that the purification performance can be further improved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an air purification filter according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a supporting folder for supporting the purifying filter, 2 denotes a ceramic honeycomb purifying filter which is a purifying filter, and 3 denotes a connecting portion for connecting the supporting folders 1 to each other.

The support folder 1 is made of stainless steel having a thickness of 0.5 mm, and a connecting portion 3 between the support folder 1 and the support folder 1 is made of silicon rubber which is strong against bending. As the purification filter 2, a ceramic honeycomb having 200 cells per square inch was used. Six purification filters 2 are sandwiched and fixed by a support folder, and the connection portions 3 are connected by using silicone rubber and an adhesive. Since each of the purification filters can be bent between the adjacent purification filters, the shape can be freely changed from a planar shape to a cylindrical shape. This makes it possible to incorporate this filter into air purifiers of various shapes.

In this embodiment, six purification filters are used, but the present invention is not limited to this.

(Embodiment 2) FIG. 2 is a schematic perspective view of an air purifying apparatus according to a second embodiment of the present invention. In FIG. 2, reference numeral 10 denotes an outer housing, one of which is provided with an air inlet 11 and the other is provided with an air inlet 12. Then, the dust filter 13 and the reflection plate 1 are sequentially arranged from the intake port 11 side.
4, light source 15, purification filter 16 made of metal oxide,
A purifying filter 17 made of activated carbon or zeolite and a photocatalyst, and a fan 18 as a blowing means are provided.

The dust filter 13 is a pleated high-performance HEPA filter that traps fine particles such as cigarette smoke. The metal oxide used for the purification filter 16 is preferably one that selectively adsorbs a sulfur-based gas and has excellent ability to adsorb other odorous substances. These metal oxides are coated on ceramic honeycombs at 200 cells per square inch. Activated carbon used for the purification filter 17 was coconut shell activated carbon powder. The activated carbon is not limited to coconut shell raw material, but may be coal, resin or the like. As the zeolite, a hydrophobic zeolite having an excellent ability to adsorb VOC and odorous substances is preferable. As the photocatalyst, a semiconductor substance such as anatase type, rutile type titanium oxide, or zinc oxide, or a substance in which ultrafine metal particles such as platinum are supported on these substances are used. In this example, a ceramic honeycomb was coated with an anatase-type titanium oxide obtained by sufficiently kneading zeolite and titanium oxide powder. In addition,
The zeolite honeycomb formed body may be coated with titanium oxide powder. As the light source 15, a lamp having a wavelength for exciting the photocatalyst is used. In this example, a black light mercury lamp sufficient to excite titanium oxide was used,
A germicidal lamp or a cold cathode ultraviolet lamp may be used. In this embodiment, in order to sufficiently excite the titanium oxide, the intensity of the 360 nm ultraviolet light on the surface of the purification filter 17 on the light source 15 side is set to be about ² mW / cm ² .

The operation and operation of the air purifying apparatus configured as described above will be described below.

When the power of the blower 18 and the light source 15 is turned on,
Air contaminated with house dust, cigarette smoke, foul odor, VOC, etc., enters through the air inlet 11. Then, smoke and house dust are collected by the dust collection filter 13. The remaining sulfur-based gas and other odors are adsorbed by the metal oxide of the purification filter 16, and VOC and other gases are adsorbed by the zeolite of the purification filter 17. The air thus purified is returned from the air supply port 12 to the room. On the other hand, purification filter 1
The malodorous substance adsorbed on the zeolite No. 7 is gradually decomposed by the action of titanium oxide excited by ultraviolet rays emitted from the light source 15, and the zeolite is regenerated.

Hereinafter, the purification performance of this embodiment will be described with reference to FIG.
This will be described with reference to FIG. FIGS. 3 and 4 are graphs showing the results of evaluating the purification performance of the air purification device of the present embodiment and the air purification device using the conventional air purification filter in a 6 m ³ closed box. The test gases were hydrogen sulfide and VOC, and the initial concentration of each gas was 20 ppm. In the air purification device of the present embodiment, the metal oxide of the purification filter 16 was 100 g, the zeolite of the purification filter 17 was 50 g, and the titanium oxide was 50 g. In a conventional purification filter, 100 g of metal oxide pellets, 50 g of zeolite pellets, and 50 g of titanium oxide powder supported on the surface are filled in a flat paper core honeycomb having 6 cells per square inch, and nonwoven fabric is applied on both sides. The pellets are held by bonding.

FIG. 3 shows the time change of the hydrogen sulfide concentration, and FIG. 4 shows the time change of the toluene concentration. 3 and 4
, The dotted line indicates the case of the conventional example, and the solid line indicates the case of the present embodiment.

From the above results, the air purifying apparatus using a purifying filter composed of a combination of two different purifying filters according to the present embodiment is different from the conventional purifying filter in which pellets are filled in a paper core honeycomb. The removal performance of hydrogen sulfide was very high, and the removal performance of toluene was also high. For example, in a kitchen or the like where a large amount of sulfur-based gas is generated, efficient purification can be achieved by combining many metal oxide filters. Further, when titanium oxide is carried on the entire surface of the purification filter, it is necessary to increase the number of light sources in order to sufficiently excite the titanium oxide. However, in the case of the air purification filter of this embodiment, it is efficient with a small number of light sources. Purification performance can be obtained. In addition, the metal oxide filter is periodically replaced, and the zeolite / photocatalyst filter is maintenance-free, so that the running cost can be suppressed as compared with the conventional case.

(Embodiment 3) FIG. 5 is a perspective view of a purification filter according to a third embodiment of the present invention. Examples 1 and 2
The same parts as those described above are denoted by the same reference numerals and description thereof will be omitted.

In FIG. 5, purification filters 21 and 22 differ from the purification filters 16 and 17 of the first embodiment in that their shapes are concavely curved with respect to the ventilation direction. These two types of six purification filters 21 and 22 were sandwiched by the support folder 1 and the connection part 3 was connected using silicone rubber and an adhesive.

The air purifying filter of this embodiment has the same vertical and horizontal sizes and a larger surface area than the air purifying filter described in the first embodiment, so that the performance of removing malodorous substances is improved. Further, since the purification filter 22 is curved,
Ultraviolet rays from the black light are uniformly irradiated, and the malodor and VOC adsorbed on the zeolite are further decomposed, and the zeolite is regenerated.

(Embodiment 4) FIG. 6 is a perspective view of a purification filter according to a fourth embodiment of the present invention. Examples 1-3
The same parts as those described above are denoted by the same reference numerals and description thereof will be omitted.
The present embodiment is different from the first to third embodiments in that each purification filter is disposed so as not to be orthogonal to the ventilation direction.

The air purifying filter of the present embodiment has the same vertical and horizontal sizes and a larger surface area than the air purifying filter described in the first embodiment, so that the performance of removing malodorous substances is improved.

(Embodiment 5) FIG. 7 is a perspective view of an air purification filter according to a fifth embodiment of the present invention, and FIG. 8 is a schematic perspective view when the air purification filter of this embodiment is incorporated in a cylindrical air purification device. FIG. The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and description thereof will be omitted.

Six purification filters were combined to form a hollow regular hexagonal prism. Note that any number of purification filters may be combined, and the shape of one purification filter may be a hollow columnar shape formed by combining curved filters instead of flat plates.

By incorporating the air purifying filter constructed as described above into a cylindrical air purifying apparatus, the installation area of the apparatus becomes significantly smaller than that of the air purifying apparatus of the second embodiment. Further, since the purification filter is cylindrical, contaminated air is uniformly sucked from the entire surface of the purification filter, and the purification performance is improved.

[0033]

As described above, according to the present invention, the shape of the filter can be easily changed, and the filter can be incorporated into various types of air purifying devices. Further, even in a filter having a complicated shape, the efficiency of contact with the contaminated air is high, and a high number of times of contact makes it possible to obtain high contaminant removal performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an air purification filter according to Embodiment 1 of the present invention.

FIG. 2 is a schematic perspective view illustrating a configuration of an air purification device according to a second embodiment of the present invention.

FIG. 3 is a graph showing a comparison of purification performance between Example 2 of the present invention and a conventional example.

FIG. 4 is a graph showing a comparison of purification performance between Example 2 of the present invention and a conventional example.

FIG. 5 is a perspective view illustrating a configuration of an air purification filter according to a third embodiment of the present invention.

FIG. 6 is a perspective view illustrating a configuration of an air purification filter according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view illustrating a configuration of an air purification filter according to a fifth embodiment of the present invention.

FIG. 8 is a schematic perspective view illustrating a configuration of an air purification device according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support folder 2 Ceramic honeycomb purifying filter 3 Connection part 16, 21 Metal oxide purifying filter 17, 22 Zeolite / photocatalytic purifying filter 18 Fan (blowing means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F24F 7/013 101 F24F 7/013 101G (72) Inventor Yu Fukuda 1006 Odakadoma, Kadoma, Osaka Matsushita Electric Within Sangyo Co., Ltd. (72) Inventor Shizuka Azusa 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) MM08 NN02 QQ17 QQ20 4D019 AA01 BA05 BB07 BC05 BC07 BC10 CA01 CA02 4D058 JA14 JA32 JB06 KC39 KC52 TA02 TA06 TA07 UA08

Claims (8)

[Claims] 1. An air purifying filter comprising: a plurality of purifying filters; and a connecting portion for connecting adjacent purifying filters among the plurality of purifying filters in a bendable manner. 2. The air purification filter according to claim 1, further comprising a support folder for supporting a periphery of the purification filter, wherein the support folders are connected to each other via a connection portion. 3. The air purifying filter according to claim 1, wherein the purifying filter is provided with a purifying agent on a rigid base material. 4. The air purification filter according to claim 3, wherein the base material is a ceramic honeycomb. 5. An intake port for introducing air, and an air inlet for introducing air.
An air purifying apparatus comprising: the air purifying filter according to any one of the above, an outlet for discharging air purified by the air purifying filter, and a blowing unit for sucking air into the air inlet. 6. The air purifying filter according to claim 1, wherein the purifying filter comprises a purifying filter whose purifying surface is concavely curved with respect to the ventilation direction. 7. The air purification filter according to claim 1, wherein the air purification filter is coupled so as not to be orthogonal to the ventilation direction. 8. The method according to claim 1, wherein the cylindrical shape is used.
Item 12. The air purification filter according to Item.