JPH02198614A - Air cleaning device - Google Patents

Abstract

PURPOSE:To treat various kinds of hazardous components by constituting a filer part removing the hazardous components, such as malodor, with at least two section, that is, the detoxication part making the hazardous components harmless and the adsorption part carrying out adsorption. CONSTITUTION:The filter part removing hazardous components, such as malodor, is constituted with at least two parts, that is, the detoxication part 1 which is provided with catalyst and makes the hazardous components harmless, and the adsorption part 2 which is provided with activated carbon, etc., adsorbing the detoxified matter or the matter not detoxified enough in the air. As a result, the device can be coped with the various kinds of hazardous components, for example, the removing of not only malodor components but also the hazardous components and odor components of cigaret.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air purifier that purifies and deodorizes air.

[Conventional technology]

Conventionally, for the purpose of purifying the indoor environment, many air purifiers have been commercially available for industrial and domestic use, and are used to remove WB odor and dust. These are usually equipped with filters and deodorizers. Traditionally, filters have been made of: (1) sheets of activated carbon or activated carbon fibers, or (2) sheets of activated carbon or activated carbon fibers, such as polyurethane foam impregnated with activated carbon or activated carbon fibers, or (2) combinations of carriers with metal oxides or metal catalysts. Two types of filters are known, such as one in which a heating element is installed near the filter to convert the odor into oxides by incineration.

[Problem to be solved by the invention]

However, none of the conventional air purifiers can remove all bad odors, and in particular, they are hardly able to remove the harmful and odor components of cigarettes, which have become a problem in recent years.

In view of these circumstances, it is an object of the present invention to provide an air purifier that is highly effective in removing harmful components.

[Means to solve the problem]

In order to solve the above problems, an air purifier according to the present invention is configured as follows.

That is, the air purifier according to claim 1 includes a filter section that removes harmful components such as odors, and this filter section is composed of at least two parts: a detoxification section that renders the harmful components harmless and an adsorption section that adsorbs them. ing. In the air purifier according to a second aspect of the present invention, the filter section further includes a part for removing dust. In the air purifier according to a third aspect of the present invention, the detoxification section further includes a catalyst for detoxification. The air purifier according to claim 4 is the air purifier according to claim 3, in which the filter section also includes a heating mechanism for heating the detoxifying section. The air purifier according to claim 5 further includes a mechanism in which the filter section can circulate air between the detoxification section and the adsorption section.

[For production]

Since the filter section has both a detoxification section that renders harmful components harmless and an adsorption section that adsorbs them, it can handle all kinds of harmful components (including odor components).

If it also has a part that can remove dust, it can not only purify the room from dust and mist but also prevent the activity of the filter part from decreasing due to dust.

When the detoxification section has a catalyst for detoxification, detoxification becomes easy and reliable. If the filter section is equipped with a heating mechanism that heats the detoxifying section, the catalytic reaction can be carried out efficiently. If the filter section is equipped with a mechanism that allows air to circulate between the detoxification section and the adsorption section, when purification is not required (when not in operation), air will be circulated only within the filter section and the air will be circulated between the adsorption section and the detoxification section. Adsorbed substances can be further decomposed and removed, eliminating the need for maintenance.

〔Example〕

FIG. 1 shows a simplified example of the configuration of a filter section of an air purifier according to the present invention.

This air purifier is equipped with an adsorption section 2 downstream of the detoxification section 1, but in the illustrated example, it is also equipped with a dust removal section 3 upstream of the detoxification section 1.

The detoxification unit 1 has a function of decomposing harmful components such as odor components to detoxify them, and includes, for example, aggregates of silica particles, aggregates of ultrafine silica particles and inorganic powder, clay-like substances, etc. Inorganic porous materials such as those made by drying or those made of inorganic fibers are preferably used. The inorganic porous material itself has a catalytic action, and can render harmful components harmless through a heating reaction or the like, and can also support another catalyst to exhibit a stronger catalytic action. More specifically, examples of carriers include silicate compounds such as alumina and silica-alumina, but the carrier is not limited to these as long as it has heat resistance and can serve as a carrier. Examples of catalysts that themselves act as catalysts include oxide catalysts such as perovskite catalysts, but the catalyst is not limited thereto as long as it exhibits similar effects. Examples of supported catalysts include metals such as platinum, silver, copper, chromium, palladium, and molybdenum, and oxides of these metals, but it goes without saying that other catalysts can be used depending on the application. .

The adsorption section 2 includes a ceramic adsorbent, activated carbon, etc., and adsorbs and removes substances that have been rendered harmless or substances that have not been rendered harmless from the air. More specifically, the adsorbent is a porous, preferably inorganic material (because it may be heated), such as alumina, zirconium phosphate, zeolite, activated carbon, layered compounds, glabellar compounds, etc. However, it is not limited to these,
The dust removal section 3, which is appropriately selected depending on its purpose and main target adsorbed material, is a sheet-like material made of, for example, paper, felt, nonwoven fabric, polyurethane foam, glass fiber, etc., and removes dust, mist, etc. in the air. Filter out.

The detoxification section 1 has a heating mechanism 11 around it.

This heating mechanism 11 heats up the detoxifying portion 1 by a force to activate the action of the catalyst and the like.

While the air flows as shown by the arrows in the figure, dust, mist, etc. are removed, harmful components such as odor components are rendered harmless and adsorbed, and the air is purified and sent out.

As shown in Fig. 2, if the filter section of the air purifier is provided with a mechanism for circulating air between the detoxification section 1 and the adsorption section 2, it can be used when air purification is not required. By operating this mechanism, the substance adsorbed on the adsorption section 2 can be further decomposed in the detoxifying section I to render it harmless. In this case, if the heating mechanism 21 is also provided in the adsorption section 2, the desorption of the adsorbed substance can be promoted or the adsorbed substance can be incinerated.

More specific embodiments of this invention will be described below.

Example 1 - An air purifier was constructed as shown in FIG. A ribbon heater was wound around the detoxification section 1, and a heat-resistant perovskite catalyst (Peroclean BBN6HO-15-PV, manufactured by Matsushita Electric Industrial Co., Ltd.) was used as a catalyst. For the adsorption section 2, a glass cloth was filled with granular inorganic adsorbent (Cerawhite, manufactured by Kigenso Kagaku Kogyo ■). The dust removal section 3 used a polyurethane foam sheet. Harmification department l,
The adsorption section 2 and the dust removal section 3 are both formed into plate shapes, with their surfaces facing each other, with a space of 1 (
The following sensory test was conducted to compare the deodorizing performance of such air purifiers arranged in parallel in a space of about 1+ m with a conventional adsorption filter type air purifier.

Internal volume 2.5n? Three unfiltered cigarettes (pieces) were burned in an acrylic resin box. After operating the air purifier for 60 minutes to purify the air inside the box, five testers sniffed the air inside the box.

The results were as shown in Table 1.

Table 1 - Example 2 - The air purifier used in Example 1 had a built-in mechanism for circulating air between the detoxification section and the adsorption section. For this, the same sensory test as in Example 1 was conducted. Thereafter, air was circulated using the built-in air circulation mechanism, and 20 minutes later, the same sensory test was conducted again.

The results were as shown in Table 2.

0...No odor Δ...A little odor ×...Odor 2nd Table 0...No odor △...A little odor ×... ...Odor [Effect of the Invention] In the air purifier according to the present invention, the filter part has at least two parts: a part that renders harmful components harmless and a part that adsorbs them.
Because it is equipped with two components, it is capable of removing not only malodorous components but also harmful components of tobacco and odor components, and can be used to deal with various harmful components.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of a filter section of an air purifier according to an embodiment of the present invention, and FIG. 2 shows a built-in circulation mechanism that circulates air between a detoxification section and an adsorption section. It is an explanatory diagram showing a state. ■...Detoxification section 2...Adsorption section 3...Dust removal section 11.21...Heating mechanism agent Patent attorney Takehiko Matsumoto

Claims (1)

[Scope of Claims] 1. An air purifier comprising a filter section that removes harmful components such as odors, and this filter section is composed of at least two parts: a detoxification section that renders the harmful components harmless and an adsorption section that adsorbs them. . 2. The air purifier according to claim 1, wherein the filter section also includes a part for removing dust. 3. The air purifier according to claim 1 or 2, wherein the detoxification section has a catalyst for detoxification. 4. The air purifier according to claim 3, wherein the filter section also includes a heating mechanism that heats the detoxifying section. 5. The air purifier according to any one of claims 1 to 4, wherein the filter section also includes a mechanism capable of circulating air between the detoxification section and the adsorption section.