JPH0525526B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Fields In recent years, microorganisms in the living environment have become more and more airtight due to air-tightness of buildings, uniformity of air conditioning due to the spread of air-conditioning equipment, and changes in lifestyles (decrease in the number of housewives, etc.). As disasters come to the fore, interest in household hygiene is increasing. In particular, demands for dust collection and deodorization of indoor air are becoming stronger every year.

The present invention relates to a filter for an air cleaner that improves the effects of dust collection and deodorization of indoor air as described above, and also has an antibacterial and antifungal effect.

Conventional technology This type of equipment that has been used in the past uses filters made of fibrous woven fabrics, knitted fabrics, non-woven fabrics, various resins, ceramics, metal materials, etc. The mainstream was those that were used for deodorizing purposes using agents, etc., and those that had both functions.

Problems to be Solved by the Invention However, when these conventional air cleaners are used for a long period of time, mold spores, bacteria, etc. that have been taken in as dirt and dust in the air can accumulate on the filter surface.
Propagates using other organic dust and indoor moisture as nutrients,
This has become a huge problem from a sanitary standpoint as it is re-emitted from the exhaust gas and generates bad odors. Furthermore, a large amount of proliferated bacteria adheres to the surface of the adsorbent intended for deodorization, resulting in a decrease in the deodorizing ability of the adsorbent.

The present invention aims to solve these problems and provide an air cleaner filter that has the function of preventing bad odors caused by microorganisms (molds and bacteria) and re-emission from exhaust gas even after long-term use. .

Means for Solving the Problems In order to achieve the above object, the present invention provides an electrostatic filter for dust collection containing a halogenated aromatic compound type or an organic silane compound type antibacterial agent, or both, which exhibits antibacterial properties that are resistant to mold. The entire body is covered with a nonwoven fabric that contains, adheres to, and absorbs chemicals, and the adsorption filter for deodorization is made of diphenyl ether-based or silicone quaternary ammonium salt, which exhibits antibacterial properties that are strong against bacteria.
The entire structure is covered with a nonwoven fabric containing, adhering to, and adsorbing an organic nitrogen compound, divalent copper, or a combination thereof, and the two layers of the filter are subjected to antibacterial treatment.

Effect With the above configuration, when floating matter in the air is sucked into the air cleaner, mold spores, etc. are almost certainly removed by the electrostatic filter mesh, and fine particles, etc. are also charged, so that most of them are removed. is absorbed by the filter. Here, the germination and proliferation of mold is mainly inhibited using a drug that exhibits antibacterial properties that are strong against mold. Next, the ultrafine particles that have passed through the electrostatic filter are adsorbed by the adsorbent of the deodorizing filter, and their proliferation is prevented by an antibacterial agent that has a broad antibacterial spectrum against mainly bacteria.

Embodiments Hereinafter, embodiments will be described with reference to the accompanying drawings.

FIG. 1 is an overall view of the air cleaner, and FIG. 2 is the internal structure viewed from above. 5 is an electrostatic filter completely covered with an antibacterial nonwoven fabric, and 6 is a deodorizing filter completely covered with an antibacterial nonwoven fabric. The electrostatic filter 5 is made of a synthetic resin such as polyolefin, vinyl chloride, or polyethylene, which has a high dielectric constant, and is entirely covered with a nonwoven fabric made of the aforementioned synthetic resin that has been subjected to antibacterial treatment. In this electrostatic filter 5, not only airborne particles with a particle size larger than the filter mesh adhere to the filter and are removed from the air, but even fine particles with a small particle size become charged and become large. A portion is adsorbed by a filter and removed from the air. Since mold spores floating in the air fall into the former category, they almost completely adhere to the electrostatic filter 5 and are removed. Therefore, it is desired that the antibacterial component necessary for the electrostatic filter 5 not only be safe for the human body and have a long-lasting component effect, but also be highly effective in inhibiting the germination and growth of mold. here,
The entire electrostatic filter 5 is covered with an antibacterial nonwoven fabric containing, adsorbing, and adhering an antibacterial agent made of a halogenated aromatic compound, an organic silane compound having cationic activity, or both. These antibacterial non-woven fabrics contain antibacterial agents such as halogenated aromatic compounds and organic silane compounds for ordinary synthetic fibers such as polyester fibers, acrylic fibers, and nylon, and cellulose fibers such as cotton, rayon, and acetate fibers. It contains, adsorbs and adheres to, and has a broad antibacterial spectrum against various microorganisms that are widely distributed in the natural world.In particular, it is effective against various molds (such as Cladosporium genus and Alternaria genus) that are floating in large quantities in the air. On the other hand, it is effective in causing strong germination and growth inhibition at low concentrations.

Next, the antibacterial nonwoven fabric that covers the deodorizing filter installed at the rear is coated with bacteria that adhere to the ultrafine particles that have passed through the electrostatic filter on the front, and the surface of the adsorbent is covered, reducing the deodorizing performance.
Because of the need to prevent bad odors emitted by bacteria themselves, antibacterial nonwoven fabrics that have a broad antibacterial spectrum against bacteria are particularly desirable. Of course, it is safe for the human body and has long-lasting component effects.

In this example, an antibacterial component consisting of a diphenyl ether antibacterial agent, a silicon quaternary ammonium salt, an organic nitrogen compound, divalent copper, or a combination thereof is applied to synthetic fibers such as polyester fibers, acrylic fibers, nylon, etc. It is treated by containing, adhering to, and adsorbing cellulose fibers such as cotton, rayon, and acetate fibers.

As described above, the double antibacterial treatment has made it possible to remove airborne microorganisms, clean the filter, and extend the period of use of the filter.

<Experimental Example> The electrostatic filter 5 loaded on the front is made of polypropylene with a high dielectric constant, and is entirely covered with the same fibers as above which have been previously adsorbed with a halogenated aromatic compound, and dust is collected by applying a high voltage.
Halogenated aromatic compounds are effective in inhibiting the germination and proliferation of microorganisms, and are particularly effective against spores of molds such as Cladosporium, Alternaria, and Penicillium, which are floating in large quantities in the air.

The antibacterial nonwoven fabric covering the rear deodorizing filter 6 using activated carbon as an adsorbent is shown below.

This antibacterial nonwoven fabric is a fibrous filter made of thermoplastic resin such as polyester, acrylic, polypropylene, polyethylene, etc., and retains some elasticity like cotton. Diphenyl ether compounds are adsorbed onto this filter in advance, and the filter containing activated carbon is wrapped in honeycomb cells from both sides to form a deodorizing filter.
Diphenyl ether compounds, as antibacterial agents, exhibit particularly strong growth inhibition against bacteria. Shows strong inhibition of both gram yang and yin.

As mentioned above, two filters, each treated with antibacterial treatment, are used in an actual air cleaner (Figure 1).
used for. 1 is an air intake port, 2 is an air outlet, 3 is a control section, and 4 is a jig for setting a filter. Figure 2 shows the internal structure of this air cleaner when viewed from above. The filters 5 and 6 which have been subjected to antibacterial treatment are set by a jig 4 as shown in FIG. 7 is a pre-filter that removes large dust particles from the air; 5 is an electrostatic filter covered with a non-woven fabric containing ingredients that are effective in inhibiting the germination and growth of mold; and 6 is an electrostatic filter covered with a non-woven fabric that is effective in inhibiting the growth of bacteria. These filters 5 and 6 are as described above. 8 is a motor, 9 is a fan section, 10 is an air flow path, and 11 is an anode discharge electrode for applying a high voltage for electrostatic precipitation.

This air cleaner was operated for 24 hours, and mold and bacteria on the surface of each filter were sampled at the 4th and 24th hour, and the removal rate (number of sanitary items after 24 hours/number of sanitary items after 4 hours) was calculated. The results are shown below.

Removal rate Conventional electrostatic filter 1.25 Antibacterial electrostatic filter 0.85 Conventional deodorizing filter 0.69 Antibacterial deodorizing filter 0.10 As shown above, each of these was found to have a higher removal rate than the conventional filter.

Effects of the Invention As is clear from the above examples, in the air cleaner filter of the present invention,
Antibacterial treatment was applied to two layers: the electrostatic filter for dust collection and the adsorbent-containing filter for deodorization. Electrostatic filters efficiently capture mold spores in the air and use antifungal agents to prevent mold germination and growth, while deodorizing filters adsorb bacteria and use antibacterial agents to prevent growth.
As a result, mold spores and bacteria in the air are efficiently removed and are not released outside the machine again. In addition, as the electrostatic filter removes mold and prevents its germination and growth, no foul-smelling gas is generated and the performance of the adsorbent in the deodorizing filter is prevented from deteriorating, resulting in high efficiency and long-term use. It is possible to provide an air cleaner filter that can perform

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the entire air cleaner equipped with a filter according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the internal structure of the air cleaner. 5... Electrostatic filter, 6... Deodorizing filter.

Claims (1)

[Claims] 1. An electrostatic filter for dust collection is entirely covered with a nonwoven fabric that contains, adheres to, and adsorbs a halogenated aromatic compound or an organic silane compound antibacterial agent that exhibits antibacterial properties that are resistant to mold, or both of these agents.
Filters containing adsorbents for deodorization are made of diphenyl ether, silicon quaternary ammonium salts, organic nitrogen compounds, divalent copper, or a combination of these agents, which have strong antibacterial properties against bacteria.
An air cleaner filter that has two layers treated with antibacterial treatment by covering the entire surface with a nonwoven fabric that has been treated with adhesion and adsorption.