JP2014144421A - Deodorization-gas removal filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter capable of removing pollutant gas such as alkaline gas or sour gas included in the atmosphere, in addition to removal of a conventional dust particle, in an air-conditioning system to building air-conditioning, a hospital facility and a clean room.SOLUTION: An adhesive medium of a binder, melting fiber or adhesive powder is attached to nonwoven fabric or woven fabric composed of synthetic fiber or glass fiber and natural fiber having a fiber diameter of 0.3-50 μm and a thickness of 0.1-1.0 mm, and an ultrafine fiber layer having a fiber diameter of 0.01-0.5 μm is laminated, and the dust removal function is imparted as a laminate filter material of integrating the nonwoven fabric or the woven fabric and ultrafine fiber, and deodorization-gas removal performance is also enhanced by fixing a catalyst of reacting with a malodorous substance-harmful gas being an object to a surface of the ultrafine fiber layer, and the deodorization-gas removal filter having both the deodorization-gas removal function and the dust removal function is formed by sandwiching fine active charcoal in this.

Description

The present invention relates to a filter for deodorization and gas removal capable of simultaneously removing dust particles contained in the air-conditioning air and atmospheric air and polluting gases such as alkaline gas and acid gas.

  Along with recent environmental changes, air conditioning systems for building air conditioning, hospital facilities, clean rooms, etc. require removal of pollutant gases such as alkaline gas or acid gas contained in the atmosphere in addition to conventional dust particle removal. It has come to be.

  In general, in an air filter, a filtration type air filter is used in which air to be treated is filtered through a filter medium to remove dust contained in the air. There are various types of filtration air filters. Pre-filters for coarse dust, medium performance filters for slightly fine dust, HEPA and ULPA filters for very fine dust, etc. are used in appropriate combinations depending on the application. Yes.

  On the other hand, an adsorption filter using a physical adsorbent such as activated carbon or an adsorbed charcoal that attaches a chemical to the adsorbent and removes it by a chemical bond is used for removing the gaseous substance.

However, the filtration type air filter cannot remove gaseous substances contained in the air, and the adsorption filter such as activated carbon cannot remove the dust in the air. When removing dust and gaseous substances at the same time, it is necessary to continuously arrange these filters in two stages and to pass the processing air, which has the following problems.
(1) The granular activated carbon-shaped adsorption filter has a problem that the pressure loss of the filter becomes high and the passing air volume decreases, and further, when the filter-type air filter for dust removal is continuously arranged in two stages, the pressure loss of the entire apparatus is reduced. Increase significantly.
(2) The amount of activated carbon used in the granular activated carbon-shaped adsorption filter increases, and the volume of the filter also increases, so that the installation space for mounting becomes large, and the casing for storing the filter also becomes complicated to process and assemble. Cost increases.

  Therefore, Patent Document 1 proposes a filter pack in which a filter medium in which adsorbent particles are sandwiched between nonwoven fabrics is folded in a zigzag shape and a dust removal filter housed in a filter frame is laminated on the downstream side. However, even in this case, a dust filter and a deodorizing filter are separately arranged, so that there is a problem that space saving is difficult and pressure loss in the entire filter increases.

JP 2010-125426 A

The present invention has been made in view of the above circumstances, and the object of the present invention is to have a dust removal function and a gas removal function integrally, and for deodorization and gas removal that can simultaneously realize a harmful substance collection, removal function and a filtration function. An attempt was made to provide a filter.

Furthermore, the object of the present invention is to achieve a space saving of the filter by using a filter for deodorizing and removing gas with a greatly reduced filter volume while maintaining a gas removal rate equal to or higher than that of a conventional adsorption filter. It is what.

Furthermore, the purpose of the present invention is to achieve energy saving of the filter by using a filter for deodorization and gas removal that greatly reduces pressure loss while maintaining the dust removal efficiency equivalent to or better than the conventional filtration air filter. It is what I tried.

Furthermore, the object of the present invention is to weave a filter medium for laminated filters that has both a dust removal function and a deodorization / gas removal function while realizing low pressure loss, thereby increasing the filter medium area and reducing the filter volume. The present invention is intended to provide a deodorizing / gas removing filter capable of extending the service life and cost.

The first solving means of the present invention is a laminated filter medium having a dust removal function using a nonwoven fabric or woven fabric made of synthetic fiber, glass fiber, natural fiber, etc., and integrated with fine activated carbon sandwiched between them, A deodorizing / gas removing filter having both a deodorizing / gas removing function and a dust removing function is provided.

The second solving means of the present invention is to remove a non-woven fabric or woven fabric made of synthetic fiber, glass fiber, natural fiber, or the like by attaching an adhesive medium of binder, molten fiber, or adhesive powder, and laminating an ultrafine fiber layer. A filter filter for deodorization and gas removal that has both a deodorization and gas removal function and a dust removal function as a laminated filter medium with dust function and sandwiched with fine activated carbon. .

A third solution of the present invention is to laminate a superfine fiber layer by attaching an adhesive medium of a binder, a molten fiber or an adhesive powder to a base material of a nonwoven fabric or a woven fabric made of synthetic fiber, glass fiber, natural fiber or the like. It has a function of dust removal, and a laminated filter medium in which this is combined with fine activated carbon sandwiched between non-woven fabrics or woven fabrics, and has both a deodorization / gas removal function and a dust removal function. The present invention provides a filter for deodorization and gas removal.

According to a fourth solution of the present invention, a binder, molten fiber or adhesive powder adhesive medium is attached to a nonwoven fabric or woven fabric made of synthetic fiber, glass fiber, natural fiber, or the like, and a superfine fiber layer is laminated and removed. Laminate that has a function of dust and improves the deodorization and gas removal performance by fixing a catalyst that reacts with the target malodorous substances and harmful gases on the surface of the ultra-fine fiber layer, and sandwiching fine activated carbon in this layer The present invention provides a filter for deodorization / gas removal having both a deodorization / gas removal function and a dust removal function as a filter medium.

According to a fifth solution of the present invention, a superfine fiber layer is laminated by attaching an adhesive medium of a binder, a molten fiber or an adhesive powder to a base material of a nonwoven fabric or a woven fabric made of synthetic fiber, glass fiber, natural fiber or the like. It has a function of removing dust, and a catalyst that reacts with the target malodorous substances and harmful gases is fixed to the surface of the ultra-fine fiber layer or substrate to improve the deodorization and gas removal performance. The present invention provides a filter for deodorization / gas removal that has both a deodorization / gas removal function and a dust removal function as a laminated filter medium obtained by superimposing fine activated carbon sandwiched between cloths.

According to a sixth solution of the present invention, the above-mentioned laminated filter medium is woven into a pleat shape to increase the area of the filter medium, increase the processing air volume and reduce the filter volume, and separately dispose the dust filter and deodorizing filter. The present invention provides a filter for deodorizing and removing gas that can save space without having to do so.

According to a seventh solution of the present invention, the laminated filter media are arranged in a zigzag manner to increase the filter media area, increase the processing air volume, reduce the filter volume, and remove the dust filter and deodorizing filter. The present invention provides a deodorizing / gas removing filter that can save space without being separately arranged.

Here, the nonwoven fabric or the woven fabric has a fiber diameter of 0.3 to 50 [mu] m and a thickness of 0.1 to 1.0 mm, such as polyester fiber, polyamide fiber, polyethylene fiber, rayon, polypropylene fiber, etc., organic fiber, glass fiber, pulp fiber Can be used. These may be used alone or in combination of two or more.

As a method for forming these nonwoven fabrics or woven fabrics, a method using a wet papermaking method, a dry method, a spunbond method, a melt blow method, an electrospinning method, or the like is used.

  The fine activated carbon is made of wood, coconut shell, coal, or the like, and is added with an alkaline substance or an acidic substance for chemical bonding with the target gas as required. The particle size of the fine activated carbon is in the range of 30 to 100 mesh, preferably 40 to 80 mesh. The basis weight of the fine activated carbon is 100 to 1000 g / m2, preferably 300 to 600 g / m2.

As the adhesive medium, a binder, molten fiber, adhesive powder, or the like is used. As the binder, an organic binder, an inorganic binder, or a mixed binder obtained by mixing is used. An acrylic resin is preferably used. As the molten fiber, a fiber having a core-sheath structure is used. Further, resin powder having a low softening point is used as the adhesive powder.

The ultra-fine fiber refers to a fiber having a single fiber diameter in the range of 0.01 to 0.5 μm, and the form thereof may be a fibrous form and does not stick to the length or the cross-sectional shape. The material constituting the ultrafine fiber is not particularly limited, and examples thereof include polyester, polyamide, polyolefin, polyphenylene sulfide (PPS), and the like. Examples of the polyester include polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), and polylactic acid (PLA). Examples of polyamide include nylon 6 (N6), nylon 66 (N66), nylon 11 (N11), and the like. Examples of the polyolefin include polyethylene (PE), polypropylene (PP), and polystyrene (PS). In addition to the above materials, it is of course possible to use phenol resins, polyacrylonitrile (PAN), polyvinyl alcohol (PVA), polyethersulfone (PES), polysulfone, fluorine-based polymers and their derivatives.

The super extra fine fiber layer used in the present invention is composed of the super extra fine fibers as described above, but the super extra fine fibers are preferably not in a bundle but in a state in which the extra extra fine fibers are dispersed. This is because the ultrafine fiber has a slip flow effect that improves the fluid flow and lowers the pressure loss.

The ultrafine fiber layer is produced by an electrospinning method. The electrospinning method is a conventionally known method, and is a method of drawing and fiberizing by applying an electric field to a spinning solution supplied from a nozzle or the like.

Since this ultra-fine fiber layer cannot maintain strength by itself, it has sufficient strength when used in combination with a substrate, and is excellent in the workability of various filters. The ultrafine fiber layer can be formed by laminating the fiberized ultrafine fibers on a nonwoven fabric or woven fabric as a base material. The nonwoven fabric or woven fabric used as the substrate is not particularly limited as long as it can collect ultra-fine fibers and can maintain the workability and strength of the filter.

  As a catalyst that reacts with a target malodorous substance or harmful gas, a composite oxide catalyst made of a noble metal such as platinum or palladium, a metal such as copper or iron, tungsten, titanium, or the like is used. The size of the catalyst is 1 to 100 nm, preferably 10 to 50 nm.

  These catalysts are mixed with the above ultra-fine fiber raw material polymer and spun simultaneously with the ultra-fine fiber by electrospinning to obtain a super-fine fiber layer having the function of a catalyst that reacts with malodorous substances and harmful gases. It is done.

Furthermore, another form of combining the catalysts is to attach an adhesive medium of a binder, molten fiber or adhesive powder on the surface of the ultrafine fiber layer and dry-fix the catalyst that reacts with malodorous substances or harmful gases, or ultrafine. It is obtained by attaching a binder, molten fiber or adhesive powder adhesive medium to the surface of the substrate on which the fiber layer is laminated, and drying and fixing.

The ultrafine fiber layer with the catalyst function obtained in this way is in contact with pollutant gases such as alkaline gas and acid gas in the air, so that the ultrafine fibers with a large surface area come into contact with the gas and efficiently contact them. The pollutant gas removal rate is excellent.

The deodorization / gas removal filter may have a configuration in which an ultrafine fiber layer having a fiber diameter of 0.01 to 0.5 μm is laminated on a nonwoven fabric or woven fabric to which an ion exchange group or a chemical is added, and combined with a catalyst.

The production of a filter for deodorization and gas removal that has a high-efficiency dust trapping function while exhibiting a low pressure loss and a function of adsorbing polluted gases is not possible. Folded filter media, which is formed by appropriately stacking and integrating fine activated carbon sandwiched between fiber layers, catalysts, nonwoven fabrics or woven fabrics, are folded into pleats and folded into pleats. A cell-type filter frame sandwiched between and attached with a sealing material on the inside is attached in an airtight state.

In another form, the above-mentioned laminated filter medium is cut into a predetermined size, these are arranged in a zigzag shape and connected with a sealing material, and a cell-type filter frame having a sealing material on the inside has airtightness. It is attached in the state.

  The operation of the above problem solving means is as follows.

  The deodorizing / gas removing filter of the present invention is attached to an air conditioner, and the gas to be treated is sucked into the deodorizing / gas removing filter by the operation. First, solid particles such as dust contained in the gas to be treated are collected by a nonwoven fabric or woven fabric having a dust removal function when passing through a deodorizing / gas removing filter and discharged as clean air. At this time, since the ultrafine fibers are laminated on the nonwoven fabric or the woven fabric, high collection efficiency can be exhibited while maintaining a low pressure loss.

Next, malodorous and harmful gases such as NOx, SOx, and ammonia gas contained in the gas to be treated pass through the fine activated carbon sandwiched between the nonwoven fabric and woven fabric, and are collected and adsorbed on the filter for deodorization and gas removal. And discharged as clean air. At this time, when a catalyst that enhances the deodorization / gas removal function together with the ultra-fine fiber layer is combined with the laminated filter medium, it can react with the bad odor / toxic gas that has flowed in to reduce the concentration and reduce the load on the activated carbon. Because of this, it is possible to exhibit even higher deodorization and gas removal performance.

In addition, the type and amount of fine activated carbon and catalyst can be changed according to the nature and amount of harmful substances contained in the gas to be treated, so the gas removal function and dust removal function work well and the life span is almost the same. At the same time, the problem that one of the functions is lost as soon as in the past and a new deodorizing / gas removing filter must be replaced is solved.

This also reduces the frequency of replacement of the deodorization / gas removal filter, so that the replacement work is not time-consuming and stable performance can be obtained over a long period of time, thereby reducing operating costs.

Furthermore, since the particulate catalyst is fixed by the binder on the surface of the dust collecting side of the deodorizing / gas removing filter, the particulate catalyst is not attached to the cleaned air discharge side. For this reason, the catalyst is not peeled off from the deodorizing / gas removing filter and scattered in the purified air. Therefore, the purified air is not contaminated.

(1) By using a filter for deodorization and gas removal using ultrafine fibers, the pressure loss of the filter medium itself can be reduced, and the passing air volume can be secured.
(2) By using super extra fine fibers, the specific surface area can be increased and the gas removal performance can be effectively enhanced.
(3) Since the deodorization and gas removal filter is integrated with the dust removal function and the gas removal function, the filter that has been manufactured separately can be combined into one, reducing installation space and installation cost. be able to.
(4) By laminating ultra-fine fibers on various substrates, it is possible to manufacture filters for deodorization and gas removal according to various applications.
(5) Since the filter for deodorizing and removing gas is formed by integrating a nonwoven fabric or a woven fabric on the surface of a thin layer of ultrafine fiber, the ultrafine fiber layer is not damaged or peeled off and scattered. It can be processed into various shapes by changing the surface layer.
(6) By selecting and laminating fine activated carbon and catalyst according to the purpose and amount, harmful substances collected in the filter for deodorization and gas removal can be stably captured for a long period of time. Therefore, the harmful substance collected in the deodorizing / gas removing filter is not detached and re-scattered, and the safety and performance are high.
(7) Depending on the type, nature, and concentration of the hazardous substance contained in the gas to be treated, the type, nature, and layer thickness of the ultra-fine fibers, fine activated carbon, and catalyst that are laminated on the filter surface for deodorization and gas removal Since it can be changed, the pressure loss is controlled, and the life of the removal function of harmful substances and the dust removal function is almost at the same time, so the function of the filter for deodorization and gas removal can be fully utilized for a long time.
(8) By laminating the catalyst at the same time as the ultrafine fiber layer, a laminated filter medium can be produced by an easy means, and a low-cost deodorizing / gas removing filter can be provided.
(9) The catalyst can be securely fixed to the deodorizing / gas removing filter, and re-scattering into clean air can be prevented.
(10) The conventional granular gas adsorbent has a large particle size and there is a limit to pleating processing. By using this deodorizing / gas removing filter, pleating is performed from the prefilter to the medium performance filter, HEPA filter, and ULPA filter. be able to.

Schematic which shows the laminated filter medium of the filter for deodorizing and gas removal of this invention. Schematic which shows another form of the laminated filter medium of the filter for deodorizing and gas removal of this invention. Schematic which shows another form of the laminated filter medium of the filter for deodorizing and gas removal of this invention. Schematic which shows another form of the laminated filter medium of the filter for deodorizing and gas removal of this invention. Schematic which shows another form of the laminated filter medium of the filter for deodorizing and gas removal of this invention. Schematic which shows the filter for pleat type deodorizing and gas removal of this invention. Schematic which shows the panel type deodorizing and gas removal filter of this invention.

Hereinafter, the shape of the deodorizing / gas removing filter using the multilayer filter medium of the deodorizing / gas removing filter will be described with reference to FIGS.

FIG. 1 shows a laminated filter medium for a deodorizing / gas removing filter having a structure in which fine activated carbon 2 is sandwiched between non-woven fabrics or woven fabrics 1, 1 'made of synthetic fiber, glass fiber, natural fiber or the like. When the gas to be treated is passed through the multilayer filter medium 3, the solid particles in the gas to be treated are removed by the nonwoven fabric or woven fabric 1 having the dust removal performance, and the fine activated carbon 2 having the gas removal performance is removed. The gas component in the gas to be treated is removed. At this time, the primary side nonwoven fabric or woven fabric 1 through which the gas to be treated passes has a prefilter function to collect relatively large dust in the gas to be treated, and the secondary side nonwoven fabric or woven fabric 1 '. Further, by collecting the relatively small dust in the gas to be treated by providing the medium-high performance, HEPA, and ULPA filter functions, clogging of the laminated filter medium can be prevented and the life can be extended.

FIG. 2 shows another form of a laminated filter medium for deodorizing / gas removing filters, in which a super-fine fiber layer 5 is laminated by attaching a binder 4 to a nonwoven fabric or woven fabric 1 'made of synthetic fiber, glass fiber, natural fiber or the like. Thus, it has a function of medium-high performance, HEPA, ULPA filter, and has a structure in which fine activated carbon 2 is sandwiched between another synthetic fiber or a nonwoven fabric or woven fabric 1 made of glass fiber, natural fiber or the like. When the gas to be treated is passed through the multilayer filter medium 3, relatively small dust in the gas to be treated is removed while maintaining a low pressure loss in the ultrafine fiber layer 5, and the fine activated carbon 2 having gas removal performance is provided. The gas component in the gas to be treated is removed by. At this time, when the fine activated carbon 2 is sandwiched between the nonwoven fabric or the woven fabrics 1 and 1 ′, and the superfine fiber layer 5 is laminated by attaching the binder 4, the organic solvent contained in the raw material of the superfine fiber is vaporized, Since it is adsorbed by fine activated carbon and the deodorization / gas removal performance is greatly reduced, a superfine fiber layer 5 is laminated on a nonwoven fabric or woven fabric 1 'in advance by attaching a binder 4, and another synthetic fiber or glass fiber or It is desirable to have a structure in which fine activated carbon 2 is sandwiched between a nonwoven fabric or a woven fabric 1 made of natural fibers or the like.

FIG. 3 shows another form of a laminated filter medium for a deodorizing / gas removing filter, in which a superfine fiber layer 5 is laminated by attaching a binder 4 to a non-woven fabric or woven base material 6 to obtain synthetic fiber or glass fiber or natural fiber. A fine activated carbon 2 is sandwiched between a nonwoven fabric or a woven fabric 1 'made of fibers. When the gas to be treated is passed through the laminated filter medium 3, solid particles in the gas to be treated are removed while maintaining a low pressure loss in the ultrafine fiber layer 5, and the fine activated carbon 2 having gas removal performance is used. The gas component in the gas to be treated is removed.

FIG. 4 shows another form of the laminated filter medium of the deodorizing / gas removing filter, which has a structure in which the ultrafine fiber layer 5 described in FIG. When the gas to be treated is passed through the laminated filter medium 3, solid particles in the gas to be treated are removed while maintaining a low pressure loss in the ultrafine fiber layer 5, and the fine activated carbon 2 having gas removal performance is used. The gas component in the gas to be treated is removed, the gas component flowing in by the catalyst 7 is decomposed, and the concentration of the gas flowing out can be lowered.

FIG. 5 shows another form of the laminated filter medium of the filter for deodorizing and removing gas, and a structure in which the catalyst 7 is fixed to the surface of the non-woven fabric or woven base material 6 of the laminated filter medium 3 described in FIG. It has become. When the gas to be treated is passed through the laminated filter medium 3, solid particles in the gas to be treated are removed while maintaining a low pressure loss in the ultrafine fiber layer 5, and the fine activated carbon 2 having gas removal performance is used. The gas component in the gas to be treated is removed, the gas component flowing in by the catalyst 7 is decomposed, and the concentration of the gas flowing out can be lowered.

FIG. 6 shows that the laminated filter medium 3 for deodorization and gas removal is folded in a pleated shape in the outer frame 8, and a corrugated separator 9 is sandwiched between the laminated filter medium 3, and the inner surface of the laminated filter medium 3 and the outer frame 8. Is a filter 10 for deodorizing and removing gas, which is integrated with a sealing material to provide airtightness. By folding into a pleated shape, the amount of air flow to be treated can be increased, and the filter performance can be maintained for a long period of time while maintaining a compact shape.

FIG. 7 shows the laminated filter medium 3 for deodorization and gas removal, cut into a panel shape, joined and folded in a zigzag manner in the outer frame 8, and the laminated filter medium 3 and the inner peripheral surface of the outer frame 8 are sealed. The deodorizing / gas removing filter 10 is integrated with airtightness. As an advantage of folding in a zigzag shape, the performance of the filter can be maintained for a long time in a compact shape without damaging the ultrafine fiber layer by pleating or the like.

Next, specific examples will be described.

Example 1
Fiber containing a titanium dioxide-based catalyst having an acrylic binder on the surface of a synthetic fiber nonwoven fabric having a fiber diameter of 0.3 to 50 μm and a thickness of about 0.4 mm, and having a size of about 0.05 mm A laminated filter medium in which a thin layer of ultra-fine fibers having a diameter of 0.05 to 0.2 μm is stacked and fixed by drying, and a fine activated carbon having a basis weight of about 600 g / m 2 is sandwiched together with another synthetic fiber non-woven fabric. Created.

(Example 2)
A thin layer of ultra-fine fibers having a fiber diameter of 0.05 to 0.2 μm is stacked on a thin synthetic fiber nonwoven fabric substrate having a fiber diameter of 0.3 to 50 μm and a thickness of about 0.2 mm, and the fiber diameter is fixed. A fine activated carbon with a basis weight of about 600 g / m 2 is sandwiched between synthetic fiber nonwoven fabrics of 0.3 to 50 μm and a thickness of about 0.4 mm, and each is superposed and fixed integrally, and the surface of the thin synthetic fiber nonwoven fabric is made of acrylic. A laminated filter medium in which a binder was attached and a titanium dioxide catalyst having a size of about 0.05 mm was laminated thereon and integrated was prepared.

(Comparative Example 1)
For comparison, a laminated activated carbon filter medium in which activated carbon having a basis weight of about 600 g / m 2 was sandwiched between synthetic fiber nonwoven fabrics having a fiber diameter of 0.3 to 50 μm and a thickness of about 0.4 mm was prepared.

(Comparative Example 2)
For comparison, a glass fiber HEPA filter medium having a fiber diameter of 0.3 to 50 μm and a thickness of about 0.4 mm was prepared.

When the above was mounted on a test duct and tested, the following results were obtained.

Test conditions Filtration wind speed 5.3cm / sec
Temperature condition 25 ℃
Humidity condition 65%
Test dust Air dust
Test gas Ammonia 100-200ppb
Test measurement equipment Particle counter, gas analyzer

Test results are shown in Table 1.

In this embodiment, one embodiment of the present invention has been described. The present invention is not limited to this embodiment, and the gist of the present invention is not changed at all by various modifications.

In the industry dealing with air conditioning filters, filters having low pressure loss, high collection efficiency, and long life performance have been conventionally demanded. However, these performances have contradictory performances, making it difficult to create an ideal one. Therefore, the development of air conditioning filters having ideal performance in the filter industry has been attracting attention in recent years due to the development of ultra-fine fibers and the like due to technological development in the textile industry. Therefore, the present invention solves these problems, and it is a filter medium having a high-efficiency and long-life performance with low pressure loss, demonstrating the effect of ultra-fine fibers, and for deodorization and gas removal with a gas removal function. The present invention is intended to provide a filter, and the present invention is extremely useful in industry.

DESCRIPTION OF SYMBOLS 1 ... Nonwoven fabric or woven fabric 2 ... Fine activated carbon 3 ... Laminated filter media 4 ... Binder 5 ... Super fine fiber layer 6 ... Nonwoven fabric or woven fabric substrate 7 ... Catalyst 8 ... Outer frame 9 ... Separator 10 ... Filter for deodorization and gas removal

Claims (7)

Deodorization and gas removal characterized by using a laminated filter medium that has both a deodorization and gas removal function and a dust removal function by providing a non-woven fabric or woven fabric with fine activated carbon sandwiched between it and a deodorizing function. Filter. Use a layered filter media that has both a deodorizing and gas removing function and a dust removing function by laminating super fine fibers on the surface of a nonwoven fabric or woven fabric sandwiched with fine activated carbon to give it a dust removing function. The deodorizing / gas removing filter according to claim 1. Non-woven fabric or woven fabric with ultrafine fibers laminated to have a dust removal function Stacked and integrated with a nonwoven fabric or woven fabric with fine activated carbon sandwiched between them, has both a deodorizing and gas removal function and a dust removal function. 2. The deodorizing / gas removing filter according to claim 1, wherein the laminated filter medium is used. Super fine fibers fixed with a catalyst that has the effect of improving deodorization and gas removal performance are laminated on the surface of nonwoven fabric or woven fabric sandwiched with fine activated carbon to have both deodorization and gas removal functions and dust removal functions. 2. The deodorizing / gas removing filter according to claim 1, wherein a laminated filter medium is used. A catalyst that has the effect of improving the deodorization and gas removal performance by laminating and integrating with the nonwoven fabric or woven fabric in which fine activated carbon is sandwiched between the nonwoven fabric or woven fabric base material that has the function of removing dust by laminating ultrafine fibers. 2. The deodorizing / gas removing filter according to claim 1, wherein a laminated filter medium fixed on the surface of the ultrafine fiber or the substrate and having both a deodorizing / gas removing function and a dust removing function is used. . 6. A deodorizing / gas removing filter, wherein the laminated filter medium according to claim 1 is woven into a pleated shape. 6. A deodorizing / gas removing filter, wherein the laminated filter media according to claim 1 are arranged in a zigzag shape.

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