JP2000070645A - Filter for deodorization - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter for deodorization which exhibits small pressure loss, thin thickness and good adhesiveness with a filter for air cleaning, etc., and can prevents air from leaking. SOLUTION: A filter for deodorization which exhibits small pressure loss, thin thickness and good adhesiveness with a filter for air cleaning, etc., and can prevents air from leaking is obtd. by a method wherein an active carbon sheet 3 formed by sticking active carbon 1 on one face of a net with a shape on which the active carbon 1 for deodorization can be stuck through an adhesive is covered with a nonwoven fabric cover 4 and the opposite side 5 of the stuck active carbon side of the active carbon sheet 3 is formed into a flat shape with less unevenness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a deodorizing filter for deodorizing air purified by an air purifying filter or the like.

[0002]

2. Description of the Related Art Hitherto, filters of this type shown in FIGS. 9 to 13 have been known. Hereinafter, the configuration will be described with reference to FIGS.

[0003] As shown in FIG. 9, the inside is partitioned into a lattice shape, and particulate activated carbon 102 for deodorization is placed in a lattice portion 101.
To prevent the activated carbon 102 from spilling. However, it is difficult to provide the activated carbon 102 in a large number of lattice-shaped portions 101 on an average basis. Activated carbon 102 descends to form a space 104 in the lattice-like portion 101,
The air passed without contacting the activated carbon 102 to reduce the deodorizing effect.

Therefore, in order to perform deodorization on average, FIG.
And the one shown in FIG. 11 has been developed.

As shown in the figure, an adhesive is applied to a net 202 having a shape to which particulate activated carbon 201 for deodorization can be attached, and the activated carbon 201 is attached to both sides of the net 202. Then, the net 202 is covered with a nonwoven fabric cover 203 and deodorized. Filter 204
Had formed.

When combined with the air purifying filter 205, the surface of the deodorizing filter 204 is uneven due to the activity 201, so that the adhesion to the air purifying filter 205 deteriorates. A frame 206 is provided around the periphery 204 to prevent air leakage.

Further, as shown in FIG. 12, when incorporated in the main body of an air purifier or an air conditioner, the suction port 2 of the main body is used.
In the filter mounting portion 208 provided on the front side of the filter 07, the periphery is surrounded by a nonwoven fabric frame 209 or the like, an air cleaning filter 205 is provided on the windward side, and a deodorizing filter 203 is provided on the leeward side of the air cleaning filter 205. I was attached.

[0008] However, when the filter is attached to the filter attaching section 208 in this manner, the deodorizing filter 20 is not used.
3 is not flat, the deodorizing filter 203 is used.
A gap is generated between the filter and the filter mounting portion 208, and a leak A that does not pass through the air cleaning filter 205 and the deodorizing filter 203 occurs, and the air is not purified and the suction port 20 is not cleaned.
7, the amount of air to be taken in was generated, and the purification efficiency was reduced.

Therefore, as shown in FIG. 13, it has been considered to receive the deodorizing filter 203 through the seal member 209 in the filter mounting portion 208 to prevent the occurrence of the leak B.

[0010] Also, a filter described in Japanese Patent Application Laid-Open No. 9-271616 is known. This deodorizing filter comprises a single fibrous sheet containing activated carbon and an active inorganic adsorbent. The function of the activated carbon and the adsorbent is sufficiently exhibited by the presence of the porous sheet.

Further, in order to remove different types of odors, some types of activated carbon blended and used for each odor are blended and used, thereby simplifying the filter configuration and facilitating the handling.

[0012] In addition, there has been developed one in which activated carbon of different types is laminated in multiple layers with respect to various types of odors to improve the deodorizing function.

[0013]

In such a conventional deodorizing filter, activated carbon 201 is provided on both sides of net 202.
Therefore, there is a problem that air permeability is poor and pressure loss is large, and it is required to reduce pressure loss.

Further, since the contact surface with the air cleaning filter 205 is uneven, adhesion is poor, and there is a problem that a frame member 206 must be provided to prevent air leakage. It is required to increase the adhesion to the filter 205 to prevent air leakage.

Further, when the filter is mounted on the filter mounting portion 208 provided at the suction port 207 of the main body of the air purifier or the air conditioner, it is necessary to provide another member such as a seal member 209 in order to prevent a leak. However, there is a problem in that the number of parts increases and the cost increases, and it is required to prevent the occurrence of leaks without trouble.

Further, in the case where a single fibrous sheet contains activated carbon and an active inorganic adsorbent, the deodorizing performance is limited because only the adsorption function is used. Is required to be further improved.

In the case where different types of activated carbon are blended with two or three different odors, the contact efficiency of the activated carbon with respect to the target odor is not increased even if the total amount of activated carbon used is the same. However, there is a problem that the total deodorization performance including the deodorization life is reduced, and the deodorization performance is not reduced.
It is required that several types of odors can be efficiently treated.

Further, with respect to various kinds of odors, the deodorizing function can be improved by fixing and laminating various kinds of activated carbon on the fibrous sheet, but the air resistance is increased and the air volume is reduced. There is a problem that the function cannot be sufficiently exhibited, and there is a demand for a deodorizing filter which removes various odors and reduces air resistance so as not to reduce the air volume.

The present invention solves such a conventional problem, and has a small pressure loss, a small thickness, good adhesion to an air purifier or the like, and prevents the occurrence of a leak when incorporated into a device. The present invention provides a deodorizing filter that can stably install different types of activated carbon that have been chemically treated, and that can form multiple layers of different types of activated carbon and reduce the air resistance of the multi-layered activated carbon. The purpose is to do.

[0020]

In order to achieve the above-mentioned object, a deodorizing filter of the present invention has a particulate activated carbon for deodorizing, a net having a shape to which the activated carbon for deodorizing can be attached, and a filter attached to one side of the net. An activated carbon sheet formed by adhering the activated carbon for deodorization via an agent, and a non-woven fabric cover covering the activated carbon sheet are provided, and the side of the activated carbon sheet to which the activated carbon is adhered is formed in a flat shape with few irregularities.

According to the present invention, a deodorizing filter having a small pressure loss, a small thickness, and a good adhesion to an air cleaning filter or the like can be obtained.

Further, another means includes an activated carbon sheet having an acidic activated carbon and an alkaline activated carbon adhered to the front and back surfaces of the net, respectively, and a non-woven fabric cover covering the activated carbon sheet, wherein the activated carbon sheet deodorizes different kinds of odors. It was done.

According to the present invention, a deodorizing filter capable of stably installing different kinds of chemically treated activated carbon can be obtained.

Another means is to form a multi-layer of an activated carbon sheet having activated carbon attached to one side of a net or an activated carbon sheet having acidic activated carbon or alkaline activated carbon attached to the front and back surfaces of the net, or a nonwoven fabric cover. It is configured to be covered with.

According to the present invention, a deodorizing filter capable of forming a multilayer of different types of activated carbon is obtained.

Another means is that the mesh of the net of the activated carbon sheet on the lee side of the activated carbon sheet to be multilayered is formed coarser than the mesh of the net of the activated carbon sheet on the lee side.

According to the present invention, a deodorizing filter capable of reducing the air resistance of activated carbon to be multilayered can be obtained.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, activated carbon for deodorization in the form of particles, a net having a shape to which the activated carbon for deodorization can be attached, and the activated carbon for deodorization attached to one surface of the net via an adhesive are formed. An activated carbon sheet and a non-woven fabric cover covering the activated carbon sheet are provided.The activated carbon sheet is formed with a flat surface with less irregularities on the side opposite to the activated carbon to serve as a deodorizing filter. By contacting the less flat side to the air cleaning filter side, the adhesion is improved, and it can be directly incorporated into the device without air leakage without the need for a frame, and the thin type reduces pressure loss. It has the effect that it can be reduced.

An activated carbon sheet having an acidic activated carbon and an alkaline activated carbon adhered to the front and back surfaces of the net, respectively;
A nonwoven fabric cover that covers the activated carbon sheet, wherein the activated carbon sheet is configured to deodorize different types of odors.Alkaline odor components such as ammonia gas contained in the air are adsorbed on the activated carbon of the acidic component and are contained in the activated carbon. At the same time, acidic odor components such as acetic acid contained in the air are adsorbed and neutralized by the activated carbon, which is an alkaline component, and have the effect of removing both chemically different types of odor components.

Further, the activated carbon sheet having activated carbon attached to one side of the net or the activated carbon sheet having acidic activated carbon or alkaline activated carbon attached to the front and back surfaces of the net is formed by multilayering and covering with a nonwoven fabric cover. It has the effect that various odors can be deodorized over a wide range with a long service life.

The mesh of the net of the activated carbon sheet on the leeward side of the multi-layered activated carbon sheet is formed coarser than the mesh of the net of the activated carbon sheet on the leeward side. It can be treated, the activated carbon sheet on the windward side has less activated carbon adhesion,
This has the effect of alleviating the overall pressure loss when a multilayer is formed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0033]

(Embodiment 1) As shown in FIGS. 1 and 2,
Net 2 of a shape to which activated carbon 1 for particulate deodorization can be attached
The activated carbon sheet 3 is formed by applying an adhesive to one surface of the activated carbon sheet 1 to form an activated carbon sheet 3, and the activated carbon sheet 3 is covered with a nonwoven fabric cover 4. The deodorizing filter 6 is constituted.

When the deodorizing filter 6 is combined with the air purifying filter 7 in the above configuration, the surface of the side 5 on which the activated carbon 1 is not adhered to the deactivated carbon adhering side 5 is opposed to the filter 7 for air purifying.

As shown in FIG. 3, when incorporated in the main body of an air purifier or an air conditioner, the periphery is surrounded by a nonwoven fabric frame 10 or the like in a filter mounting portion 9 provided on the upstream side of the suction port 8 of the main body. An air purifying filter 7 is provided on the leeward side, and a deflation filter 6 is disposed on the leeward side of the air purifying filter 7 such that the flat portion side of the deactivated filter 6 on the reactive carbon adhering side 5 is on the leeward side. Attach closely to the part.

According to the deodorizing filter of Embodiment 1 of the present invention, the activated carbon 1 is provided on one side of the net 2 so that the deodorizing filter 6 can be formed in a thin shape. The pressure loss can be reduced compared to the state in which the air permeability deteriorates due to polymerization and the pressure loss is increased, and the reduction in the ventilation volume is reduced when incorporated in an air purifier or air conditioner. , Normal operation can be performed while maintaining the function.

Further, since one side of the deodorizing filter is formed of a flat surface with little unevenness, the adhesiveness is improved when the filter is combined with the air purifying filter 7, so that air leakage can be achieved without providing a frame as in the conventional case. Is prevented from occurring
It can be directly incorporated into air purifier and air conditioner equipment.

Further, when the filter is attached to the filter attachment portion 9 provided in the suction port 8 of the device, the good adhesion of the deodorizing filter 6 prevents the occurrence of leaks and reduces the number of separate members such as sealing materials. Can be.

(Embodiment 2) As shown in FIG.
Activated carbon 11 of an acidic component impregnated with cupric chloride or copper sulfate to remove ammonia on one side is attached via an adhesive, and sodium hydroxide or thiosulfate is used to remove acetic acid on the other side. Activated carbon 12 of an alkaline component impregnated with sodium is attached via an adhesive to form an activated carbon sheet 13, which is covered with a nonwoven fabric cover 14 to form a deodorizing filter 15.

In the above configuration, when used in combination with an air purifying filter (not shown), the activated carbon 11 provided on one side of the activated carbon sheet 13 contains ammonia gas contained in air purified by the air purifying filter. Thus, the acetic acid gas contained in the air is adsorbed and neutralized by the activated carbon 12 provided on the other side of the activated carbon sheet 13.

The activated carbon is impregnated with an amine such as dimethylamine or trimethylamine, and an acidic activated carbon 16 impregnated with sodium thiosulfate is adhered to one surface of the net 2 with an adhesive to adsorb and remove tobacco odor. ,
An alkaline activated carbon 17 impregnated with an amine such as dimethylamine or trimethylamine is adsorbed on one surface of the other surface with an amine such as dimethylamine or trimethylamine via an adhesive to form an activated carbon sheet 18 and is covered with a nonwoven fabric cover 19. The deodorizing filter 20 is formed.

In the above configuration, when used in combination with an air purifying filter, the tobacco odor contained in the air purified by the air purifying filter is adsorbed and absorbed by the acidic activated carbon 16 provided on one surface of the activated carbon sheet 18. The neutralized formaldehyde or No. 2 contained in the air is adsorbed and neutralized by the alkaline activated carbon 17.

The deodorizing filter 15 according to the second embodiment of the present invention.
According to and 20, the acidic and alkaline activated carbons 11 and 12 or 16 and 17 are combined and attached to each side of the net 2, so that in the case of the deodorizing filter 15, the ammonia contained in the air and Acetic acid can be removed, and in the case of the deodorizing filter 20, tobacco odor and formaldehyde or No. 2 can be removed, and the range of removing different gases having different odors can be expanded.

(Embodiment 3) As shown in FIG.
Activated carbon sheet 3A having activated carbon 1 adhered to one side thereof is combined into a multilayer, and covered with nonwoven fabric cover 21 to form deodorizing filter 22.

In the above configuration, when the odor in the air purified by combining with an air purifying filter (not shown) is deodorized, the activated carbon sheet 3A is combined with the activated carbon sheet 3A to form a single layer. The deodorizing performance is improved as compared with the case where the nonwoven fabric cover is used, and the amount of the nonwoven fabric cover 21 used can be reduced as compared with the case where the deodorizing filter formed by the activated carbon sheet 3A is used in combination.

As shown in FIG. 6, an activated carbon sheet 13A to which activated carbon 11 and activated carbon 12 are attached is combined to form a multilayer, or an activated carbon sheet 13A is combined to activated carbon 16 and activated carbon sheet 18A to which activated carbon 17 is attached, to form a multilayer. Then, the filter is covered with a nonwoven fabric cover 23 to form a deodorizing filter 24.

In the above configuration, when used in combination with an air purifying filter, by combining activated carbon having different functions to form a multilayer, the deodorizing performance of various odors can be improved.

As shown in FIG. 7, the activated carbon sheet 1
3B or the activated carbon sheet 18B and the activated carbon sheet 3B are combined to form a multilayer, and the non-woven fabric cover 25 forms the deodorizing filter 26.

In the above configuration, when used in combination with an air purifying filter, the function of the activated carbon sheet 3B is added to the function of the activated carbon sheet 3B or the activated carbon sheet 18B, and the deodorizing performance is improved while the deodorizing function is enhanced. Become.

According to the deodorizing filter of the third embodiment of the present invention, activated carbon sheets 3B, 13B, 18B having different functions.
, The deodorizing function and the deodorizing life can be extended, and the nonwoven fabric cover 2
1, 23, and 25 can be used less.

(Embodiment 4) As shown in FIG. 8, an activated carbon sheet 29 in which activated carbon 28 for deodorization is adhered to a net 27 having a coarse mesh, and a net 3 made of a normal mesh
0 is formed with an activated carbon sheet 32 to which activated carbon 31 for deodorization is attached, and is covered with a nonwoven fabric cover 33 so that the activated carbon sheet 29 is disposed on the windward side.
4 is formed.

In the above configuration, when combined with an air purifying filter (not shown), the activated carbon sheet 29 disposed on the windward side is opposed to the air purifying filter, and the air purified by the air purifying filter is removed. Deodorization is performed through the activated carbon sheet 29 of the deodorizing filter 34. At this time, since the net 27 forming the activated carbon sheet 29 is formed coarsely, the amount of the activated carbon 28 attached thereto is small, air easily passes therethrough, and pressure loss is reduced. It is introduced and deodorized by the activated carbon sheet 32.

The deodorizing filter 34 according to the fourth embodiment of the present invention.
According to the method described above, the mesh of the net 27 of the activated carbon sheet 29 disposed on the windward side is formed roughly, so that the activated carbon 28
And the pressure loss is reduced, the overall pressure loss in a multilayer structure is alleviated, and the activated carbon function of the activated carbon sheet 32 provided on the leeward side can be sufficiently exhibited. Can be improved.

[0054]

As is clear from the above embodiments, according to the present invention, a net having a shape to which particulate activated carbon for deodorization can be attached, and the activated carbon for deodorization attached to one surface of this net via an adhesive. Since the formed activated carbon sheet and a non-woven fabric cover covering the activated carbon sheet were provided, and the side of the activated carbon sheet on which the non-activated carbon was attached was formed in a flat shape with less unevenness,
It is possible to provide a deodorizing filter capable of reducing the thickness of the deodorizing filter, reducing pressure loss, and preventing air leakage when combined with an air purifying filter.

An activated carbon sheet having an acidic activated carbon and an alkaline activated carbon adhered to the front and back of the net, respectively;
Since a nonwoven fabric cover is provided to cover the activated carbon sheet, and the activated carbon sheet is configured to deodorize different types of odors, the range of removing different types of gases having different odors can be expanded.

The activated carbon sheet having activated carbon attached to one side of the net, the activated carbon sheet having acidic activated carbon or alkaline activated carbon attached to the front and back of the net, or both activated carbon sheets are multi-layered and covered with a nonwoven fabric cover. With this configuration, the deodorizing function and the deodorizing life can be extended, and the amount of the nonwoven fabric cover used can be reduced.

Further, since the mesh of the net of the activated carbon sheet on the leeward side of the activated carbon sheet to be multilayered is formed coarser than the mesh of the net of the activated carbon sheet on the leeward side, the pressure loss of the activated carbon sheet provided on the leeward side is reduced. In addition, the pressure loss of the entire deodorizing filter can be reduced, and the activated carbon sheet provided on the leeward side can sufficiently exhibit the activated carbon function, thereby improving the deodorizing efficiency.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a deodorizing filter according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged view showing a state in which the deodorizing filter is combined with an air purifying filter.

FIG. 3 is a partial cross-sectional view showing a state in which the deodorizing filter and an air cleaning filter are attached to a device.

FIG. 4 is a cross-sectional view illustrating a configuration of a deodorizing filter according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating a configuration of a deodorizing filter according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing the same type of deodorizing filter or a combination of activated carbon sheets of acid and alkali.

FIG. 7 is a cross-sectional view showing another configuration of the deodorizing filter in which an acid and alkali activated carbon sheet is combined.

FIG. 8 is a cross-sectional view illustrating a configuration of a deodorizing filter according to a fourth embodiment of the present invention.

FIG. 9 is a partially enlarged front view showing the configuration of a conventional deodorizing filter.

FIG. 10 is a sectional view showing another configuration of the deodorizing filter.

FIG. 11 is a partially enlarged view showing a state in which the deodorizing filter is combined with an air cleaning filter.

FIG. 12 is a partial cross-sectional view showing a state in which the deodorizing filter is attached to an air cleaning filter and a device.

FIG. 13 is a partial cross-sectional view showing another example of a state where the deodorizing filter is attached to an air cleaning filter and a device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Activated carbon 2 Net 3 Activated carbon sheet 3A Activated carbon sheet 3B Activated carbon sheet 4 Nonwoven fabric cover 5 Anti-activated carbon attachment side 6 Deodorizing filter 11 Activated carbon (acid activated carbon) 12 Activated carbon (Alkaline activated carbon) 13 Activated carbon sheet 13A Activated carbon sheet 13B Activated carbon sheet 14 Nonwoven fabric cover 16 Activated carbon (acid activated carbon) 17 Activated carbon (alkaline activated carbon) 18 Activated carbon sheet 18A Activated carbon sheet 18B Activated carbon sheet 19 Nonwoven fabric cover 21 Nonwoven fabric cover 23 Nonwoven fabric cover 25 Nonwoven fabric cover 27 Net 29 Activated carbon sheet 32 Activated carbon sheet

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C080 AA05 BB02 CC01 CC02 CC07 CC12 HH09 JJ05 JJ06 KK08 LL03 MM02 MM18 NN05 QQ03 4D012 BA03 CA09 CB03 CG02 CG06 CK07

Claims (4)

[Claims] 1. A particulate activated carbon for deodorization, a net having a shape to which the activated carbon for deodorization can be attached, an activated carbon sheet formed by attaching the activated carbon for deodorization to one side of the net via an adhesive, and an activated carbon sheet A deodorizing filter, comprising: a nonwoven fabric cover for covering the sheet; wherein the side of the activated carbon sheet to which the activated carbon is attached is formed into a flat shape with a small amount of unevenness. 2. A deodorizing filter comprising: an activated carbon sheet having an acidic activated carbon and an alkaline activated carbon adhered to the front and rear surfaces of a net; and a non-woven fabric cover covering the activated carbon sheet, wherein the activated carbon sheet is configured to deodorize different types of odors. . 3. An activated carbon sheet having activated carbon adhered to one side of a net or an activated carbon sheet having acidic activated carbon or alkaline activated carbon adhered to both sides of the net, or both activated carbon sheets are multi-layered and covered with a nonwoven fabric cover. Deodorizing filter. 4. The deodorizing filter according to claim 3, wherein the mesh of the net of the activated carbon sheet on the leeward side of the activated carbon sheet to be multilayered is formed coarser than the mesh of the net of the activated carbon sheet on the leeward side.