JP3792774B2 - Allergy filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an allergy countermeasure filter that collects allergens such as cedar pollen and house dust, and further removes nitrogen dioxide and DEP that enhance the production of allergic antibodies.
[0002]
[Prior art]
The relationship between allergies and air pollution has been attracting attention for a long time, and the Ministry of Health and Welfare is conducting measurements of air pollutants and investigating the incidence of allergies in various places. In particular, the relationship between NO ↓ 2 concentration in the atmosphere and health condition is attracting attention. The relationship between NO ↓ 2 concentration and asthma, rhinitis, pollen allergy, etc. There are reports that the prevalence of allergic predisposition is high. In particular, the correlation between NO ↓ 2 and hay fever is becoming clear from studies using rats, and the production of specific IgE, an allergic antibody to hay fever, is exposed to NO ↓ 2. There is a report that it increases. In addition, recent research has revealed that diesel engine emissions (DEP) are closely related to allergies. Dust collection filters and gas adsorption filters are being developed and put to practical use. However, as an allergy countermeasure that focuses on the incentives such as NO ↓ 2, DEP, etc. Not.
[0003]
The removal agent that removes NO ↓ 2 includes polyamine as an active ingredient, adsorbent impregnated with polyamine on a carrier or adsorbent in the form of ion exchange resin, activated carbon with polyamine, alkali metal, alkaline earth metal And the like with a salt or oxide added thereto.
[0004]
[Problems to be solved by the invention]
Such a conventional dust collecting filter can remove allergens such as Japanese cedar pollen, which directly cause hay fever, but cannot remove NO ↓ 2 that enhances the production of allergic antibodies. NO ↓ 2 is because people are exposed for a long time in a high concentration state due to the inflow of outside air pollutant gas and indoor sources (open combustion equipment etc.), both are removed at the same time to cope with allergies Is required to do.
[0005]
In addition, the conventional method using a dust collection filter that removes allergen and a NO ↓ 2 removal filter in two layers increases the thickness of the filter, resulting in a large unit and a large pressure loss, which places more load on the air conditioner. Therefore, it is required to reduce the pressure loss of the filter.
[0006]
Conventionally, there are filters in which granular or powdery NO ↓ 2 remover is supported on a porous substrate such as polyurethane. All of these filters are used when holding the filter or installing it in an air cleaner or air conditioner. The carried NO ↓ 2 removal agent is easily detached from the substrate. There is a demand for a filter in which the NO ↓ 2 removal agent does not easily desorb from the substrate. In addition, when carrying | supporting adsorption agent on a porous base material, there exists a problem that it will not have the dust collection performance as a filter, and improvement is requested | required.
[0007]
Further, if the NO ↓ 2 removal agent is covered with dust or dust in the air, there is a problem that the NO ↓ 2 removal performance is rapidly deteriorated, and a filter that prevents rapid deterioration is required. .
[0008]
In addition, when using normal granular or powdered activated carbon, there is a limit to the adsorption capacity, and in order to improve the adsorption performance, the weight of activated carbon must be increased, the thickness of the filter is increased, and the pressure loss is also increased. There is a problem of becoming higher. In addition, when the particulate NO ↓ 2 remover is directly attached to the dust collecting filter, there is a problem that the dust collecting performance is lowered, and it must be used in combination with the dust collecting filter. In the case of a normal activated carbon fiber filter, there is a problem that the fiber has a dense structure, high pressure loss, and there are some that cannot be used depending on the air conditioner, pressure loss is low, and adsorption capacity per unit volume of the filter And a filter having a dust collection performance is required.
[0009]
Diesel engine exhaust (DEP), which is an air pollutant, is further cited as another substance that makes other allergic reactions hypersensitive, but DEP with a small particle size is not suitable for coarse dust filters used in conventional ventilation fans. There is a problem that it flows into the room without being removed by the filter, and the person is exposed at a high concentration. In order to deal with allergies, a filter that simultaneously collects DEP is required.
[0010]
This invention solves such a conventional subject, and it aims at providing the filter for allergy which can remove allergens, such as a cedar pollen, and NO ↓ 2 which causes allergy onset simultaneously. .
[0011]
In addition, the present invention provides high dust collection performance simultaneously with NO ↓ 2 removal in one layer by carrying a slurry-like NO ↓ 2 removal agent directly on the dust collection filter, low pressure loss, and NO ↓ 2. An object of the present invention is to provide a filter for allergy that prevents the removal agent from being detached from the substrate.
[0012]
In addition, the present invention provides a filter for allergies that prevents rapid deterioration of removal performance by supporting a slurry-like NO ↓ 2 removal agent only on one downstream side of the dust collection filter, and further reduces manufacturing costs. It is an object.
[0013]
Another object of the present invention is to provide a filter for allergy that has a lower pressure loss and a higher dust collection performance by making the NO ↓ 2 removal agent itself a dust collection filter.
[0014]
In addition, the present invention collects DEP related to allergy by stacking a dust collection filter with a different basis weight on the upstream side of the NO ↓ 2 removal filter according to the particle size of the dust to be collected. The purpose is to provide a corresponding filter.
[0015]
[Means for Solving the Problems]
One means of the allergic filter of the present invention for solving the above problem is that the dust collecting filter that collects allergens is loaded with the slurry NO ↓ 2 remover in multiple times, and allergen and NO ↓ 2 are supported. The structure is removed at the same time.
[0016]
Also, other means is a NO ↓ 2 removing agent only downstream side of the dust collecting filters were responsible lifting.
[0017]
The other means carries a slurry-like NO ↓ 2 remover.
[0018]
Also, other means is a dust collecting filter and non-woven fabric. Also, other means is obtained by the product layer the different dust collecting filter of basis weight.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention removes NO ↓ 2 from a slurry that adsorbs NO ↓ 2, which is said to increase the production of allergic antibodies, in a dust collection filter for collecting allergens such as cedar pollen. The agent is carried in a plurality of times, and the slurry develops a dense structure in the dust collecting filter to remove allergen and NO ↓ 2 at the same time. It has the effect of adsorbing NO ↓ 2 that enhances the production of allergic antibodies while removing allergens such as cedar pollen. In addition, the NO ↓ 2 removal agent in the form of a slurry is supported on the dust collection filter, and since the slurry is supported so as to have a dense structure, it has dust collection performance and the filter structure is a single layer. Therefore, the filter has a thin thickness and a pressure loss is reduced.
[0020]
The invention described in claim 2 is such that NO ↓ 2 removal agent is supported only on the downstream side of the dust collection filter for collecting allergens, and dust and dust in the processing gas are first trapped in the dust collection part on the upstream side. By removing the NO, the NO ↓ 2 removal agent can be prevented from rapidly degrading, and the production cost can be reduced .
[0021]
The invention according to claim 3 carries a slurry-like NO ↓ 2 removal agent, and the removal agent penetrates into the filter far more in the slurry state than in the particle state. Also, it has dust collection performance, and since the filter structure is a single layer, the pressure loss of the filter is low, and further, the removal of NO ↓ 2 removal agent from the base material can be prevented .
[0022]
The invention according to claim 4, the dust collecting filter is obtained by a nonwoven fabric, an effect that high dust collecting performance because the nonwoven fabric having a coarse-packed structure.
[0023]
The invention according to claim 5 is a dust collection filter having a different basis weight, a medium performance filter or a high performance filter laminated on the upstream side of the filter for removing NO ↓ 2, and DEP that is related to allergy is also removed at the same time. This single filter unit can handle not only the direct cause of allergies, but also typical air pollutants that are the incentives.
[0024]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0025]
( Reference Example 1)
FIG. 1 shows an allergy countermeasure filter comprising a dust collection filter according to Reference Example 1 and a NO ↓ 2 removal filter. For example, as shown in the figure, NO ↓ 2 removal filter 1 using NO ↓ 2 removal agent is covered with dust collection filter 2 that removes dust such as pollen, but NO ↓ 2 removal agent is wrapped in net 3 with rough eyes, Then wrap the outside with a dust collecting filter. The dust collection filter 2 and the net 3 are fixed with Velcro tape 4 so that the dust collection filter 2 can be easily and regularly cleaned. Alternatively, the dust collecting filter and the NO ↓ 2 removal filter may be bonded with a binder, or may be welded with a heat-welding sheet, or may be wrapped with a thin net with a rough eye. The dust collecting filter may be a non-woven fabric having a dust collecting performance, a charged non-woven fabric, or the like. In the above configuration, the dust collecting filter 2 and the NO ↓ 2 removal filter 1 that adsorbs NO ↓ 2 are integrated to form a cedar pollen or the like. In addition to removing allergens, the potential cause of hay fever is eradicated by removing NO ↓ 2 which causes hay fever. The NO ↓ 2 removal agent used in the NO ↓ 2 removal filter may be an adsorbent in the form of an adsorbent or ion exchange resin in which polyamine is impregnated as an active ingredient or polyamine. ), A mixture of activated carbon and titanium dioxide, an adsorbent in which an alkali metal salt, cement material and activated carbon are combined (Japanese Patent Publication No. 58-5699), an amino compound having a primary amine or a secondary amine in activated carbon, Adsorbent adsorbed with alkali metal or alkaline earth metal salt or hydroxide (JP-A-7-299326), other activated carbon, alumina, etc. that have been subjected to an impregnation treatment to increase reactivity, etc. NO ↓ 2 Any material that adsorbs can be used.
[0026]
(Embodiment 1)
FIG. 2 shows an allergy-resistant filter carrying a NO ↓ 2 removal agent directly slurryed on the dust collection filter according to the first embodiment. In the figure, NO ↓ 2 directly slurried on the substrate 5 which is a dust collection filter. A remover 6 is supported. Examples of substrates carrying adsorbents include various porous substrates such as polyurethane foam. Among them, non-woven fabrics with a coarse and dense structure that have a dust collection performance, not a particularly rough substrate with a low dust collection performance. Since the basis weight of the filter is large, the removal agent penetrates far into the filter when supported in a slurry state than when supported in a granular state. As a supporting method, first, a dust collecting filter such as a non-woven fabric serving as a base material is impregnated in a binder basket while feeding with a roller, and excess binder is squeezed with a roll. Next, a mixture of a small amount of binder dispersed in water and a mixture of NO ↓ 2 remover is poured between the base material and the roll while being impregnated into the base material by applying pressure with the roll and then dried. Let If the filter is thick, this step is performed from both sides in order to uniformly impregnate the filter. According to this method, since the amount of the binder directly covering the NO ↓ 2 removing agent is small, there is no problem that the surface of the removing agent is covered with the binder and the adsorption performance is deteriorated. In addition, the base material is impregnated in advance with the binder as well as in the slurry, so that the dispersibility in the base material is good, and since it is firmly supported on the base material, the removal agent is prevented from being detached from the base material. can do. Furthermore, since the slurry has a dense structure in the filter, there is almost no decrease in dust collection performance due to the adsorbent being supported . A small amount of crude dense structure in order to develop a plurality of times to carry. For example, when using an activated carbon base that has been subjected to surface treatment such as adhesion for adsorbing NO ↓ 2, the NO ↓ 2 removal agent is fine when preparing the NO ↓ 2 removal agent. There are a method in which powdered charcoal is subjected to an adhesion treatment and then mixed with a binder, and a method in which finely powdered coal, an additive and a binder are directly mixed and supported. There is no big difference in NO ↓ 2 adsorption performance with the former and the latter. In the latter case, for example, for an activated carbon compound with an amino compound having a primary amine or an amino compound having a secondary amine, or an alkali metal or alkaline earth metal salt or hydroxide, Since it is water-soluble and exhibits alkali, a water-dispersed binder is suitable, such as vinyl chloride and acrylic. The particle size of the removing agent is desirably smaller than 100 mesh, and in particular, about 200 to 300 mesh is most suitable in consideration of dispersibility and workability. The base material dust collection filter can be any non-woven fabric with a dust collection performance, non-woven fabric that has been charged to improve dust collection efficiency, polyurethane foam, etc. For collecting allergens and removing NO ↓ 2, it is necessary to use a certain amount of remover. Therefore, a non-woven filter for coarse dust is most suitable. The material is polyester, polypropylene, nylon. Various materials such as acrylic and polyethylene are applied. In the above configuration, it is possible to prevent the NO ↓ 2 removal agent from detaching and to remove allergens and NO ↓ 2 with a simple apparatus having high dust collection performance and low pressure loss. It becomes.
[0027]
(Embodiment 2 )
In FIG. 3, only one half of the base material 5 is loaded with the NO ↓ 2 removal agent 6 made into a slurry by the method described in the first embodiment. In this case, since the slurry supporting process is only required on one side, the manufacturing cost can be reduced. In the above configuration, by placing a NO ↓ 2 removal agent support layer downstream of the single dust collection filter, it is possible to remove dust and dust in the processing gas first at the upstream dust collection part. Thus, it is possible to obtain a filter that can prevent a rapid drop in the pressure, has a low pressure loss, is thin, and has a reduced manufacturing cost.
[0028]
(Embodiment 3 )
In FIG. 4, the allergic response filter which processed the NO ↓ 2 removal filter in Embodiment 3 into the nonwoven fabric shape was shown. In the manufacturing method of the non-woven fabric NO ↓ 2 removal filter 7, the carbon fiber is first processed into a thin non-woven fabric having a thickness of about 2 mm, and the laminated product is steam-activated to give a microporous structure. The specific surface area of the activated carbon fiber after activation can be adjusted to 700 to 2000 m <2> / g. However, in consideration of cost, chemical adhesion, filter strength, and performance, the vicinity of 1000 to 1500 m <2> / g is most suitable. Furthermore, in order to give NO ↓ 2 adsorption performance, the activated liquid is added to an activated solution with a volume of about 30 to 40% of the filter volume (amino compound having a primary amine or amino having a secondary amine). A compound, an alkali metal or alkaline earth metal salt or hydroxide, etc. is sprinkled and impregnated to perform surface treatment. Unlike the felt and sheet | seat by the conventional activated carbon fiber, since it has a close-packed structure, and since the pressure loss is low, since the thin nonwoven fabric layer of about 2 mm can be piled up, high dust collection performance is obtained. In the above structure, since the NO ↓ 2 removal filter 7 itself has a non-woven fabric-like structure, the dust collection performance is high and the adsorption capacity per unit volume is increased.
[0029]
(Embodiment 4 )
Although not shown in the figure, a dust collection filter for collecting allergens, or an allergy countermeasure filter described in Embodiment 2, 3 or 4 and a medium performance filter or a high performance filter for collecting DEP are laminated. It is a thing. Sugi pollen has a large particle size and is suitable for non-woven fabrics with a thickness of about 5 to 10 mm for coarse dust, so that allergens and dust in the atmosphere can be removed with a dust collection filter. Collect and collect DEP, which is said to be related to allergies, with a medium-performance filter or high-performance filter, and obtain a filter for allergy prevention that removes NO ↓ 2. It is particularly suitable as an air purification filter for air conditioning equipment such as an outside air intake type ventilation fan.
[0030]
【The invention's effect】
As described above, according to the present invention, not only the allergen is removed, but also the NO ↓ 2 that is attracting attention to the allergy is removed, so that there is an advantageous effect that the cause of the potential allergy can be removed. can get. Since the slurry is supported so as to have a coarse and dense structure, it also has dust collection performance. By supporting the NO ↓ 2 removal agent of the slurry on the dust collection filter in multiple times, the slurry is contained in the dust collection filter. A dense structure will be developed.
[0031]
Further, an advantageous effect that the allergen and NO ↓ 2 can be removed with a simple apparatus having a thin filter, low pressure loss, and high dust collection performance is obtained.
[0032]
Moreover, the NO ↓ 2 removal filter's surface and pores of the NO ↓ 2 removal filter are covered with dust and dust, thereby preventing the rapid deterioration of performance and reducing the manufacturing cost. .
[0033]
In addition, the pressure loss is low, the thickness is small, and the advantageous effect of having high dust collection performance and NO ↓ 2 removal performance with a single filter is obtained.
[0034]
In addition, DEP, which is said to be related to allergies, can be collected, and the production of allergens and allergic antibodies that flow into the living environment as outside air pollutant gas is increased, and even substances that are allergic to hypersensitivity are removed. The advantageous effect is obtained.
[Brief description of the drawings]
1 is a perspective view of an allergy countermeasure filter according to Reference Example 1. FIG. 2 is a sectional view of an allergy countermeasure filter according to Embodiment 1 of the present invention. FIG. 3 is a sectional view of an allergy countermeasure filter according to Embodiment 2 of the present invention. FIG. 4 is a cross-sectional view of an allergy countermeasure filter according to Embodiment 3 of the present invention.
1 NO ↓ 2 removal filter 2 Dust collection filter 3 Net 4 Velcro tape 5 Base material 6 Slurry NO ↓ 2 removal agent 7 Nonwoven fabric NO ↓ 2 removal filter

Claims (5)

An allergic filter, characterized in that the allergen and NO ↓ 2 (nitrogen dioxide) are removed simultaneously by carrying the slurry NO ↓ 2 remover in multiple times on the dust collection filter that collects allergens.   2. The allergic filter according to claim 1, wherein a NO ↓ 2 remover is carried only on the downstream side of the dust collecting filter.   The allergy countermeasure filter of Claim 1 or 2 which carry | supported the slurry-like NO ↓ 2 removal agent.   4. The allergic filter according to claim 1, 2 or 3, wherein the dust collecting filter is a non-woven fabric.   The allergy countermeasure filter according to claim 1, 2, 3, or 4, wherein dust collection filters having different basis weights are stacked.

Images