KR20200016011A - Combined filter for purifying air - Google Patents

Abstract

According to an embodiment of the present invention, an air purification composite filter comprises: a filter housing; an alkali metal purification material filter provided in the filter housing, and filled with an alkali metal purification material for converting oxide in introduced air into oxygen or reducing harmful gas in the air; and an adsorption filter provided in the filter housing, and filled with an adsorption material for adsorbing the harmful gas. According to the present invention, as the humidity decreases, the adsorption filter adsorbs the harmful gas, and the alkali metal purification material filter generates oxygen by an interactive exchange reaction of the oxide included in the air and the alkali metal purification material. Also, as the humidity increases, the adsorption filter discharges the adsorbed harmful gas, and the alkali metal purification material filter can remove the discharged harmful gas by a reaction with the alkali metal purification material.

Description

Combined filter for purifying air

An air purification composite filter is disclosed. More specifically, the combination of the alkali metal purification material filter having an alkali metal purification material and the adsorption filter having an adsorption material is combined, each filter reacts according to the humidity to remove the harmful gas as well as to generate oxygen An air purification composite filter, which can improve the efficiency of air purification, is disclosed.

A few years ago, the problem of fine dust was not so great, the fortress is a long day away and information about the fine dust is being poured, and the goods are being developed and used actively. For example, a fine dust mask different from the existing mask is developed and used separately. In addition, most households are equipped with an air cleaner.

About 90 percent of modern people live in confined spaces such as government offices, dense buildings, and buildings. Therefore, the air quality of the enclosed indoor space is very important. However, due to the insulation structure of the enclosed space, the air conditioner provided therein acts as an intake / exhaust system, but cannot control air quality. Also, due to yellow dust and fine dust, the window cannot be opened, concentrating harmful gases such as carbon dioxide, and thus, Indoor air is likely to get worse. The WHO, meanwhile, found that indoor pollutants are approximately 1000 times more likely to be delivered to the lungs than air pollutants. In addition, the WHO has announced a maximum of 6 million deaths per year due to indoor air pollution. In other words, keeping indoor air clean has become a hot topic in our time.

The problem of improving the quality of the indoor air is emerging, but the current product has its own limitations. For example, an air conditioner cools the air, an air purifier removes dust from the air, a humidifier provides moisture to the air, and a dehumidifier removes moisture from the air. Does not improve much. Removing dust in the room does not fundamentally improve the quality of the air.

In order to improve indoor air quality, it is essential to remove carbon dioxide and harmful gases in the air and to increase the amount of oxygen contained in the air. The quality of the air depends on the amount of oxygen. The dehumidifier for generating oxygen has been filed with the Republic of Korea Application No. 10-2015-0136206, but has a limited structure that can not remove the harmful gases such as carbon dioxide to generate oxygen.

Therefore, in order to fundamentally improve the quality of air, there is a need for the development of a new air purification composite filter capable of reducing harmful gas in the air and converting carbon dioxide into oxygen and supplying it.

Accordingly, an object according to an embodiment of the present invention is that the alkali metal purification material filter having an alkali metal purification material and the adsorption filter having an adsorption material are composed in combination, so that each filter reacts appropriately according to the humidity to generate harmful gas. It is to provide an air purification composite filter that can improve the efficiency of air purification by removing oxygen as well as generating oxygen.

Air purification composite filter according to an embodiment of the present invention, the filter housing; An alkali metal purification material filter provided in the filter housing and filled with an alkali metal purification material for converting an oxide in the air into oxygen or reducing a harmful gas in the air; And an adsorption filter provided in the filter housing and filled with an adsorption material for adsorbing the noxious gas. The humidity decreases, the adsorption filter adsorbs the noxious gas, and the alkali metal purifier filter is used. Oxygen is generated by the interchange reaction between the oxide contained in the air and the alkali metal purification material, and as the humidity increases, the harmful gas adsorbed on the adsorption filter is discharged and the harmful gas discharged is discharged from the alkali metal purification material. It can be removed by reaction with the alkali metal purification material in the filter.

According to one side, the adsorption filter is an activated carbon filter filled with activated carbon as an adsorption material, the lower the humidity, the alkali metal purification material (MO2) filled in the alkali metal purification material filter is nitric oxide in the oxide contained in the air , Sulfur oxides or carbonates can be reacted with the following chemical formula to generate oxygen.

MO2 + NO2 → MNO2 ↓ + O2 ↑

MO2 + SO3 → MSO3 ↓ + O2 ↑

MO2 + CO2 → MCO3 ↓ + O2 ↑

According to one side, as the humidity increases, the activated carbon filter sucks moisture from the air and discharges harmful gases adsorbed in pores of the activated carbon, and the alkali metal purified material filled in the alkali metal purified material filter is Oxygen radicals may be generated by reacting with moisture in the air, and the harmful gases discharged from the activated carbon filter may react with the oxygen radicals to generate oxygen or moisture while removing the harmful gases.

According to one side, the harmful gas discharged from the activated carbon filter is a volatile organic compound (VOCs) containing at least one of benzene, formaldehyde, toluene, xylene, ethylene, styrene and acetaldehyde, the volatile organic compound is It can react with oxygen radicals to generate oxygen or moisture.

According to one side, it may further include a pre-filter provided in the filter housing, for pre-filtering the dust and suspended matter in the incoming air.

According to one side, it may further include a hepa filter provided in the filter housing, to remove fine dust in the air passing through the pre-filter.

 According to one side, it may further include a negative pressure generating fan mounted on the rear portion of the filter housing, to generate a negative pressure to suck air into the air inlet of the filter housing.

According to an embodiment of the present invention, the alkali metal purifier filter having the alkali metal purifying material and the adsorption filter having the adsorbing material are combined to remove the harmful gas by appropriately reacting each filter according to the humidity. By generating the can improve the efficiency of the air purification.

1 is a view schematically showing the configuration of an air purification composite filter according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration and application according to an embodiment of the present invention. The following description is one of several aspects of the invention that can be claimed, and the following description forms part of the detailed description of the invention.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a view schematically showing the configuration of an air purification composite filter according to an embodiment of the present invention.

As shown in the drawing, the air purification composite filter 100 according to an embodiment of the present invention is an integrated filter that removes harmful gases and generates oxygen by using activated carbon and an alkali metal refining material, and a filter housing 101. And an alkali metal purifier filter 130 provided in the filter housing 101 to convert oxides in the air introduced through the air inlet of the filter housing 101 into oxygen, as well as to reduce or remove harmful gases. The filter housing 101 may include an adsorption filter 140 filled with an adsorption material that adsorbs harmful gases.

In addition, the filter further includes a pre-filter 110 and a hepa filter 120 for filtering dust and other suspended matter including fine dust, and further includes a negative pressure generating fan for forming a flow of air in the filter housing 101. 150) may be further included.

With this configuration, by operating the alkali metal purifier filter 130 and the adsorption filter according to the humidity, it is possible to convert oxides in the air into oxygen as well as to remove harmful gases. In particular, the operation of the adsorption filter 140 and the alkali metal purifier filter 130 is different depending on the humidity, when the humidity is low, the operation of the adsorption filter 140 is active to increase the adsorption efficiency of harmful gases. On the contrary, when the humidity is high, the operation of the alkali metal purification material filter 130 is actively performed, thereby completely decomposing the harmful gas and of course increasing the conversion efficiency of oxygen.

Each configuration will be described. First, the filter housing 101 of the present embodiment constitutes the appearance of the device, and various filters described above may be mounted therein. In other words, the various air filters including the alkali metal purifier filter 130 and the adsorption filter 140 are built in the filter housing 101, so that the present air purification composite filter 100 may be integrated. The filter housing 101 may be provided with an air inlet (not shown) through which the outside air is introduced and an air outlet (not shown) through which the filtered purge air is discharged, thereby circulating the filtered air back toward the air inlet. A circulation line may be provided.

As shown in FIG. 1, the pre-filter 110 according to the present exemplary embodiment is provided at the front end portion of the filter housing 101 to preliminarily filter some coarse dust or other suspended matter from air introduced from the outside. The air from which dust and suspended matter of a predetermined size is removed by the prefilter 110 may be moved to the HEPA filter 120 having the following configuration.

The HEPA filter 120 of the present embodiment is disposed after the alkali metal purifier filter and is a high-performance filter for filtering ultrafine dust or fine dust contained in the air. The metal filter material 130 may be sent to. The hepa filter 120 serves to prevent fine dust and the like that are introduced into the housing from being dusted and flowing back into the air.

On the other hand, as shown in Figure 1, the outside of the filter housing 101 of the present embodiment (or in the inner space) is a negative pressure generating fan 150 to allow the flow of air in the filter housing 101 is generated Can be mounted. Since the negative pressure generating fan 150 generates a force for sucking air by using a negative pressure rather than the conventional fan method, the negative pressure generating fan 150 may generate a suction force capable of sucking a relatively large amount of air compared to the conventional fan method. Therefore, the efficiency of air purification can be increased.

Although not shown, an air compressor (not shown) for air compression may be mounted on the outside (front or rear) of the filter housing 101. The air compressed by the air compressor may be provided to the filter housing 101, or the air provided from the filter housing 101 may be compressed to be provided to the external space.

On the other hand, as described above, in the case of the present embodiment, the alkali metal purifier filter 130 and the adsorption filter 140 operates differently depending on the humidity to remove harmful gases, as well as to generate oxygen. For example, when the humidity is low, the operation of the adsorption filter 140 is actively performed to increase the adsorption efficiency of harmful gases. On the contrary, when the humidity is high, the alkali metal purification material filter 130 is actively operated to completely decompose harmful gases. Of course, it is possible to increase the conversion efficiency of oxygen.

The alkali metal refined material filter 130 according to the present exemplary embodiment may include an alkali metal refined material (MO 2: Metal Oxide) embedded therein to primarily react with an oxide to generate oxygen.

For example, as the humidity is lowered, the alkali metal purifier filter 130 according to the present embodiment may generate oxygen by an oxidation reaction (exchange reaction) between the oxide contained in the air and the alkali metal purifier. In other words, oxygen is generated by an exchange reaction between an alkali metal refiner and an oxide. This is represented by the following chemical formula.

MO2 + CO2 → MCO3 ↓ + O2 ↑ ... equation 1

MO2 + NO2 → MNO2 ↓ + O2 ↑ ... Equation 2

MO2 + SO3 → MSO3 ↓ + O2 ↑ ... equation 3

Referring to Equation 1, when the alkali metal purification material and carbon dioxide react with each other, MCO 3 sediment may be generated and oxygen may be generated. In other words, carbon dioxide is removed and oxygen is generated. Similarly, looking at Equations 2 and 3, it can be seen that when the alkali metal refining material, nitrogen dioxide and sulfurous acid react with each other, sediments are formed and oxygen is generated.

On the other hand, when the humidity is low, the activated carbon can adsorb harmful gases in the air in the adsorption filter 140, that is, the activated carbon filter 140 of the present embodiment. At this time, the chemical reaction does not occur between the activated carbon and the noxious gas, but only the pores of the activated carbon adsorb and trap the noxious gas, so that the noxious gas in the air can be removed by the activated carbon filter 140. In other words, the lower the humidity, the higher the adsorption power to the harmful gas, and the higher the humidity, the air absorbs moisture in the air and can discharge the harmful gas adsorbed in the pores of the activated carbon.

In this case, even when the humidity is low, the alkali metal purifier filter 130 and the activated carbon filter 140 react differently, so that the alkali metal purifier filter 130 may generate oxygen by an exchange reaction. The filter 140 may adsorb harmful gases to reduce the amount of harmful gases in the air.

On the other hand, in the alkali metal purification material filter 130 of this embodiment, the higher the humidity (when the humidity is higher than the set humidity), the alkali metal purification material reacts with moisture in the air to generate oxygen radicals ([O]). Can be. In addition, the activated carbon filter 140 discharges the harmful gas adsorbed in the pores of the activated carbon while sucking moisture from the air. At this time, the harmful gas discharged from the activated carbon filter 140 reacts with the above-described oxygen radicals to generate harmful gas. Oxygen can be generated while removing.

Hazardous gases in the air may include volatile organic compounds (VOCs) such as benzene, formaldehyde, toluene, xylene, ethylene, styrene, acetaldehyde, etc. Adsorbed by pores in the activated carbon of the activated carbon filter 140. However, when the humidity increases, the above-mentioned harmful gases are released from the pores of the activated carbon, and these harmful gases are reacted with oxygen radicals generated from the alkali metal purifier filter 130 and replaced with moisture or oxygen to remove harmful gases in the air. It can be. This can be represented by the following formula.

... 식 4

... Expression 4

For example, when the alkali metal purifier of the alkali metal purifier filter 130 reacts with water (steam) in the air, oxygen radicals are generated, for example, aldehydes, ammonia, and the like may be removed to generate oxygen.

As such, even when the humidity is high (higher), first, oxygen radicals generated from the alkali metal purifier filter 130 react with the harmful gas discharged from the activated carbon filter to remove the harmful gas and generate oxygen to purify the air. Can be increased. In other words, bad air can be removed or reduced, thereby providing the purified air to the desired place.

As described above, according to the exemplary embodiment of the present invention, the alkali metal purification material filter 130 including the alkali metal purification material and the activated carbon filter 140 including the activated carbon are composed in combination, so that each filter reacts according to the humidity. By removing the harmful gas as well as generating oxygen has the advantage of improving the efficiency of air purification.

On the other hand, the present invention is not limited to the described embodiments, it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

100: air purification composite filter
101: filter housing
110: pre-filter
120: hepa filter
130: alkali metal purification material filter
140: adsorption (activated carbon) filter
150: negative pressure generating fan

Claims (7)

Filter housings;
An alkali metal purification material filter provided in the filter housing and filled with an alkali metal purification material for converting an oxide in the air into oxygen or reducing a harmful gas in the air; And
An adsorption filter provided in the filter housing and filled with an adsorption material for adsorbing the noxious gas;
Including;
As the humidity decreases, the adsorption filter adsorbs the noxious gas, and the alkali metal purification material filter generates oxygen by an interchange reaction between the oxide contained in the air and the alkali metal purification material.
The higher the humidity, the harmful gas adsorbed on the adsorption filter is discharged and the harmful gas discharged by the alkali metal purification material filter by the reaction with the alkali metal purification material, the air purification composite filter.
The method of claim 1,
The adsorption filter is an activated carbon filter filled with activated carbon as an adsorption material,
As the humidity decreases, the alkali metal purifier (MO2) filled in the alkali metal purifier filter reacts with nitric oxide, sulfur oxide or carbonate among oxides contained in the air by the following chemical formula to generate oxygen. Air purification composite filter.
MO2 + NO2 → MNO2 ↓ + O2 ↑
MO2 + SO3 → MSO3 ↓ + O2 ↑
MO2 + CO2 → MCO3 ↓ + O2 ↑
The method of claim 2,
As the humidity increases, the activated carbon filter draws out moisture from the air and discharges harmful gases adsorbed in pores of the activated carbon, and the alkali metal purified material filled in the alkali metal purified material filter contains moisture in the air. And generating oxygen radicals by reacting with each other, wherein the harmful gases discharged from the activated carbon filter react with the oxygen radicals to generate oxygen or moisture while removing the harmful gases.
The method of claim 3,
The harmful gases discharged from the activated carbon filter are volatile organic compounds (VOCs) including at least one of benzene, formaldehyde, toluene, xylene, ethylene, styrene and acetaldehyde, and the volatile organic compounds react with oxygen radicals. To generate oxygen or moisture, air purification composite filter.
The method of claim 1,
And a pre-filter provided in the filter housing to pre-filter dust and suspended substances in the air introduced therein.
The method of claim 2,
And a hepa filter provided in the filter housing to remove fine dust from the air passing through the pre-filter.
According to the first,
And a negative pressure generating fan mounted to a rear portion of the filter housing to generate a negative pressure to allow air to be sucked into the air inlet of the filter housing.

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