KR101731948B1 - Air cleaner - Google Patents

Abstract

The present invention relates to an air purifying apparatus, and more particularly, to an air purifying apparatus having a front cover which is openable and closable, a front cover for opening and closing the front cover, a housing having a discharge port and a suction port, a pretreatment filter removably installed at the rear of the suction port, 1. An air purification apparatus comprising: a horizontal filter unit horizontally attached and detached; and a blowing fan mounted on an upper portion of the horizontal filter unit to suck and discharge air, wherein the pre-treatment filter is coated with carbon, An inorganic gas removing filter portion laminated in the order of an environmental filter, an inorganic acid filter and an environmental filter; an organic gas removing filter portion laminated in this order of an environmental filter, an organic gas filter and an environmental filter; A deodorizing filter, and a particulate removing filter which is a hepar filter consisting of charged fibers It provides the group purifier.

Description

{Air CLEANER}

The present invention relates to an air purifier, and more particularly, to an air purifier having multiple filters to remove harmful inorganic acid components and organic gases present in the air.

Generally, a laboratory or a laboratory performs a variety of experiments by mixing various kinds of drugs, and conducts research or analysis of samples obtained from the experiment. In the course of these experiments or in the cultivation and analysis process, noxious gas, fine dust and other viruses may be generated.

In particular, inorganic gases are generated in chemical, medical, pharmaceutical, hospital, chemical plant, clean room, product development room, school laboratory, animal laboratory, and other laboratories and workplaces using various mineral acids .

However, since most of the harmful substances generated are spread in the room air, workers who work there must be directly or indirectly exposed to harmful gas. Therefore, these gases, which are harmful to the human body, must be removed before they are exposed to workers.

In order to remove harmful gas, many kinds of air purification devices using anion generation type, filter type, electric dust collection type, UV / photocatalytic type and the like are widely used in various industrial facilities. However, these air purifiers have very low filtration efficiency of the mineral acid gas generated during the operation, so that the effect of the removal of the mineral acid gas is very low.

Therefore, there is a growing need for an air purification device capable of removing other harmful substances while also removing mineral acid gas and organic gas generated in a laboratory or the like.

A related prior art is Korean Patent No. 10-1447765 (registered on September 29, 2014. hereinafter, referred to as 'prior art') for a method for removing mineral acid gas using a water filter system have.

The prior art describes a method for removing acid gas from a gas stream, and describes a method for absorbing an acid gas generated from a gas stream by a liquid absorbent composed of a mixture of an aliphatic amine compound and water. However, such a liquid absorbent containing water may cause corrosion of the laboratory fan when installed in a laboratory or the like, which is difficult to maintain and dispose of.

Generally, activated carbon is used to remove organic gas. However, there is a possibility that activated carbon may spontaneously ignite when a filter for removing mineral acid gas is used together.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an air purifier capable of removing not only organic gas but also inorganic acid gas from a single apparatus.

It is another object of the present invention to provide an air purification apparatus using a filter for removing inorganic acid gas composed of a solid filter medium without a complicated additional device.

It is another object of the present invention to provide an air purification apparatus capable of preventing spontaneous ignition of activated carbon which may occur when an organic gas filter and an inorganic acid filter are used together.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

According to an aspect of the present invention, there is provided an air purifier including: a housing having a front cover openable and closable, the front cover opening and closing the front cover, the housing having a discharge port and a suction port; And a blowing fan installed on the upper portion of the horizontal filter portion to suck and discharge air, wherein the pre-treatment filter includes a carbon coating layer Wherein the horizontal filter section comprises an inorganic gas removing filter section laminated in this order of an environmental filter, an inorganic acid filter and an environmental filter, an organic gas removing filter section laminated in this order of an environmental filter, an organic gas filter and an environmental filter, A deodorizing filter made of activated carbon made of carbonaceous material not added, and a HEPA filter made of charged fibers It may include emitter.

Specifically, the inorganic acid filter may be composed of magnesium-aluminum oxide prepared by mixing zeolite with a magnesium compound and then firing to remove an inorganic acid component in the air to be inhaled.

Specifically, the organic gas removing filter unit can remove all of the polarity and non-polarity organic gas by filling the organic gas filter mixed with the activated carbon and zeolite in a ring form and filling the space between the environmental filters .

Specifically, the environmental filter may be manufactured by treating a nonwoven fabric made of polyethylene with an antibacterial agent.

Specifically, the mounting order of the inorganic acid removing filter unit and the organic gas removing filter unit may be such that the inorganic acid removing filter unit is located below the organic gas removing filter unit.

Specifically, the housing has a plurality of horizontally elongated filter mounting grooves formed on both inner sides thereof, and both side edges of the inorganic acid removing filter unit, the organic gas removing filter unit, the deodorizing filter and the particulate removing filter are slidably fitted, The filter mounting grooves or the filters may be provided with soft materials such as rubber to allow both side edges of the filters to be hermetically sealed.

As described above, according to the present invention, both an organic gas filter and an inorganic acid gas filter are installed in one apparatus, so that not only an organic gas but also an inorganic acid gas can be removed from a single apparatus.

Further, since an inorganic acid filter composed of a solid filter medium is used, there is an effect that a complicated additional device is not necessary for removing the inorganic acid gas.

1 is an external perspective view of an air purification apparatus according to an embodiment of the present invention.
2 is an exploded perspective view of the air purifying apparatus shown in FIG.
3 is a cross-sectional view of the air purifying apparatus shown in FIG. 1 as viewed from the front.
4 is a cross-sectional view of the inorganic acid removing filter portion and the organic gas removing filter portion shown in FIG.
FIG. 5 is a sectional view of the air purifying apparatus shown in FIG. 1 as viewed from the side.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIGS. 1 and 2 are an external perspective view and an exploded perspective view of an air purifying apparatus according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating an internal connection of an air purifying apparatus according to an embodiment of the present invention.

1 to 3, an air purifier 100 according to an embodiment of the present invention includes a housing 110 having a front surface and a front cover for opening and closing the front surface and having a discharge port and a suction port, A horizontal filter unit 130 installed between the discharge port and the suction port to horizontally attach and detach a plurality of filters, and a blowing fan 120 installed on the upper portion of the horizontal filter unit to suck and discharge air, (140).

First, the air purifier 100 sucks polluted air from the lower part, filters fine dust and noxious gas using various filters installed in the middle part, and discharges the purified air to the upper part.

The housing 110 has a box-like structure having a front surface opened and a rear surface closed. A discharge port 112, a suction port 113 and a switch 114 are formed in the front cover for opening and closing the front surface. The filter and the ventilation fan 140 can be mounted.

That is, the front cover 111 is formed to cover the front surface of the housing 110, and has a discharge port 112 for discharging purified air at an upper predetermined height, and a suction port 113 and a power switch 114 is mounted at an upper end thereof.

The discharge port 121 and the suction port 123 formed in the front cover 111 may have a plurality of long holes formed in the horizontal direction or the vertical direction.

When the front cover 111 is coupled to the front surface of the housing 110 so that the front cover 111 coincides with the opened shape of the housing 110, the inside of the housing 110 is completely sealed, .

Next, the housing 110 is provided with two fan mounting plates (not shown) for mounting a blowing fan 140, which is a device for sucking outside air, between a height at which the discharge port 121 and the suction port 123 are formed, 115), a plurality of filter mounting grooves (116) formed inside the housing so that various filters can be mounted thereunder, a first filter mounting plate (117) for fixing and supporting the mounted various filters, and a pre- And a second filter mounting plate (118) for fixing and supporting the filter (120).

Here, the various joint portions of the body of the housing 110 are completely sealed so that the various filters installed and the air sucked only through the predetermined path can be moved.

The filter mounting groove 116 is formed in the inner surface of the height between which the discharge port 112 and the suction port 113 are formed and which is a long depressed groove for allowing various filters to be inserted and detached and mounted in a sliding manner. A plurality of filters are formed at regular intervals so that a plurality of filters can be mounted. The filter mounting groove 116 may be made of a soft material such as rubber that can be hermetically sealed so that the noxious gas sucked at this time does not escape from between the filter and the filter mounting groove 116. The corner portions of various filters in which the various filters are in contact with the filter mounting groove 116 are also the same.

The first filter mounting plate 117 is a rectangular band-shaped protruding structure formed under the filter mounting groove 116 and extending from both inner sides of the housing 110, So that the rim of the filter located at the bottom of the filter can be closely contacted.

The second filter mounting plate 118 is a rectangular protruding structure extending vertically downward and forward from the first filter mounting plate 117 and extending from both inner sides of the housing 110, The rim portion of the preprocessing filter 120 to be mounted is in close contact and can be abutted.

Various components for filtering the contaminated air are mounted inside the housing 110. A preprocessing filter 120 is mounted between the rear of the suction port 113 and the second filter installation plate 118 and between the upper portion of the first filter installation plate 117 and the lower portion of the fan installation plate 115 And a blowing fan 140 is installed on the upper part of the fan mounting plate 115. The blowing fan 140 is connected to the blowing fan 140, Respectively.

The pretreatment filter 120 is mounted on the rear of the suction port 113 and the lower portion of the housing 110 so as to collect particulates in the noxious gas to be sucked. The outer shape of the filter is a rectangular shape and a rim is formed along the edge It has a fine mesh structure with carbon coating to capture fine particles.

Thus, the pretreatment filter 120 is installed behind the suction port 113 to primarily filter the contaminated air. That is, it is possible to collect coarse particles having a particle size of 300 탆 or more prior to various filtering processes that follow, and a carbon coating is applied thereto, so that the user can easily clean the coarse particles.

The horizontal filter unit 130 includes a plurality of filters to remove inorganic gas and organic gas. The inorganic filter unit 131, the organic gas removal filter unit 133, the deodorization filter 135 And a particulate removing filter 137.

The inorganic acid removing filter unit 131 is installed in the lowest layer among a plurality of filters horizontally inserted into the body of the housing 110 so as to remove the inorganic acid gas from the noxious gases.

The shape of the outer appearance is rectangular, and a rim is formed along the edge. The outer filter is composed of three layers (see FIG. 4A) in which an environmental filter 139 is laminated on both sides of the inorganic acid filter 132.

The environmental filter 139 may be formed of a nonwoven fabric or the like. In the present invention, the environment filter 139 is fabricated by treating a nonwoven fabric made of polyethylene (PE) with a microbicide to prevent various bacteria and viruses from multiplying The life of the particulate removing filter 137 which is a HEPA filter located at a higher level can be protected. Especially, the inhibition rate against Escherichia coli, Pneumococcus, Staphylococcus aureus and Antifungal is excellent.

The inorganic acid filter 132 is a solid solution containing a mixture of magnesium-aluminum oxide and calcium hydroxide, which is prepared by mixing zeolite with magnesium compound and then calcining to remove acid components in the air.

Particularly, the zeolite among the substances constituting the inorganic acid filter 132 helps to neutralize the inorganic acid gas by extending the reaction time when the calcium hydroxide, which is another component of the inorganic acid filter 132, It also absorbs inorganic gas itself.

This process will be described in more detail. First, zeolite is a mineral, that is, a crystalline aluminum silicate mineral, in which an anion generated by the bonding of aluminum oxide and silicate oxide is combined with an alkali metal and an alkaline earth metal. Next, zeolite is a material that absorbs moisture in the air, and when it comes into contact with a liquid containing water, it easily restores crystal water. The crystal number of the zeolite at this time is different from that of other compounds and does not affect the stability of the crystal structure at all. Due to the structural specificity, it can contain about 10 to 15 wt% of water, and when the acid gas reaches the inorganic acid filter 132 and is liquefied with an extremely strong moisture absorptive power, which is not in simple physical adsorption, By extending the reaction time of the reaction can help to neutralize.

The zeolite also has metal cations in its crystal structure. These metal cations act to attract the negative radicals of the polar molecules electrostatically or polarize and polarize the molecules. The polarity effect of these zeolites is much stronger than that of other adsorbents. In the filter medium of the present invention, the zeolites are attracted by chemical interaction to remove the anions such as NO 3 ^- , Cl ^- , F ^- will be.

In other words, zeolite is a component having strong acidity and excellent adsorption effect on not only flammable liquid ethanethiol, methanethiol but also acidic noxious gases such as ammonia, hydrogen sulfide, COS gas and carbon dioxide. Since zeolite is excellent in fire resistance, it does not have such a risk when compared with activated carbon which is dangerous to fire if it is contacted with nitric acid (HNO3) which is a high temperature oxidizing acid commonly used in adsorbents. Which is suitable for the inorganic acid filter 132 of the present invention.

Finally, the zeolites used in the present invention are generally Ca ²⁺ or Mg

^{2 +} ions. In the filter material of the present invention, due to the characteristics of the zeolite, it forms a strong bonding structure with Mg-based molecules and calcium hydroxide (Ca (OH) 2) do. The formation of this bonding structure leads to the formation of strong cation atmospheres around the zeolite to form many acids, NO3 ^- , Cl ^- , F ^- and electric doublelayer, which are converted to zeolite by NO3 ^- , Cl ^- , F ^- To be fixed.

In the present invention, the magnesium-aluminum oxide prepared by mixing the zeolite with the magnesium compound and firing as described above is used in the inorganic acid filter 132.

Specifically, the magnesium compound to be used may be at least one of MgO, MgCO3, MgCl2 and MgSO4. When this magnesium compound is calcined at a certain temperature for a predetermined time, it becomes a magnesium compound, and the magnesium compound is mixed with the zeolite, When baked for a certain period of time, magnesium-aluminum oxide is formed.

At this time, the generated magnesium oxide or magnesium-aluminum oxide can remove the acid by removing the hydroxyl group while meeting the anion such as the acid and acting as the anion exchange resin while bonding to the hydroxide group which is separated from the acid.

In other words, the basic structure of the magnesium-aluminum (Mg-Al) oxide of the inorganic acid filter 132 of the present invention is the same as that of Hydrotalcite (HT), and the basic structure of HT is generally ([Mg1 ²⁺ _-x Al _x ³⁺ (OH) ₂ ] (A ^n- _{) x / n m} H ₂ O) and has anion exchange function (where A: anion, x: atomic number (0.2 ≤ x ≤ 0.33), n : Ionic weight, m: mole number of the molecule). Therefore, the basic structure of the Mg-Al oxide of the inorganic acid removing filter 143 of the present invention is composed of an octagonal hydroxide layer having a cation such as Brucite, and this hydroxyl group has high anion exchange ability, The hydroxyl groups are removed and the acid binds to the layer, acting as an anion exchange resin.

Therefore, in the present invention, the magnesium-aluminum oxide produced by calcining the mixture of the magnesium compound and the zeolite can be removed by neutralizing all the acid components such as nitric acid, hydrochloric acid, hydrofluoric acid, sulfuric acid and phosphoric acid.

The calcium hydroxide in the inorganic acid filter 132 serves to improve the efficiency of the inorganic acid filter 132 as a filter medium and to increase the durability and the use time of the inorganic acid filter 132 and to control the pH of the inorganic acid filter 132 .

This process is described in more detail. First, calcium hydroxide is a basic substance containing a hydroxyl group. It has two hydroxyl groups per one molecule of calcium hydroxide. It dissolves only about 0.82 g in 1 L of water. However, Is high. Therefore, once dissolved in water, calcium hydroxide shows a strong basicity of about pH 12.5. Therefore, in the present invention, calcium hydroxide, which is a strong base, is used for the purpose of increasing the pH of the filter medium.

In other words, calcium hydroxide is a strong base, but it has a homogeneity that only a certain amount is dissolved by carbon dioxide. Therefore, high heat is not generated in the production of an acid removing filter ring, and the efficiency, use time and durability of the filter can be improved by maintaining a constant hydrogen ion index .

In contrast, sodium hydroxide, which is another strong basic substance, generates high heat during the production of a filter material for removing acid, and is harmful to the health of the operator and is unsuitable for use indoors or outdoors. Therefore, calcium hydroxide is used in the present invention.

In addition, the solubility of calcium hydroxide increases in proportion to the concentration of carbon dioxide, because the concentration of carbon dioxide increases as the amount of acid gas generated in the laboratory or the workplace increases, and as the calcium hydroxide dissolves in proportion to a decrease in the use of less, Accordingly, the solubility of calcium hydroxide can be controlled by itself and dissolved by dissolving the carbon dioxide generated in the workplace.

The organic gas removing filter unit 133 is mounted directly above the inorganic acid removing filter unit 131 among a plurality of filters horizontally inserted into the body of the housing 110 so as to remove the organic gas from the harmful gas.

The outer shape of the outer shape is rectangular, and a rim is formed along the edge. The outer shape of the outer filter is composed of three layers in which an environmental filter 139 is laminated on both sides of the organic gas filter 134. Here, the environmental filter 139 may be a nonwoven fabric or the like, and the details thereof are the same as described in the inorganic acid removal filter unit 131 (see FIG. 4B).

Specifically, the organic gas filter 134 may be a filter material obtained by mixing activated carbon and zeolite in an appropriate ratio. Most of the organic gases generated in the laboratory are generated from organic solvents, which are largely divided into polar and non-polar materials. The harmful gas generated from such an organic solvent also becomes polar and nonpolar. Therefore, both of the activated carbon having a strong adsorptivity and the zeolite having a strong adsorptivity against polarity are used.

That is, in the present invention, the organic gas filter 134 may be formed by making activated carbon and zeolite into a ring form, mixing them, and filling the space between the environment filters 139.

The deodorization filter 135 has a rectangular shape and a rim along the rim. The deodorization filter 135 is made of carbonaceous activated carbon having no binder added to the circumferential activated carbon. The deodorization filter 135 includes a plurality of filters horizontally inserted into the body of the housing 110 (VOCs), carbon disulfide (CS2), carbon monoxide (CO), acetone (Acetone), ethanol (Ethanol), and hydrogen sulfide (VOCs), which are installed after the inorganic acid removing filter unit 131 and the organic gas removing filter unit 133, Remove ammonia (Hydrogen sulfide Ammonia), formaldehyde (formaldehyde), acetaldehyde and the like.

The particulate removing filter 137 is rectangular and has a rim along the edge. The particulate removing filter 137 is mounted on the top of a plurality of filters horizontally inserted into the body of the housing 110 to form strong static electricity (HEPA) filter which functions to collect fine particles of 0.3 mu m or more by the force of the HEPA filter. Viruses and various bacteria are finally removed.

The air blowing fan 140 is installed above the various filters and sucks noxious gas and discharges the purified air. The air blowing fan 140 includes two fan mounting plates 115 formed on the inner wall of the housing 110, Respectively. At this time, the lower fan mounting plate 115 of the two fan mounting plates 115 closely contacts with the various filters installed below the fan mounting plate 115, and is installed in close contact with the blowing fan 180 just above the fan mounting plate 115, The air sucked by the air blowing fan 180 must pass through various filters so that the air can be discharged to the outside through the inside of the air purifying device 100.

Hereinafter, the operation of the air purifier 100 will be described in detail.

FIG. 5 is a cross-sectional view of the air purifier 100 according to the present invention as viewed from the side. FIG. 5 is a view showing arrows illustrating how the noxious gas moves within the air purifier 100.

First, the operation of the switch 114 mounted on the front cover 111 of the air purifier 100 rotates the blowing fan 140 inside the air purifying device 100 and starts to suck the noxious gas from the outside.

The noxious gas is introduced into the air purifying device 100 through the inlet 112 formed below the front portion of the air purifying device 100 and the preliminary filter 120 installed in the rear of the inlet 113 First, relatively large particulate of 300 mu m or more is trapped and filtered, and then collected in the space below the mounted horizontal filter unit 130. [

Next, the harmful gas collected in the lower space of the air purifier 100 passes through the horizontal filter unit 130 composed of various filters by the suction force of the blowing fan 180.

That is, the noxious gas passes through the inorganic acid removing filter unit 131 located at the lowest position in the horizontal filter unit 130, and the inorganic acid contained therein is removed. Then, the noxious gas passes through the organic gas removing filter unit 133 located thereon, Polar and non-polar organic materials are removed.

At the same time, the environmental filter 139 attached to the inorganic acid removing filter unit 131 and the organic gas removing filter unit 133 also removes fine particles from the noxious gas once again to the pretreatment filter 120.

Here, the inorganic acid removing filter unit 131 should be located below the organic gas removing filter 133 because of the following reasons.

When the noxious gas passes through various filters by the suction force of the air blowing fan 140 in the air purifying device 100, the noxious gas becomes hot, and the heat generated in the inside of the device affects various filters, It may lead to inhibition factors and filter deformation.

Specifically, the zeolite contained in the inorganic acid removal filter unit 131 absorbs moisture in the air, and has a certain structure in the structure. Therefore, it helps to liquefy the inorganic acid gas when the inorganic acid gas passes, give. However, if excess moisture generated in this process is impregnated into the organic gas filter 134, the activated carbon of the organic gas filter 134 is oxidized, and the reaction heat generated at this time may accumulate to cause spontaneous ignition.

Therefore, in order to prevent spontaneous ignition in the present invention, the order in which the various filters are installed in the air purifier 100 is set such that the organic gas removing filter 133 is located above the inorganic acid removing filter 131 .

Next, the noxious gas passes through the deodorization filter 135, and the remaining gases are filtered.

Then, the noxious gas passes through the particulate removing filter 170 located at the uppermost one of the various filters of the horizontal filter unit 130, so that the minute fine particles remaining due to the strong static force by the charged fibers are collected.

As described above, the external noxious gas is purified while passing through various filters of the horizontal filter unit 130 mounted below the blowing fan 140, and then is sucked by the suction force generated by the rotating force of the fan of the blowing fan 140 110). The purified air is discharged to the outside through the outlet 112 formed in the front cover 111.

The above-described air purifier is not limited to the configuration and the operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: air purifier 110: housing
111: front cover 112: outlet
113: inlet 114: switch
115: fan mounting plate 116: filter mounting groove
117: first filter mounting plate 118: second filter mounting plate
120: preprocessing filter 130: horizontal filter unit
131: inorganic acid removal filter unit 132: inorganic acid filter
133: organic gas removing filter unit 134: organic gas filter
135: deodorization filter 137: particulate removal filter
139: environmental filter 140: blowing fan

Claims (6)

A front cover which is openable and closable can be opened and closed, and a front cover for opening and closing the front face is provided with a housing having a discharge opening and a suction opening, a pretreatment filter detachably mounted on the rear of the suction opening, and a plurality of filters horizontally attached and detached between the discharge opening and the suction opening And an air blowing fan mounted on the horizontal filter unit and above the horizontal filter unit to suck and discharge air,
The pretreatment filter is coated with carbon, and the horizontal filter unit includes an inorganic acid removing filter unit stacked in this order of an environmental filter, an inorganic acid filter, and an environmental filter, and an inorganic filter unit including an environmental filter, an organic gas filter, And a particulate removing filter which is a HEPA filter consisting of a deodorizing filter made of activated carbon made of carbonaceous material to which no binder is added and an electrically charged fiber,
Wherein the environmental filter is made of a nonwoven fabric,
The inorganic acid filter is a solid solution containing a mixture of magnesium-aluminum oxide and calcium hydroxide,
Wherein the organic gas filter is formed by mixing activated carbon and zeolite in the form of a ring and then mixing them to form one layer so that the organic gas filter is filled between the environment filters, Removable,
Wherein when the inorganic acid removing filter unit and the organic gas removing filter unit are mounted, they are horizontally mounted, and the inorganic acid removing filter unit is mounted below the organic gas removing filter unit.
The method according to claim 1,
Wherein the inorganic acid filter comprises magnesium-aluminum oxide prepared by mixing zeolite with a magnesium compound and then firing to remove an inorganic acid component in the air to be inhaled.
delete The method according to claim 1,
Wherein the environmental filter is manufactured by treating a nonwoven fabric made of polyethylene material with an antibacterial agent.
delete The method according to claim 1,
The housing has a plurality of horizontally elongated filter mounting grooves formed on both sides of the interior thereof so that both side edges of the inorganic acid removing filter unit, the organic gas removing filter unit, the deodorizing filter and the particulate removing filter are slidably fitted, Wherein both side edges of each of the filter mounting grooves or the filters are padded with a rubber-like flexible material so as to be able to be hermetically sealed.

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