KR102238089B1 - Filter for air purification using cypress tree - Google Patents

Abstract

Disclosed is an air purifying filter using Chamaecyparis obtusa, which contains Chamaecyparis obtusa chips or charcoal inside the filter, so that it is possible to not only purify fine dust, but also emit phytoncide to simultaneously exert a sterilizing effect. The air purifying filter using Chamaecyparis obtusa according to an embodiment of the present invention comprises: (a) an outer frame; (b) a filter attached to upper surface, lower surface or upper and lower surfaces of the outer frame to form an inner space; (c) an inner frame installed inside the outer frame; and (d) a Chamaecyparis obtusa product filled in the space formed by the inner frame.

Description

Filter for air purification using cypress tree}

The present invention relates to an air cleaning filter using cypress wood, and more particularly, containing cypress wood chips or charcoal inside the filter, and provides a cypress wood capable of simultaneously exerting a sterilizing effect by releasing phytoncide as well as purifying fine dust. It relates to the used air cleaning filter.

As the air pollution becomes severe, the air contains harmful substances and polluted dust that are harmful to the human body, and when the air containing harmful substances and contaminated dust that is harmful to the human body is not filtered, it is good for the human body. Since it has no effect, various types of air purifiers (also referred to as air purifiers) are used to filter out the above-described harmful substances and contaminated dust.

An air purifier is a machine that purifies the air by inhaling the air in the room and removing the pollutants. These air purifiers exist in various ways, and can be broadly divided into mechanical, electric, and ionic types.

Mechanical type refers to the use of a fan to suck in outside air, pass it through a filter, filter it, and then release it to the outside.

The electric type means that external air is sucked in by a fan, pollutants in the air are charged to the (+) pole, collected by a filter of the (-) pole, filtered, and then discharged to the outside.

Ion formula refers to filtering pollutants in the air by generating (-) ions in the interior and releasing them into the room. Accordingly, pollutants charged to the (-) pole are attracted to the filter of the (+) pole.

These methods are the most basic types of air purifiers, but in some cases, various combinations of these methods are possible. In this way, air purifiers differ in their methods, but they all filter pollutants in the air with the filter inside.

Such air purifiers are equipped with HEPA (High Efficiency Particulate Air), a filter paper made of asbestos fiber, a known special antistatic fiber to filter out even fine harmful substances and contaminated dust. Contaminated in the air with its strong adsorption power, it has the purification power to cleanly remove up to 99.97% of harmful substances such as house dust, mites, viruses, molds, etc. that are harmful to the human body, and polluted dust of about 0.3 microns, which is the most harmful particulate matter to the human body. It served to purify the air to a fairly clean state.

However, in the case of such a sea wave filter, it has the disadvantage that it does not have much effect with respect to microbial contaminants because it simply performs the role of a filter, and thus its ability to respond to various contaminants is inferior, and does not perform a sterilization function. Various methods have been developed to solve this problem. Among them, in the case of an air purifier using cypress trees, the phytoncide generated from cypress trees gives the user a refreshing effect, and at the same time, the effect of odor removal and sterilization can be expected.

However, in the case of conventional air purifiers using cypress wood, the cypress wood layer has to be manufactured as a separate layer as it does not have a filter effect, and accordingly, the thickness of the filter becomes thick, making it inconvenient to use and reducing the amount of air outflow. Have.

(0001) Korean Patent Application Publication No. 10-2020-0098845 (0002) Korean Patent Registration No. 10-1892926

The present invention has been conceived to solve the above problems, and an object of the present invention is to provide a filter capable of emitting phytoncide by containing cypress wood chips or charcoal.

Another object of the present invention is to provide an air cleaning filter using cypress wood capable of simultaneously performing the role of a pre-filter as well as the emission of phytoncide by processing the cypress wood chips into a porous manner.

In addition, another object of the present invention is to fix the cypress wood chips or charcoal using a frame made of a specific shape, and provide cypress wood that can maintain performance without biasing the cypress wood chips or charcoal to one side even when used for a long time. It is to provide the used air cleaning filter.

The subject of the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

An air cleaning filter using cypress wood according to an embodiment of the present invention for solving the above problem includes: (a) an outer frame; (b) a filter attached to the upper, lower, or upper and lower surfaces of the outer frame to form an inner space; (c) an inner frame installed inside the outer frame; And (d) it may include a cypress wood processed product that is filled in the space formed by the inner frame.

In one embodiment, the outer frame is a frame manufactured in a square shape by connecting cypress beams having a thickness and width of 1 to 20 mm, and the outer frame is 10 to 100 cm in width and 10 to 100 cm in length and 0.1 to 20 cm in thickness. It is manufactured, and the filter is adhered to an upper surface, a lower surface, or an upper surface of the outer frame to discharge air introduced from the upper or lower side to the lower or upper side. The filter includes: a pre-treatment filter; A mesh filter to which constant power is applied; And an antibacterial filter comprising nanoparticles coated with a metal or metal salt having antibacterial activity on the surface, and the pretreatment filter comprises tourmaline or a photocatalyst, and is manufactured in a mesh or mesh shape to provide deodorization, sterilization or dehumidification effects. And, the net filter to which the electrostatic power is applied contains 2 to 10% by weight of a conductive material, generates static electricity by rubbing with adjacent fibers according to the flow of air, and by electrostatic attraction due to the static electricity that is killed. Adsorbs fine particles, and the conductive material includes at least one selected from carbon nanotubes, carbon fibers, metal nanofibers, metal nanoparticles, graphene and fullerene, and the antibacterial filter is copper, nickel, cobalt, iron , At least one metal selected from manganese and zinc or a salt thereof is coated nanoparticles, and the nanoparticles have a core-shell structure coated with 5 to 50 parts by weight of the metal or metal salt relative to 100 parts by weight of the core. , The inner frame physically divides the space formed by the outer frame and the filter, and the cypress wood processed product includes cypress wood chips or cypress wood charcoal, and the cypress wood chips; (i) cutting the cypress tree to a size of 1 to 10 mm; (ii) heating the cut cypress tree at a temperature of 200 to 300° C. and a pressure of 0.5 to 2 MPa, then reducing the pressure to atmospheric pressure to expand it; And (iii) pulverizing the puffed cypress wood to a size of 1 to 10 mm to prepare cypress wood chips, wherein the cypress wood chips have a specific surface area of 1 to 100 m 2 /g, and the Cypress wood charcoal, (i) the step of cutting the cypress wood to a size of 1 to 10 mm; (ii) charging the cut cypress wood into a kiln and then replacing the inside of the kiln with an inert gas atmosphere; (iii) carbonizing the inside of the kiln by replacing it with an inert atmosphere and heating it to 700-1500°C; (iv) cooling the carbonized cypress charcoal; (v) heating the cooled cypress charcoal to 700 to 900°C in an inert gas atmosphere, and then supplying water vapor to activate it; And (vi) drying the activated cypress charcoal, wherein the cypress wood processed product comprises; (i) 50 to 80 parts by weight of cypress chips or cypress charcoal; And (ii) 20 to 50 parts by weight of natural pulp non-woven fabric, wherein the cypress chips or cypress charcoal are uniformly dispersed on the natural pulp non-woven fabric substrate, and the cypress wood processed product is a spike roll made of softwood pulp Inflating by using; Processing the expanded yarn into a thin sheet form; Alternately laminating the sheet and the cypress wood chips or cypress wood charcoal; And it is manufactured by a method comprising the step of spraying and fixing a natural adhesive on the laminated sheet, the cypress wood processed product may be cut to a certain size and filled in the space formed by the inner frame.

According to an embodiment of the present invention, since the filter includes cypress chips or cypress wood charcoal, phytoncide can be released when air passes through the filter, thereby providing a refreshing feeling to the user and exerting a sterilizing effect. I can.

In addition, unlike conventional cypress wood filters, cypress wood chips or charcoal are manufactured to have a porosity, so that it can serve as a pre-filter. It is possible to manufacture a filter with performance.

In addition, by using an antibacterial filter and a net filter with constant power applied to both sides of the filter, it is possible to provide a filter capable of adsorbing fine dust without the use of an additional filter by maximizing filtering performance.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present invention.

1 shows an air cleaning filter using cypress wood according to an embodiment of the present invention.
2 shows an air cleaning filter manufactured in a different shape of an inner frame according to an embodiment of the present invention.
3 is a cross-sectional view of an air cleaning filter according to an embodiment of the present invention.
4 is a photograph showing an air cleaning filter including cypress wood chips according to an embodiment of the present invention.
5 is a photograph showing an air cleaning filter including cypress charcoal according to an embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only intended to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

Terms including ordinal numbers such as first and second may be used to describe various elements, but these elements are not limited by the above-described terms. The above-described terms are used only for the purpose of distinguishing one component from other components.

In the present specification, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance. When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Meanwhile, a "module" or "unit" for a component used in the present specification performs at least one function or operation. In addition, the "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of "modules" or a plurality of "units" excluding "module" or "unit" to be performed in specific hardware or performed by at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

The present invention (a) an outer frame; (b) a filter attached to the upper, lower, or upper and lower surfaces of the outer frame to form an inner space; (c) an inner frame installed inside the outer frame; And (d) it relates to an air cleaning filter using cypress wood containing cypress wood processed products filled in the space formed by the inner frame.

The outer frame 100 is a portion forming the outside of the filter and may be manufactured in a rectangular frame shape manufactured using a square material. The outer frame 100 may be manufactured in a square shape as described above to form a side portion of the filter, and may include a cypress wood processed product 300 to be described later.

In addition, the outer frame 100 may be a frame manufactured in a square shape by connecting cypress wood beams having a thickness and width of 1 to 20 mm. The outer frame 100 forms a side surface of the filter and determines the thickness of the filter, and when the outer frame 100 has a thickness of less than 1 mm, the strength of the frame is lowered as well as a processed cypress tree inserted inside. As the content of (300) is low, it is difficult to expect the effect of the processed cypress tree (300), and if it has a thickness exceeding 20 mm, the flow rate of air passing through it decreases and the filter occupies a large volume, so it is used as a filter. This can be difficult.

The filter 400 may be combined and used on the upper and lower surfaces of the outer frame 300 formed as described above. The filter 400 may be formed only on one side of the outer frame 100, but it is preferable that the filter 400 is fixed to both sides of the outer frame 100 to purify the incident air.

The filter 400 is attached to the upper surface or the upper surface of the outer frame 100 to purify the incident air, and may be attached to the upper surface and the lower surface to form an inner space together with the outer frame 100.

The filter 400 is adhered to the upper surface, the lower surface, or the upper and lower surfaces of the outer frame 100 to discharge air introduced from the upper or lower side to the lower or upper side. The filter 400 includes: a pretreatment filter; A mesh filter to which constant power is applied; And an antibacterial filter including nanoparticles coated with a metal or metal salt having antibacterial activity on the surface.

The pretreatment filter serves to primarily filter out large particles contained in the air introduced into the filter 400, and includes phytoncide, tourmaline, or a photocatalyst, and is manufactured in a mesh or mesh type to deodorize, It may have a sterilizing or dehumidifying effect.

Looking at this in detail, when a large particle or moisture is introduced into the mesh filter, which will be described later, the electrostatic performance may decrease, resulting in a decrease in the performance of the filter. In order to prevent this, the pretreatment filter may maximize the collecting power of the mesh filter to which the static power is applied by removing large particles or moisture. In the case of the pre-treatment filter, since large particles or moisture, especially water droplets, are physically filtered, it is manufactured in a mesh shape or a mesh shape to maximize the inflow of air and prevent intrusion of large particles and water droplets.

In addition, the pre-treatment filter may include phytoncide, tourmaline, or a photocatalyst to have a deodorizing or sterilizing effect. The phytoncide, tourmaline, or photocatalyst may be mixed and used in the yarn when the pre-treatment filter is manufactured. Alternatively, phytoncide, tourmaline, or a photocatalyst may be adsorbed to the pretreatment filter and used. In addition, in the case of adsorbing phytoncide, tourmaline or photocatalyst after production as described above, phytoncide, tourmaline, or photocatalyst is adsorbed and then an appropriate amount of natural adhesive is applied to prevent the phytoncide, tourmaline or photocatalyst from escaping from the pretreatment filter. can do.

The net filter to which the electrostatic power is applied is used to remove fine particles from the gas first filtered by the pretreatment filter, and the net filter is made of fibers containing 2 to 10% by weight of a conductive material. , Static electricity is generated by rubbing with adjacent fibers according to the flow of air, and dust particles may be adsorbed due to the generated static electricity.

The conductive material serves to evenly distribute static electricity generated by being included in the mesh filter over the entire mesh filter. In general, friction occurs between adjacent fibers due to the flow of air, which generates static electricity, but due to the nature of the air purifier using a filter, a large amount of static electricity is generated due to movement that does not occur in the center, whereas there is little movement around the frame, so the amount of static electricity is generated. It falls, and the static electricity generated accordingly may be different depending on the part. Therefore, by including the conductive material in the mesh filter as described above, the static electricity can be uniformly dispersed in the mesh filter. In addition, the conductive material may play a role of lowering the electrical resistance of the mesh filter, and accordingly, may generate more static electricity due to friction.

The conductive material may include at least one selected from carbon nanotubes, carbon fibers, metal nanofibers, metal nanoparticles, graphene, and fullerene. It is preferable that the conductive material has an appropriate ductility for convenience when using the filter. Therefore, it is preferable to use carbon nanotubes, carbon fibers, and metal nanofibers made in a fibrous form as the conductive material. In addition, when the fibrous conductive material is included in the net filter in a certain ratio or more, a conductive network may be formed, so that the static electricity can be more quickly dispersed throughout the net filter. In addition, in the case of metallic nanoparticles, graphene, and fullerene, which are particulate conductive materials, rather than being included alone, they may be mixed with the fibrous conductive material. In this case, the particulate conductive material may be used as a protrusion generating a large amount of static electricity. It plays a role, and the static electricity generated in this way moves along the fibrous conductive material, so that more static electricity can be evenly distributed.

In addition, the gas first filtered by the pretreatment filter contains fine particles that are not filtered by the pretreatment filter. These fine particles are small in size and can be easily adsorbed and removed by static electricity.

Looking at this in detail, the mesh-type filter is manufactured by combining fibers including a conductive material in a mesh shape, and friction between the fibers is continuously generated due to the movement of the gas and the vibration of the surroundings. At this time, static electricity is generated due to friction between the fibers, and the static electricity is diffused and stored throughout the mesh filter due to the conductive material included in the fibers. At this time, when the gas, which has been primarily treated by the pretreatment filter, is supplied, the fine particles form van der Waals bonds by the static electricity and are agglomerated or adsorbed to the mesh filter to be filtered.

In addition, the surface of the fiber may be coated with a charging polymer resin to induce more static electricity. The charged polymer resin may be a resin that has a charge property, or an additive is added to the resin to provide chargeability, or a resin may be charged by water treatment. These charged polymer resins have a triboelectric coefficient in the range of a positive charge affinity value of + 30 nC/J or more or a negative charge affinity value of -30 nC/J or less. I can. Non-limiting examples of the chargeable polymer resin that can be used in the present invention include polyvinyl chloride (PVC, triboelectric coefficient -100nC/J), polypropylene (triboelectric coefficient -90nC/J), polyamide (friction Electricity coefficient +30nC/J), polyethylene terephtalate (Triboelectric coefficient -40nC/J), but is not limited thereto. Since polyvinyl chloride is charged only by friction with air without any additional additives, it is preferable for the purposes of the present invention.

The net filter to which the electrostatic power is applied has a thickness of 0.1 to 0.5 mm to impart mechanical strength of a certain level or more, and may have a size of 10 to 30 mesh so that air is well permeable to secure ventilation. . The eye may have a shape such as a square, a rectangle, a rhombus, an oval, and a hexagon, but is not limited thereto. In addition, the charging mesh substrate may have a basis weight of 100 to 150 g/m 2 so that the multilayered filter has a mechanical strength of an abnormal level or higher and excellent visible light transmission is secured. Within the above specification, the mesh filter may have optimal performance, and if it exceeds the above specification, adsorption of fine particles may be impossible or may not have desired physical properties.

The antibacterial filter is a portion that detoxifies pathogenic substances that have passed through the mesh filter or adsorbed on the mesh filter, and may include nanoparticles coated with a metal or metal salt having antibacterial activity on the surface. The metal used at this time may include at least one of copper, nickel, cobalt, iron, manganese, and zinc, and it is also possible to use a metal salt of the metal. As the metal or metal salt coated on the nanoparticles has antibacterial activity, it can kill or detoxify pathogens that are in contact, and thus play a role of detoxifying pathogens that cannot be filtered out by the electrostatic attraction of the mesh filter. You can do it. In addition, since the antibacterial filter is manufactured by being laminated with the mesh-type filter, pathogens adsorbed on the mesh-type filter can be detoxified, thereby extending the use period of the mask.

The nanoparticles may have a core-shell structure coated with 5 to 50 parts by weight of the metal or metal salt, preferably 25 to 50 parts by weight, and more preferably 40 to 45 parts by weight, relative to 100 parts by weight of the core. When the metal or metal salt is included in an amount of less than 5 parts by weight, the antibacterial effect of the metal or metal salt may be reduced, and when it is included in an amount of 50 parts by weight, only cost may be added without further increase in antibacterial activity.

The filter manufactured as described above may be attached to the upper surface or the upper surface of the outer frame 100. Through this, the filter including the cypress tree can have a high filter effect without using an additional filter unlike the existing cypress tree filter.

An inner frame 200 that physically divides the outer frame 100 and the space formed by the filter may be installed inside the outer frame 100. In the space formed by the outer frame 100, a processed cypress product to be described later may be charged 300. However, in the case of the cypress tree processed product 300, it is not physically fixed and is charged inside the outer frame 100 or simply wrapped up and down with a non-woven fabric 500, so that when the air cleaning filter is positioned vertically, it is lowered toward the ground. I can sit down. In order to prevent this, it is preferable that the inner space of the outer frame 100 is uniformly divided using the inner frame 200 (see FIG. 1). At this time, the inner frame 200 may simply divide the space of the outer frame 100 in a lattice shape, but it is divided to have various patterns so that when the air cleaning filter is installed to protrude to the outside, it has a new aesthetic. It can also be done (see Fig. 2).

Cypress wood processed product 300 may be filled in the space formed by the inner frame 200.

The cypress tree is one of Japan's representative trees and has good wood quality and excellent scent, so it is highly practical. It is widely used not only for making furniture, but also for interior walls and interiors of buildings. As it is known that phytoncide contained in cypress is effective in treating atopy, various household items using cypress such as pillows, wallpaper, cutting boards, and toys are widely used. In Korea, it is distributed mainly in Jeju Island and southern regions. As it is known that the scent of cypress trees contains phytoncide, planting is increasing. Growing areas are also increasing as the growth areas are rising to the north due to the effects of global warming. The National Forest Research Institute of Korea Forest Service said in 2014 that it was confirmed through animal experiments that elemol in essential oil extracted from cypress leaves is effective in treating atopy.

In the case of the present invention, the cypress tree processed product 300 obtained by processing the cypress tree by a certain method may be included in the filter. Accordingly, when purifying air using the filter, phytoncide may be released, which may have an effect not only for sterilizing pathogens in the air, but also for alleviating atopic diseases.

The cypress wood processed product 300 may include cypress wood chips or cypress wood charcoal.

The cypress tree chip means that the cypress tree is cut into a certain size, and in the present invention, the cypress tree chip which is puffed and then cut to have porosity may be used (see FIG. 4).

To this end, the cypress wood chip; (i) cutting the cypress tree to a size of 1 to 10 mm; (ii) heating the cut cypress tree at a temperature of 200 to 300° C. and a pressure of 0.5 to 2 MPa, then reducing the pressure to atmospheric pressure to expand it; And (iii) pulverizing the puffed cypress wood to a size of 1 to 10 mm to produce cypress wood chips.

The step (i) is a process of cutting the collected cypress trees into a certain size, and cutting them to a certain size before performing the swelling process, and is a process for performing the puffing process to be described later more efficiently. At this time, when the cypress tree is cut to a size of less than 1 mm, handling is difficult due to its small size, and when cutting to a size exceeding 10 mm, it takes a lot of time to be used for puffing and thus efficiency may decrease. In addition, the collected cypress tree may be used by removing twigs and leaves and peeling the bark during the cutting process. Leaves, twigs and peels also contain a large amount of phytoncide, but it is desirable to remove and use powder since the leaves, twigs and peels have weak hardness even after puffing. .

The step (ii) is a step of swelling the cut cypress tree, which is heated at a temperature of 200 to 300°C and a pressure of 0.5 to 2 MPa, and then reduced to atmospheric pressure to expand the swelling. At this time, when the temperature is less than 200°C or the pressure is less than 0.5Mpa, smooth swelling does not occur, and when the temperature exceeds 300°C, cypress trees may be carbonized. In addition, when heating to a pressure exceeding 2Mpa, it is uneconomical because additional materials are consumed to maintain the high pressure. When heating and pressurization are completed as described above, swelling can be performed by rapidly removing the pressure. That is, the cypress tree may be pressurized into the tissue through high pressure and high pressure processes, and the moisture in the tissue may be vaporized through rapid decompression, and thus may be processed to have porosity.

Cypress wood processed to have porosity as described above may have a specific surface area of 1 to 100 ㎡/g. That is, the swollen cypress may be used as a porous adsorbent, and thus may be used as an adsorbent for adsorbing dust in the filter.

The cypress wood puffed as described above can be cut into a constant size of 1 to 10 mm and processed into cypress wood chips. At this time, if it is processed to a size of less than 1mm, handling may be difficult due to its small size, and if it is processed to a size exceeding 10mm, the surface area decreases, so that the extraction of active ingredients including phytoncide and the adsorption performance of dust may deteriorate.

Also, instead of the cypress wood chips, cypress wood charcoal may be used (see FIG. 5). The cypress wood charcoal can reduce the amount of phytoncide emission compared to cypress wood chips, but as it has a higher porosity, it can adsorb not only fine dust but also volatile organic compounds. Therefore, it can be selectively used with the filter including the cypress wood chips, and separately from this, it is possible to mix the cypress wood chips and cypress wood charcoal at a predetermined ratio to fill the air cleaning filter.

To this end, the cypress charcoal comprises the steps of: (i) cutting the cypress wood into a size of 1 to 10 mm; (ii) charging the cut cypress wood into a kiln and then replacing the inside of the kiln with an inert gas atmosphere; (iii) carbonizing the inside of the kiln by replacing it with an inert atmosphere and heating it to 700-1500°C; (iv) cooling the carbonized cypress charcoal; (v) heating the cooled cypress charcoal to 700 to 900°C in an inert gas atmosphere, and then supplying water vapor to activate it; And (vi) drying the activated cypress charcoal.

The step (i) is a process of cutting the collected cypress trees into a certain size, and cutting them to a certain size before performing the puffing process. This is a process for more efficiently performing the carbonization process to be described later. At this time, when the cypress tree is cut to a size of less than 1 mm, handling is difficult due to its small size, and when cutting to a size exceeding 10 mm, a lot of time used for carbonization may be required, resulting in a decrease in efficiency. In addition, the collected cypress tree may be used by removing twigs and leaves and peeling the bark during the cutting process. Leaves, twigs and peels also contain a large amount of phytoncide, but it may generate powder during carbonization, and the leaves, twigs and peels have weak hardness even after carbonization, so it is preferable to remove and use the powder. .

The cypress wood cut as described above can be charged into a kiln and then carbonized. However, in the existing charcoal manufacturing process, charcoal is produced by charging wood in a kiln and then igniting the wood itself, but in this case, the active ingredient contained in the cypress is evaporated and disappears, so in the case of the present invention, the inside of the kiln is replaced with an inert gas. And carbonized by heating with external heat. At this time, the inert gas used may be nitrogen, helium, neon, argon, or xenon, preferably nitrogen gas.

After replacing the inside of the kiln with an inert gas as described above, the cypress wood can be carbonized by heating the inside of the kiln to a temperature of 700 to 1500°C. Through this, the cypress tree may be carbonized and have porosity at the same time, and when it is included in the filter, it is possible to adsorb not only fine dust but also volatile organic compounds. At this time, when the temperature of the kiln is less than 700° C., carbonization is not complete and the porosity may decrease. When the temperature exceeds 1500° C., the yield of cypress charcoal may decrease due to thermal decomposition due to high temperature.

Cypress charcoal prepared as described above may be subjected to an activation step to increase affinity with volatile organic compounds and dust. In the conventional activation step of activated carbon, a basic solution and an acid solution were used, but in this case, the phyton cheese remaining in the cypress charcoal is highly likely to be damaged. Therefore, in the case of the present invention, it is preferable to activate it by using water vapor at high temperature.

To this end, the cypress wood charcoal may be activated by heating the cooled cypress wood charcoal to 700 to 900°C in an inert gas atmosphere, and then supplying water vapor to activate it. At this time, nitrogen, helium, neon, argon, or xenon may be used as the inert gas, and nitrogen gas may be preferably used. When the activation temperature is less than 700°C, the activation effect may be reduced, and when the activation temperature exceeds 900°C, thermal decomposition May occur, resulting in a decrease in the yield of the charcoal.

After activation is completed as described above, the charcoal is cooled and dried to produce cypress charcoal. In addition, the cypress wood charcoal may be cut to have a certain size in the same manner as the cypress wood chips, but unlike the cypress wood chips, the size of the cypress wood chips decreases during the charcoal manufacturing process, and thus can be used without any other cutting process.

The cypress wood chips or cypress charcoal processed as described above may be filled in the space formed by the inner frame 200 as it is, but the non-woven pulp non-woven fabric to fix the cypress wood processed product 300 and improve filter performance at the same time. It is preferable that it is fixed using 500 and filled in the space formed by the inner frame 200 (see FIG. 3).

At this time, the processed cypress wood products; (i) 50 to 80 parts by weight of cypress chips or cypress charcoal; And (ii) 20 to 50 parts by weight of natural pulp nonwoven fabric. When the amount of cypress chips or cypress charcoal is less than 50 parts by weight, the effect of releasing active ingredients by cypress trees may be reduced, and when the amount exceeds 80 parts by weight, the fixability is poor, and when the filter is used vertically, it may be lowered to the lower part. I can.

In addition, the cypress tree processed product 300 includes the steps of expanding the yarn made of softwood pulp using a spike roll; Processing the expanded yarn into a thin sheet form; Alternately laminating the sheet and the cypress wood chips or cypress wood charcoal; And spraying and fixing a natural adhesive on the laminated sheet.

It is preferable to use softwood pulp as the pulp. In the case of softwood pulp, the length of the fibers constituting the spread has an easy length to form the nonwoven fabric 500 of the present invention, and the durability is ?穿爭け? Therefore, it is suitable for use in the filter of the present invention.

The expanding step of the pulp is a step of expanding the softwood pulp using a spike roll, which expands the pulp fibers to reduce the density thereof. Through this, the pulp is dispersed in a fiber unit and at the same time uniformly dispersed to have a fiber structure that can be used in the nonwoven fabric 500. In the case of generally manufactured pulp, since wood fibers are used, the fibers are agglomerated, but through this process, the fibers are evenly dispersed and the density is lowered, thereby facilitating the manufacture of nonwoven fabrics.

The expanded yarn as described above can be processed into a thin sheet form. To this end, the expanded yarn may be compressed or laminated.

The yarn processed in the form of a sheet may be alternately stacked with the cypress wood chips or cypress wood charcoal (see FIG. 3). The sheet may be laminated to have a shape of a nonwoven table 500, and in this process, it may be mixed with the cypress wood chips or cypress wood charcoal to be filled into the filter. To this end, by alternately stacking cypress wood chips or cypress wood charcoal during the lamination process, the cypress wood chips or cypress wood charcoal may be fixed in the filter so as not to descend. In addition, since the nonwoven fabric 500 has a structure that allows air to pass through, the performance degradation of the filter can be minimized, and since it contains the cypress chips or cypress wood charcoal inside, cypress wood chips or cypress wood charcoal It can exert the effect of releasing active ingredients and adsorbing pollutants.

As described above, the cypress wood processed product 300 manufactured integrally with the nonwoven fabric 500 may be cut to a certain size and inserted into a space formed by the inner frame. At this time, it is also possible to fill the space formed by the inner frame with a cypress wood product manufactured integrally with one non-woven fabric, and cut the cypress wood product manufactured integrally with the non-woven fabric into a predetermined size, and then into the space formed by the internal frame. It is also possible to insert and fill a predetermined number.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and the present invention is generally in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Of course, various modifications may be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

100: outer frame
200: inner frame
300: Cypress tree processed product
400: filter
500: non-woven fabric

Claims (2)

(a) outer frame;
(b) a filter attached to the upper, lower, or upper and lower surfaces of the outer frame to form an inner space;
(c) an inner frame installed inside the outer frame; And
(d) a cypress wood processed product filled in the space formed by the inner frame;
In the air cleaning filter using cypress wood comprising a,
The outer frame is a frame manufactured in a square shape by connecting cypress wood beams having a thickness and width of 1 to 20 mm,
The outer frame is manufactured in a width of 10 to 100 cm, a length of 10 to 100 cm and a thickness of 0.1 to 20 cm,
The filter is adhered to the upper, lower, or upper and lower surfaces of the outer frame to discharge air introduced from the upper or lower side to the lower or upper side,
The filter,
Pretreatment filter;
A mesh filter to which constant power is applied; And
It includes an antibacterial filter comprising nanoparticles coated with a metal or metal salt having antibacterial activity on the surface,
The pretreatment filter contains tourmaline or a photocatalyst, and is manufactured in a mesh shape or a mesh shape to have a deodorizing, sterilizing or dehumidifying effect,
The net filter to which the electrostatic power is applied contains 2 to 10% by weight of a conductive material, generates static electricity by rubbing with adjacent fibers according to the flow of air, and fine particles due to electrostatic attraction due to the generated static electricity. Adsorption,
The conductive material includes at least one selected from carbon nanotubes, carbon fibers, metal nanofibers, metal nanoparticles, graphene and fullerene,
The antibacterial filter includes nanoparticles coated with one or more metals or salts thereof selected from copper, nickel, cobalt, iron, manganese and zinc,
The nanoparticles have a core-shell structure coated with 5 to 50 parts by weight of the metal or metal salt relative to 100 parts by weight of the core,
The inner frame physically divides the space formed by the outer frame and the filter,
The cypress wood processed product includes cypress wood chips or cypress wood charcoal,
The cypress wood chips;
(i) cutting the cypress tree to a size of 1 to 10 mm;
(ii) heating the cut cypress tree at a temperature of 200 to 300°C and a pressure of 0.5 to 2 MPa, and then reducing the pressure to atmospheric pressure to expand it; And
(iii) manufactured by a method comprising the step of pulverizing the puffed cypress wood to a size of 1 to 10 mm to produce cypress wood chips,
The cypress wood chip has a specific surface area of 1 to 100 m 2 /g,
The cypress charcoal,
(i) cutting the cypress tree to a size of 1 to 10 mm;
(ii) charging the cut cypress wood into a kiln and then replacing the inside of the kiln with an inert gas atmosphere;
(iii) carbonizing the inside of the kiln by replacing it with an inert atmosphere and heating it to 700-1500°C;
(iv) cooling the carbonized cypress charcoal;
(v) heating the cooled cypress charcoal to 700 to 900°C in an inert gas atmosphere, and then supplying water vapor to activate it; And
(vi) It is manufactured by a manufacturing method comprising the step of drying the activated cypress charcoal,
The cypress processed product is;
(i) 50 to 80 parts by weight of cypress chips or cypress charcoal; And
(ii) 20 to 50 parts by weight of natural pulp nonwoven fabric, and
The cypress wood chips or cypress wood charcoal are uniformly dispersed on the natural pulp nonwoven base material,
The above cypress products are
Expanding the yarn made of softwood pulp using a spike roll;
Processing the expanded yarn into a thin sheet form;
Alternately laminating the sheet and the cypress wood chips or cypress wood charcoal; And
It is manufactured by a method comprising the step of spraying and fixing a natural adhesive on the laminated sheet,
The air cleaning filter using cypress wood, characterized in that the cypress wood processed product is cut to a certain size and filled in the space formed by the inner frame.
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