KR20200011179A - The Unity type Purifying Water Filter for removing Virus and Bacteria - Google Patents

Abstract

The present invention relates to an integrated water purification filter for removing viruses and bacteria, which has improved purification efficiency. The integrated water purification filter of the present invention comprises: a positive charge film filter layer (10) for removing viruses in water, heavy metals, and colloids introduced from an outer surface; and a nanofiber filter layer (20) for removing bacteria in water introduced from the outer surface.

Description

Unity type Purifying Water Filter for removing Virus and Bacteria}

The present invention is an integrated water filter for virus and bacteria removal, and more specifically, the conventional virus removal water filter and bacteria removal water purification filter formed separately in one integral filter to be installed inside the water purifier The installation space is reduced, so it is easy to downsize the water purifier, and the filter durability can be extended to extend the filter life and replacement time, and it is convenient to combine with the conventional sedimentation filter, pre- or post carbon filter, and effectively to prevent various bacteria and bacteria in the water. The present invention relates to an integrated water filter for removing viruses and bacteria that has improved purification efficiency for removal.

In modern times, as the standard of living improves, the interest in health is relatively increasing. Among them, the market for water purifier industry is expanding as interest in drinking water, which is most closely related to human life, is increasing.

In general, drinking water is divided into two cases of purchasing purified water, groundwater and bottled water, and drinking water directly into a water purifier. However, in recent years, groundwater is seriously polluted, and bottled water sold by companies is often contaminated. As the interest in water increased, the water purifier was used only for drinking water in the past, but the use of purified water is also used for the cooking water used in the kitchen as the use range is gradually expanded.

Conventionally, the water purifier purifies and discharges water introduced into the water purifier filter provided in the water purifier. The types of filters installed for the water purifier include a carbon filter, a sediment filter, and an UF membrane filter. Here, the carbon filter is generally divided into a first filter and a second carbon filter. The first filter is also called a sun carbon filter, and serves to filter chlorine, residual pesticides, detergent components, and the like. Also called and removes various odors contained in water and plays a role of improving the taste of water. The sediment filter is a filter for high turbidity to filter out suspended solids, and the UF membrane filter filters heavy metals, various microorganisms and bacteria in water.

Such a water purifier filter is installed in each filter housing, and the conventional water purifier is equipped with a plurality of filter housings each filter is provided, the volume of the water purifier increases, the material and installation costs increase, and maintenance is inconvenient There was this.

Accordingly, in Korean Patent Registration No. 10-1026928 (name of the invention: 'a water filter and a manufacturing method thereof), a sediment filter layer, ACF (Acitvated Carbon Fiber), which makes each filter function on a polypropylene (PP) nonwoven fabric ) Filter layer, UF (hollow fiber) filter layer and core (Core) filter layer to form a single integral water filter by winding it sequentially and then heat-pressing, respectively, to form filters that are conventionally individually configured to perform different purification functions I'm publishing a single filter,

In the case of the integrated filter, the core filter layer is formed by stacking multiple layers of PP nonwoven fabric, so that the strength of the core filter layer serving as the inner support is weak, so that the filter life is short, and the filter durability is increased as the water purification time is passed due to the continuous flow of water. There is a problem that the water purification efficiency is lowered, the filter replacement cycle is shortened, and the maintenance cost is increased, and the core filter layer is present at the last stage of the water filter, so that the last filter is located in the conventional water filter where the fucarbon filter is located. Compared to the conventional carbon filter layer formed by mixing and curing the granular pure carbon with a small amount of binder, the filter layer is formed by applying the ACF filter layer to the fabric nonwoven fabric serving as the base material of the filter. Is very low, there is a problem that the carbon filter water purification efficiency is lowered.

In addition, as described above, general filters used in water purifier filters include a sediment filter, a carbon filter, and an UF membrane filter. In order to utilize purified water as drinking water, like the UF membrane filter, A filter sieve for removing viruses and bacteria is essential. A reverse osmosis filter or an UF membrane filter is generally used as a filter sieve for removing viruses and bacteria in water. The reverse osmosis filter can remove not only bacteria but also viruses through a very fine pore size. However, due to the fine pore size, minerals are removed along with all impurities in the water. This low water takes a long time to purify, there is a problem of high power consumption by the operation of the pressure pump.

In the case of the UF filter body, the pore size is formed to be larger than the reverse osmosis filter, so that the differential pressure is relatively low, and the permeation flow rate is high, thereby saving water purification time. However, the bacteria have a larger pore size than the reverse osmosis filter. Although it has a removal effect, there is a problem in that the removal efficiency of the virus of some fine size is inferior, and in the case of the UF filter body, the hollow fiber is composed of hollow fibers, so that the tensile force is weak, and the hollow fiber yarn is used to increase the flow rate of water to shorten the purification time. There is a problem of breaking well, there is a problem that the internal porosity is not uniform, flows only to a specific region in the filter to reduce the filter performance, in particular, when the UF filter body is formed of a hollow fiber bundle to improve the safety of purified water Positive charge membranes or other carbon filters specialized for various virus removals to enhance There is a problem in that it is difficult to combine the filter body into a single unitary body having added back.

Accordingly, in Korean Patent Registration No. 10-1142853 (name of the invention: 'The ultra-fine polymer fibrous filter with improved heat resistance and its manufacturing method'), the ultra-fine fibers discharged by electrospinning the mixed solution of the sol-gel solution and the polymer resin Nano alumina is coated on the fibrous porous filtration layer that is randomly arranged and accumulated to post air and water treatment filters that can remove not only bacteria but also viruses, thereby removing bacteria through fine pores of the fibrous porous filter. And through the nano-alumina coated on the fibrous porous filter layer is configured to remove the virus,

Due to the filtration layer composed only of polymer fibers, it may be useful for air purification with low differential pressure, but when used as a filter for water purifier, the fine fibers in the filtration layer may be formed due to the high differential pressure caused by the flow of water in the water purifier and the high flow friction of the water. There is a problem that can be broken and spilled, due to which the durability and life of the filter is reduced, there is a safety problem that can be eluted with the broken microfibers, such as nano alumina coated on the fine fibers, combined with air and water treatment In the case of the polymer fibrous filter used as a filter has a hydrophobic property, there is a problem that the purification efficiency is significantly lowered because the flow resistance of water is higher than that of the hydrophilic material.

Patent registration No. 10-1026928 (name of the invention: 'water purification filter and its manufacturing method') Patent Registration No. 10-1142853 (Invention name: 'Ultra-fine polymer fibrous filter with improved heat resistance and manufacturing method thereof))

The present invention has been derived to solve the above problems, it is installed when installed inside the water purifier to form a single integral filter that each equipped with a separate water purification filter for virus removal and bacteria removal water for the conventional water purifier separately. It can reduce the space, make it easy to downsize the water purifier,

In particular, it increases the filter durability and extends the filter life and replacement time, makes it convenient to complex with conventional sedimentation filter or pre-and post carbon filter, and prevents the discharge of fine impurities even during long time use. And bacteria can be effectively removed.

In one embodiment of the present invention for solving the above-described problems, a predetermined thickness is provided around the support body provided in the filter housing 42 and each of the plurality of filter fabrics having different filtration functions is formed in an inner hollow cylinder. In the integrated water purification filter for virus and bacteria removal, wherein each filter layer is stacked to form a filter, a positive charge membrane filter fabric is wound around a predetermined thickness on the outer circumferential surface of the support, and viruses, heavy metals, and colloids in water flowing from the outer surface are formed. Positive charge membrane filter layer 10 for removing (Colloid); And a nanofiber filter layer 20 formed on the outer circumferential surface of the positive charge membrane filter layer 10 to a predetermined thickness and removing bacteria from the water flowing from the outer surface. The fiber filter fabric is formed by spinning the nanofibers to a predetermined thickness on the upper side of the spunbond nonwoven fabric 22 to form a nanofiber layer 24, and then another spunbonded nonwoven fabric 22 to the nano The present invention provides an integrated water purification filter (1) for removing viruses and bacteria, which is formed by ultrasonic welding in a state placed on an upper side of a textile fabric.

In the integrated water purification filter 1 for virus and bacteria removal according to one embodiment of the present invention, the nanofibers are made of polysulfone, polyurethane, polyvinylidene fluoride, or a silicone agent as a hydrophilic additive in a mixture thereof. Included and formed, the pore size of the nanofiber layer 24 may be formed to 0.3 ~ 1μm,

Preferably, the support is formed in a cylindrical shape of the inner hollow, and formed of a block of a predetermined strength to function as a support of the filter, it may be formed of a carbon block support 31 to remove residual chlorine and organic compounds.

The integrated water filter for virus and bacterium removal according to the present invention is conventionally provided with a separate filter for removing water and bacteria for removing water and bacteria for water purification as a single integrated filter. It is easy to reduce the water purifier, and to make the water purifier small,

In particular, it is possible to extend the filter life and replacement time by increasing the filter durability, and it is convenient to complex with conventional sedimentation filter, pre- or post carbon filter, and it does not discharge fine impurities even during long time use. At the same time, it can be effectively removed.

1 is a cross-sectional view showing that the filter cap is mounted on both side ends of the purified water filter according to an embodiment of the integrated water filter for removing viruses and bacteria according to the present invention, respectively;
2 is a cross-sectional view showing a nanofiber filter fabric forming a nanofiber filter layer according to an embodiment in the integrated water filter for removing viruses and bacteria according to the present invention; And,
3 is a cross-sectional view showing a process of flowing water by mounting a water filter according to an embodiment of the integrated water filter for removing viruses and bacteria according to the present invention.

DETAILED DESCRIPTION Hereinafter, embodiments of the present invention in which the above object can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names and symbols are used for the same components, and additional descriptions thereof will be omitted below.

1 is a cross-sectional view showing that the filter caps 40 and 41 are mounted at both end portions of the integrated water filter 1 for removing viruses and bacteria according to the present invention, respectively. 2 is a cross-sectional view showing a nanofiber filter fabric 21 for forming a nanofiber filter layer 20 according to an embodiment in the integrated water filter 1 for virus and bacteria removal according to the present invention. In the integrated water purification filter 1 for removing viruses and bacteria according to the present invention, the water filter 1 according to one embodiment is mounted in the filter housing 42 and is a cross-sectional view showing a process of flowing water.

The integrated water filter 1 for virus and bacteria removal according to the present invention, as shown in Figures 1 and 3, is provided in the filter housing 42, each of the plurality of filter fabrics having different filtration functions In the integrated water purification filter for virus and bacteria removal, each filter layer is wound around a support formed in a hollow cylindrical shape to form a filter layer, and a positively charged membrane filter fabric is wound around a support to a predetermined thickness to remove viruses in the water. It comprises a positive charge membrane filter layer 10 and a nanofiber filter layer 20 is wound on the outer peripheral surface of the positive charge membrane to a predetermined thickness to remove bacteria in the water.

As shown in FIGS. 1 and 3, the positive charge membrane filter layer 10 is formed by winding a positive charge membrane filter fabric on the outer circumferential surface of the filter support to be laminated to a predetermined thickness, and positive charges are applied to the nano aluminum positive charges or the fabric surface thereof. The band contains organic materials to remove various bacteria, viruses, heavy metals, and colloids.

Preferably, by combining the nano-alumina fiber or amine-based organic material to the raw material base material of cellulose acetate (Cellulose Acetate) to form the positive charge film filter fabric, the excellent durability of the raw material base material cellulose acetate Through the high differential pressure in the water purifier and the high flow frictional force of the water to prevent the raw material is broken and outflow, and to extend the durability and service life of the positive charge membrane filter layer 10, the positive charge membrane filter layer 10 The differential pressure of the inlet and outlet of the c) is kept low to increase the flow rate of water passing through the positive charge membrane filter layer 10 to shorten the water purification time.

In addition, preferably, the nano-alumina fiber or amine-based organic material is chemically bonded to cellulose acetate, which is a raw material of the positively charged membrane filter fabric, without being physically bonded through an adhesive or the like, so that the adhesive is eluted by the flow of water for a long time. And more firmly bind nano alumina fibers or amine organics to cellulose acetate.

In the case of forming a positive charge film by coating nano-alumina on the ultrafine polymer fibers to remove various bacteria, viruses, and heavy metals, the microfibers in the ultrafine polymer fiber layer are broken due to the high differential pressure caused by the flow of water in the water purifier and the high flow frictional force of the water. There is a problem that can be leaked, and was a safety problem that can be eluted with the broken microfibers, such as nano alumina coated on the fine fiber,

In the case of the present invention, by using cellulose acetate as a raw material substrate, which is generally known to have superior durability compared to ultrafine polymer fibers, it is possible to shorten the water purification period by lowering the differential pressure of water and increasing the flow rate of the filter through the water. As it is not used as a nutrient for bacteria, viruses cannot grow and thus make a more hygienic filter.

In addition, conventional nanofilters are sometimes used for the purpose of removing various bacteria and viruses. In general, nanofilters use glass fiber as a raw material substrate, and there is a risk of boron leakage, but the positively charged membrane of the present invention The filter layer 10 is a cellulose acetate as a raw material base material, there is no concern of the outflow of boron, harmless to the human body as an environmentally friendly material, it is easy to dispose because it is naturally decomposed in a natural state, there is an environmentally friendly advantage.

The nanofiber filter layer 20, as shown in Figure 1 and 2, the nanofiber filter fabric 21 is wound around the outer peripheral surface of the positive charge membrane filter layer 10 to a predetermined thickness or folded (Pleated) (Not shown) to remove bacteria in the water through the fine pore size of the nanofiber filter layer 20.

The nanofiber filter fabric 21 forming the nanofiber filter layer 20 may be formed by electrospinning Nassau fibers to a predetermined thickness on an upper surface of a spunbond nonwoven fabric 22. After forming 24, another spunbond nonwoven fabric 22 may be easily formed by ultrasonic welding in a state where it is placed on the upper side of the nanofiber layer 24,

Alternatively, as shown in FIG. 2, nanofibers 24 are electrospun to a predetermined thickness on the upper side of the spunbond nonwoven fabric 22 to form a nanofiber layer 24, and the nanofiber layer 24 is In addition, the spunbond nonwoven fabric 22 is provided on the upper side to interpose the nanofiber layer 24 between the spunbonded nonwoven fabric 22 and the low melting point fiber layer between the spunbonded nonwoven fabric 22 and the nanofiber layer 24. By providing each of (23) and thermally fusion, the nanofiber layer 24 can be more firmly bonded between the upper and lower spunbond nonwoven fabrics 22.

Through the above methods, by providing the nanofibrous layer 24 between the spunbond nonwoven fabric 22, the fine fibers of the nanofiber layer 24 are broken by the high differential pressure and the flow friction caused by the flow of water in the water purifier. It is possible to prevent the large-sized impurities present in the water through the spunbond nonwoven fabric 22 to be first removed, and then pass through the nanofiber layer 24 so that the pores of the nanofiber layer 24 are large in size. It is possible to prevent the filter life from being blocked due to clogging and the like, and to significantly improve the durability of the filter.

Preferably, the nanofibers may be formed by including a predetermined amount of a silicone agent which is a hydrophilic additive in polysulfone, polyurethane, polyvinylidene fluoride or a mixture thereof. In particular, a predetermined amount of a hydrophilic silicone agent is mixed with a polyurethane which is resistant to water and has elasticity, followed by electrospinning to form the nanofibrous layer 24, thereby utilizing the predetermined elastic force of the nanofibrous layer 24 to obtain the nanoparticles. The fibrous filter layer 20 may be elastically wrapped on the outer circumferential surface of the positive charge membrane filter layer 10 to be bonded to be laminated in close contact with each other, and the positively charged membrane filter layer 10 formed by being wrapped on the outer circumferential surface of the support is also supported by the support. It can be firmly laminated to the outer peripheral surface of the, can prevent the human hazard by conventional binder bonding, hydrophilicity is added to the nanofiber layer 24 can lower the differential pressure, increase the fluidity of the water, The surface contamination of the nanofiber layer 24 can be minimized.

Preferably, the pore size of the nanofibrous layer 24 is formed to 0.3 ~ 1μm to improve the bacteria removal and nanofiber layer 24 manufacturing efficiency together. When the pore size of the nanofiber layer 24 is formed to 0.3 μm or less, the efficiency of removing bacteria is insignificant, but the formation of the nanofiber layer 24 is not easy, and the differential pressure is increased, so that the durability of the filter and the fluidity of water are significantly reduced. When the pore size of the nanofiber layer 24 is formed to 1 μm or more, the bacteria removal efficiency may be significantly reduced.

In addition, the support is formed as a cylindrical hollow inside, as shown in Figures 1 and 3, formed of blocks of a predetermined interval to function as a support of the filter and remove residual chlorine and organic compounds (31) It can be formed into).

The carbon block support 31 is located at the center of the filter and functions as a support for supporting the entire filter, and at the same time, the carbon is the last step in the whole water purification step of the integrated water filter 1 for removing viruses and bacteria according to the present invention. Acting as a filter, the water flowing through the positive charge membrane filter layer 10 is finally passed to remove residual chlorine and organic compounds in the water, improve the water taste of the purified water to improve the outflow path 32 of the inner hollow Accordingly discharged from the final filter.

The carbon block support 31, which is formed in an inner hollow cylinder, mixes granular activated carbon made of carbonaceous material such as palm shell, various woods, lignite, anthracite coal, bituminous coal, and a binder acting as an adhesive and a hardening agent. After stirring, it is molded into an inner hollow cylinder, dried and cured to produce a predetermined strength.

Preferably, the binder and bioceramic are stirred and mixed with granular activated carbon made from coconut shell, and then dried and cured to further improve the deodorizing effect and water taste through the far-infrared effect of the bioceramic component.

The integrated water filter 1 for removing viruses and bacteria according to the present invention uses the carbon block support 31 having a predetermined strength instead of the multi-layered nonwoven fabric layer used as a conventional filter support. The internal support strength of the filter can be prevented from being weakened to extend the durability and service life of the filter, and the carbon filter functions in the final filter stage to improve the final water taste of the purified water.

As described above, the integrated water filter 1 for removing viruses and bacteria according to the present invention, unlike the conventional polymer fibrous filter which forms a filter layer with one filter material and simultaneously removes viruses and bacteria, the virus has relatively increased pores. By improving the fluidity of the water through the size, combined with alumina or amine-based organic material to the filter substrate formed of cellulose acetate, which is significantly more durable than polymer fibers, the virus can be effectively removed while preventing the filter substrate from being broken and spilled in water for a long time. And, bacteria can be removed through the fine pore size of the nanofiber filter layer 20 formed by including a nanofiber layer 24 electrospun on the upper side of the spunbond non woven fabric (22) Binarize each filter layer, virus and foil Each filter layer is made of filter fabrics made exclusively for removing terria, and each filter layer is formed separately and laminated by an integral water filter (1), thereby improving virus and bacteria removal efficiency and improving filter durability and water purification efficiency. Can be significantly improved,

In addition, it is possible to reduce the installation space when installed inside the water purifier by miniaturizing the water purifier by forming a single integrated filter that is equipped with a virus removal filter and a bacteria removal water filter separately for the conventional water purifier. .

Although some embodiments have been described above by way of example, it will be apparent to those skilled in the art that the present invention may be embodied in many different forms without departing from the spirit and scope thereof.

Accordingly, the above-described embodiments are to be considered as illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are included within the scope of the present invention.

1: integrated water filter for virus and bacteria removal
10: positive charge membrane filter layer
20 nanofiber filter layer 21 nanofiber filter fabric
22: spunbond nonwoven fabric 23: low melting point fiber layer
24: nano fiber layer
31: carbon block support
32: outflow
40: upper cap 41: lower cap
42 filter housing 43 inlet end
44: outlet 45: rubber O-ring
46: discharge stage

Claims (3)

Integrated filter for virus and bacteria removal provided in the filter housing 42, each of the plurality of filter fabrics having different filtration functions are laminated with a predetermined thickness around the support formed in the inner hollow cylindrical shape, each filter layer is formed In the water filter,
A positive charge membrane filter layer (10) formed on the outer circumferential surface of the support to be wound around a predetermined thickness and removing viruses, heavy metals, and colloids from water introduced from the outer surface; And,
And a nanofiber filter layer 20 formed on the outer circumferential surface of the positive charge membrane filter layer 10 to a predetermined thickness and removing bacteria from the water flowing from the outer surface.

The nanofiber filter fabric,
After spunbond non woven fabric (Spunbond Non Woven Fabric) 22 to form a nanofiber layer 24 by spinning a nanofiber to a predetermined thickness, another spunbond nonwoven fabric 22 of the nanofiber layer 24 Integrated water purification filter for virus and bacteria removal, characterized in that formed by ultrasonic welding in a state on the upper side.
The method of claim 1,
The nanofiber is,
Polysulfone, polyurethane, polyvinylidene fluoride or a mixture thereof is formed by containing a predetermined amount of a silicone agent as a hydrophilic additive,
The pore size of the nanofiber layer (24) is integral water filter (1) for virus and bacteria removal, characterized in that formed in 0.3 ~ 1μm.
The method according to claim 1 or 2,
The support,
Integral water purification for virus and bacteria, characterized in that formed in a hollow cylindrical shape, formed of a block of a predetermined strength to function as a support of the filter, and a carbon block support 31 for removing residual chlorine and organic compounds. Filter (1).

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