Water filtering device

Abstract

The water filtration device according to the present invention comprises: a water storage container part which has an open upper side and is formed so as to be recessed downward, thereby forming a first water storage space on the inner side thereof; the upper side of the water inlet container part is open, the water inlet container part is formed in a downward concave mode, a second water storage space is formed in the inner side of the water inlet container part, and the water inlet container part is arranged on the upper portion of the inner side of the container part; and a filter unit which is separably fixed to the water inlet container unit, filters water supplied to a second water storage space of the water inlet container unit and then discharges the filtered water to the first water storage space, the filter unit including a pre-filter including a first filter member, a second filter member, and a second filter member, the first filter member being disposed in the first water storage space, the second filter member being disposed in the second water storage space, and the second filter member being disposed in the second water storage space. The hollow tube is formed in the center of the hollow tube; and a second filter member disposed in the hollow of the first filter member and made of a material different from that of the first filter member.

Description

Technical Field

[0001] The invention relates to a simple water filtering device. Background Art

[0002] In recent years, with the development of industry, water pollution and the resulting water shortage have become increasingly serious. The reality is that with the upgrading of industrial structures, population growth, and improved living standards, the demand for high-quality water has increased dramatically. However, water pollution caused by domestic sewage and industrial wastewater has become increasingly serious, leading to an even greater shortage of available water. To address this issue, water purifiers have been developed and widely used to provide clean drinking water.

[0003] This type of water purifier purifies raw water such as tap water into drinking water that meets the requirements of Article 5, Paragraph 3 of the Drinking Water Management Act. It supplies water after it undergoes physical and chemical processes and is filtered using a water purification filter.

[0004] A water purifier is a device that processes and filters water through physical and chemical processes before supplying it to the user. There are several types of water purifiers: natural filtration, which uses gravity to force stored water through a ceramic filter; direct filtration, which connects the purifier directly to a tap; ion exchange resin, which separates and removes dissolved metal ions from the water; distillation, which purifies water by cooling the steam generated when boiling water; and reverse osmosis, which uses pressure to force water through a semipermeable membrane to filter out impurities.

[0005] That is, water purifiers can be divided into the following methods based on the water purification method: natural filtration method, which uses gravity to force stored water to flow through a ceramic filter; direct filtration method, which connects the water purifier directly to the faucet; ion exchange resin method, which uses ion exchange resin filters to separate and remove dissolved metal ions in the water; distillation method, which cools the water vapor generated when boiling water and purifies the water; and reverse osmosis method, which uses pressure to force water to flow through a semipermeable membrane to filter out impurities.

[0006] Among the various water purifier methods mentioned above, natural filtration requires no additional power source and is often used for portability in the field. As prior art, Korean Patent Publication No. 10-2012-0108410 relates to portable water purifiers. Another prior art is Korean Registered Utility Model No. 20-0429134, which relates to an alkaline reduced water generator with natural filtration-based water purification. This prior art demonstrates that, unlike direct filtration methods, natural filtration water purifiers incorporate a separate tank for storing raw water. Summary of the Invention

[0007] Problems to be solved by the invention

[0008] Physical filtration is performed in the sediment nonwoven fabric included in the pre-filter of the water filtration device of the present invention.

[0009] The sediment-removing nonwoven fabric can filter out particulate matter, rust, and suspended matter larger than 3 to 5 μm. Furthermore, it can prevent the outflow of fine dust even when the water flows in the reverse direction.

[0010] Furthermore, adsorption and filtration are performed in a carbon block included in the pre-filter.

[0011] The carbon block can adsorb and remove residual chlorine, volatile organic compounds (VOCs), heavy metals, and particulate matter in the water, improve the turbidity and color of the water, and also adsorb and remove odors.

[0012] And, electrostatic adsorption is performed in the electrostatic adsorption material included in the post filter.

[0013] Through electrostatic adsorption materials, bacteria and viruses in water can be adsorbed and removed.

[0014] Furthermore, physical filtration is performed in an ultrafiltration (UF) membrane included in the post-filter.

[0015] The ultrafiltration membrane can filter out bacteria and particulate matter larger than 0.2μm in the water.

[0016] Also, ion exchange is performed in the ion exchange resin included in the pre-filter.

[0017] The (cation) exchange resin can remove the main lime substances such as calcium and magnesium in the water through ion exchange, thereby reducing the hardness value of the water.

[0018] Furthermore, in the case of the present invention, the problem of water backflow in the gravity filtration method can be solved by the flow path structure that filters from the hollow of the carbon block to the outside.

[0019] Furthermore, by accommodating at least three filter components in one filter housing, the filtering capacity can be improved and the filter can be miniaturized. By arranging multiple filter components horizontally, the flow path structure can be improved, achieving high flow rate and high performance.

[0020] Means for solving problems

[0021] The water filtering device provided by the present invention includes: a water storage container portion, the upper side of which is open and recessed downward, thereby forming a first water storage space inside; a water inlet container portion, the upper side of which is open and recessed downward, thereby forming a second water storage space inside, and the water inlet container portion is arranged at the upper inner side of the container portion; and a filter portion, which can be detachably fixed to the water inlet container portion, and when water supplied to the second water storage space of the water inlet container portion flows in, the filter portion filters the water and then spits it out into the first water storage space.

[0022] The filter unit includes a prefilter, which includes: a first filter component configured as a hollow tube with a hollow formed in the center; and a second filter component arranged in the hollow of the first filter component and composed of a material different from that of the first filter component.

[0023] The water flowing into the pre-filter first flows through the second filter component and then flows through the first filter component.

[0024] The first filter member is formed of a carbon block having a hollow shape.

[0025] The second filter member is formed of a hollow sediment nonwoven fabric disposed on the first filter member.

[0026] The pre-filter includes: a first pre-filter disposed on one side; and a second pre-filter disposed side by side and spaced apart from the first pre-filter.

[0027] A post-filter is arranged between the first pre-filter and the second pre-filter, and the post-filter has at least one of an electrostatic adsorption material or an ultrafiltration membrane built in. The water discharged from the first pre-filter and the second pre-filter flows through the post-filter and is then discharged into the first water storage space.

[0028] The filter unit further includes a first post-filter having an electrostatic adsorption component built therein. Water flowing through the pre-filter flows through the first post-filter and is then discharged into the first water storage space.

[0029] The electrostatic adsorption material has a hollow tube shape and is formed with wrinkles in a circumferential direction.

[0030] The filter unit further includes a second post-filter having an ultrafiltration membrane built therein. The water flowing through the pre-filter flows through the second post-filter and is then discharged into the first water storage space.

[0031] The water inlet container portion is formed with a filter accommodation portion that is recessed downward below the second water storage space. A discharge port is formed at a lower end of the filter accommodation portion. The discharge port is open to discharge filtered water into the first water storage space.

[0032] The filter unit includes a filter case that is inserted into the filter accommodation portion in a vertical direction and is detachable from the filter accommodation portion.

[0033] The filter housing is composed of a lower housing and an upper housing. The lower housing is arranged on the lower side and is recessed downward. The upper housing covers the upper side of the lower housing.

[0034] An extension wall extending downward is formed along the periphery of the upper shell, and a lower end of the extension wall is inserted into and fixed to the upper end of the lower shell.

[0035] A first step portion is formed along the periphery at the lower end of the extension wall, which is recessed from the outer surface toward the inner side. A second step portion is formed along the periphery at the upper end of the lower shell, which is recessed from the inner surface toward the outer side. The first step portion is inserted into the second step portion.

[0036] A gripping portion is formed on the upper end of the upper shell and protrudes upward.

[0037] The upper shell has an inlet formed therein. The inlet is open in a vertical direction so that water in the second water storage space flows into the interior of the shell.

[0038] The inlet is connected to the hollow portion of the first filter member.

[0039] A drain port is formed at the lower end of the lower casing. The drain port is open in the vertical direction and drains water inside the casing downward.

[0040] The water flowing through the post-filter is discharged to the outside of the filter housing through the discharge port.

[0041] The water filtration device can be applied to at least any one of a simple water purifier, an under-sink water purifier, a natural filtration water purifier, a gravity filtration water purifier, and a pot-type water purifier.

[0042] Effects of the Invention

[0043] According to the present invention, a complex flow path structure is improved and simplified, and high flow rate processing is achieved, that is, the purified water flow rate can be increased.

[0044] Physical filtration is performed in the sediment nonwoven fabric included in the pre-filter of the water filtration device of the present invention.

[0045] The non-woven fabric can filter out particulate matter, rust, and suspended matter larger than 3 to 5 μm. Furthermore, even if the water flows in the reverse direction, fine dust will not flow out.

[0046] Furthermore, adsorption and filtration are performed in a carbon block included in the pre-filter.

[0047] It also has the following advantages: through the carbon block, it can adsorb and remove residual chlorine, volatile organic compounds (VOCs), heavy metals, and particulate matter in the water, improve the turbidity and color of the water, and can also adsorb and remove odors.

[0048] And, electrostatic adsorption is performed in the electrostatic adsorption material included in the post filter.

[0049] It also has the following advantages: it can adsorb and remove bacteria and viruses in water through electrostatic adsorption materials.

[0050] And, physical filtration is performed in an ultrafiltration membrane included in the post-filter.

[0051] The ultrafiltration membrane can filter out bacteria and particulate matter larger than 0.2μm in the water.

[0052] Also, ion exchange is performed in the ion exchange resin included in the pre-filter.

[0053] The invention also has the following advantages: the (cation) exchange resin can remove the main lime substances such as calcium and magnesium in the water by ion exchange, thereby reducing the hardness value of the water.

[0054] Furthermore, the present invention has the following advantages: in the case of the present invention, the problem of water backflow in the gravity filtration method is solved by the flow path structure of filtering from the hollow of the carbon block to the outside.

[0055] Furthermore, it has the following advantages: by accommodating at least three filter components in one filter housing, the filtering capacity can be improved and the filter can be miniaturized; by lateral arrangement of multiple filter components, the flow path structure can be improved and high flow and high performance can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a three-dimensional diagram of a water filtration device provided by one embodiment of the present invention.

[0057] Figure 2 It is shown from Figure 1 The picture shows the state after the cover is separated.

[0058] Figure 3 It is an exploded perspective view of a water filtration device provided by one embodiment of the present invention.

[0059] Figure 4 It is an exploded perspective view of a filter unit which is a component of the present invention.

[0060] Figure 5 It is a partially cutaway perspective view of a water filter device provided by one embodiment of the present invention.

[0061] Figure 6 It is a cross-sectional view of a portion of a water filtration device provided by one embodiment of the present invention, in which a filter unit is installed.

[0062] Figure 7 This is a perspective view showing an example of an electrostatic adsorption member built into the first post filter which is a component of the present invention.

[0063] Figure 8 This is a cross-sectional view showing an example of a second post filter which is a component of the present invention. DETAILED DESCRIPTION

[0064] Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the concept of the present invention is not limited to the embodiments shown below. Those skilled in the art who understand the concept of the present invention should be able to easily implement other embodiments within the scope of the same concept by adding, changing, deleting, or supplementing constituent elements, and such embodiments should also be included within the scope of the concept of the present invention.

[0065] Regarding the drawings in the following embodiments, although they are embodiments of the same inventive concept, in order to facilitate understanding without destroying the inventive concept, each drawing may have a different description of the subtle parts, and specific parts may not be displayed according to the drawings, or may be exaggerated according to the drawings.

[0066] In the following description, the water filtration device of the present invention is described as a simple water purifier as an example. However, the water filtration device of the present invention may represent at least one of a simple water purifier, an under-sink water purifier, a natural filtration water purifier, a gravity filtration water purifier, and a pitcher water purifier.

[0067] Figure 1 : is a perspective view of a water filtration device provided by an embodiment of the present invention. Figure 2 It is shown from Figure 1 The diagram shows the state after the cover is separated. Figure 3 This is an exploded perspective view of a water filter device provided by one embodiment of the present invention. Figure 4 This is an exploded perspective view of the filter unit which is a component of the present invention. Figure 5This is a partial cutaway perspective view of a water filter device provided by one embodiment of the present invention. Figure 6 It is a cross-sectional view of a portion of a water filtration device provided by one embodiment of the present invention, in which a filter unit is installed.

[0068] Typically, in the case of a simple water purifier using gravity filtration, activated carbon is generally used to ensure minimum removal performance and flow rate. However, the present invention has a composite filter structure consisting of at least one pre-filter and at least one post-filter, and is constructed as a flow path structure optimized for gravity filtration.

[0069] The pre-filter has a carbon block made by mixing granular activated carbon and powdered activated carbon, so it can ensure the stability of pollutant removal performance and sufficient flow rate. The post-filter uses electrostatic adsorption (positive charge) material, so it can minimize the generated fine dust and remove bacteria and viruses.

[0070] Reference Figures 1 to 6 The water filter device provided by the present invention includes a water storage container portion 100 , wherein the upper side of the water storage container portion 100 is open to form a first opening 110 and is recessed downward to form a first water storage space 101 inside.

[0071] The first water storage space 101 stores purified water that has passed through the filter unit 300 .

[0072] Furthermore, the water storage container portion 100 may have a jug shape.

[0073] The water storage container portion 100 may be formed with a handle 130 protruding outward on one side, and a drainage groove 120 may be formed on the side opposite to the handle 130. The drainage groove 120 is formed sharply toward the outside so that when the water storage container portion 100 is tilted while holding the handle 130, water in the first water storage space 101 is gathered and flows out.

[0074] In addition, the water filtration device includes a water inlet container portion 200, the upper side of which is open to form a second opening 201 and is recessed downward to form a second water storage space 201 on the inner side. The water inlet container portion 200 is arranged at the inner upper part of the water storage container portion 100.

[0075] In addition, the water filtration device includes a filter unit 300, which is detachably fixed to the water inlet container unit 200. When water supplied to the second water storage space 201 of the water inlet container unit 200 flows into the filter unit 300, the filter unit 300 filters the water and then spits it out into the first water storage space 101.

[0076] The water inlet container 200 is supplied with raw water, and supplies the raw water to the filter 300 .

[0077] In addition, the filter unit 300 includes pre-filters 310a and 310b, and the pre-filters 310a and 310b include: a first filter component 311, which is configured as a hollow tube shape with a hollow portion formed in the center; and a second filter component 312, which is arranged on the inner circumference or outer circumference of the first filter component 311 and is composed of a material different from that of the first filter component 311.

[0078] Therefore, the water supplied to the second water storage space 201 of the water inlet container 200 first flows through the second filter member 312 , is filtered when flowing through the first filter member 311 , and is then discharged into the first water storage space 101 and stored.

[0079] As another example, the water supplied to the second water storage space 201 of the water inlet container 200 may first flow through the first filter component 311 , then be filtered when flowing through the second filter component 312 , and then be discharged into the first water storage space 101 and stored.

[0080] The second filter member 312 may be formed of a hollow sediment nonwoven fabric disposed on the first filter member 311 .

[0081] Furthermore, the precipitate nonwoven fabric may be disposed not only on the inner peripheral surface of the carbon block but also on the outer peripheral surface of the carbon block.

[0082] When the sediment nonwoven fabric is provided as described above, even if water flows backward, fine dust in the water can be filtered, thereby preventing the fine dust from flowing out to the second water storage space 201 side.

[0083] Furthermore, when the sediment nonwoven fabric is provided as described above, fine dust in water can be filtered, thereby improving the problem of fine dust flowing into clean water.

[0084] As another example, the second filter member 312 may include an ion exchange resin disposed in the hollow of the first filter member 311 .

[0085] When the ion exchange resin is provided as described above, calcium, magnesium, and the like can be exchanged for ions, thereby removing hardness substances in water.

[0086] The number of pre-filters 310a and 310b may be one.

[0087] The pre-filters 310a and 310b may be provided in plurality and arranged in series or in parallel.

[0088] The pre-filters 310a and 310b may include: a first pre-filter 310a disposed on one side; and a second pre-filter 310b disposed side by side and spaced apart from the first pre-filter 310a.

[0089] A post-filter 320 is arranged between the first pre-filter 310a and the second pre-filter 310b. The post-filter 320 has an electrostatic adsorption material or an ultrafiltration membrane built in. The water discharged from the first pre-filter 310a and the second pre-filter 310b flows through the post-filter 320 and is then discharged into the first water storage space 101.

[0090] Figure 7 This is a perspective view showing an example of an electrostatic adsorption member built into the first post filter which is a component of the present invention.

[0091] Figure 8 This is a cross-sectional view showing an example of a second post filter which is a component of the present invention.

[0092] Reference Figure 7 An electrostatic adsorption component 321 is built into the post-filter 320 .

[0093] In addition, the water flowing through the pre-filters 310 a and 310 b may flow through the electrostatic adsorption component 321 inside the post-filter 320 and then be discharged into the first water storage space 101 .

[0094] The electrostatic adsorption component 321 may be made of electrostatic adsorption non-woven fabric.

[0095] The electrostatic adsorption component 321 may be made of a positively charged material to adsorb negative charges in water.

[0096] The electrostatic adsorption component 321 may include activated carbon.

[0097] The electrostatic adsorption component 321 can adsorb and remove viruses, bacteria, etc. in water.

[0098] The electrostatic adsorption material 321 may have a hollow tube shape and may be formed with wrinkles along a circumferential direction.

[0099] The electrostatic adsorption material 321 may be formed with a hollow portion 321a, and include a protruding portion 321b protruding outward and a concave portion 321c concave inward.

[0100] When the electrostatic adsorbent 321 is formed with wrinkles as described above, the surface area of the electrostatic adsorbent 321 increases, and viruses, bacteria, and the like in water flowing through the electrostatic adsorbent 321 can be removed more reliably.

[0101] Furthermore, the electrostatic adsorption nonwoven fabric may be formed into a closed curve by folding a rectangular nonwoven fabric and then heat-sealing both end portions in contact with each other.

[0102] In this case, the heat-welded portion may be formed by heat-welding both end portions of the electrostatic adsorption nonwoven fabric.

[0103] Furthermore, the water filter device may further include a second electrostatic adsorption non-woven fabric, wherein the second electrostatic adsorption non-woven fabric is formed in a manner of surrounding an outer periphery of the electrostatic adsorption non-woven fabric.

[0104] In the present invention, the case where the electrostatic adsorption nonwoven fabric is wrinkled is described as an example, but the scope of the present invention is not limited thereto, and the electrostatic adsorption nonwoven fabric may not be wrinkled.

[0105] Furthermore, the electrostatic adsorption nonwoven fabric may have a roll form.

[0106] Also, the electrostatic adsorption nonwoven fabric may be formed as a layer.

[0107] Furthermore, the electrostatic adsorption nonwoven fabric may be formed into multiple layers.

[0108] Furthermore, when the electrostatic adsorption nonwoven fabric is formed into multiple layers, heavy metals in water can be removed more reliably.

[0109] As an example, the electrostatic adsorption non-woven fabric may be composed of anionic electrostatic adsorption non-woven fabric.

[0110] As another example, the electrostatic adsorption nonwoven fabric may be composed of a cationic electrostatic adsorption nonwoven fabric.

[0111] Reference Figure 8 An ultrafiltration membrane 322 may be built into the post-filter 320 , and the water flowing through the pre-filters 310 a and 310 b flows through the ultrafiltration membrane 322 inside the post-filter 320 and is then discharged into the first water storage space 101 .

[0112] Furthermore, the water inlet container portion 200 may be formed with a filter accommodating portion 210 that is recessed downward at the lower portion of the second water storage space 201 , and a discharge port 220 may be formed at the lower end of the filter accommodating portion 210 . The discharge port 220 is open to discharge filtered water into the first water storage space 101 .

[0113] The filter accommodating portion 210 includes a filter accommodating space 202 communicating with the second water storage space 201 .

[0114] The filter accommodating space 202 may be formed to be smaller than the second water storage space 201 .

[0115] Furthermore, the filter unit 300 may include filter cases 330 and 340 . The filter cases 330 and 340 may be inserted into the filter accommodating portion 210 in a vertical direction and then be detachable from the filter accommodating portion 210 .

[0116] The filter housings 330 and 340 may be composed of a lower housing 330 and an upper housing 340 . The lower housing 330 is disposed at the lower side and is recessed downward to form a space 331 . The upper housing 340 covers the upper side of the lower housing 330 .

[0117] In addition, the upper housing 340 may be formed with an extension wall 341 extending downward along the periphery thereof, and the lower end of the extension wall 341 is inserted into and fixed to the upper end of the lower housing 330 .

[0118] Furthermore, the upper housing 340 may also have an extension wall 341 extending downward along the periphery thereof, and the upper end of the lower housing 330 may be inserted into and fixed to the lower end of the extension wall 341 .

[0119] In addition, a first step portion 342 that is recessed from the outer surface toward the inner side can be formed along the periphery at the lower end of the extension wall 341, and a second step portion 332 that is recessed from the inner surface toward the outer side can be formed along the periphery at the upper end of the lower shell 330, and the first step portion 342 is inserted into and fixed to the second step portion 332.

[0120] Furthermore, a gripping portion 345 protruding upward may be formed at the upper end of the upper shell 340 .

[0121] Thus, the user can grip the grip portion 345 to separate the filter portion 300 from the filter housing portion 210 of the water inlet container portion 200 .

[0122] Furthermore, the user can also hold the grip portion 345 and insert the filter portion 300 into the filter receiving portion 210 of the water inlet container portion 200 .

[0123] Furthermore, an inlet 343 may be formed in the upper shell 340 . The inlet 343 is open in the up-down direction so that the water in the second water storage space 201 flows into the inside of the shells 330 and 340 .

[0124] The inlet 343 may be connected to the hollow of the first filter member 311 , and water flowing into the inlet 343 may flow only into the hollow of the first filter member 311 .

[0125] As an example, there may be two pre-filters 310a and 310b, which are arranged on both sides of the post-filter 320. In this case, the inlet 343 may be formed on both sides of the upper shell 340 corresponding to the hollow of the first filter component 311 of each pre-filter 310a and 310b.

[0126] The pre-filters 310 a and 310 b include an upper cover 314 disposed on the upper side of the first filter member 311 and a lower cover 313 disposed on the lower portion of the first filter member 311 .

[0127] Furthermore, the lower cover 313 has an insertion portion 315 formed at the center thereof so as to protrude downward.

[0128] In addition, the lower housing 330 may have an insertion groove 333 formed on the bottom surface thereof, into which the insertion portion 315 is inserted.

[0129] Thus, when the insertion portion 315 is inserted into the insertion groove 333 , the lower cover 313 can be fixed to the lower case 330 .

[0130] Furthermore, an inflow pipe 316 extending upward is formed at the center of the upper cover 314 . The inflow pipe 316 is inserted into the inflow port 343 .

[0131] Therefore, the water flowing into the inlet 343 can flow into the inlet pipe 316 and then into the hollow of the first filter member 311 communicating with the inlet pipe 316 .

[0132] Furthermore, a drain port 334 is formed at the lower end of the lower housing 330 . The drain port 334 is open in the vertical direction and drains water inside the housing 330 downward.

[0133] Furthermore, the water flowing through the post-filter 320 is discharged to the outside of the filter housings 330 and 340 through the discharge port 334 .

[0134] The post-filter 320 includes post-filter housings 323 , 324 , and 325 .

[0135] Based on the state of being installed in the filter housings 330 and 340 , the post-filter housings 323 , 324 and 325 include a first housing 323 disposed on the upper side, a second housing 324 disposed on the lower side, and a third housing 325 forming a side surface.

[0136] At least one communication hole may be formed in the third housing 325 , and the communication hole is open to allow water from the outside to flow into the inside.

[0137] The third housing 325 can also be omitted according to circumstances.

[0138] In addition, a discharge pipe 326 extending downward may be formed in the center of the second shell 324 , and a discharge port 327 may be formed inside the discharge pipe 326 , and water inside the post-filter shells 323 , 324 , and 325 may be discharged to the outside through the discharge port 327 .

[0139] The discharge pipe 326 may be inserted into the discharge port 334 .

[0140] Thus, the water discharged to the discharge pipe 326 can be directly discharged to the outside of the filter cases 330 and 340 through the discharge port 334 .

[0141] In addition, the water discharged through the discharge port 334 may be discharged into the first water storage space 101 through the discharge port 220 formed at the lower end of the filter accommodating portion 210 .

[0142] Furthermore, the upper shell 340 may be formed with a pressing portion 346 extending downward from a central portion, and the lower end of the pressing portion 346 presses the upper end of the first shell 323 to fix it.

[0143] Furthermore, the pressing portion 346 may be hollow, and the first shell 323 may have a raised portion protruding upward at the center. When the pressing portion 346 presses the upper end of the first shell 323 , the raised portion is inserted into the lower end of the pressing portion 346 .

[0144] According to the above structure, when water is supplied to the second water storage space 201 , the water flows in through the inlet 343 and flows into the hollow of the first filter member 311 through the inlet pipe 316 connected to the inlet 343 .

[0145] Furthermore, the water that has transversely passed through the second filter member 312 and the first filter member 311 flows transversely again and flows into the post-filter 320 .

[0146] Furthermore, the water flowing through the post-filter 320 is discharged to the discharge pipe 326 , and is discharged to the outside of the filter cases 330 , 340 through the discharge port 334 connected to the discharge pipe 326 .

[0147] Thereafter, the water is discharged to the bottom of the filter housing 210 through the discharge port 220 and is stored in the first water storage space 101 as purified water.

[0148] By horizontally arranging an electrostatically adsorbable nonwoven fabric, a carbon block, and an ultrafiltration membrane within a filter housing, the present invention simultaneously adsorbs and removes bacteria and viruses that may be present in tap water. Furthermore, by placing the ultrafiltration membrane inside the carbon block, water flowing through the electrostatically adsorbable nonwoven fabric and carbon block passes through the ultrafiltration membrane, which utilizes size exclusion, or physical filtration, to reliably remove carbon particles and particulate matter.

[0149] Furthermore, this horizontal configuration is more conducive to achieving high flow rate and high performance for the following reasons.

[0150] First, water flowing from the upper side to the lower side after entering the filter housings 330 and 340 moves laterally and sequentially passes through the electrostatic adsorption nonwoven fabric, the carbon block, and the ultrafiltration membrane, and then flows downward and leaves the filter housings 330 and 340 .

[0151] That is, in the case of the present invention, water flowing from the upper side to the lower side flows laterally and then flows from the upper side to the lower side.

[0152] Therefore, the flow path structure through which water flows can be simplified, and the flow rate reduction phenomenon that occurs in a complex flow path structure can be improved.

[0153] In addition, since the volume of the electrostatically adsorbed non-woven fabric, carbon block, and ultrafiltration membrane increases, the filtration capacity can be improved.

[0154] That is, according to the present invention, a higher flow rate and performance can be achieved than a filter of the same size.

[0155] The main features of the present invention are the structure of the filter and the flow path structure. The structure of the filter is as follows: two pre-filters 310a and 310b with sediment non-woven fabric and carbon blocks are arranged side by side on both sides, and the water flowing through the pre-filter flows through the post-filter 320 with electrostatic adsorption material and finally flows out.

[0156] In the flow path structure, raw water flows in through the inlets 343 formed on both sides of the upper ends of the filter housings 330 and 340, flows into the hollows of the two carbon blocks 311, flows through the inner sediment non-woven fabric, and then flows through the carbon blocks. Alternatively, raw water flows in through the inlets 343 formed on both sides of the upper ends of the filter housings 330 and 340, flows into the hollows of the two carbon blocks 311, flows through the carbon blocks, and then flows through the outer sediment non-woven fabric.

[0157] Afterwards, the water flows from the outside to the inside of the post-filter 320 located in the middle, passes through the ultrafiltration membrane or the electrostatic adsorption non-woven fabric, and then flows to the bottom.

[0158] Thereafter, the liquid is discharged to the lower side of the filter cases 330 , 340 through the discharge port 334 .

[0159] According to the present invention, by applying a carbon block to a pre-filter, major pollutants such as residual chlorine, VOCs (volatile organic compounds), heavy metals, particulate matter, and turbidity can be removed.

[0160] Furthermore, by applying the sediment nonwoven fabric inside or outside the carbon block, it is possible to prevent fine dust that may be generated in the carbon block from flowing out.

[0161] Furthermore, a plurality of filters are arranged in parallel to ensure sufficient water purification performance and purified water flow rate.

[0162] Furthermore, in order to enhance the hygienic performance of the simple water purifier, an electrostatic adsorption material to which activated carbon capable of removing bacteria and viruses is attached is applied to the post-filter 320 .

[0163] Furthermore, the post-filter 320 may also include an ultrafiltration membrane having a function of physical filtration using pores, instead of the electrostatic adsorption material.

[0164] Therefore, the simple water purifier provided by the present invention can be used not only at home, but also in outdoor activities such as camping and fishing.

[0165] Furthermore, as a modified example, when constructing the filter, the interior of the carbon block may be filled with (anion) ion exchange resin to add a hardness removal function.

[0166] Another important feature of the present invention is the flow path structure. Raw water flows into the hollow of the carbon block and is filtered as it flows to the outside of the carbon block.

[0167] In addition, since the simple water purifier utilizes the characteristics of natural pressure filtration and constructs the flow path structure as simply as possible, it can solve the backflow problem in the gravity filtration method.

[0168] Furthermore, a flow path is realized in which water flows from the inside to the outside of the carbon block, then flows from the outside to the inside of the post-filter, and finally flows out, so that water can flow naturally in the forward direction.

[0169] Physical filtration is performed in a sediment nonwoven fabric included in the prefilter.

[0170] The sediment-removing nonwoven fabric can filter out particulate matter, rust, and suspended matter larger than 3 to 5 μm. Furthermore, it can prevent the outflow of fine dust even when the water flows in the reverse direction.

[0171] Furthermore, adsorption and filtration are performed in a carbon block included in the pre-filter.

[0172] The carbon block can adsorb and remove residual chlorine, volatile organic compounds (VOCs), heavy metals, and particulate matter in the water, improve the turbidity and color of the water, and also adsorb and remove odors.

[0173] And, electrostatic adsorption is performed in the electrostatic adsorption material included in the post filter.

[0174] Through electrostatic adsorption materials, bacteria and viruses in water can be adsorbed and removed.

[0175] And, physical filtration is performed in an ultrafiltration membrane included in the post-filter.

[0176] The ultrafiltration membrane can filter out bacteria and particulate matter larger than 0.2μm in the water.

[0177] Also, ion exchange is performed in the ion exchange resin included in the pre-filter.

[0178] The (cation) exchange resin can remove the main lime substances such as calcium and magnesium in the water through ion exchange, thereby reducing the hardness value of the water.

[0179] Furthermore, in the case of the present invention, the problem of water backflow in the gravity filtration method can be solved by the flow path structure that filters from the hollow of the carbon block to the outside.

[0180] Furthermore, the invention has the following advantages: by accommodating at least three filter components in one filter housing, the filtering capacity can be improved and the filter can be miniaturized; and by lateral arrangement of multiple filter components, the flow path structure can be improved and high flow and high performance can be achieved.

Claims

1. A water filtration device comprising: The water storage container portion is open at the top and recessed downward to form a first water storage space therein; a water inlet container portion, the upper side of which is open and recessed downward to form a second water storage space inside, the water inlet container portion being disposed at an upper inner portion of the container portion; and The filter unit is detachably fixed to the water inlet container unit. When water supplied to the second water storage space of the water inlet container unit flows in, the filter unit filters the water and then discharges the water into the first water storage space. The filter unit includes a pre-filter, and the pre-filter includes: a first filter member configured in a hollow tube shape with a hollow formed in a central portion; and a second filter member disposed in the hollow of the first filter member and made of a material different from that of the first filter member.

2. The water filtration device according to claim 1, wherein: The water flowing into the pre-filter first flows through the second filter component and then flows through the first filter component.

3. The water filtration device according to claim 1, wherein: The first filter member is formed of a carbon block having a hollow shape.

4. The water filtration device according to claim 3, wherein: The second filter member is formed of a hollow sediment nonwoven fabric disposed on the first filter member.

5. The water filtration device according to claim 1, wherein: The pre-filter comprises: A first pre-filter is disposed on one side; and The second pre-filter is arranged side by side and spaced apart from the first pre-filter.

6. The water filtration device according to claim 5, wherein: A post filter is arranged between the first pre filter and the second pre filter, and the post filter has at least one of an electrostatic adsorption material or an ultrafiltration membrane built therein. The water discharged from the first pre-filter and the second pre-filter flows through the post-filter and is then discharged into the first water storage space.

7. The water filtration device according to claim 1, wherein: The filter unit further includes a first post-filter with a built-in electrostatic adsorption component. The water flowing through the pre-filter flows through the first post-filter and is discharged into the first water storage space.

8. The water filtration device according to claim 7, wherein: The electrostatic adsorption material has a hollow tube shape and is formed with wrinkles in a circumferential direction.

9. The water filtration device according to claim 1, wherein: The filter unit also includes a second post-filter with an ultrafiltration membrane built in. The water flowing through the pre-filter flows through the second post-filter and is discharged into the first water storage space.

10. The water filtration device according to claim 1, wherein: The water inlet container portion is formed with a filter accommodating portion that is recessed downward below the second water storage space. A discharge port is formed at a lower end of the filter housing portion, and the discharge port is opened to discharge filtered water into the first water storage space.

11. The water filtration device according to claim 10, wherein: The filter unit includes a filter case that is inserted into the filter accommodation portion in a vertical direction and is detachable from the filter accommodation portion.

12. The water filtration device according to claim 11, wherein: The filter housing is composed of a lower housing and an upper housing. The lower housing is arranged on the lower side and is recessed downward. The upper housing covers the upper side of the lower housing.

13. The water filtration device according to claim 12, wherein: The upper shell is formed with an extension wall extending downward along the periphery. The lower end of the extension wall is inserted into and fixed to the upper end of the lower housing.

14. The water filtration device according to claim 13, wherein: A first step portion is formed at the lower end of the extension wall along the periphery thereof and is recessed from the outer surface toward the inner side. A second step portion is formed on the upper end of the lower shell along the periphery, which is recessed from the inner surface toward the outer side. The first step portion is inserted into the second step portion.

15. The water filtration device according to claim 12, wherein: A gripping portion is formed on the upper end of the upper shell and protrudes upward.

16. The water filtration device according to claim 12, wherein: The upper shell has an inlet formed therein. The inlet is open in a vertical direction so that water in the second water storage space flows into the interior of the shell.

17. The water filtration device according to claim 16, wherein: The inlet is connected to the hollow portion of the first filter member.

18. The water filtration device according to claim 16, wherein: A drain port is formed at the lower end of the lower casing. The drain port is open in the vertical direction and drains water inside the casing downward.

19. The water filtration device according to claim 18, wherein: The water flowing through the post-filter is discharged to the outside of the filter housing through the discharge port.

20. The water filtration device according to any one of claims 1 to 19, wherein: The water filtering device is applicable to at least any one of a simple water purifier, an under-sink water purifier, a natural filtration water purifier, a gravity filtration water purifier, and a pot-type water purifier.

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