Water purifier

Abstract

Provided is a water purifier comprising: a raw-water inlet; a purified-water outlet; a filter medium accommodation part; a filter medium accommodation cap which is attachable to and detachable from the filter medium accommodation part; a hollow-fiber membrane module in which a plurality of hollow-fiber membranes are fixed with a potting material to one end of a cylindrical case; and an adsorbent module filled with an adsorbent. The filter medium accommodation part is equipped with a module fitting which has a cylindrical opening and is for fitting the hollow-fiber membrane module. The hollow-fiber membrane module is equipped with an adsorbent module fitting for fitting the adsorbent module. The adsorbent module is equipped on the outer periphery thereof with a plurality of ribs for center positioning, and is equipped at one end thereof with a rib for height positioning.

Description

water purifier

[0001] The present invention relates to a water purifier that filters tap water in a home kitchen or the like.

[0002] In recent years, water purifiers that purify tap water have become widely used in homes. Water purifiers contain various filter media, such as activated carbon, which removes free residual chlorine, mold odor, and trihalomethanes from tap water, and hollow fiber membranes, which remove turbidity such as iron rust from tap water. Purified water filtered through these filters is safe and delicious, contributing to the health of users.

[0003] In most cases, various types of filter media are filled into the internal space of a removable cartridge for water purifiers. Because the amount of filtered water that a filter media can process is limited, it is common to continue using the water purifier by periodically replacing the cartridge.

[0004] Patent Document 1 proposes a filtration cartridge in which a hollow fiber membrane module is fixed to a container having a raw water inlet and a purified water outlet, and a lid is welded to the opening of the container. This allows for the removal of turbidity such as iron rust from tap water to obtain high-quality purified water.

[0005] However, the container must be able to withstand the pressure of tap water, as it is subjected to the pressure. Various filter media are filled into a thick container, and a thick cap is then welded to it using an ultrasonic welding machine. The cartridges for water purifiers, which must be replaced to continue using the purifier, have the problem of high costs for parts procurement and production.

[0006] To address this issue, Patent Document 2 proposes a water purifier in which a replaceable filter is installed inside a container that is thick enough to withstand tap water pressure. In other words, there is no need for the replaceable filter to be pressure-resistant, and high costs for parts procurement and production processes are not required.

[0007] Japanese Patent Publication No. 2002-210458 Japanese Patent Publication No. 2006-26517

[0008] However, with the technology of Patent Document 2, when the lower end of the filter is inserted into the cylindrical support, the filter may tilt inside the container, causing tap water to flow unevenly throughout the filter. In this case, the filtering performance of the part where the most tap water flows decreases first, resulting in an earlier replacement period.

[0009] Furthermore, the technology of Patent Document 2 had the problem that the lower end of the filter inserted into the cylindrical support part could come off due to vibrations and impacts during use, preventing tap water from flowing through the filter and preventing filtration.

[0010] To provide a low-cost, long-life water purifier that can be used until the filter material is due to be replaced, does not require high costs for parts procurement and production processes to ensure pressure resistance to tap water pressure, and does not cause a water purifier cartridge to tilt in a water purifier container, leading to an early replacement time, or does not become dislodged from the water purifier container, preventing filtration.

[0011] A water purifier that solves the above problems is a water purifier having a raw water inlet, a purified water outlet, a filter media storage section, a filter media storage lid that is detachable from the filter media storage section, a hollow fiber membrane module in which multiple hollow fiber membranes are fixed to one end of a cylindrical case with potting material, and an adsorbent module filled with an adsorbent, wherein the filter media storage section is provided with a module mounting section having a cylindrical opening for mounting the hollow fiber membrane module, the hollow fiber membrane module is provided with an adsorbent module mounting section for mounting the adsorbent module, multiple center alignment ribs are provided on the outer periphery of the adsorbent module, and a height alignment rib is provided at one end of the adsorbent module.

[0012] According to the water purifier of the present invention, when the hollow fiber membrane module and adsorbent module are integrated and attached to the module mounting portion of the filter media storage unit, multiple center alignment ribs on the outer periphery of the adsorbent module prevent tilting in the filter media storage unit. This prevents the filter media from needing to be replaced prematurely, allowing the filter media to be used until its intended replacement time. Furthermore, a height alignment rib is provided at one end of the adsorbent module, preventing the integrated hollow fiber membrane module and adsorbent module from coming off the module mounting portion of the filter media storage unit, preventing users from drinking tap water that has not been filtered.

[0013] FIG. 1 is a longitudinal sectional view of a cartridge for a water purifier according to one embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a faucet-mounted water purifier in which a cartridge for a water purifier according to one embodiment of the present invention is connected to a main body switch. FIG. 3 is a sectional perspective view of a cartridge body of a cartridge for a water purifier according to one embodiment of the present invention. FIG. 4 is a perspective view of an adsorbent module of a cartridge for a water purifier according to one embodiment of the present invention. FIG. 5 is a perspective view of an adsorbent module of a cartridge for a water purifier according to one embodiment of the present invention. FIG. 6 is a perspective view of an adsorbent container of a cartridge for a water purifier according to one embodiment of the present invention. FIG. 7 is a longitudinal sectional view of a cartridge for a water purifier when backwashing a hollow fiber membrane module according to one embodiment of the present invention. FIG. 8 is a perspective view of a cartridge for a water purifier according to another embodiment of the present invention. FIG. 9 is a longitudinal sectional view of a cartridge for a water purifier according to another embodiment of the present invention.

[0014] An embodiment of the present invention will be described with reference to the drawings.

[0015] Fig. 1 is a longitudinal cross-sectional view of a water purifier cartridge according to an embodiment of the present invention. Fig. 2 is a longitudinal cross-sectional view of a faucet-mounted water purifier in which a water purifier cartridge according to an embodiment of the present invention is connected to a main body switch.

[0016] Each of the components constituting the water purifier cartridge 1 will be described.

[0017] The water purifier cartridge 1 comprises a cylindrical cartridge body (filter medium storage section) 2 having an open top and a closed bottom, and a lid (filter medium storage lid) 3 fixed to the open top of the cartridge body 2. The water purifier cartridge 1 houses a hollow fiber membrane module 20 and an adsorbent module 30 in the internal space formed by the cartridge body 2 and the lid 3.

[0018] A bayonet mechanism is used to attach the lid 3 to the cartridge body 2, and the lid 3 can be easily fixed by rotating it 63° to align it with the opening of the cartridge body 2. A screw mechanism may be used instead of the bayonet mechanism. An O-ring 7 is disposed on the cartridge body 2, and is compressed radially by the lid 3, thereby maintaining a liquid-tight seal between the cartridge body 2 and the lid 3.

[0019] 3 is a cross-sectional perspective view of the cartridge body 2 of the water purifier cartridge 1. The cartridge body 2 has a raw water passage 11 on the side near the bottom end and a purified water outlet 12 in the center of the bottom end face. A cylindrical module mounting portion 13 is provided on the inner surface of the lower end of the cartridge body 2, surrounding the purified water outlet 12, into which the end of the hollow fiber membrane module 20 having an opening is fitted. In other words, the module mounting portion 13 has a cylindrical opening and is a member for mounting the hollow fiber membrane module 20. A bayonet mechanism for connecting to the main body switch 4 is provided around the inlet opening of the raw water passage 11.

[0020] The module mounting portion 13 has a first module fitting portion 14 and a second module fitting portion 15 that has a smaller diameter than the first module fitting portion 14 and is closer to the purified water outlet.

[0021] The hollow fiber membrane module 20 comprises a hollow fiber membrane bundle 21, which is a bundle of a predetermined number of hollow fiber membranes bent into an inverted U shape, housed inside a substantially cylindrical case 22. The inner surface of the lower end of the cylindrical case 22, the lower end of the hollow fiber membrane bundle 21, and the lower ends of the hollow fiber membranes are sealed and fixed with a potting material such as polyurethane or epoxy resin. The lower end of the hollow fiber membrane bundle 21 is open and faces the purified water outlet 12. Hydrophilized polysulfone is preferably used as the hollow fiber membrane material. Multiple types of hollow fiber membranes made from different materials may also be combined. Hydrophobic polyethylene or polypropylene hollow fiber membranes can be used to efficiently remove air from the water. While the hollow fiber membrane bundle 21 is bent into an inverted U shape, it may also be a straight hollow fiber membrane bundle whose upper opening is sealed with an adhesive or heat fusion.

[0022] The cylindrical case 22 is made of ABS resin, although AS resin, polystyrene, etc. are also suitable. The vicinity of the outlet end 22b of the cylindrical case 22 is fitted liquid-tight with the second module fitting portion 15. The vicinity of the inlet end (adsorbent module mounting portion) 22a can be fitted with the outlet end 31b of the adsorbent container 31 described below, and can also be fitted liquid-tight with the first module fitting portion 14. A flange portion 23 is provided on the outer periphery near the inlet end (adsorbent module mounting portion) 22a.

[0023] 4 and 5 are perspective views of the adsorbent module 30 of the water purifier cartridge 1. The adsorbent module 30 is composed of a bottomed, substantially cylindrical adsorbent container 31, a substantially disk-shaped adsorbent container lid 32, and granular or powder adsorbent 33 (see FIG. 1). The adsorbent container 31 is open at the top, and the adsorbent container lid 32 is attached to the top opening of the adsorbent container 31. Polyolefin is preferably used as the material for the adsorbent container 31 and the adsorbent container lid 32. Ultrasonic welding of the adsorbent container 31 and the adsorbent container lid 32 is easy and reliable, and is an inexpensive material, so manufacturing costs can be reduced. ABS resin or polystyrene can also be used.

[0024] FIG. 6 is a perspective view of the adsorbent container 31 of the water purifier cartridge 1. A plurality of downstream radial ribs 34 are integrally formed on the bottom surface of the adsorbent container 31, and circular, water-permeable downstream nonwoven fabrics (adsorbent holding members) 35 (see FIG. 1 ) are fixed to the downstream radial ribs 34. As shown in FIG. 5 , a plurality of upstream radial ribs 36 are integrally formed on the adsorbent container lid 32. That is, the adsorbent container lid 32 has a plurality of upstream radial ribs 36, and openings are formed between adjacent upstream radial ribs 36, allowing water to flow through these openings into the adsorbent container 31 to which the adsorbent container lid 32 is attached. As shown in FIG. 1 , a circular, water-permeable upstream nonwoven fabric (adsorbent leakage prevention member) 37 is fixed to the upstream radial ribs 36.

[0025] The downstream nonwoven fabric (adsorbent holding member) 35 and the upstream nonwoven fabric (adsorbent leakage prevention member) 37 function to prevent leakage of the granular adsorbent 33 while allowing the water to be treated to pass through, with mesh openings smaller than the particle size of the adsorbent 33. The upstream nonwoven fabric (adsorbent leakage prevention member) 37 and the downstream nonwoven fabric (adsorbent holding member) 35 are preferably nonwoven fabrics containing polyolefin. The upstream nonwoven fabric (adsorbent leakage prevention member) 37 is fixed to the upstream radial ribs 36 by ultrasonic welding, and the downstream nonwoven fabric (adsorbent holding member) 35 is fixed to the downstream radial ribs 34 by ultrasonic welding. Using the same polyolefin material for both fabrics facilitates and ensures ultrasonic welding. This significantly reduces manufacturing costs compared to a configuration in which a frame with radial ribs is injection molded, and the upstream and downstream nonwoven fabrics are ultrasonically welded to the frame before being fixed to the adsorbent container.

[0026] 1 , the bottom of the adsorbent container 31 has a reduced diameter portion, and the diameter near the outlet end 31b of the adsorbent container 31 is smaller than the inlet end 31a of the adsorbent container 31. However, the presence of spaces 38 formed by the downstream radial ribs 34 prevents the water flow from becoming uneven. That is, the bottom of the adsorbent container 31 has a plurality of downstream radial ribs 34, and spaces 38 communicating the inside and outside of the adsorbent container 31 are formed between adjacent downstream radial ribs 34, allowing water within the adsorbent container 31 to be discharged to the outside of the adsorbent container 31 through the spaces 38. The outlet end 31b of the adsorbent container 31 is fitted into the inlet end (adsorbent module mounting portion) 22a of the cylindrical case of the hollow fiber membrane module 20. That is, the inlet end (adsorbent module mounting portion) 22a is a portion for mounting the adsorbent module 30.

[0027] A plurality of centering ribs 41 are arranged on the outer periphery of the adsorbent container 31 and / or the adsorbent container lid 32 of the adsorbent module 30. The clearance between the inner circumferential surface of the lid 3 and the centering rib 41 is adjusted to 0.05 to 0.3 mm, and both the adsorbent container lid 32 and the centering rib 41 are inclined so that the clearance gradually decreases in the process of tightening the lid 3. Either one may be inclined.

[0028] Meanwhile, a height alignment rib 42 is disposed on the upper surface of the adsorbent container lid 32 of the adsorbent module 30. The clearance between the rear side of the upper surface of the lid body 3 and the height alignment rib 42 is adjusted to 0.2 to 0.5 mm. The height alignment rib may also be provided on the rear side of the upper surface of the lid body 3.

[0029] The adsorbent 33, consisting of granular activated carbon and granular zeolite, is filled in the space between the downstream nonwoven fabric (adsorbent holding member) 35 of the adsorbent container 31 and the upstream nonwoven fabric (adsorbent leakage prevention member) 37 of the adsorbent container lid 32. The activated carbon, made from coconut shells, contains 70% or more particles with particle sizes of 100 to 200 microns and has an iodine adsorption capacity of 1200 mg / g or more. This allows for a high adsorption capacity for organic matter in tap water while ensuring a sufficient purified water flow rate. Furthermore, reducing the particle size increases the surface area, thereby enhancing the adsorption capacity and ion exchange capacity.

[0030] The zeolite used is one that selectively adsorbs lead and has a particle size of 100 to 200 microns. Titanosilicate, which has a similar function, may also be used instead of zeolite.

[0031] In the manufacturing process, the hollow fiber membrane module 20 and the adsorbent module 30 are assembled in series and erected. During this process, the hollow fiber membrane module 20 or the adsorbent module 30 may become tilted, or the adsorbent module 30 may not be properly fitted into the hollow fiber membrane module 20, resulting in the adsorbent module 30 being too high. Even in such cases, the center alignment rib 41 and the height alignment rib 42 of the water purifier cartridge 1 come into contact with the inner surface of the lid 3 during the process of fitting and tightening the lid 3, thereby correcting the tilted or overly high position and adjusting it to its original position. The same applies when a user who has purchased a water purifier replaces the water purifier cartridge. Even if a user who is unfamiliar with assembly fails to accurately assemble and erect the hollow fiber membrane module 20 and the adsorbent module 30, the position is corrected to its original position during the process of fitting and tightening the lid 3, thereby enabling the water purifier to perform at its best.

[0032] The use of the water purifier cartridge 1 configured as above will now be described.

[0033] Raw water (tap water) entering from the raw water inlet 8 of the main body switch 4 flows into the inside of the water purifier cartridge 1 through the raw water passage 11, and is guided into the cylindrical gap 5 secured by the center alignment rib 41, where it rises without deviation. The raw water (tap water) is then guided into the disk-shaped gap 6 secured by the height alignment rib 42, where it changes direction without deviation.

[0034] The raw water passes through the upstream nonwoven fabric (adsorbent leakage prevention member) 37 of the adsorbent container lid 32 and flows into the adsorbent module 30. The water flows evenly and comes into contact with the granular activated carbon and granular zeolite packed in a roughly cylindrical shape, removing free residual chlorine, mold odor, trihalomethanes, lead, and other contaminants from the raw water. The water then passes through the downstream nonwoven fabric (adsorbent holding member) 35 of the adsorbent container 31, contracts in the space 38 formed by the multiple downstream radial ribs 34, and exits the adsorbent container 31 from the outlet end 31b. The water then flows into the hollow fiber membrane module 20 through the inlet end (adsorbent module mounting portion) 22a of the cylindrical case. The hollow fiber membrane bundle 21 then removes suspended solids, turning the water into purified water, which is then discharged from the purified water outlet 12.

[0035] Since the amount of filtered water that can be treated by a filter medium is limited, users must periodically replace the filter medium while continuing to use the water purifier. The replacement of the hollow fiber membrane module 20 and adsorbent module 30, which are the filter medium, will now be described.

[0036] The lid 3, which is fixed to the upper opening of the cartridge body 2 of the water purifier cartridge 1 by a bayonet mechanism, is removed. Next, the adsorbent module 30 is removed from the hollow fiber membrane module 20, and then the hollow fiber membrane module 20 is removed from the second module fitting portion 15 of the module mounting portion 13 of the cartridge body 2. Next, the outlet end 22b of a new hollow fiber membrane module 20 is fitted into the second module fitting portion 15. Next, the outlet end 31b of the new adsorbent module 30 is fitted into the inlet end (adsorbent module mounting portion) 22a of the hollow fiber membrane module 20. Both modules can be fitted manually, and the dimensions are adjusted to prevent water leakage.

[0037] Next, the lid 3 is placed on the cartridge body 2 and tightened. At this time, the hollow fiber membrane module 20 or the adsorbent module 30 may become tilted, or the adsorbent module 30 may not be properly fitted into the hollow fiber membrane module 20, causing the adsorbent module 30 to be higher than a predetermined height. Even in such cases, in the water purifier cartridge 1, the center alignment rib 41 and height alignment rib 42 come into contact with the inner surface of the lid 3 during the process of placing the lid 3 on the cartridge body 2 and tightening it, thereby correcting the tilted or excessively high state and adjusting it to its original position.

[0038] When a water faucet is opened and raw water (tap water) flows into the raw water passage 11 of the water purifier cartridge 1, the air inside the water purifier cartridge 1 is pushed out and purified water is then discharged from the purified water outlet 12.

[0039] Next, backwashing of the hollow fiber membrane module 20 will be described. Figure 7 is a longitudinal cross-sectional view of a water purifier cartridge when backwashing a hollow fiber membrane module. The hollow fiber membrane bundle 21 removes turbidity from raw water (tap water) to produce purified water, which is then discharged from the purified water outlet 12. However, turbidity gradually accumulates in the hollow fiber membrane bundle 21, increasing pressure loss and reducing the flow rate of purified water. When the flow rate reduction becomes significant, the accumulated turbidity can be flushed out (backwashed) by flowing tap water from the outlet end 22b of the hollow fiber membrane module 20 to the inlet end (adsorbent module mounting portion) 22a, thereby reducing the pressure loss. The turbidity accumulated on the outer surface of the hollow fiber membranes does not contaminate the adsorbent activated carbon.

[0040] The cover 3, which is secured to the upper opening of the cartridge body 2 of the water purifier cartridge 1 by a bayonet mechanism, is removed. Next, the adsorbent module 30 is removed from the hollow fiber membrane module 20, and then the hollow fiber membrane module 20 is removed from the second module fitting portion 15 of the module mounting portion 13 of the cartridge body 2. The removed hollow fiber membrane module 20 is turned upside down, and the inlet end (adsorbent module mounting portion) 22a of the hollow fiber membrane module 20 is attached to the first module fitting portion 14 of the module mounting portion 13. Because the first module fitting portion 14 has a larger diameter than the second module fitting portion 15 and is farther from the purified water outlet 12, the mounting position of the hollow fiber membrane module 20 during backwashing is necessarily higher than the mounting position during use. The flange portion 23 on the outer periphery near the inlet end (adsorbent module mounting portion) 22a abuts against the upper end surface of the module mounting portion 13, accurately determining the mounting position of the hollow fiber membrane module.

[0041] Without attaching the adsorbent module 30, the lid 3 is fixed to the upper opening of the cartridge body 2, and then the water faucet is opened to allow raw water (tap water) to flow through the raw water passage 11 of the water purifier cartridge 1. Then, the raw water flows from the outlet end 22b of the hollow fiber membrane module 20 in the direction of the inlet end (adsorbent module mounting portion) 22a, and turbidity that has accumulated in the hollow fiber membrane module 20 is discharged from the purified water outlet 12. By turning the hollow fiber membrane module 20 upside down in this way, backwashing can be easily performed, and there is no need to form a flow path for obtaining purified water and a flow path for backwashing, which allows the cost of manufacturing the water purifier to be kept low.

[0042] When the inlet end (adsorbent module mounting portion) 22a of the hollow fiber membrane module 20 is attached to the first module fitting portion 14 of the module mounting portion 13, the mounting position of the hollow fiber membrane module 20 during backwashing is necessarily higher than the mounting position during use. If the adsorbent module 30 is mistakenly attached to the outlet end 22b of the hollow fiber membrane module 20, the mounting position of the adsorbent module 30 will also be higher than during use, making it impossible to tighten the lid 3 to the cartridge body 2. In other words, it is possible to prevent a user from accidentally using the device as a water purifier while in the backwashing state and drinking turbidity that has accumulated on the outer surface of the hollow fiber membrane.

[0043] As shown in the perspective view of Figure 8 and the longitudinal cross-sectional view of Figure 9, an air vent mechanism 51 is provided in the lid body 3, and when raw water (tap water) is introduced from the raw water passage 11, the air vent mechanism 51 is opened to vent the air inside the lid body 3, thereby eliminating the time required to push out the air and allowing for efficient backwashing.

[0044] Example 1 The adsorbent module was composed of a substantially cylindrical adsorbent container with a bottom, a substantially disk-shaped adsorbent container lid, and granular or powdery adsorbent.

[0045] The adsorbent container and the adsorbent container lid were provided with a plurality of centering ribs on their outer peripheries. The clearance between the inner peripheral surface of the lid and the centering ribs was adjusted to 0.05 mm, and the adsorbent container lid and the centering ribs were also provided with a 1° inclination so that the clearance would gradually decrease as the lid was tightened.

[0046] Meanwhile, a height alignment rib was provided on the top surface of the adsorbent container lid of the adsorbent module. The clearance between the back side of the top surface of the lid and the height alignment rib was adjusted to 0.5 mm.

[0047] The hollow fiber membrane module and adsorbent module were intentionally tilted, and the adsorbent module was intentionally insufficiently fitted into the hollow fiber membrane module, and the lid was then placed on the cartridge body and tightened. As a result, the center alignment rib and height alignment rib came into contact with the inner surface of the lid, correcting the tilted and excessively high state and bringing it into the correct position.

[0048] When raw water (tap water) was passed through this condition, the raw water (tap water) entering from the raw water inlet was guided into the cylindrical gap secured by the center alignment rib, rising without deviation, and then guided into the disk-shaped gap secured by the height alignment rib, changing direction without deviation. This prevented the filter media from needing to be replaced earlier, and allowed it to be used until its intended replacement date.

[0049] Comparative Example 1 A water purifier cartridge similar to that described above was produced, except that no centering rib was provided on the outer periphery of the adsorbent container, and no height-aligning rib was provided on the outer periphery of the adsorbent container lid.

[0050] The hollow fiber membrane module and adsorbent module were intentionally tilted, and the adsorbent module was intentionally insufficiently fitted into the hollow fiber membrane module. When the lid was then placed on the cartridge body and tightened, the tilted and excessively high positions remained.

[0051] When raw water (tap water) was passed through the filter in this state, the raw water (tap water) that entered through the raw water inlet rose unevenly through the cylindrical gaps of different widths and flowed unevenly through the disk-shaped gaps of different widths. This caused the filter media to need to be replaced much earlier, and the filter media could not be used until its intended replacement date.

[0052] Although various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications or alterations within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present invention. Furthermore, the components of the above-described embodiments may be combined in any manner without departing from the spirit of the invention.

[0053] This application is based on a Japanese patent application (Patent Application No. 2024-033508) filed on March 6, 2024, the contents of which are incorporated herein by reference.

[0054] DESCRIPTION OF SYMBOLS 1 Water purifier cartridge 2 Cartridge body (filter medium storage section) 3 Lid body (filter medium storage lid) 4 Body switch 5 Cylindrical gap 6 Disk-shaped gap 7 O-ring 8 Raw water inlet 11 Raw water passage 12 Purified water outlet 13 Module mounting section 14 First module fitting section 15 Second module fitting section 20 Hollow fiber membrane module 21 Hollow fiber membrane bundle 22 Cylindrical case 22a Inlet end (adsorbent module mounting section) 22b Outlet end 23 Flange section 30 Adsorbent module 31 Adsorbent container 31a Inlet end 31b Outlet end 32 Adsorbent container lid 33 Adsorbent 34 Downstream radial rib 35 Downstream nonwoven fabric (adsorbent holding member) 36 Upstream radial rib 37 Upstream nonwoven fabric (adsorbent leakage prevention member) 38 Space 41 Center alignment rib 42 Height alignment rib 51 Air vent mechanism

Claims

1. A water purifier having a raw water inlet, a purified water outlet, a filter media storage section, a filter media storage cover that is detachable from the filter media storage section, a hollow fiber membrane module in which a plurality of hollow fiber membranes are fixed to one end of a cylindrical case with a potting material, and an adsorbent module filled with an adsorbent, wherein the filter media storage section is provided with a module mounting section having a cylindrical opening for mounting the hollow fiber membrane module, the hollow fiber membrane module is provided with an adsorbent module mounting section for mounting the adsorbent module, a plurality of center alignment ribs are provided on the outer periphery of the adsorbent module, and a height alignment rib is provided at one end of the adsorbent module.

2. The water purifier of claim 1, wherein the plurality of center alignment ribs and the height alignment ribs are configured to abut against the inner surface of the filter media storage lid when the hollow fiber membrane module and the adsorbent module are stored in the internal space formed by the filter media storage section and the filter media storage lid.

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