KR100614894B1 - Cartridge for water purifier - Google Patents

Abstract

In the water purification cartridge using the filter medium and the hollow fiber membrane, the filtration performance by the hollow fiber membrane is sufficiently exhibited to improve the water quality, and the life of the hollow fiber membrane is also extended. The filter medium accommodating part which accommodates a filter medium is arrange | positioned at the tap water supply side inside a case, and the hollow fiber membrane accommodating part which accommodates a hollow fiber membrane is arrange | positioned at the purified water discharge part side. A filter medium containing a filter medium container having an opening for water inflow on the outer circumferential wall, and a filter medium containing an inlet of water in the outer circumference and having an inlet of water at the outer circumference thereof as an outlet of water. A filler is formed between the inner container of the storage container, the filter medium filled between the outer container of the filter medium and the inner container of the filter medium, and is provided with a filler plate for diffusing outflow water from the outlet near the outlet of the inner container of the filter medium.

Description

Clean water cartridge {CARTRIDGE FOR WATER PURIFIER}

1 is a cross-sectional view showing the configuration of a water purification cartridge according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view showing the construction of a water purification cartridge according to the embodiment.

Fig. 3 is a sectional view showing the structure of a conventional water purification cartridge.

The present invention relates to a water purification cartridge capable of removing foreign substances, residual chlorine, trihalomethane, soluble lead, and the like contained in tap water.

In general, river water and groundwater are used as a source of tap water, but in order to supply safe tap water to homes and businesses, water purification plants in various locations have chlorine or the like. Various chemicals are added and water treatment is performed.

In recent years, since the water quality of river water and groundwater, which is a source of water, has deteriorated, in order to prevent the water quality of tap water supplied from each water purification plant, a large amount of chlorine must be added. For this reason, especially in cities, the city suffers from odors such as moldy odor and odor of chlorine.

In order to remove odors from tap water, water purifiers have been widely used in homes and businesses, and such water purifiers are generally a combination of activated carbon and hollow fiber membranes. Activated carbon removes mold odors and chlorine odors, and hollow fiber membranes remove particulate matter such as foreign substances. In addition, the hollow fiber membrane also serves to remove various bacteria generated in the activated carbon portion.

In addition, in recent years, not only malodors and foreign substances in tap water, but also trihalomethane, soluble lead, etc. contained in trace amounts in tap water have become a problem, and the water purification device is required to remove more substances. Activated carbon has the effect of removing trihalomethane contained in tap water, but it has little effect of removing soluble lead and ceramic such as ion exchange resin or zeolite to remove soluble lead. (ceramics) is required.

For example, Japanese Patent Application Laid-Open No. 2001-353486 proposes a water purification cartridge capable of effectively utilizing the internal volume in order to increase the use efficiency of filter elements or filter mediums such as activated carbon, ion exchange resins, ceramics, and the like and to downsize. have. 3 shows a configuration of a conventional water purification cartridge 1 'of this type.

As shown in Fig. 3, the purified water cartridge 1 'is composed of a filter medium accommodating portion 2 and a hollow fiber membrane accommodating portion 3, and water is filtered through the filter medium accommodating portion 2 as indicated by arrows in the figure. From the hollow fiber membrane housing 3. In the filter medium accommodating part 2, the filter medium accommodating container outer cylinder 6 provided with the opening 5 for inflow of water in the outer peripheral wall is accommodated. In addition, the hollow fiber membrane 4 is accommodated in the hollow fiber membrane accommodation part 3. At the center of the filter medium container outer cylinder 6, a filter medium container inner cylinder 9 having a water inlet 7 formed at the outer circumferential portion and a water outlet 8 formed at the downstream end is mounted. ) And a filter medium 10 are filled between the filter medium container 9. Water flowing from the tap water supply part 11 provided at one end (lower drawing) of the filter medium accommodating part 2 flows into the interior from the opening 5 of the outer circumferential wall of the filter medium accommodating cylinder 6 and is filtered through the filter medium 10. And flows into the inside of the filter medium container 9 from the inlet 7 of the outer periphery of the filter medium container 9, and is indicated by arrow A from the outlet 8 of the filter medium container 9. Is discharged in the direction, and flows into the hollow fiber membrane 4.

By the way, according to the structure of the said conventional water purification cartridge 1 ', the water discharged from the outflow port 8 of the inner cylinder 9 of a filter medium storage container will flow in locally to the center part of the hollow fiber membrane 4, There is a problem that the entire filter medium surface of the hollow fiber membrane 4 cannot be effectively used. In addition, when the inner diameter of the inner container of the filter medium container 9 is small, the flow rate of the water discharged from the outlet 8 of the inner container 9 of the filter medium container 9 becomes faster, and the central portion of the hollow fiber membrane 4 into which the water directly flows There is also a possibility of damaging and shortening the life of the hollow fiber membrane (4).

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and provides a water purification cartridge capable of sufficiently exhibiting filtration performance by hollow fiber membranes and improving water quality, and at the same time, extending the life of the hollow fiber membranes. For the purpose of

For the above purpose, the water purification cartridge according to one aspect of the present invention is a water purification cartridge in which a filter medium storage unit for housing the filter medium is disposed on the tap water supply side inside the case, and a hollow fiber membrane storage unit for housing the hollow fiber membranes on the purified water discharge side. To

The filter medium container includes an outer cylinder of the filter medium container having an opening for inflow of water on an outer circumferential wall, and is fitted in a substantially central portion of the outer cylinder of the filter medium container, and has an inlet for water in the outer circumference thereof, and the end of the hollow fiber membrane container side is an outlet of water. It consists of a filter medium filled between the inner cylinder of the filter medium container, the outer cylinder of the filter medium container and the inner cylinder of the filter medium container,

In the vicinity of the outlet of the inner cylinder of the filter medium storage container, a filler plate for diffusing the effluent from the outlet is provided.

By such a configuration, the effluent from the inner cylinder of the filter medium storage container can be prevented from being locally discharged to the hollow fiber membrane by the filler plate, and it is possible to effectively use approximately the entire surface of the filtration surface of the hollow fiber membrane. Do. Therefore, the performance according to a hollow fiber membrane is fully exhibited, and water quality can be improved. In addition, even when the flow rate of the outflow water from the outer cylinder of the filter medium storage container increases, the life of the hollow fiber membrane can be extended without fear of damaging the hollow fiber membrane due to the water flow diffusion effect by the filler plate.

Example

Hereinafter, a water purification cartridge according to an embodiment of the present invention will be described with reference to the drawings. As shown in Figs. 1 and 2, the water purification cartridge 1 according to the present embodiment has a number of hollow fiber membranes accommodating the filter medium accommodating portion 2 and the hollow fiber membranes 4 accommodating the filter medium 10. With the payment 3, the main body is comprised.

The upper part of the hollow fiber membrane accommodating part 3 is covered with the upper cover 18. As shown in FIG. The upper cover 18 is provided with a purified water discharge portion 12 on the downstream side of the flow of water with respect to the hollow fiber membrane 4. By fitting the upper edge of the hollow fiber membrane storage portion 3 to the outer circumference of the lower edge of the upper cover 18, and ultrasonically welding the joint portion 21, the upper cover 18 and the hollow fiber membrane storage portion ( 3) Water tightness between them is secured.

In the filter medium accommodating part 2, the filter medium accommodating container outer cylinder 6 which has the opening 5 for inflow of water in the outer peripheral wall is loaded. The inlet 7 of water is formed in the outer cylinder 6 of the filter medium container 6, and the inner cylinder 9 of the filter medium container 9 in which the outlet 8 of water is formed in the downstream end part is fitted. The filter medium 10 is filled between the filter medium container 6 and the filter medium container 9.

The filter medium 10 is composed of granular materials such as activated carbon, ion exchange resins, ceramics, etc., and has an effect of filtering impurities such as residual chlorine, trihalomethane, and soluble lead in tap water. The hollow fiber membrane 4 has a function of purifying tap water by filtering fine particles such as foreign matter and iron rust.

The outer periphery of the filter medium container outer cylinder 6 is composed of a lattice rib 23 and a mesh 24 held on the rib 23. Similarly, the outer periphery of the inner cylinder 9 of the filter medium storage container is composed of a lattice rib 25 and a mesh 26 held by the rib 25. These meshes 24 and 26 have openings finer than the particle size of the filter medium 10, and it is possible to allow water to pass while maintaining the filter medium 10. FIG. The filter medium container 6 and the filter medium container 9 are arranged concentrically so that the moving distance of the water flowing from the filter medium container 6 to the filter medium container 9 is even.

The filter medium container outer cylinder 6 is housed in the lower case 19 constituting the filter medium container 2. The tap water supply part 11 is formed in the bottom part of the lower case 19 in the upstream of the flow of water rather than the filter medium container outer cylinder 6. The lower edge of the hollow fiber membrane storage portion 3 is fitted to the upper edge of the lower case 19, and the lower case 19 and the hollow fiber membrane storage portion 3 are ultrasonically welded to the joint portion 20. Watertightness between) is secured. The joining portions 20 and 21 are not limited to ultrasonic welding but may be, for example, joining with screws, joining with a sealing material, or the like.

The opening end of the filter medium container 6 is closed by a disk-shaped press cover 15. The press cover 15 presses the filter medium 10 through a cap. At the center of the press cover 15, a dome-shaped filler plate 13 is integrally formed. The filler plate 13 faces the outlet port 8 of the filter medium container inner cylinder 9, and an end portion of the filter medium container inner cylinder 9 side of the dome-shaped filler plate 13 has an outlet port of the filter medium container inner cylinder 9. It is fitted to the outer circumference of (8). A granular part 15a is formed in the outer peripheral part of the press cover 15, and the upper end surface of the granular part 15a is in contact with the lower edge of the hollow fiber membrane accommodating part 3. As mentioned above, the ultrasonic wave melting of the junction part 20 of the hollow fiber membrane accommodating part 3 of the lower case 19 can prevent the floating cover 15 from floating. Moreover, the outer peripheral part of the press cover 15 is sealed by the sealing material 27 in the part in which the inner diameter of the lower case 19 is maximized. By this sealing material 27, the water supplied is prevented from flowing into the hollow fiber membrane 4 from the outer periphery of the outer cylinder 6 of the filter medium storage container.

As shown in Fig. 2, four horizontal holes 28 'are formed in the outer circumferential wall of the domed filler plate 13, for example. In addition, as shown in Fig. 1, the lower end portion of the filler plate 13 has a larger diameter than the filler plate 13 and a flange portion engaged with the upper end of the outer peripheral portion of the outlet 8 of the filter medium container 9. (28) is integrally formed, and the cylinder part 29 inserted along the inner peripheral surface of the filter medium storage container inner cylinder 9 outlet 8 is integrally formed in the lower surface of the flange part 28. As shown in FIG. In this embodiment, as shown in Fig. 1, the height of the filling plate 13 and the height of the granular portion 15a of the outer circumference of the press cover 15 are approximately the same height. Thereby, the filling plate 13 is contained in the range of the height dimension H of the press cover 15. As shown in FIG.

Moreover, in the periphery of the filling plate 13 on the opposing surface of the press cover 15 with the hollow fiber membrane 4, a plurality (for example) for rectifying radially the water diffused by the filling plate 13 Six rectifying ribs 14 are formed radially with the filling plate 13 as the center. Moreover, the nonwoven fabric 17 is arrange | positioned in the flow path upstream rather than the hollow fiber membrane 4 over the whole flow path.

In Fig. 1, the arrow indicated by the dotted line indicates the flow of water. The water flowing in from the tap water supply part 11 flows into the inside of the filter medium container 6 from the outer circumferential wall of the filter medium container 6, passes through the filter medium 10, and the filter medium container 9 Flows out from the outer circumferential portion of the filter container and flows out in the vertical direction from the outlet 8 of the inner container 9 of the filter medium container. Since the filling plate 13 is provided so as to face the outlet 8 of the inner container 9 of the filter medium storage container 9, the outflow from the outlet 8 collides with the filling plate 13, and the flow thereof is in the horizontal direction. Change. Then, it flows out from the horizontal hole 28 'formed in the outer circumferential wall of the filler plate 13 to the side opposite to the hollow fiber membrane 4 of the press cover 15. The water flowing out from the horizontal hole 28 'is rectified by the rectifying rib 14 formed radially, and spreads over almost the whole of the opposing surface with the hollow fiber membrane 4 of the press cover 15. As shown in FIG. The water diffused from the filling plate 13 passes through the nonwoven fabric 17 again and is rectified at that time. The water rectified by passing through the nonwoven fabric 17 flows uniformly into almost the entire hollow fiber membrane 4. Since the fine component from the filter medium 10, such as activated carbon contained in water, is trapped by the nonwoven fabric 17, it is possible to improve the utilization efficiency of the hollow fiber membrane 4 and to prevent the blockage at an early stage. have.

Thus, since the filling plate 13 is installed so as to oppose the outlet 8 of the inner container 9 of the filter medium container 9, the outflow from the outlet 8 is diffused by the filling plate 13, and the hollow fiber membrane 4 There is no local inflow to As a result, it becomes possible to utilize the whole filtration surface of the hollow fiber membrane 4 uniformly and effectively simultaneously, and the performance by the hollow fiber membrane 4 is fully exhibited, and water quality can be improved. In particular, even when the inner diameter of the filter medium container 9 is made small, since the flow rate of the outflow water from the filter medium container 9 can be slowed down, there is no fear of damaging the hollow fiber membrane 4. By narrowing the inner cylinder 9 of the filter medium container, the volume of the filter medium 10 can be increased, and as a result, the life of the hollow fiber membrane 4 can be extended.

In addition, since the filling plate 13 is integrally formed by effectively using the press cover 15 for pressing the filter medium 10, an increase in the number of parts can be prevented. Moreover, the water purification cartridge 1 is made to include the filling plate 13 in the range of the height dimension H of the press cover 15 using the space of the press cover 15 of the filter medium container 6 outer cylinder 6 effectively. ) Can be prevented from increasing in size. In addition, while the flange portion 28 of the filler plate 13 is engaged with the upper end of the outer circumferential portion of the outlet 8 of the filter media container inner cylinder 9, the cylinder 29 of the filler plate 13 is connected to the filter media container inner cylinder. Since it is inserted along the inner circumferential surface of the outlet port 8 of (9), the positioning of the filling plate 13 with respect to the outlet port 8 of the filter medium container inner cylinder 9 is simple, and the assembly workability is ensured. Improve.

In addition, the rectifying rib 14 is integrally formed by using the press cover 15 for pressing the filter medium 10, thereby preventing the increase in the number of parts and at the same time preventing the enlargement of the water purification cartridge 1, The effect of rectifying the inflow of the hollow fiber membrane 4 is obtained by (14), and as a result, the utilization efficiency of the hollow fiber membrane 4 can be raised.

Moreover, the upper edge of the lower case 19 of the filter medium accommodating part 2 is protruded in the shape of a step toward the outer side, and the lower end of the hollow fiber membrane accommodating part 3 is attached to the upper case 31 of this step part 30. Since the frame is configured to be accommodated, the inner diameter dimension D of the lower case 19 and the inner diameter dimension E of the upper case 31 are substantially the same (D ≒ E). As a result, as compared with the conventional example shown in FIG. 3, the inner volume of the filter medium container 6 can be enlarged.

Incidentally, in the conventional example shown in Fig. 3, since the upper case of the hollow fiber membrane housing 3 is fitted to the outer circumference of the lower case of the filter medium housing 2 by a screw or the like, The inner diameter dimension D 'is smaller than the inner diameter dimension E of the hollow fiber membrane housing 3 (D' < E). On the other hand, in this embodiment, as shown in Fig. 1, the outer diameter of the filter medium container 6 by the thickness of the upper case 31 of the hollow fiber membrane housing 3 by the step portion 30 Since the dimension can be enlarged, it is possible to enlarge the inner volume of the filter medium container outer cylinder 6. In addition, since the thickness of the upper case 31 of the hollow fiber membrane accommodating part 3 and the lower case 19 of the filter medium accommodating part 2 is kept substantially constant, when the case is joined by applying vibration of ultrasonic welding, Strength can be secured and the joining force can fully be raised.

As described above, according to the water purification cartridge 1 according to the present embodiment, the volume of the filter medium 10 can be enlarged by increasing the storage space of the filter medium storage container outer cylinder 6 while being almost the same size as a conventional water purification cartridge. At the same time, the utilization efficiency of the hollow fiber membrane 4 can be improved, and premature clogging can be prevented. By using this effect, even if the volume of the filter medium 10 and the hollow fiber membrane 4 is slightly reduced, it is possible to extend the service life while maintaining the water purification function equivalent to or higher than that of the conventional water purification cartridge. Therefore, the purified water cartridge 1 can be made smaller in size than the conventional one.

In the above embodiment, the dome-shaped filler plate 13 is integrally formed at the center of the press cover 15 of the filter medium container outer cylinder 6, but is not limited to this configuration and is formed separately. The filling plate 13 may be fitted into a hole formed in the center portion of the press cover 15. In addition, the filler plate 13 does not necessarily need to be a dome shape, and other shapes may be sufficient as it.

The present application is based on Japanese Patent Application No. 2004-024736, the contents of which must be incorporated into the present invention by referring to the specification and drawings of the patent application.

In addition, although this invention is described fully by the Example with reference to the accompanying drawings, it is clear for those skilled in the art that various changes and a deformation | transformation are possible. In addition, such changes and modifications are to be interpreted as being included in the scope of the present invention, without departing from the scope of the present invention.

As described above, according to the present invention, the effluent from the inner cylinder of the filter medium container can be prevented from being locally discharged to the hollow fiber membrane by the filler plate, and the entire surface of the filtration surface of the hollow fiber membrane can be prevented. It is possible to use effectively. Therefore, the performance according to a hollow fiber membrane is fully exhibited, and water quality can be improved.

In addition, even when the flow velocity of the outflow water from the outer cylinder of the filter medium storage container increases, the life of the hollow fiber membrane can be extended without damaging the hollow fiber membrane due to the water flow diffusion effect by the filler plate.

Claims (9)

In the water purification cartridge in which the filter medium storage part which accommodates a filter medium is arrange | positioned in the tap water supply side inside a case, and the hollow fiber membrane storage part which accommodates a hollow fiber membrane in the purified water discharge part side is provided, The filter medium container includes an outer cylinder of the filter medium container having an opening for inflow of water on an outer circumferential wall, and is fitted in a substantially central portion of the outer cylinder of the filter medium container, and has an inlet for water in the outer circumference thereof, and the end of the hollow fiber membrane container side is an outlet of water. It consists of a filter medium filled between the inner cylinder of the filter medium container, the outer cylinder of the filter medium container and the inner cylinder of the filter medium container, A water purification cartridge is provided in the vicinity of an outlet of the inner cylinder of the filter medium storage container, and is provided with a filling plate for diffusing the effluent from the outlet. The method of claim 1, The filling plate is provided with a water purification cartridge, which is provided to face an outlet of the inner cylinder of the filter medium container. The method of claim 2, The filling plate has a dome shape, and the water purification cartridge is formed with an opening for allowing water to flow out of the outer circumferential wall thereof. The method according to any one of claims 1 to 3, A water purification cartridge comprising a rectifying rib for rectifying water diffused by the filler plate. The method according to any one of claims 1 to 3, The filler plate is integrally formed in a press cover for pressing the filter medium, covering the opening between the filter medium container outer cylinder and the filter medium container inner cylinder. The method of claim 5, A water purification cartridge, characterized in that a granular portion is formed on the outer circumferential portion of the press cover, and the filler plate enters the range of the height dimension of the press cover. The method of claim 4, wherein The rectifying rib is formed radially on a surface of the pressing cover that faces the hollow fiber membrane receiving portion. The method according to any one of claims 1 to 3, A water purification cartridge, wherein a nonwoven fabric is provided at a channel downstream from the filler plate of the flow of water diffused by the filler plate and upstream of the hollow fiber membrane. The method of claim 4, wherein A water purification cartridge, wherein a nonwoven fabric is provided at a channel downstream from the filler plate of the flow of water diffused by the filler plate and upstream of the hollow fiber membrane.

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