JP2010214226A - Filter member and water purification cartridge with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a filter member which can achieve long life, and a water purification cartridge with the filter member. <P>SOLUTION: A porous body 11 includes a first passage 15 and a second passage 16, and the first passage 15 is disposed at a position where either the first passage 15 or the second passage 16 is adjacent to the second passage 16, whereby the decrease of the discharge amount due to clogging is inhibited to lengthen the life of the filter member 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filtering member and a water purification cartridge including the filtering member.

  Conventionally, as a filtering member, a continuous continuous flow passage of a porous filter in which a large number of flow passages communicate with each other is sealed at one end face, and the remaining flow passage is sealed at the other end face. Forming a flow passage opened on the inflow side and a flow passage opened on the outflow side, and passing the water flowing into the flow passage opened on the inflow side through the base of the porous filter into the flow passage opened on the outflow side. What is made to flow in is known (for example, refer patent document 1).

JP 2003-080041 A

  However, in the above conventional technique, the flow passages that are continuously adjacent to each other in a linear shape are sealed at one end surface, and the water in the flow passage that is open to the inflow side of the porous filter base is directed to the outflow side. Since the ratio of the portion that can be sent to the open flow passage is low, there is a possibility that the discharge amount may be reduced early due to clogging, and it has been difficult to extend the life of the porous filter.

  Then, an object of this invention is to obtain the filtration member which can aim at lifetime improvement, and a water purification cartridge provided with the same.

  The invention according to claim 1 is a filtration member in which a flow path is provided in a porous main body to form an inflow portion and an outflow portion, and the flow path is sealed on the inflow portion side of the main body. The first flow path and a second flow path that seals the outflow portion side of the main body, and the other at a position adjacent to one of the first and second flow paths. The flow path is provided.

  According to a second aspect of the present invention, in the filtration member according to the first aspect, the cross-sectional shapes of the one flow path and the other flow path are substantially the same, and the other flow path is defined as the flow path. The other flow path is arranged so that the center of gravity of the other flow channel is positioned at the apex of a substantially regular polygon in a cross-sectional view orthogonal to the extending direction of.

  According to a third aspect of the present invention, in the filtration member according to the first or second aspect, the cross-sectional shapes of the one flow path and the other flow path are substantially regular polygons.

  According to a fourth aspect of the present invention, in the filtering member according to any one of the first to third aspects, the main body has a flow passage formed with a plurality of flow passages opened on the inflow portion side and the outflow portion side. A first seal that has an opening that communicates with a flow passage that forms the second flow path of the flow passage and is fixed to the inflow portion of the flow passage formation portion to form the first flow path; A second member that has a stop member and an opening that communicates with the flow passage serving as the first flow passage of the flow passages and is fixed to the outflow portion side of the flow passage formation portion to form the second flow passage. And a stop member.

  In invention of Claim 5, it is a water purification cartridge which has the filtration member of any one of Claims 1-4, It is characterized by the above-mentioned.

  According to the first aspect of the present invention, the first and second flow paths are provided in the porous body, and the other flow path is arranged at a position adjacent to one of the first and second flow paths. Since the ratio of the portion of the porous main body that can send water from the first flow path to the second flow path can be increased, the discharge amount decreases due to clogging. It can be suppressed, and the life of the filter member can be extended.

  According to the second aspect of the present invention, the cross-sectional shapes of the one flow path and the other flow path are substantially the same, and the other flow path is viewed in cross-section perpendicular to the extending direction of the flow path. By arranging so that the center of gravity of the road is positioned at the apex of the substantially regular polygon, the thickness of the wall portion between one flow path and the other flow path is prevented from increasing. Therefore, pressure loss in the wall can be reduced, and water can be discharged more efficiently.

  According to invention of Claim 3, since the cross-sectional shape of one flow path and the other flow path was made into the substantially regular polygon, the filter member which can aim at lifetime improvement with a simpler structure can be obtained.

  According to the invention of claim 4, the main body communicates with a flow passage forming portion in which a plurality of flow passages opened on the inflow portion side and the outflow portion side are formed, and the flow passage serving as the second flow passage among the flow passages. A first sealing member that is fixed to the inflow portion side of the flow passage forming portion and forms the first flow path, and an opening that communicates with the flow path that becomes the first flow path among the flow paths, By providing the second sealing member that is fixed to the outflow portion side of the flow passage forming portion and forms the second flow path, it is possible to easily manufacture a filtration member that can extend the life. Therefore, the configuration can be simplified and the cost can be reduced.

  According to invention of Claim 5, the water purification cartridge equipped with the filtration member which has the said effect can be obtained.

FIG. 1 is a cross-sectional view of a water purification cartridge according to the first embodiment of the present invention. 2A and 2B are views showing the porous filter according to the first embodiment of the present invention, in which FIG. 2A is a view of the porous filter as seen from the outlet side, and FIG. 2B is a view of FIG. AA sectional drawing of (c) is the figure which looked at the porous filter from the inflow port side. FIG. 3 is a view showing the arrangement of the channels of the porous filter according to the first embodiment of the present invention. FIG. 4 is a view showing the arrangement of the flow paths of the porous filter according to the first modification of the first embodiment of the present invention. FIG. 5 is a diagram showing the cross-sectional shape of the flow path of the porous filter according to the second to fourth modifications of the first embodiment of the present invention. FIG. 6 is a cross-sectional view of a porous filter according to a second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

  (First Embodiment) FIGS. 1 to 5 show a first embodiment of the present invention. FIG. 1 is a sectional view of a water purification cartridge, and FIG. 2 is a view showing a porous filter. ) Is a view of the porous filter as viewed from the outlet side, (b) is a cross-sectional view taken along line AA in FIG. 2 (a), and (c) is a view of the porous filter as viewed from the inlet side, FIG. 3 is a diagram showing the arrangement of the channels of the porous filter, FIG. 4 is a diagram showing the arrangement of the channels of the porous filter according to the first modification of the present embodiment, and FIG. It is a figure which shows the cross-sectional shape of the flow path of the porous filter concerning 2nd-4th modification.

  As shown in FIG. 1, the water purification cartridge 1 according to the present embodiment includes an inlet 2 for raw water at one end (lower end in FIG. 1) and a purified water outlet 3 at the other end (upper end in FIG. 1). , A purification material storage portion 5 provided between the inlet 2 and the outlet 3 in the cartridge case 4, and a purification material 9 stored in the purification material storage portion 5. A filter member storage portion 6 provided on the downstream side of the purification material storage portion 5 in the cartridge case 4, and a filter member 10 stored in the filter member storage portion 6. The raw water flowing into the cartridge case 4 from 2 is filtered through the purification material 9 in the purification material storage 5 and the filtration member 10 in the filtration member storage 6, and the filtered purified water flows out from the outlet 3. It has become so.

  The cartridge case 4 includes a lower case 41 in which the above-described purification material storage unit 5 is provided, and an upper case 42 in which the filter member storage unit 6 is provided, and the lower case 41 and the upper case 42 are coupled to each other. Is formed.

  The lower case 41 is formed in a bottomed cylindrical shape whose lower end is closed by a bottom wall (bottom wall of the cartridge case) 41a, and the above-described inlet 2 is formed in the center of the bottom wall 41a. The upper case 42 is formed in a cylindrical shape whose upper end is closed by the top wall 42a, and the above-described outflow port 3 is formed at the center of the top wall 42a. And the enlarged diameter part 41c is formed in the upper end part of the side wall 41b of the lower case 41, and the step part 41d is formed in the lower end inner peripheral side of this enlarged diameter part 41c. Furthermore, a rib 41e is provided on the outer periphery of the enlarged diameter portion 41c. Further, the lower end of the side wall 41b of the upper case 42 is formed with an enlarged diameter portion 42c whose inner diameter is substantially the same as the outer diameter of the enlarged diameter portion 41c of the lower case 41. Then, the enlarged diameter portion 42c of the upper case 42 is fitted into the enlarged diameter portion 41c of the lower case 41, and the inside of the enlarged diameter portion 42c is in a state where the tip of the enlarged diameter portion 42c of the upper case 42 is abutted against the rib 41e. The lower case 41 and the upper case 42 are fixed with a liquid-tight structure by joining the outer periphery of the enlarged diameter portion 41c to the periphery by ultrasonic welding or the like.

  In addition, an intermediate plate 7 that partitions the purification material storage portion 5 and the filter member storage portion 6 is provided on the step portion 41 d formed on the inner peripheral side of the lower end of the enlarged diameter portion 41 c of the lower case 41. In this embodiment, the intermediate plate 7 has an outer diameter that is substantially the same as the inner diameter of the enlarged portion 41c of the lower case 41, and is fitted into the enlarged portion 41c of the lower case 41 and joined by ultrasonic welding or the like. is doing. The intermediate plate 7 may be sandwiched between the upper end portion of the lower case 41 and the lower end portion of the upper case 42. Furthermore, a non-woven fabric may be disposed between the intermediate plate 7 and the filter member 10 so that water discharged through the purification material 9 is rectified by this non-woven fabric.

  In addition, a substantially annular opening is formed in the central portion of the intermediate plate 7, and a porous film that prevents passage of the purifying material 9 but allows passage of water is provided in the opening. An annular groove 11b is formed in the outer peripheral portion of the side wall 11a of the main body 11 of the filtration member 10, and the liquid tightness between the filtration member 10 and the upper case 42 is secured by the seal ring 8 fitted in the annular groove 11b. Is secured.

  In this embodiment, activated carbon or ceramic is used as the purification material 9. And the lower end of the purification material storage part 5 is obstruct | occluded by the mesh 51, and it suppresses that the purification material 9 spills from the inflow port 2.

  The filter member 10 includes a porous main body 11 formed in a substantially cylindrical shape by firing, for example, ceramics. The main body 11 is provided with a plurality of flow paths 14, an inflow portion 12 is formed on one end side in the axis C direction of the main body 11, and an outflow portion 13 is formed on the other end side.

  The plurality of channels 14 are sealed on the outflow side channel (first channel) 15 in which the inflow portion 12 side of the main body 11 is sealed and the outflow portion 13 side of the main body 11 is opened, and on the outflow portion 13 side of the main body 11. And an inflow side flow path (second flow path) 16 that is stopped and opens on the inflow portion 12 side of the main body 11.

  In this embodiment, after forming the main body 11 provided with a plurality of flow passages open at both ends by firing, out of the flow passages, the inflow portion 12 side end portion of the flow passage forming the outflow side flow passage 15 and the flow passage. The sealing part 17 is formed by hardening the end part by the side of the outflow part 13 of the flow path which forms the inflow side flow path 16 with urethane resin. In addition, before baking the main body 11 provided with a plurality of flow passages having both ends opened, the inflow side flow channel 16 of the flow passages and the inflow side flow channel 16 of the flow passages forming the outflow side flow channel 15 of the flow passages. The end of the flow passage that forms the flow path 13 may be sealed by firing in a state in which a packing material mainly made of alumina, silica, or the like is packed, or may be sealed, or the substantially cylindrical main body 11 may be sealed. Is drilled from one end side in the axial C direction (inflow part 12 side) to the middle of the other end side to form the inflow side flow path 16 and halfway from the other end side in the axial C direction (outflow part 13 side) to the one end side. The sealing portion 17 on the inflow portion 12 side and the outflow portion 13 side may be formed in the main body 11 by forming the outflow side flow path 15 and firing.

  In the present embodiment, the cross-sectional shape orthogonal to the direction C of the outflow side flow channel 15 and the inflow side flow channel 16 (the extending direction of the flow channel 14) is a circle having substantially the same diameter.

  Furthermore, the outflow side flow path 15 which is the other flow path is disposed at a position adjacent to the inflow side flow path 16 which is one of the outflow side flow path 15 and the inflow side flow path 16. .

  Specifically, six outflow side channels 15 are arranged around one inflow side channel 16 so as to surround the inflow side channel 16, and a plurality of inflow side channels 16 are discretely arranged. ing. In the present embodiment, the shortest distance D1 among the distances from any one inflow channel 16 of the inflow channels 16 to the other inflow channels 16 is the one inflow channel 16. To the plurality of outflow side flow paths 15 surrounding the one inflow side flow path 16 (the wall between each of the outflow side flow paths 15 and the inflow side flow path 16 in this embodiment) The plurality of inflow channels 16 are discretely arranged so as to be longer than the thickness D2 of the portion 18.

  In the present embodiment, the outflow side flow channel 15 and the inflow side flow channel 16 are provided so that the distance from one inflow side flow channel 16 to each outflow side flow channel 15 is substantially the same.

  Specifically, the center (center of gravity) 15a of the outflow side flow path 15 is substantially a regular hexagon (substantially regular many) when the outflow side flow path 15 is viewed in a cross section orthogonal to the axis C direction (the extending direction of the flow path 14). The center 16a of the inflow side flow path 16 is arranged at the center of gravity of a regular hexagon formed by connecting the center (center of gravity) 15a of the outflow side flow path 15. I have to.

  In the present embodiment, the center (center of gravity) 15a of the outflow side flow passage 15 is disposed at the apex of a substantially regular hexagon (substantially regular polygon). However, as shown in FIG. Eight outflow channels 15 may be provided around the side channels 16 so that the outflow channels 15 are located at the apexes of the square.

  Moreover, in this embodiment, although the cross-sectional shape of the outflow side flow path 15 and the inflow side flow path 16 is made into the circle | round | yen with substantially the same diameter, as shown to Fig.5 (a)-(c), The cross-sectional shape of the inflow side flow path is a substantially equilateral triangular outflow side flow path 15A and inflow side flow path 16A, and the center of gravity of the outflow side flow path 15A is positioned at the apex of a substantially regular triangle (substantially regular polygon). Or a substantially square outflow channel 15B and inflow channel 16B, and the center of gravity of the outflow channel 15B is positioned at the apex of a substantially square (substantially regular polygon). Alternatively, a substantially regular hexagonal outflow side channel 15C and an inflow side channel 16C may be provided so that the center of gravity of the outflow side channel 15C is positioned at the apex of a substantially regular hexagon (substantially regular polygon). Is possible. At this time, the side of the outflow side channel and the side of the inflow side channel are opposed to each other, and the wall portions between the outflow side channel and the inflow side channel are arranged to have substantially the same thickness. It is preferable to install.

  When water is caused to flow into the inflow side flow channel 16 from the inflow portion 12 side of the main body 11 of the filter member 10 configured as described above, the water in the inflow side flow channel 16 is transferred to the inflow side as shown in FIG. By passing through the wall portion 18 between the flow path 16 and the outflow side flow path 15, it is filtered and sent into the outflow side flow path 15. And the water in the outflow side flow path 15 flows out from the outflow part 13 of the main body 11, and flows out from the outflow port 3. FIG.

  According to the present embodiment, the outflow side flow path (first flow path) 15 and the inflow side flow path (second flow path) 16 are provided in the porous main body 11, and the outflow side flow path 15 and the inflow side flow are provided. By disposing the outflow side flow path 15 at a position adjacent to any one of the inflow side flow paths 16 in the path 16, water is supplied from the first flow path to the second flow path in the porous main body 11. Since the ratio of the wall portion 18 that can be sent can be increased, it is possible to suppress the discharge amount from being reduced due to clogging, and the life of the filter member 10 can be extended.

  In addition, the inflow side flow path (one flow path) 16 and the outflow side flow path (the other flow path) 15 have substantially the same circular cross section, and the outflow side flow path (the other flow path) 15 The center (center of gravity) 15a of the outflow side flow passage 15 is positioned at the apex of a substantially regular hexagon or a substantially square (substantially regular polygon) in a cross-sectional view orthogonal to the axis C direction (extending direction of the flow passage 14). By disposing, the wall between the inflow side flow path (one flow path) 16 and each outflow side flow path (the other flow path) 15 surrounding the inflow side flow path (one flow path) 16 Since it can suppress that the thickness of the part 18 becomes thick, the pressure loss in a wall part can be reduced and water can be discharged more efficiently. Moreover, since the outflow side flow path 15 and the inflow side flow path 16 can be arranged with regularity by being positioned at the apex of the substantially regular polygon, the thickness of the wall portion 18 becomes extremely thin. It is also possible to suppress the formation of a portion that would cause the strength of the main body 11 to be reduced. Moreover, since the structure of the flow path 14 can be simplified, there is also an advantage that the main body 11 can be easily manufactured.

  Note that, as in the second to fourth modifications of the present embodiment, even if the outflow side flow path and the inflow side flow path have a substantially polygonal shape and are arranged with regularity, substantially the same operation as described above. There is an effect. In addition, the thickness of the wall between each of the outflow channels and the inflow channel can be easily adjusted, and the pressure loss at the walls is reduced while preventing the strength of the main body from being reduced. To be able to.

  In addition, since the difference in pressure loss in the circumferential direction of the inflow side flow path can be reduced by making the thickness of the wall portion more uniform, the movement of water from the inflow side flow path to the outflow side flow path can be reduced. It is possible to suppress the bias to a predetermined location, and it is possible to further extend the life of the filtration member. That is, as shown in FIG. 5, if the cross-sectional shape of the flow path is a substantially regular polygon, it is possible to obtain the filter member 10 that can achieve a longer life with a simpler configuration.

  Moreover, according to this embodiment, the water purification cartridge 1 equipped with the filtration member 10 which has the said effect can be obtained.

  (Second Embodiment) FIG. 6 shows a second embodiment of the present invention, and FIG. 6 is a sectional view of the porous filter.

  As shown in FIG. 6, the filter member 20 according to the present embodiment has basically the same configuration as the filter member 10 of the first embodiment, and is a porous body formed in a substantially cylindrical shape. 21. An inflow portion 23 is formed on one end side in the axis C direction of the main body 21, and an outflow portion 24 is formed on the other end side.

  The main body 21 is sealed with an outflow side passage (first flow path) 28 in which the inflow portion 23 side of the main body 21 is sealed and the outflow portion 24 side of the main body 21 is opened, and the outflow portion 24 side of the main body 21 is sealed. An inflow side flow path (second flow path) 29 that is stopped and opens on the inflow portion 23 side of the main body 21 is formed.

  The outflow side flow path (first flow path) 28 and the inflow side flow path (second flow path) 29 have a circular cross-sectional shape, and as in the first embodiment, the outflow side flow path 28 and An outflow side flow path 28 that is the other flow path is disposed at a position adjacent to the inflow side flow path 29 that is one of the inflow side flow paths 29, and the outflow side flow path (the other flow path 29). The channel 28 is arranged so that the center (center of gravity) of the outflow side channel 28 is positioned at the apex of a substantially regular hexagon (substantially regular polygon) in a cross-sectional view.

  In addition, the cross-sectional shape and arrangement method of the outflow side flow path (first flow path) 28 and the inflow side flow path (second flow path) 29 according to the present embodiment are the same as in the modification of the first embodiment. It is also possible to do.

  Here, the main difference between the present embodiment and the first embodiment is that the main body 21 is provided with a flow passage forming portion 22 in which a plurality of flow passages 25 having openings on the inflow portion 23 side and the outflow portion 24 side are formed. A first sealing plate having an opening 26 a communicating with the flow passage 25 serving as the second flow passage 29 in the passage 25 and being fixed to the inflow portion 23 side of the flow passage formation portion 22 to form the first flow passage 28. (First sealing member) 26 and an opening 27a that communicates with the flow passage 25 serving as the first flow path 28 of the flow passage 25, and is fixed to the outflow portion 24 side of the flow passage formation portion 22 to be second And a second sealing plate (second sealing member) 27 that forms the flow path 29.

  In the present embodiment, the flow passage forming portion 22 has a substantially cylindrical shape, and the flow passage forming portion 22 is provided with a plurality of flow passages 25 communicating with both end portions in the axis C direction along the axis C direction. ing. An annular groove 22b for fitting the seal ring is formed on the outer peripheral portion of the side wall 22a of the flow passage forming portion 22.

  Then, a substantially disc-shaped first seal is formed so that the opening 26a communicates with the opening of the flow passage 25 serving as the first flow path 28 on one end side (outflow portion 24 side) in the axial C direction of the flow passage forming portion 22. The plate (first sealing member) 26 is attached (fixed), and the flow passage 25 in which the opening 27 a becomes the second flow passage 29 on the other end side in the axis C direction (the inflow portion 23 side) of the flow passage forming portion 22. By sticking (fixing) a substantially disc-shaped second sealing plate (second sealing member) 27 so as to communicate with the opening, the outflow portion 24 side is sealed and the inflow portion 23 side opens. A main body 21 is formed which is provided with an inflow side channel 29 and an outflow side channel 28 which is sealed on the inflow portion 23 side and opened on the outflow portion 24 side.

  In addition, while providing the protrusion fitted to the said opening in the site | part corresponding to the opening of the flow path 25 used as the 2nd flow path 29 of the 1st sealing board 26, and the 1st flow path 28 of the 2nd sealing board 27, Protrusions that fit into the openings corresponding to the openings of the flow passage 25 are provided, and the protrusions of the first sealing plate 26 and the second sealing plate 27 are fitted into the openings of the flow passage 25 so that the first The sealing plate 26 and the second sealing plate 27 may be fixed to the flow path forming unit 22.

  Also according to this embodiment described above, the same operational effects as those of the first embodiment can be obtained.

  In addition, according to the present embodiment, the main body 21 includes the flow passage forming portion 22 in which a plurality of flow passages 25 opened on the inflow portion 23 side and the outflow portion 24 side, and the second flow passage 29 in the flow passage 25. A first sealing plate (first sealing member) 26 having an opening 26a communicating with the flow passage 25 and being fixed to the inflow portion 23 side of the flow passage forming portion 22 to form the first flow path 28; A second seal that has an opening 27a that communicates with the flow passage 25 serving as the first flow path 28 in the flow path 25 and is fixed to the outflow portion 24 side of the flow passage formation portion 22 to form the second flow passage 29. By providing the plate (second sealing member) 27, it becomes possible to easily manufacture the filtration member 20 that can extend the life, thereby simplifying the configuration and reducing the cost. Can be planned.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made.

  For example, the water purification cartridge may have a shape other than the cylindrical shape. In addition, the filtering member storage section, the purification material storage section, and other detailed specifications (shape, size, layout, etc.) can be changed as appropriate.

  Moreover, in the said embodiment, although what provided the purification | cleaning material in addition to the filtration member was illustrated, it does not need to provide a purification | cleaning material. Moreover, the purification | cleaning material should just use the material which can filter or purify water other than activated carbon or a ceramic.

  Furthermore, in the above embodiment, the inflow side flow path is one flow path, but the outflow side flow path may be one flow path.

DESCRIPTION OF SYMBOLS 1 Water purification cartridge 2 Inlet 3 Outlet 6 Filtration member accommodating part 10 Filtration member 11 Main body 12 Inflow part 13 Outflow part 14 Flow path 15,15A, 15B, 15C Outflow side water path (1st flow path)
15a Center (center of gravity)
16, 16A, 16B, 16C Inflow side water channel (second flow channel)
16a Center (center of gravity)
DESCRIPTION OF SYMBOLS 17 Sealing part 18 Wall part 20 Filtration member 21 Main body 22 Flow path formation part 23 Inflow part 24 Outflow part 25 Flow path 26 First sealing plate 26a Opening 27 Second sealing plate 27a Opening 28 Outflow side water channel (first flow) Road)
29 Inflow side water channel (second channel)
C axis

Claims (5)

A filtering member in which a flow path is provided in a porous main body to form an inflow portion and an outflow portion,
The flow path is composed of a first flow path in which the inflow portion side of the main body is sealed, and a second flow path in which the outflow portion side of the main body is sealed,
A filtering member, wherein the other channel is disposed at a position adjacent to one of the first and second channels. While making the cross-sectional shape of the one channel and the other channel substantially the same,
The other channel is arranged so that the center of gravity of the other channel is positioned at the apex of a substantially regular polygon in a cross-sectional view orthogonal to the extending direction of the one channel. Item 2. The filtration member according to Item 1.   The filtering member according to claim 1 or 2, wherein the cross-sectional shape of the one channel and the other channel is a substantially regular polygon.   The main body has a flow passage forming portion in which a plurality of flow passages opened on the inflow portion side and the outflow portion side are formed, and an opening communicating with the flow passage serving as the second flow path in the flow passage, A first sealing member that is fixed to the inflow portion side of the passage forming portion and forms the first flow path; and an opening that communicates with the flow path that becomes the first flow path among the flow paths, and the flow The filtration member according to any one of claims 1 to 3, further comprising: a second sealing member that is fixed to an outflow portion side of the path formation portion and forms the second flow path.   A water purification cartridge comprising the filtering member according to claim 1.

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